path: root/net/x25
diff options
authorEric W. Biederman <ebiederm@xmission.com>2007-09-17 11:53:39 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:49:08 -0700
commite730c15519d09ea528b4d2f1103681fa5937c0e6 (patch)
treec117294523f4d004fb1d740610b6403e5744cdfc /net/x25
parent[NET]: Initialize the network namespace of network devices. (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/x25')
1 files changed, 3 insertions, 0 deletions
diff --git a/net/x25/x25_dev.c b/net/x25/x25_dev.c
index 848a6b6f90a6..f0679d283110 100644
--- a/net/x25/x25_dev.c
+++ b/net/x25/x25_dev.c
@@ -95,6 +95,9 @@ int x25_lapb_receive_frame(struct sk_buff *skb, struct net_device *dev,
struct sk_buff *nskb;
struct x25_neigh *nb;
+ if (dev->nd_net != &init_net)
+ goto drop;
nskb = skb_copy(skb, GFP_ATOMIC);
if (!nskb)
goto drop;