ospfd.c
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上传日期:2009-11-15
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文件大小:37k
- /* OSPF version 2 daemon program.
- Copyright (C) 1999, 2000 Toshiaki Takada
- This file is part of GNU Zebra.
- GNU Zebra is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any
- later version.
- GNU Zebra is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNU Zebra; see the file COPYING. If not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
- #include <zebra.h>
- #include "thread.h"
- #include "vty.h"
- #include "command.h"
- #include "linklist.h"
- #include "prefix.h"
- #include "table.h"
- #include "if.h"
- #include "memory.h"
- #include "stream.h"
- #include "log.h"
- #include "sockunion.h" /* for inet_aton () */
- #include "zclient.h"
- #include "plist.h"
- #include "ospfd/ospfd.h"
- #include "ospfd/ospf_network.h"
- #include "ospfd/ospf_interface.h"
- #include "ospfd/ospf_ism.h"
- #include "ospfd/ospf_asbr.h"
- #include "ospfd/ospf_lsa.h"
- #include "ospfd/ospf_lsdb.h"
- #include "ospfd/ospf_neighbor.h"
- #include "ospfd/ospf_nsm.h"
- #include "ospfd/ospf_spf.h"
- #include "ospfd/ospf_packet.h"
- #include "ospfd/ospf_dump.h"
- #include "ospfd/ospf_zebra.h"
- #include "ospfd/ospf_abr.h"
- #include "ospfd/ospf_flood.h"
- #include "ospfd/ospf_route.h"
- #include "ospfd/ospf_ase.h"
- /* OSPF process wide configuration. */
- static struct ospf_master ospf_master;
- /* OSPF process wide configuration pointer to export. */
- struct ospf_master *om;
- extern struct zclient *zclient;
- void ospf_remove_vls_through_area (struct ospf *, struct ospf_area *);
- void ospf_network_free (struct ospf *, struct ospf_network *);
- void ospf_area_free (struct ospf_area *);
- void ospf_network_run (struct ospf *, struct prefix *, struct ospf_area *);
- /* Get Router ID from ospf interface list. */
- struct in_addr
- ospf_router_id_get (list if_list)
- {
- listnode node;
- struct in_addr router_id;
- memset (&router_id, 0, sizeof (struct in_addr));
- for (node = listhead (if_list); node; nextnode (node))
- {
- struct ospf_interface *oi = getdata (node);
- if (!if_is_up (oi->ifp) ||
- OSPF_IF_PARAM (oi, passive_interface) == OSPF_IF_PASSIVE)
- continue;
-
- /* Ignore virtual link interface. */
- if (oi->type != OSPF_IFTYPE_VIRTUALLINK &&
- oi->type != OSPF_IFTYPE_LOOPBACK)
- if (IPV4_ADDR_CMP (&router_id, &oi->address->u.prefix4) < 0)
- router_id = oi->address->u.prefix4;
- }
- return router_id;
- }
- #define OSPF_EXTERNAL_LSA_ORIGINATE_DELAY 1
- void
- ospf_router_id_update (struct ospf *ospf)
- {
- struct in_addr router_id, router_id_old;
- listnode node;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Router-ID[OLD:%s]: Update", inet_ntoa (ospf->router_id));
- router_id_old = ospf->router_id;
- if (ospf->router_id_static.s_addr != 0)
- router_id = ospf->router_id_static;
- else
- router_id = ospf_router_id_get (ospf->oiflist);
- ospf->router_id = router_id;
-
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Router-ID[NEW:%s]: Update", inet_ntoa (ospf->router_id));
- if (!IPV4_ADDR_SAME (&router_id_old, &router_id))
- {
- for (node = listhead (ospf->oiflist); node; nextnode (node))
- {
- struct ospf_interface *oi = getdata (node);
- /* Update self-neighbor's router_id. */
- oi->nbr_self->router_id = router_id;
- }
- /* If AS-external-LSA is queued, then flush those LSAs. */
- if (router_id_old.s_addr == 0 && ospf->external_origin)
- {
- int type;
- /* Originate each redistributed external route. */
- for (type = 0; type < ZEBRA_ROUTE_MAX; type++)
- if (ospf->external_origin & (1 << type))
- thread_add_event (master, ospf_external_lsa_originate_timer,
- ospf, type);
- /* Originate Deafult. */
- if (ospf->external_origin & (1 << ZEBRA_ROUTE_MAX))
- thread_add_event (master, ospf_default_originate_timer,
- &ospf->default_originate, 0);
- ospf->external_origin = 0;
- }
- OSPF_TIMER_ON (ospf->t_router_lsa_update,
- ospf_router_lsa_update_timer, OSPF_LSA_UPDATE_DELAY);
- }
- }
- int
- ospf_router_id_update_timer (struct thread *thread)
- {
- struct ospf *ospf = THREAD_ARG (thread);
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Router-ID: Update timer fired!");
- ospf->t_router_id_update = NULL;
- ospf_router_id_update (ospf);
- return 0;
- }
- /* For OSPF area sort by area id. */
- int
- ospf_area_id_cmp (struct ospf_area *a1, struct ospf_area *a2)
- {
- if (ntohl (a1->area_id.s_addr) > ntohl (a2->area_id.s_addr))
- return 1;
- if (ntohl (a1->area_id.s_addr) < ntohl (a2->area_id.s_addr))
