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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/appletalk | |
| 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/appletalk')
| -rw-r--r-- | net/appletalk/aarp.c | 3 | ||||
| -rw-r--r-- | net/appletalk/ddp.c | 6 |
2 files changed, 9 insertions, 0 deletions
diff --git a/net/appletalk/aarp.c b/net/appletalk/aarp.c index 80b54148460f..9267f4818795 100644 --- a/net/appletalk/aarp.c +++ b/net/appletalk/aarp.c @@ -713,6 +713,9 @@ static int aarp_rcv(struct sk_buff *skb, struct net_device *dev, struct atalk_addr sa, *ma, da; struct atalk_iface *ifa; + if (dev->nd_net != &init_net) + goto out0; + /* We only do Ethernet SNAP AARP. */ if (dev->type != ARPHRD_ETHER) goto out0; diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c index fd1d52f09707..c1f1367cad48 100644 --- a/net/appletalk/ddp.c +++ b/net/appletalk/ddp.c @@ -1403,6 +1403,9 @@ static int atalk_rcv(struct sk_buff *skb, struct net_device *dev, int origlen; __u16 len_hops; + if (dev->nd_net != &init_net) + goto freeit; + /* Don't mangle buffer if shared */ if (!(skb = skb_share_check(skb, GFP_ATOMIC))) goto out; @@ -1488,6 +1491,9 @@ freeit: static int ltalk_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, struct net_device *orig_dev) { + if (dev->nd_net != &init_net) + goto freeit; + /* Expand any short form frames */ if (skb_mac_header(skb)[2] == 1) { struct ddpehdr *ddp; |