Function sctp_v4src_match_nexthop

freebsd/netinet/sctp_output.c:13812–13842

#endif

int
sctp_v4src_match_nexthop(struct sctp_ifa *sifa, sctp_route_t *ro)
{
#ifdef INET
	struct sockaddr_in *sin, *mask;
	struct ifaddr *ifa;
	struct in_addr srcnetaddr, gwnetaddr;

	if (ro == NULL || ro->ro_nh == NULL ||
	    sifa->address.sa.sa_family != AF_INET) {
		return (0);
	}
	ifa = (struct ifaddr *)sifa->ifa;
	mask = (struct sockaddr_in *)(ifa->ifa_netmask);
	sin = &sifa->address.sin;
	srcnetaddr.s_addr = (sin->sin_addr.s_addr & mask->sin_addr.s_addr);
	SCTPDBG(SCTP_DEBUG_OUTPUT1, "match_nexthop4: src address is ");
	SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, &sifa->address.sa);
	SCTPDBG(SCTP_DEBUG_OUTPUT1, "network address is %x\n", srcnetaddr.s_addr);

	sin = &ro->ro_nh->gw4_sa;
	gwnetaddr.s_addr = (sin->sin_addr.s_addr & mask->sin_addr.s_addr);
	SCTPDBG(SCTP_DEBUG_OUTPUT1, "match_nexthop4: nexthop is ");
	SCTPDBG_ADDR(SCTP_DEBUG_OUTPUT2, &ro->ro_nh->gw_sa);
	SCTPDBG(SCTP_DEBUG_OUTPUT1, "network address is %x\n", gwnetaddr.s_addr);
	if (srcnetaddr.s_addr == gwnetaddr.s_addr) {
		return (1);
	}
#endif
	return (0);
}