/* Status goes to Established. Send keepalive packet then make first
update information. */
int
bgp_establish (struct peer *peer)
{
struct bgp_notify *notify;
afi_t afi;
safi_t safi;
/* Reset capability open status flag. */
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_CAPABILITY_OPEN))
SET_FLAG (peer->sflags, PEER_STATUS_CAPABILITY_OPEN);
/* Clear last notification data. */
notify = &peer->notify;
if (notify->data)
XFREE (MTYPE_TMP, notify->data);
memset (notify, 0, sizeof (struct bgp_notify));
/* Clear start timer value to default. */
peer->v_start = BGP_INIT_START_TIMER;
/* Increment established count. */
peer->established++;
bgp_fsm_change_status (peer, Established);
#ifdef HAVE_SNMP
bgpTrapEstablished (peer);
#endif /* HAVE_SNMP */
/* Reset uptime, send keepalive, send current table. */
bgp_uptime_reset (peer);
/* Send route-refresh when ORF is enabled */
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_ADV))
{
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_RCV))
bgp_route_refresh_send (peer, afi, safi, ORF_TYPE_PREFIX,
REFRESH_IMMEDIATE, 0);
else if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_OLD_RCV))
bgp_route_refresh_send (peer, afi, safi, ORF_TYPE_PREFIX_OLD,
REFRESH_IMMEDIATE, 0);
}
if (peer->v_keepalive)
bgp_keepalive_send (peer);
/* First update is deferred until ORF or ROUTE-REFRESH is received */
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_ADV))
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_RCV)
|| CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_OLD_RCV))
SET_FLAG (peer->af_sflags[afi][safi], PEER_STATUS_ORF_WAIT_REFRESH);
bgp_announce_route_all (peer);
BGP_TIMER_ON (peer->t_routeadv, bgp_routeadv_timer, 1);
return 0;
}
/* Status goes to Established. Send keepalive packet then make first
update information. */
static int
bgp_establish (struct peer *peer)
{
struct bgp_notify *notify;
afi_t afi;
safi_t safi;
int nsf_af_count = 0;
/* Reset capability open status flag. */
if (! CHECK_FLAG (peer->sflags, PEER_STATUS_CAPABILITY_OPEN))
SET_FLAG (peer->sflags, PEER_STATUS_CAPABILITY_OPEN);
/* Clear last notification data. */
notify = &peer->notify;
if (notify->data)
XFREE (MTYPE_TMP, notify->data);
memset (notify, 0, sizeof (struct bgp_notify));
/* Clear start timer value to default. */
peer->v_start = BGP_INIT_START_TIMER;
/* Increment established count. */
peer->established++;
bgp_fsm_change_status (peer, Established);
/* bgp log-neighbor-changes of neighbor Up */
if (bgp_flag_check (peer->bgp, BGP_FLAG_LOG_NEIGHBOR_CHANGES))
zlog_info ("%%ADJCHANGE: neighbor %s Up", peer->host);
/* graceful restart */
UNSET_FLAG (peer->sflags, PEER_STATUS_NSF_WAIT);
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_UNICAST_MULTICAST ; safi++)
{
if (peer->afc_nego[afi][safi]
&& CHECK_FLAG (peer->cap, PEER_CAP_RESTART_ADV)
&& CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_RESTART_AF_RCV))
{
if (peer->nsf[afi][safi]
&& ! CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_RESTART_AF_PRESERVE_RCV))
