test/vpp_ip_route.py

   1 """
   2   IP Routes
   3
   4   object abstractions for representing IP routes in VPP
   5 """
   6
   7 from vpp_object import VppObject
   8 from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
   9 from vpp_ip import DpoProto, VppIpPrefix, INVALID_INDEX, VppIpAddressUnion, \
  10     VppIpMPrefix
  11 from ipaddress import ip_address, IPv4Network, IPv6Network
  12
  13 # from vnet/vnet/mpls/mpls_types.h
  14 MPLS_IETF_MAX_LABEL = 0xfffff
  15 MPLS_LABEL_INVALID = MPLS_IETF_MAX_LABEL + 1
  16
  17 try:
  18     text_type = unicode
  19 except NameError:
  20     text_type = str
  21
  22
  23 class MRouteItfFlags:
  24     MFIB_ITF_FLAG_NONE = 0
  25     MFIB_ITF_FLAG_NEGATE_SIGNAL = 1
  26     MFIB_ITF_FLAG_ACCEPT = 2
  27     MFIB_ITF_FLAG_FORWARD = 4
  28     MFIB_ITF_FLAG_SIGNAL_PRESENT = 8
  29     MFIB_ITF_FLAG_INTERNAL_COPY = 16
  30
  31
  32 class MRouteEntryFlags:
  33     MFIB_ENTRY_FLAG_NONE = 0
  34     MFIB_ENTRY_FLAG_SIGNAL = 1
  35     MFIB_ENTRY_FLAG_DROP = 2
  36     MFIB_ENTRY_FLAG_CONNECTED = 4
  37     MFIB_ENTRY_FLAG_INHERIT_ACCEPT = 8
  38
  39
  40 class FibPathProto:
  41     FIB_PATH_NH_PROTO_IP4 = 0
  42     FIB_PATH_NH_PROTO_IP6 = 1
  43     FIB_PATH_NH_PROTO_MPLS = 2
  44     FIB_PATH_NH_PROTO_ETHERNET = 3
  45     FIB_PATH_NH_PROTO_BIER = 4
  46     FIB_PATH_NH_PROTO_NSH = 5
  47
  48
  49 class FibPathType:
  50     FIB_PATH_TYPE_NORMAL = 0
  51     FIB_PATH_TYPE_LOCAL = 1
  52     FIB_PATH_TYPE_DROP = 2
  53     FIB_PATH_TYPE_UDP_ENCAP = 3
  54     FIB_PATH_TYPE_BIER_IMP = 4
  55     FIB_PATH_TYPE_ICMP_UNREACH = 5
  56     FIB_PATH_TYPE_ICMP_PROHIBIT = 6
  57     FIB_PATH_TYPE_SOURCE_LOOKUP = 7
  58     FIB_PATH_TYPE_DVR = 8
  59     FIB_PATH_TYPE_INTERFACE_RX = 9
  60     FIB_PATH_TYPE_CLASSIFY = 10
  61
  62
  63 class FibPathFlags:
  64     FIB_PATH_FLAG_NONE = 0
  65     FIB_PATH_FLAG_RESOLVE_VIA_ATTACHED = 1
  66     FIB_PATH_FLAG_RESOLVE_VIA_HOST = 2
  67
  68
  69 class MplsLspMode:
  70     PIPE = 0
  71     UNIFORM = 1
  72
  73
  74 def ip_to_dpo_proto(addr):
  75     if addr.version == 6:
  76         return DpoProto.DPO_PROTO_IP6
  77     else:
  78         return DpoProto.DPO_PROTO_IP4
  79
  80
  81 def address_proto(ip_addr):
  82     if ip_addr.ip_addr.version is 4:
  83         return FibPathProto.FIB_PATH_NH_PROTO_IP4
  84     else:
  85         return FibPathProto.FIB_PATH_NH_PROTO_IP6
  86
  87
  88 def find_route(test, addr, len, table_id=0):
  89     ip_addr = ip_address(text_type(addr))
  90
  91     if 4 is ip_addr.version:
  92         routes = test.vapi.ip_route_dump(table_id, False)
  93         prefix = IPv4Network("%s/%d" % (text_type(addr), len), strict=False)
  94     else:
  95         routes = test.vapi.ip_route_dump(table_id, True)
  96         prefix = IPv6Network("%s/%d" % (text_type(addr), len), strict=False)
  97
  98     for e in routes:
  99         if table_id == e.route.table_id \
 100            and prefix == e.route.prefix:
 101             return True
 102     return False
 103
 104
 105 def find_mroute(test, grp_addr, src_addr, grp_addr_len,
 106                 table_id=0):
 107     ip_mprefix = VppIpMPrefix(text_type(src_addr),
 108                               text_type(grp_addr),
 109                               grp_addr_len)
 110
 111     if 4 is ip_mprefix.version:
 112         routes = test.vapi.ip_mroute_dump(table_id, False)
 113     else:
 114         routes = test.vapi.ip_mroute_dump(table_id, True)
 115
 116     for e in routes:
 117         if table_id == e.route.table_id and ip_mprefix == e.route.prefix:
 118             return True
 119     return False
