From: Huang Ying Subject: [RFC PATCH crypto -v3 1/2] AES-NI: Add support to access underlying blkcipher under cryptd ablkcipher Date: Wed, 14 Jan 2009 15:44:06 +0800 Message-ID: <1231919046.5937.159.camel@yhuang-dev.sh.intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-U6X1Ug46Ppbs8JSpwwN9" Cc: Sebastian Siewior , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org To: Herbert Xu Return-path: Received: from mga11.intel.com ([192.55.52.93]:51986 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753638AbZANHoI (ORCPT ); Wed, 14 Jan 2009 02:44:08 -0500 Sender: linux-crypto-owner@vger.kernel.org List-ID: --=-U6X1Ug46Ppbs8JSpwwN9 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(). Signed-off-by: Huang Ying --- crypto/cryptd.c | 19 +++++++++++++++++++ include/crypto/algapi.h | 5 +++++ 2 files changed, 24 insertions(+) --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -537,6 +537,25 @@ static struct crypto_template cryptd_tmp .module =3D THIS_MODULE, }; =20 +struct crypto_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, + u32 type, u32 mask) +{ + char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; + + if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, + "cryptd(%s)", alg_name) >=3D CRYPTO_MAX_ALG_NAME) + return ERR_PTR(-EINVAL); + return crypto_alloc_ablkcipher(cryptd_alg_name, type, mask); +} +EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); + +struct crypto_blkcipher *cryptd_ablkcipher_child(struct crypto_ablkcipher = *tfm) +{ + struct cryptd_blkcipher_ctx *ctx =3D crypto_ablkcipher_ctx(tfm); + return ctx->child; +} +EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); + static inline int cryptd_create_thread(struct cryptd_state *state, int (*fn)(void *data), const char *name) { --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -145,6 +145,11 @@ int blkcipher_walk_virt_block(struct blk struct blkcipher_walk *walk, unsigned int blocksize); =20 +/* alg_name should be algorithm to be cryptd-ed */ +struct crypto_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, + u32 type, u32 mask); +struct crypto_blkcipher *cryptd_ablkcipher_child(struct crypto_ablkcipher = *tfm); + static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm) { unsigned long addr =3D (unsigned long)crypto_tfm_ctx(tfm); --=-U6X1Ug46Ppbs8JSpwwN9 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) iEYEABECAAYFAkltl8MACgkQKhFGF+eHlpg+wACgowtavfGpphtSzwTWpMXKg/5d 5nIAoJhgilhiu4uFl3MkYWl4OspA5m/b =5aIb -----END PGP SIGNATURE----- --=-U6X1Ug46Ppbs8JSpwwN9--