-#!/usr/bin/env python
+#!/usr/bin/env python3
import unittest
import socket
import struct
+import six
from framework import VppTestCase, VppTestRunner
+from framework import tag_run_solo
from vpp_neighbor import VppNeighbor
-
-from scapy.layers.l2 import Ether, getmacbyip
+from vpp_ip_route import find_route, VppIpTable
+from util import mk_ll_addr
+import scapy.compat
+from scapy.layers.l2 import Ether, getmacbyip, ARP, Dot1Q
from scapy.layers.inet import IP, UDP, ICMP
-from scapy.layers.inet6 import IPv6, in6_getnsmac, in6_mactoifaceid
+from scapy.layers.inet6 import IPv6, in6_getnsmac
+from scapy.utils6 import in6_mactoifaceid
from scapy.layers.dhcp import DHCP, BOOTP, DHCPTypes
-from scapy.layers.dhcp6 import DHCP6, DHCP6_Solicit, DHCP6_RelayForward, \
- DHCP6_RelayReply, DHCP6_Advertise, DHCP6OptRelayMsg, DHCP6OptIfaceId, \
- DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr, DHCP6_Request
-from socket import AF_INET, AF_INET6
-from scapy.utils import inet_pton, inet_ntop
+from scapy.layers.dhcp6 import (
+ DHCP6,
+ DHCP6_Solicit,
+ DHCP6_RelayForward,
+ DHCP6_RelayReply,
+ DHCP6_Advertise,
+ DHCP6OptRelayMsg,
+ DHCP6OptIfaceId,
+ DHCP6OptStatusCode,
+ DHCP6OptVSS,
+ DHCP6OptClientLinkLayerAddr,
+ DHCP6_Request,
+)
+from socket import AF_INET, AF_INET6, inet_pton, inet_ntop
from scapy.utils6 import in6_ptop
+from vpp_papi import mac_pton, VppEnum
+from vpp_sub_interface import VppDot1QSubint
+from vpp_qos import VppQosEgressMap, VppQosMark
+from vpp_dhcp import VppDHCPClient, VppDHCPProxy
+
DHCP4_CLIENT_PORT = 68
DHCP4_SERVER_PORT = 67
DHCP6_SERVER_PORT = 546
-def mk_ll_addr(mac):
-
- euid = in6_mactoifaceid(mac)
- addr = "fe80::" + euid
- return addr
+@tag_run_solo
+class TestDHCP(VppTestCase):
+ """DHCP Test Case"""
+ @classmethod
+ def setUpClass(cls):
+ super(TestDHCP, cls).setUpClass()
-class TestDHCP(VppTestCase):
- """ DHCP Test Case """
+ @classmethod
+ def tearDownClass(cls):
+ super(TestDHCP, cls).tearDownClass()
def setUp(self):
super(TestDHCP, self).setUp()
- # create 3 pg interfaces
- self.create_pg_interfaces(range(4))
+ # create 6 pg interfaces for pg0 to pg5
+ self.create_pg_interfaces(range(6))
+ self.tables = []
+
+ # pg0 to 2 are IP configured in VRF 0, 1 and 2.
+ # pg3 to 5 are non IP-configured in VRF 0, 1 and 2.
+ table_id = 0
+ for table_id in range(1, 4):
+ tbl4 = VppIpTable(self, table_id)
+ tbl4.add_vpp_config()
+ self.tables.append(tbl4)
+ tbl6 = VppIpTable(self, table_id, is_ip6=1)
+ tbl6.add_vpp_config()
+ self.tables.append(tbl6)
- # pg0 and 1 are IP configured in VRF 0 and 1.
- # pg2 and 3 are non IP-configured in VRF 0 and 1
table_id = 0
- for i in self.pg_interfaces[:2]:
+ for i in self.pg_interfaces[:3]:
i.admin_up()
i.set_table_ip4(table_id)
i.set_table_ip6(table_id)
table_id += 1
table_id = 0
- for i in self.pg_interfaces[2:]:
+ for i in self.pg_interfaces[3:]:
i.admin_up()
i.set_table_ip4(table_id)
i.set_table_ip6(table_id)
table_id += 1
def tearDown(self):
- super(TestDHCP, self).tearDown()
- for i in self.pg_interfaces:
+ for i in self.pg_interfaces[:3]:
i.unconfig_ip4()
i.unconfig_ip6()
- i.admin_down()
- def send_and_assert_no_replies(self, intf, pkts, remark):
- intf.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
for i in self.pg_interfaces:
- i.assert_nothing_captured(remark=remark)
+ i.set_table_ip4(0)
+ i.set_table_ip6(0)
+ i.admin_down()
+ super(TestDHCP, self).tearDown()
+
+ def verify_dhcp_has_option(self, pkt, option, value):
+ dhcp = pkt[DHCP]
+ found = False
+
+ for i in dhcp.options:
+ if isinstance(i, tuple):
+ if i[0] == option:
+ self.assertEqual(i[1], value)
+ found = True
+
+ self.assertTrue(found)
- def validate_relay_options(self, pkt, intf, ip_addr, fib_id, oui):
+ def validate_relay_options(self, pkt, intf, ip_addr, vpn_id, fib_id, oui):
dhcp = pkt[DHCP]
found = 0
data = []
+ id_len = len(vpn_id)
for i in dhcp.options:
- if type(i) is tuple:
+ if isinstance(i, tuple):
if i[0] == "relay_agent_Information":
