libnsm/test/common-tests.cpp - nsmd - Git at Google

 /*
  * SPDX-FileCopyrightText: Copyright (c) 2023-2024 NVIDIA CORPORATION &
  * AFFILIATES. All rights reserved. SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #include "common-tests.hpp"
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>

 using ::testing::ElementsAre;

 void testEncodeRequest(
     std::function<int(uint8_t, const uint8_t *, nsm_msg *)> function,
     uint8_t nvidiaMsgType, uint8_t command, uint8_t payloadSize,
     const uint8_t *expectedPayload, uint8_t *payload)
 {
 	uint8_t instanceId = 0;
 	Request requestMsg(sizeof(nsm_msg_hdr) + sizeof(nsm_common_req));
 	requestMsg.insert(requestMsg.end(), expectedPayload,
 			  expectedPayload + payloadSize);

 	auto request = reinterpret_cast<nsm_msg *>(requestMsg.data());
 	nsm_common_req *data =
 	    reinterpret_cast<nsm_common_req *>(request->payload);

 	// Bad tests
 	auto rc = function(instanceId, nullptr, request);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(instanceId, expectedPayload, nullptr);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(NSM_INSTANCE_MAX + 1, expectedPayload, request);
 	EXPECT_EQ(NSM_SW_ERROR_DATA, rc);

 	// Good test
 	rc = function(instanceId, expectedPayload, request);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	EXPECT_EQ(1, request->hdr.request);
 	EXPECT_EQ(0, request->hdr.datagram);
 	EXPECT_EQ(instanceId, request->hdr.instance_id);
 	EXPECT_EQ(nvidiaMsgType, request->hdr.nvidia_msg_type);
 	EXPECT_EQ(command, data->command);
 	EXPECT_EQ(payloadSize, data->data_size);
 	if (payload != nullptr) {
 		memcpy(payload, request->payload + sizeof(nsm_common_req),
 		       payloadSize);
 	}
 }

 void testEncodeCommonRequest(std::function<int(uint8_t, nsm_msg *)> function,
 			     uint8_t nvidiaMsgType, uint8_t command)
 {
 	uint8_t payload = 0;
 	testEncodeRequest(
 	    [function](uint8_t instanceId, const uint8_t *data, nsm_msg *msg) {
 		    if (data == nullptr) {
 			    // special case for function with one parameter less
 			    return (int)NSM_SW_ERROR_NULL;
 		    }
 		    return function(instanceId, msg);
 	    },
 	    nvidiaMsgType, command, 0, &payload, nullptr);
 }

 void testDecodeRequest(
     std::function<int(nsm_msg *, uint16_t, uint8_t *)> function,
     uint8_t nvidiaMsgType, uint8_t command, uint8_t payloadSize,
     const uint8_t *expectedPayload, uint8_t *payload)
 {
 	const uint8_t instanceId = 0;
 	Request requestMsg{
 	    0x10,
 	    0xDE,			// PCI VID: NVIDIA 0x10DE
 	    0x80 | (instanceId & 0x1f), // RQ=1, D=0, RSVD=0, INSTANCE_ID=0
 	    0x89,			// OCP_TYPE=8, OCP_VER=9
 	    nvidiaMsgType,		// NVIDIA_MSG_TYPE
 	    command,			// command
 	    payloadSize			// data size
 	};
 	requestMsg.insert(requestMsg.end(), expectedPayload,
 			  expectedPayload + payloadSize);
 	auto request = reinterpret_cast<nsm_msg *>(requestMsg.data());
 	auto data = reinterpret_cast<nsm_common_req *>(request->payload);
 	auto len = requestMsg.size();

 	// Good test
 	auto rc = function(request, len, payload);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	nsm_header_info header;
 	rc = unpack_nsm_header(&request->hdr, &header);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	EXPECT_EQ(nvidiaMsgType, header.nvidia_msg_type);
 	EXPECT_EQ(command, data->command);
 	EXPECT_EQ(payloadSize, data->data_size);
 	EXPECT_EQ(instanceId, header.instance_id);

