SCTP: Pick the correct port when binding to 0.

sctp_bindx() allows the use of unspecified port.  The problem is
that every address we bind to ends up selecting a new port if
the user specified port 0.  This patch allows re-use of the
already selected port when the port from bindx was 0.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 01c6364245b7..de7921226725 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -353,6 +353,7 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len)
          * The function sctp_get_port_local() does duplicate address
          * detection.
          */
+        addr->v4.sin_port = htons(snum);
         if ((ret = sctp_get_port_local(sk, addr))) {
                 if (ret == (long) sk) {
                         /* This endpoint has a conflicting address. */