100 #define	PREF(p, ifp) ((p) <= (uint32_t)(ifp)->int_metric ? ((p) != 0 ? 1 : 0) \  argument
101 	: (p) - ((ifp)->int_metric))
112     struct interface *ifp,  in trace_rdisc()  argument
129 		    ifp ? ifp->int_name : "?",  in trace_rdisc()
146 		    ifp ? ifp->int_name : "?",  in trace_rdisc()
216 set_rdisc_mg(struct interface *ifp,  in set_rdisc_mg()  argument
227 		if ((ifp->int_state & IS_NO_RDISC) == IS_NO_RDISC ||  in set_rdisc_mg()
233 	if (!(ifp->int_if_flags & IFF_MULTICAST)) {  in set_rdisc_mg()
235 		ifp->int_state &= ~(IS_ALL_HOSTS | IS_ALL_ROUTERS);  in set_rdisc_mg()
239 	dosupply = should_supply(ifp);  in set_rdisc_mg()
242 	m.imr_interface.s_addr = ((ifp->int_if_flags & IFF_POINTOPOINT) &&  in set_rdisc_mg()
243 	    (ifp->int_dstaddr != 0) ? ifp->int_dstaddr : ifp->int_addr);  in set_rdisc_mg()
244 	if (dosupply || (ifp->int_state & IS_NO_ADV_IN) || !on) {  in set_rdisc_mg()
246 		if (ifp->int_state & IS_ALL_HOSTS) {  in set_rdisc_mg()
252 			ifp->int_state &= ~IS_ALL_HOSTS;  in set_rdisc_mg()
255 	} else if (!(ifp->int_state & IS_ALL_HOSTS)) {  in set_rdisc_mg()
262 			ifp->int_state |= IS_ALL_HOSTS;  in set_rdisc_mg()
266 	if (!dosupply || (ifp->int_state & IS_NO_ADV_OUT) ||  in set_rdisc_mg()
267 	    !IS_IFF_ROUTING(ifp->int_if_flags) || !on) {  in set_rdisc_mg()
269 		if (ifp->int_state & IS_ALL_ROUTERS) {  in set_rdisc_mg()
275 			ifp->int_state &= ~IS_ALL_ROUTERS;  in set_rdisc_mg()
278 	} else if (!(ifp->int_state & IS_ALL_ROUTERS)) {  in set_rdisc_mg()
285 			ifp->int_state |= IS_ALL_ROUTERS;  in set_rdisc_mg()
297 	struct interface *ifp;  in set_supplier()  local
336 	for (ifp = ifnet; ifp; ifp = ifp->int_next) {  in set_supplier()
337 		if (ifp->int_state & IS_BROKE)  in set_supplier()
339 		ifp->int_rdisc_cnt = 0;  in set_supplier()
340 		ifp->int_rdisc_timer.tv_usec = rdisc_timer.tv_usec;  in set_supplier()
341 		ifp->int_rdisc_timer.tv_sec = now.tv_sec+MIN_WAITTIME;  in set_supplier()
342 		set_rdisc_mg(ifp, 1);  in set_supplier()
454 if_bad_rdisc(struct interface *ifp)  in if_bad_rdisc()  argument
459 		if (drp->dr_ifp != ifp)  in if_bad_rdisc()
494 if_ok_rdisc(struct interface *ifp)  in if_ok_rdisc()  argument
496 	set_rdisc_mg(ifp, 1);  in if_ok_rdisc()
498 	ifp->int_rdisc_cnt = 0;  in if_ok_rdisc()
499 	ifp->int_rdisc_timer.tv_sec = now.tv_sec +  in if_ok_rdisc()
500 	    ((ifp->int_state & IS_NO_ADV_OUT) ?  in if_ok_rdisc()
502 	if (timercmp(&rdisc_timer, &ifp->int_rdisc_timer, > /* cstyle */))  in if_ok_rdisc()
503 		rdisc_timer = ifp->int_rdisc_timer;  in if_ok_rdisc()
512 	struct interface *ifp;  in del_rdisc()  local
542 	ifp = drp->dr_ifp;  in del_rdisc()
544 		if (drp->dr_ts != 0 && drp->dr_ifp == ifp)  in del_rdisc()
556 		    naddr_ntoa(gate), ifp->int_name, i);  in del_rdisc()
557 	} else if (ifp->int_rdisc_cnt >= MAX_SOLICITATIONS) {  in del_rdisc()
560 		    naddr_ntoa(gate), ifp->int_name);  in del_rdisc()
561 		ifp->int_rdisc_cnt = 0;  in del_rdisc()
562 		ifp->int_rdisc_timer.tv_sec = 0;  in del_rdisc()
567 		    naddr_ntoa(gate), ifp->int_name);  in del_rdisc()
579 	struct interface *ifp;  in rdisc_sort()  local
