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gre: Call gso_make_checksum

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Call gso_make_checksum. This should have the benefit of using a
checksum that may have been previously computed for the packet.

This also adds NETIF_F_GSO_GRE_CSUM to differentiate devices that
offload GRE GSO with and without the GRE checksum offloaed.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2014-06-04 17:20:23 -07:00 • committed by David S. Miller
parent 0f4f4ffa7b
commit 4749c09c37
11 changed files with 24 additions and 6 deletions
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5
include/net/gre.h
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@ -37,9 +37,10 @@ void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
int hdr_len);
static inline struct sk_buff *gre_handle_offloads(struct sk_buff *skb,
bool gre_csum)
bool csum)
{
return iptunnel_handle_offloads(skb, gre_csum, SKB_GSO_GRE);
return iptunnel_handle_offloads(skb, csum,
csum ? SKB_GSO_GRE_CSUM : SKB_GSO_GRE);
}