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 __init__(self, test, sw_if_index, addr, epg, is_ip6=0):
self._test = test
self.sw_if_index = sw_if_index
self.epg = epg
self.addr_p = addr
self.is_ip6 = is_ip6
if is_ip6:
self.addr = inet_pton(AF_INET6, addr)
else:
self.addr = inet_pton(AF_INET, addr)
def __init__(self, test, epg, rd, bd, uplink, bvi, bvi_ip4, bvi_ip6=None):
self._test = test
self.uplink = uplink
self.bvi = bvi
self.bvi_ip4 = bvi_ip4
self.bvi_ip4_n = inet_pton(AF_INET, bvi_ip4)
self.bvi_ip6 = bvi_ip6
self.bvi_ip6_n = inet_pton(AF_INET6, bvi_ip6)
self.epg = epg
self.bd = bd
self.rd = rd
def __init__(self, test, table_id, address, address_len,
is_internal=True, is_ip6=False,
sw_if_index=None, epg=None):
self._test = test
self.table_id = table_id
self.address = address
self.address_len = address_len
self.is_ip6 = is_ip6
if is_ip6:
self.address_n = inet_pton(AF_INET6, address)
else:
self.address_n = inet_pton(AF_INET, address)
self.is_internal = is_internal
self.sw_if_index = sw_if_index
self.epg = epg
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 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 config_fib_entries(self, count):
"""For each interface add to the FIB table *count* routes to
"fd02::1/128" destination with interface's local address as next-hop
address.
:param int count: Number of FIB entries.
- *TODO:* check if the next-hop address shouldn't be remote address
instead of local address.
"""
n_int = len(self.interfaces)
percent = 0
counter = 0.0
dest_addr = inet_pton(AF_INET6, "fd02::1")
dest_addr_len = 128
for i in self.interfaces:
next_hop_address = i.local_ip6n
for j in range(count / n_int):
self.vapi.ip_add_del_route(dest_addr,
dest_addr_len,
next_hop_address,
is_ipv6=1)
counter += 1
if counter / count * 100 > percent:
self.logger.info("Configure %d FIB entries .. %d%% done" %
(count, percent))
percent += 1
def __init__(self, test, itf, epg, recirc, ip, fip, is_ip6=False):
self._test = test
self.itf = itf
self.epg = epg
self.recirc = recirc
self.ip = ip
self.floating_ip = fip
self.is_ip6 = is_ip6
if is_ip6:
self.proto = DpoProto.DPO_PROTO_IP6
self.af = AF_INET6
else:
self.proto = DpoProto.DPO_PROTO_IP4
self.af = AF_INET
self.ip_n = inet_pton(self.af, ip)
self.floating_ip_n = inet_pton(self.af, fip)
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 get_if_raw_addr6(iff):
"""
Returns the main global unicast address associated with provided
interface, in network format. If no global address is found, None
is returned.
"""
r = filter(lambda x: x[2] == iff and x[1] == IPV6_ADDR_GLOBAL, in6_getifaddr())
if len(r) == 0:
return None
else:
r = r[0][0]
return inet_pton(socket.AF_INET6, r)
def test_l2bd_arp_term_14(self):
""" L2BD ND term - disable ip4 arp events,send ns, verify no events
"""
self.vapi.want_ip6_nd_events(enable_disable=0,
address=inet_pton(AF_INET6, "::0"))
dst_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
macs = self.mac_list(range(10, 15))
hosts = self.ip6_hosts(5, 1, macs)
reqs = self.ns_reqs_dst(hosts, dst_host)
self.bd_swifs(1)[0].add_stream(reqs)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.sleep(1)
self.assertEqual(len(self.vapi.collect_events()), 0)
self.bd_add_del(1, is_add=0)
def test_l2bd_arp_term_12(self):
""" L2BD ND term - send NS packets verify reports
"""
self.vapi.want_ip6_nd_events(address=inet_pton(AF_INET6, "::0"))
dst_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
self.bd_add_del(1, is_add=1)
self.set_bd_flags(1, arp_term=True, flood=False,
uu_flood=False, learn=False)
macs = self.mac_list(range(10, 15))
hosts = self.ip6_hosts(5, 1, macs)
reqs = self.ns_reqs_dst(hosts, dst_host)
self.bd_swifs(1)[0].add_stream(reqs)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
evs = [self.vapi.wait_for_event(2, "ip6_nd_event")
for i in range(len(hosts))]
ev_hosts = self.nd_event_hosts(evs)
self.assertEqual(len(ev_hosts ^ hosts), 0)
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))
def test_dhcp6_proxy(self):
