#include "ospfd/ospf_flood.h"
#include "ospfd/ospf_abr.h"
#include "ospfd/ospf_bfd.h"
+#include "ospfd/ospf_errors.h"
DEFINE_HOOK(ospf_nsm_change,
- (struct ospf_neighbor *on, int state, int oldstate),
- (on, state, oldstate))
+ (struct ospf_neighbor * on, int state, int oldstate),
+ (on, state, oldstate))
-static void nsm_clear_adj (struct ospf_neighbor *);
+static void nsm_clear_adj(struct ospf_neighbor *);
/* OSPF NSM Timer functions. */
-static int
-ospf_inactivity_timer (struct thread *thread)
+static int ospf_inactivity_timer(struct thread *thread)
{
- struct ospf_neighbor *nbr;
+ struct ospf_neighbor *nbr;
- nbr = THREAD_ARG (thread);
- nbr->t_inactivity = NULL;
+ nbr = THREAD_ARG(thread);
+ nbr->t_inactivity = NULL;
- if (IS_DEBUG_OSPF (nsm, NSM_TIMERS))
- zlog_debug("NSM[%s:%s]: Timer (Inactivity timer expire)",
- IF_NAME(nbr->oi), inet_ntoa(nbr->router_id));
+ if (IS_DEBUG_OSPF(nsm, NSM_TIMERS))
+ zlog_debug("NSM[%s:%s]: Timer (Inactivity timer expire)",
+ IF_NAME(nbr->oi), inet_ntoa(nbr->router_id));
- OSPF_NSM_EVENT_SCHEDULE (nbr, NSM_InactivityTimer);
+ OSPF_NSM_EVENT_SCHEDULE(nbr, NSM_InactivityTimer);
- return 0;
+ return 0;
}
-static int
-ospf_db_desc_timer (struct thread *thread)
+static int ospf_db_desc_timer(struct thread *thread)
{
- struct ospf_neighbor *nbr;
+ struct ospf_neighbor *nbr;
- nbr = THREAD_ARG (thread);
- nbr->t_db_desc = NULL;
+ nbr = THREAD_ARG(thread);
+ nbr->t_db_desc = NULL;
- if (IS_DEBUG_OSPF (nsm, NSM_TIMERS))
- zlog_debug("NSM[%s:%s]: Timer (DD Retransmit timer expire)",
- IF_NAME(nbr->oi), inet_ntoa(nbr->src));
+ if (IS_DEBUG_OSPF(nsm, NSM_TIMERS))
+ zlog_debug("NSM[%s:%s]: Timer (DD Retransmit timer expire)",
+ IF_NAME(nbr->oi), inet_ntoa(nbr->src));
- /* resent last send DD packet. */
- assert (nbr->last_send);
- ospf_db_desc_resend (nbr);
+ /* resent last send DD packet. */
+ assert(nbr->last_send);
+ ospf_db_desc_resend(nbr);
- /* DD Retransmit timer set. */
- OSPF_NSM_TIMER_ON (nbr->t_db_desc, ospf_db_desc_timer, nbr->v_db_desc);
+ /* DD Retransmit timer set. */
+ OSPF_NSM_TIMER_ON(nbr->t_db_desc, ospf_db_desc_timer, nbr->v_db_desc);
- return 0;
+ return 0;
}
-/* Hook function called after ospf NSM event is occured.
+/* Hook function called after ospf NSM event is occurred.
*
* Set/clear any timers whose condition is implicit to the neighbour
* state. There may be other timers which are set/unset according to other
* We rely on this function to properly clear timers in lower states,
* particularly before deleting a neighbour.
*/
-static void
-nsm_timer_set (struct ospf_neighbor *nbr)
+static void nsm_timer_set(struct ospf_neighbor *nbr)
{
- switch (nbr->state)
- {
- case NSM_Deleted:
- case NSM_Down:
- OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
- OSPF_NSM_TIMER_OFF (nbr->t_hello_reply);
- case NSM_Attempt:
- case NSM_Init:
- case NSM_TwoWay:
- OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
- OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
- OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
- break;
- case NSM_ExStart:
- OSPF_NSM_TIMER_ON (nbr->t_db_desc, ospf_db_desc_timer, nbr->v_db_desc);
- OSPF_NSM_TIMER_OFF (nbr->t_ls_upd);
- OSPF_NSM_TIMER_OFF (nbr->t_ls_req);
- break;
- case NSM_Exchange:
- OSPF_NSM_TIMER_ON (nbr->t_ls_upd, ospf_ls_upd_timer, nbr->v_ls_upd);
- if (!IS_SET_DD_MS (nbr->dd_flags))
- OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
- break;
- case NSM_Loading:
- case NSM_Full:
- default:
- OSPF_NSM_TIMER_OFF (nbr->t_db_desc);
- break;
- }
+ switch (nbr->state) {
+ case NSM_Deleted:
+ case NSM_Down:
+ OSPF_NSM_TIMER_OFF(nbr->t_inactivity);
+ OSPF_NSM_TIMER_OFF(nbr->t_hello_reply);
+ /* fallthru */
+ case NSM_Attempt:
+ case NSM_Init:
+ case NSM_TwoWay:
+ OSPF_NSM_TIMER_OFF(nbr->t_db_desc);
+ OSPF_NSM_TIMER_OFF(nbr->t_ls_upd);
+ OSPF_NSM_TIMER_OFF(nbr->t_ls_req);
+ break;
+ case NSM_ExStart:
+ OSPF_NSM_TIMER_ON(nbr->t_db_desc, ospf_db_desc_timer,
+ nbr->v_db_desc);
+ OSPF_NSM_TIMER_OFF(nbr->t_ls_upd);
+ OSPF_NSM_TIMER_OFF(nbr->t_ls_req);
+ break;
+ case NSM_Exchange:
+ OSPF_NSM_TIMER_ON(nbr->t_ls_upd, ospf_ls_upd_timer,
+ nbr->v_ls_upd);
+ if (!IS_SET_DD_MS(nbr->dd_flags))
+ OSPF_NSM_TIMER_OFF(nbr->t_db_desc);
+ break;
+ case NSM_Loading:
+ case NSM_Full:
+ default:
+ OSPF_NSM_TIMER_OFF(nbr->t_db_desc);
+ break;
+ }
}
/* 10.4 of RFC2328, indicate whether an adjacency is appropriate with
* the given neighbour
*/
-static int
-nsm_should_adj (struct ospf_neighbor *nbr)
+static int nsm_should_adj(struct ospf_neighbor *nbr)
{
- struct ospf_interface *oi = nbr->oi;
-
- /* These network types must always form adjacencies. */
- if (oi->type == OSPF_IFTYPE_POINTOPOINT
