""" IP Routes object abstractions for representing IP routes in VPP """ from vpp_object import VppObject from socket import inet_pton, inet_ntop, AF_INET, AF_INET6 from vpp_ip import DpoProto, VppIpPrefix # from vnet/vnet/mpls/mpls_types.h MPLS_IETF_MAX_LABEL = 0xfffff MPLS_LABEL_INVALID = MPLS_IETF_MAX_LABEL + 1 class MRouteItfFlags: MFIB_ITF_FLAG_NONE = 0 MFIB_ITF_FLAG_NEGATE_SIGNAL = 1 MFIB_ITF_FLAG_ACCEPT = 2 MFIB_ITF_FLAG_FORWARD = 4 MFIB_ITF_FLAG_SIGNAL_PRESENT = 8 MFIB_ITF_FLAG_INTERNAL_COPY = 16 class MRouteEntryFlags: MFIB_ENTRY_FLAG_NONE = 0 MFIB_ENTRY_FLAG_SIGNAL = 1 MFIB_ENTRY_FLAG_DROP = 2 MFIB_ENTRY_FLAG_CONNECTED = 4 MFIB_ENTRY_FLAG_INHERIT_ACCEPT = 8 class MplsLspMode: PIPE = 0 UNIFORM = 1 def ip_to_dpo_proto(addr): if addr.version == 6: return DpoProto.DPO_PROTO_IP6 else: return DpoProto.DPO_PROTO_IP4 def find_route(test, ip_addr, len, table_id=0, inet=AF_INET): if inet == AF_INET: s = 4 routes = test.vapi.ip_fib_dump() else: s = 16 routes = test.vapi.ip6_fib_dump() route_addr = inet_pton(inet, ip_addr) for e in routes: if route_addr == e.address[:s] \ and len == e.address_length \ and table_id == e.table_id: return True return False def find_mroute(test, grp_addr, src_addr, grp_addr_len, table_id=0, inet=AF_INET): if inet == AF_INET: s = 4 routes = test.vapi.ip_mfib_dump() else: s = 16 routes = test.vapi.ip6_mfib_dump() gaddr = inet_pton(inet, grp_addr) saddr = inet_pton(inet, src_addr) for e in routes: if gaddr == e.grp_address[:s] \ and grp_addr_len == e.address_length \ and saddr == e.src_address[:s] \ and table_id == e.table_id: return True return False def find_mpls_route(test, table_id, label, eos_bit, paths=None): dump = test.vapi.mpls_fib_dump() for e in dump: if label == e.label \ and eos_bit == e.eos_bit \ and table_id == e.table_id: if not paths: return True else: if (len(paths) != len(e.path)): return False for i in range(len(paths)): if (paths[i] != e.path[i]): return False return True return False def fib_interface_ip_prefix(test, address, length, sw_if_index): vp = VppIpPrefix(address, length) addrs = test.vapi.ip_address_dump(sw_if_index, is_ipv6=vp.is_ip6) if vp.is_ip6: n = 16 else: n = 4 for a in addrs: if a.prefix_length == length and \ a.sw_if_index == sw_if_index and \ a.ip[:n] == vp.bytes: return True return False class VppIpTable(VppObject): def __init__(self, test, table_id, is_ip6=0): self._test = test self.table_id = table_id self.is_ip6 = is_ip6 def add_vpp_config(self): self._test.vapi.ip_table_add_del(is_ipv6=self.is_ip6, is_add=1, table_id=self.table_id) self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): self._test.vapi.ip_table_add_del(is_ipv6=self.is_ip6, is_add=0, table_id=self.table_id) def query_vpp_config(self): if self.table_id == 0: # the default table always exists return False # find the default route return find_route(self._test, "::" if self.is_ip6 else "0.0.0.0", 0, self.table_id, inet=AF_INET6 if self.is_ip6 == 1 else AF_INET) def object_id(self): return ("table-%s-%d" % ("v6" if self.is_ip6 == 1 else "v4", self.table_id)) class VppIpInterfaceAddress(VppObject): def __init__(self, test, intf, addr, len): self._test = test self.intf = intf self.prefix = VppIpPrefix(addr, len) def add_vpp_config(self): self._test.vapi.sw_interface_add_del_address( sw_if_index=self.intf.sw_if_index, address=self.prefix.bytes, address_length=self.prefix.length, is_ipv6=self.prefix.is_ip6, is_add=1) self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): self._test.vapi.sw_interface_add_del_address( sw_if_index=self.intf.sw_if_index, address=self.prefix.bytes, address_length=self.prefix.length, is_ipv6=self.prefix.is_ip6, is_add=0) def