+// SPDX-License-Identifier: GPL-2.0-or-later
/* OSPF SPF calculation.
* Copyright (C) 1999, 2000 Kunihiro Ishiguro, 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 this program; see the file COPYING; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <zebra.h>
#include "monotime.h"
-#include "thread.h"
+#include "frrevent.h"
#include "memory.h"
#include "hash.h"
#include "linklist.h"
#include "ospfd/ospf_apiserver.h"
#endif
-#include "ospfd/ospf_orr.h"
-
/* Variables to ensure a SPF scheduled log message is printed only once */
static unsigned int spf_reason_flags = 0;
vertex_list);
break;
- default:
+ case OSPF_TI_LFA_UNDEFINED_PROTECTION:
/* do nothing */
break;
}
if (v->type != OSPF_VERTEX_ROUTER)
ospf_intra_add_transit(new_table, v, area);
else {
- ospf_intra_add_router(new_rtrs, v, area, false);
+ if (new_rtrs)
+ ospf_intra_add_router(new_rtrs, v, area, false);
if (all_rtrs)
ospf_intra_add_router(all_rtrs, v, area, true);
}
all_rtrs, new_rtrs);
}
-/* Print Reason for SPF calculation */
-static void ospf_spf_calculation_reason2str(char *rbuf, size_t len)
-{
- rbuf[0] = '\0';
- if (spf_reason_flags) {
- if (spf_reason_flags & (1 << SPF_FLAG_ROUTER_LSA_INSTALL))
- strlcat(rbuf, "R, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_NETWORK_LSA_INSTALL))
- strlcat(rbuf, "N, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_SUMMARY_LSA_INSTALL))
- strlcat(rbuf, "S, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_ASBR_SUMMARY_LSA_INSTALL))
- strlcat(rbuf, "AS, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_ABR_STATUS_CHANGE))
- strlcat(rbuf, "ABR, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_ASBR_STATUS_CHANGE))
- strlcat(rbuf, "ASBR, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_MAXAGE))
- strlcat(rbuf, "M, ", len);
- if (spf_reason_flags & (1 << SPF_FLAG_ORR_ROOT_CHANGE))
- strlcat(rbuf, "ORR, ", len);
-
- size_t rbuflen = strlen(rbuf);
- if (rbuflen >= 2)
- rbuf[rbuflen - 2] = '\0'; /* skip the last ", " */
- else
- rbuf[0] = '\0';
- }
-}
-
/* Worker for SPF calculation scheduler. */
-static void ospf_spf_calculate_schedule_worker(struct thread *thread)
+static void ospf_spf_calculate_schedule_worker(struct event *thread)
{
- struct ospf *ospf = THREAD_ARG(thread);
+ struct ospf *ospf = EVENT_ARG(thread);
struct route_table *new_table, *new_rtrs;
struct route_table *all_rtrs = NULL;
struct timeval start_time, spf_start_time;
ospf_ase_calculate_schedule(ospf);
ospf_ase_calculate_timer_add(ospf);
- ospf_orr_spf_calculate_schedule(ospf);
-
if (IS_DEBUG_OSPF_EVENT)
zlog_debug(
"%s: ospf install new route, vrf %s id %u new_table count %lu",
#ifdef SUPPORT_OSPF_API
ospf_apiserver_notify_reachable(ospf->oall_rtrs, ospf->all_rtrs);
#endif
+
/* Free old ABR/ASBR routing table */
if (ospf->old_rtrs) {
ospf_rtrs_free(ospf->old_rtrs);
total_spf_time =
monotime_since(&spf_start_time, &ospf->ts_spf_duration);
- ospf_spf_calculation_reason2str(rbuf, sizeof(rbuf));
+ rbuf[0] = '\0';
+ if (spf_reason_flags) {
+ if (spf_reason_flags & (1 << SPF_FLAG_ROUTER_LSA_INSTALL))
+ strlcat(rbuf, "R, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_NETWORK_LSA_INSTALL))
+ strlcat(rbuf, "N, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_SUMMARY_LSA_INSTALL))
+ strlcat(rbuf, "S, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_ASBR_SUMMARY_LSA_INSTALL))
+ strlcat(rbuf, "AS, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_ABR_STATUS_CHANGE))
+ strlcat(rbuf, "ABR, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_ASBR_STATUS_CHANGE))
+ strlcat(rbuf, "ASBR, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_MAXAGE))
+ strlcat(rbuf, "M, ", sizeof(rbuf));
+ if (spf_reason_flags & (1 << SPF_FLAG_GR_FINISH))
+ strlcat(rbuf, "GR, ", sizeof(rbuf));
+
+ size_t rbuflen = strlen(rbuf);
+ if (rbuflen >= 2)
+ rbuf[rbuflen - 2] = '\0'; /* skip the last ", " */
+ else
+ rbuf[0] = '\0';
+ }
if (IS_DEBUG_OSPF_EVENT) {
zlog_info("SPF Processing Time(usecs): %ld", total_spf_time);
ospf_clear_spf_reason_flags();
}
-/* Worker for ORR SPF calculation scheduler. */
-void ospf_orr_spf_calculate_schedule_worker(struct thread *thread)
-{
- afi_t afi;
- safi_t safi;
- struct ospf *ospf = THREAD_ARG(thread);
- struct route_table *new_table, *new_rtrs;
- struct route_table *all_rtrs = NULL;
- struct timeval start_time, spf_start_time;
- unsigned long ia_time, rt_time;
- unsigned long abr_time, total_spf_time, spf_time;
- struct listnode *rnode;
- struct list *orr_root_list;
- struct orr_root *root;
- char rbuf[32]; /* reason_buf */
-
- ospf_orr_debug("%s: SPF: Timer (SPF calculation expire)", __func__);
-
- ospf->t_orr_calc = NULL;
-
- /* Execute SPF for each ORR Root node */
- FOREACH_AFI_SAFI (afi, safi) {
- orr_root_list = ospf->orr_root[afi][safi];
- if (!orr_root_list)
- continue;
- for (ALL_LIST_ELEMENTS_RO(orr_root_list, rnode, root)) {
- if (!root || !root->router_lsa_rcvd)
- continue;
- ospf_orr_debug(
- "%s: For %s %s, MPLS TE Router address %pI4 advertised by %pI4",
- __func__, afi2str(afi), safi2str(safi),
- &root->router_id, &root->adv_router);
-
- ospf_vl_unapprove(ospf);
-
- /*
- * Execute SPF for each area including backbone, see RFC
- * 2328 16.1.
