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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-20 13:29:40 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-12-27 18:18:04 +0800 |
| commit | b3c16bfc6a79ae517ec3c44be615aed0ffa52c53 (patch) | |
| tree | 1a0405808ed63f31289bee2ba5927cda3496e908 /crypto/skcipher.c | |
| parent | crypto: chtls - Fixed memory leak (diff) | |
| download | linux-dev-b3c16bfc6a79ae517ec3c44be615aed0ffa52c53.tar.xz linux-dev-b3c16bfc6a79ae517ec3c44be615aed0ffa52c53.zip | |
crypto: skcipher - Add skcipher_ialg_simple helper
This patch introduces the skcipher_ialg_simple helper which fetches
the crypto_alg structure from a simple skcipher instance's spawn.
This allows us to remove the third argument from the function
skcipher_alloc_instance_simple.
In doing so the reference count to the algorithm is now maintained
by the Crypto API and the caller no longer needs to drop the alg
refcount.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
| -rw-r--r-- | crypto/skcipher.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/crypto/skcipher.c b/crypto/skcipher.c index 39a718d99220..37adb71f7759 100644 --- a/crypto/skcipher.c +++ b/crypto/skcipher.c @@ -938,15 +938,12 @@ static void skcipher_free_instance_simple(struct skcipher_instance *inst) * * @tmpl: the template being instantiated * @tb: the template parameters - * @cipher_alg_ret: on success, a pointer to the underlying cipher algorithm is - * returned here. It must be dropped with crypto_mod_put(). * * Return: a pointer to the new instance, or an ERR_PTR(). The caller still * needs to register the instance. */ -struct skcipher_instance * -skcipher_alloc_instance_simple(struct crypto_template *tmpl, struct rtattr **tb, - struct crypto_alg **cipher_alg_ret) +struct skcipher_instance *skcipher_alloc_instance_simple( + struct crypto_template *tmpl, struct rtattr **tb) { struct crypto_attr_type *algt; struct crypto_alg *cipher_alg; @@ -982,6 +979,7 @@ skcipher_alloc_instance_simple(struct crypto_template *tmpl, struct rtattr **tb, if (err) goto err_free_inst; + spawn->dropref = true; err = crypto_init_spawn(spawn, cipher_alg, skcipher_crypto_instance(inst), CRYPTO_ALG_TYPE_MASK); @@ -1003,7 +1001,6 @@ skcipher_alloc_instance_simple(struct crypto_template *tmpl, struct rtattr **tb, inst->alg.init = skcipher_init_tfm_simple; inst->alg.exit = skcipher_exit_tfm_simple; - *cipher_alg_ret = cipher_alg; return inst; err_free_inst: |