| from socket import AF_INET6, inet_ntop, inet_pton |
| |
| from scapy.layers.dhcp6 import ( |
| DHCP6_Advertise, |
| DHCP6OptClientId, |
| DHCP6OptStatusCode, |
| DHCP6OptPref, |
| DHCP6OptIA_PD, |
| DHCP6OptIAPrefix, |
| DHCP6OptServerId, |
| DHCP6_Solicit, |
| DHCP6_Reply, |
| DHCP6_Request, |
| DHCP6_Renew, |
| DHCP6_Rebind, |
| DUID_LL, |
| DHCP6_Release, |
| DHCP6OptElapsedTime, |
| DHCP6OptIA_NA, |
| DHCP6OptIAAddress, |
| ) |
| from scapy.layers.inet6 import IPv6, Ether, UDP |
| |
| from framework import VppTestCase |
| from asfframework import tag_fixme_vpp_workers, tag_run_solo |
| from vpp_papi import VppEnum |
| import util |
| import os |
| |
| |
| def ip6_normalize(ip6): |
| return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6)) |
| |
| |
| class TestDHCPv6DataPlane(VppTestCase): |
| """DHCPv6 Data Plane Test Case""" |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestDHCPv6DataPlane, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestDHCPv6DataPlane, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestDHCPv6DataPlane, self).setUp() |
| |
| self.create_pg_interfaces(range(1)) |
| self.interfaces = list(self.pg_interfaces) |
| for i in self.interfaces: |
| i.admin_up() |
| i.config_ip6() |
| |
| self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac) |
| |
| def tearDown(self): |
| for i in self.interfaces: |
| i.unconfig_ip6() |
| i.admin_down() |
| super(TestDHCPv6DataPlane, self).tearDown() |
| |
| def test_dhcp_ia_na_send_solicit_receive_advertise(self): |
| """Verify DHCPv6 IA NA Solicit packet and Advertise event""" |
| |
| self.vapi.dhcp6_clients_enable_disable(enable=1) |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| address = {"address": "1:2:3::5", "preferred_time": 60, "valid_time": 120} |
| self.vapi.dhcp6_send_client_message( |
| server_index=0xFFFFFFFF, |
| mrc=1, |
| msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT, |
| 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(enable_disable=1, pid=os.getpid()) |
| |
| 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 = ia_na_opts.getfieldval("addr") |
| self.assert_equal(str(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) |
| self.vapi.dhcp6_clients_enable_disable(enable=0) |
| |
| def test_dhcp_pd_send_solicit_receive_advertise(self): |
| """Verify DHCPv6 PD Solicit packet and Advertise event""" |
| |
| self.vapi.dhcp6_clients_enable_disable(enable=1) |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| prefix = { |
| "prefix": {"address": "1:2:3::", "len": 50}, |
| "preferred_time": 60, |
| "valid_time": 120, |
| } |
| prefixes = [prefix] |
| self.vapi.dhcp6_pd_send_client_message( |
| server_index=0xFFFFFFFF, |
| mrc=1, |
| msg_type=VppEnum.vl_api_dhcpv6_msg_type_t.DHCPV6_MSG_API_SOLICIT, |
| sw_if_index=self.pg0.sw_if_index, |
| T1=20, |
| T2=40, |
| prefixes=prefixes, |
| n_prefixes=len(prefixes), |
| ) |
| 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(enable_disable=1, pid=os.getpid()) |
| |
| 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 = ia_pd_opts.getfieldval("prefix") |
| self.assert_equal(str(reported_prefix.prefix).split("/")[0], prefix) |
| self.assert_equal( |
| int(str(reported_prefix.prefix).split("/")[1]), |
| 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) |
| self.vapi.dhcp6_clients_enable_disable(enable=0) |
| |
| |
| @tag_run_solo |
| class TestDHCPv6IANAControlPlane(VppTestCase): |
| """DHCPv6 IA NA Control Plane Test Case""" |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestDHCPv6IANAControlPlane, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestDHCPv6IANAControlPlane, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestDHCPv6IANAControlPlane, self).setUp() |
| |
| self.create_pg_interfaces(range(1)) |
| self.interfaces = list(self.pg_interfaces) |
