This patch adds support for VXLAN encap and decap operations, in
Direct Verbs flow.
Signed-off-by: Dekel Peled <dek...@mellanox.com>
---
drivers/net/mlx5/mlx5_flow.h | 4 +
drivers/net/mlx5/mlx5_flow_dv.c | 409 +++++++++++++++++++++++++++++++++++++++-
2 files changed, 408 insertions(+), 5 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 38635c9..9c28e50 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -92,6 +92,8 @@
#define MLX5_FLOW_ACTION_DEC_TTL (1u << 19)
#define MLX5_FLOW_ACTION_SET_MAC_SRC (1u << 20)
#define MLX5_FLOW_ACTION_SET_MAC_DST (1u << 21)
+#define MLX5_FLOW_ACTION_VXLAN_ENCAP (1u << 22)
+#define MLX5_FLOW_ACTION_VXLAN_DECAP (1u << 23)
#define MLX5_FLOW_FATE_ACTIONS \
(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE | MLX5_FLOW_ACTION_RSS)
@@ -181,6 +183,8 @@ struct mlx5_flow_dv {
#ifdef HAVE_IBV_FLOW_DV_SUPPORT
struct mlx5dv_flow_action_attr actions[MLX5_DV_MAX_NUMBER_OF_ACTIONS];
/**< Action list. */
+ struct ibv_flow_action *encap_verb; /**< Verbs object of encap. */
+ struct ibv_flow_action *decap_verb; /**< Verbs object of decap. */
#endif
int actions_n; /**< number of actions. */
};
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index e8f409f..06ecabf 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -35,6 +35,16 @@
#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+#define MLX5_UDP 17
+#define MLX5_TCP 6
+#define MLX5_GRE 47
+
+/*
+ * Encap buf length, max:
+ * Eth:14/VLAN:8/IPv6:40/TCP:36/TUNNEL:20/Eth:14
+ */
+#define MLX5_ENCAP_LEN 132
+
/**
* Validate META item.
*
@@ -97,6 +107,331 @@
}
/**
+ * Validate the vxlan encap action.
+ *
+ * @param[in] action_flags
+ * Holds the actions detected until now.
+ * @param[in] action
+ * Pointer to the encap action.
+ * @param[in] attr
+ * Pointer to flow attributes
+ * @param[out] error
+ * Pointer to error structure.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_validate_action_vxlan_encap(uint64_t action_flags,
+ const struct rte_flow_action *action,
+ const struct rte_flow_attr *attr,
+ struct rte_flow_error *error)
+{
+ const struct rte_flow_action_vxlan_encap *vxlan_encap = action->conf;
+
+ if (!vxlan_encap)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, action,
+ "configuration cannot be null");
+ if (action_flags & MLX5_FLOW_ACTION_DROP)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't drop and encap in same flow");
+ if (action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't have 2 encap actions in same"
+ " flow");
+ if (attr->ingress)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
+ NULL,
+ "encap action not supported for "
+ "ingress");
+ return 0;
+}
+
+/**
+ * Validate the vxlan decap action.
+ *
+ * @param[in] action_flags
+ * Holds the actions detected until now.
+ * @param[in] action
+ * Pointer to the decap action.
