[unix-history] / usr / src / sys / netns / ns.c

/*
 * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)ns.c	7.7 (Berkeley) %G%
 */

#include "param.h"
#include "mbuf.h"
#include "ioctl.h"
#include "protosw.h"
#include "socket.h"
#include "socketvar.h"
#include "user.h"


#include "../net/if.h"
#include "../net/route.h"
#include "../net/af.h"

#include "ns.h"
#include "ns_if.h"

#ifdef NS

struct ns_ifaddr *ns_ifaddr;
int ns_interfaces;
extern struct sockaddr_ns ns_netmask, ns_hostmask;

/*
 * Generic internet control operations (ioctl's).
 */
/* ARGSUSED */
ns_control(so, cmd, data, ifp)
	struct socket *so;
	int cmd;
	caddr_t data;
	register struct ifnet *ifp;
{
	register struct ifreq *ifr = (struct ifreq *)data;
	register struct ns_aliasreq *ifra = (struct ns_aliasreq *)data;
	register struct ns_ifaddr *ia;
	struct ifaddr *ifa;
	struct ns_ifaddr *oia;
	struct mbuf *m;
	int error, dstIsNew, hostIsNew;

	/*
	 * Find address for this interface, if it exists.
	 */
	if (ifp == 0)
		return (EADDRNOTAVAIL);
	for (ia = ns_ifaddr; ia; ia = ia->ia_next)
		if (ia->ia_ifp == ifp)
			break;

	switch (cmd) {

	case SIOCGIFADDR:
		if (ia == (struct ns_ifaddr *)0)
			return (EADDRNOTAVAIL);
		*(struct sockaddr_ns *)&ifr->ifr_addr = ia->ia_addr;
		return (0);


	case SIOCGIFBRDADDR:
		if (ia == (struct ns_ifaddr *)0)
			return (EADDRNOTAVAIL);
		if ((ifp->if_flags & IFF_BROADCAST) == 0)
			return (EINVAL);
		*(struct sockaddr_ns *)&ifr->ifr_dstaddr = ia->ia_broadaddr;
		return (0);

	case SIOCGIFDSTADDR:
		if (ia == (struct ns_ifaddr *)0)
			return (EADDRNOTAVAIL);
		if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
			return (EINVAL);
		*(struct sockaddr_ns *)&ifr->ifr_dstaddr = ia->ia_dstaddr;
		return (0);
	}

	if (error = suser(u.u_cred, &u.u_acflag))
		return (error);

	switch (cmd) {
	case SIOCAIFADDR:
	case SIOCDIFADDR:
		if (ifra->ifra_addr.sns_family == AF_NS)
		    for (oia = ia; ia; ia = ia->ia_next) {
			if (ia->ia_ifp == ifp  &&
			    ns_neteq(ia->ia_addr.sns_addr,
				  ifra->ifra_addr.sns_addr))
			    break;
		    }
		if (cmd == SIOCDIFADDR && ia == 0)
			return (EADDRNOTAVAIL);
		/* FALLTHROUGH */

	case SIOCSIFADDR:
	case SIOCSIFDSTADDR:
		if (ia == (struct ns_ifaddr *)0) {
			m = m_getclr(M_WAIT, MT_IFADDR);
			if (m == (struct mbuf *)NULL)
				return (ENOBUFS);
			if (ia = ns_ifaddr) {
				for ( ; ia->ia_next; ia = ia->ia_next)
					;
				ia->ia_next = mtod(m, struct ns_ifaddr *);
			} else
				ns_ifaddr = mtod(m, struct ns_ifaddr *);
			ia = mtod(m, struct ns_ifaddr *);
			if (ifa = ifp->if_addrlist) {
				for ( ; ifa->ifa_next; ifa = ifa->ifa_next)
					;
				ifa->ifa_next = (struct ifaddr *) ia;
			} else
				ifp->if_addrlist = (struct ifaddr *) ia;
			ia->ia_ifp = ifp;
			ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;

			ia->ia_ifa.ifa_netmask =
				(struct sockaddr *)&ns_netmask;

			ia->ia_ifa.ifa_dstaddr =
				(struct sockaddr *)&ia->ia_dstaddr;
			if (ifp->if_flags & IFF_BROADCAST) {
				ia->ia_broadaddr.sns_family = AF_NS;
				ia->ia_broadaddr.sns_len = sizeof(ia->ia_addr);
				ia->ia_broadaddr.sns_addr.x_host = ns_broadhost;
			}
			ns_interfaces++;
		}
	}