- || oi->type == OSPF_IFTYPE_POINTOMULTIPOINT
- || oi->type == OSPF_IFTYPE_VIRTUALLINK
- /* Router itself is the DRouter or the BDRouter. */
- || IPV4_ADDR_SAME (&oi->address->u.prefix4, &DR (oi))
- || IPV4_ADDR_SAME (&oi->address->u.prefix4, &BDR (oi))
- /* Neighboring Router is the DRouter or the BDRouter. */
- || IPV4_ADDR_SAME (&nbr->address.u.prefix4, &DR (oi))
- || IPV4_ADDR_SAME (&nbr->address.u.prefix4, &BDR (oi)))
- return 1;
-
- return 0;
+ struct ospf_interface *oi = nbr->oi;
+
+ /* These network types must always form adjacencies. */
+ if (oi->type == OSPF_IFTYPE_POINTOPOINT
+ || oi->type == OSPF_IFTYPE_POINTOMULTIPOINT
+ || oi->type == OSPF_IFTYPE_VIRTUALLINK
+ /* Router itself is the DRouter or the BDRouter. */
+ || IPV4_ADDR_SAME(&oi->address->u.prefix4, &DR(oi))
+ || IPV4_ADDR_SAME(&oi->address->u.prefix4, &BDR(oi))
+ /* Neighboring Router is the DRouter or the BDRouter. */
+ || IPV4_ADDR_SAME(&nbr->address.u.prefix4, &DR(oi))
+ || IPV4_ADDR_SAME(&nbr->address.u.prefix4, &BDR(oi)))
+ return 1;
+
+ return 0;
}
/* OSPF NSM functions. */
-static int
-nsm_packet_received (struct ospf_neighbor *nbr)
+static int nsm_packet_received(struct ospf_neighbor *nbr)
{
- /* Start or Restart Inactivity Timer. */
- OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
-
- OSPF_NSM_TIMER_ON (nbr->t_inactivity, ospf_inactivity_timer,
- nbr->v_inactivity);
+ /* Start or Restart Inactivity Timer. */
+ OSPF_NSM_TIMER_OFF(nbr->t_inactivity);
+
+ OSPF_NSM_TIMER_ON(nbr->t_inactivity, ospf_inactivity_timer,
+ nbr->v_inactivity);
- if (nbr->oi->type == OSPF_IFTYPE_NBMA && nbr->nbr_nbma)
- OSPF_POLL_TIMER_OFF (nbr->nbr_nbma->t_poll);
+ if (nbr->oi->type == OSPF_IFTYPE_NBMA && nbr->nbr_nbma)
+ OSPF_POLL_TIMER_OFF(nbr->nbr_nbma->t_poll);
- /* Send proactive ARP requests */
- if (nbr->state < NSM_Exchange)
- ospf_proactively_arp (nbr);
+ /* Send proactive ARP requests */
+ if (nbr->state < NSM_Exchange)
+ ospf_proactively_arp(nbr);
- return 0;
+ return 0;
}
-static int
-nsm_start (struct ospf_neighbor *nbr)
+static int nsm_start(struct ospf_neighbor *nbr)
{
- if (nbr->nbr_nbma)
- OSPF_POLL_TIMER_OFF (nbr->nbr_nbma->t_poll);
+ if (nbr->nbr_nbma)
+ OSPF_POLL_TIMER_OFF(nbr->nbr_nbma->t_poll);
- OSPF_NSM_TIMER_OFF (nbr->t_inactivity);
-
- OSPF_NSM_TIMER_ON (nbr->t_inactivity, ospf_inactivity_timer,
- nbr->v_inactivity);
+ OSPF_NSM_TIMER_OFF(nbr->t_inactivity);
- /* Send proactive ARP requests */
- ospf_proactively_arp (nbr);
+ OSPF_NSM_TIMER_ON(nbr->t_inactivity, ospf_inactivity_timer,
+ nbr->v_inactivity);
- return 0;
+ /* Send proactive ARP requests */
+ ospf_proactively_arp(nbr);
+
+ return 0;
}
-static int
-nsm_twoway_received (struct ospf_neighbor *nbr)
+static int nsm_twoway_received(struct ospf_neighbor *nbr)
{
- int adj = nsm_should_adj (nbr);
+ int adj = nsm_should_adj(nbr);
- /* Send proactive ARP requests */
- if (adj)
- ospf_proactively_arp (nbr);
+ /* Send proactive ARP requests */
+ if (adj)
+ ospf_proactively_arp(nbr);
- return (adj ? NSM_ExStart : NSM_TwoWay);
+ return (adj ? NSM_ExStart : NSM_TwoWay);
}
-int
-ospf_db_summary_count (struct ospf_neighbor *nbr)
+int ospf_db_summary_count(struct ospf_neighbor *nbr)
{
- return ospf_lsdb_count_all (&nbr->db_sum);
+ return ospf_lsdb_count_all(&nbr->db_sum);
}
-int
-ospf_db_summary_isempty (struct ospf_neighbor *nbr)
+int ospf_db_summary_isempty(struct ospf_neighbor *nbr)
{
- return ospf_lsdb_isempty (&nbr->db_sum);
+ return ospf_lsdb_isempty(&nbr->db_sum);
}
-static int
-ospf_db_summary_add (struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
+static int ospf_db_summary_add(struct ospf_neighbor *nbr, struct ospf_lsa *lsa)
{
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- /* Exclude type-9 LSAs that does not have the same "oi" with "nbr". */
- if (nbr->oi && ospf_if_exists (lsa->oi) != nbr->oi)
- return 0;
- break;
- case OSPF_OPAQUE_AREA_LSA:
- /*
- * It is assured by the caller function "nsm_negotiation_done()"
- * that every given LSA belongs to the same area with "nbr".
- */
- break;
- case OSPF_OPAQUE_AS_LSA:
- default:
- break;
- }
-
- /* Stay away from any Local Translated Type-7 LSAs */
- if (CHECK_FLAG (lsa->flags, OSPF_LSA_LOCAL_XLT))
- return 0;
-
- if (IS_LSA_MAXAGE (lsa))
- ospf_ls_retransmit_add (nbr, lsa);
- else
- ospf_lsdb_add (&nbr->db_sum, lsa);
-
- return 0;
+ switch (lsa->data->type) {
+ case OSPF_OPAQUE_LINK_LSA:
+ /* Exclude type-9 LSAs that does not have the same "oi" with
+ * "nbr". */
+ if (nbr->oi && ospf_if_exists(lsa->oi) != nbr->oi)
+ return 0;
+ break;
+ case OSPF_OPAQUE_AREA_LSA:
+ /*
+ * It is assured by the caller function "nsm_negotiation_done()"
+ * that every given LSA belongs to the same area with "nbr".
