netdev - [PATCH RFC 05/13] xfrm: Add callbacks for IPsec GSO offloading

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Date:	Thu, 4 Feb 2016 07:36:58 +0100
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	<netdev@...r.kernel.org>
CC:	Steffen Klassert <steffen.klassert@...unet.com>,
	<sowmini.varadhan@...cle.com>
Subject: [PATCH RFC 05/13] xfrm: Add callbacks for IPsec GSO offloading

This patch prepares struct xfrm_type for IPsec GSO offloading by
adding a encap() callback for encapsulation and a output_tail()
callback to do the crypto operations after the return from the
GSO layer. We need the output_tail() callback to handle async
crypto operations.

Signed-off-by: Steffen Klassert <steffen.klassert@...unet.com>
---
 include/net/xfrm.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index aed7153..a33ceb7 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -375,6 +375,8 @@ struct xfrm_type {
 	void			(*destructor)(struct xfrm_state *);
 	int			(*input)(struct xfrm_state *, struct sk_buff *skb);
 	int			(*output)(struct xfrm_state *, struct sk_buff *pskb);
+	int			(*output_tail)(struct xfrm_state *x, struct sk_buff *skb);
+	void			(*encap)(struct xfrm_state *x, struct sk_buff *skb);
 	int			(*reject)(struct xfrm_state *, struct sk_buff *,
 					  const struct flowi *);
 	int			(*hdr_offset)(struct xfrm_state *, struct sk_buff *, u8 **);
-- 
1.9.1