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crypto: gcm - move to generic async completion 

gcm is starting an async. crypto op and waiting for it complete.
Move it over to generic code doing the same.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gilad Ben-Yossef 2017-10-18 08:00:42 +01:00 committed by Herbert Xu
parent 85a2dea4bd
commit 76c6739477
1 changed files with 6 additions and 26 deletions
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32
crypto/gcm.c
View File

@ -17,7 +17,6 @@
#include <crypto/gcm.h>
#include <crypto/hash.h>
#include "internal.h"
#include <linux/completion.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
@ -79,11 +78,6 @@ struct crypto_gcm_req_priv_ctx {
} u;
};
struct crypto_gcm_setkey_result {
int err;
struct completion completion;
};
static struct {
u8 buf[16];
struct scatterlist sg;
@ -99,17 +93,6 @@ static inline struct crypto_gcm_req_priv_ctx *crypto_gcm_reqctx(
return (void *)PTR_ALIGN((u8 *)aead_request_ctx(req), align + 1);
}
static void crypto_gcm_setkey_done(struct crypto_async_request *req, int err)
{
struct crypto_gcm_setkey_result *result = req->data;
if (err == -EINPROGRESS)
return;
result->err = err;
complete(&result->completion);
}
static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
unsigned int keylen)
{
@ -120,7 +103,7 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
be128 hash;
u8 iv[16];
struct crypto_gcm_setkey_result result;
struct crypto_wait wait;
struct scatterlist sg[1];
struct skcipher_request req;
@ -141,21 +124,18 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
if (!data)
return -ENOMEM;
init_completion(&data->result.completion);
crypto_init_wait(&data->wait);
sg_init_one(data->sg, &data->hash, sizeof(data->hash));
skcipher_request_set_tfm(&data->req, ctr);
skcipher_request_set_callback(&data->req, CRYPTO_TFM_REQ_MAY_SLEEP |
CRYPTO_TFM_REQ_MAY_BACKLOG,
crypto_gcm_setkey_done,
&data->result);
crypto_req_done,
&data->wait);
skcipher_request_set_crypt(&data->req, data->sg, data->sg,
sizeof(data->hash), data->iv);
err = crypto_skcipher_encrypt(&data->req);
if (err == -EINPROGRESS || err == -EBUSY) {
wait_for_completion(&data->result.completion);
err = data->result.err;
}
err = crypto_wait_req(crypto_skcipher_encrypt(&data->req),
&data->wait);
if (err)
goto out;