#
# There are two sb-options present - each of length 6.
data = i[1]
if oui != 0:
self.assertEqual(len(data), 24)
+ elif len(vpn_id) > 0:
+ self.assertEqual(len(data), len(vpn_id) + 17)
else:
self.assertEqual(len(data), 12)
# The ID space is VPP internal - so no matching value
# scapy
#
- self.assertEqual(ord(data[0]), 1)
- self.assertEqual(ord(data[1]), 4)
- self.assertEqual(ord(data[2]), 0)
- self.assertEqual(ord(data[3]), 0)
- self.assertEqual(ord(data[4]), 0)
- self.assertEqual(ord(data[5]), intf._sw_if_index)
+ self.assertEqual(six.byte2int(data[0:1]), 1)
+ self.assertEqual(six.byte2int(data[1:2]), 4)
+ self.assertEqual(six.byte2int(data[2:3]), 0)
+ self.assertEqual(six.byte2int(data[3:4]), 0)
+ self.assertEqual(six.byte2int(data[4:5]), 0)
+ self.assertEqual(six.byte2int(data[5:6]), intf._sw_if_index)
#
# next sub-option is the IP address of the client side
#
claddr = socket.inet_pton(AF_INET, ip_addr)
- self.assertEqual(ord(data[6]), 5)
- self.assertEqual(ord(data[7]), 4)
+ self.assertEqual(six.byte2int(data[6:7]), 5)
+ self.assertEqual(six.byte2int(data[7:8]), 4)
self.assertEqual(data[8], claddr[0])
self.assertEqual(data[9], claddr[1])
self.assertEqual(data[10], claddr[2])
self.assertEqual(data[11], claddr[3])
if oui != 0:
- # sub-option 151 encodes the 3 byte oui
- # and the 4 byte fib_id
- self.assertEqual(ord(data[12]), 151)
- self.assertEqual(ord(data[13]), 8)
- self.assertEqual(ord(data[14]), 1)
- self.assertEqual(ord(data[15]), 0)
- self.assertEqual(ord(data[16]), 0)
- self.assertEqual(ord(data[17]), oui)
- self.assertEqual(ord(data[18]), 0)
- self.assertEqual(ord(data[19]), 0)
- self.assertEqual(ord(data[20]), 0)
- self.assertEqual(ord(data[21]), fib_id)
+ # sub-option 151 encodes vss_type 1,
+ # the 3 byte oui and the 4 byte fib_id
+ self.assertEqual(id_len, 0)
+ self.assertEqual(six.byte2int(data[12:13]), 151)
+ self.assertEqual(six.byte2int(data[13:14]), 8)
+ self.assertEqual(six.byte2int(data[14:15]), 1)
+ self.assertEqual(six.byte2int(data[15:16]), 0)
+ self.assertEqual(six.byte2int(data[16:17]), 0)
+ self.assertEqual(six.byte2int(data[17:18]), oui)
+ self.assertEqual(six.byte2int(data[18:19]), 0)
+ self.assertEqual(six.byte2int(data[19:20]), 0)
+ self.assertEqual(six.byte2int(data[20:21]), 0)
+ self.assertEqual(six.byte2int(data[21:22]), fib_id)
+
+ # VSS control sub-option
+ self.assertEqual(six.byte2int(data[22:23]), 152)
+ self.assertEqual(six.byte2int(data[23:24]), 0)
+
+ if id_len > 0:
+ # sub-option 151 encode vss_type of 0
+ # followerd by vpn_id in ascii
+ self.assertEqual(oui, 0)
+ self.assertEqual(six.byte2int(data[12:13]), 151)
+ self.assertEqual(six.byte2int(data[13:14]), id_len + 1)
+ self.assertEqual(six.byte2int(data[14:15]), 0)
+ self.assertEqual(data[15 : 15 + id_len].decode("ascii"), vpn_id)
# VSS control sub-option
- self.assertEqual(ord(data[22]), 152)
- self.assertEqual(ord(data[23]), 0)
+ self.assertEqual(
+ six.byte2int(data[15 + len(vpn_id) : 16 + len(vpn_id)]), 152
+ )
+ self.assertEqual(
+ six.byte2int(data[16 + len(vpn_id) : 17 + len(vpn_id)]), 0
+ )
found = 1
self.assertTrue(found)
return data
- def verify_dhcp_offer(self, pkt, intf, fib_id=0, oui=0):
+ def verify_dhcp_msg_type(self, pkt, name):
+ dhcp = pkt[DHCP]
+ found = False
+ for o in dhcp.options:
+ if isinstance(o, tuple):
+ if o[0] == "message-type" and DHCPTypes[o[1]] == name:
+ found = True
+ self.assertTrue(found)
+
+ def verify_dhcp_offer(self, pkt, intf, vpn_id="", fib_id=0, oui=0):
ether = pkt[Ether]
self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
self.assertEqual(ether.src, intf.local_mac)
self.assertEqual(udp.dport, DHCP4_CLIENT_PORT)
self.assertEqual(udp.sport, DHCP4_SERVER_PORT)
- dhcp = pkt[DHCP]
- is_offer = False
- for o in dhcp.options:
- if type(o) is tuple:
- if o[0] == "message-type" \
- and DHCPTypes[o[1]] == "offer":
- is_offer = True
- self.assertTrue(is_offer)
+ self.verify_dhcp_msg_type(pkt, "offer")
+ data = self.validate_relay_options(
+ pkt, intf, intf.local_ip4, vpn_id, fib_id, oui
+ )
+
+ def verify_orig_dhcp_pkt(self, pkt, intf, dscp, l2_bc=True):
+ ether = pkt[Ether]
+ if l2_bc:
+ self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
+ else:
+ self.assertEqual(ether.dst, intf.remote_mac)
+ self.assertEqual(ether.src, intf.local_mac)
+
+ ip = pkt[IP]
+
+ if l2_bc:
+ self.assertEqual(ip.dst, "255.255.255.255")
+ self.assertEqual(ip.src, "0.0.0.0")
+ else:
+ self.assertEqual(ip.dst, intf.remote_ip4)
+ self.assertEqual(ip.src, intf.local_ip4)
+ self.assertEqual(ip.tos, dscp)
- data = self.validate_relay_options(pkt, intf, intf.local_ip4,
- fib_id, oui)
+ udp = pkt[UDP]
+ self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
+ self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
- def verify_dhcp_discover(self, pkt, intf, src_intf=None, fib_id=0, oui=0,
- dst_mac=None, dst_ip=None):
+ def verify_orig_dhcp_discover(
+ self, pkt, intf, hostname, client_id=None, broadcast=True, dscp=0
+ ):
+ self.verify_orig_dhcp_pkt(pkt, intf, dscp)
+
+ self.verify_dhcp_msg_type(pkt, "discover")
+ self.verify_dhcp_has_option(pkt, "hostname", hostname.encode("ascii"))
+ if client_id:
+ client_id = "\x00" + client_id
+ self.verify_dhcp_has_option(pkt, "client_id", client_id.encode("ascii"))
+ bootp = pkt[BOOTP]
+ self.assertEqual(bootp.ciaddr, "0.0.0.0")
+ self.assertEqual(bootp.giaddr, "0.0.0.0")
+ if broadcast:
+ self.assertEqual(bootp.flags, 0x8000)
+ else:
+ self.assertEqual(bootp.flags, 0x0000)
+
+ def verify_orig_dhcp_request(
+ self, pkt, intf, hostname, ip, broadcast=True, l2_bc=True, dscp=0
+ ):
+ self.verify_orig_dhcp_pkt(pkt, intf, dscp, l2_bc=l2_bc)
+
+ self.verify_dhcp_msg_type(pkt, "request")
+ self.verify_dhcp_has_option(pkt, "hostname", hostname.encode("ascii"))
+ self.verify_dhcp_has_option(pkt, "requested_addr", ip)
+ bootp = pkt[BOOTP]
+
+ if l2_bc:
+ self.assertEqual(bootp.ciaddr, "0.0.0.0")
+ else:
+ self.assertEqual(bootp.ciaddr, intf.local_ip4)
+ self.assertEqual(bootp.giaddr, "0.0.0.0")
+
+ if broadcast:
+ self.assertEqual(bootp.flags, 0x8000)
+ else:
+ self.assertEqual(bootp.flags, 0x0000)
+
+ def verify_relayed_dhcp_discover(
+ self,
+ pkt,
+ intf,
+ src_intf=None,
+ fib_id=0,
+ oui=0,
+ vpn_id="",
+ dst_mac=None,
+ dst_ip=None,
+ ):
if not dst_mac:
dst_mac = intf.remote_mac
if not dst_ip:
is_discover = False
for o in dhcp.options:
- if type(o) is tuple:
- if o[0] == "message-type" \
- and DHCPTypes[o[1]] == "discover":
+ if isinstance(o, tuple):
+ if o[0] == "message-type" and DHCPTypes[o[1]] == "discover":
is_discover = True
self.assertTrue(is_discover)
- data = self.validate_relay_options(pkt, src_intf,
- src_intf.local_ip4,
- fib_id, oui)
+ data = self.validate_relay_options(
+ pkt, src_intf, src_intf.local_ip4, vpn_id, fib_id, oui
+ )
return data
- def verify_dhcp6_solicit(self, pkt, intf,
- peer_ip, peer_mac,
- fib_id=0,
- oui=0,
- dst_mac=None,
- dst_ip=None):
+ def verify_dhcp6_solicit(
+ self,
+ pkt,
+ intf,
+ peer_ip,
+ peer_mac,
+ vpn_id="",
+ fib_id=0,
+ oui=0,
+ dst_mac=None,
+ dst_ip=None,
+ ):
if not dst_mac:
dst_mac = intf.remote_mac
if not dst_ip:
self.assertEqual(cll.lltype, 1)
self.assertEqual(cll.clladdr, peer_mac)
+ id_len = len(vpn_id)
+
if fib_id != 0:
+ self.assertEqual(id_len, 0)
vss = pkt[DHCP6OptVSS]
self.assertEqual(vss.optlen, 8)
self.assertEqual(vss.type, 1)