""" DHCPv6 Proxy"""
#
# Verify no response to DHCP request without DHCP config
#
dhcp_solicit_dst = "ff02::1:2"
dhcp_solicit_src_vrf0 = mk_ll_addr(self.pg2.remote_mac)
dhcp_solicit_src_vrf1 = mk_ll_addr(self.pg3.remote_mac)
server_addr_vrf0 = self.pg0.remote_ip6n
src_addr_vrf0 = self.pg0.local_ip6n
server_addr_vrf1 = self.pg1.remote_ip6n
src_addr_vrf1 = self.pg1.local_ip6n
dmac = in6_getnsmac(inet_pton(socket.AF_INET6, dhcp_solicit_dst))
p_solicit_vrf0 = (
Ether(dst=dmac, src=self.pg2.remote_mac) /
IPv6(src=dhcp_solicit_src_vrf0, dst=dhcp_solicit_dst) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT) /
DHCP6_Solicit())
p_solicit_vrf1 = (
Ether(dst=dmac, src=self.pg3.remote_mac) /
IPv6(src=dhcp_solicit_src_vrf1, dst=dhcp_solicit_dst) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT) /
DHCP6_Solicit())
self.send_and_assert_no_replies(self.pg2, p_solicit_vrf0,
"DHCP with no configuration")
self.send_and_assert_no_replies(self.pg3, p_solicit_vrf1,
"DHCP with no configuration")
#
# DHCPv6 config in VRF 0.
# Packets still dropped because the client facing interface has no
# IPv6 config
#
self.vapi.dhcp_proxy_config(server_addr_vrf0,
src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
is_ipv6=1)
self.send_and_assert_no_replies(self.pg2, p_solicit_vrf0,
"DHCP with no configuration")
self.send_and_assert_no_replies(self.pg3, p_solicit_vrf1,
"DHCP with no configuration")
#
# configure an IP address on the client facing interface
#
self.pg2.config_ip6()
#
# Now the DHCP requests are relayed to the server
#
self.pg2.add_stream(p_solicit_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(1)
self.verify_dhcp6_solicit(rx[0], self.pg0, dhcp_solicit_src_vrf0,
self.pg2.remote_mac)
#
# Exception cases for rejected relay responses
#
# 1 - not a relay reply
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_Advertise())
self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP6 not a relay reply")
# 2 - no relay message option
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() / DHCP6_Advertise())
self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP not a relay message")
# 3 - no circuit ID
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() / DHCP6OptRelayMsg(optlen=0) /
DHCP6_Advertise())
self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP6 no circuit ID")
# 4 - wrong circuit ID
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise())
self.send_and_assert_no_replies(self.pg2, p_adv_vrf0,
"DHCP6 wrong circuit ID")
#
# Send the relay response (the advertisement)
# - no peer address
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts_adv_vrf0 = [p_adv_vrf0]
self.pg0.add_stream(pkts_adv_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg2.get_capture(1)
self.verify_dhcp6_advert(rx[0], self.pg2, "::")
#
# Send the relay response (the advertisement)
# - with peer address
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf0) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts_adv_vrf0 = [p_adv_vrf0]
self.pg0.add_stream(pkts_adv_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg2.get_capture(1)
self.verify_dhcp6_advert(rx[0], self.pg2, dhcp_solicit_src_vrf0)
#
# Add all the config for VRF 1
#
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
is_ipv6=1)
self.pg3.config_ip6()
#
# VRF 1 solicit
#
self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
self.verify_dhcp6_solicit(rx[0], self.pg1, dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
#
# VRF 1 Advert
#
p_adv_vrf1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts_adv_vrf1 = [p_adv_vrf1]
self.pg1.add_stream(pkts_adv_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg3.get_capture(1)
self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf1)
#
# Add VSS config
# table=1, fib=id=1, oui=4
self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1)
self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
self.verify_dhcp6_solicit(rx[0],
self.pg1,
dhcp_solicit_src_vrf1,
self.pg3.remote_mac,
fib_id=1,
oui=4)