 120
 121
 122 def find_mpls_route(test, table_id, label, eos_bit, paths=None):
 123     dump = test.vapi.mpls_route_dump(table_id)
 124     for e in dump:
 125         if label == e.mr_route.mr_label \
 126            and eos_bit == e.mr_route.mr_eos \
 127            and table_id == e.mr_route.mr_table_id:
 128             if not paths:
 129                 return True
 130             else:
 131                 if (len(paths) != len(e.mr_route.mr_paths)):
 132                     return False
 133                 for i in range(len(paths)):
 134                     if (paths[i] != e.mr_route.mr_paths[i]):
 135                         return False
 136                 return True
 137     return False
 138
 139
 140 def fib_interface_ip_prefix(test, address, length, sw_if_index):
 141     ip_addr = ip_address(text_type(address))
 142
 143     if 4 is ip_addr.version:
 144         addrs = test.vapi.ip_address_dump(sw_if_index)
 145         prefix = IPv4Network("%s/%d" % (text_type(address), length),
 146                              strict=False)
 147     else:
 148         addrs = test.vapi.ip_address_dump(sw_if_index, is_ipv6=1)
 149         prefix = IPv6Network("%s/%d" % (text_type(address), length),
 150                              strict=False)
 151
 152     for a in addrs:
 153         if a.sw_if_index == sw_if_index and \
 154            a.prefix == prefix:
 155             return True
 156     return False
 157
 158
 159 class VppIpTable(VppObject):
 160
 161     def __init__(self,
 162                  test,
 163                  table_id,
 164                  is_ip6=0):
 165         self._test = test
 166         self.table_id = table_id
 167         self.is_ip6 = is_ip6
 168
 169     def add_vpp_config(self):
 170         self._test.vapi.ip_table_add_del(is_ipv6=self.is_ip6, is_add=1,
 171                                          table_id=self.table_id)
 172         self._test.registry.register(self, self._test.logger)
 173
 174     def remove_vpp_config(self):
 175         self._test.vapi.ip_table_add_del(is_ipv6=self.is_ip6, is_add=0,
 176                                          table_id=self.table_id)
 177
 178     def query_vpp_config(self):
 179         if self.table_id == 0:
 180             # the default table always exists
 181             return False
 182         # find the default route
 183         return find_route(self._test,
 184                           "::" if self.is_ip6 else "0.0.0.0",
 185                           0,
 186                           self.table_id)
 187
 188     def object_id(self):
 189         return ("table-%s-%d" %
 190                 ("v6" if self.is_ip6 == 1 else "v4",
 191                  self.table_id))
 192
 193
 194 class VppIpInterfaceAddress(VppObject):
 195
 196     def __init__(self, test, intf, addr, len):
 197         self._test = test
 198         self.intf = intf
 199         self.prefix = VppIpPrefix(addr, len)
 200
 201     def add_vpp_config(self):
 202         self._test.vapi.sw_interface_add_del_address(
 203             sw_if_index=self.intf.sw_if_index, address=self.prefix.bytes,
 204             address_length=self.prefix.length, is_ipv6=self.prefix.is_ip6,
 205             is_add=1)
 206         self._test.registry.register(self, self._test.logger)
 207
 208     def remove_vpp_config(self):
 209         self._test.vapi.sw_interface_add_del_address(
 210             sw_if_index=self.intf.sw_if_index, address=self.prefix.bytes,
 211             address_length=self.prefix.length, is_ipv6=self.prefix.is_ip6,
 212             is_add=0)
 213
 214     def query_vpp_config(self):