| for i in self.interfaces: |
| i.admin_up() |
| |
| self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac) |
| self.client_duid = None |
| self.T1 = 1 |
| self.T2 = 2 |
| |
| fib = self.vapi.ip_route_dump(0, True) |
| self.initial_addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| self.vapi.dhcp6_client_enable_disable( |
| sw_if_index=self.pg0.sw_if_index, enable=1 |
| ) |
| |
| def tearDown(self): |
| self.vapi.dhcp6_client_enable_disable( |
| sw_if_index=self.pg0.sw_if_index, enable=0 |
| ) |
| |
| for i in self.interfaces: |
| i.admin_down() |
| |
| super(TestDHCPv6IANAControlPlane, self).tearDown() |
| |
| @staticmethod |
| def get_interface_addresses(fib, pg): |
| lst = [] |
| for entry in fib: |
| if entry.route.prefix.prefixlen == 128: |
| path = entry.route.paths[0] |
| if path.sw_if_index == pg.sw_if_index: |
| lst.append(str(entry.route.prefix.network_address)) |
| return lst |
| |
| def get_addresses(self): |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| return addresses.difference(self.initial_addresses) |
| |
| def validate_duid_ll(self, duid): |
| DUID_LL(duid) |
| |
| def validate_packet(self, packet, msg_type, is_resend=False): |
| try: |
| self.assertEqual(packet.haslayer(msg_type), 1) |
| client_duid = packet[DHCP6OptClientId].duid |
| if self.client_duid is None: |
| self.client_duid = client_duid |
| self.validate_duid_ll(client_duid) |
| else: |
| self.assertEqual(self.client_duid, client_duid) |
| if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind: |
| server_duid = packet[DHCP6OptServerId].duid |
| self.assertEqual(server_duid, self.server_duid) |
| if is_resend: |
| self.assertEqual(self.trid, packet[msg_type].trid) |
| else: |
| self.trid = packet[msg_type].trid |
| ip = packet[IPv6] |
| udp = packet[UDP] |
| self.assertEqual(ip.dst, "ff02::1:2") |
| self.assertEqual(udp.sport, 546) |
| self.assertEqual(udp.dport, 547) |
| dhcpv6 = packet[msg_type] |
| elapsed_time = dhcpv6[DHCP6OptElapsedTime] |
| if is_resend: |
| self.assertNotEqual(elapsed_time.elapsedtime, 0) |
| else: |
| self.assertEqual(elapsed_time.elapsedtime, 0) |
| except BaseException: |
| packet.show() |
| raise |
| |
| def wait_for_packet(self, msg_type, timeout=None, is_resend=False): |
| if timeout is None: |
| timeout = 3 |
| rx_list = self.pg0.get_capture(1, timeout=timeout) |
| packet = rx_list[0] |
| self.validate_packet(packet, msg_type, is_resend=is_resend) |
| |
| def wait_for_solicit(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend) |
| |
| def wait_for_request(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend) |
| |
| def wait_for_renew(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend) |
| |
| def wait_for_rebind(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend) |
| |
| def wait_for_release(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend) |
| |
| def send_packet(self, msg_type, t1=None, t2=None, ianaopts=None): |
| if t1 is None: |
| t1 = self.T1 |
| if t2 is None: |
| t2 = self.T2 |
| if ianaopts is None: |
| opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2) |
| else: |
| opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2, ianaopts=ianaopts) |
| 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) |
| / msg_type(trid=self.trid) |
| / DHCP6OptServerId(duid=self.server_duid) |
| / DHCP6OptClientId(duid=self.client_duid) |
| / opt_ia_na |
| ) |
| self.pg0.add_stream([p]) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| def send_advertise(self, t1=None, t2=None, ianaopts=None): |
| self.send_packet(DHCP6_Advertise, t1, t2, ianaopts) |
| |
| def send_reply(self, t1=None, t2=None, ianaopts=None): |
| self.send_packet(DHCP6_Reply, t1, t2, ianaopts) |
| |
| def test_T1_and_T2_timeouts(self): |
| """Test T1 and T2 timeouts""" |
| |
| self.wait_for_solicit() |
