861 lines
31 KiB
Python
861 lines
31 KiB
Python
#! /usr/bin/env python
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# standard modules
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import logging
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import os
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import re
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import subprocess
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import sys
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import time
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import pytest
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from fabric.api import run, env, sudo
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#from harness import Test, TestSuite, TestPreRequisiteError
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sys.path.insert(1, '../binding')
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from core import ost_pb, emul, DroneProxy
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from rpc import RpcError
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from protocols.mac_pb2 import mac, Mac
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from protocols.ip4_pb2 import ip4, Ip4
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from protocols.vlan_pb2 import vlan
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use_defaults = True
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if sys.platform == 'win32':
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tshark = r'C:\Program Files\Wireshark\tshark.exe'
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else:
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tshark = 'tshark'
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# initialize defaults - drone
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host_name = '127.0.0.1'
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# initialize defaults - DUT
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env.use_shell = False
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env.user = 'tc'
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env.password = 'tc'
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env.host_string = 'localhost:50022'
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# setup logging
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log = logging.getLogger(__name__)
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logging.basicConfig(level=logging.INFO)
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# command-line option/arg processing
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if len(sys.argv) > 1:
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if sys.argv[1] in ('-d', '--use-defaults'):
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use_defaults = True
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if sys.argv[1] in ('-h', '--help'):
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print('%s [OPTION]...' % (sys.argv[0]))
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print('Options:')
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print(' -d --use-defaults run using default values')
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print(' -h --help show this help')
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sys.exit(0)
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print('This module uses the following topology -')
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print('')
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print(' +-------+ +-------+')
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print(' | |Tx--->---Rx|-+ |')
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print(' | Drone | | v DUT |')
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print(' | |Rx---<---Tx|-+ |')
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print(' +-------+ +-------+')
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print('')
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print('Drone has 2 ports connected to DUT. Packets sent on the Tx port')
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print('are expected to be forwarded by the DUT and received back on the')
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print('Rx port')
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print('')
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if not use_defaults:
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s = raw_input('Drone\'s Hostname/IP [%s]: ' % (host_name))
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host_name = s or host_name
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s = raw_input('DUT\'s Hostname/IP [%s]: ' % (env.host_string))
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env.host_string = s or env.host_string
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# FIXME: get inputs for dut rx/tx ports
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# ================================================================= #
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# ----------------------------------------------------------------- #
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# FIXTURES
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# ----------------------------------------------------------------- #
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# ================================================================= #
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# ----------------------------------------------------------------- #
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# Baseline Configuration for subsequent testcases
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# NOTES
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# * All test cases will emulate devices on both rx and tx ports
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# * Each test case will create traffic streams corresponding to
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# the devices to check
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# ----------------------------------------------------------------- #
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@pytest.fixture(scope='module')
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def drone(request):
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drn = DroneProxy(host_name)
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log.info('connecting to drone(%s:%d)' % (drn.hostName(), drn.portNumber()))
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drn.connect()
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def fin():
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drn.disconnect()
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request.addfinalizer(fin)
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return drn
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@pytest.fixture(scope='module')
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def ports(request, drone):
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port_id_list = drone.getPortIdList()
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port_config_list = drone.getPortConfig(port_id_list)
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assert len(port_config_list.port) != 0
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# print port list and find default tx/rx ports
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tx_number = -1
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rx_number = -1
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print port_config_list
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print('Port List')
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print('---------')
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for port in port_config_list.port:
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print('%d.%s (%s)' % (port.port_id.id, port.name, port.description))
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# use a vhost port as default tx/rx port
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if ('vhost' in port.name or 'sun' in port.description.lower()):
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if tx_number < 0:
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tx_number = port.port_id.id
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elif rx_number < 0:
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rx_number = port.port_id.id
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if ('eth1' in port.name):
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tx_number = port.port_id.id
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if ('eth2' in port.name):
