From patchwork Tue Oct 18 07:09:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "tianjia.zhang" X-Patchwork-Id: 13010025 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 024E8C433FE for ; Tue, 18 Oct 2022 07:16:09 +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:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=mDZUZrQu0QqRJlYh//cHi7+GlUoVS9rPq/NQGS6oejk=; b=vsBbRZsjwXvEUv U8Mts8NoGLXFRxFiKw00e1zB074D0gXrosh2QH7RpmTQNUfBQdq+KzUKTceB53SaVvYqw4GaMZBFG VLFTq3KfzrBqJafLHDPm4glIesLzP8UjKBHqvXYXsNBoJnoi9DkIJSBhlE2gDCHKU0qN8lp47y0ZI CyRJIjogV1n1HQtBGDyvvPfuCAbNs6W376V9B6LHB185WbGC+cn5xR3ParDXPoXcnQTVkPDop7mTK xUxwXpLmdvI2wBuZX/UGtf+spItGLhDC5lkXbzWkeNMDIXRWO3f+nF7y1jUUxtl8ebB11xAI59HUd 1Qf9Da0mG5BhnotGq9Fw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1okgoL-003ift-Pg; Tue, 18 Oct 2022 07:14:50 +0000 Received: from out30-132.freemail.mail.aliyun.com ([115.124.30.132]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1okgk9-003gvd-1e for linux-arm-kernel@lists.infradead.org; Tue, 18 Oct 2022 07:10:40 +0000 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R411e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046059;MF=tianjia.zhang@linux.alibaba.com;NM=1;PH=DS;RN=15;SR=0;TI=SMTPD_---0VSTVkS4_1666077022; Received: from localhost(mailfrom:tianjia.zhang@linux.alibaba.com fp:SMTPD_---0VSTVkS4_1666077022) by smtp.aliyun-inc.com; Tue, 18 Oct 2022 15:10:23 +0800 From: Tianjia Zhang To: Herbert Xu , "David S. Miller" , Jussi Kivilinna , Ard Biesheuvel , Mark Brown , Catalin Marinas , Will Deacon , Maxime Coquelin , Alexandre Torgue , Eric Biggers , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Cc: Tianjia Zhang Subject: [PATCH v2 06/15] crypto: arm64/sm4 - refactor and simplify CE implementation Date: Tue, 18 Oct 2022 15:09:57 +0800 Message-Id: <20221018071006.5717-7-tianjia.zhang@linux.alibaba.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20221018071006.5717-1-tianjia.zhang@linux.alibaba.com> References: <20221018071006.5717-1-tianjia.zhang@linux.alibaba.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221018_001029_542992_A64961D5 X-CRM114-Status: GOOD ( 13.76 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch does not add new features, but only refactors and simplifies the implementation of the Crypto Extension acceleration of the SM4 algorithm: Extract the macro optimized by SM4 Crypto Extension for reuse in the subsequent optimization of CCM/GCM modes. Encryption in CBC and CFB modes processes four blocks at a time instead of one, allowing the ld1 instruction to load 64 bytes of data at a time, which will reduces unnecessary memory accesses. CBC/CFB/CTR makes full use of free registers to reduce redundant memory accesses, and rearranges some instructions to improve out-of-order execution capabilities. Signed-off-by: Tianjia Zhang --- arch/arm64/crypto/sm4-ce-asm.h | 209 +++++++++++ arch/arm64/crypto/sm4-ce-core.S | 646 ++++++++++++++------------------ arch/arm64/crypto/sm4-ce-glue.c | 64 ++-- 3 files changed, 519 insertions(+), 400 deletions(-) create mode 100644 arch/arm64/crypto/sm4-ce-asm.h diff --git a/arch/arm64/crypto/sm4-ce-asm.h b/arch/arm64/crypto/sm4-ce-asm.h new file mode 100644 index 000000000000..7ea98e42e779 --- /dev/null +++ b/arch/arm64/crypto/sm4-ce-asm.h @@ -0,0 +1,209 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * SM4 helper macros for Crypto Extensions + * Copyright (C) 2022 Tianjia Zhang + */ + +#define SM4_PREPARE(ptr) \ + ld1 {v24.16b-v27.16b}, [ptr], #64; \ + ld1 {v28.16b-v31.16b}, [ptr]; + +#define SM4_CRYPT_BLK_BE(b0) \ + sm4e b0.4s, v24.4s; \ + sm4e b0.4s, v25.4s; \ + sm4e b0.4s, v26.4s; \ + sm4e b0.4s, v27.4s; \ + sm4e b0.4s, v28.4s; \ + sm4e b0.4s, v29.4s; \ + sm4e b0.4s, v30.4s; \ + sm4e b0.4s, v31.4s; \ + rev64 b0.4s, b0.4s; \ + ext b0.16b, b0.16b, b0.16b, #8; \ + rev32 b0.16b, b0.16b; + +#define SM4_CRYPT_BLK(b0) \ + rev32 b0.16b, b0.16b; \ + SM4_CRYPT_BLK_BE(b0); + +#define SM4_CRYPT_BLK2_BE(b0, b1) \ + sm4e b0.4s, v24.4s; \ + sm4e b1.4s, v24.4s; \ + sm4e b0.4s, v25.4s; \ + sm4e b1.4s, v25.4s; \ + sm4e b0.4s, v26.4s; \ + sm4e b1.4s, v26.4s; \ + sm4e b0.4s, v27.4s; \ + sm4e b1.4s, v27.4s; \ + sm4e b0.4s, v28.4s; \ + sm4e b1.4s, v28.4s; \ + sm4e b0.4s, v29.4s; \ + sm4e b1.4s, v29.4s; \ + sm4e b0.4s, v30.4s; \ + sm4e b1.4s, v30.4s; \ + sm4e b0.4s, v31.4s; \ + sm4e b1.4s, v31.4s; \ + rev64 b0.4s, b0.4s; \ + rev64 b1.4s, b1.4s; \ + ext b0.16b, b0.16b, b0.16b, #8; \ + ext b1.16b, b1.16b, b1.16b, #8; \ + rev32 b0.16b, b0.16b; \ + rev32 b1.16b, b1.16b; \ + +#define SM4_CRYPT_BLK2(b0, b1) \ + rev32 b0.16b, b0.16b; \ + rev32 b1.16b, b1.16b; \ + SM4_CRYPT_BLK2_BE(b0, b1); + +#define SM4_CRYPT_BLK4_BE(b0, b1, b2, b3) \ + sm4e b0.4s, v24.4s; \ + sm4e b1.4s, v24.4s; \ + sm4e b2.4s, v24.4s; \ + sm4e b3.4s, v24.4s; \ + sm4e b0.4s, v25.4s; \ + sm4e b1.4s, v25.4s; \ + sm4e b2.4s, v25.4s; \ + sm4e b3.4s, v25.4s; \ + sm4e b0.4s, v26.4s; \ + sm4e b1.4s, v26.4s; \ + sm4e b2.4s, v26.4s; \ + sm4e b3.4s, v26.4s; \ + sm4e b0.4s, v27.4s; \ + sm4e b1.4s, v27.4s; \ + sm4e b2.4s, v27.4s; \ + sm4e b3.4s, v27.4s; \ + sm4e b0.4s, v28.4s; \ + sm4e b1.4s, v28.4s; \ + sm4e b2.4s, v28.4s; \ + sm4e b3.4s, v28.4s; \ + sm4e b0.4s, v29.4s; \ + sm4e b1.4s, v29.4s; \ + sm4e b2.4s, v29.4s; \ + sm4e b3.4s, v29.4s; \ + sm4e b0.4s, v30.4s; \ + sm4e b1.4s, v30.4s; \ + sm4e b2.4s, v30.4s; \ + sm4e b3.4s, v30.4s; \ + sm4e b0.4s, v31.4s; \ + sm4e b1.4s, v31.4s; \ + sm4e b2.4s, v31.4s; \ + sm4e b3.4s, v31.4s; \ + rev64 b0.4s, b0.4s; \ + rev64 b1.4s, b1.4s; \ + rev64 b2.4s, b2.4s; \ + rev64 b3.4s, b3.4s; \ + ext b0.16b, b0.16b, b0.16b, #8; \ + ext b1.16b, b1.16b, b1.16b, #8; \ + ext b2.16b, b2.16b, b2.16b, #8; \ + ext b3.16b, b3.16b, b3.16b, #8; \ + rev32 b0.16b, b0.16b; \ + rev32 b1.16b, b1.16b; \ + rev32 b2.16b, b2.16b; \ + rev32 b3.16b, b3.16b; + +#define SM4_CRYPT_BLK4(b0, b1, b2, b3) \ + rev32 b0.16b, b0.16b; \ + rev32 b1.16b, b1.16b; \ + rev32 b2.16b, b2.16b; \ + rev32 b3.16b, b3.16b; \ + SM4_CRYPT_BLK4_BE(b0, b1, b2, b3); + +#define SM4_CRYPT_BLK8_BE(b0, b1, b2, b3, b4, b5, b6, b7) \ + sm4e b0.4s, v24.4s; \ + sm4e b1.4s, v24.4s; \ + sm4e b2.4s, v24.4s; \ + sm4e b3.4s, v24.4s; \ + sm4e b4.4s, v24.4s; \ + sm4e b5.4s, v24.4s; \ + sm4e b6.4s, v24.4s; \ + sm4e b7.4s, v24.4s; \ + sm4e b0.4s, v25.4s; \ + sm4e b1.4s, v25.4s; \ + sm4e b2.4s, v25.4s; \ + sm4e b3.4s, v25.4s; \ + sm4e b4.4s, v25.4s; \ + sm4e b5.4s, v25.4s; \ + sm4e b6.4s, v25.4s; \ + sm4e b7.4s, v25.4s; \ + sm4e b0.4s, v26.4s; \ + sm4e b1.4s, v26.4s; \ + sm4e b2.4s, v26.4s; \ + sm4e b3.4s, v26.4s; \ + sm4e b4.4s, v26.4s; \ + sm4e b5.4s, v26.4s; \ + sm4e b6.4s, v26.4s; \ + sm4e b7.4s, v26.4s; \ + sm4e b0.4s, v27.4s; \ + sm4e b1.4s, v27.4s; \ + sm4e b2.4s, v27.4s; \ + sm4e b3.4s, v27.4s; \ + sm4e b4.4s, v27.4s; \ + sm4e b5.4s, v27.4s; \ + sm4e b6.4s, v27.4s; \ + sm4e b7.4s, v27.4s; \ + sm4e b0.4s, v28.4s; \ + sm4e b1.4s, v28.4s; \ + sm4e b2.4s, v28.4s; \ + sm4e b3.4s, v28.4s; \ + sm4e b4.4s, v28.4s; \ + sm4e b5.4s, v28.4s; \ + sm4e b6.4s, v28.4s; \ + sm4e b7.4s, v28.4s; \ + sm4e b0.4s, v29.4s; \ + sm4e b1.4s, v29.4s; \ + sm4e b2.4s, v29.4s; \ + sm4e b3.4s, v29.4s; \ + sm4e b4.4s, v29.4s; \ + sm4e b5.4s, v29.4s; \ + sm4e b6.4s, v29.4s; \ + sm4e b7.4s, v29.4s; \ + sm4e b0.4s, v30.4s; \ + sm4e b1.4s, v30.4s; \ + sm4e b2.4s, v30.4s; \ + sm4e b3.4s, v30.4s; \ + sm4e b4.4s, v30.4s; \ + sm4e b5.4s, v30.4s; \ + sm4e b6.4s, v30.4s; \ + sm4e b7.4s, v30.4s; \ + sm4e b0.4s, v31.4s; \ + sm4e b1.4s, v31.4s; \ + sm4e b2.4s, v31.4s; \ + sm4e b3.4s, v31.4s; \ + sm4e b4.4s, v31.4s; \ + sm4e b5.4s, v31.4s; \ + sm4e b6.4s, v31.4s; \ + sm4e b7.4s, v31.4s; \ + rev64 b0.4s, b0.4s; \ + rev64 b1.4s, b1.4s; \ + rev64 b2.4s, b2.4s; \ + rev64 b3.4s, b3.4s; \ + rev64 b4.4s, b4.4s; \ + rev64 b5.4s, b5.4s; \ + rev64 b6.4s, b6.4s; \ + rev64 b7.4s, b7.4s; \ + ext b0.16b, b0.16b, b0.16b, #8; \ + ext b1.16b, b1.16b, b1.16b, #8; \ + ext b2.16b, b2.16b, b2.16b, #8; \ + ext b3.16b, b3.16b, b3.16b, #8; \ + ext b4.16b, b4.16b, b4.16b, #8; \ + ext b5.16b, b5.16b, b5.16b, #8; \ + ext b6.16b, b6.16b, b6.16b, #8; \ + ext b7.16b, b7.16b, b7.16b, #8; \ + rev32 b0.16b, b0.16b; \ + rev32 b1.16b, b1.16b; \ + rev32 b2.16b, b2.16b; \ + rev32 b3.16b, b3.16b; \ + rev32 b4.16b, b4.16b; \ + rev32 b5.16b, b5.16b; \ + rev32 b6.16b, b6.16b; \ + rev32 b7.16b, b7.16b; + +#define SM4_CRYPT_BLK8(b0, b1, b2, b3, b4, b5, b6, b7) \ + rev32 b0.16b, b0.16b; \ + rev32 b1.16b, b1.16b; \ + rev32 b2.16b, b2.16b; \ + rev32 b3.16b, b3.16b; \ + rev32 b4.16b, b4.16b; \ + rev32 b5.16b, b5.16b; \ + rev32 b6.16b, b6.16b; \ + rev32 b7.16b, b7.16b; \ + SM4_CRYPT_BLK8_BE(b0, b1, b2, b3, b4, b5, b6, b7); diff --git a/arch/arm64/crypto/sm4-ce-core.S b/arch/arm64/crypto/sm4-ce-core.S index 934e0f093279..41fc745a8528 100644 --- a/arch/arm64/crypto/sm4-ce-core.S +++ b/arch/arm64/crypto/sm4-ce-core.S @@ -10,10 +10,12 @@ #include #include +#include "sm4-ce-asm.h" .arch armv8-a+crypto -.irp b, 0, 1, 2, 3, 4, 5, 6, 7, 16, 20, 24, 25, 26, 27, 28, 29, 30, 31 +.irp b, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, \ + 20, 24, 25, 26, 27, 28, 29, 30, 31 .set .Lv\b\().4s, \b .endr @@ -34,174 +36,6 @@ #define RIV v20 -/* Helper macros. */ - -#define PREPARE \ - ld1 {v24.16b-v27.16b}, [x0], #64; \ - ld1 {v28.16b-v31.16b}, [x0]; - -#define SM4_CRYPT_BLK(b0) \ - rev32 b0.16b, b0.16b; \ - sm4e b0.4s, v24.4s; \ - sm4e b0.4s, v25.4s; \ - sm4e b0.4s, v26.4s; \ - sm4e b0.4s, v27.4s; \ - sm4e b0.4s, v28.4s; \ - sm4e b0.4s, v29.4s; \ - sm4e b0.4s, v30.4s; \ - sm4e b0.4s, v31.4s; \ - rev64 b0.4s, b0.4s; \ - ext b0.16b, b0.16b, b0.16b, #8; \ - rev32 b0.16b, b0.16b; - -#define SM4_CRYPT_BLK4(b0, b1, b2, b3) \ - rev32 b0.16b, b0.16b; \ - rev32 b1.16b, b1.16b; \ - rev32 b2.16b, b2.16b; \ - rev32 b3.16b, b3.16b; \ - sm4e b0.4s, v24.4s; \ - sm4e b1.4s, v24.4s; \ - sm4e b2.4s, v24.4s; \ - sm4e b3.4s, v24.4s; \ - sm4e b0.4s, v25.4s; \ - sm4e b1.4s, v25.4s; \ - sm4e b2.4s, v25.4s; \ - sm4e b3.4s, v25.4s; \ - sm4e b0.4s, v26.4s; \ - sm4e b1.4s, v26.4s; \ - sm4e b2.4s, v26.4s; \ - sm4e b3.4s, v26.4s; \ - sm4e b0.4s, v27.4s; \ - sm4e b1.4s, v27.4s; \ - sm4e b2.4s, v27.4s; \ - sm4e b3.4s, v27.4s; \ - sm4e b0.4s, v28.4s; \ - sm4e b1.4s, v28.4s; \ - sm4e b2.4s, v28.4s; \ - sm4e b3.4s, v28.4s; \ - sm4e b0.4s, v29.4s; \ - sm4e b1.4s, v29.4s; \ - sm4e b2.4s, v29.4s; \ - sm4e b3.4s, v29.4s; \ - sm4e b0.4s, v30.4s; \ - sm4e b1.4s, v30.4s; \ - sm4e b2.4s, v30.4s; \ - sm4e b3.4s, v30.4s; \ - sm4e b0.4s, v31.4s; \ - sm4e b1.4s, v31.4s; \ - sm4e b2.4s, v31.4s; \ - sm4e b3.4s, v31.4s; \ - rev64 b0.4s, b0.4s; \ - rev64 b1.4s, b1.4s; \ - rev64 b2.4s, b2.4s; \ - rev64 b3.4s, b3.4s; \ - ext b0.16b, b0.16b, b0.16b, #8; \ - ext b1.16b, b1.16b, b1.16b, #8; \ - ext b2.16b, b2.16b, b2.16b, #8; \ - ext