[SCTP] Fix af->dst_saddr() to fill in the port.

include/net/sctp/structs.h

@@ -254,7 +254,8 @@ struct sctp_af {
 	void            (*copy_addrlist) (struct list_head *,
 					  struct net_device *);
 	void            (*dst_saddr)    (union sctp_addr *saddr,
-					 struct dst_entry *dst);
+					 struct dst_entry *dst,
+					 unsigned short port);
 	int             (*cmp_addr)     (const union sctp_addr *addr1,
 					 const union sctp_addr *addr2);
 	void            (*addr_copy)    (union sctp_addr *dst,

net/sctp/ipv6.c

@@ -256,10 +256,12 @@ static void sctp_v6_to_sk(union sctp_addr *addr, struct sock *sk)
 }
 
 /* Initialize a sctp_addr from a dst_entry. */
-static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst)
+static void sctp_v6_dst_saddr(union sctp_addr *addr, struct dst_entry *dst,
+			      unsigned short port)
 {
 	struct rt6_info *rt = (struct rt6_info *)dst;
 	addr->sa.sa_family = AF_INET6;
+	addr->v6.sin6_port = port;
 	ipv6_addr_copy(&addr->v6.sin6_addr, &rt->rt6i_src.addr);
 }
 

net/sctp/protocol.c

@@ -292,10 +292,12 @@ static void sctp_v4_to_sk(union sctp_addr *addr, struct sock *sk)
 
 
 /* Initialize a sctp_addr from a dst_entry. */
-static void sctp_v4_dst_saddr(union sctp_addr *saddr, struct dst_entry *dst)
+static void sctp_v4_dst_saddr(union sctp_addr *saddr, struct dst_entry *dst,
+			      unsigned short port)
 {
 	struct rtable *rt = (struct rtable *)dst;
 	saddr->v4.sin_family = AF_INET;
+	saddr->v4.sin_port = port;
 	saddr->v4.sin_addr.s_addr = rt->rt_src;
 }
 

net/sctp/transport.c

@@ -242,7 +242,7 @@ void sctp_transport_route(struct sctp_transport *transport,
 		list_for_each(pos, &bp->address_list) {
 			laddr = list_entry(pos, struct sockaddr_storage_list,
 					   list);
-			af->dst_saddr(&dst_saddr, dst);
+			af->dst_saddr(&dst_saddr, dst, bp->port);
 	                if (opt->pf->cmp_addr(&dst_saddr, &laddr->a, opt))
 				goto out_unlock;
 		}