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authorAlexey Dobriyan <adobriyan@gmail.com>2008-11-13 10:23:51 +0300
committerDavid S. Miller <davem@davemloft.net>2008-11-13 10:23:51 +0300
commit9c0188acf6dd6990bac9cd906cd554a1476c6d12 (patch)
tree100ef7c91c64efeb05b3c304d1f8a18dfcb3f941 /net/ipv4/ip_input.c
parent6e093d9dfffc9a02cd54d36904c62f705f09900a (diff)
downloadlinux-9c0188acf6dd6990bac9cd906cd554a1476c6d12.tar.xz
net: shy netns_ok check
Failure to pass netns_ok check is SILENT, except some MIB counter is incremented somewhere. And adding "netns_ok = 1" (after long head-scratching session) is usually the last step in making some protocol netns-ready... Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_input.c')
-rw-r--r--net/ipv4/ip_input.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 861978a4f1a8..cfb38ac9d698 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -209,9 +209,17 @@ static int ip_local_deliver_finish(struct sk_buff *skb)
hash = protocol & (MAX_INET_PROTOS - 1);
ipprot = rcu_dereference(inet_protos[hash]);
- if (ipprot != NULL && (net == &init_net || ipprot->netns_ok)) {
+ if (ipprot != NULL) {
int ret;
+ if (!net_eq(net, &init_net) && !ipprot->netns_ok) {
+ if (net_ratelimit())
+ printk("%s: proto %d isn't netns-ready\n",
+ __func__, protocol);
+ kfree_skb(skb);
+ goto out;
+ }
+
if (!ipprot->no_policy) {
if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) {
kfree_skb(skb);