| # Copyright 2015 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 logging |
| |
| import common |
| from autotest_lib.client.bin import utils |
| from autotest_lib.client.cros.cellular.mbim_compliance import mbim_channel |
| from autotest_lib.client.cros.cellular.mbim_compliance \ |
| import mbim_command_message |
| 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_MbimComplianceCM16(mbim_test_base.MbimTestBase): |
| """ |
| CM_16 Validation of fragmented message transmission in case of multiple |
| fragmented messages. |
| |
| This test verifies that fragmented messages sent from the function are not |
| intermixed. Note that this test is only applicable for devices that support |
| multiple outstanding commands. |
| |
| Reference: |
| [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 44 |
| http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf |
| """ |
| version = 1 |
| |
| def run_internal(self): |
| """ Run CM_16 test. """ |
| # Precondition |
| desc_sequence = get_descriptors_sequence.GetDescriptorsSequence( |
| self.device_context) |
| descriptors = desc_sequence.run() |
| self.device_context.update_descriptor_cache(descriptors) |
| open_sequence = mbim_open_generic_sequence.MBIMOpenGenericSequence( |
| self.device_context) |
| open_sequence.run(max_control_transfer_size=64) |
| |
| device_context = self.device_context |
| descriptor_cache = device_context.descriptor_cache |
| self.channel = mbim_channel.MBIMChannel( |
| device_context.device, |
| descriptor_cache.mbim_communication_interface.bInterfaceNumber, |
| descriptor_cache.interrupt_endpoint.bEndpointAddress, |
| device_context.max_control_transfer_size) |
| |
| # Step 1 |
| caps_command_message = mbim_command_message.MBIMDeviceCapsQuery() |
| caps_packets = mbim_message_request.generate_request_packets( |
| caps_command_message, |
| device_context.max_control_transfer_size) |
| self.caps_transaction_id = caps_command_message.transaction_id |
| |
| # Step 2 |
| services_command_message = ( |
| mbim_command_message.MBIMDeviceServicesQuery()) |
| services_packets = mbim_message_request.generate_request_packets( |
| services_command_message, |
| device_context.max_control_transfer_size) |
| self.services_transaction_id = services_command_message.transaction_id |
| |
| # Transmit the messages now |
| self.channel.unidirectional_transaction(*caps_packets) |
| self.channel.unidirectional_transaction(*services_packets) |
| |
| # Step 3 |
| utils.poll_for_condition( |
| self._get_response_packets, |
| timeout=5, |
| exception=mbim_errors.MBIMComplianceChannelError( |
| 'Failed to retrieve the response packets to specific ' |
| 'control messages.')) |
| self.channel.close() |
| |
| caps_response_message = self.caps_response |
| services_response_message = self.services_response |
| is_caps_message_valid = isinstance( |
| caps_response_message, |
| mbim_command_message.MBIMDeviceCapsInfo) |
| is_services_message_valid = isinstance( |
| services_response_message, |
| mbim_command_message.MBIMDeviceServicesInfo) |
| if not ((is_caps_message_valid and is_services_message_valid) and |
| (caps_response_message.transaction_id == |
| caps_command_message.transaction_id) and |
| (caps_response_message.device_service_id == |
| caps_command_message.device_service_id) and |
| caps_response_message.cid == caps_command_message.cid and |
| (services_command_message.transaction_id == |
| services_response_message.transaction_id) and |
| (services_command_message.device_service_id == |
| services_response_message.device_service_id) and |
| services_command_message.cid == services_response_message.cid): |
| mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError, |
| 'mbim1.0:9.5#1') |
| |
| |
| def _get_response_packets(self): |
| """ |
| Condition method for |poll_for_condition| to check the retrieval of |
| target packets. |
| |
| @returns True if both caps response packet and services response packet |
| are received, False otherwise. |
| |
| """ |
| try: |
| packets = self.channel.get_outstanding_packets() |
| except mbim_errors.MBIMComplianceChannelError: |
| logging.debug("Error in receiving response fragments from the device") |
| mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError, |
| 'mbim1.0:9.5#1') |
| self.caps_response = None |
| self.services_response = None |
| for packet in packets: |
| try: |
| message_response = mbim_message_response.parse_response_packets( |
| packet) |
| except mbim_errors.MBIMComplianceControlMessageError: |
| logging.debug("Error in parsing response fragments from the device") |
| mbim_errors.log_and_raise( |
| mbim_errors.MBIMComplianceAssertionError, |
| 'mbim1.0:9.5#1') |
| if message_response.transaction_id == self.caps_transaction_id: |
| self.caps_response = message_response |
| elif (message_response.transaction_id == |
| self.services_transaction_id): |
| self.services_response = message_response |
| if self.caps_response and self.services_response: |
| return True |
| return False |
