[PATCH RFC 1/4] crypto: engine - Permit to enqueue all async requests
Corentin Labbe
clabbe.montjoie at gmail.com
Thu Dec 7 01:24:50 PST 2017
On Wed, Dec 06, 2017 at 11:02:23AM +0000, Fabien DESSENNE wrote:
>
>
> On 29/11/17 09:41, Corentin Labbe wrote:
> > 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 at gmail.com>
> > ---
> > crypto/crypto_engine.c | 188 +++++++++++-------------------------------------
> > include/crypto/engine.h | 46 +++++-------
> > 2 files changed, 60 insertions(+), 174 deletions(-)
> >
> > diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
> > index 61e7c4e02fd2..f7c4c4c1f41b 100644
> > --- a/crypto/crypto_engine.c
> > +++ b/crypto/crypto_engine.c
> > @@ -34,11 +34,10 @@ static void crypto_pump_requests(struct crypto_engine *engine,
> > bool in_kthread)
> > {
> > struct crypto_async_request *async_req, *backlog;
> > - struct ahash_request *hreq;
> > - struct ablkcipher_request *breq;
> > unsigned long flags;
> > bool was_busy = false;
> > - int ret, rtype;
> > + int ret;
> > + struct crypto_engine_reqctx *enginectx;
> >
> > spin_lock_irqsave(&engine->queue_lock, flags);
> >
> > @@ -94,7 +93,6 @@ 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);
> > @@ -104,57 +102,31 @@ static void crypto_pump_requests(struct crypto_engine *engine,
> > }
> > }
> >
> > - 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) {
> > - dev_err(engine->dev, "failed to prepare request: %d\n",
> > - ret);
> > - goto req_err;
> > - }
> > - engine->cur_req_prepared = true;
> > - }
> > - ret = engine->hash_one_request(engine, hreq);
> > - if (ret) {
> > - dev_err(engine->dev, "failed to hash 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) {
> > - dev_err(engine->dev, "failed to prepare request: %d\n",
> > - ret);
> > - goto req_err;
> > - }
> > - engine->cur_req_prepared = true;
> > - }
> > - ret = engine->cipher_one_request(engine, breq);
> > + enginectx = crypto_tfm_ctx(async_req->tfm);
> > +
> > + if (enginectx->op.prepare_request) {
> > + ret = enginectx->op.prepare_request(engine, async_req);
> > if (ret) {
> > - dev_err(engine->dev, "failed to cipher one request from queue\n");
> > + dev_err(engine->dev, "failed to prepare request: %d\n",
> > + ret);
> > goto req_err;
> > }
> > - return;
> > - default:
> > - dev_err(engine->dev, "failed to prepare request of unknown type\n");
> > - return;
> > + engine->cur_req_prepared = true;
> > + }
> > + if (!enginectx->op.do_one_request) {
> > + dev_err(engine->dev, "failed to do request\n");
> > + ret = -EINVAL;
> > + goto req_err;
> > + }
> > + ret = enginectx->op.do_one_request(engine, async_req);
> > + if (ret) {
> > + dev_err(engine->dev, "failed to hash one request from queue\n");
> > + goto req_err;
> > }
> > + return;
> >
> > req_err:
> > - 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;
> > - }
> > + crypto_finalize_request(engine, async_req, ret);
> > return;
> >
> > out:
> > @@ -170,59 +142,16 @@ static void crypto_pump_work(struct kthread_work *work)
> > }
> >
> > /**
> > - * crypto_transfer_cipher_request - transfer the new request into the
> > - * enginequeue
> > + * crypto_transfer_request - transfer the new request into the engine queue
> > * @engine: the hardware engine
> > * @req: the request need to be listed into the engine queue
> > */
> > -int crypto_transfer_cipher_request(struct crypto_engine *engine,
> > - struct ablkcipher_request *req,
> > - bool need_pump)
> > +int crypto_transfer_request(struct crypto_engine *engine,
> > + struct crypto_async_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 = ablkcipher_enqueue_request(&engine->queue, req);
> > -
> > - if (!engine->busy && need_pump)
> > - kthread_queue_work(engine->kworker, &engine->pump_requests);
> > -
> > - spin_unlock_irqrestore(&engine->queue_lock, flags);
> > - return ret;
> > -}
> > -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);
