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xfrm: Add an IPsec hardware offloading API

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This patch adds all the bits that are needed to do
IPsec hardware offload for IPsec states and ESP packets.
We add xfrmdev_ops to the net_device. xfrmdev_ops has
function pointers that are needed to manage the xfrm
states in the hardware and to do a per packet
offloading decision.

Joint work with:
Ilan Tayari <ilant@mellanox.com>
Guy Shapiro <guysh@mellanox.com>
Yossi Kuperman <yossiku@mellanox.com>

Signed-off-by: Guy Shapiro <guysh@mellanox.com>
Signed-off-by: Ilan Tayari <ilant@mellanox.com>
Signed-off-by: Yossi Kuperman <yossiku@mellanox.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Steffen Klassert
2017-04-14 10:06:10 +02:00
parent c35fe4106b
commit d77e38e612
14 changed files with 424 additions and 24 deletions
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14
include/linux/netdevice.h
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@@ -824,6 +824,16 @@ struct netdev_xdp {
};
};
#ifdef CONFIG_XFRM_OFFLOAD
struct xfrmdev_ops {
int (*xdo_dev_state_add) (struct xfrm_state *x);
void (*xdo_dev_state_delete) (struct xfrm_state *x);
void (*xdo_dev_state_free) (struct xfrm_state *x);
bool (*xdo_dev_offload_ok) (struct sk_buff *skb,
struct xfrm_state *x);
};
#endif
/*
* This structure defines the management hooks for network devices.
* The following hooks can be defined; unless noted otherwise, they are
@@ -1697,6 +1707,10 @@ struct net_device {
const struct ndisc_ops *ndisc_ops;
#endif
#ifdef CONFIG_XFRM
const struct xfrmdev_ops *xfrmdev_ops;
#endif
const struct header_ops *header_ops;
unsigned int flags;