diff options
| author | Eric Biggers <ebiggers@google.com> | 2020-01-02 20:04:35 -0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2020-01-09 11:30:57 +0800 |
| commit | 48fb3e5785be7ef69a43c04f617a1c05000ee2d0 (patch) | |
| tree | bfff2c6e847f25d451b842ce269bd795104681ed | |
| parent | aed11cf57ddb24aa97ca3b55c9e26c37759c4baa (diff) | |
crypto: hash - add support for new way of freeing instances
Add support to shash and ahash for the new way of freeing instances
(already used for skcipher, aead, and akcipher) where a ->free() method
is installed to the instance struct itself. These methods are more
strongly-typed than crypto_template::free(), which they replace.
This will allow removing support for the old way of freeing instances.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/ahash.c | 13 | ||||
| -rw-r--r-- | crypto/shash.c | 13 | ||||
| -rw-r--r-- | include/crypto/internal/hash.h | 2 |
3 files changed, 28 insertions, 0 deletions
diff --git a/crypto/ahash.c b/crypto/ahash.c index c77717fcea8e..61e374d76b04 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -511,6 +511,18 @@ static unsigned int crypto_ahash_extsize(struct crypto_alg *alg) return crypto_alg_extsize(alg); } +static void crypto_ahash_free_instance(struct crypto_instance *inst) +{ + struct ahash_instance *ahash = ahash_instance(inst); + + if (!ahash->free) { + inst->tmpl->free(inst); + return; + } + + ahash->free(ahash); +} + #ifdef CONFIG_NET static int crypto_ahash_report(struct sk_buff *skb, struct crypto_alg *alg) { @@ -547,6 +559,7 @@ static void crypto_ahash_show(struct seq_file *m, struct crypto_alg *alg) static const struct crypto_type crypto_ahash_type = { .extsize = crypto_ahash_extsize, .init_tfm = crypto_ahash_init_tfm, + .free = crypto_ahash_free_instance, #ifdef CONFIG_PROC_FS .show = crypto_ahash_show, #endif diff --git a/crypto/shash.c b/crypto/shash.c index 4d6ccb59e126..2f6adb49727b 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -423,6 +423,18 @@ static int crypto_shash_init_tfm(struct crypto_tfm *tfm) return 0; } +static void crypto_shash_free_instance(struct crypto_instance *inst) +{ + struct shash_instance *shash = shash_instance(inst); + + if (!shash->free) { + inst->tmpl->free(inst); + return; + } + + shash->free(shash); +} + #ifdef CONFIG_NET static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg) { @@ -459,6 +471,7 @@ static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg) static const struct crypto_type crypto_shash_type = { .extsize = crypto_alg_extsize, .init_tfm = crypto_shash_init_tfm, + .free = crypto_shash_free_instance, #ifdef CONFIG_PROC_FS .show = crypto_shash_show, #endif diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h index c84b7cb29887..c550386221bb 100644 --- a/include/crypto/internal/hash.h +++ b/include/crypto/internal/hash.h @@ -30,6 +30,7 @@ struct crypto_hash_walk { }; struct ahash_instance { + void (*free)(struct ahash_instance *inst); union { struct { char head[offsetof(struct ahash_alg, halg.base)]; @@ -40,6 +41,7 @@ struct ahash_instance { }; struct shash_instance { + void (*free)(struct shash_instance *inst); union { struct { char head[offsetof(struct shash_alg, base)]; |