From patchwork Tue May 10 11:07:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herbert Xu X-Patchwork-Id: 571340 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 D0BEDC4321E for ; Tue, 10 May 2022 11:07:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240656AbiEJLLg (ORCPT ); Tue, 10 May 2022 07:11:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240788AbiEJLL1 (ORCPT ); Tue, 10 May 2022 07:11:27 -0400 Received: from fornost.hmeau.com (helcar.hmeau.com [216.24.177.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EBA4410636B; Tue, 10 May 2022 04:07:29 -0700 (PDT) Received: from gwarestrin.arnor.me.apana.org.au ([192.168.103.7]) by fornost.hmeau.com with smtp (Exim 4.94.2 #2 (Debian)) id 1noNhw-00BzVF-JA; Tue, 10 May 2022 21:07:14 +1000 Received: by gwarestrin.arnor.me.apana.org.au (sSMTP sendmail emulation); Tue, 10 May 2022 19:07:12 +0800 From: "Herbert Xu" Date: Tue, 10 May 2022 19:07:12 +0800 Subject: [RFC PATCH 3/7] crypto: aead - Add ctx helpers with DMA alignment References: To: Catalin Marinas , Ard Biesheuvel , Will Deacon , Marc Zyngier , Arnd Bergmann , Greg Kroah-Hartman , Andrew Morton , Linus Torvalds , Linux Memory Management List , Linux ARM , Linux Kernel Mailing List , "David S. Miller" , Linux Crypto Mailing List Message-Id: Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org This patch adds helpers to access the aead context structure and request context structure with an added alignment for DMA access. Signed-off-by: Herbert Xu --- include/crypto/internal/aead.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/include/crypto/internal/aead.h b/include/crypto/internal/aead.h index 27b7b0224ea6f..be225f3f7fdbf 100644 --- a/include/crypto/internal/aead.h +++ b/include/crypto/internal/aead.h @@ -39,6 +39,11 @@ static inline void *crypto_aead_ctx(struct crypto_aead *tfm) return crypto_tfm_ctx(&tfm->base); } +static inline void *crypto_aead_ctx_dma(struct crypto_aead *tfm) +{ + return crypto_tfm_ctx_dma(&tfm->base); +} + static inline struct crypto_instance *aead_crypto_instance( struct aead_instance *inst) { @@ -65,6 +70,20 @@ static inline void *aead_request_ctx(struct aead_request *req) return req->__ctx; } +static inline void *aead_request_ctx_dma(struct aead_request *req) +{ + unsigned int align = 1; + +#ifdef ARCH_DMA_MINALIGN + align = ARCH_DMA_MINALIGN; +#endif + + if (align <= crypto_tfm_ctx_alignment()) + align = 1; + + return PTR_ALIGN(aead_request_ctx(req), align); +} + static inline void aead_request_complete(struct aead_request *req, int err) { req->base.complete(&req->base, err); @@ -108,6 +127,15 @@ static inline void crypto_aead_set_reqsize(struct crypto_aead *aead, aead->reqsize = reqsize; } +static inline void crypto_aead_set_reqsize_dma(struct crypto_aead *aead, + unsigned int reqsize) +{ +#ifdef ARCH_DMA_MINALIGN + reqsize += ARCH_DMA_MINALIGN & ~(crypto_tfm_ctx_alignment() - 1); +#endif + aead->reqsize = reqsize; +} + static inline void aead_init_queue(struct aead_queue *queue, unsigned int max_qlen) {