	switch (cmd) {
		int error;

	case SIOCSIFDSTADDR:
		if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
			return (EINVAL);
		if (ia->ia_flags & IFA_ROUTE) {
			rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
			ia->ia_flags &= ~IFA_ROUTE;
		}
		if (ifp->if_ioctl) {
			error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, ia);
			if (error)
				return (error);
		}
		*(struct sockaddr *)&ia->ia_dstaddr = ifr->ifr_dstaddr;
		return (0);

	case SIOCSIFADDR:
		return (ns_ifinit(ifp, ia,
				(struct sockaddr_ns *)&ifr->ifr_addr, 1));

	case SIOCDIFADDR:
		ns_ifscrub(ifp, ia);
		if ((ifa = ifp->if_addrlist) == (struct ifaddr *)ia)
			ifp->if_addrlist = ifa->ifa_next;
		else {
			while (ifa->ifa_next &&
			       (ifa->ifa_next != (struct ifaddr *)ia))
				    ifa = ifa->ifa_next;
			if (ifa->ifa_next)
			    ifa->ifa_next = ((struct ifaddr *)ia)->ifa_next;
			else
				printf("Couldn't unlink nsifaddr from ifp\n");
		}
		oia = ia;
		if (oia == (ia = ns_ifaddr)) {
			ns_ifaddr = ia->ia_next;
		} else {
			while (ia->ia_next && (ia->ia_next != oia)) {
				ia = ia->ia_next;
			}
			if (ia->ia_next)
			    ia->ia_next = oia->ia_next;
			else
				printf("Didn't unlink nsifadr from list\n");
		}
		(void) m_free(dtom(oia));
		if (0 == --ns_interfaces) {
			/*
			 * We reset to virginity and start all over again
			 */
			ns_thishost = ns_zerohost;
		}
		return (0);
	
	case SIOCAIFADDR:
		dstIsNew = 0; hostIsNew = 1;
		if (ia->ia_addr.sns_family == AF_NS) {
			if (ifra->ifra_addr.sns_len == 0) {
				ifra->ifra_addr = ia->ia_addr;
				hostIsNew = 0;
			} else if (ns_neteq(ifra->ifra_addr.sns_addr,
					 ia->ia_addr.sns_addr))
				hostIsNew = 0;
		}
		if ((ifp->if_flags & IFF_POINTOPOINT) &&
		    (ifra->ifra_dstaddr.sns_family == AF_NS)) {
			if (hostIsNew == 0)
				ns_ifscrub(ifp, ia);
			ia->ia_dstaddr = ifra->ifra_dstaddr;
			dstIsNew  = 1;
		}
		if (ifra->ifra_addr.sns_family == AF_NS &&
					    (hostIsNew || dstIsNew))
			error = ns_ifinit(ifp, ia, &ifra->ifra_addr, 0);
		return (error);

	default:
		if (ifp->if_ioctl == 0)
			return (EOPNOTSUPP);
		return ((*ifp->if_ioctl)(ifp, cmd, data));
	}
}

/*
* Delete any previous route for an old address.
*/
ns_ifscrub(ifp, ia)
	register struct ifnet *ifp;
	register struct ns_ifaddr *ia; 
{
	if (ia->ia_flags & IFA_ROUTE) {
		if (ifp->if_flags & IFF_POINTOPOINT) {
			rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
		} else
			rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
		ia->ia_flags &= ~IFA_ROUTE;
	}
}
/*
 * Initialize an interface's internet address
 * and routing table entry.
 */
ns_ifinit(ifp, ia, sns, scrub)
	register struct ifnet *ifp;
	register struct ns_ifaddr *ia;
	register struct sockaddr_ns *sns;
{
	struct sockaddr_ns oldaddr;
	register union ns_host *h = &ia->ia_addr.sns_addr.x_host;
	int s = splimp(), error;

