test/vpp_interface.py

   1 import binascii
   2 import socket
   3 import abc
   4
   5 import six
   6 from six import moves
   7
   8 from util import Host, mk_ll_addr
   9 from vpp_papi import mac_ntop
  10
  11
  12 @six.add_metaclass(abc.ABCMeta)
  13 class VppInterface(object):
  14     """Generic VPP interface."""
  15
  16     @property
  17     def sw_if_index(self):
  18         """Interface index assigned by VPP."""
  19         return self._sw_if_index
  20
  21     @property
  22     def remote_mac(self):
  23         """MAC-address of the remote interface "connected" to this interface"""
  24         return self._remote_hosts[0].mac
  25
  26     @property
  27     def local_mac(self):
  28         """MAC-address of the VPP interface."""
  29         return self._local_mac
  30
  31     @property
  32     def local_addr(self):
  33         return self._local_addr
  34
  35     @property
  36     def remote_addr(self):
  37         return self._remote_addr
  38
  39     @property
  40     def local_addr_n(self):
  41         return self._local_addr_n
  42
  43     @property
  44     def remote_addr_n(self):
  45         return self._remote_addr_n
  46
  47     @property
  48     def local_ip4(self):
  49         """Local IPv4 address on VPP interface (string)."""
  50         return self._local_ip4
  51
  52     @property
  53     def local_ip4n(self):
  54         """Local IPv4 address - raw, suitable as API parameter."""
  55         return socket.inet_pton(socket.AF_INET, self._local_ip4)
  56
  57     @property
  58     def remote_ip4(self):
  59         """IPv4 address of remote peer "connected" to this interface."""
  60         return self._remote_hosts[0].ip4
  61
  62     @property
  63     def remote_ip4n(self):
  64         """IPv4 address of remote peer - raw, suitable as API parameter."""
  65         return socket.inet_pton(socket.AF_INET, self.remote_ip4)
  66
  67     @property
  68     def local_ip6(self):
  69         """Local IPv6 address on VPP interface (string)."""
  70         return self._local_ip6
  71
  72     @property
  73     def local_ip6n(self):
  74         """Local IPv6 address - raw, suitable as API parameter."""
  75         return socket.inet_pton(socket.AF_INET6, self.local_ip6)
  76
  77     @property
  78     def remote_ip6(self):
  79         """IPv6 address of remote peer "connected" to this interface."""
  80         return self._remote_hosts[0].ip6
  81
  82     @property
  83     def remote_ip6n(self):
  84         """IPv6 address of remote peer - raw, suitable as API parameter"""
  85         return socket.inet_pton(socket.AF_INET6, self.remote_ip6)
  86
  87     @property
  88     def local_ip6_ll(self):
  89         """Local IPv6 link-local address on VPP interface (string)."""
  90         return self._local_ip6_ll
  91
  92     @property
  93     def local_ip6n_ll(self):
  94         """Local IPv6 link-local address - raw, suitable as API parameter."""
  95         return self._local_ip6n_ll
  96
  97     @property
  98     def remote_ip6_ll(self):
  99         """Link-local IPv6 address of remote peer
 100         "connected" to this interface."""
 101         return self._remote_ip6_ll
 102
 103     @property
 104     def remote_ip6n_ll(self):
 105         """Link-local IPv6 address of remote peer
 106         - raw, suitable as API parameter"""
 107         return self._remote_ip6n_ll
 108
 109     @property
 110     def name(self):
 111         """Name of the interface."""
 112         return self._name
 113
 114     @property
 115     def dump(self):
 116         """RAW result of sw_interface_dump for this interface."""
 117         return self._dump
 118
 119     @property
 120     def test(self):
 121         """Test case creating this interface."""
 122         return self._test
 123
 124     @property
 125     def remote_hosts(self):
 126         """Remote hosts list"""
 127         return self._remote_hosts
 128
 129     @remote_hosts.setter
 130     def remote_hosts(self, value):
 131         """
 132         :param list value: List of remote hosts.
 133         """
 134         self._remote_hosts = value
 135         self._hosts_by_mac = {}
 136         self._hosts_by_ip4 = {}
 137         self._hosts_by_ip6 = {}
 138         for host in self._remote_hosts:
 139             self._hosts_by_mac[host.mac] = host
 140             self._hosts_by_ip4[host.ip4] = host
 141             self._hosts_by_ip6[host.ip6] = host
 142
 143     def host_by_mac(self, mac):
 144         """
 145         :param mac: MAC address to find host by.
 146         :return: Host object assigned to interface.