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rx_number = port.port_id.id
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assert tx_number >= 0
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assert rx_number >= 0
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print('Using port %d as tx port(s)' % tx_number)
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print('Using port %d as rx port(s)' % rx_number)
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ports.tx = ost_pb.PortIdList()
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ports.tx.port_id.add().id = tx_number;
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ports.rx = ost_pb.PortIdList()
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ports.rx.port_id.add().id = rx_number;
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return ports
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@pytest.fixture(scope='module')
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def dut(request):
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# Enable IP forwarding on the DUT (aka make it a router)
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sudo('sysctl -w net.ipv4.ip_forward=1')
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@pytest.fixture(scope='module')
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def dut_ports(request):
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dut_ports.rx = 'eth1'
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dut_ports.tx = 'eth2'
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# delete all configuration on the DUT interfaces
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sudo('ip address flush dev ' + dut_ports.rx)
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sudo('ip address flush dev ' + dut_ports.tx)
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return dut_ports
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@pytest.fixture(scope='module')
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def emul_ports(request, drone, ports):
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emul_ports = ost_pb.PortIdList()
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emul_ports.port_id.add().id = ports.tx.port_id[0].id;
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emul_ports.port_id.add().id = ports.rx.port_id[0].id;
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return emul_ports
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@pytest.fixture(scope='module')
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def dgid_list(request, drone, ports):
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# ----------------------------------------------------------------- #
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# create emulated device(s) on tx/rx ports - each test case will
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# modify and reuse these devices as per its needs
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# ----------------------------------------------------------------- #
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# delete existing devices, if any, on tx port
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dgid_list.tx = drone.getDeviceGroupIdList(ports.tx.port_id[0])
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drone.deleteDeviceGroup(dgid_list.tx)
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# add a emulated device group on tx port
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dgid_list.tx = ost_pb.DeviceGroupIdList()
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dgid_list.tx.port_id.CopyFrom(ports.tx.port_id[0])
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dgid_list.tx.device_group_id.add().id = 1
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log.info('adding tx device_group %d' % dgid_list.tx.device_group_id[0].id)
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drone.addDeviceGroup(dgid_list.tx)
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# delete existing devices, if any, on rx port
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dgid_list.rx = drone.getDeviceGroupIdList(ports.rx.port_id[0])
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drone.deleteDeviceGroup(dgid_list.rx)
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# add a emulated device group on rx port
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dgid_list.rx = ost_pb.DeviceGroupIdList()
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dgid_list.rx.port_id.CopyFrom(ports.rx.port_id[0])
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dgid_list.rx.device_group_id.add().id = 1
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log.info('adding rx device_group %d' % dgid_list.rx.device_group_id[0].id)
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drone.addDeviceGroup(dgid_list.rx)
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def fin():
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dgid_list = drone.getDeviceGroupIdList(ports.tx.port_id[0])
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drone.deleteDeviceGroup(dgid_list)
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dgid_list = drone.getDeviceGroupIdList(ports.rx.port_id[0])
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drone.deleteDeviceGroup(dgid_list)
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request.addfinalizer(fin)
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return dgid_list
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@pytest.fixture(scope='module')
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def stream_id(request, drone, ports):
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# ----------------------------------------------------------------- #
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# create stream on tx port - each test case will modify and reuse
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# this stream as per its needs
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# ----------------------------------------------------------------- #
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# delete existing streams, if any, on tx port
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sid_list = drone.getStreamIdList(ports.tx.port_id[0])
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drone.deleteStream(sid_list)
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# add a stream
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stream_id = ost_pb.StreamIdList()
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stream_id.port_id.CopyFrom(ports.tx.port_id[0])
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stream_id.stream_id.add().id = 1
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log.info('adding tx_stream %d' % stream_id.stream_id[0].id)
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drone.addStream(stream_id)
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def fin():
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drone.deleteStream(stream_id)
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request.addfinalizer(fin)
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return stream_id
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@pytest.fixture
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def dut_vlans(request, dut_ports):
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class Devices(object):
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pass
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def create_vdev(devices, vlancfgs):
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# device(s) with ALL vlan tags are what we configure and add to netns;
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# those with intermediate no of vlans are created but not configured
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if len(vlancfgs) == 0:
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assert len(devices.rx) == len(devices.tx)
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dut_vlans.vlans = []
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for i in range(len(devices.rx)):
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vrf = 'vrf' + str(i+1)
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sudo('ip netns add ' + vrf)
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dev = devices.rx[i]
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sudo('ip link set ' + dev
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+ ' netns ' + vrf)
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sudo('ip netns exec ' + vrf
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+ ' ip addr add 10.1.1.1/24'
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+ ' dev ' + dev)
