diff options
author | Eric W. Biederman <ebiederm@xmission.com> | 2007-09-17 14:53:39 -0400 |
---|---|---|
committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 19:49:08 -0400 |
commit | e730c15519d09ea528b4d2f1103681fa5937c0e6 (patch) | |
tree | c117294523f4d004fb1d740610b6403e5744cdfc /drivers/net/wan/hdlc.c | |
parent | 6d34b1c27a72d5d1c73c567b2f6b1fde316e0eae (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 'drivers/net/wan/hdlc.c')
-rw-r--r-- | drivers/net/wan/hdlc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/wan/hdlc.c b/drivers/net/wan/hdlc.c index 65ad2e24caf0..3b57350eacca 100644 --- a/drivers/net/wan/hdlc.c +++ b/drivers/net/wan/hdlc.c | |||
@@ -36,6 +36,7 @@ | |||
36 | #include <linux/rtnetlink.h> | 36 | #include <linux/rtnetlink.h> |
37 | #include <linux/notifier.h> | 37 | #include <linux/notifier.h> |
38 | #include <linux/hdlc.h> | 38 | #include <linux/hdlc.h> |
39 | #include <net/net_namespace.h> | ||
39 | 40 | ||
40 | 41 | ||
41 | static const char* version = "HDLC support module revision 1.21"; | 42 | static const char* version = "HDLC support module revision 1.21"; |
@@ -66,6 +67,12 @@ static int hdlc_rcv(struct sk_buff *skb, struct net_device *dev, | |||
66 | struct packet_type *p, struct net_device *orig_dev) | 67 | struct packet_type *p, struct net_device *orig_dev) |
67 | { | 68 | { |
68 | struct hdlc_device_desc *desc = dev_to_desc(dev); | 69 | struct hdlc_device_desc *desc = dev_to_desc(dev); |
70 | |||
71 | if (dev->nd_net != &init_net) { | ||
72 | kfree_skb(skb); | ||
73 | return 0; | ||
74 | } | ||
75 | |||
69 | if (desc->netif_rx) | 76 | if (desc->netif_rx) |
70 | return desc->netif_rx(skb); | 77 | return desc->netif_rx(skb); |
71 | 78 | ||