From patchwork Mon Feb 12 13:50:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Romanov X-Patchwork-Id: 13553241 X-Patchwork-Delegate: herbert@gondor.apana.org.au Received: from mx1.sberdevices.ru (mx1.sberdevices.ru [37.18.73.165]) (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 8526F3D96D; Mon, 12 Feb 2024 13:51:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=37.18.73.165 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707745906; cv=none; b=O6wQK7/V3nC/1P1IylsqiXZkF/BLgQiMs3EbDENnZ9wJknVkl6VQWDprBfMukHMKxg6r+/k++u84Nv07x9OuHHiT6PBiZzfMh/4CHPBPcU4U3tXchdU2VaXHgvJ6uyRGwSQJGUuDmAzl1ebpL+fxHetRg5IPkyPJwzz7ZHDFrXI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707745906; c=relaxed/simple; bh=OTFpbOAIvg7gwN6JDm2IAiRijfW3diyUpqOMsDH6k9c=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DLlBOC/lMXsXatH2ONxqFBqNyEO1071ZlZvGCvrNNz+jIQWSO7iHhntoJmud8l4UPGsRMtDkMLMyKiAD+aPRFQ4Dr9nXWoT+CxpKlVNgklN/l4pRwuwSFK8o0Ra67do9FWrS9LyAXHcyQKlaM0iUDutaGDu9EZSNU8mPJ6T2maA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=salutedevices.com; spf=pass smtp.mailfrom=salutedevices.com; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b=puw8DAyf; arc=none smtp.client-ip=37.18.73.165 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=salutedevices.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=salutedevices.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b="puw8DAyf" Received: from p-infra-ksmg-sc-msk01 (localhost [127.0.0.1]) by mx1.sberdevices.ru (Postfix) with ESMTP id D6942100018; Mon, 12 Feb 2024 16:51:42 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.sberdevices.ru D6942100018 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=mail; t=1707745902; bh=TafhfsIw52y/sr0v1bVjQFxSG2rnKtoQK6qR1sUHNA4=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:From; b=puw8DAyfiGtVSgMObAH09GMYbABgebtmi6EIT31PEbPPYHfCKt8Fb6LpufrMKu0Bu yKhNxZocdNrbHGyvAJkIKcO5GOfR9AyrysIQVWiij8tExWU+YOPo9JB+gRQcZrkpm6 QLTJzlMLzXMtFy8nvD+VUqG71ULECKpz5ek7PB1D5PQONKQzwtslS7dYdO3gAbFjb5 owOxlvHUL+1pQrMSjggyGV/ItAJfpvTp5hSrPZLvBpxtyVAeQW2+85gVXjh4euND8w oaRQFhyNrX2sBZ/0rZxbd/E6poeyFeYg52NX2zi2sIjEre71tsppr25k198J2b+Ak4 Yc/yE0yfKS1Sw== Received: from smtp.sberdevices.ru (p-i-exch-sc-m01.sberdevices.ru [172.16.192.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.sberdevices.ru (Postfix) with ESMTPS; Mon, 12 Feb 2024 16:51:42 +0300 (MSK) Received: from user-A520M-DS3H.sberdevices.ru (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Mon, 12 Feb 2024 16:51:41 +0300 From: Alexey Romanov To: , , , , , , , , , , CC: , , , , , , Alexey Romanov Subject: [PATCH v4 10/20] drivers: crypto: meson: avoid kzalloc in engine thread Date: Mon, 12 Feb 2024 16:50:58 +0300 Message-ID: <20240212135108.549755-11-avromanov@salutedevices.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240212135108.549755-1-avromanov@salutedevices.com> References: <20240212135108.549755-1-avromanov@salutedevices.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 183368 [Feb 12 2024] X-KSMG-AntiSpam-Version: 6.1.0.3 X-KSMG-AntiSpam-Envelope-From: avromanov@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 7 0.3.7 6d6bf5bd8eea7373134f756a2fd73e9456bb7d1a, {Tracking_from_domain_doesnt_match_to}, 100.64.160.123:7.1.2;smtp.sberdevices.ru:7.1.1,5.0.