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Date: Wed, 19 Dec 2018 13:02:44 -0800
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Eli Britstein <elibr@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 11/11] net/mlx5e: Support tunnel encap over tagged Ethernet
From: Eli Britstein <elibr@...lanox.com>
Generate encap header depending on the routed device to support
native/tagged Ethernet header.
Signed-off-by: Eli Britstein <elibr@...lanox.com>
Reviewed-by: Roi Dayan <roid@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
.../ethernet/mellanox/mlx5/core/en/tc_tun.c | 44 ++++++++++---------
1 file changed, 24 insertions(+), 20 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 a6990744730a..046948ead152 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
@@ -15,10 +15,6 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
struct net_device *uplink_dev, *uplink_upper;
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_upper = netdev_master_upper_dev_get(uplink_dev);
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
*/
if (!switchdev_port_same_parent_id(priv->netdev, dev) ||
- dst_is_lag_dev)
- *out_dev = uplink_dev;
- else if (!mlx5e_eswitch_rep(dev))
- return -EOPNOTSUPP;
- else
- *out_dev = 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;
+ else if (mlx5e_eswitch_rep(dev))
+ *out_dev = *route_dev;
+ else
+ return -EOPNOTSUPP;
+ }
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,
struct net_device *mirred_dev,
struct net_device **out_dev,
+ struct net_device **route_dev,
struct flowi4 *fl4,
struct neighbour **out_n,
u8 *out_ttl)
@@ -61,7 +64,7 @@ static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
return -EOPNOTSUPP;
#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)
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,
struct net_device *mirred_dev,
struct net_device **out_dev,
+ struct net_device **route_dev,
struct flowi6 *fl6,
struct neighbour **out_n,
u8 *out_ttl)
@@ -105,7 +109,7 @@ static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
if (!(*out_ttl))
*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)
return ret;
#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);
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 flowi4 fl4 = {};
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;
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);
if (err)
return err;
ipv4_encap_size =
- ETH_HLEN +
+ (is_vlan_dev(route_dev) ? VLAN_ETH_HLEN : ETH_HLEN) +
sizeof(struct iphdr) +
e->tunnel_hlen;
@@ -268,7 +272,7 @@ int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv,
read_unlock_bh(&n->lock);
/* 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);
/* 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);
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 flowi6 fl6 = {};
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.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);
if (err)
return err;
ipv6_encap_size =
- ETH_HLEN +
+ (is_vlan_dev(route_dev) ? VLAN_ETH_HLEN : ETH_HLEN) +
sizeof(struct ipv6hdr) +
e->tunnel_hlen;
@@ -381,7 +385,7 @@ int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv,
read_unlock_bh(&n->lock);
/* 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);
/* add ip header */
--
2.19.2
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