	/*
	 * Set up new addresses.
	 */
	oldaddr = ia->ia_addr;
	ia->ia_addr = *sns;
	/*
	 * The convention we shall adopt for naming is that
	 * a supplied address of zero means that "we don't care".
	 * if there is a single interface, use the address of that
	 * interface as our 6 byte host address.
	 * if there are multiple interfaces, use any address already
	 * used.
	 *
	 * Give the interface a chance to initialize
	 * if this is its first address,
	 * and to validate the address if necessary.
	 */
	if (ns_hosteqnh(ns_thishost, ns_zerohost)) {
		if (ifp->if_ioctl &&
		     (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) {
			ia->ia_addr = oldaddr;
			splx(s);
			return (error);
		}
		ns_thishost = *h;
	} else if (ns_hosteqnh(sns->sns_addr.x_host, ns_zerohost)
	    || ns_hosteqnh(sns->sns_addr.x_host, ns_thishost)) {
		*h = ns_thishost;
		if (ifp->if_ioctl &&
		     (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) {
			ia->ia_addr = oldaddr;
			splx(s);
			return (error);
		}
		if (!ns_hosteqnh(ns_thishost,*h)) {
			ia->ia_addr = oldaddr;
			splx(s);
			return (EINVAL);
		}
	} else {
		ia->ia_addr = oldaddr;
		splx(s);
		return (EINVAL);
	}
	/*
	 * Add route for the network.
	 */
	if (scrub) {
		ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
		ns_ifscrub(ifp, ia);
		ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
	}
	if (ifp->if_flags & IFF_POINTOPOINT)
		rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
	else {
		ia->ia_broadaddr.sns_addr.x_net = ia->ia_net;
		rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP);
	}
	ia->ia_flags |= IFA_ROUTE;
	return (0);
}

/*
 * Return address info for specified internet network.
 */
struct ns_ifaddr *
ns_iaonnetof(dst)
	register struct ns_addr *dst;
{
	register struct ns_ifaddr *ia;
	register struct ns_addr *compare;
	register struct ifnet *ifp;
	struct ns_ifaddr *ia_maybe = 0;
	union ns_net net = dst->x_net;