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sudo('ip netns exec ' + vrf
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+ ' ip link set ' + dev + ' up')
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dev = devices.tx[i]
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sudo('ip link set ' + dev
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+ ' netns ' + vrf)
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sudo('ip netns exec ' + vrf
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+ ' ip addr add 10.1.2.1/24'
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+ ' dev ' + dev)
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sudo('ip netns exec ' + vrf
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+ ' ip link set ' + dev + ' up')
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dut_vlans.vlans.append(dev[dev.find('.')+1:])
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return dut_vlans.vlans
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vcfg = vlancfgs[0]
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new_devs = Devices()
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new_devs.tx = []
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new_devs.rx = []
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for dev in devices.rx+devices.tx:
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for k in range(vcfg['count']):
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vlan_id = vcfg['base'] + k*vcfg.get('step', 1)
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if 'tpid' in vcfg and vcfg['tpid'] == 0x88a8:
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tpid = '802.1ad'
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else:
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tpid = '802.1q'
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dev_name = dev + '.' + str(vlan_id)
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sudo('ip link add link ' + dev
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+ ' name ' + dev_name
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+ ' type vlan id ' + str(vlan_id)
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+ ' proto ' + tpid)
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sudo('ip link set ' + dev_name + ' up')
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if dev in devices.rx:
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new_devs.rx.append(dev_name)
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else:
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new_devs.tx.append(dev_name)
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print (str(len(devices.rx)*2*vcfg['count'])+' devices created')
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create_vdev(new_devs, vlancfgs[1:])
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def delete_vdev():
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if len(vlancfgs) == 0:
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return
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vrf_count = 1
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for vcfg in vlancfgs:
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vrf_count = vrf_count * vcfg['count']
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# deleting netns will also delete the devices inside it
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for i in range(vrf_count):
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vrf = 'vrf' + str(i+1)
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sudo('ip netns delete ' + vrf)
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# if we have only single tagged vlans, then we are done
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if len(vlancfgs) == 1:
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return
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# if we have 2 or more stacked vlan tags, we need to delete the
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# intermediate stacked vlan devices which are in the root namespace;
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# deleting first level tag vlan devices will delete vlan devices
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# stacked on top of it also
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vcfg = vlancfgs[0]
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for dev in devices.tx+devices.rx:
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for k in range(vcfg['count']):
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vdev = dev + '.' + str(vcfg['base']+k)
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sudo('ip link delete ' + vdev)
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vlancfgs = getattr(request.function, 'vlan_cfg')
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devices = Devices()
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devices.tx = [dut_ports.tx]
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devices.rx = [dut_ports.rx]
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create_vdev(devices, vlancfgs)
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request.addfinalizer(delete_vdev)
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# ================================================================= #
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# ----------------------------------------------------------------- #
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# TEST CASES
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# ----------------------------------------------------------------- #
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# ================================================================= #
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@pytest.mark.parametrize('dev_cfg', [
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{'mac_step': 1, 'ip_step': 1},
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{'mac_step': 2, 'ip_step': 5},
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])
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def test_multiEmulDevNoVlan(drone, ports, dut, dut_ports, stream_id,
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emul_ports, dgid_list, dev_cfg):
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# ----------------------------------------------------------------- #
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# TESTCASE: Emulate multiple IPv4 devices (no vlans)
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# DUT
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# /.1 \.1
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# / \
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# 10.10.1/24 10.10.2/24
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# / \
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# /.101-105 \.101-105
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# Host1(s) Host2(s)
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# ----------------------------------------------------------------- #
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num_devs = 5
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mac_step = dev_cfg['mac_step']
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ip_step = dev_cfg['ip_step']
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# configure the DUT
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sudo('ip address add 10.10.1.1/24 dev ' + dut_ports.rx)
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sudo('ip address add 10.10.2.1/24 dev ' + dut_ports.tx)
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# configure the tx device(s)
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devgrp_cfg = ost_pb.DeviceGroupConfigList()
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devgrp_cfg.port_id.CopyFrom(ports.tx.port_id[0])
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dg = devgrp_cfg.device_group.add()
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dg.device_group_id.id = dgid_list.tx.device_group_id[0].id
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dg.core.name = "Host1"
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dg.device_count = num_devs
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dg.Extensions[emul.mac].address = 0x000102030a01
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if (mac_step != 1):
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dg.Extensions[emul.mac].step = mac_step
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ip = dg.Extensions[emul.ip4]
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ip.address = 0x0a0a0165
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ip.prefix_length = 24
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if (ip_step != 1):
