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crypto: engine - Move crypto_engine_ops from request into crypto_alg

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Rather than having the callback in the request, move it into the
crypto_alg object.  This avoids having crypto_engine look into the
request context is private to the driver.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2023-08-13 14:54:49 +08:00
parent c1091e2bae
commit e5e7eb023f
2 changed files with 256 additions and 16 deletions
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213
crypto/crypto_engine.c
View file

@ -7,20 +7,30 @@
* Author: Baolin Wang <baolin.wang@linaro.org>
*/
#include <crypto/aead.h>
#include <crypto/akcipher.h>
#include <crypto/hash.h>
#include <crypto/internal/aead.h>
#include <crypto/internal/akcipher.h>
#include <crypto/internal/engine.h>
#include <crypto/kpp.h>
#include <crypto/skcipher.h>
#include <crypto/internal/hash.h>
#include <crypto/internal/kpp.h>
#include <crypto/internal/skcipher.h>
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <uapi/linux/sched/types.h>
#include "internal.h"
#define CRYPTO_ENGINE_MAX_QLEN 10
/* Temporary algorithm flag used to indicate an updated driver. */
#define CRYPTO_ALG_ENGINE 0x200
struct crypto_engine_alg {
struct crypto_alg base;
struct crypto_engine_op op;
};
/**
* crypto_finalize_request - finalize one request if the request is done
* @engine: the hardware engine
@ -64,6 +74,8 @@ static void crypto_pump_requests(struct crypto_engine *engine,
bool in_kthread)
{
struct crypto_async_request *async_req, *backlog;
struct crypto_engine_alg *alg;
struct crypto_engine_op *op;
unsigned long flags;
bool was_busy = false;
int ret;
@ -137,15 +149,22 @@ static void crypto_pump_requests(struct crypto_engine *engine,
}
}
enginectx = crypto_tfm_ctx(async_req->tfm);
if (async_req->tfm->__crt_alg->cra_flags & CRYPTO_ALG_ENGINE) {
alg = container_of(async_req->tfm->__crt_alg,
struct crypto_engine_alg, base);
op = &alg->op;
} else {
enginectx = crypto_tfm_ctx(async_req->tfm);
op = &enginectx->op;
if (!enginectx->op.do_one_request) {
dev_err(engine->dev, "failed to do request\n");
ret = -EINVAL;
goto req_err_1;
if (!op->do_one_request) {
dev_err(engine->dev, "failed to do request\n");
ret = -EINVAL;
goto req_err_1;
}
}
ret = enginectx->op.do_one_request(engine, async_req);
ret = op->do_one_request(engine, async_req);
/* Request unsuccessfully executed by hardware */
if (ret < 0) {
@ -556,5 +575,177 @@ int crypto_engine_exit(struct crypto_engine *engine)
}
EXPORT_SYMBOL_GPL(crypto_engine_exit);
int crypto_engine_register_aead(struct aead_engine_alg *alg)
{
if (!alg->op.do_one_request)
return -EINVAL;
alg->base.base.cra_flags |= CRYPTO_ALG_ENGINE;
return crypto_register_aead(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_register_aead);
void crypto_engine_unregister_aead(struct aead_engine_alg *alg)
{
crypto_unregister_aead(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_aead);
int crypto_engine_register_aeads(struct aead_engine_alg *algs, int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_engine_register_aead(&algs[i]);
if (ret)
goto err;
}
return 0;
err:
crypto_engine_unregister_aeads(algs, i);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_engine_register_aeads);
void crypto_engine_unregister_aeads(struct aead_engine_alg *algs, int count)
{
int i;
for (i = count - 1; i >= 0; --i)
crypto_engine_unregister_aead(&algs[i]);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_aeads);
int crypto_engine_register_ahash(struct ahash_engine_alg *alg)
{
if (!alg->op.do_one_request)
return -EINVAL;
alg->base.halg.base.cra_flags |= CRYPTO_ALG_ENGINE;
return crypto_register_ahash(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_register_ahash);
void crypto_engine_unregister_ahash(struct ahash_engine_alg *alg)
{
crypto_unregister_ahash(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_ahash);
int crypto_engine_register_ahashes(struct ahash_engine_alg *algs, int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_engine_register_ahash(&algs[i]);
if (ret)
goto err;
}
return 0;
err:
crypto_engine_unregister_ahashes(algs, i);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_engine_register_ahashes);
void crypto_engine_unregister_ahashes(struct ahash_engine_alg *algs,
int count)
{
int i;
for (i = count - 1; i >= 0; --i)
crypto_engine_unregister_ahash(&algs[i]);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_ahashes);
int crypto_engine_register_akcipher(struct akcipher_engine_alg *alg)
{
if (!alg->op.do_one_request)
return -EINVAL;
alg->base.base.cra_flags |= CRYPTO_ALG_ENGINE;
return crypto_register_akcipher(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_register_akcipher);
void crypto_engine_unregister_akcipher(struct akcipher_engine_alg *alg)
{
crypto_unregister_akcipher(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_akcipher);
int crypto_engine_register_kpp(struct kpp_engine_alg *alg)
{
if (!alg->op.do_one_request)
return -EINVAL;
alg->base.base.cra_flags |= CRYPTO_ALG_ENGINE;
return crypto_register_kpp(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_register_kpp);
void crypto_engine_unregister_kpp(struct kpp_engine_alg *alg)
{
crypto_unregister_kpp(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_kpp);
int crypto_engine_register_skcipher(struct skcipher_engine_alg *alg)
{
if (!alg->op.do_one_request)
return -EINVAL;
alg->base.base.cra_flags |= CRYPTO_ALG_ENGINE;
return crypto_register_skcipher(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_register_skcipher);
void crypto_engine_unregister_skcipher(struct skcipher_engine_alg *alg)
{
return crypto_unregister_skcipher(&alg->base);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_skcipher);
int crypto_engine_register_skciphers(struct skcipher_engine_alg *algs,
int count)
{
int i, ret;
for (i = 0; i < count; i++) {
ret = crypto_engine_register_skcipher(&algs[i]);
if (ret)
goto err;
}
return 0;
err:
crypto_engine_unregister_skciphers(algs, i);
return ret;
}
EXPORT_SYMBOL_GPL(crypto_engine_register_skciphers);
void crypto_engine_unregister_skciphers(struct skcipher_engine_alg *algs,
int count)
{
int i;
for (i = count - 1; i >= 0; --i)
crypto_engine_unregister_skcipher(&algs[i]);
}
EXPORT_SYMBOL_GPL(crypto_engine_unregister_skciphers);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Crypto hardware engine framework");