- return -1;
- return 0;
- }
- /* Allocate new ospf structure. */
- struct ospf *
- ospf_new ()
- {
- int i;
- struct ospf *new = XCALLOC (MTYPE_OSPF_TOP, sizeof (struct ospf));
- new->router_id.s_addr = htonl (0);
- new->router_id_static.s_addr = htonl (0);
- new->abr_type = OSPF_ABR_STAND;
- new->oiflist = list_new ();
- new->vlinks = list_new ();
- new->areas = list_new ();
- new->areas->cmp = (int (*)(void *, void *)) ospf_area_id_cmp;
- new->networks = route_table_init ();
- new->nbr_nbma = route_table_init ();
- new->lsdb = ospf_lsdb_new ();
- new->default_originate = DEFAULT_ORIGINATE_NONE;
- new->new_external_route = route_table_init ();
- new->old_external_route = route_table_init ();
- new->external_lsas = route_table_init ();
- /* Distribute parameter init. */
- for (i = 0; i <= ZEBRA_ROUTE_MAX; i++)
- {
- new->dmetric[i].type = -1;
- new->dmetric[i].value = -1;
- }
- new->default_metric = -1;
- new->ref_bandwidth = OSPF_DEFAULT_REF_BANDWIDTH;
- /* SPF timer value init. */
- new->spf_delay = OSPF_SPF_DELAY_DEFAULT;
- new->spf_holdtime = OSPF_SPF_HOLDTIME_DEFAULT;
- /* MaxAge init. */
- new->maxage_lsa = list_new ();
- new->t_maxage_walker =
- thread_add_timer (master, ospf_lsa_maxage_walker,
- new, OSPF_LSA_MAXAGE_CHECK_INTERVAL);
- /* Distance table init. */
- new->distance_table = route_table_init ();
- new->lsa_refresh_queue.index = 0;
- new->lsa_refresh_interval = OSPF_LSA_REFRESH_INTERVAL_DEFAULT;
- new->t_lsa_refresher = thread_add_timer (master, ospf_lsa_refresh_walker,
- new, new->lsa_refresh_interval);
- new->lsa_refresher_started = time (NULL);
- new->fd = ospf_sock_init ();
- if (new->fd >= 0)
- new->t_read = thread_add_read (master, ospf_read, new, new->fd);
- new->oi_write_q = list_new ();
-
- return new;
- }
- struct ospf *
- ospf_lookup ()
- {
- if (listcount (om->ospf) == 0)
- return NULL;
- return getdata (listhead (om->ospf));
- }
- void
- ospf_add (struct ospf *ospf)
- {
- listnode_add (om->ospf, ospf);
- }
- void
- ospf_delete (struct ospf *ospf)
- {
- listnode_delete (om->ospf, ospf);
- }
- struct ospf *
- ospf_get ()
- {
- struct ospf *ospf;
- ospf = ospf_lookup ();
- if (ospf == NULL)
- {
- ospf = ospf_new ();
- ospf_add (ospf);
- if (ospf->router_id_static.s_addr == 0)
- ospf_router_id_update (ospf);
- #ifdef HAVE_OPAQUE_LSA
- ospf_opaque_type11_lsa_init (ospf);
- #endif /* HAVE_OPAQUE_LSA */
- }
- return ospf;
- }
- void
- ospf_finish (struct ospf *ospf)
- {
- struct route_node *rn;
- struct ospf_nbr_nbma *nbr_nbma;
- struct ospf_lsa *lsa;
- listnode node;
- int i;
- #ifdef HAVE_OPAQUE_LSA
- ospf_opaque_type11_lsa_term (ospf);
- #endif /* HAVE_OPAQUE_LSA */
- /* Unredister redistribution */
- for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
- ospf_redistribute_unset (ospf, i);
- for (node = listhead (ospf->areas); node;)
- {
- struct ospf_area *area = getdata (node);
- nextnode (node);
-
- ospf_remove_vls_through_area (ospf, area);
- }
-
- for (node = listhead (ospf->vlinks); node; )
- {
- struct ospf_vl_data *vl_data = node->data;
- nextnode (node);
-
- ospf_vl_delete (ospf, vl_data);
- }
-
- list_delete (ospf->vlinks);
- /* Reset interface. */
- for (node = listhead (ospf->oiflist); node;)
- {
- struct ospf_interface *oi = getdata (node);
- nextnode (node);
-
- if (oi)
- ospf_if_free (oi);
- }
- /* Clear static neighbors */
- for (rn = route_top (ospf->nbr_nbma); rn; rn = route_next (rn))
- if ((nbr_nbma = rn->info))
- {
- OSPF_POLL_TIMER_OFF (nbr_nbma->t_poll);
- if (nbr_nbma->nbr)
- {
- nbr_nbma->nbr->nbr_nbma = NULL;
- nbr_nbma->nbr = NULL;
- }
- if (nbr_nbma->oi)
- {
- listnode_delete (nbr_nbma->oi->nbr_nbma, nbr_nbma);
- nbr_nbma->oi = NULL;
- }
- XFREE (MTYPE_OSPF_NEIGHBOR_STATIC, nbr_nbma);
- }
- route_table_finish (ospf->nbr_nbma);
- /* Clear networks and Areas. */
- for (rn = route_top (ospf->networks); rn; rn = route_next (rn))
- {
- struct ospf_network *network;
- if ((network = rn->info) != NULL)
- {
- ospf_network_free (ospf, network);
- rn->info = NULL;
- route_unlock_node (rn);
- }
- }
- for (node = listhead (ospf->areas); node;)
- {
- struct ospf_area *area = getdata (node);
- nextnode (node);
-
- listnode_delete (ospf->areas, area);
- ospf_area_free (area);
- }
- /* Cancel all timers. */
- OSPF_TIMER_OFF (ospf->t_external_lsa);
- OSPF_TIMER_OFF (ospf->t_router_id_update);
- OSPF_TIMER_OFF (ospf->t_router_lsa_update);
- OSPF_TIMER_OFF (ospf->t_spf_calc);
- OSPF_TIMER_OFF (ospf->t_ase_calc);
- OSPF_TIMER_OFF (ospf->t_maxage);
- OSPF_TIMER_OFF (ospf->t_maxage_walker);
- OSPF_TIMER_OFF (ospf->t_abr_task);
