netdev - [PATCH] xfrm: check if packet is overdue on asynchronous code path

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Date:	Fri, 11 Jan 2013 16:12:45 +0800
From:	roy.qing.li@...il.com
To:	netdev@...r.kernel.org
Cc:	steffen.klassert@...unet.com
Subject: [PATCH] xfrm: check if packet is overdue on asynchronous code path

From: Li RongQing <roy.qing.li@...il.com>

Currently checking is only done on synchronous code path,
we should do the same checking on asynchronous code path.

Signed-off-by: Li RongQing <roy.qing.li@...il.com>
---
 net/xfrm/xfrm_input.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index ab2bb42..d034324 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -199,6 +199,12 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
 
 resume:
 		spin_lock(&x->lock);
+
+		if (async && xfrm_state_check_expire(x)) {
+			XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEEXPIRED);
+			goto drop_unlock;
+		}
+
 		if (nexthdr <= 0) {
 			if (nexthdr == -EBADMSG) {
 				xfrm_audit_state_icvfail(x, skb,
-- 
1.7.10.4

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