 147         """
 148         return self._hosts_by_mac[mac]
 149
 150     def host_by_ip4(self, ip):
 151         """
 152         :param ip: IPv4 address to find host by.
 153         :return: Host object assigned to interface.
 154         """
 155         return self._hosts_by_ip4[ip]
 156
 157     def host_by_ip6(self, ip):
 158         """
 159         :param ip: IPv6 address to find host by.
 160         :return: Host object assigned to interface.
 161         """
 162         return self._hosts_by_ip6[ip]
 163
 164     def generate_remote_hosts(self, count=1):
 165         """Generate and add remote hosts for the interface.
 166
 167         :param int count: Number of generated remote hosts.
 168         """
 169         self._remote_hosts = []
 170         self._hosts_by_mac = {}
 171         self._hosts_by_ip4 = {}
 172         self._hosts_by_ip6 = {}
 173         for i in range(
 174                 2, count + 2):  # 0: network address, 1: local vpp address
 175             mac = "02:%02x:00:00:ff:%02x" % (self.sw_if_index, i)
 176             ip4 = "172.16.%u.%u" % (self.sw_if_index, i)
 177             ip6 = "fd01:%x::%x" % (self.sw_if_index, i)
 178             ip6_ll = mk_ll_addr(mac)
 179             host = Host(mac, ip4, ip6, ip6_ll)
 180             self._remote_hosts.append(host)
 181             self._hosts_by_mac[mac] = host
 182             self._hosts_by_ip4[ip4] = host
 183             self._hosts_by_ip6[ip6] = host
 184
 185     @abc.abstractmethod
 186     def __init__(self, test):
 187         self._test = test
 188
 189         self._remote_hosts = []
 190         self._hosts_by_mac = {}
 191         self._hosts_by_ip4 = {}
 192         self._hosts_by_ip6 = {}
 193
 194     def set_mac(self, mac):
 195         self._local_mac = str(mac)
 196         self._local_ip6_ll = mk_ll_addr(self._local_mac)
 197         self.test.vapi.sw_interface_set_mac_address(
 198             self.sw_if_index, mac.packed)
 199
 200     def set_sw_if_index(self, sw_if_index):
 201         self._sw_if_index = sw_if_index
 202
 203         self.generate_remote_hosts()
 204
 205         self._local_ip4 = "172.16.%u.1" % self.sw_if_index
 206         self._local_ip4n = socket.inet_pton(socket.AF_INET, self.local_ip4)
 207         self._local_ip4_subnet = "172.16.%u.0" % self.sw_if_index
 208         self._local_ip4n_subnet = socket.inet_pton(socket.AF_INET,
 209                                                    self._local_ip4_subnet)
 210         self._local_ip4_bcast = "172.16.%u.255" % self.sw_if_index
 211         self._local_ip4n_bcast = socket.inet_pton(socket.AF_INET,
 212                                                   self._local_ip4_bcast)
 213         self.local_ip4_prefix_len = 24
 214         self.has_ip4_config = False
 215         self.ip4_table_id = 0
 216
 217         self._local_ip6 = "fd01:%x::1" % self.sw_if_index
 218         self._local_ip6n = socket.inet_pton(socket.AF_INET6, self.local_ip6)
 219         self.local_ip6_prefix_len = 64
 220         self.has_ip6_config = False
 221         self.ip6_table_id = 0
 222
 223         self._local_addr = {socket.AF_INET: self.local_ip4,
 224                             socket.AF_INET6: self.local_ip6}
 225         self._local_addr_n = {socket.AF_INET: self.local_ip4n,
 226                               socket.AF_INET6: self.local_ip6n}
 227         self._remote_addr = {socket.AF_INET: self.remote_ip4,
 228                              socket.AF_INET6: self.remote_ip6}
 229         self._remote_addr_n = {socket.AF_INET: self.remote_ip4n,
 230                                socket.AF_INET6: self.remote_ip6n}
 231
 232         r = self.test.vapi.sw_interface_dump()
 233         for intf in r:
 234             if intf.sw_if_index == self.sw_if_index:
 235                 self._name = intf.interface_name.split(b'\0',
 236                                                        1)[0].decode('utf8')
 237                 self._local_mac = mac_ntop(intf.l2_address)
 238                 self._dump = intf
 239                 break
 240         else:
 241             raise Exception(
 242                 "Could not find interface with sw_if_index %d "
 243                 "in interface dump %s" %
 244                 (self.sw_if_index, moves.reprlib.repr(r)))
 245         self._local_ip6_ll = mk_ll_addr(self.local_mac)
 246         self._local_ip6n_ll = socket.inet_pton(socket.AF_INET6,
 247                                                self.local_ip6_ll)
 248         self._remote_ip6_ll = mk_ll_addr(self.remote_mac)
 249         self._remote_ip6n_ll = socket.inet_pton(socket.AF_INET6,
 250                                                 self.remote_ip6_ll)
 251
 252     def config_ip4(self):
 253         """Configure IPv4 address on the VPP interface."""
