sbin/dhcpagent/packet.c

155 init_pkt(dhcp_smach_t *dsmp, uchar_t type)
157 	dhcp_pkt_t	*dpkt = &dsmp->dsm_send_pkt;
158 	dhcp_lif_t	*lif = dsmp->dsm_lif;
206 		if (dsmp->dsm_cidlen > 0 &&
207 		    add_pkt_opt(dpkt, DHCPV6_OPT_CLIENTID, dsmp->dsm_cid,
208 		    dsmp->dsm_cidlen) == NULL) {
215 		dsmp->dsm_neg_hrtime = gethrtime();
216 		dsmp->dsm_newstart_monosec = monosec();
254 			    !is_bound_state(dsmp->dsm_state)))
268 		if (dsmp->dsm_cidlen > 0 &&
269 		    add_pkt_opt(dpkt, CD_CLIENT_ID, dsmp->dsm_cid,
270 		    dsmp->dsm_cidlen) == NULL) {
589 add_pkt_prl(dhcp_pkt_t *dpkt, dhcp_smach_t *dsmp)
593 	if (dsmp->dsm_prllen == 0)
603 		if (dsmp->dsm_prllen == 0)
606 			prl = alloca(dsmp->dsm_prllen * sizeof (uint16_t));
608 		for (len = 0; len < dsmp->dsm_prllen; len++)
609 			prl[len] = htons(dsmp->dsm_prl[len]);
613 		uint8_t *prl = alloca(dsmp->dsm_prllen);
615 		for (len = 0; len < dsmp->dsm_prllen; len++)
616 			prl[len] = dsmp->dsm_prl[len];
636 		dhcp_smach_t *dsmp;
649 		dsmp = lif->lif_lease->dl_smach;
650 		iaid = dsmp->dsm_lif->lif_iaid;
797 send_pkt_internal(dhcp_smach_t *dsmp)
800 	dhcp_lif_t	*lif = dsmp->dsm_lif;
801 	dhcp_pkt_t	*dpkt = &dsmp->dsm_send_pkt;
814 	if (dsmp->dsm_retrans_timer != -1) {
816 		    "timer on %s", dsmp->dsm_name);
817 		stop_pkt_retransmission(dsmp);
830 	if (dsmp->dsm_send_timeout != 0) {
831 		if ((dsmp->dsm_retrans_timer = iu_schedule_timer_ms(tq,
832 		    dsmp->dsm_send_timeout, retransmit, dsmp)) == -1)
837 			hold_smach(dsmp);
848 		delta = (gethrtime() - dsmp->dsm_neg_hrtime) /
878 			dsmp->dsm_newstart_monosec = monosec();
879 			dsmp->dsm_disc_secs = dsmp->dsm_newstart_monosec -
880 			    hrtime_to_monosec(dsmp->dsm_neg_hrtime);
881 			dpkt->pkt->secs = htons(dsmp->dsm_disc_secs);
886 			    hrtime_to_monosec(dsmp->dsm_neg_hrtime));
890 			dsmp->dsm_newstart_monosec = monosec();
892 			if (dsmp->dsm_state == REQUESTING) {
893 				dpkt->pkt->secs = htons(dsmp->dsm_disc_secs);
898 			    hrtime_to_monosec(dsmp->dsm_neg_hrtime));
915 		msg.msg_name = &dsmp->dsm_send_dest.v6;
924 		if (IN6_IS_ADDR_MULTICAST(&dsmp->dsm_send_dest.v6.sin6_addr)) {
932 			dinfo.dir_daddr = dsmp->dsm_send_dest.v6.sin6_addr;
947 				sin6 = dsmp->dsm_send_dest.v6;
987 		    (struct sockaddr *)&dsmp->dsm_send_dest.v4,
993 		if (dsmp->dsm_retrans_timer == -1)
999 			    pkt_name, dsmp->dsm_send_timeout / MILLISEC);
1004 	    pkt_get_xid(dpkt->pkt, dpkt->pkt_isv6), dsmp->dsm_name);
1006 	dsmp->dsm_packet_sent++;
1007 	dsmp->dsm_sent++;
1024 send_pkt(dhcp_smach_t *dsmp, dhcp_pkt_t *dpkt, in_addr_t dest,
1034 	dsmp->dsm_packet_sent = 0;
1036 	(void) memset(&dsmp->dsm_send_dest.v4, 0,
1037 	    sizeof (dsmp->dsm_send_dest.v4));
1038 	dsmp->dsm_send_dest.v4.sin_addr.s_addr	= dest;
1039 	dsmp->dsm_send_dest.v4.sin_family	= AF_INET;
1040 	dsmp->dsm_send_dest.v4.sin_port		= htons(IPPORT_BOOTPS);
