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Commit 8b358056 authored by Vlad Yasevich's avatar Vlad Yasevich Committed by Vladislav Yasevich
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[SCTP]: Allow unspecified port in sctp_bindx() 



Allow sctp_bindx() to accept multiple address with
unspecified port.  In this case, all addresses inherit
the first bound port.  We still catch full mis-matches.

Signed-off-by: default avatarVlad Yasevich <vladislav.yasevich@hp.com>
Acked-by: default avatarSridhar Samudrala <sri@us.ibm.com>
parent d570ee49

net/sctp/socket.c

+11 −4
Original line number Diff line number Diff line
@@ -333,13 +333,20 @@ SCTP_STATIC int sctp_do_bind(struct sock *sk, union sctp_addr *addr, int len) 
	if (!sp->pf->bind_verify(sp, addr))

		return -EADDRNOTAVAIL;



	/* We must either be unbound, or bind to the same port.  */

	if (bp->port && (snum != bp->port)) {

	/* We must either be unbound, or bind to the same port.

	 * It's OK to allow 0 ports if we are already bound.

	 * We'll just inhert an already bound port in this case

	 */

	if (bp->port) {

		if (!snum)

			snum = bp->port;

		else if (snum != bp->port) {

			SCTP_DEBUG_PRINTK("sctp_do_bind:"

				  " New port %d does not match existing port "

				  "%d.\n", snum, bp->port);

			return -EINVAL;

		}

	}



	if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))

		return -EACCES;