From patchwork Wed Mar 2 21:11:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Corentin LABBE X-Patchwork-Id: 12766777 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 1E589C433F5 for ; Wed, 2 Mar 2022 21:19:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4CXY67DXG6/zLOZSO2E/4l3khFeV4i8L98kyPE6H3XY=; b=2ZY1aE3VihtqHy rzC8NakLH70OKJ9qc+3wj20K5RqDPLmCH5/utxXuLCU2d4l01rFcEdGKNzd9egH2110pp4eWb69Q1 Dk81X/R13UvyUaxtsI8MKJuJTSX9q+ShaOArF3LTxcrdEvn2hNZAnPH03sUqIeEfB3nNz5wm64/Cj byMsq2KLZigOsems/7js472KdA3lvBSmfO3qgncGnMGziuc4wBumRUFIqLFbTLIPXUI03/E2yHGvs odwDmZ4ssUl4Z0QHXBEcZQ6F7G/jxUBvNNJ4vURDRk00br5eNihNS9DMh0hnPMVyfuWn9XoMEJS1I Uq7QfIvhZPx2DpcxqD8g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nPWNb-004Frk-HU; Wed, 02 Mar 2022 21:19:27 +0000 Received: from mail-wr1-x432.google.com ([2a00:1450:4864:20::432]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nPWFs-004Bhl-Sd for linux-rockchip@lists.infradead.org; Wed, 02 Mar 2022 21:11:33 +0000 Received: by mail-wr1-x432.google.com with SMTP id ay10so4736702wrb.6 for ; Wed, 02 Mar 2022 13:11:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=olJ+MIWmIE0QSn9H53I+B3XIETHxsoyvoZm2QqSjqD0=; b=7RyRu2OD6pW15W6rmLLFgczDqvqBS2OpjvYMKCPaSmXTdOs3NWOs5CxPgbWy4dEOV7 IwgRaoWw29j0/zjGbfWNjuOsvjU/RIrmLvqyJY01yeGWiNj1cSKjGkreKthidfmarEIN wb4i8+Kxsn7abxiO1e6TpJb3yFMfXT14lbLgEImWLXZaWjSzLGrqmGlbyuCSkkEsIMzZ V81/VlAP9F2G0elAvHSfWYl61QjJw3/lmZcsIT1Aduii4M6t+jlx1NjBLdmYWIRnnVcJ 2jYelohoCkVc7tYfE/mSrieRvaxi/NIWQk8whFgb+Gqj10zQgm+/zuEF2DAwVQB+htAM FDCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=olJ+MIWmIE0QSn9H53I+B3XIETHxsoyvoZm2QqSjqD0=; b=Zgd7cQYd4dJgoRH/pScf5tJ5WXocsx1JTuPra2PVzXYQsqs06OR/SCpdmNSdEfu8qq oRBgh74UE7Xsun7jjfD2bsJbzgfPXQOBVL9VVV2vK4s/Yy3Emxwi6E/9/YJsRbNwE7Eb NhobtIVaLMj++n1RWgMtPVNJ8lXYCxD4St+NtoWCMTfM7IQcIfxaJto6+/iLczmolYqM 9z3j8+OX9ecGF5W5FcG2zEABnXWb8Ir7Gme4Rl6Vc9TsE2H+D2YC2PYUsKEQ0s3Pg/Bu LMCtp5NcygqGYc9U5tf4xW4vkHIOTwt91mCxZRYGHXAW3fCdbQ0QHxRkOtHO3J+CIFq1 2aeA== X-Gm-Message-State: AOAM533wGKMW/jHdOuC3HMuthPE4tTWgcH4s5f8KIgn+gmRcSd6vdx9+ i9dnGr+PuNKvVfU3+ARUT5wBkw== X-Google-Smtp-Source: ABdhPJwOY7C2+Ff6F4bmzHkNHkhypjWPD8wgOKrfySdCybTPGgiIj417nxp90FWQXzG+DV/HSMWvxA== X-Received: by 2002:adf:f588:0:b0:1ef:6508:3691 with SMTP id f8-20020adff588000000b001ef65083691mr20671575wro.446.1646255487566; Wed, 02 Mar 2022 13:11:27 -0800 (PST) Received: from localhost.localdomain (laubervilliers-658-1-213-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.googlemail.com with ESMTPSA id z5-20020a05600c0a0500b0037fa93193a8sm145776wmp.44.2022.03.02.13.11.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Mar 2022 13:11:27 -0800 (PST) From: Corentin Labbe To: heiko@sntech.de, herbert@gondor.apana.org.au, robh+dt@kernel.org Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, john@metanate.com, Corentin Labbe Subject: [PATCH v2 06/18] crypto: rockchip: add fallback for cipher Date: Wed, 2 Mar 2022 21:11:01 +0000 Message-Id: <20220302211113.4003816-7-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220302211113.4003816-1-clabbe@baylibre.com> References: <20220302211113.4003816-1-clabbe@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220302_131128_993176_B2798AE2 X-CRM114-Status: GOOD ( 17.49 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The hardware does not handle 0 size length request, let's add a fallback. Furthermore fallback will be used for all unaligned case the hardware cannot handle. Fixes: ce0183cb6464b ("crypto: rockchip - switch to skcipher API") Signed-off-by: Corentin Labbe --- drivers/crypto/rockchip/rk3288_crypto.h | 2 + .../crypto/rockchip/rk3288_crypto_skcipher.c | 97 ++++++++++++++++--- 2 files changed, 86 insertions(+), 13 deletions(-) diff --git a/drivers/crypto/rockchip/rk3288_crypto.h b/drivers/crypto/rockchip/rk3288_crypto.h index c919d9a43a08..8b1e15d8ddc6 100644 --- a/drivers/crypto/rockchip/rk3288_crypto.h +++ b/drivers/crypto/rockchip/rk3288_crypto.h @@ -246,10 +246,12 @@ struct rk_cipher_ctx { struct rk_crypto_info *dev; unsigned int keylen; u8 iv[AES_BLOCK_SIZE]; + struct crypto_skcipher *fallback_tfm; }; struct rk_cipher_rctx { u32 mode; + struct skcipher_request fallback_req; // keep at the end }; enum alg_type { diff --git a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c index bbd0bf52bf07..bf9d398cc54c 100644 --- a/drivers/crypto/rockchip/rk3288_crypto_skcipher.c +++ b/drivers/crypto/rockchip/rk3288_crypto_skcipher.c @@ -13,6 +13,63 @@ #define RK_CRYPTO_DEC BIT(0) +static int rk_cipher_need_fallback(struct skcipher_request *req) +{ + struct scatterlist *sgs, *sgd; + + if (!req->cryptlen) + return true; + + sgs = req->src; + while (sgs) { + if (!IS_ALIGNED(sgs->offset, sizeof(u32))) { + return true; + } + if (sgs->length % 16) { + return true; + } + sgs = sg_next(sgs); + } + sgd = req->dst; + while (sgd) { + if (!IS_ALIGNED(sgd->offset, sizeof(u32))) { + return true; + } + if (sgd->length % 16) { + return true; + } + sgd = sg_next(sgd); + } + sgs = req->src; + sgd = req->dst; + while (sgs && sgd) { + if (sgs->length != sgd->length) + return true; + sgs = sg_next(sgs); + sgd = sg_next(sgd); + } + return false; +} + +static int rk_cipher_fallback(struct skcipher_request *areq) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); + struct rk_cipher_ctx *op = crypto_skcipher_ctx(tfm); + struct rk_cipher_rctx *rctx = skcipher_request_ctx(areq); + int err; + + skcipher_request_set_tfm(&rctx->fallback_req, op->fallback_tfm); + skcipher_request_set_callback(&rctx->fallback_req, areq->base.flags, + areq->base.complete, areq->base.data); + skcipher_request_set_crypt(&rctx->fallback_req, areq->src, areq->dst, + areq->cryptlen, areq->iv); + if (rctx->mode & RK_CRYPTO_DEC) + err = crypto_skcipher_decrypt(&rctx->fallback_req); + else + err = crypto_skcipher_encrypt(&rctx->fallback_req); + return err; +} + static void rk_crypto_complete(struct crypto_async_request *base, int err) { if (base->complete) @@ -22,10 +79,10 @@ static void rk_crypto_complete(struct crypto_async_request *base, int err) static int rk_handle_req(struct rk_crypto_info *dev, struct skcipher_request *req) { - if (!IS_ALIGNED(req->cryptlen, dev->align_size)) - return -EINVAL; - else - return dev->enqueue(dev, &req->base); + if (rk_cipher_need_fallback(req)) + return rk_cipher_fallback(req); + + return dev->enqueue(dev, &req->base); } static int rk_aes_setkey(struct crypto_skcipher *cipher, @@ -39,7 +96,8 @@ static int rk_aes_setkey(struct crypto_skcipher *cipher, return -EINVAL; ctx->keylen = keylen; memcpy_toio(ctx->dev->reg + RK_CRYPTO_AES_KEY_0, key, keylen); - return 0; + + return crypto_skcipher_setkey(ctx->fallback_tfm, key, keylen); } static int rk_des_setkey(struct crypto_skcipher *cipher, @@ -54,7 +112,8 @@ static int rk_des_setkey(struct crypto_skcipher *cipher, ctx->keylen = keylen; memcpy_toio(ctx->dev->reg + RK_CRYPTO_TDES_KEY1_0, key, keylen); - return 0; + + return crypto_skcipher_setkey(ctx->fallback_tfm, key, keylen); } static int rk_tdes_setkey(struct crypto_skcipher *cipher, @@ -69,7 +128,7 @@ static int