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: 12844860 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B8C9FC433F5 for ; Tue, 10 May 2022 11:08:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:To:References: Subject:Date:From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=nBDbRRpPYdwXudTlN6894DXGqgwp+fN8oLsEFXHQcW8=; b=qoTiYsjMJ3q6Yl aLs9pULekrxO3uxRg2cIINcFTMUlicWotvz3oD7AkJ+EqwugAOC7lLO+49Guaf3pKmTDISc1bRXT7 BomjgH+hjT4QGe2q1/lg/P1vMlxwDH38xBlRjfs5mB35u3Ei/Xhk61yX3UCZe2n0yC/egaEnlDSzK 0sB7/b09xUgMXziXVp5fUVhWzojfGknmAY1iDot6ik3aR5/y9mtq7O8YSNvfY7zZ9CKe0Ov/DPNqb SqiwV5BAwZWZZVZVIUe/Nj4XdkOKJL3b8FnualzWHeNL5YJjJD8MashS5kOk4KP6QTK3HlZfpebla 3cU6PGMHxsw91hnJSY6w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1noNiV-001Pq7-K2; Tue, 10 May 2022 11:07:47 +0000 Received: from helcar.hmeau.com ([216.24.177.18] helo=fornost.hmeau.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1noNi9-001Pgo-Rl for linux-arm-kernel@lists.infradead.org; Tue, 10 May 2022 11:07:28 +0000 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220510_040725_932694_ADDA212F X-CRM114-Status: GOOD ( 10.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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) {