# the OUI and FIB-id are really 3 and 4 bytes resp.
# but the tested range is small
- self.assertEqual(ord(vss.data[0]), 0)
- self.assertEqual(ord(vss.data[1]), 0)
- self.assertEqual(ord(vss.data[2]), oui)
- self.assertEqual(ord(vss.data[3]), 0)
- self.assertEqual(ord(vss.data[4]), 0)
- self.assertEqual(ord(vss.data[5]), 0)
- self.assertEqual(ord(vss.data[6]), fib_id)
+ self.assertEqual(six.byte2int(vss.data[0:1]), 0)
+ self.assertEqual(six.byte2int(vss.data[1:2]), 0)
+ self.assertEqual(six.byte2int(vss.data[2:3]), oui)
+ self.assertEqual(six.byte2int(vss.data[3:4]), 0)
+ self.assertEqual(six.byte2int(vss.data[4:5]), 0)
+ self.assertEqual(six.byte2int(vss.data[5:6]), 0)
+ self.assertEqual(six.byte2int(vss.data[6:7]), fib_id)
+
+ if id_len > 0:
+ self.assertEqual(oui, 0)
+ vss = pkt[DHCP6OptVSS]
+ self.assertEqual(vss.optlen, id_len + 1)
+ self.assertEqual(vss.type, 0)
+ self.assertEqual(vss.data[0:id_len].decode("ascii"), vpn_id)
# the relay message should be an encoded Solicit
msg = pkt[DHCP6OptRelayMsg]
sol = DHCP6_Solicit()
- self.assertEqual(msg.optlen, len(str(sol)))
- self.assertEqual(str(sol), (str(msg[1]))[:msg.optlen])
+ self.assertEqual(msg.optlen, len(sol))
+ self.assertEqual(sol, msg[1])
def verify_dhcp6_advert(self, pkt, intf, peer):
ether = pkt[Ether]
# not sure why this is not decoding
# adv = pkt[DHCP6_Advertise]
+ def wait_for_no_route(self, address, length, n_tries=50, s_time=1):
+ while n_tries:
+ if not find_route(self, address, length):
+ return True
+ n_tries = n_tries - 1
+ self.sleep(s_time)
+
+ return False
+
def test_dhcp_proxy(self):
- """ DHCPv4 Proxy """
+ """DHCPv4 Proxy"""
#
# Verify no response to DHCP request without DHCP config
#
- p_disc_vrf0 = (Ether(dst="ff:ff:ff:ff:ff:ff",
- src=self.pg2.remote_mac) /
- IP(src="0.0.0.0", dst="255.255.255.255") /
- UDP(sport=DHCP4_CLIENT_PORT,
- dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'discover'), ('end')]))
+ p_disc_vrf0 = (
+ Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg3.remote_mac)
+ / IP(src="0.0.0.0", dst="255.255.255.255")
+ / UDP(sport=DHCP4_CLIENT_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(options=[("message-type", "discover"), ("end")])
+ )
pkts_disc_vrf0 = [p_disc_vrf0]
- p_disc_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
- src=self.pg3.remote_mac) /
- IP(src="0.0.0.0", dst="255.255.255.255") /
- UDP(sport=DHCP4_CLIENT_PORT,
- dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'discover'), ('end')]))
- pkts_disc_vrf1 = [p_disc_vrf0]
-
- self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
- "DHCP with no configuration")
- self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
- "DHCP with no configuration")
+ p_disc_vrf1 = (
+ Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg4.remote_mac)
+ / IP(src="0.0.0.0", dst="255.255.255.255")
+ / UDP(sport=DHCP4_CLIENT_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(options=[("message-type", "discover"), ("end")])
+ )
+ pkts_disc_vrf1 = [p_disc_vrf1]
+ p_disc_vrf2 = (
+ Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg5.remote_mac)
+ / IP(src="0.0.0.0", dst="255.255.255.255")
+ / UDP(sport=DHCP4_CLIENT_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(options=[("message-type", "discover"), ("end")])
+ )
+ pkts_disc_vrf2 = [p_disc_vrf2]
+
+ self.send_and_assert_no_replies(
+ self.pg3, pkts_disc_vrf0, "DHCP with no configuration"
+ )
+ self.send_and_assert_no_replies(
+ self.pg4, pkts_disc_vrf1, "DHCP with no configuration"
+ )
+ self.send_and_assert_no_replies(
+ self.pg5, pkts_disc_vrf2, "DHCP with no configuration"
+ )
#
# Enable DHCP proxy in VRF 0
#
- server_addr = self.pg0.remote_ip4n
- src_addr = self.pg0.local_ip4n
+ server_addr = self.pg0.remote_ip4
+ src_addr = self.pg0.local_ip4
- self.vapi.dhcp_proxy_config(server_addr,
- src_addr,
- rx_table_id=0)
+ Proxy = VppDHCPProxy(self, server_addr, src_addr, rx_vrf_id=0)
+ Proxy.add_vpp_config()
#
# Discover packets from the client are dropped because there is no
# IP address configured on the client facing interface
#
- self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
- "Discover DHCP no relay address")
+ self.send_and_assert_no_replies(
+ self.pg3, pkts_disc_vrf0, "Discover DHCP no relay address"
+ )