 215         return fib_interface_ip_prefix(self._test,
 216                                        self.prefix.address,
 217                                        self.prefix.length,
 218                                        self.intf.sw_if_index)
 219
 220     def object_id(self):
 221         return "interface-ip-%s-%s" % (self.intf, self.prefix)
 222
 223
 224 class VppIpInterfaceBind(VppObject):
 225
 226     def __init__(self, test, intf, table):
 227         self._test = test
 228         self.intf = intf
 229         self.table = table
 230
 231     def add_vpp_config(self):
 232         if self.table.is_ip6:
 233             self.intf.set_table_ip6(self.table.table_id)
 234         else:
 235             self.intf.set_table_ip4(self.table.table_id)
 236         self._test.registry.register(self, self._test.logger)
 237
 238     def remove_vpp_config(self):
 239         if 0 == self.table.table_id:
 240             return
 241         if self.table.is_ip6:
 242             self.intf.set_table_ip6(0)
 243         else:
 244             self.intf.set_table_ip4(0)
 245
 246     def query_vpp_config(self):
 247         if 0 == self.table.table_id:
 248             return False
 249         return self._test.vapi.sw_interface_get_table(
 250             self.intf.sw_if_index,
 251             self.table.is_ip6).vrf_id == self.table.table_id
 252
 253     def object_id(self):
 254         return "interface-bind-%s-%s" % (self.intf, self.table)
 255
 256
 257 class VppMplsLabel(object):
 258     def __init__(self, value, mode=MplsLspMode.PIPE, ttl=64, exp=0):
 259         self.value = value
 260         self.mode = mode
 261         self.ttl = ttl
 262         self.exp = exp
 263
 264     def encode(self):
 265         is_uniform = 0 if self.mode is MplsLspMode.PIPE else 1
 266         return {'label': self.value,
 267                 'ttl': self.ttl,
 268                 'exp': self.exp,
 269                 'is_uniform': is_uniform}
 270
 271     def __eq__(self, other):
 272         if isinstance(other, self.__class__):
 273             return (self.value == other.value and
 274                     self.ttl == other.ttl and
 275                     self.exp == other.exp and
 276                     self.mode == other.mode)
 277         elif hasattr(other, 'label'):
 278             return (self.value == other.label and
 279                     self.ttl == other.ttl and
 280                     self.exp == other.exp and
 281                     (self.mode == MplsLspMode.UNIFORM) == other.is_uniform)
 282         else:
 283             return False
 284
 285     def __ne__(self, other):
 286         return not (self == other)
 287
 288
 289 class VppFibPathNextHop(object):
 290     def __init__(self, addr,
 291                  via_label=MPLS_LABEL_INVALID,
 292                  next_hop_id=INVALID_INDEX):
 293         self.addr = VppIpAddressUnion(addr)
 294         self.via_label = via_label
 295         self.obj_id = next_hop_id
 296
 297     def encode(self):
 298         if self.via_label is not MPLS_LABEL_INVALID:
 299             return {'via_label': self.via_label}
 300         if self.obj_id is not INVALID_INDEX:
 301             return {'obj_id': self.obj_id}
 302         else:
 303             return {'address': self.addr.encode()}
 304
 305     def proto(self):
 306         if self.via_label is MPLS_LABEL_INVALID:
 307             return address_proto(self.addr)
 308         else:
 309             return FibPathProto.FIB_PATH_NH_PROTO_MPLS
 310
 311     def __eq__(self, other):
 312         if not isinstance(other, self.__class__):
 313             # try the other instance's __eq__.
