| #!/usr/bin/env python3 |
| |
| import socket |
| from socket import inet_pton, inet_ntop |
| import unittest |
| |
| from parameterized import parameterized |
| import scapy.compat |
| import scapy.layers.inet6 as inet6 |
| from scapy.contrib.mpls import MPLS |
| from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_RS, \ |
| ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \ |
| ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \ |
| ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply, \ |
| IPv6ExtHdrHopByHop, ICMPv6MLReport2, ICMPv6MLDMultAddrRec |
| from scapy.layers.l2 import Ether, Dot1Q |
| from scapy.packet import Raw |
| from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \ |
| in6_mactoifaceid |
| from six import moves |
| |
| from framework import VppTestCase, VppTestRunner, tag_run_solo |
| from util import ppp, ip6_normalize, mk_ll_addr |
| from vpp_papi import VppEnum |
| from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect |
| from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \ |
| VppMRoutePath, VppMplsIpBind, \ |
| VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, FibPathProto, \ |
| VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump, \ |
| VppIp6LinkLocalAddress |
| from vpp_neighbor import find_nbr, VppNeighbor |
| from vpp_pg_interface import is_ipv6_misc |
| from vpp_sub_interface import VppSubInterface, VppDot1QSubint |
| from vpp_policer import VppPolicer, PolicerAction |
| from ipaddress import IPv6Network, IPv6Address |
| |
| AF_INET6 = socket.AF_INET6 |
| |
| try: |
| text_type = unicode |
| except NameError: |
| text_type = str |
| |
| NUM_PKTS = 67 |
| |
| |
| class TestIPv6ND(VppTestCase): |
| def validate_ra(self, intf, rx, dst_ip=None): |
| if not dst_ip: |
| dst_ip = intf.remote_ip6 |
| |
| # unicasted packets must come to the unicast mac |
| self.assertEqual(rx[Ether].dst, intf.remote_mac) |
| |
| # and from the router's MAC |
| self.assertEqual(rx[Ether].src, intf.local_mac) |
| |
| # the rx'd RA should be addressed to the sender's source |
| self.assertTrue(rx.haslayer(ICMPv6ND_RA)) |
| self.assertEqual(in6_ptop(rx[IPv6].dst), |
| in6_ptop(dst_ip)) |
| |
| # and come from the router's link local |
| self.assertTrue(in6_islladdr(rx[IPv6].src)) |
| self.assertEqual(in6_ptop(rx[IPv6].src), |
| in6_ptop(mk_ll_addr(intf.local_mac))) |
| |
| def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None): |
| if not dst_ip: |
| dst_ip = intf.remote_ip6 |
| if not tgt_ip: |
| dst_ip = intf.local_ip6 |
| |
| # unicasted packets must come to the unicast mac |
| self.assertEqual(rx[Ether].dst, intf.remote_mac) |
| |
| # and from the router's MAC |
| self.assertEqual(rx[Ether].src, intf.local_mac) |
| |
| # the rx'd NA should be addressed to the sender's source |
| self.assertTrue(rx.haslayer(ICMPv6ND_NA)) |
| self.assertEqual(in6_ptop(rx[IPv6].dst), |
| in6_ptop(dst_ip)) |
| |
| # and come from the target address |
| self.assertEqual( |
| in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip)) |
| |
| # Dest link-layer options should have the router's MAC |
| dll = rx[ICMPv6NDOptDstLLAddr] |
| self.assertEqual(dll.lladdr, intf.local_mac) |
| |
| def validate_ns(self, intf, rx, tgt_ip): |
| nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip)) |
| dst_ip = inet_ntop(AF_INET6, nsma) |
| |
| # NS is broadcast |
| self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma)) |
| |
| # and from the router's MAC |
| self.assertEqual(rx[Ether].src, intf.local_mac) |
| |
| # the rx'd NS should be addressed to an mcast address |
| # derived from the target address |
| self.assertEqual( |
| in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip)) |
| |
| # expect the tgt IP in the NS header |
| ns = rx[ICMPv6ND_NS] |
| self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip)) |
| |
| # packet is from the router's local address |
| self.assertEqual( |
| in6_ptop(rx[IPv6].src), intf.local_ip6) |
| |
| # Src link-layer options should have the router's MAC |
| sll = rx[ICMPv6NDOptSrcLLAddr] |
| self.assertEqual(sll.lladdr, intf.local_mac) |
| |
| def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None, |
| filter_out_fn=is_ipv6_misc): |
| intf.add_stream(pkts) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = intf.get_capture(1, filter_out_fn=filter_out_fn) |
| |
| self.assertEqual(len(rx), 1) |
| rx = rx[0] |
| self.validate_ra(intf, rx, dst_ip) |
| |
| def send_and_expect_na(self, intf, pkts, remark, dst_ip=None, |
| tgt_ip=None, |
| filter_out_fn=is_ipv6_misc): |
| intf.add_stream(pkts) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = intf.get_capture(1, filter_out_fn=filter_out_fn) |
| |
| self.assertEqual(len(rx), 1) |
| rx = rx[0] |
| self.validate_na(intf, rx, dst_ip, tgt_ip) |
| |
| def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip, |
| filter_out_fn=is_ipv6_misc): |
| self.vapi.cli("clear trace") |
| tx_intf.add_stream(pkts) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn) |
| |
| self.assertEqual(len(rx), 1) |
| rx = rx[0] |
| self.validate_ns(rx_intf, rx, tgt_ip) |
| |
| def verify_ip(self, rx, smac, dmac, sip, dip): |
| ether = rx[Ether] |
| self.assertEqual(ether.dst, dmac) |
| self.assertEqual(ether.src, smac) |
| |
| ip = rx[IPv6] |
| self.assertEqual(ip.src, sip) |
| self.assertEqual(ip.dst, dip) |
| |
| |
| @tag_run_solo |
| class TestIPv6(TestIPv6ND): |
| """ IPv6 Test Case """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPv6, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPv6, cls).tearDownClass() |
| |
| def setUp(self): |
| """ |
| Perform test setup before test case. |
| |
| **Config:** |
| - create 3 pg interfaces |
| - untagged pg0 interface |
| - Dot1Q subinterface on pg1 |
| - Dot1AD subinterface on pg2 |
| - setup interfaces: |
| - put it into UP state |
| - set IPv6 addresses |
| - resolve neighbor address using NDP |
| - configure 200 fib entries |
| |
| :ivar list interfaces: pg interfaces and subinterfaces. |
| :ivar dict flows: IPv4 packet flows in test. |
| |
| *TODO:* Create AD sub interface |
| """ |
| super(TestIPv6, self).setUp() |
| |
| # create 3 pg interfaces |
| self.create_pg_interfaces(range(3)) |
| |
| # create 2 subinterfaces for p1 and pg2 |
| self.sub_interfaces = [ |
| VppDot1QSubint(self, self.pg1, 100), |
| VppDot1QSubint(self, self.pg2, 200) |
| # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400) |
| ] |
| |
| # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc. |
| self.flows = dict() |
| self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if] |
| self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if] |
| self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if] |
| |
| # packet sizes |
| self.pg_if_packet_sizes = [64, 1500, 9020] |
| |
| self.interfaces = list(self.pg_interfaces) |
| self.interfaces.extend(self.sub_interfaces) |
| |
| # setup all interfaces |
| for i in self.interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| |
| def tearDown(self): |
| """Run standard test teardown and log ``show ip6 neighbors``.""" |
| for i in self.interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| for i in self.sub_interfaces: |
| i.remove_vpp_config() |
| |
| super(TestIPv6, self).tearDown() |
| if not self.vpp_dead: |
| self.logger.info(self.vapi.cli("show ip6 neighbors")) |
| # info(self.vapi.cli("show ip6 fib")) # many entries |
| |
| def modify_packet(self, src_if, packet_size, pkt): |
| """Add load, set destination IP and extend packet to required packet |
| size for defined interface. |
| |
| :param VppInterface src_if: Interface to create packet for. |
| :param int packet_size: Required packet size. |
| :param Scapy pkt: Packet to be modified. |
| """ |
| dst_if_idx = int(packet_size / 10 % 2) |
| dst_if = self.flows[src_if][dst_if_idx] |
| info = self.create_packet_info(src_if, dst_if) |
| payload = self.info_to_payload(info) |
| p = pkt / Raw(payload) |
| p[IPv6].dst = dst_if.remote_ip6 |
| info.data = p.copy() |
| if isinstance(src_if, VppSubInterface): |
| p = src_if.add_dot1_layer(p) |
| self.extend_packet(p, packet_size) |
| |
| return p |
| |
| def create_stream(self, src_if): |
| """Create input packet stream for defined interface. |
| |
| :param VppInterface src_if: Interface to create packet stream for. |
| """ |
| hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0 |
| pkt_tmpl = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / |
| IPv6(src=src_if.remote_ip6) / |
| inet6.UDP(sport=1234, dport=1234)) |
| |
| pkts = [self.modify_packet(src_if, i, pkt_tmpl) |
| for i in moves.range(self.pg_if_packet_sizes[0], |
| self.pg_if_packet_sizes[1], 10)] |
| pkts_b = [self.modify_packet(src_if, i, pkt_tmpl) |
| for i in moves.range(self.pg_if_packet_sizes[1] + hdr_ext, |
| self.pg_if_packet_sizes[2] + hdr_ext, |
| 50)] |
| pkts.extend(pkts_b) |
| |
| return pkts |
| |
| def verify_capture(self, dst_if, capture): |
| """Verify captured input packet stream for defined interface. |
| |
| :param VppInterface dst_if: Interface to verify captured packet stream |
| for. |
| :param list capture: Captured packet stream. |
| """ |
| self.logger.info("Verifying capture on interface %s" % dst_if.name) |
| last_info = dict() |
| for i in self.interfaces: |
| last_info[i.sw_if_index] = None |
| is_sub_if = False |
| dst_sw_if_index = dst_if.sw_if_index |
| if hasattr(dst_if, 'parent'): |
| is_sub_if = True |
| for packet in capture: |
| if is_sub_if: |
| # Check VLAN tags and Ethernet header |
| packet = dst_if.remove_dot1_layer(packet) |
| self.assertTrue(Dot1Q not in packet) |
| try: |
| ip = packet[IPv6] |
| udp = packet[inet6.UDP] |
| payload_info = self.payload_to_info(packet[Raw]) |
| packet_index = payload_info.index |
| self.assertEqual(payload_info.dst, dst_sw_if_index) |
| self.logger.debug( |
| "Got packet on port %s: src=%u (id=%u)" % |
| (dst_if.name, payload_info.src, packet_index)) |
| next_info = self.get_next_packet_info_for_interface2( |
| payload_info.src, dst_sw_if_index, |
| last_info[payload_info.src]) |
| last_info[payload_info.src] = next_info |
| self.assertTrue(next_info is not None) |
| self.assertEqual(packet_index, next_info.index) |
| saved_packet = next_info.data |
| # Check standard fields |
| self.assertEqual( |
| ip.src, saved_packet[IPv6].src) |
| self.assertEqual( |
