From patchwork Mon Dec 2 01:20:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 846735 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CB5701C6BE; Mon, 2 Dec 2024 01:21:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102489; cv=none; b=acJyFgdNQPtNoTi9oH4kLgM6mDK/HieeqtPc6v+PfYEe7ix0zEs0gaP/5T8JGwR3o1LZzbr0fPhR5Xd6N4od+CRQvMONQVSojKoTQe+zPMwgyI4TjI46KjK6RVXqdtDZb1Dq5tEdgaaFilE7GE6BlbHdlTtTP+XkpvaKb+HpMRI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102489; c=relaxed/simple; bh=DVKfdgkx+XQWnXd7S0Vc0JfNUBLYmfwnEAvdzQ4yAyk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nDD0hCxJ3e+L5Hfyijy+k1Jy12WXXAsQd+ZeT7q1ieCRZ4i3dbU+Xe3NdI9DF4xfNYvVcLfZd0PIyEu7swSsuXtXsSl4iDfUB79S5GBtbvR/rX8/yP6Bhb2t99ryAUPu8KdfXpbrJSEAaWPUSMTiX65TBMOf38/wAd8RiGFQ1rU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=FPlVWXqS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="FPlVWXqS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1DE92C4CEDC; Mon, 2 Dec 2024 01:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733102489; bh=DVKfdgkx+XQWnXd7S0Vc0JfNUBLYmfwnEAvdzQ4yAyk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FPlVWXqSkitqAzqYhZ2GDIeWs0qQ4N6kOao+XaK539fPu2WgSyqqKAjXzyRSCKiMX R13j+UAzuSqDFtPj+ykjxZQz1L+UsaMOfvu3G71McAVWhdhIQqB3n3uIcm49B2yzWE KUiPwbMfHNoK0U+ELSx7KLDkI+zYee5SkLXeyvDt09tJ0ws8Hs4l43ZR0SqxdqsVUl gJ9xelTxBnb8hVsnIkdqC/f+hh8QPGKTZNL4OW3GpUkjmdm49wxSoH2+7nURPOGn7w UY2axe7+UxRgGKpP7d4l3/h2ybImQnMDusQrrVdCZT3NoGyY1bsgPNj/3uz031TdD0 3gCbpKqNl/1kA== From: Eric Biggers To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, Zhihang Shao , Ard Biesheuvel , "Martin K. Petersen" Subject: [PATCH v2 02/12] lib/crc-t10dif: add support for arch overrides Date: Sun, 1 Dec 2024 17:20:46 -0800 Message-ID: <20241202012056.209768-3-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241202012056.209768-1-ebiggers@kernel.org> References: <20241202012056.209768-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers Following what was done for CRC32, add support for architecture-specific override of the CRC-T10DIF library. This will allow the CRC-T10DIF library functions to access architecture-optimized code directly. Reviewed-by: Ard Biesheuvel Reviewed-by: Martin K. Petersen Signed-off-by: Eric Biggers --- include/linux/crc-t10dif.h | 12 ++++++++++++ lib/Kconfig | 32 ++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/include/linux/crc-t10dif.h b/include/linux/crc-t10dif.h index 206ba2305483..16787c1cee21 100644 --- a/include/linux/crc-t10dif.h +++ b/include/linux/crc-t10dif.h @@ -5,18 +5,30 @@ #include #define CRC_T10DIF_DIGEST_SIZE 2 #define CRC_T10DIF_BLOCK_SIZE 1 +u16 crc_t10dif_arch(u16 crc, const u8 *p, size_t len); u16 crc_t10dif_generic(u16 crc, const u8 *p, size_t len); static inline u16 crc_t10dif_update(u16 crc, const u8 *p, size_t len) { + if (IS_ENABLED(CONFIG_CRC_T10DIF_ARCH)) + return crc_t10dif_arch(crc, p, len); return crc_t10dif_generic(crc, p, len); } static inline u16 crc_t10dif(const u8 *p, size_t len) { return crc_t10dif_update(0, p, len); } +#if IS_ENABLED(CONFIG_CRC_T10DIF_ARCH) +bool crc_t10dif_is_optimized(void); +#else +static inline bool crc_t10dif_is_optimized(void) +{ + return false; +} +#endif + #endif diff --git a/lib/Kconfig b/lib/Kconfig index be59f7cdf448..e52a38d8d783 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -159,10 +159,42 @@ config CRC_T10DIF help This option is only needed if a module that's not in the kernel tree needs to calculate CRC checks for use with the SCSI data integrity subsystem. +config ARCH_HAS_CRC_T10DIF + bool + +choice + prompt "CRC-T10DIF implementation" + depends on CRC_T10DIF + default CRC_T10DIF_IMPL_ARCH if ARCH_HAS_CRC_T10DIF + default CRC_T10DIF_IMPL_GENERIC if !ARCH_HAS_CRC_T10DIF + help + This option allows you to override the default choice of CRC-T10DIF + implementation. + +config CRC_T10DIF_IMPL_ARCH + bool "Architecture-optimized" if ARCH_HAS_CRC_T10DIF + help + Use the optimized implementation of CRC-T10DIF for the selected + architecture. It is recommended to keep this enabled, as it can + greatly improve CRC-T10DIF performance. + +config CRC_T10DIF_IMPL_GENERIC + bool "Generic implementation" + help + Use the generic table-based implementation of CRC-T10DIF. Selecting + this will reduce code size slightly but can greatly reduce CRC-T10DIF + performance. + +endchoice + +config CRC_T10DIF_ARCH + tristate + default CRC_T10DIF if CRC_T10DIF_IMPL_ARCH + config CRC64_ROCKSOFT tristate "CRC calculation for the Rocksoft model CRC64" select CRC64 select CRYPTO select CRYPTO_CRC64_ROCKSOFT From patchwork Mon Dec 2 01:20:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 846734 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4BD1F23774; Mon, 2 Dec 2024 01:21:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102490; cv=none; b=SRpWUfyG/Zwq2PnNpfMQBj0SGBwaDQHO5/3mKLK+TwLi4TRCw/bhaNc6tAjvuPxiMBb/9zbMKxcHwhgp7SMW8JKvOoZWHtYFayzIe4URK7yu8/TguxBfcRxFFFaqmG2+VEeCD2MY0bDizJaHBRu9vViMUbW0DcxcBF0BJOGIi2k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102490; c=relaxed/simple; bh=ISfyNvdNpbkV2arizMvQq4uuyReubir2d48UPRuYgKY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nLTi21dIqscpvxONqZr2gQYLbDfLn9SmDifpvH7GDUjx4eFBGTTJLOdE51gEKL2MUnDiwjc9Sl+YofArMn9I/X0Hp2PV1bo+wZcXTEdkfMMFL9XyG0EBLAGl8dng0VCcrsjIIzG7GjZdnTxhQ0aKnt/Fx/qwYW5gYMqNelFkGXs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TdVZm53z; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TdVZm53z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E405EC4CECF; Mon, 2 Dec 2024 01:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733102490; bh=ISfyNvdNpbkV2arizMvQq4uuyReubir2d48UPRuYgKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TdVZm53zic6CXInecLInLx9MwZ3dHDWGCNOa8JMD1chwSFgAiZVrp5PnkAsXYpq77 WnZXEbiSoqhArWNxH+ZuHKwG9KD0P5fdpsIb/qFvlEmW4x8M7WFB/9Fsf0egD2ybhD NSxdIG6XSOZ8UTQq144zpskZSXnTAwb8zlTVSy09VY+xOCq/+IDslS8v0nGPElhgYD 5/4cOALmUU8+bICIZZLjYtaPrhtu6PjdpQubG8EEvbgPuutp3p2xb9vauAZtqJhdn3 TSdMLLHe7qsQ+soXNNIunYGiHAscwKsHl/kCnY6MJXSwZGthZhWttt5HIr04zrKxvL P4kxOQLxxEWsA== From: Eric Biggers To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, Zhihang Shao , Ard Biesheuvel , "Martin K. Petersen" Subject: [PATCH v2 04/12] x86/crc-t10dif: expose CRC-T10DIF function through lib Date: Sun, 1 Dec 2024 17:20:48 -0800 Message-ID: <20241202012056.209768-5-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241202012056.209768-1-ebiggers@kernel.org> References: <20241202012056.209768-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers Move the x86 CRC-T10DIF assembly code into the lib directory and wire it up to the library interface. This allows it to be used without going through the crypto API. It remains usable via the crypto API too via the shash algorithms that use the library interface. Thus all the arch-specific "shash" code becomes unnecessary and is removed. Reviewed-by: Ard Biesheuvel Reviewed-by: Martin K. Petersen Signed-off-by: Eric Biggers --- arch/x86/Kconfig | 1 + arch/x86/crypto/Kconfig | 10 -- arch/x86/crypto/Makefile | 3 - arch/x86/crypto/crct10dif-pclmul_glue.c | 143 ------------------ arch/x86/lib/Makefile | 3 + arch/x86/lib/crc-t10dif-glue.c | 51 +++++++ .../{crypto => lib}/crct10dif-pcl-asm_64.S | 0 7 files changed, 55 insertions(+), 156 deletions(-) delete mode 100644 arch/x86/crypto/crct10dif-pclmul_glue.c create mode 100644 arch/x86/lib/crc-t10dif-glue.c rename arch/x86/{crypto => lib}/crct10dif-pcl-asm_64.S (100%) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 4f4fc67fbce7..65f8478fe7a9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -75,10 +75,11 @@ config X86 select ARCH_HAS_CACHE_LINE_SIZE select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION select ARCH_HAS_CPU_FINALIZE_INIT select ARCH_HAS_CPU_PASID if IOMMU_SVA select ARCH_HAS_CRC32 + select ARCH_HAS_CRC_T10DIF if X86_64 select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEBUG_VM_PGTABLE if !X86_PAE select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_DMA_OPS if GART_IOMMU || XEN diff --git a/arch/x86/crypto/Kconfig b/arch/x86/crypto/Kconfig index ba9a7e73cd08..4757bf922075 100644 --- a/arch/x86/crypto/Kconfig +++ b/arch/x86/crypto/Kconfig @@ -490,16 +490,6 @@ config CRYPTO_GHASH_CLMUL_NI_INTEL GCM GHASH hash function (NIST SP800-38D) Architecture: x86_64 using: - CLMUL-NI (carry-less multiplication new instructions) -config CRYPTO_CRCT10DIF_PCLMUL - tristate "CRCT10DIF (PCLMULQDQ)" - depends on X86 && 64BIT && CRC_T10DIF - select CRYPTO_HASH - help - CRC16 CRC algorithm used for the T10 (SCSI) Data Integrity Field (DIF) - - Architecture: x86_64 using: - - PCLMULQDQ (carry-less multiplication) - endmenu diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile index 030b925ca4e2..07b00bfca64b 100644 --- a/arch/x86/crypto/Makefile +++ b/arch/x86/crypto/Makefile @@ -73,13 +73,10 @@ obj-$(CONFIG_CRYPTO_GHASH_CLMUL_NI_INTEL) += ghash-clmulni-intel.o ghash-clmulni-intel-y := ghash-clmulni-intel_asm.o ghash-clmulni-intel_glue.o obj-$(CONFIG_CRYPTO_POLYVAL_CLMUL_NI) += polyval-clmulni.o polyval-clmulni-y := polyval-clmulni_asm.o polyval-clmulni_glue.o -obj-$(CONFIG_CRYPTO_CRCT10DIF_PCLMUL) += crct10dif-pclmul.o -crct10dif-pclmul-y := crct10dif-pcl-asm_64.o crct10dif-pclmul_glue.o - obj-$(CONFIG_CRYPTO_POLY1305_X86_64) += poly1305-x86_64.o poly1305-x86_64-y := poly1305-x86_64-cryptogams.o poly1305_glue.o targets += poly1305-x86_64-cryptogams.S obj-$(CONFIG_CRYPTO_NHPOLY1305_SSE2) += nhpoly1305-sse2.o diff --git a/arch/x86/crypto/crct10dif-pclmul_glue.c b/arch/x86/crypto/crct10dif-pclmul_glue.c deleted file mode 100644 index 71291d5af9f4..000000000000 --- a/arch/x86/crypto/crct10dif-pclmul_glue.