8006c6aa42
Change the definition of vl_api_mac_address_t to an aliased type. Change-Id: I1434f316d0fad6a099592f39bceeb8faeaf1d134 Signed-off-by: Ole Troan <ot@cisco.com>
1556 lines
59 KiB
Python
1556 lines
59 KiB
Python
#!/usr/bin/env python
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import unittest
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import socket
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import struct
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from framework import VppTestCase, VppTestRunner, running_extended_tests
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from vpp_neighbor import VppNeighbor
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from vpp_ip_route import find_route, VppIpTable
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from util import mk_ll_addr
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from scapy.layers.l2 import Ether, getmacbyip, ARP
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from scapy.layers.inet import IP, UDP, ICMP
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from scapy.layers.inet6 import IPv6, in6_getnsmac
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from scapy.utils6 import in6_mactoifaceid
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from scapy.layers.dhcp import DHCP, BOOTP, DHCPTypes
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from scapy.layers.dhcp6 import DHCP6, DHCP6_Solicit, DHCP6_RelayForward, \
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DHCP6_RelayReply, DHCP6_Advertise, DHCP6OptRelayMsg, DHCP6OptIfaceId, \
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DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr, DHCP6_Request
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from socket import AF_INET, AF_INET6
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from scapy.utils import inet_pton, inet_ntop
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from scapy.utils6 import in6_ptop
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from vpp_papi import mac_pton
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DHCP4_CLIENT_PORT = 68
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DHCP4_SERVER_PORT = 67
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DHCP6_CLIENT_PORT = 547
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DHCP6_SERVER_PORT = 546
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class TestDHCP(VppTestCase):
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""" DHCP Test Case """
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def setUp(self):
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super(TestDHCP, self).setUp()
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# create 6 pg interfaces for pg0 to pg5
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self.create_pg_interfaces(range(6))
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self.tables = []
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# pg0 to 2 are IP configured in VRF 0, 1 and 2.
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# pg3 to 5 are non IP-configured in VRF 0, 1 and 2.
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table_id = 0
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for table_id in range(1, 4):
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tbl4 = VppIpTable(self, table_id)
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tbl4.add_vpp_config()
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self.tables.append(tbl4)
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tbl6 = VppIpTable(self, table_id, is_ip6=1)
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tbl6.add_vpp_config()
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self.tables.append(tbl6)
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table_id = 0
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for i in self.pg_interfaces[:3]:
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i.admin_up()
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i.set_table_ip4(table_id)
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i.set_table_ip6(table_id)
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i.config_ip4()
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i.resolve_arp()
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i.config_ip6()
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i.resolve_ndp()
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table_id += 1
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table_id = 0
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for i in self.pg_interfaces[3:]:
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i.admin_up()
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i.set_table_ip4(table_id)
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i.set_table_ip6(table_id)
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table_id += 1
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def tearDown(self):
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for i in self.pg_interfaces[:3]:
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i.unconfig_ip4()
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i.unconfig_ip6()
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for i in self.pg_interfaces:
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i.set_table_ip4(0)
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i.set_table_ip6(0)
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i.admin_down()
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super(TestDHCP, self).tearDown()
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def verify_dhcp_has_option(self, pkt, option, value):
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dhcp = pkt[DHCP]
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found = False
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for i in dhcp.options:
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if type(i) is tuple:
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if i[0] == option:
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self.assertEqual(i[1], value)
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found = True
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self.assertTrue(found)
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def validate_relay_options(self, pkt, intf, ip_addr, vpn_id, fib_id, oui):
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dhcp = pkt[DHCP]
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found = 0
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data = []
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id_len = len(vpn_id)
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for i in dhcp.options:
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if type(i) is tuple:
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if i[0] == "relay_agent_Information":
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#
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# There are two sb-options present - each of length 6.
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#
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data = i[1]
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if oui != 0:
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self.assertEqual(len(data), 24)
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elif len(vpn_id) > 0:
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self.assertEqual(len(data), len(vpn_id)+17)
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else:
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self.assertEqual(len(data), 12)
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#
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# First sub-option is ID 1, len 4, then encoded
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# sw_if_index. This test uses low valued indicies
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# so [2:4] are 0.
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# The ID space is VPP internal - so no matching value
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# scapy
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#
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self.assertEqual(ord(data[0]), 1)
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self.assertEqual(ord(data[1]), 4)
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self.assertEqual(ord(data[2]), 0)
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self.assertEqual(ord(data[3]), 0)
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self.assertEqual(ord(data[4]), 0)
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self.assertEqual(ord(data[5]), intf._sw_if_index)
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#
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# next sub-option is the IP address of the client side
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# interface.
