From: Tobias Brunner <tobias@strongswan.org>
Date: Tue, 29 Nov 2016 16:05:25 +0000 (+0100)
Subject: esp6: Fix integrity verification when ESN are used
X-Git-Tag: firefly_0821_release~176^2~4^2~9^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=52783ada69b4741cf0122bd593493cc6c3217b9b;p=firefly-linux-kernel-4.4.55.git

esp6: Fix integrity verification when ESN are used

commit a55e23864d381c5a4ef110df94b00b2fe121a70d upstream.

When handling inbound packets, the two halves of the sequence number
stored on the skb are already in network order.

Fixes: 000ae7b2690e ("esp6: Switch to new AEAD interface")
Signed-off-by: Tobias Brunner <tobias@strongswan.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 060a60b2f8a6..111ba55fd512 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -418,7 +418,7 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
 		esph = (void *)skb_push(skb, 4);
 		*seqhi = esph->spi;
 		esph->spi = esph->seq_no;
-		esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.input.hi);
+		esph->seq_no = XFRM_SKB_CB(skb)->seq.input.hi;
 		aead_request_set_callback(req, 0, esp_input_done_esn, skb);
 	}