import socket
-from logging import *
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from scapy.layers.l2 import Ether, GRE
from scapy.packet import Raw
+from scapy.data import IP_PROTOS
from framework import VppTestCase
+from util import ppp
""" TestLB is a subclass of VPPTestCase classes.
TestLB class defines Load Balancer test cases for:
- - IP4 to GRE4 encap
- - IP4 to GRE6 encap
- - IP6 to GRE4 encap
- - IP6 to GRE6 encap
+ - IP4 to GRE4 encap on per-port vip case
+ - IP4 to GRE6 encap on per-port vip case
+ - IP6 to GRE4 encap on per-port vip case
+ - IP6 to GRE6 encap on per-port vip case
+ - IP4 to L3DSR encap on vip case
+ - IP4 to L3DSR encap on per-port vip case
+ - IP4 to NAT4 encap on per-port vip case
+ - IP6 to NAT6 encap on per-port vip case
As stated in comments below, GRE has issues with IPv6.
All test cases involving IPv6 are executed, but
super(TestLB, cls).setUpClass()
cls.ass = range(5)
- cls.packets = range(100)
+ cls.packets = range(1)
try:
cls.create_pg_interfaces(range(2))
def tearDown(self):
super(TestLB, self).tearDown()
if not self.vpp_dead:
- info(self.vapi.cli("show lb vip verbose"))
+ self.logger.info(self.vapi.cli("show lb vip verbose"))
def getIPv4Flow(self, id):
return (IP(dst="90.0.%u.%u" % (id / 255, id % 255),
src="40.0.%u.%u" % (id / 255, id % 255)) /
- UDP(sport=10000 + id, dport=20000 + id))
+ UDP(sport=10000 + id, dport=20000))
def getIPv6Flow(self, id):
return (IPv6(dst="2001::%u" % (id), src="fd00:f00d:ffff::%u" % (id)) /
- UDP(sport=10000 + id, dport=20000 + id))
+ UDP(sport=10000 + id, dport=20000))
def generatePackets(self, src_if, isv4):
+ self.reset_packet_infos()
pkts = []
for pktid in self.packets:
- info = self.create_packet_info(src_if.sw_if_index, pktid)
+ info = self.create_packet_info(src_if, self.pg1)
payload = self.info_to_payload(info)
ip = self.getIPv4Flow(pktid) if isv4 else self.getIPv6Flow(pktid)
packet = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) /
self.assertEqual(gre.version, 0)
inner = IPver(str(gre.payload))
payload_info = self.payload_to_info(str(inner[Raw]))
- self.info = self.get_next_packet_info_for_interface2(
- self.pg0.sw_if_index, payload_info.dst, self.info)
+ self.info = self.packet_infos[payload_info.index]
+ self.assertEqual(payload_info.src, self.pg0.sw_if_index)
self.assertEqual(str(inner), str(self.info.data[IPver]))
- def checkCapture(self, gre4, isv4):
- out = self.pg0.get_capture()
- # This check is edited because RA appears in output, maybe disable RA?
- # self.assertEqual(len(out), 0)
- self.assertLess(len(out), 20)
- out = self.pg1.get_capture()
- self.assertEqual(len(out), len(self.packets))
+ def checkCapture(self, encap, isv4):
+ self.pg0.assert_nothing_captured()
+ out = self.pg1.get_capture(len(self.packets))
load = [0] * len(self.ass)
self.info = None
try:
asid = 0
gre = None
- if gre4:
+ if (encap == 'gre4'):
ip = p[IP]
asid = int(ip.dst.split(".")[3])
self.assertEqual(ip.version, 4)
self.assertEqual(ip.dst, "10.0.0.%u" % asid)
self.assertEqual(ip.proto, 47)
self.assertEqual(len(ip.options), 0)
- self.assertGreaterEqual(ip.ttl, 64)
gre = p[GRE]
- else:
+ self.checkInner(gre, isv4)
+ elif (encap == 'gre6'):
ip = p[IPv6]
asid = ip.dst.split(":")
asid = asid[len(asid) - 1]
socket.inet_pton(socket.AF_INET6, "2002::%u" % asid)
)
self.assertEqual(ip.nh, 47)
- self.assertGreaterEqual(ip.hlim, 64)
# self.assertEqual(len(ip.options), 0)
gre = GRE(str(p[IPv6].payload))
- self.checkInner(gre, isv4)
+ self.checkInner(gre, isv4)
+ elif (encap == 'l3dsr'):
+ ip = p[IP]
+ asid = int(ip.dst.split(".")[3])
+ self.assertEqual(ip.version, 4)
+ self.assertEqual(ip.flags, 0)
+ self.assertEqual(ip.dst, "10.0.0.%u" % asid)
+ self.assertEqual(ip.tos, 0x1c)
+ self.assertEqual(len(ip.options), 0)