 	// Bad tests
 	rc = function(nullptr, len, payload);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(request, len, nullptr);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(request, len - 1, payload);
 	EXPECT_EQ(NSM_SW_ERROR_LENGTH, rc);
 	requestMsg[0] = 0;
 	rc = function(request, len, payload);
 	EXPECT_EQ(NSM_SW_ERROR_DATA, rc);
 }

 void testDecodeCommonRequest(std::function<int(nsm_msg *, uint16_t)> function,
 			     uint8_t nvidiaMsgType, uint8_t command)
 {
 	uint8_t payload = 0;
 	testDecodeRequest(
 	    [function](nsm_msg *msg, uint16_t len, uint8_t *data) {
 		    if (data == nullptr) {
 			    // special case for function with one parameter less
 			    return (int)NSM_SW_ERROR_NULL;
 		    }
 		    return function(msg, len);
 	    },
 	    nvidiaMsgType, command, 0, &payload, &payload);
 }

 void testEncodeResponse(
     std::function<int(uint8_t, uint8_t, uint16_t, const uint8_t *, nsm_msg *)>
 	function,
     uint8_t nvidiaMsgType, uint8_t command, size_t payloadSize,
     const uint8_t *expectedPayload, uint8_t *payload)
 {
 	// Test common response
 	const uint8_t instanceId = 0;
 	Response responseMsg(sizeof(nsm_msg_hdr) + sizeof(nsm_common_resp));
 	responseMsg.insert(responseMsg.end(), expectedPayload,
 			   expectedPayload + payloadSize);
 	auto response = reinterpret_cast<nsm_msg *>(responseMsg.data());
 	auto common = reinterpret_cast<nsm_common_resp *>(response->payload);

 	// Good test
 	uint8_t cc = NSM_SUCCESS;
 	uint16_t reasonCode = ERR_NULL;
 	auto rc =
 	    function(instanceId, cc, reasonCode, expectedPayload, response);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	EXPECT_EQ(0, response->hdr.request);
 	EXPECT_EQ(0, response->hdr.datagram);
 	EXPECT_EQ(instanceId, response->hdr.instance_id);
 	EXPECT_EQ(nvidiaMsgType, response->hdr.nvidia_msg_type);
 	EXPECT_EQ(command, common->command);
 	EXPECT_EQ(cc, common->completion_code);
 	EXPECT_EQ(payloadSize, le16toh(common->data_size));
 	if (payload != nullptr) {
 		memcpy(payload, response->payload + sizeof(nsm_common_resp),
 		       payloadSize);
 	}

 	// Bad tests
 	Response badResponseMsg(sizeof(nsm_msg_hdr) +
 				sizeof(nsm_common_non_success_resp));
 	auto badResponse = reinterpret_cast<nsm_msg *>(badResponseMsg.data());
 	auto badData = reinterpret_cast<nsm_common_non_success_resp *>(
 	    badResponse->payload);
 	rc = function(instanceId, cc, reasonCode, nullptr, response);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(instanceId, cc, reasonCode, expectedPayload, nullptr);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(NSM_INSTANCE_MAX + 1, cc, reasonCode, expectedPayload,
 		      response);
 	EXPECT_EQ(NSM_SW_ERROR_DATA, rc);
 	cc = NSM_ERROR;
 	reasonCode = ERR_TIMEOUT;
 	rc = function(instanceId, cc, reasonCode, expectedPayload, badResponse);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	EXPECT_EQ(command, badData->command);
 	EXPECT_EQ(cc, badData->completion_code);
 	EXPECT_EQ(reasonCode, badData->reason_code);
 }