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# sub-option ID=5, length (of a v4 address)=4
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#
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claddr = socket.inet_pton(AF_INET, ip_addr)
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self.assertEqual(ord(data[6]), 5)
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self.assertEqual(ord(data[7]), 4)
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self.assertEqual(data[8], claddr[0])
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self.assertEqual(data[9], claddr[1])
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self.assertEqual(data[10], claddr[2])
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self.assertEqual(data[11], claddr[3])
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if oui != 0:
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# sub-option 151 encodes vss_type 1,
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# the 3 byte oui and the 4 byte fib_id
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self.assertEqual(id_len, 0)
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self.assertEqual(ord(data[12]), 151)
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self.assertEqual(ord(data[13]), 8)
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self.assertEqual(ord(data[14]), 1)
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self.assertEqual(ord(data[15]), 0)
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self.assertEqual(ord(data[16]), 0)
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self.assertEqual(ord(data[17]), oui)
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self.assertEqual(ord(data[18]), 0)
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self.assertEqual(ord(data[19]), 0)
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self.assertEqual(ord(data[20]), 0)
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self.assertEqual(ord(data[21]), fib_id)
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# VSS control sub-option
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self.assertEqual(ord(data[22]), 152)
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self.assertEqual(ord(data[23]), 0)
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if id_len > 0:
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# sub-option 151 encode vss_type of 0
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# followerd by vpn_id in ascii
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self.assertEqual(oui, 0)
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self.assertEqual(ord(data[12]), 151)
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self.assertEqual(ord(data[13]), id_len+1)
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self.assertEqual(ord(data[14]), 0)
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self.assertEqual(data[15:15+id_len], vpn_id)
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# VSS control sub-option
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self.assertEqual(ord(data[15+len(vpn_id)]), 152)
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self.assertEqual(ord(data[16+len(vpn_id)]), 0)
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found = 1
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self.assertTrue(found)
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return data
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def verify_dhcp_msg_type(self, pkt, name):
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dhcp = pkt[DHCP]
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found = False
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for o in dhcp.options:
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if type(o) is tuple:
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if o[0] == "message-type" \
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and DHCPTypes[o[1]] == name:
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found = True
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self.assertTrue(found)
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def verify_dhcp_offer(self, pkt, intf, vpn_id="", fib_id=0, oui=0):
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ether = pkt[Ether]
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self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
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self.assertEqual(ether.src, intf.local_mac)
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ip = pkt[IP]
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self.assertEqual(ip.dst, "255.255.255.255")
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self.assertEqual(ip.src, intf.local_ip4)
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udp = pkt[UDP]
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self.assertEqual(udp.dport, DHCP4_CLIENT_PORT)
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self.assertEqual(udp.sport, DHCP4_SERVER_PORT)
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self.verify_dhcp_msg_type(pkt, "offer")
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data = self.validate_relay_options(pkt, intf, intf.local_ip4,
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vpn_id, fib_id, oui)
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def verify_orig_dhcp_pkt(self, pkt, intf):
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ether = pkt[Ether]
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self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
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self.assertEqual(ether.src, intf.local_mac)
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ip = pkt[IP]
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self.assertEqual(ip.dst, "255.255.255.255")
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self.assertEqual(ip.src, "0.0.0.0")
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udp = pkt[UDP]
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self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
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self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
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def verify_orig_dhcp_discover(self, pkt, intf, hostname, client_id=None,
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broadcast=1):
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self.verify_orig_dhcp_pkt(pkt, intf)
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self.verify_dhcp_msg_type(pkt, "discover")
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self.verify_dhcp_has_option(pkt, "hostname", hostname)
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if client_id:
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self.verify_dhcp_has_option(pkt, "client_id", client_id)
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bootp = pkt[BOOTP]
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self.assertEqual(bootp.ciaddr, "0.0.0.0")
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self.assertEqual(bootp.giaddr, "0.0.0.0")
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if broadcast:
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self.assertEqual(bootp.flags, 0x8000)
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else:
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self.assertEqual(bootp.flags, 0x0000)
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def verify_orig_dhcp_request(self, pkt, intf, hostname, ip,
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broadcast=1):
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self.verify_orig_dhcp_pkt(pkt, intf)
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self.verify_dhcp_msg_type(pkt, "request")
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self.verify_dhcp_has_option(pkt, "hostname", hostname)
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self.verify_dhcp_has_option(pkt, "requested_addr", ip)
