On Thu, Oct 04, 2007 at 01:49:23PM +0800, Herbert Xu (herbert@xxxxxxxxxxxxxxxxxxx) wrote: > > What is may backlog option? I did not find it in cryptd.c, which I used > > for reference. I found a backlog variables in the driver, but without > > any signs for the outside world - queue is initialized and backlog is > > being set to that queue - since there is a dequeueing code, what is a > > purpose for backlog in that case? > > It's not directly in cryptd because it uses the helpers from > algapi.c. In particular ablkcipher_enqueue_request has the > necessary logic to handle this correctly. > > You could either use that helper yourself once your hardware > queue fills up, or implement your own backlog logic. The key > is each tfm object must be guaranteed to be able to queue at > least one request. I use ablkcipher_enqueue_request() when hardware can not handle new request, so this should be ok. -- Evgeniy Polyakov - To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
