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Miller" Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 7/9] crypto: caam/jr - add support for XTS with 16B IV Date: Thu, 6 Aug 2020 14:41:25 +0300 Message-Id: <20200806114127.8650-8-andrei.botila@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200806114127.8650-1-andrei.botila@oss.nxp.com> References: <20200806114127.8650-1-andrei.botila@oss.nxp.com> Content-Type: text/plain X-ClientProxiedBy: AM0PR06CA0101.eurprd06.prod.outlook.com (2603:10a6:208:fa::42) To VE1PR04MB6608.eurprd04.prod.outlook.com (2603:10a6:803:125::12) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv15007.swis.ro-buh01.nxp.com (83.217.231.2) by AM0PR06CA0101.eurprd06.prod.outlook.com (2603:10a6:208:fa::42) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3261.18 via Frontend Transport; Thu, 6 Aug 2020 11:41:55 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [83.217.231.2] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 986d1839-cbeb-4fac-4948-08d839fdb865 X-MS-TrafficTypeDiagnostic: VI1PR0402MB3440: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: O++reUXOap61eD/NCN2LR75x+CB+Hw1k9QJF8bfGh/I9rQMHmkRyQa94PPqt++PzQ78Ib7g4Xmw/Vfp4GiT7ecOHFhMY+D51WEeFEBiI7ryRdrevjg0rvzTokBKCfigivat4NL35FmAIqyJcqWVluiX9QX7nnNS5Zg639mLoPxLlSle9Rmh2MICWKzdlUVlk+P+FrDROVvZi7t0BMzZ/zd7aUcpPZ4EJ14yBKgItx6FB5BomBu1TjECm6DNKywoNmoAJqyTe3XteKq+mPC+I99Kr7gk5U1MrYS+o0al59oJ0fQlcHbP29v/TqfiUY9xOUtHCtVJKgYRj19T2qffX9A== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:VE1PR04MB6608.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(366004)(396003)(376002)(39860400002)(346002)(136003)(110136005)(316002)(6666004)(6512007)(478600001)(956004)(2616005)(6486002)(4326008)(1076003)(44832011)(52116002)(6506007)(86362001)(186003)(26005)(16526019)(66556008)(66476007)(2906002)(66946007)(83380400001)(8676002)(5660300002)(8936002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 986d1839-cbeb-4fac-4948-08d839fdb865 X-MS-Exchange-CrossTenant-AuthSource: VE1PR04MB6608.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Aug 2020 11:41:55.7489 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: DYfWlP4nTM1cSE/+0ZVu7Bfu7lCZbbHpe8OLxg0+45+YOjtbBtFMeSxToUifnuT+sW+PU8vretLiGwuFwa+22g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0402MB3440 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Andrei Botila Newer CAAM versions (Era 9+) support 16B IVs. Since for these devices the HW limitation is no longer present newer version should process the requests containing 16B IVs directly in hardware without using a fallback. Signed-off-by: Andrei Botila --- drivers/crypto/caam/caamalg.c | 13 +++++++++---- drivers/crypto/caam/caamalg_desc.c | 27 ++++++++++++++++----------- 2 files changed, 25 insertions(+), 15 deletions(-) diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index a5447ae430b0..7e03854252b0 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -833,6 +833,7 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, { struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); struct device *jrdev = ctx->jrdev; + struct caam_drv_private *ctrlpriv = dev_get_drvdata(jrdev->parent); u32 *desc; int err; @@ -842,9 +843,12 @@ static int xts_skcipher_setkey(struct crypto_skcipher *skcipher, const u8 *key, return err; } - err = crypto_skcipher_setkey(ctx->fallback, key, keylen); - if (err) - return err; + if (ctrlpriv->era <= 8 || (keylen != 2 * AES_KEYSIZE_128 && + keylen != 2 * AES_KEYSIZE_256)) { + err = crypto_skcipher_setkey(ctx->fallback, key, keylen); + if (err) + return err; + } ctx->cdata.keylen = keylen; ctx->cdata.key_virt = key; @@ -1786,13 +1790,14 @@ static inline int skcipher_crypt(struct skcipher_request *req, bool encrypt) struct caam_ctx *ctx = crypto_skcipher_ctx(skcipher); struct device *jrdev = ctx->jrdev; struct caam_drv_private_jr *jrpriv = dev_get_drvdata(jrdev); + struct caam_drv_private *ctrlpriv = dev_get_drvdata(jrdev->parent); u32 *desc; int ret = 0; if (!req->cryptlen) return 0; - if (ctx->fallback && (xts_skcipher_ivsize(req) || + if (ctx->fallback && ((ctrlpriv->era <= 8 && xts_skcipher_ivsize(req)) || (ctx->cdata.keylen != 2 * AES_KEYSIZE_128 && ctx->cdata.keylen != 2 * AES_KEYSIZE_256))) { struct caam_skcipher_req_ctx *rctx = skcipher_request_ctx(req); diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c index d6c58184bb57..433d6d5cd582 100644 --- a/drivers/crypto/caam/caamalg_desc.c +++ b/drivers/crypto/caam/caamalg_desc.c @@ -1550,13 +1550,14 @@ void cnstr_shdsc_xts_skcipher_encap(u32 * const desc, struct alginfo *cdata) set_jump_tgt_here(desc, key_jump_cmd); /* - * create sequence for loading the sector index - * Upper 8B of IV - will be used as sector index - * Lower 8B of IV - will be discarded + * create sequence for loading the sector index / 16B tweak value + * Lower 8B of IV - sector index / tweak lower half + * Upper 8B of IV - upper half of 16B tweak */ append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | (0x20 << LDST_OFFSET_SHIFT)); - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x30 << LDST_OFFSET_SHIFT)); /* Load operation */ append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | @@ -1565,9 +1566,11 @@ void cnstr_shdsc_xts_skcipher_encap(u32 * const desc, struct alginfo *cdata) /* Perform operation */ skcipher_append_src_dst(desc); - /* Store upper 8B of IV */ + /* Store lower 8B and upper 8B of IV */ append_seq_store(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | (0x20 << LDST_OFFSET_SHIFT)); + append_seq_store(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x30 << LDST_OFFSET_SHIFT)); print_hex_dump_debug("xts skcipher enc shdesc@" __stringify(__LINE__) ": ", DUMP_PREFIX_ADDRESS, 16, 4, @@ -1609,23 +1612,25 @@ void cnstr_shdsc_xts_skcipher_decap(u32 * const desc, struct alginfo *cdata) set_jump_tgt_here(desc, key_jump_cmd); /* - * create sequence for loading the sector index - * Upper 8B of IV - will be used as sector index - * Lower 8B of IV - will be discarded + * create sequence for loading the sector index / 16B tweak value + * Lower 8B of IV - sector index / tweak lower half + * Upper 8B of IV - upper half of 16B tweak */ append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | (0x20 << LDST_OFFSET_SHIFT)); - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); - + append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x30 << LDST_OFFSET_SHIFT)); /* Load operation */ append_dec_op1(desc, cdata->algtype); /* Perform operation */ skcipher_append_src_dst(desc); - /* Store upper 8B of IV */ + /* Store lower 8B and upper 8B of IV */ append_seq_store(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | (0x20 << LDST_OFFSET_SHIFT)); + append_seq_store(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x30 << LDST_OFFSET_SHIFT)); print_hex_dump_debug("xts skcipher dec shdesc@" __stringify(__LINE__) ": ", DUMP_PREFIX_ADDRESS, 16, 4, desc, -- 2.17.1