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Diffstat (limited to 'crypto')
-rw-r--r--crypto/crypto_engine.c27
1 files changed, 26 insertions, 1 deletions
diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
index ee192731a997..412149e8e3dc 100644
--- a/crypto/crypto_engine.c
+++ b/crypto/crypto_engine.c
@@ -227,6 +227,18 @@ retry:
out:
spin_unlock_irqrestore(&engine->queue_lock, flags);
+
+ /*
+ * Batch requests is possible only if
+ * hardware can enqueue multiple requests
+ */
+ if (engine->do_batch_requests) {
+ ret = engine->do_batch_requests(engine);
+ if (ret)
+ dev_err(engine->dev, "failed to do batch requests: %d\n",
+ ret);
+ }
+
return;
}
@@ -456,6 +468,12 @@ EXPORT_SYMBOL_GPL(crypto_engine_stop);
* crypto-engine queue.
* @dev: the device attached with one hardware engine
* @retry_support: whether hardware has support for retry mechanism
+ * @cbk_do_batch: pointer to a callback function to be invoked when executing a
+ * a batch of requests.
+ * This has the form:
+ * callback(struct crypto_engine *engine)
+ * where:
+ * @engine: the crypto engine structure.
* @rt: whether this queue is set to run as a realtime task
* @qlen: maximum size of the crypto-engine queue
*
@@ -464,6 +482,7 @@ EXPORT_SYMBOL_GPL(crypto_engine_stop);
*/
struct crypto_engine *crypto_engine_alloc_init_and_set(struct device *dev,
bool retry_support,
+ int (*cbk_do_batch)(struct crypto_engine *engine),
bool rt, int qlen)
{
struct sched_param param = { .sched_priority = MAX_RT_PRIO / 2 };
@@ -483,6 +502,12 @@ struct crypto_engine *crypto_engine_alloc_init_and_set(struct device *dev,
engine->idling = false;
engine->retry_support = retry_support;
engine->priv_data = dev;
+ /*
+ * Batch requests is possible only if
+ * hardware has support for retry mechanism.
+ */
+ engine->do_batch_requests = retry_support ? cbk_do_batch : NULL;
+
snprintf(engine->name, sizeof(engine->name),
"%s-engine", dev_name(dev));
@@ -516,7 +541,7 @@ EXPORT_SYMBOL_GPL(crypto_engine_alloc_init_and_set);
*/
struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt)
{
- return crypto_engine_alloc_init_and_set(dev, false, rt,
+ return crypto_engine_alloc_init_and_set(dev, false, NULL, rt,
CRYPTO_ENGINE_MAX_QLEN);
}
EXPORT_SYMBOL_GPL(crypto_engine_alloc_init);