net/xfrm: Add inner_ipproto into sec_path
The inner_ipproto saves the inner IP protocol of the plain
text packet. This allows vendor's IPsec feature making offload
decision at skb's features_check and configuring hardware at
ndo_start_xmit.
For example, ConnectX6-DX IPsec device needs the plaintext's
IP protocol to support partial checksum offload on
VXLAN/GENEVE packet over IPsec transport mode tunnel.
Signed-off-by: Raed Salem <raeds@nvidia.com>
Signed-off-by: Huy Nguyen <huyn@nvidia.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index c58a6d4..1d803e8 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1024,6 +1024,7 @@ struct xfrm_offload {
#define CRYPTO_INVALID_PROTOCOL 128
__u8 proto;
+ __u8 inner_ipproto;
};
struct sec_path {