Add IRB test
- JIRA: CSIT-255 - create loopback interfaces - move pg-interface specific arp and neighbor discovery from vpp_interface to vpp_pg_interface - base configuration of IRB tests - IP test scenario Change-Id: I9945a188163652a4e22325877aef008c4d029557 Signed-off-by: Matej Klotton <mklotton@cisco.com>
This commit is contained in:
Matej Klotton
committed by
Damjan Marion
Damjan Marion
parent
9db551cf50
commit
0178d52384
@ -1,9 +1,8 @@
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from abc import abstractmethod, ABCMeta
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import socket
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from logging import info, error
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from scapy.layers.l2 import Ether, ARP
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from logging import info
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from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptDstLLAddr
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from util import Host
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class VppInterface(object):
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@ -20,7 +19,7 @@ class VppInterface(object):
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@property
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def remote_mac(self):
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"""MAC-address of the remote interface "connected" to this interface"""
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return self._remote_mac
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return self._remote_hosts[0].mac
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@property
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def local_mac(self):
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@ -35,17 +34,17 @@ class VppInterface(object):
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@property
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def local_ip4n(self):
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"""Local IPv4 address - raw, suitable as API parameter"""
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return self._local_ip4n
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return socket.inet_pton(socket.AF_INET, self._local_ip4)
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@property
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def remote_ip4(self):
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"""IPv4 address of remote peer "connected" to this interface"""
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return self._remote_ip4
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return self._remote_hosts[0].ip4
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@property
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def remote_ip4n(self):
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"""IPv4 address of remote peer - raw, suitable as API parameter"""
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return self._remote_ip4n
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return socket.inet_pton(socket.AF_INET, self.remote_ip4)
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@property
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def local_ip6(self):
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@ -55,17 +54,17 @@ class VppInterface(object):
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@property
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def local_ip6n(self):
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"""Local IPv6 address - raw, suitable as API parameter"""
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return self._local_ip6n
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return socket.inet_pton(socket.AF_INET6, self.local_ip6)
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@property
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def remote_ip6(self):
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"""IPv6 address of remote peer "connected" to this interface"""
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return self._remote_ip6
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return self._remote_hosts[0].ip6
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@property
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def remote_ip6n(self):
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"""IPv6 address of remote peer - raw, suitable as API parameter"""
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return self._remote_ip6n
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return socket.inet_pton(socket.AF_INET6, self.remote_ip6)
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@property
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def name(self):
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@ -82,19 +81,51 @@ class VppInterface(object):
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"""Test case creating this interface"""
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return self._test
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@property
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def remote_hosts(self):
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"""Remote hosts list"""
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return self._remote_hosts
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@remote_hosts.setter
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def remote_hosts(self, value):
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self._remote_hosts = value
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#TODO: set hosts_by dicts
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def host_by_mac(self, mac):
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return self._hosts_by_mac[mac]
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def host_by_ip4(self, ip):
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return self._hosts_by_ip4[ip]
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def host_by_ip6(self, ip):
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return self._hosts_by_ip6[ip]
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def generate_remote_hosts(self, count=1):
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"""Generate and add remote hosts for the interface."""
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self._remote_hosts = []
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self._hosts_by_mac = {}
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self._hosts_by_ip4 = {}
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self._hosts_by_ip6 = {}
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for i in range(2, count+2): # 0: network address, 1: local vpp address
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mac = "02:%02x:00:00:ff:%02x" % (self.sw_if_index, i)
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ip4 = "172.16.%u.%u" % (self.sw_if_index, i)
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ip6 = "fd01:%04x::%04x" % (self.sw_if_index, i)
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host = Host(mac, ip4, ip6)
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self._remote_hosts.append(host)
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self._hosts_by_mac[mac] = host
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self._hosts_by_ip4[ip4] = host
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self._hosts_by_ip6[ip6] = host
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def post_init_setup(self):
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"""Additional setup run after creating an interface object"""
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self._remote_mac = "02:00:00:00:ff:%02x" % self.sw_if_index
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self.generate_remote_hosts()
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self._local_ip4 = "172.16.%u.1" % self.sw_if_index
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self._local_ip4n = socket.inet_pton(socket.AF_INET, self.local_ip4)
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self._remote_ip4 = "172.16.%u.2" % self.sw_if_index
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self._remote_ip4n = socket.inet_pton(socket.AF_INET, self.remote_ip4)
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self._local_ip6 = "fd01:%u::1" % self.sw_if_index
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self._local_ip6 = "fd01:%04x::1" % self.sw_if_index
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self._local_ip6n = socket.inet_pton(socket.AF_INET6, self.local_ip6)
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self._remote_ip6 = "fd01:%u::2" % self.sw_if_index
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self._remote_ip6n = socket.inet_pton(socket.AF_INET6, self.remote_ip6)
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r = self.test.vapi.sw_interface_dump()
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for intf in r:
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@ -124,6 +155,13 @@ class VppInterface(object):
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self.test.vapi.sw_interface_add_del_address(
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self.sw_if_index, addr, addr_len)
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def configure_extend_ipv4_mac_binding(self):
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"""Configure neighbor MAC to IPv4 addresses."""
