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crypto: skcipher - Set tfm in SYNC_SKCIPHER_REQUEST_ON_STACK

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Set the request tfm directly in SYNC_SKCIPHER_REQUEST_ON_STACK since
the tfm is already available.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2025-02-14 14:02:08 +08:00
parent 7505436e29
commit 12a2b40d49
1 changed files with 13 additions and 6 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

19
include/crypto/skcipher.h
View file

@ -214,16 +214,17 @@ struct lskcipher_alg {
#define MAX_SYNC_SKCIPHER_REQSIZE 384
/*
* This performs a type-check against the "tfm" argument to make sure
* This performs a type-check against the "_tfm" argument to make sure
* all users have the correct skcipher tfm for doing on-stack requests.
*/
#define SYNC_SKCIPHER_REQUEST_ON_STACK(name, tfm) \
#define SYNC_SKCIPHER_REQUEST_ON_STACK(name, _tfm) \
char __##name##_desc[sizeof(struct skcipher_request) + \
MAX_SYNC_SKCIPHER_REQSIZE + \
(!(sizeof((struct crypto_sync_skcipher *)1 == \
(typeof(tfm))1))) \
MAX_SYNC_SKCIPHER_REQSIZE \
] CRYPTO_MINALIGN_ATTR; \
struct skcipher_request *name = (void *)__##name##_desc
struct skcipher_request *name = \
(((struct skcipher_request *)__##name##_desc)->base.tfm = \
crypto_sync_skcipher_tfm((_tfm)), \
(void *)__##name##_desc)
/**
* DOC: Symmetric Key Cipher API
@ -311,6 +312,12 @@ static inline struct crypto_tfm *crypto_lskcipher_tfm(
return &tfm->base;
}
static inline struct crypto_tfm *crypto_sync_skcipher_tfm(
struct crypto_sync_skcipher *tfm)
{
return crypto_skcipher_tfm(&tfm->base);
}
/**
* crypto_free_skcipher() - zeroize and free cipher handle
* @tfm: cipher handle to be freed