query_vpp_config(self): return fib_interface_ip_prefix(self._test, self.prefix.address, self.prefix.length, self.intf.sw_if_index) def object_id(self): return "interface-ip-%s-%s" % (self.intf, self.prefix) class VppIpInterfaceBind(VppObject): def __init__(self, test, intf, table): self._test = test self.intf = intf self.table = table def add_vpp_config(self): if self.table.is_ip6: self.intf.set_table_ip6(self.table.table_id) else: self.intf.set_table_ip4(self.table.table_id) self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): if 0 == self.table.table_id: return if self.table.is_ip6: self.intf.set_table_ip6(0) else: self.intf.set_table_ip4(0) def query_vpp_config(self): if 0 == self.table.table_id: return False return self._test.vapi.sw_interface_get_table( self.intf.sw_if_index, self.table.is_ip6).vrf_id == self.table.table_id def object_id(self): return "interface-bind-%s-%s" % (self.intf, self.table) class VppMplsLabel(object): def __init__(self, value, mode=MplsLspMode.PIPE, ttl=64, exp=0): self.value = value self.mode = mode self.ttl = ttl self.exp = exp def encode(self): is_uniform = 0 if self.mode is MplsLspMode.PIPE else 1 return {'label': self.value, 'ttl': self.ttl, 'exp': self.exp, 'is_uniform': is_uniform} def __eq__(self, other): if isinstance(other, self.__class__): return (self.value == other.value and self.ttl == other.ttl and self.exp == other.exp and self.mode == other.mode) elif hasattr(other, 'label'): return (self.value == other.label and self.ttl == other.ttl and self.exp == other.exp and (self.mode == MplsLspMode.UNIFORM) == other.is_uniform) else: return False def __ne__(self, other): return not (self == other) class VppRoutePath(object): def __init__( self, nh_addr, nh_sw_if_index, nh_table_id=0, labels=[], nh_via_label=MPLS_LABEL_INVALID, rpf_id=0, is_interface_rx=0, is_resolve_host=0, is_resolve_attached=0, is_source_lookup=0, is_udp_encap=0, is_dvr=0, next_hop_id=0xffffffff, proto=DpoProto.DPO_PROTO_IP4): self.proto = proto self.nh_itf = nh_sw_if_index self.nh_table_id = nh_table_id self.nh_via_label = nh_via_label self.nh_labels = labels self.weight = 1 self.rpf_id = rpf_id if self.proto is DpoProto.DPO_PROTO_IP6: self.nh_addr = inet_pton(AF_INET6, nh_addr) elif self.proto is DpoProto.DPO_PROTO_IP4: self.nh_addr = inet_pton(AF_INET, nh_addr) else: self.nh_addr = inet_pton(AF_INET6, "::") self.is_resolve_host = is_resolve_host self.is_resolve_attached = is_resolve_attached self.is_interface_rx = is_interface_rx self.is_source_lookup = is_source_lookup self.is_rpf_id = 0 if rpf_id != 0: self.is_rpf_id = 1 self.nh_itf = rpf_id self.is_udp_encap = is_udp_encap self.next_hop_id = next_hop_id self.is_dvr = is_dvr def encode_labels(self): lstack = [] for l in self.nh_labels: if type(l) == VppMplsLabel: lstack.append(l.encode()) else: lstack.append({'label': l, 'ttl': 255}) return lstack def encode(self): return {'next_hop': self.nh_addr, 'weight': 1, 'preference': 0, 'table_id': self.nh_table_id, 'next_hop_id': self.next_hop_id, 'sw_if_index': self.nh_itf, 'afi': self.proto, 'is_udp_encap': self.is_udp_encap, 'n_labels': len(self.nh_labels), 'label_stack': self.encode_labels()} def __eq__(self, other): if isinstance(other, self.