 314             return NotImplemented
 315         return (self.addr == other.addr and
 316                 self.via_label == other.via_label and
 317                 self.obj_id == other.obj_id)
 318
 319
 320 class VppRoutePath(object):
 321
 322     def __init__(
 323             self,
 324             nh_addr,
 325             nh_sw_if_index,
 326             nh_table_id=0,
 327             labels=[],
 328             nh_via_label=MPLS_LABEL_INVALID,
 329             rpf_id=0,
 330             next_hop_id=INVALID_INDEX,
 331             proto=None,
 332             flags=FibPathFlags.FIB_PATH_FLAG_NONE,
 333             type=FibPathType.FIB_PATH_TYPE_NORMAL):
 334         self.nh_itf = nh_sw_if_index
 335         self.nh_table_id = nh_table_id
 336         self.nh_labels = labels
 337         self.weight = 1
 338         self.rpf_id = rpf_id
 339         self.proto = proto
 340         self.flags = flags
 341         self.type = type
 342         self.nh = VppFibPathNextHop(nh_addr, nh_via_label, next_hop_id)
 343         if proto is None:
 344             self.proto = self.nh.proto()
 345         else:
 346             self.proto = proto
 347         self.next_hop_id = next_hop_id
 348
 349     def encode_labels(self):
 350         lstack = []
 351         for l in self.nh_labels:
 352             if type(l) == VppMplsLabel:
 353                 lstack.append(l.encode())
 354             else:
 355                 lstack.append({'label': l,
 356                                'ttl': 255})
 357         while (len(lstack) < 16):
 358             lstack.append({})
 359
 360         return lstack
 361
 362     def encode(self):
 363         return {'weight': 1,
 364                 'preference': 0,
 365                 'table_id': self.nh_table_id,
 366                 'nh': self.nh.encode(),
 367                 'next_hop_id': self.next_hop_id,
 368                 'sw_if_index': self.nh_itf,
 369                 'rpf_id': self.rpf_id,
 370                 'proto': self.proto,
 371                 'type': self.type,
 372                 'flags': self.flags,
 373                 'n_labels': len(self.nh_labels),
 374                 'label_stack': self.encode_labels()}
 375
 376     def __eq__(self, other):
 377         if isinstance(other, self.__class__):
 378             return self.nh == other.nh
 379         elif hasattr(other, 'sw_if_index'):
 380             # vl_api_fib_path_t
 381             if (len(self.nh_labels) != other.n_labels):
 382                 return False
 383             for i in range(len(self.nh_labels)):
 384                 if (self.nh_labels[i] != other.label_stack[i]):
 385                     return False
 386             return self.nh_itf == other.sw_if_index
 387         else:
 388             return False
 389
 390     def __ne__(self, other):
 391         return not (self == other)
 392
 393
 394 class VppMRoutePath(VppRoutePath):
 395
 396     def __init__(self, nh_sw_if_index, flags,
 397                  nh=None,
 398                  proto=FibPathProto.FIB_PATH_NH_PROTO_IP4,
 399                  type=FibPathType.FIB_PATH_TYPE_NORMAL,
 400                  bier_imp=INVALID_INDEX):
 401         if not nh:
 402             nh = "::" if proto is FibPathProto.FIB_PATH_NH_PROTO_IP6 \
 403                  else "0.0.0.0"
 404         super(VppMRoutePath, self).__init__(nh,
 405                                             nh_sw_if_index,
 406                                             proto=proto,
 407                                             type=type,
 408                                             next_hop_id=bier_imp)
 409         self.nh_i_flags = flags
 410         self.bier_imp = bier_imp
 411
 412     def encode(self):
 413         return {'path': super(VppMRoutePath, self).encode(),
 414                 'itf_flags': self.nh_i_flags}
 415
 416
 417 class VppIpRoute(VppObject):
 418     """
 419     IP Route
 420     """
 421
 422     def __init__(self, test, dest_addr,
 423                  dest_addr_len, paths, table_id=0, register=True):
 424         self._test = test
 425         self.paths = paths
 426         self.table_id = table_id
 427         self.prefix = VppIpPrefix(dest_addr, dest_addr_len)
 428         self.register = register