| self.send_advertise() |
| self.wait_for_request() |
| self.send_reply() |
| |
| self.sleep(1) |
| |
| self.wait_for_renew() |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| |
| self.sleep(1) |
| |
| self.wait_for_rebind() |
| |
| 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(addr, "7:8::2") |
| |
| self.sleep(2) |
| |
| # check that the address is deleted |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| new_addresses = addresses.difference(self.initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| def test_sending_client_messages_solicit(self): |
| """VPP receives messages from DHCPv6 client""" |
| |
| self.wait_for_solicit() |
| self.send_packet(DHCP6_Solicit) |
| self.send_packet(DHCP6_Request) |
| self.send_packet(DHCP6_Renew) |
| self.send_packet(DHCP6_Rebind) |
| self.sleep(1) |
| self.wait_for_solicit(is_resend=True) |
| |
| def test_sending_inappropriate_packets(self): |
| """Server sends messages with inappropriate message types""" |
| |
| self.wait_for_solicit() |
| self.send_reply() |
| self.wait_for_solicit(is_resend=True) |
| self.send_advertise() |
| self.wait_for_request() |
| self.send_advertise() |
| self.wait_for_request(is_resend=True) |
| self.send_reply() |
| self.wait_for_renew() |
| |
| def test_no_address_available_in_advertise(self): |
| """Advertise message contains NoAddrsAvail status code""" |
| |
| self.wait_for_solicit() |
| noavail = DHCP6OptStatusCode(statuscode=2) # NoAddrsAvail |
| self.send_advertise(ianaopts=noavail) |
| self.wait_for_solicit(is_resend=True) |
| |
| def test_preferred_greater_than_valid_lifetime(self): |
| """Preferred lifetime is greater than valid lifetime""" |
| |
| self.wait_for_solicit() |
| self.send_advertise() |
| self.wait_for_request() |
| ia_na_opts = DHCP6OptIAAddress(addr="7:8::2", preflft=4, validlft=3) |
| self.send_reply(ianaopts=ia_na_opts) |
| |
| self.sleep(0.5) |
| |
| # check FIB contains no addresses |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| new_addresses = addresses.difference(self.initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| def test_T1_greater_than_T2(self): |
| """T1 is greater than T2""" |
| |
| self.wait_for_solicit() |
| self.send_advertise() |
| self.wait_for_request() |
| ia_na_opts = DHCP6OptIAAddress(addr="7:8::2", preflft=4, validlft=8) |
| self.send_reply(t1=80, t2=40, ianaopts=ia_na_opts) |
| |
| self.sleep(0.5) |
| |
| # check FIB contains no addresses |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg0)) |
| new_addresses = addresses.difference(self.initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| |
| @tag_fixme_vpp_workers |
| class TestDHCPv6PDControlPlane(VppTestCase): |
| """DHCPv6 PD Control Plane Test Case""" |
| |
| @classmethod |
| def setUpClass(cls): |
| super(TestDHCPv6PDControlPlane, cls).setUpClass() |
| |
| @classmethod |
| def tearDownClass(cls): |
| super(TestDHCPv6PDControlPlane, cls).tearDownClass() |
| |
| def setUp(self): |
| super(TestDHCPv6PDControlPlane, self).setUp() |
| |
| self.create_pg_interfaces(range(2)) |
| self.interfaces = list(self.pg_interfaces) |
| for i in self.interfaces: |
| i.admin_up() |
| |
| self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac) |
| self.client_duid = None |
| self.T1 = 1 |
| self.T2 = 2 |
| |
| fib = self.vapi.ip_route_dump(0, True) |
| self.initial_addresses = set(self.get_interface_addresses(fib, self.pg1)) |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| self.prefix_group = "my-pd-prefix-group" |
| |
| self.vapi.dhcp6_pd_client_enable_disable( |
| enable=1, sw_if_index=self.pg0.sw_if_index, prefix_group=self.prefix_group |
| ) |
| |
| def tearDown(self): |
| self.vapi.dhcp6_pd_client_enable_disable(self.pg0.sw_if_index, enable=0) |
| |
| for i in self.interfaces: |
| i.admin_down() |
| |