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;salutedevices.com:7.1.1;127.0.0.199:7.1.2, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2024/02/12 07:49:00 #23556813 X-KSMG-AntiVirus-Status: Clean, skipped It makes no sense to allocate memory via kzalloc, we can use static buffer, speedup data processing and don't think about kfree() calls. Signed-off-by: Alexey Romanov Reviewed-by: Neil Armstrong --- drivers/crypto/amlogic/amlogic-gxl-cipher.c | 26 ++++++++------------- drivers/crypto/amlogic/amlogic-gxl.h | 6 ++--- 2 files changed, 13 insertions(+), 19 deletions(-) diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c index c1b3569a614a..3f42b2cc568d 100644 --- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c +++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c @@ -91,7 +91,6 @@ struct cipher_ctx { struct skcipher_request *areq; struct scatterlist *src_sg; struct scatterlist *dst_sg; - void *bkeyiv; unsigned int src_offset; unsigned int dst_offset; @@ -156,8 +155,7 @@ static void meson_setup_keyiv_descs(struct cipher_ctx *ctx) return; if (blockmode == DESC_OPMODE_CBC) { - memcpy(ctx->bkeyiv + AES_MAX_KEY_SIZE, ctx->areq->iv, ivsize); - ctx->keyiv.len = AES_MAX_KEY_SIZE + ivsize; + memcpy(op->keyiv + AES_MAX_KEY_SIZE, ctx->areq->iv, ivsize); dma_sync_single_for_device(mc->dev, ctx->keyiv.addr, ctx->keyiv.len, DMA_TO_DEVICE); } @@ -304,6 +302,7 @@ static int meson_cipher(struct skcipher_request *areq) .dst_sg = areq->dst, .cryptlen = areq->cryptlen, }; + unsigned int ivsize = crypto_skcipher_ivsize(tfm); int err; dev_dbg(mc->dev, "%s %s %u %x IV(%u) key=%u ctx.flow=%d\n", __func__, @@ -319,16 +318,16 @@ static int meson_cipher(struct skcipher_request *areq) mc->chanlist[rctx->flow].stat_req++; #endif - ctx.bkeyiv = kzalloc(48, GFP_KERNEL | GFP_DMA); - if (!ctx.bkeyiv) - return -ENOMEM; - - memcpy(ctx.bkeyiv, op->key, op->keylen); ctx.keyiv.len = op->keylen; if (ctx.keyiv.len == AES_KEYSIZE_192) ctx.keyiv.len = AES_MAX_KEY_SIZE; - ctx.keyiv.addr = dma_map_single(mc->dev, ctx.bkeyiv, ctx.keyiv.len, + if (algt->blockmode == DESC_OPMODE_CBC) { + memcpy(op->keyiv + AES_MAX_KEY_SIZE, areq->iv, ivsize); + ctx.keyiv.len = AES_MAX_KEY_SIZE + ivsize; + } + + ctx.keyiv.addr = dma_map_single(mc->dev, op->keyiv, ctx.keyiv.len, DMA_TO_DEVICE); err = dma_mapping_error(mc->dev, ctx.keyiv.addr); if (err) { @@ -366,8 +365,6 @@ static int meson_cipher(struct skcipher_request *areq) meson_unmap_scatterlist(areq, mc); theend: - kfree_sensitive(ctx.bkeyiv); - return err; } @@ -450,7 +447,6 @@ static void meson_cipher_exit(struct crypto_tfm *tfm) { struct meson_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm); - kfree_sensitive(op->key); crypto_free_skcipher(op->fallback_tfm); } @@ -474,11 +470,9 @@ static int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, dev_dbg(mc->dev, "ERROR: Invalid keylen %u\n", keylen); return -EINVAL; } - kfree_sensitive(op->key); + + memcpy(op->keyiv, key, keylen); op->keylen = keylen; - op->key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA); - if (!op->key) - return -ENOMEM; return crypto_skcipher_setkey(op->fallback_tfm, key, keylen); } diff --git a/drivers/crypto/amlogic/amlogic-gxl.h b/drivers/crypto/amlogic/amlogic-gxl.h index eb2f8cd72b65..e1453dd2e9f4 100644 --- a/drivers/crypto/amlogic/amlogic-gxl.h +++ b/drivers/crypto/amlogic/amlogic-gxl.h @@ -129,15 +129,15 @@ struct meson_cipher_req_ctx { /* * struct meson_cipher_tfm_ctx - context for a skcipher TFM - * @key: pointer to key data + * @keyiv: key data * @keylen: len of the key * @keymode: The keymode(type and size of key) associated with this TFM * @mc: pointer to the private data of driver handling this TFM * @fallback_tfm: pointer to the fallback TFM */ struct meson_cipher_tfm_ctx { - u32 *key; - u32 keylen; + u8 keyiv[AES_MAX_KEY_SIZE + AES_BLOCK_SIZE] ____cacheline_aligned; + u32 keylen ____cacheline_aligned; u32 keymode; struct meson_dev *mc; struct crypto_skcipher *fallback_tfm;