+ */
+ break;
+ case OSPF_OPAQUE_AS_LSA:
+ default:
+ break;
+ }
+
+ /* Stay away from any Local Translated Type-7 LSAs */
+ if (CHECK_FLAG(lsa->flags, OSPF_LSA_LOCAL_XLT))
+ return 0;
+
+ if (IS_LSA_MAXAGE(lsa))
+ ospf_ls_retransmit_add(nbr, lsa);
+ else
+ ospf_lsdb_add(&nbr->db_sum, lsa);
+
+ return 0;
}
-void
-ospf_db_summary_clear (struct ospf_neighbor *nbr)
+void ospf_db_summary_clear(struct ospf_neighbor *nbr)
{
- struct ospf_lsdb *lsdb;
- int i;
-
- lsdb = &nbr->db_sum;
- for (i = OSPF_MIN_LSA; i < OSPF_MAX_LSA; i++)
- {
- struct route_table *table = lsdb->type[i].db;
- struct route_node *rn;
-
- for (rn = route_top (table); rn; rn = route_next (rn))
- if (rn->info)
- ospf_lsdb_delete (&nbr->db_sum, rn->info);
- }
-}
+ struct ospf_lsdb *lsdb;
+ int i;
+ lsdb = &nbr->db_sum;
+ for (i = OSPF_MIN_LSA; i < OSPF_MAX_LSA; i++) {
+ struct route_table *table = lsdb->type[i].db;
+ struct route_node *rn;
+
+ for (rn = route_top(table); rn; rn = route_next(rn))
+ if (rn->info)
+ ospf_lsdb_delete(&nbr->db_sum, rn->info);
+ }
+}
/* The area link state database consists of the router-LSAs,
AS-external-LSAs are omitted from a virtual neighbor's Database
summary list. AS-external-LSAs are omitted from the Database
summary list if the area has been configured as a stub. */
-static int
-nsm_negotiation_done (struct ospf_neighbor *nbr)
+static int nsm_negotiation_done(struct ospf_neighbor *nbr)
{
- struct ospf_area *area = nbr->oi->area;
- struct ospf_lsa *lsa;
- struct route_node *rn;
-
- /* Send proactive ARP requests */
- ospf_proactively_arp (nbr);
-
- LSDB_LOOP (ROUTER_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
- LSDB_LOOP (NETWORK_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
- LSDB_LOOP (SUMMARY_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
- LSDB_LOOP (ASBR_SUMMARY_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
-
- /* Process only if the neighbor is opaque capable. */
- if (CHECK_FLAG (nbr->options, OSPF_OPTION_O))
- {
- LSDB_LOOP (OPAQUE_LINK_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
- LSDB_LOOP (OPAQUE_AREA_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
- }
-
- if (CHECK_FLAG (nbr->options, OSPF_OPTION_NP))
- {
- LSDB_LOOP (NSSA_LSDB (area), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
- }
-
- if (nbr->oi->type != OSPF_IFTYPE_VIRTUALLINK
- && area->external_routing == OSPF_AREA_DEFAULT)
- LSDB_LOOP (EXTERNAL_LSDB (nbr->oi->ospf), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
-
- if (CHECK_FLAG (nbr->options, OSPF_OPTION_O)
- && (nbr->oi->type != OSPF_IFTYPE_VIRTUALLINK
- && area->external_routing == OSPF_AREA_DEFAULT))
- LSDB_LOOP (OPAQUE_AS_LSDB (nbr->oi->ospf), rn, lsa)
- ospf_db_summary_add (nbr, lsa);
-
- return 0;
+ struct ospf_area *area = nbr->oi->area;
+ struct ospf_lsa *lsa;
+ struct route_node *rn;
+
+ /* Send proactive ARP requests */
+ ospf_proactively_arp(nbr);
+
+ LSDB_LOOP (ROUTER_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+ LSDB_LOOP (NETWORK_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+ LSDB_LOOP (SUMMARY_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+ LSDB_LOOP (ASBR_SUMMARY_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+
+ /* Process only if the neighbor is opaque capable. */
+ if (CHECK_FLAG(nbr->options, OSPF_OPTION_O)) {
+ LSDB_LOOP (OPAQUE_LINK_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+ LSDB_LOOP (OPAQUE_AREA_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+ }
+
+ if (CHECK_FLAG(nbr->options, OSPF_OPTION_NP)) {
+ LSDB_LOOP (NSSA_LSDB(area), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+ }
+
+ if (nbr->oi->type != OSPF_IFTYPE_VIRTUALLINK
+ && area->external_routing == OSPF_AREA_DEFAULT)
+ LSDB_LOOP (EXTERNAL_LSDB(nbr->oi->ospf), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+
+ if (CHECK_FLAG(nbr->options, OSPF_OPTION_O)
+ && (nbr->oi->type != OSPF_IFTYPE_VIRTUALLINK
+ && area->external_routing == OSPF_AREA_DEFAULT))
+ LSDB_LOOP (OPAQUE_AS_LSDB(nbr->oi->ospf), rn, lsa)
+ ospf_db_summary_add(nbr, lsa);
+
+ return 0;
}
-static int
-nsm_exchange_done (struct ospf_neighbor *nbr)
+static int nsm_exchange_done(struct ospf_neighbor *nbr)
{
- if (ospf_ls_request_isempty (nbr))
- return NSM_Full;
+ if (ospf_ls_request_isempty(nbr))
+ return NSM_Full;
- /* Send Link State Request. */
- if (nbr->t_ls_req == NULL)
- ospf_ls_req_send (nbr);
+ /* Send Link State Request. */
+ if (nbr->t_ls_req == NULL)
+ ospf_ls_req_send(nbr);
- return NSM_Loading;
+ return NSM_Loading;
}
-static int
-nsm_adj_ok (struct ospf_neighbor *nbr)
+static int nsm_adj_ok(struct ospf_neighbor *nbr)
{
- int next_state = nbr->state;
- int adj = nsm_should_adj (nbr);
+ int next_state = nbr->state;
+ int adj = nsm_should_adj(nbr);
- if (nbr->state == NSM_TwoWay && adj == 1)
- {
- next_state = NSM_ExStart;
+ if (nbr->state == NSM_TwoWay && adj == 1) {
+ next_state = NSM_ExStart;
- /* Send proactive ARP requests */
- ospf_proactively_arp (nbr);
- }
- else if (nbr->state >= NSM_ExStart && adj == 0)
- next_state = NSM_TwoWay;
+ /* Send proactive ARP requests */
+ ospf_proactively_arp(nbr);
+ } else if (nbr->state >= NSM_ExStart && adj == 0)
+ next_state = NSM_TwoWay;
- return next_state;
+ return next_state;
}
/* Clear adjacency related state for a neighbour, intended where nbr
* transitions from > ExStart (i.e. a Full or forming adjacency)
* to <= ExStart.