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bootp = pkt[BOOTP]
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self.assertEqual(bootp.ciaddr, "0.0.0.0")
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self.assertEqual(bootp.giaddr, "0.0.0.0")
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if broadcast:
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self.assertEqual(bootp.flags, 0x8000)
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else:
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self.assertEqual(bootp.flags, 0x0000)
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def verify_relayed_dhcp_discover(self, pkt, intf, src_intf=None,
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fib_id=0, oui=0,
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vpn_id="",
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dst_mac=None, dst_ip=None):
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if not dst_mac:
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dst_mac = intf.remote_mac
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if not dst_ip:
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dst_ip = intf.remote_ip4
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ether = pkt[Ether]
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self.assertEqual(ether.dst, dst_mac)
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self.assertEqual(ether.src, intf.local_mac)
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ip = pkt[IP]
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self.assertEqual(ip.dst, dst_ip)
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self.assertEqual(ip.src, intf.local_ip4)
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udp = pkt[UDP]
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self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
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self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
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dhcp = pkt[DHCP]
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is_discover = False
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for o in dhcp.options:
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if type(o) is tuple:
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if o[0] == "message-type" \
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and DHCPTypes[o[1]] == "discover":
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is_discover = True
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self.assertTrue(is_discover)
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data = self.validate_relay_options(pkt, src_intf,
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src_intf.local_ip4,
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vpn_id,
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fib_id, oui)
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return data
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def verify_dhcp6_solicit(self, pkt, intf,
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peer_ip, peer_mac,
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vpn_id="",
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fib_id=0,
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oui=0,
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dst_mac=None,
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dst_ip=None):
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if not dst_mac:
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dst_mac = intf.remote_mac
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if not dst_ip:
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dst_ip = in6_ptop(intf.remote_ip6)
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ether = pkt[Ether]
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self.assertEqual(ether.dst, dst_mac)
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self.assertEqual(ether.src, intf.local_mac)
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ip = pkt[IPv6]
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self.assertEqual(in6_ptop(ip.dst), dst_ip)
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self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
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udp = pkt[UDP]
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self.assertEqual(udp.dport, DHCP6_CLIENT_PORT)
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self.assertEqual(udp.sport, DHCP6_SERVER_PORT)
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relay = pkt[DHCP6_RelayForward]
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self.assertEqual(in6_ptop(relay.peeraddr), in6_ptop(peer_ip))
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oid = pkt[DHCP6OptIfaceId]
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cll = pkt[DHCP6OptClientLinkLayerAddr]
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self.assertEqual(cll.optlen, 8)
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self.assertEqual(cll.lltype, 1)
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self.assertEqual(cll.clladdr, peer_mac)
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id_len = len(vpn_id)
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if fib_id != 0:
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self.assertEqual(id_len, 0)
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vss = pkt[DHCP6OptVSS]
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self.assertEqual(vss.optlen, 8)
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self.assertEqual(vss.type, 1)
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# the OUI and FIB-id are really 3 and 4 bytes resp.
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# but the tested range is small
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self.assertEqual(ord(vss.data[0]), 0)
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self.assertEqual(ord(vss.data[1]), 0)
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self.assertEqual(ord(vss.data[2]), oui)
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self.assertEqual(ord(vss.data[3]), 0)
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self.assertEqual(ord(vss.data[4]), 0)
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self.assertEqual(ord(vss.data[5]), 0)
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self.assertEqual(ord(vss.data[6]), fib_id)
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if id_len > 0:
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self.assertEqual(oui, 0)
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vss = pkt[DHCP6OptVSS]
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self.assertEqual(vss.optlen, id_len+1)
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self.assertEqual(vss.type, 0)
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self.assertEqual(vss.data[0:id_len], vpn_id)
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# the relay message should be an encoded Solicit
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msg = pkt[DHCP6OptRelayMsg]
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sol = DHCP6_Solicit()
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self.assertEqual(msg.optlen, len(str(sol)))
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self.assertEqual(str(sol), (str(msg[1]))[:msg.optlen])
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def verify_dhcp6_advert(self, pkt, intf, peer):
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ether = pkt[Ether]
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self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
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self.assertEqual(ether.src, intf.local_mac)
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ip = pkt[IPv6]
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self.assertEqual(in6_ptop(ip.dst), in6_ptop(peer))
