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(socket.AF_INET6, self.pg0.local_ip6))
d = inet_ntop(socket.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(socket.AF_INET6, "fd::ffff"))
d = inet_ntop(socket.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(socket.AF_INET6, self.pg0.local_ip6))
d = inet_ntop(socket.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")
def ns_req(cls, src_host, host):
nsma = in6_getnsma(inet_pton(AF_INET6, "fd10::ffff"))
d = inet_ntop(AF_INET6, nsma)
return (Ether(dst="ff:ff:ff:ff:ff:ff", src=src_host.mac) /
IPv6(dst=d, src=src_host.ip6) /
ICMPv6ND_NS(tgt=host.ip6) /
ICMPv6NDOptSrcLLAddr(lladdr=src_host.mac))
def test_addresses(self):
""" Test handling of addresses """
ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=1,
validlft=2)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, ianaopts=ia_na_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, ianaopts=ia_na_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(inet_ntop(AF_INET6, addr), '7:8::2')
self.sleep(2)
# check that the address is deleted
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg0))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
def test_addresses(self):
""" Test handling of addresses """
ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=1,
validlft=2)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, ianaopts=ia_na_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, ianaopts=ia_na_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(inet_ntop(AF_INET6, addr), '7:8::2')
self.sleep(2)
# check that the address is deleted
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg0))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
def ns_req(cls, src_host, host):
nsma = in6_getnsma(inet_pton(AF_INET6, "fd10::ffff"))
d = inet_ntop(AF_INET6, nsma)
return (Ether(dst="ff:ff:ff:ff:ff:ff", src=src_host.mac) /
IPv6(dst=d, src=src_host.ip6) /
ICMPv6ND_NS(tgt=host.ip6) /
ICMPv6NDOptSrcLLAddr(lladdr=src_host.mac))
def create_ndp_req(self):
"""Create NDP - NS applicable for this interface"""
nsma = in6_getnsma(inet_pton(socket.AF_INET6, self.local_ip6))
d = inet_ntop(socket.AF_INET6, nsma)
return (Ether(dst=in6_getnsmac(nsma)) /
IPv6(dst=d, src=self.remote_ip6) /
ICMPv6ND_NS(tgt=self.local_ip6) /
ICMPv6NDOptSrcLLAddr(lladdr=self.remote_mac))
def create_ndp_req(self):
"""Create NDP - NS applicable for this interface"""
nsma = in6_getnsma(inet_pton(socket.AF_INET6, self.local_ip6))
d = inet_ntop(socket.AF_INET6, nsma)
return (Ether(dst=in6_getnsmac(nsma)) /
IPv6(dst=d, src=self.remote_ip6) /
ICMPv6ND_NS(tgt=self.local_ip6) /
ICMPv6NDOptSrcLLAddr(lladdr=self.remote_mac))
def test_gbp(self):
""" Group Based Policy """
nat_table = VppIpTable(self, 20)
nat_table.add_vpp_config()
nat_table = VppIpTable(self, 20, is_ip6=True)
nat_table.add_vpp_config()
#
# Bridge Domains
#
self.vapi.bridge_domain_add_del(1,
flood=1,
uu_flood=1,
forward=1,
learn=0,
arp_term=1,
is_add=1)
self.vapi.bridge_domain_add_del(2,
flood=1,
uu_flood=1,
forward=1,
learn=0,
arp_term=1,
is_add=1)
self.vapi.bridge_domain_add_del(20,
flood=1,
uu_flood=1,
forward=1,
learn=0,
arp_term=1,
is_add=1)