1041 	dsmp->dsm_send_stop_func		= stop;
1048 	assert(dpkt == &dsmp->dsm_send_pkt);
1055 	free_pkt_list(&dsmp->dsm_recv_pkt_list);
1058 		dsmp->dsm_send_timeout = 0;	/* prevents retransmissions */
1060 		next_retransmission(dsmp, B_TRUE, B_FALSE);
1062 	return (send_pkt_internal(dsmp));
1080 send_pkt_v6(dhcp_smach_t *dsmp, dhcp_pkt_t *dpkt, in6_addr_t dest,
1083 	dsmp->dsm_packet_sent = 0;
1085 	(void) memset(&dsmp->dsm_send_dest.v6, 0,
1086 	    sizeof (dsmp->dsm_send_dest.v6));
1087 	dsmp->dsm_send_dest.v6.sin6_addr	= dest;
1088 	dsmp->dsm_send_dest.v6.sin6_family	= AF_INET6;
1089 	dsmp->dsm_send_dest.v6.sin6_port	= htons(IPPORT_DHCPV6S);
1090 	dsmp->dsm_send_stop_func		= stop;
1097 	assert(dpkt == &dsmp->dsm_send_pkt);
1104 	free_pkt_list(&dsmp->dsm_recv_pkt_list);
1107 		dsmp->dsm_send_timeout = 0;	/* prevents retransmissions */
1109 		dsmp->dsm_send_timeout = irt;
1110 		dsmp->dsm_send_tcenter = mrt;
1116 		next_retransmission(dsmp, B_TRUE,
1120 	return (send_pkt_internal(dsmp));
1135 	dhcp_smach_t	*dsmp = arg;
1137 	dsmp->dsm_retrans_timer = -1;
1139 	if (!verify_smach(dsmp))
1154 	next_retransmission(dsmp, B_FALSE, B_FALSE);
1155 	hold_smach(dsmp);
1156 	if (dsmp->dsm_send_stop_func(dsmp, dsmp->dsm_packet_sent)) {
1158 		    dsmp->dsm_name);
1161 		    dsmp->dsm_name);
1162 		(void) send_pkt_internal(dsmp);
1164 	release_smach(dsmp);
1175 stop_pkt_retransmission(dhcp_smach_t *dsmp)
1177 	if (dsmp->dsm_retrans_timer != -1 &&
1178 	    iu_cancel_timer(tq, dsmp->dsm_retrans_timer, NULL) == 1) {
1180 		    dsmp->dsm_name);
1181 		dsmp->dsm_retrans_timer = -1;
1182 		release_smach(dsmp);
1196 retransmit_now(dhcp_smach_t *dsmp)
1198 	stop_pkt_retransmission(dsmp);
1199 	(void) send_pkt_internal(dsmp);
1413 pkt_smach_enqueue(dhcp_smach_t *dsmp, PKT_LIST *plp)
1416 	    pkt_type_to_string(pkt_recv_type(plp), dsmp->dsm_isv6),
1417 	    dsmp->dsm_isv6 ? "v6" : "v4", dsmp->dsm_name);
1420 	insque(plp, &dsmp->dsm_recv_pkt_list);
1435 next_retransmission(dhcp_smach_t *dsmp, boolean_t first_send,
1440 	if (dsmp->dsm_isv6) {
1455 		timeout_ms = dsmp->dsm_send_timeout;
1458 		timeout_ms += (int)(randval * dsmp->dsm_send_timeout);
1461 		if (dsmp->dsm_send_tcenter != 0 &&
1462 		    timeout_ms > dsmp->dsm_send_tcenter) {
1463 			timeout_ms = dsmp->dsm_send_tcenter +
1464 			    (uint_t)(randval * dsmp->dsm_send_tcenter);
1467 		dsmp->dsm_send_timeout = timeout_ms;
1469 		if (dsmp->dsm_state == RENEWING ||
1470 		    dsmp->dsm_state == REBINDING) {
1473 			timeout_ms = dsmp->dsm_state == RENEWING ?
1474 			    dsmp->dsm_leases->dl_t2.dt_start :
1475 			    dsmp->dsm_leases->dl_lifs->lif_expire.dt_start;
1476 			timeout_ms += dsmp->dsm_curstart_monosec;
1490 				timeout_ms = MIN(dsmp->dsm_send_tcenter << 1,
1495 		dsmp->dsm_send_tcenter = timeout_ms;
1501 		dsmp->dsm_send_timeout = timeout_ms +