__class__): return self.nh_addr == other.nh_addr elif hasattr(other, 'sw_if_index'): # vl_api_fib_path_t if (len(self.nh_labels) != other.n_labels): return False for i in range(len(self.nh_labels)): if (self.nh_labels[i] != other.label_stack[i]): return False return self.nh_itf == other.sw_if_index else: return False def __ne__(self, other): return not (self == other) class VppMRoutePath(VppRoutePath): def __init__(self, nh_sw_if_index, flags, nh=None, proto=DpoProto.DPO_PROTO_IP4, bier_imp=0): if not nh: nh = "::" if proto is DpoProto.DPO_PROTO_IP6 else "0.0.0.0" super(VppMRoutePath, self).__init__(nh, nh_sw_if_index, proto=proto) self.nh_i_flags = flags self.bier_imp = bier_imp class VppIpRoute(VppObject): """ IP Route """ def __init__(self, test, dest_addr, dest_addr_len, paths, table_id=0, is_ip6=0, is_local=0, is_unreach=0, is_prohibit=0, is_drop=0): self._test = test self.paths = paths self.dest_addr_len = dest_addr_len self.table_id = table_id self.is_ip6 = is_ip6 self.is_local = is_local self.is_unreach = is_unreach self.is_prohibit = is_prohibit self.is_drop = is_drop self.dest_addr_p = dest_addr if is_ip6: self.dest_addr = inet_pton(AF_INET6, dest_addr) else: self.dest_addr = inet_pton(AF_INET, dest_addr) def modify(self, paths, is_local=0, is_unreach=0, is_prohibit=0): self.paths = paths self.is_local = is_local self.is_unreach = is_unreach self.is_prohibit = is_prohibit def add_vpp_config(self): if self.is_unreach or self.is_prohibit or self.is_drop: r = self._test.vapi.ip_add_del_route( dst_address=self.dest_addr, dst_address_length=self.dest_addr_len, next_hop_address=inet_pton( AF_INET6, "::"), next_hop_sw_if_index=0xffffffff, table_id=self.table_id, is_drop=self.is_drop, is_unreach=self.is_unreach, is_prohibit=self.is_prohibit, is_ipv6=self.is_ip6, is_local=self.is_local) else: for path in self.paths: lstack = path.encode_labels() nh_proto = 0 # cross AF next-hop if self.is_ip6 and path.proto == DpoProto.DPO_PROTO_IP4: nh_proto = 1 elif not self.is_ip6 and path.proto == DpoProto.DPO_PROTO_IP6: nh_proto = 2 r = self._test.vapi.ip_add_del_route( dst_address=self.dest_addr, dst_address_length=self.dest_addr_len, next_hop_address=path.nh_addr, next_hop_sw_if_index=path.nh_itf, table_id=self.table_id, next_hop_table_id=path.nh_table_id, next_hop_n_out_labels=len(lstack), next_hop_out_label_stack=lstack, next_hop_via_label=path.nh_via_label, next_hop_id=path.next_hop_id, next_hop_proto=nh_proto, is_resolve_host=path.is_resolve_host, is_resolve_attached=path.is_resolve_attached, is_ipv6=self.is_ip6, is_local=self.is_local, is_multipath=1 if len(self.paths) > 1 else 0, is_dvr=path.is_dvr, is_udp_encap=path.is_udp_encap, is_source_lookup=path.is_source_lookup) self.stats_index = r.stats_index self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): if self.is_unreach or self.is_prohibit or self.is_drop: self._test.vapi.ip_add_del_route( dst_address=self.dest_addr, dst_address_length=self.dest_addr_len, next_hop_address=inet_pton( AF_INET6, "::"), next_hop_sw_if_index=0xffffffff, table_id=self.table_id, is_add=0, is_unreach=self.is_unreach, is_prohibit=self.is_prohibit, is_ipv6=self.is_ip6, is_local=self.is_local) else: for path in self.paths: self._test.vapi.ip_add_del_route( dst_address=self.dest_addr, dst_address_length=self.dest_addr_len, next_hop_address=path.nh_addr, next_hop_sw_if_index=path.nh_itf, table_id=self.table_id, next_hop_table_id=path.nh_table_id, next_hop_via_label=path.nh_via_label, next_hop_id=path.next_hop_id, is_add=0, is_ipv6=self.is_ip6, is_dvr=path.is_dvr, is_udp_encap=path.is_udp_encap) def query_vpp_config(self): return find_route(self._test, self.dest_addr_p, self.dest_addr_len, self.table_id, inet=AF_INET6 