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ip.step = ip_step
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ip.default_gateway = 0x0a0a0101
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drone.modifyDeviceGroup(devgrp_cfg)
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# configure the rx device(s)
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devgrp_cfg = ost_pb.DeviceGroupConfigList()
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devgrp_cfg.port_id.CopyFrom(ports.rx.port_id[0])
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dg = devgrp_cfg.device_group.add()
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dg.device_group_id.id = dgid_list.rx.device_group_id[0].id
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dg.core.name = "Host1"
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dg.device_count = num_devs
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dg.Extensions[emul.mac].address = 0x000102030b01
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if (mac_step != 1):
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dg.Extensions[emul.mac].step = mac_step
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ip = dg.Extensions[emul.ip4]
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ip.address = 0x0a0a0265
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ip.prefix_length = 24
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if (ip_step != 1):
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ip.step = ip_step
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ip.default_gateway = 0x0a0a0201
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drone.modifyDeviceGroup(devgrp_cfg)
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# configure the tx stream
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stream_cfg = ost_pb.StreamConfigList()
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stream_cfg.port_id.CopyFrom(ports.tx.port_id[0])
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s = stream_cfg.stream.add()
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s.stream_id.id = stream_id.stream_id[0].id
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s.core.is_enabled = True
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s.control.packets_per_sec = 100
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s.control.num_packets = 10
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# setup stream protocols as mac:eth2:ip4:udp:payload
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p = s.protocol.add()
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p.protocol_id.id = ost_pb.Protocol.kMacFieldNumber
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p.Extensions[mac].dst_mac_mode = Mac.e_mm_resolve
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p.Extensions[mac].src_mac_mode = Mac.e_mm_resolve
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p = s.protocol.add()
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p.protocol_id.id = ost_pb.Protocol.kEth2FieldNumber
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p = s.protocol.add()
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p.protocol_id.id = ost_pb.Protocol.kIp4FieldNumber
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ip = p.Extensions[ip4]
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ip.src_ip = 0x0a0a0165
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if ip_step == 1:
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ip.src_ip_mode = Ip4.e_im_inc_host
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ip.src_ip_count = num_devs
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else:
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vf = p.variable_field.add()
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vf.type = ost_pb.VariableField.kCounter32
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vf.offset = 12
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vf.mask = 0x000000FF
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vf.value = 0x00000065
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vf.step = ip_step
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vf.mode = ost_pb.VariableField.kIncrement
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vf.count = num_devs
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ip.dst_ip = 0x0a0a0265
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if ip_step == 1:
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ip.dst_ip_mode = Ip4.e_im_inc_host
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ip.dst_ip_count = num_devs
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else:
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vf = p.variable_field.add()
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vf.type = ost_pb.VariableField.kCounter32
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vf.offset = 16
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vf.mask = 0x000000FF
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vf.value = 0x00000065
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vf.step = ip_step
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vf.mode = ost_pb.VariableField.kIncrement
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vf.count = num_devs
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s.protocol.add().protocol_id.id = ost_pb.Protocol.kUdpFieldNumber
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s.protocol.add().protocol_id.id = ost_pb.Protocol.kPayloadFieldNumber
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log.info('configuring tx_stream %d' % stream_id.stream_id[0].id)
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drone.modifyStream(stream_cfg)
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# FIXME(needed?): clear tx/rx stats
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log.info('clearing tx/rx stats')
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drone.clearStats(ports.tx)
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drone.clearStats(ports.rx)
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# clear arp on DUT
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sudo('ip neigh flush all')
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arp_cache = run('ip neigh show')
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assert re.search('10.10.[1-2].1\d\d.*lladdr', arp_cache) == None
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# resolve ARP on tx/rx ports
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log.info('resolving Neighbors on tx/rx ports ...')
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drone.startCapture(emul_ports)
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drone.clearDeviceNeighbors(emul_ports)
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drone.resolveDeviceNeighbors(emul_ports)
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time.sleep(3)
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drone.stopCapture(emul_ports)
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# verify ARP Requests sent out from tx port
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buff = drone.getCaptureBuffer(emul_ports.port_id[0])
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drone.saveCaptureBuffer(buff, 'capture.pcap')
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log.info('dumping Tx capture buffer (all)')
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cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap'])
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print(cap_pkts)
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log.info('dumping Tx capture buffer (filtered)')
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for i in range(num_devs):
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cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
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'-R', '(arp.opcode == 1)'
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' && (arp.src.proto_ipv4 == 10.10.1.'
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+str(101+i*ip_step)+')'
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' && (arp.dst.proto_ipv4 == 10.10.1.1)'])
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|
print(cap_pkts)
|
|
assert cap_pkts.count('\n') == 1
|
|
|
|
# verify *no* ARP Requests sent out from rx port
|
|
buff = drone.getCaptureBuffer(emul_ports.port_id[1])
|
|
drone.saveCaptureBuffer(buff, 'capture.pcap')
|
|
log.info('dumping Rx capture buffer (all)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap'])
|
|
print(cap_pkts)
|
|
log.info('dumping Rx capture buffer (filtered)')
|
|
for i in range(num_devs):
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-R', '(arp.opcode == 1)'
|
|
' && (arp.src.proto_ipv4 == 10.10.2.'