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self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
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udp = pkt[UDP]
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self.assertEqual(udp.dport, DHCP6_SERVER_PORT)
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self.assertEqual(udp.sport, DHCP6_CLIENT_PORT)
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# not sure why this is not decoding
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# adv = pkt[DHCP6_Advertise]
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def test_dhcp_proxy(self):
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""" DHCPv4 Proxy """
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#
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# Verify no response to DHCP request without DHCP config
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#
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p_disc_vrf0 = (Ether(dst="ff:ff:ff:ff:ff:ff",
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src=self.pg3.remote_mac) /
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IP(src="0.0.0.0", dst="255.255.255.255") /
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UDP(sport=DHCP4_CLIENT_PORT,
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dport=DHCP4_SERVER_PORT) /
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BOOTP(op=1) /
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DHCP(options=[('message-type', 'discover'), ('end')]))
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pkts_disc_vrf0 = [p_disc_vrf0]
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p_disc_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
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src=self.pg4.remote_mac) /
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IP(src="0.0.0.0", dst="255.255.255.255") /
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UDP(sport=DHCP4_CLIENT_PORT,
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dport=DHCP4_SERVER_PORT) /
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BOOTP(op=1) /
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DHCP(options=[('message-type', 'discover'), ('end')]))
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pkts_disc_vrf1 = [p_disc_vrf1]
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p_disc_vrf2 = (Ether(dst="ff:ff:ff:ff:ff:ff",
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src=self.pg5.remote_mac) /
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IP(src="0.0.0.0", dst="255.255.255.255") /
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UDP(sport=DHCP4_CLIENT_PORT,
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dport=DHCP4_SERVER_PORT) /
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BOOTP(op=1) /
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DHCP(options=[('message-type', 'discover'), ('end')]))
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pkts_disc_vrf2 = [p_disc_vrf2]
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self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0,
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"DHCP with no configuration")
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self.send_and_assert_no_replies(self.pg4, pkts_disc_vrf1,
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"DHCP with no configuration")
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self.send_and_assert_no_replies(self.pg5, pkts_disc_vrf2,
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"DHCP with no configuration")
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#
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# Enable DHCP proxy in VRF 0
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#
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server_addr = self.pg0.remote_ip4n
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src_addr = self.pg0.local_ip4n
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self.vapi.dhcp_proxy_config(server_addr,
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src_addr,
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rx_table_id=0)
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#
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# Discover packets from the client are dropped because there is no
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# IP address configured on the client facing interface
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#
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self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf0,
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"Discover DHCP no relay address")
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#
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# Inject a response from the server
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# dropped, because there is no IP addrees on the
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# client interfce to fill in the option.
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#
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p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
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IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
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UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
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BOOTP(op=1) /
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DHCP(options=[('message-type', 'offer'), ('end')]))
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pkts = [p]
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self.send_and_assert_no_replies(self.pg3, pkts,
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"Offer DHCP no relay address")
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#
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# configure an IP address on the client facing interface
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#
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self.pg3.config_ip4()
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#
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# Try again with a discover packet
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# Rx'd packet should be to the server address and from the configured
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# source address
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# UDP source ports are unchanged
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# we've no option 82 config so that should be absent
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#
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self.pg3.add_stream(pkts_disc_vrf0)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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rx = self.pg0.get_capture(1)
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rx = rx[0]
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|
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')]))
|
|
pkts = [p]
|
|
|
|
self.pg0.add_stream(pkts)
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
|
|
rx = self.pg3.get_capture(1)
|
|
rx = rx[0]
|
|
|
|
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')]))
|
|
pkts = [p]
|
|
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')]))
|
|
pkts = [p]
|
|
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.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)
|
|
|
|
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 & 2
|
|
#
|
|
server_addr1 = self.pg1.remote_ip4n
|
|
src_addr1 = self.pg1.local_ip4n
|
|
self.vapi.dhcp_proxy_config(server_addr1,
|
|
src_addr1,
|
|
rx_table_id=1,
|
|
server_table_id=1)
|
|
server_addr2 = self.pg2.remote_ip4n
|
|
src_addr2 = self.pg2.local_ip4n
|
|
self.vapi.dhcp_proxy_config(server_addr2,
|
|
src_addr2,
|
|
rx_table_id=2,
|
|
server_table_id=2)
