Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
crypto: ahash - Set default reqsize from ahash_alg
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>
+7
+4
crypto/ahash.c
+4
crypto/ahash.c
···
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struct ahash_alg *alg = crypto_ahash_alg(hash);
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crypto_ahash_set_statesize(hash, alg->halg.statesize);
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+
crypto_ahash_set_reqsize(hash, alg->reqsize);
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if (tfm->__crt_alg->cra_type == &crypto_shash_type)
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return crypto_init_ahash_using_shash(tfm);
···
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int err;
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if (alg->halg.statesize == 0)
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+
return -EINVAL;
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+
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if (alg->reqsize && alg->reqsize < alg->halg.statesize)
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return -EINVAL;
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err = hash_prepare_alg(&alg->halg);
+3
include/crypto/hash.h
+3
include/crypto/hash.h
···
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* This is a counterpart to @init_tfm, used to remove
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* various changes set in @init_tfm.
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* @clone_tfm: Copy transform into new object, may allocate memory.
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+
* @reqsize: Size of the request context.
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* @halg: see struct hash_alg_common
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*/
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struct ahash_alg {
···
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int (*init_tfm)(struct crypto_ahash *tfm);
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void (*exit_tfm)(struct crypto_ahash *tfm);
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int (*clone_tfm)(struct crypto_ahash *dst, struct crypto_ahash *src);
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+
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+
unsigned int reqsize;
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struct hash_alg_common halg;
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};