From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DB28C433EF for ; Tue, 10 May 2022 11:07:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1257F6B0072; Tue, 10 May 2022 07:07:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0D2956B0073; Tue, 10 May 2022 07:07:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F024C6B0074; Tue, 10 May 2022 07:07:25 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id E20CA6B0072 for ; Tue, 10 May 2022 07:07:25 -0400 (EDT) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay13.hostedemail.com (Postfix) with ESMTP id B4D52615E1 for ; Tue, 10 May 2022 11:07:25 +0000 (UTC) X-FDA: 79449557250.05.304E40E Received: from fornost.hmeau.com (helcar.hmeau.com [216.24.177.18]) by imf17.hostedemail.com (Postfix) with ESMTP id 876DD400A5 for ; Tue, 10 May 2022 11:07:07 +0000 (UTC) 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: X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 876DD400A5 Authentication-Results: imf17.hostedemail.com; dkim=none; spf=pass (imf17.hostedemail.com: domain of herbert@gondor.apana.org.au designates 216.24.177.18 as permitted sender) smtp.mailfrom=herbert@gondor.apana.org.au; dmarc=none X-Rspam-User: X-Stat-Signature: qy9gdpsj1j6xr9kxeph7j6rponzwcgsz X-HE-Tag: 1652180827-210423 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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) {