sys/nfs/bootp_subr.c

250 static void	bootpc_compose_query(struct bootpc_ifcontext *ifctx,
269 static void	bootpc_fakeup_interface(struct bootpc_ifcontext *ifctx,
272 static int	bootpc_adjust_interface(struct bootpc_ifcontext *ifctx,
276 		    struct bootpc_ifcontext *ifctx,
280 		    struct bootpc_ifcontext *ifctx);
282 static __inline int bootpc_ifctx_isresolved(struct bootpc_ifcontext *ifctx);
283 static __inline int bootpc_ifctx_isunresolved(struct bootpc_ifcontext *ifctx);
284 static __inline int bootpc_ifctx_isfailed(struct bootpc_ifcontext *ifctx);
431 	struct bootpc_ifcontext *ifctx;
433 	ifctx = malloc(sizeof(*ifctx), M_TEMP, M_WAITOK | M_ZERO);
434 	ifctx->xid = gctx->xid;
436 	ifctx->state = IF_BOOTP_UNRESOLVED;
438 	ifctx->state = IF_DHCP_UNRESOLVED;
441 	STAILQ_INSERT_TAIL(&gctx->interfaces, ifctx, next);
445 bootpc_ifctx_isresolved(struct bootpc_ifcontext *ifctx)
448 	if (ifctx->state == IF_BOOTP_RESOLVED ||
449 	    ifctx->state == IF_DHCP_RESOLVED)
455 bootpc_ifctx_isunresolved(struct bootpc_ifcontext *ifctx)
458 	if (ifctx->state == IF_BOOTP_UNRESOLVED ||
459 	    ifctx->state == IF_DHCP_UNRESOLVED)
465 bootpc_ifctx_isfailed(struct bootpc_ifcontext *ifctx)
468 	if (ifctx->state == IF_BOOTP_FAILED ||
469 	    ifctx->state == IF_DHCP_FAILED)
476     struct bootpc_ifcontext *ifctx)
502 	switch (ifctx->dhcpquerytype) {
520 	if ((ifctx->state == IF_BOOTP_RESOLVED ||
521 	     (ifctx->dhcpquerytype == DHCP_DISCOVER &&
522 	      (ifctx->state == IF_DHCP_OFFERED ||
523 	       ifctx->state == IF_DHCP_RESOLVED))) &&
524 	    (bootpc_tag(&gctx->tmptag, &ifctx->reply,
525 			ifctx->replylen,
532 	bcopy(&gctx->reply, &ifctx->reply, gctx->replylen);
533 	ifctx->replylen = gctx->replylen;
536 	if (ifctx->state == IF_BOOTP_UNRESOLVED)
537 		ifctx->state = IF_BOOTP_RESOLVED;
538 	else if (ifctx->state == IF_DHCP_UNRESOLVED &&
539 		 ifctx->dhcpquerytype == DHCP_DISCOVER) {
541 			ifctx->state = IF_DHCP_OFFERED;
543 			ifctx->state = IF_BOOTP_RESOLVED;	/* Fallback */
544 	} else if (ifctx->state == IF_DHCP_OFFERED &&
545 		   ifctx->dhcpquerytype == DHCP_REQUEST)
546 		ifctx->state = IF_DHCP_RESOLVED;
549 	if (ifctx->dhcpquerytype == DHCP_DISCOVER &&
550 	    ifctx->state != IF_BOOTP_RESOLVED) {
551 		p = bootpc_tag(&gctx->tmptag, &ifctx->reply,
552 			       ifctx->replylen, TAG_DHCP_SERVERID);
554 			memcpy(&ifctx->dhcpserver, p, 4);
555 			ifctx->gotdhcpserver = 1;
557 			ifctx->gotdhcpserver = 0;
561 	ifctx->gotrootpath = (bootpc_tag(&gctx->tmptag, &ifctx->reply,
562 					 ifctx->replylen,
564 	ifctx->gotgw = (bootpc_tag(&gctx->tmptag, &ifctx->reply,
565 				   ifctx->replylen,
567 	ifctx->gotnetmask = (bootpc_tag(&gctx->tmptag, &ifctx->reply,
568 					ifctx->replylen,
584 	struct bootpc_ifcontext *ifctx;
660 		STAILQ_FOREACH(ifctx, &gctx->interfaces, next) {
661 			if (bootpc_ifctx_isresolved(ifctx) != 0 &&
662 			    bootpc_tag(&gctx->tmptag, &ifctx->reply,
663 				       ifctx->replylen,
668 		STAILQ_FOREACH(ifctx, &gctx->interfaces, next) {
669 			struct in_aliasreq *ifra = &ifctx->iareq;
672 			ifctx->outstanding = 0;
673 			if (bootpc_ifctx_isresolved(ifctx)  != 0 &&
677 			if (bootpc_ifctx_isfailed(ifctx) != 0)
681 			ifctx->outstanding = 1;
684 			if ((ifctx->state == IF_DHCP_OFFERED &&
685 			     ifctx->dhcpquerytype != DHCP_REQUEST) ||
686 			    (ifctx->state == IF_DHCP_UNRESOLVED &&
687 			     ifctx->dhcpquerytype != DHCP_DISCOVER) ||
688 			    (ifctx->state == IF_BOOTP_UNRESOLVED &&
689 			     ifctx->dhcpquerytype != DHCP_NOMSG)) {