> >
> > @@ -231,7 +160,7 @@ int crypto_transfer_hash_request(struct crypto_engine *engine,
> > return -ESHUTDOWN;
> > }
> >
> > - ret = ahash_enqueue_request(&engine->queue, req);
> > + ret = crypto_enqueue_request(&engine->queue, req);
> >
> > if (!engine->busy && need_pump)
> > kthread_queue_work(engine->kworker, &engine->pump_requests);
> > @@ -239,80 +168,45 @@ int crypto_transfer_hash_request(struct crypto_engine *engine,
> > spin_unlock_irqrestore(&engine->queue_lock, flags);
> > return ret;
> > }
> > -EXPORT_SYMBOL_GPL(crypto_transfer_hash_request);
> > +EXPORT_SYMBOL_GPL(crypto_transfer_request);
> >
> > /**
> > - * crypto_transfer_hash_request_to_engine - transfer one request to list
> > + * crypto_transfer_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_hash_request_to_engine(struct crypto_engine *engine,
> > - struct ahash_request *req)
> > -{
> > - return crypto_transfer_hash_request(engine, req, true);
> > -}
> > -EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine);
> > -
> > -/**
> > - * 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_cipher_request(struct crypto_engine *engine,
> > - struct ablkcipher_request *req, int err)
> > +int crypto_transfer_request_to_engine(struct crypto_engine *engine,
> > + struct crypto_async_request *req)
> > {
> > - 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_cipher_request) {
> > - ret = engine->unprepare_cipher_request(engine, req);
> > - if (ret)
> > - dev_err(engine->dev, "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);
> > -
> > - kthread_queue_work(engine->kworker, &engine->pump_requests);
> > + return crypto_transfer_request(engine, req, true);
> > }
> > -EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request);
> > +EXPORT_SYMBOL_GPL(crypto_transfer_request_to_engine);
> >
> > /**
> > - * crypto_finalize_hash_request - finalize one request if the request is done
> > + * crypto_finalize_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)
> > +void crypto_finalize_request(struct crypto_engine *engine,
> > + struct crypto_async_request *req, int err)
> > {
> > unsigned long flags;
> > bool finalize_cur_req = false;
> > int ret;
> > + struct crypto_engine_reqctx *enginectx;
> >
> > spin_lock_irqsave(&engine->queue_lock, flags);
> > - if (engine->cur_req == &req->base)
> > + if (engine->cur_req == req)
> > finalize_cur_req = true;
> > spin_unlock_irqrestore(&engine->queue_lock, flags);
> >
> > if (finalize_cur_req) {
> > + enginectx = crypto_tfm_ctx(req->tfm);
> > if (engine->cur_req_prepared &&
> > - engine->unprepare_hash_request) {
> > - ret = engine->unprepare_hash_request(engine, req);
> > + enginectx->op.unprepare_request) {
> > + ret = enginectx->op.unprepare_request(engine, req);
> > if (ret)
> > dev_err(engine->dev, "failed to unprepare request\n");
> > }
> > @@ -322,11 +216,11 @@ void crypto_finalize_hash_request(struct crypto_engine *engine,
> > spin_unlock_irqrestore(&engine->queue_lock, flags);
> > }
> >
> > - req->base.complete(&req->base, err);
> > + req->complete(req, err);
> >
> > kthread_queue_work(engine->kworker, &engine->pump_requests);
> > }
> > -EXPORT_SYMBOL_GPL(crypto_finalize_hash_request);
> > +EXPORT_SYMBOL_GPL(crypto_finalize_request);
> >
> > /**
> > * crypto_engine_start - start the hardware engine
> > diff --git a/include/crypto/engine.h b/include/crypto/engine.h
> > index dd04c1699b51..2e45db45849b 100644
> > --- a/include/crypto/engine.h
> > +++ b/include/crypto/engine.h
> > @@ -17,7 +17,6 @@
> > #include <linux/kernel.h>
> > #include <linux/kthread.h>
> > #include <crypto/algapi.h>
> > -#include <crypto/hash.h>
> >
> > #define ENGINE_NAME_LEN 30
> > /*
> > @@ -65,19 +64,6 @@ struct crypto_engine {
>
> You also need to remove these 6 functions from the comment header of
> that structure
>
Thanks, fixed for next version.
Regards
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