from abc import abstractmethod, ABCMeta
import socket
-from logging import info, error
-from scapy.layers.l2 import Ether, ARP
+from logging import info
-from scapy.layers.inet6 import IPv6, ICMPv6ND_NS, ICMPv6ND_NA, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptDstLLAddr
+from util import Host
class VppInterface(object):
- """
- Generic VPP interface
- """
+ """Generic VPP interface."""
__metaclass__ = ABCMeta
@property
def sw_if_index(self):
- """Interface index assigned by VPP"""
+ """Interface index assigned by VPP."""
return self._sw_if_index
@property
def remote_mac(self):
- """MAC-address of the remote interface "connected" to this interface"""
- return self._remote_mac
+ """MAC-address of the remote interface "connected" to this interface."""
+ return self._remote_hosts[0].mac
@property
def local_mac(self):
- """MAC-address of the VPP interface"""
+ """MAC-address of the VPP interface."""
return self._local_mac
@property
def local_ip4(self):
- """Local IPv4 address on VPP interface (string)"""
+ """Local IPv4 address on VPP interface (string)."""
return self._local_ip4
@property
def local_ip4n(self):
- """Local IPv4 address - raw, suitable as API parameter"""
- return self._local_ip4n
+ """Local IPv4 address - raw, suitable as API parameter."""
+ return socket.inet_pton(socket.AF_INET, self._local_ip4)
@property
def remote_ip4(self):
- """IPv4 address of remote peer "connected" to this interface"""
- return self._remote_ip4
+ """IPv4 address of remote peer "connected" to this interface."""
+ return self._remote_hosts[0].ip4
@property
def remote_ip4n(self):
- """IPv4 address of remote peer - raw, suitable as API parameter"""
- return self._remote_ip4n
+ """IPv4 address of remote peer - raw, suitable as API parameter."""
+ return socket.inet_pton(socket.AF_INET, self.remote_ip4)
@property
def local_ip6(self):
- """Local IPv6 address on VPP interface (string)"""
+ """Local IPv6 address on VPP interface (string)."""
return self._local_ip6
@property
def local_ip6n(self):
- """Local IPv6 address - raw, suitable as API parameter"""
- return self._local_ip6n
+ """Local IPv6 address - raw, suitable as API parameter."""
+ return socket.inet_pton(socket.AF_INET6, self.local_ip6)
@property
def remote_ip6(self):
- """IPv6 address of remote peer "connected" to this interface"""
- return self._remote_ip6
+ """IPv6 address of remote peer "connected" to this interface."""
+ return self._remote_hosts[0].ip6
@property
def remote_ip6n(self):
"""IPv6 address of remote peer - raw, suitable as API parameter"""
- return self._remote_ip6n
+ return socket.inet_pton(socket.AF_INET6, self.remote_ip6)
@property
def name(self):
- """Name of the interface"""
+ """Name of the interface."""
return self._name
@property
def dump(self):
- """Raw result of sw_interface_dump for this interface"""
+ """RAW result of sw_interface_dump for this interface."""
return self._dump
@property
def test(self):
- """Test case creating this interface"""
+ """Test case creating this interface."""
return self._test
+ @property
+ def remote_hosts(self):
+ """Remote hosts list"""
+ return self._remote_hosts
+
+ @remote_hosts.setter
+ def remote_hosts(self, value):
+ """
+ :param list value: List of remote hosts.
+ """
+ self._remote_hosts = value
+ self._hosts_by_mac = {}
+ self._hosts_by_ip4 = {}
+ self._hosts_by_ip6 = {}
+ for host in self._remote_hosts:
+ self._hosts_by_mac[host.mac] = host
+ self._hosts_by_ip4[host.ip4] = host
+ self._hosts_by_ip6[host.ip6] = host
+
+ def host_by_mac(self, mac):
+ """
+ :param ip: MAC address to find host by.
+ :return: Host object assigned to interface.
+ """
+ return self._hosts_by_mac[mac]
+
+ def host_by_ip4(self, ip):
+ """
+ :param ip: IPv4 address to find host by.
