From: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
To: netdev@vger.kernel.org
Cc: yoshfuji@linux-ipv6.org, xiyou.wangcong@gmail.com
Subject: [RFC(v2) net-next 08/13] ipv6: Do not deoend on rt->n in ip6_dst_lookup_tail().
Date: Wed, 16 Jan 2013 01:46:07 +0900 [thread overview]
Message-ID: <50F587CF.1090306@linux-ipv6.org> (raw)
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
---
net/ipv6/ip6_output.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 9fc5d1d..b2fe048 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -921,8 +921,12 @@ static int ip6_dst_lookup_tail(struct sock *sk,
* dst entry of the nexthop router
*/
rt = (struct rt6_info *) *dst;
- n = rt->n;
- if (n && !(n->nud_state & NUD_VALID)) {
+ rcu_read_lock_bh();
+ n = __ipv6_neigh_lookup_noref(rt->dst.dev, rt6_nexthop(rt, &fl6->daddr));
+ err = n && !(n->nud_state & NUD_VALID) ? -EINVAL : 0;
+ rcu_read_unlock_bh();
+
+ if (err) {
struct inet6_ifaddr *ifp;
struct flowi6 fl_gw6;
int redirect;
--
1.7.9.5
next reply other threads:[~2013-01-15 16:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-15 16:46 YOSHIFUJI Hideaki [this message]
2013-01-16 6:49 ` [RFC(v2) net-next 08/13] ipv6: Do not deoend on rt->n in ip6_dst_lookup_tail() Cong Wang
2013-01-16 12:27 ` YOSHIFUJI Hideaki
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