 void testEncodeCommonResponse(
     std::function<int(uint8_t, uint8_t, uint16_t, nsm_msg *)> function,
     uint8_t nvidiaMsgType, uint8_t command)
 {
 	const uint8_t payload = 0;
 	testEncodeResponse(
 	    [function](uint8_t instanceId, uint8_t cc, uint16_t reasonCode,
 		       const uint8_t *data, nsm_msg *msg) {
 		    if (data == nullptr) {
 			    // special case for function with one parameter less
 			    return (int)NSM_SW_ERROR_NULL;
 		    }
 		    return function(instanceId, cc, reasonCode, msg);
 	    },
 	    nvidiaMsgType, command, 0, &payload, nullptr);
 }

 void testDecodeResponse(std::function<int(const nsm_msg *, size_t, uint8_t *,
 					  uint16_t *, uint8_t *)>
 			    function,
 			uint8_t nvidiaMsgType, uint8_t command,
 			size_t payloadSize, const uint8_t *expectedPayload,
 			uint8_t *payload)
 {
 	const uint8_t instanceId = 0;
 	Response responseMsg{
 	    0x10,
 	    0xDE,		      // PCI VID: NVIDIA 0x10DE
 	    (instanceId & 0x1f),      // RQ=0, D=0, RSVD=0, INSTANCE_ID=0
 	    0x89,		      // OCP_TYPE=8, OCP_VER=9
 	    nvidiaMsgType,	      // NVIDIA_MSG_TYPE
 	    command,		      // command
 	    NSM_SUCCESS,	      // completion code
 	    0,			      // reserved
 	    0,			      // reserved
 	    uint8_t(payloadSize),     // data size
 	    uint8_t(payloadSize >> 8) // data size
 	};
 	responseMsg.insert(responseMsg.end(), expectedPayload,
 			   expectedPayload + payloadSize);
 	auto response = reinterpret_cast<nsm_msg *>(responseMsg.data());
 	auto len = responseMsg.size();

 	// Good test
 	uint8_t cc = NSM_SUCCESS;
 	uint16_t reasonCode = ERR_NULL;
 	auto rc = function(response, len, &cc, &reasonCode, payload);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	EXPECT_EQ(NSM_SUCCESS, cc);
 	EXPECT_EQ(ERR_NULL, reasonCode);

 	// Bad tests
 	rc = function(nullptr, len, &cc, &reasonCode, payload);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(response, len, nullptr, &reasonCode, payload);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(response, len, &cc, nullptr, payload);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(response, len, &cc, &reasonCode, nullptr);
 	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
 	rc = function(response, len - 1, &cc, &reasonCode, payload);
 	EXPECT_EQ(NSM_SW_ERROR_LENGTH, rc);

 	Response badResponseMsg{
 	    0x10,
 	    0xDE,		 // PCI VID: NVIDIA 0x10DE
 	    (instanceId & 0x1f), // RQ=0, D=0, RSVD=0, INSTANCE_ID=0
 	    0x89,		 // OCP_TYPE=8, OCP_VER=9
 	    nvidiaMsgType,	 // NVIDIA_MSG_TYPE
 	    command,		 // command
 	    NSM_ERROR,		 // completion code
 	    ERR_TIMEOUT,	 // reason code
 	    0,			 // reason code
 	};
 	response = reinterpret_cast<nsm_msg *>(badResponseMsg.data());
 	len = badResponseMsg.size();
 	rc = function(response, len, &cc, &reasonCode, payload);
 	EXPECT_EQ(NSM_SW_SUCCESS, rc);
 	EXPECT_EQ(NSM_ERROR, cc);
 	EXPECT_EQ(ERR_TIMEOUT, reasonCode);
 }