	for (ia = ns_ifaddr; ia; ia = ia->ia_next) {
		if (ifp = ia->ia_ifp) {
			if (ifp->if_flags & IFF_POINTOPOINT) {
				compare = &satons_addr(ia->ia_dstaddr);
				if (ns_hosteq(*dst, *compare))
					return (ia);
				if (ns_neteqnn(net, ia->ia_net))
					ia_maybe = ia;
			} else {
				if (ns_neteqnn(net, ia->ia_net))
					return (ia);
			}
		}
	}
	return (ia_maybe);
}
#endif
Commit	Line	Data
8ae0e4b4	1	/*
240edf1f KS	2	* Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
240edf1f KS	3	* All rights reserved.
8ae0e4b4	4	*
dbf0c423	5	* %sccs.include.redist.c%
240edf1f	6	*
dbf0c423	7	* @(#)ns.c 7.7 (Berkeley) %G%
8ae0e4b4	8	*/
de9bc7de KS	9
	10	#include "param.h"
	11	#include "mbuf.h"
	12	#include "ioctl.h"
	13	#include "protosw.h"
	14	#include "socket.h"
	15	#include "socketvar.h"
de9bc7de KS	16	#include "user.h"
	17
	18
	19	#include "../net/if.h"
	20	#include "../net/route.h"
	21	#include "../net/af.h"
	22
	23	#include "ns.h"
	24	#include "ns_if.h"
	25
	26	#ifdef NS
	27
	28	struct ns_ifaddr *ns_ifaddr;
4dcdd98e KS	29	int ns_interfaces;
4dcdd98e KS	30	extern struct sockaddr_ns ns_netmask, ns_hostmask;
de9bc7de KS	31
	32	/*
	33	* Generic internet control operations (ioctl's).
	34	*/
f97be0c9	35	/* ARGSUSED */
de9bc7de KS	36	ns_control(so, cmd, data, ifp)
	37	struct socket *so;
	38	int cmd;
	39	caddr_t data;
	40	register struct ifnet *ifp;
	41	{
	42	register struct ifreq ifr = (struct ifreq )data;
4dcdd98e	43	register struct ns_aliasreq ifra = (struct ns_aliasreq )data;
de9bc7de KS	44	register struct ns_ifaddr *ia;
de9bc7de KS	45	struct ifaddr *ifa;
4dcdd98e	46	struct ns_ifaddr *oia;
de9bc7de	47	struct mbuf *m;
dfe62cc7	48	int error, dstIsNew, hostIsNew;
de9bc7de	49
de9bc7de KS	50	/*
	51	* Find address for this interface, if it exists.
	52	*/
8b659320	53	if (ifp == 0)
4353fa68	54	return (EADDRNOTAVAIL);
de9bc7de KS	55	for (ia = ns_ifaddr; ia; ia = ia->ia_next)
	56	if (ia->ia_ifp == ifp)
	57	break;
	58
	59	switch (cmd) {
	60
	61	case SIOCGIFADDR:
4353fa68 KS	62	if (ia == (struct ns_ifaddr *)0)
4353fa68 KS	63	return (EADDRNOTAVAIL);
4dcdd98e	64	(struct sockaddr_ns )&ifr->ifr_addr = ia->ia_addr;
4353fa68 KS	65	return (0);
	66
	67
de9bc7de	68	case SIOCGIFBRDADDR:
4353fa68 KS	69	if (ia == (struct ns_ifaddr *)0)
	70	return (EADDRNOTAVAIL);
	71	if ((ifp->if_flags & IFF_BROADCAST) == 0)
	72	return (EINVAL);
4dcdd98e	73	(struct sockaddr_ns )&ifr->ifr_dstaddr = ia->ia_broadaddr;
4353fa68 KS	74	return (0);
4353fa68 KS	75
de9bc7de KS	76	case SIOCGIFDSTADDR:
	77	if (ia == (struct ns_ifaddr *)0)
	78	return (EADDRNOTAVAIL);
4353fa68 KS	79	if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
4353fa68 KS	80	return (EINVAL);
4dcdd98e	81	(struct sockaddr_ns )&ifr->ifr_dstaddr = ia->ia_dstaddr;
4353fa68 KS	82	return (0);
	83	}
	84
dfe62cc7 KM	85	if (error = suser(u.u_cred, &u.u_acflag))
dfe62cc7 KM	86	return (error);
4353fa68 KS	87
4353fa68 KS	88	switch (cmd) {
4dcdd98e KS	89	case SIOCAIFADDR:
	90	case SIOCDIFADDR:
	91	if (ifra->ifra_addr.sns_family == AF_NS)
	92	for (oia = ia; ia; ia = ia->ia_next) {
	93	if (ia->ia_ifp == ifp &&
	94	ns_neteq(ia->ia_addr.sns_addr,
	95	ifra->ifra_addr.sns_addr))
	96	break;
	97	}
	98	if (cmd == SIOCDIFADDR && ia == 0)
	99	return (EADDRNOTAVAIL);
	100	/* FALLTHROUGH */
de9bc7de	101
de9bc7de	102	case SIOCSIFADDR:
8b659320	103	case SIOCSIFDSTADDR:
de9bc7de KS	104	if (ia == (struct ns_ifaddr *)0) {
	105	m = m_getclr(M_WAIT, MT_IFADDR);
	106	if (m == (struct mbuf *)NULL)
	107	return (ENOBUFS);
	108	if (ia = ns_ifaddr) {
	109	for ( ; ia->ia_next; ia = ia->ia_next)
	110	;
	111	ia->ia_next = mtod(m, struct ns_ifaddr *);
