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authorHerbert Xu <herbert@gondor.apana.org.au>2015-08-13 17:29:01 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2015-08-17 16:53:46 +0800
commit376e0d697a8194a5ab684d7fc57b2ce5483bda53 (patch)
tree284d453d87129d38288c20fd316ad4debf7ab9d8 /crypto
parentcrypto: seqiv - Use generic geniv init/exit helpers (diff)
downloadlinux-dev-376e0d697a8194a5ab684d7fc57b2ce5483bda53.tar.xz
linux-dev-376e0d697a8194a5ab684d7fc57b2ce5483bda53.zip
crypto: echainiv - Use generic geniv init/exit helpers
This patch replaces the echainiv init/exit handlers with the generic geniv helpers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/echainiv.c70
1 files changed, 7 insertions, 63 deletions
diff --git a/crypto/echainiv.c b/crypto/echainiv.c
index 806ebe73cb64..b96a84560b67 100644
--- a/crypto/echainiv.c
+++ b/crypto/echainiv.c
@@ -19,8 +19,6 @@
*/
#include <crypto/internal/geniv.h>
-#include <crypto/null.h>
-#include <crypto/rng.h>
#include <crypto/scatterwalk.h>
#include <linux/err.h>
#include <linux/init.h>
@@ -33,13 +31,6 @@
#define MAX_IV_SIZE 16
-struct echainiv_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 DEFINE_PER_CPU(u32 [MAX_IV_SIZE / sizeof(u32)], echainiv_iv);
/* We don't care if we get preempted and read/write IVs from the next CPU. */
@@ -103,7 +94,7 @@ static void echainiv_encrypt_complete(struct crypto_async_request *base,
static int echainiv_encrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
- struct echainiv_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;
@@ -114,7 +105,7 @@ static int echainiv_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 = echainiv_encrypt_complete;
data = req;
@@ -160,7 +151,7 @@ static int echainiv_encrypt(struct aead_request *req)
static int echainiv_decrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
- struct echainiv_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;
@@ -169,7 +160,7 @@ static int echainiv_decrypt(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;
@@ -184,53 +175,6 @@ static int echainiv_decrypt(struct aead_request *req)
return crypto_aead_decrypt(subreq);
}
-static int echainiv_init(struct crypto_aead *geniv)
-{
- struct echainiv_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 void echainiv_exit(struct crypto_aead *tfm)
-{
- struct echainiv_ctx *ctx = crypto_aead_ctx(tfm);
-
- crypto_free_aead(ctx->geniv.child);
- crypto_put_default_null_skcipher();
-}
-
static int echainiv_aead_create(struct crypto_template *tmpl,
struct rtattr **tb)
{
@@ -255,11 +199,11 @@ static int echainiv_aead_create(struct crypto_template *tmpl,
inst->alg.encrypt = echainiv_encrypt;
inst->alg.decrypt = echainiv_decrypt;
- inst->alg.init = echainiv_init;
- inst->alg.exit = echainiv_exit;
+ inst->alg.init = aead_init_geniv;
+ inst->alg.exit = aead_exit_geniv;
inst->alg.base.cra_alignmask |= __alignof__(u32) - 1;
- inst->alg.base.cra_ctxsize = sizeof(struct echainiv_ctx);
+ inst->alg.base.cra_ctxsize = sizeof(struct aead_geniv_ctx);
inst->alg.base.cra_ctxsize += inst->alg.ivsize;
inst->free = aead_geniv_free;