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authorEric W. Biederman <ebiederm@xmission.com>2007-09-12 07:02:17 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 19:49:09 -0400
commite9dc86534051b78e41e5b746cccc291b57a3a311 (patch)
tree1cd4a1dde4c51b6311749428a22cc8a8f5436825 /net/decnet
parente730c15519d09ea528b4d2f1103681fa5937c0e6 (diff)
[NET]: Make device event notification network namespace safe
Every user of the network device notifiers is either a protocol stack or a pseudo device. If a protocol stack that does not have support for multiple network namespaces receives an event for a device that is not in the initial network namespace it quite possibly can get confused and do the wrong thing. To avoid problems until all of the protocol stacks are converted this patch modifies all netdev event handlers to ignore events on devices that are not in the initial network namespace. As the rest of the code is made network namespace aware these checks can be removed. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/decnet')
-rw-r--r--net/decnet/af_decnet.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index aca4c4930eb6..83398da5d763 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -2089,6 +2089,9 @@ static int dn_device_event(struct notifier_block *this, unsigned long event,
2089{ 2089{
2090 struct net_device *dev = (struct net_device *)ptr; 2090 struct net_device *dev = (struct net_device *)ptr;
2091 2091
2092 if (dev->nd_net != &init_net)
2093 return NOTIFY_DONE;
2094
2092 switch(event) { 2095 switch(event) {
2093 case NETDEV_UP: 2096 case NETDEV_UP:
2094 dn_dev_up(dev); 2097 dn_dev_up(dev);