#
# 3 EPGs, 2 of which share a BD.
#
epgs = []
recircs = []
epgs.append(
VppGbpEndpointGroup(self, 220, 0, 1, self.pg4, self.loop0,
"10.0.0.128", "2001:10::128"))
recircs.append(VppGbpRecirc(self, epgs[0], self.loop3))
epgs.append(
VppGbpEndpointGroup(self, 221, 0, 1, self.pg5, self.loop0,
"10.0.1.128", "2001:10:1::128"))
recircs.append(VppGbpRecirc(self, epgs[1], self.loop4))
epgs.append(
VppGbpEndpointGroup(self, 222, 0, 2, self.pg6, self.loop1,
"10.0.2.128", "2001:10:2::128"))
recircs.append(VppGbpRecirc(self, epgs[2], self.loop5))
#
# 2 NAT EPGs, one for floating-IP subnets, the other for internet
#
epgs.append(
VppGbpEndpointGroup(self, 333, 20, 20, self.pg7, self.loop2,
"11.0.0.128", "3001::128"))
recircs.append(VppGbpRecirc(self, epgs[3], self.loop6, is_ext=True))
epgs.append(
VppGbpEndpointGroup(self, 444, 20, 20, self.pg8, self.loop2,
"11.0.0.129", "3001::129"))
recircs.append(VppGbpRecirc(self, epgs[4], self.loop8, is_ext=True))
epg_nat = epgs[3]
recirc_nat = recircs[3]
#
# 4 end-points, 2 in the same subnet, 3 in the same BD
#
eps = []
eps.append(
VppGbpEndpoint(self, self.pg0, epgs[0], recircs[0], "10.0.0.1",
"11.0.0.1"))
eps.append(
VppGbpEndpoint(self, self.pg1, epgs[0], recircs[0], "10.0.0.2",
"11.0.0.2"))
eps.append(
VppGbpEndpoint(self, self.pg2, epgs[1], recircs[1], "10.0.1.1",
"11.0.0.3"))
eps.append(
VppGbpEndpoint(self, self.pg3, epgs[2], recircs[2], "10.0.2.1",
"11.0.0.4"))
eps.append(
VppGbpEndpoint(self,
self.pg0,
epgs[0],
recircs[0],
"2001:10::1",
"3001::1",
is_ip6=True))
eps.append(
VppGbpEndpoint(self,
self.pg1,
epgs[0],
recircs[0],
"2001:10::2",
"3001::2",
is_ip6=True))
eps.append(
VppGbpEndpoint(self,
self.pg2,
epgs[1],
recircs[1],
"2001:10:1::1",
"3001::3",
is_ip6=True))
eps.append(
VppGbpEndpoint(self,
self.pg3,
epgs[2],
recircs[2],
"2001:10:2::1",
"3001::4",
is_ip6=True))
#
# Config related to each of the EPGs
#
for epg in epgs:
# IP config on the BVI interfaces
if epg != epgs[1] and epg != epgs[4]:
epg.bvi.set_table_ip4(epg.rd)
epg.bvi.set_table_ip6(epg.rd)
# The BVIs are NAT inside interfaces
self.vapi.nat44_interface_add_del_feature(epg.bvi.sw_if_index,
is_inside=1,
is_add=1)
self.vapi.nat66_add_del_interface(epg.bvi.sw_if_index,
is_inside=1,
is_add=1)
self.vapi.sw_interface_add_del_address(epg.bvi.sw_if_index,
epg.bvi_ip4_n, 32)
self.vapi.sw_interface_add_del_address(epg.bvi.sw_if_index,
epg.bvi_ip6_n,
128,
is_ipv6=True)
# EPG uplink interfaces in the BD
epg.uplink.set_table_ip4(epg.rd)
epg.uplink.set_table_ip6(epg.rd)
self.vapi.sw_interface_set_l2_bridge(epg.uplink.sw_if_index,
epg.bd)
# add the BD ARP termination entry for BVI IP
self.vapi.bd_ip_mac_add_del(bd_id=epg.bd,
mac=mactobinary(self.router_mac),
ip=epg.bvi_ip4_n,
is_ipv6=0,
is_add=1)
self.vapi.bd_ip_mac_add_del(bd_id=epg.bd,
mac=mactobinary(self.router_mac),
ip=epg.bvi_ip6_n,
is_ipv6=1,
is_add=1)
# epg[1] shares the same BVI to epg[0]
if epg != epgs[1] and epg != epgs[4]:
# BVI in BD
self.vapi.sw_interface_set_l2_bridge(epg.bvi.sw_if_index,
epg.bd,