|
|
+str(101+i*ip_step)+')'
|
|
' && (arp.dst.proto_ipv4 == 10.10.2.1)'])
|
|
print(cap_pkts)
|
|
assert cap_pkts.count('\n') == 0
|
|
|
|
# retrieve and verify ARP Table on tx/rx ports
|
|
log.info('retrieving ARP entries on tx port')
|
|
device_list = drone.getDeviceList(emul_ports.port_id[0])
|
|
device_config = device_list.Extensions[emul.port_device]
|
|
neigh_list = drone.getDeviceNeighbors(emul_ports.port_id[0])
|
|
devices = neigh_list.Extensions[emul.devices]
|
|
log.info('ARP Table on tx port')
|
|
for dev_cfg, device in zip(device_config, devices):
|
|
resolved = False
|
|
for arp in device.arp:
|
|
# TODO: pretty print ip and mac
|
|
print('%08x: %08x %012x' %
|
|
(dev_cfg.ip4, arp.ip4, arp.mac))
|
|
if (arp.ip4 == dev_cfg.ip4_default_gateway) and (arp.mac):
|
|
resolved = True
|
|
assert resolved
|
|
|
|
log.info('retrieving ARP entries on rx port')
|
|
device_list = drone.getDeviceList(emul_ports.port_id[0])
|
|
device_config = device_list.Extensions[emul.port_device]
|
|
neigh_list = drone.getDeviceNeighbors(emul_ports.port_id[1])
|
|
devices = neigh_list.Extensions[emul.devices]
|
|
log.info('ARP Table on rx port')
|
|
for dev_cfg, device in zip(device_config, devices):
|
|
# verify *no* ARPs learnt on rx port
|
|
assert len(device.arp) == 0
|
|
for arp in device.arp:
|
|
# TODO: pretty print ip and mac
|
|
print('%08x: %08x %012x' %
|
|
(dev_cfg.ip4, arp.ip4, arp.mac))
|
|
|
|
# We are all set now - so transmit the stream now
|
|
drone.startCapture(ports.rx)
|
|
drone.startTransmit(ports.tx)
|
|
log.info('waiting for transmit to finish ...')
|
|
time.sleep(3)
|
|
drone.stopTransmit(ports.tx)
|
|
drone.stopCapture(ports.rx)
|
|
|
|
buff = drone.getCaptureBuffer(ports.rx.port_id[0])
|
|
drone.saveCaptureBuffer(buff, 'capture.pcap')
|
|
log.info('dumping Rx capture buffer (all)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap'])
|
|
print(cap_pkts)
|
|
log.info('dumping Rx capture buffer (filtered)')
|
|
for i in range(num_devs):
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-R', '(ip.src == 10.10.1.' + str(101+i*ip_step) + ') '
|
|
' && (ip.dst == 10.10.2.' + str(101+i*ip_step) + ')'
|
|
' && (eth.dst == 00:01:02:03:0b:'
|
|
+ format(1+i*mac_step, '02x')+')'])
|
|
print(cap_pkts)
|
|
assert cap_pkts.count('\n') == s.control.num_packets/num_devs
|
|
os.remove('capture.pcap')
|
|
|
|
drone.stopTransmit(ports.tx)
|
|
run('ip neigh show')
|
|
|
|
# unconfigure DUT
|
|
sudo('ip address delete 10.10.1.1/24 dev ' + dut_ports.rx)
|
|
sudo('ip address delete 10.10.2.1/24 dev ' + dut_ports.tx)
|
|
|
|
@pytest.mark.parametrize('vlan_cfg', [
|
|
[{'base': 11, 'count': 5}],
|
|
|
|
[{'base': 11, 'count': 2},
|
|
{'base': 21, 'count': 3}],
|
|
|
|
[{'base': 11, 'count': 2, 'tpid': 0x88a8},
|
|
{'base': 21, 'count': 3}],
|
|
|
|
[{'base': 11, 'count': 2},
|
|
{'base': 21, 'count': 3, 'step': 2},
|
|
{'base': 31, 'count': 2, 'step': 3}],
|
|
|
|
[{'base': 11, 'count': 2},
|
|
{'base': 21, 'count': 3},
|
|
{'base': 31, 'count': 2},
|
|
{'base': 1, 'count': 3}],
|
|
])
|
|
def test_multiEmulDevPerVlan(request, drone, ports, dut, dut_ports, stream_id,
|
|
emul_ports, dgid_list, vlan_cfg):
|
|
# ----------------------------------------------------------------- #
|
|
# TESTCASE: Emulate multiple IPv4 device per multiple single-tag VLANs
|
|
#
|
|
# +- DUT -+
|
|
# .1/ \.1
|
|
# / \
|
|
# 10.1.1/24 10.1.2/24
|
|
# [vlans] [vlans]
|
|
# / \
|
|
# /.101-103 \.101-103
|
|
# Host1(s) Host2(s)
|
|
# ----------------------------------------------------------------- #
|
|
|
|
num_vlans = 1
|
|
for vcfg in vlan_cfg:
|
|
num_vlans = num_vlans * vcfg['count']
|
|
test_multiEmulDevPerVlan.vlan_cfg = vlan_cfg
|
|
num_devs_per_vlan = 3
|
|
tx_ip_base = 0x0a010165
|
|
rx_ip_base = 0x0a010265
|
|
|
|
# configure vlans on the DUT
|
|
dut_vlans(request, dut_ports)
|
|
|
|
assert len(dut_vlans.vlans) == num_vlans
|
|
vlan_filter = []
|
|
for i in range(len(dut_vlans.vlans)):
|
|
vlan_filter.append('')
|
|
ids = dut_vlans.vlans[i].split('.')