#
# Inject a response from the server
# dropped, because there is no IP addrees on the
# client interfce to fill in the option.
#
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'), ('end')]))
+ p = (
+ Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(options=[("message-type", "offer"), ("end")])
+ )
pkts = [p]
- self.send_and_assert_no_replies(self.pg2, pkts,
- "Offer DHCP no relay address")
+ self.send_and_assert_no_replies(self.pg3, pkts, "Offer DHCP no relay address")
#
# configure an IP address on the client facing interface
#
- self.pg2.config_ip4()
+ self.pg3.config_ip4()
#
# Try again with a discover packet
# UDP source ports are unchanged
# we've no option 82 config so that should be absent
#
- self.pg2.add_stream(pkts_disc_vrf0)
+ self.pg3.add_stream(pkts_disc_vrf0)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(1)
rx = rx[0]
- option_82 = self.verify_dhcp_discover(rx, self.pg0, src_intf=self.pg2)
+ option_82 = self.verify_relayed_dhcp_discover(rx, self.pg0, src_intf=self.pg3)
#
# Create an DHCP offer reply from the server with a correctly formatted
# option 82. i.e. send back what we just captured
# The offer, sent mcast to the client, still has option 82.
#
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'),
- ('relay_agent_Information', option_82),
- ('end')]))
+ p = (
+ Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("relay_agent_Information", option_82),
+ ("end"),
+ ]
+ )
+ )
pkts = [p]
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- rx = self.pg2.get_capture(1)
+ rx = self.pg3.get_capture(1)
rx = rx[0]
- self.verify_dhcp_offer(rx, self.pg2)
+ self.verify_dhcp_offer(rx, self.pg3)
#
# Bogus Option 82:
#
# 1. not our IP address = not checked by VPP? so offer is replayed
# to client
- bad_ip = option_82[0:8] + chr(33) + option_82[9:]
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'),
- ('relay_agent_Information', bad_ip),
- ('end')]))
+ bad_ip = option_82[0:8] + scapy.compat.chb(33) + option_82[9:]
+
+ p = (
+ Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("relay_agent_Information", bad_ip),
+ ("end"),
+ ]
+ )
+ )
pkts = [p]
- self.send_and_assert_no_replies(self.pg0, pkts,
- "DHCP offer option 82 bad address")
+ self.send_and_assert_no_replies(
+ self.pg0, pkts, "DHCP offer option 82 bad address"
+ )
# 2. Not a sw_if_index VPP knows
- bad_if_index = option_82[0:2] + chr(33) + option_82[3:]
-
- p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'),
- ('relay_agent_Information', bad_if_index),
- ('end')]))
+ bad_if_index = option_82[0:2] + scapy.compat.chb(33) + option_82[3:]
+
+ p = (
+ Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
+ / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("relay_agent_Information", bad_if_index),
+ ("end"),
+ ]
+ )
+ )
pkts = [p]
- self.send_and_assert_no_replies(self.pg0, pkts,
- "DHCP offer option 82 bad if index")
+ self.send_and_assert_no_replies(
+ self.pg0, pkts, "DHCP offer option 82 bad if index"
+ )
#
# Send a DHCP request in VRF 1. should be dropped.
#
- self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
- "DHCP with no configuration VRF 1")
+ self.send_and_assert_no_replies(
+ self.pg4, pkts_disc_vrf1, "DHCP with no configuration VRF 1"
+ )
#
# Delete the DHCP config in VRF 0
# Should now drop requests.
#
- self.vapi.dhcp_proxy_config(server_addr,
- src_addr,
- rx_table_id=0,
- is_add=0)
+ Proxy.remove_vpp_config()
- self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
- "DHCP config removed VRF 0")
- self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
- "DHCP config removed VRF 1")
+ self.send_and_assert_no_replies(
+ self.pg3, pkts_disc_vrf0, "DHCP config removed VRF 0"
+ )
+ self.send_and_assert_no_replies(
+ self.pg4, pkts_disc_vrf1, "DHCP config removed VRF 1"
+ )
#
- # Add DHCP config for VRF 1
+ # Add DHCP config for VRF 1 & 2
#
- server_addr = self.pg1.remote_ip4n
- src_addr = self.pg1.local_ip4n
- self.vapi.dhcp_proxy_config(server_addr,
- src_addr,
- rx_table_id=1,
- server_table_id=1)
+ server_addr1 = self.pg1.remote_ip4
+ src_addr1 = self.pg1.local_ip4
+ Proxy1 = VppDHCPProxy(
+ self, server_addr1, src_addr1, rx_vrf_id=1, server_vrf_id=1
+ )
+ Proxy1.add_vpp_config()
+
+ server_addr2 = self.pg2.remote_ip4
+ src_addr2 = self.pg2.local_ip4
+ Proxy2 = VppDHCPProxy(
+ self, server_addr2, src_addr2, rx_vrf_id=2, server_vrf_id=2
+ )
+ Proxy2.add_vpp_config()
#
- # Confim DHCP requests ok in VRF 1.
+ # Confim DHCP requests ok in VRF 1 & 2.