690 				ifctx->sentmsg = 0;
691 				bootpc_compose_query(ifctx, td);
696 			if (ifctx->sentmsg == 0) {
697 				switch(ifctx->dhcpquerytype) {
712 				       ifctx->ireq.ifr_name,
713 				       ifctx->sdl->sdl_alen,
714 				       (unsigned char *) LLADDR(ifctx->sdl),
716 				ifctx->sentmsg = 1;
719 			aio.iov_base = (caddr_t) &ifctx->call;
720 			aio.iov_len = sizeof(ifctx->call);
727 			auio.uio_resid = sizeof(ifctx->call);
789 			STAILQ_FOREACH(ifctx, &gctx->interfaces, next) {
790 				if (bootpc_ifctx_isresolved(ifctx) != 0 ||
791 				    bootpc_ifctx_isfailed(ifctx) != 0)
794 				ifctx->call.secs = htons(gctx->secs);
812 			STAILQ_FOREACH(ifctx, &gctx->interfaces, next) {
813 				if (gctx->reply.xid != ifctx->call.xid)
817 				if (gctx->reply.hlen != ifctx->call.hlen)
822 					 ifctx->call.chaddr,
823 					 ifctx->call.hlen) != 0)
829 			if (ifctx != NULL) {
852 				       ifctx->ireq.ifr_name);
859 				if (bootpc_received(gctx, ifctx) != 0) {
861 					if (ifctx->outstanding) {
862 						ifctx->outstanding = 0;
871 				if (ifctx->gotrootpath ||
876 					if (ifctx->gotrootpath)
888 		STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
889 			if (ifctx->state == IF_DHCP_OFFERED) {
890 				if (ifctx->dhcpquerytype == DHCP_DISCOVER)
893 					ifctx->state = IF_DHCP_UNRESOLVED;
911 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
912 		if (bootpc_ifctx_isresolved(ifctx) == 0) {
914 			       ifctx->dhcpquerytype != DHCP_NOMSG ?
916 			       ifctx->ireq.ifr_name);
927 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
928 		if (bootpc_ifctx_isresolved(ifctx) != 0) {
940 bootpc_fakeup_interface(struct bootpc_ifcontext *ifctx, struct thread *td)
947 	ifr = &ifctx->ireq;
948 	ifra = &ifctx->iareq;
983 bootpc_shutdown_interface(struct bootpc_ifcontext *ifctx, struct thread *td)
989 	ifr = &ifctx->ireq;
991 	printf("Shutdown interface %s\n", ifctx->ireq.ifr_name);
1008 bootpc_adjust_interface(struct bootpc_ifcontext *ifctx,
1021 	ifr = &ifctx->ireq;
1022 	ifra = &ifctx->iareq;
1023 	myaddr = &ifctx->myaddr;
1024 	netmask = &ifctx->netmask;
1025 	gw = &ifctx->gw;
1027 	if (bootpc_ifctx_isresolved(ifctx) == 0) {
1029 		bootpc_shutdown_interface(ifctx, td);
1033 	printf("Adjusted interface %s\n", ifctx->ireq.ifr_name);
1056 	if (ifctx->gotgw != 0 || gctx->gotgw == 0) {
1213 bootpc_compose_query(struct bootpc_ifcontext *ifctx, struct thread *td)
1220 	ifctx->gotrootpath = 0;
1222 	bzero((caddr_t) &ifctx->call, sizeof(ifctx->call));
1225 	ifctx->call.op = BOOTP_REQUEST; 	/* BOOTREQUEST */
1226 	ifctx->call.htype = 1;			/* 10mb ethernet */
1227 	ifctx->call.hlen = ifctx->sdl->sdl_alen;/* Hardware address length */
1228 	ifctx->call.hops = 0;
1229 	if (bootpc_ifctx_isunresolved(ifctx) != 0)
1230 		ifctx->xid++;
1231 	ifctx->call.xid = txdr_unsigned(ifctx->xid);
1232 	bcopy(LLADDR(ifctx->sdl), &ifctx->call.chaddr, ifctx->sdl->sdl_alen);
1234 	vendp = ifctx->call.vend;
1251 	ifctx->dhcpquerytype = DHCP_NOMSG;
1252 	switch (ifctx->state) {
1257 		ifctx->dhcpquerytype = DHCP_DISCOVER;
1258 		ifctx->gotdhcpserver = 0;
1264 		ifctx->dhcpquerytype = DHCP_REQUEST;
1267 		memcpy(vendp, &ifctx->reply.yiaddr, 4);
1269 		if (ifctx->gotdhcpserver != 0) {
1272 			memcpy(vendp, &ifctx->dhcpserver, 4);
1286 	ifctx->call.secs = 0;
1287 	ifctx->call.flags = htons(0x8000); /* We need a broadcast answer */
1375 bootpc_decode_reply(struct nfsv3_diskless *nd, struct bootpc_ifcontext *ifctx,
1381 	ifctx->gotgw = 0;
1382 	ifctx->gotnetmask = 0;
1384 	clear_sinaddr(&ifctx->myaddr);
1385 	clear_sinaddr(&ifctx->netmask);
