diff options
Diffstat (limited to 'crypto/crypto_engine.c')
| -rw-r--r-- | crypto/crypto_engine.c | 27 |
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); |