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Cryptographic API. - * - * T10 Data Integrity Field CRC16 Crypto Transform using PCLMULQDQ Instructions - * - * Copyright (C) 2013 Intel Corporation - * Author: Tim Chen - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -asmlinkage u16 crc_t10dif_pcl(u16 init_crc, const u8 *buf, size_t len); - -struct chksum_desc_ctx { - __u16 crc; -}; - -static int chksum_init(struct shash_desc *desc) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - ctx->crc = 0; - - return 0; -} - -static int chksum_update(struct shash_desc *desc, const u8 *data, - unsigned int length) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - if (length >= 16 && crypto_simd_usable()) { - kernel_fpu_begin(); - ctx->crc = crc_t10dif_pcl(ctx->crc, data, length); - kernel_fpu_end(); - } else - ctx->crc = crc_t10dif_generic(ctx->crc, data, length); - return 0; -} - -static int chksum_final(struct shash_desc *desc, u8 *out) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - *(__u16 *)out = ctx->crc; - return 0; -} - -static int __chksum_finup(__u16 crc, const u8 *data, unsigned int len, u8 *out) -{ - if (len >= 16 && crypto_simd_usable()) { - kernel_fpu_begin(); - *(__u16 *)out = crc_t10dif_pcl(crc, data, len); - kernel_fpu_end(); - } else - *(__u16 *)out = crc_t10dif_generic(crc, data, len); - return 0; -} - -static int chksum_finup(struct shash_desc *desc, const u8 *data, - unsigned int len, u8 *out) -{ - struct chksum_desc_ctx *ctx = shash_desc_ctx(desc); - - return __chksum_finup(ctx->crc, data, len, out); -} - -static int chksum_digest(struct shash_desc *desc, const u8 *data, - unsigned int length, u8 *out) -{ - return __chksum_finup(0, data, length, out); -} - -static struct shash_alg alg = { - .digestsize = CRC_T10DIF_DIGEST_SIZE, - .init = chksum_init, - .update = chksum_update, - .final = chksum_final, - .finup = chksum_finup, - .digest = chksum_digest, - .descsize = sizeof(struct chksum_desc_ctx), - .base = { - .cra_name = "crct10dif", - .cra_driver_name = "crct10dif-pclmul", - .cra_priority = 200, - .cra_blocksize = CRC_T10DIF_BLOCK_SIZE, - .cra_module = THIS_MODULE, - } -}; - -static const struct x86_cpu_id crct10dif_cpu_id[] = { - X86_MATCH_FEATURE(X86_FEATURE_PCLMULQDQ, NULL), - {} -}; -MODULE_DEVICE_TABLE(x86cpu, crct10dif_cpu_id); - -static int __init crct10dif_intel_mod_init(void) -{ - if (!x86_match_cpu(crct10dif_cpu_id)) - return -ENODEV; - - return crypto_register_shash(&alg); -} - -static void __exit crct10dif_intel_mod_fini(void) -{ - crypto_unregister_shash(&alg); -} - -module_init(crct10dif_intel_mod_init); -module_exit(crct10dif_intel_mod_fini); - -MODULE_AUTHOR("Tim Chen "); -MODULE_DESCRIPTION("T10 DIF CRC calculation accelerated with PCLMULQDQ."); -MODULE_LICENSE("GPL"); - -MODULE_ALIAS_CRYPTO("crct10dif"); -MODULE_ALIAS_CRYPTO("crct10dif-pclmul"); diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index 17510da06c9f..8a59c61624c2 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -40,10 +40,13 @@ lib-$(CONFIG_MITIGATION_RETPOLINE) += retpoline.o obj-$(CONFIG_CRC32_ARCH) += crc32-x86.o crc32-x86-y := crc32-glue.o crc32-pclmul.o crc32-x86-$(CONFIG_64BIT) += crc32c-3way.o +obj-$(CONFIG_CRC_T10DIF_ARCH) += crc-t10dif-x86.o +crc-t10dif-x86-y := crc-t10dif-glue.o crct10dif-pcl-asm_64.o + obj-y += msr.o msr-reg.o msr-reg-export.o hweight.o obj-y += iomem.o ifeq ($(CONFIG_X86_32),y) obj-y += atomic64_32.o diff --git a/arch/x86/lib/crc-t10dif-glue.c b/arch/x86/lib/crc-t10dif-glue.c new file mode 100644 index 000000000000..13f07ddc9122 --- /dev/null +++ b/arch/x86/lib/crc-t10dif-glue.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * CRC-T10DIF using PCLMULQDQ instructions + * + * Copyright 2024 Google LLC + */ + +#include +#include +#include +#include +#include + +static DEFINE_STATIC_KEY_FALSE(have_pclmulqdq); + +asmlinkage u16 crc_t10dif_pcl(u16 init_crc, const u8 *buf, size_t len); + +u16 crc_t10dif_arch(u16 crc, const u8 *p, size_t len) +{ + if (len >= 16 && + static_key_enabled(&have_pclmulqdq) && crypto_simd_usable()) { + kernel_fpu_begin(); + crc = crc_t10dif_pcl(crc, p, len); + kernel_fpu_end(); + return crc; + } + return crc_t10dif_generic(crc, p, len); +} +EXPORT_SYMBOL(crc_t10dif_arch); + +static int __init crc_t10dif_x86_init(void) +{ + if (boot_cpu_has(X86_FEATURE_PCLMULQDQ)) + static_branch_enable(&have_pclmulqdq); + return 0; +} +arch_initcall(crc_t10dif_x86_init); + +static void __exit crc_t10dif_x86_exit(void) +{ +} +module_exit(crc_t10dif_x86_exit); + +bool crc_t10dif_is_optimized(void) +{ + return static_key_enabled(&have_pclmulqdq); +} +EXPORT_SYMBOL(crc_t10dif_is_optimized); + +MODULE_DESCRIPTION("CRC-T10DIF using PCLMULQDQ instructions"); +MODULE_LICENSE("GPL"); diff --git a/arch/x86/crypto/crct10dif-pcl-asm_64.S b/arch/x86/lib/crct10dif-pcl-asm_64.S similarity index 100% rename from arch/x86/crypto/crct10dif-pcl-asm_64.S rename to arch/x86/lib/crct10dif-pcl-asm_64.S From patchwork Mon Dec 2 01:20:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 846733 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82EFD3BBF0; Mon, 2 Dec 2024 01:21:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102491; cv=none; b=fbcCzWjga3Hh1xMpi+4a7Nel/vens4ckUI+oIC2X6yYJRiTLHOxPVcsyJLH8egrwEHunwy3YnEbeTwhKOdXkYpCHHIItvLWrh0u4M0vIPefhSgZjNhxaMxDpGn1rMkrIxqHD45q5C3qRmkhzMqrwgqsEB4p0kIiht9OAOpmA2WE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102491; c=relaxed/simple; bh=uZpRi3DEfmAoO5Yk/0z7wihnQeAI8Acvqn1jamG9QBE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lIrXiwcU97gnbrb/zsfbjVIpmpcMj6YIYyqRpkeygfO6gqAlhFBGWlJcVtf+UfQoLtuFFozdqRhKAbh+HGlgT5mvRj1yo01qUnpEqCBLzBOWtSPi1NERjsINOf//+5U0V60aOQFpsEQWtW7aMJg0v4QYhr8Yf/JhK9tRqrI6T/w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KQxT2NmD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KQxT2NmD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 26F57C4CEE6; Mon, 2 Dec 2024 01:21:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733102491; bh=uZpRi3DEfmAoO5Yk/0z7wihnQeAI8Acvqn1jamG9QBE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KQxT2NmDgfUDlNBAbGePqzelv+jU91CMQXbNqTJ80+Mt9H6qBytewyIJ3lkyvP/Rd O+h+F+mvRN6a1KFfayqFgHIm/w0OCIkd/QHLze5XiqqJ7i6aIJNvh9ZdjjSWkb0PwN RlKAJzhODTL+e0DVRHBB2Im4rO/NalLq+o+6z1tREULwYwahYcUbAgUbV+fh9P0PGd /I7wHGLMxbKdIO8l92/r65jZVFtrnA1y+dlO/PnazWzjFCKcyuPhsbgQ/+qO2bE3BF Pd4ZTKHj9l0enB2M/GivbX03X2hPhN3SPa+Itl4oBTTKBf6kVO54oaj3TZqaWgGgLg dDJYOZW2S8UhA== From: Eric Biggers To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, Zhihang Shao , Ard Biesheuvel , "Martin K. Petersen" Subject: [PATCH v2 07/12] powerpc/crc-t10dif: expose CRC-T10DIF function through lib Date: Sun, 1 Dec 2024 17:20:51 -0800 Message-ID: <20241202012056.209768-8-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241202012056.209768-1-ebiggers@kernel.org> References: <20241202012056.209768-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers Move the powerpc CRC-T10DIF assembly code into the lib directory and wire it up to the library interface. This allows it to be used without going through the crypto API. It remains usable via the crypto API too via the shash algorithms that use the library interface. Thus all the arch-specific "shash" code becomes unnecessary and is removed. Note: to see the diff from arch/powerpc/crypto/crct10dif-vpmsum_glue.c to arch/powerpc/lib/crc-t10dif-glue.c, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel Reviewed-by: Martin K. Petersen Signed-off-by: Eric Biggers --- arch/powerpc/Kconfig | 1 + arch/powerpc/configs/powernv_defconfig | 1 - arch/powerpc/configs/ppc64_defconfig | 1 - arch/powerpc/crypto/Kconfig | 15 +--- arch/powerpc/crypto/Makefile | 2 - arch/powerpc/lib/Makefile | 3 + .../crc-t10dif-glue.c} | 69 +++++-------------- .../{crypto => lib}/crct10dif-vpmsum_asm.S | 2 +- 8 files changed, 23 insertions(+), 71 deletions(-) rename arch/powerpc/{crypto/crct10dif-vpmsum_glue.c => lib/crc-t10dif-glue.c} (50%) rename arch/powerpc/{crypto => lib}/crct10dif-vpmsum_asm.S (99%) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b5050a09a27f..da0ac6697ac5 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -126,10 +126,11 @@ config PPC select ARCH_DMA_DEFAULT_COHERENT if !NOT_COHERENT_CACHE select ARCH_ENABLE_MEMORY_HOTPLUG select ARCH_ENABLE_MEMORY_HOTREMOVE select ARCH_HAS_COPY_MC if PPC64 select ARCH_HAS_CRC32 if PPC64 && ALTIVEC + select ARCH_HAS_CRC_T10DIF if PPC64 && ALTIVEC select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DEBUG_VIRTUAL select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DEBUG_WX if STRICT_KERNEL_RWX select ARCH_HAS_DEVMEM_IS_ALLOWED diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig index 4a7ddea05b4d..6b6d7467fecf 100644 --- a/arch/powerpc/configs/powernv_defconfig +++ b/arch/powerpc/configs/powernv_defconfig @@ -318,11 +318,10 @@ CONFIG_FTR_FIXUP_SELFTEST=y CONFIG_MSI_BITMAP_SELFTEST=y CONFIG_XMON=y CONFIG_CRYPTO_TEST=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_HMAC=y -CONFIG_CRYPTO_CRCT10DIF_VPMSUM=m CONFIG_CRYPTO_MD5_PPC=m CONFIG_CRYPTO_MICHAEL_MIC=m CONFIG_CRYPTO_SHA1_PPC=m CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_WP512=m diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig index 58e5f4488da4..15101f5c3238 100644 --- a/arch/powerpc/configs/ppc64_defconfig +++ b/arch/powerpc/configs/ppc64_defconfig @@ -387,11 +387,10 @@ CONFIG_CRYPTO_TWOFISH=m CONFIG_CRYPTO_PCBC=m CONFIG_CRYPTO_MICHAEL_MIC=m CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_WP512=m CONFIG_CRYPTO_LZO=m -CONFIG_CRYPTO_CRCT10DIF_VPMSUM=m CONFIG_CRYPTO_VPMSUM_TESTER=m CONFIG_CRYPTO_MD5_PPC=m CONFIG_CRYPTO_SHA1_PPC=m CONFIG_CRYPTO_AES_GCM_P10=m CONFIG_CRYPTO_DEV_NX=y diff --git a/arch/powerpc/crypto/Kconfig b/arch/powerpc/crypto/Kconfig index 2d89e35b3cdd..45376f1a43bd 100644 --- a/arch/powerpc/crypto/Kconfig +++ b/arch/powerpc/crypto/Kconfig @@ -11,25 +11,14 @@ config CRYPTO_CURVE25519_PPC64 Curve25519 algorithm Architecture: PowerPC64 - Little-endian -config CRYPTO_CRCT10DIF_VPMSUM - tristate "CRC32T10DIF" - depends on PPC64 && ALTIVEC && CRC_T10DIF - select CRYPTO_HASH - help - CRC16 CRC algorithm used for the T10 (SCSI) Data Integrity Field (DIF) - - Architecture: powerpc64 using - - AltiVec extensions - - Enable on POWER8 and newer processors for improved performance. - config CRYPTO_VPMSUM_TESTER tristate "CRC32c and CRC32T10DIF hardware acceleration tester" - depends on CRYPTO_CRCT10DIF_VPMSUM && CRYPTO_CRC32C && CRC32_ARCH + depends on CRYPTO_CRC32C && CRC32_ARCH + depends on CRYPTO_CRCT10DIF && CRC_T10DIF_ARCH help Stress test for CRC32c and CRCT10DIF algorithms implemented with powerpc64 AltiVec extensions (POWER8 vpmsum instructions). Unless you are testing these algorithms, you don't need this. diff --git a/arch/powerpc/crypto/Makefile b/arch/powerpc/crypto/Makefile index 54486192273c..d2238ac7e52c 100644 --- a/arch/powerpc/crypto/Makefile +++ b/arch/powerpc/crypto/Makefile @@ -8,11 +8,10 @@ obj-$(CONFIG_CRYPTO_AES_PPC_SPE) += aes-ppc-spe.o obj-$(CONFIG_CRYPTO_MD5_PPC) += md5-ppc.o obj-$(CONFIG_CRYPTO_SHA1_PPC) += sha1-powerpc.o obj-$(CONFIG_CRYPTO_SHA1_PPC_SPE) += sha1-ppc-spe.o obj-$(CONFIG_CRYPTO_SHA256_PPC_SPE) += sha256-ppc-spe.o -obj-$(CONFIG_CRYPTO_CRCT10DIF_VPMSUM) += crct10dif-vpmsum.o obj-$(CONFIG_CRYPTO_VPMSUM_TESTER) += crc-vpmsum_test.o obj-$(CONFIG_CRYPTO_AES_GCM_P10) += aes-gcm-p10-crypto.o obj-$(CONFIG_CRYPTO_CHACHA20_P10) += chacha-p10-crypto.o obj-$(CONFIG_CRYPTO_POLY1305_P10) += poly1305-p10-crypto.o obj-$(CONFIG_CRYPTO_DEV_VMX_ENCRYPT) += vmx-crypto.o @@ -21,11 +20,10 @@ obj-$(CONFIG_CRYPTO_CURVE25519_PPC64) += curve25519-ppc64le.o aes-ppc-spe-y := aes-spe-core.o aes-spe-keys.o aes-tab-4k.o aes-spe-modes.o aes-spe-glue.o md5-ppc-y := md5-asm.o md5-glue.o sha1-powerpc-y := sha1-powerpc-asm.o sha1.o sha1-ppc-spe-y := sha1-spe-asm.o sha1-spe-glue.o sha256-ppc-spe-y := sha256-spe-asm.o sha256-spe-glue.o -crct10dif-vpmsum-y := crct10dif-vpmsum_asm.o crct10dif-vpmsum_glue.o aes-gcm-p10-crypto-y := aes-gcm-p10-glue.o aes-gcm-p10.o ghashp10-ppc.o aesp10-ppc.o chacha-p10-crypto-y := chacha-p10-glue.o chacha-p10le-8x.o poly1305-p10-crypto-y := poly1305-p10-glue.o poly1305-p10le_64.o vmx-crypto-objs := vmx.o aesp8-ppc.o ghashp8-ppc.o aes.o aes_cbc.o aes_ctr.o aes_xts.o ghash.o curve25519-ppc64le-y := curve25519-ppc64le-core.o curve25519-ppc64le_asm.o diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index da9381a1c95b..dd8a4b52a0cc 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -79,6 +79,9 @@ CFLAGS_xor_vmx.o += -mhard-float -maltivec $(call cc-option,-mabi=altivec) CFLAGS_xor_vmx.o += -isystem $(shell $(CC) -print-file-name=include) obj-$(CONFIG_CRC32_ARCH) += crc32-powerpc.o crc32-powerpc-y := crc32-glue.o crc32c-vpmsum_asm.o +obj-$(CONFIG_CRC_T10DIF_ARCH) += crc-t10dif-powerpc.o +crc-t10dif-powerpc-y := crc-t10dif-glue.o crct10dif-vpmsum_asm.o + obj-$(CONFIG_PPC64) += $(obj64-y) diff --git a/arch/powerpc/crypto/crct10dif-vpmsum_glue.c b/arch/powerpc/lib/crc-t10dif-glue.c similarity index 50% rename from arch/powerpc/crypto/crct10dif-vpmsum_glue.c rename to arch/powerpc/lib/crc-t10dif-glue.c index 1dc8b6915178..730850dbc51d 100644 --- a/arch/powerpc/crypto/crct10dif-vpmsum_glue.c +++ b/arch/powerpc/lib/crc-t10dif-glue.c @@ -5,11 +5,10 @@ * Copyright 2017, Daniel Axtens, IBM Corporation. * [based on crc32c-vpmsum_glue.c] */ #include -#include #include #include #include #include #include @@ -20,19 +19,22 @@ #define VMX_ALIGN 16 #define VMX_ALIGN_MASK (VMX_ALIGN-1) #define VECTOR_BREAKPOINT 64 +static DEFINE_STATIC_KEY_FALSE(have_vec_crypto); + u32 __crct10dif_vpmsum(u32 crc, unsigned char const *p, size_t len); -static u16 crct10dif_vpmsum(u16 crci, unsigned char const *p, size_t len) +u16 crc_t10dif_arch(u16 crci, const u8 *p, size_t len) { unsigned int prealign; unsigned int tail; u32 crc = crci; - if (len < (VECTOR_BREAKPOINT + VMX_ALIGN) || !crypto_simd_usable()) + if (len < (VECTOR_BREAKPOINT + VMX_ALIGN) || + !static_branch_likely(&have_vec_crypto) || !crypto_simd_usable()) return crc_t10dif_generic(crc, p, len); if ((unsigned long)p & VMX_ALIGN_MASK) { prealign = VMX_ALIGN - ((unsigned long)p & VMX_ALIGN_MASK); crc = crc_t10dif_generic(crc, p, prealign); @@ -58,69 +60,30 @@ static u16 crct10dif_vpmsum(u16 crci, unsigned char const *p, size_t len) crc = crc_t10dif_generic(crc, p, tail); } return crc & 0xffff; } +EXPORT_SYMBOL(crc_t10dif_arch); -static int crct10dif_vpmsum_init(struct shash_desc *desc) -{ - u16 *crc = shash_desc_ctx(desc); - - *crc = 0; - return 0; -} - -static int crct10dif_vpmsum_update(struct shash_desc *desc, const u8 *data, - unsigned int length) -{ - u16 *crc = shash_desc_ctx(desc); - - *crc = crct10dif_vpmsum(*crc, data, length); - - return 0; -} - - -static int crct10dif_vpmsum_final(struct shash_desc *desc, u8 *out) +static int __init crc_t10dif_powerpc_init(void) { - u16 *crcp = shash_desc_ctx(desc); - - *(u16 *)out = *crcp; + if (cpu_has_feature(CPU_FTR_ARCH_207S) && + (cur_cpu_spec->cpu_user_features2 & PPC_FEATURE2_VEC_CRYPTO)) + static_branch_enable(&have_vec_crypto); return 0; } +arch_initcall(crc_t10dif_powerpc_init); -static struct shash_alg alg = { - .init = crct10dif_vpmsum_init, - .update = crct10dif_vpmsum_update, - .final = crct10dif_vpmsum_final, - .descsize = CRC_T10DIF_DIGEST_SIZE, - .digestsize = CRC_T10DIF_DIGEST_SIZE, - .base = { - .cra_name = "crct10dif", - .cra_driver_name = "crct10dif-vpmsum", - .cra_priority = 200, - .cra_blocksize = CRC_T10DIF_BLOCK_SIZE, - .cra_module = THIS_MODULE, - } -}; - -static int __init crct10dif_vpmsum_mod_init(void) +static void __exit crc_t10dif_powerpc_exit(void) { - if (!cpu_has_feature(CPU_FTR_ARCH_207S)) - return -ENODEV; - - return crypto_register_shash(&alg); } +module_exit(crc_t10dif_powerpc_exit); -static void __exit crct10dif_vpmsum_mod_fini(void) +bool crc_t10dif_is_optimized(void) { - crypto_unregister_shash(&alg); + return static_key_enabled(&have_vec_crypto); } - -module_cpu_feature_match(PPC_MODULE_FEATURE_VEC_CRYPTO, crct10dif_vpmsum_mod_init); -module_exit(crct10dif_vpmsum_mod_fini); +EXPORT_SYMBOL(crc_t10dif_is_optimized); MODULE_AUTHOR("Daniel Axtens "); MODULE_DESCRIPTION("CRCT10DIF using vector polynomial multiply-sum instructions"); MODULE_LICENSE("GPL"); -MODULE_ALIAS_CRYPTO("crct10dif"); -MODULE_ALIAS_CRYPTO("crct10dif-vpmsum"); diff --git a/arch/powerpc/crypto/crct10dif-vpmsum_asm.S b/arch/powerpc/lib/crct10dif-vpmsum_asm.S similarity index 99% rename from arch/powerpc/crypto/crct10dif-vpmsum_asm.S rename to