Commit 24c63bbc authored by David Ahern's avatar David Ahern Committed by David S. Miller
Browse files

net: vrf: do not allow table id 0

Frank reported that vrf devices can be created with a table id of 0.
This breaks many of the run time table id checks and should not be
allowed. Detect this condition at create time and fail with EINVAL.

Fixes: 193125db

 ("net: Introduce VRF device driver")
Reported-by: default avatarFrank Kellermann <>
Signed-off-by: default avatarDavid Ahern <>
Signed-off-by: default avatarDavid S. Miller <>
parent a13c0652
......@@ -1252,6 +1252,8 @@ static int vrf_newlink(struct net *src_net, struct net_device *dev,
return -EINVAL;
vrf->tb_id = nla_get_u32(data[IFLA_VRF_TABLE]);
if (vrf->tb_id == RT_TABLE_UNSPEC)
return -EINVAL;
dev->priv_flags |= IFF_L3MDEV_MASTER;
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