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authorEric W. Biederman <ebiederm@xmission.com>2007-09-17 14:53:39 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:49:08 -0400
commite730c15519d09ea528b4d2f1103681fa5937c0e6 (patch)
treec117294523f4d004fb1d740610b6403e5744cdfc /net/8021q/vlan_dev.c
parent6d34b1c27a72d5d1c73c567b2f6b1fde316e0eae (diff)
[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/vlan_dev.c')
-rw-r--r--net/8021q/vlan_dev.c5
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,
122 unsigned short vlan_TCI; 122 unsigned short vlan_TCI;
123 __be16 proto; 123 __be16 proto;
124 124
125 if (dev->nd_net != &init_net) {
126 kfree_skb(skb);
127 return -1;
128 }
129
125 if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) 130 if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
126 return -1; 131 return -1;
127 132