| ip.dst, saved_packet[IPv6].dst) |
| self.assertEqual( |
| udp.sport, saved_packet[inet6.UDP].sport) |
| self.assertEqual( |
| udp.dport, saved_packet[inet6.UDP].dport) |
| except: |
| self.logger.error(ppp("Unexpected or invalid packet:", packet)) |
| raise |
| for i in self.interfaces: |
| remaining_packet = self.get_next_packet_info_for_interface2( |
| i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index]) |
| self.assertTrue(remaining_packet is None, |
| "Interface %s: Packet expected from interface %s " |
| "didn't arrive" % (dst_if.name, i.name)) |
| |
| def test_next_header_anomaly(self): |
| """ IPv6 next header anomaly test |
| |
| Test scenario: |
| - ipv6 next header field = Fragment Header (44) |
| - next header is ICMPv6 Echo Request |
| - wait for reassembly |
| """ |
| pkt = (Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) / |
| IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44) / |
| ICMPv6EchoRequest()) |
| |
| self.pg0.add_stream(pkt) |
| self.pg_start() |
| |
| # wait for reassembly |
| self.sleep(10) |
| |
| def test_fib(self): |
| """ IPv6 FIB test |
| |
| Test scenario: |
| - Create IPv6 stream for pg0 interface |
| - Create IPv6 tagged streams for pg1's and pg2's subinterface. |
| - Send and verify received packets on each interface. |
| """ |
| |
| pkts = self.create_stream(self.pg0) |
| self.pg0.add_stream(pkts) |
| |
| for i in self.sub_interfaces: |
| pkts = self.create_stream(i) |
| i.parent.add_stream(pkts) |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| pkts = self.pg0.get_capture() |
| self.verify_capture(self.pg0, pkts) |
| |
| for i in self.sub_interfaces: |
| pkts = i.parent.get_capture() |
| self.verify_capture(i, pkts) |
| |
| def test_ns(self): |
| """ IPv6 Neighbour Solicitation Exceptions |
| |
| Test scenario: |
| - Send an NS Sourced from an address not covered by the link sub-net |
| - Send an NS to an mcast address the router has not joined |
| - Send NS for a target address the router does not onn. |
| """ |
| |
| # |
| # An NS from a non link source address |
| # |
| nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6)) |
| d = inet_ntop(AF_INET6, nsma) |
| |
| p = (Ether(dst=in6_getnsmac(nsma)) / |
| IPv6(dst=d, src="2002::2") / |
| ICMPv6ND_NS(tgt=self.pg0.local_ip6) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0.remote_mac)) |
| pkts = [p] |
| |
| self.send_and_assert_no_replies( |
| self.pg0, pkts, |
| "No response to NS source by address not on sub-net") |
| |
| # |
| # An NS for sent to a solicited mcast group the router is |
| # not a member of FAILS |
| # |
| if 0: |
| nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff")) |
| d = inet_ntop(AF_INET6, nsma) |
| |
| p = (Ether(dst=in6_getnsmac(nsma)) / |
| IPv6(dst=d, src=self.pg0.remote_ip6) / |
| ICMPv6ND_NS(tgt=self.pg0.local_ip6) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0.remote_mac)) |
| pkts = [p] |
| |
| self.send_and_assert_no_replies( |
| self.pg0, pkts, |
| "No response to NS sent to unjoined mcast address") |
| |
| # |
| # An NS whose target address is one the router does not own |
| # |
| nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6)) |
| d = inet_ntop(AF_INET6, nsma) |
| |
| p = (Ether(dst=in6_getnsmac(nsma)) / |
| IPv6(dst=d, src=self.pg0.remote_ip6) / |
| ICMPv6ND_NS(tgt="fd::ffff") / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0.remote_mac)) |
| pkts = [p] |
| |
| self.send_and_assert_no_replies(self.pg0, pkts, |
| "No response to NS for unknown target") |
| |
| # |
| # A neighbor entry that has no associated FIB-entry |
| # |
| self.pg0.generate_remote_hosts(4) |
| nd_entry = VppNeighbor(self, |
| self.pg0.sw_if_index, |
| self.pg0.remote_hosts[2].mac, |
| self.pg0.remote_hosts[2].ip6, |
| is_no_fib_entry=1) |
| nd_entry.add_vpp_config() |
| |
| # |
| # check we have the neighbor, but no route |
| # |
| self.assertTrue(find_nbr(self, |
| self.pg0.sw_if_index, |
| self.pg0._remote_hosts[2].ip6)) |
| self.assertFalse(find_route(self, |
| self.pg0._remote_hosts[2].ip6, |
| 128)) |
| |
| # |
| # send an NS from a link local address to the interface's global |
| # address |
| # |
| p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) / |
| IPv6( |
| dst=d, src=self.pg0._remote_hosts[2].ip6_ll) / |
| ICMPv6ND_NS(tgt=self.pg0.local_ip6) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0.remote_mac)) |
| |
| self.send_and_expect_na(self.pg0, p, |
| "NS from link-local", |
| dst_ip=self.pg0._remote_hosts[2].ip6_ll, |
| tgt_ip=self.pg0.local_ip6) |
| |
| # |
| # we should have learned an ND entry for the peer's link-local |
| # but not inserted a route to it in the FIB |
| # |
| self.assertTrue(find_nbr(self, |
| self.pg0.sw_if_index, |
| self.pg0._remote_hosts[2].ip6_ll)) |
| self.assertFalse(find_route(self, |
| self.pg0._remote_hosts[2].ip6_ll, |
| 128)) |
| |
| # |
| # An NS to the router's own Link-local |
| # |
| p = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) / |
| IPv6( |
| dst=d, src=self.pg0._remote_hosts[3].ip6_ll) / |
| ICMPv6ND_NS(tgt=self.pg0.local_ip6_ll) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0.remote_mac)) |
| |
| self.send_and_expect_na(self.pg0, p, |
| "NS to/from link-local", |
| dst_ip=self.pg0._remote_hosts[3].ip6_ll, |
| tgt_ip=self.pg0.local_ip6_ll) |
| |
| # |
| # we should have learned an ND entry for the peer's link-local |
| # but not inserted a route to it in the FIB |
| # |
| self.assertTrue(find_nbr(self, |
| self.pg0.sw_if_index, |
| self.pg0._remote_hosts[3].ip6_ll)) |
| self.assertFalse(find_route(self, |
| self.pg0._remote_hosts[3].ip6_ll, |
| 128)) |
| |
| def test_ns_duplicates(self): |
| """ ND Duplicates""" |
| |
| # |
| # Generate some hosts on the LAN |
| # |
| self.pg1.generate_remote_hosts(3) |
| |
| # |
| # Add host 1 on pg1 and pg2 |
| # |
| ns_pg1 = VppNeighbor(self, |
| self.pg1.sw_if_index, |
| self.pg1.remote_hosts[1].mac, |
| self.pg1.remote_hosts[1].ip6) |
| ns_pg1.add_vpp_config() |
| ns_pg2 = VppNeighbor(self, |
| self.pg2.sw_if_index, |
| self.pg2.remote_mac, |
| self.pg1.remote_hosts[1].ip6) |
| ns_pg2.add_vpp_config() |
| |
| # |
| # IP packet destined for pg1 remote host arrives on pg1 again. |
| # |
| p = (Ether(dst=self.pg0.local_mac, |
| src=self.pg0.remote_mac) / |
| IPv6(src=self.pg0.remote_ip6, |
| dst=self.pg1.remote_hosts[1].ip6) / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw()) |
| |
| self.pg0.add_stream(p) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx1 = self.pg1.get_capture(1) |
| |
| self.verify_ip(rx1[0], |
| self.pg1.local_mac, |
| self.pg1.remote_hosts[1].mac, |
| self.pg0.remote_ip6, |
| self.pg1.remote_hosts[1].ip6) |
| |
| # |
| # remove the duplicate on pg1 |
| # packet stream should generate NSs out of pg1 |
| # |
| ns_pg1.remove_vpp_config() |
| |
| self.send_and_expect_ns(self.pg0, self.pg1, |
| p, self.pg1.remote_hosts[1].ip6) |
| |
| # |
| # Add it back |
| # |
| ns_pg1.add_vpp_config() |
| |
| self.pg0.add_stream(p) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx1 = self.pg1.get_capture(1) |
| |
| self.verify_ip(rx1[0], |
| self.pg1.local_mac, |
| self.pg1.remote_hosts[1].mac, |
| self.pg0.remote_ip6, |
| self.pg1.remote_hosts[1].ip6) |
| |
| def validate_ra(self, intf, rx, dst_ip=None, src_ip=None, |
| mtu=9000, pi_opt=None): |
| if not dst_ip: |
| dst_ip = intf.remote_ip6 |
| if not src_ip: |
| src_ip = mk_ll_addr(intf.local_mac) |
| |
| # unicasted packets must come to the unicast mac |
| self.assertEqual(rx[Ether].dst, intf.remote_mac) |
| |
| # and from the router's MAC |
| self.assertEqual(rx[Ether].src, intf.local_mac) |
| |
| # the rx'd RA should be addressed to the sender's source |
| self.assertTrue(rx.haslayer(ICMPv6ND_RA)) |
| self.assertEqual(in6_ptop(rx[IPv6].dst), |
| in6_ptop(dst_ip)) |
| |
| # and come from the router's link local |
| self.assertTrue(in6_islladdr(rx[IPv6].src)) |
| self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(src_ip)) |
| |
| # it should contain the links MTU |
| ra = rx[ICMPv6ND_RA] |
| self.assertEqual(ra[ICMPv6NDOptMTU].mtu, mtu) |
| |
| # it should contain the source's link layer address option |
| sll = ra[ICMPv6NDOptSrcLLAddr] |
| self.assertEqual(sll.lladdr, intf.local_mac) |
| |
| if not pi_opt: |
| # the RA should not contain prefix information |
| self.assertFalse(ra.haslayer( |
| ICMPv6NDOptPrefixInfo)) |
| else: |
| raos = rx.getlayer(ICMPv6NDOptPrefixInfo, 1) |
| |
| # the options are nested in the scapy packet in way that i cannot |
| # decipher how to decode. this 1st layer of option always returns |
| # nested classes, so a direct obj1=obj2 comparison always fails. |
| # however, the getlayer(.., 2) does give one instance. |
| # so we cheat here and construct a new opt instance for comparison |
| rd = ICMPv6NDOptPrefixInfo( |
| prefixlen=raos.prefixlen, |
| prefix=raos.prefix, |
| L=raos.L, |
| A=raos.A) |
| if type(pi_opt) is list: |
| for ii in range(len(pi_opt)): |
| self.assertEqual(pi_opt[ii], rd) |
| rd = rx.getlayer( |
| ICMPv6NDOptPrefixInfo, ii + 2) |
| else: |
| self.assertEqual(pi_opt, raos, 'Expected: %s, received: %s' |
| % (pi_opt.show(dump=True), |
| raos.show(dump=True))) |
| |
| def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None, |
| filter_out_fn=is_ipv6_misc, |
| opt=None, |
| src_ip=None): |
| self.vapi.cli("clear trace") |
| intf.add_stream(pkts) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = intf.get_capture(1, filter_out_fn=filter_out_fn) |
| |
| self.assertEqual(len(rx), 1) |
| rx = rx[0] |
| self.validate_ra(intf, rx, dst_ip, src_ip=src_ip, pi_opt=opt) |
| |
| def test_rs(self): |
| """ IPv6 Router Solicitation Exceptions |
| |
| Test scenario: |
| """ |
| |
| # |
| # Before we begin change the IPv6 RA responses to use the unicast |
| # address - that way we will not confuse them with the periodic |
| # RAs which go to the mcast address |
| # Sit and wait for the first periodic RA. |
| # |
| # TODO |
| # |
| self.pg0.ip6_ra_config(send_unicast=1) |
| |
| # |
| # An RS from a link source address |
| # - expect an RA in return |
| # |
| p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) / |
| ICMPv6ND_RS()) |
| pkts = [p] |
| self.send_and_expect_ra(self.pg0, pkts, "Genuine RS") |
| |
| # |
| # For the next RS sent the RA should be rate limited |
| # |
| self.send_and_assert_no_replies(self.pg0, pkts, "RA rate limited") |