*/
-static void
-nsm_clear_adj (struct ospf_neighbor *nbr)
+static void nsm_clear_adj(struct ospf_neighbor *nbr)
{
- /* Clear Database Summary list. */
- if (!ospf_db_summary_isempty (nbr))
- ospf_db_summary_clear (nbr);
+ /* Clear Database Summary list. */
+ if (!ospf_db_summary_isempty(nbr))
+ ospf_db_summary_clear(nbr);
- /* Clear Link State Request list. */
- if (!ospf_ls_request_isempty (nbr))
- ospf_ls_request_delete_all (nbr);
+ /* Clear Link State Request list. */
+ if (!ospf_ls_request_isempty(nbr))
+ ospf_ls_request_delete_all(nbr);
- /* Clear Link State Retransmission list. */
- if (!ospf_ls_retransmit_isempty (nbr))
- ospf_ls_retransmit_clear (nbr);
+ /* Clear Link State Retransmission list. */
+ if (!ospf_ls_retransmit_isempty(nbr))
+ ospf_ls_retransmit_clear(nbr);
- if (CHECK_FLAG (nbr->options, OSPF_OPTION_O))
- UNSET_FLAG (nbr->options, OSPF_OPTION_O);
+ if (CHECK_FLAG(nbr->options, OSPF_OPTION_O))
+ UNSET_FLAG(nbr->options, OSPF_OPTION_O);
}
-static int
-nsm_kill_nbr (struct ospf_neighbor *nbr)
+static int nsm_kill_nbr(struct ospf_neighbor *nbr)
{
- /* killing nbr_self is invalid */
- if (nbr == nbr->oi->nbr_self)
- {
- assert (nbr != nbr->oi->nbr_self);
- return 0;
- }
-
- if (nbr->oi->type == OSPF_IFTYPE_NBMA && nbr->nbr_nbma != NULL)
- {
- struct ospf_nbr_nbma *nbr_nbma = nbr->nbr_nbma;
-
- nbr_nbma->nbr = NULL;
- nbr_nbma->state_change = nbr->state_change;
-
- nbr->nbr_nbma = NULL;
-
- OSPF_POLL_TIMER_ON (nbr_nbma->t_poll, ospf_poll_timer,
- nbr_nbma->v_poll);
-
- if (IS_DEBUG_OSPF (nsm, NSM_EVENTS))
- zlog_debug ("NSM[%s:%s]: Down (PollIntervalTimer scheduled)",
- IF_NAME (nbr->oi), inet_ntoa (nbr->address.u.prefix4));
- }
-
- return 0;
+ /* killing nbr_self is invalid */
+ if (nbr == nbr->oi->nbr_self) {
+ assert(nbr != nbr->oi->nbr_self);
+ return 0;
+ }
+
+ if (nbr->oi->type == OSPF_IFTYPE_NBMA && nbr->nbr_nbma != NULL) {
+ struct ospf_nbr_nbma *nbr_nbma = nbr->nbr_nbma;
+
+ nbr_nbma->nbr = NULL;
+ nbr_nbma->state_change = nbr->state_change;
+
+ nbr->nbr_nbma = NULL;
+
+ OSPF_POLL_TIMER_ON(nbr_nbma->t_poll, ospf_poll_timer,
+ nbr_nbma->v_poll);
+
+ if (IS_DEBUG_OSPF(nsm, NSM_EVENTS))
+ zlog_debug(
+ "NSM[%s:%s]: Down (PollIntervalTimer scheduled)",
+ IF_NAME(nbr->oi),
+ inet_ntoa(nbr->address.u.prefix4));
+ }
+
+ return 0;
}
/* Neighbor State Machine */
struct {
- int (*func) (struct ospf_neighbor *);
- int next_state;
-} NSM [OSPF_NSM_STATE_MAX][OSPF_NSM_EVENT_MAX] =
-{
- {
- /* DependUpon: dummy state. */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { NULL, NSM_DependUpon }, /* PacketReceived */
- { NULL, NSM_DependUpon }, /* Start */
- { NULL, NSM_DependUpon }, /* 2-WayReceived */
- { NULL, NSM_DependUpon }, /* NegotiationDone */
- { NULL, NSM_DependUpon }, /* ExchangeDone */
- { NULL, NSM_DependUpon }, /* BadLSReq */
- { NULL, NSM_DependUpon }, /* LoadingDone */
- { NULL, NSM_DependUpon }, /* AdjOK? */
- { NULL, NSM_DependUpon }, /* SeqNumberMismatch */
- { NULL, NSM_DependUpon }, /* 1-WayReceived */
- { NULL, NSM_DependUpon }, /* KillNbr */
- { NULL, NSM_DependUpon }, /* InactivityTimer */
- { NULL, NSM_DependUpon }, /* LLDown */
- },
- {
- /* Deleted: dummy state. */
- { NULL, NSM_Deleted }, /* NoEvent */
- { NULL, NSM_Deleted }, /* PacketReceived */
- { NULL, NSM_Deleted }, /* Start */
- { NULL, NSM_Deleted }, /* 2-WayReceived */
- { NULL, NSM_Deleted }, /* NegotiationDone */
- { NULL, NSM_Deleted }, /* ExchangeDone */
- { NULL, NSM_Deleted }, /* BadLSReq */
- { NULL, NSM_Deleted }, /* LoadingDone */
- { NULL, NSM_Deleted }, /* AdjOK? */
- { NULL, NSM_Deleted }, /* SeqNumberMismatch */
- { NULL, NSM_Deleted }, /* 1-WayReceived */
- { NULL, NSM_Deleted }, /* KillNbr */
- { NULL, NSM_Deleted }, /* InactivityTimer */
- { NULL, NSM_Deleted }, /* LLDown */
- },
- {
- /* Down: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_Init }, /* PacketReceived */
- { nsm_start, NSM_Attempt }, /* Start */
- { NULL, NSM_Down }, /* 2-WayReceived */
- { NULL, NSM_Down }, /* NegotiationDone */
- { NULL, NSM_Down }, /* ExchangeDone */
- { NULL, NSM_Down }, /* BadLSReq */
- { NULL, NSM_Down }, /* LoadingDone */
- { NULL, NSM_Down }, /* AdjOK? */
- { NULL, NSM_Down }, /* SeqNumberMismatch */
- { NULL, NSM_Down }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- {
- /* Attempt: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_Init }, /* PacketReceived */
- { NULL, NSM_Attempt }, /* Start */
- { NULL, NSM_Attempt }, /* 2-WayReceived */
- { NULL, NSM_Attempt }, /* NegotiationDone */
- { NULL, NSM_Attempt }, /* ExchangeDone */
- { NULL, NSM_Attempt }, /* BadLSReq */
- { NULL, NSM_Attempt }, /* LoadingDone */
- { NULL, NSM_Attempt }, /* AdjOK? */
- { NULL, NSM_Attempt }, /* SeqNumberMismatch */
- { NULL, NSM_Attempt }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- {
- /* Init: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_Init }, /* PacketReceived */
- { NULL, NSM_Init }, /* Start */
- { nsm_twoway_received, NSM_DependUpon }, /* 2-WayReceived */
- { NULL, NSM_Init }, /* NegotiationDone */
- { NULL, NSM_Init }, /* ExchangeDone */
- { NULL, NSM_Init }, /* BadLSReq */
- { NULL, NSM_Init }, /* LoadingDone */
- { NULL, NSM_Init }, /* AdjOK? */
- { NULL, NSM_Init }, /* SeqNumberMismatch */
- { NULL, NSM_Init }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- {
- /* 2-Way: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_TwoWay }, /* HelloReceived */
- { NULL, NSM_TwoWay }, /* Start */
- { NULL, NSM_TwoWay }, /* 2-WayReceived */
- { NULL, NSM_TwoWay }, /* NegotiationDone */
- { NULL, NSM_TwoWay }, /* ExchangeDone */
- { NULL, NSM_TwoWay }, /* BadLSReq */
- { NULL, NSM_TwoWay }, /* LoadingDone */
- { nsm_adj_ok, NSM_DependUpon }, /* AdjOK? */
