sbin/dhcpagent/request.c

62 send_v6_request(dhcp_smach_t *dsmp)
67 	dpkt = init_pkt(dsmp, DHCPV6_MSG_REQUEST);
68 	(void) add_pkt_opt(dpkt, DHCPV6_OPT_SERVERID, dsmp->dsm_serverid,
69 	    dsmp->dsm_serveridlen);
72 	d6in.d6in_iaid = htonl(dsmp->dsm_lif->lif_iaid);
80 	(void) add_pkt_prl(dpkt, dsmp);
82 	(void) send_pkt_v6(dsmp, dpkt, dsmp->dsm_server, stop_requesting,
86 	(void) set_smach_state(dsmp, REQUESTING);
100 server_unicast_option(dhcp_smach_t *dsmp, PKT_LIST *plp)
110 	} else if (olen != sizeof (dsmp->dsm_server)) {
129 			dsmp->dsm_server = addr;
150 	dhcp_smach_t		*dsmp = arg;
154 	boolean_t		isv6 = dsmp->dsm_isv6;
164 		    isv6 ? 6 : 4, dsmp->dsm_name);
165 		dsmp->dsm_offer_timer = -1;
166 		if (!verify_smach(dsmp))
169 		cancel_offer_timer(dsmp);
176 	offer = select_best(dsmp);
181 		    dsmp->dsm_name);
188 		if ((dsmp->dsm_offer_timer = iu_schedule_timer(tq,
189 		    dsmp->dsm_offer_wait, dhcp_requesting, dsmp)) == -1) {
199 			    "%s", dsmp->dsm_name);
201 			stop_pkt_retransmission(dsmp);
202 			(void) set_smach_state(dsmp, INIT);
203 			dsmp->dsm_dflags |= DHCP_IF_FAILED;
204 			ipc_action_finish(dsmp, DHCP_IPC_E_MEMORY);
206 			hold_smach(dsmp);
220 		free_pkt_list(&dsmp->dsm_recv_pkt_list);
224 	stop_pkt_retransmission(dsmp);
231 		free_pkt_list(&dsmp->dsm_recv_pkt_list);
233 		if (!set_smach_state(dsmp, REQUESTING)) {
234 			dhcp_restart(dsmp);
238 		if (!dhcp_bound(dsmp, offer)) {
240 			    "failed for %s", dsmp->dsm_name);
241 			dhcp_restart(dsmp);
257 		print_server_msg(dsmp, msg, msglen);
260 		if (!save_server_id(dsmp, offer))
268 		server_unicast_option(dsmp, offer);
270 		send_v6_request(dsmp);
274 			print_server_msg(dsmp,
284 		dpkt = init_pkt(dsmp, REQUEST);
298 		    htons(dsmp->dsm_lif->lif_max - sizeof (struct udpiphdr)));
309 		(void) add_pkt_prl(dpkt, dsmp);
316 		if (dsmp->dsm_reqhost != NULL) {
317 			(void) add_pkt_opt(dpkt, CD_HOSTNAME, dsmp->dsm_reqhost,
318 			    strlen(dsmp->dsm_reqhost));
327 		if (!set_smach_state(dsmp, REQUESTING)) {
330 			    dsmp->dsm_name);
334 		(void) send_pkt(dsmp, dpkt, htonl(INADDR_BROADCAST),
344 	dsmp->dsm_dflags |= DHCP_IF_FAILED;
345 	(void) set_smach_state(dsmp, INIT);
346 	ipc_action_finish(dsmp, DHCP_IPC_E_MEMORY);
347 	free_pkt_list(&dsmp->dsm_recv_pkt_list);
360 compute_points_v6(const PKT_LIST *pkt, const dhcp_smach_t *dsmp)
392 		    abuf, sizeof (abuf)), dsmp->dsm_name);
429 	for (i = 0; i < dsmp->dsm_prllen; i++) {
430 		if (dhcpv6_pkt_option(pkt, NULL, dsmp->dsm_prl[i], NULL) !=
532 select_best(dhcp_smach_t *dsmp)
534 	PKT_LIST	*current = dsmp->dsm_recv_pkt_list;
556 		    compute_points_v6(current, dsmp) :
606 accept_v4_acknak(dhcp_smach_t *dsmp, PKT_LIST *plp)
609 	dsmp->dsm_received++;
612 		if (dsmp->dsm_state != INFORM_SENT &&
613 		    dsmp->dsm_state != INFORMATION &&
618 			    dsmp->dsm_name);
619 			dsmp->dsm_bad_offers++;
623 		if ((dsmp->dsm_state == RENEWING ||
624 		    dsmp->dsm_state == REBINDING) &&
625 		    dsmp->dsm_leases->dl_lifs->lif_addr !=
630 			dsmp->dsm_bad_offers++;
641 	stop_pkt_retransmission(dsmp);
645 		    dsmp->dsm_name);
646 		dsmp->dsm_bad_offers++;
648 		dhcp_restart(dsmp);
656 		(void) remove_hostconf(dsmp->dsm_name, dsmp->dsm_isv6);
663 		    "server id on %s", dsmp->dsm_name);
664 		dsmp->dsm_bad_offers++;
666 		dhcp_restart(dsmp);
671 		print_server_msg(dsmp, (char *)plp->opts[CD_MESSAGE]->value,
675 	dhcpmsg(MSG_VERBOSE, "accept_v4_acknak: ACK on %s", dsmp->dsm_name);
676 	if (!dhcp_bound(dsmp, plp)) {
678 		    "for %s", dsmp->dsm_name);
679 		dhcp_restart(dsmp);
695 accept_v6_message(dhcp_smach_t *dsmp, PKT_LIST *plp, const char *pname,
705 	dsmp->dsm_received++;
710 		    "on %s", dsmp->dsm_name);
720 	if (d6o == NULL || olen != dsmp->dsm_cidlen ||