|
|
for j in range(len(ids)):
|
|
filter = '(frame[<ofs>:4]==<tpid>:<id>)' \
|
|
.replace('<ofs>', str(12+j*4)) \
|
|
.replace('<tpid>', '{:04x}'.format(
|
|
vlan_cfg[j].get('tpid', 0x8100))) \
|
|
.replace('<id>', '{:04x}'.format(int(ids[j])))
|
|
if len(vlan_filter[i]) > 0:
|
|
vlan_filter[i] += ' && '
|
|
vlan_filter[i] += filter
|
|
print i, vlan_filter[i]
|
|
|
|
# configure the tx device(s)
|
|
devgrp_cfg = ost_pb.DeviceGroupConfigList()
|
|
devgrp_cfg.port_id.CopyFrom(ports.tx.port_id[0])
|
|
dg = devgrp_cfg.device_group.add()
|
|
dg.device_group_id.id = dgid_list.tx.device_group_id[0].id
|
|
dg.core.name = "Host1"
|
|
for vcfg in vlan_cfg:
|
|
v = dg.encap.Extensions[emul.vlan].stack.add()
|
|
v.vlan_tag = vcfg['base']
|
|
v.count = vcfg['count']
|
|
if 'tpid' in vcfg:
|
|
v.tpid = vcfg['tpid']
|
|
if 'step' in vcfg:
|
|
v.step = vcfg['step']
|
|
dg.device_count = num_devs_per_vlan
|
|
dg.Extensions[emul.mac].address = 0x000102030a01
|
|
ip = dg.Extensions[emul.ip4]
|
|
ip.address = tx_ip_base
|
|
ip.prefix_length = 24
|
|
ip.default_gateway = (tx_ip_base & 0xffffff00) | 0x01
|
|
|
|
drone.modifyDeviceGroup(devgrp_cfg)
|
|
|
|
# configure the rx device(s)
|
|
devgrp_cfg = ost_pb.DeviceGroupConfigList()
|
|
devgrp_cfg.port_id.CopyFrom(ports.rx.port_id[0])
|
|
dg = devgrp_cfg.device_group.add()
|
|
dg.device_group_id.id = dgid_list.rx.device_group_id[0].id
|
|
dg.core.name = "Host1"
|
|
for vcfg in vlan_cfg:
|
|
v = dg.encap.Extensions[emul.vlan].stack.add()
|
|
v.vlan_tag = vcfg['base']
|
|
v.count = vcfg['count']
|
|
if 'tpid' in vcfg:
|
|
v.tpid = vcfg['tpid']
|
|
if 'step' in vcfg:
|
|
v.step = vcfg['step']
|
|
dg.device_count = num_devs_per_vlan
|
|
dg.Extensions[emul.mac].address = 0x000102030b01
|
|
ip = dg.Extensions[emul.ip4]
|
|
ip.address = rx_ip_base
|
|
ip.prefix_length = 24
|
|
ip.default_gateway = (rx_ip_base & 0xffffff00) | 0x01
|
|
|
|
drone.modifyDeviceGroup(devgrp_cfg)
|
|
|
|
# configure the tx stream(s)
|
|
# we need more than one stream, so delete old one
|
|
# and create as many as we need
|
|
# FIXME: restore the single stream at end?
|
|
log.info('deleting tx_stream %d' % stream_id.stream_id[0].id)
|
|
drone.deleteStream(stream_id)
|
|
|
|
stream_id = ost_pb.StreamIdList()
|
|
stream_id.port_id.CopyFrom(ports.tx.port_id[0])
|
|
for i in range(num_vlans):
|
|
stream_id.stream_id.add().id = i
|
|
log.info('adding tx_stream %d' % stream_id.stream_id[i].id)
|
|
|
|
drone.addStream(stream_id)
|
|
|
|
stream_cfg = ost_pb.StreamConfigList()
|
|
stream_cfg.port_id.CopyFrom(ports.tx.port_id[0])
|
|
for i in range(num_vlans):
|
|
s = stream_cfg.stream.add()
|
|
s.stream_id.id = stream_id.stream_id[i].id
|
|
s.core.name = 'stream ' + str(s.stream_id.id)
|
|
s.core.is_enabled = True
|
|
s.core.ordinal = i
|
|
s.control.packets_per_sec = 100
|
|
s.control.num_packets = num_devs_per_vlan
|
|
|
|
# setup stream protocols as mac:vlan:eth2:ip4:udp:payload
|
|
p = s.protocol.add()
|
|
p.protocol_id.id = ost_pb.Protocol.kMacFieldNumber
|
|
p.Extensions[mac].dst_mac_mode = Mac.e_mm_resolve
|
|
p.Extensions[mac].src_mac_mode = Mac.e_mm_resolve
|
|
|
|
ids = dut_vlans.vlans[i].split('.')
