diff options
| author | Eli Britstein <elibr@mellanox.com> | 2018-12-09 09:17:18 +0200 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-12-20 05:06:02 -0800 |
| commit | 05ada1adb65acd533f978651e7001e3568e7b98a (patch) | |
| tree | 4ee1c0bdfc2ac653647f30b907310a1209b2c324 /drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c | |
| parent | b168cff0b9b216e68215cdb28db999f542482a56 (diff) | |
net/mlx5e: Tunnel encap ETH header helper function
In tunnel encap we prepare the encap header for IPv4/6 cases, in two
separate functions. For ETH header generation the code is almost
duplicated.
Move the ETH header generation code from IPv4/6 functions to a helper
function, with no functional change.
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c index 0d24e9648c21..f90c67c9add0 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c @@ -180,6 +180,19 @@ static int mlx5e_gen_ip_tunnel_header(char buf[], __u8 *ip_proto, return err; } +static char *gen_eth_tnl_hdr(char *buf, struct net_device *dev, + struct mlx5e_encap_entry *e, + u16 proto) +{ + struct ethhdr *eth = (struct ethhdr *)buf; + + ether_addr_copy(eth->h_dest, e->h_dest); + ether_addr_copy(eth->h_source, dev->dev_addr); + eth->h_proto = htons(proto); + + return (char *)eth + ETH_HLEN; +} + int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv, struct net_device *mirred_dev, struct mlx5e_encap_entry *e) @@ -193,7 +206,6 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv, struct neighbour *n = NULL; struct flowi4 fl4 = {}; char *encap_header; - struct ethhdr *eth; u8 nud_state, ttl; struct iphdr *ip; int err; @@ -242,13 +254,10 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv, read_unlock_bh(&n->lock); /* add ethernet header */ - eth = (struct ethhdr *)encap_header; - ether_addr_copy(eth->h_dest, e->h_dest); - ether_addr_copy(eth->h_source, out_dev->dev_addr); - eth->h_proto = htons(ETH_P_IP); + ip = (struct iphdr *)gen_eth_tnl_hdr(encap_header, out_dev, e, + ETH_P_IP); /* add ip header */ - ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr)); ip->tos = tun_key->tos; ip->version = 0x4; ip->ihl = 0x5; @@ -308,7 +317,6 @@ int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv, struct flowi6 fl6 = {}; struct ipv6hdr *ip6h; char *encap_header; - struct ethhdr *eth; u8 nud_state, ttl; int err; @@ -356,13 +364,10 @@ int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv, read_unlock_bh(&n->lock); /* add ethernet header */ - eth = (struct ethhdr *)encap_header; - ether_addr_copy(eth->h_dest, e->h_dest); - ether_addr_copy(eth->h_source, out_dev->dev_addr); - eth->h_proto = htons(ETH_P_IPV6); + ip6h = (struct ipv6hdr *)gen_eth_tnl_hdr(encap_header, out_dev, e, + ETH_P_IPV6); /* add ip header */ - ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr)); ip6_flow_hdr(ip6h, tun_key->tos, 0); /* the HW fills up ipv6 payload len */ ip6h->hop_limit = ttl; |