diff options
-rw-r--r-- | crypto/crypto_engine.c | 186 | ||||
-rw-r--r-- | drivers/crypto/omap-aes.c | 8 | ||||
-rw-r--r-- | drivers/crypto/omap-des.c | 8 | ||||
-rw-r--r-- | include/crypto/engine.h | 49 |
4 files changed, 189 insertions, 62 deletions
diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c index 795b6f9412ba..bfb92ace2c91 100644 --- a/crypto/crypto_engine.c +++ b/crypto/crypto_engine.c @@ -15,13 +15,11 @@ #include <linux/err.h> #include <linux/delay.h> #include <crypto/engine.h> +#include <crypto/internal/hash.h> #include "internal.h" #define CRYPTO_ENGINE_MAX_QLEN 10 -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err); - /** * crypto_pump_requests - dequeue one request from engine queue to process * @engine: the hardware engine @@ -35,10 +33,11 @@ static void crypto_pump_requests(struct crypto_engine *engine, bool in_kthread) { struct crypto_async_request *async_req, *backlog; - struct ablkcipher_request *req; + struct ahash_request *hreq; + struct ablkcipher_request *breq; unsigned long flags; bool was_busy = false; - int ret; + int ret, rtype; spin_lock_irqsave(&engine->queue_lock, flags); @@ -83,9 +82,7 @@ static void crypto_pump_requests(struct crypto_engine *engine, if (!async_req) goto out; - req = ablkcipher_request_cast(async_req); - - engine->cur_req = req; + engine->cur_req = async_req; if (backlog) backlog->complete(backlog, -EINPROGRESS); @@ -96,6 +93,7 @@ static void crypto_pump_requests(struct crypto_engine *engine, spin_unlock_irqrestore(&engine->queue_lock, flags); + rtype = crypto_tfm_alg_type(engine->cur_req->tfm); /* Until here we get the request need to be encrypted successfully */ if (!was_busy && engine->prepare_crypt_hardware) { ret = engine->prepare_crypt_hardware(engine); @@ -105,24 +103,55 @@ static void crypto_pump_requests(struct crypto_engine *engine, } } - if (engine->prepare_request) { - ret = engine->prepare_request(engine, engine->cur_req); + switch (rtype) { + case CRYPTO_ALG_TYPE_AHASH: + hreq = ahash_request_cast(engine->cur_req); + if (engine->prepare_hash_request) { + ret = engine->prepare_hash_request(engine, hreq); + if (ret) { + pr_err("failed to prepare request: %d\n", ret); + goto req_err; + } + engine->cur_req_prepared = true; + } + ret = engine->hash_one_request(engine, hreq); if (ret) { - pr_err("failed to prepare request: %d\n", ret); + pr_err("failed to hash one request from queue\n"); goto req_err; } - engine->cur_req_prepared = true; - } - - ret = engine->crypt_one_request(engine, engine->cur_req); - if (ret) { - pr_err("failed to crypt one request from queue\n"); - goto req_err; + return; + case CRYPTO_ALG_TYPE_ABLKCIPHER: + breq = ablkcipher_request_cast(engine->cur_req); + if (engine->prepare_cipher_request) { + ret = engine->prepare_cipher_request(engine, breq); + if (ret) { + pr_err("failed to prepare request: %d\n", ret); + goto req_err; + } + engine->cur_req_prepared = true; + } + ret = engine->cipher_one_request(engine, breq); + if (ret) { + pr_err("failed to cipher one request from queue\n"); + goto req_err; + } + return; + default: + pr_err("failed to prepare request of unknown type\n"); + return; } - return; req_err: - crypto_finalize_request(engine, engine->cur_req, ret); + switch (rtype) { + case CRYPTO_ALG_TYPE_AHASH: + hreq = ahash_request_cast(engine->cur_req); + crypto_finalize_hash_request(engine, hreq, ret); + break; + case CRYPTO_ALG_TYPE_ABLKCIPHER: + breq = ablkcipher_request_cast(engine->cur_req); + crypto_finalize_cipher_request(engine, breq, ret); + break; + } return; out: @@ -138,12 +167,14 @@ static void crypto_pump_work(struct kthread_work *work) } /** - * crypto_transfer_request - transfer the new request into the engine queue + * crypto_transfer_cipher_request - transfer the new request into the + * enginequeue * @engine: the hardware engine * @req: the request need to be listed into the engine queue */ -int crypto_transfer_request(struct crypto_engine *engine, - struct ablkcipher_request *req, bool need_pump) +int crypto_transfer_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, + bool need_pump) { unsigned long flags; int ret; @@ -163,46 +194,125 @@ int crypto_transfer_request(struct crypto_engine *engine, spin_unlock_irqrestore(&engine->queue_lock, flags); return ret; } -EXPORT_SYMBOL_GPL(crypto_transfer_request); +EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request); + +/** + * crypto_transfer_cipher_request_to_engine - transfer one request to list + * into the engine queue + * @engine: the hardware engine + * @req: the request need to be listed into the engine queue + */ +int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine, + struct ablkcipher_request *req) +{ + return crypto_transfer_cipher_request(engine, req, true); +} +EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request_to_engine); + +/** + * crypto_transfer_hash_request - transfer the new request into the + * enginequeue + * @engine: the hardware engine + * @req: the request need to be listed into the engine queue + */ +int crypto_transfer_hash_request(struct crypto_engine *engine, + struct ahash_request *req, bool need_pump) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&engine->queue_lock, flags); + + if (!engine->running) { + spin_unlock_irqrestore(&engine->queue_lock, flags); + return -ESHUTDOWN; + } + + ret = ahash_enqueue_request(&engine->queue, req); + + if (!engine->busy && need_pump) + queue_kthread_work(&engine->kworker, &engine->pump_requests); + + spin_unlock_irqrestore(&engine->queue_lock, flags); + return ret; +} +EXPORT_SYMBOL_GPL(crypto_transfer_hash_request); /** - * crypto_transfer_request_to_engine - transfer one request to list into the - * engine queue + * crypto_transfer_hash_request_to_engine - transfer one request to list + * into the engine queue * @engine: the hardware engine * @req: the request need to be listed into the engine queue */ -int crypto_transfer_request_to_engine(struct crypto_engine *engine, - struct ablkcipher_request *req) +int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine, + struct ahash_request *req) { - return crypto_transfer_request(engine, req, true); + return crypto_transfer_hash_request(engine, req, true); } -EXPORT_SYMBOL_GPL(crypto_transfer_request_to_engine); +EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine); /** - * crypto_finalize_request - finalize one request if the request is done + * crypto_finalize_cipher_request - finalize one request if the request is done * @engine: the hardware engine * @req: the request need to be finalized * @err: error number */ -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err) +void crypto_finalize_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, int err) { unsigned long flags; bool finalize_cur_req = false; int ret; spin_lock_irqsave(&engine->queue_lock, flags); - if (engine->cur_req == req) + if (engine->cur_req == &req->base) finalize_cur_req = true; spin_unlock_irqrestore(&engine->queue_lock, flags); if (finalize_cur_req) { - if (engine->cur_req_prepared && engine->unprepare_request) { - ret = engine->unprepare_request(engine, req); + if (engine->cur_req_prepared && + engine->unprepare_cipher_request) { + ret = engine->unprepare_cipher_request(engine, req); if (ret) pr_err("failed to unprepare request\n"); } + spin_lock_irqsave(&engine->queue_lock, flags); + engine->cur_req = NULL; + engine->cur_req_prepared = false; + spin_unlock_irqrestore(&engine->queue_lock, flags); + } + + req->base.complete(&req->base, err); + queue_kthread_work(&engine->kworker, &engine->pump_requests); +} +EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request); + +/** + * crypto_finalize_hash_request - finalize one request if the request is done + * @engine: the hardware engine + * @req: the request need to be finalized + * @err: error number + */ +void crypto_finalize_hash_request(struct crypto_engine *engine, + struct ahash_request *req, int err) +{ + unsigned long flags; + bool finalize_cur_req = false; + int ret; + + spin_lock_irqsave(&engine->queue_lock, flags); + if (engine->cur_req == &req->base) + finalize_cur_req = true; + spin_unlock_irqrestore(&engine->queue_lock, flags); + + if (finalize_cur_req) { + if (engine->cur_req_prepared && + engine->unprepare_hash_request) { + ret = engine->unprepare_hash_request(engine, req); + if (ret) + pr_err("failed to unprepare request\n"); + } spin_lock_irqsave(&engine->queue_lock, flags); engine->cur_req = NULL; engine->cur_req_prepared = false; @@ -213,7 +323,7 @@ void crypto_finalize_request(struct crypto_engine *engine, queue_kthread_work(&engine->kworker, &engine->pump_requests); } -EXPORT_SYMBOL_GPL(crypto_finalize_request); +EXPORT_SYMBOL_GPL(crypto_finalize_hash_request); /** * crypto_engine_start - start the hardware engine @@ -250,7 +360,7 @@ EXPORT_SYMBOL_GPL(crypto_engine_start); int crypto_engine_stop(struct crypto_engine *engine) { unsigned long flags; - unsigned limit = 500; + unsigned int limit = 500; int ret = 0; spin_lock_irqsave(&engine->queue_lock, flags); diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c index 993e08ecd16f..3483ab66b1ca 100644 --- a/drivers/crypto/omap-aes.c +++ b/drivers/crypto/omap-aes.c @@ -520,7 +520,7 @@ static void omap_aes_finish_req(struct omap_aes_dev *dd, int err) pr_debug("err: %d\n", err); - crypto_finalize_request(dd->engine, req, err); + crypto_finalize_cipher_request(dd->engine, req, err); } static int omap_aes_crypt_dma_stop(struct omap_aes_dev *dd) @@ -593,7 +593,7 @@ static int omap_aes_handle_queue(struct omap_aes_dev *dd, struct ablkcipher_request *req) { if (req) - return crypto_transfer_request_to_engine(dd->engine, req); + return crypto_transfer_cipher_request_to_engine(dd->engine, req); return 0; } @@ -1209,8 +1209,8 @@ static int omap_aes_probe(struct platform_device *pdev) if (!dd->engine) goto