 254         self.test.vapi.sw_interface_add_del_address(
 255             self.sw_if_index, self.local_ip4n, self.local_ip4_prefix_len)
 256         self.has_ip4_config = True
 257
 258     def unconfig_ip4(self):
 259         """Remove IPv4 address on the VPP interface."""
 260         try:
 261             if self.has_ip4_config:
 262                 self.test.vapi.sw_interface_add_del_address(
 263                     self.sw_if_index,
 264                     self.local_ip4n,
 265                     self.local_ip4_prefix_len,
 266                     is_add=0)
 267         except AttributeError:
 268             self.has_ip4_config = False
 269         self.has_ip4_config = False
 270
 271     def configure_ipv4_neighbors(self):
 272         """For every remote host assign neighbor's MAC to IPv4 addresses.
 273
 274         :param vrf_id: The FIB table / VRF ID. (Default value = 0)
 275         """
 276         for host in self._remote_hosts:
 277             self.test.vapi.ip_neighbor_add_del(self.sw_if_index,
 278                                                host.mac,
 279                                                host.ip4)
 280
 281     def config_ip6(self):
 282         """Configure IPv6 address on the VPP interface."""
 283         self.test.vapi.sw_interface_add_del_address(
 284             self.sw_if_index, self._local_ip6n, self.local_ip6_prefix_len,
 285             is_ipv6=1)
 286         self.has_ip6_config = True
 287
 288     def unconfig_ip6(self):
 289         """Remove IPv6 address on the VPP interface."""
 290         try:
 291             if self.has_ip6_config:
 292                 self.test.vapi.sw_interface_add_del_address(
 293                     self.sw_if_index,
 294                     self.local_ip6n,
 295                     self.local_ip6_prefix_len,
 296                     is_ipv6=1, is_add=0)
 297         except AttributeError:
 298             self.has_ip6_config = False
 299         self.has_ip6_config = False
 300
 301     def configure_ipv6_neighbors(self):
 302         """For every remote host assign neighbor's MAC to IPv6 addresses.
 303
 304         :param vrf_id: The FIB table / VRF ID. (Default value = 0)
 305         """
 306         for host in self._remote_hosts:
 307             self.test.vapi.ip_neighbor_add_del(self.sw_if_index,
 308                                                host.mac,
 309                                                host.ip6)
 310
 311     def unconfig(self):
 312         """Unconfigure IPv6 and IPv4 address on the VPP interface."""
 313         self.unconfig_ip4()
 314         self.unconfig_ip6()
 315
 316     def set_table_ip4(self, table_id):
 317         """Set the interface in a IPv4 Table.
 318
 319         .. note:: Must be called before configuring IP4 addresses.
 320         """
 321         self.ip4_table_id = table_id
 322         self.test.vapi.sw_interface_set_table(
 323             self.sw_if_index, 0, self.ip4_table_id)
 324
 325     def set_table_ip6(self, table_id):
 326         """Set the interface in a IPv6 Table.
 327
 328         .. note:: Must be called before configuring IP6 addresses.
 329         """
 330         self.ip6_table_id = table_id
 331         self.test.vapi.sw_interface_set_table(
 332             self.sw_if_index, 1, self.ip6_table_id)
 333
 334     def disable_ipv6_ra(self):
 335         """Configure IPv6 RA suppress on the VPP interface."""
 336         self.test.vapi.sw_interface_ip6nd_ra_config(
 337             sw_if_index=self.sw_if_index,
 338             suppress=1)
 339
 340     def ip6_ra_config(self, no=0, suppress=0, send_unicast=0):
 341         """Configure IPv6 RA suppress on the VPP interface."""
 342         self.test.vapi.sw_interface_ip6nd_ra_config(
 343             sw_if_index=self.sw_if_index,
 344             is_no=no,
 345             suppress=suppress,
 346             send_unicast=send_unicast)
 347
 348     def ip6_ra_prefix(self, address, address_length, is_no=0,
 349                       off_link=0, no_autoconfig=0, use_default=0):
 350         """Configure IPv6 RA suppress on the VPP interface."""
