| # Copyright (c) 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. |
| |
| """ |
| CM_05 Validatation for modem's responses to two consecutive MBIM command |
| messages are correct with regards to |transaction_id|, |service_id| and |cid|. |
| |
| Reference: |
| [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 39 |
| http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf |
| """ |
| 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_constants |
| from autotest_lib.client.cros.cellular.mbim_compliance import mbim_control |
| from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors |
| from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ |
| import mbim_open_generic_sequence |
| from autotest_lib.client.cros.cellular.mbim_compliance.tests import test |
| |
| |
| class CM05Test(test.Test): |
| """ Implement the CM_05 test. """ |
| |
| def run_internal(self): |
| """ Run CM_05 test. """ |
| # Precondition |
| mbim_open_generic_sequence.MBIMOpenGenericSequence( |
| self.test_context).run() |
| |
| caps_command_message = mbim_control.MBIMCommandMessage( |
| device_service_id=mbim_constants.UUID_BASIC_CONNECT.bytes, |
| cid=mbim_constants.MBIM_CID_DEVICE_CAPS, |
| command_type=mbim_constants.COMMAND_TYPE_QUERY, |
| information_buffer_length=0) |
| caps_packets = caps_command_message.generate_packets() |
| services_command_message = mbim_control.MBIMCommandMessage( |
| device_service_id=mbim_constants.UUID_BASIC_CONNECT.bytes, |
| cid=mbim_constants.MBIM_CID_DEVICE_SERVICES, |
| command_type=mbim_constants.COMMAND_TYPE_QUERY, |
| information_buffer_length=0) |
| services_packets = services_command_message.generate_packets() |
| self.caps_transaction_id = caps_command_message.transaction_id |
| self.services_transaction_id = services_command_message.transaction_id |
| self.channel = mbim_channel.MBIMChannel( |
| {'idVendor': self.test_context.id_vendor, |
| 'idProduct': self.test_context.id_product}, |
| self.test_context.mbim_communication_interface.bInterfaceNumber, |
| self.test_context.interrupt_endpoint.bEndpointAddress, |
| self.test_context.mbim_functional.wMaxControlMessage) |
| # Step 1 |
| self.channel.unidirectional_transaction(*caps_packets) |
| # Step 2 |
| self.channel.unidirectional_transaction(*services_packets) |
| |
| 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 = mbim_control.parse_response_packets( |
| self.caps_response_packet) |
| services_response_message = mbim_control.parse_response_packets( |
| self.services_response_packet) |
| |
| # Step 3 |
| if not ((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, |
| 'mbim1.0:8.1.2#2') |
| |
| |
| 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. |
| |
| """ |
| self.caps_response_packet, self.services_response_packet = None, None |
| packets = self.channel.get_outstanding_packets() |
| header = {} |
| for packet in packets: |
| for fragment in packet: |
| try: |
| header = mbim_control.MBIMHeader.unpack(fragment) |
| except mbim_errors.MBIMComplianceControlMessageError: |
| continue |
| if header.get('transaction_id') == self.caps_transaction_id: |
| self.caps_response_packet = packet |
| elif (header.get('transaction_id') == |
| self.services_transaction_id): |
| self.services_response_packet = packet |
| if self.caps_response_packet and self.services_response_packet: |
| return True |
| return False |
