Function sctp_get_ifa_hash_val

freebsd/netinet/sctputil.c:5270–5302

}

uint32_t
sctp_get_ifa_hash_val(struct sockaddr *addr)
{
	switch (addr->sa_family) {
#ifdef INET
	case AF_INET:
		{
			struct sockaddr_in *sin;

			sin = (struct sockaddr_in *)addr;
			return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
		}
#endif
#ifdef INET6
	case AF_INET6:
		{
			struct sockaddr_in6 *sin6;
			uint32_t hash_of_addr;

			sin6 = (struct sockaddr_in6 *)addr;
			hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
			    sin6->sin6_addr.s6_addr32[1] +
			    sin6->sin6_addr.s6_addr32[2] +
			    sin6->sin6_addr.s6_addr32[3]);
			hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
			return (hash_of_addr);
		}
#endif
	default:
		break;
	}
	return (0);
}

struct sctp_ifa *
sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)