	112	} else
	113	ns_ifaddr = mtod(m, struct ns_ifaddr *);
	114	ia = mtod(m, struct ns_ifaddr *);
	115	if (ifa = ifp->if_addrlist) {
	116	for ( ; ifa->ifa_next; ifa = ifa->ifa_next)
	117	;
	118	ifa->ifa_next = (struct ifaddr *) ia;
	119	} else
	120	ifp->if_addrlist = (struct ifaddr *) ia;
	121	ia->ia_ifp = ifp;
4dcdd98e KS	122	ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
	123
	124	ia->ia_ifa.ifa_netmask =
	125	(struct sockaddr *)&ns_netmask;
	126
	127	ia->ia_ifa.ifa_dstaddr =
	128	(struct sockaddr *)&ia->ia_dstaddr;
	129	if (ifp->if_flags & IFF_BROADCAST) {
	130	ia->ia_broadaddr.sns_family = AF_NS;
	131	ia->ia_broadaddr.sns_len = sizeof(ia->ia_addr);
	132	ia->ia_broadaddr.sns_addr.x_host = ns_broadhost;
	133	}
	134	ns_interfaces++;
de9bc7de	135	}
8b659320 KS	136	}
	137
	138	switch (cmd) {
4dcdd98e	139	int error;
8b659320 KS	140
	141	case SIOCSIFDSTADDR:
	142	if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
	143	return (EINVAL);
	144	if (ia->ia_flags & IFA_ROUTE) {
4dcdd98e	145	rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
8b659320 KS	146	ia->ia_flags &= ~IFA_ROUTE;
	147	}
	148	if (ifp->if_ioctl) {
4dcdd98e	149	error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR, ia);
8b659320 KS	150	if (error)
	151	return (error);
	152	}
4dcdd98e	153	(struct sockaddr )&ia->ia_dstaddr = ifr->ifr_dstaddr;
8b659320 KS	154	return (0);
	155
	156	case SIOCSIFADDR:
4dcdd98e KS	157	return (ns_ifinit(ifp, ia,
	158	(struct sockaddr_ns *)&ifr->ifr_addr, 1));
	159
	160	case SIOCDIFADDR:
	161	ns_ifscrub(ifp, ia);
	162	if ((ifa = ifp->if_addrlist) == (struct ifaddr *)ia)
	163	ifp->if_addrlist = ifa->ifa_next;
	164	else {
	165	while (ifa->ifa_next &&
	166	(ifa->ifa_next != (struct ifaddr *)ia))
	167	ifa = ifa->ifa_next;
	168	if (ifa->ifa_next)
	169	ifa->ifa_next = ((struct ifaddr *)ia)->ifa_next;
	170	else
	171	printf("Couldn't unlink nsifaddr from ifp\n");
	172	}
	173	oia = ia;
	174	if (oia == (ia = ns_ifaddr)) {
	175	ns_ifaddr = ia->ia_next;
	176	} else {
	177	while (ia->ia_next && (ia->ia_next != oia)) {
	178	ia = ia->ia_next;
	179	}
	180	if (ia->ia_next)
	181	ia->ia_next = oia->ia_next;
	182	else
	183	printf("Didn't unlink nsifadr from list\n");
	184	}
	185	(void) m_free(dtom(oia));
	186	if (0 == --ns_interfaces) {
	187	/*
	188	* We reset to virginity and start all over again
	189	*/
	190	ns_thishost = ns_zerohost;
	191	}
	192	return (0);
	193
	194	case SIOCAIFADDR:
	195	dstIsNew = 0; hostIsNew = 1;
	196	if (ia->ia_addr.sns_family == AF_NS) {
	197	if (ifra->ifra_addr.sns_len == 0) {
	198	ifra->ifra_addr = ia->ia_addr;
	199	hostIsNew = 0;
	200	} else if (ns_neteq(ifra->ifra_addr.sns_addr,
	201	ia->ia_addr.sns_addr))
	202	hostIsNew = 0;
	203	}
	204	if ((ifp->if_flags & IFF_POINTOPOINT) &&
	205	(ifra->ifra_dstaddr.sns_family == AF_NS)) {
	206	if (hostIsNew == 0)
	207	ns_ifscrub(ifp, ia);
	208	ia->ia_dstaddr = ifra->ifra_dstaddr;
	209	dstIsNew = 1;
	210	}
	211	if (ifra->ifra_addr.sns_family == AF_NS &&
	212	(hostIsNew \|\| dstIsNew))
	213	error = ns_ifinit(ifp, ia, &ifra->ifra_addr, 0);
	214	return (error);
de9bc7de KS	215
	216	default:
	217	if (ifp->if_ioctl == 0)
	218	return (EOPNOTSUPP);
	219	return ((*ifp->if_ioctl)(ifp, cmd, data));
	220	}
de9bc7de KS	221	}
de9bc7de KS	222
4dcdd98e KS	223	/*
	224	* Delete any previous route for an old address.
	225	*/
	226	ns_ifscrub(ifp, ia)
	227	register struct ifnet *ifp;
	228	register struct ns_ifaddr *ia;
	229	{
	230	if (ia->ia_flags & IFA_ROUTE) {
	231	if (ifp->if_flags & IFF_POINTOPOINT) {
	232	rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
