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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 /drivers/net/hamradio/bpqether.c
parent6d34b1c27a72d5d1c73c567b2f6b1fde316e0eae (diff)
downloadlinux-e730c15519d09ea528b4d2f1103681fa5937c0e6.tar.bz2
[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 'drivers/net/hamradio/bpqether.c')
-rw-r--r--drivers/net/hamradio/bpqether.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index 1699d42d13ca..85fb8e7efacf 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -173,6 +173,9 @@ static int bpq_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_ty
struct ethhdr *eth;
struct bpqdev *bpq;
+ if (dev->nd_net != &init_net)
+ goto drop;
+
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL)
return NET_RX_DROP;