Commit 6623c60d authored by Nikolay Aleksandrov's avatar Nikolay Aleksandrov Committed by David S. Miller

bridge: vlan: enforce no pvid flag in vlan ranges

Currently it's possible for someone to send a vlan range to the kernel
with the pvid flag set which will result in the pvid bouncing from a
vlan to vlan and isn't correct, it also introduces problems for hardware
where it doesn't make sense having more than 1 pvid. iproute2 already
enforces this, so let's enforce it on kernel-side as well.
Reported-by: default avatarElad Raz <eladr@mellanox.com>
Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cbb41b91
......@@ -524,6 +524,9 @@ static int br_afspec(struct net_bridge *br,
if (vinfo_start)
return -EINVAL;
vinfo_start = vinfo;
/* don't allow range of pvids */
if (vinfo_start->flags & BRIDGE_VLAN_INFO_PVID)
return -EINVAL;
continue;
}
......
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