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#!/usr/bin/env python3
import unittest
import scapy.compat
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from framework import VppTestCase, VppTestRunner
class TestPgTun(VppTestCase):
""" PG Test Case """
def setUp(self):
super(TestPgTun, self).setUp()
# create 3 pg interfaces - one each ethernet, ip4-tun, ip6-tun.
self.create_pg_interfaces(range(0, 1))
self.pg_interfaces += self.create_pg_ip4_interfaces(range(1, 2))
self.pg_interfaces += self.create_pg_ip6_interfaces(range(2, 3))
for i in self.pg_interfaces:
i.admin_up()
for i in [self.pg0, self.pg1]:
i.config_ip4()
for i in [self.pg0, self.pg2]:
i.config_ip6()
self.pg0.resolve_arp()
self.pg0.resolve_ndp()
def tearDown(self):
for i in self.pg_interfaces:
i.unconfig_ip4()
i.admin_down()
super(TestPgTun, self).tearDown()
def test_pg_tun(self):
""" IP[46] Tunnel Mode PG """
#
# test that we can send and receive IP encap'd packets on the
# tun interfaces
#
N_PKTS = 31
# v4 tun to ethernet
p = (IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('0' * 48))
rxs = self.send_and_expect(self.pg1, p * N_PKTS, self.pg0)
for rx in rxs:
self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
# v6 tun to ethernet
p = (IPv6(src=self.pg2.remote_ip6, dst=self.pg0.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('0' * 48))
rxs = self.send_and_expect(self.pg2, p * N_PKTS, self.pg0)
for rx in rxs:
self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
# eth to v4 tun
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('0' * 48))
rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1)
for rx in rxs:
rx = IP(rx)
self.assertFalse(rx.haslayer(Ether))
self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
# eth to v6 tun
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(src=self.pg0.remote_ip6, dst=self.pg2.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('0' * 48))
rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg2)
for rx in rxs:
rx = IPv6(rx)
self.assertFalse(rx.haslayer(Ether))
self.assertEqual(rx[IPv6].dst, self.pg2.remote_ip6)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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