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| author |   Yossef Efraim <yossefe@mellanox.com> | 2018-01-14 11:39:10 +0200 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2018-01-18 10:42:59 +0100 |
| commit | 50bd870a9e5cca9fcf5fb4c130c373643d7d9906 (patch) | |
| tree | e8195f25d0eab9eb269d97e360c573430c5af829 /Documentation/networking/xfrm_device.txt | |
| parent | Merge tag 'linux-can-next-for-4.16-20180116' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next (diff) | |
| download | linux-dev-50bd870a9e5cca9fcf5fb4c130c373643d7d9906.tar.xz linux-dev-50bd870a9e5cca9fcf5fb4c130c373643d7d9906.zip | |
xfrm: Add ESN support for IPSec HW offload
This patch adds ESN support to IPsec device offload.
Adding new xfrm device operation to synchronize device ESN.
Signed-off-by: Yossef Efraim <yossefe@mellanox.com>
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'Documentation/networking/xfrm_device.txt')
| -rw-r--r-- | Documentation/networking/xfrm_device.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/networking/xfrm_device.txt b/Documentation/networking/xfrm_device.txt index 2d9d588cd34b..50c34ca65efe 100644 --- a/Documentation/networking/xfrm_device.txt +++ b/Documentation/networking/xfrm_device.txt @@ -41,6 +41,7 @@ struct xfrmdev_ops { void (*xdo_dev_state_free) (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); }; The NIC driver offering ipsec offload will need to implement these @@ -117,6 +118,8 @@ the stack in xfrm_input(). hand the packet to napi_gro_receive() as usual +In ESN mode, xdo_dev_state_advance_esn() is called from xfrm_replay_advance_esn(). +Driver will check packet seq number and update HW ESN state machine if needed. When the SA is removed by the user, the driver's xdo_dev_state_delete() is asked to disable the offload. Later, xdo_dev_state_free() is called |