144 lines
6.3 KiB
Python
144 lines
6.3 KiB
Python
# Copyright 2015 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import logging
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import common
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from autotest_lib.client.bin import utils
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from autotest_lib.client.cros.cellular.mbim_compliance import mbim_channel
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from autotest_lib.client.cros.cellular.mbim_compliance \
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import mbim_command_message
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from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors
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from autotest_lib.client.cros.cellular.mbim_compliance \
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import mbim_message_request
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from autotest_lib.client.cros.cellular.mbim_compliance \
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import mbim_message_response
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from autotest_lib.client.cros.cellular.mbim_compliance \
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import mbim_test_base
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from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
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import get_descriptors_sequence
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from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
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import mbim_open_generic_sequence
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class cellular_MbimComplianceCM16(mbim_test_base.MbimTestBase):
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"""
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CM_16 Validation of fragmented message transmission in case of multiple
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fragmented messages.
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This test verifies that fragmented messages sent from the function are not
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intermixed. Note that this test is only applicable for devices that support
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multiple outstanding commands.
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Reference:
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[1] Universal Serial Bus Communication Class MBIM Compliance Testing: 44
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http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf
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"""
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version = 1
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def run_internal(self):
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""" Run CM_16 test. """
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# Precondition
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desc_sequence = get_descriptors_sequence.GetDescriptorsSequence(
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self.device_context)
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descriptors = desc_sequence.run()
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self.device_context.update_descriptor_cache(descriptors)
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open_sequence = mbim_open_generic_sequence.MBIMOpenGenericSequence(
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self.device_context)
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open_sequence.run(max_control_transfer_size=64)
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device_context = self.device_context
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descriptor_cache = device_context.descriptor_cache
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self.channel = mbim_channel.MBIMChannel(
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device_context.device,
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descriptor_cache.mbim_communication_interface.bInterfaceNumber,
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descriptor_cache.interrupt_endpoint.bEndpointAddress,
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device_context.max_control_transfer_size)
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# Step 1
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caps_command_message = mbim_command_message.MBIMDeviceCapsQuery()
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caps_packets = mbim_message_request.generate_request_packets(
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caps_command_message,
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device_context.max_control_transfer_size)
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self.caps_transaction_id = caps_command_message.transaction_id
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# Step 2
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services_command_message = (
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mbim_command_message.MBIMDeviceServicesQuery())
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services_packets = mbim_message_request.generate_request_packets(
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services_command_message,
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device_context.max_control_transfer_size)
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self.services_transaction_id = services_command_message.transaction_id
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# Transmit the messages now
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self.channel.unidirectional_transaction(*caps_packets)
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self.channel.unidirectional_transaction(*services_packets)
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# Step 3
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utils.poll_for_condition(
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self._get_response_packets,
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timeout=5,
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exception=mbim_errors.MBIMComplianceChannelError(
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'Failed to retrieve the response packets to specific '
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'control messages.'))
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self.channel.close()
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caps_response_message = self.caps_response
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services_response_message = self.services_response
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is_caps_message_valid = isinstance(
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caps_response_message,
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mbim_command_message.MBIMDeviceCapsInfo)
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is_services_message_valid = isinstance(
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services_response_message,
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mbim_command_message.MBIMDeviceServicesInfo)
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if not ((is_caps_message_valid and is_services_message_valid) and
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(caps_response_message.transaction_id ==
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caps_command_message.transaction_id) and
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(caps_response_message.device_service_id ==
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caps_command_message.device_service_id) and
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caps_response_message.cid == caps_command_message.cid and
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(services_command_message.transaction_id ==
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services_response_message.transaction_id) and
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(services_command_message.device_service_id ==
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services_response_message.device_service_id) and
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services_command_message.cid == services_response_message.cid):
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mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError,
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'mbim1.0:9.5#1')
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def _get_response_packets(self):
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"""
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Condition method for |poll_for_condition| to check the retrieval of
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target packets.
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@returns True if both caps response packet and services response packet
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are received, False otherwise.
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"""
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try:
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packets = self.channel.get_outstanding_packets()
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except mbim_errors.MBIMComplianceChannelError:
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logging.debug("Error in receiving response fragments from the device")
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mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError,
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'mbim1.0:9.5#1')
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self.caps_response = None
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self.services_response = None
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for packet in packets:
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try:
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message_response = mbim_message_response.parse_response_packets(
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packet)
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except mbim_errors.MBIMComplianceControlMessageError:
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logging.debug("Error in parsing response fragments from the device")
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mbim_errors.log_and_raise(
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mbim_errors.MBIMComplianceAssertionError,
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'mbim1.0:9.5#1')
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if message_response.transaction_id == self.caps_transaction_id:
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self.caps_response = message_response
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elif (message_response.transaction_id ==
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self.services_transaction_id):
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self.services_response = message_response
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if self.caps_response and self.services_response:
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return True
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return False
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