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 <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
fracktal · May 8, 2020 · ec6e2bf · ec6e2bf
1 parent 3e37f04
commit ec6e2bf
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diff --git a/crypto/algapi.c b/crypto/algapi.c
@@ -914,6 +914,14 @@ int crypto_enqueue_request(struct crypto_queue *queue,
 }
 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 list_head *request;

diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
@@ -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);
 int crypto_enqueue_request(struct crypto_queue *queue,
 			   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);
 static inline unsigned int crypto_queue_len(struct crypto_queue *queue)
 {