#
# Remove the VSS config
# relayed DHCP has default vlaues in the option.
#
self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1, is_add=0)
self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
self.verify_dhcp6_solicit(rx[0], self.pg1, dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
#
# Add a second DHCP server in VRF 1
# expect clients messages to be relay to both configured servers
#
self.pg1.generate_remote_hosts(2)
server_addr2 = socket.inet_pton(AF_INET6, self.pg1.remote_hosts[1].ip6)
self.vapi.dhcp_proxy_config(server_addr2,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
is_ipv6=1)
#
# We'll need an ND entry for the server to send it packets
#
nd_entry = VppNeighbor(self,
self.pg1.sw_if_index,
self.pg1.remote_hosts[1].mac,
self.pg1.remote_hosts[1].ip6,
af=AF_INET6)
nd_entry.add_vpp_config()
#
# Send a discover from the client. expect two relayed messages
# The frist packet is sent to the second server
# We're not enforcing that here, it's just the way it is.
#
self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(2)
self.verify_dhcp6_solicit(rx[0], self.pg1, dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
self.verify_dhcp6_solicit(rx[1],
self.pg1,
dhcp_solicit_src_vrf1,
self.pg3.remote_mac,
dst_mac=self.pg1.remote_hosts[1].mac,
dst_ip=self.pg1.remote_hosts[1].ip6)
#
# Send both packets back. Client gets both.
#
p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_hosts[1].mac) /
IPv6(dst=self.pg1.local_ip6, src=self.pg1._remote_hosts[1].ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts = [p1, p2]
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg3.get_capture(2)
self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf1)
self.verify_dhcp6_advert(rx[1], self.pg3, dhcp_solicit_src_vrf1)
#
# Ensure only solicit messages are duplicated
#
p_request_vrf1 = (
Ether(dst=dmac, src=self.pg3.remote_mac) /
IPv6(src=dhcp_solicit_src_vrf1, dst=dhcp_solicit_dst) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT) /
DHCP6_Request())
self.pg3.add_stream(p_request_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
#
# Test we drop DHCP packets from addresses that are not configured as
# DHCP servers
#
p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_hosts[1].mac) /
IPv6(dst=self.pg1.local_ip6, src="3001::1") /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
self.send_and_assert_no_replies(self.pg1, p2, "DHCP6 not from server")
#
# Remove the second DHCP server
#
self.vapi.dhcp_proxy_config(server_addr2,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
is_ipv6=1,
is_add=0)
#
# Test we can still relay with the first
#
self.pg3.add_stream(p_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
self.verify_dhcp6_solicit(rx[0], self.pg1, dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
#
# Cleanup
#
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
is_ipv6=1,
is_add=0)
self.vapi.dhcp_proxy_config(server_addr_vrf0,
src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
is_ipv6=1,
is_add=0)
# duplicate delete
self.vapi.dhcp_proxy_config(server_addr_vrf0,
src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
is_ipv6=1,
is_add=0)
self.pg2.unconfig_ip6()
self.pg3.unconfig_ip6()
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 reconfiure 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(self.pg0.local_ip6n,
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(self.pg0.local_ip6n,
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(self.pg0.local_ip6n,
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(self.pg0.local_ip6n,
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(self.pg0.local_ip6n,
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 defults option to revert to defaults
# L and A flag are clear in the advert
#
self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
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(self.pg1.local_ip6n,
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 refix-info - expect the second is still in the
# advert
#
self.pg0.ip6_ra_prefix(self.pg0.local_ip6n,
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 i nthe adverts
#
self.pg0.ip6_ra_prefix(self.pg1.local_ip6n,
self.pg1.local_ip6_prefix_len,
is_no=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)
#
# Reset the periodic advertisements back to default values
#
self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
def test_dhcp_ia_na_send_solicit_receive_advertise(self):
