diff options
Diffstat (limited to 'crypto/cryptd.c')
| -rw-r--r-- | crypto/cryptd.c | 59 |
1 files changed, 30 insertions, 29 deletions
diff --git a/crypto/cryptd.c b/crypto/cryptd.c index 283212262adb..a1bea0f4baa8 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -191,17 +191,20 @@ static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) return ictx->queue; } -static inline void cryptd_check_internal(struct rtattr **tb, u32 *type, - u32 *mask) +static void cryptd_type_and_mask(struct crypto_attr_type *algt, + u32 *type, u32 *mask) { - struct crypto_attr_type *algt; + /* + * cryptd is allowed to wrap internal algorithms, but in that case the + * resulting cryptd instance will be marked as internal as well. + */ + *type = algt->type & CRYPTO_ALG_INTERNAL; + *mask = algt->mask & CRYPTO_ALG_INTERNAL; - algt = crypto_get_attr_type(tb); - if (IS_ERR(algt)) - return; + /* No point in cryptd wrapping an algorithm that's already async. */ + *mask |= CRYPTO_ALG_ASYNC; - *type |= algt->type & CRYPTO_ALG_INTERNAL; - *mask |= algt->mask & CRYPTO_ALG_INTERNAL; + *mask |= crypto_algt_inherited_mask(algt); } static int cryptd_init_instance(struct crypto_instance *inst, @@ -364,6 +367,7 @@ static void cryptd_skcipher_free(struct skcipher_instance *inst) static int cryptd_create_skcipher(struct crypto_template *tmpl, struct rtattr **tb, + struct crypto_attr_type *algt, struct cryptd_queue *queue) { struct skcipherd_instance_ctx *ctx; @@ -373,10 +377,7 @@ static int cryptd_create_skcipher(struct crypto_template *tmpl, u32 mask; int err; - type = 0; - mask = CRYPTO_ALG_ASYNC; - - cryptd_check_internal(tb, &type, &mask); + cryptd_type_and_mask(algt, &type, &mask); inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) @@ -395,9 +396,8 @@ static int cryptd_create_skcipher(struct crypto_template *tmpl, if (err) goto err_free_inst; - inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | - (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); - + inst->alg.base.cra_flags |= CRYPTO_ALG_ASYNC | + (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); inst->alg.ivsize = crypto_skcipher_alg_ivsize(alg); inst->alg.chunksize = crypto_skcipher_alg_chunksize(alg); inst->alg.min_keysize = crypto_skcipher_alg_min_keysize(alg); @@ -633,16 +633,17 @@ static void cryptd_hash_free(struct ahash_instance *inst) } static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, + struct crypto_attr_type *algt, struct cryptd_queue *queue) { struct hashd_instance_ctx *ctx; struct ahash_instance *inst; struct shash_alg *alg; - u32 type = 0; - u32 mask = 0; + u32 type; + u32 mask; int err; - cryptd_check_internal(tb, &type, &mask); + cryptd_type_and_mask(algt, &type, &mask); inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) @@ -661,10 +662,9 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, if (err) goto err_free_inst; - inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC | - (alg->base.cra_flags & (CRYPTO_ALG_INTERNAL | + inst->alg.halg.base.cra_flags |= CRYPTO_ALG_ASYNC | + (alg->base.cra_flags & (CRYPTO_ALG_INTERNAL| CRYPTO_ALG_OPTIONAL_KEY)); - inst->alg.halg.digestsize = alg->digestsize; inst->alg.halg.statesize = alg->statesize; inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); @@ -820,16 +820,17 @@ static void cryptd_aead_free(struct aead_instance *inst) static int cryptd_create_aead(struct crypto_template *tmpl, struct rtattr **tb, + struct crypto_attr_type *algt, struct cryptd_queue *queue) { struct aead_instance_ctx *ctx; struct aead_instance *inst; struct aead_alg *alg; - u32 type = 0; - u32 mask = CRYPTO_ALG_ASYNC; + u32 type; + u32 mask; int err; - cryptd_check_internal(tb, &type, &mask); + cryptd_type_and_mask(algt, &type, &mask); inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) @@ -848,8 +849,8 @@ static int cryptd_create_aead(struct crypto_template *tmpl, if (err) goto err_free_inst; - inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | - (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); + inst->alg.base.cra_flags |= CRYPTO_ALG_ASYNC | + (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); inst->alg.base.cra_ctxsize = sizeof(struct cryptd_aead_ctx); inst->alg.ivsize = crypto_aead_alg_ivsize(alg); @@ -884,11 +885,11 @@ static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_SKCIPHER: - return cryptd_create_skcipher(tmpl, tb, &queue); + return cryptd_create_skcipher(tmpl, tb, algt, &queue); case CRYPTO_ALG_TYPE_HASH: - return cryptd_create_hash(tmpl, tb, &queue); + return cryptd_create_hash(tmpl, tb, algt, &queue); case CRYPTO_ALG_TYPE_AEAD: - return cryptd_create_aead(tmpl, tb, &queue); + return cryptd_create_aead(tmpl, tb, algt, &queue); } return -EINVAL; |