b3.16b, b3.16b, b3.16b, #8; \ - rev32 b0.16b, b0.16b; \ - rev32 b1.16b, b1.16b; \ - rev32 b2.16b, b2.16b; \ - rev32 b3.16b, b3.16b; - -#define SM4_CRYPT_BLK8(b0, b1, b2, b3, b4, b5, b6, b7) \ - rev32 b0.16b, b0.16b; \ - rev32 b1.16b, b1.16b; \ - rev32 b2.16b, b2.16b; \ - rev32 b3.16b, b3.16b; \ - rev32 b4.16b, b4.16b; \ - rev32 b5.16b, b5.16b; \ - rev32 b6.16b, b6.16b; \ - rev32 b7.16b, b7.16b; \ - sm4e b0.4s, v24.4s; \ - sm4e b1.4s, v24.4s; \ - sm4e b2.4s, v24.4s; \ - sm4e b3.4s, v24.4s; \ - sm4e b4.4s, v24.4s; \ - sm4e b5.4s, v24.4s; \ - sm4e b6.4s, v24.4s; \ - sm4e b7.4s, v24.4s; \ - sm4e b0.4s, v25.4s; \ - sm4e b1.4s, v25.4s; \ - sm4e b2.4s, v25.4s; \ - sm4e b3.4s, v25.4s; \ - sm4e b4.4s, v25.4s; \ - sm4e b5.4s, v25.4s; \ - sm4e b6.4s, v25.4s; \ - sm4e b7.4s, v25.4s; \ - sm4e b0.4s, v26.4s; \ - sm4e b1.4s, v26.4s; \ - sm4e b2.4s, v26.4s; \ - sm4e b3.4s, v26.4s; \ - sm4e b4.4s, v26.4s; \ - sm4e b5.4s, v26.4s; \ - sm4e b6.4s, v26.4s; \ - sm4e b7.4s, v26.4s; \ - sm4e b0.4s, v27.4s; \ - sm4e b1.4s, v27.4s; \ - sm4e b2.4s, v27.4s; \ - sm4e b3.4s, v27.4s; \ - sm4e b4.4s, v27.4s; \ - sm4e b5.4s, v27.4s; \ - sm4e b6.4s, v27.4s; \ - sm4e b7.4s, v27.4s; \ - sm4e b0.4s, v28.4s; \ - sm4e b1.4s, v28.4s; \ - sm4e b2.4s, v28.4s; \ - sm4e b3.4s, v28.4s; \ - sm4e b4.4s, v28.4s; \ - sm4e b5.4s, v28.4s; \ - sm4e b6.4s, v28.4s; \ - sm4e b7.4s, v28.4s; \ - sm4e b0.4s, v29.4s; \ - sm4e b1.4s, v29.4s; \ - sm4e b2.4s, v29.4s; \ - sm4e b3.4s, v29.4s; \ - sm4e b4.4s, v29.4s; \ - sm4e b5.4s, v29.4s; \ - sm4e b6.4s, v29.4s; \ - sm4e b7.4s, v29.4s; \ - sm4e b0.4s, v30.4s; \ - sm4e b1.4s, v30.4s; \ - sm4e b2.4s, v30.4s; \ - sm4e b3.4s, v30.4s; \ - sm4e b4.4s, v30.4s; \ - sm4e b5.4s, v30.4s; \ - sm4e b6.4s, v30.4s; \ - sm4e b7.4s, v30.4s; \ - sm4e b0.4s, v31.4s; \ - sm4e b1.4s, v31.4s; \ - sm4e b2.4s, v31.4s; \ - sm4e b3.4s, v31.4s; \ - sm4e b4.4s, v31.4s; \ - sm4e b5.4s, v31.4s; \ - sm4e b6.4s, v31.4s; \ - sm4e b7.4s, v31.4s; \ - rev64 b0.4s, b0.4s; \ - rev64 b1.4s, b1.4s; \ - rev64 b2.4s, b2.4s; \ - rev64 b3.4s, b3.4s; \ - rev64 b4.4s, b4.4s; \ - rev64 b5.4s, b5.4s; \ - rev64 b6.4s, b6.4s; \ - rev64 b7.4s, b7.4s; \ - ext b0.16b, b0.16b, b0.16b, #8; \ - ext b1.16b, b1.16b, b1.16b, #8; \ - ext b2.16b, b2.16b, b2.16b, #8; \ - ext b3.16b, b3.16b, b3.16b, #8; \ - ext b4.16b, b4.16b, b4.16b, #8; \ - ext b5.16b, b5.16b, b5.16b, #8; \ - ext b6.16b, b6.16b, b6.16b, #8; \ - ext b7.16b, b7.16b, b7.16b, #8; \ - rev32 b0.16b, b0.16b; \ - rev32 b1.16b, b1.16b; \ - rev32 b2.16b, b2.16b; \ - rev32 b3.16b, b3.16b; \ - rev32 b4.16b, b4.16b; \ - rev32 b5.16b, b5.16b; \ - rev32 b6.16b, b6.16b; \ - rev32 b7.16b, b7.16b; - .align 3 SYM_FUNC_START(sm4_ce_expand_key) @@ -268,7 +102,7 @@ SYM_FUNC_START(sm4_ce_crypt_block) * x1: dst * x2: src */ - PREPARE; + SM4_PREPARE(x0) ld1 {v0.16b}, [x2]; SM4_CRYPT_BLK(v0); @@ -285,7 +119,7 @@ SYM_FUNC_START(sm4_ce_crypt) * x2: src * w3: nblocks */ - PREPARE; + SM4_PREPARE(x0) .Lcrypt_loop_blk: sub w3, w3, #8; @@ -337,26 +171,50 @@ SYM_FUNC_START(sm4_ce_cbc_enc) * x3: iv (big endian, 128 bit) * w4: nblocks */ - PREPARE; + SM4_PREPARE(x0) + + ld1 {RIV.16b}, [x3] + +.Lcbc_enc_loop_4x: + cmp w4, #4 + blt .Lcbc_enc_loop_1x + + sub w4, w4, #4 - ld1 {RIV.16b}, [x3]; + ld1 {v0.16b-v3.16b}, [x2], #64 -.Lcbc_enc_loop: - sub w4, w4, #1; + eor v0.16b, v0.16b, RIV.16b + SM4_CRYPT_BLK(v0) + eor v1.16b, v1.16b, v0.16b + SM4_CRYPT_BLK(v1) + eor v2.16b, v2.16b, v1.16b + SM4_CRYPT_BLK(v2) + eor v3.16b, v3.16b, v2.16b + SM4_CRYPT_BLK(v3) - ld1 {RTMP0.16b}, [x2], #16; - eor RIV.16b, RIV.16b, RTMP0.16b; + st1 {v0.16b-v3.16b}, [x1], #64 + mov RIV.16b, v3.16b - SM4_CRYPT_BLK(RIV); + cbz w4, .Lcbc_enc_end + b .Lcbc_enc_loop_4x - st1 {RIV.16b}, [x1], #16; +.Lcbc_enc_loop_1x: + sub w4, w4, #1 - cbnz w4, .Lcbc_enc_loop; + ld1 {v0.16b}, [x2], #16 + eor RIV.16b, RIV.16b, v0.16b + SM4_CRYPT_BLK(RIV) + + st1 {RIV.16b}, [x1], #16 + + cbnz w4, .Lcbc_enc_loop_1x + +.Lcbc_enc_end: /* store new IV */ - st1 {RIV.16b}, [x3]; + st1 {RIV.16b}, [x3] - ret; + ret SYM_FUNC_END(sm4_ce_cbc_enc) .align 3 @@ -368,79 +226,93 @@ SYM_FUNC_START(sm4_ce_cbc_dec) * x3: iv (big endian, 128 bit) * w4: nblocks */ - PREPARE; + SM4_PREPARE(x0) - ld1 {RIV.16b}, [x3]; + ld1 {RIV.16b}, [x3] -.Lcbc_loop_blk: - sub w4, w4, #8; - tbnz w4, #31, .Lcbc_tail8; +.Lcbc_dec_loop_8x: + sub w4, w4, #8 + tbnz w4, #31, .Lcbc_dec_4x - ld1 {v0.16b-v3.16b}, [x2], #64; - ld1 {v4.16b-v7.16b}, [x2]; + ld1 {v0.16b-v3.16b}, [x2], #64 + ld1 {v4.16b-v7.16b}, [x2], #64 - SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7); + rev32 v8.16b, v0.16b + rev32 v9.16b, v1.16b + rev32 v10.16b, v2.16b + rev32 v11.16b, v3.16b + rev32 v12.16b, v4.16b + rev32 v13.16b, v5.16b + rev32 v14.16b, v6.16b + rev32 v15.16b, v7.16b - sub x2, x2, #64; - eor v0.16b, v0.16b, RIV.16b; - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v1.16b, v1.16b, RTMP0.16b; - eor v2.16b, v2.16b, RTMP1.16b; - eor v3.16b, v3.16b, RTMP2.16b; - st1 {v0.16b-v3.16b}, [x1], #64; + SM4_CRYPT_BLK8_BE(v8, v9, v10, v11, v12, v13, v14, v15) - eor v4.16b, v4.16b, RTMP3.16b; - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v5.16b, v5.16b, RTMP0.16b; - eor v6.16b, v6.16b, RTMP1.16b; - eor v7.16b, v7.16b, RTMP2.16b; + eor v8.16b, v8.16b, RIV.16b + eor v9.16b, v9.16b, v0.16b + eor v10.16b, v10.16b, v1.16b + eor v11.16b, v11.16b, v2.16b + eor v12.16b, v12.16b, v3.16b + eor v13.16b, v13.16b, v4.16b + eor v14.16b, v14.16b, v5.16b + eor v15.16b, v15.16b, v6.16b - mov RIV.16b, RTMP3.16b; - st1 {v4.16b-v7.16b}, [x1], #64; + st1 {v8.16b-v11.16b}, [x1], #64 + st1 {v12.16b-v15.16b}, [x1], #64 - cbz w4, .Lcbc_end; - b .Lcbc_loop_blk; + mov RIV.16b, v7.16b -.Lcbc_tail8: - add w4, w4, #8; - cmp w4, #4; - blt .Lcbc_tail4; + cbz w4, .Lcbc_dec_end + b .Lcbc_dec_loop_8x - sub w4, w4, #4; +.Lcbc_dec_4x: + add w4, w4, #8 + cmp w4, #4 + blt .Lcbc_dec_loop_1x - ld1 {v0.16b-v3.16b}, [x2]; + sub w4, w4, #4 - SM4_CRYPT_BLK4(v0, v1, v2, v3); + ld1 {v0.16b-v3.16b}, [x2], #64 - eor v0.16b, v0.16b, RIV.16b; - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v1.16b, v1.16b, RTMP0.16b; - eor v2.16b, v2.16b, RTMP1.16b; - eor v3.16b, v3.16b, RTMP2.16b; + rev32 v8.16b, v0.16b + rev32 v9.16b, v1.16b + rev32 v10.16b, v2.16b + rev32 v11.16b, v3.16b - mov RIV.16b, RTMP3.16b; - st1 {v0.16b-v3.16b}, [x1], #64; + SM4_CRYPT_BLK4_BE(v8, v9, v10, v11) - cbz w4, .Lcbc_end; + eor v8.16b, v8.16b, RIV.16b + eor v9.16b, v9.16b, v0.16b + eor v10.16b, v10.16b, v1.16b + eor v11.16b, v11.16b, v2.16b -.Lcbc_tail4: - sub w4, w4, #1; + st1 {v8.16b-v11.16b}, [x1], #64 - ld1 {v0.16b}, [x2]; + mov RIV.16b, v3.16b - SM4_CRYPT_BLK(v0); + cbz w4, .Lcbc_dec_end - eor v0.16b, v0.16b, RIV.16b; - ld1 {RIV.16b}, [x2], #16; - st1 {v0.16b}, [x1], #16; +.Lcbc_dec_loop_1x: + sub w4, w4, #1 + + ld1 {v0.16b}, [x2], #16 + + rev32 v8.16b, v0.16b + + SM4_CRYPT_BLK_BE(v8) - cbnz w4, .Lcbc_tail4; + eor v8.16b, v8.16b, RIV.16b + st1 {v8.16b}, [x1], #16 -.Lcbc_end: + mov RIV.16b, v0.16b + + cbnz w4, .Lcbc_dec_loop_1x + +.Lcbc_dec_end: /* store new IV */ - st1 {RIV.16b}, [x3]; + st1 {RIV.16b}, [x3] - ret; + ret SYM_FUNC_END(sm4_ce_cbc_dec) .align 3 @@ -452,25 +324,57 @@ SYM_FUNC_START(sm4_ce_cfb_enc) * x3: iv (big endian, 128 bit) * w4: nblocks */ - PREPARE; + SM4_PREPARE(x0) + + ld1 {RIV.16b}, [x3] + +.Lcfb_enc_loop_4x: + cmp w4, #4 + blt .Lcfb_enc_loop_1x + + sub w4, w4, #4 + + ld1 {v0.16b-v3.16b}, [x2], #64 + + rev32 v8.16b, RIV.16b + SM4_CRYPT_BLK_BE(v8) + eor v0.16b, v0.16b, v8.16b + + rev32 v8.16b, v0.16b + SM4_CRYPT_BLK_BE(v8) + eor v1.16b, v1.16b, v8.16b + + rev32 v8.16b, v1.16b + SM4_CRYPT_BLK_BE(v8) + eor v2.16b, v2.16b, v8.16b + + rev32 v8.16b, v2.16b + SM4_CRYPT_BLK_BE(v8) + eor v3.16b, v3.16b, v8.16b - ld1 {RIV.16b}, [x3]; + st1 {v0.16b-v3.16b}, [x1], #64 + mov RIV.16b, v3.16b -.Lcfb_enc_loop: - sub w4, w4, #1; + cbz w4, .Lcfb_enc_end + b .Lcfb_enc_loop_4x - SM4_CRYPT_BLK(RIV); +.Lcfb_enc_loop_1x: + sub w4, w4, #1 - ld1 {RTMP0.16b}, [x2], #16; - eor RIV.16b, RIV.16b, RTMP0.16b; - st1 {RIV.16b}, [x1], #16; + ld1 {v0.16b}, [x2], #16 - cbnz w4, .Lcfb_enc_loop; + SM4_CRYPT_BLK(RIV) + eor RIV.16b, RIV.16b, v0.16b + st1 {RIV.16b}, [x1], #16 + + cbnz w4, .Lcfb_enc_loop_1x + +.Lcfb_enc_end: /* store new IV */ - st1 {RIV.16b}, [x3]; + st1 {RIV.16b}, [x3] - ret; + ret SYM_FUNC_END(sm4_ce_cfb_enc) .align 3 @@ -482,79 +386,91 @@ SYM_FUNC_START(sm4_ce_cfb_dec) * x3: iv (big endian, 128 bit) * w4: nblocks */ - PREPARE; + SM4_PREPARE(x0) - ld1 {v0.16b}, [x3]; + ld1 {RIV.16b}, [x3] -.Lcfb_loop_blk: - sub w4, w4, #8; - tbnz w4, #31, .Lcfb_tail8; +.Lcfb_dec_loop_8x: + sub w4, w4, #8 + tbnz w4, #31, .Lcfb_dec_4x - ld1 {v1.16b, v2.16b, v3.16b}, [x2], #48; - ld1 {v4.16b-v7.16b}, [x2]; + ld1 {v0.16b-v3.16b}, [x2], #64 + ld1 {v4.16b-v7.16b}, [x2], #64 - SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7); + rev32 v8.16b, RIV.16b + rev32 v9.16b, v0.16b + rev32 v10.16b, v1.16b + rev32 v11.16b, v2.16b + rev32 v12.16b, v3.16b + rev32 v13.16b, v4.16b + rev32 v14.16b, v5.16b + rev32 v15.16b, v6.16b - sub x2, x2, #48; - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v0.16b, v0.16b, RTMP0.16b; - eor v1.16b, v1.16b, RTMP1.16b; - eor v2.16b, v2.16b, RTMP2.16b; - eor v3.16b, v3.16b, RTMP3.16b; - st1 {v0.16b-v3.16b}, [x1], #64; + SM4_CRYPT_BLK8_BE(v8, v9, v10, v11, v12, v13, v14, v15) - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v4.16b, v4.16b, RTMP0.16b; - eor v5.16b, v5.16b, RTMP1.16b; - eor v6.16b, v6.16b, RTMP2.16b; - eor v7.16b, v7.16b, RTMP3.16b; - st1 {v4.16b-v7.16b}, [x1], #64; + mov RIV.16b, v7.16b - mov v0.16b, RTMP3.16b; + eor v0.16b, v0.16b, v8.16b + eor v1.16b, v1.16b, v9.16b + eor v2.16b, v2.16b, v10.16b + eor v3.16b, v3.16b, v11.16b + eor v4.16b, v4.16b, v12.16b + eor v5.16b, v5.16b, v13.16b + eor v6.16b, v6.16b, v14.16b + eor v7.16b, v7.16b, v15.16b - cbz w4, .Lcfb_end; - b .Lcfb_loop_blk; + st1 {v0.16b-v3.16b}, [x1], #64 + st1 {v4.16b-v7.16b}, [x1], #64 -.Lcfb_tail8: - add w4, w4, #8; - cmp w4, #4; - blt .Lcfb_tail4; + cbz w4, .Lcfb_dec_end + b .Lcfb_dec_loop_8x - sub w4, w4, #4; +.Lcfb_dec_4x: + add w4, w4, #8 + cmp w4, #4 + blt .Lcfb_dec_loop_1x - ld1 {v1.16b, v2.16b, v3.16b}, [x2]; + sub w4, w4, #4 - SM4_CRYPT_BLK4(v0, v1, v2, v3); + ld1 {v0.16b-v3.16b}, [x2], #64 - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v0.16b, v0.16b, RTMP0.16b; - eor v1.16b, v1.16b, RTMP1.16b; - eor v2.16b, v2.16b, RTMP2.16b; - eor v3.16b, v3.16b, RTMP3.16b; - st1 {v0.16b-v3.16b}, [x1], #64; + rev32 v8.16b, RIV.16b + rev32 v9.16b, v0.16b + rev32 v10.16b, v1.16b + rev32 v11.16b, v2.16b - mov v0.16b, RTMP3.16b; + SM4_CRYPT_BLK4_BE(v8, v9, v10, v11) - cbz w4, .Lcfb_end; + mov RIV.16b, v3.16b -.Lcfb_tail4: - sub w4, w4, #1; + eor v0.16b, v0.16b, v8.16b + eor v1.16b, v1.16b, v9.16b + eor