+ * @param[in] attr
+ * Pointer to flow attributes
+ * @param[out] error
+ * Pointer to error structure.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_validate_action_vxlan_decap(uint64_t action_flags,
+ const struct rte_flow_action *action __rte_unused,
+ const struct rte_flow_attr *attr,
+ struct rte_flow_error *error)
+{
+ if (action_flags & MLX5_FLOW_ACTION_DROP)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't drop and decap in same flow");
+ if (action_flags & MLX5_FLOW_ACTION_VXLAN_ENCAP)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+ "can't encap and decap in same flow");
+ if (attr->egress)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
+ NULL,
+ "decap action not supported for "
+ "egress");
+ return 0;
+}
+
+static size_t item_len[] = {
+ [RTE_FLOW_ITEM_TYPE_VOID] = 0,
+ [RTE_FLOW_ITEM_TYPE_ETH] = sizeof(struct rte_flow_item_eth),
+ [RTE_FLOW_ITEM_TYPE_VLAN] = sizeof(struct rte_flow_item_vlan),
+ [RTE_FLOW_ITEM_TYPE_IPV4] = sizeof(struct rte_flow_item_ipv4),
+ [RTE_FLOW_ITEM_TYPE_IPV6] = sizeof(struct rte_flow_item_ipv6),
+ [RTE_FLOW_ITEM_TYPE_UDP] = sizeof(struct rte_flow_item_udp),
+ [RTE_FLOW_ITEM_TYPE_TCP] = sizeof(struct rte_flow_item_tcp),
+ [RTE_FLOW_ITEM_TYPE_VXLAN] = sizeof(struct rte_flow_item_vxlan),
+ [RTE_FLOW_ITEM_TYPE_GRE] = sizeof(struct rte_flow_item_gre),
+ [RTE_FLOW_ITEM_TYPE_NVGRE] = sizeof(struct rte_flow_item_gre),
+ [RTE_FLOW_ITEM_TYPE_VXLAN_GPE] = sizeof(struct rte_flow_item_vxlan_gpe),
+ [RTE_FLOW_ITEM_TYPE_MPLS] = sizeof(struct rte_flow_item_mpls),
+};
+
+/**
+ * Convert the encap action data from rte_flow_item to raw buffer
+ *
+ * @param[in] item
+ * Pointer to rte_flow_item object.
+ * @param[out] buf
+ * Pointer to the output buffer.
+ * @param[out] size
+ * Pointer to the output buffer size.
+ * @param[out] error
+ * Pointer to the error structure.
+ * @param[in] l3_type
+ * ???.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+static int
+flow_dv_convert_encap(struct rte_flow_item *item, uint8_t *buf, size_t *size,
+ struct rte_flow_error *error, uint16_t l3_type)
+{
+ struct ether_hdr *eth = NULL;
+ struct vlan_hdr *vlan = NULL;
+ struct ipv4_hdr *ipv4 = NULL;
+ struct ipv6_hdr *ipv6 = NULL;
+ struct udp_hdr *udp = NULL;
+ struct vxlan_hdr *vxlan = NULL;
+ const struct rte_flow_item_vlan *vlan_spec;
+ size_t len;
+
+ assert(item);
+ *size = 0;
+ for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
+ /* TODO: variable length handling: raw, vxlan and nvgre. */
+ len = item_len[item->type];
+ if (len + *size > MLX5_ENCAP_LEN)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "invalid item length");
+ rte_memcpy((void *)&buf[*size], item->spec, len);
+ switch (item->type) {
+ case RTE_FLOW_ITEM_TYPE_ETH:
+ eth = (void *)&buf[*size];
+ break;
+ case RTE_FLOW_ITEM_TYPE_VLAN:
+ vlan_spec = item->spec;
+ vlan = (void *)&buf[*size];
+ if (!eth)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "eth header not found");
+ vlan->vlan_tci = vlan_spec->tci;
+ vlan->eth_proto = vlan_spec->inner_type;
+ if (!eth->ether_type)
+ eth->ether_type = htons(ETHER_TYPE_VLAN);
+ break;
+ case RTE_FLOW_ITEM_TYPE_IPV4:
+ ipv4 = (void *)&buf[*size];
+ if (!vlan && !eth)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "neither eth nor vlan header
found");
+ if (vlan && !vlan->eth_proto)
+ vlan->eth_proto = htons(ETHER_TYPE_IPv4);
+ else if (eth && !eth->ether_type)
+ eth->ether_type = htons(ETHER_TYPE_IPv4);
+ if (!ipv4->version_ihl)
+ ipv4->version_ihl = 0x45;
+ if (!ipv4->time_to_live)
+ ipv4->time_to_live = 0x40;
+ break;
+ case RTE_FLOW_ITEM_TYPE_IPV6:
+ ipv6 = (void *)&buf[*size];
+ if (!vlan && !eth)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "neither eth nor vlan header
found");
+ if (vlan && !vlan->eth_proto)
+ vlan->eth_proto = htons(ETHER_TYPE_IPv6);
+ else if (eth && !eth->ether_type)
+ eth->ether_type = htons(ETHER_TYPE_IPv6);
+ if (!ipv6->vtc_flow)
