| #!/usr/bin/env python |
| |
| from framework import VppTestCase, VppTestRunner |
| from vpp_udp_encap import * |
| from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, VppMplsLabel |
| |
| from scapy.packet import Raw |
| from scapy.layers.l2 import Ether, ARP |
| from scapy.layers.inet import IP, UDP |
| from scapy.layers.inet6 import IPv6 |
| from scapy.contrib.mpls import MPLS |
| |
| |
| class TestUdpEncap(VppTestCase): |
| """ UDP Encap Test Case """ |
| |
| def setUp(self): |
| super(TestUdpEncap, self).setUp() |
| |
| # create 2 pg interfaces |
| self.create_pg_interfaces(range(4)) |
| |
| # setup interfaces |
| # assign them different tables. |
| table_id = 0 |
| self.tables = [] |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| |
| if table_id != 0: |
| tbl = VppIpTable(self, table_id) |
| tbl.add_vpp_config() |
| self.tables.append(tbl) |
| tbl = VppIpTable(self, table_id, is_ip6=1) |
| tbl.add_vpp_config() |
| self.tables.append(tbl) |
| |
| i.set_table_ip4(table_id) |
| i.set_table_ip6(table_id) |
| i.config_ip4() |
| i.resolve_arp() |
| i.config_ip6() |
| i.resolve_ndp() |
| table_id += 1 |
| |
| def tearDown(self): |
| for i in self.pg_interfaces: |
| i.unconfig_ip4() |
| i.unconfig_ip6() |
| i.ip6_disable() |
| i.set_table_ip4(0) |
| i.set_table_ip6(0) |
| i.admin_down() |
| super(TestUdpEncap, self).tearDown() |
| |
| def validate_outer4(self, rx, encap_obj): |
| self.assertEqual(rx[IP].src, encap_obj.src_ip_s) |
| self.assertEqual(rx[IP].dst, encap_obj.dst_ip_s) |
| self.assertEqual(rx[UDP].sport, encap_obj.src_port) |
| self.assertEqual(rx[UDP].dport, encap_obj.dst_port) |
| |
| def validate_outer6(self, rx, encap_obj): |
| self.assertEqual(rx[IPv6].src, encap_obj.src_ip_s) |
| self.assertEqual(rx[IPv6].dst, encap_obj.dst_ip_s) |
| self.assertEqual(rx[UDP].sport, encap_obj.src_port) |
| self.assertEqual(rx[UDP].dport, encap_obj.dst_port) |
| |
| def validate_inner4(self, rx, tx, ttl=None): |
| self.assertEqual(rx[IP].src, tx[IP].src) |
| self.assertEqual(rx[IP].dst, tx[IP].dst) |
| if ttl: |
| self.assertEqual(rx[IP].ttl, ttl) |
| else: |
| self.assertEqual(rx[IP].ttl, tx[IP].ttl) |
| |
| def validate_inner6(self, rx, tx): |
| self.assertEqual(rx.src, tx[IPv6].src) |
| self.assertEqual(rx.dst, tx[IPv6].dst) |
| self.assertEqual(rx.hlim, tx[IPv6].hlim) |
| |
| def test_udp_encap(self): |
| """ UDP Encap test |
| """ |
| |
| # |
| # construct a UDP encap object through each of the peers |
| # v4 through the first two peears, v6 through the second. |
| # |
| udp_encap_0 = VppUdpEncap(self, 0, |
| self.pg0.local_ip4, |
| self.pg0.remote_ip4, |
| 330, 440) |
| udp_encap_1 = VppUdpEncap(self, 1, |
| self.pg1.local_ip4, |
| self.pg1.remote_ip4, |
| 331, 441, |
| table_id=1) |
| udp_encap_2 = VppUdpEncap(self, 2, |
| self.pg2.local_ip6, |
| self.pg2.remote_ip6, |
| 332, 442, |
| table_id=2, |
| is_ip6=1) |
| udp_encap_3 = VppUdpEncap(self, 3, |
| self.pg3.local_ip6, |
| self.pg3.remote_ip6, |
| 333, 443, |
| table_id=3, |
| is_ip6=1) |
| udp_encap_0.add_vpp_config() |
| udp_encap_1.add_vpp_config() |