bvi=1)
# BVI L2 FIB entry
self.vapi.l2fib_add_del(self.router_mac,
epg.bd,
epg.bvi.sw_if_index,
is_add=1,
bvi_mac=1)
# EPG in VPP
epg.add_vpp_config()
for recirc in recircs:
# EPG's ingress recirculation interface maps to its RD
recirc.recirc.set_table_ip4(recirc.epg.rd)
recirc.recirc.set_table_ip6(recirc.epg.rd)
# in the bridge to allow DVR. L2 emulation to punt to L3
self.vapi.sw_interface_set_l2_bridge(recirc.recirc.sw_if_index,
recirc.epg.bd)
self.vapi.sw_interface_set_l2_emulation(recirc.recirc.sw_if_index)
self.vapi.nat44_interface_add_del_feature(
recirc.recirc.sw_if_index, is_inside=0, is_add=1)
self.vapi.nat66_add_del_interface(recirc.recirc.sw_if_index,
is_inside=0,
is_add=1)
recirc.add_vpp_config()
ep_routes = []
ep_arps = []
for ep in eps:
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
#
# routes to the endpoints. We need these since there are no
# adj-fibs due to the fact the the BVI address has /32 and
# the subnet is not attached.
#
r = VppIpRoute(
self,
ep.ip,
ep.ip_len,
[VppRoutePath(ep.ip, ep.epg.bvi.sw_if_index, proto=ep.proto)],
is_ip6=ep.is_ip6)
r.add_vpp_config()
ep_routes.append(r)
#
# ARP entries for the endpoints
#
a = VppNeighbor(self,
ep.epg.bvi.sw_if_index,
ep.itf.remote_mac,
ep.ip,
af=ep.af)
a.add_vpp_config()
ep_arps.append(a)
# add each EP itf to the its BD
self.vapi.sw_interface_set_l2_bridge(ep.itf.sw_if_index, ep.epg.bd)
# add the BD ARP termination entry
self.vapi.bd_ip_mac_add_del(bd_id=ep.epg.bd,
mac=ep.bin_mac,
ip=ep.ip_n,
is_ipv6=0,
is_add=1)
# L2 FIB entry
self.vapi.l2fib_add_del(ep.mac,
ep.epg.bd,
ep.itf.sw_if_index,
is_add=1)
# Add static mappings for each EP from the 10/8 to 11/8 network
if ep.af == AF_INET:
self.vapi.nat44_add_del_static_mapping(ep.ip_n,
ep.floating_ip_n,
vrf_id=0,
addr_only=1)
else:
self.vapi.nat66_add_del_static_mapping(ep.ip_n,
ep.floating_ip_n,
vrf_id=0)
# VPP EP create ...
ep.add_vpp_config()
# ... results in a Gratuitous ARP/ND on the EPG's uplink
rx = ep.epg.uplink.get_capture(1, timeout=0.2)
if ep.is_ip6:
self.assertTrue(rx[0].haslayer(ICMPv6ND_NA))
self.assertEqual(rx[0][ICMPv6ND_NA].tgt, ep.ip)
else:
self.assertTrue(rx[0].haslayer(ARP))
self.assertEqual(rx[0][ARP].psrc, ep.ip)
self.assertEqual(rx[0][ARP].pdst, ep.ip)
# add the BD ARP termination entry for floating IP
self.vapi.bd_ip_mac_add_del(bd_id=epg_nat.bd,
mac=ep.bin_mac,
ip=ep.floating_ip_n,
is_ipv6=ep.is_ip6,
is_add=1)
# floating IPs route via EPG recirc
r = VppIpRoute(self,
ep.floating_ip,
ep.ip_len, [
VppRoutePath(ep.floating_ip,
ep.recirc.recirc.sw_if_index,
is_dvr=1,
proto=ep.proto)
],
table_id=20,
is_ip6=ep.is_ip6)
r.add_vpp_config()
ep_routes.append(r)
# L2 FIB entries in the NAT EPG BD to bridge the packets from
# the outside direct to the internal EPG
self.vapi.l2fib_add_del(ep.mac,
epg_nat.bd,
ep.recirc.recirc.sw_if_index,
is_add=1)
#
# ARP packets for unknown IP are flooded
#
pkt_arp = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
ARP(op="who-has",
hwdst="ff:ff:ff:ff:ff:ff",
hwsrc=self.pg0.remote_mac,