# - dropped on IP config on client interface
#
- self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
- "DHCP config removed VRF 1")
+ self.send_and_assert_no_replies(
+ self.pg4, pkts_disc_vrf1, "DHCP config removed VRF 1"
+ )
+ self.send_and_assert_no_replies(
+ self.pg5, pkts_disc_vrf2, "DHCP config removed VRF 2"
+ )
#
# configure an IP address on the client facing interface
#
- self.pg3.config_ip4()
-
- self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg4.config_ip4()
+ self.pg4.add_stream(pkts_disc_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
-
rx = self.pg1.get_capture(1)
rx = rx[0]
- self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
+ self.verify_relayed_dhcp_discover(rx, self.pg1, src_intf=self.pg4)
+
+ self.pg5.config_ip4()
+ self.pg5.add_stream(pkts_disc_vrf2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg2.get_capture(1)
+ rx = rx[0]
+ self.verify_relayed_dhcp_discover(rx, self.pg2, src_intf=self.pg5)
#
# Add VSS config
- # table=1, fib=id=1, oui=4
- self.vapi.dhcp_proxy_set_vss(1, 1, 4)
-
- self.pg3.add_stream(pkts_disc_vrf1)
+ # table=1, vss_type=1, vpn_index=1, oui=4
+ # table=2, vss_type=0, vpn_id = "ip4-table-2"
+ self.vapi.dhcp_proxy_set_vss(tbl_id=1, vss_type=1, vpn_index=1, oui=4, is_add=1)
+ self.vapi.dhcp_proxy_set_vss(
+ tbl_id=2, vss_type=0, vpn_ascii_id="ip4-table-2", is_add=1
+ )
+
+ self.pg4.add_stream(pkts_disc_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
- self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3,
- fib_id=1, oui=4)
+ self.verify_relayed_dhcp_discover(
+ rx, self.pg1, src_intf=self.pg4, fib_id=1, oui=4
+ )
+
+ self.pg5.add_stream(pkts_disc_vrf2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg2.get_capture(1)
+ rx = rx[0]
+ self.verify_relayed_dhcp_discover(
+ rx, self.pg2, src_intf=self.pg5, vpn_id="ip4-table-2"
+ )
#
# 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_INET, self.pg1.remote_hosts[1].ip4)
+ server_addr12 = self.pg1.remote_hosts[1].ip4
- self.vapi.dhcp_proxy_config(server_addr2,
- src_addr,
- rx_table_id=1,
- server_table_id=1,
- is_add=1)
+ Proxy12 = VppDHCPProxy(
+ self, server_addr12, src_addr, rx_vrf_id=1, server_vrf_id=1
+ )
+ Proxy12.add_vpp_config()
#
# We'll need an ARP entry for the server to send it packets
#
- arp_entry = VppNeighbor(self,
- self.pg1.sw_if_index,
- self.pg1.remote_hosts[1].mac,
- self.pg1.remote_hosts[1].ip4)
+ arp_entry = VppNeighbor(
+ self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].mac,
+ self.pg1.remote_hosts[1].ip4,
+ )
arp_entry.add_vpp_config()
#
# 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(pkts_disc_vrf1)
+ self.pg4.add_stream(pkts_disc_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(2)
- option_82 = self.verify_dhcp_discover(
- rx[0], self.pg1,
- src_intf=self.pg3,
+ option_82 = self.verify_relayed_dhcp_discover(
+ rx[0],
+ self.pg1,
+ src_intf=self.pg4,
dst_mac=self.pg1.remote_hosts[1].mac,
dst_ip=self.pg1.remote_hosts[1].ip4,
- fib_id=1, oui=4)
- self.verify_dhcp_discover(rx[1], self.pg1, src_intf=self.pg3,
- fib_id=1, oui=4)
+ fib_id=1,
+ oui=4,
+ )
+ self.verify_relayed_dhcp_discover(
+ rx[1], self.pg1, src_intf=self.pg4, fib_id=1, oui=4
+ )
#
# Send both packets back. Client gets both.
#
- p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'),
- ('relay_agent_Information', option_82),
- ('end')]))
- p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src=self.pg1.remote_hosts[1].ip4, dst=self.pg1.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'),
- ('relay_agent_Information', option_82),
- ('end')]))
+ p1 = (
+ Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+ / IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("relay_agent_Information", option_82),
+ ("end"),
+ ]
+ )
+ )
+ p2 = (
+ Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+ / IP(src=self.pg1.remote_hosts[1].ip4, dst=self.pg1.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("relay_agent_Information", option_82),
+ ("end"),
+ ]
+ )
+ )
pkts = [p1, p2]
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- rx = self.pg3.get_capture(2)
+ rx = self.pg4.get_capture(2)
- self.verify_dhcp_offer(rx[0], self.pg3, fib_id=1, oui=4)
- self.verify_dhcp_offer(rx[1], self.pg3, fib_id=1, oui=4)
+ self.verify_dhcp_offer(rx[0], self.pg4, fib_id=1, oui=4)
+ self.verify_dhcp_offer(rx[1], self.pg4, fib_id=1, oui=4)
#
# Ensure offers from non-servers are dropeed
#
- p2 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IP(src="8.8.8.8", dst=self.pg1.local_ip4) /
- UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'offer'),
- ('relay_agent_Information', option_82),
- ('end')]))
- self.send_and_assert_no_replies(self.pg1, p2,
- "DHCP offer from non-server")
+ p2 = (
+ Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
+ / IP(src="8.8.8.8", dst=self.pg1.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("relay_agent_Information", option_82),
+ ("end"),
+ ]
+ )
+ )
+ self.send_and_assert_no_replies(self.pg1, p2, "DHCP offer from non-server")
#
# Ensure only the discover is sent to multiple servers
#
- p_req_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
- src=self.pg3.remote_mac) /
- IP(src="0.0.0.0", dst="255.255.255.255") /
- UDP(sport=DHCP4_CLIENT_PORT,
- dport=DHCP4_SERVER_PORT) /
- BOOTP(op=1) /
- DHCP(options=[('message-type', 'request'),
- ('end')]))
+ p_req_vrf1 = (
+ Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg4.remote_mac)
+ / IP(src="0.0.0.0", dst="255.255.255.255")
+ / UDP(sport=DHCP4_CLIENT_PORT, dport=DHCP4_SERVER_PORT)
+ / BOOTP(op=1)
+ / DHCP(options=[("message-type", "request"), ("end")])
+ )
- self.pg3.add_stream(p_req_vrf1)
+ self.pg4.add_stream(p_req_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
#
# Remove the second DHCP server
#
- self.vapi.dhcp_proxy_config(server_addr2,
- src_addr,
- rx_table_id=1,
- server_table_id=1,
- is_add=0)
+ Proxy12.remove_vpp_config()
#
# Test we can still relay with the first
#
- self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg4.add_stream(pkts_disc_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
- self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3,
- fib_id=1, oui=4)
+ self.verify_relayed_dhcp_discover(
+ rx, self.pg1, src_intf=self.pg4, 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_add=0)
+ self.vapi.dhcp_proxy_set_vss(tbl_id=1, is_add=0)
+ self.vapi.dhcp_proxy_set_vss(tbl_id=2, is_add=0)
- self.pg3.add_stream(pkts_disc_vrf1)
