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

/*
 * Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)ns_pcb.c	7.6 (Berkeley) %G%
 */

#include "param.h"
#include "systm.h"
#include "dir.h"
#include "user.h"
#include "mbuf.h"
#include "socket.h"
#include "socketvar.h"
#include "../net/if.h"
#include "../net/route.h"
#include "protosw.h"

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

struct	ns_addr zerons_addr;

ns_pcballoc(so, head)
	struct socket *so;
	struct nspcb *head;
{
	struct mbuf *m;
	register struct nspcb *nsp;

	m = m_getclr(M_DONTWAIT, MT_PCB);
	if (m == NULL)
		return (ENOBUFS);
	nsp = mtod(m, struct nspcb *);
	nsp->nsp_socket = so;
	insque(nsp, head);
	so->so_pcb = (caddr_t)nsp;
	return (0);
}
	
ns_pcbbind(nsp, nam)
	register struct nspcb *nsp;
	struct mbuf *nam;
{
	register struct sockaddr_ns *sns;
	u_short lport = 0;

	if(nsp->nsp_lport || !ns_nullhost(nsp->nsp_laddr))
		return (EINVAL);
	if (nam == 0)
		goto noname;
	sns = mtod(nam, struct sockaddr_ns *);
	if (nam->m_len != sizeof (*sns))
		return (EINVAL);
	if (!ns_nullhost(sns->sns_addr)) {
		int tport = sns->sns_port;

		sns->sns_port = 0;		/* yech... */
		if (ifa_ifwithaddr((struct sockaddr *)sns) == 0)
			return (EADDRNOTAVAIL);
		sns->sns_port = tport;
	}
	lport = sns->sns_port;
	if (lport) {
		u_short aport = ntohs(lport);

		if (aport < NSPORT_RESERVED && u.u_uid != 0)
			return (EACCES);
		if (ns_pcblookup(&zerons_addr, lport, 0))
			return (EADDRINUSE);
	}
	nsp->nsp_laddr = sns->sns_addr;
noname:
	if (lport == 0)
		do {
			if (nspcb.nsp_lport++ < NSPORT_RESERVED)
				nspcb.nsp_lport = NSPORT_RESERVED;
			lport = htons(nspcb.nsp_lport);
		} while (ns_pcblookup(&zerons_addr, lport, 0));
	nsp->nsp_lport = lport;
	return (0);
}

/*
 * Connect from a socket to a specified address.
 * Both address and port must be specified in argument sns.
 * If don't have a local address for this socket yet,
 * then pick one.
 */
ns_pcbconnect(nsp, nam)
	struct nspcb *nsp;
	struct mbuf *nam;
{
	struct ns_ifaddr *ia;
	register struct sockaddr_ns *sns = mtod(nam, struct sockaddr_ns *);
	register struct ns_addr *dst;
	register struct route *ro;
	struct ifnet *ifp;

