6.6-stable review patch. If anyone has any objections, please let me know.
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From: Herbert Xu herbert@gondor.apana.org.au
[ Upstream commit 9e01aaa1033d6e40f8d7cf4f20931a61ce9e3f04 ]
Add a reqsize field to struct ahash_alg and use it to set the default reqsize so that algorithms with a static reqsize are not forced to create an init_tfm function.
Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- crypto/ahash.c | 4 ++++ include/crypto/hash.h | 3 +++ 2 files changed, 7 insertions(+)
diff --git a/crypto/ahash.c b/crypto/ahash.c index 709ef09407991..6168f3532f552 100644 --- a/crypto/ahash.c +++ b/crypto/ahash.c @@ -427,6 +427,7 @@ static int crypto_ahash_init_tfm(struct crypto_tfm *tfm) hash->setkey = ahash_nosetkey;
crypto_ahash_set_statesize(hash, alg->halg.statesize); + crypto_ahash_set_reqsize(hash, alg->reqsize);
if (tfm->__crt_alg->cra_type != &crypto_ahash_type) return crypto_init_shash_ops_async(tfm); @@ -599,6 +600,9 @@ static int ahash_prepare_alg(struct ahash_alg *alg) if (alg->halg.statesize == 0) return -EINVAL;
+ if (alg->reqsize && alg->reqsize < alg->halg.statesize) + return -EINVAL; + err = hash_prepare_alg(&alg->halg); if (err) return err; diff --git a/include/crypto/hash.h b/include/crypto/hash.h index f7c2a22cd776d..c0d472fdc82e6 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -153,6 +153,7 @@ struct ahash_request { * This is a counterpart to @init_tfm, used to remove * various changes set in @init_tfm. * @clone_tfm: Copy transform into new object, may allocate memory. + * @reqsize: Size of the request context. * @halg: see struct hash_alg_common */ struct ahash_alg { @@ -169,6 +170,8 @@ struct ahash_alg { void (*exit_tfm)(struct crypto_ahash *tfm); int (*clone_tfm)(struct crypto_ahash *dst, struct crypto_ahash *src);
+ unsigned int reqsize; + struct hash_alg_common halg; };