if self.is_ip6 == 1 else AF_INET) def object_id(self): return ("%d:%s/%d" % (self.table_id, self.dest_addr_p, self.dest_addr_len)) def get_stats_to(self): c = self._test.statistics.get_counter("/net/route/to") return c[0][self.stats_index] def get_stats_via(self): c = self._test.statistics.get_counter("/net/route/via") return c[0][self.stats_index] class VppIpMRoute(VppObject): """ IP Multicast Route """ def __init__(self, test, src_addr, grp_addr, grp_addr_len, e_flags, paths, table_id=0, rpf_id=0, is_ip6=0): self._test = test self.paths = paths self.grp_addr_len = grp_addr_len self.table_id = table_id self.e_flags = e_flags self.is_ip6 = is_ip6 self.rpf_id = rpf_id self.grp_addr_p = grp_addr self.src_addr_p = src_addr if is_ip6: self.grp_addr = inet_pton(AF_INET6, grp_addr) self.src_addr = inet_pton(AF_INET6, src_addr) else: self.grp_addr = inet_pton(AF_INET, grp_addr) self.src_addr = inet_pton(AF_INET, src_addr) def add_vpp_config(self): for path in self.paths: r = self._test.vapi.ip_mroute_add_del(self.src_addr, self.grp_addr, self.grp_addr_len, self.e_flags, path.proto, path.nh_itf, path.nh_addr, path.nh_i_flags, bier_imp=path.bier_imp, rpf_id=self.rpf_id, table_id=self.table_id, is_ipv6=self.is_ip6) self.stats_index = r.stats_index self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): for path in self.paths: self._test.vapi.ip_mroute_add_del(self.src_addr, self.grp_addr, self.grp_addr_len, self.e_flags, path.proto, path.nh_itf, path.nh_addr, path.nh_i_flags, table_id=self.table_id, bier_imp=path.bier_imp, is_add=0, is_ipv6=self.is_ip6) def update_entry_flags(self, flags): self.e_flags = flags self._test.vapi.ip_mroute_add_del(self.src_addr, self.grp_addr, self.grp_addr_len, self.e_flags, 0, 0xffffffff, "", 0, table_id=self.table_id, is_ipv6=self.is_ip6) def update_rpf_id(self, rpf_id): self.rpf_id = rpf_id self._test.vapi.ip_mroute_add_del(self.src_addr, self.grp_addr, self.grp_addr_len, self.e_flags, 0, 0xffffffff, "", 0, rpf_id=self.rpf_id, table_id=self.table_id, is_ipv6=self.is_ip6) def update_path_flags(self, itf, flags): for path in self.paths: if path.nh_itf == itf: path.nh_i_flags = flags break self._test.vapi.ip_mroute_add_del(self.src_addr, self.grp_addr, self.grp_addr_len, self.e_flags, path.proto, path.nh_itf, path.nh_addr, path.nh_i_flags, table_id=self.table_id, is_ipv6=self.is_ip6) def query_vpp_config(self): return find_mroute(self._test, self.grp_addr_p, self.src_addr_p, self.grp_addr_len, self.table_id, inet=AF_INET6 if self.is_ip6 == 1 else AF_INET) def object_id(self): if self.is_ip6: return ("%d:(%s,%s/%d)" % (self.table_id, inet_ntop(AF_INET6, self.src_addr), inet_ntop(AF_INET6, self.grp_addr), self.grp_addr_len)) else: return ("%d:(%s,%s/%d)" % (self.table_id, inet_ntop(AF_INET, self.src_addr), inet_ntop(AF_INET, self.grp_addr), self.grp_addr_len)) def get_stats(self): c = self._test.statistics.get_counter("/net/mroute") return c[0][self.stats_index] class VppMFibSignal(object): def __init__(self, test, route, interface, packet): self.route = route self.interface = interface self.packet = packet self.test = test def compare(self, signal): self.test.assertEqual(self.interface, signal.sw_if_index) self.test.assertEqual(self.route.table_id, signal.table_id) self.test.assertEqual(self.route.grp_addr_len, signal.grp_address_len) for i in range(self.route.grp_addr_len / 8): self.test.assertEqual(self.route.grp_addr[i], signal.grp_address[i]) if (self.route.grp_addr_len > 32): for i in