	if (nam->m_len != sizeof (*sns))
		return (EINVAL);
	if (sns->sns_family != AF_NS)
		return (EAFNOSUPPORT);
	if (sns->sns_port==0 || ns_nullhost(sns->sns_addr))
		return (EADDRNOTAVAIL);
	/*
	 * If we haven't bound which network number to use as ours,
	 * we will use the number of the outgoing interface.
	 * This depends on having done a routing lookup, which
	 * we will probably have to do anyway, so we might
	 * as well do it now.  On the other hand if we are
	 * sending to multiple destinations we may have already
	 * done the lookup, so see if we can use the route
	 * from before.  In any case, we only
	 * chose a port number once, even if sending to multiple
	 * destinations.
	 */
	ro = &nsp->nsp_route;
	dst = &satons_addr(ro->ro_dst);
	if (ro->ro_rt) {
		if (nsp->nsp_socket->so_options & SO_DONTROUTE)
			goto flush;
		if (!ns_neteq(nsp->nsp_lastdst, sns->sns_addr))
			goto flush;
		if (!ns_hosteq(nsp->nsp_lastdst, sns->sns_addr)) {
			if (((ro->ro_rt->rt_flags & (RTF_GATEWAY|RTF_HOST))
			     == RTF_GATEWAY)
			    || ((ifp = ro->ro_rt->rt_ifp) &&
				 !(ifp->if_flags & IFF_POINTOPOINT))) {
				/* can patch route to avoid rtalloc */
				*dst = sns->sns_addr;
			} else {
		flush:
				RTFREE(ro->ro_rt);
				ro->ro_rt = (struct rtentry *)0;
			}
		}/* else cached route is ok; do nothing */
	}
	nsp->nsp_lastdst = sns->sns_addr;
	if ((nsp->nsp_socket->so_options & SO_DONTROUTE) == 0 && /*XXX*/
	    (ro->ro_rt == (struct rtentry *)0 ||
	     ro->ro_rt->rt_ifp == (struct ifnet *)0)) {
		    /* No route yet, so try to acquire one */
		    ro->ro_dst.sa_family = AF_NS;
		    *dst = sns->sns_addr;
		    dst->x_port = 0;
		    rtalloc(ro);
	}
	if (ns_neteqnn(nsp->nsp_laddr.x_net, ns_zeronet)) {
		/* 
		 * If route is known or can be allocated now,
		 * our src addr is taken from the i/f, else punt.
		 */

		ia = (struct ns_ifaddr *)0;
		/*
		 * If we found a route, use the address
		 * corresponding to the outgoing interface
		 */
		if (ro->ro_rt && (ifp = ro->ro_rt->rt_ifp))
			for (ia = ns_ifaddr; ia; ia = ia->ia_next)
				if (ia->ia_ifp == ifp)
					break;
		if (ia == 0) {
			u_short fport = sns->sns_addr.x_port;
			sns->sns_addr.x_port = 0;
			ia = (struct ns_ifaddr *)
				ifa_ifwithdstaddr((struct sockaddr *)sns);
			sns->sns_addr.x_port = fport;
			if (ia == 0)
				ia = ns_iaonnetof(&sns->sns_addr);
			if (ia == 0)
				ia = ns_ifaddr;
			if (ia == 0)
				return (EADDRNOTAVAIL);
		}
		nsp->nsp_laddr.x_net = satons_addr(ia->ia_addr).x_net;
	}
	if (ns_pcblookup(&sns->sns_addr, nsp->nsp_lport, 0))
		return (EADDRINUSE);
	if (ns_nullhost(nsp->nsp_laddr)) {
		if (nsp->nsp_lport == 0)
			(void) ns_pcbbind(nsp, (struct mbuf *)0);
		nsp->nsp_laddr.x_host = ns_thishost;
	}
	nsp->nsp_faddr = sns->sns_addr;
	/* Includes nsp->nsp_fport = sns->sns_port; */
	return (0);
}

ns_pcbdisconnect(nsp)
	struct nspcb *nsp;
{

	nsp->nsp_faddr = zerons_addr;
	if (nsp->nsp_socket->so_state & SS_NOFDREF)
		ns_pcbdetach(nsp);
}

ns_pcbdetach(nsp)
	struct nspcb *nsp;
{
	struct socket *so = nsp->nsp_socket;

	so->so_pcb = 0;
	sofree(so);
	if (nsp->nsp_route.ro_rt)
		rtfree(nsp->nsp_route.ro_rt);
	remque(nsp);
	(void) m_free(dtom(nsp));
}

ns_setsockaddr(nsp, nam)
	register struct nspcb *nsp;
	struct mbuf *nam;
{
	register struct sockaddr_ns *sns = mtod(nam, struct sockaddr_ns *);
	
	nam->m_len = sizeof (*sns);
	sns = mtod(nam, struct sockaddr_ns *);
	bzero((caddr_t)sns, sizeof (*sns));
	sns->sns_family = AF_NS;
	sns->sns_addr = nsp->nsp_laddr;
}

ns_setpeeraddr(nsp, nam)
	register struct nspcb *nsp;
	struct mbuf *nam;
{
	register struct sockaddr_ns *sns = mtod(nam, struct sockaddr_ns *);
	
	nam->m_len = sizeof (*sns);
	sns = mtod(nam, struct sockaddr_ns *);
	bzero((caddr_t)sns, sizeof (*sns));
	sns->sns_family = AF_NS;
	sns->sns_addr  = nsp->nsp_faddr;
}