|
|
|
|
#
|
|
# Confim DHCP requests ok in VRF 1 & 2.
|
|
# - dropped on IP config on client interface
|
|
#
|
|
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.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_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, vss_type=1, vpn_index=1, oui=4
|
|
# table=2, vss_type=0, vpn_id = "ip4-table-2"
|
|
self.vapi.dhcp_proxy_set_vss(1, 1, vpn_index=1, oui=4, is_add=1)
|
|
self.vapi.dhcp_proxy_set_vss(2, 0, "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_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_addr12 = socket.inet_pton(AF_INET, self.pg1.remote_hosts[1].ip4)
|
|
|
|
self.vapi.dhcp_proxy_config(server_addr12,
|
|
src_addr1,
|
|
rx_table_id=1,
|
|
server_table_id=1,
|
|
is_add=1)
|
|
|
|
#
|
|
# 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.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.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_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_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')]))
|
|
pkts = [p1, p2]
|
|
|
|
self.pg1.add_stream(pkts)
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
|
|
rx = self.pg4.get_capture(2)
|
|
|
|
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")
|
|
|
|
#
|
|
# Ensure only the discover is sent to multiple servers
|
|
#
|
|
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.pg4.add_stream(p_req_vrf1)
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
|
|
rx = self.pg1.get_capture(1)
|
|
|
|
#
|
|
# Remove the second DHCP server
|
|
#
|
|
self.vapi.dhcp_proxy_config(server_addr12,
|
|
src_addr1,
|
|
rx_table_id=1,
|
|
server_table_id=1,
|
|
is_add=0)
|
|
|
|
#
|
|
# Test we can still relay with the first
|
|
#
|
|
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_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, is_add=0)
|
|
self.vapi.dhcp_proxy_set_vss(2, is_add=0)
|
|
|
|
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_relayed_dhcp_discover(rx, self.pg1, src_intf=self.pg4)
|
|
|
|
#
|
|
# remove DHCP config to cleanup
|
|
#
|
|
self.vapi.dhcp_proxy_config(server_addr1,
|
|
src_addr1,
|
|
rx_table_id=1,
|
|
server_table_id=1,
|
|
is_add=0)
|
|
self.vapi.dhcp_proxy_config(server_addr2,
|
|
src_addr2,
|
|
rx_table_id=2,
|
|
server_table_id=2,
|
|
is_add=0)
|
|
|
|
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.pg3.unconfig_ip4()
|
|
self.pg4.unconfig_ip4()
|
|
self.pg5.unconfig_ip4()
|
|
|
|
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.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_ip6n
|
|
src_addr_vrf0 = self.pg0.local_ip6n
|
|
server_addr_vrf1 = self.pg1.remote_ip6n
|
|
src_addr_vrf1 = self.pg1.local_ip6n
|
|
server_addr_vrf2 = self.pg2.remote_ip6n
|
|
src_addr_vrf2 = self.pg2.local_ip6n
|
|
|
|
dmac = in6_getnsmac(inet_pton(socket.AF_INET6, dhcp_solicit_dst))
|
|
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)
|
|
|
|
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.pg3.config_ip6()
|
|
|
|
#
|
|
# Now the DHCP requests are relayed to the server
|
|
#
|
|
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.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.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.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.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.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\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.pg3.get_capture(1)
|
|
|
|
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\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.pg3.get_capture(1)
|
|
|
|
self.verify_dhcp6_advert(rx[0], self.pg3, dhcp_solicit_src_vrf0)
|
|
|
|
#
|
|
# 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.pg4.config_ip6()
|
|
|
|
self.vapi.dhcp_proxy_config(server_addr_vrf2,
|
|
src_addr_vrf2,
|
|
rx_table_id=2,
|
|
server_table_id=2,
|
|
is_ipv6=1)
|
|
self.pg5.config_ip6()
|
|
|
|
#
|
|
# VRF 1 solicit
|
|
#
|
|
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.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\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.pg4.get_capture(1)
|
|
|
|
self.verify_dhcp6_advert(rx[0], self.pg4, dhcp_solicit_src_vrf1)
|
|
|
|
#
|
|
# Add VSS config
|
|
# table=1, vss_type=1, vpn_index=1, oui=4
|
|
# table=2, vss_type=0, vpn_id = "ip6-table-2"
|
|
self.vapi.dhcp_proxy_set_vss(1, 1, oui=4, vpn_index=1, is_ip6=1)
|
|
self.vapi.dhcp_proxy_set_vss(2, 0, "IPv6-table-2", is_ip6=1)
|
|
|
|
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.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, is_ip6=1, is_add=0)