 429
 430         self.encoded_paths = []
 431         for path in self.paths:
 432             self.encoded_paths.append(path.encode())
 433
 434     def __eq__(self, other):
 435         if self.table_id == other.table_id and \
 436            self.prefix == other.prefix:
 437             return True
 438         return False
 439
 440     def modify(self, paths):
 441         self.paths = paths
 442         self.encoded_paths = []
 443         for path in self.paths:
 444             self.encoded_paths.append(path.encode())
 445
 446         self._test.vapi.ip_route_add_del(route={'table_id': self.table_id,
 447                                                 'prefix': self.prefix.encode(),
 448                                                 'n_paths': len(
 449                                                     self.encoded_paths),
 450                                                 'paths': self.encoded_paths,
 451                                                 },
 452                                          is_add=1,
 453                                          is_multipath=0)
 454
 455     def add_vpp_config(self):
 456         r = self._test.vapi.ip_route_add_del(
 457             route={'table_id': self.table_id,
 458                    'prefix': self.prefix.encode(),
 459                    'n_paths': len(self.encoded_paths),
 460                    'paths': self.encoded_paths,
 461                    },
 462             is_add=1,
 463             is_multipath=0)
 464         self.stats_index = r.stats_index
 465         if self.register:
 466             self._test.registry.register(self, self._test.logger)
 467
 468     def remove_vpp_config(self):
 469         self._test.vapi.ip_route_add_del(route={'table_id': self.table_id,
 470                                                 'prefix': self.prefix.encode(),
 471                                                 'n_paths': len(
 472                                                     self.encoded_paths),
 473                                                 'paths': self.encoded_paths,
 474                                                 },
 475                                          is_add=0,
 476                                          is_multipath=0)
 477
 478     def query_vpp_config(self):
 479         return find_route(self._test,
 480                           self.prefix.address,
 481                           self.prefix.len,
 482                           self.table_id)
 483
 484     def object_id(self):
 485         return ("%d:%s/%d"
 486                 % (self.table_id,
 487                    self.prefix.address,
 488                    self.prefix.len))
 489
 490     def get_stats_to(self):
 491         c = self._test.statistics.get_counter("/net/route/to")
 492         return c[0][self.stats_index]
 493
 494     def get_stats_via(self):
 495         c = self._test.statistics.get_counter("/net/route/via")
 496         return c[0][self.stats_index]
 497
 498
 499 class VppIpMRoute(VppObject):
 500     """
 501     IP Multicast Route
 502     """
 503
 504     def __init__(self, test, src_addr, grp_addr,
 505                  grp_addr_len, e_flags, paths, table_id=0,
 506                  rpf_id=0):
 507         self._test = test
 508         self.paths = paths
 509         self.table_id = table_id
 510         self.e_flags = e_flags
 511         self.rpf_id = rpf_id
 512
 513         self.prefix = VppIpMPrefix(src_addr, grp_addr, grp_addr_len)
 514         self.encoded_paths = []
 515         for path in self.paths:
 516             self.encoded_paths.append(path.encode())
 517
 518     def add_vpp_config(self):
 519         r = self._test.vapi.ip_mroute_add_del(self.table_id,
 520                                               self.prefix.encode(),
 521                                               self.e_flags,
 522                                               self.rpf_id,
 523                                               self.encoded_paths,
 524                                               is_add=1)
 525         self.stats_index = r.stats_index
 526         self._test.registry.register(self, self._test.logger)
 527
 528     def remove_vpp_config(self):
