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, 2 insertions, 1 deletions

diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index ed7139ea7978..2165a7ed25f1 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -154,6 +154,7 @@ SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
         struct ipv6_pinfo *np;
         sk_buff_data_t saveip, savesctp;
         int err;
+        struct net *net = dev_net(skb->dev);
 
         idev = in6_dev_get(skb->dev);
 
@@ -162,7 +163,7 @@ SCTP_STATIC void sctp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
         savesctp = skb->transport_header;
         skb_reset_network_header(skb);
         skb_set_transport_header(skb, offset);
-        sk = sctp_err_lookup(AF_INET6, skb, sctp_hdr(skb), &asoc, &transport);
+        sk = sctp_err_lookup(net, AF_INET6, skb, sctp_hdr(skb), &asoc, &transport);
         /* Put back, the original pointers. */
         skb->network_header   = saveip;
         skb->transport_header = savesctp;