sctp: Make the address lists per network namespace

- Move the address lists into struct net
- Add per network namespace initialization and cleanup
- Pass around struct net so it is everywhere I need it.
- Rename all of the global variable references into references
  to the variables moved into struct net

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>

include/net/netns/sctp.h

@@ -0,0 +1,21 @@
+#ifndef __NETNS_SCTP_H__
+#define __NETNS_SCTP_H__
+
+struct netns_sctp {
+	/* This is the global local address list.
+	 * We actively maintain this complete list of addresses on
+	 * the system by catching address add/delete events.
+	 *
+	 * It is a list of sctp_sockaddr_entry.
+	 */
+	struct list_head local_addr_list;
+	struct list_head addr_waitq;
+	struct timer_list addr_wq_timer;
+	struct list_head auto_asconf_splist;
+	spinlock_t addr_wq_lock;
+
+	/* Lock that protects the local_addr_list writers */
+	spinlock_t local_addr_lock;
+};
+
+#endif /* __NETNS_SCTP_H__ */