range(4): self.test.assertEqual(self.route.src_addr[i], signal.src_address[i]) class VppMplsIpBind(VppObject): """ MPLS to IP Binding """ def __init__(self, test, local_label, dest_addr, dest_addr_len, table_id=0, ip_table_id=0, is_ip6=0): self._test = test self.dest_addr_len = dest_addr_len self.dest_addr = dest_addr self.local_label = local_label self.table_id = table_id self.ip_table_id = ip_table_id self.is_ip6 = is_ip6 if is_ip6: self.dest_addrn = inet_pton(AF_INET6, dest_addr) else: self.dest_addrn = inet_pton(AF_INET, dest_addr) def add_vpp_config(self): self._test.vapi.mpls_ip_bind_unbind(self.local_label, self.dest_addrn, self.dest_addr_len, table_id=self.table_id, ip_table_id=self.ip_table_id, is_ip4=(self.is_ip6 == 0)) self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): self._test.vapi.mpls_ip_bind_unbind(self.local_label, self.dest_addrn, self.dest_addr_len, table_id=self.table_id, ip_table_id=self.ip_table_id, is_bind=0, is_ip4=(self.is_ip6 == 0)) def query_vpp_config(self): dump = self._test.vapi.mpls_fib_dump() for e in dump: if self.local_label == e.label \ and self.table_id == e.table_id: return True return False def object_id(self): return ("%d:%s binds %d:%s/%d" % (self.table_id, self.local_label, self.ip_table_id, self.dest_addr, self.dest_addr_len)) class VppMplsTable(VppObject): def __init__(self, test, table_id): self._test = test self.table_id = table_id def add_vpp_config(self): self._test.vapi.mpls_table_add_del( self.table_id, is_add=1) self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): self._test.vapi.mpls_table_add_del( self.table_id, is_add=0) def query_vpp_config(self): # find the default route dump = self._test.vapi.mpls_fib_dump() if len(dump): return True return False def object_id(self): return ("table-mpls-%d" % (self.table_id)) class VppMplsRoute(VppObject): """ MPLS Route/LSP """ def __init__(self, test, local_label, eos_bit, paths, table_id=0, is_multicast=0): self._test = test self.paths = paths self.local_label = local_label self.eos_bit = eos_bit self.table_id = table_id self.is_multicast = is_multicast def add_vpp_config(self): is_multipath = len(self.paths) > 1 for path in self.paths: lstack = path.encode_labels() r = self._test.vapi.mpls_route_add_del( mr_label=self.local_label, mr_eos=self.eos_bit, mr_next_hop_proto=path.proto, mr_next_hop=path.nh_addr, mr_next_hop_sw_if_index=path.nh_itf, mr_table_id=self.table_id, mr_next_hop_table_id=path.nh_table_id, mr_next_hop_n_out_labels=len( lstack), mr_next_hop_out_label_stack=lstack, mr_next_hop_via_label=path.nh_via_label, mr_is_interface_rx=path.is_interface_rx, mr_is_rpf_id=path.is_rpf_id, mr_is_multicast=self.is_multicast, mr_is_multipath=is_multipath) self.stats_index = r.stats_index self._test.registry.register(self, self._test.logger) def remove_vpp_config(self): for path in self.paths: self._test.vapi.mpls_route_add_del( mr_label=self.local_label, mr_eos=self.eos_bit, mr_next_hop_proto=path.proto, mr_next_hop=path.nh_addr, mr_next_hop_sw_if_index=path.nh_itf, mr_table_id=self.table_id, mr_is_rpf_id=path.is_rpf_id, mr_is_add=0) def query_vpp_config(self): return find_mpls_route(self._test, self.table_id, self.local_label, self.eos_bit) def object_id(self): return ("%d:%s/%d" % (self.table_id, self.local_label, 20 + self.eos_bit)) def get_stats_to(self): c = self._test.statistics.get_counter("/net/route/to") return c[0][self.stats_index] def get_stats_via(self): c = self._test.statistics.get_counter("/net/route/via") return c[0][self.stats_index]