sctp: Make the association hashtable handle multiple network namespaces

- Use struct net in the hash calculation
- Use sock_net(association.base.sk) in the association lookups.
- On receive calculate the network namespace from skb->dev.
- Pass struct net from receive down to the functions that actually
  do the association lookup.

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, 4 insertions, 2 deletions

diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 50c87b4ad765..6b763939345b 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -345,7 +345,8 @@ static struct sctp_association *__sctp_endpoint_lookup_assoc(
 
         rport = ntohs(paddr->v4.sin_port);
 
-        hash = sctp_assoc_hashfn(ep->base.bind_addr.port, rport);
+        hash = sctp_assoc_hashfn(sock_net(ep->base.sk), ep->base.bind_addr.port,
+                                 rport);
         head = &sctp_assoc_hashtable[hash];
         read_lock(&head->lock);
         sctp_for_each_hentry(epb, node, &head->chain) {
@@ -388,13 +389,14 @@ int sctp_endpoint_is_peeled_off(struct sctp_endpoint *ep,
 {
         struct sctp_sockaddr_entry *addr;
         struct sctp_bind_addr *bp;
+        struct net *net = sock_net(ep->base.sk);
 
         bp = &ep->base.bind_addr;
         /* This function is called with the socket lock held,
          * so the address_list can not change.
          */
         list_for_each_entry(addr, &bp->address_list, list) {
-                if (sctp_has_association(&addr->a, paddr))
+                if (sctp_has_association(net, &addr->a, paddr))
                         return 1;
         }