// If not currently shutting down
struct odhcpd_ipaddr addrs[RELAYD_MAX_PREFIXES];
ssize_t ipcnt = 0;
+ uint64_t maxpreferred = 0;
// If not shutdown
if (event->cb) {
for (ssize_t i = 0; i < ipcnt; ++i) {
struct odhcpd_ipaddr *addr = &addrs[i];
- if (addr->prefix > 64 || addr->has_class)
+ if (addr->prefix > 96 || addr->has_class)
continue; // Address not suitable
if (addr->preferred > MaxPreferredTime)
struct nd_opt_prefix_info *p = NULL;
for (size_t i = 0; i < cnt; ++i) {
- if (!memcmp(&adv.prefix[i].nd_opt_pi_prefix,
- &addr->addr, 8))
+ if (addr->prefix == adv.prefix[i].nd_opt_pi_prefix_len &&
+ !odhcpd_bmemcmp(&adv.prefix[i].nd_opt_pi_prefix,
+ &addr->addr, addr->prefix))
p = &adv.prefix[i];
}
p = &adv.prefix[cnt++];
}
- if ((addr->addr.s6_addr[0] & 0xfe) != 0xfc && addr->preferred > 0)
+ if ((addr->addr.s6_addr[0] & 0xfe) != 0xfc && addr->preferred > 0) {
have_public = true;
- memcpy(&p->nd_opt_pi_prefix, &addr->addr, 8);
+ if (maxpreferred < 1000 * addr->preferred)
+ maxpreferred = 1000 * addr->preferred;
+ }
+
+ odhcpd_bmemcpy(&p->nd_opt_pi_prefix, &addr->addr, addr->prefix);
p->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION;
p->nd_opt_pi_len = 4;
- p->nd_opt_pi_prefix_len = 64;
+ p->nd_opt_pi_prefix_len = (addr->prefix < 64) ? 64 : addr->prefix;
p->nd_opt_pi_flags_reserved = 0;
if (!iface->ra_not_onlink)
p->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_ONLINK;
- if (iface->managed < RELAYD_MANAGED_NO_AFLAG)
+ if (iface->managed < RELAYD_MANAGED_NO_AFLAG && addr->prefix <= 64)
p->nd_opt_pi_flags_reserved |= ND_OPT_PI_FLAG_AUTO;
p->nd_opt_pi_valid_time = htonl(addr->valid);
p->nd_opt_pi_preferred_time = htonl(addr->preferred);
odhcpd_send(router_event.uloop.fd,
&all_nodes, iov, ARRAY_SIZE(iov), iface);
- // Rearm timer
- int msecs;
- odhcpd_urandom(&msecs, sizeof(msecs));
- msecs = (labs(msecs) % (1000 * (MaxRtrAdvInterval
- - MinRtrAdvInterval))) + (MinRtrAdvInterval * 1000);
- uloop_timeout_set(&iface->timer_rs, msecs);
+ // Rearm timer if not shut down
+ if (event->cb) {
+ uint32_t maxinterval = MaxRtrAdvInterval * 1000;
+ uint32_t mininterval = MinRtrAdvInterval * 1000;
+
+ if (maxpreferred > 0 && maxinterval > maxpreferred / 2) {
+ maxinterval = maxpreferred / 2;
+ if (maxinterval < 4000)
+ maxinterval = 4000;
+
+ if (maxinterval >= 9000)
+ mininterval = maxinterval / 3;
+ else
+ mininterval = (maxinterval * 3) / 4;
+ }
+
+ int msecs;
+ odhcpd_urandom(&msecs, sizeof(msecs));
+ msecs = (labs(msecs) % (maxinterval - mininterval)) + mininterval;
+ uloop_timeout_set(&iface->timer_rs, msecs);
+ }
}