Commit d14f0a1f authored by Eric Biggers's avatar Eric Biggers Committed by Herbert Xu
Browse files

crypto: simd - allow registering multiple algorithms at once 



Add a function to crypto_simd that registers an array of skcipher
algorithms, then allocates and registers the simd wrapper algorithms for
them.  It assumes the naming scheme where the names of the underlying
algorithms are prefixed with two underscores.

Also add the corresponding 'unregister' function.

Most of the x86 crypto modules will be able to use these.

Signed-off-by: default avatarEric Biggers <ebiggers@google.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent d800e343

crypto/simd.c

+50 −0
Original line number Diff line number Diff line
@@ -221,4 +221,54 @@ void simd_skcipher_free(struct simd_skcipher_alg *salg) 
}

EXPORT_SYMBOL_GPL(simd_skcipher_free);



int simd_register_skciphers_compat(struct skcipher_alg *algs, int count,

				   struct simd_skcipher_alg **simd_algs)

{

	int err;

	int i;

	const char *algname;

	const char *drvname;

	const char *basename;

	struct simd_skcipher_alg *simd;



	err = crypto_register_skciphers(algs, count);

	if (err)

		return err;



	for (i = 0; i < count; i++) {

		WARN_ON(strncmp(algs[i].base.cra_name, "__", 2));

		WARN_ON(strncmp(algs[i].base.cra_driver_name, "__", 2));

		algname = algs[i].base.cra_name + 2;

		drvname = algs[i].base.cra_driver_name + 2;

		basename = algs[i].base.cra_driver_name;

		simd = simd_skcipher_create_compat(algname, drvname, basename);

		err = PTR_ERR(simd);

		if (IS_ERR(simd))

			goto err_unregister;

		simd_algs[i] = simd;

	}

	return 0;



err_unregister:

	simd_unregister_skciphers(algs, count, simd_algs);

	return err;

}

EXPORT_SYMBOL_GPL(simd_register_skciphers_compat);



void simd_unregister_skciphers(struct skcipher_alg *algs, int count,

			       struct simd_skcipher_alg **simd_algs)

{

	int i;



	crypto_unregister_skciphers(algs, count);



	for (i = 0; i < count; i++) {

		if (simd_algs[i]) {

			simd_skcipher_free(simd_algs[i]);

			simd_algs[i] = NULL;

		}

	}

}

EXPORT_SYMBOL_GPL(simd_unregister_skciphers);



MODULE_LICENSE("GPL");

include/crypto/internal/simd.h

+7 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#define _CRYPTO_INTERNAL_SIMD_H



struct simd_skcipher_alg;

struct skcipher_alg;



struct simd_skcipher_alg *simd_skcipher_create_compat(const char *algname,

						      const char *drvname,
@@ -15,4 +16,10 @@ struct simd_skcipher_alg *simd_skcipher_create(const char *algname, 
					       const char *basename);

void simd_skcipher_free(struct simd_skcipher_alg *alg);



int simd_register_skciphers_compat(struct skcipher_alg *algs, int count,

				   struct simd_skcipher_alg **simd_algs);



void simd_unregister_skciphers(struct skcipher_alg *algs, int count,

			       struct simd_skcipher_alg **simd_algs);



#endif /* _CRYPTO_INTERNAL_SIMD_H */

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