| |
| # |
| # When we reconfigure the IPv6 RA config, |
| # we reset the RA rate limiting, |
| # so we need to do this before each test below so as not to drop |
| # packets for rate limiting reasons. Test this works here. |
| # |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, pkts, "Rate limit reset RS") |
| |
| # |
| # An RS sent from a non-link local source |
| # |
| self.pg0.ip6_ra_config(send_unicast=1) |
| p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| IPv6(dst=self.pg0.local_ip6, |
| src="2002::ffff") / |
| ICMPv6ND_RS()) |
| pkts = [p] |
| self.send_and_assert_no_replies(self.pg0, pkts, |
| "RS from non-link source") |
| |
| # |
| # Source an RS from a link local address |
| # |
| self.pg0.ip6_ra_config(send_unicast=1) |
| ll = mk_ll_addr(self.pg0.remote_mac) |
| p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| IPv6(dst=self.pg0.local_ip6, src=ll) / |
| ICMPv6ND_RS()) |
| pkts = [p] |
| self.send_and_expect_ra(self.pg0, pkts, |
| "RS sourced from link-local", |
| dst_ip=ll) |
| |
| # |
| # Send the RS multicast |
| # |
| self.pg0.ip6_ra_config(send_unicast=1) |
| dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2")) |
| ll = mk_ll_addr(self.pg0.remote_mac) |
| p = (Ether(dst=dmac, src=self.pg0.remote_mac) / |
| IPv6(dst="ff02::2", src=ll) / |
| ICMPv6ND_RS()) |
| pkts = [p] |
| self.send_and_expect_ra(self.pg0, pkts, |
| "RS sourced from link-local", |
| dst_ip=ll) |
| |
| # |
| # Source from the unspecified address ::. This happens when the RS |
| # is sent before the host has a configured address/sub-net, |
| # i.e. auto-config. Since the sender has no IP address, the reply |
| # comes back mcast - so the capture needs to not filter this. |
| # If we happen to pick up the periodic RA at this point then so be it, |
| # it's not an error. |
| # |
| self.pg0.ip6_ra_config(send_unicast=1, suppress=1) |
| p = (Ether(dst=dmac, src=self.pg0.remote_mac) / |
| IPv6(dst="ff02::2", src="::") / |
| ICMPv6ND_RS()) |
| pkts = [p] |
| self.send_and_expect_ra(self.pg0, pkts, |
| "RS sourced from unspecified", |
| dst_ip="ff02::1", |
| filter_out_fn=None) |
| |
| # |
| # Configure The RA to announce the links prefix |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len)) |
| |
| # |
| # RAs should now contain the prefix information option |
| # |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=1, |
| A=1) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| ll = mk_ll_addr(self.pg0.remote_mac) |
| p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| IPv6(dst=self.pg0.local_ip6, src=ll) / |
| ICMPv6ND_RS()) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with prefix-info", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Change the prefix info to not off-link |
| # L-flag is clear |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len), |
| off_link=1) |
| |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=0, |
| A=1) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix info with L-flag=0", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Change the prefix info to not off-link, no-autoconfig |
| # L and A flag are clear in the advert |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len), |
| off_link=1, |
| no_autoconfig=1) |
| |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=0, |
| A=0) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix info with A & L-flag=0", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Change the flag settings back to the defaults |
| # L and A flag are set in the advert |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len)) |
| |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=1, |
| A=1) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix info", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Change the prefix info to not off-link, no-autoconfig |
| # L and A flag are clear in the advert |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len), |
| off_link=1, |
| no_autoconfig=1) |
| |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=0, |
| A=0) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix info with A & L-flag=0", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Use the reset to defaults option to revert to defaults |
| # L and A flag are clear in the advert |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len), |
| use_default=1) |
| |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=1, |
| A=1) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix reverted to defaults", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Advertise Another prefix. With no L-flag/A-flag |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6, |
| self.pg1.local_ip6_prefix_len), |
| off_link=1, |
| no_autoconfig=1) |
| |
| opt = [ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg0.local_ip6_prefix_len, |
| prefix=self.pg0.local_ip6, |
| L=1, |
| A=1), |
| ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg1.local_ip6_prefix_len, |
| prefix=self.pg1.local_ip6, |
| L=0, |
| A=0)] |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| ll = mk_ll_addr(self.pg0.remote_mac) |
| p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| IPv6(dst=self.pg0.local_ip6, src=ll) / |
| ICMPv6ND_RS()) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with multiple Prefix infos", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Remove the first prefix-info - expect the second is still in the |
| # advert |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg0.local_ip6, |
| self.pg0.local_ip6_prefix_len), |
| is_no=1) |
| |
| opt = ICMPv6NDOptPrefixInfo( |
| prefixlen=self.pg1.local_ip6_prefix_len, |
| prefix=self.pg1.local_ip6, |
| L=0, |
| A=0) |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix reverted to defaults", |
| dst_ip=ll, |
| opt=opt) |
| |
| # |
| # Remove the second prefix-info - expect no prefix-info in the adverts |
| # |
| self.pg0.ip6_ra_prefix('%s/%s' % (self.pg1.local_ip6, |
| self.pg1.local_ip6_prefix_len), |
| is_no=1) |
| |
| # |
| # change the link's link local, so we know that works too. |
| # |
| self.vapi.sw_interface_ip6_set_link_local_address( |
| sw_if_index=self.pg0.sw_if_index, |
| ip="fe80::88") |
| |
| self.pg0.ip6_ra_config(send_unicast=1) |
| self.send_and_expect_ra(self.pg0, p, |
| "RA with Prefix reverted to defaults", |
| dst_ip=ll, |
| src_ip="fe80::88") |
| |
| # |
| # Reset the periodic advertisements back to default values |
| # |
| self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0) |
| |
| def test_mld(self): |
| """ MLD Report """ |
| # |
| # test one MLD is sent after applying an IPv6 Address on an interface |
| # |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| subitf = VppDot1QSubint(self, self.pg1, 99) |
| |
| subitf.admin_up() |
| subitf.config_ip6() |
| |
| rxs = self.pg1._get_capture(timeout=4, filter_out_fn=None) |
| |
| # |
| # hunt for the MLD on vlan 99 |
| # |
| for rx in rxs: |
| # make sure ipv6 packets with hop by hop options have |
| # correct checksums |
| self.assert_packet_checksums_valid(rx) |
| if rx.haslayer(IPv6ExtHdrHopByHop) and \ |
| rx.haslayer(Dot1Q) and \ |
| rx[Dot1Q].vlan == 99: |
| mld = rx[ICMPv6MLReport2] |
| |
| self.assertEqual(mld.records_number, 4) |
| |
| |
| class TestIPv6RouteLookup(VppTestCase): |
| """ IPv6 Route Lookup Test Case """ |
| routes = [] |
| |
| def route_lookup(self, prefix, exact): |
| return self.vapi.api(self.vapi.papi.ip_route_lookup, |
| { |
| 'table_id': 0, |
| 'exact': exact, |
| 'prefix': prefix, |
| }) |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPv6RouteLookup, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPv6RouteLookup, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPv6RouteLookup, self).setUp() |
| |
| drop_nh = VppRoutePath("::1", 0xffffffff, |
| type=FibPathType.FIB_PATH_TYPE_DROP) |
| |
| # Add 3 routes |
| r = VppIpRoute(self, "2001:1111::", 32, [drop_nh]) |
| r.add_vpp_config() |
| self.routes.append(r) |
| |
| r = VppIpRoute(self, "2001:1111:2222::", 48, [drop_nh]) |
| r.add_vpp_config() |
| self.routes.append(r) |
| |
| r = VppIpRoute(self, "2001:1111:2222::1", 128, [drop_nh]) |
| r.add_vpp_config() |
| self.routes.append(r) |
| |
| def tearDown(self): |
| # Remove the routes we added |
| for r in self.routes: |
| r.remove_vpp_config() |
| |
| super(TestIPv6RouteLookup, self).tearDown() |
| |
| def test_exact_match(self): |
| # Verify we find the host route |
| prefix = "2001:1111:2222::1/128" |
| result = self.route_lookup(prefix, True) |
| assert (prefix == str(result.route.prefix)) |
| |
| # Verify we find a middle prefix route |
| prefix = "2001:1111:2222::/48" |
| result = self.route_lookup(prefix, True) |
| assert (prefix == str(result.route.prefix)) |
| |
| # Verify we do not find an available LPM. |
| with self.vapi.assert_negative_api_retval(): |
| self.route_lookup("2001::2/128", True) |
| |
| def test_longest_prefix_match(self): |
| # verify we find lpm |
| lpm_prefix = "2001:1111:2222::/48" |
| result = self.route_lookup("2001:1111:2222::2/128", False) |
| assert (lpm_prefix == str(result.route.prefix)) |
| |
| # Verify we find the exact when not requested |
| result = self.route_lookup(lpm_prefix, False) |
| assert (lpm_prefix == str(result.route.prefix)) |
| |
| # Can't seem to delete the default route so no negative LPM test. |
| |
| |
| class TestIPv6IfAddrRoute(VppTestCase): |
| """ IPv6 Interface Addr Route Test Case """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPv6IfAddrRoute, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPv6IfAddrRoute, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPv6IfAddrRoute, self).setUp() |
| |
| # create 1 pg interface |
| self.create_pg_interfaces(range(1)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| |
| def tearDown(self): |
| super(TestIPv6IfAddrRoute, self).tearDown() |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| def test_ipv6_ifaddrs_same_prefix(self): |
| """ IPv6 Interface Addresses Same Prefix test |
| |
| Test scenario: |
| |
| - Verify no route in FIB for prefix 2001:10::/64 |
| - Configure IPv4 address 2001:10::10/64 on an interface |
| - Verify route in FIB for prefix 2001:10::/64 |
| - Configure IPv4 address 2001:10::20/64 on an interface |
| - Delete 2001:10::10/64 from interface |