/*
 * Pass some notification to all connections of a protocol
 * associated with address dst.  Call the
 * protocol specific routine to handle each connection.
 * Also pass an extra paramter via the nspcb. (which may in fact
 * be a parameter list!)
 */
ns_pcbnotify(dst, errno, notify, param)
	register struct ns_addr *dst;
	long param;
	int errno, (*notify)();
{
	register struct nspcb *nsp, *oinp;
	int s = splimp();

	for (nsp = (&nspcb)->nsp_next; nsp != (&nspcb);) {
		if (!ns_hosteq(*dst,nsp->nsp_faddr)) {
	next:
			nsp = nsp->nsp_next;
			continue;
		}
		if (nsp->nsp_socket == 0)
			goto next;
		if (errno) 
			nsp->nsp_socket->so_error = errno;
		oinp = nsp;
		nsp = nsp->nsp_next;
		oinp->nsp_notify_param = param;
		(*notify)(oinp);
	}
	splx(s);
}

#ifdef notdef
/*
 * After a routing change, flush old routing
 * and allocate a (hopefully) better one.
 */
ns_rtchange(nsp)
	struct nspcb *nsp;
{
	if (nsp->nsp_route.ro_rt) {
		rtfree(nsp->nsp_route.ro_rt);
		nsp->nsp_route.ro_rt = 0;
		/*
		 * A new route can be allocated the next time
		 * output is attempted.
		 */
	}
	/* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
}
#endif

struct nspcb *
ns_pcblookup(faddr, lport, wildp)
	struct ns_addr *faddr;
	u_short lport;
{
	register struct nspcb *nsp, *match = 0;
	int matchwild = 3, wildcard;
	u_short fport;