| super(TestDHCPv6PDControlPlane, self).tearDown() |
| |
| @staticmethod |
| def get_interface_addresses(fib, pg): |
| lst = [] |
| for entry in fib: |
| if entry.route.prefix.prefixlen == 128: |
| path = entry.route.paths[0] |
| if path.sw_if_index == pg.sw_if_index: |
| lst.append(str(entry.route.prefix.network_address)) |
| return lst |
| |
| def get_addresses(self): |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg1)) |
| return addresses.difference(self.initial_addresses) |
| |
| def validate_duid_ll(self, duid): |
| DUID_LL(duid) |
| |
| def validate_packet(self, packet, msg_type, is_resend=False): |
| try: |
| self.assertEqual(packet.haslayer(msg_type), 1) |
| client_duid = packet[DHCP6OptClientId].duid |
| if self.client_duid is None: |
| self.client_duid = client_duid |
| self.validate_duid_ll(client_duid) |
| else: |
| self.assertEqual(self.client_duid, client_duid) |
| if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind: |
| server_duid = packet[DHCP6OptServerId].duid |
| self.assertEqual(server_duid, self.server_duid) |
| if is_resend: |
| self.assertEqual(self.trid, packet[msg_type].trid) |
| else: |
| self.trid = packet[msg_type].trid |
| ip = packet[IPv6] |
| udp = packet[UDP] |
| self.assertEqual(ip.dst, "ff02::1:2") |
| self.assertEqual(udp.sport, 546) |
| self.assertEqual(udp.dport, 547) |
| dhcpv6 = packet[msg_type] |
| elapsed_time = dhcpv6[DHCP6OptElapsedTime] |
| if is_resend: |
| self.assertNotEqual(elapsed_time.elapsedtime, 0) |
| else: |
| self.assertEqual(elapsed_time.elapsedtime, 0) |
| except BaseException: |
| packet.show() |
| raise |
| |
| def wait_for_packet(self, msg_type, timeout=None, is_resend=False): |
| if timeout is None: |
| timeout = 3 |
| rx_list = self.pg0.get_capture(1, timeout=timeout) |
| packet = rx_list[0] |
| self.validate_packet(packet, msg_type, is_resend=is_resend) |
| |
| def wait_for_solicit(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend) |
| |
| def wait_for_request(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend) |
| |
| def wait_for_renew(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend) |
| |
| def wait_for_rebind(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend) |
| |
| def wait_for_release(self, timeout=None, is_resend=False): |
| self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend) |
| |
| def send_packet(self, msg_type, t1=None, t2=None, iapdopt=None): |
| if t1 is None: |
| t1 = self.T1 |
| if t2 is None: |
| t2 = self.T2 |
| if iapdopt is None: |
| opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2) |
| else: |
| opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2, iapdopt=iapdopt) |
| 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) |
| / msg_type(trid=self.trid) |
| / DHCP6OptServerId(duid=self.server_duid) |
| / DHCP6OptClientId(duid=self.client_duid) |
| / opt_ia_pd |
| ) |
| self.pg0.add_stream([p]) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| def send_advertise(self, t1=None, t2=None, iapdopt=None): |
| self.send_packet(DHCP6_Advertise, t1, t2, iapdopt) |
| |
| def send_reply(self, t1=None, t2=None, iapdopt=None): |
| self.send_packet(DHCP6_Reply, t1, t2, iapdopt) |
| |
| def test_T1_and_T2_timeouts(self): |
| """Test T1 and T2 timeouts""" |
| |
| self.wait_for_solicit() |
| self.send_advertise() |
| self.wait_for_request() |
| self.send_reply() |
| |
| self.sleep(1) |
| |
| self.wait_for_renew() |
| |
| self.pg_enable_capture(self.pg_interfaces) |
| |
| self.sleep(1) |
| |
| self.wait_for_rebind() |
| |
| def test_prefixes(self): |
| """Test handling of prefixes""" |
| |
| address1 = "::2:0:0:0:405/60" |
| address2 = "::76:0:0:0:406/62" |
| try: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address1, |
| prefix_group=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(addr, "7:8:0:2::405") |