636 		ifp = drp->dr_ifp;  in rdisc_sort()
650 		drp->dr_pref = PREF(drp->dr_recv_pref, ifp);  in rdisc_sort()
879     struct interface *ifp)  in parse_ad()  argument
899 	if (!on_net(gate, ifp->int_net, ifp->int_mask)) {  in parse_ad()
917 		if ((drp->dr_gate == gate) && (drp->dr_ifp == ifp)) {  in parse_ad()
931 			if ((!(ifp->int_state & IS_SICK) &&  in parse_ad()
934 			    !((ifp->int_state ^ drp->dr_ifp->int_state) &  in parse_ad()
966 	new_drp->dr_ifp = ifp;  in parse_ad()
972 	new_drp->dr_pref = PREF(pref, ifp);  in parse_ad()
975 	if (!(ifp->int_state & IS_SICK))  in parse_ad()
976 		ifp->int_rdisc_cnt = MAX_SOLICITATIONS;  in parse_ad()
1006     struct interface *ifp,  in send_rdisc()  argument
1020 	if (ifp->int_state & IS_DUP)  in send_rdisc()
1035 		if (ifp->int_if_flags & IFF_POINTOPOINT) {  in send_rdisc()
1037 			if (ifp->int_dstaddr == 0)  in send_rdisc()
1040 				sin.sin_addr.s_addr = ifp->int_dstaddr;  in send_rdisc()
1043 			sin.sin_addr.s_addr = ifp->int_brdaddr;  in send_rdisc()
1056 	ifindex = (type != mcast && ifp->int_phys != NULL) ?  in send_rdisc()
1057 	    ifp->int_phys->phyi_index : 0;  in send_rdisc()
1059 	if (rdisc_sock_interface != ifp) {  in send_rdisc()
1065 		addr.s_addr = (ifp->int_if_flags & IFF_POINTOPOINT) ?  in send_rdisc()
1066 		    ifp->int_dstaddr : ifp->int_addr;  in send_rdisc()
1073 		rdisc_sock_interface = ifp;  in send_rdisc()
1076 	trace_rdisc(msg, ifp->int_addr, sin.sin_addr.s_addr, ifp, p, p_size);  in send_rdisc()
1079 		if (!(ifp->int_state & IS_BROKE))  in send_rdisc()
1081 			    ifp->int_name, ", ",  in send_rdisc()
1084 		if (ifp != NULL)  in send_rdisc()
1085 			if_sick(ifp, _B_FALSE);  in send_rdisc()
1092 send_adv(struct interface *ifp,  in send_adv()  argument
1098 	if ((ifp->int_state & (IS_SUPPRESS_RDISC|IS_FLUSH_RDISC)) ==  in send_adv()
1109 	u.ad.icmp_ad_life = (stopint || !should_supply(ifp) ||  in send_adv()
1110 	    (ifp->int_state & IS_SUPPRESS_RDISC)) ? 0 :  in send_adv()
1111 	    htons(ifp->int_rdisc_int*3);  in send_adv()
1114 	u.ad.icmp_ad_info[0].icmp_ad_pref = htonl(ifp->int_rdisc_pref);  in send_adv()
1116 	u.ad.icmp_ad_info[0].icmp_ad_addr = ifp->int_addr;  in send_adv()
1120 	send_rdisc(&u, sizeof (u.ad), ifp, dst, type);  in send_adv()
1122 	if (ifp->int_state & IS_SUPPRESS_RDISC)  in send_adv()
1123 		ifp->int_state &= ~IS_FLUSH_RDISC;  in send_adv()
1131 	struct interface *ifp;  in rdisc_adv()  local
1138 	for (ifp = ifnet; ifp; ifp = ifp->int_next) {  in rdisc_adv()
1139 		if ((ifp->int_state & (IS_NO_ADV_OUT | IS_BROKE)) ||  in rdisc_adv()
1140 		    (!forceadv && !IS_IFF_ROUTING(ifp->int_if_flags)))  in rdisc_adv()
1144 		if (IS_IFF_QUIET(ifp->int_if_flags))  in rdisc_adv()
1147 		if (!timercmp(&ifp->int_rdisc_timer, &now, > /* cstyle */) ||  in rdisc_adv()
1149 			send_adv(ifp, htonl(INADDR_ALLHOSTS_GROUP),  in rdisc_adv()
1150 			    (ifp->int_state & IS_BCAST_RDISC) ? 1 : 2);  in rdisc_adv()
1151 			ifp->int_rdisc_cnt++;  in rdisc_adv()
1153 			intvl_random(&ifp->int_rdisc_timer,  in rdisc_adv()
1154 			    (ifp->int_rdisc_int*3)/4, ifp->int_rdisc_int);  in rdisc_adv()
