6ee3aa41c3
This is the initial commit of a NPTv6 (RFC6296) implementation for VPP. It's restricted to a single internal to external binding and runs as an output/input feature on the egress interface. Type: feature Change-Id: I0e3497af97f1ebd99377b84dbf599ecea935ca24 Signed-off-by: Ole Troan <otroan@employees.org>
90 lines
2.6 KiB
Python
90 lines
2.6 KiB
Python
#!/usr/bin/env python3
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import unittest
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import ipaddress
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from framework import VppTestCase, VppTestRunner
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from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest
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from scapy.layers.l2 import Ether
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from scapy.packet import Raw
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class TestNPT66(VppTestCase):
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"""NPTv6 Test Case"""
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def setUp(self):
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super(TestNPT66, self).setUp()
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# create 2 pg interfaces
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self.create_pg_interfaces(range(2))
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for i in self.pg_interfaces:
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i.admin_up()
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i.config_ip6()
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i.resolve_ndp()
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def tearDown(self):
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for i in self.pg_interfaces:
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i.unconfig_ip6()
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i.admin_down()
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super(TestNPT66, self).tearDown()
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def send_and_verify(self, in2out, internal, external):
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if in2out:
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sendif = self.pg0
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recvif = self.pg1
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local_mac = self.pg0.local_mac
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remote_mac = self.pg0.remote_mac
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src = ipaddress.ip_interface(internal).ip + 1
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dst = self.pg1.remote_ip6
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else:
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sendif = self.pg1
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recvif = self.pg0
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local_mac = self.pg1.local_mac
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remote_mac = self.pg1.remote_mac
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src = self.pg1.remote_ip6
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dst = ipaddress.ip_interface(external).ip + 1
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p = (
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Ether(dst=local_mac, src=remote_mac)
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/ IPv6(src=src, dst=dst)
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/ ICMPv6EchoRequest()
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)
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rxs = self.send_and_expect(sendif, p, recvif)
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for rx in rxs:
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rx.show2()
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original_cksum = rx[ICMPv6EchoRequest].cksum
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del rx[ICMPv6EchoRequest].cksum
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rx = rx.__class__(bytes(rx))
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self.assertEqual(original_cksum, rx[ICMPv6EchoRequest].cksum)
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def do_test(self, internal, external):
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self.vapi.npt66_binding_add_del(
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sw_if_index=self.pg1.sw_if_index,
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internal=internal,
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external=external,
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is_add=True,
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)
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self.vapi.cli(f"ip route add {internal} via {self.pg0.remote_ip6}")
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self.send_and_verify(True, internal, external)
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self.send_and_verify(False, internal, external)
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self.vapi.npt66_binding_add_del(
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sw_if_index=self.pg1.sw_if_index,
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internal=internal,
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external=external,
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is_add=False,
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)
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def test_npt66_simple(self):
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"""Send and receive a packet through NPT66"""
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self.do_test("fc00:1::/48", "2001:db8:1::/48")
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self.do_test("fc00:1234::/32", "2001:db8:1::/32")
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self.do_test("fc00:1234::/63", "2001:db8:1::/56")
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if __name__ == "__main__":
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unittest.main(testRunner=VppTestRunner)
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