blob: a9b19d086a8ba66452999cb282a6494306017fa2 [file] [log] [blame]
From foo@baz Fri Mar 16 15:43:17 CET 2018
From: Yossef Efraim <yossefe@mellanox.com>
Date: Tue, 28 Nov 2017 11:49:28 +0200
Subject: xfrm: Fix xfrm_replay_overflow_offload_esn
From: Yossef Efraim <yossefe@mellanox.com>
[ Upstream commit 0ba23a211360af7b6658e4fcfc571970bbbacc55 ]
In case of wrap around, replay_esn->oseq_hi is not updated
before it is tested for it's actual value, leading function
to fail with overflow indication and packets being dropped.
This patch updates replay_esn->oseq_hi in the right place.
Fixes: d7dbefc45cf5 ("xfrm: Add xfrm_replay_overflow functions for offloading")
Signed-off-by: Yossef Efraim <yossefe@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/xfrm/xfrm_replay.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -666,7 +666,7 @@ static int xfrm_replay_overflow_offload_
if (unlikely(oseq < replay_esn->oseq)) {
XFRM_SKB_CB(skb)->seq.output.hi = ++oseq_hi;
xo->seq.hi = oseq_hi;
-
+ replay_esn->oseq_hi = oseq_hi;
if (replay_esn->oseq_hi == 0) {
replay_esn->oseq--;
replay_esn->oseq_hi--;
@@ -678,7 +678,6 @@ static int xfrm_replay_overflow_offload_
}
replay_esn->oseq = oseq;
- replay_esn->oseq_hi = oseq_hi;
if (xfrm_aevent_is_on(net))
x->repl->notify(x, XFRM_REPLAY_UPDATE);