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net/mlx5e: Verify encapsulation is supported

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When mlx5e_attach_encap() calls mlx5e_get_tc_tun() to get the tunnel
info data struct, check that returned value is not NULL, as would be in
the case of unsupported encapsulation.

Fixes: d386939a32 ("net/mlx5e: Rearrange tc tunnel code in a modular way")
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eli Cohen 2019-06-27 08:34:41 +03:00 committed by Saeed Mahameed
parent f384e62a82
commit d71f895c31
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
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@ -2647,6 +2647,10 @@ static int mlx5e_attach_encap(struct mlx5e_priv *priv,
family = ip_tunnel_info_af(tun_info);
key.ip_tun_key = &tun_info->key;
key.tc_tunnel = mlx5e_get_tc_tun(mirred_dev);
if (!key.tc_tunnel) {
NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel");
return -EOPNOTSUPP;
}
hash_key = hash_encap_info(&key);