From: David Stevens <dlstevens@us.ibm.com>
Date: Thu, 15 Sep 2005 19:46:06 +0000 (-0600)
Subject: [PATCH] fix IPv6 per-socket multicast filtering in exact-match case
X-Git-Tag: v2.6.13.3~6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ce0c8dfdfdacc4d370ccd51fa5d4cd28118a9cf;p=thirdparty%2Fkernel%2Fstable.git

[PATCH] fix IPv6 per-socket multicast filtering in exact-match case

per-socket multicast filters were not being applied to all sockets
in the case of an exact-match bound address, due to an over-exuberant
"return" in the look-up code. Fix below. IPv4 does not have this problem.

Thanks to Hoerdt Mickael for reporting the bug.

Signed-off-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: Chris Wright <chrisw@osdl.org>
---

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index eff050ac70496..377f71ccf112f 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -404,9 +404,8 @@ static struct sock *udp_v6_mcast_next(struct sock *sk,
 				continue;
 
 			if (!ipv6_addr_any(&np->rcv_saddr)) {
-				if (ipv6_addr_equal(&np->rcv_saddr, loc_addr))
-					return s;
-				continue;
+				if (!ipv6_addr_equal(&np->rcv_saddr, loc_addr))
+					continue;
 			}
 			if(!inet6_mc_check(s, loc_addr, rmt_addr))
 				continue;