| - Verify route in FIB for prefix 2001:10::/64 |
| - Delete 2001:10::20/64 from interface |
| - Verify no route in FIB for prefix 2001:10::/64 |
| """ |
| |
| addr1 = "2001:10::10" |
| addr2 = "2001:10::20" |
| |
| if_addr1 = VppIpInterfaceAddress(self, self.pg0, addr1, 64) |
| if_addr2 = VppIpInterfaceAddress(self, self.pg0, addr2, 64) |
| self.assertFalse(if_addr1.query_vpp_config()) |
| self.assertFalse(find_route(self, addr1, 128)) |
| self.assertFalse(find_route(self, addr2, 128)) |
| |
| # configure first address, verify route present |
| if_addr1.add_vpp_config() |
| self.assertTrue(if_addr1.query_vpp_config()) |
| self.assertTrue(find_route(self, addr1, 128)) |
| self.assertFalse(find_route(self, addr2, 128)) |
| |
| # configure second address, delete first, verify route not removed |
| if_addr2.add_vpp_config() |
| if_addr1.remove_vpp_config() |
| self.assertFalse(if_addr1.query_vpp_config()) |
| self.assertTrue(if_addr2.query_vpp_config()) |
| self.assertFalse(find_route(self, addr1, 128)) |
| self.assertTrue(find_route(self, addr2, 128)) |
| |
| # delete second address, verify route removed |
| if_addr2.remove_vpp_config() |
| self.assertFalse(if_addr1.query_vpp_config()) |
| self.assertFalse(find_route(self, addr1, 128)) |
| self.assertFalse(find_route(self, addr2, 128)) |
| |
| def test_ipv6_ifaddr_del(self): |
| """ Delete an interface address that does not exist """ |
| |
| loopbacks = self.create_loopback_interfaces(1) |
| lo = self.lo_interfaces[0] |
| |
| lo.config_ip6() |
| lo.admin_up() |
| |
| # |
| # try and remove pg0's subnet from lo |
| # |
| with self.vapi.assert_negative_api_retval(): |
| self.vapi.sw_interface_add_del_address( |
| sw_if_index=lo.sw_if_index, |
| prefix=self.pg0.local_ip6_prefix, |
| is_add=0) |
| |
| |
| class TestICMPv6Echo(VppTestCase): |
| """ ICMPv6 Echo Test Case """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestICMPv6Echo, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestICMPv6Echo, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestICMPv6Echo, self).setUp() |
| |
| # create 1 pg interface |
| self.create_pg_interfaces(range(1)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp(link_layer=True) |
| i.resolve_ndp() |
| |
| def tearDown(self): |
| super(TestICMPv6Echo, self).tearDown() |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| def test_icmpv6_echo(self): |
| """ VPP replies to ICMPv6 Echo Request |
| |
| Test scenario: |
| |
| - Receive ICMPv6 Echo Request message on pg0 interface. |
| - Check outgoing ICMPv6 Echo Reply message on pg0 interface. |
| """ |
| |
| # test both with global and local ipv6 addresses |
| dsts = (self.pg0.local_ip6, self.pg0.local_ip6_ll) |
| id = 0xb |
| seq = 5 |
| data = b'\x0a' * 18 |
| p = list() |
| for dst in dsts: |
| p.append((Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / |
| IPv6(src=self.pg0.remote_ip6, dst=dst) / |
| ICMPv6EchoRequest(id=id, seq=seq, data=data))) |
| |
| self.pg0.add_stream(p) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rxs = self.pg0.get_capture(len(dsts)) |
| |
| for rx, dst in zip(rxs, dsts): |
| ether = rx[Ether] |
| ipv6 = rx[IPv6] |
| icmpv6 = rx[ICMPv6EchoReply] |
| self.assertEqual(ether.src, self.pg0.local_mac) |
| self.assertEqual(ether.dst, self.pg0.remote_mac) |
| self.assertEqual(ipv6.src, dst) |
| self.assertEqual(ipv6.dst, self.pg0.remote_ip6) |
| self.assertEqual(icmp6types[icmpv6.type], "Echo Reply") |
| self.assertEqual(icmpv6.id, id) |
| self.assertEqual(icmpv6.seq, seq) |
| self.assertEqual(icmpv6.data, data) |
| |
| |
| class TestIPv6RD(TestIPv6ND): |
| """ IPv6 Router Discovery Test Case """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPv6RD, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPv6RD, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPv6RD, self).setUp() |
| |
| # create 2 pg interfaces |
| self.create_pg_interfaces(range(2)) |
| |
| self.interfaces = list(self.pg_interfaces) |
| |
| # setup all interfaces |
| for i in self.interfaces: |
| i.admin_up() |
| i.config_ip6() |
| |
| def tearDown(self): |
| for i in self.interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| super(TestIPv6RD, self).tearDown() |
| |
| def test_rd_send_router_solicitation(self): |
| """ Verify router solicitation packets """ |
| |
| count = 2 |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index, |
| mrc=count) |
| rx_list = self.pg1.get_capture(count, timeout=3) |
| self.assertEqual(len(rx_list), count) |
| for packet in rx_list: |
| self.assertEqual(packet.haslayer(IPv6), 1) |
| self.assertEqual(packet[IPv6].haslayer( |
| ICMPv6ND_RS), 1) |
| dst = ip6_normalize(packet[IPv6].dst) |
| dst2 = ip6_normalize("ff02::2") |
| self.assert_equal(dst, dst2) |
| src = ip6_normalize(packet[IPv6].src) |
| src2 = ip6_normalize(self.pg1.local_ip6_ll) |
| self.assert_equal(src, src2) |
| self.assertTrue( |
| bool(packet[ICMPv6ND_RS].haslayer( |
| ICMPv6NDOptSrcLLAddr))) |
| self.assert_equal( |
| packet[ICMPv6NDOptSrcLLAddr].lladdr, |
| self.pg1.local_mac) |
| |
| def verify_prefix_info(self, reported_prefix, prefix_option): |
| prefix = IPv6Network( |
| text_type(prefix_option.getfieldval("prefix") + |
| "/" + |
| text_type(prefix_option.getfieldval("prefixlen"))), |
| strict=False) |
| self.assert_equal(reported_prefix.prefix.network_address, |
| prefix.network_address) |
| L = prefix_option.getfieldval("L") |
| A = prefix_option.getfieldval("A") |
| option_flags = (L << 7) | (A << 6) |
| self.assert_equal(reported_prefix.flags, option_flags) |
| self.assert_equal(reported_prefix.valid_time, |
| prefix_option.getfieldval("validlifetime")) |
| self.assert_equal(reported_prefix.preferred_time, |
| prefix_option.getfieldval("preferredlifetime")) |
| |
| def test_rd_receive_router_advertisement(self): |
| """ Verify events triggered by received RA packets """ |
| |
| self.vapi.want_ip6_ra_events(enable=1) |
| |
| prefix_info_1 = ICMPv6NDOptPrefixInfo( |
| prefix="1::2", |
| prefixlen=50, |
| validlifetime=200, |
| preferredlifetime=500, |
| L=1, |
| A=1, |
| ) |
| |
| prefix_info_2 = ICMPv6NDOptPrefixInfo( |
| prefix="7::4", |
| prefixlen=20, |
| validlifetime=70, |
| preferredlifetime=1000, |
| L=1, |
| A=0, |
| ) |
| |
| p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / |
| IPv6(dst=self.pg1.local_ip6_ll, |
| src=mk_ll_addr(self.pg1.remote_mac)) / |
| ICMPv6ND_RA() / |
| prefix_info_1 / |
| prefix_info_2) |
| self.pg1.add_stream([p]) |
| self.pg_start() |
| |
| ev = self.vapi.wait_for_event(10, "ip6_ra_event") |
| |
| self.assert_equal(ev.current_hop_limit, 0) |
| self.assert_equal(ev.flags, 8) |
| self.assert_equal(ev.router_lifetime_in_sec, 1800) |
| self.assert_equal(ev.neighbor_reachable_time_in_msec, 0) |
| self.assert_equal( |
| ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0) |
| |
| self.assert_equal(ev.n_prefixes, 2) |
| |
| self.verify_prefix_info(ev.prefixes[0], prefix_info_1) |
| self.verify_prefix_info(ev.prefixes[1], prefix_info_2) |
| |
| |
| class TestIPv6RDControlPlane(TestIPv6ND): |
| """ IPv6 Router Discovery Control Plane Test Case """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPv6RDControlPlane, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPv6RDControlPlane, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPv6RDControlPlane, self).setUp() |
| |
| # create 1 pg interface |
| self.create_pg_interfaces(range(1)) |
| |
| self.interfaces = list(self.pg_interfaces) |
| |
| # setup all interfaces |
| for i in self.interfaces: |
| i.admin_up() |
| i.config_ip6() |
| |
| def tearDown(self): |
| super(TestIPv6RDControlPlane, self).tearDown() |
| |
| @staticmethod |
| def create_ra_packet(pg, routerlifetime=None): |
| src_ip = pg.remote_ip6_ll |
| dst_ip = pg.local_ip6 |
| if routerlifetime is not None: |
| ra = ICMPv6ND_RA(routerlifetime=routerlifetime) |
| else: |
| ra = ICMPv6ND_RA() |
| p = (Ether(dst=pg.local_mac, src=pg.remote_mac) / |
| IPv6(dst=dst_ip, src=src_ip) / ra) |
| return p |
| |
| @staticmethod |
| def get_default_routes(fib): |
| list = [] |
| for entry in fib: |
| if entry.route.prefix.prefixlen == 0: |
| for path in entry.route.paths: |
| if path.sw_if_index != 0xFFFFFFFF: |
| defaut_route = {} |
| defaut_route['sw_if_index'] = path.sw_if_index |
| defaut_route['next_hop'] = path.nh.address.ip6 |
| list.append(defaut_route) |
| return list |
| |
| @staticmethod |
| def get_interface_addresses(fib, pg): |
| list = [] |
| for entry in fib: |
| if entry.route.prefix.prefixlen == 128: |
| path = entry.route.paths[0] |
| if path.sw_if_index == pg.sw_if_index: |
| list.append(str(entry.route.prefix.network_address)) |
| return list |
| |
| def wait_for_no_default_route(self, n_tries=50, s_time=1): |
| while (n_tries): |
| fib = self.vapi.ip_route_dump(0, True) |
| default_routes = self.get_default_routes(fib) |
| if 0 == len(default_routes): |
| return True |
| n_tries = n_tries - 1 |
| self.sleep(s_time) |
| |
| return False |
| |
| def test_all(self): |
| """ Test handling of SLAAC addresses and default routes """ |
| |
| fib = self.vapi.ip_route_dump(0, True) |
| default_routes = self.get_default_routes(fib) |
| initial_addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| self.assertEqual(default_routes, []) |
| router_address = IPv6Address(text_type(self.pg0.remote_ip6_ll)) |
| |
| self.vapi.ip6_nd_address_autoconfig(self.pg0.sw_if_index, 1, 1) |
| |
| self.sleep(0.1) |
| |
| # send RA |
| packet = (self.create_ra_packet( |
| self.pg0) / ICMPv6NDOptPrefixInfo( |
| prefix="1::", |
| prefixlen=64, |
| validlifetime=2, |
| preferredlifetime=2, |
| L=1, |
| A=1, |
| ) / ICMPv6NDOptPrefixInfo( |
| prefix="7::", |
| prefixlen=20, |
| validlifetime=1500, |
| preferredlifetime=1000, |
| L=1, |
| A=0, |
| )) |
| self.pg0.add_stream([packet]) |
| self.pg_start() |
| |
| self.sleep_on_vpp_time(0.1) |
| |
| fib = self.vapi.ip_route_dump(0, True) |
| |
| # check FIB for new address |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| new_addresses = addresses.difference(initial_addresses) |
| self.assertEqual(len(new_addresses), 1) |
| prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)), |
| strict=False) |
| self.assertEqual(prefix, IPv6Network(text_type('1::/20'))) |
| |
| # check FIB for new default route |
| default_routes = self.get_default_routes(fib) |
| self.assertEqual(len(default_routes), 1) |