	fport = faddr->x_port;
	for (nsp = (&nspcb)->nsp_next; nsp != (&nspcb); nsp = nsp->nsp_next) {
		if (nsp->nsp_lport != lport)
			continue;
		wildcard = 0;
		if (ns_nullhost(nsp->nsp_faddr)) {
			if (!ns_nullhost(*faddr))
				wildcard++;
		} else {
			if (ns_nullhost(*faddr))
				wildcard++;
			else {
				if (!ns_hosteq(nsp->nsp_faddr, *faddr))
					continue;
				if( nsp->nsp_fport != fport) {
					if(nsp->nsp_fport != 0)
						continue;
					else
						wildcard++;
				}
			}
		}
		if (wildcard && wildp==0)
			continue;
		if (wildcard < matchwild) {
			match = nsp;
			matchwild = wildcard;
			if (wildcard == 0)
				break;
		}
	}
	return (match);
}
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	*
240edf1f	5	* Redistribution and use in source and binary forms are permitted
616d42db KB	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
240edf1f	16	*
7ba931a0	17	* @(#)ns_pcb.c 7.6 (Berkeley) %G%
8ae0e4b4	18	*/
2d433de1 KS	19
	20	#include "param.h"
	21	#include "systm.h"
	22	#include "dir.h"
	23	#include "user.h"
	24	#include "mbuf.h"
	25	#include "socket.h"
	26	#include "socketvar.h"
	27	#include "../net/if.h"
	28	#include "../net/route.h"
	29	#include "protosw.h"
	30
	31	#include "ns.h"
	32	#include "ns_if.h"
	33	#include "ns_pcb.h"
	34
	35	struct ns_addr zerons_addr;
	36
	37	ns_pcballoc(so, head)
	38	struct socket *so;
f97be0c9	39	struct nspcb *head;
2d433de1 KS	40	{
	41	struct mbuf *m;
	42	register struct nspcb *nsp;
	43
	44	m = m_getclr(M_DONTWAIT, MT_PCB);
	45	if (m == NULL)
	46	return (ENOBUFS);
	47	nsp = mtod(m, struct nspcb *);
	48	nsp->nsp_socket = so;
	49	insque(nsp, head);
	50	so->so_pcb = (caddr_t)nsp;
	51	return (0);
	52	}
	53
	54	ns_pcbbind(nsp, nam)
	55	register struct nspcb *nsp;
	56	struct mbuf *nam;
	57	{
	58	register struct sockaddr_ns *sns;
	59	u_short lport = 0;
	60
	61	if(nsp->nsp_lport \|\| !ns_nullhost(nsp->nsp_laddr))
	62	return (EINVAL);
	63	if (nam == 0)
	64	goto noname;
	65	sns = mtod(nam, struct sockaddr_ns *);
	66	if (nam->m_len != sizeof (*sns))
	67	return (EINVAL);
	68	if (!ns_nullhost(sns->sns_addr)) {
	69	int tport = sns->sns_port;
	70
	71	sns->sns_port = 0; /* yech... */
	72	if (ifa_ifwithaddr((struct sockaddr *)sns) == 0)
	73	return (EADDRNOTAVAIL);
	74	sns->sns_port = tport;
	75	}
	76	lport = sns->sns_port;
	77	if (lport) {
	78	u_short aport = ntohs(lport);
	79
	80	if (aport < NSPORT_RESERVED && u.u_uid != 0)
	81	return (EACCES);
	82	if (ns_pcblookup(&zerons_addr, lport, 0))
	83	return (EADDRINUSE);
	84	}
	85	nsp->nsp_laddr = sns->sns_addr;
	86	noname:
	87	if (lport == 0)
	88	do {
	89	if (nspcb.nsp_lport++ < NSPORT_RESERVED)
	90	nspcb.nsp_lport = NSPORT_RESERVED;
	91	lport = htons(nspcb.nsp_lport);
	92	} while (ns_pcblookup(&zerons_addr, lport, 0));
	93	nsp->nsp_lport = lport;
	94	return (0);
	95	}
	96
	97	/*
	98	* Connect from a socket to a specified address.
	99	* Both address and port must be specified in argument sns.
	100	* If don't have a local address for this socket yet,
	101	* then pick one.
	102	*/
	103	ns_pcbconnect(nsp, nam)
104	struct nspcb *nsp;
105	struct mbuf *nam;
106	{
107	struct ns_ifaddr *ia;
2d433de1	108	register struct sockaddr_ns sns = mtod(nam, struct sockaddr_ns );
aa6e5222	109	register struct ns_addr *dst;
88b15994 KS	110	register struct route *ro;
88b15994 KS	111	struct ifnet *ifp;