 351         self.test.vapi.sw_interface_ip6nd_ra_prefix(
 352             self.sw_if_index,
 353             address,
 354             address_length,
 355             is_no=is_no,
 356             off_link=off_link,
 357             no_autoconfig=no_autoconfig,
 358             use_default=use_default)
 359
 360     def admin_up(self):
 361         """Put interface ADMIN-UP."""
 362         self.test.vapi.sw_interface_set_flags(self.sw_if_index,
 363                                               admin_up_down=1)
 364
 365     def admin_down(self):
 366         """Put interface ADMIN-down."""
 367         self.test.vapi.sw_interface_set_flags(self.sw_if_index,
 368                                               admin_up_down=0)
 369
 370     def ip6_enable(self):
 371         """IPv6 Enable interface"""
 372         self.test.vapi.sw_interface_ip6_enable_disable(self.sw_if_index,
 373                                                        enable=1)
 374
 375     def ip6_disable(self):
 376         """Put interface ADMIN-DOWN."""
 377         self.test.vapi.sw_interface_ip6_enable_disable(self.sw_if_index,
 378                                                        enable=0)
 379
 380     def add_sub_if(self, sub_if):
 381         """Register a sub-interface with this interface.
 382
 383         :param sub_if: sub-interface
 384         """
 385         if not hasattr(self, 'sub_if'):
 386             self.sub_if = sub_if
 387         else:
 388             if isinstance(self.sub_if, list):
 389                 self.sub_if.append(sub_if)
 390             else:
 391                 self.sub_if = sub_if
 392
 393     def enable_mpls(self):
 394         """Enable MPLS on the VPP interface."""
 395         self.test.vapi.sw_interface_set_mpls_enable(
 396             self.sw_if_index)
 397
 398     def disable_mpls(self):
 399         """Enable MPLS on the VPP interface."""
 400         self.test.vapi.sw_interface_set_mpls_enable(
 401             self.sw_if_index, 0)
 402
 403     def is_ip4_entry_in_fib_dump(self, dump):
 404         for i in dump:
 405             if i.address == self.local_ip4n and \
 406                i.address_length == self.local_ip4_prefix_len and \
 407                i.table_id == self.ip4_table_id:
 408                 return True
 409         return False
 410
 411     def set_unnumbered(self, ip_sw_if_index):
 412         """ Set the interface to unnumbered via ip_sw_if_index """
 413         self.test.vapi.sw_interface_set_unnumbered(
 414             self.sw_if_index,
 415             ip_sw_if_index)
 416
 417     def unset_unnumbered(self, ip_sw_if_index):
 418         """ Unset the interface to unnumbered via ip_sw_if_index """
 419         self.test.vapi.sw_interface_set_unnumbered(
 420             self.sw_if_index,
 421             ip_sw_if_index,
 422             is_add=0)
 423
 424     def set_proxy_arp(self, enable=1):
 425         """ Set the interface to enable/disable Proxy ARP """
 426         self.test.vapi.proxy_arp_intfc_enable_disable(
 427             self.sw_if_index,
 428             enable)
 429
 430     def query_vpp_config(self):
 431         dump = self.test.vapi.sw_interface_dump()
 432         return self.is_interface_config_in_dump(dump)
 433
 434     def get_interface_config_from_dump(self, dump):
 435         for i in dump:
 436             if i.interface_name.rstrip(' \t\r\n\0') == self.name and \
 437                i.sw_if_index == self.sw_if_index:
 438                 return i
 439         else:
 440             return None
 441
 442     def is_interface_config_in_dump(self, dump):
 443         return self.get_interface_config_from_dump(dump) is not None
 444
 445     def assert_interface_state(self, admin_up_down, link_up_down,
 446                                expect_event=False):
 447         if expect_event:
 448             event = self.test.vapi.wait_for_event(timeout=1,
 449                                                   name='sw_interface_event')
 450             self.test.assert_equal(event.sw_if_index, self.sw_if_index,
 451                                    "sw_if_index")
 452             self.test.assert_equal(event.admin_up_down, admin_up_down,
 453                                    "admin state")
 454             self.test.assert_equal(event.link_up_down, link_up_down,
 455                                    "link state")
 456         dump = self.test.vapi.sw_interface_dump()
 457         if_state = self.get_interface_config_from_dump(dump)
 458         self.test.assert_equal(if_state.admin_up_down, admin_up_down,
 459                                "admin state")
 460         self.test.assert_equal(if_state.link_up_down, link_up_down,
 461                                "link state")
 462
 463     def __str__(self):
 464         return self.name