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crypto: Use scatterwalk_crypto_chain

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Use scatterwalk_crypto_chain in favor of locally defined chaining functions.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Steffen Klassert
2010-11-22 11:26:54 +01:00
committed by Herbert Xu
parent 079f2f7485
commit c920fa6051
3 changed files with 8 additions and 51 deletions
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22
crypto/authenc.c
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@@ -107,20 +107,6 @@ badkey:
goto out;
}
static void authenc_chain(struct scatterlist *head, struct scatterlist *sg,
int chain)
{
if (chain) {
head->length += sg->length;
sg = scatterwalk_sg_next(sg);
}
if (sg)
scatterwalk_sg_chain(head, 2, sg);
else
sg_mark_end(head);
}
static void authenc_geniv_ahash_update_done(struct crypto_async_request *areq,
int err)
{
@@ -345,7 +331,7 @@ static int crypto_authenc_genicv(struct aead_request *req, u8 *iv,
if (ivsize) {
sg_init_table(cipher, 2);
sg_set_buf(cipher, iv, ivsize);
authenc_chain(cipher, dst, vdst == iv + ivsize);
scatterwalk_crypto_chain(cipher, dst, vdst == iv + ivsize, 2);
dst = cipher;
cryptlen += ivsize;
}
@@ -354,7 +340,7 @@ static int crypto_authenc_genicv(struct aead_request *req, u8 *iv,
authenc_ahash_fn = crypto_authenc_ahash;
sg_init_table(asg, 2);
sg_set_page(asg, sg_page(assoc), assoc->length, assoc->offset);
authenc_chain(asg, dst, 0);
scatterwalk_crypto_chain(asg, dst, 0, 2);
dst = asg;
cryptlen += req->assoclen;
}
@@ -499,7 +485,7 @@ static int crypto_authenc_iverify(struct aead_request *req, u8 *iv,
if (ivsize) {
sg_init_table(cipher, 2);
sg_set_buf(cipher, iv, ivsize);
authenc_chain(cipher, src, vsrc == iv + ivsize);
scatterwalk_crypto_chain(cipher, src, vsrc == iv + ivsize, 2);
src = cipher;
cryptlen += ivsize;
}
@@ -508,7 +494,7 @@ static int crypto_authenc_iverify(struct aead_request *req, u8 *iv,
authenc_ahash_fn = crypto_authenc_ahash;
sg_init_table(asg, 2);
sg_set_page(asg, sg_page(assoc), assoc->length, assoc->offset);
authenc_chain(asg, src, 0);
scatterwalk_crypto_chain(asg, src, 0, 2);
src = asg;
cryptlen += req->assoclen;
}