rk_tdes_setkey(struct crypto_skcipher *cipher, ctx->keylen = keylen; memcpy_toio(ctx->dev->reg + RK_CRYPTO_TDES_KEY1_0, key, keylen); - return 0; + return crypto_skcipher_setkey(ctx->fallback_tfm, key, keylen); } static int rk_aes_ecb_encrypt(struct skcipher_request *req) @@ -394,6 +453,7 @@ static int rk_ablk_init_tfm(struct crypto_skcipher *tfm) { struct rk_cipher_ctx *ctx = crypto_skcipher_ctx(tfm); struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + const char *name = crypto_tfm_alg_name(&tfm->base); struct rk_crypto_tmp *algt; algt = container_of(alg, struct rk_crypto_tmp, alg.skcipher); @@ -407,6 +467,16 @@ static int rk_ablk_init_tfm(struct crypto_skcipher *tfm) if (!ctx->dev->addr_vir) return -ENOMEM; + ctx->fallback_tfm = crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK); + if (IS_ERR(ctx->fallback_tfm)) { + dev_err(ctx->dev->dev, "ERROR: Cannot allocate fallback for %s %ld\n", + name, PTR_ERR(ctx->fallback_tfm)); + return PTR_ERR(ctx->fallback_tfm); + } + + tfm->reqsize = sizeof(struct rk_cipher_rctx) + + crypto_skcipher_reqsize(ctx->fallback_tfm); + return 0; } @@ -415,6 +485,7 @@ static void rk_ablk_exit_tfm(struct crypto_skcipher *tfm) struct rk_cipher_ctx *ctx = crypto_skcipher_ctx(tfm); free_page((unsigned long)ctx->dev->addr_vir); + crypto_free_skcipher(ctx->fallback_tfm); } struct rk_crypto_tmp rk_ecb_aes_alg = { @@ -423,7 +494,7 @@ struct rk_crypto_tmp rk_ecb_aes_alg = { .base.cra_name = "ecb(aes)", .base.cra_driver_name = "ecb-aes-rk", .base.cra_priority = 300, - .base.cra_flags = CRYPTO_ALG_ASYNC, + .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = AES_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct rk_cipher_ctx), .base.cra_alignmask = 0x0f, @@ -445,7 +516,7 @@ struct rk_crypto_tmp rk_cbc_aes_alg = { .base.cra_name = "cbc(aes)", .base.cra_driver_name = "cbc-aes-rk", .base.cra_priority = 300, - .base.cra_flags = CRYPTO_ALG_ASYNC, + .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = AES_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct rk_cipher_ctx), .base.cra_alignmask = 0x0f, @@ -468,7 +539,7 @@ struct rk_crypto_tmp rk_ecb_des_alg = { .base.cra_name = "ecb(des)", .base.cra_driver_name = "ecb-des-rk", .base.cra_priority = 300, - .base.cra_flags = CRYPTO_ALG_ASYNC, + .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = DES_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct rk_cipher_ctx), .base.cra_alignmask = 0x07, @@ -490,7 +561,7 @@ struct rk_crypto_tmp rk_cbc_des_alg = { .base.cra_name = "cbc(des)", .base.cra_driver_name = "cbc-des-rk", .base.cra_priority = 300, - .base.cra_flags = CRYPTO_ALG_ASYNC, + .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = DES_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct rk_cipher_ctx), .base.cra_alignmask = 0x07, @@ -513,7 +584,7 @@ struct rk_crypto_tmp rk_ecb_des3_ede_alg = { .base.cra_name = "ecb(des3_ede)", .base.cra_driver_name = "ecb-des3-ede-rk", .base.cra_priority = 300, - .base.cra_flags = CRYPTO_ALG_ASYNC, + .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = DES_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct rk_cipher_ctx), .base.cra_alignmask = 0x07, @@ -535,7 +606,7 @@ struct rk_crypto_tmp rk_cbc_des3_ede_alg = { .base.cra_name = "cbc(des3_ede)", .base.cra_driver_name = "cbc-des3-ede-rk", .base.cra_priority = 300, - .base.cra_flags = CRYPTO_ALG_ASYNC, + .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = DES_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct rk_cipher_ctx), .base.cra_alignmask = 0x07,