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      1 # Copyright 2014 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 import common
      6 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_channel
      7 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_constants
      8 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors
      9 from autotest_lib.client.cros.cellular.mbim_compliance \
     10         import mbim_message_request
     11 from autotest_lib.client.cros.cellular.mbim_compliance \
     12         import mbim_message_response
     13 from autotest_lib.client.cros.cellular.mbim_compliance \
     14         import mbim_test_base
     15 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
     16         import get_descriptors_sequence
     17 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \
     18         import mbim_open_generic_sequence
     19 
     20 
     21 class cellular_MbimComplianceCM07(mbim_test_base.MbimTestBase):
     22     """
     23     CM_07 Validation of status in case of an unsupported CID in MBIM_COMMAND_MSG.
     24 
     25     This test verifies that the function returns MBIM_STATUS_NO_DEVICE_SUPPORT
     26     in Status field of the MBIM_COMMAND_DONE response when a command is not
     27     supported by the function.
     28 
     29     Reference:
     30         [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 40
     31         http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf
     32     """
     33     version = 1
     34 
     35     def run_internal(self):
     36         """ Run CM_07 test. """
     37         # Precondition
     38         descriptors = get_descriptors_sequence.GetDescriptorsSequence(
     39                 self.device_context).run()
     40         self.device_context.update_descriptor_cache(descriptors)
     41         mbim_open_generic_sequence.MBIMOpenGenericSequence(
     42                 self.device_context).run()
     43 
     44         # Step 1
     45         # 255 is an unsupported CID.
     46         device_context = self.device_context
     47         descriptor_cache = device_context.descriptor_cache
     48         command_message = mbim_message_request.MBIMCommand(
     49                 device_service_id=mbim_constants.UUID_BASIC_CONNECT.bytes,
     50                 cid=255,
     51                 command_type=mbim_constants.COMMAND_TYPE_QUERY,
     52                 information_buffer_length=0)
     53         packets = mbim_message_request.generate_request_packets(
     54                 command_message,
     55                 device_context.max_control_transfer_size)
     56         channel = mbim_channel.MBIMChannel(
     57                 device_context._device,
     58                 descriptor_cache.mbim_communication_interface.bInterfaceNumber,
     59                 descriptor_cache.interrupt_endpoint.bEndpointAddress,
     60                 device_context.max_control_transfer_size)
     61         response_packets = channel.bidirectional_transaction(*packets)
     62         channel.close()
     63 
     64         # Step 2
     65         response_message = mbim_message_response.parse_response_packets(
     66                 response_packets)
     67 
     68         # Step 3
     69         if (response_message.message_type != mbim_constants.MBIM_COMMAND_DONE or
     70             (response_message.status_codes !=
     71              mbim_constants.MBIM_STATUS_NO_DEVICE_SUPPORT)):
     72             mbim_errors.log_and_raise(mbim_errors.MBIMComplianceAssertionError,
     73                                       'mbim1.0:9.4.5#2')
     74