pdst=epgs[0].bvi_ip4,
psrc="10.0.0.88"))
self.send_and_expect(self.pg0, [pkt_arp], self.pg0)
#
# ARP/ND packets get a response
#
pkt_arp = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
ARP(op="who-has",
hwdst="ff:ff:ff:ff:ff:ff",
hwsrc=self.pg0.remote_mac,
pdst=epgs[0].bvi_ip4,
psrc=eps[0].ip))
self.send_and_expect(self.pg0, [pkt_arp], self.pg0)
nsma = in6_getnsma(inet_pton(AF_INET6, eps[4].ip))
d = inet_ntop(AF_INET6, nsma)
pkt_nd = (Ether(dst=in6_getnsmac(nsma)) / IPv6(dst=d, src=eps[4].ip) /
ICMPv6ND_NS(tgt=epgs[0].bvi_ip6) /
ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
self.send_and_expect(self.pg0, [pkt_nd], self.pg0)
#
# broadcast packets are flooded
#
pkt_bcast = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
IP(src=eps[0].ip, dst="232.1.1.1") /
UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
self.vapi.cli("clear trace")
self.pg0.add_stream(pkt_bcast)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rxd = eps[1].itf.get_capture(1)
self.assertEqual(rxd[0][Ether].dst, pkt_bcast[Ether].dst)
rxd = epgs[0].uplink.get_capture(1)
self.assertEqual(rxd[0][Ether].dst, pkt_bcast[Ether].dst)
#
# packets to non-local L3 destinations dropped
#
pkt_intra_epg_220_ip4 = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IP(src=eps[0].ip, dst="10.0.0.99") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
pkt_inter_epg_222_ip4 = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IP(src=eps[0].ip, dst="10.0.1.99") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_assert_no_replies(self.pg0, pkt_intra_epg_220_ip4 * 65)
pkt_inter_epg_222_ip6 = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IPv6(src=eps[4].ip, dst="2001:10::99") /
UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
self.send_and_assert_no_replies(self.pg0, pkt_inter_epg_222_ip6 * 65)
#
# Add the subnet routes
#
s41 = VppGbpSubnet(self, 0, "10.0.0.0", 24)
s42 = VppGbpSubnet(self, 0, "10.0.1.0", 24)
s43 = VppGbpSubnet(self, 0, "10.0.2.0", 24)
s41.add_vpp_config()
s42.add_vpp_config()
s43.add_vpp_config()
s61 = VppGbpSubnet(self, 0, "2001:10::1", 64, is_ip6=True)
s62 = VppGbpSubnet(self, 0, "2001:10:1::1", 64, is_ip6=True)
s63 = VppGbpSubnet(self, 0, "2001:10:2::1", 64, is_ip6=True)
s61.add_vpp_config()
s62.add_vpp_config()
s63.add_vpp_config()
self.send_and_expect_bridged(self.pg0, pkt_intra_epg_220_ip4 * 65,
self.pg4)
self.send_and_expect_bridged(self.pg3, pkt_inter_epg_222_ip4 * 65,
self.pg6)
self.send_and_expect_bridged6(self.pg3, pkt_inter_epg_222_ip6 * 65,
self.pg6)
self.logger.info(self.vapi.cli("sh ip fib 11.0.0.2"))
self.logger.info(self.vapi.cli("sh gbp endpoint-group"))
self.logger.info(self.vapi.cli("sh gbp endpoint"))
self.logger.info(self.vapi.cli("sh gbp recirc"))
self.logger.info(self.vapi.cli("sh int"))
self.logger.info(self.vapi.cli("sh int addr"))
self.logger.info(self.vapi.cli("sh int feat loop6"))
self.logger.info(self.vapi.cli("sh vlib graph ip4-gbp-src-classify"))
self.logger.info(self.vapi.cli("sh int feat loop3"))