- OSPF_TIMER_OFF (ospf->t_distribute_update);
- OSPF_TIMER_OFF (ospf->t_lsa_refresher);
- OSPF_TIMER_OFF (ospf->t_read);
- OSPF_TIMER_OFF (ospf->t_write);
- close (ospf->fd);
-
- #ifdef HAVE_OPAQUE_LSA
- LSDB_LOOP (OPAQUE_AS_LSDB (ospf), rn, lsa)
- ospf_discard_from_db (ospf, ospf->lsdb, lsa);
- #endif /* HAVE_OPAQUE_LSA */
- LSDB_LOOP (EXTERNAL_LSDB (ospf), rn, lsa)
- ospf_discard_from_db (ospf, ospf->lsdb, lsa);
- ospf_lsdb_delete_all (ospf->lsdb);
- ospf_lsdb_free (ospf->lsdb);
- for (node = listhead (ospf->maxage_lsa); node; nextnode (node))
- ospf_lsa_unlock (getdata (node));
- list_delete (ospf->maxage_lsa);
- if (ospf->old_table)
- ospf_route_table_free (ospf->old_table);
- if (ospf->new_table)
- {
- ospf_route_delete (ospf->new_table);
- ospf_route_table_free (ospf->new_table);
- }
- if (ospf->old_rtrs)
- ospf_rtrs_free (ospf->old_rtrs);
- if (ospf->new_rtrs)
- ospf_rtrs_free (ospf->new_rtrs);
- if (ospf->new_external_route)
- {
- ospf_route_delete (ospf->new_external_route);
- ospf_route_table_free (ospf->new_external_route);
- }
- if (ospf->old_external_route)
- {
- ospf_route_delete (ospf->old_external_route);
- ospf_route_table_free (ospf->old_external_route);
- }
- if (ospf->external_lsas)
- {
- ospf_ase_external_lsas_finish (ospf->external_lsas);
- }
- list_delete (ospf->areas);
-
- for (i = ZEBRA_ROUTE_SYSTEM; i <= ZEBRA_ROUTE_MAX; i++)
- if (EXTERNAL_INFO (i) != NULL)
- for (rn = route_top (EXTERNAL_INFO (i)); rn; rn = route_next (rn))
- {
- if (rn->info == NULL)
- continue;
-
- XFREE (MTYPE_OSPF_EXTERNAL_INFO, rn->info);
- rn->info = NULL;
- route_unlock_node (rn);
- }
- ospf_distance_reset (ospf);
- route_table_finish (ospf->distance_table);
- ospf_delete (ospf);
- XFREE (MTYPE_OSPF_TOP, ospf);
- }
- /* allocate new OSPF Area object */
- struct ospf_area *
- ospf_area_new (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *new;
- /* Allocate new config_network. */
- new = XCALLOC (MTYPE_OSPF_AREA, sizeof (struct ospf_area));
- new->ospf = ospf;
- new->area_id = area_id;
- new->external_routing = OSPF_AREA_DEFAULT;
- new->default_cost = 1;
- new->auth_type = OSPF_AUTH_NULL;
- /* New LSDB init. */
- new->lsdb = ospf_lsdb_new ();
- /* Self-originated LSAs initialize. */
- new->router_lsa_self = NULL;
- #ifdef HAVE_OPAQUE_LSA
- ospf_opaque_type10_lsa_init (new);
- #endif /* HAVE_OPAQUE_LSA */
- new->oiflist = list_new ();
- new->ranges = route_table_init ();
- if (area_id.s_addr == OSPF_AREA_BACKBONE)
- ospf->backbone = new;
- return new;
- }
- void
- ospf_area_free (struct ospf_area *area)
- {
- struct route_node *rn;
- struct ospf_lsa *lsa;
- /* Free LSDBs. */
- LSDB_LOOP (ROUTER_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- LSDB_LOOP (NETWORK_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- LSDB_LOOP (SUMMARY_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- LSDB_LOOP (ASBR_SUMMARY_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- #ifdef HAVE_NSSA
- LSDB_LOOP (NSSA_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- #endif /* HAVE_NSSA */
- #ifdef HAVE_OPAQUE_LSA
- LSDB_LOOP (OPAQUE_AREA_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- LSDB_LOOP (OPAQUE_LINK_LSDB (area), rn, lsa)
- ospf_discard_from_db (area->ospf, area->lsdb, lsa);
- #endif /* HAVE_OPAQUE_LSA */
- ospf_lsdb_delete_all (area->lsdb);
- ospf_lsdb_free (area->lsdb);
- #ifdef HAVE_OPAQUE_LSA
- ospf_opaque_type10_lsa_term (area);
- #endif /* HAVE_OPAQUE_LSA */
- ospf_lsa_unlock (area->router_lsa_self);
-
- route_table_finish (area->ranges);
- list_delete (area->oiflist);
- if (EXPORT_NAME (area))
- free (EXPORT_NAME (area));
- if (IMPORT_NAME (area))
- free (IMPORT_NAME (area));
- /* Cancel timer. */
- OSPF_TIMER_OFF (area->t_router_lsa_self);
- if (OSPF_IS_AREA_BACKBONE (area))
- area->ospf->backbone = NULL;
- XFREE (MTYPE_OSPF_AREA, area);
- }
- void
- ospf_area_check_free (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (area &&
- listcount (area->oiflist) == 0 &&
- area->ranges->top == NULL &&
- area->shortcut_configured == OSPF_SHORTCUT_DEFAULT &&
- area->external_routing == OSPF_AREA_DEFAULT &&
- area->no_summary == 0 &&
- area->default_cost == 1 &&
- EXPORT_NAME (area) == NULL &&
- IMPORT_NAME (area) == NULL &&
- area->auth_type == OSPF_AUTH_NULL)
- {
- listnode_delete (ospf->areas, area);
- ospf_area_free (area);
- }
- }
- struct ospf_area *
- ospf_area_get (struct ospf *ospf, struct in_addr area_id, int format)
- {
- struct ospf_area *area;
-
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (!area)
