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Subject[PATCH net-next 1/3] xfrm: Fix xfrm_replay_overflow_offload_esn
Date
From: Yossef Efraim <yossefe@mellanox.com>

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>
---
net/xfrm/xfrm_replay.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index 8b23c5b..0250181 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -666,7 +666,7 @@ static int xfrm_replay_overflow_offload_esn(struct xfrm_state *x, struct sk_buff
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_esn(struct xfrm_state *x, struct sk_buff
}

replay_esn->oseq = oseq;
- replay_esn->oseq_hi = oseq_hi;

if (xfrm_aevent_is_on(net))
x->repl->notify(x, XFRM_REPLAY_UPDATE);
--
2.8.1
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