From e730c15519d09ea528b4d2f1103681fa5937c0e6 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 17 Sep 2007 11:53:39 -0700 Subject: [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 Signed-off-by: David S. Miller --- net/8021q/vlan_dev.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'net/8021q') 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; -- cgit v1.2.3-59-g8ed1b