- { NULL, NSM_TwoWay }, /* SeqNumberMismatch */
- { NULL, NSM_Init }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- {
- /* ExStart: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_ExStart }, /* PacaketReceived */
- { NULL, NSM_ExStart }, /* Start */
- { NULL, NSM_ExStart }, /* 2-WayReceived */
- { nsm_negotiation_done, NSM_Exchange }, /* NegotiationDone */
- { NULL, NSM_ExStart }, /* ExchangeDone */
- { NULL, NSM_ExStart }, /* BadLSReq */
- { NULL, NSM_ExStart }, /* LoadingDone */
- { nsm_adj_ok, NSM_DependUpon }, /* AdjOK? */
- { NULL, NSM_ExStart }, /* SeqNumberMismatch */
- { NULL, NSM_Init }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- {
- /* Exchange: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_Exchange }, /* PacketReceived */
- { NULL, NSM_Exchange }, /* Start */
- { NULL, NSM_Exchange }, /* 2-WayReceived */
- { NULL, NSM_Exchange }, /* NegotiationDone */
- { nsm_exchange_done, NSM_DependUpon }, /* ExchangeDone */
- { NULL, NSM_ExStart }, /* BadLSReq */
- { NULL, NSM_Exchange }, /* LoadingDone */
- { nsm_adj_ok, NSM_DependUpon }, /* AdjOK? */
- { NULL, NSM_ExStart }, /* SeqNumberMismatch */
- { NULL, NSM_Init }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- {
- /* Loading: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_Loading }, /* PacketReceived */
- { NULL, NSM_Loading }, /* Start */
- { NULL, NSM_Loading }, /* 2-WayReceived */
- { NULL, NSM_Loading }, /* NegotiationDone */
- { NULL, NSM_Loading }, /* ExchangeDone */
- { NULL, NSM_ExStart }, /* BadLSReq */
- { NULL, NSM_Full }, /* LoadingDone */
- { nsm_adj_ok, NSM_DependUpon }, /* AdjOK? */
- { NULL, NSM_ExStart }, /* SeqNumberMismatch */
- { NULL, NSM_Init }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
- { /* Full: */
- { NULL, NSM_DependUpon }, /* NoEvent */
- { nsm_packet_received, NSM_Full }, /* PacketReceived */
- { NULL, NSM_Full }, /* Start */
- { NULL, NSM_Full }, /* 2-WayReceived */
- { NULL, NSM_Full }, /* NegotiationDone */
- { NULL, NSM_Full }, /* ExchangeDone */
- { NULL, NSM_ExStart }, /* BadLSReq */
- { NULL, NSM_Full }, /* LoadingDone */
- { nsm_adj_ok, NSM_DependUpon }, /* AdjOK? */
- { NULL, NSM_ExStart }, /* SeqNumberMismatch */
- { NULL, NSM_Init }, /* 1-WayReceived */
- { nsm_kill_nbr, NSM_Deleted }, /* KillNbr */
- { nsm_kill_nbr, NSM_Deleted }, /* InactivityTimer */
- { nsm_kill_nbr, NSM_Deleted }, /* LLDown */
- },
+ int (*func)(struct ospf_neighbor *);
+ int next_state;
+} NSM[OSPF_NSM_STATE_MAX][OSPF_NSM_EVENT_MAX] = {
+ {
+ /* DependUpon: dummy state. */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {NULL, NSM_DependUpon}, /* PacketReceived */
+ {NULL, NSM_DependUpon}, /* Start */
+ {NULL, NSM_DependUpon}, /* 2-WayReceived */
+ {NULL, NSM_DependUpon}, /* NegotiationDone */
+ {NULL, NSM_DependUpon}, /* ExchangeDone */
+ {NULL, NSM_DependUpon}, /* BadLSReq */
+ {NULL, NSM_DependUpon}, /* LoadingDone */
+ {NULL, NSM_DependUpon}, /* AdjOK? */
+ {NULL, NSM_DependUpon}, /* SeqNumberMismatch */
+ {NULL, NSM_DependUpon}, /* 1-WayReceived */
+ {NULL, NSM_DependUpon}, /* KillNbr */
+ {NULL, NSM_DependUpon}, /* InactivityTimer */
+ {NULL, NSM_DependUpon}, /* LLDown */
+ },
+ {
+ /* Deleted: dummy state. */
+ {NULL, NSM_Deleted}, /* NoEvent */
+ {NULL, NSM_Deleted}, /* PacketReceived */
+ {NULL, NSM_Deleted}, /* Start */
+ {NULL, NSM_Deleted}, /* 2-WayReceived */
+ {NULL, NSM_Deleted}, /* NegotiationDone */
+ {NULL, NSM_Deleted}, /* ExchangeDone */
+ {NULL, NSM_Deleted}, /* BadLSReq */
+ {NULL, NSM_Deleted}, /* LoadingDone */
+ {NULL, NSM_Deleted}, /* AdjOK? */
+ {NULL, NSM_Deleted}, /* SeqNumberMismatch */
+ {NULL, NSM_Deleted}, /* 1-WayReceived */
+ {NULL, NSM_Deleted}, /* KillNbr */
+ {NULL, NSM_Deleted}, /* InactivityTimer */
+ {NULL, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* Down: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_Init}, /* PacketReceived */
+ {nsm_start, NSM_Attempt}, /* Start */
+ {NULL, NSM_Down}, /* 2-WayReceived */
+ {NULL, NSM_Down}, /* NegotiationDone */
+ {NULL, NSM_Down}, /* ExchangeDone */
+ {NULL, NSM_Down}, /* BadLSReq */
+ {NULL, NSM_Down}, /* LoadingDone */
+ {NULL, NSM_Down}, /* AdjOK? */
+ {NULL, NSM_Down}, /* SeqNumberMismatch */
+ {NULL, NSM_Down}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* Attempt: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_Init}, /* PacketReceived */
+ {NULL, NSM_Attempt}, /* Start */
+ {NULL, NSM_Attempt}, /* 2-WayReceived */
+ {NULL, NSM_Attempt}, /* NegotiationDone */
+ {NULL, NSM_Attempt}, /* ExchangeDone */
+ {NULL, NSM_Attempt}, /* BadLSReq */
+ {NULL, NSM_Attempt}, /* LoadingDone */
+ {NULL, NSM_Attempt}, /* AdjOK? */
+ {NULL, NSM_Attempt}, /* SeqNumberMismatch */
+ {NULL, NSM_Attempt}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* Init: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_Init}, /* PacketReceived */
+ {NULL, NSM_Init}, /* Start */
+ {nsm_twoway_received, NSM_DependUpon}, /* 2-WayReceived */
+ {NULL, NSM_Init}, /* NegotiationDone */
+ {NULL, NSM_Init}, /* ExchangeDone */
+ {NULL, NSM_Init}, /* BadLSReq */
+ {NULL, NSM_Init}, /* LoadingDone */
+ {NULL, NSM_Init}, /* AdjOK? */
+ {NULL, NSM_Init}, /* SeqNumberMismatch */
+ {NULL, NSM_Init}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* 2-Way: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_TwoWay}, /* HelloReceived */
+ {NULL, NSM_TwoWay}, /* Start */
+ {NULL, NSM_TwoWay}, /* 2-WayReceived */
+ {NULL, NSM_TwoWay}, /* NegotiationDone */
+ {NULL, NSM_TwoWay}, /* ExchangeDone */
+ {NULL, NSM_TwoWay}, /* BadLSReq */
+ {NULL, NSM_TwoWay}, /* LoadingDone */
+ {nsm_adj_ok, NSM_DependUpon}, /* AdjOK? */
+ {NULL, NSM_TwoWay}, /* SeqNumberMismatch */
