by Fabien DESSENNE

[permalink] [raw]

Subject: Re: [PATCH 6/6] crypto: stm32-cryp: convert to the new crypto engine API

(Adding my tested by)

On 10/01/18 15:25, Fabien DESSENNE wrote:
>
> On 03/01/18 21:11, Corentin Labbe wrote:
>> This patch convert the stm32-cryp driver to the new crypto engine API.
>> Signed-off-by: Corentin Labbe <[email protected]>

Tested-by: Fabien Dessenne <[email protected]>

>> ---
>> drivers/crypto/stm32/stm32-cryp.c | 21 ++++++++++++++++-----
>> 1 file changed, 16 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
>> index cf1dddbeaa2c..99e0473ef247 100644
>> --- a/drivers/crypto/stm32/stm32-cryp.c
>> +++ b/drivers/crypto/stm32/stm32-cryp.c
>> @@ -91,6 +91,7 @@
>> #define _walked_out (cryp->out_walk.offset - cryp->out_sg->offset)
>>
>> struct stm32_cryp_ctx {
>> + struct crypto_engine_reqctx enginectx;
>> struct stm32_cryp *cryp;
>> int keylen;
>> u32 key[AES_KEYSIZE_256 / sizeof(u32)];
>> @@ -494,10 +495,20 @@ static int stm32_cryp_cpu_start(struct stm32_cryp *cryp)
>> return 0;
>> }
>>
>> +static int stm32_cryp_cipher_one_req(struct crypto_engine *engine,
>> + void *areq);
> Merge these 2 lines in a single one
>
>> +static int stm32_cryp_prepare_cipher_req(struct crypto_engine *engine,
>> + void *areq);
>> +
>> static int stm32_cryp_cra_init(struct crypto_tfm *tfm)
>> {
>> + struct stm32_cryp_ctx *ctx = crypto_tfm_ctx(tfm);
>> +
>> tfm->crt_ablkcipher.reqsize = sizeof(struct stm32_cryp_reqctx);
>>
>> + ctx->enginectx.op.do_one_request = stm32_cryp_cipher_one_req;
>> + ctx->enginectx.op.prepare_request = stm32_cryp_prepare_cipher_req;
>> + ctx->enginectx.op.unprepare_request = NULL;
>> return 0;
>> }
>>
>> @@ -695,14 +706,17 @@ static int stm32_cryp_prepare_req(struct crypto_engine *engine,
>> }
>>
>> static int stm32_cryp_prepare_cipher_req(struct crypto_engine *engine,
>> - struct ablkcipher_request *req)
>> + void *areq)
>> {
>> + struct ablkcipher_request *req = container_of(areq, struct ablkcipher_request, base);
> > 80 characters (CHECKPATCH)
>
>> +
>> return stm32_cryp_prepare_req(engine, req);
>> }
>>
>> static int stm32_cryp_cipher_one_req(struct crypto_engine *engine,
>> - struct ablkcipher_request *req)
>> + void *areq)
> Merge these 2 lines in a single one
>
>> {
>> + struct ablkcipher_request *req = container_of(areq, struct ablkcipher_request, base);
> > 80 characters (CHECKPATCH)
>
>> struct stm32_cryp_ctx *ctx = crypto_ablkcipher_ctx(
>> crypto_ablkcipher_reqtfm(req));
>> struct stm32_cryp *cryp = ctx->cryp;
>> @@ -1104,9 +1118,6 @@ static int stm32_cryp_probe(struct platform_device *pdev)
>> goto err_engine1;
>> }
>>
>> - cryp->engine->prepare_cipher_request = stm32_cryp_prepare_cipher_req;
>> - cryp->engine->cipher_one_request = stm32_cryp_cipher_one_req;
>> -
>> ret = crypto_engine_start(cryp->engine);
>> if (ret) {
>> dev_err(dev, "Could not start crypto engine\n");

2018-01-12 07:15:27

by Herbert Xu

[permalink] [raw]

Subject: Re: [PATCH 2/6] crypto: engine - Permit to enqueue all async requests

On Wed, Jan 03, 2018 at 09:11:05PM +0100, 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 <[email protected]>
> ---
> crypto/crypto_engine.c | 230 ++++++++++++++++++++++++------------------------
> include/crypto/engine.h | 59 +++++++------
> 2 files changed, 148 insertions(+), 141 deletions(-)
>
> diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
> index 61e7c4e02fd2..036270b61648 100644
> --- a/crypto/crypto_engine.c
> +++ b/crypto/crypto_engine.c
> @@ -15,7 +15,6 @@
> #include <linux/err.h>
> #include <linux/delay.h>
> #include <crypto/engine.h>
> -#include <crypto/internal/hash.h>
> #include <uapi/linux/sched/types.h>
> #include "internal.h"
>
> @@ -34,11 +33,10 @@ 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;

This all looks very good. Just one minor nit, since you're storing
this in the tfm ctx as opposed to the request ctx (which is indeed
an improvement), you should remove the "req" from its name.

Thanks!
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt