Re: [PATCH v3 07/15] dmaengine: idxd: add callback support for iaa crypto

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 4/28/23 13:55, Tom Zanussi wrote:
Create a lightweight callback interface to allow idxd sub-drivers to
be notified when work sent to idxd wqs has completed.

For a sub-driver to be notified of work completion, it needs to:

   - Set the descriptor's 'Request Completion Interrupt'
     (IDXD_OP_FLAG_RCI)

   - Set the sub-driver desc_complete() callback when registering the
     sub-driver e.g.:

       struct idxd_device_driver my_drv = {
             .probe = my_probe,
             .desc_complete = my_complete,
       }

   - Set the sub-driver-specific context in the sub-driver's descriptor
     e.g:

       idxd_desc->crypto.req = req;
       idxd_desc->crypto.tfm = tfm;
       idxd_desc->crypto.src_addr = src_addr;
       idxd_desc->crypto.dst_addr = dst_addr;

When the work completes and the completion irq fires, idxd will invoke
the desc_complete() callback with pointers to the descriptor, context,
and completion_type.

Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
Signed-off-by: Tom Zanussi <tom.zanussi@xxxxxxxxxxxxxxx>

Reviewed-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>

Thanks.

-Fenghua



[Index of Archives]     [Kernel]     [Gnu Classpath]     [Gnu Crypto]     [DM Crypt]     [Netfilter]     [Bugtraq]
  Powered by Linux