+ ipv6->vtc_flow = htonl(0x60000000);
+ if (!ipv6->hop_limits)
+ ipv6->hop_limits = 0xff;
+ break;
+ case RTE_FLOW_ITEM_TYPE_UDP:
+ udp = (void *)&buf[*size];
+ if (!ipv4 && !ipv6)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "ip header not found");
+ if (ipv4 && !ipv4->next_proto_id)
+ ipv4->next_proto_id = MLX5_UDP;
+ else if (ipv6 && !ipv6->proto)
+ ipv6->proto = MLX5_UDP;
+ break;
+ case RTE_FLOW_ITEM_TYPE_VXLAN:
+ vxlan = (void *)&buf[*size];
+ if (!udp)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "udp header not found");
+ if (!udp->dst_port)
+ udp->dst_port = htons(MLX5_UDP_PORT_VXLAN);
+ if (!vxlan->vx_flags)
+ vxlan->vx_flags = htonl(0x08000000);
+ break;
+ case RTE_FLOW_ITEM_TYPE_VXLAN_GPE:
+ vxlan = (void *)&buf[*size];
+ if (!udp)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "udp header not found");
+ if (!udp->dst_port)
+ udp->dst_port = htons(MLX5_UDP_PORT_VXLAN_GPE);
+ if (!vxlan->vx_flags)
+ vxlan->vx_flags = htonl(0x0c000003);
+ break;
+ case RTE_FLOW_ITEM_TYPE_GRE:
+ case RTE_FLOW_ITEM_TYPE_NVGRE:
+ if (!ipv4 && !ipv6)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "ip header not found");
+ if (ipv4 && !ipv4->next_proto_id)
+ ipv4->next_proto_id = htons(MLX5_GRE);
+ else if (ipv6 && !ipv6->proto)
+ ipv6->proto = htons(MLX5_GRE);
+ break;
+ case RTE_FLOW_ITEM_TYPE_VOID:
+ break;
+ default:
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ (void *)item->type,
+ "unsupported item type");
+ break;
+ }
+ *size += len;
+ }
+ if (l3_type && vlan)
+ vlan->eth_proto = htons(l3_type);
+ else if (l3_type && eth)
+ eth->ether_type = htons(l3_type);
+ return 0;
+}
+
+/**
+ * Convert VXLAN encap action to DV specification.
+ *
+ * @param[in] dev
+ * Pointer to rte_eth_dev structure.
+ * @param[in] action
+ * Pointer to action structure.
+ * @param[out] error
+ * Pointer to the error structure.
+ *
+ * @return
+ * Pointer to action on success, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_flow_action *
+flow_dv_create_vxlan_encap(struct rte_eth_dev *dev,
+ const struct rte_flow_action *action,
+ struct rte_flow_error *error)
+{
+ struct ibv_flow_action *encap_verb = NULL;
+ const struct rte_flow_action_vxlan_encap *encap_data;
+ struct priv *priv = dev->data->dev_private;
+ uint8_t buf[MLX5_ENCAP_LEN];
+ size_t size = 0;
+ int convert_result;
+
+ encap_data = (const struct rte_flow_action_vxlan_encap *)action->conf;
+ convert_result = flow_dv_convert_encap(encap_data->definition,
+ buf, &size, error, 0);
+ if (convert_result)
+ return NULL;
+ encap_verb = mlx5_glue->dv_create_flow_action_packet_reformat
+ (priv->ctx, size, (size ? buf : NULL),
+ MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TO_L2_TUNNEL,
+ MLX5DV_FLOW_TABLE_TYPE_NIC_TX);
+ if (!encap_verb)
+ rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL, "cannot create vxlan encap action");
+ return encap_verb;
+}
+
+/**
+ * Convert VXLAN decap action to DV specification.
+ *
+ * @param[in] dev
+ * Pointer to rte_eth_dev structure.
+ * @param[in] action
+ * Pointer to action structure.
+ * @param[out] error
+ * Pointer to the error structure.
+ *
+ * @return
+ * Pointer to action on success, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_flow_action *
+flow_dv_create_vxlan_decap(struct rte_eth_dev *dev,
+ const struct rte_flow_action *action __rte_unused,
+ struct rte_flow_error *error)
+{
+ struct ibv_flow_action *decap_verb = NULL;
+ struct priv *priv = dev->data->dev_private;
+
+ decap_verb = mlx5_glue->dv_create_flow_action_packet_reformat
+ (priv->ctx, 0, NULL,
+ MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2,
+ MLX5DV_FLOW_TABLE_TYPE_NIC_RX);
+ if (!decap_verb)
+ rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL, "cannot create decap action");
+ return decap_verb;
+}
+
+/**
* Verify the @p attributes will be correctly understood by the NIC and store
* them in the @p flow if everything is correct.