721 	    memcmp(d6o + 1, dsmp->dsm_cid, olen) != 0) {
724 		    pname, dsmp->dsm_name, d6o == NULL ? "no" : "wrong");
744 		    pname, dsmp->dsm_name);
748 	if (recv_type == DHCPV6_MSG_REPLY && dsmp->dsm_state != SELECTING &&
749 	    dsmp->dsm_state != INIT_REBOOT && dsmp->dsm_state != REBINDING &&
750 	    dsmp->dsm_state != INFORM_SENT) {
752 		if (olen != dsmp->dsm_serveridlen ||
753 		    memcmp(d6o + 1, dsmp->dsm_serverid, olen) != 0) {
755 			    "%s: wrong Server ID", pname, dsmp->dsm_name);
766 	switch (dsmp->dsm_state) {
774 				    dsmp->dsm_name);
779 			    dsmp->dsm_name);
780 			cancel_offer_timer(dsmp);
796 			pkt_smach_enqueue(dsmp, plp);
798 			    " immediate Request on %s", dsmp->dsm_name);
799 			dhcp_requesting(NULL, dsmp);
801 			pkt_smach_enqueue(dsmp, plp);
825 		    dsmp->dsm_name);
844 			    &dsmp->dsm_send_dest.v6.sin6_addr)) {
848 				dsmp->dsm_send_dest.v6.sin6_addr =
850 				retransmit_now(dsmp);
854 		print_server_msg(dsmp, msg, msglen);
864 			if (dhcp_bound(dsmp, plp)) {
869 				server_unicast_option(dsmp, plp);
871 				stop_pkt_retransmission(dsmp);
873 				    "dhcp_bound failed for %s", dsmp->dsm_name);
874 				(void) remove_hostconf(dsmp->dsm_name,
875 				    dsmp->dsm_isv6);
876 				dhcp_restart(dsmp);
881 			stop_pkt_retransmission(dsmp);
883 			if (dsmp->dsm_state == INFORM_SENT) {
884 				(void) set_smach_state(dsmp, INIT);
885 				ipc_action_finish(dsmp, DHCP_IPC_E_SRVFAILED);
887 				(void) remove_hostconf(dsmp->dsm_name,
888 				    dsmp->dsm_isv6);
889 				request_failed(dsmp);
900 		stop_pkt_retransmission(dsmp);
909 			print_server_msg(dsmp, msg, msglen);
915 		if (dsmp->dsm_leases == NULL) {
917 			    "leases left", dsmp->dsm_name);
918 			dhcp_restart(dsmp);
919 		} else if (dsmp->dsm_lif_wait == 0) {
920 			(void) set_smach_state(dsmp, BOUND);
922 			(void) set_smach_state(dsmp, PRE_BOUND);
932 		stop_pkt_retransmission(dsmp);
940 			print_server_msg(dsmp, msg, msglen);
946 		finished_smach(dsmp, DHCP_IPC_SUCCESS);
955 	    pname, dsmp->dsm_name, dhcp_state_to_string(dsmp->dsm_state));
982 	dhcp_smach_t	*dsmp;
1006 	for (dsmp = lookup_smach_by_xid(xid, NULL, isv6); dsmp != NULL;
1007 	    dsmp = lookup_smach_by_xid(xid, dsmp, isv6)) {
1008 		pif = dsmp->dsm_lif->lif_pif;
1014 	if (dsmp == NULL) {
1033 		sock = dsmp->dsm_lif->lif_sock_ip_fd;
1047 		accept_v6_message(dsmp, plp, pname, recv_type);
1049 		accept_v4_acknak(dsmp, plp);
1067 request_failed(dhcp_smach_t *dsmp)
1071 	dsmp->dsm_server = ipv6_all_dhcp_relay_and_servers;
1072 	if ((offer = select_best(dsmp)) != NULL) {
1073 		insque(offer, &dsmp->dsm_recv_pkt_list);
1074 		dhcp_requesting(NULL, dsmp);
1077 		    dsmp->dsm_name);
1078 		dhcp_selecting(dsmp);
1104 	dhcp_smach_t	*dsmp;
1124 	for (dsmp = lookup_smach_by_xid(xid, NULL, B_FALSE); dsmp != NULL;
1125 	    dsmp = lookup_smach_by_xid(xid, dsmp, B_FALSE)) {
1126 		if (dsmp->dsm_lif == lif)
1130 	if (dsmp == NULL)
1138 		accept_v4_acknak(dsmp, plp);
1140 		if (is_bound_state(dsmp->dsm_state))
1146 		pkt_smach_enqueue(dsmp, plp);
1152 	    dsmp == NULL ? "unknown state machine" : "bound");
1166 dhcp_restart(dhcp_smach_t *dsmp)
1168 	if (dsmp->dsm_state == INFORM_SENT || dsmp->dsm_state == INFORMATION)
1179 	deprecate_leases(dsmp);
1181 	if (!set_start_timer(dsmp)) {
1183 		    "reverting to INIT state on %s", dsmp->dsm_name);
1185 		(void) set_smach_state(dsmp, INIT);
1186 		dsmp->dsm_dflags |= DHCP_IF_FAILED;
1187 		ipc_action_finish(dsmp, DHCP_IPC_E_MEMORY);
1190 		    dsmp->dsm_name);
1203 stop_requesting(dhcp_smach_t *dsmp, unsigned int n_requests)
1207 	maxreq = dsmp->dsm_isv6 ? DHCPV6_REQ_MAX_RC : DHCP_MAX_REQUESTS;
1211 		    dsmp->dsm_name);
1213 		request_failed(dsmp);