- {
- area = ospf_area_new (ospf, area_id);
- area->format = format;
- listnode_add_sort (ospf->areas, area);
- ospf_check_abr_status (ospf);
- }
- return area;
- }
- struct ospf_area *
- ospf_area_lookup_by_area_id (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- listnode node;
- for (node = listhead (ospf->areas); node; nextnode (node))
- {
- area = getdata (node);
- if (IPV4_ADDR_SAME (&area->area_id, &area_id))
- return area;
- }
- return NULL;
- }
- void
- ospf_area_add_if (struct ospf_area *area, struct ospf_interface *oi)
- {
- listnode_add (area->oiflist, oi);
- }
- void
- ospf_area_del_if (struct ospf_area *area, struct ospf_interface *oi)
- {
- listnode_delete (area->oiflist, oi);
- }
- /* Config network statement related functions. */
- struct ospf_network *
- ospf_network_new (struct in_addr area_id, int format)
- {
- struct ospf_network *new;
- new = XCALLOC (MTYPE_OSPF_NETWORK, sizeof (struct ospf_network));
- new->area_id = area_id;
- new->format = format;
-
- return new;
- }
- void
- ospf_network_free (struct ospf *ospf, struct ospf_network *network)
- {
- ospf_area_check_free (ospf, network->area_id);
- ospf_schedule_abr_task (ospf);
- XFREE (MTYPE_OSPF_NETWORK, network);
- }
- int
- ospf_network_set (struct ospf *ospf, struct prefix_ipv4 *p,
- struct in_addr area_id)
- {
- struct ospf_network *network;
- struct ospf_area *area;
- struct route_node *rn;
- struct external_info *ei;
- int ret = OSPF_AREA_ID_FORMAT_ADDRESS;
- rn = route_node_get (ospf->networks, (struct prefix *)p);
- if (rn->info)
- {
- /* There is already same network statement. */
- route_unlock_node (rn);
- return 0;
- }
- rn->info = network = ospf_network_new (area_id, ret);
- area = ospf_area_get (ospf, area_id, ret);
- /* Run network config now. */
- ospf_network_run (ospf, (struct prefix *)p, area);
- /* Update connected redistribute. */
- if (ospf_is_type_redistributed (ZEBRA_ROUTE_CONNECT))
- if (EXTERNAL_INFO (ZEBRA_ROUTE_CONNECT))
- for (rn = route_top (EXTERNAL_INFO (ZEBRA_ROUTE_CONNECT));
- rn; rn = route_next (rn))
- if ((ei = rn->info) != NULL)
- if (ospf_external_info_find_lsa (ospf, &ei->p))
- if (!ospf_distribute_check_connected (ospf, ei))
- ospf_external_lsa_flush (ospf, ei->type, &ei->p,
- ei->ifindex, ei->nexthop);
- ospf_area_check_free (ospf, area_id);
- return 1;
- }
- int
- ospf_network_unset (struct ospf *ospf, struct prefix_ipv4 *p,
- struct in_addr area_id)
- {
- struct route_node *rn;
- struct ospf_network *network;
- struct external_info *ei;
- rn = route_node_lookup (ospf->networks, (struct prefix *)p);
- if (rn == NULL)
- return 0;
- network = rn->info;
- if (!IPV4_ADDR_SAME (&area_id, &network->area_id))
- return 0;
- ospf_network_free (ospf, rn->info);
- rn->info = NULL;
- route_unlock_node (rn);
- ospf_if_update (ospf);
-
- /* Update connected redistribute. */
- if (ospf_is_type_redistributed (ZEBRA_ROUTE_CONNECT))
- if (EXTERNAL_INFO (ZEBRA_ROUTE_CONNECT))
- for (rn = route_top (EXTERNAL_INFO (ZEBRA_ROUTE_CONNECT));
- rn; rn = route_next (rn))
- if ((ei = rn->info) != NULL)
- if (!ospf_external_info_find_lsa (ospf, &ei->p))
- if (ospf_distribute_check_connected (ospf, ei))
- ospf_external_lsa_originate (ospf, ei);
- return 1;
- }
- void
- ospf_network_run (struct ospf *ospf, struct prefix *p, struct ospf_area *area)
- {
- struct interface *ifp;
- listnode node;
- /* Schedule Router ID Update. */
- if (ospf->router_id_static.s_addr == 0)
- if (ospf->t_router_id_update == NULL)
- {
- OSPF_TIMER_ON (ospf->t_router_id_update, ospf_router_id_update_timer,
- OSPF_ROUTER_ID_UPDATE_DELAY);
- }
- /* Get target interface. */
- for (node = listhead (om->iflist); node; nextnode (node))
- {
- listnode cn;
-
- if ((ifp = getdata (node)) == NULL)
- continue;
- if (memcmp (ifp->name, "VLINK", 5) == 0)
- continue;
-
- /* if interface prefix is match specified prefix,
- then create socket and join multicast group. */
- for (cn = listhead (ifp->connected); cn; nextnode (cn))
- {
- struct connected *co = getdata (cn);
- struct prefix *addr;
- if (if_is_pointopoint (ifp))
- addr = co->destination;
- else
- addr = co->address;
- if (p->family == co->address->family &&
- ! ospf_if_is_configured (ospf, &(addr->u.prefix4)))
- if ((if_is_pointopoint (ifp) &&
- IPV4_ADDR_SAME (&(addr->u.prefix4), &(p->u.prefix4))) ||
- prefix_match (p, addr))
- {
- struct ospf_interface *oi;
-
- oi = ospf_if_new (ospf, ifp, co->address);
- oi->connected = co;
-
- oi->nbr_self->address = *oi->address;
- area->act_ints++;
- oi->area = area;