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for host in self._remote_hosts:
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macn = host.mac.replace(":", "").decode('hex')
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ipn = host.ip4n
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self.test.vapi.ip_neighbor_add_del(self.sw_if_index, macn, ipn)
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def config_ip6(self):
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"""Configure IPv6 address on the VPP interface"""
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addr = self._local_ip6n
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@ -147,91 +185,6 @@ class VppInterface(object):
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"""Configure IPv6 RA suppress on the VPP interface"""
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self.test.vapi.sw_interface_ra_suppress(self.sw_if_index)
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def create_arp_req(self):
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"""Create ARP request applicable for this interface"""
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return (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.remote_mac) /
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ARP(op=ARP.who_has, pdst=self.local_ip4,
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psrc=self.remote_ip4, hwsrc=self.remote_mac))
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def create_ndp_req(self):
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return (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.remote_mac) /
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IPv6(src=self.remote_ip6, dst=self.local_ip6) /
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ICMPv6ND_NS(tgt=self.local_ip6) /
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ICMPv6NDOptSrcLLAddr(lladdr=self.remote_mac))
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def resolve_arp(self, pg_interface=None):
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"""Resolve ARP using provided packet-generator interface
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:param pg_interface: interface used to resolve, if None then this
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interface is used
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"""
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if pg_interface is None:
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pg_interface = self
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info("Sending ARP request for %s on port %s" %
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(self.local_ip4, pg_interface.name))
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arp_req = self.create_arp_req()
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pg_interface.add_stream(arp_req)
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pg_interface.enable_capture()
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self.test.pg_start()
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info(self.test.vapi.cli("show trace"))
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arp_reply = pg_interface.get_capture()
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if arp_reply is None or len(arp_reply) == 0:
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info("No ARP received on port %s" % pg_interface.name)
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return
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arp_reply = arp_reply[0]
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# Make Dot1AD packet content recognizable to scapy
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if arp_reply.type == 0x88a8:
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arp_reply.type = 0x8100
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arp_reply = Ether(str(arp_reply))
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try:
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if arp_reply[ARP].op == ARP.is_at:
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info("VPP %s MAC address is %s " %
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(self.name, arp_reply[ARP].hwsrc))
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self._local_mac = arp_reply[ARP].hwsrc
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else:
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info("No ARP received on port %s" % pg_interface.name)
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except:
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error("Unexpected response to ARP request:")
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error(arp_reply.show())
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raise
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def resolve_ndp(self, pg_interface=None):
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"""Resolve NDP using provided packet-generator interface
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:param pg_interface: interface used to resolve, if None then this
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interface is used
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"""
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if pg_interface is None:
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pg_interface = self
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info("Sending NDP request for %s on port %s" %
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(self.local_ip6, pg_interface.name))
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ndp_req = self.create_ndp_req()
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pg_interface.add_stream(ndp_req)
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pg_interface.enable_capture()
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self.test.pg_start()
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info(self.test.vapi.cli("show trace"))
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ndp_reply = pg_interface.get_capture()
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if ndp_reply is None or len(ndp_reply) == 0:
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info("No NDP received on port %s" % pg_interface.name)
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return
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ndp_reply = ndp_reply[0]
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# Make Dot1AD packet content recognizable to scapy
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if ndp_reply.type == 0x88a8:
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ndp_reply.type = 0x8100
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ndp_reply = Ether(str(ndp_reply))
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try:
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ndp_na = ndp_reply[ICMPv6ND_NA]
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opt = ndp_na[ICMPv6NDOptDstLLAddr]
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info("VPP %s MAC address is %s " %
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(self.name, opt.lladdr))
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self._local_mac = opt.lladdr
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except:
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error("Unexpected response to NDP request:")
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error(ndp_reply.show())
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raise
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def admin_up(self):
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""" Put interface ADMIN-UP """
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self.test.vapi.sw_interface_set_flags(self.sw_if_index, admin_up_down=1)
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