|
|
for id, j in zip(ids, range(len(ids))):
|
|
p = s.protocol.add()
|
|
p.protocol_id.id = ost_pb.Protocol.kVlanFieldNumber
|
|
p.Extensions[vlan].vlan_tag = int(id)
|
|
if 'tpid' in vlan_cfg[j]:
|
|
p.Extensions[vlan].tpid = vlan_cfg[j]['tpid']
|
|
p.Extensions[vlan].is_override_tpid = True
|
|
|
|
p = s.protocol.add()
|
|
p.protocol_id.id = ost_pb.Protocol.kEth2FieldNumber
|
|
|
|
p = s.protocol.add()
|
|
p.protocol_id.id = ost_pb.Protocol.kIp4FieldNumber
|
|
ip = p.Extensions[ip4]
|
|
ip.src_ip = tx_ip_base
|
|
ip.src_ip_mode = Ip4.e_im_inc_host
|
|
ip.src_ip_count = num_devs_per_vlan
|
|
ip.dst_ip = rx_ip_base
|
|
ip.dst_ip_mode = Ip4.e_im_inc_host
|
|
ip.dst_ip_count = num_devs_per_vlan
|
|
|
|
p = s.protocol.add()
|
|
p.protocol_id.id = ost_pb.Protocol.kUdpFieldNumber
|
|
p = s.protocol.add()
|
|
p.protocol_id.id = ost_pb.Protocol.kPayloadFieldNumber
|
|
|
|
log.info('configuring tx_stream %d' % stream_id.stream_id[i].id)
|
|
|
|
drone.modifyStream(stream_cfg)
|
|
|
|
# clear arp on DUT
|
|
for i in range(num_vlans):
|
|
vrf = 'vrf' + str(i+1)
|
|
|
|
sudo('ip netns exec ' + vrf
|
|
+ ' ip neigh flush all')
|
|
arp_cache = sudo('ip netns exec ' + vrf
|
|
+ ' ip neigh show')
|
|
assert re.search('10.1.[1-2].20[1-5].*lladdr', arp_cache) == None
|
|
|
|
# resolve ARP on tx/rx ports
|
|
log.info('resolving Neighbors on tx/rx ports ...')
|
|
drone.startCapture(emul_ports)
|
|
drone.clearDeviceNeighbors(emul_ports)
|
|
drone.resolveDeviceNeighbors(emul_ports)
|
|
time.sleep(3)
|
|
drone.stopCapture(emul_ports)
|
|
|
|
# verify ARP Requests sent out from tx port
|
|
buff = drone.getCaptureBuffer(emul_ports.port_id[0])
|
|
drone.saveCaptureBuffer(buff, 'capture.pcap')
|
|
log.info('dumping Tx capture buffer (all)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap'])
|
|
print(cap_pkts)
|
|
log.info('dumping Tx capture buffer (all pkts - vlans only)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-Tfields', '-eframe.number', '-eieee8021ad.id', '-evlan.id'])
|
|
print(cap_pkts)
|
|
log.info('dumping Tx capture buffer (filtered)')
|
|
for i in range(num_vlans):
|
|
for j in range(num_devs_per_vlan):
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-R', vlan_filter[i] +
|
|
' && (arp.opcode == 1)'
|
|
' && (arp.src.proto_ipv4 == 10.1.1.'
|
|
+str(101+j)+')'
|
|
' && (arp.dst.proto_ipv4 == 10.1.1.1)'])
|
|
print(cap_pkts)
|
|
assert cap_pkts.count('\n') == 1
|
|
|
|
# verify *no* ARP Requests sent out from rx port
|
|
buff = drone.getCaptureBuffer(emul_ports.port_id[1])
|
|
drone.saveCaptureBuffer(buff, 'capture.pcap')
|
|
log.info('dumping Rx capture buffer (all)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap'])
|
|
print(cap_pkts)
|
|
log.info('dumping Rx capture buffer (all pkts - vlans only)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-Tfields', '-eframe.number', '-eieee8021ad.id', '-evlan.id'])
|
|
print(cap_pkts)
|
|
log.info('dumping Rx capture buffer (filtered)')
|
|
for i in range(num_vlans):
|
|
for j in range(num_devs_per_vlan):
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-R', vlan_filter[i] +
|
|
' && (arp.opcode == 1)'
|
|
' && (arp.src.proto_ipv4 == 10.1.2.'
