# Copyright 2014 The Chromium OS Authors. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. import array import struct import common from autotest_lib.client.cros.cellular.mbim_compliance import mbim_channel from autotest_lib.client.cros.cellular.mbim_compliance import mbim_constants from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors from autotest_lib.client.cros.cellular.mbim_compliance \ import mbim_message_request from autotest_lib.client.cros.cellular.mbim_compliance \ import mbim_message_response from autotest_lib.client.cros.cellular.mbim_compliance \ import mbim_test_base from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ import get_descriptors_sequence from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ import mbim_open_generic_sequence class cellular_MbimComplianceCM08(mbim_test_base.MbimTestBase): """ CM_08 Validation of InformationBuffer in case of a failure in MBIM_COMMAND_MSG. This test verifies that in case of a command failure the buffer in the MBIM_COMMAND_DONE response is empty. Reference: [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 40 http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf """ version = 1 def run_internal(self): """ Run CM_08 test. """ # Precondition descriptors = get_descriptors_sequence.GetDescriptorsSequence( self.device_context).run() self.device_context.update_descriptor_cache(descriptors) mbim_open_generic_sequence.MBIMOpenGenericSequence( self.device_context).run() # Step 1 device_context = self.device_context descriptor_cache = device_context.descriptor_cache command_message = mbim_message_request.MBIMCommand( device_service_id=mbim_constants.UUID_BASIC_CONNECT.bytes, cid=mbim_constants.MBIM_CID_RADIO_STATE, command_type=mbim_constants.COMMAND_TYPE_SET, information_buffer_length=4, payload_buffer=array.array('B', struct.pack('I', 2))) packets = mbim_message_request.generate_request_packets( command_message, device_context.max_control_transfer_size) channel = mbim_channel.MBIMChannel( device_context._device, descriptor_cache.mbim_communication_interface.bInterfaceNumber, descriptor_cache.interrupt_endpoint.bEndpointAddress, device_context.max_control_transfer_size) response_packets = channel.bidirectional_transaction(*packets) channel.close() # Step 2 response_message = mbim_message_response.parse_response_packets( response_packets) # Step 3 if ((response_message.message_type != mbim_constants.MBIM_COMMAND_DONE) or (response_message.status_codes == mbim_constants.MBIM_STATUS_SUCCESS) or response_message.information_buffer_length != 0): mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError, 'mbim1.0:9.4.5#3')