| |
| self.sleep(1) |
| |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address2, |
| prefix_group=self.prefix_group, |
| ) |
| |
| self.sleep(1) |
| |
| # check FIB contains 2 addresses |
| fib = self.vapi.ip_route_dump(0, True) |
| 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 addr1 == "7:8:0:76::406": |
| addr1, addr2 = addr2, addr1 |
| self.assertEqual(addr1, "7:8:0:2::405") |
| self.assertEqual(addr2, "7:8:0:76::406") |
| |
| self.sleep(1) |
| |
| # check that the addresses are deleted |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg1)) |
| new_addresses = addresses.difference(self.initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| finally: |
| if address1 is not None: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address1, |
| prefix_group=self.prefix_group, |
| is_add=0, |
| ) |
| if address2 is not None: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address2, |
| prefix_group=self.prefix_group, |
| is_add=0, |
| ) |
| |
| def test_sending_client_messages_solicit(self): |
| """VPP receives messages from DHCPv6 client""" |
| |
| self.wait_for_solicit() |
| self.send_packet(DHCP6_Solicit) |
| self.send_packet(DHCP6_Request) |
| self.send_packet(DHCP6_Renew) |
| self.send_packet(DHCP6_Rebind) |
| self.sleep(1) |
| self.wait_for_solicit(is_resend=True) |
| |
| def test_sending_inappropriate_packets(self): |
| """Server sends messages with inappropriate message types""" |
| |
| self.wait_for_solicit() |
| self.send_reply() |
| self.wait_for_solicit(is_resend=True) |
| self.send_advertise() |
| self.wait_for_request() |
| self.send_advertise() |
| self.wait_for_request(is_resend=True) |
| self.send_reply() |
| self.wait_for_renew() |
| |
| def test_no_prefix_available_in_advertise(self): |
| """Advertise message contains NoPrefixAvail status code""" |
| |
| self.wait_for_solicit() |
| noavail = DHCP6OptStatusCode(statuscode=6) # NoPrefixAvail |
| self.send_advertise(iapdopt=noavail) |
| self.wait_for_solicit(is_resend=True) |
| |
| def test_preferred_greater_than_valid_lifetime(self): |
| """Preferred lifetime is greater than valid lifetime""" |
| |
| address1 = "::2:0:0:0:405/60" |
| try: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address1, |
| prefix_group=self.prefix_group, |
| ) |
| |
| self.wait_for_solicit() |
| self.send_advertise() |
| self.wait_for_request() |
| ia_pd_opts = DHCP6OptIAPrefix( |
| prefix="7:8::", plen=56, preflft=4, validlft=3 |
| ) |
| self.send_reply(iapdopt=ia_pd_opts) |
| |
| self.sleep(0.5) |
| |
| # check FIB contains no addresses |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg1)) |
| new_addresses = addresses.difference(self.initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| finally: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address1, |
| prefix_group=self.prefix_group, |
| is_add=0, |
| ) |
| |
| def test_T1_greater_than_T2(self): |
| """T1 is greater than T2""" |
| |
| address1 = "::2:0:0:0:405/60" |
| try: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| address_with_prefix=address1, |
| prefix_group=self.prefix_group, |
| ) |
| |
| self.wait_for_solicit() |
| self.send_advertise() |
| self.wait_for_request() |
| ia_pd_opts = DHCP6OptIAPrefix( |
| prefix="7:8::", plen=56, preflft=4, validlft=8 |
| ) |
| self.send_reply(t1=80, t2=40, iapdopt=ia_pd_opts) |
| |
| self.sleep(0.5) |
| |
| # check FIB contains no addresses |
| fib = self.vapi.ip_route_dump(0, True) |
| addresses = set(self.get_interface_addresses(fib, self.pg1)) |
| new_addresses = addresses.difference(self.initial_addresses) |
| self.assertEqual(len(new_addresses), 0) |
| |
| finally: |
| self.vapi.ip6_add_del_address_using_prefix( |
| sw_if_index=self.pg1.sw_if_index, |
| prefix_group=self.prefix_group, |
| address_with_prefix=address1, |
| is_add=False, |
| ) |