# NB NB NB NB NB NB NB NB NB NB NB # # NOTE: The API binary wrappers in this file are in the process of being # deprecated. DO NOT ADD NEW WRAPPERS HERE. Call the functions using # named arguments directly instead. # import os import time from collections import deque import queue from six import moves, iteritems from config import config from vpp_papi import VPPApiClient, mac_pton from hook import Hook from vpp_ip_route import MPLS_IETF_MAX_LABEL, MPLS_LABEL_INVALID # # Dictionary keyed on message name to override default values for # named parameters # defaultmapping = { 'acl_interface_add_del': {'is_add': 1, 'is_input': 1}, 'bd_ip_mac_add_del': {'is_add': 1, }, 'bfd_udp_add': {'is_authenticated': False, 'bfd_key_id': None, 'conf_key_id': None}, 'bfd_udp_auth_activate': {'bfd_key_id': None, 'conf_key_id': None, 'is_delayed': False}, 'bier_disp_entry_add_del': {'next_hop_rpf_id': -1, 'next_hop_is_ip4': 1, 'is_add': 1, }, 'bier_disp_table_add_del': {'is_add': 1, }, 'bier_imp_add': {'is_add': 1, }, 'bier_route_add_del': {'is_add': 1, }, 'bier_table_add_del': {'is_add': 1, }, 'bridge_domain_add_del': {'flood': 1, 'uu_flood': 1, 'forward': 1, 'learn': 1, 'is_add': 1, }, 'bvi_delete': {}, 'geneve_add_del_tunnel': {'mcast_sw_if_index': 4294967295, 'is_add': 1, 'decap_next_index': 4294967295, }, 'input_acl_set_interface': {'ip4_table_index': 4294967295, 'ip6_table_index': 4294967295, 'l2_table_index': 4294967295, }, 'ip6_add_del_address_using_prefix': {'is_add': 1, }, 'ip6nd_send_router_solicitation': {'irt': 1, 'mrt': 120, }, 'ip_add_del_route': {'next_hop_sw_if_index': 4294967295, 'next_hop_weight': 1, 'next_hop_via_label': 1048576, 'classify_table_index': 4294967295, 'is_add': 1, }, 'ip_mroute_add_del': {'is_add': 1, }, 'ip_neighbor_add_del': {'is_add': 1, }, 'ipsec_interface_add_del_spd': {'is_add': 1, }, 'ipsec_spd_add_del': {'is_add': 1, }, 'ipsec_spd_dump': {'sa_id': 4294967295, }, 'ipsec_spd_entry_add_del': {'local_port_stop': 65535, 'remote_port_stop': 65535, 'priority': 100, 'is_outbound': 1, 'is_add': 1, }, 'ipsec_tunnel_if_add_del': {'is_add': 1, 'anti_replay': 1, }, 'l2_emulation': {'enable': 1, }, 'l2fib_add_del': {'is_add': 1, }, 'lisp_add_del_adjacency': {'is_add': 1, }, 'lisp_add_del_local_eid': {'is_add': 1, }, 'lisp_add_del_locator': {'priority': 1, 'weight': 1, 'is_add': 1, }, 'lisp_add_del_locator_set': {'is_add': 1, }, 'lisp_add_del_remote_mapping': {'is_add': 1, }, 'macip_acl_interface_add_del': {'is_add': 1, }, 'mpls_ip_bind_unbind': {'is_ip4': 1, 'is_bind': 1, }, 'mpls_route_add_del': {'mr_next_hop_sw_if_index': 4294967295, 'mr_next_hop_weight': 1, 'mr_next_hop_via_label': 1048576, 'mr_is_add': 1, 'mr_classify_table_index': 4294967295, }, 'mpls_table_add_del': {'is_add': 1, }, 'mpls_tunnel_add_del': {'next_hop_sw_if_index': 4294967295, 'next_hop_weight': 1, 'next_hop_via_label': 1048576, 'is_add': 1, }, 'output_acl_set_interface': {'ip4_table_index': 4294967295, 'ip6_table_index': 4294967295, 'l2_table_index': 4294967295, }, 'pppoe_add_del_session': {'is_add': 1, }, 'policer_add_del': {'is_add': 1, 'conform_action': {'type': 1}, }, 'set_ipfix_exporter': {'collector_port': 4739, }, 'sr_policy_add': {'weight': 1, 'is_encap': 1, }, 'sw_interface_add_del_address': {'is_add': 1, }, 'sw_interface_ip6nd_ra_prefix': {'val_lifetime': 4294967295, 'pref_lifetime': 4294967295, }, 'sw_interface_set_ip_directed_broadcast': {'enable': 1, }, 'sw_interface_set_l2_bridge': {'enable': 1, }, 'sw_interface_set_mpls_enable': {'enable': 1, }, 'sw_interface_set_mtu': {'mtu': [0, 0, 0, 0], }, 'sw_interface_set_unnumbered': {'is_add': 1, }, 'sw_interface_span_enable_disable': {'state': 1, }, 'vxlan_add_del_tunnel': {'mcast_sw_if_index': 4294967295, 'is_add': 1, 'decap_next_index': 4294967295, 'instance': 4294967295, }, 'want_bfd_events': {'enable_disable': 1, }, 'want_igmp_events': {'enable': 1, }, 'want_interface_events': {'enable_disable': 1, }, 'want_l2_macs_events': {'enable_disable': 1, 'pid': os.getpid(), }, 'want_l2_macs_events2': {'enable_disable': 1, 'pid': os.getpid(), }, } def as_fn_signature(d): return ", ".join(f"{k}={v}" for k, v in d.items()) class