mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-29 09:16:33 +00:00
crypto: engine - Permit to enqueue all async requests
The crypto engine could actually only enqueue hash and ablkcipher request. This patch permit it to enqueue any type of crypto_async_request. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Tested-by: Fabien Dessenne <fabien.dessenne@st.com> Tested-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Corentin LABBE
Herbert Xu
parent
ce09a6c042
commit
218d1cc186
@ -15,12 +15,49 @@
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#include <linux/err.h>
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#include <linux/delay.h>
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#include <crypto/engine.h>
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#include <crypto/internal/hash.h>
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#include <uapi/linux/sched/types.h>
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#include "internal.h"
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#define CRYPTO_ENGINE_MAX_QLEN 10
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/**
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* crypto_finalize_request - finalize one request if the request is done
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* @engine: the hardware engine
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* @req: the request need to be finalized
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* @err: error number
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*/
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static void crypto_finalize_request(struct crypto_engine *engine,
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struct crypto_async_request *req, int err)
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{
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unsigned long flags;
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bool finalize_cur_req = false;
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int ret;
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struct crypto_engine_ctx *enginectx;
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spin_lock_irqsave(&engine->queue_lock, flags);
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if (engine->cur_req == req)
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finalize_cur_req = true;
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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if (finalize_cur_req) {
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enginectx = crypto_tfm_ctx(req->tfm);
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if (engine->cur_req_prepared &&
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enginectx->op.unprepare_request) {
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ret = enginectx->op.unprepare_request(engine, req);
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if (ret)
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dev_err(engine->dev, "failed to unprepare request\n");
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}
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spin_lock_irqsave(&engine->queue_lock, flags);
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engine->cur_req = NULL;
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engine->cur_req_prepared = false;
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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}
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req->complete(req, err);
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kthread_queue_work(engine->kworker, &engine->pump_requests);
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}
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/**
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* crypto_pump_requests - dequeue one request from engine queue to process
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* @engine: the hardware engine
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@ -34,11 +71,10 @@ static void crypto_pump_requests(struct crypto_engine *engine,
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bool in_kthread)
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{
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struct crypto_async_request *async_req, *backlog;
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struct ahash_request *hreq;
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struct ablkcipher_request *breq;
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unsigned long flags;
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bool was_busy = false;
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int ret, rtype;
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int ret;
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struct crypto_engine_ctx *enginectx;
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spin_lock_irqsave(&engine->queue_lock, flags);
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@ -94,7 +130,6 @@ static void crypto_pump_requests(struct crypto_engine *engine,
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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rtype = crypto_tfm_alg_type(engine->cur_req->tfm);
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/* Until here we get the request need to be encrypted successfully */
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if (!was_busy && engine->prepare_crypt_hardware) {
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ret = engine->prepare_crypt_hardware(engine);
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@ -104,57 +139,31 @@ static void crypto_pump_requests(struct crypto_engine *engine,
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}
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}
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switch (rtype) {
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case CRYPTO_ALG_TYPE_AHASH:
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hreq = ahash_request_cast(engine->cur_req);
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if (engine->prepare_hash_request) {
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ret = engine->prepare_hash_request(engine, hreq);
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if (ret) {
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dev_err(engine->dev, "failed to prepare request: %d\n",
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ret);
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goto req_err;
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}
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engine->cur_req_prepared = true;
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}
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ret = engine->hash_one_request(engine, hreq);
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enginectx = crypto_tfm_ctx(async_req->tfm);
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if (enginectx->op.prepare_request) {
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ret = enginectx->op.prepare_request(engine, async_req);
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if (ret) {
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dev_err(engine->dev, "failed to hash one request from queue\n");
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dev_err(engine->dev, "failed to prepare request: %d\n",
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ret);
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goto req_err;
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}
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return;
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case CRYPTO_ALG_TYPE_ABLKCIPHER:
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breq = ablkcipher_request_cast(engine->cur_req);
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if (engine->prepare_cipher_request) {
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ret = engine->prepare_cipher_request(engine, breq);
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if (ret) {
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dev_err(engine->dev, "failed to prepare request: %d\n",
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ret);
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goto req_err;
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}
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engine->cur_req_prepared = true;
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}
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ret = engine->cipher_one_request(engine, breq);
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if (ret) {
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dev_err(engine->dev, "failed to cipher one request from queue\n");
