From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758032AbZAPHl1 (ORCPT ); Fri, 16 Jan 2009 02:41:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752741AbZAPHlL (ORCPT ); Fri, 16 Jan 2009 02:41:11 -0500 Received: from mga03.intel.com ([143.182.124.21]:19581 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752231AbZAPHlJ (ORCPT ); Fri, 16 Jan 2009 02:41:09 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.37,276,1231142400"; d="asc'?scan'208";a="100638175" Subject: [PATCH crypto -v6 1/2] AES-NI: Add support to access underlying blkcipher under cryptd ablkcipher From: Huang Ying To: Herbert Xu Cc: Sebastian Siewior , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-i1xFNzNRdz5//NAtqR0B" Date: Fri, 16 Jan 2009 15:41:06 +0800 Message-Id: <1232091666.13948.52.camel@yhuang-dev.sh.intel.com> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-i1xFNzNRdz5//NAtqR0B Content-Type: text/plain Content-Transfer-Encoding: quoted-printable cryptd_alloc_ablkcipher() will allocate a cryptd-ed ablkcipher for specified algorithm name. The new allocated one is guaranteed to be cryptd-ed ablkcipher, so the blkcipher underlying can be gotten via cryptd_ablkcipher_child(). v5: - Move declaration to crypto/cryptd.h - Fix allocation error processing in cryptd_alloc_ablkcipher() Signed-off-by: Huang Ying --- crypto/cryptd.c | 35 +++++++++++++++++++++++++++++++++++ include/crypto/cryptd.h | 27 +++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -12,6 +12,7 @@ =20 #include #include +#include #include #include #include @@ -537,6 +538,40 @@ static struct crypto_template cryptd_tmp .module =3D THIS_MODULE, }; =20 +struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, + u32 type, u32 mask) +{ + char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; + struct crypto_ablkcipher *tfm; + + if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, + "cryptd(%s)", alg_name) >=3D CRYPTO_MAX_ALG_NAME) + return ERR_PTR(-EINVAL); + tfm =3D crypto_alloc_ablkcipher(cryptd_alg_name, type, mask); + if (IS_ERR(tfm)) + return ERR_CAST(tfm); + if (crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_module !=3D THIS_MODULE) { + crypto_free_ablkcipher(tfm); + return ERR_PTR(-EINVAL); + } + + return __cryptd_ablkcipher_cast(tfm); +} +EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); + +struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher = *tfm) +{ + struct cryptd_blkcipher_ctx *ctx =3D crypto_ablkcipher_ctx(&tfm->base); + return ctx->child; +} +EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); + +void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) +{ + crypto_free_ablkcipher(&tfm->base); +} +EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); + static inline int cryptd_create_thread(struct cryptd_state *state, int (*fn)(void *data), const char *name) { --- /dev/null +++ b/include/crypto/cryptd.h @@ -0,0 +1,27 @@ +/* + * Software async crypto daemon + */ + +#ifndef _CRYPTO_CRYPT_H +#define _CRYPTO_CRYPT_H + +#include +#include + +struct cryptd_ablkcipher { + struct crypto_ablkcipher base; +}; + +static inline struct cryptd_ablkcipher *__cryptd_ablkcipher_cast( + struct crypto_ablkcipher *tfm) +{ + return (struct cryptd_ablkcipher *)tfm; +} + +/* alg_name should be algorithm to be cryptd-ed */ +struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, + u32 type, u32 mask); +struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher = *tfm); +void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm); + +#endif --=-i1xFNzNRdz5//NAtqR0B Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEABECAAYFAklwOg8ACgkQKhFGF+eHlpiMHQCgnUc42sm/spV+ay09ccje5EDR 9bcAoI81QPAXpqLDyjhS0CeXy/o5rdfQ =kUBh -----END PGP SIGNATURE----- --=-i1xFNzNRdz5//NAtqR0B--