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authorHerbert Xu <herbert@gondor.apana.org.au>2015-08-13 17:28:59 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-08-17 16:53:46 +0800
commit659e7f528317d5a97e5100abcaf6e00552c23417 (patch)
tree6d989f700929503cd18555a02212f2ef662f40f7 /crypto/seqiv.c
parentcrypto: aead - Add type-safe geniv init/exit helpers (diff)
downloadlinux-dev-659e7f528317d5a97e5100abcaf6e00552c23417.tar.xz
linux-dev-659e7f528317d5a97e5100abcaf6e00552c23417.zip
crypto: seqiv - Use generic geniv init/exit helpers
This patch replaces the seqiv init/exit handlers with the generic geniv helpers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/seqiv.c')
-rw-r--r--crypto/seqiv.c75
1 files changed, 7 insertions, 68 deletions
diff --git a/crypto/seqiv.c b/crypto/seqiv.c
index 3d8b02b80872..15a749a5cab7 100644
--- a/crypto/seqiv.c
+++ b/crypto/seqiv.c
@@ -15,7 +15,6 @@
#include <crypto/internal/geniv.h>
#include <crypto/internal/skcipher.h>
-#include <crypto/null.h>
#include <crypto/rng.h>
#include <crypto/scatterwalk.h>
#include <linux/err.h>
@@ -31,13 +30,6 @@ struct seqiv_ctx {
u8 salt[] __attribute__ ((aligned(__alignof__(u32))));
};
-struct seqiv_aead_ctx {
- /* aead_geniv_ctx must be first the element */
- struct aead_geniv_ctx geniv;
- struct crypto_blkcipher *null;
- u8 salt[] __attribute__ ((aligned(__alignof__(u32))));
-};
-
static void seqiv_free(struct crypto_instance *inst);
static void seqiv_complete2(struct skcipher_givcrypt_request *req, int err)
@@ -155,7 +147,7 @@ static int seqiv_givencrypt(struct skcipher_givcrypt_request *req)
static int seqiv_aead_encrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
+ struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv);
struct aead_request *subreq = aead_request_ctx(req);
crypto_completion_t compl;
void *data;
@@ -166,7 +158,7 @@ static int seqiv_aead_encrypt(struct aead_request *req)
if (req->cryptlen < ivsize)
return -EINVAL;
- aead_request_set_tfm(subreq, ctx->geniv.child);
+ aead_request_set_tfm(subreq, ctx->child);
compl = req->base.complete;
data = req->base.data;
@@ -213,7 +205,7 @@ static int seqiv_aead_encrypt(struct aead_request *req)
static int seqiv_aead_decrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
+ struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv);
struct aead_request *subreq = aead_request_ctx(req);
crypto_completion_t compl;
void *data;
@@ -222,7 +214,7 @@ static int seqiv_aead_decrypt(struct aead_request *req)
if (req->cryptlen < ivsize + crypto_aead_authsize(geniv))
return -EINVAL;
- aead_request_set_tfm(subreq, ctx->geniv.child);
+ aead_request_set_tfm(subreq, ctx->child);
compl = req->base.complete;
data = req->base.data;
@@ -258,59 +250,6 @@ static int seqiv_init(struct crypto_tfm *tfm)
return err ?: skcipher_geniv_init(tfm);
}
-static int seqiv_aead_init_common(struct crypto_aead *geniv,
- unsigned int reqsize)
-{
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
- int err;
-
- spin_lock_init(&ctx->geniv.lock);
-
- crypto_aead_set_reqsize(geniv, sizeof(struct aead_request));
-
- err = crypto_get_default_rng();
- if (err)
- goto out;
-
- err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
- crypto_aead_ivsize(geniv));
- crypto_put_default_rng();
- if (err)
- goto out;
-
- ctx->null = crypto_get_default_null_skcipher();
- err = PTR_ERR(ctx->null);
- if (IS_ERR(ctx->null))
- goto out;
-
- err = aead_geniv_init(crypto_aead_tfm(geniv));
- if (err)
- goto drop_null;
-
- ctx->geniv.child = geniv->child;
- geniv->child = geniv;
-
-out:
- return err;
-
-drop_null:
- crypto_put_default_null_skcipher();
- goto out;
-}
-
-static int seqiv_aead_init(struct crypto_aead *tfm)
-{
- return seqiv_aead_init_common(tfm, sizeof(struct aead_request));
-}
-
-static void seqiv_aead_exit(struct crypto_aead *tfm)
-{
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(tfm);
-
- crypto_free_aead(ctx->geniv.child);
- crypto_put_default_null_skcipher();
-}
-
static int seqiv_ablkcipher_create(struct crypto_template *tmpl,
struct rtattr **tb)
{
@@ -370,10 +309,10 @@ static int seqiv_aead_create(struct crypto_template *tmpl, struct rtattr **tb)
inst->alg.encrypt = seqiv_aead_encrypt;
inst->alg.decrypt = seqiv_aead_decrypt;
- inst->alg.init = seqiv_aead_init;
- inst->alg.exit = seqiv_aead_exit;
+ inst->alg.init = aead_init_geniv;
+ inst->alg.exit = aead_exit_geniv;
- inst->alg.base.cra_ctxsize = sizeof(struct seqiv_aead_ctx);
+ inst->alg.base.cra_ctxsize = sizeof(struct aead_geniv_ctx);
inst->alg.base.cra_ctxsize += inst->alg.ivsize;
err = aead_register_instance(tmpl, inst);