#!/usr/bin/env python3 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 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 from util import ppp, ip6_normalize, mk_ll_addr from vpp_ip import DpoProto from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \ VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \ VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, FibPathProto, \ VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump from vpp_neighbor import find_nbr, VppNeighbor from vpp_pg_interface import is_ipv6_misc from vpp_sub_interface import VppSubInterface, VppDot1QSubint 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) 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 
/*
 * tunnel_dp.h: data-plane functions tunnels.
 *
 * Copyright (c) 2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef __TUNNEL_DP_H__
#define __TUNNEL_DP_H__

static_always_inline void
tunnel_encap_fixup_4o4 (tunnel_encap_decap_flags_t flags,
			const ip4_header_t * inner, ip4_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    ip4_header_set_dscp (outer, ip4_header_get_dscp (inner));
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
    ip4_header_set_ecn (outer, ip4_header_get_ecn (inner));
  if ((flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) &&
      ip4_header_get_df (inner))
    ip4_header_set_df (outer);
}

static_always_inline void
tunnel_encap_fixup_6o4 (tunnel_encap_decap_flags_t flags,
			const ip6_header_t * inner, ip4_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    ip4_header_set_dscp (outer, ip6_dscp_network_order (inner));
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
    ip4_header_set_ecn (outer, ip6_ecn_network_order ((inner)));
}

static_always_inline void
tunnel_encap_fixup_6o6 (tunnel_encap_decap_flags_t flags,
			const ip6_header_t * inner, ip6_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    ip6_set_dscp_network_order (outer, ip6_dscp_network_order (inner));
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
    ip6_set_ecn_network_order (outer, ip6_ecn_network_order (inner));
}

static_always_inline void
tunnel_encap_fixup_4o6 (tunnel_encap_decap_flags_t flags,
			const ip4_header_t * inner, ip6_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP)
    ip6_set_dscp_network_order (outer, ip4_header_get_dscp (inner));
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)
    ip6_set_ecn_network_order (outer, ip4_header_get_ecn (inner));
}

static_always_inline void
tunnel_decap_fixup_4o6 (tunnel_encap_decap_flags_t flags,
			ip4_header_t * inner, const ip6_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN)
    ip4_header_set_ecn_w_chksum (inner, ip6_ecn_network_order (outer));
}

static_always_inline void
tunnel_decap_fixup_6o6 (tunnel_encap_decap_flags_t flags,
			ip6_header_t * inner, const ip6_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN)
    ip6_set_ecn_network_order (inner, ip6_ecn_network_order (outer));
}

static_always_inline void
tunnel_decap_fixup_6o4 (tunnel_encap_decap_flags_t flags,
			ip6_header_t * inner, const ip4_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN)
    ip6_set_ecn_network_order (inner, ip4_header_get_ecn (outer));
}

static_always_inline void
tunnel_decap_fixup_4o4 (tunnel_encap_decap_flags_t flags,
			ip4_header_t * inner, const ip4_header_t * outer)
{
  if (flags & TUNNEL_ENCAP_DECAP_FLAG_DECAP_COPY_ECN)
    ip4_header_set_ecn_w_chksum (inner, ip4_header_get_ecn (outer));
}

#endif

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
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) 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)) 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() 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. """ icmpv6_id = 0xb icmpv6_seq = 5 icmpv6_data = b'\x0a' * 18 p_echo_request = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) / ICMPv6EchoRequest( id=icmpv6_id, seq=icmpv6_seq, data=icmpv6_data)) self.pg0.add_stream(p_echo_request) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(1) rx = rx[0] 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, self.pg0.local_ip6) self.assertEqual(ipv6.dst, self.pg0.remote_ip6) self.assertEqual( icmp6types[icmpv6.type], "Echo Reply") self.assertEqual(icmpv6.id, icmpv6_id) self.assertEqual(icmpv6.seq, icmpv6_seq) self.assertEqual(icmpv6.data, icmpv6_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 is 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 """ # # An (S,G). # one accepting interface, pg0, 2 forwarding interfaces # route_ff_01 = VppIpMRoute( self, "::", "ffef::1", 128, MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE, [VppMRoutePath(self.pg1.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT), VppMRoutePath(self.pg0.sw_if_index, MRouteItfFlags.MFIB_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) for oo in outputs: rx = oo._get_capture(1) self.assertNotEqual(0, len(rx)) 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. # self.send_and_expect_load_balancing(self.pg0, port_ip_pkts, [self.pg1, self.pg2]) 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]) self.send_and_expect_load_balancing(self.pg0, port_mpls_neos_pkts, [self.pg1, self.pg2]) # # 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, 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, 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 TestIP6Punt(VppTestCase): """ IPv6 Punt Police/Redirect """ @classmethod def setUpClass(cls): super(TestIP6Punt, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6Punt, cls).tearDownClass() def setUp(self): super(TestIP6Punt, self).setUp() self.create_pg_interfaces(range(4)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): super(TestIP6Punt, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() def test_ip_punt(self): """ IP6 punt police and redirect """ p = (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)) pkts = p * 1025 # # Configure a punt redirect via pg1. # nh_addr = self.pg1.remote_ip6 self.vapi.ip_punt_redirect(self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr) self.send_and_expect(self.pg0, pkts, self.pg1) # # add a policer # policer = self.vapi.policer_add_del(b"ip6-punt", 400, 0, 10, 0, rate_type=1) self.vapi.ip_punt_police(policer.policer_index, is_ip6=1) 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 # self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1) self.vapi.policer_add_del(b"ip6-punt", 400, 0, 10, 0, rate_type=1, is_add=0) self.send_and_expect(self.pg0, pkts, self.pg1) # # remove the redirect. expect full drop. # self.vapi.ip_punt_redirect(self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr, is_add=0) self.send_and_assert_no_replies(self.pg0, pkts, "IP no punt config") # # Add a redirect that is not input port selective # self.vapi.ip_punt_redirect(0xffffffff, self.pg1.sw_if_index, nh_addr) self.send_and_expect(self.pg0, pkts, self.pg1) self.vapi.ip_punt_redirect(0xffffffff, self.pg1.sw_if_index, nh_addr, is_add=0) def test_ip_punt_dump(self): """ IP6 punt redirect dump""" # # Configure a punt redirects # nh_addr = self.pg3.remote_ip6 self.vapi.ip_punt_redirect(self.pg0.sw_if_index, self.pg3.sw_if_index, nh_addr) self.vapi.ip_punt_redirect(self.pg1.sw_if_index, self.pg3.sw_if_index, nh_addr) self.vapi.ip_punt_redirect(self.pg2.sw_if_index, self.pg3.sw_if_index, '0::0') # # Dump pg0 punt redirects # punts = self.vapi.ip_punt_redirect_dump(self.pg0.sw_if_index, is_ipv6=1) for p in punts: self.assertEqual(p.punt.rx_sw_if_index, self.pg0.sw_if_index) # # 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 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.resolve_arp() 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_ip4() def test_replace(self): """ IP Table Replace """ 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_ENTRY_FLAG_NONE, [VppMRoutePath(self.pg0.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6), VppMRoutePath(self.pg1.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6), VppMRoutePath(self.pg2.sw_if_index, MRouteItfFlags.MFIB_ITF_FLAG_FORWARD, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6), VppMRoutePath(self.pg3.sw_if_index, MRouteItfFlags.MFIB_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) if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)