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goto req_err;
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}
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return;
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default:
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dev_err(engine->dev, "failed to prepare request of unknown type\n");
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return;
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engine->cur_req_prepared = true;
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}
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if (!enginectx->op.do_one_request) {
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dev_err(engine->dev, "failed to do request\n");
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ret = -EINVAL;
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goto req_err;
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}
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ret = enginectx->op.do_one_request(engine, async_req);
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if (ret) {
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dev_err(engine->dev, "Failed to do one request from queue: %d\n", ret);
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goto req_err;
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}
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return;
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req_err:
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switch (rtype) {
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case CRYPTO_ALG_TYPE_AHASH:
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hreq = ahash_request_cast(engine->cur_req);
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crypto_finalize_hash_request(engine, hreq, ret);
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break;
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case CRYPTO_ALG_TYPE_ABLKCIPHER:
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breq = ablkcipher_request_cast(engine->cur_req);
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crypto_finalize_cipher_request(engine, breq, ret);
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break;
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}
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crypto_finalize_request(engine, async_req, ret);
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return;
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out:
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@ -170,13 +179,12 @@ static void crypto_pump_work(struct kthread_work *work)
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}
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/**
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* crypto_transfer_cipher_request - transfer the new request into the
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* enginequeue
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* crypto_transfer_request - transfer the new request into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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*/
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int crypto_transfer_cipher_request(struct crypto_engine *engine,
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struct ablkcipher_request *req,
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static int crypto_transfer_request(struct crypto_engine *engine,
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struct crypto_async_request *req,
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bool need_pump)
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{
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unsigned long flags;
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@ -189,7 +197,7 @@ int crypto_transfer_cipher_request(struct crypto_engine *engine,
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return -ESHUTDOWN;
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}
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ret = ablkcipher_enqueue_request(&engine->queue, req);
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ret = crypto_enqueue_request(&engine->queue, req);
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if (!engine->busy && need_pump)
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kthread_queue_work(engine->kworker, &engine->pump_requests);
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@ -197,102 +205,131 @@ int crypto_transfer_cipher_request(struct crypto_engine *engine,
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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return ret;
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request);
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/**
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* crypto_transfer_cipher_request_to_engine - transfer one request to list
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* crypto_transfer_request_to_engine - transfer one request to list
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* into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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*/
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int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine,
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struct ablkcipher_request *req)
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static int crypto_transfer_request_to_engine(struct crypto_engine *engine,
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struct crypto_async_request *req)
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{
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return crypto_transfer_cipher_request(engine, req, true);
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return crypto_transfer_request(engine, req, true);
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request_to_engine);
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/**
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* crypto_transfer_hash_request - transfer the new request into the
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* enginequeue
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* crypto_transfer_ablkcipher_request_to_engine - transfer one ablkcipher_request
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* to list into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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* TODO: Remove this function when skcipher conversion is finished
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*/
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int crypto_transfer_ablkcipher_request_to_engine(struct crypto_engine *engine,
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struct ablkcipher_request *req)
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{
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return crypto_transfer_request_to_engine(engine, &req->base);
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_ablkcipher_request_to_engine);
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/**
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* crypto_transfer_aead_request_to_engine - transfer one aead_request
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* to list into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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*/
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int crypto_transfer_hash_request(struct crypto_engine *engine,
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struct ahash_request *req, bool need_pump)
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int crypto_transfer_aead_request_to_engine(struct crypto_engine *engine,
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struct aead_request *req)
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{
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&engine->queue_lock, flags);
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if (!engine->running) {
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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return -ESHUTDOWN;
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}
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ret = ahash_enqueue_request(&engine->queue, req);
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if (!engine->busy && need_pump)
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kthread_queue_work(engine->kworker, &engine->pump_requests);
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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return ret;
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return crypto_transfer_request_to_engine(engine, &req->base);