err_algs; - dd->engine->prepare_request = omap_aes_prepare_req; - dd->engine->crypt_one_request = omap_aes_crypt_req; + dd->engine->prepare_cipher_request = omap_aes_prepare_req; + dd->engine->cipher_one_request = omap_aes_crypt_req; err = crypto_engine_start(dd->engine); if (err) goto err_engine; diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index dc36e1c96eba..c0a28b1c66e4 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -507,7 +507,7 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int err) pr_debug("err: %d\n", err); pm_runtime_put(dd->dev); - crypto_finalize_request(dd->engine, req, err); + crypto_finalize_cipher_request(dd->engine, req, err); } static int omap_des_crypt_dma_stop(struct omap_des_dev *dd) @@ -575,7 +575,7 @@ static int omap_des_handle_queue(struct omap_des_dev *dd, struct ablkcipher_request *req) { if (req) - return crypto_transfer_request_to_engine(dd->engine, req); + return crypto_transfer_cipher_request_to_engine(dd->engine, req); return 0; } @@ -1099,8 +1099,8 @@ static int omap_des_probe(struct platform_device *pdev) if (!dd->engine) goto err_algs; - dd->engine->prepare_request = omap_des_prepare_req; - dd->engine->crypt_one_request = omap_des_crypt_req; + dd->engine->prepare_cipher_request = omap_des_prepare_req; + dd->engine->cipher_one_request = omap_des_crypt_req; err = crypto_engine_start(dd->engine); if (err) goto err_engine; diff --git a/include/crypto/engine.h b/include/crypto/engine.h index 40899bd246ec..04eb5c77addd 100644 --- a/include/crypto/engine.h +++ b/include/crypto/engine.h @@ -17,6 +17,7 @@ #include <linux/kernel.h> #include <linux/kthread.h> #include <crypto/algapi.h> +#include <crypto/hash.h> #define ENGINE_NAME_LEN 30 /* @@ -36,9 +37,12 @@ * @unprepare_crypt_hardware: there are currently no more requests on the * queue so the subsystem notifies the driver that it may relax the * hardware by issuing this call - * @prepare_request: do some prepare if need before handle the current request - * @unprepare_request: undo any work done by prepare_message() - * @crypt_one_request: do encryption for current request + * @prepare_cipher_request: do some prepare if need before handle the current request + * @unprepare_cipher_request: undo any work done by prepare_cipher_request() + * @cipher_one_request: do encryption for current request + * @prepare_hash_request: do some prepare if need before handle the current request + * @unprepare_hash_request: undo any work done by prepare_hash_request() + * @hash_one_request: do hash for current request * @kworker: thread struct for request pump * @kworker_task: pointer to task for request pump kworker thread * @pump_requests: work struct for scheduling work to the request pump @@ -61,27 +65,40 @@ struct crypto_engine { int (*prepare_crypt_hardware)(struct crypto_engine *engine); int (*unprepare_crypt_hardware)(struct crypto_engine *engine); - int (*prepare_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - int (*unprepare_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); - int (*crypt_one_request)(struct crypto_engine *engine, - struct ablkcipher_request *req); + int (*prepare_cipher_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*unprepare_cipher_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*prepare_hash_request)(struct crypto_engine *engine, + struct ahash_request *req); + int (*unprepare_hash_request)(struct crypto_engine *engine, + struct ahash_request *req); + int (*cipher_one_request)(struct crypto_engine *engine, + struct ablkcipher_request *req); + int (*hash_one_request)(struct crypto_engine *engine, + struct ahash_request *req); struct kthread_worker kworker; struct task_struct *kworker_task; struct kthread_work pump_requests; void *priv_data; - struct ablkcipher_request *cur_req; + struct crypto_async_request *cur_req; }; -int crypto_transfer_request(struct crypto_engine *engine, - struct ablkcipher_request *req, bool need_pump); -int crypto_transfer_request_to_engine(struct crypto_engine *engine, - struct ablkcipher_request *req); -void crypto_finalize_request(struct crypto_engine *engine, - struct ablkcipher_request *req, int err); +int crypto_transfer_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, + bool need_pump); +int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine, + struct ablkcipher_request *req); +int crypto_transfer_hash_request(struct crypto_engine *engine, + struct ahash_request *req, bool need_pump); +int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine, + struct ahash_request *req); +void crypto_finalize_cipher_request(struct crypto_engine *engine, + struct ablkcipher_request *req, int err); +void crypto_finalize_hash_request(struct crypto_engine *engine, + struct ahash_request *req, int err); int crypto_engine_start(struct crypto_engine *engine); int crypto_engine_stop(struct crypto_engine *engine); struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt); |