| dr = default_routes[0] |
| self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index) |
| self.assertEqual(dr['next_hop'], router_address) |
| |
| # send RA to delete default route |
| packet = self.create_ra_packet(self.pg0, routerlifetime=0) |
| self.pg0.add_stream([packet]) |
| self.pg_start() |
| |
| self.sleep_on_vpp_time(0.1) |
| |
| # check that default route is deleted |
| fib = self.vapi.ip_route_dump(0, True) |
| default_routes = self.get_default_routes(fib) |
| self.assertEqual(len(default_routes), 0) |
| |
| self.sleep_on_vpp_time(0.1) |
| |
| # send RA |
| packet = self.create_ra_packet(self.pg0) |
| self.pg0.add_stream([packet]) |
| self.pg_start() |
| |
| self.sleep_on_vpp_time(0.1) |
| |
| # check FIB for new default route |
| fib = self.vapi.ip_route_dump(0, True) |
| default_routes = self.get_default_routes(fib) |
| self.assertEqual(len(default_routes), 1) |
| dr = default_routes[0] |
| self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index) |
| self.assertEqual(dr['next_hop'], router_address) |
| |
| # send RA, updating router lifetime to 1s |
| packet = self.create_ra_packet(self.pg0, 1) |
| self.pg0.add_stream([packet]) |
| self.pg_start() |
| |
| self.sleep_on_vpp_time(0.1) |
| |
| # check that default route still exists |
| fib = self.vapi.ip_route_dump(0, True) |
| default_routes = self.get_default_routes(fib) |
| self.assertEqual(len(default_routes), 1) |
| dr = default_routes[0] |
| self.assertEqual(dr['sw_if_index'], self.pg0.sw_if_index) |
| self.assertEqual(dr['next_hop'], router_address) |
| |
| self.sleep_on_vpp_time(1) |
| |
| # check that default route is deleted |
| self.assertTrue(self.wait_for_no_default_route()) |
| |
| # check FIB still contains the SLAAC address |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| new_addresses = addresses.difference(initial_addresses) |
| |
| self.assertEqual(len(new_addresses), 1) |
| prefix = IPv6Network(text_type("%s/%d" % (list(new_addresses)[0], 20)), |
| strict=False) |
| self.assertEqual(prefix, IPv6Network(text_type('1::/20'))) |
| |
| self.sleep_on_vpp_time(1) |
| |
| # check that SLAAC address is deleted |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| new_addresses = addresses.difference(initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| |
| class IPv6NDProxyTest(TestIPv6ND): |
| """ IPv6 ND ProxyTest Case """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(IPv6NDProxyTest, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(IPv6NDProxyTest, cls).tearDownClass() |
| |
| def setUp(self): |
| super(IPv6NDProxyTest, self).setUp() |
| |
| # create 3 pg interfaces |
| self.create_pg_interfaces(range(3)) |
| |
| # pg0 is the master interface, with the configured subnet |
| self.pg0.admin_up() |
| self.pg0.config_ip6() |
| self.pg0.resolve_ndp() |
| |
| self.pg1.ip6_enable() |
| self.pg2.ip6_enable() |
| |
| def tearDown(self): |
| super(IPv6NDProxyTest, self).tearDown() |
| |
| def test_nd_proxy(self): |
| """ IPv6 Proxy ND """ |
| |
| # |
| # Generate some hosts in the subnet that we are proxying |
| # |
| self.pg0.generate_remote_hosts(8) |
| |
| nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6)) |
| d = inet_ntop(AF_INET6, nsma) |
| |
| # |
| # Send an NS for one of those remote hosts on one of the proxy links |
| # expect no response since it's from an address that is not |
| # on the link that has the prefix configured |
| # |
| ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) / |
| IPv6(dst=d, |
| src=self.pg0._remote_hosts[2].ip6) / |
| ICMPv6ND_NS(tgt=self.pg0.local_ip6) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0._remote_hosts[2].mac)) |
| |
| self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS") |
| |
| # |
| # Add proxy support for the host |
| # |
| self.vapi.ip6nd_proxy_add_del( |
| is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6), |
| sw_if_index=self.pg1.sw_if_index) |
| |
| # |
| # try that NS again. this time we expect an NA back |
| # |
| self.send_and_expect_na(self.pg1, ns_pg1, |
| "NS to proxy entry", |
| dst_ip=self.pg0._remote_hosts[2].ip6, |
| tgt_ip=self.pg0.local_ip6) |
| |
| # |
| # ... and that we have an entry in the ND cache |
| # |
| self.assertTrue(find_nbr(self, |
| self.pg1.sw_if_index, |
| self.pg0._remote_hosts[2].ip6)) |
| |
| # |
| # ... and we can route traffic to it |
| # |
| t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| IPv6(dst=self.pg0._remote_hosts[2].ip6, |
| src=self.pg0.remote_ip6) / |
| inet6.UDP(sport=10000, dport=20000) / |
| Raw(b'\xa5' * 100)) |
| |
| self.pg0.add_stream(t) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = self.pg1.get_capture(1) |
| rx = rx[0] |
| |
| self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac) |
| self.assertEqual(rx[Ether].src, self.pg1.local_mac) |
| |
| self.assertEqual(rx[IPv6].src, |
| t[IPv6].src) |
| self.assertEqual(rx[IPv6].dst, |
| t[IPv6].dst) |
| |
| # |
| # Test we proxy for the host on the main interface |
| # |
| ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) / |
| IPv6(dst=d, src=self.pg0.remote_ip6) / |
| ICMPv6ND_NS( |
| tgt=self.pg0._remote_hosts[2].ip6) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0.remote_mac)) |
| |
| self.send_and_expect_na(self.pg0, ns_pg0, |
| "NS to proxy entry on main", |
| tgt_ip=self.pg0._remote_hosts[2].ip6, |
| dst_ip=self.pg0.remote_ip6) |
| |
| # |
| # Setup and resolve proxy for another host on another interface |
| # |
| ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) / |
| IPv6(dst=d, |
| src=self.pg0._remote_hosts[3].ip6) / |
| ICMPv6ND_NS(tgt=self.pg0.local_ip6) / |
| ICMPv6NDOptSrcLLAddr( |
| lladdr=self.pg0._remote_hosts[2].mac)) |
| |
| self.vapi.ip6nd_proxy_add_del( |
| is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6), |
| sw_if_index=self.pg2.sw_if_index) |
| |
| self.send_and_expect_na(self.pg2, ns_pg2, |
| "NS to proxy entry other interface", |
| dst_ip=self.pg0._remote_hosts[3].ip6, |
| tgt_ip=self.pg0.local_ip6) |
| |
| self.assertTrue(find_nbr(self, |
| self.pg2.sw_if_index, |
| self.pg0._remote_hosts[3].ip6)) |
| |
| # |
| # hosts can communicate. pg2->pg1 |
| # |
| t2 = (Ether(dst=self.pg2.local_mac, |
| src=self.pg0.remote_hosts[3].mac) / |
| IPv6(dst=self.pg0._remote_hosts[2].ip6, |
| src=self.pg0._remote_hosts[3].ip6) / |
| inet6.UDP(sport=10000, dport=20000) / |
| Raw(b'\xa5' * 100)) |
| |
| self.pg2.add_stream(t2) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = self.pg1.get_capture(1) |
| rx = rx[0] |
| |
| self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac) |
| self.assertEqual(rx[Ether].src, self.pg1.local_mac) |
| |
| self.assertEqual(rx[IPv6].src, |
| t2[IPv6].src) |
| self.assertEqual(rx[IPv6].dst, |
| t2[IPv6].dst) |
| |
| # |
| # remove the proxy configs |
| # |
| self.vapi.ip6nd_proxy_add_del( |
| ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6), |
| sw_if_index=self.pg1.sw_if_index, is_add=0) |
| self.vapi.ip6nd_proxy_add_del( |
| ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6), |
| sw_if_index=self.pg2.sw_if_index, is_add=0) |
| |
| self.assertFalse(find_nbr(self, |
| self.pg2.sw_if_index, |
| self.pg0._remote_hosts[3].ip6)) |
| self.assertFalse(find_nbr(self, |
| self.pg1.sw_if_index, |
| self.pg0._remote_hosts[2].ip6)) |
| |
| # |
| # no longer proxy-ing... |
| # |
| self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured") |
| self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured") |
| self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured") |
| |
| # |
| # no longer forwarding. traffic generates NS out of the glean/main |
| # interface |
| # |
| self.pg2.add_stream(t2) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx = self.pg0.get_capture(1) |
| |
| self.assertTrue(rx[0].haslayer(ICMPv6ND_NS)) |
| |
| |
| class TestIPNull(VppTestCase): |
| """ IPv6 routes via NULL """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPNull, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPNull, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPNull, self).setUp() |
| |
| # create 2 pg interfaces |
| self.create_pg_interfaces(range(1)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| |
| def tearDown(self): |
| super(TestIPNull, self).tearDown() |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| def test_ip_null(self): |
| """ IP NULL route """ |
| |
| p = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=self.pg0.remote_ip6, dst="2001::1") / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| |
| # |
| # A route via IP NULL that will reply with ICMP unreachables |
| # |
| ip_unreach = VppIpRoute( |
| self, "2001::", 64, |
| [VppRoutePath("::", 0xffffffff, |
| type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH)]) |
| ip_unreach.add_vpp_config() |
| |
| self.pg0.add_stream(p) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx = self.pg0.get_capture(1) |
| rx = rx[0] |
| icmp = rx[ICMPv6DestUnreach] |
| |
| # 0 = "No route to destination" |
| self.assertEqual(icmp.code, 0) |
| |
| # ICMP is rate limited. pause a bit |
| self.sleep(1) |
| |
| # |
| # A route via IP NULL that will reply with ICMP prohibited |
| # |
| ip_prohibit = VppIpRoute( |
| self, "2001::1", 128, |
| [VppRoutePath("::", 0xffffffff, |
| type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT)]) |
| ip_prohibit.add_vpp_config() |
| |
| self.pg0.add_stream(p) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx = self.pg0.get_capture(1) |
| rx = rx[0] |
| icmp = rx[ICMPv6DestUnreach] |
| |
| # 1 = "Communication with destination administratively prohibited" |
| self.assertEqual(icmp.code, 1) |
| |
| |
| class TestIPDisabled(VppTestCase): |
| """ IPv6 disabled """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPDisabled, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPDisabled, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPDisabled, self).setUp() |
| |
| # create 2 pg interfaces |
| self.create_pg_interfaces(range(2)) |
| |
| # PG0 is IP enabled |
| self.pg0.admin_up() |
| self.pg0.config_ip6() |
| self.pg0.resolve_ndp() |
| |
| # PG 1 is not IP enabled |
| self.pg1.admin_up() |
| |
| def tearDown(self): |
| super(TestIPDisabled, self).tearDown() |
| for i in self.pg_interfaces: |
| i.unconfig_ip4() |
| i.admin_down() |
| |
| def test_ip_disabled(self): |
| """ IP Disabled """ |