| udp_encap_2.add_vpp_config() |
| udp_encap_3.add_vpp_config() |
| |
| # |
| # Routes via each UDP encap object - all combinations of v4 and v6. |
| # |
| route_4o4 = VppIpRoute(self, "1.1.0.1", 32, |
| [VppRoutePath("0.0.0.0", |
| 0xFFFFFFFF, |
| is_udp_encap=1, |
| next_hop_id=0)]) |
| route_4o6 = VppIpRoute(self, "1.1.2.1", 32, |
| [VppRoutePath("0.0.0.0", |
| 0xFFFFFFFF, |
| is_udp_encap=1, |
| next_hop_id=2)]) |
| route_6o4 = VppIpRoute(self, "2001::1", 128, |
| [VppRoutePath("0.0.0.0", |
| 0xFFFFFFFF, |
| is_udp_encap=1, |
| next_hop_id=1)], |
| is_ip6=1) |
| route_6o6 = VppIpRoute(self, "2001::3", 128, |
| [VppRoutePath("0.0.0.0", |
| 0xFFFFFFFF, |
| is_udp_encap=1, |
| next_hop_id=3)], |
| is_ip6=1) |
| route_4o4.add_vpp_config() |
| route_4o6.add_vpp_config() |
| route_6o6.add_vpp_config() |
| route_6o4.add_vpp_config() |
| |
| # |
| # 4o4 encap |
| # |
| p_4o4 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IP(src="2.2.2.2", dst="1.1.0.1") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| rx = self.send_and_expect(self.pg0, p_4o4*65, self.pg0) |
| for p in rx: |
| self.validate_outer4(p, udp_encap_0) |
| p = IP(p["UDP"].payload.load) |
| self.validate_inner4(p, p_4o4) |
| |
| # |
| # 4o6 encap |
| # |
| p_4o6 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IP(src="2.2.2.2", dst="1.1.2.1") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| rx = self.send_and_expect(self.pg0, p_4o6*65, self.pg2) |
| for p in rx: |
| self.validate_outer6(p, udp_encap_2) |
| p = IP(p["UDP"].payload.load) |
| self.validate_inner4(p, p_4o6) |
| |
| # |
| # 6o4 encap |
| # |
| p_6o4 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src="2001::100", dst="2001::1") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| rx = self.send_and_expect(self.pg0, p_6o4*65, self.pg1) |
| for p in rx: |
| self.validate_outer4(p, udp_encap_1) |
| p = IPv6(p["UDP"].payload.load) |
| self.validate_inner6(p, p_6o4) |
| |
| # |
| # 6o6 encap |
| # |
| p_6o6 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src="2001::100", dst="2001::3") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| rx = self.send_and_expect(self.pg0, p_6o6*65, self.pg3) |
| for p in rx: |
| self.validate_outer6(p, udp_encap_3) |
| p = IPv6(p["UDP"].payload.load) |
| self.validate_inner6(p, p_6o6) |
| |
| # |
| # A route with an output label |
| # the TTL of the inner packet is decremented on LSP ingress |
| # |
| route_4oMPLSo4 = VppIpRoute(self, "1.1.2.22", 32, |
| [VppRoutePath("0.0.0.0", |
| 0xFFFFFFFF, |
| is_udp_encap=1, |
| next_hop_id=1, |
| labels=[VppMplsLabel(66)])]) |
| route_4oMPLSo4.add_vpp_config() |
| |
| p_4omo4 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IP(src="2.2.2.2", dst="1.1.2.22") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| rx = self.send_and_expect(self.pg0, p_4omo4*65, self.pg1) |
| for p in rx: |
| self.validate_outer4(p, udp_encap_1) |
| p = MPLS(p["UDP"].payload.load) |
| self.validate_inner4(p, p_4omo4, ttl=63) |
| |
| |
| if __name__ == '__main__': |
| unittest.main(testRunner=VppTestRunner) |