""" Verify DHCPv6 IA NA Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
address_bin = '\00\01\00\02\00\03' + '\00' * 8 + '\00\05'
address = {'address': address_bin,
'preferred_time': 60,
'valid_time': 120}
self.vapi.dhcp6_send_client_message(1, self.pg0.sw_if_index,
T1=20, T2=40, addresses=[address])
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertTrue(packet.haslayer(IPv6))
self.assertTrue(packet[IPv6].haslayer(DHCP6_Solicit))
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_na = packet[DHCP6OptIA_NA]
self.assert_equal(ia_na.T1, 20)
self.assert_equal(ia_na.T2, 40)
self.assert_equal(len(ia_na.ianaopts), 1)
address = ia_na.ianaopts[0]
self.assert_equal(address.addr, '1:2:3::5')
self.assert_equal(address.preflft, 60)
self.assert_equal(address.validlft, 120)
self.vapi.want_dhcp6_reply_events()
try:
ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=60,
validlft=120)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
DHCP6_Advertise(trid=trid) /
DHCP6OptServerId(duid=self.server_duid) /
DHCP6OptClientId(duid=client_duid) /
DHCP6OptPref(prefval=7) /
DHCP6OptStatusCode(statuscode=1) /
DHCP6OptIA_NA(iaid=1, T1=20, T2=40, ianaopts=ia_na_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_address = ev.addresses[0]
address = inet_pton(AF_INET6, ia_na_opts.getfieldval("addr"))
self.assert_equal(reported_address.address, address)
self.assert_equal(reported_address.preferred_time,
ia_na_opts.getfieldval("preflft"))
self.assert_equal(reported_address.valid_time,
ia_na_opts.getfieldval("validlft"))
finally:
self.vapi.want_dhcp6_reply_events(enable_disable=0)
def test_dhcp_pd_send_solicit_receive_advertise(self):
""" Verify DHCPv6 PD Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
prefix_bin = '\00\01\00\02\00\03' + '\00' * 10
prefix = {'prefix': prefix_bin,
'prefix_length': 50,
'preferred_time': 60,
'valid_time': 120}
self.vapi.dhcp6_pd_send_client_message(1, self.pg0.sw_if_index,
T1=20, T2=40, prefixes=[prefix])
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertTrue(packet.haslayer(IPv6))
self.assertTrue(packet[IPv6].haslayer(DHCP6_Solicit))
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_pd = packet[DHCP6OptIA_PD]
self.assert_equal(ia_pd.T1, 20)
self.assert_equal(ia_pd.T2, 40)
self.assert_equal(len(ia_pd.iapdopt), 1)
prefix = ia_pd.iapdopt[0]
self.assert_equal(prefix.prefix, '1:2:3::')
self.assert_equal(prefix.plen, 50)
self.assert_equal(prefix.preflft, 60)
self.assert_equal(prefix.validlft, 120)
self.vapi.want_dhcp6_pd_reply_events()
try:
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
validlft=120)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
DHCP6_Advertise(trid=trid) /
DHCP6OptServerId(duid=self.server_duid) /
DHCP6OptClientId(duid=client_duid) /
DHCP6OptPref(prefval=7) /
DHCP6OptStatusCode(statuscode=1) /
DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_prefix = ev.prefixes[0]
prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
self.assert_equal(reported_prefix.prefix, prefix)
self.assert_equal(reported_prefix.prefix_length,
ia_pd_opts.getfieldval("plen"))
self.assert_equal(reported_prefix.preferred_time,
ia_pd_opts.getfieldval("preflft"))
self.assert_equal(reported_prefix.valid_time,
ia_pd_opts.getfieldval("validlft"))
finally:
self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)
def ip6_normalize(ip6):
return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
def test_dhcp6_proxy(self):
""" DHCPv6 Proxy"""
#
# Verify no response to DHCP request without DHCP config
#
dhcp_solicit_dst = "ff02::1:2"
dhcp_solicit_src_vrf0 = mk_ll_addr(self.pg2.remote_mac)
dhcp_solicit_src_vrf1 = mk_ll_addr(self.pg3.remote_mac)
server_addr_vrf0 = self.pg0.remote_ip6n
src_addr_vrf0 = self.pg0.local_ip6n
server_addr_vrf1 = self.pg1.remote_ip6n
src_addr_vrf1 = self.pg1.local_ip6n
dmac = in6_getnsmac(inet_pton(socket.AF_INET6, dhcp_solicit_dst))
p_solicit_vrf0 = (
Ether(dst=dmac, src=self.pg2.remote_mac) /
IPv6(src=dhcp_solicit_src_vrf0, dst=dhcp_solicit_dst) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT) /
DHCP6_Solicit())
pkts_solicit_vrf0 = [p_solicit_vrf0]
p_solicit_vrf1 = (
Ether(dst=dmac, src=self.pg3.remote_mac) /
IPv6(src=dhcp_solicit_src_vrf1, dst=dhcp_solicit_dst) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT) /
DHCP6_Solicit())
pkts_solicit_vrf1 = [p_solicit_vrf1]
self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
"DHCP with no configuration")
self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
"DHCP with no configuration")