| |
| MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t |
| MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t |
| # |
| # An (S,G). |
| # one accepting interface, pg0, 2 forwarding interfaces |
| # |
| route_ff_01 = VppIpMRoute( |
| self, |
| "::", |
| "ffef::1", 128, |
| MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, |
| [VppMRoutePath(self.pg1.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT), |
| VppMRoutePath(self.pg0.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD)]) |
| route_ff_01.add_vpp_config() |
| |
| pu = (Ether(src=self.pg1.remote_mac, |
| dst=self.pg1.local_mac) / |
| IPv6(src="2001::1", dst=self.pg0.remote_ip6) / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| pm = (Ether(src=self.pg1.remote_mac, |
| dst=self.pg1.local_mac) / |
| IPv6(src="2001::1", dst="ffef::1") / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| |
| # |
| # PG1 does not forward IP traffic |
| # |
| self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled") |
| self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled") |
| |
| # |
| # IP enable PG1 |
| # |
| self.pg1.config_ip6() |
| |
| # |
| # Now we get packets through |
| # |
| self.pg1.add_stream(pu) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = self.pg0.get_capture(1) |
| |
| self.pg1.add_stream(pm) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| rx = self.pg0.get_capture(1) |
| |
| # |
| # Disable PG1 |
| # |
| self.pg1.unconfig_ip6() |
| |
| # |
| # PG1 does not forward IP traffic |
| # |
| self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled") |
| self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled") |
| |
| |
| class TestIP6LoadBalance(VppTestCase): |
| """ IPv6 Load-Balancing """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIP6LoadBalance, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIP6LoadBalance, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIP6LoadBalance, self).setUp() |
| |
| self.create_pg_interfaces(range(5)) |
| |
| mpls_tbl = VppMplsTable(self, 0) |
| mpls_tbl.add_vpp_config() |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| i.enable_mpls() |
| |
| def tearDown(self): |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| i.disable_mpls() |
| super(TestIP6LoadBalance, self).tearDown() |
| |
| def pg_send(self, input, pkts): |
| self.vapi.cli("clear trace") |
| input.add_stream(pkts) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| def send_and_expect_load_balancing(self, input, pkts, outputs): |
| self.pg_send(input, pkts) |
| rxs = [] |
| for oo in outputs: |
| rx = oo._get_capture(1) |
| self.assertNotEqual(0, len(rx)) |
| rxs.append(rx) |
| return rxs |
| |
| def send_and_expect_one_itf(self, input, pkts, itf): |
| self.pg_send(input, pkts) |
| rx = itf.get_capture(len(pkts)) |
| |
| def test_ip6_load_balance(self): |
| """ IPv6 Load-Balancing """ |
| |
| # |
| # An array of packets that differ only in the destination port |
| # - IP only |
| # - MPLS EOS |
| # - MPLS non-EOS |
| # - MPLS non-EOS with an entropy label |
| # |
| port_ip_pkts = [] |
| port_mpls_pkts = [] |
| port_mpls_neos_pkts = [] |
| port_ent_pkts = [] |
| |
| # |
| # An array of packets that differ only in the source address |
| # |
| src_ip_pkts = [] |
| src_mpls_pkts = [] |
| |
| for ii in range(NUM_PKTS): |
| port_ip_hdr = ( |
| IPv6(dst="3000::1", src="3000:1::1") / |
| inet6.UDP(sport=1234, dport=1234 + ii) / |
| Raw(b'\xa5' * 100)) |
| port_ip_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| port_ip_hdr)) |
| port_mpls_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| MPLS(label=66, ttl=2) / |
| port_ip_hdr)) |
| port_mpls_neos_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| MPLS(label=67, ttl=2) / |
| MPLS(label=77, ttl=2) / |
| port_ip_hdr)) |
| port_ent_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| MPLS(label=67, ttl=2) / |
| MPLS(label=14, ttl=2) / |
| MPLS(label=999, ttl=2) / |
| port_ip_hdr)) |
| src_ip_hdr = ( |
| IPv6(dst="3000::1", src="3000:1::%d" % ii) / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| src_ip_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| src_ip_hdr)) |
| src_mpls_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| MPLS(label=66, ttl=2) / |
| src_ip_hdr)) |
| |
| # |
| # A route for the IP packets |
| # |
| route_3000_1 = VppIpRoute(self, "3000::1", 128, |
| [VppRoutePath(self.pg1.remote_ip6, |
| self.pg1.sw_if_index), |
| VppRoutePath(self.pg2.remote_ip6, |
| self.pg2.sw_if_index)]) |
| route_3000_1.add_vpp_config() |
| |
| # |
| # a local-label for the EOS packets |
| # |
| binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1) |
| binding.add_vpp_config() |
| |
| # |
| # An MPLS route for the non-EOS packets |
| # |
| route_67 = VppMplsRoute(self, 67, 0, |
| [VppRoutePath(self.pg1.remote_ip6, |
| self.pg1.sw_if_index, |
| labels=[67]), |
| VppRoutePath(self.pg2.remote_ip6, |
| self.pg2.sw_if_index, |
| labels=[67])]) |
| route_67.add_vpp_config() |
| |
| # |
| # inject the packet on pg0 - expect load-balancing across the 2 paths |
| # - since the default hash config is to use IP src,dst and port |
| # src,dst |
| # We are not going to ensure equal amounts of packets across each link, |
| # since the hash algorithm is statistical and therefore this can never |
| # be guaranteed. But with 64 different packets we do expect some |
| # balancing. So instead just ensure there is traffic on each link. |
| # |
| rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, |
| [self.pg1, self.pg2]) |
| n_ip_pg0 = len(rx[0]) |
| self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, |
| [self.pg1, self.pg2]) |
| self.send_and_expect_load_balancing(self.pg0, port_mpls_pkts, |
| [self.pg1, self.pg2]) |
| self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, |
| [self.pg1, self.pg2]) |
| rx = self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts, |
| [self.pg1, self.pg2]) |
| n_mpls_pg0 = len(rx[0]) |
| |
| # |
| # change the router ID and expect the distribution changes |
| # |
| self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111) |
| |
| rx = self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, |
| [self.pg1, self.pg2]) |
| self.assertNotEqual(n_ip_pg0, len(rx[0])) |
| |
| rx = self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, |
| [self.pg1, self.pg2]) |
| self.assertNotEqual(n_mpls_pg0, len(rx[0])) |
| |
| # |
| # The packets with Entropy label in should not load-balance, |
| # since the Entropy value is fixed. |
| # |
| self.send_and_expect_one_itf(self.pg0, port_ent_pkts, self.pg1) |
| |
| # |
| # change the flow hash config so it's only IP src,dst |
| # - now only the stream with differing source address will |
| # load-balance |
| # |
| self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, proto=1, |
| sport=0, dport=0, is_ipv6=1) |
| |
| self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, |
| [self.pg1, self.pg2]) |
| self.send_and_expect_load_balancing(self.pg0, src_mpls_pkts, |
| [self.pg1, self.pg2]) |
| self.send_and_expect_one_itf(self.pg0, port_ip_pkts, self.pg2) |
| |
| # |
| # change the flow hash config back to defaults |
| # |
| self.vapi.set_ip_flow_hash(vrf_id=0, src=1, dst=1, sport=1, dport=1, |
| proto=1, is_ipv6=1) |
| |
| # |
| # Recursive prefixes |
| # - testing that 2 stages of load-balancing occurs and there is no |
| # polarisation (i.e. only 2 of 4 paths are used) |
| # |
| port_pkts = [] |
| src_pkts = [] |
| |
| for ii in range(257): |
| port_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(dst="4000::1", |
| src="4000:1::1") / |
| inet6.UDP(sport=1234, |
| dport=1234 + ii) / |
| Raw(b'\xa5' * 100))) |
| src_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(dst="4000::1", |
| src="4000:1::%d" % ii) / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100))) |
| |
| route_3000_2 = VppIpRoute(self, "3000::2", 128, |
| [VppRoutePath(self.pg3.remote_ip6, |
| self.pg3.sw_if_index), |
| VppRoutePath(self.pg4.remote_ip6, |
| self.pg4.sw_if_index)]) |
| route_3000_2.add_vpp_config() |
| |
| route_4000_1 = VppIpRoute(self, "4000::1", 128, |
| [VppRoutePath("3000::1", |
| 0xffffffff), |
| VppRoutePath("3000::2", |
| 0xffffffff)]) |
| route_4000_1.add_vpp_config() |
| |
| # |
| # inject the packet on pg0 - expect load-balancing across all 4 paths |
| # |
| self.vapi.cli("clear trace") |
| self.send_and_expect_load_balancing(self.pg0, port_pkts, |
| [self.pg1, self.pg2, |
| self.pg3, self.pg4]) |
| self.send_and_expect_load_balancing(self.pg0, src_pkts, |
| [self.pg1, self.pg2, |
| self.pg3, self.pg4]) |
| |
| # |
| # Recursive prefixes |
| # - testing that 2 stages of load-balancing no choices |
| # |
| port_pkts = [] |
| |
| for ii in range(257): |
| port_pkts.append((Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(dst="6000::1", |
| src="6000:1::1") / |
| inet6.UDP(sport=1234, |
| dport=1234 + ii) / |
| Raw(b'\xa5' * 100))) |
| |
| route_5000_2 = VppIpRoute(self, "5000::2", 128, |
| [VppRoutePath(self.pg3.remote_ip6, |
| self.pg3.sw_if_index)]) |
| route_5000_2.add_vpp_config() |
| |
| route_6000_1 = VppIpRoute(self, "6000::1", 128, |
| [VppRoutePath("5000::2", |
| 0xffffffff)]) |
| route_6000_1.add_vpp_config() |
| |
| # |
| # inject the packet on pg0 - expect load-balancing across all 4 paths |
| # |
| self.vapi.cli("clear trace") |
| self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3) |
| |
| |
| class IP6PuntSetup(object): |
| """ Setup for IPv6 Punt Police/Redirect """ |
| |
| def punt_setup(self): |
| self.create_pg_interfaces(range(4)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| |
| self.pkt = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=self.pg0.remote_ip6, |
| dst=self.pg0.local_ip6) / |
| inet6.TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| |
| def punt_teardown(self): |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| |
| class TestIP6Punt(IP6PuntSetup, VppTestCase): |
| """ IPv6 Punt Police/Redirect """ |
| |
| def setUp(self): |
| super(TestIP6Punt, self).setUp() |
| super(TestIP6Punt, self).punt_setup() |
| |
| def tearDown(self): |
| super(TestIP6Punt, self).punt_teardown() |
| super(TestIP6Punt, self).tearDown() |
| |
| def test_ip_punt(self): |
| """ IP6 punt police and redirect """ |
| |
| pkts = self.pkt * 1025 |
| |
| # |
| # Configure a punt redirect via pg1. |
