From ea67f1fb5976ad72d27e45dff42017894f30b563 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 13 Dec 2011 17:35:06 -0500 Subject: ipv6: Check dest prefix length on original route not copied one in rt6_alloc_cow(). [ Upstream commit bb3c36863e8001fc21a88bebfdead4da4c23e848 ] After commit 8e2ec639173f325977818c45011ee176ef2b11f6 ("ipv6: don't use inetpeer to store metrics for routes.") the test in rt6_alloc_cow() for setting the ANYCAST flag is now wrong. 'rt' will always now have a plen of 128, because it is set explicitly to 128 by ip6_rt_copy. So to restore the semantics of the test, check the destination prefix length of 'ort'. Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/route.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net') diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 57b82dc1ae91..f02fe523bd3a 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -725,7 +725,7 @@ static struct rt6_info *rt6_alloc_cow(const struct rt6_info *ort, int attempts = !in_softirq(); if (!(rt->rt6i_flags&RTF_GATEWAY)) { - if (rt->rt6i_dst.plen != 128 && + if (ort->rt6i_dst.plen != 128 && ipv6_addr_equal(&ort->rt6i_dst.addr, daddr)) rt->rt6i_flags |= RTF_ANYCAST; ipv6_addr_copy(&rt->rt6i_gateway, daddr); -- cgit v1.2.3