bgp_clear_stale_route (peer, afi, safi);
peer->nsf[afi][safi] = 1;
nsf_af_count++;
}
else
{
if (peer->nsf[afi][safi])
bgp_clear_stale_route (peer, afi, safi);
peer->nsf[afi][safi] = 0;
}
}
if (nsf_af_count)
SET_FLAG (peer->sflags, PEER_STATUS_NSF_MODE);
else
{
UNSET_FLAG (peer->sflags, PEER_STATUS_NSF_MODE);
if (peer->t_gr_stale)
{
BGP_TIMER_OFF (peer->t_gr_stale);
if (BGP_DEBUG (events, EVENTS))
zlog_debug ("%s graceful restart stalepath timer stopped", peer->host);
}
}
if (peer->t_gr_restart)
{
BGP_TIMER_OFF (peer->t_gr_restart);
if (BGP_DEBUG (events, EVENTS))
zlog_debug ("%s graceful restart timer stopped", peer->host);
}
#ifdef HAVE_SNMP
bgpTrapEstablished (peer);
#endif /* HAVE_SNMP */
/* Reset uptime, send keepalive, send current table. */
bgp_uptime_reset (peer);
/* Send route-refresh when ORF is enabled */
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_ADV))
{
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_RCV))
bgp_route_refresh_send (peer, afi, safi, ORF_TYPE_PREFIX,
REFRESH_IMMEDIATE, 0);
else if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_OLD_RCV))
bgp_route_refresh_send (peer, afi, safi, ORF_TYPE_PREFIX_OLD,
REFRESH_IMMEDIATE, 0);
}
if (peer->v_keepalive)
bgp_keepalive_send (peer);
/* First update is deferred until ORF or ROUTE-REFRESH is received */
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_RM_ADV))
if (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_RCV)
|| CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ORF_PREFIX_SM_OLD_RCV))
SET_FLAG (peer->af_sflags[afi][safi], PEER_STATUS_ORF_WAIT_REFRESH);
bgp_announce_route_all (peer);
BGP_TIMER_ON (peer->t_routeadv, bgp_routeadv_timer, 1);
return 0;
}
/* Administrative BGP peer stop event. */
int
bgp_stop (struct peer *peer)
{
afi_t afi;
safi_t safi;
char orf_name[BUFSIZ];
/* Delete all existing events of the peer */
BGP_EVENT_FLUSH (peer);
/* Increment Dropped count. */
if (peer->status == Established)
{
peer->dropped++;
/* bgp log-neighbor-changes of neighbor Down */
if (bgp_flag_check (peer->bgp, BGP_FLAG_LOG_NEIGHBOR_CHANGES))
zlog_info ("%%ADJCHANGE: neighbor %s Down %s", peer->host,
peer_down_str [(int) peer->last_reset]);
/* graceful restart */
if (peer->t_gr_stale)
{
BGP_TIMER_OFF (peer->t_gr_stale);
if (BGP_DEBUG (events, EVENTS))
zlog_debug ("%s graceful restart stalepath timer stopped", peer->host);
}
if (CHECK_FLAG (peer->sflags, PEER_STATUS_NSF_WAIT))
{
if (BGP_DEBUG (events, EVENTS))
{
zlog_debug ("%s graceful restart timer started for %d sec",
peer->host, peer->v_gr_restart);
zlog_debug ("%s graceful restart stalepath timer started for %d sec",
peer->host, peer->bgp->stalepath_time);
}
BGP_TIMER_ON (peer->t_gr_restart, bgp_graceful_restart_timer_expire,
peer->v_gr_restart);
BGP_TIMER_ON (peer->t_gr_stale, bgp_graceful_stale_timer_expire,
peer->bgp->stalepath_time);
}
else
{
UNSET_FLAG (peer->sflags, PEER_STATUS_NSF_MODE);
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_UNICAST_MULTICAST ; safi++)
