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-rw-r--r--Documentation/networking/xfrm_device.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/networking/xfrm_device.txt b/Documentation/networking/xfrm_device.txt
index 50c34ca65efe..267f55b5f54a 100644
--- a/Documentation/networking/xfrm_device.txt
+++ b/Documentation/networking/xfrm_device.txt
@@ -68,6 +68,10 @@ and an indication of whether it is for Rx or Tx. The driver should
- verify the algorithm is supported for offloads
- store the SA information (key, salt, target-ip, protocol, etc)
- enable the HW offload of the SA
+ - return status value:
+ 0 success
+ -EOPNETSUPP offload not supported, try SW IPsec
+ other fail the request
The driver can also set an offload_handle in the SA, an opaque void pointer
that can be used to convey context into the fast-path offload requests.