59
include/crypto/engine.h
View file

@ -7,15 +7,15 @@
#ifndef _CRYPTO_ENGINE_H
#define _CRYPTO_ENGINE_H
#include <crypto/aead.h>
#include <crypto/akcipher.h>
#include <crypto/hash.h>
#include <crypto/kpp.h>
#include <crypto/skcipher.h>
#include <linux/types.h>
struct aead_request;
struct ahash_request;
struct akcipher_request;
struct crypto_engine;
struct device;
struct kpp_request;
struct skcipher_request;
/*
* struct crypto_engine_op - crypto hardware engine operations
@ -30,6 +30,31 @@ struct crypto_engine_ctx {
struct crypto_engine_op op;
};
struct aead_engine_alg {
struct aead_alg base;
struct crypto_engine_op op;
};
struct ahash_engine_alg {
struct ahash_alg base;
struct crypto_engine_op op;
};
struct akcipher_engine_alg {
struct akcipher_alg base;
struct crypto_engine_op op;
};
struct kpp_engine_alg {
struct kpp_alg base;
struct crypto_engine_op op;
};
struct skcipher_engine_alg {
struct skcipher_alg base;
struct crypto_engine_op op;
};
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,
@ -59,4 +84,28 @@ struct crypto_engine *crypto_engine_alloc_init_and_set(struct device *dev,
bool rt, int qlen);
int crypto_engine_exit(struct crypto_engine *engine);
int crypto_engine_register_aead(struct aead_engine_alg *alg);
void crypto_engine_unregister_aead(struct aead_engine_alg *alg);
int crypto_engine_register_aeads(struct aead_engine_alg *algs, int count);
void crypto_engine_unregister_aeads(struct aead_engine_alg *algs, int count);
int crypto_engine_register_ahash(struct ahash_engine_alg *alg);
void crypto_engine_unregister_ahash(struct ahash_engine_alg *alg);
int crypto_engine_register_ahashes(struct ahash_engine_alg *algs, int count);
void crypto_engine_unregister_ahashes(struct ahash_engine_alg *algs,
int count);
int crypto_engine_register_akcipher(struct akcipher_engine_alg *alg);
void crypto_engine_unregister_akcipher(struct akcipher_engine_alg *alg);
int crypto_engine_register_kpp(struct kpp_engine_alg *alg);
void crypto_engine_unregister_kpp(struct kpp_engine_alg *alg);
int crypto_engine_register_skcipher(struct skcipher_engine_alg *alg);
void crypto_engine_unregister_skcipher(struct skcipher_engine_alg *alg);
int crypto_engine_register_skciphers(struct skcipher_engine_alg *algs,
int count);
void crypto_engine_unregister_skciphers(struct skcipher_engine_alg *algs,
int count);
#endif /* _CRYPTO_ENGINE_H */