2d433de1 KS	112
	113	if (nam->m_len != sizeof (*sns))
	114	return (EINVAL);
	115	if (sns->sns_family != AF_NS)
	116	return (EAFNOSUPPORT);
	117	if (sns->sns_port==0 \|\| ns_nullhost(sns->sns_addr))
	118	return (EADDRNOTAVAIL);
88b15994 KS	119	/*
	120	* If we haven't bound which network number to use as ours,
	121	* we will use the number of the outgoing interface.
	122	* This depends on having done a routing lookup, which
	123	* we will probably have to do anyway, so we might
	124	* as well do it now. On the other hand if we are
	125	* sending to multiple destinations we may have already
	126	* done the lookup, so see if we can use the route
	127	* from before. In any case, we only
	128	* chose a port number once, even if sending to multiple
	129	* destinations.
	130	*/
	131	ro = &nsp->nsp_route;
	132	dst = &satons_addr(ro->ro_dst);
	133	if (ro->ro_rt) {
	134	if (nsp->nsp_socket->so_options & SO_DONTROUTE)
	135	goto flush;
	136	if (!ns_neteq(nsp->nsp_lastdst, sns->sns_addr))
	137	goto flush;
	138	if (!ns_hosteq(nsp->nsp_lastdst, sns->sns_addr)) {
	139	if (((ro->ro_rt->rt_flags & (RTF_GATEWAY\|RTF_HOST))
	140	== RTF_GATEWAY)
	141	\|\| ((ifp = ro->ro_rt->rt_ifp) &&
	142	!(ifp->if_flags & IFF_POINTOPOINT))) {
	143	/* can patch route to avoid rtalloc */
	144	*dst = sns->sns_addr;
	145	} else {
	146	flush:
	147	RTFREE(ro->ro_rt);
	148	ro->ro_rt = (struct rtentry *)0;
	149	}
	150	}/* else cached route is ok; do nothing */
	151	}
	152	nsp->nsp_lastdst = sns->sns_addr;
	153	if ((nsp->nsp_socket->so_options & SO_DONTROUTE) == 0 && /XXX/
	154	(ro->ro_rt == (struct rtentry *)0 \|\|
	155	ro->ro_rt->rt_ifp == (struct ifnet *)0)) {
	156	/* No route yet, so try to acquire one */
	157	ro->ro_dst.sa_family = AF_NS;
	158	*dst = sns->sns_addr;
	159	dst->x_port = 0;
	160	rtalloc(ro);
	161	}
	162	if (ns_neteqnn(nsp->nsp_laddr.x_net, ns_zeronet)) {
6d22baac MK	163	/*
	164	* If route is known or can be allocated now,
	165	* our src addr is taken from the i/f, else punt.
	166	*/
2d433de1	167
6d22baac	168	ia = (struct ns_ifaddr *)0;
6d22baac MK	169	/*
	170	* If we found a route, use the address
	171	* corresponding to the outgoing interface
	172	*/
	173	if (ro->ro_rt && (ifp = ro->ro_rt->rt_ifp))
	174	for (ia = ns_ifaddr; ia; ia = ia->ia_next)
	175	if (ia->ia_ifp == ifp)
	176	break;
	177	if (ia == 0) {
	178	u_short fport = sns->sns_addr.x_port;
	179	sns->sns_addr.x_port = 0;
	180	ia = (struct ns_ifaddr *)
	181	ifa_ifwithdstaddr((struct sockaddr *)sns);
	182	sns->sns_addr.x_port = fport;
	183	if (ia == 0)
	184	ia = ns_iaonnetof(&sns->sns_addr);
2d433de1 KS	185	if (ia == 0)
	186	ia = ns_ifaddr;
	187	if (ia == 0)
	188	return (EADDRNOTAVAIL);
	189	}
aa6e5222	190	nsp->nsp_laddr.x_net = satons_addr(ia->ia_addr).x_net;
2d433de1 KS	191	}
	192	if (ns_pcblookup(&sns->sns_addr, nsp->nsp_lport, 0))
	193	return (EADDRINUSE);
	194	if (ns_nullhost(nsp->nsp_laddr)) {
	195	if (nsp->nsp_lport == 0)
f97be0c9	196	(void) ns_pcbbind(nsp, (struct mbuf *)0);
2d433de1 KS	197	nsp->nsp_laddr.x_host = ns_thishost;
	198	}
	199	nsp->nsp_faddr = sns->sns_addr;
	200	/* Includes nsp->nsp_fport = sns->sns_port; */
	201	return (0);
	202	}
	203
	204	ns_pcbdisconnect(nsp)
	205	struct nspcb *nsp;
	206	{
	207
	208	nsp->nsp_faddr = zerons_addr;
	209	if (nsp->nsp_socket->so_state & SS_NOFDREF)
	210	ns_pcbdetach(nsp);
	211	}
	212
	213	ns_pcbdetach(nsp)
	214	struct nspcb *nsp;
	215	{
	216	struct socket *so = nsp->nsp_socket;
	217
	218	so->so_pcb = 0;
	219	sofree(so);
	220	if (nsp->nsp_route.ro_rt)
	221	rtfree(nsp->nsp_route.ro_rt);
	222	remque(nsp);
	223	(void) m_free(dtom(nsp));
	224	}
	225
	226	ns_setsockaddr(nsp, nam)
	227	register struct nspcb *nsp;
	228	struct mbuf *nam;
	229	{
	230	register struct sockaddr_ns sns = mtod(nam, struct sockaddr_ns );
	231
	232	nam->m_len = sizeof (*sns);
	233	sns = mtod(nam, struct sockaddr_ns *);
	234	bzero((caddr_t)sns, sizeof (*sns));
	235	sns->sns_family = AF_NS;
	236	sns->sns_addr = nsp->nsp_laddr;
	237	}
	238
	239	ns_setpeeraddr(nsp, nam)
	240	register struct nspcb *nsp;
	241	struct mbuf *nam;
	242	{
	243	register struct sockaddr_ns sns = mtod(nam, struct sockaddr_ns );
	244
	245	nam->m_len = sizeof (*sns);
	246	sns = mtod(nam, struct sockaddr_ns *);
	247	bzero((caddr_t)sns, sizeof (*sns));
	248	sns->sns_family = AF_NS;
	249	sns->sns_addr = nsp->nsp_faddr;
	250	}
	251
	252	/*
	253	* Pass some notification to all connections of a protocol
	254	* associated with address dst. Call the
	255	* protocol specific routine to handle each connection.
	256	* Also pass an extra paramter via the nspcb. (which may in fact
	257	* be a parameter list!)
	258	*/
	259	ns_pcbnotify(dst, errno, notify, param)
	260	register struct ns_addr *dst;
261	long param;
262	int errno, (*notify)();
263	{
264	register struct nspcb nsp, oinp;
265	int s = splimp();
266
267	for (nsp = (&nspcb)->nsp_next; nsp != (&nspcb);) {
268	if (!ns_hosteq(*dst,nsp->nsp_faddr)) {
269	next:
270	nsp = nsp->nsp_next;
271	continue;
272	}
273	if (nsp->nsp_socket == 0)
274	goto next;
275	if (errno)
276	nsp->nsp_socket->so_error = errno;
277	oinp = nsp;
278	nsp = nsp->nsp_next;
279	oinp->nsp_notify_param = param;
280	(*notify)(oinp);
281	}
282	splx(s);
283	}
284
58bca61d	285	#ifdef notdef
2d433de1 KS	286	/*
	287	* After a routing change, flush old routing
	288	* and allocate a (hopefully) better one.
	289	*/
	290	ns_rtchange(nsp)
	291	struct nspcb *nsp;
	292	{
	293	if (nsp->nsp_route.ro_rt) {
	294	rtfree(nsp->nsp_route.ro_rt);
	295	nsp->nsp_route.ro_rt = 0;
	296	/*
	297	* A new route can be allocated the next time
	298	* output is attempted.
	299	*/
	300	}
	301	/* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
	302	}
58bca61d	303	#endif
2d433de1 KS	304
	305	struct nspcb *
	306	ns_pcblookup(faddr, lport, wildp)
	307	struct ns_addr *faddr;
	308	u_short lport;
	309	{
	310	register struct nspcb nsp, match = 0;
	311	int matchwild = 3, wildcard;
	312	u_short fport;
	313
	314	fport = faddr->x_port;
	315	for (nsp = (&nspcb)->nsp_next; nsp != (&nspcb); nsp = nsp->nsp_next) {
	316	if (nsp->nsp_lport != lport)
	317	continue;
	318	wildcard = 0;
	319	if (ns_nullhost(nsp->nsp_faddr)) {
	320	if (!ns_nullhost(*faddr))
	321	wildcard++;
	322	} else {
	323	if (ns_nullhost(*faddr))
	324	wildcard++;
	325	else {
	326	if (!ns_hosteq(nsp->nsp_faddr, *faddr))
	327	continue;
	328	if( nsp->nsp_fport != fport) {
	329	if(nsp->nsp_fport != 0)
	330	continue;
	331	else
	332	wildcard++;
	333	}
	334	}
	335	}
	336	if (wildcard && wildp==0)
	337	continue;
	338	if (wildcard < matchwild) {
	339	match = nsp;
	340	matchwild = wildcard;
	341	if (wildcard == 0)
	342	break;
	343	}
	344	}
	345	return (match);
	346	}