 void testDecodeCommonResponse(
     std::function<int(const nsm_msg *, size_t, uint8_t *, uint16_t *)> function,
     uint8_t nvidiaMsgType, uint8_t command)
 {
 	uint8_t payload = 0;
 	testDecodeResponse(
 	    [function](const nsm_msg *msg, size_t len, uint8_t *cc,
 		       uint16_t *reasonCode, uint8_t *data) {
 		    if (data == nullptr) {
 			    // special case for function with one parameter less
 			    return (int)NSM_SW_ERROR_NULL;
 		    }
 		    return function(msg, len, cc, reasonCode);
 	    },
 	    nvidiaMsgType, command, 0, &payload, &payload);
 }
	/*
	* SPDX-FileCopyrightText: Copyright (c) 2023-2024 NVIDIA CORPORATION &
	* AFFILIATES. All rights reserved. SPDX-License-Identifier: Apache-2.0
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include "common-tests.hpp"
	#include <gmock/gmock.h>
	#include <gtest/gtest.h>

	using ::testing::ElementsAre;

	void testEncodeRequest(
	std::function<int(uint8_t, const uint8_t , nsm_msg )> function,
	uint8_t nvidiaMsgType, uint8_t command, uint8_t payloadSize,
	const uint8_t expectedPayload, uint8_t payload)
	{
	uint8_t instanceId = 0;
	Request requestMsg(sizeof(nsm_msg_hdr) + sizeof(nsm_common_req));
	requestMsg.insert(requestMsg.end(), expectedPayload,
	expectedPayload + payloadSize);

	auto request = reinterpret_cast<nsm_msg *>(requestMsg.data());
	nsm_common_req *data =
	reinterpret_cast<nsm_common_req *>(request->payload);

	// Bad tests
	auto rc = function(instanceId, nullptr, request);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(instanceId, expectedPayload, nullptr);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(NSM_INSTANCE_MAX + 1, expectedPayload, request);
	EXPECT_EQ(NSM_SW_ERROR_DATA, rc);

	// Good test
	rc = function(instanceId, expectedPayload, request);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	EXPECT_EQ(1, request->hdr.request);
	EXPECT_EQ(0, request->hdr.datagram);
	EXPECT_EQ(instanceId, request->hdr.instance_id);
	EXPECT_EQ(nvidiaMsgType, request->hdr.nvidia_msg_type);
	EXPECT_EQ(command, data->command);
	EXPECT_EQ(payloadSize, data->data_size);
	if (payload != nullptr) {
	memcpy(payload, request->payload + sizeof(nsm_common_req),
	payloadSize);
	}
	}

	void testEncodeCommonRequest(std::function<int(uint8_t, nsm_msg *)> function,
	uint8_t nvidiaMsgType, uint8_t command)
	{
	uint8_t payload = 0;
	testEncodeRequest(
	[function](uint8_t instanceId, const uint8_t data, nsm_msg msg) {
	if (data == nullptr) {
	// special case for function with one parameter less
	return (int)NSM_SW_ERROR_NULL;
	}
	return function(instanceId, msg);
	},
	nvidiaMsgType, command, 0, &payload, nullptr);
	}

	void testDecodeRequest(
	std::function<int(nsm_msg , uint16_t, uint8_t )> function,
	uint8_t nvidiaMsgType, uint8_t command, uint8_t payloadSize,
	const uint8_t expectedPayload, uint8_t payload)
	{
	const uint8_t instanceId = 0;
	Request requestMsg{
	0x10,
	0xDE, // PCI VID: NVIDIA 0x10DE
	0x80 \| (instanceId & 0x1f), // RQ=1, D=0, RSVD=0, INSTANCE_ID=0
	0x89, // OCP_TYPE=8, OCP_VER=9
	nvidiaMsgType, // NVIDIA_MSG_TYPE
	command, // command
	payloadSize // data size
	};
	requestMsg.insert(requestMsg.end(), expectedPayload,
	expectedPayload + payloadSize);
	auto request = reinterpret_cast<nsm_msg *>(requestMsg.data());
	auto data = reinterpret_cast<nsm_common_req *>(request->payload);
	auto len = requestMsg.size();