1155 			if (ifp->int_rdisc_cnt < MAX_INITIAL_ADVERTS &&  in rdisc_adv()
1156 			    (ifp->int_rdisc_timer.tv_sec >  in rdisc_adv()
1158 				ifp->int_rdisc_timer.tv_sec =  in rdisc_adv()
1161 			timevaladd(&ifp->int_rdisc_timer, &now);  in rdisc_adv()
1163 		if (timercmp(&rdisc_timer, &ifp->int_rdisc_timer,  in rdisc_adv()
1165 			rdisc_timer = ifp->int_rdisc_timer;  in rdisc_adv()
1174 	struct interface *ifp;  in rdisc_sol()  local
1182 	for (ifp = ifnet; ifp; ifp = ifp->int_next) {  in rdisc_sol()
1183 		if (0 != (ifp->int_state & (IS_NO_SOL_OUT | IS_BROKE)) ||  in rdisc_sol()
1184 		    ifp->int_rdisc_cnt >= MAX_SOLICITATIONS)  in rdisc_sol()
1188 		if (IS_IFF_QUIET(ifp->int_if_flags))  in rdisc_sol()
1191 		if (!timercmp(&ifp->int_rdisc_timer, &now, > /* cstyle */)) {  in rdisc_sol()
1196 			send_rdisc(&u, sizeof (u.so), ifp,  in rdisc_sol()
1198 			    ((ifp->int_state&IS_BCAST_RDISC) ? bcast : mcast));  in rdisc_sol()
1200 			if (++ifp->int_rdisc_cnt >= MAX_SOLICITATIONS)  in rdisc_sol()
1203 			ifp->int_rdisc_timer.tv_sec = SOLICITATION_INTERVAL;  in rdisc_sol()
1204 			ifp->int_rdisc_timer.tv_usec = 0;  in rdisc_sol()
1205 			timevaladd(&ifp->int_rdisc_timer, &now);  in rdisc_sol()
1208 		if (timercmp(&rdisc_timer, &ifp->int_rdisc_timer,  in rdisc_sol()
1210 			rdisc_timer = ifp->int_rdisc_timer;  in rdisc_sol()
1222     struct interface *ifp,  in ck_icmp()  argument
1246 	trace_rdisc(act, from, to, ifp, p, len);  in ck_icmp()
1248 	if (ifp == NULL)  in ck_icmp()
1252 	return (ifp);  in ck_icmp()
1273 	struct interface *ifp;  in read_d()  local
1307 		ifp = receiving_interface(&msg, _B_FALSE);  in read_d()
1308 		ifp = ck_icmp("Recv", from.sin_addr.s_addr, ifp,  in read_d()
1310 		if (ifp == NULL)  in read_d()
1313 		if (IS_IFF_QUIET(ifp->int_if_flags)) {  in read_d()
1315 			    ifp->int_name, ifp->int_if_flags);  in read_d()
1327 		if (!remote_address_ok(ifp, from.sin_addr.s_addr)) {  in read_d()
1330 			    ifp->int_name);  in read_d()
1336 			if (ifp->int_state & IS_NO_ADV_IN)  in read_d()
1365 				    ntohs(p->ad.icmp_ad_life), ifp);  in read_d()
1372 			if (!should_supply(ifp))  in read_d()
1374 			if ((ifp->int_state & IS_NO_ADV_OUT) ||  in read_d()
1375 			    !IS_IFF_ROUTING(ifp->int_if_flags))  in read_d()
1386 			send_adv(ifp, from.sin_addr.s_addr, 0);  in read_d()
1406 rdisc_suppress(struct interface *ifp)  in rdisc_suppress()  argument
1408 	if (ifp->int_state & IS_ADV_OUT) {  in rdisc_suppress()
1410 		    "suppress rdisc adv", ifp->int_name);  in rdisc_suppress()
1412 		if (ifp->int_state & IS_SUPPRESS_RDISC)  in rdisc_suppress()
1414 		ifp->int_state |= (IS_SUPPRESS_RDISC|IS_FLUSH_RDISC);  in rdisc_suppress()
1415 		trace_misc("suppress rdisc adv on %s", ifp->int_name);  in rdisc_suppress()
1421 rdisc_restore(struct interface *ifp)  in rdisc_restore()  argument
1423 	if ((ifp->int_state & IS_SUPPRESS_RDISC) == 0)  in rdisc_restore()
1425 	ifp->int_state &= ~(IS_SUPPRESS_RDISC|IS_FLUSH_RDISC);  in rdisc_restore()
1426 	trace_misc("restoring rdisc adv on %s", ifp->int_name);  in rdisc_restore()