| # 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. |
| """ |
| Loopback NTB-16/32 Sequence |
| |
| Reference: |
| [1] Universal Serial Bus Communication Class MBIM Compliance Testing: 20 |
| http://www.usb.org/developers/docs/devclass_docs/MBIM-Compliance-1.0.pdf |
| """ |
| import array |
| |
| import common |
| from autotest_lib.client.cros.cellular.mbim_compliance import mbim_data_transfer |
| from autotest_lib.client.cros.cellular.mbim_compliance.sequences \ |
| import sequence |
| |
| class LoopbackSequence(sequence.Sequence): |
| """ |
| Data loopback sequence used for data transfer testing. |
| |
| In this sequence, we send out an IPv4 ping packet to the device which is |
| in |connected| state and fetch the repsonse packet received from the device. |
| |
| """ |
| # Payload to be used for our test. This is an IPv4 ICMP ping packet |
| DATA_PAYLOAD = array.array('B', [0x45, 0x00, 0x00, 0x54, 0xB4, 0x5A, 0x00, |
| 0x00, 0x40, 0x01, 0x42, 0xF2, 0xC0, 0xA8, |
| 0x01, 0x0B, 0xC0, 0xA8, 0x01, 0x01, 0x00, |
| 0x00, 0x54, 0xC0, 0x3C, 0xD7, 0x00, 0x08, |
| 0x6A, 0x6F, 0xB5, 0x54, 0x00, 0x00, 0x00, |
| 0x00, 0x8B, 0xC9, 0x04, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x10, 0x11, 0x12, 0x13, 0x14, |
| 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, |
| 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, |
| 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, |
| 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, |
| 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37]) |
| |
| def run_internal(self, ntb_format): |
| """ |
| Run the MBIM Loopback Sequence. |
| |
| Need to run the |connect| sequence before invoking this loopback |
| sequence. |
| |
| @param ntb_format: Whether to send/receive an NTB16 or NTB32 frame. |
| Possible values: NTB_FORMAT_16, NTB_FORMAT_32 (mbim_constants) |
| @returns tuple of (nth, ndp, ndp_entries, payload) where, |
| nth - NTH header object received. |
| ndp - NDP header object received. |
| ndp_entries - Array of NDP entry header objects. |
| payload - Array of packets where each packet is a byte array. |
| |
| """ |
| # Step 1 is to run |connect| sequence which is expected to be run |
| # before calling this to avoid calling sequences within another |
| # sequence. |
| |
| # Step 2 |
| data_transfer = mbim_data_transfer.MBIMDataTransfer(self.device_context) |
| data_transfer.send_data_packets(ntb_format, [self.DATA_PAYLOAD]) |
| |
| # Step 3 |
| nth, ndp, ndp_entries, payload = data_transfer.receive_data_packets( |
| ntb_format) |
| |
| return (nth, ndp, ndp_entries, payload) |