| # |
| nh_addr = self.pg1.remote_ip6 |
| ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index, |
| self.pg1.sw_if_index, nh_addr) |
| ip_punt_redirect.add_vpp_config() |
| |
| self.send_and_expect(self.pg0, pkts, self.pg1) |
| |
| # |
| # add a policer |
| # |
| policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1) |
| policer.add_vpp_config() |
| ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, |
| is_ip6=True) |
| ip_punt_policer.add_vpp_config() |
| |
| self.vapi.cli("clear trace") |
| self.pg0.add_stream(pkts) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| # |
| # the number of packet received should be greater than 0, |
| # but not equal to the number sent, since some were policed |
| # |
| rx = self.pg1._get_capture(1) |
| self.assertGreater(len(rx), 0) |
| self.assertLess(len(rx), len(pkts)) |
| |
| # |
| # remove the policer. back to full rx |
| # |
| ip_punt_policer.remove_vpp_config() |
| policer.remove_vpp_config() |
| self.send_and_expect(self.pg0, pkts, self.pg1) |
| |
| # |
| # remove the redirect. expect full drop. |
| # |
| ip_punt_redirect.remove_vpp_config() |
| self.send_and_assert_no_replies(self.pg0, pkts, |
| "IP no punt config") |
| |
| # |
| # Add a redirect that is not input port selective |
| # |
| ip_punt_redirect = VppIpPuntRedirect(self, 0xffffffff, |
| self.pg1.sw_if_index, nh_addr) |
| ip_punt_redirect.add_vpp_config() |
| self.send_and_expect(self.pg0, pkts, self.pg1) |
| ip_punt_redirect.remove_vpp_config() |
| |
| def test_ip_punt_dump(self): |
| """ IP6 punt redirect dump""" |
| |
| # |
| # Configure a punt redirects |
| # |
| nh_address = self.pg3.remote_ip6 |
| ipr_03 = VppIpPuntRedirect(self, self.pg0.sw_if_index, |
| self.pg3.sw_if_index, nh_address) |
| ipr_13 = VppIpPuntRedirect(self, self.pg1.sw_if_index, |
| self.pg3.sw_if_index, nh_address) |
| ipr_23 = VppIpPuntRedirect(self, self.pg2.sw_if_index, |
| self.pg3.sw_if_index, '0::0') |
| ipr_03.add_vpp_config() |
| ipr_13.add_vpp_config() |
| ipr_23.add_vpp_config() |
| |
| # |
| # Dump pg0 punt redirects |
| # |
| self.assertTrue(ipr_03.query_vpp_config()) |
| self.assertTrue(ipr_13.query_vpp_config()) |
| self.assertTrue(ipr_23.query_vpp_config()) |
| |
| # |
| # Dump punt redirects for all interfaces |
| # |
| punts = self.vapi.ip_punt_redirect_dump(0xffffffff, is_ipv6=1) |
| self.assertEqual(len(punts), 3) |
| for p in punts: |
| self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index) |
| self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6) |
| self.assertEqual(str(punts[2].punt.nh), '::') |
| |
| |
| class TestIP6PuntHandoff(IP6PuntSetup, VppTestCase): |
| """ IPv6 Punt Police/Redirect """ |
| worker_config = "workers 2" |
| |
| def setUp(self): |
| super(TestIP6PuntHandoff, self).setUp() |
| super(TestIP6PuntHandoff, self).punt_setup() |
| |
| def tearDown(self): |
| super(TestIP6PuntHandoff, self).punt_teardown() |
| super(TestIP6PuntHandoff, self).tearDown() |
| |
| def test_ip_punt(self): |
| """ IP6 punt policer thread handoff """ |
| pkts = self.pkt * NUM_PKTS |
| |
| # |
| # Configure a punt redirect via pg1. |
| # |
| nh_addr = self.pg1.remote_ip6 |
| ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index, |
| self.pg1.sw_if_index, nh_addr) |
| ip_punt_redirect.add_vpp_config() |
| |
| action_tx = PolicerAction( |
| VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT, |
| 0) |
| # |
| # This policer drops no packets, we are just |
| # testing that they get to the right thread. |
| # |
| policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, 1, |
| 0, 0, False, action_tx, action_tx, action_tx) |
| policer.add_vpp_config() |
| ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, |
| is_ip6=True) |
| ip_punt_policer.add_vpp_config() |
| |
| for worker in [0, 1]: |
| self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker) |
| if worker == 0: |
| self.logger.debug(self.vapi.cli("show trace max 100")) |
| |
| # |
| # Clean up |
| # |
| ip_punt_policer.remove_vpp_config() |
| policer.remove_vpp_config() |
| ip_punt_redirect.remove_vpp_config() |
| |
| |
| class TestIPDeag(VppTestCase): |
| """ IPv6 Deaggregate Routes """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPDeag, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPDeag, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPDeag, self).setUp() |
| |
| self.create_pg_interfaces(range(3)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| |
| def tearDown(self): |
| super(TestIPDeag, self).tearDown() |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| def test_ip_deag(self): |
| """ IP Deag Routes """ |
| |
| # |
| # Create a table to be used for: |
| # 1 - another destination address lookup |
| # 2 - a source address lookup |
| # |
| table_dst = VppIpTable(self, 1, is_ip6=1) |
| table_src = VppIpTable(self, 2, is_ip6=1) |
| table_dst.add_vpp_config() |
| table_src.add_vpp_config() |
| |
| # |
| # Add a route in the default table to point to a deag/ |
| # second lookup in each of these tables |
| # |
| route_to_dst = VppIpRoute(self, "1::1", 128, |
| [VppRoutePath("::", |
| 0xffffffff, |
| nh_table_id=1)]) |
| route_to_src = VppIpRoute( |
| self, "1::2", 128, |
| [VppRoutePath("::", |
| 0xffffffff, |
| nh_table_id=2, |
| type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP)]) |
| |
| route_to_dst.add_vpp_config() |
| route_to_src.add_vpp_config() |
| |
| # |
| # packets to these destination are dropped, since they'll |
| # hit the respective default routes in the second table |
| # |
| p_dst = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src="5::5", dst="1::1") / |
| inet6.TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| p_src = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src="2::2", dst="1::2") / |
| inet6.TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| pkts_dst = p_dst * 257 |
| pkts_src = p_src * 257 |
| |
| self.send_and_assert_no_replies(self.pg0, pkts_dst, |
| "IP in dst table") |
| self.send_and_assert_no_replies(self.pg0, pkts_src, |
| "IP in src table") |
| |
| # |
| # add a route in the dst table to forward via pg1 |
| # |
| route_in_dst = VppIpRoute(self, "1::1", 128, |
| [VppRoutePath(self.pg1.remote_ip6, |
| self.pg1.sw_if_index)], |
| table_id=1) |
| route_in_dst.add_vpp_config() |
| |
| self.send_and_expect(self.pg0, pkts_dst, self.pg1) |
| |
| # |
| # add a route in the src table to forward via pg2 |
| # |
| route_in_src = VppIpRoute(self, "2::2", 128, |
| [VppRoutePath(self.pg2.remote_ip6, |
| self.pg2.sw_if_index)], |
| table_id=2) |
| route_in_src.add_vpp_config() |
| self.send_and_expect(self.pg0, pkts_src, self.pg2) |
| |
| # |
| # loop in the lookup DP |
| # |
| route_loop = VppIpRoute(self, "3::3", 128, |
| [VppRoutePath("::", |
| 0xffffffff)]) |
| route_loop.add_vpp_config() |
| |
| p_l = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src="3::4", dst="3::3") / |
| inet6.TCP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| |
| self.send_and_assert_no_replies(self.pg0, p_l * 257, |
| "IP lookup loop") |
| |
| |
| class TestIP6Input(VppTestCase): |
| """ IPv6 Input Exception Test Cases """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIP6Input, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIP6Input, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIP6Input, self).setUp() |
| |
| self.create_pg_interfaces(range(2)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.resolve_ndp() |
| |
| def tearDown(self): |
| super(TestIP6Input, self).tearDown() |
| for i in self.pg_interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| |
| def test_ip_input_icmp_reply(self): |
| """ IP6 Input Exception - Return ICMP (3,0) """ |
| # |
| # hop limit - ICMP replies |
| # |
| p_version = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=self.pg0.remote_ip6, |
| dst=self.pg1.remote_ip6, |
| hlim=1) / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| |
| rx = self.send_and_expect(self.pg0, p_version * NUM_PKTS, self.pg0) |
| rx = rx[0] |
| icmp = rx[ICMPv6TimeExceeded] |
| |
| # 0: "hop limit exceeded in transit", |
| self.assertEqual((icmp.type, icmp.code), (3, 0)) |
| |
| icmpv6_data = '\x0a' * 18 |
| all_0s = "::" |
| all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF" |
| |
| @parameterized.expand([ |
| # Name, src, dst, l4proto, msg, timeout |
| ("src='iface', dst='iface'", None, None, |
| inet6.UDP(sport=1234, dport=1234), "funky version", None), |
| ("src='All 0's', dst='iface'", all_0s, None, |
| ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1), |
| ("src='iface', dst='All 0's'", None, all_0s, |
| ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1), |
| ("src='All 1's', dst='iface'", all_1s, None, |
| ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1), |
| ("src='iface', dst='All 1's'", None, all_1s, |
| ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1), |
| ("src='All 1's', dst='All 1's'", all_1s, all_1s, |
| ICMPv6EchoRequest(id=0xb, seq=5, data=icmpv6_data), None, 0.1), |
| |
| ]) |
| def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout): |
| |
| self._testMethodDoc = 'IPv6 Input Exception - %s' % name |
| |
| p_version = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=src or self.pg0.remote_ip6, |
| dst=dst or self.pg1.remote_ip6, |
| version=3) / |
| l4 / |
| Raw(b'\xa5' * 100)) |
| |
| self.send_and_assert_no_replies(self.pg0, p_version * NUM_PKTS, |
| remark=msg or "", |
| timeout=timeout) |
| |
| def test_hop_by_hop(self): |
| """ Hop-by-hop header test """ |
| |
| p = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) / |
| IPv6ExtHdrHopByHop() / |
| inet6.UDP(sport=1234, dport=1234) / |
| Raw(b'\xa5' * 100)) |
| |
| self.pg0.add_stream(p) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| |
| class TestIPReplace(VppTestCase): |
| """ IPv6 Table Replace """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIPReplace, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIPReplace, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIPReplace, self).setUp() |
| |
| self.create_pg_interfaces(range(4)) |
| |
| table_id = 1 |
| self.tables = [] |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| i.config_ip6() |
| i.generate_remote_hosts(2) |
| self.tables.append(VppIpTable(self, table_id, |
| True).add_vpp_config()) |
