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gre: When GRE csum is present count as encap layer wrt csum

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In GRE demux if the GRE checksum pop rcv encapsulation so that any
encapsulated checksums are treated as tunnel checksums.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2014-08-22 13:34:52 -07:00 committed by David S. Miller
parent 57c67ff4bd
commit 48a5fc7731
1 changed files with 1 additions and 0 deletions
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net/ipv4/gre_demux.c
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@ -125,6 +125,7 @@ static int parse_gre_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
*csum_err = true;
return -EINVAL;
}
skb_pop_rcv_encapsulation(skb);
options++;
}