- oi->params = ospf_lookup_if_params (ifp, oi->address->u.prefix4);
- oi->output_cost = ospf_if_get_output_cost (oi);
-
- if (area->external_routing != OSPF_AREA_DEFAULT)
- UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- oi->nbr_self->priority = OSPF_IF_PARAM (oi, priority);
-
- /* Add pseudo neighbor. */
- ospf_nbr_add_self (oi);
- /* Make sure pseudo neighbor's router_id. */
- oi->nbr_self->router_id = ospf->router_id;
- oi->nbr_self->src = oi->address->u.prefix4;
-
- /* Relate ospf interface to ospf instance. */
- oi->ospf = ospf;
- /* update network type as interface flag */
- /* If network type is specified previously,
- skip network type setting. */
- oi->type = IF_DEF_PARAMS (ifp)->type;
-
- /* Set area flag. */
- switch (area->external_routing)
- {
- case OSPF_AREA_DEFAULT:
- SET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- break;
- case OSPF_AREA_STUB:
- UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- break;
- #ifdef HAVE_NSSA
- case OSPF_AREA_NSSA:
- UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- SET_FLAG (oi->nbr_self->options, OSPF_OPTION_NP);
- break;
- #endif /* HAVE_NSSA */
- }
- ospf_area_add_if (oi->area, oi);
- if (if_is_up (ifp))
- ospf_if_up (oi);
- break;
- }
- }
- }
- }
- void
- ospf_ls_upd_queue_empty (struct ospf_interface *oi)
- {
- struct route_node *rn;
- listnode node;
- list lst;
- struct ospf_lsa *lsa;
- /* empty ls update queue */
- for (rn = route_top (oi->ls_upd_queue); rn;
- rn = route_next (rn))
- if ((lst = (list) rn->info))
- {
- for (node = listhead (lst); node; nextnode (node))
- if ((lsa = getdata (node)))
- ospf_lsa_unlock (lsa);
- list_free (lst);
- rn->info = NULL;
- }
-
- /* remove update event */
- if (oi->t_ls_upd_event)
- {
- thread_cancel (oi->t_ls_upd_event);
- oi->t_ls_upd_event = NULL;
- }
- }
- void
- ospf_if_update (struct ospf *ospf)
- {
- struct route_node *rn;
- listnode node;
- listnode next;
- struct ospf_network *network;
- struct ospf_area *area;
- if (ospf != NULL)
- {
- /* Update Router ID scheduled. */
- if (ospf->router_id_static.s_addr == 0)
- if (ospf->t_router_id_update == NULL)
- {
- OSPF_TIMER_ON (ospf->t_router_id_update,
- ospf_router_id_update_timer,
- OSPF_ROUTER_ID_UPDATE_DELAY);
- }
- /* Find interfaces that not configured already. */
- for (node = listhead (ospf->oiflist); node; node = next)
- {
- int found = 0;
- struct ospf_interface *oi = getdata (node);
- struct connected *co = oi->connected;
-
- next = nextnode (node);
- if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
- continue;
-
- for (rn = route_top (ospf->networks); rn; rn = route_next (rn))
- {
- if (rn->info == NULL)
- continue;
-
- if ((oi->type == OSPF_IFTYPE_POINTOPOINT
- && IPV4_ADDR_SAME (&(co->destination->u.prefix4),
- &(rn->p.u.prefix4)))
- || prefix_match (&(rn->p), co->address))
- {
- found = 1;
- route_unlock_node (rn);
- break;
- }
- }
- if (found == 0)
- ospf_if_free (oi);
- }
-
- /* Run each interface. */
- for (rn = route_top (ospf->networks); rn; rn = route_next (rn))
- if (rn->info != NULL)
- {
- network = (struct ospf_network *) rn->info;
- area = ospf_area_get (ospf, network->area_id, network->format);
- ospf_network_run (ospf, &rn->p, area);
- }
- }
- }
- void
- ospf_remove_vls_through_area (struct ospf *ospf, struct ospf_area *area)
- {
- listnode node, next;
- struct ospf_vl_data *vl_data;
- for (node = listhead (ospf->vlinks); node; node = next)
- {
- next = node->next;
- if ((vl_data = getdata (node)) != NULL)
- if (IPV4_ADDR_SAME (&vl_data->vl_area_id, &area->area_id))
- ospf_vl_delete (ospf, vl_data);
- }
- }
- struct message ospf_area_type_msg[] =
- {
- { OSPF_AREA_DEFAULT, "Default" },
- { OSPF_AREA_STUB, "Stub" },
- { OSPF_AREA_NSSA, "NSSA" },
- };
- int ospf_area_type_msg_max = OSPF_AREA_TYPE_MAX;
- void
- ospf_area_type_set (struct ospf_area *area, int type)
- {
- listnode node;
- struct ospf_interface *oi;
- if (area->external_routing == type)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Area[%s]: Types are the same, ignored.",
- inet_ntoa (area->area_id));
- return;
- }
- area->external_routing = type;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Area[%s]: Configured as %s", inet_ntoa (area->area_id),
- LOOKUP (ospf_area_type_msg, type));
- switch (area->external_routing)
- {
- case OSPF_AREA_DEFAULT:
- for (node = listhead (area->oiflist); node; nextnode (node))
- if ((oi = getdata (node)) != NULL)
- if (oi->nbr_self != NULL)
- SET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- break;
- case OSPF_AREA_STUB:
- for (node = listhead (area->oiflist); node; nextnode (node))
- if ((oi = getdata (node)) != NULL)
- if (oi->nbr_self != NULL)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("setting options on %s accordingly", IF_NAME (oi));
- UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("options set on %s: %x",
- IF_NAME (oi), OPTIONS (oi));
- }
- break;
- case OSPF_AREA_NSSA:
- #ifdef HAVE_NSSA
- for (node = listhead (area->oiflist); node; nextnode (node))
- if ((oi = getdata (node)) != NULL)
- if (oi->nbr_self != NULL)
- {
- zlog_info ("setting nssa options on %s accordingly", IF_NAME (oi));
- UNSET_FLAG (oi->nbr_self->options, OSPF_OPTION_E);
- SET_FLAG (oi->nbr_self->options, OSPF_OPTION_NP);
- zlog_info ("options set on %s: %x", IF_NAME (oi), OPTIONS (oi));
- }
- #endif /* HAVE_NSSA */
- break;
- default:
- break;
- }
- ospf_router_lsa_timer_add (area);
- ospf_schedule_abr_task (area->ospf);
- }
- int
- ospf_area_shortcut_set (struct ospf *ospf, struct ospf_area *area, int mode)
- {
- if (area->shortcut_configured == mode)
- return 0;
- area->shortcut_configured = mode;
- ospf_router_lsa_timer_add (area);
- ospf_schedule_abr_task (ospf);
- ospf_area_check_free (ospf, area->area_id);
- return 1;
- }
- int
- ospf_area_shortcut_unset (struct ospf *ospf, struct ospf_area *area)
- {
- area->shortcut_configured = OSPF_SHORTCUT_DEFAULT;
- ospf_router_lsa_timer_add (area);
- ospf_area_check_free (ospf, area->area_id);
- ospf_schedule_abr_task (ospf);
- return 1;
- }
- int
- ospf_area_vlink_count (struct ospf *ospf, struct ospf_area *area)
- {
- struct ospf_vl_data *vl;
- listnode node;
- int count = 0;
- for (node = listhead (ospf->vlinks); node; nextnode (node))
- {
- vl = getdata (node);
- if (IPV4_ADDR_SAME (&vl->vl_area_id, &area->area_id))
- count++;
- }
- return count;
- }
- int
- ospf_area_stub_set (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- int format = OSPF_AREA_ID_FORMAT_ADDRESS;
- area = ospf_area_get (ospf, area_id, format);
- if (ospf_area_vlink_count (ospf, area))
- return 0;
- if (area->external_routing != OSPF_AREA_STUB)
- ospf_area_type_set (area, OSPF_AREA_STUB);
- return 1;
- }
- int
- ospf_area_stub_unset (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (area == NULL)
- return 1;
- if (area->external_routing == OSPF_AREA_STUB)
- ospf_area_type_set (area, OSPF_AREA_DEFAULT);
- ospf_area_check_free (ospf, area_id);
- return 1;
- }
- int
- ospf_area_no_summary_set (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- int format = OSPF_AREA_ID_FORMAT_ADDRESS;
- area = ospf_area_get (ospf, area_id, format);
- area->no_summary = 1;
- return 1;
- }
- int
- ospf_area_no_summary_unset (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (area == NULL)
- return 0;
- area->no_summary = 0;
- ospf_area_check_free (ospf, area_id);
- return 1;
- }
- int
- ospf_area_nssa_set (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- int format = OSPF_AREA_ID_FORMAT_ADDRESS;
- area = ospf_area_get (ospf, area_id, format);
- if (ospf_area_vlink_count (ospf, area))
- return 0;
- if (area->external_routing != OSPF_AREA_NSSA)
- {
- ospf_area_type_set (area, OSPF_AREA_NSSA);
- ospf->anyNSSA++;
- }
- return 1;
- }
- int
- ospf_area_nssa_unset (struct ospf *ospf, struct in_addr area_id)
- {
- struct ospf_area *area;
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (area == NULL)
- return 0;
- if (area->external_routing == OSPF_AREA_NSSA)
- {
- ospf->anyNSSA--;
- ospf_area_type_set (area, OSPF_AREA_DEFAULT);
- }
- ospf_area_check_free (ospf, area_id);
- return 1;
- }
- int
- ospf_area_nssa_translator_role_set (struct ospf *ospf, struct in_addr area_id,
- int role)
- {
- struct ospf_area *area;
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (area == NULL)
- return 0;
- area->NSSATranslator = role;
- return 1;
- }
- int
- ospf_area_nssa_translator_role_unset (struct ospf *ospf,
- struct in_addr area_id)
- {
- struct ospf_area *area;
- area = ospf_area_lookup_by_area_id (ospf, area_id);
- if (area == NULL)
- return 0;
- area->NSSATranslator = OSPF_NSSA_ROLE_CANDIDATE;
- ospf_area_check_free (ospf, area_id);
- return 1;
- }
- int
- ospf_area_export_list_set (struct ospf *ospf,
- struct ospf_area *area, char *list_name)
- {
- struct access_list *list;
- list = access_list_lookup (AFI_IP, list_name);
- EXPORT_LIST (area) = list;
- if (EXPORT_NAME (area))
- free (EXPORT_NAME (area));
- EXPORT_NAME (area) = strdup (list_name);
- ospf_schedule_abr_task (ospf);
- return 1;
- }
- int
- ospf_area_export_list_unset (struct ospf *ospf, struct ospf_area * area)
