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authorDenis V. Lunev <den@openvz.org>2008-03-24 15:33:00 -0700
committerDavid S. Miller <davem@davemloft.net>2008-03-24 15:33:00 -0700
commitf145049a06f470d0489f47cb83ff3ccb2a0de622 (patch)
tree2d25f9af4c1e599763f01f9338ed8bf0517ddac1
parent0be43f82c4f4c4a999b53cf794513f7f1a4ed7f3 (diff)
[NETNS]: Drop packets in the non-initial namespace on the per/protocol basis.
IP layer now can handle multiple namespaces normally. So, process such packets normally and drop them only if the transport layer is not aware about namespaces. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/protocol.h3
-rw-r--r--net/ipv4/ip_input.c8
2 files changed, 6 insertions, 5 deletions
diff --git a/include/net/protocol.h b/include/net/protocol.h
index ad8c584233a..8d024d7cb74 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -39,7 +39,8 @@ struct net_protocol {
int (*gso_send_check)(struct sk_buff *skb);
struct sk_buff *(*gso_segment)(struct sk_buff *skb,
int features);
- int no_policy;
+ unsigned int no_policy:1,
+ netns_ok:1;
};
#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index eb1fa27dc0c..2aeea5d1542 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -199,6 +199,8 @@ int ip_call_ra_chain(struct sk_buff *skb)
static int ip_local_deliver_finish(struct sk_buff *skb)
{
+ struct net *net = skb->dev->nd_net;
+
__skb_pull(skb, ip_hdrlen(skb));
/* Point into the IP datagram, just past the header. */
@@ -214,7 +216,8 @@ static int ip_local_deliver_finish(struct sk_buff *skb)
raw = raw_local_deliver(skb, protocol);
hash = protocol & (MAX_INET_PROTOS - 1);
- if ((ipprot = rcu_dereference(inet_protos[hash])) != NULL) {
+ ipprot = rcu_dereference(inet_protos[hash]);
+ if (ipprot != NULL && (net == &init_net || ipprot->netns_ok)) {
int ret;
if (!ipprot->no_policy) {
@@ -375,9 +378,6 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
struct iphdr *iph;
u32 len;
- if (dev->nd_net != &init_net)
- goto drop;
-
/* When the interface is in promisc. mode, drop all the crap
* that it receives, do not try to analyse it.
*/