sctp: Make the endpoint hashtable handle multiple network namespaces

- Use struct net in the hash calculation
- Use sock_net(endpoint.base.sk) in the endpoint lookups.
- On receive calculate the network namespace from skb->dev.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 68a385d7c3bd..50c87b4ad765 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -302,11 +302,13 @@ void sctp_endpoint_put(struct sctp_endpoint *ep)
 
 /* Is this the endpoint we are looking for?  */
 struct sctp_endpoint *sctp_endpoint_is_match(struct sctp_endpoint *ep,
+                                               struct net *net,
                                                const union sctp_addr *laddr)
 {
         struct sctp_endpoint *retval = NULL;
 
-        if (htons(ep->base.bind_addr.port) == laddr->v4.sin_port) {
+        if ((htons(ep->base.bind_addr.port) == laddr->v4.sin_port) &&
+            net_eq(sock_net(ep->base.sk), net)) {
                 if (sctp_bind_addr_match(&ep->base.bind_addr, laddr,
                                          sctp_sk(ep->base.sk)))
                         retval = ep;