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ovs-l3ping: A new test utility that allows to detect L3 tunneling issues

Browse Source 
ovs-l3ping is similar to ovs-test, but the main difference
is that it does not require administrator to open firewall
holes for the XML/RPC control connection. This is achieved
by encapsulating the Control Connection over the L3 tunnel
itself.

This tool is not intended as a replacement for ovs-test,
because ovs-test covers much broader set of test cases.

Sample usage:
Node1: ovs-l3ping -s 192.168.122.236,10.1.1.1 -t gre
Node2: ovs-l3ping -c 192.168.122.220,10.1.1.2,10.1.1.1 -t gre

Issue#11791
Signed-off-by: Ansis Atteka <aatteka@nicira.com>
This commit is contained in:
Ansis Atteka
2012-06-28 15:52:40 -07:00
parent 969e46a224
commit 2d8bdd8f22
16 changed files with 635 additions and 277 deletions
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237
python/ovstest/tests.py Normal file
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import math
import time
import ovstest.util as util
DEFAULT_TEST_BRIDGE = "ovstestbr0"
DEFAULT_TEST_PORT = "ovstestport0"
DEFAULT_TEST_TUN = "ovstestport1"
NO_HANDLE = -1
def do_udp_tests(receiver, sender, tbwidth, duration, port_sizes):
"""Schedule UDP tests between receiver and sender"""
server1 = util.rpc_client(receiver[0], receiver[1])
server2 = util.rpc_client(sender[0], sender[1])
udpformat = '{0:>15} {1:>15} {2:>15} {3:>15} {4:>15}'
print ("UDP test from %s:%u to %s:%u with target bandwidth %s" %
(sender[0], sender[1], receiver[0], receiver[1],
util.bandwidth_to_string(tbwidth)))
print udpformat.format("Datagram Size", "Snt Datagrams", "Rcv Datagrams",
"Datagram Loss", "Bandwidth")
for size in port_sizes:
listen_handle = NO_HANDLE
send_handle = NO_HANDLE
try:
packetcnt = (tbwidth * duration) / size
listen_handle = server1.create_udp_listener(receiver[3])
if listen_handle == NO_HANDLE:
print ("Server could not open UDP listening socket on port"
" %u. Try to restart the server.\n" % receiver[3])
return
send_handle = server2.create_udp_sender(
(util.ip_from_cidr(receiver[2]),
receiver[3]), packetcnt, size,
duration)
# Using sleep here because there is no other synchronization
# source that would notify us when all sent packets were received
time.sleep(duration + 1)
rcv_packets = server1.get_udp_listener_results(listen_handle)
snt_packets = server2.get_udp_sender_results(send_handle)
loss = math.ceil(((snt_packets - rcv_packets) * 10000.0) /
snt_packets) / 100
bwidth = (rcv_packets * size) / duration
print udpformat.format(size, snt_packets, rcv_packets,
'%.2f%%' % loss, util.bandwidth_to_string(bwidth))
finally:
if listen_handle != NO_HANDLE:
server1.close_udp_listener(listen_handle)
if send_handle != NO_HANDLE:
server2.close_udp_sender(send_handle)
print "\n"
def do_tcp_tests(receiver, sender, duration):
"""Schedule TCP tests between receiver and sender"""
server1 = util.rpc_client(receiver[0], receiver[1])
server2 = util.rpc_client(sender[0], sender[1])
tcpformat = '{0:>15} {1:>15} {2:>15}'
print "TCP test from %s:%u to %s:%u (full speed)" % (sender[0], sender[1],
receiver[0], receiver[1])
print tcpformat.format("Snt Bytes", "Rcv Bytes", "Bandwidth")
listen_handle = NO_HANDLE
send_handle = NO_HANDLE
try:
listen_handle = server1.create_tcp_listener(receiver[3])
if listen_handle == NO_HANDLE:
print ("Server was unable to open TCP listening socket on port"
" %u. Try to restart the server.\n" % receiver[3])
return
send_handle = server2.create_tcp_sender(util.ip_from_cidr(receiver[2]),
receiver[3], duration)
time.sleep(duration + 1)
rcv_bytes = long(server1.get_tcp_listener_results(listen_handle))
snt_bytes = long(server2.get_tcp_sender_results(send_handle))
bwidth = rcv_bytes / duration
print tcpformat.format(snt_bytes, rcv_bytes,
util.bandwidth_to_string(bwidth))
finally:
if listen_handle != NO_HANDLE:
server1.close_tcp_listener(listen_handle)
if send_handle != NO_HANDLE:
server2.close_tcp_sender(send_handle)
print "\n"
def do_l3_tests(node1, node2, bandwidth, duration, ps, type):
"""
Do L3 tunneling tests. Each node is given as 4 tuple - physical
interface IP, control port, test IP and test port.
"""
server1 = util.rpc_client(node1[0], node1[1])
server2 = util.rpc_client(node2[0], node2[1])