CliFailedCommandError(Exception): """ cli command failed.""" class CliSyntaxError(Exception): """ cli command had a syntax error.""" class UnexpectedApiReturnValueError(Exception): """ exception raised when the API return value is unexpected """ pass class VppPapiProvider(object): """VPP-api provider using vpp-papi @property hook: hook object providing before and after api/cli hooks """ _zero, _negative = range(2) def __init__(self, name, test_class, read_timeout): self.hook = Hook(test_class) self.name = name self.test_class = test_class self._expect_api_retval = self._zero self._expect_stack = [] # install_dir is a class attribute. We need to set it before # calling the constructor. VPPApiClient.apidir = config.vpp_install_dir self.vpp = VPPApiClient(logger=test_class.logger, read_timeout=read_timeout, use_socket=True, server_address=test_class.get_api_sock_path()) self._events = queue.Queue() def __enter__(self): return self def assert_negative_api_retval(self): """ Expect API failure - used with with, e.g.:: with self.vapi.assert_negative_api_retval(): self.vapi. .. """ self._expect_stack.append(self._expect_api_retval) self._expect_api_retval = self._negative return self def assert_zero_api_retval(self): """ Expect API success - used with with, e.g.:: with self.vapi.assert_negative_api_retval(): self.vapi. :note: this is useful only inside another with block as success is the default expected value """ self._expect_stack.append(self._expect_api_retval) self._expect_api_retval = self._zero return self def __exit__(self, exc_type, exc_value, traceback): self._expect_api_retval = self._expect_stack.pop() def register_hook(self, hook): """Replace hook registration with new hook :param hook: """ self.hook = hook def collect_events(self): """ Collect all events from the internal queue and clear the queue. """ result = [] while True: try: e = self._events.get(block=False) result.append(e) except queue.Empty: return result return result def wait_for_event(self, timeout, name=None): """ Wait for and return next event. """ if name: self.test_class.logger.debug("Expecting event '%s' within %ss", name, timeout) else: self.test_class.logger.debug("Expecting event within %ss", timeout) try: e = self._events.get(timeout=timeout) except queue.Empty: raise Exception("Event did not occur within timeout") msgname = type(e).__name__ if name and msgname != name: raise Exception("Unexpected event received: %s, expected: %s" % msgname) self.test_class.logger.debug("Returning event %s:%s" % (name, e)) return e def __call__(self, name, event): """ Enqueue event in the internal event queue. """ self.test_class.logger.debug("New event: %s: %s" % (name, event)) self._events.put(event) def factory(self, name, apifn): def f(*a, **ka): fields = apifn._func.msg.fields # add positional and kw arguments d = ka for i, o in enumerate(fields[3:]): try: d[o] = a[i] except BaseException: break # Default override if name in defaultmapping: for k, v in iteritems(defaultmapping[name]): if k in d: continue d[k] = v return self.api(apifn, d) return f def __getattribute__(self, name): try: method = super(VppPapiProvider, self).__getattribute__(name) except AttributeError: method = self.factory(name, getattr(self.papi, name)) # lazily load the method so we don't need to call factory # again for this name. setattr(self, name, method) return method def connect(self): """Connect the API to VPP""" # This might be called before VPP is prepared to listen to the socket retries = 0 while not os.path.exists(self.test_class.get_api_sock_path()): time.sleep(0.5) retries += 1 if retries > 120: break self.vpp.connect(self.name[:63]) self.papi = self.vpp.api self.vpp.register_event_callback(self) def disconnect(self): """Disconnect the API from VPP""" self.vpp.disconnect() def api(self, api_fn, api_args, expected_retval=0): """ Call API function and check it's return value. Call the appropriate hooks before and after the API call :param api_fn: API function to call :param api_args: tuple of API function arguments :param expected_retval: Expected return value (Default value = 0) :returns: reply from the API """ self.hook.before_api(api_fn.