	233	} else
	234	rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
	235	ia->ia_flags &= ~IFA_ROUTE;
	236	}
	237	}
de9bc7de KS	238	/*
	239	* Initialize an interface's internet address
	240	* and routing table entry.
	241	*/
4dcdd98e	242	ns_ifinit(ifp, ia, sns, scrub)
de9bc7de KS	243	register struct ifnet *ifp;
de9bc7de KS	244	register struct ns_ifaddr *ia;
4dcdd98e	245	register struct sockaddr_ns *sns;
de9bc7de	246	{
4dcdd98e KS	247	struct sockaddr_ns oldaddr;
4dcdd98e KS	248	register union ns_host *h = &ia->ia_addr.sns_addr.x_host;
de9bc7de KS	249	int s = splimp(), error;
de9bc7de KS	250
4dcdd98e KS	251	/*
	252	* Set up new addresses.
	253	*/
	254	oldaddr = ia->ia_addr;
	255	ia->ia_addr = *sns;
de9bc7de KS	256	/*
	257	* The convention we shall adopt for naming is that
	258	* a supplied address of zero means that "we don't care".
	259	* if there is a single interface, use the address of that
	260	* interface as our 6 byte host address.
	261	* if there are multiple interfaces, use any address already
	262	* used.
	263	*
de9bc7de KS	264	* Give the interface a chance to initialize
	265	* if this is its first address,
	266	* and to validate the address if necessary.
	267	*/
de9bc7de KS	268	if (ns_hosteqnh(ns_thishost, ns_zerohost)) {
	269	if (ifp->if_ioctl &&
	270	(error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) {
4dcdd98e	271	ia->ia_addr = oldaddr;
de9bc7de KS	272	splx(s);
	273	return (error);
	274	}
	275	ns_thishost = *h;
	276	} else if (ns_hosteqnh(sns->sns_addr.x_host, ns_zerohost)
	277	\|\| ns_hosteqnh(sns->sns_addr.x_host, ns_thishost)) {
	278	*h = ns_thishost;
	279	if (ifp->if_ioctl &&
	280	(error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, ia))) {
4dcdd98e	281	ia->ia_addr = oldaddr;
de9bc7de KS	282	splx(s);
	283	return (error);
	284	}
8b659320	285	if (!ns_hosteqnh(ns_thishost,*h)) {
4dcdd98e	286	ia->ia_addr = oldaddr;
de9bc7de KS	287	splx(s);
	288	return (EINVAL);
	289	}
	290	} else {
4dcdd98e	291	ia->ia_addr = oldaddr;
de9bc7de	292	splx(s);
8b659320	293	return (EINVAL);
de9bc7de KS	294	}
	295	/*
	296	* Add route for the network.
	297	*/
4dcdd98e KS	298	if (scrub) {
	299	ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
	300	ns_ifscrub(ifp, ia);
	301	ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
	302	}
8b659320	303	if (ifp->if_flags & IFF_POINTOPOINT)
4dcdd98e KS	304	rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST\|RTF_UP);
	305	else {
	306	ia->ia_broadaddr.sns_addr.x_net = ia->ia_net;
	307	rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP);
	308	}
de9bc7de	309	ia->ia_flags \|= IFA_ROUTE;
8b659320	310	return (0);
de9bc7de KS	311	}
	312
	313	/*
	314	* Return address info for specified internet network.
	315	*/
	316	struct ns_ifaddr *
46aa06a9 KS	317	ns_iaonnetof(dst)
46aa06a9 KS	318	register struct ns_addr *dst;
de9bc7de KS	319	{
de9bc7de KS	320	register struct ns_ifaddr *ia;
46aa06a9	321	register struct ns_addr *compare;
8b659320 KS	322	register struct ifnet *ifp;
8b659320 KS	323	struct ns_ifaddr *ia_maybe = 0;
f1e269d4	324	union ns_net net = dst->x_net;
de9bc7de	325
46aa06a9	326	for (ia = ns_ifaddr; ia; ia = ia->ia_next) {
8b659320 KS	327	if (ifp = ia->ia_ifp) {
	328	if (ifp->if_flags & IFF_POINTOPOINT) {
	329	compare = &satons_addr(ia->ia_dstaddr);
	330	if (ns_hosteq(dst, compare))
	331	return (ia);
f1e269d4	332	if (ns_neteqnn(net, ia->ia_net))
8b659320 KS	333	ia_maybe = ia;
8b659320 KS	334	} else {
f1e269d4	335	if (ns_neteqnn(net, ia->ia_net))
46aa06a9 KS	336	return (ia);
	337	}
	338	}
	339	}
	340	return (ia_maybe);
de9bc7de KS	341	}
de9bc7de KS	342	#endif