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_constants 7 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_data_transfer 8 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_dts_test_base 9 from autotest_lib.client.cros.cellular.mbim_compliance import mbim_errors 10 from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ 11 import loopback_sequence 12 13 14 class cellular_MbimComplianceDTS1420(mbim_dts_test_base.MbimDtsTestBase): 15 """ 16 Validation of dwSignature for IP Stream. 17 18 This test validates 16/32-bit NCM Datagram Pointer signature for IP stream. 19 20 Reference: 21 [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 33 22 http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf 23 24 """ 25 version = 1 26 27 def run_internal(self, ntb_format): 28 """ 29 Run DTS_14/DTS_20 test. 30 31 @param ntb_format: Whether to send/receive an NTB16 or NTB32 frame. 32 Possible values: NTB_FORMAT_16, NTB_FORMAT_32 (mbim_constants) 33 34 """ 35 # Precondition 36 _, _, _ = self.run_precondition(ntb_format) 37 38 # Step 1 39 loopback = loopback_sequence.LoopbackSequence(self.device_context) 40 _, ndp, _, _ = loopback.run(ntb_format=ntb_format) 41 42 # Step 2 43 if ntb_format == mbim_constants.NTB_FORMAT_16: 44 if ndp.signature != mbim_data_transfer.NDP_SIGNATURE_IPS_16: 45 mbim_errors.log_and_raise( 46 mbim_errors.MBIMComplianceAssertionError, 47 'mbim1.0:7#1') 48 else: 49 if ndp.signature != mbim_data_transfer.NDP_SIGNATURE_IPS_32: 50 mbim_errors.log_and_raise( 51 mbim_errors.MBIMComplianceAssertionError, 52 'mbim1.0:7#3') 53
