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-rw-r--r--crypto/blkcipher.c70
1 files changed, 65 insertions, 5 deletions
diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c
index bf459179efe3..8edf40c835a7 100644
--- a/crypto/blkcipher.c
+++ b/crypto/blkcipher.c
@@ -349,13 +349,48 @@ static int setkey(struct crypto_tfm *tfm, const u8 *key,
return cipher->setkey(tfm, key, keylen);
}
+static int async_setkey(struct crypto_ablkcipher *tfm, const u8 *key,
+ unsigned int keylen)
+{
+ return setkey(crypto_ablkcipher_tfm(tfm), key, keylen);
+}
+
+static int async_encrypt(struct ablkcipher_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+ struct blkcipher_desc desc = {
+ .tfm = __crypto_blkcipher_cast(tfm),
+ .info = req->info,
+ .flags = req->base.flags,
+ };
+
+
+ return alg->encrypt(&desc, req->dst, req->src, req->nbytes);
+}
+
+static int async_decrypt(struct ablkcipher_request *req)
+{
+ struct crypto_tfm *tfm = req->base.tfm;
+ struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+ struct blkcipher_desc desc = {
+ .tfm = __crypto_blkcipher_cast(tfm),
+ .info = req->info,
+ .flags = req->base.flags,
+ };
+
+ return alg->decrypt(&desc, req->dst, req->src, req->nbytes);
+}
+
static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg, u32 type,
u32 mask)
{
struct blkcipher_alg *cipher = &alg->cra_blkcipher;
unsigned int len = alg->cra_ctxsize;
- if (cipher->ivsize) {
+ type ^= CRYPTO_ALG_ASYNC;
+ mask &= CRYPTO_ALG_ASYNC;
+ if ((type & mask) && cipher->ivsize) {
len = ALIGN(len, (unsigned long)alg->cra_alignmask + 1);
len += cipher->ivsize;
}
@@ -363,16 +398,26 @@ static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg, u32 type,
return len;
}
-static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+static int crypto_init_blkcipher_ops_async(struct crypto_tfm *tfm)
+{
+ struct ablkcipher_tfm *crt = &tfm->crt_ablkcipher;
+ struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+
+ crt->setkey = async_setkey;
+ crt->encrypt = async_encrypt;
+ crt->decrypt = async_decrypt;
+ crt->ivsize = alg->ivsize;
+
+ return 0;
+}
+
+static int crypto_init_blkcipher_ops_sync(struct crypto_tfm *tfm)
{
struct blkcipher_tfm *crt = &tfm->crt_blkcipher;
struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
unsigned long align = crypto_tfm_alg_alignmask(tfm) + 1;
unsigned long addr;
- if (alg->ivsize > PAGE_SIZE / 8)
- return -EINVAL;
-
crt->setkey = setkey;
crt->encrypt = alg->encrypt;
crt->decrypt = alg->decrypt;
@@ -385,6 +430,21 @@ static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
return 0;
}
+static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask)
+{
+ struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher;
+
+ if (alg->ivsize > PAGE_SIZE / 8)
+ return -EINVAL;
+
+ type ^= CRYPTO_ALG_ASYNC;
+ mask &= CRYPTO_ALG_ASYNC;
+ if (type & mask)
+ return crypto_init_blkcipher_ops_sync(tfm);
+ else
+ return crypto_init_blkcipher_ops_async(tfm);
+}
+
static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg)
__attribute__ ((unused));
static void crypto_blkcipher_show(struct seq_file *m, struct crypto_alg *alg)