v2.16b, v2.16b, v10.16b + eor v3.16b, v3.16b, v11.16b - SM4_CRYPT_BLK(v0); + st1 {v0.16b-v3.16b}, [x1], #64 - ld1 {RTMP0.16b}, [x2], #16; - eor v0.16b, v0.16b, RTMP0.16b; - st1 {v0.16b}, [x1], #16; + cbz w4, .Lcfb_dec_end + +.Lcfb_dec_loop_1x: + sub w4, w4, #1 + + ld1 {v0.16b}, [x2], #16 - mov v0.16b, RTMP0.16b; + SM4_CRYPT_BLK(RIV) - cbnz w4, .Lcfb_tail4; + eor RIV.16b, RIV.16b, v0.16b + st1 {RIV.16b}, [x1], #16 -.Lcfb_end: + mov RIV.16b, v0.16b + + cbnz w4, .Lcfb_dec_loop_1x + +.Lcfb_dec_end: /* store new IV */ - st1 {v0.16b}, [x3]; + st1 {RIV.16b}, [x3] - ret; + ret SYM_FUNC_END(sm4_ce_cfb_dec) .align 3 @@ -566,95 +482,99 @@ SYM_FUNC_START(sm4_ce_ctr_enc) * x3: ctr (big endian, 128 bit) * w4: nblocks */ - PREPARE; + SM4_PREPARE(x0) - ldp x7, x8, [x3]; - rev x7, x7; - rev x8, x8; + ldp x7, x8, [x3] + rev x7, x7 + rev x8, x8 -.Lctr_loop_blk: - sub w4, w4, #8; - tbnz w4, #31, .Lctr_tail8; +.Lctr_loop_8x: + sub w4, w4, #8 + tbnz w4, #31, .Lctr_4x -#define inc_le128(vctr) \ - mov vctr.d[1], x8; \ - mov vctr.d[0], x7; \ - adds x8, x8, #1; \ - adc x7, x7, xzr; \ - rev64 vctr.16b, vctr.16b; +#define inc_le128(vctr) \ + mov vctr.d[1], x8; \ + mov vctr.d[0], x7; \ + adds x8, x8, #1; \ + rev64 vctr.16b, vctr.16b; \ + adc x7, x7, xzr; /* construct CTRs */ - inc_le128(v0); /* +0 */ - inc_le128(v1); /* +1 */ - inc_le128(v2); /* +2 */ - inc_le128(v3); /* +3 */ - inc_le128(v4); /* +4 */ - inc_le128(v5); /* +5 */ - inc_le128(v6); /* +6 */ - inc_le128(v7); /* +7 */ + inc_le128(v0) /* +0 */ + inc_le128(v1) /* +1 */ + inc_le128(v2) /* +2 */ + inc_le128(v3) /* +3 */ + inc_le128(v4) /* +4 */ + inc_le128(v5) /* +5 */ + inc_le128(v6) /* +6 */ + inc_le128(v7) /* +7 */ + + ld1 {v8.16b-v11.16b}, [x2], #64 + ld1 {v12.16b-v15.16b}, [x2], #64 + + SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7) + + eor v0.16b, v0.16b, v8.16b + eor v1.16b, v1.16b, v9.16b + eor v2.16b, v2.16b, v10.16b + eor v3.16b, v3.16b, v11.16b + eor v4.16b, v4.16b, v12.16b + eor v5.16b, v5.16b, v13.16b + eor v6.16b, v6.16b, v14.16b + eor v7.16b, v7.16b, v15.16b + + st1 {v0.16b-v3.16b}, [x1], #64 + st1 {v4.16b-v7.16b}, [x1], #64 + + cbz w4, .Lctr_end + b .Lctr_loop_8x + +.Lctr_4x: + add w4, w4, #8 + cmp w4, #4 + blt .Lctr_loop_1x + + sub w4, w4, #4 - SM4_CRYPT_BLK8(v0, v1, v2, v3, v4, v5, v6, v7); - - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v0.16b, v0.16b, RTMP0.16b; - eor v1.16b, v1.16b, RTMP1.16b; - eor v2.16b, v2.16b, RTMP2.16b; - eor v3.16b, v3.16b, RTMP3.16b; - st1 {v0.16b-v3.16b}, [x1], #64; + /* construct CTRs */ + inc_le128(v0) /* +0 */ + inc_le128(v1) /* +1 */ + inc_le128(v2) /* +2 */ + inc_le128(v3) /* +3 */ - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v4.16b, v4.16b, RTMP0.16b; - eor v5.16b, v5.16b, RTMP1.16b; - eor v6.16b, v6.16b, RTMP2.16b; - eor v7.16b, v7.16b, RTMP3.16b; - st1 {v4.16b-v7.16b}, [x1], #64; + ld1 {v8.16b-v11.16b}, [x2], #64 - cbz w4, .Lctr_end; - b .Lctr_loop_blk; + SM4_CRYPT_BLK4(v0, v1, v2, v3) -.Lctr_tail8: - add w4, w4, #8; - cmp w4, #4; - blt .Lctr_tail4; + eor v0.16b, v0.16b, v8.16b + eor v1.16b, v1.16b, v9.16b + eor v2.16b, v2.16b, v10.16b + eor v3.16b, v3.16b, v11.16b - sub w4, w4, #4; + st1 {v0.16b-v3.16b}, [x1], #64 - /* construct CTRs */ - inc_le128(v0); /* +0 */ - inc_le128(v1); /* +1 */ - inc_le128(v2); /* +2 */ - inc_le128(v3); /* +3 */ + cbz w4, .Lctr_end - SM4_CRYPT_BLK4(v0, v1, v2, v3); - - ld1 {RTMP0.16b-RTMP3.16b}, [x2], #64; - eor v0.16b, v0.16b, RTMP0.16b; - eor v1.16b, v1.16b, RTMP1.16b; - eor v2.16b, v2.16b, RTMP2.16b; - eor v3.16b, v3.16b, RTMP3.16b; - st1 {v0.16b-v3.16b}, [x1], #64; - - cbz w4, .Lctr_end; - -.Lctr_tail4: - sub w4, w4, #1; +.Lctr_loop_1x: + sub w4, w4, #1 /* construct CTRs */ - inc_le128(v0); + inc_le128(v0) - SM4_CRYPT_BLK(v0); + ld1 {v8.16b}, [x2], #16 - ld1 {RTMP0.16b}, [x2], #16; - eor v0.16b, v0.16b, RTMP0.16b; - st1 {v0.16b}, [x1], #16; + SM4_CRYPT_BLK(v0) + + eor v0.16b, v0.16b, v8.16b + st1 {v0.16b}, [x1], #16 - cbnz w4, .Lctr_tail4; + cbnz w4, .Lctr_loop_1x .Lctr_end: /* store new CTR */ - rev x7, x7; - rev x8, x8; - stp x7, x8, [x3]; + rev x7, x7 + rev x8, x8 + stp x7, x8, [x3] - ret; + ret SYM_FUNC_END(sm4_ce_ctr_enc) diff --git a/arch/arm64/crypto/sm4-ce-glue.c b/arch/arm64/crypto/sm4-ce-glue.c index 496d55c0d01a..e56e81b1f35f 100644 --- a/arch/arm64/crypto/sm4-ce-glue.c +++ b/arch/arm64/crypto/sm4-ce-glue.c @@ -26,9 +26,9 @@ asmlinkage void sm4_ce_crypt_block(const u32 *rkey, u8 *dst, const u8 *src); asmlinkage void sm4_ce_crypt(const u32 *rkey, u8 *dst, const u8 *src, unsigned int nblks); asmlinkage void sm4_ce_cbc_enc(const u32 *rkey, u8 *dst, const u8 *src, - u8 *iv, unsigned int nblks); + u8 *iv, unsigned int nblocks); asmlinkage void sm4_ce_cbc_dec(const u32 *rkey, u8 *dst, const u8 *src, - u8 *iv, unsigned int nblks); + u8 *iv, unsigned int nblocks); asmlinkage void sm4_ce_cfb_enc(const u32 *rkey, u8 *dst, const u8 *src, u8 *iv, unsigned int nblks); asmlinkage void sm4_ce_cfb_dec(const u32 *rkey, u8 *dst, const u8 *src, @@ -94,66 +94,56 @@ static int sm4_ecb_decrypt(struct skcipher_request *req) return sm4_ecb_do_crypt(req, ctx->rkey_dec); } -static int sm4_cbc_encrypt(struct skcipher_request *req) +static int sm4_cbc_crypt(struct skcipher_request *req, + struct sm4_ctx *ctx, bool encrypt) { - struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm); struct skcipher_walk walk; unsigned int nbytes; int err; err = skcipher_walk_virt(&walk, req, false); + if (err) + return err; while ((nbytes = walk.nbytes) > 0) { const u8 *src = walk.src.virt.addr; u8 *dst = walk.dst.virt.addr; - unsigned int nblks; + unsigned int nblocks; - kernel_neon_begin(); + nblocks = nbytes / SM4_BLOCK_SIZE; + if (nblocks) { + kernel_neon_begin(); - nblks = BYTES2BLKS(nbytes); - if (nblks) { - sm4_ce_cbc_enc(ctx->rkey_enc, dst, src, walk.iv, nblks); - nbytes -= nblks * SM4_BLOCK_SIZE; - } + if (encrypt) + sm4_ce_cbc_enc(ctx->rkey_enc, dst, src, + walk.iv, nblocks); + else + sm4_ce_cbc_dec(ctx->rkey_dec, dst, src, + walk.iv, nblocks); - kernel_neon_end(); + kernel_neon_end(); + } - err = skcipher_walk_done(&walk, nbytes); + err = skcipher_walk_done(&walk, nbytes % SM4_BLOCK_SIZE); } return err; } -static int sm4_cbc_decrypt(struct skcipher_request *req) +static int sm4_cbc_encrypt(struct skcipher_request *req) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm); - struct skcipher_walk walk; - unsigned int nbytes; - int err; - - err = skcipher_walk_virt(&walk, req, false); - while ((nbytes = walk.nbytes) > 0) { - const u8 *src = walk.src.virt.addr; - u8 *dst = walk.dst.virt.addr; - unsigned int nblks; - - kernel_neon_begin(); - - nblks = BYTES2BLKS(nbytes); - if (nblks) { - sm4_ce_cbc_dec(ctx->rkey_dec, dst, src, walk.iv, nblks); - nbytes -= nblks * SM4_BLOCK_SIZE; - } - - kernel_neon_end(); + return sm4_cbc_crypt(req, ctx, true); +} - err = skcipher_walk_done(&walk, nbytes); - } +static int sm4_cbc_decrypt(struct skcipher_request *req) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); + struct sm4_ctx *ctx = crypto_skcipher_ctx(tfm); - return err; + return sm4_cbc_crypt(req, ctx, false); } static int sm4_cfb_encrypt(struct skcipher_request *req)