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crypto: qce - Use skcipher for fallback

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This patch replaces use of the obsolete ablkcipher with skcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2016-06-29 18:04:04 +08:00
parent 1eb60ff82d
commit 2d20ce070d
2 changed files with 17 additions and 12 deletions
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27
drivers/crypto/qce/ablkcipher.c
View File

@ -15,8 +15,8 @@
#include <linux/interrupt.h>
#include <linux/types.h>
#include <crypto/aes.h>
#include <crypto/algapi.h>
#include <crypto/des.h>
#include <crypto/internal/skcipher.h>
#include "cipher.h"
@ -189,7 +189,7 @@ static int qce_ablkcipher_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
memcpy(ctx->enc_key, key, keylen);
return 0;
fallback:
ret = crypto_ablkcipher_setkey(ctx->fallback, key, keylen);
ret = crypto_skcipher_setkey(ctx->fallback, key, keylen);
if (!ret)
ctx->enc_keylen = keylen;
return ret;
@ -212,10 +212,16 @@ static int qce_ablkcipher_crypt(struct ablkcipher_request *req, int encrypt)
if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
ctx->enc_keylen != AES_KEYSIZE_256) {
ablkcipher_request_set_tfm(req, ctx->fallback);
ret = encrypt ? crypto_ablkcipher_encrypt(req) :
crypto_ablkcipher_decrypt(req);
ablkcipher_request_set_tfm(req, __crypto_ablkcipher_cast(tfm));
SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
skcipher_request_set_tfm(subreq, ctx->fallback);
skcipher_request_set_callback(subreq, req->base.flags,
NULL, NULL);
skcipher_request_set_crypt(subreq, req->src, req->dst,
req->nbytes, req->info);
ret = encrypt ? crypto_skcipher_encrypt(subreq) :
crypto_skcipher_decrypt(subreq);
skcipher_request_zero(subreq);
return ret;
}
@ -239,10 +245,9 @@ static int qce_ablkcipher_init(struct crypto_tfm *tfm)
memset(ctx, 0, sizeof(*ctx));
tfm->crt_ablkcipher.reqsize = sizeof(struct qce_cipher_reqctx);
ctx->fallback = crypto_alloc_ablkcipher(crypto_tfm_alg_name(tfm),
CRYPTO_ALG_TYPE_ABLKCIPHER,
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK);
ctx->fallback = crypto_alloc_skcipher(crypto_tfm_alg_name(tfm), 0,
CRYPTO_ALG_ASYNC |
CRYPTO_ALG_NEED_FALLBACK);
if (IS_ERR(ctx->fallback))
return PTR_ERR(ctx->fallback);
@ -253,7 +258,7 @@ static void qce_ablkcipher_exit(struct crypto_tfm *tfm)
{
struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
crypto_free_ablkcipher(ctx->fallback);
crypto_free_skcipher(ctx->fallback);
}
struct qce_ablkcipher_def {

2
drivers/crypto/qce/cipher.h
View File

@ -22,7 +22,7 @@
struct qce_cipher_ctx {
u8 enc_key[QCE_MAX_KEY_SIZE];
unsigned int enc_keylen;
struct crypto_ablkcipher *fallback;
struct crypto_skcipher *fallback;
};
/**