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net: maintain namespace isolation between vlan and real device

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In the vlan and macvlan drivers, the start_xmit function forwards
data to the dev_queue_xmit function for another device, which may
potentially belong to a different namespace.

To make sure that classification stays within a single namespace,
this resets the potentially critical fields.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnd Bergmann
2010-01-30 12:23:03 +00:00
committed by David S. Miller
parent 6884b348ed
commit 8a83a00b07
4 changed files with 42 additions and 6 deletions
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2
net/8021q/vlan_dev.c
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@@ -322,7 +322,7 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
}
skb->dev = vlan_dev_info(dev)->real_dev;
skb_set_dev(skb, vlan_dev_info(dev)->real_dev);
len = skb->len;
ret = dev_queue_xmit(skb);