+ {NULL, NSM_Init}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* ExStart: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_ExStart}, /* PacaketReceived */
+ {NULL, NSM_ExStart}, /* Start */
+ {NULL, NSM_ExStart}, /* 2-WayReceived */
+ {nsm_negotiation_done, NSM_Exchange}, /* NegotiationDone */
+ {NULL, NSM_ExStart}, /* ExchangeDone */
+ {NULL, NSM_ExStart}, /* BadLSReq */
+ {NULL, NSM_ExStart}, /* LoadingDone */
+ {nsm_adj_ok, NSM_DependUpon}, /* AdjOK? */
+ {NULL, NSM_ExStart}, /* SeqNumberMismatch */
+ {NULL, NSM_Init}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* Exchange: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_Exchange}, /* PacketReceived */
+ {NULL, NSM_Exchange}, /* Start */
+ {NULL, NSM_Exchange}, /* 2-WayReceived */
+ {NULL, NSM_Exchange}, /* NegotiationDone */
+ {nsm_exchange_done, NSM_DependUpon}, /* ExchangeDone */
+ {NULL, NSM_ExStart}, /* BadLSReq */
+ {NULL, NSM_Exchange}, /* LoadingDone */
+ {nsm_adj_ok, NSM_DependUpon}, /* AdjOK? */
+ {NULL, NSM_ExStart}, /* SeqNumberMismatch */
+ {NULL, NSM_Init}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* Loading: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_Loading}, /* PacketReceived */
+ {NULL, NSM_Loading}, /* Start */
+ {NULL, NSM_Loading}, /* 2-WayReceived */
+ {NULL, NSM_Loading}, /* NegotiationDone */
+ {NULL, NSM_Loading}, /* ExchangeDone */
+ {NULL, NSM_ExStart}, /* BadLSReq */
+ {NULL, NSM_Full}, /* LoadingDone */
+ {nsm_adj_ok, NSM_DependUpon}, /* AdjOK? */
+ {NULL, NSM_ExStart}, /* SeqNumberMismatch */
+ {NULL, NSM_Init}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
+ {
+ /* Full: */
+ {NULL, NSM_DependUpon}, /* NoEvent */
+ {nsm_packet_received, NSM_Full}, /* PacketReceived */
+ {NULL, NSM_Full}, /* Start */
+ {NULL, NSM_Full}, /* 2-WayReceived */
+ {NULL, NSM_Full}, /* NegotiationDone */
+ {NULL, NSM_Full}, /* ExchangeDone */
+ {NULL, NSM_ExStart}, /* BadLSReq */
+ {NULL, NSM_Full}, /* LoadingDone */
+ {nsm_adj_ok, NSM_DependUpon}, /* AdjOK? */
+ {NULL, NSM_ExStart}, /* SeqNumberMismatch */
+ {NULL, NSM_Init}, /* 1-WayReceived */
+ {nsm_kill_nbr, NSM_Deleted}, /* KillNbr */
+ {nsm_kill_nbr, NSM_Deleted}, /* InactivityTimer */
+ {nsm_kill_nbr, NSM_Deleted}, /* LLDown */
+ },
};
-static const char *ospf_nsm_event_str[] =
-{
- "NoEvent",
- "PacketReceived",
- "Start",
- "2-WayReceived",
- "NegotiationDone",
- "ExchangeDone",
- "BadLSReq",
- "LoadingDone",
- "AdjOK?",
- "SeqNumberMismatch",
- "1-WayReceived",
- "KillNbr",
- "InactivityTimer",
- "LLDown",
+static const char *ospf_nsm_event_str[] = {
+ "NoEvent", "PacketReceived", "Start",
+ "2-WayReceived", "NegotiationDone", "ExchangeDone",
+ "BadLSReq", "LoadingDone", "AdjOK?",
+ "SeqNumberMismatch", "1-WayReceived", "KillNbr",
+ "InactivityTimer", "LLDown",
};
-static void
-nsm_notice_state_change (struct ospf_neighbor *nbr, int next_state, int event)
+static void nsm_notice_state_change(struct ospf_neighbor *nbr, int next_state,
+ int event)
{
- /* Logging change of status. */
- if (IS_DEBUG_OSPF (nsm, NSM_STATUS))
- zlog_debug ("NSM[%s:%s]: State change %s -> %s (%s)",
- IF_NAME (nbr->oi), inet_ntoa (nbr->router_id),
- lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
- lookup_msg(ospf_nsm_state_msg, next_state, NULL),
- ospf_nsm_event_str [event]);
-
- /* Optionally notify about adjacency changes */
- if (CHECK_FLAG(nbr->oi->ospf->config, OSPF_LOG_ADJACENCY_CHANGES) &&
- (CHECK_FLAG(nbr->oi->ospf->config, OSPF_LOG_ADJACENCY_DETAIL) ||
- (next_state == NSM_Full) || (next_state < nbr->state)))
- zlog_notice("AdjChg: Nbr %s on %s: %s -> %s (%s)",
- inet_ntoa (nbr->router_id), IF_NAME (nbr->oi),
- lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
- lookup_msg(ospf_nsm_state_msg, next_state, NULL),
- ospf_nsm_event_str [event]);
-
- /* Advance in NSM */
- if (next_state > nbr->state)
- monotime(&nbr->ts_last_progress);
- else /* regression in NSM */
- {
- monotime(&nbr->ts_last_regress);
- nbr->last_regress_str = ospf_nsm_event_str [event];
- }
-
+ /* Logging change of status. */
+ if (IS_DEBUG_OSPF(nsm, NSM_STATUS))
+ zlog_debug("NSM[%s:%s]: State change %s -> %s (%s)",
+ IF_NAME(nbr->oi), inet_ntoa(nbr->router_id),
+ lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
+ lookup_msg(ospf_nsm_state_msg, next_state, NULL),
+ ospf_nsm_event_str[event]);
+
+ /* Optionally notify about adjacency changes */
+ if (CHECK_FLAG(nbr->oi->ospf->config, OSPF_LOG_ADJACENCY_CHANGES)
+ && (CHECK_FLAG(nbr->oi->ospf->config, OSPF_LOG_ADJACENCY_DETAIL)
+ || (next_state == NSM_Full) || (next_state < nbr->state)))
+ zlog_notice("AdjChg: Nbr %s on %s: %s -> %s (%s)",
+ inet_ntoa(nbr->router_id), IF_NAME(nbr->oi),
+ lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
+ lookup_msg(ospf_nsm_state_msg, next_state, NULL),
+ ospf_nsm_event_str[event]);
+
+ /* Advance in NSM */
+ if (next_state > nbr->state)
+ monotime(&nbr->ts_last_progress);
+ else /* regression in NSM */
+ {
+ monotime(&nbr->ts_last_regress);
+ nbr->last_regress_str = ospf_nsm_event_str[event];
+ }
}
-static void
-nsm_change_state (struct ospf_neighbor *nbr, int state)
+static void nsm_change_state(struct ospf_neighbor *nbr, int state)
{
- struct ospf_interface *oi = nbr->oi;
- struct ospf_area *vl_area = NULL;
- u_char old_state;
- int x;
- int force = 1;
-
- /* Preserve old status. */
- old_state = nbr->state;
-
- /* Change to new status. */
- nbr->state = state;
-
- /* Statistics. */
- nbr->state_change++;
-
- if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
- vl_area = ospf_area_lookup_by_area_id (oi->ospf, oi->vl_data->vl_area_id);
-
- /* Generate NeighborChange ISM event.
- *
- * In response to NeighborChange, DR election is rerun. The information
- * from the election process is required by the router-lsa construction.
