From patchwork Sat Apr 5 18:26:05 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 14039221 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 EEC87C36010 for ; Sat, 5 Apr 2025 18:43:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=WzivNS10NrpISCk5PJ1p/U97/3gZKzHxjSqukklIY2g=; b=lyVLxC9JbuBIX/QfOBcv2+pqAK 91ItINX0c/ate3vzI6D88t/w02NQSqhdpLzZXAJltjn59pf2AaMH7fk79aEcnPi0bNsaT8rZOjYno tcdVhzTdT98mKUZcM2m5kW/T6myeXbhkgOCy0XShY77wMymBEI6HALA8llA/5RAoBMB4EX5PzLBxZ IADta/ZTarVU+fdRGKDv6ZwjLqB7ocNEfnqZsHYTdC5/ktfe6kAE7RIoeHayIFl1Vnqf8NbDFyW6j 2Jkxm3o3GaIPuQf863Z5kdSEkjOvKRr0S82eu0NdSEJ/N/SC6nbLsgkLwzAtGvdXkbYcACgW89NRN Nmhk2rXQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1u18Ug-0000000ENl8-2JrT; Sat, 05 Apr 2025 18:43:50 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1u18IB-0000000ELe9-3mWd; Sat, 05 Apr 2025 18:30:57 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 4DDE45C4D95; Sat, 5 Apr 2025 18:28:38 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC72FC4CEE4; Sat, 5 Apr 2025 18:30:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743877855; bh=3GecDYJPP+f/otGdToWIa9TB2f+in47vXsMRPZd3kDo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BMvkeX7PDVea3p39UTaGrF7AVBRn2MBPChS6OFi6ciRP0KDkF+rJawry/gPZGS2bo kSnVQBXr669M4rcIWxd+LCz6OGQ6eqBMUF6SrycfjCv9AajLSUPLCfMApP4PVQB6BY BCtfS7MzDpRRM0oxD0s5frAPm8YZx8Q0dfuwUWekYJaQPMfkO/bWdv8o9Kkm772t+I rxLq5WBMke1+sdyDTXtkWqynjbBAaId1V5cQvdL3Vll9/u6CVRAAKb8w3NmLb6CPZv Aj/VU9CLMWXaFtbR0F06zN2W4xfw/eecvkTamGE9xGSRM+MoJEkfsE8u2L0QyGZAbe npBiy5Aho48zg== From: Eric Biggers To: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , "Jason A . Donenfeld " , Linus Torvalds Subject: [PATCH 5/9] crypto: mips/chacha - remove the skcipher algorithms Date: Sat, 5 Apr 2025 11:26:05 -0700 Message-ID: <20250405182609.404216-6-ebiggers@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250405182609.404216-1-ebiggers@kernel.org> References: <20250405182609.404216-1-ebiggers@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250405_113056_043393_F30A5D7F X-CRM114-Status: GOOD ( 11.42 ) 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 From: Eric Biggers Since crypto/chacha.c now registers chacha20-$(ARCH), xchacha20-$(ARCH), and xchacha12-$(ARCH) skcipher algorithms that use the architecture's ChaCha and HChaCha library functions, individual architectures no longer need to do the same. Therefore, remove the redundant skcipher algorithms and leave just the library functions. Signed-off-by: Eric Biggers --- arch/mips/crypto/Kconfig | 6 -- arch/mips/crypto/chacha-glue.c | 131 +-------------------------------- 2 files changed, 3 insertions(+), 134 deletions(-) diff --git a/arch/mips/crypto/Kconfig b/arch/mips/crypto/Kconfig index 545fc0e12422d..0189686de3a12 100644 --- a/arch/mips/crypto/Kconfig +++ b/arch/mips/crypto/Kconfig @@ -54,15 +54,9 @@ config CRYPTO_SHA512_OCTEON Architecture: mips OCTEON using crypto instructions, when available config CRYPTO_CHACHA_MIPS tristate depends on CPU_MIPS32_R2 - select CRYPTO_SKCIPHER select CRYPTO_ARCH_HAVE_LIB_CHACHA default CRYPTO_LIB_CHACHA_INTERNAL - help - Length-preserving ciphers: ChaCha20, XChaCha20, and XChaCha12 - stream cipher algorithms - - Architecture: MIPS32r2 endmenu diff --git a/arch/mips/crypto/chacha-glue.c b/arch/mips/crypto/chacha-glue.c index 64ccaeaeaa1e1..334ecb29fb8fa 100644 --- a/arch/mips/crypto/chacha-glue.c +++ b/arch/mips/crypto/chacha-glue.c @@ -1,152 +1,27 @@ // SPDX-License-Identifier: GPL-2.0 /* - * MIPS accelerated ChaCha and XChaCha stream ciphers, - * including ChaCha20 (RFC7539) + * ChaCha and HChaCha functions (MIPS optimized) * * Copyright (C) 2019 Linaro, Ltd. */ -#include -#include -#include -#include +#include #include #include asmlinkage void