+ self.assert_ip_checksum_valid(p)
+ if ip.proto == IP_PROTOS.tcp:
+ self.assert_tcp_checksum_valid(p)
+ elif ip.proto == IP_PROTOS.udp:
+ self.assert_udp_checksum_valid(p)
+ elif (encap == 'nat4'):
+ ip = p[IP]
+ asid = int(ip.dst.split(".")[3])
+ self.assertEqual(ip.version, 4)
+ self.assertEqual(ip.flags, 0)
+ self.assertEqual(ip.dst, "10.0.0.%u" % asid)
+ self.assertEqual(ip.proto, 17)
+ self.assertEqual(len(ip.options), 0)
+ udp = p[UDP]
+ self.assertEqual(udp.dport, 3307)
+ elif (encap == 'nat6'):
+ ip = p[IPv6]
+ asid = ip.dst.split(":")
+ asid = asid[len(asid) - 1]
+ asid = 0 if asid == "" else int(asid)
+ self.assertEqual(ip.version, 6)
+ self.assertEqual(ip.tc, 0)
+ self.assertEqual(ip.fl, 0)
+ self.assertEqual(
+ socket.inet_pton(socket.AF_INET6, ip.dst),
+ socket.inet_pton(socket.AF_INET6, "2002::%u" % asid)
+ )
+ self.assertEqual(ip.nh, 17)
+ self.assertGreaterEqual(ip.hlim, 63)
+ udp = UDP(str(p[IPv6].payload))
+ self.assertEqual(udp.dport, 3307)
load[asid] += 1
except:
- error("Unexpected or invalid packet:")
- p.show()
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
- # This is just to roughly check that the balancing algorithm
+ # This is just to 1roughly check that the balancing algorithm
# is not completly biased.
for asid in self.ass:
if load[asid] < len(self.packets) / (len(self.ass) * 2):
- self.log(
+ self.logger.error(
"ASS is not balanced: load[%d] = %d" % (asid, load[asid]))
raise Exception("Load Balancer algorithm is biased")
def test_lb_ip4_gre4(self):
- """ Load Balancer IP4 GRE4 """
+ """ Load Balancer IP4 GRE4 on vip case """
try:
- self.vapi.cli("lb vip 90.0.0.0/8 encap gre4")
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 encap gre4")
for asid in self.ass:
- self.vapi.cli("lb as 90.0.0.0/8 10.0.0.%u" % (asid))
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 10.0.0.%u"
+ % (asid))
self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- self.checkCapture(gre4=True, isv4=True)
+ self.checkCapture(encap='gre4', isv4=True)
finally:
for asid in self.ass:
- self.vapi.cli("lb as 90.0.0.0/8 10.0.0.%u del" % (asid))
- self.vapi.cli("lb vip 90.0.0.0/8 encap gre4 del")
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 encap gre4 del")
+ self.vapi.cli("test lb flowtable flush")
def test_lb_ip6_gre4(self):
- """ Load Balancer IP6 GRE4 """
+ """ Load Balancer IP6 GRE4 on vip case """
try:
- self.vapi.cli("lb vip 2001::/16 encap gre4")
+ self.vapi.cli(
+ "lb vip 2001::/16 encap gre4")
for asid in self.ass:
- self.vapi.cli("lb as 2001::/16 10.0.0.%u" % (asid))
+ self.vapi.cli(
+ "lb as 2001::/16 10.0.0.%u"
+ % (asid))
self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- # Scapy fails parsing GRE over IPv6.
- # This check is therefore disabled for now.
- # One can easily patch layers/inet6.py to fix the issue.
- # self.checkCapture(gre4=True, isv4=False)
+ self.checkCapture(encap='gre4', isv4=False)
finally:
for asid in self.ass:
- self.vapi.cli("lb as 2001::/16 10.0.0.%u del" % (asid))
- self.vapi.cli("lb vip 2001::/16 encap gre4 del")
+ self.vapi.cli(
+ "lb as 2001::/16 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 2001::/16 encap gre4 del")
+ self.vapi.cli("test lb flowtable flush")
def test_lb_ip4_gre6(self):
- """ Load Balancer IP4 GRE6 """
+ """ Load Balancer IP4 GRE6 on vip case """
try:
- self.vapi.cli("lb vip 90.0.0.0/8 encap gre6")
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 encap gre6")
for asid in self.ass:
- self.vapi.cli("lb as 90.0.0.0/8 2002::%u" % (asid))
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 2002::%u"
+ % (asid))
self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- # Scapy fails parsing GRE over IPv6.
- # This check is therefore disabled for now.
- # One can easily patch layers/inet6.py to fix the issue.
