From patchwork Thu Apr 9 10:55:41 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 6187441 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 915579F1C4 for ; Thu, 9 Apr 2015 11:02:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E681820373 for ; Thu, 9 Apr 2015 11:02:27 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1CE2C2037C for ; Thu, 9 Apr 2015 11:02:21 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YgABF-0008QZ-25; Thu, 09 Apr 2015 10:59:29 +0000 Received: from mail-wi0-f177.google.com ([209.85.212.177]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YgA8c-0006jY-0l for linux-arm-kernel@lists.infradead.org; Thu, 09 Apr 2015 10:56:47 +0000 Received: by wiaa2 with SMTP id a2so93254216wia.0 for ; Thu, 09 Apr 2015 03:56:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=mc+M/E2qRaSYRH497fuXZukl/eNGUZpjrSCVO6nmVQw=; b=aBID/dma68C8SbWelgA/r3C+f2e8ctpx7R996Wa/LCq1WlmAh89+c92xyUrFV5fI7J vqXk6fOLyh6rztf2vedQjZTBybPe4iLoPZ40ZV1vHvFkOMguB1VEzv5PrHGz4bFlt8F7 ccUUa/I/hPA8CA0r/Mr9D9xSk9geUqa4BReA1uqRyoMF1fhOVUZlb6Vrlmqegw+g1tD0 4kQh0YfuwfqhcyuXVW+wJFDIMseGiM0nQhFVL0St0VsKyAAMjFVubLsN5rxQDkGq01tb gAfVRDF9fcfp9v04mnlBUjTLPUmUP5ygUwmhCykeqpS6uljBVsg3P+efmUwFDBIxl8PV n3uw== X-Gm-Message-State: ALoCoQnr0ilAdyfDp4DVgDFvapYn9oRZGKjkGRzMWRc4XnEJPQZLqAq2q+q7QzhIAFBq78sjFlL5 X-Received: by 10.180.74.37 with SMTP id q5mr5137198wiv.59.1428576983830; Thu, 09 Apr 2015 03:56:23 -0700 (PDT) Received: from ards-macbook-pro.local ([90.174.5.113]) by mx.google.com with ESMTPSA id b10sm2192186wiz.9.2015.04.09.03.56.21 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 09 Apr 2015 03:56:23 -0700 (PDT) From: Ard Biesheuvel To: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, herbert@gondor.apana.org.au, samitolvanen@google.com, jussi.kivilinna@iki.fi Subject: [PATCH v4 09/16] crypto/arm: move SHA-1 ARMv8 implementation to base layer Date: Thu, 9 Apr 2015 12:55:41 +0200 Message-Id: <1428576948-23863-10-git-send-email-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1428576948-23863-1-git-send-email-ard.biesheuvel@linaro.org> References: <1428576948-23863-1-git-send-email-ard.biesheuvel@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150409_035646_274023_90C275CA X-CRM114-Status: GOOD ( 16.92 ) X-Spam-Score: -0.7 (/) Cc: stockhausen@collogia.de, Ard Biesheuvel X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 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+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This removes all the boilerplate from the existing implementation, and replaces it with calls into the base layer. Signed-off-by: Ard Biesheuvel --- arch/arm/crypto/Kconfig | 1 - arch/arm/crypto/sha1-ce-core.S | 23 +++------ arch/arm/crypto/sha1-ce-glue.c | 107 ++++++++++------------------------------- 3 files changed, 33 insertions(+), 98 deletions(-) diff --git a/arch/arm/crypto/Kconfig b/arch/arm/crypto/Kconfig index 458729d2ce22..5ed98bc6f95d 100644 --- a/arch/arm/crypto/Kconfig +++ b/arch/arm/crypto/Kconfig @@ -31,7 +31,6 @@ config CRYPTO_SHA1_ARM_CE tristate "SHA1 digest algorithm (ARM v8 Crypto Extensions)" depends on KERNEL_MODE_NEON select CRYPTO_SHA1_ARM - select CRYPTO_SHA1 select CRYPTO_HASH help SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented diff --git a/arch/arm/crypto/sha1-ce-core.S b/arch/arm/crypto/sha1-ce-core.S index 4aad520935d8..b623f51ccbcf 100644 --- a/arch/arm/crypto/sha1-ce-core.S +++ b/arch/arm/crypto/sha1-ce-core.S @@ -61,8 +61,8 @@ .word 0xca62c1d6, 0xca62c1d6, 0xca62c1d6, 0xca62c1d6 /* - * void sha1_ce_transform(int blocks, u8 const *src, u32 *state, - * u8 *head); + * void sha1_ce_transform(struct sha1_state *sst, u8 const *src, + * int blocks); */ ENTRY(sha1_ce_transform) /* load round constants */ @@ -71,23 +71,14 @@ ENTRY(sha1_ce_transform) vld1.32 {k2-k3}, [ip, :128] /* load state */ - vld1.32 {dga}, [r2] - vldr dgbs, [r2, #16] - - /* load partial input (if supplied) */ - teq r3, #0 - beq 0f - vld1.32 {q8-q9}, [r3]! - vld1.32 {q10-q11}, [r3] - teq r0, #0 - b 1f + vld1.32 {dga}, [r0] + vldr dgbs, [r0, #16] /* load input */ 0: vld1.32 {q8-q9}, [r1]! vld1.32 {q10-q11}, [r1]! - subs r0, r0, #1 + subs r2, r2, #1 -1: #ifndef CONFIG_CPU_BIG_ENDIAN vrev32.8 q8, q8 vrev32.8 q9, q9 @@ -128,7 +119,7 @@ ENTRY(sha1_ce_transform) bne 0b /* store new state */ - vst1.32 {dga}, [r2] - vstr dgbs, [r2, #16] + vst1.32 {dga}, [r0] + vstr dgbs, [r0, #16] bx lr ENDPROC(sha1_ce_transform) diff --git a/arch/arm/crypto/sha1-ce-glue.c b/arch/arm/crypto/sha1-ce-glue.c index e93b24c1af1f..80bc2fcd241a 100644 --- a/arch/arm/crypto/sha1-ce-glue.c +++ b/arch/arm/crypto/sha1-ce-glue.c @@ -10,13 +10,13 @@ #include #include +#include #include #include #include #include #include -#include #include "sha1.h" @@ -24,107 +24,52 @@ MODULE_DESCRIPTION("SHA1 secure hash using ARMv8 Crypto Extensions"); MODULE_AUTHOR("Ard Biesheuvel "); MODULE_LICENSE("GPL v2"); -asmlinkage void sha1_ce_transform(int blocks, u8 const *src, u32 *state, - u8 *head); +asmlinkage void sha1_ce_transform(struct sha1_state *sst, u8 const *src, + int blocks); -static int sha1_init(struct shash_desc *desc) +static int sha1_ce_update(struct shash_desc *desc, const u8 *data, + unsigned int len) { struct sha1_state *sctx = shash_desc_ctx(desc); - *sctx = (struct sha1_state){ - .state = { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 }, - }; - return 0; -} - -static int sha1_update(struct shash_desc *desc, const u8 *data, - unsigned int len) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - unsigned int partial; - - if (!may_use_simd()) + if (!may_use_simd() || + (sctx->count % SHA1_BLOCK_SIZE) + len < SHA1_BLOCK_SIZE) return sha1_update_arm(desc, data, len); - partial = sctx->count % SHA1_BLOCK_SIZE; - sctx->count += len; - - if ((partial + len) >= SHA1_BLOCK_SIZE) { - int blocks; + kernel_neon_begin(); + sha1_base_do_update(desc, data, len, sha1_ce_transform); + kernel_neon_end(); - if (partial) { - int p = SHA1_BLOCK_SIZE - partial; - - memcpy(sctx->buffer + partial, data, p); - data += p; - len -= p; - } - - blocks = len / SHA1_BLOCK_SIZE; - len %= SHA1_BLOCK_SIZE; - - kernel_neon_begin(); - sha1_ce_transform(blocks, data, sctx->state, - partial ? sctx->buffer : NULL); - kernel_neon_end(); - - data += blocks * SHA1_BLOCK_SIZE; - partial = 0; - } - if (len) - memcpy(sctx->buffer + partial, data, len); return 0; } -static int sha1_final(struct shash_desc *desc, u8 *out) +static int sha1_ce_finup(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out) { - static const u8 padding[SHA1_BLOCK_SIZE] = { 0x80, }; - - struct sha1_state *sctx = shash_desc_ctx(desc); - __be64 bits = cpu_to_be64(sctx->count << 3); - __be32 *dst = (__be32 *)out; - int i; - - u32 padlen = SHA1_BLOCK_SIZE - - ((sctx->count + sizeof(bits)) % SHA1_BLOCK_SIZE); - - sha1_update(desc, padding, padlen); - sha1_update(desc, (const u8 *)&bits, sizeof(bits)); - - for (i = 0; i < SHA1_DIGEST_SIZE / sizeof(__be32); i++) - put_unaligned_be32(sctx->state[i], dst++); - - *sctx = (struct sha1_state){}; - return 0; -} + if (!may_use_simd()) + return sha1_finup_arm(desc, data, len, out); -static int sha1_export(struct shash_desc *desc, void *out) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - struct sha1_state *dst = out; + kernel_neon_begin(); + if (len) + sha1_base_do_update(desc, data, len, sha1_ce_transform); + sha1_base_do_finalize(desc, sha1_ce_transform); + kernel_neon_end(); - *dst = *sctx; - return 0; + return sha1_base_finish(desc, out); } -static int sha1_import(struct shash_desc *desc, const void *in) +static int sha1_ce_final(struct shash_desc *desc, u8 *out) { - struct sha1_state *sctx = shash_desc_ctx(desc); - struct sha1_state const *src = in; - - *sctx = *src; - return 0; + return sha1_ce_finup(desc, NULL, 0, out); } static struct shash_alg alg = { - .init = sha1_init, - .update = sha1_update, - .final = sha1_final, - .export = sha1_export, - .import = sha1_import, + .init = sha1_base_init, + .update = sha1_ce_update, + .final = sha1_ce_final, + .finup = sha1_ce_finup, .descsize = sizeof(struct sha1_state), .digestsize = SHA1_DIGEST_SIZE, - .statesize = sizeof(struct sha1_state), .base = { .cra_name = "sha1", .cra_driver_name = "sha1-ce",