arch/powerpc/lib/crct10dif-vpmsum_asm.S index 0a52261bf859..f0b93a0fe168 100644 --- a/arch/powerpc/crypto/crct10dif-vpmsum_asm.S +++ b/arch/powerpc/lib/crct10dif-vpmsum_asm.S @@ -840,6 +840,6 @@ .octa 0x000000000000000000000001f65a57f8 /* x^64 div p(x) */ /* Barrett constant n */ .octa 0x0000000000000000000000018bb70000 #define CRC_FUNCTION_NAME __crct10dif_vpmsum -#include "../lib/crc32-vpmsum_core.S" +#include "crc32-vpmsum_core.S" From patchwork Mon Dec 2 01:20:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 846732 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEDE04D9FE; Mon, 2 Dec 2024 01:21:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102492; cv=none; b=Pss+AgqgO0rWzT0vGAlMmtDjxXWnVf8VK+btpIDkjKZV3i1DLS6dcJiYe93w6NMf2qtBEASK2ivT/N1ZPVU1bXb7CXENFgL9a3ihjPfy4RMYgHFW5Ga156iDe3m42X/eZdOyKcUX+F6qvcK7WqftslOWQhZTpCUwFswr51/+uwM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102492; c=relaxed/simple; bh=Dn8OPUmqXUFgSm05sfdBrF0SgZxvdAisWASqU8n0vXw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; 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Petersen" Subject: [PATCH v2 08/12] lib/crc_kunit.c: add KUnit test suite for CRC library functions Date: Sun, 1 Dec 2024 17:20:52 -0800 Message-ID: <20241202012056.209768-9-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241202012056.209768-1-ebiggers@kernel.org> References: <20241202012056.209768-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers Add a KUnit test suite for the crc16, crc_t10dif, crc32_le, crc32_be, crc32c, and crc64_be library functions. It avoids code duplication by sharing most logic among all CRC variants. The test suite includes: - Differential fuzz test of each CRC function against a simple bit-at-a-time reference implementation. - Test for CRC combination, when implemented by a CRC variant. - Optional benchmark of each CRC function with various data lengths. This is intended as a replacement for crc32test and crc16_kunit, as well as a new test for CRC variants which didn't previously have a test. Reviewed-by: Ard Biesheuvel Reviewed-by: Martin K. Petersen Cc: Vinicius Peixoto Signed-off-by: Eric Biggers --- lib/Kconfig.debug | 20 +++ lib/Makefile | 1 + lib/crc_kunit.c | 435 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 456 insertions(+) create mode 100644 lib/crc_kunit.c diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index f3d723705879..d9b89dd3f6a0 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2836,10 +2836,30 @@ config HW_BREAKPOINT_KUNIT_TEST help Tests for hw_breakpoint constraints accounting. If unsure, say N. +config CRC_KUNIT_TEST + tristate "KUnit tests for CRC functions" if !KUNIT_ALL_TESTS + depends on KUNIT + default KUNIT_ALL_TESTS + select CRC16 + select CRC_T10DIF + select CRC32 + select CRC64 + help + Unit tests for the CRC library functions. + + This is intended to help people writing architecture-specific + optimized versions. If unsure, say N. + +config CRC_BENCHMARK + bool "Benchmark for the CRC functions" + depends on CRC_KUNIT_TEST + help + Include benchmarks in the KUnit test suite for the CRC functions. + config SIPHASH_KUNIT_TEST tristate "Perform selftest on siphash functions" if !KUNIT_ALL_TESTS depends on KUNIT default KUNIT_ALL_TESTS help diff --git a/lib/Makefile b/lib/Makefile index 6573163d24e4..ccd803d03e58 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -389,10 +389,11 @@ obj-$(CONFIG_STACKINIT_KUNIT_TEST) += stackinit_kunit.o CFLAGS_fortify_kunit.o += $(call cc-disable-warning, unsequenced) CFLAGS_fortify_kunit.o += $(call cc-disable-warning, stringop-overread) CFLAGS_fortify_kunit.o += $(call cc-disable-warning, stringop-truncation) CFLAGS_fortify_kunit.o += $(DISABLE_STRUCTLEAK_PLUGIN) obj-$(CONFIG_FORTIFY_KUNIT_TEST) += fortify_kunit.o +obj-$(CONFIG_CRC_KUNIT_TEST) += crc_kunit.o obj-$(CONFIG_SIPHASH_KUNIT_TEST) += siphash_kunit.o obj-$(CONFIG_USERCOPY_KUNIT_TEST) += usercopy_kunit.o obj-$(CONFIG_CRC16_KUNIT_TEST) += crc16_kunit.o obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o diff --git a/lib/crc_kunit.c b/lib/crc_kunit.c new file mode 100644 index 000000000000..6a61d4b5fd45 --- /dev/null +++ b/lib/crc_kunit.c @@ -0,0 +1,435 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Unit tests and benchmarks for the CRC library functions + * + * Copyright 2024 Google LLC + * + * Author: Eric Biggers + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#define CRC_KUNIT_SEED 42 +#define CRC_KUNIT_MAX_LEN 16384 +#define CRC_KUNIT_NUM_TEST_ITERS 1000 + +static struct rnd_state rng; +static u8 *test_buffer; +static size_t test_buflen; + +/** + * struct crc_variant - describes a CRC variant + * @bits: Number of bits in the CRC, 1 <= @bits <= 64. + * @le: true if it's a "little endian" CRC (reversed mapping between bits and + * polynomial coefficients in each byte), false if it's a "big endian" CRC + * (natural mapping between bits and polynomial coefficients in each byte) + * @poly: The generator polynomial with the highest-order term omitted. + * Bit-reversed if @le is true. + * @func: The function to compute a CRC. The type signature uses u64 so that it + * can fit any CRC up to CRC-64. + * @combine_func: Optional function to combine two CRCs. + */ +struct crc_variant { + int bits; + bool le; + u64 poly; + u64 (*func)(u64 crc, const u8 *p, size_t len); + u64 (*combine_func)(u64 crc1, u64 crc2, size_t len2); +}; + +static u32 rand32(void) +{ + return prandom_u32_state(&rng); +} + +static u64 rand64(void) +{ + u32 n = rand32(); + + return ((u64)n << 32) | rand32(); +} + +static u64 crc_mask(const struct crc_variant *v) +{ + return (u64)-1 >> (64 - v->bits); +} + +/* Reference implementation of any CRC variant */ +static u64 crc_ref(const struct crc_variant *v, + u64 crc, const u8 *p, size_t len) +{ + size_t i, j; + + for (i = 0; i < len; i++) { + for (j = 0; j < 8; j++) { + if (v->le) { + crc ^= (p[i] >> j) & 1; + crc = (crc >> 1) ^ ((crc & 1) ? v->poly : 0); + } else { + crc ^= (u64)((p[i] >> (7 - j)) & 1) << + (v->bits - 1); + if (crc & (1ULL << (v->bits - 1))) + crc = ((crc << 1) ^ v->poly) & + crc_mask(v); + else + crc <<= 1; + } + } + } + return crc; +} + +static int crc_suite_init(struct kunit_suite *suite) +{ + /* + * Allocate the test buffer using vmalloc() with a page-aligned length + * so that it is immediately followed by a guard page. This allows + * buffer overreads to be detected, even in assembly code. + */ + test_buflen = round_up(CRC_KUNIT_MAX_LEN, PAGE_SIZE); + test_buffer = vmalloc(test_buflen); + if (!test_buffer) + return -ENOMEM; + + prandom_seed_state(&rng, CRC_KUNIT_SEED); + prandom_bytes_state(&rng, test_buffer, test_buflen); + return 0; +} + +static void crc_suite_exit(struct kunit_suite *suite) +{ + vfree(test_buffer); + test_buffer = NULL; +} + +/* Generate a random initial CRC. */ +static u64 generate_random_initial_crc(const struct crc_variant *v) +{ + switch (rand32() % 4) { + case 0: + return 0; + case 1: + return crc_mask(v); /* All 1 bits */ + default: + return rand64() & crc_mask(v); + } +} + +/* Generate a random length, preferring small lengths. */ +static size_t generate_random_length(size_t max_length) +{ + size_t len; + + switch (rand32() % 3) { + case 0: + len = rand32() % 128; + break; + case 1: + len = rand32() % 3072; + break; + default: + len = rand32(); + break; + } + return len % (max_length + 1); +} + +/* Test that v->func gives the same CRCs as a reference implementation. */ +static void crc_main_test(struct kunit *test, const struct crc_variant *v) +{ + size_t i; + + for (i = 0; i < CRC_KUNIT_NUM_TEST_ITERS; i++) { + u64 init_crc, expected_crc, actual_crc; + size_t len, offset; + bool nosimd; + + init_crc = generate_random_initial_crc(v); + len = generate_random_length(CRC_KUNIT_MAX_LEN); + + /* Generate a random offset. */ + if (rand32() % 2 == 0) { + /* Use a random alignment mod 64 */ + offset = rand32() % 64; + offset = min(offset, CRC_KUNIT_MAX_LEN - len); + } else { + /* Go up to the guard page, to catch buffer overreads */ + offset = test_buflen - len; + } + + if (rand32() % 8 == 0) + /* Refresh the data occasionally. */ + prandom_bytes_state(&rng, &test_buffer[offset], len); + + nosimd = rand32() % 8 == 0; + + /* + * Compute the CRC, and verify that it equals the CRC computed + * by a simple bit-at-a-time reference implementation. + */ + expected_crc = crc_ref(v, init_crc, &test_buffer[offset], len); + if (nosimd) + local_irq_disable(); + actual_crc = v->func(init_crc, &test_buffer[offset], len); + if (nosimd) + local_irq_enable(); + KUNIT_EXPECT_EQ_MSG(test, expected_crc, actual_crc, + "Wrong result with len=%zu offset=%zu nosimd=%d", + len, offset, nosimd); + } +} + +/* Test that CRC(concat(A, B)) == combine_CRCs(CRC(A), CRC(B), len(B)). */ +static void crc_combine_test(struct kunit *test, const struct crc_variant *v) +{ + int i; + + for (i = 0; i < 100; i++) { + u64 init_crc = generate_random_initial_crc(v); + size_t len1 = generate_random_length(CRC_KUNIT_MAX_LEN); + size_t len2 = generate_random_length(CRC_KUNIT_MAX_LEN - len1); + u64 crc1, crc2, expected_crc, actual_crc; + + prandom_bytes_state(&rng, test_buffer, len1 + len2); + crc1 = v->func(init_crc, test_buffer, len1); + crc2 = v->func(0, &test_buffer[len1], len2); + expected_crc = v->func(init_crc, test_buffer, len1 + len2); + actual_crc = v->combine_func(crc1, crc2, len2); + KUNIT_EXPECT_EQ_MSG(test, expected_crc, actual_crc, + "CRC combination gave wrong result with len1=%zu len2=%zu\n", + len1, len2); + } +} + +static void crc_test(struct kunit *test, const struct crc_variant *v) +{ + crc_main_test(test, v); + if (v->combine_func) + crc_combine_test(test, v); +} + +static __always_inline void +crc_benchmark(struct kunit *test, + u64 (*crc_func)(u64 crc, const u8 *p, size_t len)) +{ + static const size_t lens_to_test[] = { + 1, 16, 64, 127, 128, 200, 256, 511, 512, 1024, 3173, 4096, 16384, + }; + size_t len, i, j, num_iters; + /* + * Some of the CRC library functions are marked as __pure, so use + * volatile to ensure that all calls are really made as intended. + */ + volatile u64 crc = 0; + u64 t; + + if (!IS_ENABLED(CONFIG_CRC_BENCHMARK)) + kunit_skip(test, "not enabled"); + + /* warm-up */ + for (i = 0; i < 10000000; i += CRC_KUNIT_MAX_LEN) + crc = crc_func(crc, test_buffer, CRC_KUNIT_MAX_LEN); + + for (i = 0; i < ARRAY_SIZE(lens_to_test); i++) { + len = lens_to_test[i]; + KUNIT_ASSERT_LE(test, len, CRC_KUNIT_MAX_LEN); + num_iters = 10000000 / (len + 128); + preempt_disable(); + t = ktime_get_ns(); + for (j = 0; j < num_iters; j++) + crc = crc_func(crc, test_buffer, len); + t = ktime_get_ns() - t; + preempt_enable(); + kunit_info(test, "len=%zu: %llu MB/s\n", + len, div64_u64((u64)len * num_iters * 1000, t)); + } +} + +/* crc16 */ + +static u64 crc16_wrapper(u64 crc, const u8 *p, size_t len) +{ + return crc16(crc, p, len); +} + +static const struct crc_variant crc_variant_crc16 = { + .bits = 16, + .le = true, + .poly = 0xa001, + .func = crc16_wrapper, +}; + +static void crc16_test(struct kunit *test) +{ + crc_test(test, &crc_variant_crc16); +} + +static void crc16_benchmark(struct kunit *test) +{ + crc_benchmark(test, crc16_wrapper); +} + +/* crc_t10dif */ + +static u64 crc_t10dif_wrapper(u64 crc, const u8 *p, size_t len) +{ + return crc_t10dif_update(crc, p, len); +} + +static const struct crc_variant crc_variant_crc_t10dif = { + .bits = 16, + .le = false, + .poly = 0x8bb7, + .func = crc_t10dif_wrapper, +}; + +static void crc_t10dif_test(struct kunit *test) +{ + crc_test(test, &crc_variant_crc_t10dif); +} + +static void crc_t10dif_benchmark(struct kunit *test) +{ + crc_benchmark(test, crc_t10dif_wrapper); +} + +/* crc32_le */ + +static u64 crc32_le_wrapper(u64 crc, const u8 *p, size_t len) +{ + return crc32_le(crc, p, len); +} + +static u64 crc32_le_combine_wrapper(u64 crc1, u64 crc2, size_t len2) +{ + return crc32_le_combine(crc1, crc2, len2); +} + +static const struct crc_variant crc_variant_crc32_le = { + .bits = 32, + .le = true, + .poly = 0xedb88320, + .func = crc32_le_wrapper, + .combine_func = crc32_le_combine_wrapper, +}; + +static void crc32_le_test(struct kunit *test) +{ + crc_test(test, &crc_variant_crc32_le); +} + +static void crc32_le_benchmark(struct kunit *test) +{ + crc_benchmark(test, crc32_le_wrapper); +} + +/* crc32_be */ + +static u64 crc32_be_wrapper(u64 crc, const u8 *p, size_t len) +{ + return crc32_be(crc, p, len); +} + +static const struct crc_variant crc_variant_crc32_be = { + .bits = 32, + .le = false, + .poly = 0x04c11db7, + .func = crc32_be_wrapper, +}; + +static void crc32_be_test(struct kunit *test) +{ + crc_test(test, &crc_variant_crc32_be); +} + +static void crc32_be_benchmark(struct kunit *test) +{ + crc_benchmark(test, crc32_be_wrapper); +} + +/* crc32c */ + +static u64 crc32c_wrapper(u64 crc, const u8 *p, size_t len) +{ + return crc32c(crc, p, len); +} + +static u64 crc32c_combine_wrapper(u64 crc1, u64 crc2, size_t len2) +{ + return __crc32c_le_combine(crc1, crc2, len2); +} + +static const struct crc_variant crc_variant_crc32c = { + .bits = 32, + .le = true, + .poly = 0x82f63b78, + .func = crc32c_wrapper, + .combine_func = crc32c_combine_wrapper, +}; + +static void crc32c_test(struct kunit *test) +{ + crc_test(test, &crc_variant_crc32c); +} + +static void crc32c_benchmark(struct kunit *test) +{ + crc_benchmark(test, crc32c_wrapper); +} + +/* crc64_be */ + +static u64 crc64_be_wrapper(u64 crc, const u8 *p, size_t len) +{ + return crc64_be(crc, p, len); +} + +static const struct crc_variant crc_variant_crc64_be = { + .bits = 64, + .le = false, + .poly = 0x42f0e1eba9ea3693, + .func = crc64_be_wrapper, +}; + +static void crc64_be_test(struct kunit *test) +{ + crc_test(test, &crc_variant_crc64_be); +} + +static void crc64_be_benchmark(struct kunit *test) +{ + crc_benchmark(test, crc64_be_wrapper); +} + +static struct kunit_case crc_test_cases[] = { + KUNIT_CASE(crc16_test), + KUNIT_CASE(crc16_benchmark), + KUNIT_CASE(crc_t10dif_test), + KUNIT_CASE(crc_t10dif_benchmark), + KUNIT_CASE(crc32_le_test), + KUNIT_CASE(crc32_le_benchmark), + KUNIT_CASE(crc32_be_test), + KUNIT_CASE(crc32_be_benchmark), + KUNIT_CASE(crc32c_test), + KUNIT_CASE(crc32c_benchmark), + KUNIT_CASE(crc64_be_test), + KUNIT_CASE(crc64_be_benchmark), + {}, +}; + +static struct kunit_suite crc_test_suite = { + .name = "crc", + .test_cases = crc_test_cases, + .suite_init = crc_suite_init, + .suite_exit = crc_suite_exit, +}; +kunit_test_suite(crc_test_suite); + +MODULE_DESCRIPTION("Unit tests and benchmarks for the CRC library functions"); +MODULE_LICENSE("GPL"); From patchwork Mon Dec 2 01:20:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 846731 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D36927E0E8; 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dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HrvPGBlN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6348CC4CEE0; Mon, 2 Dec 2024 01:21:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733102492; bh=o0eCPzA0D45VguNqa0yfkh1AflxyQTHp18OjZ0iFpPE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HrvPGBlNmZ2YfeluAVrIdwQJoAiQ3WvTfyK/lwbzTXiyroF9/KF4250m250fxvEq3 cKhv4zRJuMRDAjN09ZmxgZ9C95anAGkuZmP04hLHIH3Bh6dVm3N+8EcRIN8X0ffhrR K6hlZFBovNn3raFqbPe2gHT3BKTAg/yNikUK+uuKmhPibpmIGVmGkVI8u/XV8QzJV7 0kLg+gKoW5lp58fIuUqcz3Kzo4gZZaUVlJRRfdpdqEEybulbHPZgh8GGxd7AgLsSum dqQM3ztrvpzW4ngI3ynSDAFOEDL9eUGCSV8U10ZF3IImUxddW4u1V/gVGQq5qOx4z8 XV3XkUI33UEfg== From: Eric Biggers To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, Zhihang Shao , Ard Biesheuvel , Vinicius Peixoto , "Martin K. Petersen" Subject: [PATCH v2 10/12] lib/crc32test: delete obsolete crc32test.c Date: Sun, 1 Dec 2024 17:20:54 -0800 Message-ID: <20241202012056.209768-11-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241202012056.209768-1-ebiggers@kernel.org> References: <20241202012056.209768-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers Delete crc32test.c, since it has been superseded by crc_kunit.c. Reviewed-by: Ard Biesheuvel Reviewed-by: Martin K. Petersen Cc: Vinicius Peixoto Signed-off-by: Eric Biggers --- arch/m68k/configs/amiga_defconfig | 1 - arch/m68k/configs/apollo_defconfig | 1 - arch/m68k/configs/atari_defconfig | 1 - arch/m68k/configs/bvme6000_defconfig | 1 - arch/m68k/configs/hp300_defconfig | 1 - arch/m68k/configs/mac_defconfig | 1 - arch/m68k/configs/multi_defconfig | 1 - arch/m68k/configs/mvme147_defconfig | 1 - arch/m68k/configs/mvme16x_defconfig | 1 - arch/m68k/configs/q40_defconfig | 1 - arch/m68k/configs/sun3_defconfig | 1 - arch/m68k/configs/sun3x_defconfig | 1 - arch/s390/configs/debug_defconfig | 1 - lib/Kconfig | 9 - lib/Makefile | 1 - lib/crc32test.c | 852 --------------------------- 16 files changed, 875 deletions(-) delete mode 100644 lib/crc32test.c diff --git a/arch/m68k/configs/amiga_defconfig b/arch/m68k/configs/amiga_defconfig index c705247e7b5b..e5acb7b52550 100644 --- a/arch/m68k/configs/amiga_defconfig +++ b/arch/m68k/configs/amiga_defconfig @@ -604,11 +604,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/apollo_defconfig b/arch/m68k/configs/apollo_defconfig index 6d62b9187a58..89fc22636bb5 100644 --- a/arch/m68k/configs/apollo_defconfig +++ b/arch/m68k/configs/apollo_defconfig @@ -561,11 +561,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/atari_defconfig b/arch/m68k/configs/atari_defconfig index c3c644df852d..9dfba6488b72 100644 --- a/arch/m68k/configs/atari_defconfig +++ b/arch/m68k/configs/atari_defconfig @@ -581,11 +581,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/bvme6000_defconfig b/arch/m68k/configs/bvme6000_defconfig index 20261f819691..5250447e249b 100644 --- a/arch/m68k/configs/bvme6000_defconfig +++ b/arch/m68k/configs/bvme6000_defconfig @@ -553,11 +553,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/hp300_defconfig b/arch/m68k/configs/hp300_defconfig index ce4fe93a0f70..0f99307f9caf 100644 --- a/arch/m68k/configs/hp300_defconfig +++ b/arch/m68k/configs/hp300_defconfig @@ -563,11 +563,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig index 040ae75f47c3..36e5f493654a 100644 --- a/arch/m68k/configs/mac_defconfig +++ b/arch/m68k/configs/mac_defconfig @@ -580,11 +580,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig index 20d877cb4e30..382b0e2e20dc 100644 --- a/arch/m68k/configs/multi_defconfig +++ b/arch/m68k/configs/multi_defconfig @@ -667,11 +667,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/mvme147_defconfig b/arch/m68k/configs/mvme147_defconfig index 5e1c8d0d3da5..d91ec0cc23c8 100644 --- a/arch/m68k/configs/mvme147_defconfig +++ b/arch/m68k/configs/mvme147_defconfig @@ -553,11 +553,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/mvme16x_defconfig b/arch/m68k/configs/mvme16x_defconfig index 5d1409e6a137..4cde4ee78a85 100644 --- a/arch/m68k/configs/mvme16x_defconfig +++ b/arch/m68k/configs/mvme16x_defconfig @@ -554,11 +554,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/q40_defconfig b/arch/m68k/configs/q40_defconfig index e4c30e2b9bbb..d49c01e591e1 100644 --- a/arch/m68k/configs/q40_defconfig +++ b/arch/m68k/configs/q40_defconfig @@ -570,11 +570,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/sun3_defconfig b/arch/m68k/configs/sun3_defconfig index 980843a9ea1e..468f2545b93e 100644 --- a/arch/m68k/configs/sun3_defconfig +++ b/arch/m68k/configs/sun3_defconfig @@ -551,11 +551,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/m68k/configs/sun3x_defconfig b/arch/m68k/configs/sun3x_defconfig index 38681cc6b598..ea38b1f2453d 100644 --- a/arch/m68k/configs/sun3x_defconfig +++ b/arch/m68k/configs/sun3x_defconfig @@ -551,11 +551,10 @@ CONFIG_CRYPTO_USER_API_HASH=m CONFIG_CRYPTO_USER_API_SKCIPHER=m CONFIG_CRYPTO_USER_API_RNG=m CONFIG_CRYPTO_USER_API_AEAD=m # CONFIG_CRYPTO_HW is not set CONFIG_PRIME_NUMBERS=m -CONFIG_CRC32_SELFTEST=m CONFIG_XZ_DEC_TEST=m CONFIG_GLOB_SELFTEST=m # CONFIG_SECTION_MISMATCH_WARN_ONLY is not set CONFIG_MAGIC_SYSRQ=y CONFIG_TEST_LOCKUP=m diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig index f2a149b4fafd..931c0a974ed8 100644 --- a/arch/s390/configs/debug_defconfig +++ b/arch/s390/configs/debug_defconfig @@ -815,11 +815,10 @@ CONFIG_CRYPTO_PAES_S390=m CONFIG_CRYPTO_DEV_VIRTIO=m CONFIG_SYSTEM_BLACKLIST_KEYRING=y CONFIG_CORDIC=m CONFIG_CRYPTO_LIB_CURVE25519=m CONFIG_CRYPTO_LIB_CHACHA20POLY1305=m -CONFIG_CRC32_SELFTEST=y CONFIG_CRC4=m CONFIG_CRC7=m CONFIG_CRC8=m CONFIG_RANDOM32_SELFTEST=y CONFIG_XZ_DEC_MICROLZMA=y diff --git a/lib/Kconfig b/lib/Kconfig index e52a38d8d783..a78d22c6507f 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -221,19 +221,10 @@ config CRC32 functions require M here. config ARCH_HAS_CRC32 bool -config CRC32_SELFTEST - tristate "CRC32 perform self test on init" - depends on CRC32 - help - This option enables the CRC32 library functions to perform a - self test on initialization. The self test computes crc32_le - and crc32_be over byte strings with random alignment and length - and computes the total elapsed time and number of bytes processed. - choice prompt "CRC32 implementation" depends on CRC32 default CRC32_IMPL_ARCH_PLUS_SLICEBY8 if ARCH_HAS_CRC32 default CRC32_IMPL_SLICEBY8 if !ARCH_HAS_CRC32 diff --git a/lib/Makefile b/lib/Makefile index 34f4d61e3cf7..d5cfc7afbbb8 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -162,11 +162,10 @@ obj-$(CONFIG_CRC_CCITT) += crc-ccitt.o obj-$(CONFIG_CRC16) += crc16.o obj-$(CONFIG_CRC_T10DIF)+= crc-t10dif.o obj-$(CONFIG_CRC_ITU_T) += crc-itu-t.o obj-$(CONFIG_CRC32) += crc32.o obj-$(CONFIG_CRC64) += crc64.o -obj-$(CONFIG_CRC32_SELFTEST) += crc32test.o obj-$(CONFIG_CRC4) += crc4.o obj-$(CONFIG_CRC7) += crc7.o obj-$(CONFIG_CRC8) += crc8.o obj-$(CONFIG_CRC64_ROCKSOFT) += crc64-rocksoft.o obj-$(CONFIG_XXHASH) += xxhash.o diff --git a/lib/crc32test.c b/lib/crc32test.c deleted file mode 100644 index 9b4af79412c4..000000000000 --- a/lib/crc32test.c +++ /dev/null @@ -1,852 +0,0 @@ -/* - * Aug 8, 2011 Bob Pearson with help from Joakim Tjernlund and George Spelvin - * cleaned up code to current version of sparse and added the slicing-by-8 - * algorithm to the closely similar existing slicing-by-4 algorithm. - * - * Oct 15, 2000 Matt Domsch - * Nicer crc32 functions/docs submitted by linux@horizon.com. Thanks! - * Code was from the public domain, copyright abandoned. Code was - * subsequently included in the kernel, thus was re-licensed under the - * GNU GPL v2. - * - * Oct 12, 2000 Matt Domsch - * Same crc32 function was used in 5 other places in the kernel. - * I made one version, and deleted the others. - * There are various incantations of crc32(). Some use a seed of 0 or ~0. - * Some xor at the end with ~0. The generic crc32() function takes - * seed as an argument, and doesn't xor at the end. Then individual - * users can do whatever they need. - * drivers/net/smc9194.c uses seed ~0, doesn't xor with ~0. - * fs/jffs2 uses seed 0, doesn't xor with ~0. - * fs/partitions/efi.c uses seed ~0, xor's with ~0. - * - * This source code is licensed under the GNU General Public License, - * Version 2. See the file COPYING for more details. - */ - -#include -#include -#include - -#include "crc32defs.h" - -/* 4096 random bytes */ -static u8 const __aligned(8) test_buf[] __initconst = -{ - 0x5b, 0x85, 0x21, 0xcb, 0x09, 0x68, 0x7d, 0x30, - 0xc7, 0x69, 0xd7, 0x30, 0x92, 0xde, 0x59, 0xe4, - 0xc9, 0x6e, 0x8b, 0xdb, 0x98, 0x6b, 0xaa, 0x60, - 0xa8, 0xb5, 0xbc, 0x6c, 0xa9, 0xb1, 0x5b, 0x2c, - 0xea, 0xb4, 0x92, 0x6a, 0x3f, 0x79, 0x91, 0xe4, - 0xe9, 0x70, 0x51, 0x8c, 0x7f, 0x95, 0x6f, 0x1a, - 0x56, 0xa1, 0x5c, 0x27, 0x03, 0x67, 0x9f, 0x3a, - 0xe2, 0x31, 0x11, 0x29, 0x6b, 0x98, 0xfc, 0xc4, - 0x53, 0x24, 0xc5, 0x8b, 0xce, 0x47, 0xb2, 0xb9, - 0x32, 0xcb, 0xc1, 0xd0, 0x03, 0x57, 0x4e, 0xd4, - 0xe9, 0x3c, 0xa1, 0x63, 0xcf, 0x12, 0x0e, 0xca, - 0xe1, 0x13, 0xd1, 0x93, 0xa6, 0x88, 0x5c, 0x61, - 0x5b, 0xbb, 0xf0, 0x19, 0x46, 0xb4, 0xcf, 0x9e, - 0xb6, 0x6b, 0x4c, 0x3a, 0xcf, 0x60, 0xf9, 0x7a, - 0x8d, 0x07, 0x63, 0xdb, 0x40, 0xe9, 0x0b, 0x6f, - 0xad, 0x97, 0xf1, 0xed, 0xd0, 0x1e, 0x26, 0xfd, - 0xbf, 0xb7, 0xc8, 0x04, 0x94, 0xf8, 0x8b, 0x8c, - 0xf1, 0xab, 0x7a, 0xd4, 0xdd, 0xf3, 0xe8, 0x88, - 0xc3, 0xed, 0x17, 0x8a, 0x9b, 0x40, 0x0d, 0x53, - 0x62, 0x12, 0x03, 0x5f, 0x1b, 0x35, 0x32, 0x1f, - 0xb4, 0x7b, 0x93, 0x78, 0x0d, 0xdb, 0xce, 0xa4, - 0xc0, 0x47, 0xd5, 0xbf, 0x68, 0xe8, 0x5d, 0x74, - 0x8f, 0x8e, 0x75, 0x1c, 0xb2, 0x4f, 0x9a, 0x60, - 0xd1, 0xbe, 0x10, 0xf4, 0x5c, 0xa1, 0x53, 0x09, - 0xa5, 0xe0, 0x09, 0x54, 0x85, 0x5c, 0xdc, 0x07, - 0xe7, 0x21, 0x69, 0x7b, 0x8a, 0xfd, 0x90, 0xf1, - 0x22, 0xd0, 0xb4, 0x36, 0x28, 0xe6, 0xb8, 0x0f, - 0x39, 0xde, 0xc8, 0xf3, 0x86, 0x60, 0x34, 0xd2, - 0x5e, 0xdf, 0xfd, 0xcf, 0x0f, 0xa9, 0x65, 0xf0, - 0xd5, 0x4d, 0x96, 0x40, 0xe3, 0xdf, 0x3f, 0x95, - 0x5a, 0x39, 0x19, 0x93, 0xf4, 0x75, 0xce, 0x22, - 0x00, 0x1c, 0x93, 0xe2, 0x03, 0x66, 0xf4, 0x93, - 0x73, 0x86, 0x81, 0x8e, 0x29, 0x44, 0x48, 0x86, - 0x61, 0x7c, 0x48, 0xa3, 0x43, 0xd2, 0x9c, 0x8d, - 0xd4, 0x95, 0xdd, 0xe1, 0x22, 0x89, 0x3a, 0x40, - 0x4c, 0x1b, 0x8a, 0x04, 0xa8, 0x09, 0x69, 0x8b, - 0xea, 0xc6, 0x55, 0x8e, 0x57, 0xe6, 0x64, 0x35, - 0xf0, 0xc7, 0x16, 0x9f, 0x5d, 0x5e, 0x86, 0x40, - 0x46, 0xbb, 0xe5, 0x45, 0x88, 0xfe, 0xc9, 0x63, - 0x15, 0xfb, 0xf5, 0xbd, 0x71, 0x61, 0xeb, 0x7b, - 0x78, 0x70, 0x07, 0x31, 0x03, 0x9f, 0xb2, 0xc8, - 0xa7, 0xab, 0x47, 0xfd, 0xdf, 0xa0, 0x78, 0x72, - 0xa4, 0x2a, 0xe4, 0xb6, 0xba, 0xc0, 0x1e, 0x86, - 0x71, 0xe6, 0x3d, 0x18, 0x37, 0x70, 0xe6, 0xff, - 0xe0, 0xbc, 0x0b, 0x22, 0xa0, 0x1f, 0xd3, 0xed, - 0xa2, 0x55, 0x39, 0xab, 0xa8, 0x13, 0x73, 0x7c, - 0x3f, 0xb2, 0xd6, 0x19, 0xac, 0xff, 0x99, 0xed, - 0xe8, 0xe6, 0xa6, 0x22, 0xe3, 0x9c, 0xf1, 0x30, - 0xdc, 0x01, 0x0a, 0x56, 0xfa, 0xe4, 0xc9, 0x99, - 0xdd, 0xa8, 0xd8, 0xda, 0x35, 0x51, 0x73, 0xb4, - 0x40, 0x86, 0x85, 0xdb, 0x5c, 0xd5, 0x85, 0x80, - 0x14, 0x9c, 0xfd, 0x98, 0xa9, 0x82, 0xc5, 0x37, - 0xff, 0x32, 0x5d, 0xd0, 0x0b, 0xfa, 0xdc, 0x04, - 0x5e, 0x09, 0xd2, 0xca, 0x17, 0x4b, 0x1a, 0x8e, - 0x15, 0xe1, 0xcc, 0x4e, 0x52, 0x88, 0x35, 0xbd, - 0x48, 0xfe, 0x15, 0xa0, 0x91, 0xfd, 0x7e, 0x6c, - 0x0e, 0x5d, 0x79, 0x1b, 0x81, 0x79, 0xd2, 0x09, - 0x34, 0x70, 0x3d, 0x81, 0xec, 0xf6, 0x24, 0xbb, - 0xfb, 0xf1, 0x7b, 0xdf, 0x54, 0xea, 0x80, 0x9b, - 0xc7, 0x99, 0x9e, 0xbd, 