|
|
+str(101+j)+')'
|
|
' && (arp.dst.proto_ipv4 == 10.1.2.1)'])
|
|
print(cap_pkts)
|
|
assert cap_pkts.count('\n') == 0
|
|
|
|
# retrieve and verify ARP Table on tx/rx ports
|
|
log.info('retrieving ARP entries on tx port')
|
|
device_list = drone.getDeviceList(emul_ports.port_id[0])
|
|
device_config = device_list.Extensions[emul.port_device]
|
|
neigh_list = drone.getDeviceNeighbors(emul_ports.port_id[0])
|
|
devices = neigh_list.Extensions[emul.devices]
|
|
log.info('ARP Table on tx port')
|
|
for dev_cfg, device in zip(device_config, devices):
|
|
resolved = False
|
|
for arp in device.arp:
|
|
# TODO: print all configured vlans, not just the first
|
|
# TODO: pretty print ip and mac
|
|
print('v%d|%08x: %08x %012x' %
|
|
(dev_cfg.vlan[0] & 0xffff, dev_cfg.ip4, arp.ip4, arp.mac))
|
|
if (arp.ip4 == dev_cfg.ip4_default_gateway) and (arp.mac):
|
|
resolved = True
|
|
assert resolved
|
|
|
|
log.info('retrieving ARP entries on rx port')
|
|
device_list = drone.getDeviceList(emul_ports.port_id[0])
|
|
device_config = device_list.Extensions[emul.port_device]
|
|
neigh_list = drone.getDeviceNeighbors(emul_ports.port_id[1])
|
|
devices = neigh_list.Extensions[emul.devices]
|
|
log.info('ARP Table on rx port')
|
|
for dev_cfg, device in zip(device_config, devices):
|
|
# verify *no* ARPs learnt on rx port
|
|
assert len(device.arp) == 0
|
|
for arp in device.arp:
|
|
# TODO: pretty print ip and mac
|
|
print('v%d|%08x: %08x %012x' %
|
|
(dev_cfg.vlan[0] & 0xffff, dev_cfg.ip4, arp.ip4, arp.mac))
|
|
|
|
drone.startCapture(ports.rx)
|
|
drone.startTransmit(ports.tx)
|
|
log.info('waiting for transmit to finish ...')
|
|
time.sleep(5)
|
|
drone.stopTransmit(ports.tx)
|
|
drone.stopCapture(ports.rx)
|
|
|
|
# verify data packets received on rx port
|
|
buff = drone.getCaptureBuffer(ports.rx.port_id[0])
|
|
drone.saveCaptureBuffer(buff, 'capture.pcap')
|
|
log.info('dumping Rx capture buffer (all)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap'])
|
|
print(cap_pkts)
|
|
log.info('dumping Tx capture buffer (all pkts - vlans only)')
|
|
cap_pkts = subprocess.check_output([tshark, '-nr', 'capture.pcap',
|
|
'-Tfields', '-eframe.number', '-eieee8021ad.id', '-evlan.id'])
|
|
print(cap_pkts)
|
|
log.info('dumping Rx capture buffer (filtered)')
|
|
for i in range(num_vlans):
|
|
for j in range(num_devs_per_vlan):
|
|
cap_pkts = subprocess.check_output(
|
|
[tshark, '-nr', 'capture.pcap',
|
|
'-R', vlan_filter[i] +
|
|
' && (ip.src == 10.1.1.' + str(101+j) + ') '
|
|
' && (ip.dst == 10.1.2.' + str(101+j) + ')'
|
|
' && (eth.dst == 00:01:02:03:0b:'
|
|
+ format(1+j, '02x')+')'])
|
|
print(cap_pkts)
|
|
assert cap_pkts.count('\n') == 1
|
|
os.remove('capture.pcap')
|
|
|
|
# TODO:
|
|
# ----------------------------------------------------------------- #
|
|
# TESTCASE: Emulate one IPv4 device per multiple double-tag VLANs
|
|
# vlanMode: repeat (default)
|
|
# TESTCASE: Emulate multiple IPv4 devices per multiple double-tag VLANs
|
|
# vlanMode: no-repeat; ip4Mode: repeat (default)
|
|
# TESTCASE: Emulate multiple IPv4 devices per multiple quad-tag VLANs
|
|
# vlanMode: repeat (default); ip4Mode: repeat (default)
|
|
# TESTCASE: Emulate multiple IPv4 devices per multiple quad-tag VLANs
|
|
# vlanMode: no-repeat; ip4Mode: no-repeat
|
|
# ----------------------------------------------------------------- #
|
|
|
|
|