+ self.pg4.add_stream(pkts_disc_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
- self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
+ self.verify_relayed_dhcp_discover(rx, self.pg1, src_intf=self.pg4)
#
# remove DHCP config to cleanup
#
- self.vapi.dhcp_proxy_config(server_addr,
- src_addr,
- rx_table_id=1,
- server_table_id=1,
- is_add=0)
+ Proxy1.remove_vpp_config()
+ Proxy2.remove_vpp_config()
+
+ self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0, "DHCP cleanup VRF 0")
+ self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1, "DHCP cleanup VRF 1")
+ self.send_and_assert_no_replies(self.pg5, pkts_disc_vrf2, "DHCP cleanup VRF 2")
- self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
- "DHCP cleanup VRF 0")
- self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
- "DHCP cleanup VRF 1")
+ self.pg3.unconfig_ip4()
+ self.pg4.unconfig_ip4()
+ self.pg5.unconfig_ip4()
def test_dhcp6_proxy(self):
- """ DHCPv6 Proxy"""
+ """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
+ dhcp_solicit_src_vrf0 = mk_ll_addr(self.pg3.remote_mac)
+ dhcp_solicit_src_vrf1 = mk_ll_addr(self.pg4.remote_mac)
+ dhcp_solicit_src_vrf2 = mk_ll_addr(self.pg5.remote_mac)
+ server_addr_vrf0 = self.pg0.remote_ip6
+ src_addr_vrf0 = self.pg0.local_ip6
+ server_addr_vrf1 = self.pg1.remote_ip6
+ src_addr_vrf1 = self.pg1.local_ip6
+ server_addr_vrf2 = self.pg2.remote_ip6
+ src_addr_vrf2 = self.pg2.local_ip6
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")
+ p_solicit_vrf0 = (
+ Ether(dst=dmac, src=self.pg3.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.pg4.remote_mac)
+ / IPv6(src=dhcp_solicit_src_vrf1, dst=dhcp_solicit_dst)
+ / UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT)
+ / DHCP6_Solicit()
+ )
+ p_solicit_vrf2 = (
+ Ether(dst=dmac, src=self.pg5.remote_mac)
+ / IPv6(src=dhcp_solicit_src_vrf2, dst=dhcp_solicit_dst)
+ / UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_CLIENT_PORT)
+ / DHCP6_Solicit()
+ )
+
+ self.send_and_assert_no_replies(
+ self.pg3, p_solicit_vrf0, "DHCP with no configuration"
+ )
+ self.send_and_assert_no_replies(
+ self.pg4, p_solicit_vrf1, "DHCP with no configuration"
+ )
+ self.send_and_assert_no_replies(
+ self.pg5, p_solicit_vrf2, "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)
+ Proxy = VppDHCPProxy(
+ self, server_addr_vrf0, src_addr_vrf0, rx_vrf_id=0, server_vrf_id=0
+ )
+ Proxy.add_vpp_config()
- 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")
+ self.send_and_assert_no_replies(
+ self.pg3, p_solicit_vrf0, "DHCP with no configuration"
+ )
+ self.send_and_assert_no_replies(
+ self.pg4, p_solicit_vrf1, "DHCP with no configuration"
+ )
#
# configure an IP address on the client facing interface
#
- self.pg2.config_ip6()
+ self.pg3.config_ip6()
#
# Now the DHCP requests are relayed to the server
#
- self.pg2.add_stream(p_solicit_vrf0)
+ self.pg3.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)
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg0, dhcp_solicit_src_vrf0, self.pg3.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")
+ 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.pg3, 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")
+ 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.pg3, 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")
+ 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.pg3, 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")
+ 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.pg3, 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))
+ 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\x04")
+ / 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 = self.pg3.get_capture(1)
- self.verify_dhcp6_advert(rx[0], self.pg2, "::")
+ self.verify_dhcp6_advert(rx[0], self.pg3, "::")
#
# 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))
+ 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\x04")
+ / 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 = self.pg3.get_capture(1)
- self.verify_dhcp6_advert(rx[0], self.pg2, dhcp_solicit_src_vrf0)
+ self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf0)
#
- # Add all the config for VRF 1
+ # Add all the config for VRF 1 & 2
#
- 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()
+ Proxy1 = VppDHCPProxy(
+ self, server_addr_vrf1, src_addr_vrf1, rx_vrf_id=1, server_vrf_id=1
+ )
+ Proxy1.add_vpp_config()
+ self.pg4.config_ip6()
+
+ Proxy2 = VppDHCPProxy(
+ self, server_addr_vrf2, src_addr_vrf2, rx_vrf_id=2, server_vrf_id=2
+ )
+ Proxy2.add_vpp_config()
+ self.pg5.config_ip6()
#
# VRF 1 solicit
#
- self.pg3.add_stream(p_solicit_vrf1)
+ self.pg4.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)
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg1, dhcp_solicit_src_vrf1, self.pg4.remote_mac
+ )
+
+ #
+ # VRF 2 solicit
+ #
+ self.pg5.add_stream(p_solicit_vrf2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg2.get_capture(1)
+
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg2, dhcp_solicit_src_vrf2, self.pg5.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))
+ 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\x05")
+ / 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 = self.pg4.get_capture(1)
- self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf1)
+ self.verify_dhcp6_advert(rx[0], self.pg4, 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.vapi.dhcp_proxy_set_vss(
+ tbl_id=1, vss_type=1, oui=4, vpn_index=1, is_ipv6=1, is_add=1
+ )
+ self.vapi.dhcp_proxy_set_vss(
+ tbl_id=2, vss_type=0, vpn_ascii_id="IPv6-table-2", is_ipv6=1, is_add=1
+ )
- self.pg3.add_stream(p_solicit_vrf1)
+ self.pg4.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)
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg1, dhcp_solicit_src_vrf1, self.pg4.remote_mac, fib_id=1, oui=4
+ )
+
+ self.pg5.add_stream(p_solicit_vrf2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg2.get_capture(1)
+
+ self.verify_dhcp6_solicit(
+ rx[0],
+ self.pg2,
+ dhcp_solicit_src_vrf2,
+ self.pg5.remote_mac,
+ vpn_id="IPv6-table-2",
+ )
#
# 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.vapi.dhcp_proxy_set_vss(tbl_id=1, is_ipv6=1, is_add=0)
- self.pg3.add_stream(p_solicit_vrf1)
+ self.pg4.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)
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg1, dhcp_solicit_src_vrf1, self.pg4.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)
+ server_addr12 = 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)