- {
- EXPORT_LIST (area) = 0;
- if (EXPORT_NAME (area))
- free (EXPORT_NAME (area));
- EXPORT_NAME (area) = NULL;
- ospf_area_check_free (ospf, area->area_id);
-
- ospf_schedule_abr_task (ospf);
- return 1;
- }
- int
- ospf_area_import_list_set (struct ospf *ospf,
- struct ospf_area *area, char *name)
- {
- struct access_list *list;
- list = access_list_lookup (AFI_IP, name);
- IMPORT_LIST (area) = list;
- if (IMPORT_NAME (area))
- free (IMPORT_NAME (area));
- IMPORT_NAME (area) = strdup (name);
- ospf_schedule_abr_task (ospf);
- return 1;
- }
- int
- ospf_area_import_list_unset (struct ospf *ospf, struct ospf_area * area)
- {
- IMPORT_LIST (area) = 0;
- if (IMPORT_NAME (area))
- free (IMPORT_NAME (area));
- IMPORT_NAME (area) = NULL;
- ospf_area_check_free (ospf, area->area_id);
- ospf_schedule_abr_task (ospf);
- return 1;
- }
- int
- ospf_timers_spf_set (struct ospf *ospf, u_int32_t delay, u_int32_t hold)
- {
- ospf->spf_delay = delay;
- ospf->spf_holdtime = hold;
- return 1;
- }
- int
- ospf_timers_spf_unset (struct ospf *ospf)
- {
- ospf->spf_delay = OSPF_SPF_DELAY_DEFAULT;
- ospf->spf_holdtime = OSPF_SPF_HOLDTIME_DEFAULT;
- return 1;
- }
- int
- ospf_timers_refresh_set (struct ospf *ospf, int interval)
- {
- int time_left;
- if (ospf->lsa_refresh_interval == interval)
- return 1;
- time_left = ospf->lsa_refresh_interval -
- (time (NULL) - ospf->lsa_refresher_started);
-
- if (time_left > interval)
- {
- OSPF_TIMER_OFF (ospf->t_lsa_refresher);
- ospf->t_lsa_refresher =
- thread_add_timer (master, ospf_lsa_refresh_walker, ospf, interval);
- }
- ospf->lsa_refresh_interval = interval;
- return 1;
- }
- int
- ospf_timers_refresh_unset (struct ospf *ospf)
- {
- int time_left;
- time_left = ospf->lsa_refresh_interval -
- (time (NULL) - ospf->lsa_refresher_started);
- if (time_left > OSPF_LSA_REFRESH_INTERVAL_DEFAULT)
- {
- OSPF_TIMER_OFF (ospf->t_lsa_refresher);
- ospf->t_lsa_refresher =
- thread_add_timer (master, ospf_lsa_refresh_walker, ospf,
- OSPF_LSA_REFRESH_INTERVAL_DEFAULT);
- }
- ospf->lsa_refresh_interval = OSPF_LSA_REFRESH_INTERVAL_DEFAULT;
- return 1;
- }
- struct ospf_nbr_nbma *
- ospf_nbr_nbma_new ()
- {
- struct ospf_nbr_nbma *nbr_nbma;
- nbr_nbma = XMALLOC (MTYPE_OSPF_NEIGHBOR_STATIC,
- sizeof (struct ospf_nbr_nbma));
- memset (nbr_nbma, 0, sizeof (struct ospf_nbr_nbma));
- nbr_nbma->priority = OSPF_NEIGHBOR_PRIORITY_DEFAULT;
- nbr_nbma->v_poll = OSPF_POLL_INTERVAL_DEFAULT;
- return nbr_nbma;
- }
- void
- ospf_nbr_nbma_free (struct ospf_nbr_nbma *nbr_nbma)
- {
- XFREE (MTYPE_OSPF_NEIGHBOR_STATIC, nbr_nbma);
- }
- void
- ospf_nbr_nbma_delete (struct ospf *ospf, struct ospf_nbr_nbma *nbr_nbma)
- {
- struct route_node *rn;
- struct prefix_ipv4 p;
- p.family = AF_INET;
- p.prefix = nbr_nbma->addr;
- p.prefixlen = IPV4_MAX_BITLEN;
- rn = route_node_lookup (ospf->nbr_nbma, (struct prefix *)&p);
- if (rn)
- {
- ospf_nbr_nbma_free (rn->info);
- rn->info = NULL;
- route_unlock_node (rn);
- route_unlock_node (rn);
- }
- }
- void
- ospf_nbr_nbma_down (struct ospf_nbr_nbma *nbr_nbma)
- {
- OSPF_TIMER_OFF (nbr_nbma->t_poll);
- if (nbr_nbma->nbr)
- {
- nbr_nbma->nbr->nbr_nbma = NULL;
- OSPF_NSM_EVENT_EXECUTE (nbr_nbma->nbr, NSM_KillNbr);
- }
- if (nbr_nbma->oi)
- listnode_delete (nbr_nbma->oi->nbr_nbma, nbr_nbma);
- }
- void
- ospf_nbr_nbma_add (struct ospf_nbr_nbma *nbr_nbma,
- struct ospf_interface *oi)
- {
- struct ospf_neighbor *nbr;
- struct route_node *rn;
- struct prefix p;
- if (oi->type != OSPF_IFTYPE_NBMA)
- return;
- if (nbr_nbma->nbr != NULL)
- return;
- if (IPV4_ADDR_SAME (&oi->nbr_self->address.u.prefix4, &nbr_nbma->addr))
- return;
-
- nbr_nbma->oi = oi;
- listnode_add (oi->nbr_nbma, nbr_nbma);
- /* Get neighbor information from table. */
- p.family = AF_INET;
- p.prefixlen = IPV4_MAX_BITLEN;
- p.u.prefix4 = nbr_nbma->addr;
- rn = route_node_get (oi->nbrs, (struct prefix *)&p);
- if (rn->info)
- {
- nbr = rn->info;
- nbr->nbr_nbma = nbr_nbma;
- nbr_nbma->nbr = nbr;
- route_unlock_node (rn);
- }
- else
- {
- nbr = rn->info = ospf_nbr_new (oi);
- nbr->state = NSM_Down;
- nbr->src = nbr_nbma->addr;
- nbr->nbr_nbma = nbr_nbma;
- nbr->priority = nbr_nbma->priority;
- nbr->address = p;
- nbr_nbma->nbr = nbr;
- OSPF_NSM_EVENT_EXECUTE (nbr, NSM_Start);
- }
- }
- void
- ospf_nbr_nbma_if_update (struct ospf *ospf, struct ospf_interface *oi)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- struct route_node *rn;
- struct prefix_ipv4 p;
- if (oi->type != OSPF_IFTYPE_NBMA)
- return;
- for (rn = route_top (ospf->nbr_nbma); rn; rn = route_next (rn))
