net/mlx5e: Support setup of tos and ttl for tunnel key TC action offload

Use the values provided by user-space for the encapsulation headers.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 86af92a..a6e8477 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -2223,7 +2223,7 @@ static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
                                  char buf[], int encap_size,
                                  unsigned char h_dest[ETH_ALEN],
-                                 u8 ttl,
+                                 u8 tos, u8 ttl,
                                  __be32 daddr,
                                  __be32 saddr,
                                  __be16 udp_dst_port,
@@ -2243,6 +2243,7 @@ static void gen_vxlan_header_ipv4(struct net_device *out_dev,
        ip->daddr = daddr;
        ip->saddr = saddr;
 
+       ip->tos = tos;
        ip->ttl = ttl;
        ip->protocol = IPPROTO_UDP;
        ip->version = 0x4;
@@ -2256,7 +2257,7 @@ static void gen_vxlan_header_ipv4(struct net_device *out_dev,
 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
                                  char buf[], int encap_size,
                                  unsigned char h_dest[ETH_ALEN],
-                                 u8 ttl,
+                                 u8 tos, u8 ttl,
                                  struct in6_addr *daddr,
                                  struct in6_addr *saddr,
                                  __be16 udp_dst_port,
@@ -2273,7 +2274,7 @@ static void gen_vxlan_header_ipv6(struct net_device *out_dev,
        ether_addr_copy(eth->h_source, out_dev->dev_addr);
        eth->h_proto = htons(ETH_P_IPV6);
 
-       ip6_flow_hdr(ip6h, 0, 0);
+       ip6_flow_hdr(ip6h, tos, 0);
        /* the HW fills up ipv6 payload len */
        ip6h->nexthdr     = IPPROTO_UDP;
        ip6h->hop_limit   = ttl;
@@ -2295,8 +2296,8 @@ static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
        struct net_device *out_dev;
        struct neighbour *n = NULL;
        struct flowi4 fl4 = {};
+       u8 nud_state, tos, ttl;
        char *encap_header;
-       u8 nud_state, ttl;
        int err;
 
        if (max_encap_size < ipv4_encap_size) {
@@ -2319,7 +2320,8 @@ static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
                goto free_encap;
        }
 
-       ttl = 0;
+       tos = tun_key->tos;
+       ttl = tun_key->ttl;
 
        fl4.flowi4_tos = tun_key->tos;
        fl4.daddr = tun_key->u.ipv4.dst;
@@ -2355,7 +2357,7 @@ static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
        switch (e->tunnel_type) {
        case MLX5_HEADER_TYPE_VXLAN:
                gen_vxlan_header_ipv4(out_dev, encap_header,
-                                     ipv4_encap_size, e->h_dest, ttl,
+                                     ipv4_encap_size, e->h_dest, tos, ttl,
                                      fl4.daddr,
                                      fl4.saddr, tun_key->tp_dst,
                                      tunnel_id_to_key32(tun_key->tun_id));
@@ -2403,8 +2405,8 @@ static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
        struct net_device *out_dev;
        struct neighbour *n = NULL;
        struct flowi6 fl6 = {};
+       u8 nud_state, tos, ttl;
        char *encap_header;
-       u8 ttl, nud_state;
        int err;
 
        if (max_encap_size < ipv6_encap_size) {
@@ -2427,7 +2429,8 @@ static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
                goto free_encap;
        }
 
-       ttl = 0;
+       tos = tun_key->tos;
+       ttl = tun_key->ttl;
 
        fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
        fl6.daddr = tun_key->u.ipv6.dst;
@@ -2463,7 +2466,7 @@ static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
        switch (e->tunnel_type) {
        case MLX5_HEADER_TYPE_VXLAN:
                gen_vxlan_header_ipv6(out_dev, encap_header,
-                                     ipv6_encap_size, e->h_dest, ttl,
+                                     ipv6_encap_size, e->h_dest, tos, ttl,
                                      &fl6.daddr,
                                      &fl6.saddr, tun_key->tp_dst,
                                      tunnel_id_to_key32(tun_key->tun_id));