	// Good test
	auto rc = function(request, len, payload);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	nsm_header_info header;
	rc = unpack_nsm_header(&request->hdr, &header);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	EXPECT_EQ(nvidiaMsgType, header.nvidia_msg_type);
	EXPECT_EQ(command, data->command);
	EXPECT_EQ(payloadSize, data->data_size);
	EXPECT_EQ(instanceId, header.instance_id);

	// Bad tests
	rc = function(nullptr, len, payload);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(request, len, nullptr);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(request, len - 1, payload);
	EXPECT_EQ(NSM_SW_ERROR_LENGTH, rc);
	requestMsg[0] = 0;
	rc = function(request, len, payload);
	EXPECT_EQ(NSM_SW_ERROR_DATA, rc);
	}

	void testDecodeCommonRequest(std::function<int(nsm_msg *, uint16_t)> function,
	uint8_t nvidiaMsgType, uint8_t command)
	{
	uint8_t payload = 0;
	testDecodeRequest(
	[function](nsm_msg msg, uint16_t len, uint8_t data) {
	if (data == nullptr) {
	// special case for function with one parameter less
	return (int)NSM_SW_ERROR_NULL;
	}
	return function(msg, len);
	},
	nvidiaMsgType, command, 0, &payload, &payload);
	}

	void testEncodeResponse(
	std::function<int(uint8_t, uint8_t, uint16_t, const uint8_t , nsm_msg )>
	function,
	uint8_t nvidiaMsgType, uint8_t command, size_t payloadSize,
	const uint8_t expectedPayload, uint8_t payload)
	{
	// Test common response
	const uint8_t instanceId = 0;
	Response responseMsg(sizeof(nsm_msg_hdr) + sizeof(nsm_common_resp));
	responseMsg.insert(responseMsg.end(), expectedPayload,
	expectedPayload + payloadSize);
	auto response = reinterpret_cast<nsm_msg *>(responseMsg.data());
	auto common = reinterpret_cast<nsm_common_resp *>(response->payload);

	// Good test
	uint8_t cc = NSM_SUCCESS;
	uint16_t reasonCode = ERR_NULL;
	auto rc =
	function(instanceId, cc, reasonCode, expectedPayload, response);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	EXPECT_EQ(0, response->hdr.request);
	EXPECT_EQ(0, response->hdr.datagram);
	EXPECT_EQ(instanceId, response->hdr.instance_id);
	EXPECT_EQ(nvidiaMsgType, response->hdr.nvidia_msg_type);
	EXPECT_EQ(command, common->command);
	EXPECT_EQ(cc, common->completion_code);
	EXPECT_EQ(payloadSize, le16toh(common->data_size));
	if (payload != nullptr) {
	memcpy(payload, response->payload + sizeof(nsm_common_resp),
	payloadSize);
	}

	// Bad tests
	Response badResponseMsg(sizeof(nsm_msg_hdr) +
	sizeof(nsm_common_non_success_resp));
	auto badResponse = reinterpret_cast<nsm_msg *>(badResponseMsg.data());
	auto badData = reinterpret_cast<nsm_common_non_success_resp *>(
	badResponse->payload);
	rc = function(instanceId, cc, reasonCode, nullptr, response);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(instanceId, cc, reasonCode, expectedPayload, nullptr);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(NSM_INSTANCE_MAX + 1, cc, reasonCode, expectedPayload,
	response);
	EXPECT_EQ(NSM_SW_ERROR_DATA, rc);
	cc = NSM_ERROR;
	reasonCode = ERR_TIMEOUT;
	rc = function(instanceId, cc, reasonCode, expectedPayload, badResponse);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	EXPECT_EQ(command, badData->command);
	EXPECT_EQ(cc, badData->completion_code);
	EXPECT_EQ(reasonCode, badData->reason_code);
	}

