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| author | Eric W. Biederman <ebiederm@xmission.com> | 2007-09-17 11:53:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:49:08 -0700 |
| commit | e730c15519d09ea528b4d2f1103681fa5937c0e6 (patch) | |
| tree | c117294523f4d004fb1d740610b6403e5744cdfc /net/8021q | |
| parent | 6d34b1c27a72d5d1c73c567b2f6b1fde316e0eae (diff) | |
| download | linux-e730c15519d09ea528b4d2f1103681fa5937c0e6.tar.gz linux-e730c15519d09ea528b4d2f1103681fa5937c0e6.tar.bz2 linux-e730c15519d09ea528b4d2f1103681fa5937c0e6.zip | |
[NET]: Make packet reception network namespace safe
This patch modifies every packet receive function
registered with dev_add_pack() to drop packets if they
are not from the initial network namespace.
This should ensure that the various network stacks do
not receive packets in a anything but the initial network
namespace until the code has been converted and is ready
for them.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q')
| -rw-r--r-- | net/8021q/vlan_dev.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 328759c32d61..6644e8f5f199 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -122,6 +122,11 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev, unsigned short vlan_TCI; __be16 proto; + if (dev->nd_net != &init_net) { + kfree_skb(skb); + return -1; + } + if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) return -1; |