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ipv6: Don't drop cache route entry unless timer actually expired.

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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>
This commit is contained in:
YOSHIFUJI Hideaki / 吉藤英明 2010-03-28 07:15:45 +00:00 committed by David S. Miller
parent 7855f76199
commit 54c1a859ef
1 changed files with 9 additions and 4 deletions
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13
net/ipv6/route.c
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@ -890,12 +890,17 @@ static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
struct rt6_info *rt = (struct rt6_info *) dst; struct rt6_info *rt = (struct rt6_info *) dst;
if (rt) { if (rt) {
if (rt->rt6i_flags & RTF_CACHE) if (rt->rt6i_flags & RTF_CACHE) {
ip6_del_rt(rt); if (rt6_check_expired(rt)) {
else ip6_del_rt(rt);
dst = NULL;
}
} else {
dst_release(dst); dst_release(dst);
dst = NULL;
}
} }
return NULL; return dst;
} }
static void ip6_link_failure(struct sk_buff *skb) static void ip6_link_failure(struct sk_buff *skb)