	void testEncodeCommonResponse(
	std::function<int(uint8_t, uint8_t, uint16_t, nsm_msg *)> function,
	uint8_t nvidiaMsgType, uint8_t command)
	{
	const uint8_t payload = 0;
	testEncodeResponse(
	[function](uint8_t instanceId, uint8_t cc, uint16_t reasonCode,
	const uint8_t data, nsm_msg msg) {
	if (data == nullptr) {
	// special case for function with one parameter less
	return (int)NSM_SW_ERROR_NULL;
	}
	return function(instanceId, cc, reasonCode, msg);
	},
	nvidiaMsgType, command, 0, &payload, nullptr);
	}

	void testDecodeResponse(std::function<int(const nsm_msg , size_t, uint8_t ,
	uint16_t , uint8_t )>
	function,
	uint8_t nvidiaMsgType, uint8_t command,
	size_t payloadSize, const uint8_t *expectedPayload,
	uint8_t *payload)
	{
	const uint8_t instanceId = 0;
	Response responseMsg{
	0x10,
	0xDE, // PCI VID: NVIDIA 0x10DE
	(instanceId & 0x1f), // RQ=0, D=0, RSVD=0, INSTANCE_ID=0
	0x89, // OCP_TYPE=8, OCP_VER=9
	nvidiaMsgType, // NVIDIA_MSG_TYPE
	command, // command
	NSM_SUCCESS, // completion code
	0, // reserved
	0, // reserved
	uint8_t(payloadSize), // data size
	uint8_t(payloadSize >> 8) // data size
	};
	responseMsg.insert(responseMsg.end(), expectedPayload,
	expectedPayload + payloadSize);
	auto response = reinterpret_cast<nsm_msg *>(responseMsg.data());
	auto len = responseMsg.size();

	// Good test
	uint8_t cc = NSM_SUCCESS;
	uint16_t reasonCode = ERR_NULL;
	auto rc = function(response, len, &cc, &reasonCode, payload);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	EXPECT_EQ(NSM_SUCCESS, cc);
	EXPECT_EQ(ERR_NULL, reasonCode);

	// Bad tests
	rc = function(nullptr, len, &cc, &reasonCode, payload);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(response, len, nullptr, &reasonCode, payload);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(response, len, &cc, nullptr, payload);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(response, len, &cc, &reasonCode, nullptr);
	EXPECT_EQ(NSM_SW_ERROR_NULL, rc);
	rc = function(response, len - 1, &cc, &reasonCode, payload);
	EXPECT_EQ(NSM_SW_ERROR_LENGTH, rc);

	Response badResponseMsg{
	0x10,
	0xDE, // PCI VID: NVIDIA 0x10DE
	(instanceId & 0x1f), // RQ=0, D=0, RSVD=0, INSTANCE_ID=0
	0x89, // OCP_TYPE=8, OCP_VER=9
	nvidiaMsgType, // NVIDIA_MSG_TYPE
	command, // command
	NSM_ERROR, // completion code
	ERR_TIMEOUT, // reason code
	0, // reason code
	};
	response = reinterpret_cast<nsm_msg *>(badResponseMsg.data());
	len = badResponseMsg.size();
	rc = function(response, len, &cc, &reasonCode, payload);
	EXPECT_EQ(NSM_SW_SUCCESS, rc);
	EXPECT_EQ(NSM_ERROR, cc);
	EXPECT_EQ(ERR_TIMEOUT, reasonCode);
	}

	void testDecodeCommonResponse(
	std::function<int(const nsm_msg , size_t, uint8_t , uint16_t *)> function,
	uint8_t nvidiaMsgType, uint8_t command)
	{
	uint8_t payload = 0;
	testDecodeResponse(
	[function](const nsm_msg msg, size_t len, uint8_t cc,
	uint16_t reasonCode, uint8_t data) {
	if (data == nullptr) {
	// special case for function with one parameter less
	return (int)NSM_SW_ERROR_NULL;
	}
	return function(msg, len, cc, reasonCode);
	},
	nvidiaMsgType, command, 0, &payload, &payload);
	}