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crypto: algapi - create function to add request in front of queue 

Add crypto_enqueue_request_head function that enqueues a
request in front of queue.
This will be used in crypto-engine, on error path. In case a request
was not executed by hardware, enqueue it back in front of queue (to
keep the order of requests).

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Iuliana Prodan 2020-04-28 18:49:03 +03:00 committed by Herbert Xu
parent 3e37f04f2b
commit ec6e2bf33b
2 changed files with 10 additions and 0 deletions
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8
crypto/algapi.c
View File

@ -914,6 +914,14 @@ out:
} }
EXPORT_SYMBOL_GPL(crypto_enqueue_request); EXPORT_SYMBOL_GPL(crypto_enqueue_request);
void crypto_enqueue_request_head(struct crypto_queue *queue,
struct crypto_async_request *request)
{
queue->qlen++;
list_add(&request->list, &queue->list);
}
EXPORT_SYMBOL_GPL(crypto_enqueue_request_head);
struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue) struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue)
{ {
struct list_head *request; struct list_head *request;

2
include/crypto/algapi.h
View File

@ -125,6 +125,8 @@ int crypto_inst_setname(struct crypto_instance *inst, const char *name,
void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen); void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen);
int crypto_enqueue_request(struct crypto_queue *queue, int crypto_enqueue_request(struct crypto_queue *queue,
struct crypto_async_request *request); struct crypto_async_request *request);
void crypto_enqueue_request_head(struct crypto_queue *queue,
struct crypto_async_request *request);
struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue); struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue);
static inline unsigned int crypto_queue_len(struct crypto_queue *queue) static inline unsigned int crypto_queue_len(struct crypto_queue *queue)
{ {