From patchwork Thu Apr 13 06:24:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herbert Xu X-Patchwork-Id: 675223 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA25AC77B79 for ; Thu, 13 Apr 2023 06:25:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229959AbjDMGZG (ORCPT ); Thu, 13 Apr 2023 02:25:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229967AbjDMGZD (ORCPT ); Thu, 13 Apr 2023 02:25:03 -0400 Received: from 167-179-156-38.a7b39c.syd.nbn.aussiebb.net (167-179-156-38.a7b39c.syd.nbn.aussiebb.net [167.179.156.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2D5297EF9; Wed, 12 Apr 2023 23:24:59 -0700 (PDT) Received: from loth.rohan.me.apana.org.au ([192.168.167.2]) by formenos.hmeau.com with smtp (Exim 4.94.2 #2 (Debian)) id 1pmqNd-00FNW8-Vk; Thu, 13 Apr 2023 14:24:27 +0800 Received: by loth.rohan.me.apana.org.au (sSMTP sendmail emulation); Thu, 13 Apr 2023 14:24:25 +0800 From: "Herbert Xu" Date: Thu, 13 Apr 2023 14:24:25 +0800 Subject: [PATCH 6/6] crypto: cryptd - Add support for cloning hashes References: To: Linux Crypto Mailing List , David Ahern , Eric Dumazet , Paolo Abeni , Jakub Kicinski , "David S. Miller" , Dmitry Safonov , Andy Lutomirski , Ard Biesheuvel , Bob Gilligan , Dan Carpenter , David Laight , Dmitry Safonov <0x7f454c46@gmail.com>, Eric Biggers , "Eric W. Biederman" , Francesco Ruggeri , Hideaki YOSHIFUJI , Ivan Delalande , Leonard Crestez , Salam Noureddine , netdev@vger.kernel.org Message-Id: Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Allow cryptd hashes to be cloned. The underlying hash will be cloned. Signed-off-by: Herbert Xu --- crypto/cryptd.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/crypto/cryptd.c b/crypto/cryptd.c index 43ce347ccba0..bbcc368b6a55 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -446,6 +446,21 @@ static int cryptd_hash_init_tfm(struct crypto_ahash *tfm) return 0; } +static int cryptd_hash_clone_tfm(struct crypto_ahash *ntfm, + struct crypto_ahash *tfm) +{ + struct cryptd_hash_ctx *nctx = crypto_ahash_ctx(ntfm); + struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); + struct crypto_shash *hash; + + hash = crypto_clone_shash(ctx->child); + if (IS_ERR(hash)) + return PTR_ERR(hash); + + nctx->child = hash; + return 0; +} + static void cryptd_hash_exit_tfm(struct crypto_ahash *tfm) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); @@ -678,6 +693,7 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); inst->alg.init_tfm = cryptd_hash_init_tfm; + inst->alg.clone_tfm = cryptd_hash_clone_tfm; inst->alg.exit_tfm = cryptd_hash_exit_tfm; inst->alg.init = cryptd_hash_init_enqueue;