+ Proxy12 = VppDHCPProxy(
+ self, server_addr12, src_addr_vrf1, rx_vrf_id=1, server_vrf_id=1
+ )
+ Proxy12.add_vpp_config()
#
# 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 = VppNeighbor(
+ self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].mac,
+ self.pg1.remote_hosts[1].ip6,
+ )
nd_entry.add_vpp_config()
#
# 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.pg4.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)
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg1, dhcp_solicit_src_vrf1, self.pg4.remote_mac
+ )
+ self.verify_dhcp6_solicit(
+ rx[1],
+ self.pg1,
+ dhcp_solicit_src_vrf1,
+ self.pg4.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))
+ 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\x05")
+ / 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\x05")
+ / DHCP6OptRelayMsg(optlen=0)
+ / DHCP6_Advertise(trid=1)
+ / DHCP6OptStatusCode(statuscode=0)
+ )
pkts = [p1, p2]
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- rx = self.pg3.get_capture(2)
+ rx = self.pg4.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)
+ self.verify_dhcp6_advert(rx[0], self.pg4, dhcp_solicit_src_vrf1)
+ self.verify_dhcp6_advert(rx[1], self.pg4, 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())
+ p_request_vrf1 = (
+ Ether(dst=dmac, src=self.pg4.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.pg4.add_stream(p_request_vrf1)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# 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")
+ 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\x05")
+ / 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)
+ Proxy12.remove_vpp_config()
#
# Test we can still relay with the first
#
- self.pg3.add_stream(p_solicit_vrf1)
+ self.pg4.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)
+ self.verify_dhcp6_solicit(
+ rx[0], self.pg1, dhcp_solicit_src_vrf1, self.pg4.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)
-
-if __name__ == '__main__':
+ Proxy.remove_vpp_config()
+ Proxy1.remove_vpp_config()
+ Proxy2.remove_vpp_config()
+
+ self.pg3.unconfig_ip6()
+ self.pg4.unconfig_ip6()
+ self.pg5.unconfig_ip6()
+
+ def test_dhcp_client(self):
+ """DHCP Client"""
+
+ vdscp = VppEnum.vl_api_ip_dscp_t
+ hostname = "universal-dp"
+
+ self.pg_enable_capture(self.pg_interfaces)
+
+ #
+ # Configure DHCP client on PG3 and capture the discover sent
+ #
+ Client = VppDHCPClient(self, self.pg3.sw_if_index, hostname)
+ Client.add_vpp_config()
+ self.assertTrue(Client.query_vpp_config())
+
+ rx = self.pg3.get_capture(1)
+
+ self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname)
+
+ #
+ # Send back on offer, expect the request
+ #
+ p_offer = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst="255.255.255.255")
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("server_id", self.pg3.remote_ip4),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_offer)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg3.get_capture(1)
+ self.verify_orig_dhcp_request(rx[0], self.pg3, hostname, self.pg3.local_ip4)
+
+ #
+ # Send an acknowledgment
+ #
+ p_ack = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst="255.255.255.255")
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "ack"),
+ ("subnet_mask", "255.255.255.0"),
+ ("router", self.pg3.remote_ip4),
+ ("server_id", self.pg3.remote_ip4),
+ ("lease_time", 43200),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_ack)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # We'll get an ARP request for the router address
+ #
+ rx = self.pg3.get_capture(1)
+
+ self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+ self.pg_enable_capture(self.pg_interfaces)
+
+ #
+ # At the end of this procedure there should be a connected route
+ # in the FIB
+ #
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+
+ #
+ # remove the DHCP config
+ #
+ Client.remove_vpp_config()
+
+ #
+ # and now the route should be gone
+ #
+ self.assertFalse(find_route(self, self.pg3.local_ip4, 32))
+ self.assertFalse(find_route(self, self.pg3.local_ip4, 24))
+
+ #
+ # Start the procedure again. this time have VPP send the client-ID
+ # and set the DSCP value
+ #
+ self.pg3.admin_down()
+ self.sleep(1)
+ self.pg3.admin_up()
+ Client.set_client(
+ self.pg3.sw_if_index,
+ hostname,
+ id=self.pg3.local_mac,
+ dscp=vdscp.IP_API_DSCP_EF,
+ )
+ Client.add_vpp_config()
+
+ rx = self.pg3.get_capture(1)
+
+ self.verify_orig_dhcp_discover(
+ rx[0], self.pg3, hostname, self.pg3.local_mac, dscp=vdscp.IP_API_DSCP_EF
+ )
+
+ # TODO: VPP DHCP client should not accept DHCP OFFER message with
+ # the XID (Transaction ID) not matching the XID of the most recent
+ # DHCP DISCOVERY message.
+ # Such DHCP OFFER message must be silently discarded - RFC2131.
+ # Reported in Jira ticket: VPP-99
+ self.pg3.add_stream(p_offer)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg3.get_capture(1)
+ self.verify_orig_dhcp_request(
+ rx[0], self.pg3, hostname, self.pg3.local_ip4, dscp=vdscp.IP_API_DSCP_EF
+ )
+
+ #
+ # unicast the ack to the offered address
+ #
+ p_ack = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "ack"),
+ ("subnet_mask", "255.255.255.0"),
+ ("router", self.pg3.remote_ip4),
+ ("server_id", self.pg3.remote_ip4),
+ ("lease_time", 43200),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_ack)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # We'll get an ARP request for the router address
+ #
+ rx = self.pg3.get_capture(1)
+
+ self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+ self.pg_enable_capture(self.pg_interfaces)
+
+ #
+ # At the end of this procedure there should be a connected route
+ # in the FIB
+ #
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+
+ #
+ # remove the DHCP config
+ #
+ Client.remove_vpp_config()
+
+ self.assertFalse(find_route(self, self.pg3.local_ip4, 32))
+ self.assertFalse(find_route(self, self.pg3.local_ip4, 24))
+
+ #
+ # Rince and repeat, this time with VPP configured not to set
+ # the braodcast flag in the discover and request messages,
+ # and for the server to unicast the responses.
+ #
+ # Configure DHCP client on PG3 and capture the discover sent
+ #
+ Client.set_client(self.pg3.sw_if_index, hostname, set_broadcast_flag=False)
+ Client.add_vpp_config()
+
+ rx = self.pg3.get_capture(1)
+
+ self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname, broadcast=False)
+
+ #
+ # Send back on offer, unicasted to the offered address.
+ # Expect the request.