#
# Packet destined to unknown unicast is sent on the epg uplink ...
#
pkt_intra_epg_220_to_uplink = (
Ether(src=self.pg0.remote_mac, dst="00:00:00:33:44:55") /
IP(src=eps[0].ip, dst="10.0.0.99") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect_bridged(self.pg0,
pkt_intra_epg_220_to_uplink * 65,
self.pg4)
# ... and nowhere else
self.pg1.get_capture(0, timeout=0.1)
self.pg1.assert_nothing_captured(remark="Flood onto other VMS")
pkt_intra_epg_221_to_uplink = (
Ether(src=self.pg2.remote_mac, dst="00:00:00:33:44:66") /
IP(src=eps[0].ip, dst="10.0.0.99") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect_bridged(self.pg2,
pkt_intra_epg_221_to_uplink * 65,
self.pg5)
#
# Packets from the uplink are forwarded in the absence of a contract
#
pkt_intra_epg_220_from_uplink = (
Ether(src="00:00:00:33:44:55", dst=self.pg0.remote_mac) /
IP(src=eps[0].ip, dst="10.0.0.99") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect_bridged(self.pg4,
pkt_intra_epg_220_from_uplink * 65,
self.pg0)
#
# in the absence of policy, endpoints in the same EPG
# can communicate
#
pkt_intra_epg = (
Ether(src=self.pg0.remote_mac, dst=self.pg1.remote_mac) /
IP(src=eps[0].ip, dst=eps[1].ip) / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect_bridged(self.pg0, pkt_intra_epg * 65, self.pg1)
#
# in the abscense of policy, endpoints in the different EPG
# cannot communicate
#
pkt_inter_epg_220_to_221 = (
Ether(src=self.pg0.remote_mac, dst=self.pg2.remote_mac) /
IP(src=eps[0].ip, dst=eps[2].ip) / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
pkt_inter_epg_221_to_220 = (
Ether(src=self.pg2.remote_mac, dst=self.pg0.remote_mac) /
IP(src=eps[2].ip, dst=eps[0].ip) / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
pkt_inter_epg_220_to_222 = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IP(src=eps[0].ip, dst=eps[3].ip) / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_assert_no_replies(self.pg0,
pkt_inter_epg_220_to_221 * 65)
self.send_and_assert_no_replies(self.pg0,
pkt_inter_epg_220_to_222 * 65)
#
# A uni-directional contract from EPG 220 -> 221
#
c1 = VppGbpContract(self, 220, 221, 0)
c1.add_vpp_config()
self.send_and_expect_bridged(self.pg0, pkt_inter_epg_220_to_221 * 65,
self.pg2)
self.send_and_assert_no_replies(self.pg0,
pkt_inter_epg_220_to_222 * 65)
#
# contract for the return direction
#
c2 = VppGbpContract(self, 221, 220, 0)
c2.add_vpp_config()
self.send_and_expect_bridged(self.pg0, pkt_inter_epg_220_to_221 * 65,
self.pg2)
self.send_and_expect_bridged(self.pg2, pkt_inter_epg_221_to_220 * 65,
self.pg0)