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_hash_request);
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EXPORT_SYMBOL_GPL(crypto_transfer_aead_request_to_engine);
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/**
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* crypto_transfer_hash_request_to_engine - transfer one request to list
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* into the engine queue
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* crypto_transfer_akcipher_request_to_engine - transfer one akcipher_request
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* to list into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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*/
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int crypto_transfer_akcipher_request_to_engine(struct crypto_engine *engine,
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struct akcipher_request *req)
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{
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return crypto_transfer_request_to_engine(engine, &req->base);
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_akcipher_request_to_engine);
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/**
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* crypto_transfer_hash_request_to_engine - transfer one ahash_request
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* to list into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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*/
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int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
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struct ahash_request *req)
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{
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return crypto_transfer_hash_request(engine, req, true);
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return crypto_transfer_request_to_engine(engine, &req->base);
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine);
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/**
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* crypto_finalize_cipher_request - finalize one request if the request is done
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* crypto_transfer_skcipher_request_to_engine - transfer one skcipher_request
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* to list into the engine queue
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* @engine: the hardware engine
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* @req: the request need to be listed into the engine queue
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*/
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int crypto_transfer_skcipher_request_to_engine(struct crypto_engine *engine,
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struct skcipher_request *req)
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{
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return crypto_transfer_request_to_engine(engine, &req->base);
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}
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EXPORT_SYMBOL_GPL(crypto_transfer_skcipher_request_to_engine);
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/**
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* crypto_finalize_ablkcipher_request - finalize one ablkcipher_request if
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* the request is done
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* @engine: the hardware engine
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* @req: the request need to be finalized
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* @err: error number
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* TODO: Remove this function when skcipher conversion is finished
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*/
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void crypto_finalize_ablkcipher_request(struct crypto_engine *engine,
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struct ablkcipher_request *req, int err)
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{
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return crypto_finalize_request(engine, &req->base, err);
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}
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EXPORT_SYMBOL_GPL(crypto_finalize_ablkcipher_request);
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/**
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* crypto_finalize_aead_request - finalize one aead_request if
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* the request is done
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* @engine: the hardware engine
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* @req: the request need to be finalized
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* @err: error number
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*/
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void crypto_finalize_cipher_request(struct crypto_engine *engine,
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struct ablkcipher_request *req, int err)
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void crypto_finalize_aead_request(struct crypto_engine *engine,
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struct aead_request *req, int err)
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{
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unsigned long flags;
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bool finalize_cur_req = false;
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int ret;
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spin_lock_irqsave(&engine->queue_lock, flags);
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if (engine->cur_req == &req->base)
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finalize_cur_req = true;
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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if (finalize_cur_req) {
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if (engine->cur_req_prepared &&
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engine->unprepare_cipher_request) {
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ret = engine->unprepare_cipher_request(engine, req);
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if (ret)
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dev_err(engine->dev, "failed to unprepare request\n");
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}
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spin_lock_irqsave(&engine->queue_lock, flags);
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engine->cur_req = NULL;
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engine->cur_req_prepared = false;
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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}
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req->base.complete(&req->base, err);
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kthread_queue_work(engine->kworker, &engine->pump_requests);
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return crypto_finalize_request(engine, &req->base, err);
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}
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EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request);
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EXPORT_SYMBOL_GPL(crypto_finalize_aead_request);
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/**
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* crypto_finalize_hash_request - finalize one request if the request is done
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* crypto_finalize_akcipher_request - finalize one akcipher_request if
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* the request is done
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* @engine: the hardware engine
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* @req: the request need to be finalized
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* @err: error number
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*/
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void crypto_finalize_akcipher_request(struct crypto_engine *engine,
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struct akcipher_request *req, int err)
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{
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return crypto_finalize_request(engine, &req->base, err);
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}
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EXPORT_SYMBOL_GPL(crypto_finalize_akcipher_request);
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/**