|
|
|
|
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.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_addr12 = socket.inet_pton(AF_INET6,
|
|
self.pg1.remote_hosts[1].ip6)
|
|
|
|
self.vapi.dhcp_proxy_config(server_addr12,
|
|
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.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.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\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.pg1.add_stream(pkts)
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
|
|
rx = self.pg4.get_capture(2)
|
|
|
|
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.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.pg4.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\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_addr12,
|
|
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.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.pg4.remote_mac)
|
|
|
|
#
|
|
# Cleanup
|
|
#
|
|
self.vapi.dhcp_proxy_config(server_addr_vrf2,
|
|
src_addr_vrf2,
|
|
rx_table_id=2,
|
|
server_table_id=2,
|
|
is_ipv6=1,
|
|
is_add=0)
|
|
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.pg3.unconfig_ip6()
|
|
self.pg4.unconfig_ip6()
|
|
self.pg5.unconfig_ip6()
|
|
|
|
def test_dhcp_client(self):
|
|
""" DHCP Client"""
|
|
|
|
hostname = 'universal-dp'
|
|
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
|
|
#
|
|
# Configure DHCP client on PG3 and capture the discover sent
|
|
#
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname)
|
|
|
|
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 left over ARP entry
|
|
self.vapi.ip_neighbor_add_del(self.pg3.sw_if_index,
|
|
mac_pton(self.pg3.remote_mac),
|
|
self.pg3.remote_ip4,
|
|
is_add=0)
|
|
#
|
|
# remove the DHCP config
|
|
#
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname, is_add=0)
|
|
|
|
#
|
|
# 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
|
|
#
|
|
self.pg3.admin_down()
|
|
self.sleep(1)
|
|
self.pg3.admin_up()
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname,
|
|
client_id=self.pg3.local_mac)
|
|
|
|
rx = self.pg3.get_capture(1)
|
|
|
|
self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname,
|
|
self.pg3.local_mac)
|
|
|
|
# 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)
|
|
|
|
#
|
|
# 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
|
|
#
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname, is_add=0)
|
|
|
|
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
|
|
#
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname,
|
|
set_broadcast_flag=0)
|
|
|
|
rx = self.pg3.get_capture(1)
|
|
|
|
self.verify_orig_dhcp_discover(rx[0], self.pg3, hostname,
|
|
broadcast=0)
|
|
|
|
#
|
|
# 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=0)
|
|
|
|
#
|
|
# Send an acknowledgment
|
|
#
|
|
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, 24))
|
|
self.assertTrue(find_route(self, self.pg3.local_ip4, 32))
|
|
|
|
# remove the left over ARP entry
|
|
self.vapi.ip_neighbor_add_del(self.pg3.sw_if_index,
|
|
mac_pton(self.pg3.remote_mac),
|
|
self.pg3.remote_ip4,
|
|
is_add=0)
|
|
|
|
#
|
|
# 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.rstrip('\0'),
|
|
hostname)
|
|
self.assertEqual(clients[0].lease.hostname.rstrip('\0'),
|
|
hostname)
|
|
self.assertEqual(clients[0].lease.is_ipv6, 0)
|
|
# 0 = DISCOVER, 1 = REQUEST, 2 = BOUND
|
|
self.assertEqual(clients[0].lease.state, 2)
|
|
self.assertEqual(clients[0].lease.mask_width, 24)
|
|
self.assertEqual(clients[0].lease.router_address.rstrip('\0'),
|
|
self.pg3.remote_ip4n)
|
|
self.assertEqual(clients[0].lease.host_address.rstrip('\0'),
|
|
self.pg3.local_ip4n)
|
|
|
|
#
|
|
# remove the DHCP config
|
|
#
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname, is_add=0)
|
|
|
|
#
|
|
# 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.
|
|
#
|
|
self.pg3.admin_down()
|
|
self.sleep(1)
|
|
self.pg3.admin_up()
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname)
|
|
|
|
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))
|
|
|
|
# remove the left over ARP entry
|
|
self.vapi.ip_neighbor_add_del(self.pg3.sw_if_index,
|
|
mac_pton(self.pg3.remote_mac),
|
|
self.pg3.remote_ip4,
|
|
is_add=0)
|
|
|
|
#
|
|
# Sleep for the lease time
|
|
#
|
|
self.sleep(lease_time+1)
|
|
|
|
#
|
|
# 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))
|
|
|
|
#
|
|
# remove the DHCP config
|
|
#
|
|
self.vapi.dhcp_client(self.pg3.sw_if_index, hostname, is_add=0)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(testRunner=VppTestRunner)
|