[v5,04/13] net/mlx5: add necessary structures for E-Switch VXLAN
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Commit Message
This patch introduces the data structures needed to implement VXLAN
encapsulation/decapsulation hardware offload support for E-Switch.
Suggested-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>
---
drivers/net/mlx5/mlx5_flow.h | 9 ++++
drivers/net/mlx5/mlx5_flow_tcf.c | 99 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 108 insertions(+)
@@ -219,6 +219,15 @@ struct mlx5_flow_dv {
struct mlx5_flow_tcf {
struct nlmsghdr *nlh;
struct tcmsg *tcm;
+ union { /**< Tunnel encap/decap descriptor. */
+ struct flow_tcf_tunnel_hdr *tunnel;
+ struct flow_tcf_vxlan_decap *vxlan_decap;
+ struct flow_tcf_vxlan_encap *vxlan_encap;
+ };
+ uint32_t applied:1; /**< Whether rule is currently applied. */
+#ifndef NDEBUG
+ uint32_t nlsize; /**< Size of NL message buffer for debug check. */
+#endif
};
/* Verbs specification header. */
@@ -348,6 +348,100 @@ struct mlx5_flow_tcf_context {
uint8_t *buf; /* Message buffer. */
};
+/**
+ * Neigh rule structure. The neigh rule is applied via Netlink to
+ * outer tunnel iface in order to provide destination MAC address
+ * for the VXLAN encapsultion. The neigh rule is implicitly related
+ * to the Flow itself and can be shared by multiple Flows.
+ */
+struct tcf_neigh_rule {
+ LIST_ENTRY(tcf_neigh_rule) next;
+ uint32_t refcnt;
+ struct ether_addr eth;
+ uint16_t mask;
+ union {
+ struct {
+ rte_be32_t dst;
+ } ipv4;
+ struct {
+ uint8_t dst[IPV6_ADDR_LEN];
+ } ipv6;
+ };
+};
+
+/**
+ * Local rule structure. The local rule is applied via Netlink to
+ * outer tunnel iface in order to provide local and peer IP addresses
+ * of the VXLAN tunnel for encapsulation. The local rule is implicitly
+ * related to the Flow itself and can be shared by multiple Flows.
+ */
+struct tcf_local_rule {
+ LIST_ENTRY(tcf_local_rule) next;
+ uint32_t refcnt;
+ uint16_t mask;
+ union {
+ struct {
+ rte_be32_t dst;
+ rte_be32_t src;
+ } ipv4;
+ struct {
+ uint8_t dst[IPV6_ADDR_LEN];
+ uint8_t src[IPV6_ADDR_LEN];
+ } ipv6;
+ };
+};
+
+/** VXLAN virtual netdev. */
+struct tcf_vtep {
+ LIST_ENTRY(tcf_vtep) next;
+ LIST_HEAD(, tcf_neigh_rule) neigh;
+ LIST_HEAD(, tcf_local_rule) local;
+ uint32_t refcnt;
+ unsigned int ifindex; /**< Own interface index. */
+ unsigned int ifouter; /**< Index of device attached to. */
+ uint16_t port;
+ uint8_t created;
+};
+
+/** Tunnel descriptor header, common for all tunnel types. */
+struct flow_tcf_tunnel_hdr {
+ uint32_t type; /**< Tunnel action type. */
+ struct tcf_vtep *vtep; /**< Virtual tunnel endpoint device. */
+ unsigned int ifindex_org; /**< Original dst/src interface */
+ unsigned int *ifindex_ptr; /**< Interface ptr in message. */
+};
+
+struct flow_tcf_vxlan_decap {
+ struct flow_tcf_tunnel_hdr hdr;
+ uint16_t udp_port;
+};
+
+struct flow_tcf_vxlan_encap {
+ struct flow_tcf_tunnel_hdr hdr;
+ uint32_t mask;
+ struct {
+ struct ether_addr dst;
+ struct ether_addr src;
+ } eth;
+ union {
+ struct {
+ rte_be32_t dst;
+ rte_be32_t src;
+ } ipv4;
+ struct {
+ uint8_t dst[IPV6_ADDR_LEN];
+ uint8_t src[IPV6_ADDR_LEN];
+ } ipv6;
+ };
+struct {
+ rte_be16_t src;
+ rte_be16_t dst;
+ } udp;
+ struct {
+ uint8_t vni[3];
+ } vxlan;
+};
+
/** Structure used when extracting the values of a flow counters
* from a netlink message.
*/
@@ -365,6 +459,7 @@ struct flow_tcf_stats_basic {
struct rte_flow_item_ipv6 ipv6;
struct rte_flow_item_tcp tcp;
struct rte_flow_item_udp udp;
+ struct rte_flow_item_vxlan vxlan;
} flow_tcf_mask_empty;
/** Supported masks for known item types. */
@@ -376,6 +471,7 @@ struct flow_tcf_stats_basic {
struct rte_flow_item_ipv6 ipv6;
struct rte_flow_item_tcp tcp;
struct rte_flow_item_udp udp;
+ struct rte_flow_item_vxlan vxlan;
} flow_tcf_mask_supported = {
.port_id = {
.id = 0xffffffff,
@@ -413,6 +509,9 @@ struct flow_tcf_stats_basic {
.src_port = RTE_BE16(0xffff),
.dst_port = RTE_BE16(0xffff),
},
+ .vxlan = {
+ .vni = "\xff\xff\xff",
+ },
};
#define SZ_NLATTR_HDR MNL_ALIGN(sizeof(struct nlattr))