#
# check that inter group is still disabled for the groups
# not in the contract.
#
self.send_and_assert_no_replies(self.pg0,
pkt_inter_epg_220_to_222 * 65)
#
# A uni-directional contract from EPG 220 -> 222 'L3 routed'
#
c3 = VppGbpContract(self, 220, 222, 0)
c3.add_vpp_config()
self.logger.info(self.vapi.cli("sh gbp contract"))
self.send_and_expect_routed(self.pg0, pkt_inter_epg_220_to_222 * 65,
self.pg3, self.router_mac)
#
# remove both contracts, traffic stops in both directions
#
c2.remove_vpp_config()
c1.remove_vpp_config()
c3.remove_vpp_config()
self.send_and_assert_no_replies(self.pg2,
pkt_inter_epg_221_to_220 * 65)
self.send_and_assert_no_replies(self.pg0,
pkt_inter_epg_220_to_221 * 65)
self.send_and_expect_bridged(self.pg0, pkt_intra_epg * 65, self.pg1)
#
# EPs to the outside world
#
# in the EP's RD an external subnet via the NAT EPG's recirc
se1 = VppGbpSubnet(self,
0,
"0.0.0.0",
0,
is_internal=False,
sw_if_index=recirc_nat.recirc.sw_if_index,
epg=epg_nat.epg)
se1.add_vpp_config()
se2 = VppGbpSubnet(self,
0,
"11.0.0.0",
8,
is_internal=False,
sw_if_index=recirc_nat.recirc.sw_if_index,
epg=epg_nat.epg)
se2.add_vpp_config()
se16 = VppGbpSubnet(self,
0,
"::",
0,
is_internal=False,
sw_if_index=recirc_nat.recirc.sw_if_index,
epg=epg_nat.epg,
is_ip6=True)
se16.add_vpp_config()
# in the NAT RD an external subnet via the NAT EPG's uplink
se3 = VppGbpSubnet(self,
20,
"0.0.0.0",
0,
is_internal=False,
sw_if_index=epg_nat.uplink.sw_if_index,
epg=epg_nat.epg)
se36 = VppGbpSubnet(self,
20,
"::",
0,
is_internal=False,
sw_if_index=epg_nat.uplink.sw_if_index,
epg=epg_nat.epg,
is_ip6=True)
se4 = VppGbpSubnet(self,
20,
"11.0.0.0",
8,
is_internal=False,
sw_if_index=epg_nat.uplink.sw_if_index,
epg=epg_nat.epg)
se3.add_vpp_config()
se36.add_vpp_config()
se4.add_vpp_config()
self.logger.info(self.vapi.cli("sh ip fib 0.0.0.0/0"))
self.logger.info(self.vapi.cli("sh ip fib 11.0.0.1"))
self.logger.info(self.vapi.cli("sh ip6 fib ::/0"))
self.logger.info(self.vapi.cli("sh ip6 fib %s" % eps[4].floating_ip))
#
# From an EP to an outside addess: IN2OUT
#
pkt_inter_epg_220_to_global = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IP(src=eps[0].ip, dst="1.1.1.1") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
# no policy yet
self.send_and_assert_no_replies(self.pg0,
pkt_inter_epg_220_to_global * 65)
c4 = VppGbpContract(self, 220, 333, 0)
c4.add_vpp_config()
self.send_and_expect_natted(self.pg0, pkt_inter_epg_220_to_global * 65,
self.pg7, eps[0].floating_ip)
pkt_inter_epg_220_to_global = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IPv6(src=eps[4].ip, dst="6001::1") / UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect_natted6(self.pg0,
pkt_inter_epg_220_to_global * 65,
self.pg7, eps[4].floating_ip)
#
# From a global address to an EP: OUT2IN
#
pkt_inter_epg_220_from_global = (
Ether(src=self.router_mac, dst=self.pg0.remote_mac) /
IP(dst=eps[0].floating_ip, src="1.1.1.1") /
UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
self.send_and_assert_no_replies(self.pg7,
pkt_inter_epg_220_from_global * 65)
c5 = VppGbpContract(self, 333, 220, 0)
c5.add_vpp_config()
self.send_and_expect_unnatted(self.pg7,
pkt_inter_epg_220_from_global * 65,
eps[0].itf, eps[0].ip)
pkt_inter_epg_220_from_global = (
Ether(src=self.router_mac, dst=self.pg0.remote_mac) /
IPv6(dst=eps[4].floating_ip, src="6001::1") /
UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
self.send_and_expect_unnatted6(self.pg7,
pkt_inter_epg_220_from_global * 65,
eps[4].itf, eps[4].ip)
#
# From a local VM to another local VM using resp. public addresses:
# IN2OUT2IN
#
pkt_intra_epg_220_global = (
