From 27d2a3300755387d2fec231d37944907ff992ce8 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 24 Jan 2007 20:50:26 +1100 Subject: [PATCH] [CRYPTO] api: Allow multiple frontends per backend This patch adds support for multiple frontend types for each backend algorithm by passing the type and mask through to the backend type init function. Signed-off-by: Herbert Xu --- crypto/algapi.c | 2 +- crypto/api.c | 25 +++++++++++++------------ crypto/blkcipher.c | 5 +++-- crypto/hash.c | 5 +++-- crypto/internal.h | 3 ++- include/crypto/algapi.h | 4 ++-- 6 files changed, 24 insertions(+), 20 deletions(-) diff --git a/crypto/algapi.c b/crypto/algapi.c index 0f1abca1b9..f7d2185b2c 100644 --- a/crypto/algapi.c +++ b/crypto/algapi.c @@ -401,7 +401,7 @@ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, if (unlikely((alg->cra_flags ^ type) & mask)) goto out_put_alg; - tfm = __crypto_alloc_tfm(alg); + tfm = __crypto_alloc_tfm(alg, type, mask); if (IS_ERR(tfm)) goto out_put_alg; diff --git a/crypto/api.c b/crypto/api.c index 8b80baec85..55af8bb0f0 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -212,12 +212,12 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask) } EXPORT_SYMBOL_GPL(crypto_alg_mod_lookup); -static int crypto_init_ops(struct crypto_tfm *tfm) +static int crypto_init_ops(struct crypto_tfm *tfm, u32 type, u32 mask) { - const struct crypto_type *type = tfm->__crt_alg->cra_type; + const struct crypto_type *type_obj = tfm->__crt_alg->cra_type; - if (type) - return type->init(tfm); + if (type_obj) + return type_obj->init(tfm, type, mask); switch (crypto_tfm_alg_type(tfm)) { case CRYPTO_ALG_TYPE_CIPHER: @@ -266,14 +266,14 @@ static void crypto_exit_ops(struct crypto_tfm *tfm) } } -static unsigned int crypto_ctxsize(struct crypto_alg *alg) +static unsigned int crypto_ctxsize(struct crypto_alg *alg, u32 type, u32 mask) { - const struct crypto_type *type = alg->cra_type; + const struct crypto_type *type_obj = alg->cra_type; unsigned int len; len = alg->cra_alignmask & ~(crypto_tfm_ctx_alignment() - 1); - if (type) - return len + type->ctxsize(alg); + if (type_obj) + return len + type_obj->ctxsize(alg, type, mask); switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { default: @@ -303,20 +303,21 @@ void crypto_shoot_alg(struct crypto_alg *alg) } EXPORT_SYMBOL_GPL(crypto_shoot_alg); -struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg) +struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, + u32 mask) { struct crypto_tfm *tfm = NULL; unsigned int tfm_size; int err = -ENOMEM; - tfm_size = sizeof(*tfm) + crypto_ctxsize(alg); + tfm_size = sizeof(*tfm) + crypto_ctxsize(alg, type, mask); tfm = kzalloc(tfm_size, GFP_KERNEL); if (tfm == NULL) goto out_err; tfm->__crt_alg = alg; - err = crypto_init_ops(tfm); + err = crypto_init_ops(tfm, type, mask); if (err) goto out_free_tfm; @@ -372,7 +373,7 @@ struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask) goto err; } - tfm = __crypto_alloc_tfm(alg); + tfm = __crypto_alloc_tfm(alg, type, mask); if (!IS_ERR(tfm)) return tfm; diff --git a/crypto/blkcipher.c b/crypto/blkcipher.c index cbb4c4e5c2..b5befe8c3a 100644 --- a/crypto/blkcipher.c +++ b/crypto/blkcipher.c @@ -349,7 +349,8 @@ static int setkey(struct crypto_tfm *tfm, const u8 *key, return cipher->setkey(tfm, key, keylen); } -static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg) +static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg, u32 type, + u32 mask) { struct blkcipher_alg *cipher = &alg->cra_blkcipher; unsigned int len = alg->cra_ctxsize; @@ -362,7 +363,7 @@ static unsigned int crypto_blkcipher_ctxsize(struct crypto_alg *alg) return len; } -static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm) +static int crypto_init_blkcipher_ops(struct crypto_tfm *tfm, u32 type, u32 mask) { struct blkcipher_tfm *crt = &tfm->crt_blkcipher; struct blkcipher_alg *alg = &tfm->__crt_alg->cra_blkcipher; diff --git a/crypto/hash.c b/crypto/hash.c index cdec23d885..12c4514f34 100644 --- a/crypto/hash.c +++ b/crypto/hash.c @@ -16,12 +16,13 @@ #include "internal.h" -static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg) +static unsigned int crypto_hash_ctxsize(struct crypto_alg *alg, u32 type, + u32 mask) { return alg->cra_ctxsize; } -static int crypto_init_hash_ops(struct crypto_tfm *tfm) +static int crypto_init_hash_ops(struct crypto_tfm *tfm, u32 type, u32 mask) { struct hash_tfm *crt = &tfm->crt_hash; struct hash_alg *alg = &tfm->__crt_alg->cra_hash; diff --git a/crypto/internal.h b/crypto/internal.h index 784a774531..60acad9788 100644 --- a/crypto/internal.h +++ b/crypto/internal.h @@ -120,7 +120,8 @@ void crypto_exit_compress_ops(struct crypto_tfm *tfm); void crypto_larval_error(const char *name, u32 type, u32 mask); void crypto_shoot_alg(struct crypto_alg *alg); -struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg); +struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, + u32 mask); int crypto_register_instance(struct crypto_template *tmpl, struct crypto_instance *inst); diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 99c534d573..4e05e93ff6 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -18,8 +18,8 @@ struct module; struct seq_file; struct crypto_type { - unsigned int (*ctxsize)(struct crypto_alg *alg); - int (*init)(struct crypto_tfm *tfm); + unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask); + int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask); void (*exit)(struct crypto_tfm *tfm); void (*show)(struct seq_file *m, struct crypto_alg *alg); }; -- 2.39.5