tree 1190c83f76fc686d2a4c7150e672c696c231028f
parent 533955996b72ece7a305f9276762e47f8f1da52d
author Zsolt Haraszti <zharaszt@ciena.com> 1456895932 +0000
committer Ali Al-Shabibi <ali@onlab.us> 1456897015 +0000

Improve support for CPqD and parameterize tests

Changes:

- Made device_type a test_params so it can be controller from the
  command line and can be used to switch between device-specific
  behavior. The current device types are:

  pmc:
    To work with the PMC OLT.
    On this device when the inner VLAN tag is popped, the device actually
    emits a frame with VLAN tag 0 and PCP 0. Or, put it another way,
    the way to emit a frame with a zero VLAN tag and zero PCP is to pop
    the vlan header. Weird.

  cpqd:
    User-space switch which cannot receive zero-tagged vlans
    due to kernel limitations.
    On this device when a frame arrives with a VLAN tag 0 and PCP 0,
    the kernel removes the VLAN header before the frame is passed to the
    user-space switch. Wireshark/tcpdump still shows the header, but
    not the app. This is addressed in the tests with not expecting
    a VLAN header in such cases.

  normal:
    This is intended for "per-the-books" openflow switches
    that do exactly what the flow rules say

- Adjusted some of the test-cases to support the 3 device types

- IGMP packet generator using scapy.
  This is still work in progress, but this is a fairly accurate IGMP
  pkt generator using scapy. The membership query is considered complete,
  but the fields for the memberhip reports still need to be added.

  There is a simple self-test at the end of the lib which can be executed
  by just running 'python IGMP.py'

- Added verbage to README.md how to run on CPqD

- Added command line option -u to olt-topo to bring up mininet with
  user-space reference switch CPqD

- Fixed mixed tab/space use in olt.py

Conflicts:
	olt.py

Change-Id: I23553c228c20614c5e97e097fad4c578817d62c3