- if ((nbr_nbma = rn->info))
- if (nbr_nbma->oi == NULL && nbr_nbma->nbr == NULL)
- {
- p.family = AF_INET;
- p.prefix = nbr_nbma->addr;
- p.prefixlen = IPV4_MAX_BITLEN;
- if (prefix_match (oi->address, (struct prefix *)&p))
- ospf_nbr_nbma_add (nbr_nbma, oi);
- }
- }
- struct ospf_nbr_nbma *
- ospf_nbr_nbma_lookup (struct ospf *ospf, struct in_addr nbr_addr)
- {
- struct route_node *rn;
- struct prefix_ipv4 p;
- p.family = AF_INET;
- p.prefix = nbr_addr;
- p.prefixlen = IPV4_MAX_BITLEN;
- rn = route_node_lookup (ospf->nbr_nbma, (struct prefix *)&p);
- if (rn)
- {
- route_unlock_node (rn);
- return rn->info;
- }
- return NULL;
- }
- int
- ospf_nbr_nbma_set (struct ospf *ospf, struct in_addr nbr_addr)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- struct ospf_interface *oi;
- struct prefix_ipv4 p;
- struct route_node *rn;
- listnode node;
- nbr_nbma = ospf_nbr_nbma_lookup (ospf, nbr_addr);
- if (nbr_nbma)
- return 0;
- nbr_nbma = ospf_nbr_nbma_new ();
- nbr_nbma->addr = nbr_addr;
- p.family = AF_INET;
- p.prefix = nbr_addr;
- p.prefixlen = IPV4_MAX_BITLEN;
- rn = route_node_get (ospf->nbr_nbma, (struct prefix *)&p);
- rn->info = nbr_nbma;
- for (node = listhead (ospf->oiflist); node; nextnode (node))
- {
- oi = getdata (node);
- if (oi->type == OSPF_IFTYPE_NBMA)
- if (prefix_match (oi->address, (struct prefix *)&p))
- {
- ospf_nbr_nbma_add (nbr_nbma, oi);
- break;
- }
- }
- return 1;
- }
- int
- ospf_nbr_nbma_unset (struct ospf *ospf, struct in_addr nbr_addr)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- nbr_nbma = ospf_nbr_nbma_lookup (ospf, nbr_addr);
- if (nbr_nbma == NULL)
- return 0;
- ospf_nbr_nbma_down (nbr_nbma);
- ospf_nbr_nbma_delete (ospf, nbr_nbma);
- return 1;
- }
- int
- ospf_nbr_nbma_priority_set (struct ospf *ospf, struct in_addr nbr_addr,
- u_char priority)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- nbr_nbma = ospf_nbr_nbma_lookup (ospf, nbr_addr);
- if (nbr_nbma == NULL)
- return 0;
- if (nbr_nbma->priority != priority)
- nbr_nbma->priority = priority;
- return 1;
- }
- int
- ospf_nbr_nbma_priority_unset (struct ospf *ospf, struct in_addr nbr_addr)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- nbr_nbma = ospf_nbr_nbma_lookup (ospf, nbr_addr);
- if (nbr_nbma == NULL)
- return 0;
- if (nbr_nbma != OSPF_NEIGHBOR_PRIORITY_DEFAULT)
- nbr_nbma->priority = OSPF_NEIGHBOR_PRIORITY_DEFAULT;
- return 1;
- }
- int
- ospf_nbr_nbma_poll_interval_set (struct ospf *ospf, struct in_addr nbr_addr,
- int interval)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- nbr_nbma = ospf_nbr_nbma_lookup (ospf, nbr_addr);
- if (nbr_nbma == NULL)
- return 0;
- if (nbr_nbma->v_poll != interval)
- {
- nbr_nbma->v_poll = interval;
- if (nbr_nbma->oi && ospf_if_is_up (nbr_nbma->oi))
- {
- OSPF_TIMER_OFF (nbr_nbma->t_poll);
- OSPF_POLL_TIMER_ON (nbr_nbma->t_poll, ospf_poll_timer,
- nbr_nbma->v_poll);
- }
- }
- return 1;
- }
- int
- ospf_nbr_nbma_poll_interval_unset (struct ospf *ospf, struct in_addr addr)
- {
- struct ospf_nbr_nbma *nbr_nbma;
- nbr_nbma = ospf_nbr_nbma_lookup (ospf, addr);
- if (nbr_nbma == NULL)
- return 0;
- if (nbr_nbma->v_poll != OSPF_POLL_INTERVAL_DEFAULT)
- nbr_nbma->v_poll = OSPF_POLL_INTERVAL_DEFAULT;
- return 1;
- }
- void
- ospf_prefix_list_update (struct prefix_list *plist)
- {
- struct ospf *ospf;
- struct ospf_area *area;
- listnode node;
- int abr_inv = 0;
- /* If OSPF instatnce does not exist, return right now. */
- ospf = ospf_lookup ();
- if (ospf == NULL)
- return;
- /* Update Area prefix-list. */
- for (node = listhead (ospf->areas); node; nextnode (node))
- {
- area = getdata (node);
- /* Update filter-list in. */
- if (PREFIX_NAME_IN (area))
- if (strcmp (PREFIX_NAME_IN (area), plist->name) == 0)
- {
- PREFIX_LIST_IN (area) =
- prefix_list_lookup (AFI_IP, PREFIX_NAME_IN (area));
- abr_inv++;
- }
- /* Update filter-list out. */
- if (PREFIX_NAME_OUT (area))
- if (strcmp (PREFIX_NAME_OUT (area), plist->name) == 0)
- {
- PREFIX_LIST_IN (area) =
- prefix_list_lookup (AFI_IP, PREFIX_NAME_OUT (area));
- abr_inv++;
- }
- }
- /* Schedule ABR tasks. */
- if (IS_OSPF_ABR (ospf) && abr_inv)
- ospf_schedule_abr_task (ospf);
- }
- void
- ospf_master_init ()
- {
- memset (&ospf_master, 0, sizeof (struct ospf_master));
- om = &ospf_master;
- om->ospf = list_new ();
- om->master = thread_master_create ();
- om->start_time = time (NULL);
- }
- void
- ospf_init ()
- {
- prefix_list_add_hook (ospf_prefix_list_update);
- prefix_list_delete_hook (ospf_prefix_list_update);
- }