static void
circuit_commence_level (struct isis_circuit *circuit, int level)
{
if (level == 1)
{
if (! circuit->is_passive)
THREAD_TIMER_ON (master, circuit->t_send_psnp[0], send_l1_psnp, circuit,
isis_jitter (circuit->psnp_interval[0], PSNP_JITTER));
if (circuit->circ_type == CIRCUIT_T_BROADCAST)
{
THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[0], isis_run_dr_l1,
circuit, 2 * circuit->hello_interval[0]);
THREAD_TIMER_ON (master, circuit->u.bc.t_send_lan_hello[0],
send_lan_l1_hello, circuit,
isis_jitter (circuit->hello_interval[0],
IIH_JITTER));
circuit->u.bc.lan_neighs[0] = list_new ();
}
}
else
{
if (! circuit->is_passive)
THREAD_TIMER_ON (master, circuit->t_send_psnp[1], send_l2_psnp, circuit,
isis_jitter (circuit->psnp_interval[1], PSNP_JITTER));
if (circuit->circ_type == CIRCUIT_T_BROADCAST)
{
THREAD_TIMER_ON (master, circuit->u.bc.t_run_dr[1], isis_run_dr_l2,
circuit, 2 * circuit->hello_interval[1]);
THREAD_TIMER_ON (master, circuit->u.bc.t_send_lan_hello[1],
send_lan_l2_hello, circuit,
isis_jitter (circuit->hello_interval[1],
IIH_JITTER));
circuit->u.bc.lan_neighs[1] = list_new ();
}
}
return;
}
void isis_pdu_runner(u_char *user, const struct pcap_pkthdr *pkthdr, const u_char *buf)
{
struct pcap_isis_callback_data *cb_data = (struct pcap_isis_callback_data *) user;
struct pcap_device *device = cb_data->device;
struct isis_circuit *circuit = cb_data->circuit;
struct packet_ptrs pptrs;
struct thread thread;
int ret;
struct stream stm;
char *ssnpa;
/* Let's export a time reference */
memcpy(&isis_now, &pkthdr->ts, sizeof(struct timeval));
/* check if we have to expire adjacency first */
if (circuit && circuit->u.p2p.neighbor) {
if (timeval_cmp(&isis_now, &circuit->u.p2p.neighbor->expire) >= 0)
isis_adj_expire(circuit->u.p2p.neighbor);
}
memset(&pptrs, 0, sizeof(pptrs));
memset(&stm, 0, sizeof(stm));
if (buf) {
pptrs.pkthdr = (struct pcap_pkthdr *) pkthdr;
pptrs.packet_ptr = (u_char *) buf;
(*device->data->handler)(pkthdr, &pptrs);
if (pptrs.iph_ptr) {
if ((*pptrs.l3_handler)(&pptrs)) {
/*assembling handover to isis_handle_pdu() */
stm.data = pptrs.iph_ptr;
stm.getp = 0;
stm.endp = pkthdr->caplen - (pptrs.iph_ptr - pptrs.packet_ptr);
stm.size = pkthdr->caplen - (pptrs.iph_ptr - pptrs.packet_ptr);
ssnpa = pptrs.packet_ptr;
circuit->rcv_stream = &stm;
circuit->interface->mtu = config.nfacctd_isis_mtu;
/* process IS-IS packet */
isis_handle_pdu (circuit, ssnpa);
}
}
}
/* check if it's time to run SPF */
if (timeval_cmp(&isis_now, &isis_spf_deadline) >= 0) {
if (circuit->area->is_type & IS_LEVEL_1) {
if (circuit->area->ip_circuits) {
ret = isis_run_spf(circuit->area, 1, AF_INET);
isis_route_validate_table (circuit->area, circuit->area->route_table[0]);
}
/* XXX: IPv6 handled here */
}
if (circuit->area->is_type & IS_LEVEL_2) {
if (circuit->area->ip_circuits) {
ret = isis_run_spf(circuit->area, 2, AF_INET);
isis_route_validate_table (circuit->area, circuit->area->route_table[1]);
}
/* XXX: IPv6 handled here */
}
isis_route_validate_merge (circuit->area, AF_INET);
dyn_cache_cleanup();
isis_spf_deadline.tv_sec = isis_now.tv_sec + isis_jitter(PERIODIC_SPF_INTERVAL, 10);
isis_spf_deadline.tv_usec = 0;
}
if (timeval_cmp(&isis_now, &isis_psnp_deadline) >= 0) {
send_psnp(1, circuit);
send_psnp(2, circuit);
isis_psnp_deadline.tv_sec = isis_now.tv_sec + isis_jitter(PSNP_INTERVAL, PSNP_JITTER);
isis_psnp_deadline.tv_usec = 0;
}
}