#
# DHCPv6 config in VRF 0.
# Packets still dropped because the client facing interface has no
# IPv6 config
#
self.vapi.dhcp_proxy_config(server_addr_vrf0,
src_addr_vrf0,
rx_table_id=0,
server_table_id=0,
is_ipv6=1)
self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
"DHCP with no configuration")
self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
"DHCP with no configuration")
#
# configure an IP address on the client facing interface
#
self.pg2.config_ip6()
#
# Now the DHCP requests are relayed to the server
#
self.pg2.add_stream(pkts_solicit_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(1)
rx = rx[0]
self.verify_dhcp6_solicit(rx, self.pg0, dhcp_solicit_src_vrf0,
self.pg2.remote_mac)
#
# Exception cases for rejected relay responses
#
# 1 - not a relay reply
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_Advertise())
pkts_adv_vrf0 = [p_adv_vrf0]
self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
"DHCP6 not a relay reply")
# 2 - no relay message option
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() / DHCP6_Advertise())
pkts_adv_vrf0 = [p_adv_vrf0]
self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
"DHCP not a relay message")
# 3 - no circuit ID
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() / DHCP6OptRelayMsg(optlen=0) /
DHCP6_Advertise())
pkts_adv_vrf0 = [p_adv_vrf0]
self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
"DHCP6 no circuit ID")
# 4 - wrong circuit ID
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise())
pkts_adv_vrf0 = [p_adv_vrf0]
self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
"DHCP6 wrong circuit ID")
#
# Send the relay response (the advertisement)
# - no peer address
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply() /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts_adv_vrf0 = [p_adv_vrf0]
self.pg0.add_stream(pkts_adv_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg2.get_capture(1)
rx = rx[0]
self.verify_dhcp6_advert(rx, self.pg2, "::")
#
# Send the relay response (the advertisement)
# - with peer address
p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf0) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts_adv_vrf0 = [p_adv_vrf0]
self.pg0.add_stream(pkts_adv_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg2.get_capture(1)
rx = rx[0]
self.verify_dhcp6_advert(rx, self.pg2, dhcp_solicit_src_vrf0)
#
# Add all the config for VRF 1
#
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
is_ipv6=1)
self.pg3.config_ip6()
#
# VRF 1 solicit
#
self.pg3.add_stream(pkts_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
self.verify_dhcp6_solicit(rx, self.pg1, dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
#
# VRF 1 Advert
#
p_adv_vrf1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
DHCP6OptRelayMsg(optlen=0) / DHCP6_Advertise(trid=1) /
DHCP6OptStatusCode(statuscode=0))
pkts_adv_vrf1 = [p_adv_vrf1]
self.pg1.add_stream(pkts_adv_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg3.get_capture(1)
rx = rx[0]
self.verify_dhcp6_advert(rx, self.pg3, dhcp_solicit_src_vrf1)
#
# Add VSS config
# table=1, fib=id=1, oui=4
self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1)
self.pg3.add_stream(pkts_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
self.verify_dhcp6_solicit(rx,
self.pg1,
dhcp_solicit_src_vrf1,
self.pg3.remote_mac,
fib_id=1,
oui=4)
