test/vpp_interface.py

   1 from abc import abstractmethod, ABCMeta
   2 import socket
   3
   4 from util import Host
   5
   6
   7 class VppInterface(object):
   8     """Generic VPP interface."""
   9     __metaclass__ = ABCMeta
  10
  11     @property
  12     def sw_if_index(self):
  13         """Interface index assigned by VPP."""
  14         return self._sw_if_index
  15
  16     @property
  17     def remote_mac(self):
  18         """MAC-address of the remote interface "connected" to this interface."""
  19         return self._remote_hosts[0].mac
  20
  21     @property
  22     def local_mac(self):
  23         """MAC-address of the VPP interface."""
  24         return self._local_mac
  25
  26     @property
  27     def local_ip4(self):
  28         """Local IPv4 address on VPP interface (string)."""
  29         return self._local_ip4
  30
  31     @property
  32     def local_ip4n(self):
  33         """Local IPv4 address - raw, suitable as API parameter."""
  34         return socket.inet_pton(socket.AF_INET, self._local_ip4)
  35
  36     @property
  37     def remote_ip4(self):
  38         """IPv4 address of remote peer "connected" to this interface."""
  39         return self._remote_hosts[0].ip4
  40
  41     @property
  42     def remote_ip4n(self):
  43         """IPv4 address of remote peer - raw, suitable as API parameter."""
  44         return socket.inet_pton(socket.AF_INET, self.remote_ip4)
  45
  46     @property
  47     def local_ip6(self):
  48         """Local IPv6 address on VPP interface (string)."""
  49         return self._local_ip6
  50
  51     @property
  52     def local_ip6n(self):
  53         """Local IPv6 address - raw, suitable as API parameter."""
  54         return socket.inet_pton(socket.AF_INET6, self.local_ip6)
  55
  56     @property
  57     def remote_ip6(self):
  58         """IPv6 address of remote peer "connected" to this interface."""
  59         return self._remote_hosts[0].ip6
  60
  61     @property
  62     def remote_ip6n(self):
  63         """IPv6 address of remote peer - raw, suitable as API parameter"""
  64         return socket.inet_pton(socket.AF_INET6, self.remote_ip6)
  65
  66     @property
  67     def name(self):
  68         """Name of the interface."""
  69         return self._name
  70
  71     @property
  72     def dump(self):
  73         """RAW result of sw_interface_dump for this interface."""
  74         return self._dump
  75
  76     @property
  77     def test(self):
  78         """Test case creating this interface."""
  79         return self._test
  80
  81     @property
  82     def remote_hosts(self):
  83         """Remote hosts list"""
  84         return self._remote_hosts
  85
  86     @remote_hosts.setter
  87     def remote_hosts(self, value):
  88         """
  89         :param list value: List of remote hosts.
  90         """
  91         self._remote_hosts = value
  92         self._hosts_by_mac = {}
  93         self._hosts_by_ip4 = {}
  94         self._hosts_by_ip6 = {}
  95         for host in self._remote_hosts:
  96             self._hosts_by_mac[host.mac] = host
  97             self._hosts_by_ip4[host.ip4] = host
  98             self._hosts_by_ip6[host.ip6] = host
  99
 100     def host_by_mac(self, mac):
 101         """
 102         :param mac: MAC address to find host by.
 103         :return: Host object assigned to interface.
 104         """
 105         return self._hosts_by_mac[mac]
 106
 107     def host_by_ip4(self, ip):
 108         """
 109         :param ip: IPv4 address to find host by.
 110         :return: Host object assigned to interface.
 111         """
 112         return self._hosts_by_ip4[ip]
 113
 114     def host_by_ip6(self, ip):
 115         """
 116         :param ip: IPv6 address to find host by.
 117         :return: Host object assigned to interface.
 118         """
 119         return self._hosts_by_ip6[ip]
 120
 121     def generate_remote_hosts(self, count=1):
 122         """Generate and add remote hosts for the interface.
 123
 124         :param int count: Number of generated remote hosts.
 125         """
 126         self._remote_hosts = []
 127         self._hosts_by_mac = {}
 128         self._hosts_by_ip4 = {}
 129         self._hosts_by_ip6 = {}
 130         for i in range(
 131                 2, count + 2):  # 0: network address, 1: local vpp address
 132             mac = "02:%02x:00:00:ff:%02x" % (self.sw_if_index, i)
 133             ip4 = "172.16.%u.%u" % (self.sw_if_index, i)
 134             ip6 = "fd01:%04x::%04x" % (self.sw_if_index, i)
 135             host = Host(mac, ip4, ip6)
 136             self._remote_hosts.append(host)
 137             self._hosts_by_mac[mac] = host
 138             self._hosts_by_ip4[ip4] = host
 139             self._hosts_by_ip6[ip6] = host
 140
 141     @abstractmethod
 142     def __init__(self, test):
 143         self._test = test
 144
 145         self._remote_hosts = []
 146         self._hosts_by_mac = {}
 147         self._hosts_by_ip4 = {}
 148         self._hosts_by_ip6 = {}
 149
 150         self.generate_remote_hosts()
 151
 152         self._local_ip4 = "172.16.%u.1" % self.sw_if_index
 153         self._local_ip4n = socket.inet_pton(socket.AF_INET, self.local_ip4)
 154         self.local_ip4_prefix_len = 24
 155         self.has_ip4_config = False
 156         self.ip4_table_id = 0
 157
 158         self._local_ip6 = "fd01:%04x::1" % self.sw_if_index
 159         self._local_ip6n = socket.inet_pton(socket.AF_INET6, self.local_ip6)
 160         self.local_ip6_prefix_len = 64
 161         self.has_ip6_config = False
 162         self.ip6_table_id = 0
 163
 164         r = self.test.vapi.sw_interface_dump()
 165         for intf in r:
 166             if intf.sw_if_index == self.sw_if_index:
 167                 self._name = intf.interface_name.split(b'\0', 1)[0]
 168                 self._local_mac = \
 169                     ':'.join(intf.l2_address.encode('hex')[i:i + 2]
 170                              for i in range(0, 12, 2))
 171                 self._dump = intf
 172                 break
 173         else:
 174             raise Exception(
 175                 "Could not find interface with sw_if_index %d "
 176                 "in interface dump %s" %
 177                 (self.sw_if_index, repr(r)))
 178
 179     def config_ip4(self):
 180         """Configure IPv4 address on the VPP interface."""
