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 b55c6857a1a92fc0da6d08e7d33fa747c413f5b6..9c4490b252561f209958c3e59935316095fd391a 100644 (file)
--- 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_ctx {
 };
 
 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 @@ static int seqiv_aead_givencrypt(struct aead_givcrypt_request *req)
        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 @@ static int seqiv_aead_encrypt_compat(struct aead_request *req)
        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 @@ static int seqiv_aead_encrypt(struct aead_request *req)
        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 @@ static int seqiv_aead_encrypt(struct aead_request *req)
        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 @@ static int seqiv_aead_decrypt_compat(struct aead_request *req)
        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 @@ 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->child);
+       aead_request_set_tfm(subreq, ctx->geniv.child);
 
        compl = req->base.complete;
        data = req->base.data;
@@ -536,27 +520,27 @@ unlock:
        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 @@ static int seqiv_aead_encrypt_first(struct aead_request *req)
        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 @@ static int seqiv_aead_encrypt_first(struct aead_request *req)
                                   crypto_aead_ivsize(geniv));
 
 unlock:
-       spin_unlock_bh(&ctx->lock);
+       spin_unlock_bh(&ctx->geniv.lock);
 
        if (err)
                return err;
@@ -613,7 +597,7 @@ static int seqiv_aead_init_common(struct crypto_tfm *tfm, unsigned int reqsize)
        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 @@ static int seqiv_aead_init_common(struct crypto_tfm *tfm, unsigned int reqsize)
        if (err)
                goto drop_null;
 
-       ctx->child = geniv->child;
+       ctx->geniv.child = geniv->child;
        geniv->child = geniv;
 
 out:
@@ -651,7 +635,7 @@ static void seqiv_aead_exit(struct crypto_tfm *tfm)
 {
        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 @@ static int seqiv_aead_create(struct crypto_template *tmpl, struct rtattr **tb)
        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 @@ static int seqiv_aead_create(struct crypto_template *tmpl, struct rtattr **tb)
        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 @@ static int seqniv_create(struct crypto_template *tmpl, struct rtattr **tb)
        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 @@ static int seqniv_create(struct crypto_template *tmpl, struct rtattr **tb)
        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;