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Mon, 28 Aug 2023 19:02:35 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CY4PEPF0000E9D8.mail.protection.outlook.com (10.167.241.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6745.17 via Frontend Transport; Mon, 28 Aug 2023 19:02:35 +0000 Received: from AUS-P9-MLIMONCI.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 28 Aug 2023 14:02:33 -0500 From: Mario Limonciello To: , CC: , , "Mario Limonciello" Subject: [PATCH 1/3] crypto: ccp: Fix DBC sample application error handling Date: Mon, 28 Aug 2023 14:01:58 -0500 Message-ID: <20230828190200.1598-2-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230828190200.1598-1-mario.limonciello@amd.com> References: <20230828190200.1598-1-mario.limonciello@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D8:EE_|CH3PR12MB8259:EE_ X-MS-Office365-Filtering-Correlation-Id: ea3e054f-d5a2-4de2-4d1b-08dba7f95725 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2023 19:02:35.2721 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ea3e054f-d5a2-4de2-4d1b-08dba7f95725 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8259 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org The sample application was taking values from ioctl() and treating those as the error codes to present to a user. This is incorrect when ret is non-zero, the error is stored to `errno`. Use this value instead. Fixes: f40d42f116cf ("crypto: ccp - Add a sample python script for Dynamic Boost Control") Fixes: febe3ed3222f ("crypto: ccp - Add a sample library for ioctl use") Signed-off-by: Mario Limonciello --- tools/crypto/ccp/dbc.c | 16 ++++++++-------- tools/crypto/ccp/dbc.py | 3 +-- 2 files changed, 9 insertions(+), 10 deletions(-) diff --git a/tools/crypto/ccp/dbc.c b/tools/crypto/ccp/dbc.c index 37e813175642..7774e981849f 100644 --- a/tools/crypto/ccp/dbc.c +++ b/tools/crypto/ccp/dbc.c @@ -8,6 +8,7 @@ */ #include +#include #include #include @@ -22,16 +23,14 @@ int get_nonce(int fd, void *nonce_out, void *signature) struct dbc_user_nonce tmp = { .auth_needed = !!signature, }; - int ret; assert(nonce_out); if (signature) memcpy(tmp.signature, signature, sizeof(tmp.signature)); - ret = ioctl(fd, DBCIOCNONCE, &tmp); - if (ret) - return ret; + if (ioctl(fd, DBCIOCNONCE, &tmp)) + return errno; memcpy(nonce_out, tmp.nonce, sizeof(tmp.nonce)); return 0; @@ -47,7 +46,9 @@ int set_uid(int fd, __u8 *uid, __u8 *signature) memcpy(tmp.uid, uid, sizeof(tmp.uid)); memcpy(tmp.signature, signature, sizeof(tmp.signature)); - return ioctl(fd, DBCIOCUID, &tmp); + if (ioctl(fd, DBCIOCUID, &tmp)) + return errno; + return 0; } int process_param(int fd, int msg_index, __u8 *signature, int *data) @@ -63,9 +64,8 @@ int process_param(int fd, int msg_index, __u8 *signature, int *data) memcpy(tmp.signature, signature, sizeof(tmp.signature)); - ret = ioctl(fd, DBCIOCPARAM, &tmp); - if (ret) - return ret; + if (ioctl(fd, DBCIOCPARAM, &tmp)) + return errno; *data = tmp.param; return 0; diff --git a/tools/crypto/ccp/dbc.py b/tools/crypto/ccp/dbc.py index 3f6a825ffc9e..3956efe7537a 100644 --- a/tools/crypto/ccp/dbc.py +++ b/tools/crypto/ccp/dbc.py @@ -27,8 +27,7 @@ lib = ctypes.CDLL("./dbc_library.so", mode=ctypes.RTLD_GLOBAL) def handle_error(code): - val = code * -1 - raise OSError(val, os.strerror(val)) + raise OSError(code, os.strerror(code)) def get_nonce(device, signature): From patchwork Mon Aug 28 19:01:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mario Limonciello X-Patchwork-Id: 13368206 X-Patchwork-Delegate: herbert@gondor.apana.org.au 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58ADDC83F12 for ; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2023 19:02:36.2408 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6c29dd86-51df-489b-bd0f-08dba7f957b6 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6905 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org When parameters are sent the PSP returns back it's own signature for the application to verify the authenticity of the result. Display this signature to the caller instead of the one the caller sent. Fixes: f40d42f116cf ("crypto: ccp - Add a sample python script for Dynamic Boost Control") Fixes: febe3ed3222f ("crypto: ccp - Add a sample library for ioctl use") Signed-off-by: Mario Limonciello --- tools/crypto/ccp/dbc.c | 1 + tools/crypto/ccp/dbc.py | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/crypto/ccp/dbc.c b/tools/crypto/ccp/dbc.c index 7774e981849f..a807df0f0597 100644 --- a/tools/crypto/ccp/dbc.c +++ b/tools/crypto/ccp/dbc.c @@ -68,5 +68,6 @@ int process_param(int fd, int msg_index, __u8 *signature, int *data) return errno; *data = tmp.param; + memcpy(signature, tmp.signature, sizeof(tmp.signature)); return 0; } diff --git a/tools/crypto/ccp/dbc.py b/tools/crypto/ccp/dbc.py index 3956efe7537a..2b91415b1940 100644 --- a/tools/crypto/ccp/dbc.py +++ b/tools/crypto/ccp/dbc.py @@ -57,7 +57,8 @@ def process_param(device, message, signature, data=None): if type(message) != tuple: raise ValueError("Expected message tuple") arg = ctypes.c_int(data if data else 0) - ret = lib.process_param(device.fileno(), message[0], signature, ctypes.pointer(arg)) + sig = ctypes.create_string_buffer(signature, len(signature)) + ret = lib.process_param(device.fileno(), message[0], ctypes.pointer(sig), ctypes.pointer(arg)) if ret: handle_error(ret) - return arg, signature + return arg.value, sig.value From patchwork Mon Aug 28 19:02:00 2023 Content-Type: text/plain; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2023 19:02:36.7408 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6d7cbb39-af47-439f-6ae4-08dba7f95805 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9D8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7319 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Some of the tests for unfused parts referenced a named member parameter, but when the test suite was switched to call a python ctypes library they weren't updated. Adjust them to refer to the first argument of the process_param() call. Fixes: 15f8aa7bb3e5 ("crypto: ccp - Add unit tests for dynamic boost control") Signed-off-by: Mario Limonciello --- tools/crypto/ccp/test_dbc.py | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/tools/crypto/ccp/test_dbc.py b/tools/crypto/ccp/test_dbc.py index a28a1f94c1d2..18df031aa5e1 100755 --- a/tools/crypto/ccp/test_dbc.py +++ b/tools/crypto/ccp/test_dbc.py @@ -192,12 +192,12 @@ class TestUnFusedSystem(DynamicBoostControlTest): # SOC power soc_power_max = process_param(self.d, PARAM_GET_SOC_PWR_MAX, self.signature) soc_power_min = process_param(self.d, PARAM_GET_SOC_PWR_MIN, self.signature) - self.assertGreater(soc_power_max.parameter, soc_power_min.parameter) + self.assertGreater(soc_power_max[0], soc_power_min[0]) # fmax fmax_max = process_param(self.d, PARAM_GET_FMAX_MAX, self.signature) fmax_min = process_param(self.d, PARAM_GET_FMAX_MIN, self.signature) - self.assertGreater(fmax_max.parameter, fmax_min.parameter) + self.assertGreater(fmax_max[0], fmax_min[0]) # cap values keys = { @@ -208,7 +208,7 @@ class TestUnFusedSystem(DynamicBoostControlTest): } for k in keys: result = process_param(self.d, keys[k], self.signature) - self.assertGreater(result.parameter, 0) + self.assertGreater(result[0], 0) def test_get_invalid_param(self) -> None: """fetch an invalid parameter""" @@ -226,17 +226,17 @@ class TestUnFusedSystem(DynamicBoostControlTest): original = process_param(self.d, PARAM_GET_FMAX_CAP, self.signature) # set the fmax - target = original.parameter - 100 + target = original[0] - 100 process_param(self.d, PARAM_SET_FMAX_CAP, self.signature, target) time.sleep(SET_DELAY) new = process_param(self.d, PARAM_GET_FMAX_CAP, self.signature) - self.assertEqual(new.parameter, target) + self.assertEqual(new[0], target) # revert back to current - process_param(self.d, PARAM_SET_FMAX_CAP, self.signature, original.parameter) + process_param(self.d, PARAM_SET_FMAX_CAP, self.signature, original[0]) time.sleep(SET_DELAY) cur = process_param(self.d, PARAM_GET_FMAX_CAP, self.signature) - self.assertEqual(cur.parameter, original.parameter) + self.assertEqual(cur[0], original[0]) def test_set_power_cap(self) -> None: """get/set power cap limit""" @@ -244,17 +244,17 @@ class TestUnFusedSystem(DynamicBoostControlTest): original = process_param(self.d, PARAM_GET_PWR_CAP, self.signature) # set the fmax - target = original.parameter - 10 + target = original[0] - 10 process_param(self.d, PARAM_SET_PWR_CAP, self.signature, target) time.sleep(SET_DELAY) new = process_param(self.d, PARAM_GET_PWR_CAP, self.signature) - self.assertEqual(new.parameter, target) + self.assertEqual(new[0], target) # revert back to current - process_param(self.d, PARAM_SET_PWR_CAP, self.signature, original.parameter) + process_param(self.d, PARAM_SET_PWR_CAP, self.signature, original[0]) time.sleep(SET_DELAY) cur = process_param(self.d, PARAM_GET_PWR_CAP, self.signature) - self.assertEqual(cur.parameter, original.parameter) + self.assertEqual(cur[0], original[0]) def test_set_3d_graphics_mode(self) -> None: """set/get 3d graphics mode"""