0x16, 0x78, 0x12, 0x53, - 0x5e, 0x01, 0xa7, 0x4e, 0xbd, 0x67, 0xe1, 0x9b, - 0x4c, 0x0e, 0x61, 0x45, 0x97, 0xd2, 0xf0, 0x0f, - 0xfe, 0x15, 0x08, 0xb7, 0x11, 0x4c, 0xe7, 0xff, - 0x81, 0x53, 0xff, 0x91, 0x25, 0x38, 0x7e, 0x40, - 0x94, 0xe5, 0xe0, 0xad, 0xe6, 0xd9, 0x79, 0xb6, - 0x92, 0xc9, 0xfc, 0xde, 0xc3, 0x1a, 0x23, 0xbb, - 0xdd, 0xc8, 0x51, 0x0c, 0x3a, 0x72, 0xfa, 0x73, - 0x6f, 0xb7, 0xee, 0x61, 0x39, 0x03, 0x01, 0x3f, - 0x7f, 0x94, 0x2e, 0x2e, 0xba, 0x3a, 0xbb, 0xb4, - 0xfa, 0x6a, 0x17, 0xfe, 0xea, 0xef, 0x5e, 0x66, - 0x97, 0x3f, 0x32, 0x3d, 0xd7, 0x3e, 0xb1, 0xf1, - 0x6c, 0x14, 0x4c, 0xfd, 0x37, 0xd3, 0x38, 0x80, - 0xfb, 0xde, 0xa6, 0x24, 0x1e, 0xc8, 0xca, 0x7f, - 0x3a, 0x93, 0xd8, 0x8b, 0x18, 0x13, 0xb2, 0xe5, - 0xe4, 0x93, 0x05, 0x53, 0x4f, 0x84, 0x66, 0xa7, - 0x58, 0x5c, 0x7b, 0x86, 0x52, 0x6d, 0x0d, 0xce, - 0xa4, 0x30, 0x7d, 0xb6, 0x18, 0x9f, 0xeb, 0xff, - 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0x16, 0x35, 0x9a, 0x11, 0xb8, 0xc7, 0xc1, 0x8c, - 0xc6, 0x10, 0x8d, 0x2f, 0x63, 0x4a, 0xa7, 0x57, - 0x3a, 0x51, 0xd6, 0x32, 0x2d, 0x64, 0x72, 0xd4, - 0x66, 0xdc, 0x10, 0xa6, 0x67, 0xd6, 0x04, 0x23, - 0x9d, 0x0a, 0x11, 0x77, 0xdd, 0x37, 0x94, 0x17, - 0x3c, 0xbf, 0x8b, 0x65, 0xb0, 0x2e, 0x5e, 0x66, - 0x47, 0x64, 0xac, 0xdd, 0xf0, 0x84, 0xfd, 0x39, - 0xfa, 0x15, 0x5d, 0xef, 0xae, 0xca, 0xc1, 0x36, - 0xa7, 0x5c, 0xbf, 0xc7, 0x08, 0xc2, 0x66, 0x00, - 0x74, 0x74, 0x4e, 0x27, 0x3f, 0x55, 0x8a, 0xb7, - 0x38, 0x66, 0x83, 0x6d, 0xcf, 0x99, 0x9e, 0x60, - 0x8f, 0xdd, 0x2e, 0x62, 0x22, 0x0e, 0xef, 0x0c, - 0x98, 0xa7, 0x85, 0x74, 0x3b, 0x9d, 0xec, 0x9e, - 0xa9, 0x19, 0x72, 0xa5, 0x7f, 0x2c, 0x39, 0xb7, - 0x7d, 0xb7, 0xf1, 0x12, 0x65, 0x27, 0x4b, 0x5a, - 0xde, 0x17, 0xfe, 0xad, 0x44, 0xf3, 0x20, 0x4d, - 0xfd, 0xe4, 0x1f, 0xb5, 0x81, 0xb0, 0x36, 0x37, - 0x08, 0x6f, 0xc3, 0x0c, 0xe9, 0x85, 0x98, 0x82, - 0xa9, 0x62, 0x0c, 0xc4, 0x97, 0xc0, 0x50, 0xc8, - 0xa7, 0x3c, 0x50, 0x9f, 0x43, 0xb9, 0xcd, 0x5e, - 0x4d, 0xfa, 0x1c, 0x4b, 0x0b, 0xa9, 0x98, 0x85, - 0x38, 0x92, 0xac, 0x8d, 0xe4, 0xad, 0x9b, 0x98, - 0xab, 0xd9, 0x38, 0xac, 0x62, 0x52, 0xa3, 0x22, - 0x63, 0x0f, 0xbf, 0x95, 0x48, 0xdf, 0x69, 0xe7, - 0x8b, 0x33, 0xd5, 0xb2, 0xbd, 0x05, 0x49, 0x49, - 0x9d, 0x57, 0x73, 0x19, 0x33, 0xae, 0xfa, 0x33, - 0xf1, 0x19, 0xa8, 0x80, 0xce, 0x04, 0x9f, 0xbc, - 0x1d, 0x65, 0x82, 0x1b, 0xe5, 0x3a, 0x51, 0xc8, - 0x1c, 0x21, 0xe3, 0x5d, 0xf3, 0x7d, 0x9b, 0x2f, - 0x2c, 0x1d, 0x4a, 0x7f, 0x9b, 0x68, 0x35, 0xa3, - 0xb2, 0x50, 0xf7, 0x62, 0x79, 0xcd, 0xf4, 0x98, - 0x4f, 0xe5, 0x63, 0x7c, 0x3e, 0x45, 0x31, 0x8c, - 0x16, 0xa0, 0x12, 0xc8, 0x58, 0xce, 0x39, 0xa6, - 0xbc, 0x54, 0xdb, 0xc5, 0xe0, 0xd5, 0xba, 0xbc, - 0xb9, 0x04, 0xf4, 0x8d, 0xe8, 0x2f, 0x15, 0x9d, -}; - -/* 100 test cases */ -static struct crc_test { - u32 crc; /* random starting crc */ - u32 start; /* random 6 bit offset in buf */ - u32 length; /* random 11 bit length of test */ - u32 crc_le; /* expected crc32_le result */ - u32 crc_be; /* expected crc32_be result */ - u32 crc32c_le; /* expected crc32c_le result */ -} const test[] __initconst = -{ - {0x674bf11d, 0x00000038, 0x00000542, 0x0af6d466, 0xd8b6e4c1, 0xf6e93d6c}, - {0x35c672c6, 0x0000003a, 0x000001aa, 0xc6d3dfba, 0x28aaf3ad, 0x0fe92aca}, - {0x496da28e, 0x00000039, 0x000005af, 0xd933660f, 0x5d57e81f, 0x52e1ebb8}, - {0x09a9b90e, 0x00000027, 0x000001f8, 0xb45fe007, 0xf45fca9a, 0x0798af9a}, - {0xdc97e5a9, 0x00000025, 0x000003b6, 0xf81a3562, 0xe0126ba2, 0x18eb3152}, - {0x47c58900, 0x0000000a, 0x000000b9, 0x8e58eccf, 0xf3afc793, 0xd00d08c7}, - {0x292561e8, 0x0000000c, 0x00000403, 0xa2ba8aaf, 0x0b797aed, 0x8ba966bc}, - {0x415037f6, 0x00000003, 0x00000676, 0xa17d52e8, 0x7f0fdf35, 0x11d694a2}, - {0x3466e707, 0x00000026, 0x00000042, 0x258319be, 0x75c484a2, 0x6ab3208d}, - {0xafd1281b, 0x00000023, 0x000002ee, 0x4428eaf8, 0x06c7ad10, 0xba4603c5}, - {0xd3857b18, 0x00000028, 0x000004a2, 0x5c430821, 0xb062b7cb, 0xe6071c6f}, - {0x1d825a8f, 0x0000002b, 0x0000050b, 0xd2c45f0c, 0xd68634e0, 0x179ec30a}, - {0x5033e3bc, 0x0000000b, 0x00000078, 0xa3ea4113, 0xac6d31fb, 0x0903beb8}, - {0x94f1fb5e, 0x0000000f, 0x000003a2, 0xfbfc50b1, 0x3cfe50ed, 0x6a7cb4fa}, - {0xc9a0fe14, 0x00000009, 0x00000473, 0x5fb61894, 0x87070591, 0xdb535801}, - {0x88a034b1, 0x0000001c, 0x000005ad, 0xc1b16053, 0x46f95c67, 0x92bed597}, - {0xf0f72239, 0x00000020, 0x0000026d, 0xa6fa58f3, 0xf8c2c1dd, 0x192a3f1b}, - {0xcc20a5e3, 0x0000003b, 0x0000067a, 0x7740185a, 0x308b979a, 0xccbaec1a}, - {0xce589c95, 0x0000002b, 0x00000641, 0xd055e987, 0x40aae25b, 0x7eabae4d}, - {0x78edc885, 0x00000035, 0x000005be, 0xa39cb14b, 0x035b0d1f, 0x28c72982}, - {0x9d40a377, 0x0000003b, 0x00000038, 0x1f47ccd2, 0x197fbc9d, 0xc3cd4d18}, - {0x703d0e01, 0x0000003c, 0x000006f1, 0x88735e7c, 0xfed57c5a, 0xbca8f0e7}, - {0x776bf505, 0x0000000f, 0x000005b2, 0x5cc4fc01, 0xf32efb97, 0x713f60b3}, - {0x4a3e7854, 0x00000027, 0x000004b8, 0x8d923c82, 0x0cbfb4a2, 0xebd08fd5}, - {0x209172dd, 0x0000003b, 0x00000356, 0xb89e9c2b, 0xd7868138, 0x64406c59}, - {0x3ba4cc5b, 0x0000002f, 0x00000203, 0xe51601a9, 0x5b2a1032, 0x7421890e}, - {0xfc62f297, 0x00000000, 0x00000079, 0x71a8e1a2, 0x5d88685f, 0xe9347603}, - {0x64280b8b, 0x00000016, 0x000007ab, 0x0fa7a30c, 0xda3a455f, 0x1bef9060}, - {0x97dd724b, 0x00000033, 0x000007ad, 0x5788b2f4, 0xd7326d32, 0x34720072}, - {0x61394b52, 0x00000035, 0x00000571, 0xc66525f1, 0xcabe7fef, 0x48310f59}, - {0x29b4faff, 0x00000024, 0x0000006e, 0xca13751e, 0x993648e0, 0x783a4213}, - {0x29bfb1dc, 0x0000000b, 0x00000244, 0x436c43f7, 0x429f7a59, 0x9e8efd41}, - {0x86ae934b, 0x00000035, 0x00000104, 0x0760ec93, 0x9cf7d0f4, 0xfc3d34a5}, - {0xc4c1024e, 0x0000002e, 0x000006b1, 0x6516a3ec, 0x19321f9c, 0x17a52ae2}, - {0x3287a80a, 0x00000026, 0x00000496, 0x0b257eb1, 0x754ebd51, 0x886d935a}, - {0xa4db423e, 0x00000023, 0x0000045d, 0x9b3a66dc, 0x873e9f11, 0xeaaeaeb2}, - {0x7a1078df, 0x00000015, 0x0000014a, 0x8c2484c5, 0x6a628659, 0x8e900a4b}, - {0x6048bd5b, 0x00000006, 0x0000006a, 0x897e3559, 0xac9961af, 0xd74662b1}, - {0xd8f9ea20, 0x0000003d, 0x00000277, 0x60eb905b, 0xed2aaf99, 0xd26752ba}, - {0xea5ec3b4, 0x0000002a, 0x000004fe, 0x869965dc, 0x6c1f833b, 0x8b1fcd62}, - {0x2dfb005d, 0x00000016, 0x00000345, 0x6a3b117e, 0xf05e8521, 0xf54342fe}, - {0x5a214ade, 0x00000020, 0x000005b6, 0x467f70be, 0xcb22ccd3, 0x5b95b988}, - {0xf0ab9cca, 0x00000032, 0x00000515, 0xed223df3, 0x7f3ef01d, 0x2e1176be}, - {0x91b444f9, 0x0000002e, 0x000007f8, 0x84e9a983, 0x5676756f, 0x66120546}, - {0x1b5d2ddb, 0x0000002e, 0x0000012c, 0xba638c4c, 0x3f42047b, 0xf256a5cc}, - {0xd824d1bb, 0x0000003a, 0x000007b5, 0x6288653b, 0x3a3ebea0, 0x4af1dd69}, - {0x0470180c, 0x00000034, 0x000001f0, 0x9d5b80d6, 0x3de08195, 0x56f0a04a}, - {0xffaa3a3f, 0x00000036, 0x00000299, 0xf3a82ab8, 0x53e0c13d, 0x74f6b6b2}, - {0x6406cfeb, 0x00000023, 0x00000600, 0xa920b8e8, 0xe4e2acf4, 0x085951fd}, - {0xb24aaa38, 0x0000003e, 0x000004a1, 0x657cc328, 0x5077b2c3, 0xc65387eb}, - {0x58b2ab7c, 0x00000039, 0x000002b4, 0x3a17ee7e, 0x9dcb3643, 0x1ca9257b}, - {0x3db85970, 0x00000006, 0x000002b6, 0x95268b59, 0xb9812c10, 0xfd196d76}, - {0x857830c5, 0x00000003, 0x00000590, 0x4ef439d5, 0xf042161d, 0x5ef88339}, - {0xe1fcd978, 0x0000003e, 0x000007d8, 0xae8d8699, 0xce0a1ef5, 0x2c3714d9}, - {0xb982a768, 0x00000016, 0x000006e0, 0x62fad3df, 0x5f8a067b, 0x58576548}, - {0x1d581ce8, 0x0000001e, 0x0000058b, 0xf0f5da53, 0x26e39eee, 0xfd7c57de}, - {0x2456719b, 0x00000025, 0x00000503, 0x4296ac64, 0xd50e4c14, 0xd5fedd59}, - {0xfae6d8f2, 0x00000000, 0x0000055d, 0x057fdf2e, 0x2a31391a, 0x1cc3b17b}, - {0xcba828e3, 0x00000039, 0x000002ce, 0xe3f22351, 0x8f00877b, 0x270eed73}, - {0x13d25952, 0x0000000a, 0x0000072d, 0x76d4b4cc, 0x5eb67ec3, 0x91ecbb11}, - {0x0342be3f, 0x00000015, 0x00000599, 0xec75d9f1, 0x9d4d2826, 0x05ed8d0c}, - {0xeaa344e0, 0x00000014, 0x000004d8, 0x72a4c981, 0x2064ea06, 0x0b09ad5b}, - {0xbbb52021, 0x0000003b, 0x00000272, 0x04af99fc, 0xaf042d35, 0xf8d511fb}, - {0xb66384dc, 0x0000001d, 0x000007fc, 0xd7629116, 0x782bd801, 0x5ad832cc}, - {0x616c01b6, 0x00000022, 0x000002c8, 0x5b1dab30, 0x783ce7d2, 0x1214d196}, - {0xce2bdaad, 0x00000016, 0x0000062a, 0x932535c8, 0x3f02926d, 0x5747218a}, - {0x00fe84d7, 0x00000005, 0x00000205, 0x850e50aa, 0x753d649c, 0xde8f14de}, - {0xbebdcb4c, 0x00000006, 0x0000055d, 0xbeaa37a2, 0x2d8c9eba, 0x3563b7b9}, - {0xd8b1a02a, 0x00000010, 0x00000387, 0x5017d2fc, 0x503541a5, 0x071475d0}, - {0x3b96cad2, 0x00000036, 0x00000347, 0x1d2372ae, 0x926cd90b, 0x54c79d60}, - {0xc94c1ed7, 0x00000005, 0x0000038b, 0x9e9fdb22, 0x144a9178, 0x4c53eee6}, - {0x1aad454e, 0x00000025, 0x000002b2, 0xc3f6315c, 0x5c7a35b3, 0x10137a3c}, - {0xa4fec9a6, 0x00000000, 0x000006d6, 0x90be5080, 0xa4107605, 0xaa9d6c73}, - {0x1bbe71e2, 0x0000001f, 0x000002fd, 0x4e504c3b, 0x284ccaf1, 0xb63d23e7}, - {0x4201c7e4, 0x00000002, 0x000002b7, 0x7822e3f9, 