peer->nsf[afi][safi] = 0;
}
/* set last reset time */
peer->resettime = time (NULL);
/* Reset uptime. */
bgp_uptime_reset (peer);
#ifdef HAVE_SNMP
bgpTrapBackwardTransition (peer);
#endif /* HAVE_SNMP */
/* Reset uptime. */
bgp_uptime_reset (peer);
/* Reset peer synctime */
peer->synctime = 0;
}
/* Stop read and write threads when exists. */
BGP_READ_OFF (peer->t_read);
BGP_WRITE_OFF (peer->t_write);
/* Stop all timers. */
BGP_TIMER_OFF (peer->t_start);
BGP_TIMER_OFF (peer->t_connect);
BGP_TIMER_OFF (peer->t_holdtime);
BGP_TIMER_OFF (peer->t_keepalive);
BGP_TIMER_OFF (peer->t_asorig);
BGP_TIMER_OFF (peer->t_routeadv);
/* Stream reset. */
peer->packet_size = 0;
/* Clear input and output buffer. */
if (peer->ibuf)
stream_reset (peer->ibuf);
if (peer->work)
stream_reset (peer->work);
if (peer->obuf)
stream_fifo_clean (peer->obuf);
/* Close of file descriptor. */
if (peer->fd >= 0)
{
close (peer->fd);
peer->fd = -1;
}
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
{
/* Reset all negotiated variables */
peer->afc_nego[afi][safi] = 0;
peer->afc_adv[afi][safi] = 0;
peer->afc_recv[afi][safi] = 0;
/* peer address family capability flags*/
peer->af_cap[afi][safi] = 0;
/* peer address family status flags*/
peer->af_sflags[afi][safi] = 0;
/* Received ORF prefix-filter */
peer->orf_plist[afi][safi] = NULL;
/* ORF received prefix-filter pnt */
sprintf (orf_name, "%s.%d.%d", peer->host, afi, safi);
prefix_bgp_orf_remove_all (orf_name);
}
/* Reset keepalive and holdtime */
if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER))
{
peer->v_keepalive = peer->keepalive;
peer->v_holdtime = peer->holdtime;
}
else
{
peer->v_keepalive = peer->bgp->default_keepalive;
peer->v_holdtime = peer->bgp->default_holdtime;
}
peer->update_time = 0;
/* Until we are sure that there is no problem about prefix count
this should be commented out.*/
#if 0
/* Reset prefix count */
peer->pcount[AFI_IP][SAFI_UNICAST] = 0;
peer->pcount[AFI_IP][SAFI_MULTICAST] = 0;
peer->pcount[AFI_IP][SAFI_MPLS_VPN] = 0;
peer->pcount[AFI_IP6][SAFI_UNICAST] = 0;
peer->pcount[AFI_IP6][SAFI_MULTICAST] = 0;
#endif /* 0 */
return 0;
}
/* Administrative BGP peer stop event. */
int
bgp_stop (struct peer *peer)
{
int established = 0;
afi_t afi;
safi_t safi;
char orf_name[BUFSIZ];
/* Increment Dropped count. */
if (peer->status == Established)
{
established = 1;
peer->dropped++;
bgp_fsm_change_status (peer, Idle);
#ifdef HAVE_SNMP
bgpTrapBackwardTransition (peer);
#endif /* HAVE_SNMP */
}
/* Reset uptime. */
bgp_uptime_reset (peer);
/* Need of clear of peer. */
if (established)
bgp_clear_route_all (peer);
/* Stop read and write threads when exists. */
BGP_READ_OFF (peer->t_read);
BGP_WRITE_OFF (peer->t_write);
/* Stop all timers. */
BGP_TIMER_OFF (peer->t_start);
BGP_TIMER_OFF (peer->t_connect);
BGP_TIMER_OFF (peer->t_holdtime);
BGP_TIMER_OFF (peer->t_keepalive);
BGP_TIMER_OFF (peer->t_asorig);
BGP_TIMER_OFF (peer->t_routeadv);
/* Delete all existing events of the peer. */