 529         self._test.vapi.ip_mroute_add_del(self.table_id,
 530                                           self.prefix.encode(),
 531                                           self.e_flags,
 532                                           self.rpf_id,
 533                                           self.encoded_paths,
 534                                           is_add=0)
 535
 536     def update_entry_flags(self, flags):
 537         self.e_flags = flags
 538         self._test.vapi.ip_mroute_add_del(self.table_id,
 539                                           self.prefix.encode(),
 540                                           self.e_flags,
 541                                           self.rpf_id,
 542                                           [],
 543                                           is_add=1)
 544
 545     def update_rpf_id(self, rpf_id):
 546         self.rpf_id = rpf_id
 547         self._test.vapi.ip_mroute_add_del(self.table_id,
 548                                           self.prefix.encode(),
 549                                           self.e_flags,
 550                                           self.rpf_id,
 551                                           [],
 552                                           is_add=1)
 553
 554     def update_path_flags(self, itf, flags):
 555         for p in range(len(self.paths)):
 556             if self.paths[p].nh_itf == itf:
 557                 self.paths[p].nh_i_flags = flags
 558             self.encoded_paths[p] = self.paths[p].encode()
 559             break
 560
 561         self._test.vapi.ip_mroute_add_del(self.table_id,
 562                                           self.prefix.encode(),
 563                                           self.e_flags,
 564                                           self.rpf_id,
 565                                           [self.encoded_paths[p]],
 566                                           is_add=1,
 567                                           is_multipath=0)
 568
 569     def query_vpp_config(self):
 570         return find_mroute(self._test,
 571                            self.prefix.gaddr,
 572                            self.prefix.saddr,
 573                            self.prefix.length,
 574                            self.table_id)
 575
 576     def object_id(self):
 577         return ("%d:(%s,%s/%d)" % (self.table_id,
 578                                    self.prefix.saddr,
 579                                    self.prefix.gaddr,
 580                                    self.prefix.length))
 581
 582     def get_stats(self):
 583         c = self._test.statistics.get_counter("/net/mroute")
 584         return c[0][self.stats_index]
 585
 586
 587 class VppMFibSignal(object):
 588     def __init__(self, test, route, interface, packet):
 589         self.route = route
 590         self.interface = interface
 591         self.packet = packet
 592         self.test = test
 593
 594     def compare(self, signal):
 595         self.test.assertEqual(self.interface, signal.sw_if_index)
 596         self.test.assertEqual(self.route.table_id, signal.table_id)
 597         self.test.assertEqual(self.route.prefix, signal.prefix)
 598
 599
 600 class VppMplsIpBind(VppObject):
 601     """
 602     MPLS to IP Binding
 603     """
 604
 605     def __init__(self, test, local_label, dest_addr, dest_addr_len,
 606                  table_id=0, ip_table_id=0, is_ip6=0):
 607         self._test = test
 608         self.dest_addr_len = dest_addr_len
 609         self.dest_addr = dest_addr
 610         self.ip_addr = ip_address(text_type(dest_addr))
 611         self.local_label = local_label
 612         self.table_id = table_id
 613         self.ip_table_id = ip_table_id
 614         self.prefix = VppIpPrefix(dest_addr, dest_addr_len)
 615
 616     def add_vpp_config(self):
 617         self._test.vapi.mpls_ip_bind_unbind(self.local_label,
 618                                             self.prefix.encode(),
 619                                             table_id=self.table_id,
 620                                             ip_table_id=self.ip_table_id)
 621         self._test.registry.register(self, self._test.logger)
 622
 623     def remove_vpp_config(self):
 624         self._test.vapi.mpls_ip_bind_unbind(self.local_label,