#
# Remove the VSS config
# relayed DHCP has default vlaues in the option.
#
self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1, is_add=0)
self.pg3.add_stream(pkts_solicit_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
self.verify_dhcp6_solicit(rx, self.pg1, dhcp_solicit_src_vrf1,
self.pg3.remote_mac)
#
# Cleanup
#
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
rx_table_id=1,
server_table_id=1,
is_ipv6=1,
is_add=0)
self.vapi.dhcp_proxy_config(server_addr_vrf1,
src_addr_vrf1,
rx_table_id=0,
server_table_id=0,
is_ipv6=1,
is_add=0)
def test_dhcp_ia_na_send_solicit_receive_advertise(self):
""" Verify DHCPv6 IA NA Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
address_bin = '\00\01\00\02\00\03' + '\00' * 8 + '\00\05'
address = {'address': address_bin,
'preferred_time': 60,
'valid_time': 120}
self.vapi.dhcp6_send_client_message(msg_type=1,
sw_if_index=self.pg0.sw_if_index,
T1=20, T2=40, addresses=[address],
n_addresses=len([address]))
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertEqual(packet.haslayer(IPv6), 1)
self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_na = packet[DHCP6OptIA_NA]
self.assert_equal(ia_na.T1, 20)
self.assert_equal(ia_na.T2, 40)
self.assert_equal(len(ia_na.ianaopts), 1)
address = ia_na.ianaopts[0]
self.assert_equal(address.addr, '1:2:3::5')
self.assert_equal(address.preflft, 60)
self.assert_equal(address.validlft, 120)
self.vapi.want_dhcp6_reply_events()
try:
ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=60,
validlft=120)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=util.mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
DHCP6_Advertise(trid=trid) /
DHCP6OptServerId(duid=self.server_duid) /
DHCP6OptClientId(duid=client_duid) /
DHCP6OptPref(prefval=7) /
DHCP6OptStatusCode(statuscode=1) /
DHCP6OptIA_NA(iaid=1, T1=20, T2=40, ianaopts=ia_na_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_address = ev.addresses[0]
address = inet_pton(AF_INET6, ia_na_opts.getfieldval("addr"))
self.assert_equal(reported_address.address, address)
self.assert_equal(reported_address.preferred_time,
ia_na_opts.getfieldval("preflft"))
self.assert_equal(reported_address.valid_time,
ia_na_opts.getfieldval("validlft"))
finally:
self.vapi.want_dhcp6_reply_events(enable_disable=0)
def ip6_normalize(ip6):
return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
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_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 reconfiure 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(socket.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)
#
# Reset the periodic advertisements back to default values
#
self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
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_dhcp_pd_send_solicit_receive_advertise(self):
""" Verify DHCPv6 PD Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
prefix_bin = '\00\01\00\02\00\03' + '\00' * 10
prefix = {'prefix': prefix_bin,
'prefix_length': 50,
'preferred_time': 60,
'valid_time': 120}
self.vapi.dhcp6_pd_send_client_message(1, self.pg0.sw_if_index,
T1=20, T2=40, prefixes=[prefix])
rx_list = self.pg0.get_capture(1)
self.assertEqual(len(rx_list), 1)
packet = rx_list[0]
self.assertEqual(packet.haslayer(IPv6), 1)
self.assertEqual(packet[IPv6].haslayer(DHCP6_Solicit), 1)
client_duid = packet[DHCP6OptClientId].duid
trid = packet[DHCP6_Solicit].trid
dst = ip6_normalize(packet[IPv6].dst)
dst2 = ip6_normalize("ff02::1:2")
self.assert_equal(dst, dst2)
src = ip6_normalize(packet[IPv6].src)
src2 = ip6_normalize(self.pg0.local_ip6_ll)
self.assert_equal(src, src2)
ia_pd = packet[DHCP6OptIA_PD]
self.assert_equal(ia_pd.T1, 20)
self.assert_equal(ia_pd.T2, 40)
self.assert_equal(len(ia_pd.iapdopt), 1)
prefix = ia_pd.iapdopt[0]
self.assert_equal(prefix.prefix, '1:2:3::')
self.assert_equal(prefix.plen, 50)
self.assert_equal(prefix.preflft, 60)
self.assert_equal(prefix.validlft, 120)
self.vapi.want_dhcp6_pd_reply_events()
try:
ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
validlft=120)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=util.mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
DHCP6_Advertise(trid=trid) /
DHCP6OptServerId(duid=self.server_duid) /
DHCP6OptClientId(duid=client_duid) /
DHCP6OptPref(prefval=7) /
DHCP6OptStatusCode(statuscode=1) /
DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
)
self.pg0.add_stream([p])
self.pg_start()
ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
self.assert_equal(ev.preference, 7)
self.assert_equal(ev.status_code, 1)
self.assert_equal(ev.T1, 20)
self.assert_equal(ev.T2, 40)
reported_prefix = ev.prefixes[0]
prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
self.assert_equal(reported_prefix.prefix, prefix)
self.assert_equal(reported_prefix.prefix_length,
ia_pd_opts.getfieldval("plen"))
self.assert_equal(reported_prefix.preferred_time,
ia_pd_opts.getfieldval("preflft"))
self.assert_equal(reported_prefix.valid_time,
ia_pd_opts.getfieldval("validlft"))
finally:
self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)