6 from framework import VppTestCase, VppTestRunner
7 from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
9 from scapy.layers.l2 import Ether, Raw
10 from scapy.layers.inet import IP, UDP, ICMP
11 from scapy.layers.inet6 import IPv6
14 class TestMAP(VppTestCase):
18 super(TestMAP, self).setUp()
20 # create 2 pg interfaces
21 self.create_pg_interfaces(range(4))
23 # pg0 is 'inside' IPv4
26 self.pg0.resolve_arp()
28 # pg1 is 'outside' IPv6
31 self.pg1.generate_remote_hosts(4)
32 self.pg1.configure_ipv6_neighbors()
35 super(TestMAP, self).tearDown()
36 for i in self.pg_interfaces:
41 def send_and_assert_encapped(self, tx, ip6_src, ip6_dst, dmac=None):
43 dmac = self.pg1.remote_mac
45 self.pg0.add_stream(tx)
47 self.pg_enable_capture(self.pg_interfaces)
50 rx = self.pg1.get_capture(1)
53 self.assertEqual(rx[Ether].dst, dmac)
54 self.assertEqual(rx[IP].src, tx[IP].src)
55 self.assertEqual(rx[IPv6].src, ip6_src)
56 self.assertEqual(rx[IPv6].dst, ip6_dst)
62 # Add a route to the MAP-BR
66 map_route = VppIpRoute(self,
69 [VppRoutePath(self.pg1.remote_ip6,
71 proto=DpoProto.DPO_PROTO_IP6)],
73 map_route.add_vpp_config()
76 # Add a domain that maps from pg0 to pg1
78 map_dst = socket.inet_pton(socket.AF_INET6, map_br_pfx)
80 map_src_n = socket.inet_pton(socket.AF_INET6, map_src)
81 client_pfx = socket.inet_pton(socket.AF_INET, "192.168.0.0")
83 self.vapi.map_add_domain(map_dst,
91 # Fire in a v4 packet that will be encapped to the BR
93 v4 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
94 IP(src=self.pg0.remote_ip4, dst='192.168.1.1') /
95 UDP(sport=20000, dport=10000) /
98 self.send_and_assert_encapped(v4, map_src, "2001::c0a8:0:0")
101 # Fire in a V6 encapped packet.
102 # expect a decapped packet on the inside ip4 link
104 p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
105 IPv6(dst=map_src, src="2001::1") /
106 IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
107 UDP(sport=20000, dport=10000) /
110 self.pg1.add_stream(p)
112 self.pg_enable_capture(self.pg_interfaces)
115 rx = self.pg0.get_capture(1)
118 self.assertFalse(rx.haslayer(IPv6))
119 self.assertEqual(rx[IP].src, p[IP].src)
120 self.assertEqual(rx[IP].dst, p[IP].dst)
123 # Pre-resolve. No API for this!!
125 self.vapi.ppcli("map params pre-resolve ip6-nh 4001::1")
127 self.send_and_assert_no_replies(self.pg0, v4,
128 "resovled via default route")
131 # Add a route to 4001::1. Expect the encapped traffic to be
132 # sent via that routes next-hop
134 pre_res_route = VppIpRoute(
135 self, "4001::1", 128,
136 [VppRoutePath(self.pg1.remote_hosts[2].ip6,
137 self.pg1.sw_if_index,
138 proto=DpoProto.DPO_PROTO_IP6)],
140 pre_res_route.add_vpp_config()
142 self.send_and_assert_encapped(v4, map_src,
144 dmac=self.pg1.remote_hosts[2].mac)
147 # change the route to the pre-solved next-hop
149 pre_res_route.modify([VppRoutePath(self.pg1.remote_hosts[3].ip6,
150 self.pg1.sw_if_index,
151 proto=DpoProto.DPO_PROTO_IP6)])
152 pre_res_route.add_vpp_config()
154 self.send_and_assert_encapped(v4, map_src,
156 dmac=self.pg1.remote_hosts[3].mac)
159 # cleanup. The test infra's object registry will ensure
160 # the route is really gone and thus that the unresolve worked.
162 pre_res_route.remove_vpp_config()
163 self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1")
165 if __name__ == '__main__':
166 unittest.main(testRunner=VppTestRunner)