chacha_crypt_arch(u32 *state, u8 *dst, const u8 *src, unsigned int bytes, int nrounds); EXPORT_SYMBOL(chacha_crypt_arch); asmlinkage void hchacha_block_arch(const u32 *state, u32 *stream, int nrounds); EXPORT_SYMBOL(hchacha_block_arch); -static int chacha_mips_stream_xor(struct skcipher_request *req, - const struct chacha_ctx *ctx, const u8 *iv) -{ - struct skcipher_walk walk; - u32 state[16]; - int err; - - err = skcipher_walk_virt(&walk, req, false); - - chacha_init(state, ctx->key, iv); - - while (walk.nbytes > 0) { - unsigned int nbytes = walk.nbytes; - - if (nbytes < walk.total) - nbytes = round_down(nbytes, walk.stride); - - chacha_crypt(state, walk.dst.virt.addr, walk.src.virt.addr, - nbytes, ctx->nrounds); - err = skcipher_walk_done(&walk, walk.nbytes - nbytes); - } - - return err; -} - -static int chacha_mips(struct skcipher_request *req) -{ - struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm); - - return chacha_mips_stream_xor(req, ctx, req->iv); -} - -static int xchacha_mips(struct skcipher_request *req) -{ - struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); - struct chacha_ctx *ctx = crypto_skcipher_ctx(tfm); - struct chacha_ctx subctx; - u32 state[16]; - u8 real_iv[16]; - - chacha_init(state, ctx->key, req->iv); - - hchacha_block(state, subctx.key, ctx->nrounds); - subctx.nrounds = ctx->nrounds; - - memcpy(&real_iv[0], req->iv + 24, 8); - memcpy(&real_iv[8], req->iv + 16, 8); - return chacha_mips_stream_xor(req, &subctx, real_iv); -} - -static struct skcipher_alg algs[] = { - { - .base.cra_name = "chacha20", - .base.cra_driver_name = "chacha20-mips", - .base.cra_priority = 200, - .base.cra_blocksize = 1, - .base.cra_ctxsize = sizeof(struct chacha_ctx), - .base.cra_module = THIS_MODULE, - - .min_keysize = CHACHA_KEY_SIZE, - .max_keysize = CHACHA_KEY_SIZE, - .ivsize = CHACHA_IV_SIZE, - .chunksize = CHACHA_BLOCK_SIZE, - .setkey = chacha20_setkey, - .encrypt = chacha_mips, - .decrypt = chacha_mips, - }, { - .base.cra_name = "xchacha20", - .base.cra_driver_name = "xchacha20-mips", - .base.cra_priority = 200, - .base.cra_blocksize = 1, - .base.cra_ctxsize = sizeof(struct chacha_ctx), - .base.cra_module = THIS_MODULE, - - .min_keysize = CHACHA_KEY_SIZE, - .max_keysize = CHACHA_KEY_SIZE, - .ivsize = XCHACHA_IV_SIZE, - .chunksize = CHACHA_BLOCK_SIZE, - .setkey = chacha20_setkey, - .encrypt = xchacha_mips, - .decrypt = xchacha_mips, - }, { - .base.cra_name = "xchacha12", - .base.cra_driver_name = "xchacha12-mips", - .base.cra_priority = 200, - .base.cra_blocksize = 1, - .base.cra_ctxsize = sizeof(struct chacha_ctx), - .base.cra_module = THIS_MODULE, - - .min_keysize = CHACHA_KEY_SIZE, - .max_keysize = CHACHA_KEY_SIZE, - .ivsize = XCHACHA_IV_SIZE, - .chunksize = CHACHA_BLOCK_SIZE, - .setkey = chacha12_setkey, - .encrypt = xchacha_mips, - .decrypt = xchacha_mips, - } -}; - bool chacha_is_arch_optimized(void) { return true; } EXPORT_SYMBOL(chacha_is_arch_optimized); -static int __init chacha_simd_mod_init(void) -{ - return IS_REACHABLE(CONFIG_CRYPTO_SKCIPHER) ? - crypto_register_skciphers(algs, ARRAY_SIZE(algs)) : 0; -} - -static void __exit chacha_simd_mod_fini(void) -{ - if (IS_REACHABLE(CONFIG_CRYPTO_SKCIPHER)) - crypto_unregister_skciphers(algs, ARRAY_SIZE(algs)); -} - -arch_initcall(chacha_simd_mod_init); -module_exit(chacha_simd_mod_fini); - -MODULE_DESCRIPTION("ChaCha and XChaCha stream ciphers (MIPS accelerated)"); +MODULE_DESCRIPTION("ChaCha and HChaCha functions (MIPS optimized)"); MODULE_AUTHOR("Ard Biesheuvel "); MODULE_LICENSE("GPL v2"); -MODULE_ALIAS_CRYPTO("chacha20"); -MODULE_ALIAS_CRYPTO("chacha20-mips"); -MODULE_ALIAS_CRYPTO("xchacha20"); -MODULE_ALIAS_CRYPTO("xchacha20-mips"); -MODULE_ALIAS_CRYPTO("xchacha12"); -MODULE_ALIAS_CRYPTO("xchacha12-mips");