*
@@ -347,6 +682,24 @@
action_flags |= MLX5_FLOW_ACTION_COUNT;
++actions_n;
break;
+ case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
+ ret = flow_dv_validate_action_vxlan_encap(action_flags,
+ actions, attr,
+ error);
+ if (ret < 0)
+ return ret;
+ action_flags |= MLX5_FLOW_ACTION_VXLAN_ENCAP;
+ ++actions_n;
+ break;
+ case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
+ ret = flow_dv_validate_action_vxlan_decap(action_flags,
+ actions, attr,
+ error);
+ if (ret < 0)
+ return ret;
+ action_flags |= MLX5_FLOW_ACTION_VXLAN_DECAP;
+ ++actions_n;
+ break;
default:
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION,
@@ -1056,14 +1409,23 @@
/**
* Store the requested actions in an array.
*
+ * @param[in] dev
+ * Pointer to rte_eth_dev structure.
* @param[in] action
* Flow action to translate.
* @param[in, out] dev_flow
* Pointer to the mlx5_flow.
+ * @param[out] error
+ * Pointer to the error structure.
+ *
+ * @return
+ * 0 on success, a negative errno value otherwise and rte_errno is set.
*/
-static void
-flow_dv_create_action(const struct rte_flow_action *action,
- struct mlx5_flow *dev_flow)
+static int
+flow_dv_create_action(struct rte_eth_dev *dev,
+ const struct rte_flow_action *action,
+ struct mlx5_flow *dev_flow,
+ struct rte_flow_error *error)
{
const struct rte_flow_action_queue *queue;
const struct rte_flow_action_rss *rss;
@@ -1110,10 +1472,35 @@
/* Added to array only in apply since we need the QP */
flow->actions |= MLX5_FLOW_ACTION_RSS;
break;
+ case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
+ dev_flow->dv.actions[actions_n].type =
+ MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION;
+ dev_flow->dv.actions[actions_n].action =
+ flow_dv_create_vxlan_encap(dev, action, error);
+ if (!(dev_flow->dv.actions[actions_n].action))
+ return -rte_errno;
+ dev_flow->dv.encap_verb =
+ dev_flow->dv.actions[actions_n].action;
+ flow->actions |= MLX5_FLOW_ACTION_VXLAN_ENCAP;
+ actions_n++;
+ break;
+ case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
+ dev_flow->dv.actions[actions_n].type =
+ MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION;
+ dev_flow->dv.actions[actions_n].action =
+ flow_dv_create_vxlan_decap(dev, action, error);
+ if (!(dev_flow->dv.actions[actions_n].action))
+ return -rte_errno;
+ dev_flow->dv.decap_verb =
+ dev_flow->dv.actions[actions_n].action;
+ flow->actions |= MLX5_FLOW_ACTION_VXLAN_DECAP;
+ actions_n++;
+ break;
default:
break;
}
dev_flow->dv.actions_n = actions_n;
+ return 0;
}
static uint32_t matcher_zero[MLX5_ST_SZ_DW(fte_match_param)] = { 0 };
@@ -1279,8 +1666,10 @@
matcher.egress = attr->egress;
if (flow_dv_matcher_register(dev, &matcher, dev_flow, error))
return -rte_errno;
- for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
- flow_dv_create_action(actions, dev_flow);
+ for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
+ if (flow_dv_create_action(dev, actions, dev_flow, error))
+ return -rte_errno;
+ }
return 0;
}
@@ -1465,6 +1854,16 @@
LIST_REMOVE(dev_flow, next);
if (dev_flow->dv.matcher)
flow_dv_matcher_release(dev, dev_flow);
+ if (dev_flow->dv.encap_verb) {
+ claim_zero(mlx5_glue->destroy_flow_action
+ (dev_flow->dv.encap_verb));
+ dev_flow->dv.encap_verb = NULL;
+ }
+ if (dev_flow->dv.decap_verb) {
+ claim_zero(mlx5_glue->destroy_flow_action
+ (dev_flow->dv.decap_verb));
+ dev_flow->dv.decap_verb = NULL;
+ }
rte_free(dev_flow);
}
}
--
1.8.3.1