servers_with_bridges = []
try:
server1.create_bridge(DEFAULT_TEST_BRIDGE)
servers_with_bridges.append(server1)
server2.create_bridge(DEFAULT_TEST_BRIDGE)
servers_with_bridges.append(server2)
server1.interface_up(DEFAULT_TEST_BRIDGE)
server2.interface_up(DEFAULT_TEST_BRIDGE)
server1.interface_assign_ip(DEFAULT_TEST_BRIDGE, node1[2], None)
server2.interface_assign_ip(DEFAULT_TEST_BRIDGE, node2[2], None)
server1.add_port_to_bridge(DEFAULT_TEST_BRIDGE, DEFAULT_TEST_TUN)
server2.add_port_to_bridge(DEFAULT_TEST_BRIDGE, DEFAULT_TEST_TUN)
server1.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "type",
None, type)
server2.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "type",
None, type)
server1.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "options",
"remote_ip", node2[0])
server2.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "options",
"remote_ip", node1[0])
do_udp_tests(node1, node2, bandwidth, duration, ps)
do_udp_tests(node2, node1, bandwidth, duration, ps)
do_tcp_tests(node1, node2, duration)
do_tcp_tests(node2, node1, duration)
finally:
for server in servers_with_bridges:
server.del_bridge(DEFAULT_TEST_BRIDGE)
def do_vlan_tests(node1, node2, bandwidth, duration, ps, tag):
"""
Do VLAN tests between node1 and node2. Each node is given
as 4 tuple - physical interface IP, control port, test IP and
test port.
"""
server1 = util.rpc_client(node1[0], node1[1])
server2 = util.rpc_client(node2[0], node2[1])
br_name1 = None
br_name2 = None
servers_with_test_ports = []
try:
interface_node1 = server1.get_interface(node1[0])
interface_node2 = server2.get_interface(node2[0])
if server1.is_ovs_bridge(interface_node1):
br_name1 = interface_node1
else:
br_name1 = DEFAULT_TEST_BRIDGE
server1.create_test_bridge(br_name1, interface_node1)
if server2.is_ovs_bridge(interface_node2):
br_name2 = interface_node2
else:
br_name2 = DEFAULT_TEST_BRIDGE
server2.create_test_bridge(br_name2, interface_node2)
server1.add_port_to_bridge(br_name1, DEFAULT_TEST_PORT)
servers_with_test_ports.append(server1)
server2.add_port_to_bridge(br_name2, DEFAULT_TEST_PORT)
servers_with_test_ports.append(server2)
server1.ovs_vsctl_set("Port", DEFAULT_TEST_PORT, "tag", None, tag)
server2.ovs_vsctl_set("Port", DEFAULT_TEST_PORT, "tag", None, tag)
server1.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "type", None,
"internal")
server2.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "type", None,
"internal")
server1.interface_assign_ip(DEFAULT_TEST_PORT, node1[2], None)
server2.interface_assign_ip(DEFAULT_TEST_PORT, node2[2], None)
server1.interface_up(DEFAULT_TEST_PORT)
server2.interface_up(DEFAULT_TEST_PORT)
do_udp_tests(node1, node2, bandwidth, duration, ps)
do_udp_tests(node2, node1, bandwidth, duration, ps)
do_tcp_tests(node1, node2, duration)
do_tcp_tests(node2, node1, duration)
finally:
for server in servers_with_test_ports:
server.del_port_from_bridge(DEFAULT_TEST_PORT)
if br_name1 == DEFAULT_TEST_BRIDGE:
server1.del_test_bridge(br_name1, interface_node1)
if br_name2 == DEFAULT_TEST_BRIDGE:
server2.del_test_bridge(br_name2, interface_node2)
def do_direct_tests(node1, node2, bandwidth, duration, ps):
"""
Do tests between outer IPs without involving Open vSwitch. Each
node is given as 4 tuple - physical interface IP, control port,
test IP and test port. Direct tests will use physical interface
IP as the test IP address.
"""
n1 = (node1[0], node1[1], node1[0], node1[3])
n2 = (node2[0], node2[1], node2[0], node2[3])
do_udp_tests(n1, n2, bandwidth, duration, ps)
do_udp_tests(n2, n1, bandwidth, duration, ps)
do_tcp_tests(n1, n2, duration)
do_tcp_tests(n2, n1, duration)
def configure_l3(conf, tunnel_mode):
"""
This function creates a temporary test bridge and adds an L3 tunnel.
"""
s = util.start_local_server(conf[1][1])
server = util.rpc_client("127.0.0.1", conf[1][1])
server.create_bridge(DEFAULT_TEST_BRIDGE)
server.add_port_to_bridge(DEFAULT_TEST_BRIDGE, DEFAULT_TEST_PORT)
server.interface_up(DEFAULT_TEST_BRIDGE)
server.interface_assign_ip(DEFAULT_TEST_BRIDGE, conf[1][0],
None)
server.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "type",
None, tunnel_mode)
server.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "options",
"remote_ip", conf[0])
return s