+ #
+ p_offer = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("server_id", self.pg3.remote_ip4),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_offer)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg3.get_capture(1)
+ self.verify_orig_dhcp_request(
+ rx[0], self.pg3, hostname, self.pg3.local_ip4, broadcast=False
+ )
+
+ #
+ # Send an acknowledgment, the lease renewal time is 2 seconds
+ # so we should expect the renew straight after
+ #
+ p_ack = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "ack"),
+ ("subnet_mask", "255.255.255.0"),
+ ("router", self.pg3.remote_ip4),
+ ("server_id", self.pg3.remote_ip4),
+ ("lease_time", 43200),
+ ("renewal_time", 2),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_ack)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # We'll get an ARP request for the router address
+ #
+ rx = self.pg3.get_capture(1)
+
+ self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+ self.pg_enable_capture(self.pg_interfaces)
+
+ #
+ # At the end of this procedure there should be a connected route
+ # in the FIB
+ #
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+
+ #
+ # read the DHCP client details from a dump
+ #
+ clients = self.vapi.dhcp_client_dump()
+
+ self.assertEqual(clients[0].client.sw_if_index, self.pg3.sw_if_index)
+ self.assertEqual(clients[0].lease.sw_if_index, self.pg3.sw_if_index)
+ self.assertEqual(clients[0].client.hostname, hostname)
+ self.assertEqual(clients[0].lease.hostname, hostname)
+ # 0 = DISCOVER, 1 = REQUEST, 2 = BOUND
+ self.assertEqual(clients[0].lease.state, 2)
+ self.assertEqual(clients[0].lease.mask_width, 24)
+ self.assertEqual(str(clients[0].lease.router_address), self.pg3.remote_ip4)
+ self.assertEqual(str(clients[0].lease.host_address), self.pg3.local_ip4)
+
+ #
+ # wait for the unicasted renewal
+ # the first attempt will be an ARP packet, since we have not yet
+ # responded to VPP's request
+ #
+ self.logger.info(self.vapi.cli("sh dhcp client intfc pg3 verbose"))
+ rx = self.pg3.get_capture(1, timeout=10)
+
+ self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+
+ # respond to the arp
+ p_arp = Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac) / ARP(
+ op="is-at",
+ hwdst=self.pg3.local_mac,
+ hwsrc=self.pg3.remote_mac,
+ pdst=self.pg3.local_ip4,
+ psrc=self.pg3.remote_ip4,
+ )
+ self.pg3.add_stream(p_arp)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # the next packet is the unicasted renewal
+ rx = self.pg3.get_capture(1, timeout=10)
+ self.verify_orig_dhcp_request(
+ rx[0], self.pg3, hostname, self.pg3.local_ip4, l2_bc=False, broadcast=False
+ )
+
+ # send an ACK with different data from the original offer *
+ self.pg3.generate_remote_hosts(4)
+ p_ack = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst=self.pg3.local_ip4)
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1,
+ yiaddr=self.pg3.remote_hosts[3].ip4,
+ chaddr=mac_pton(self.pg3.local_mac),
+ )
+ / DHCP(
+ options=[
+ ("message-type", "ack"),
+ ("subnet_mask", "255.255.255.0"),
+ ("router", self.pg3.remote_hosts[1].ip4),
+ ("server_id", self.pg3.remote_hosts[2].ip4),
+ ("lease_time", 43200),
+ ("renewal_time", 2),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_ack)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # read the DHCP client details from a dump
+ #
+ clients = self.vapi.dhcp_client_dump()
+
+ self.assertEqual(clients[0].client.sw_if_index, self.pg3.sw_if_index)
+ self.assertEqual(clients[0].lease.sw_if_index, self.pg3.sw_if_index)
+ self.assertEqual(clients[0].client.hostname, hostname)
+ self.assertEqual(clients[0].lease.hostname, hostname)
+ # 0 = DISCOVER, 1 = REQUEST, 2 = BOUND
+ self.assertEqual(clients[0].lease.state, 2)
+ self.assertEqual(clients[0].lease.mask_width, 24)
+ self.assertEqual(
+ str(clients[0].lease.router_address), self.pg3.remote_hosts[1].ip4
+ )
+ self.assertEqual(
+ str(clients[0].lease.host_address), self.pg3.remote_hosts[3].ip4
+ )
+
+ #
+ # remove the DHCP config
+ #
+ Client.remove_vpp_config()
+
+ #
+ # and now the route should be gone
+ #
+ self.assertFalse(find_route(self, self.pg3.local_ip4, 32))
+ self.assertFalse(find_route(self, self.pg3.local_ip4, 24))
+
+ #
+ # Start the procedure again. Use requested lease time option.
+ # this time wait for the lease to expire and the client to
+ # self-destruct
+ #
+ hostname += "-2"
+ self.pg3.admin_down()
+ self.sleep(1)
+ self.pg3.admin_up()
+ self.pg_enable_capture(self.pg_interfaces)
+ Client.set_client(self.pg3.sw_if_index, hostname)
+ Client.add_vpp_config()
+
+ rx = self.pg3.get_capture(1)
+
+ self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname)
+
+ #
+ # Send back on offer with requested lease time, expect the request
+ #
+ lease_time = 1
+ p_offer = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst="255.255.255.255")
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "offer"),
+ ("server_id", self.pg3.remote_ip4),
+ ("lease_time", lease_time),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_offer)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg3.get_capture(1)
+ self.verify_orig_dhcp_request(rx[0], self.pg3, hostname, self.pg3.local_ip4)
+
+ #
+ # Send an acknowledgment
+ #
+ p_ack = (
+ Ether(dst=self.pg3.local_mac, src=self.pg3.remote_mac)
+ / IP(src=self.pg3.remote_ip4, dst="255.255.255.255")
+ / UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_CLIENT_PORT)
+ / BOOTP(
+ op=1, yiaddr=self.pg3.local_ip4, chaddr=mac_pton(self.pg3.local_mac)
+ )
+ / DHCP(
+ options=[
+ ("message-type", "ack"),
+ ("subnet_mask", "255.255.255.0"),
+ ("router", self.pg3.remote_ip4),
+ ("server_id", self.pg3.remote_ip4),
+ ("lease_time", lease_time),
+ "end",
+ ]
+ )
+ )
+
+ self.pg3.add_stream(p_ack)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # We'll get an ARP request for the router address
+ #
+ rx = self.pg3.get_capture(1)
+
+ self.assertEqual(rx[0][ARP].pdst, self.pg3.remote_ip4)
+
+ #
+ # At the end of this procedure there should be a connected route
+ # in the FIB
+ #
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
+ self.assertTrue(find_route(self, self.pg3.local_ip4, 24))
+
+ #
+ # the route should be gone after the lease expires
+ #
+ self.assertTrue(self.wait_for_no_route(self.pg3.local_ip4, 32))
+ self.assertTrue(self.wait_for_no_route(self.pg3.local_ip4, 24))
+
+ #
+ # remove the DHCP config
+ #
+ Client.remove_vpp_config()
+
+ def test_dhcp_client_vlan(self):
+ """DHCP Client w/ VLAN"""
+
+ vdscp = VppEnum.vl_api_ip_dscp_t
+ vqos = VppEnum.vl_api_qos_source_t
+ hostname = "universal-dp"
+
+ self.pg_enable_capture(self.pg_interfaces)
+
+ vlan_100 = VppDot1QSubint(self, self.pg3, 100)
+ vlan_100.admin_up()
+
+ output = [scapy.compat.chb(4)] * 256
+ os = b"".join(output)
+ rows = [{"outputs": os}, {"outputs": os}, {"outputs": os}, {"outputs": os}]
+
+ qem1 = VppQosEgressMap(self, 1, rows).add_vpp_config()
+ qm1 = VppQosMark(
+ self, vlan_100, qem1, vqos.QOS_API_SOURCE_VLAN
+ ).add_vpp_config()
+
+ #
+ # Configure DHCP client on PG3 and capture the discover sent
+ #
+ Client = VppDHCPClient(
+ self, vlan_100.sw_if_index, hostname, dscp=vdscp.IP_API_DSCP_EF
+ )
+ Client.add_vpp_config()
+
+ rx = self.pg3.get_capture(1)
+
+ self.assertEqual(rx[0][Dot1Q].vlan, 100)
+ self.assertEqual(rx[0][Dot1Q].prio, 2)
+
+ self.verify_orig_dhcp_discover(
+ rx[0], self.pg3, hostname, dscp=vdscp.IP_API_DSCP_EF
+ )
+
+
+if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff