crypto: seqiv - Use common IV generation code
This patch makes use of the new common IV generation code.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/seqiv.c b/crypto/seqiv.c
index b55c685..9c4490b 100644
--- a/crypto/seqiv.c
+++ b/crypto/seqiv.c
@@ -13,7 +13,7 @@
*
*/
-#include <crypto/internal/aead.h>
+#include <crypto/internal/geniv.h>
#include <crypto/internal/skcipher.h>
#include <crypto/null.h>
#include <crypto/rng.h>
@@ -37,30 +37,14 @@
};
struct seqiv_aead_ctx {
- struct crypto_aead *child;
- spinlock_t lock;
+ /* 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 int seqiv_aead_setkey(struct crypto_aead *tfm,
- const u8 *key, unsigned int keylen)
-{
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(tfm);
-
- return crypto_aead_setkey(ctx->child, key, keylen);
-}
-
-static int seqiv_aead_setauthsize(struct crypto_aead *tfm,
- unsigned int authsize)
-{
- struct seqiv_aead_ctx *ctx = crypto_aead_ctx(tfm);
-
- return crypto_aead_setauthsize(ctx->child, authsize);
-}
-
static void seqiv_complete2(struct skcipher_givcrypt_request *req, int err)
{
struct ablkcipher_request *subreq = skcipher_givcrypt_reqctx(req);
@@ -289,7 +273,7 @@
return err;
}
-static int seqiv_aead_encrypt_compat(struct aead_request *req)
+static int seqniv_aead_encrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
@@ -309,7 +293,7 @@
if (req->assoclen > 12)
return -EINVAL;
- aead_request_set_tfm(subreq, ctx->child);
+ aead_request_set_tfm(subreq, ctx->geniv.child);
compl = seqniv_aead_encrypt_complete;
data = req;
@@ -359,7 +343,7 @@
if (req->cryptlen < ivsize)
return -EINVAL;
- aead_request_set_tfm(subreq, ctx->child);
+ aead_request_set_tfm(subreq, ctx->geniv.child);
compl = req->base.complete;
data = req->base.data;
@@ -403,7 +387,7 @@
return err;
}
-static int seqiv_aead_decrypt_compat(struct aead_request *req)
+static int seqniv_aead_decrypt(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
@@ -419,7 +403,7 @@
if (req->cryptlen < ivsize + crypto_aead_authsize(geniv))
return -EINVAL;
- aead_request_set_tfm(subreq, ctx->child);
+ aead_request_set_tfm(subreq, ctx->geniv.child);
compl = req->base.complete;
data = req->base.data;
@@ -472,7 +456,7 @@
if (req->cryptlen < ivsize + crypto_aead_authsize(geniv))
return -EINVAL;
- aead_request_set_tfm(subreq, ctx->child);
+ aead_request_set_tfm(subreq, ctx->geniv.child);
compl = req->base.complete;
data = req->base.data;
@@ -536,27 +520,27 @@
return seqiv_aead_givencrypt(req);
}
-static int seqiv_aead_encrypt_compat_first(struct aead_request *req)
+static int seqniv_aead_encrypt_first(struct aead_request *req)
{
struct crypto_aead *geniv = crypto_aead_reqtfm(req);
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
int err = 0;
- spin_lock_bh(&ctx->lock);
- if (geniv->encrypt != seqiv_aead_encrypt_compat_first)
+ spin_lock_bh(&ctx->geniv.lock);
+ if (geniv->encrypt != seqniv_aead_encrypt_first)
goto unlock;
- geniv->encrypt = seqiv_aead_encrypt_compat;
+ geniv->encrypt = seqniv_aead_encrypt;
err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt,
