olsr_scheduler(void)
{
OLSR_PRINTF(1, "Scheduler started - polling every %f ms\n", (double)olsr_cnf->pollrate);
/* Main scheduler loop */
while (true) {
uint32_t next_interval;
/*
* Update the global timestamp. We are using a non-wallclock timer here
* to avoid any undesired side effects if the system clock changes.
*/
now_times = olsr_times();
next_interval = GET_TIMESTAMP(olsr_cnf->pollrate * 1000);
/* Read incoming data */
poll_sockets();
/* Process timers */
walk_timers(&timer_last_run);
/* Update */
olsr_process_changes();
/* Check for changes in topology */
if (link_changes) {
increase_local_ansn();
OLSR_PRINTF(3, "ANSN UPDATED %d\n\n", get_local_ansn());
link_changes = false;
}
/* Read incoming data and handle it immediiately */
handle_fds(next_interval);
#ifdef _WIN32
if (olsr_win32_end_request) {
olsr_win32_end_flag = true;
}
#endif /* _WIN32 */
}
}
static void olsr_shutdown(int signo __attribute__ ((unused)))
#endif
{
struct interface *ifn;
int exit_value;
OLSR_PRINTF(1, "Received signal %d - shutting down\n", (int)signo);
#ifdef WIN32
OLSR_PRINTF(1, "Waiting for the scheduler to stop.\n");
olsr_win32_end_request = TRUE;
while (!olsr_win32_end_flag)
Sleep(100);
OLSR_PRINTF(1, "Scheduler stopped.\n");
#endif
/* clear all links and send empty hellos/tcs */
olsr_reset_all_links();
/* deactivate fisheye and immediate TCs */
olsr_cnf->lq_fish = 0;
for (ifn = ifnet; ifn; ifn = ifn->int_next) {
ifn->immediate_send_tc = false;
}
increase_local_ansn();
/* send first shutdown message burst */
olsr_shutdown_messages();
/* delete all routes */
olsr_delete_all_kernel_routes();
/* send second shutdown message burst */
olsr_shutdown_messages();
/* now try to cleanup the rest of the mess */
olsr_delete_all_tc_entries();
olsr_delete_all_mid_entries();
#ifdef LINUX_NETLINK_ROUTING
/* trigger gateway selection */
if (olsr_cnf->smart_gw_active) {
olsr_cleanup_gateways();
}
/* trigger niit static route cleanup */
if (olsr_cnf->use_niit) {
olsr_cleanup_niit_routes();
}
/* cleanup lo:olsr interface */
if (olsr_cnf->use_src_ip_routes) {
olsr_os_localhost_if(&olsr_cnf->main_addr, false);
}
#endif
olsr_destroy_parser();
OLSR_PRINTF(1, "Closing sockets...\n");
/* front-end IPC socket */
if (olsr_cnf->ipc_connections > 0) {
shutdown_ipc();
}
/* OLSR sockets */
for (ifn = ifnet; ifn; ifn = ifn->int_next) {
close(ifn->olsr_socket);
close(ifn->send_socket);
#ifdef LINUX_NETLINK_ROUTING
if (DEF_RT_NONE != olsr_cnf->rt_table_defaultolsr_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version, olsr_cnf->rt_table_default,
olsr_cnf->rt_table_defaultolsr_pri, ifn->int_name, false);
}
#endif
}
/* Closing plug-ins */
olsr_close_plugins();
/* Reset network settings */
net_os_restore_ifoptions();
/* ioctl socket */
close(olsr_cnf->ioctl_s);
#ifdef LINUX_NETLINK_ROUTING
if (DEF_RT_NONE != olsr_cnf->rt_table_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version,
olsr_cnf->rt_table, olsr_cnf->rt_table_pri, NULL, false);
}
if (DEF_RT_NONE != olsr_cnf->rt_table_tunnel_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version,
olsr_cnf->rt_table_tunnel, olsr_cnf->rt_table_tunnel_pri, NULL, false);
}
if (DEF_RT_NONE != olsr_cnf->rt_table_default_pri) {
olsr_os_policy_rule(olsr_cnf->ip_version,
olsr_cnf->rt_table_default, olsr_cnf->rt_table_default_pri, NULL, false);
}
close(olsr_cnf->rtnl_s);
close (olsr_cnf->rt_monitor_socket);
#endif
#if defined __FreeBSD__ || defined __FreeBSD_kernel__ || defined __MacOSX__ || defined __NetBSD__ || defined __OpenBSD__
/* routing socket */
close(olsr_cnf->rts);
#endif
/* Free cookies and memory pools attached. */
OLSR_PRINTF(0, "Free all memory...\n");
olsr_delete_all_cookies();
olsr_syslog(OLSR_LOG_INFO, "%s stopped", olsrd_version);
OLSR_PRINTF(1, "\n <<<< %s - terminating >>>>\n http://www.olsr.org\n", olsrd_version);
exit_value = olsr_cnf->exit_value;
olsrd_free_cnf(olsr_cnf);
exit(exit_value);
}