aboutsummaryrefslogtreecommitdiffstats
path: root/net/ipv6/addrconf.c
diff options
context:
space:
mode:
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/ipv6/addrconf.c
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/ipv6/addrconf.c')
-rw-r--r--net/ipv6/addrconf.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index cd2db728d183..1a6783646520 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2259,6 +2259,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
2259 int run_pending = 0; 2259 int run_pending = 0;
2260 int err; 2260 int err;
2261 2261
2262 if (dev->nd_net != &init_net)
2263 return NOTIFY_DONE;
2264
2262 switch(event) { 2265 switch(event) {
2263 case NETDEV_REGISTER: 2266 case NETDEV_REGISTER:
2264 if (!idev && dev->mtu >= IPV6_MIN_MTU) { 2267 if (!idev && dev->mtu >= IPV6_MIN_MTU) {