| table_id += 1 |
| |
| def tearDown(self): |
| super(TestIPReplace, self).tearDown() |
| for i in self.pg_interfaces: |
| i.admin_down() |
| i.unconfig_ip6() |
| |
| def test_replace(self): |
| """ IP Table Replace """ |
| |
| MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t |
| MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t |
| N_ROUTES = 20 |
| links = [self.pg0, self.pg1, self.pg2, self.pg3] |
| routes = [[], [], [], []] |
| |
| # the sizes of 'empty' tables |
| for t in self.tables: |
| self.assertEqual(len(t.dump()), 2) |
| self.assertEqual(len(t.mdump()), 5) |
| |
| # load up the tables with some routes |
| for ii, t in enumerate(self.tables): |
| for jj in range(1, N_ROUTES): |
| uni = VppIpRoute( |
| self, "2001::%d" % jj if jj != 0 else "2001::", 128, |
| [VppRoutePath(links[ii].remote_hosts[0].ip6, |
| links[ii].sw_if_index), |
| VppRoutePath(links[ii].remote_hosts[1].ip6, |
| links[ii].sw_if_index)], |
| table_id=t.table_id).add_vpp_config() |
| multi = VppIpMRoute( |
| self, "::", |
| "ff:2001::%d" % jj, 128, |
| MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, |
| [VppMRoutePath(self.pg0.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT, |
| proto=FibPathProto.FIB_PATH_NH_PROTO_IP6), |
| VppMRoutePath(self.pg1.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, |
| proto=FibPathProto.FIB_PATH_NH_PROTO_IP6), |
| VppMRoutePath(self.pg2.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, |
| proto=FibPathProto.FIB_PATH_NH_PROTO_IP6), |
| VppMRoutePath(self.pg3.sw_if_index, |
| MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, |
| proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)], |
| table_id=t.table_id).add_vpp_config() |
| routes[ii].append({'uni': uni, |
| 'multi': multi}) |
| |
| # |
| # replace the tables a few times |
| # |
| for kk in range(3): |
| # replace each table |
| for t in self.tables: |
| t.replace_begin() |
| |
| # all the routes are still there |
| for ii, t in enumerate(self.tables): |
| dump = t.dump() |
| mdump = t.mdump() |
| for r in routes[ii]: |
| self.assertTrue(find_route_in_dump(dump, r['uni'], t)) |
| self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t)) |
| |
| # redownload the even numbered routes |
| for ii, t in enumerate(self.tables): |
| for jj in range(0, N_ROUTES, 2): |
| routes[ii][jj]['uni'].add_vpp_config() |
| routes[ii][jj]['multi'].add_vpp_config() |
| |
| # signal each table converged |
| for t in self.tables: |
| t.replace_end() |
| |
| # we should find the even routes, but not the odd |
| for ii, t in enumerate(self.tables): |
| dump = t.dump() |
| mdump = t.mdump() |
| for jj in range(0, N_ROUTES, 2): |
| self.assertTrue(find_route_in_dump( |
| dump, routes[ii][jj]['uni'], t)) |
| self.assertTrue(find_mroute_in_dump( |
| mdump, routes[ii][jj]['multi'], t)) |
| for jj in range(1, N_ROUTES - 1, 2): |
| self.assertFalse(find_route_in_dump( |
| dump, routes[ii][jj]['uni'], t)) |
| self.assertFalse(find_mroute_in_dump( |
| mdump, routes[ii][jj]['multi'], t)) |
| |
| # reload all the routes |
| for ii, t in enumerate(self.tables): |
| for r in routes[ii]: |
| r['uni'].add_vpp_config() |
| r['multi'].add_vpp_config() |
| |
| # all the routes are still there |
| for ii, t in enumerate(self.tables): |
| dump = t.dump() |
| mdump = t.mdump() |
| for r in routes[ii]: |
| self.assertTrue(find_route_in_dump(dump, r['uni'], t)) |
| self.assertTrue(find_mroute_in_dump(mdump, r['multi'], t)) |
| |
| # |
| # finally flush the tables for good measure |
| # |
| for t in self.tables: |
| t.flush() |
| self.assertEqual(len(t.dump()), 2) |
| self.assertEqual(len(t.mdump()), 5) |
| |
| |
| class TestIP6Replace(VppTestCase): |
| """ IPv4 Interface Address Replace """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIP6Replace, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIP6Replace, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIP6Replace, self).setUp() |
| |
| self.create_pg_interfaces(range(4)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| |
| def tearDown(self): |
| super(TestIP6Replace, self).tearDown() |
| for i in self.pg_interfaces: |
| i.admin_down() |
| |
| def get_n_pfxs(self, intf): |
| return len(self.vapi.ip_address_dump(intf.sw_if_index, True)) |
| |
| def test_replace(self): |
| """ IP interface address replace """ |
| |
| intf_pfxs = [[], [], [], []] |
| |
| # add prefixes to each of the interfaces |
| for i in range(len(self.pg_interfaces)): |
| intf = self.pg_interfaces[i] |
| |
| # 2001:16:x::1/64 |
| addr = "2001:16:%d::1" % intf.sw_if_index |
| a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() |
| intf_pfxs[i].append(a) |
| |
| # 2001:16:x::2/64 - a different address in the same subnet as above |
| addr = "2001:16:%d::2" % intf.sw_if_index |
| a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() |
| intf_pfxs[i].append(a) |
| |
| # 2001:15:x::2/64 - a different address and subnet |
| addr = "2001:15:%d::2" % intf.sw_if_index |
| a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() |
| intf_pfxs[i].append(a) |
| |
| # a dump should n_address in it |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 3) |
| |
| # |
| # remove all the address thru a replace |
| # |
| self.vapi.sw_interface_address_replace_begin() |
| self.vapi.sw_interface_address_replace_end() |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 0) |
| |
| # |
| # add all the interface addresses back |
| # |
| for p in intf_pfxs: |
| for v in p: |
| v.add_vpp_config() |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 3) |
| |
| # |
| # replace again, but this time update/re-add the address on the first |
| # two interfaces |
| # |
| self.vapi.sw_interface_address_replace_begin() |
| |
| for p in intf_pfxs[:2]: |
| for v in p: |
| v.add_vpp_config() |
| |
| self.vapi.sw_interface_address_replace_end() |
| |
| # on the first two the address still exist, |
| # on the other two they do not |
| for intf in self.pg_interfaces[:2]: |
| self.assertEqual(self.get_n_pfxs(intf), 3) |
| for p in intf_pfxs[:2]: |
| for v in p: |
| self.assertTrue(v.query_vpp_config()) |
| for intf in self.pg_interfaces[2:]: |
| self.assertEqual(self.get_n_pfxs(intf), 0) |
| |
| # |
| # add all the interface addresses back on the last two |
| # |
| for p in intf_pfxs[2:]: |
| for v in p: |
| v.add_vpp_config() |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 3) |
| |
| # |
| # replace again, this time add different prefixes on all the interfaces |
| # |
| self.vapi.sw_interface_address_replace_begin() |
| |
| pfxs = [] |
| for intf in self.pg_interfaces: |
| # 2001:18:x::1/64 |
| addr = "2001:18:%d::1" % intf.sw_if_index |
| pfxs.append(VppIpInterfaceAddress(self, intf, addr, |
| 64).add_vpp_config()) |
| |
| self.vapi.sw_interface_address_replace_end() |
| |
| # only .18 should exist on each interface |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 1) |
| for pfx in pfxs: |
| self.assertTrue(pfx.query_vpp_config()) |
| |
| # |
| # remove everything |
| # |
| self.vapi.sw_interface_address_replace_begin() |
| self.vapi.sw_interface_address_replace_end() |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 0) |
| |
| # |
| # add prefixes to each interface. post-begin add the prefix from |
| # interface X onto interface Y. this would normally be an error |
| # since it would generate a 'duplicate address' warning. but in |
| # this case, since what is newly downloaded is sane, it's ok |
| # |
| for intf in self.pg_interfaces: |
| # 2001:18:x::1/64 |
| addr = "2001:18:%d::1" % intf.sw_if_index |
| VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() |
| |
| self.vapi.sw_interface_address_replace_begin() |
| |
| pfxs = [] |
| for intf in self.pg_interfaces: |
| # 2001:18:x::1/64 |
| addr = "2001:18:%d::1" % (intf.sw_if_index + 1) |
| pfxs.append(VppIpInterfaceAddress(self, intf, |
| addr, 64).add_vpp_config()) |
| |
| self.vapi.sw_interface_address_replace_end() |
| |
| self.logger.info(self.vapi.cli("sh int addr")) |
| |
| for intf in self.pg_interfaces: |
| self.assertEqual(self.get_n_pfxs(intf), 1) |
| for pfx in pfxs: |
| self.assertTrue(pfx.query_vpp_config()) |
| |
| |
| class TestIP6LinkLocal(VppTestCase): |
| """ IPv6 Link Local """ |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestIP6LinkLocal, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestIP6LinkLocal, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestIP6LinkLocal, self).setUp() |
| |
| self.create_pg_interfaces(range(2)) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| |
| def tearDown(self): |
| super(TestIP6LinkLocal, self).tearDown() |
| for i in self.pg_interfaces: |
| i.admin_down() |
| |
| def test_ip6_ll(self): |
| """ IPv6 Link Local """ |
| |
| # |
| # two APIs to add a link local address. |
| # 1 - just like any other prefix |
| # 2 - with the special set LL API |
| # |
| |
| # |
| # First with the API to set a 'normal' prefix |
| # |
| ll1 = "fe80:1::1" |
| ll2 = "fe80:2::2" |
| ll3 = "fe80:3::3" |
| |
| VppIpInterfaceAddress(self, self.pg0, ll1, 128).add_vpp_config() |
| |
| # |
| # should be able to ping the ll |
| # |
| p_echo_request_1 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=ll2, |
| dst=ll1) / |
| ICMPv6EchoRequest()) |
| |
| self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0) |
| |
| # |
| # change the link-local on pg0 |
| # |
| v_ll3 = VppIpInterfaceAddress(self, self.pg0, |
| ll3, 128).add_vpp_config() |
| |
| p_echo_request_3 = (Ether(src=self.pg0.remote_mac, |
| dst=self.pg0.local_mac) / |
| IPv6(src=ll2, |
| dst=ll3) / |
| ICMPv6EchoRequest()) |
| |
| self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0) |
| |
| # |
| # set a normal v6 prefix on the link |
| # |
| self.pg0.config_ip6() |
| |
| self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0) |
| |
| # the link-local cannot be removed |
| with self.vapi.assert_negative_api_retval(): |
| v_ll3.remove_vpp_config() |
| |
| # |
| # Use the specific link-local API on pg1 |
| # |
| VppIp6LinkLocalAddress(self, self.pg1, ll1).add_vpp_config() |
| self.send_and_expect(self.pg1, [p_echo_request_1], self.pg1) |
| |
| VppIp6LinkLocalAddress(self, self.pg1, ll3).add_vpp_config() |
| self.send_and_expect(self.pg1, [p_echo_request_3], self.pg1) |
| |
| |
| if __name__ == '__main__': |
| unittest.main(testRunner=VppTestRunner) |