1386 	clear_sinaddr(&ifctx->gw);
1388 	ifctx->myaddr.sin_addr = ifctx->reply.yiaddr;
1390 	ip = ntohl(ifctx->myaddr.sin_addr.s_addr);
1392 	printf("%s at ", ifctx->ireq.ifr_name);
1393 	print_sin_addr(&ifctx->myaddr);
1395 	print_in_addr(ifctx->reply.siaddr);
1397 	ifctx->gw.sin_addr = ifctx->reply.giaddr;
1398 	if (ifctx->reply.giaddr.s_addr != htonl(INADDR_ANY)) {
1400 		print_in_addr(ifctx->reply.giaddr);
1405 			  &ifctx->reply, ifctx->replylen, TAG_END);
1408 		if (ifctx->reply.sname[0] != '\0')
1409 			printf(" server name %s", ifctx->reply.sname);
1411 		if (ifctx->reply.file[0] != '\0')
1412 			printf(" boot file %s", ifctx->reply.file);
1416 	p = bootpc_tag(&gctx->tag, &ifctx->reply, ifctx->replylen,
1422 		bcopy(p, &ifctx->netmask.sin_addr, 4);
1423 		ifctx->gotnetmask = 1;
1425 		print_sin_addr(&ifctx->netmask);
1429 	p = bootpc_tag(&gctx->tag, &ifctx->reply, ifctx->replylen,
1436 			bcopy(p, &ifctx->gw.sin_addr, 4);
1438 			print_sin_addr(&ifctx->gw);
1440 			ifctx->gotgw = 1;
1460 		p = bootpc_tag(&gctx->tag, &ifctx->reply, ifctx->replylen,
1473 				  nd->root_hostnam, p, &ifctx->reply.siaddr)) {
1481 			ifctx->gotrootpath = 1;
1482 			gctx->setrootfs = ifctx;
1484 			p = bootpc_tag(&gctx->tag, &ifctx->reply,
1485 				       ifctx->replylen,
1495 	p = bootpc_tag(&gctx->tag, &ifctx->reply, ifctx->replylen,
1509 			gctx->sethostname = ifctx;
1512 	p = bootpc_tag(&gctx->tag, &ifctx->reply, ifctx->replylen,
1524 	if (ifctx->gotnetmask == 0) {
1525 		if (IN_CLASSA(ntohl(ifctx->myaddr.sin_addr.s_addr)))
1526 			ifctx->netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET);
1527 		else if (IN_CLASSB(ntohl(ifctx->myaddr.sin_addr.s_addr)))
1528 			ifctx->netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET);
1530 			ifctx->netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET);
1532 	if (ifctx->gotgw == 0) {
1534 		ifctx->gw.sin_addr.s_addr = ifctx->myaddr.sin_addr.s_addr;
1541 	struct bootpc_ifcontext *ifctx;		/* Interface BOOTP contexts */
1621 	ifctx = STAILQ_FIRST(&gctx->interfaces);
1624 		if (ifctx == NULL)
1643 		strlcpy(ifctx->ireq.ifr_name, ifp->if_xname,
1644 		    sizeof(ifctx->ireq.ifr_name));
1645 		ifctx->ifp = ifp;
1657 			    ifctx->ireq.ifr_name);
1658 		ifctx->sdl = sdl;
1660 		ifctx = STAILQ_NEXT(ifctx, next);
1685 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
1686 		bootpc_fakeup_interface(ifctx, td);
1688 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
1689 		bootpc_compose_query(ifctx, td);
1698 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
1699 		if (bootpc_ifctx_isresolved(ifctx) != 0)
1700 			bootpc_decode_reply(nd, ifctx, gctx);
1707 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
1708 		bootpc_adjust_interface(ifctx, gctx, td);
1712 	STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
1713 		if (ifctx->gotrootpath != 0)
1715 	if (ifctx == NULL) {
1716 		STAILQ_FOREACH(ifctx, &gctx->interfaces, next)
1717 			if (bootpc_ifctx_isresolved(ifctx) != 0)
1720 	if (ifctx == NULL)
1725 		setenv("boot.netif.name", ifctx->ifp->if_xname);
1743 	strcpy(nd->myif.ifra_name, ifctx->ireq.ifr_name);
1744 	bcopy(&ifctx->myaddr, &nd->myif.ifra_addr, sizeof(ifctx->myaddr));
1745 	bcopy(&ifctx->myaddr, &nd->myif.ifra_broadaddr, sizeof(ifctx->myaddr));
1747 		ifctx->myaddr.sin_addr.s_addr |
1748 		~ ifctx->netmask.sin_addr.s_addr;
1749 	bcopy(&ifctx->netmask, &nd->myif.ifra_mask, sizeof(ifctx->netmask));
1752 	while((ifctx = STAILQ_FIRST(&gctx->interfaces)) != NULL) {
1754 		free(ifctx, M_TEMP);