1 # Copyright 2015 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 6 import common 7 from autotest_lib.client.bin import utils 8 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_channel 9 from autotest_lib.client.cros.cellular.mbim_compliance \ 10 import mbim_command_message 11 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors 12 from autotest_lib.client.cros.cellular.mbim_compliance \ 13 import mbim_message_request 14 from autotest_lib.client.cros.cellular.mbim_compliance \ 15 import mbim_message_response 16 from autotest_lib.client.cros.cellular.mbim_compliance \ 17 import mbim_test_base 18 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ 19 import get_descriptors_sequence 20 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ 21 import mbim_open_generic_sequence 22 23 24 class cellular_MbimComplianceCM05(mbim_test_base.MbimTestBase): 25 """ 26 CM_05 Validation for modem's responses to two consecutive MBIM command 27 messages are correct with regards to |transaction_id|, |service_id| and 28 |cid|. 29 30 This test verifies that the function uses separate transactions to deliver 31 control message responses. 32 33 Reference: 34 [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 39 35 http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf 36 """ 37 version = 1 38 39 def run_internal(self): 40 """ Run CM_05 test. """ 41 # Precondition 42 descriptors = get_descriptors_sequence.GetDescriptorsSequence( 43 self.device_context).run() 44 self.device_context.update_descriptor_cache(descriptors) 45 mbim_open_generic_sequence.MBIMOpenGenericSequence( 46 self.device_context).run() 47 48 device_context = self.device_context 49 descriptor_cache = device_context.descriptor_cache 50 self.channel = mbim_channel.MBIMChannel( 51 device_context._device, 52 descriptor_cache.mbim_communication_interface.bInterfaceNumber, 53 descriptor_cache.interrupt_endpoint.bEndpointAddress, 54 device_context.max_control_transfer_size) 55 56 # Step 1 57 caps_command_message = mbim_command_message.MBIMDeviceCapsQuery() 58 caps_packets = mbim_message_request.generate_request_packets( 59 caps_command_message, 60 device_context.max_control_transfer_size) 61 self.caps_transaction_id = caps_command_message.transaction_id 62 self.channel.unidirectional_transaction(*caps_packets) 63 64 # Step 2 65 services_command_message = ( 66 mbim_command_message.MBIMDeviceServicesQuery()) 67 services_packets = mbim_message_request.generate_request_packets( 68 services_command_message, 69 device_context.max_control_transfer_size) 70 self.services_transaction_id = services_command_message.transaction_id 71 self.channel.unidirectional_transaction(*services_packets) 72 73 # Step 3 74 utils.poll_for_condition( 75 self._get_response_packets, 76 timeout=5, 77 exception=mbim_errors.MBIMComplianceChannelError( 78 'Failed to retrieve the response packets to specific ' 79 'control messages.')) 80 self.channel.close() 81 82 caps_response_message = self.caps_response 83 services_response_message = self.services_response 84 is_caps_message_valid = isinstance( 85 caps_response_message, 86 mbim_command_message.MBIMDeviceCapsInfo) 87 is_services_message_valid = isinstance( 88 services_response_message, 89 mbim_command_message.MBIMDeviceServicesInfo) 90 if not ((is_caps_message_valid and is_services_message_valid) and 91 (caps_response_message.transaction_id == 92 caps_command_message.transaction_id) and 93 (caps_response_message.device_service_id == 94 caps_command_message.device_service_id) and 95 caps_response_message.cid == caps_command_message.cid and 96 (services_command_message.transaction_id == 97 services_response_message.transaction_id) and 98 (services_command_message.device_service_id == 99 services_response_message.device_service_id) and 100 services_command_message.cid == services_response_message.cid): 101 mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError, 102 'mbim1.0:8.1.2#2') 103 104 105 def _get_response_packets(self): 106 """ 107 Condition method for |poll_for_condition| to check the retrieval of 108 target packets. 109 110 @returns True if both caps response packet and services response packet 111 are received, False otherwise. 112 113 """ 114 packets = self.channel.get_outstanding_packets() 115 self.caps_response = None 116 self.services_response = None 117 for packet in packets: 118 message_response = mbim_message_response.parse_response_packets( 119 packet) 120 if message_response.transaction_id == self.caps_transaction_id: 121 self.caps_response = message_response 122 elif message_response.transaction_id == self.services_transaction_id: 123 self.services_response = message_response 124 if self.caps_response and self.services_response: 125 return True 126 return False 127