+ :return: Host object assigned to interface.
+ """
+ return self._hosts_by_ip4[ip]
+
+ def host_by_ip6(self, ip):
+ """
+ :param ip: IPv6 address to find host by.
+ :return: Host object assigned to interface.
+ """
+ return self._hosts_by_ip6[ip]
+
+ def generate_remote_hosts(self, count=1):
+ """Generate and add remote hosts for the interface.
+
+ :param int count: Number of generated remote hosts.
+ """
+ self._remote_hosts = []
+ self._hosts_by_mac = {}
+ self._hosts_by_ip4 = {}
+ self._hosts_by_ip6 = {}
+ for i in range(2, count+2): # 0: network address, 1: local vpp address
+ mac = "02:%02x:00:00:ff:%02x" % (self.sw_if_index, i)
+ ip4 = "172.16.%u.%u" % (self.sw_if_index, i)
+ ip6 = "fd01:%04x::%04x" % (self.sw_if_index, i)
+ host = Host(mac, ip4, ip6)
+ self._remote_hosts.append(host)
+ self._hosts_by_mac[mac] = host
+ self._hosts_by_ip4[ip4] = host
+ self._hosts_by_ip6[ip6] = host
+
def post_init_setup(self):
- """Additional setup run after creating an interface object"""
- self._remote_mac = "02:00:00:00:ff:%02x" % self.sw_if_index
+ """Additional setup run after creating an interface object."""
+
+ self.generate_remote_hosts()
self._local_ip4 = "172.16.%u.1" % self.sw_if_index
self._local_ip4n = socket.inet_pton(socket.AF_INET, self.local_ip4)
- self._remote_ip4 = "172.16.%u.2" % self.sw_if_index
- self._remote_ip4n = socket.inet_pton(socket.AF_INET, self.remote_ip4)
- self._local_ip6 = "fd01:%u::1" % self.sw_if_index
+ self._local_ip6 = "fd01:%04x::1" % self.sw_if_index
self._local_ip6n = socket.inet_pton(socket.AF_INET6, self.local_ip6)
- self._remote_ip6 = "fd01:%u::2" % self.sw_if_index
- self._remote_ip6n = socket.inet_pton(socket.AF_INET6, self.remote_ip6)
r = self.test.vapi.sw_interface_dump()
for intf in r:
(self.__name__, self.remote_mac, self.remote_ip4, self.local_ip4))
def config_ip4(self):
- """Configure IPv4 address on the VPP interface"""
+ """Configure IPv4 address on the VPP interface."""
addr = self.local_ip4n
addr_len = 24
self.test.vapi.sw_interface_add_del_address(
self.sw_if_index, addr, addr_len)
+ def configure_ipv4_neighbors(self):
+ """For every remote host assign neighbor's MAC to IPv4 addresses."""
+ for host in self._remote_hosts:
+ macn = host.mac.replace(":", "").decode('hex')
+ ipn = host.ip4n
+ self.test.vapi.ip_neighbor_add_del(self.sw_if_index, macn, ipn)
+
def config_ip6(self):
- """Configure IPv6 address on the VPP interface"""
+ """Configure IPv6 address on the VPP interface."""
addr = self._local_ip6n
addr_len = 64
self.test.vapi.sw_interface_add_del_address(
def set_table_ip4(self, table_id):
"""Set the interface in a IPv4 Table.
- Must be called before configuring IP4 addresses"""
+
+ .. note:: Must be called before configuring IP4 addresses."""
self.test.vapi.sw_interface_set_table(
self.sw_if_index, 0, table_id)
def set_table_ip6(self, table_id):
"""Set the interface in a IPv6 Table.
- Must be called before configuring IP6 addresses"""
+
+ .. note:: Must be called before configuring IP6 addresses.