 625                                             self.prefix.encode(),
 626                                             table_id=self.table_id,
 627                                             ip_table_id=self.ip_table_id,
 628                                             is_bind=0)
 629
 630     def query_vpp_config(self):
 631         dump = self._test.vapi.mpls_route_dump(self.table_id)
 632         for e in dump:
 633             if self.local_label == e.mr_route.mr_label \
 634                and self.table_id == e.mr_route.mr_table_id:
 635                 return True
 636         return False
 637
 638     def object_id(self):
 639         return ("%d:%s binds %d:%s/%d"
 640                 % (self.table_id,
 641                    self.local_label,
 642                    self.ip_table_id,
 643                    self.dest_addr,
 644                    self.dest_addr_len))
 645
 646
 647 class VppMplsTable(VppObject):
 648
 649     def __init__(self,
 650                  test,
 651                  table_id):
 652         self._test = test
 653         self.table_id = table_id
 654
 655     def add_vpp_config(self):
 656         self._test.vapi.mpls_table_add_del(
 657             self.table_id,
 658             is_add=1)
 659         self._test.registry.register(self, self._test.logger)
 660
 661     def remove_vpp_config(self):
 662         self._test.vapi.mpls_table_add_del(
 663             self.table_id,
 664             is_add=0)
 665
 666     def query_vpp_config(self):
 667         dump = self._test.vapi.mpls_table_dump()
 668         for d in dump:
 669             if d.mt_table.mt_table_id == self.table_id:
 670                 return True
 671         return False
 672
 673     def object_id(self):
 674         return ("table-mpls-%d" % (self.table_id))
 675
 676
 677 class VppMplsRoute(VppObject):
 678     """
 679     MPLS Route/LSP
 680     """
 681
 682     def __init__(self, test, local_label, eos_bit, paths, table_id=0,
 683                  is_multicast=0,
 684                  eos_proto=FibPathProto.FIB_PATH_NH_PROTO_IP4):
 685         self._test = test
 686         self.paths = paths
 687         self.local_label = local_label
 688         self.eos_bit = eos_bit
 689         self.eos_proto = eos_proto
 690         self.table_id = table_id
 691         self.is_multicast = is_multicast
 692
 693     def add_vpp_config(self):
 694         paths = []
 695         for path in self.paths:
 696             paths.append(path.encode())
 697
 698         r = self._test.vapi.mpls_route_add_del(self.table_id,
 699                                                self.local_label,
 700                                                self.eos_bit,
 701                                                self.eos_proto,
 702                                                self.is_multicast,
 703                                                paths, 1, 0)
 704         self.stats_index = r.stats_index
 705         self._test.registry.register(self, self._test.logger)
 706
 707     def remove_vpp_config(self):
 708         paths = []
 709         for path in self.paths:
 710             paths.append(path.encode())
 711
 712         self._test.vapi.mpls_route_add_del(self.table_id,
 713                                            self.local_label,
 714                                            self.eos_bit,
 715                                            self.eos_proto,
 716                                            self.is_multicast,
 717                                            paths, 0, 0)
 718
 719     def query_vpp_config(self):
 720         return find_mpls_route(self._test, self.table_id,
 721                                self.local_label, self.eos_bit)
 722
 723     def object_id(self):
 724         return ("%d:%s/%d"
 725                 % (self.table_id,
 726                    self.local_label,
 727                    20 + self.eos_bit))
 728
 729     def get_stats_to(self):
 730         c = self._test.statistics.get_counter("/net/route/to")
 731         return c[0][self.stats_index]
 732
 733     def get_stats_via(self):
 734         c = self._test.statistics.get_counter("/net/route/via")
 735         return c[0][self.stats_index]