diff options
Diffstat (limited to 'Documentation/networking/xfrm_device.rst')
| -rw-r--r-- | Documentation/networking/xfrm_device.rst | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/Documentation/networking/xfrm_device.rst b/Documentation/networking/xfrm_device.rst index 66f6e9a9b59a..122204da0fff 100644 --- a/Documentation/networking/xfrm_device.rst +++ b/Documentation/networking/xfrm_device.rst @@ -65,9 +65,13 @@ Callbacks to implement /* from include/linux/netdevice.h */ struct xfrmdev_ops { /* Crypto and Packet offload callbacks */ - int (*xdo_dev_state_add) (struct xfrm_state *x, struct netlink_ext_ack *extack); - void (*xdo_dev_state_delete) (struct xfrm_state *x); - void (*xdo_dev_state_free) (struct xfrm_state *x); + int (*xdo_dev_state_add)(struct net_device *dev, + struct xfrm_state *x, + struct netlink_ext_ack *extack); + void (*xdo_dev_state_delete)(struct net_device *dev, + struct xfrm_state *x); + void (*xdo_dev_state_free)(struct net_device *dev, + struct xfrm_state *x); bool (*xdo_dev_offload_ok) (struct sk_buff *skb, struct xfrm_state *x); void (*xdo_dev_state_advance_esn) (struct xfrm_state *x); @@ -126,7 +130,8 @@ been setup for offload, it first calls into xdo_dev_offload_ok() with the skb and the intended offload state to ask the driver if the offload will serviceable. This can check the packet information to be sure the offload can be supported (e.g. IPv4 or IPv6, no IPv4 options, etc) and -return true of false to signify its support. +return true or false to signify its support. In case driver doesn't implement +this callback, the stack provides reasonable defaults. Crypto offload mode: When ready to send, the driver needs to inspect the Tx packet for the |