Ether(src=self.pg0.remote_mac, dst=self.router_mac) /
IP(src=eps[0].ip, dst=eps[1].floating_ip) /
UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
self.send_and_expect_double_natted(eps[0].itf,
pkt_intra_epg_220_global * 65,
eps[1].itf, eps[0].floating_ip,
eps[1].ip)
pkt_intra_epg_220_global = (
Ether(src=self.pg4.remote_mac, dst=self.router_mac) /
IPv6(src=eps[4].ip, dst=eps[5].floating_ip) /
UDP(sport=1234, dport=1234) / Raw('\xa5' * 100))
self.send_and_expect_double_natted6(eps[4].itf,
pkt_intra_epg_220_global * 65,
eps[5].itf, eps[4].floating_ip,
eps[5].ip)
#
# cleanup
#
for ep in eps:
# del static mappings for each EP from the 10/8 to 11/8 network
if ep.af == AF_INET:
self.vapi.nat44_add_del_static_mapping(ep.ip_n,
ep.floating_ip_n,
vrf_id=0,
addr_only=1,
is_add=0)
else:
self.vapi.nat66_add_del_static_mapping(ep.ip_n,
ep.floating_ip_n,
vrf_id=0,
is_add=0)
for epg in epgs:
# IP config on the BVI interfaces
self.vapi.sw_interface_add_del_address(epg.bvi.sw_if_index,
epg.bvi_ip4_n,
32,
is_add=0)
self.vapi.sw_interface_add_del_address(epg.bvi.sw_if_index,
epg.bvi_ip6_n,
128,
is_add=0,
is_ipv6=True)
self.logger.info(self.vapi.cli("sh int addr"))
epg.uplink.set_table_ip4(0)
epg.uplink.set_table_ip6(0)
if epg != epgs[0] and epg != epgs[3]:
epg.bvi.set_table_ip4(0)
epg.bvi.set_table_ip6(0)
self.vapi.nat44_interface_add_del_feature(epg.bvi.sw_if_index,
is_inside=1,
is_add=0)
self.vapi.nat66_add_del_interface(epg.bvi.sw_if_index,
is_inside=1,
is_add=0)
for recirc in recircs:
recirc.recirc.set_table_ip4(0)
recirc.recirc.set_table_ip6(0)
self.vapi.nat44_interface_add_del_feature(
recirc.recirc.sw_if_index, is_inside=0, is_add=0)
self.vapi.nat66_add_del_interface(recirc.recirc.sw_if_index,
is_inside=0,
is_add=0)
def test_prefixes(self):
""" Test handling of prefixes """
address_bin_1 = None
address_bin_2 = None
try:
address_bin_1 = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
address_prefix_length_1 = 60
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin_1,
address_prefix_length_1,
self.prefix_group)
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=2,
validlft=3)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(inet_ntop(AF_INET6, addr), '7:8:0:2::405')
self.sleep(1)
address_bin_2 = '\x00' * 6 + '\x00\x76' + '\x00' * 6 + '\x04\x06'
address_prefix_length_2 = 62
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin_2,
address_prefix_length_2,
self.prefix_group)
self.sleep(1)
# check FIB contains 2 addresses
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 2)
addr1 = list(new_addresses)[0]
addr2 = list(new_addresses)[1]
if inet_ntop(AF_INET6, addr1) == '7:8:0:76::406':
addr1, addr2 = addr2, addr1
self.assertEqual(inet_ntop(AF_INET6, addr1), '7:8:0:2::405')
self.assertEqual(inet_ntop(AF_INET6, addr2), '7:8:0:76::406')
self.sleep(1)
# check that the addresses are deleted
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
if address_bin_1 is not None:
self.vapi.ip6_add_del_address_using_prefix(
self.pg1.sw_if_index, address_bin_1,
address_prefix_length_1, self.prefix_group, is_add=0)
if address_bin_2 is not None:
self.vapi.ip6_add_del_address_using_prefix(
self.pg1.sw_if_index, address_bin_2,
address_prefix_length_2, self.prefix_group, is_add=0)
def ip6_normalize(ip6):
return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
def test_prefixes(self):
""" Test handling of prefixes """
address_bin_1 = None
address_bin_2 = None
try:
address_bin_1 = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
address_prefix_length_1 = 60
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin_1,
address_prefix_length_1,
self.prefix_group)
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=2,