crypto_aead_ivsize(geniv));
unlock:
- spin_unlock_bh(&ctx->lock);
+ spin_unlock_bh(&ctx->geniv.lock);
if (err)
return err;
- return seqiv_aead_encrypt_compat(req);
+ return seqniv_aead_encrypt(req);
}
static int seqiv_aead_encrypt_first(struct aead_request *req)
@@ -565,7 +549,7 @@
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
int err = 0;
- spin_lock_bh(&ctx->lock);
+ spin_lock_bh(&ctx->geniv.lock);
if (geniv->encrypt != seqiv_aead_encrypt_first)
goto unlock;
@@ -574,7 +558,7 @@
crypto_aead_ivsize(geniv));
unlock:
- spin_unlock_bh(&ctx->lock);
+ spin_unlock_bh(&ctx->geniv.lock);
if (err)
return err;
@@ -613,7 +597,7 @@
struct seqiv_aead_ctx *ctx = crypto_aead_ctx(geniv);
int err;
- spin_lock_init(&ctx->lock);
+ spin_lock_init(&ctx->geniv.lock);
crypto_aead_set_reqsize(geniv, sizeof(struct aead_request));
@@ -626,7 +610,7 @@
if (err)
goto drop_null;
- ctx->child = geniv->child;
+ ctx->geniv.child = geniv->child;
geniv->child = geniv;
out:
@@ -651,7 +635,7 @@
{
struct seqiv_aead_ctx *ctx = crypto_tfm_ctx(tfm);
- crypto_free_aead(ctx->child);
+ crypto_free_aead(ctx->geniv.child);
crypto_put_default_null_skcipher();
}
@@ -738,15 +722,16 @@
if (inst->alg.base.cra_aead.encrypt)
return seqiv_old_aead_create(tmpl, inst);
+ spawn = aead_instance_ctx(inst);
+ alg = crypto_spawn_aead_alg(spawn);
+
+ if (alg->base.cra_aead.encrypt)
+ goto done;
+
err = -EINVAL;
if (inst->alg.ivsize != sizeof(u64))
goto free_inst;
- spawn = aead_instance_ctx(inst);
- alg = crypto_spawn_aead_alg(spawn);
-
- inst->alg.setkey = seqiv_aead_setkey;
- inst->alg.setauthsize = seqiv_aead_setauthsize;
inst->alg.encrypt = seqiv_aead_encrypt_first;
inst->alg.decrypt = seqiv_aead_decrypt;
@@ -756,14 +741,7 @@
inst->alg.base.cra_ctxsize = sizeof(struct seqiv_aead_ctx);
inst->alg.base.cra_ctxsize += inst->alg.base.cra_aead.ivsize;
- if (alg->base.cra_aead.encrypt) {
- inst->alg.encrypt = seqiv_aead_encrypt_compat_first;
- inst->alg.decrypt = seqiv_aead_decrypt_compat;
-
- inst->alg.base.cra_init = seqniv_aead_init;
- inst->alg.base.cra_exit = seqiv_aead_exit;
- }
-
+done:
err = aead_register_instance(tmpl, inst);
if (err)
goto free_inst;
@@ -816,17 +794,18 @@
if (IS_ERR(inst))
goto put_rng;
+ spawn = aead_instance_ctx(inst);
+ alg = crypto_spawn_aead_alg(spawn);
+
+ if (alg->base.cra_aead.encrypt)
+ goto done;
+
err = -EINVAL;
if (inst->alg.ivsize != sizeof(u64))
goto free_inst;
- spawn = aead_instance_ctx(inst);
- alg = crypto_spawn_aead_alg(spawn);
-
- inst->alg.setkey = seqiv_aead_setkey;
- inst->alg.setauthsize = seqiv_aead_setauthsize;
- inst->alg.encrypt = seqiv_aead_encrypt_compat_first;
- inst->alg.decrypt = seqiv_aead_decrypt_compat;
+ inst->alg.encrypt = seqniv_aead_encrypt_first;
+ inst->alg.decrypt = seqniv_aead_decrypt;
inst->alg.base.cra_init = seqniv_aead_init;
inst->alg.base.cra_exit = seqiv_aead_exit;
@@ -835,6 +814,7 @@
inst->alg.base.cra_ctxsize = sizeof(struct seqiv_aead_ctx);
inst->alg.base.cra_ctxsize += inst->alg.base.cra_aead.ivsize;
+done:
err = aead_register_instance(tmpl, inst);
if (err)
goto free_inst;