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net/mlx5e: Support tunnel encap over tagged Ethernet

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Generate encap header depending on the routed device to support
native/tagged Ethernet header.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eli Britstein 2018-12-03 17:09:54 +02:00 committed by Saeed Mahameed
parent aa331450b8
commit e32ee6c78e
1 changed files with 24 additions and 20 deletions
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40
drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
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@ -15,10 +15,6 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
struct net_device *uplink_dev, *uplink_upper; struct net_device *uplink_dev, *uplink_upper;
bool dst_is_lag_dev; bool dst_is_lag_dev;
/* we currently don't offload vlan on underlay */
if (is_vlan_dev(dev))
return -EOPNOTSUPP;
uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH); uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
uplink_upper = netdev_master_upper_dev_get(uplink_dev); uplink_upper = netdev_master_upper_dev_get(uplink_dev);
dst_is_lag_dev = (uplink_upper && dst_is_lag_dev = (uplink_upper &&
@ -30,12 +26,18 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
* it's a LAG device, use the uplink * it's a LAG device, use the uplink
*/ */
if (!switchdev_port_same_parent_id(priv->netdev, dev) || if (!switchdev_port_same_parent_id(priv->netdev, dev) ||
dst_is_lag_dev) dst_is_lag_dev) {
*route_dev = uplink_dev;
*out_dev = *route_dev;
} else {
*route_dev = dev;
if (is_vlan_dev(*route_dev))
*out_dev = uplink_dev; *out_dev = uplink_dev;
else if (!mlx5e_eswitch_rep(dev)) else if (mlx5e_eswitch_rep(dev))
return -EOPNOTSUPP; *out_dev = *route_dev;
else else
*out_dev = dev; return -EOPNOTSUPP;
}
return 0; return 0;
} }
@ -43,6 +45,7 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv, static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
struct net_device *mirred_dev, struct net_device *mirred_dev,
struct net_device **out_dev, struct net_device **out_dev,
struct net_device **route_dev,
struct flowi4 *fl4, struct flowi4 *fl4,
struct neighbour **out_n, struct neighbour **out_n,
u8 *out_ttl) u8 *out_ttl)
@ -61,7 +64,7 @@ static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
return -EOPNOTSUPP; return -EOPNOTSUPP;
#endif #endif
ret = get_route_and_out_devs(priv, rt->dst.dev, NULL, out_dev); ret = get_route_and_out_devs(priv, rt->dst.dev, route_dev, out_dev);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -87,6 +90,7 @@ static const char *mlx5e_netdev_kind(struct net_device *dev)
static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv, static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
struct net_device *mirred_dev, struct net_device *mirred_dev,
struct net_device **out_dev, struct net_device **out_dev,
struct net_device **route_dev,
struct flowi6 *fl6, struct flowi6 *fl6,
struct neighbour **out_n, struct neighbour **out_n,
u8 *out_ttl) u8 *out_ttl)
@ -105,7 +109,7 @@ static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
if (!(*out_ttl)) if (!(*out_ttl))
*out_ttl = ip6_dst_hoplimit(dst); *out_ttl = ip6_dst_hoplimit(dst);
ret = get_route_and_out_devs(priv, dst->dev, NULL, out_dev); ret = get_route_and_out_devs(priv, dst->dev, route_dev, out_dev);
if (ret < 0) if (ret < 0)
return ret; return ret;
#else #else
@ -210,7 +214,7 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv,
{ {
int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size); int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
struct ip_tunnel_key *tun_key = &e->tun_info.key; struct ip_tunnel_key *tun_key = &e->tun_info.key;
struct net_device *out_dev; struct net_device *out_dev, *route_dev;
struct neighbour *n = NULL; struct neighbour *n = NULL;
struct flowi4 fl4 = {}; struct flowi4 fl4 = {};
int ipv4_encap_size; int ipv4_encap_size;
@ -225,13 +229,13 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv,
fl4.saddr = tun_key->u.ipv4.src; fl4.saddr = tun_key->u.ipv4.src;
ttl = tun_key->ttl; ttl = tun_key->ttl;
err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev, err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev, &route_dev,
&fl4, &n, &ttl); &fl4, &n, &ttl);
if (err) if (err)
return err; return err;
ipv4_encap_size = ipv4_encap_size =
ETH_HLEN + (is_vlan_dev(route_dev) ? VLAN_ETH_HLEN : ETH_HLEN) +
sizeof(struct iphdr) + sizeof(struct iphdr) +
e->tunnel_hlen; e->tunnel_hlen;
@ -268,7 +272,7 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv,
read_unlock_bh(&n->lock); read_unlock_bh(&n->lock);
/* add ethernet header */ /* add ethernet header */
ip = (struct iphdr *)gen_eth_tnl_hdr(encap_header, out_dev, e, ip = (struct iphdr *)gen_eth_tnl_hdr(encap_header, route_dev, e,
ETH_P_IP); ETH_P_IP);
/* add ip header */ /* add ip header */
@ -323,7 +327,7 @@ int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv,
{ {
int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size); int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
struct ip_tunnel_key *tun_key = &e->tun_info.key; struct ip_tunnel_key *tun_key = &e->tun_info.key;
struct net_device *out_dev; struct net_device *out_dev, *route_dev;
struct neighbour *n = NULL; struct neighbour *n = NULL;
struct flowi6 fl6 = {}; struct flowi6 fl6 = {};
struct ipv6hdr *ip6h; struct ipv6hdr *ip6h;
@ -338,13 +342,13 @@ int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv,
fl6.daddr = tun_key->u.ipv6.dst; fl6.daddr = tun_key->u.ipv6.dst;
fl6.saddr = tun_key->u.ipv6.src; fl6.saddr = tun_key->u.ipv6.src;
err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev, err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev, &route_dev,
&fl6, &n, &ttl); &fl6, &n, &ttl);
if (err) if (err)
return err; return err;
ipv6_encap_size = ipv6_encap_size =
ETH_HLEN + (is_vlan_dev(route_dev) ? VLAN_ETH_HLEN : ETH_HLEN) +
sizeof(struct ipv6hdr) + sizeof(struct ipv6hdr) +
e->tunnel_hlen; e->tunnel_hlen;
@ -381,7 +385,7 @@ int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv,
read_unlock_bh(&n->lock); read_unlock_bh(&n->lock);
/* add ethernet header */ /* add ethernet header */
ip6h = (struct ipv6hdr *)gen_eth_tnl_hdr(encap_header, out_dev, e, ip6h = (struct ipv6hdr *)gen_eth_tnl_hdr(encap_header, route_dev, e,
ETH_P_IPV6); ETH_P_IPV6);
/* add ip header */ /* add ip header */