__name__, api_args) reply = api_fn(**api_args) if self._expect_api_retval == self._negative: if hasattr(reply, 'retval') and reply.retval >= 0: msg = "%s(%s) passed unexpectedly: expected negative " \ "return value instead of %d in %s" % \ (api_fn.__name__, as_fn_signature(api_args), reply.retval, moves.reprlib.repr(reply)) self.test_class.logger.info(msg) raise UnexpectedApiReturnValueError(msg) elif self._expect_api_retval == self._zero: if hasattr(reply, 'retval') and reply.retval != expected_retval: msg = "%s(%s) failed, expected %d return value instead " \ "of %d in %s" % (api_fn.__name__, as_fn_signature(api_args), expected_retval, reply.retval, repr(reply)) self.test_class.logger.info(msg) raise UnexpectedApiReturnValueError(msg) else: raise Exception("Internal error, unexpected value for " "self._expect_api_retval %s" % self._expect_api_retval) self.hook.after_api(api_fn.__name__, api_args) return reply def cli_return_response(self, cli): """ Execute a CLI, calling the before/after hooks appropriately. Return the reply without examining it :param cli: CLI to execute :returns: response object """ self.hook.before_cli(cli) cli += '\n' r = self.papi.cli_inband(cmd=cli) self.hook.after_cli(cli) return r def cli(self, cli): """ Execute a CLI, calling the before/after hooks appropriately. :param cli: CLI to execute :returns: CLI output """ r = self.cli_return_response(cli) if r.retval == -156: raise CliSyntaxError(r.reply) if r.retval != 0: raise CliFailedCommandError(r.reply) if hasattr(r, 'reply'): return r.reply def ppcli(self, cli): """ Helper method to print CLI command in case of info logging level. :param cli: CLI to execute :returns: CLI output """ return cli + "\n" + self.cli(cli) def ip6nd_send_router_solicitation(self, sw_if_index, irt=1, mrt=120, mrc=0, mrd=0): return self.api(self.papi.ip6nd_send_router_solicitation, {'irt': irt, 'mrt': mrt, 'mrc': mrc, 'mrd': mrd, 'sw_if_index': sw_if_index}) def want_interface_events(self, enable_disable=1): return self.api(self.papi.want_interface_events, {'enable_disable': enable_disable, 'pid': os.getpid(), }) def sw_interface_set_mac_address(self, sw_if_index, mac): return self.api(self.papi.sw_interface_set_mac_address, {'sw_if_index': sw_if_index, 'mac_address': mac}) def p2p_ethernet_add(self, sw_if_index, remote_mac, subif_id): """Create p2p ethernet subinterface :param sw_if_index: main (parent) interface :param remote_mac: client (remote) mac address """ return self.api( self.papi.p2p_ethernet_add, {'parent_if_index': sw_if_index, 'remote_mac': remote_mac, 'subif_id': subif_id}) def p2p_ethernet_del(self, sw_if_index, remote_mac): """Delete p2p ethernet subinterface :param sw_if_index: main (parent) interface :param remote_mac: client (remote) mac address """ return self.api( self.papi.p2p_ethernet_del, {'parent_if_index': sw_if_index, 'remote_mac': remote_mac}) def create_vlan_subif(self, sw_if_index, vlan): """ :param vlan: :param sw_if_index: """ return self.api(self.papi.create_vlan_subif, {'sw_if_index': sw_if_index, 'vlan_id': vlan}) def create_loopback(self, mac=''): """ :param mac: (Optional) """ return self.api(self.papi.create_loopback, {'mac_address': mac}) def ip_route_dump(self, table_id, is_ip6=False): return self.api(self.papi.ip_route_dump, {'table': { 'table_id': table_id, 'is_ip6': is_ip6 }}) def ip_route_v2_dump(self, table_id, is_ip6=False, src=0): return self.api(self.papi.ip_route_v2_dump, { 'src': src, 'table': { 'table_id': table_id, 'is_ip6': is_ip6 } }) def ip_neighbor_add_del(self, sw_if_index, mac_address, ip_address, is_add=1, flags=0): """ Add neighbor MAC to IPv4 or IPv6 address. :param sw_if_index: :param mac_address: :param dst_address: :param is_add: (Default value = 1) :param flags: (Default value = 0/NONE) """ return self.api( self.papi.ip_neighbor_add_del, { 'is_add': is_add, 'neighbor': { 'sw_if_index': sw_if_index, 'flags': flags, 'mac_address': mac_address, 'ip_address': ip_address } } ) def udp_encap_add(self, src_ip, dst_ip, src_port, dst_port, table_id=0): """ Add a GRE tunnel :param src_ip: :param dst_ip: :param src_port: :param dst_port: :param outer_fib_id: (Default value = 0) """ return self.api( self.papi.udp_encap_add, { 'udp_encap': { 'src_ip': src_ip, 'dst_ip': dst_ip, 'src_port': src_port, 'dst_port': dst_port, 'table_id': table_id } }) def udp_encap_del(self, id): return self.api(self.papi.udp_encap_del, {'id': id}) def udp_encap_dump(self): return self.api(self.papi.udp_encap_dump, {}) def want_udp_encap_stats(self, enable=1): return self.api(self.papi.want_udp_encap_stats, {'enable': enable, 'pid': os.getpid()}) def mpls_route_dump(self, table_id): return self.api(self.papi.mpls_route_dump, {'table': { 'mt_table_id': table_id }}) def mpls_table_dump(self): return self.api(self.papi.mpls_table_dump, {}) def mpls_table_add_del( self, table_id, is_add=1): """ :param table_id :param is_add: (Default value = 1) """ return self.api( self.papi.mpls_table_add_del, {'mt_table': { 'mt_table_id': table_id, }, 'mt_is_add': is_add}) def mpls_route_add_del(self, table_id, label, eos, eos_proto, is_multicast, paths, is_add, is_multipath): """ MPLS Route add/del """ return self.api( self.papi.mpls_route_add_del, {'mr_route': { 'mr_table_id': table_id, 'mr_label': label, 'mr_eos': eos, 'mr_eos_proto': eos_proto, 'mr_is_multicast': is_multicast, 'mr_n_paths': len(paths), 'mr_paths': paths, }, 'mr_is_add': is_add, 'mr_is_multipath': is_multipath}) def mpls_ip_bind_unbind( self, label, prefix, table_id=0, ip_table_id=0, is_bind=1): """ """ return self.api( self.papi.mpls_ip_bind_unbind, {'mb_mpls_table_id': table_id, 'mb_label': label, 'mb_ip_table_id': ip_table_id, 'mb_is_bind': is_bind, 'mb_prefix': prefix}) def mpls_tunnel_add_del( self, tun_sw_if_index, paths, is_add=1, l2_only=0, is_multicast=0): """ """ return self.api( self.papi.mpls_tunnel_add_del, {'mt_is_add': is_add, 'mt_tunnel': { 'mt_sw_if_index': tun_sw_if_index, 'mt_l2_only': l2_only, 'mt_is_multicast': is_multicast, 'mt_n_paths': len(paths), 'mt_paths': paths, }}) def input_acl_set_interface( self, is_add, sw_if_index, ip4_table_index=0xFFFFFFFF, ip6_table_index=0xFFFFFFFF, l2_table_index=0xFFFFFFFF): """ :param is_add: :param sw_if_index: :param ip4_table_index: (Default value = 0xFFFFFFFF) :param ip6_table_index: (Default value = 0xFFFFFFFF) :param l2_table_index: (Default value = 0xFFFFFFFF) """ return self.api( self.papi.input_acl_set_interface, {'sw_if_index': sw_if_index, 'ip4_table_index': ip4_table_index, 'ip6_table_index': ip6_table_index, 'l2_table_index': l2_table_index, 'is_add': is_add}) def output_acl_set_interface( self, is_add, sw_if_index, ip4_table_index=0xFFFFFFFF, ip6_table_index=0xFFFFFFFF, l2_table_index=0xFFFFFFFF): """ :param is_add: :param sw_if_index: :param ip4_table_index: (Default value = 0xFFFFFFFF) :param ip6_table_index: (Default value = 0xFFFFFFFF) :param l2_table_index: (Default value = 0xFFFFFFFF) """ return self.api( self.papi.output_acl_set_interface, {'sw_if_index': sw_if_index, 'ip4_table_index': ip4_table_index, 'ip6_table_index': ip6_table_index, 'l2_table_index': l2_table_index, 'is_add': is_add}) def set_ipfix_exporter( self, collector_address, src_address, path_mtu, template_interval, vrf_id=0, collector_port=4739, udp_checksum=0): return self.api( self.papi.set_ipfix_exporter, { 'collector_address': collector_address, 'collector_port': collector_port, 'src_address': src_address, 'vrf_id': vrf_id, 'path_mtu': path_mtu, 'template_interval': template_interval, 'udp_checksum': udp_checksum, }) def mfib_signal_dump(self): return self.api(self.papi.mfib_signal_dump, {}) def ip_mroute_dump(self, table_id, is_ip6=False): return self.api(self.papi.ip_mroute_dump, {'table': { 'table_id': table_id, 'is_ip6': is_ip6 }}) def pppoe_add_del_session( self, client_ip, client_mac, session_id=0, is_add=1, decap_vrf_id=0): """ :param is_add: (Default value = 1) :param is_ipv6: (Default value = 0) :param client_ip: :param session_id: (Default value = 0) :param client_mac: :param decap_vrf_id: (Default value = 0) """ return self.api(self.papi.pppoe_add_del_session, {'is_add': is_add, 'session_id': session_id, 'client_ip': client_ip, 'decap_vrf_id': decap_vrf_id, 
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>

