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switchdev: check if the vlan id is in the proper vlan range 

VLANs 0 and 4095 are reserved and shouldn't be used, add checks to
switchdev similar to the bridge. Also make sure ids above 4095 cannot
be passed either.

Fixes: 47f8328bb1 ("switchdev: add new switchdev bridge setlink")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Acked-by: Scott Feldman <sfeldma@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nikolay Aleksandrov 2015-10-12 14:31:01 +02:00 committed by David S. Miller
parent 1f225031fe
commit 87aaf2caed
1 changed files with 3 additions and 0 deletions
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3
net/switchdev/switchdev.c
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@ -16,6 +16,7 @@
#include <linux/notifier.h>
#include <linux/netdevice.h>
#include <linux/if_bridge.h>
#include <linux/if_vlan.h>
#include <net/ip_fib.h>
#include <net/switchdev.h>
@ -634,6 +635,8 @@ static int switchdev_port_br_afspec(struct net_device *dev,
if (nla_len(attr) != sizeof(struct bridge_vlan_info))
return -EINVAL;
vinfo = nla_data(attr);
if (!vinfo->vid || vinfo->vid >= VLAN_VID_MASK)
return -EINVAL;
vlan->flags = vinfo->flags;
if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
if (vlan->vid_begin)