- # self.checkCapture(gre4=False, isv4=True)
+ self.checkCapture(encap='gre6', isv4=True)
finally:
for asid in self.ass:
- self.vapi.cli("lb as 90.0.0.0/8 2002::%u" % (asid))
- self.vapi.cli("lb vip 90.0.0.0/8 encap gre6 del")
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 2002::%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 encap gre6 del")
+ self.vapi.cli("test lb flowtable flush")
def test_lb_ip6_gre6(self):
- """ Load Balancer IP6 GRE6 """
+ """ Load Balancer IP6 GRE6 on vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 2001::/16 encap gre6")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 2001::/16 2002::%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.checkCapture(encap='gre6', isv4=False)
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 2001::/16 2002::%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 2001::/16 encap gre6 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip4_gre4_port(self):
+ """ Load Balancer IP4 GRE4 on per-port-vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre4")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.checkCapture(encap='gre4', isv4=True)
+
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre4 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip6_gre4_port(self):
+ """ Load Balancer IP6 GRE4 on per-port-vip case """
+
+ try:
+ self.vapi.cli(
+ "lb vip 2001::/16 protocol udp port 20000 encap gre4")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 2001::/16 protocol udp port 20000 10.0.0.%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.checkCapture(encap='gre4', isv4=False)
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 2001::/16 protocol udp port 20000 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 2001::/16 protocol udp port 20000 encap gre4 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip4_gre6_port(self):
+ """ Load Balancer IP4 GRE6 on per-port-vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre6")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 2002::%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.checkCapture(encap='gre6', isv4=True)
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 2002::%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap gre6 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip6_gre6_port(self):
+ """ Load Balancer IP6 GRE6 on per-port-vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 2001::/16 protocol udp port 20000 encap gre6")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 2001::/16 protocol udp port 20000 2002::%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.checkCapture(encap='gre6', isv4=False)
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 2001::/16 protocol udp port 20000 2002::%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 2001::/16 protocol udp port 20000 encap gre6 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip4_l3dsr(self):
+ """ Load Balancer IP4 L3DSR on vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 encap l3dsr dscp 7")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 10.0.0.%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.checkCapture(encap='l3dsr', isv4=True)
+
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 encap l3dsr"
+ " dscp 7 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip4_l3dsr_port(self):
+ """ Load Balancer IP4 L3DSR on per-port-vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr dscp 7")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.checkCapture(encap='l3dsr', isv4=True)
+
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap l3dsr"
+ " dscp 7 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip4_nat4_port(self):
+ """ Load Balancer IP4 NAT4 on per-port-vip case """
+ try:
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap nat4"
+ " type clusterip target_port 3307")
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u"
+ % (asid))
+
+ self.pg0.add_stream(self.generatePackets(self.pg0, isv4=True))
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.checkCapture(encap='nat4', isv4=True)
+
+ finally:
+ for asid in self.ass:
+ self.vapi.cli(
+ "lb as 90.0.0.0/8 protocol udp port 20000 10.0.0.%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 90.0.0.0/8 protocol udp port 20000 encap nat4"
+ " type clusterip target_port 3307 del")
+ self.vapi.cli("test lb flowtable flush")
+
+ def test_lb_ip6_nat6_port(self):
+ """ Load Balancer IP6 NAT6 on per-port-vip case """
try:
- self.vapi.cli("lb vip 2001::/16 encap gre6")
+ self.vapi.cli(
+ "lb vip 2001::/16 protocol udp port 20000 encap nat6"
+ " type clusterip target_port 3307")
for asid in self.ass:
- self.vapi.cli("lb as 2001::/16 2002::%u" % (asid))
+ self.vapi.cli(
+ "lb as 2001::/16 protocol udp port 20000 2002::%u"
+ % (asid))
self.pg0.add_stream(self.generatePackets(self.pg0, isv4=False))
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
+ self.checkCapture(encap='nat6', isv4=False)
- # Scapy fails parsing GRE over IPv6.
- # This check is therefore disabled for now.
- # One can easily patch layers/inet6.py to fix the issue.
- # self.checkCapture(gre4=False, isv4=False)
finally:
for asid in self.ass:
- self.vapi.cli("lb as 2001::/16 2002::%u del" % (asid))
- self.vapi.cli("lb vip 2001::/16 encap gre6 del")
+ self.vapi.cli(
+ "lb as 2001::/16 protocol udp port 20000 2002::%u del"
+ % (asid))
+ self.vapi.cli(
+ "lb vip 2001::/16 protocol udp port 20000 encap nat6"
+ " type clusterip target_port 3307 del")
+ self.vapi.cli("test lb flowtable flush")
Code Review / vpp.git / blobdiff