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* crypto_finalize_hash_request - finalize one ahash_request if
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* the request is done
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* @engine: the hardware engine
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* @req: the request need to be finalized
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* @err: error number
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@ -300,34 +337,24 @@ EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request);
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void crypto_finalize_hash_request(struct crypto_engine *engine,
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struct ahash_request *req, int err)
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{
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unsigned long flags;
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bool finalize_cur_req = false;
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int ret;
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spin_lock_irqsave(&engine->queue_lock, flags);
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if (engine->cur_req == &req->base)
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finalize_cur_req = true;
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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if (finalize_cur_req) {
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if (engine->cur_req_prepared &&
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engine->unprepare_hash_request) {
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ret = engine->unprepare_hash_request(engine, req);
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if (ret)
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dev_err(engine->dev, "failed to unprepare request\n");
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}
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spin_lock_irqsave(&engine->queue_lock, flags);
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engine->cur_req = NULL;
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engine->cur_req_prepared = false;
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spin_unlock_irqrestore(&engine->queue_lock, flags);
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}
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req->base.complete(&req->base, err);
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kthread_queue_work(engine->kworker, &engine->pump_requests);
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return crypto_finalize_request(engine, &req->base, err);
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}
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EXPORT_SYMBOL_GPL(crypto_finalize_hash_request);
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/**
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* crypto_finalize_skcipher_request - finalize one skcipher_request if
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* the request is done
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* @engine: the hardware engine
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* @req: the request need to be finalized
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* @err: error number
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*/
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void crypto_finalize_skcipher_request(struct crypto_engine *engine,
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struct skcipher_request *req, int err)
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{
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return crypto_finalize_request(engine, &req->base, err);
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}
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EXPORT_SYMBOL_GPL(crypto_finalize_skcipher_request);
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/**
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* crypto_engine_start - start the hardware engine
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* @engine: the hardware engine need to be started
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@ -17,7 +17,10 @@
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#include <linux/kernel.h>
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#include <linux/kthread.h>
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#include <crypto/algapi.h>
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#include <crypto/aead.h>
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#include <crypto/akcipher.h>
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#include <crypto/hash.h>
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#include <crypto/skcipher.h>
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#define ENGINE_NAME_LEN 30
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/*
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@ -37,12 +40,6 @@
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* @unprepare_crypt_hardware: there are currently no more requests on the
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* queue so the subsystem notifies the driver that it may relax the
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* hardware by issuing this call
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* @prepare_cipher_request: do some prepare if need before handle the current request
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* @unprepare_cipher_request: undo any work done by prepare_cipher_request()
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* @cipher_one_request: do encryption for current request
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* @prepare_hash_request: do some prepare if need before handle the current request
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* @unprepare_hash_request: undo any work done by prepare_hash_request()
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* @hash_one_request: do hash for current request
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* @kworker: kthread worker struct for request pump
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* @pump_requests: work struct for scheduling work to the request pump
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* @priv_data: the engine private data
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@ -65,19 +62,6 @@ struct crypto_engine {
|
||||
int (*prepare_crypt_hardware)(struct crypto_engine *engine);
|
||||
int (*unprepare_crypt_hardware)(struct crypto_engine *engine);
|
||||
|
||||
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 kthread_work pump_requests;
|
||||
|
||||
@ -85,19 +69,45 @@ struct crypto_engine {
|
||||
struct crypto_async_request *cur_req;
|
||||
};
|
||||
|
||||
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);
|
||||
/*
|
||||
* struct crypto_engine_op - crypto hardware engine operations
|
||||
* @prepare__request: do some prepare if need before handle the current request
|
||||
* @unprepare_request: undo any work done by prepare_request()
|
||||
* @do_one_request: do encryption for current request
|
||||
*/
|
||||
struct crypto_engine_op {
|
||||
int (*prepare_request)(struct crypto_engine *engine,
|
||||
void *areq);
|
||||
int (*unprepare_request)(struct crypto_engine *engine,
|
||||
void *areq);
|
||||
int (*do_one_request)(struct crypto_engine *engine,
|
||||
void *areq);
|
||||
};
|
||||
|
||||
struct crypto_engine_ctx {
|
||||
struct crypto_engine_op op;
|
||||
};
|
||||
|
||||
int crypto_transfer_ablkcipher_request_to_engine(struct crypto_engine *engine,
|
||||
struct ablkcipher_request *req);
|
||||
int crypto_transfer_aead_request_to_engine(struct crypto_engine *engine,
|
||||
struct aead_request *req);
|
||||
int crypto_transfer_akcipher_request_to_engine(struct crypto_engine *engine,
|
||||
struct akcipher_request *req);
|
||||
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);
|
||||
struct ahash_request *req);
|
||||
int crypto_transfer_skcipher_request_to_engine(struct crypto_engine *engine,
|
||||
struct skcipher_request *req);
|
||||
void crypto_finalize_ablkcipher_request(struct crypto_engine *engine,
|
||||
struct ablkcipher_request *req, int err);
|
||||
void crypto_finalize_aead_request(struct crypto_engine *engine,
|
||||
struct aead_request *req, int err);
|
||||
void crypto_finalize_akcipher_request(struct crypto_engine *engine,
|
||||
struct akcipher_request *req, int err);
|
||||
void crypto_finalize_hash_request(struct crypto_engine *engine,
|
||||
struct ahash_request *req, int err);
|
||||
void crypto_finalize_skcipher_request(struct crypto_engine *engine,
|
||||
struct skcipher_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);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user