validlft=3)
self.wait_for_solicit()
self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
self.wait_for_request()
self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
self.sleep(0.1)
# check FIB for new address
new_addresses = self.get_addresses()
self.assertEqual(len(new_addresses), 1)
addr = list(new_addresses)[0]
self.assertEqual(inet_ntop(AF_INET6, addr), '7:8:0:2::405')
self.sleep(1)
address_bin_2 = '\x00' * 6 + '\x00\x76' + '\x00' * 6 + '\x04\x06'
address_prefix_length_2 = 62
self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
address_bin_2,
address_prefix_length_2,
self.prefix_group)
self.sleep(1)
# check FIB contains 2 addresses
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 2)
addr1 = list(new_addresses)[0]
addr2 = list(new_addresses)[1]
if inet_ntop(AF_INET6, addr1) == '7:8:0:76::406':
addr1, addr2 = addr2, addr1
self.assertEqual(inet_ntop(AF_INET6, addr1), '7:8:0:2::405')
self.assertEqual(inet_ntop(AF_INET6, addr2), '7:8:0:76::406')
self.sleep(1)
# check that the addresses are deleted
fib = self.vapi.ip6_fib_dump()
addresses = set(self.get_interface_addresses(fib, self.pg1))
new_addresses = addresses.difference(self.initial_addresses)
self.assertEqual(len(new_addresses), 0)
finally:
if address_bin_1 is not None:
self.vapi.ip6_add_del_address_using_prefix(
self.pg1.sw_if_index, address_bin_1,
address_prefix_length_1, self.prefix_group, is_add=0)
if address_bin_2 is not None:
self.vapi.ip6_add_del_address_using_prefix(
self.pg1.sw_if_index, address_bin_2,
address_prefix_length_2, self.prefix_group, is_add=0)
def ip6_normalize(ip6):
return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
def nd_event_host(self, e):
return Host(mac=':'.join(['%02x' % ord(char) for char in e.new_mac]),
ip6=inet_ntop(AF_INET6, e.address))
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.ip6_nd_proxy(
inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
self.pg1.sw_if_index)
#
# try that NS again. this time we expect an NA back
#
self.pg1.add_stream(ns_pg1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
self.validate_na(self.pg1,
rx[0],
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,
inet=AF_INET6))
#
# ... 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) /
UDP(sport=10000, dport=20000) / Raw('\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.pg0.add_stream(ns_pg0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(1)
self.validate_na(self.pg0,
rx[0],
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.ip6_nd_proxy(
inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
self.pg2.sw_if_index)
self.pg2.add_stream(ns_pg2)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg2.get_capture(1)
self.validate_na(self.pg2,
rx[0],
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,
inet=AF_INET6))
#
# 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) /
UDP(sport=10000, dport=20000) / Raw('\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.ip6_nd_proxy(inet_pton(AF_INET6,
self.pg0._remote_hosts[2].ip6),
self.pg1.sw_if_index,
is_del=1)
self.vapi.ip6_nd_proxy(inet_pton(AF_INET6,
self.pg0._remote_hosts[3].ip6),
self.pg2.sw_if_index,
is_del=1)
self.assertFalse(
find_nbr(self,
self.pg2.sw_if_index,
self.pg0._remote_hosts[3].ip6,
inet=AF_INET6))
self.assertFalse(
find_nbr(self,
self.pg1.sw_if_index,
self.pg0._remote_hosts[2].ip6,
inet=AF_INET6))
#
# 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))
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,
af=AF_INET6,
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,
inet=AF_INET6))
self.assertFalse(
find_route(self, self.pg0._remote_hosts[2].ip6, 128,
inet=AF_INET6))