#include <vnet/fib/fib_attached_export.h>
#include <vnet/fib/fib_entry_cover.h>
#include <vnet/fib/fib_entry_src.h>
#include <vnet/fib/fib_entry_delegate.h>
#include <vnet/dpo/drop_dpo.h>

/**
 * A description of the need to import routes from the export table
 */
typedef struct fib_ae_import_t_
{
    /**
     * The entry in the export table that this importer
     * is importing covereds from
     */
    fib_node_index_t faei_export_entry;

    /**
     * The attached entry in the import table
     */
    fib_node_index_t faei_import_entry;
    /**
     * the sibling index on the cover
     */
    u32 faei_export_sibling;

    /**
     * The index of the exporter tracker. Not set if the
     * export entry is not valid for export
     */
    fib_node_index_t faei_exporter;

    /**
     * A vector/list of imported entry indicies
     */
    fib_node_index_t *faei_importeds;

    /**
     * The FIB index and prefix we are tracking
     */
    fib_node_index_t faei_export_fib;
    fib_prefix_t faei_prefix;

    /**
     * The FIB index we are importing into
     */
    fib_node_index_t faei_import_fib;
} fib_ae_import_t;

/**
 * A description of the need to export routes to one or more export tables
 */
typedef struct fib_ae_export_t_ {
    /**
     * The vector/list of import tracker indicies
     */
    fib_node_index_t *faee_importers;

    /**
     * THe connected entry this export is acting on behalf of
     */