- *
- * Therefore, trigger the event prior to refreshing the LSAs. */
- switch (oi->state) {
- case ISM_DROther:
- case ISM_Backup:
- case ISM_DR:
- if ((old_state < NSM_TwoWay && state >= NSM_TwoWay) ||
- (old_state >= NSM_TwoWay && state < NSM_TwoWay))
- OSPF_ISM_EVENT_EXECUTE (oi, ISM_NeighborChange);
- break;
- default:
- /* ISM_PointToPoint -> ISM_Down, ISM_Loopback -> ISM_Down, etc. */
- break;
- }
-
- /* One of the neighboring routers changes to/from the FULL state. */
- if ((old_state != NSM_Full && state == NSM_Full) ||
- (old_state == NSM_Full && state != NSM_Full))
- {
- if (state == NSM_Full)
- {
- oi->full_nbrs++;
- oi->area->full_nbrs++;
-
- ospf_check_abr_status (oi->ospf);
-
- if (oi->type == OSPF_IFTYPE_VIRTUALLINK && vl_area)
- if (++vl_area->full_vls == 1)
- ospf_schedule_abr_task (oi->ospf);
-
- /* kevinm: refresh any redistributions */
- for (x = ZEBRA_ROUTE_SYSTEM; x < ZEBRA_ROUTE_MAX; x++)
- {
- struct list *red_list;
- struct listnode *node;
- struct ospf_redist *red;
-
- if (x == ZEBRA_ROUTE_OSPF6)
- continue;
-
- red_list = oi->ospf->redist[x];
- if (!red_list)
- continue;
-
- for (ALL_LIST_ELEMENTS_RO(red_list, node, red))
- ospf_external_lsa_refresh_type (oi->ospf, x, red->instance, force);
- }
- /* XXX: Clearly some thing is wrong with refresh of external LSAs
- * this added to hack around defaults not refreshing after a timer
- * jump.
- */
- ospf_external_lsa_refresh_default (oi->ospf);
+ struct ospf_interface *oi = nbr->oi;
+ struct ospf_area *vl_area = NULL;
+ uint8_t old_state;
+ int x;
+ int force = 1;
+
+ /* Preserve old status. */
+ old_state = nbr->state;
+
+ /* Change to new status. */
+ nbr->state = state;
+
+ /* Statistics. */
+ nbr->state_change++;
+
+ if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
+ vl_area = ospf_area_lookup_by_area_id(oi->ospf,
+ oi->vl_data->vl_area_id);
+
+ /* Generate NeighborChange ISM event.
+ *
+ * In response to NeighborChange, DR election is rerun. The information
+ * from the election process is required by the router-lsa construction.
+ *
+ * Therefore, trigger the event prior to refreshing the LSAs. */
+ switch (oi->state) {
+ case ISM_DROther:
+ case ISM_Backup:
+ case ISM_DR:
+ if ((old_state < NSM_TwoWay && state >= NSM_TwoWay)
+ || (old_state >= NSM_TwoWay && state < NSM_TwoWay))
+ OSPF_ISM_EVENT_EXECUTE(oi, ISM_NeighborChange);
+ break;
+ default:
+ /* ISM_PointToPoint -> ISM_Down, ISM_Loopback -> ISM_Down, etc.
+ */
+ break;
}
- else
- {
- oi->full_nbrs--;
- oi->area->full_nbrs--;
- ospf_check_abr_status (oi->ospf);
+ /* One of the neighboring routers changes to/from the FULL state. */
+ if ((old_state != NSM_Full && state == NSM_Full)
+ || (old_state == NSM_Full && state != NSM_Full)) {
+ if (state == NSM_Full) {
+ oi->full_nbrs++;
+ oi->area->full_nbrs++;
+
+ ospf_check_abr_status(oi->ospf);
+
+ if (oi->type == OSPF_IFTYPE_VIRTUALLINK && vl_area)
+ if (++vl_area->full_vls == 1)
+ ospf_schedule_abr_task(oi->ospf);
+
+ /* kevinm: refresh any redistributions */
+ for (x = ZEBRA_ROUTE_SYSTEM; x < ZEBRA_ROUTE_MAX; x++) {
+ struct list *red_list;
+ struct listnode *node;
+ struct ospf_redist *red;
+
+ if (x == ZEBRA_ROUTE_OSPF6)
+ continue;
+
+ red_list = oi->ospf->redist[x];
+ if (!red_list)
+ continue;
+
+ for (ALL_LIST_ELEMENTS_RO(red_list, node, red))
+ ospf_external_lsa_refresh_type(
+ oi->ospf, x, red->instance,
+ force);
+ }
+ /* XXX: Clearly some thing is wrong with refresh of
+ * external LSAs
+ * this added to hack around defaults not refreshing
+ * after a timer
+ * jump.
+ */
+ ospf_external_lsa_refresh_default(oi->ospf);
+ } else {
+ oi->full_nbrs--;
+ oi->area->full_nbrs--;
+
+ ospf_check_abr_status(oi->ospf);
+
+ if (oi->type == OSPF_IFTYPE_VIRTUALLINK && vl_area)
+ if (vl_area->full_vls > 0)
+ if (--vl_area->full_vls == 0)
+ ospf_schedule_abr_task(
+ oi->ospf);
+ }
+
+ if (CHECK_FLAG(oi->ospf->config, OSPF_LOG_ADJACENCY_DETAIL))
+ zlog_info(
+ "%s:(%s, %s -> %s): "
+ "scheduling new router-LSA origination",
+ __PRETTY_FUNCTION__, inet_ntoa(nbr->router_id),
+ lookup_msg(ospf_nsm_state_msg, old_state, NULL),
+ lookup_msg(ospf_nsm_state_msg, state, NULL));
+
+ ospf_router_lsa_update_area(oi->area);
+
+ if (oi->type == OSPF_IFTYPE_VIRTUALLINK) {
+ vl_area = ospf_area_lookup_by_area_id(
+ oi->ospf, oi->vl_data->vl_area_id);
+
+ if (vl_area)
+ ospf_router_lsa_update_area(vl_area);
+ }
+
+ /* Originate network-LSA. */
+ if (oi->state == ISM_DR) {
+ if (oi->network_lsa_self && oi->full_nbrs == 0) {
+ ospf_lsa_flush_area(oi->network_lsa_self,
+ oi->area);
+ ospf_lsa_unlock(&oi->network_lsa_self);
+ oi->network_lsa_self = NULL;
+ } else
+ ospf_network_lsa_update(oi);
+ }
+ }
- if (oi->type == OSPF_IFTYPE_VIRTUALLINK && vl_area)
- if (vl_area->full_vls > 0)
- if (--vl_area->full_vls == 0)
- ospf_schedule_abr_task (oi->ospf);
+ ospf_opaque_nsm_change(nbr, old_state);
+
+ /* State changes from > ExStart to <= ExStart should clear any Exchange
+ * or Full/LSA Update related lists and state.
+ * Potential causal events: BadLSReq, SeqNumberMismatch, AdjOK?
+ */
+ if ((old_state > NSM_ExStart) && (state <= NSM_ExStart))
+ nsm_clear_adj(nbr);
+
+ /* Start DD exchange protocol */
+ if (state == NSM_ExStart) {
+ if (nbr->dd_seqnum == 0)
+ nbr->dd_seqnum = (uint32_t)random();
+ else
+ nbr->dd_seqnum++;
+
+ nbr->dd_flags =
+ OSPF_DD_FLAG_I | OSPF_DD_FLAG_M | OSPF_DD_FLAG_MS;
+ ospf_db_desc_send(nbr);
}
- zlog_info ("nsm_change_state(%s, %s -> %s): "
- "scheduling new router-LSA origination",
- inet_ntoa (nbr->router_id),
- lookup_msg(ospf_nsm_state_msg, old_state, NULL),
- lookup_msg(ospf_nsm_state_msg, state, NULL));
+ /* clear cryptographic sequence number */
+ if (state == NSM_Down)
+ nbr->crypt_seqnum = 0;
- ospf_router_lsa_update_area (oi->area);
+ ospf_bfd_trigger_event(nbr, old_state, state);
- if (oi->type == OSPF_IFTYPE_VIRTUALLINK)
- {
- struct ospf_area *vl_area =
- ospf_area_lookup_by_area_id (oi->ospf, oi->vl_data->vl_area_id);
-
- if (vl_area)
- ospf_router_lsa_update_area (vl_area);
- }
-
- /* Originate network-LSA. */
- if (oi->state == ISM_DR)
- {
- if (oi->network_lsa_self && oi->full_nbrs == 0)
- {
- ospf_lsa_flush_area (oi->network_lsa_self, oi->area);
- ospf_lsa_unlock (&oi->network_lsa_self);
- oi->network_lsa_self = NULL;
- }
- else
- ospf_network_lsa_update (oi);
- }
- }
-
- ospf_opaque_nsm_change (nbr, old_state);
-
- /* State changes from > ExStart to <= ExStart should clear any Exchange
- * or Full/LSA Update related lists and state.