0x0cc912a9, 0x7f53e9cf}, - {0x23fddc96, 0x00000003, 0x00000627, 0x8a385125, 0x07767e78, 0x13c1cd83}, - {0xd82ba25c, 0x00000016, 0x0000063e, 0x98e4148a, 0x283330c9, 0x49ff5867}, - {0x786f2032, 0x0000002d, 0x0000060f, 0xf201600a, 0xf561bfcd, 0x8467f211}, - {0xfebe4e1f, 0x0000002a, 0x000004f2, 0x95e51961, 0xfd80dcab, 0x3f9683b2}, - {0x1a6e0a39, 0x00000008, 0x00000672, 0x8af6c2a5, 0x78dd84cb, 0x76a3f874}, - {0x56000ab8, 0x0000000e, 0x000000e5, 0x36bacb8f, 0x22ee1f77, 0x863b702f}, - {0x4717fe0c, 0x00000000, 0x000006ec, 0x8439f342, 0x5c8e03da, 0xdc6c58ff}, - {0xd5d5d68e, 0x0000003c, 0x000003a3, 0x46fff083, 0x177d1b39, 0x0622cc95}, - {0xc25dd6c6, 0x00000024, 0x000006c0, 0x5ceb8eb4, 0x892b0d16, 0xe85605cd}, - {0xe9b11300, 0x00000023, 0x00000683, 0x07a5d59a, 0x6c6a3208, 0x31da5f06}, - {0x95cd285e, 0x00000001, 0x00000047, 0x7b3a4368, 0x0202c07e, 0xa1f2e784}, - {0xd9245a25, 0x0000001e, 0x000003a6, 0xd33c1841, 0x1936c0d5, 0xb07cc616}, - {0x103279db, 0x00000006, 0x0000039b, 0xca09b8a0, 0x77d62892, 0xbf943b6c}, - {0x1cba3172, 0x00000027, 0x000001c8, 0xcb377194, 0xebe682db, 0x2c01af1c}, - {0x8f613739, 0x0000000c, 0x000001df, 0xb4b0bc87, 0x7710bd43, 0x0fe5f56d}, - {0x1c6aa90d, 0x0000001b, 0x0000053c, 0x70559245, 0xda7894ac, 0xf8943b2d}, - {0xaabe5b93, 0x0000003d, 0x00000715, 0xcdbf42fa, 0x0c3b99e7, 0xe4d89272}, - {0xf15dd038, 0x00000006, 0x000006db, 0x6e104aea, 0x8d5967f2, 0x7c2f6bbb}, - {0x584dd49c, 0x00000020, 0x000007bc, 0x36b6cfd6, 0xad4e23b2, 0xabbf388b}, - {0x5d8c9506, 0x00000020, 0x00000470, 0x4c62378e, 0x31d92640, 0x1dca1f4e}, - {0xb80d17b0, 0x00000032, 0x00000346, 0x22a5bb88, 0x9a7ec89f, 0x5c170e23}, - {0xdaf0592e, 0x00000023, 0x000007b0, 0x3cab3f99, 0x9b1fdd99, 0xc0e9d672}, - {0x4793cc85, 0x0000000d, 0x00000706, 0xe82e04f6, 0xed3db6b7, 0xc18bdc86}, - {0x82ebf64e, 0x00000009, 0x000007c3, 0x69d590a9, 0x9efa8499, 0xa874fcdd}, - {0xb18a0319, 0x00000026, 0x000007db, 0x1cf98dcc, 0x8fa9ad6a, 0x9dc0bb48}, -}; - -#include - -static int __init crc32c_test(void) -{ - int i; - int errors = 0; - int bytes = 0; - u64 nsec; - unsigned long flags; - - /* keep static to prevent cache warming code from - * getting eliminated by the compiler */ - static u32 crc; - - /* pre-warm the cache */ - for (i = 0; i < 100; i++) { - bytes += test[i].length; - - crc ^= __crc32c_le(test[i].crc, test_buf + - test[i].start, test[i].length); - } - - /* reduce OS noise */ - local_irq_save(flags); - - nsec = ktime_get_ns(); - for (i = 0; i < 100; i++) { - if (test[i].crc32c_le != __crc32c_le(test[i].crc, test_buf + - test[i].start, test[i].length)) - errors++; - } - nsec = ktime_get_ns() - nsec; - - local_irq_restore(flags); - - pr_info("crc32c: CRC_LE_BITS = %d\n", CRC_LE_BITS); - - if (errors) - pr_warn("crc32c: %d self tests failed\n", errors); - else { - pr_info("crc32c: self tests passed, processed %d bytes in %lld nsec\n", - bytes, nsec); - } - - return 0; -} - -static int __init crc32c_combine_test(void) -{ - int i, j; - int errors = 0, runs = 0; - - for (i = 0; i < 10; i++) { - u32 crc_full; - - crc_full = __crc32c_le(test[i].crc, test_buf + test[i].start, - test[i].length); - for (j = 0; j <= test[i].length; ++j) { - u32 crc1, crc2; - u32 len1 = j, len2 = test[i].length - j; - - crc1 = __crc32c_le(test[i].crc, test_buf + - test[i].start, len1); - crc2 = __crc32c_le(0, test_buf + test[i].start + - len1, len2); - - if (!(crc_full == __crc32c_le_combine(crc1, crc2, len2) && - crc_full == test[i].crc32c_le)) - errors++; - runs++; - cond_resched(); - } - } - - if (errors) - pr_warn("crc32c_combine: %d/%d self tests failed\n", errors, runs); - else - pr_info("crc32c_combine: %d self tests passed\n", runs); - - return 0; -} - -static int __init crc32_test(void) -{ - int i; - int errors = 0; - int bytes = 0; - u64 nsec; - unsigned long flags; - - /* keep static to prevent cache warming code from - * getting eliminated by the compiler */ - static u32 crc; - - /* pre-warm the cache */ - for (i = 0; i < 100; i++) { - bytes += 2*test[i].length; - - crc ^= crc32_le(test[i].crc, test_buf + - test[i].start, test[i].length); - - crc ^= crc32_be(test[i].crc, test_buf + - test[i].start, test[i].length); - } - - /* reduce OS noise */ - local_irq_save(flags); - - nsec = ktime_get_ns(); - for (i = 0; i < 100; i++) { - if (test[i].crc_le != crc32_le(test[i].crc, test_buf + - test[i].start, test[i].length)) - errors++; - - if (test[i].crc_be != crc32_be(test[i].crc, test_buf + - test[i].start, test[i].length)) - errors++; - } - nsec = ktime_get_ns() - nsec; - - local_irq_restore(flags); - - pr_info("crc32: CRC_LE_BITS = %d, CRC_BE BITS = %d\n", - CRC_LE_BITS, CRC_BE_BITS); - - if (errors) - pr_warn("crc32: %d self tests failed\n", errors); - else { - pr_info("crc32: self tests passed, processed %d bytes in %lld nsec\n", - bytes, nsec); - } - - return 0; -} - -static int __init crc32_combine_test(void) -{ - int i, j; - int errors = 0, runs = 0; - - for (i = 0; i < 10; i++) { - u32 crc_full; - - crc_full = crc32_le(test[i].crc, test_buf + test[i].start, - test[i].length); - for (j = 0; j <= test[i].length; ++j) { - u32 crc1, crc2; - u32 len1 = j, len2 = test[i].length - j; - - crc1 = crc32_le(test[i].crc, test_buf + - test[i].start, len1); - crc2 = crc32_le(0, test_buf + test[i].start + - len1, len2); - - if (!(crc_full == crc32_le_combine(crc1, crc2, len2) && - crc_full == test[i].crc_le)) - errors++; - runs++; - cond_resched(); - } - } - - if (errors) - pr_warn("crc32_combine: %d/%d self tests failed\n", errors, runs); - else - pr_info("crc32_combine: %d self tests passed\n", runs); - - return 0; -} - -static int __init crc32test_init(void) -{ - crc32_test(); - crc32c_test(); - - crc32_combine_test(); - crc32c_combine_test(); - - return 0; -} - -static void __exit crc32_exit(void) -{ -} - -module_init(crc32test_init); -module_exit(crc32_exit); - -MODULE_AUTHOR("Matt Domsch "); -MODULE_DESCRIPTION("CRC32 selftest"); -MODULE_LICENSE("GPL"); From patchwork Mon Dec 2 01:20:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 846730 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 247D513E40F; Mon, 2 Dec 2024 01:21:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102494; cv=none; b=UtSFcPJx7GF9pRuCa77cuir3MYYCBhNRc3zFnMxk1FMSc6nDcjwdGPnY/xW3KnfEW1gginbMw+wmh0VA3HjK40e1tbQiNgpWsSnxzoRPQFEGuJuFWWW8BCteUT/rms8QcGvxPnNgWKZ5h/b+pNHiVTHZRaCbp3aeFYOC5BrKkA0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733102494; c=relaxed/simple; bh=tOkBM9OKj+QnnDmg3KXsNuWzGOUW1YaMaa8G27/37Kk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TxeqPf+Bejk5DQUqv2rUvnGMnfaqMnESChFTYxx6bhs2ix+K8X4Xo1PeplWWGF6EDVZn8iDaWoseDWtFL3bM8CfeYfaK0lWVONuiv+KB3ZNhEpDZDo7ZVZSj60IjzvxdI5cy/JSljZ6Dx6juzS6RT4sizMpcGFsz+vPtkxZgQcM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mhYadkzk; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mhYadkzk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 496B3C4CEE1; Mon, 2 Dec 2024 01:21:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1733102493; bh=tOkBM9OKj+QnnDmg3KXsNuWzGOUW1YaMaa8G27/37Kk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mhYadkzk8Wpm1ITszh4LwCoo6RCymijkaws9sU9g/KGsy9DSpWRmbKngnVBniKYZv ErPb16+qEvaUkykp4VtBfrvOfVTPr64cYgZw2glt62J0whPQAGvPo9CTqugNtHLf7c bR6tfEyyt9k48DlViebHmXiT/K8l+bd6vLUVwdrY6vcmczq5K5kKDEUS4ny5en5mgQ j5i62pwZxIzqgUh0vTPC6/rv0sbFcxGUkXFPlAfdlelqDdzIhTSlk643ODVxFPEpTW UOUjKNwH5bTSyGAWLP2m00SXeKqdb65SxhRJUtEBjn+EfI5V1uAWfpK3gMgnUe3no5 t8LBK7cKrA3RA== From: Eric Biggers To: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, Zhihang Shao , Ard Biesheuvel , "Martin K. Petersen" Subject: [PATCH v2 12/12] MAINTAINERS: add entry for CRC library Date: Sun, 1 Dec 2024 17:20:56 -0800 Message-ID: <20241202012056.209768-13-ebiggers@kernel.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20241202012056.209768-1-ebiggers@kernel.org> References: <20241202012056.209768-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers I am volunteering to maintain the kernel's CRC library code. Ard has volunteered to be a reviewer. Reviewed-by: Ard Biesheuvel Reviewed-by: Martin K. Petersen Signed-off-by: Eric Biggers --- MAINTAINERS | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 1e930c7a58b1..b7eb0c0a9c1c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6054,10 +6054,21 @@ CRAMFS FILESYSTEM M: Nicolas Pitre S: Maintained F: Documentation/filesystems/cramfs.rst F: fs/cramfs/ +CRC LIBRARY +M: Eric Biggers +R: Ard Biesheuvel +L: linux-crypto@vger.kernel.org +S: Maintained +T: git https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git crc-next +F: Documentation/staging/crc* +F: arch/*/lib/crc* +F: include/linux/crc* +F: lib/crc* + CREATIVE SB0540 M: Bastien Nocera L: linux-input@vger.kernel.org S: Maintained F: drivers/hid/hid-creative-sb0540.c