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Subject[PATCH 3.16.y-ckt 036/180] ppp: call skb_checksum_complete_unset in ppp_receive_frame
Date
3.16.7-ckt11 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tom Herbert <tom@herbertland.com>

commit 3dfb05340ec6676e6fc71a9ae87bbbe66d3c2998 upstream.

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@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Luis Henriques <luis.henriques@canonical.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 a75a411b1c27..dbf56debb7e3 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -1710,6 +1710,7 @@ 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)

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