- */
- monotime(&spf_start_time);
- new_table = route_table_init(); /* routing table */
- new_rtrs =
- route_table_init(); /* ABR/ASBR routing table */
-
- /*
- * If we have opaque enabled then track all router
- * reachability
- */
- if (CHECK_FLAG(ospf->opaque,
- OPAQUE_OPERATION_READY_BIT))
- all_rtrs = route_table_init();
- ospf_orr_spf_calculate_areas(ospf, new_table, all_rtrs,
- new_rtrs,
- root->router_lsa_rcvd);
-
- spf_time = monotime_since(&spf_start_time, NULL);
-
- ospf_vl_shut_unapproved(ospf);
-
- /* Calculate inter-area routes, see RFC 2328 16.2. */
- monotime(&start_time);
- ospf_ia_routing(ospf, new_table, new_rtrs);
- ia_time = monotime_since(&start_time, NULL);
-
- /*
- * REVISIT :
- * Pruning of unreachable networks, routers skipped.
- */
-
- /* Note: RFC 2328 16.3. is apparently missing. */
- /* Calculate AS external routes, see RFC 2328 16.4.
- * There is a dedicated routing table for external
- * routes which is not handled here directly
- */
- ospf_ase_calculate_schedule(ospf);
- ospf_ase_calculate_timer_add(ospf);
-
- ospf_orr_debug(
- "%s: ospf install new route, vrf %s id %u new_table count %lu",
- __func__, ospf_vrf_id_to_name(ospf->vrf_id),
- ospf->vrf_id, new_table->count);
-
- /* Update routing table. */
- monotime(&start_time);
- ospf_orr_route_install(root, new_table, ospf->instance);
- rt_time = monotime_since(&start_time, NULL);
-
- /*
- * REVISIT :
- * Freeing up and Updating old all routers routing table
- * skipped.
- */
-
- /* Free old ABR/ASBR routing table */
- if (root->old_rtrs)
- /* ospf_route_delete (ospf->old_rtrs); */
- ospf_rtrs_free(root->old_rtrs);
-
- /* Update ABR/ASBR routing table */
- root->old_rtrs = root->new_rtrs;
- root->new_rtrs = new_rtrs;
-
- /*
- * ABRs may require additional changes, see RFC
- * 2328 16.7.
- */
- monotime(&start_time);
- if (IS_OSPF_ABR(ospf)) {
- if (ospf->anyNSSA)
- ospf_abr_nssa_check_status(ospf);
- ospf_abr_task(ospf);
- }
- abr_time = monotime_since(&start_time, NULL);
-
- /* Schedule Segment Routing update */
- ospf_sr_update_task(ospf);
-
- total_spf_time = monotime_since(&spf_start_time,
- &ospf->ts_spf_duration);
-
- ospf_spf_calculation_reason2str(rbuf, sizeof(rbuf));
-
- if (IS_DEBUG_OSPF_ORR) {
- zlog_info("SPF Processing Time(usecs): %ld",
- total_spf_time);
- zlog_info(" SPF Time: %ld",
- spf_time);
- zlog_info(" InterArea: %ld", ia_time);
- zlog_info(" RouteInstall: %ld", rt_time);
- if (IS_OSPF_ABR(ospf))
- zlog_info(
- " ABR: %ld (%d areas)",
- abr_time, ospf->areas->count);
- zlog_info("Reason(s) for SPF: %s", rbuf);
- }
- } /* ALL_LIST_ELEMENTS_RO() */
- } /* FOREACH_AFI_SAFI() */
-}
-
/*
* Add schedule for SPF calculation. To avoid frequenst SPF calc, we set timer
* for SPF calc.
zlog_debug("SPF: calculation timer delay = %ld msec", delay);
ospf->t_spf_calc = NULL;
-
- thread_add_timer_msec(master, ospf_spf_calculate_schedule_worker, ospf,
- delay, &ospf->t_spf_calc);
+ event_add_timer_msec(master, ospf_spf_calculate_schedule_worker, ospf,
+ delay, &ospf->t_spf_calc);
}
/* Restart OSPF SPF algorithm*/
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