BGP_EVENT_DELETE (peer);
/* Stream reset. */
peer->packet_size = 0;
/* Clear input and output buffer. */
if (peer->ibuf)
stream_reset (peer->ibuf);
if (peer->work)
stream_reset (peer->work);
stream_fifo_clean (peer->obuf);
/* Close of file descriptor. */
if (peer->fd >= 0)
{
close (peer->fd);
peer->fd = -1;
}
/* Connection information. */
if (peer->su_local)
{
XFREE (MTYPE_SOCKUNION, peer->su_local);
peer->su_local = NULL;
}
if (peer->su_remote)
{
XFREE (MTYPE_SOCKUNION, peer->su_remote);
peer->su_remote = NULL;
}
/* Clear remote router-id. */
peer->remote_id.s_addr = 0;
/* Reset all negotiated variables */
peer->afc_nego[AFI_IP][SAFI_UNICAST] = 0;
peer->afc_nego[AFI_IP][SAFI_MULTICAST] = 0;
peer->afc_nego[AFI_IP][SAFI_MPLS_VPN] = 0;
peer->afc_nego[AFI_IP6][SAFI_UNICAST] = 0;
peer->afc_nego[AFI_IP6][SAFI_MULTICAST] = 0;
peer->afc_adv[AFI_IP][SAFI_UNICAST] = 0;
peer->afc_adv[AFI_IP][SAFI_MULTICAST] = 0;
peer->afc_adv[AFI_IP][SAFI_MPLS_VPN] = 0;
peer->afc_adv[AFI_IP6][SAFI_UNICAST] = 0;
peer->afc_adv[AFI_IP6][SAFI_MULTICAST] = 0;
peer->afc_recv[AFI_IP][SAFI_UNICAST] = 0;
peer->afc_recv[AFI_IP][SAFI_MULTICAST] = 0;
peer->afc_recv[AFI_IP][SAFI_MPLS_VPN] = 0;
peer->afc_recv[AFI_IP6][SAFI_UNICAST] = 0;
peer->afc_recv[AFI_IP6][SAFI_MULTICAST] = 0;
/* Reset route refresh flag. */
UNSET_FLAG (peer->cap, PEER_CAP_REFRESH_ADV);
UNSET_FLAG (peer->cap, PEER_CAP_REFRESH_OLD_RCV);
UNSET_FLAG (peer->cap, PEER_CAP_REFRESH_NEW_RCV);
UNSET_FLAG (peer->cap, PEER_CAP_DYNAMIC_ADV);
UNSET_FLAG (peer->cap, PEER_CAP_DYNAMIC_RCV);
for (afi = AFI_IP ; afi < AFI_MAX ; afi++)
for (safi = SAFI_UNICAST ; safi < SAFI_MAX ; safi++)
{
/* peer address family capability flags*/
peer->af_cap[afi][safi] = 0;
/* peer address family status flags*/
peer->af_sflags[afi][safi] = 0;
/* Received ORF prefix-filter */
peer->orf_plist[afi][safi] = NULL;
/* ORF received prefix-filter pnt */
sprintf (orf_name, "%s.%d.%d", peer->host, afi, safi);
prefix_bgp_orf_remove_all (orf_name);
}
UNSET_FLAG (peer->af_flags[AFI_IP][SAFI_UNICAST],
PEER_FLAG_DEFAULT_ORIGINATE_CHECK);
UNSET_FLAG (peer->af_flags[AFI_IP][SAFI_MULTICAST],
PEER_FLAG_DEFAULT_ORIGINATE_CHECK);
UNSET_FLAG (peer->af_flags[AFI_IP6][SAFI_UNICAST],
PEER_FLAG_DEFAULT_ORIGINATE_CHECK);
UNSET_FLAG (peer->af_flags[AFI_IP6][SAFI_MULTICAST],
PEER_FLAG_DEFAULT_ORIGINATE_CHECK);
/* Reset keepalive and holdtime */
if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER))
{
peer->v_keepalive = peer->keepalive;
peer->v_holdtime = peer->holdtime;
}
else
{
peer->v_keepalive = peer->bgp->default_keepalive;
peer->v_holdtime = peer->bgp->default_holdtime;
}
peer->update_time = 0;
/* Until we are sure that there is no problem about prefix count
this should be commented out.*/
#if 0
/* Reset prefix count */
peer->pcount[AFI_IP][SAFI_UNICAST] = 0;
peer->pcount[AFI_IP][SAFI_MULTICAST] = 0;
peer->pcount[AFI_IP][SAFI_MPLS_VPN] = 0;
peer->pcount[AFI_IP6][SAFI_UNICAST] = 0;
peer->pcount[AFI_IP6][SAFI_MULTICAST] = 0;
#endif /* 0 */
return 0;
}