 181         self.test.vapi.sw_interface_add_del_address(
 182             self.sw_if_index, self.local_ip4n, self.local_ip4_prefix_len)
 183         self.has_ip4_config = True
 184
 185     def unconfig_ip4(self):
 186         """Remove IPv4 address on the VPP interface."""
 187         try:
 188             if self.has_ip4_config:
 189                 self.test.vapi.sw_interface_add_del_address(
 190                     self.sw_if_index,
 191                     self.local_ip4n,
 192                     self.local_ip4_prefix_len,
 193                     is_add=0)
 194         except AttributeError:
 195             self.has_ip4_config = False
 196         self.has_ip4_config = False
 197
 198     def configure_ipv4_neighbors(self):
 199         """For every remote host assign neighbor's MAC to IPv4 addresses."""
 200         for host in self._remote_hosts:
 201             macn = host.mac.replace(":", "").decode('hex')
 202             ipn = host.ip4n
 203             self.test.vapi.ip_neighbor_add_del(self.sw_if_index, macn, ipn)
 204
 205     def config_ip6(self):
 206         """Configure IPv6 address on the VPP interface."""
 207         self.test.vapi.sw_interface_add_del_address(
 208             self.sw_if_index, self._local_ip6n, self.local_ip6_prefix_len,
 209             is_ipv6=1)
 210         self.has_ip6_config = True
 211
 212     def unconfig_ip6(self):
 213         """Remove IPv6 address on the VPP interface."""
 214         try:
 215             if self.has_ip6_config:
 216                 self.test.vapi.sw_interface_add_del_address(
 217                     self.sw_if_index,
 218                     self.local_ip6n,
 219                     self.local_ip6_prefix_len,
 220                     is_ipv6=1, is_add=0)
 221         except AttributeError:
 222             self.has_ip6_config = False
 223         self.has_ip6_config = False
 224
 225     def unconfig(self):
 226         """Unconfigure IPv6 and IPv4 address on the VPP interface."""
 227         self.unconfig_ip4()
 228         self.unconfig_ip6()
 229
 230     def set_table_ip4(self, table_id):
 231         """Set the interface in a IPv4 Table.
 232
 233         .. note:: Must be called before configuring IP4 addresses.
 234         """
 235         self.ip4_table_id = table_id
 236         self.test.vapi.sw_interface_set_table(
 237             self.sw_if_index, 0, self.ip4_table_id)
 238
 239     def set_table_ip6(self, table_id):
 240         """Set the interface in a IPv6 Table.
 241
 242         .. note:: Must be called before configuring IP6 addresses.
 243         """
 244         self.ip6_table_id = table_id
 245         self.test.vapi.sw_interface_set_table(
 246             self.sw_if_index, 1, self.ip6_table_id)
 247
 248     def disable_ipv6_ra(self):
 249         """Configure IPv6 RA suppress on the VPP interface."""
 250         self.test.vapi.sw_interface_ra_suppress(self.sw_if_index)
 251
 252     def ip6_ra_config(self, suppress=0, send_unicast=0):
 253         """Configure IPv6 RA suppress on the VPP interface."""
 254         self.test.vapi.ip6_sw_interface_ra_config(self.sw_if_index,
 255                                                   suppress,
 256                                                   send_unicast)
 257
 258     def admin_up(self):
 259         """Put interface ADMIN-UP."""
 260         self.test.vapi.sw_interface_set_flags(self.sw_if_index, admin_up_down=1)
 261
 262     def admin_down(self):
 263         """Put interface ADMIN-down."""
 264         self.test.vapi.sw_interface_set_flags(self.sw_if_index, admin_up_down=0)
 265
 266     def ip6_enable(self):
 267         """IPv6 Enable interface"""
 268         self.test.vapi.ip6_sw_interface_enable_disable(self.sw_if_index, enable=1)
 269
 270     def ip6_disable(self):
 271         """Put interface ADMIN-DOWN."""
 272         self.test.vapi.ip6_sw_interface_enable_disable(self.sw_if_index, enable=0)
 273
 274     def add_sub_if(self, sub_if):
 275         """Register a sub-interface with this interface.
 276
 277         :param sub_if: sub-interface
 278         """
 279         if not hasattr(self, 'sub_if'):
 280             self.sub_if = sub_if
 281         else:
 282             if isinstance(self.sub_if, list):
 283                 self.sub_if.append(sub_if)
 284             else:
 285                 self.sub_if = sub_if
 286
 287     def enable_mpls(self):
 288         """Enable MPLS on the VPP interface."""
 289         self.test.vapi.sw_interface_enable_disable_mpls(
 290             self.sw_if_index)
 291
 292     def is_ip4_entry_in_fib_dump(self, dump):
 293         for i in dump:
 294             if i.address == self.local_ip4n and \
 295                i.address_length == self.local_ip4_prefix_len and \
 296                i.table_id == self.ip4_table_id:
 297                 return True
 298         return False