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authorTom Herbert <therbert@google.com>2014-06-05 02:20:23 +0200
committerDavid S. Miller <davem@davemloft.net>2014-06-05 07:46:38 +0200
commit4749c09c37030ccdc44aecebe0f71b02a377fc14 (patch)
treed8bef1d48e73e2e5492765ae5348f1f0dffbad1c /net/ipv4/gre_demux.c
parentnet: Add GSO support for UDP tunnels with checksum (diff)
downloadlinux-4749c09c37030ccdc44aecebe0f71b02a377fc14.tar.xz
linux-4749c09c37030ccdc44aecebe0f71b02a377fc14.zip
gre: Call gso_make_checksum
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>
Diffstat (limited to 'net/ipv4/gre_demux.c')
-rw-r--r--net/ipv4/gre_demux.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv4/gre_demux.c b/net/ipv4/gre_demux.c
index fbfd829f4049..4e9619bca732 100644
--- a/net/ipv4/gre_demux.c
+++ b/net/ipv4/gre_demux.c
@@ -84,7 +84,8 @@ void gre_build_header(struct sk_buff *skb, const struct tnl_ptk_info *tpi,
ptr--;
}
if (tpi->flags&TUNNEL_CSUM &&
- !(skb_shinfo(skb)->gso_type & SKB_GSO_GRE)) {
+ !(skb_shinfo(skb)->gso_type &
+ (SKB_GSO_GRE|SKB_GSO_GRE_CSUM))) {
*ptr = 0;
*(__sum16 *)ptr = csum_fold(skb_checksum(skb, 0,
skb->len, 0));