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authorYOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>2010-03-28 07:15:45 +0000
committerDavid S. Miller <davem@davemloft.net>2010-03-28 19:34:26 -0700
commit54c1a859efd9fd6cda05bc700315ba2519c14eba (patch)
treec649e270baaa39f1dadbc0f2bc27842ea618dbb6
parent7855f761998893bb6bf861d55df95036fc9e36ab (diff)
downloadlinux-stericsson-54c1a859efd9fd6cda05bc700315ba2519c14eba.tar.gz
ipv6: Don't drop cache route entry unless timer actually expired.
This is ipv6 variant of the commit 5e016cbf6.. ("ipv4: Don't drop redirected route cache entry unless PTMU actually expired") by Guenter Roeck <guenter.roeck@ericsson.com>. Remove cache route entry in ipv6_negative_advice() only if the timer is expired. Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv6/route.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 7fcb0e5d1213..0d7713c5c206 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -890,12 +890,17 @@ static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
struct rt6_info *rt = (struct rt6_info *) dst;
if (rt) {
- if (rt->rt6i_flags & RTF_CACHE)
- ip6_del_rt(rt);
- else
+ if (rt->rt6i_flags & RTF_CACHE) {
+ if (rt6_check_expired(rt)) {
+ ip6_del_rt(rt);
+ dst = NULL;
+ }
+ } else {
dst_release(dst);
+ dst = NULL;
+ }
}
- return NULL;
+ return dst;
}
static void ip6_link_failure(struct sk_buff *skb)