Function icmp6_ratelimit

freebsd/netinet6/icmp6.c:2789–2805

* Perform rate limit check. * Returns 0 if it is okay to send the icmp6 packet. * Returns 1 if the router SHOULD NOT send this icmp6 packet due to rate * limitation. * * XXX per-destination/type check necessary? * * dst - not used at this moment * type - not used at this moment * code - not used at this moment */

 * code - not used at this moment
 */
static int
icmp6_ratelimit(const struct in6_addr *dst, const int type,
    const int code)
{
	int ret;

	ret = 0;	/* okay to send */

	/* PPS limit */
	if (!ppsratecheck(&V_icmp6errppslim_last, &V_icmp6errpps_count,
	    V_icmp6errppslim)) {
		/* The packet is subject to rate limit */
		ret++;
	}

	return ret;
}