netdev - [PATCH net-next 2/2] ppp: call skb_checksum_complete_unset in ppp_receive

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Message-ID: <1429564205-1661247-3-git-send-email-tom@herbertland.com>
Date:	Mon, 20 Apr 2015 14:10:05 -0700
From:	Tom Herbert <tom@...bertland.com>
To:	<netdev@...r.kernel.org>
Subject: [PATCH net-next 2/2] ppp: call skb_checksum_complete_unset in ppp_receive_frame

Call checksum_complete_unset in PPP receive to discard checksum-complete
value. PPP does not pull checksum for headers and also modifies packet
as in VJ compression.

Signed-off-by: Tom Herbert <tom@...bertland.com>
---
 drivers/net/ppp/ppp_generic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index af034db..9d15566 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -1716,6 +1716,7 @@ ppp_receive_frame(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
 {
 	/* note: a 0-length skb is used as an error indication */
 	if (skb->len > 0) {
+		skb_checksum_complete_unset(skb);
 #ifdef CONFIG_PPP_MULTILINK
 		/* XXX do channel-level decompression here */
 		if (PPP_PROTO(skb) == PPP_MP)
-- 
1.8.1

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