- * Potential causal events: BadLSReq, SeqNumberMismatch, AdjOK?
- */
- if ((old_state > NSM_ExStart) && (state <= NSM_ExStart))
- nsm_clear_adj (nbr);
-
- /* Start DD exchange protocol */
- if (state == NSM_ExStart)
- {
- if (nbr->dd_seqnum == 0)
- nbr->dd_seqnum = (uint32_t)random ();
- else
- nbr->dd_seqnum++;
-
- nbr->dd_flags = OSPF_DD_FLAG_I|OSPF_DD_FLAG_M|OSPF_DD_FLAG_MS;
- ospf_db_desc_send (nbr);
- }
-
- /* clear cryptographic sequence number */
- if (state == NSM_Down)
- nbr->crypt_seqnum = 0;
-
- ospf_bfd_trigger_event(nbr, old_state, state);
-
- /* Preserve old status? */
+ /* Preserve old status? */
}
/* Execute NSM event process. */
-int
-ospf_nsm_event (struct thread *thread)
+int ospf_nsm_event(struct thread *thread)
{
- int event;
- int next_state;
- struct ospf_neighbor *nbr;
-
- nbr = THREAD_ARG (thread);
- event = THREAD_VAL (thread);
-
- if (IS_DEBUG_OSPF (nsm, NSM_EVENTS))
- zlog_debug ("NSM[%s:%s]: %s (%s)", IF_NAME (nbr->oi),
- inet_ntoa (nbr->router_id),
- lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
- ospf_nsm_event_str [event]);
-
- next_state = NSM [nbr->state][event].next_state;
-
- /* Call function. */
- if (NSM [nbr->state][event].func != NULL)
- {
- int func_state = (*(NSM [nbr->state][event].func))(nbr);
-
- if (NSM [nbr->state][event].next_state == NSM_DependUpon)
- next_state = func_state;
- else if (func_state)
- {
- /* There's a mismatch between the FSM tables and what an FSM
- * action/state-change function returned. State changes which
- * do not have conditional/DependUpon next-states should not
- * try set next_state.
- */
- zlog_warn ("NSM[%s:%s]: %s (%s): "
- "Warning: action tried to change next_state to %s",
- IF_NAME (nbr->oi), inet_ntoa (nbr->router_id),
- lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
- ospf_nsm_event_str [event],
- lookup_msg(ospf_nsm_state_msg, func_state, NULL));
- }
- }
-
- assert (next_state != NSM_DependUpon);
-
- /* If state is changed. */
- if (next_state != nbr->state)
- {
- int old_state = nbr->state;
-
- nsm_notice_state_change (nbr, next_state, event);
- nsm_change_state (nbr, next_state);
-
- hook_call(ospf_nsm_change, nbr, next_state, old_state);
- }
-
- /* Make sure timer is set. */
- nsm_timer_set (nbr);
-
- /* When event is NSM_KillNbr, InactivityTimer or LLDown, the neighbor
- * is deleted.
- *
- * Rather than encode knowledge here of which events lead to NBR
- * delete, we take our cue from the NSM table, via the dummy
- * 'Deleted' neighbour state.
- */
- if (nbr->state == NSM_Deleted)
- ospf_nbr_delete (nbr);
-
- return 0;
+ int event;
+ int next_state;
+ struct ospf_neighbor *nbr;
+
+ nbr = THREAD_ARG(thread);
+ event = THREAD_VAL(thread);
+
+ if (IS_DEBUG_OSPF(nsm, NSM_EVENTS))
+ zlog_debug("NSM[%s:%s]: %s (%s)", IF_NAME(nbr->oi),
+ inet_ntoa(nbr->router_id),
+ lookup_msg(ospf_nsm_state_msg, nbr->state, NULL),
+ ospf_nsm_event_str[event]);
+
+ next_state = NSM[nbr->state][event].next_state;
+
+ /* Call function. */
+ if (NSM[nbr->state][event].func != NULL) {
+ int func_state = (*(NSM[nbr->state][event].func))(nbr);
+
+ if (NSM[nbr->state][event].next_state == NSM_DependUpon)
+ next_state = func_state;
+ else if (func_state) {
+ /* There's a mismatch between the FSM tables and what an
+ * FSM
+ * action/state-change function returned. State changes
+ * which
+ * do not have conditional/DependUpon next-states should
+ * not
+ * try set next_state.
+ */
+ flog_err(
+ EC_OSPF_FSM_INVALID_STATE,
+ "NSM[%s:%s]: %s (%s): "
+ "Warning: action tried to change next_state to %s",
+ IF_NAME(nbr->oi), inet_ntoa(nbr->router_id),
+ lookup_msg(ospf_nsm_state_msg, nbr->state,
+ NULL),
+ ospf_nsm_event_str[event],
+ lookup_msg(ospf_nsm_state_msg, func_state,
+ NULL));
+ }
+ }
+
+ assert(next_state != NSM_DependUpon);
+
+ /* If state is changed. */
+ if (next_state != nbr->state) {
+ int old_state = nbr->state;
+
+ nsm_notice_state_change(nbr, next_state, event);
+ nsm_change_state(nbr, next_state);
+
+ hook_call(ospf_nsm_change, nbr, next_state, old_state);
+ }
+
+ /* Make sure timer is set. */
+ nsm_timer_set(nbr);
+
+ /* When event is NSM_KillNbr, InactivityTimer or LLDown, the neighbor
+ * is deleted.
+ *
+ * Rather than encode knowledge here of which events lead to NBR
+ * delete, we take our cue from the NSM table, via the dummy
+ * 'Deleted' neighbour state.
+ */
+ if (nbr->state == NSM_Deleted)
+ ospf_nbr_delete(nbr);
+
+ return 0;
}
/* Check loading state. */
-void
-ospf_check_nbr_loading (struct ospf_neighbor *nbr)
+void ospf_check_nbr_loading(struct ospf_neighbor *nbr)
{
- if (nbr->state == NSM_Loading)
- {
- if (ospf_ls_request_isempty (nbr))
- OSPF_NSM_EVENT_SCHEDULE (nbr, NSM_LoadingDone);
- else if (nbr->ls_req_last == NULL)
- ospf_ls_req_event (nbr);
- }
+ if (nbr->state == NSM_Loading) {
+ if (ospf_ls_request_isempty(nbr))
+ OSPF_NSM_EVENT_SCHEDULE(nbr, NSM_LoadingDone);
+ else if (nbr->ls_req_last == NULL)
+ ospf_ls_req_event(nbr);
+ }
}
projects / mirror_frr.git / blobdiff