+ """
self.test.vapi.sw_interface_set_table(
self.sw_if_index, 1, table_id)
def disable_ipv6_ra(self):
- """Configure IPv6 RA suppress on the VPP interface"""
+ """Configure IPv6 RA suppress on the VPP interface."""
self.test.vapi.sw_interface_ra_suppress(self.sw_if_index)
- def create_arp_req(self):
- """Create ARP request applicable for this interface"""
- return (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.remote_mac) /
- ARP(op=ARP.who_has, pdst=self.local_ip4,
- psrc=self.remote_ip4, hwsrc=self.remote_mac))
-
- def create_ndp_req(self):
- return (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.remote_mac) /
- IPv6(src=self.remote_ip6, dst=self.local_ip6) /
- ICMPv6ND_NS(tgt=self.local_ip6) /
- ICMPv6NDOptSrcLLAddr(lladdr=self.remote_mac))
-
- def resolve_arp(self, pg_interface=None):
- """Resolve ARP using provided packet-generator interface
-
- :param pg_interface: interface used to resolve, if None then this
- interface is used
-
- """
- if pg_interface is None:
- pg_interface = self
- info("Sending ARP request for %s on port %s" %
- (self.local_ip4, pg_interface.name))
- arp_req = self.create_arp_req()
- pg_interface.add_stream(arp_req)
- pg_interface.enable_capture()
- self.test.pg_start()
- info(self.test.vapi.cli("show trace"))
- arp_reply = pg_interface.get_capture()
- if arp_reply is None or len(arp_reply) == 0:
- info("No ARP received on port %s" % pg_interface.name)
- return
- arp_reply = arp_reply[0]
- # Make Dot1AD packet content recognizable to scapy
- if arp_reply.type == 0x88a8:
- arp_reply.type = 0x8100
- arp_reply = Ether(str(arp_reply))
- try:
- if arp_reply[ARP].op == ARP.is_at:
- info("VPP %s MAC address is %s " %
- (self.name, arp_reply[ARP].hwsrc))
- self._local_mac = arp_reply[ARP].hwsrc
- else:
- info("No ARP received on port %s" % pg_interface.name)
- except:
- error("Unexpected response to ARP request:")
- error(arp_reply.show())
- raise
-
- def resolve_ndp(self, pg_interface=None):
- """Resolve NDP using provided packet-generator interface
-
- :param pg_interface: interface used to resolve, if None then this
- interface is used
-
- """
- if pg_interface is None:
- pg_interface = self
- info("Sending NDP request for %s on port %s" %
- (self.local_ip6, pg_interface.name))
- ndp_req = self.create_ndp_req()
- pg_interface.add_stream(ndp_req)
- pg_interface.enable_capture()
- self.test.pg_start()
- info(self.test.vapi.cli("show trace"))
- ndp_reply = pg_interface.get_capture()
- if ndp_reply is None or len(ndp_reply) == 0:
- info("No NDP received on port %s" % pg_interface.name)
- return
- ndp_reply = ndp_reply[0]
- # Make Dot1AD packet content recognizable to scapy
- if ndp_reply.type == 0x88a8:
- ndp_reply.type = 0x8100
- ndp_reply = Ether(str(ndp_reply))
- try:
- ndp_na = ndp_reply[ICMPv6ND_NA]
- opt = ndp_na[ICMPv6NDOptDstLLAddr]
- info("VPP %s MAC address is %s " %
- (self.name, opt.lladdr))
- self._local_mac = opt.lladdr
- except:
- error("Unexpected response to NDP request:")
- error(ndp_reply.show())
- raise
-
def admin_up(self):
- """ Put interface ADMIN-UP """
+ """Put interface ADMIN-UP."""
self.test.vapi.sw_interface_set_flags(self.sw_if_index, admin_up_down=1)
def add_sub_if(self, sub_if):
- """
- Register a sub-interface with this interface
+ """Register a sub-interface with this interface.
:param sub_if: sub-interface
-
"""
if not hasattr(self, 'sub_if'):
self.sub_if = sub_if
self.sub_if = sub_if
def enable_mpls(self):
- """Enable MPLS on the VPP interface"""
+ """Enable MPLS on the VPP interface."""
self.test.vapi.sw_interface_enable_disable_mpls(
self.sw_if_index)
Code Review / vpp.git / blobdiff