[unix-history] / 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, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)ns_pcb.c	7.11 (Berkeley) 6/27/91
 *	$Id: ns_pcb.c,v 1.4 1993/11/25 01:36:33 wollman Exp $
 */

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "errno.h"
#include "socket.h"
#include "socketvar.h"
#include "protosw.h"

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

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

struct	ns_addr zerons_addr;
struct	nspcb nspcb;

int
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);
}
	
int
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 &&
		    (nsp->nsp_socket->so_state & SS_PRIV) == 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.
 */
int
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 (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 && ! (ro->ro_rt->rt_flags & RTF_HOST)) {
			/* can patch route to avoid rtalloc */
			*dst = sns->sns_addr;
		} else {
	flush:
			if (ro->ro_rt)
				RTFREE(ro->ro_rt);
			ro->ro_rt = (struct rtentry *)0;
			nsp->nsp_laddr.x_net = ns_zeronet;
		}
	}/* 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;
		    ro->ro_dst.sa_len = sizeof(ro->ro_dst);
		    *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);
}

void
ns_pcbdisconnect(nsp)
	struct nspcb *nsp;
{

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

void
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));
}

void
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_len = sizeof(*sns);
	sns->sns_family = AF_NS;
	sns->sns_addr = nsp->nsp_laddr;
}

void
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_len = 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!)
 */
void
ns_pcbnotify(dst, errno, notify, param)
	register struct ns_addr *dst;
	int errno;
	ns_notify_func_t notify;
	long param;
{
	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, errno);
	}
	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;
	int wildp;
{
	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
15637ed4 RG	1	/*
	2	* Copyright (c) 1984, 1985, 1986, 1987 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
136b31f1	33	* from: @(#)ns_pcb.c 7.11 (Berkeley) 6/27/91
fde1aeb2	34	* $Id: ns_pcb.c,v 1.4 1993/11/25 01:36:33 wollman Exp $
15637ed4 RG	35	*/
	36
	37	#include "param.h"
	38	#include "systm.h"
	39	#include "mbuf.h"
	40	#include "errno.h"
	41	#include "socket.h"
	42	#include "socketvar.h"
	43	#include "protosw.h"
	44
	45	#include "../net/if.h"
	46	#include "../net/route.h"
	47
	48	#include "ns.h"
	49	#include "ns_if.h"
	50	#include "ns_pcb.h"
	51
	52	struct ns_addr zerons_addr;
8ace4366 GW	53	struct nspcb nspcb;
8ace4366 GW	54
4c45483e	55	int
15637ed4 RG	56	ns_pcballoc(so, head)
	57	struct socket *so;
	58	struct nspcb *head;
	59	{
	60	struct mbuf *m;
	61	register struct nspcb *nsp;
	62
	63	m = m_getclr(M_DONTWAIT, MT_PCB);
	64	if (m == NULL)
	65	return (ENOBUFS);
	66	nsp = mtod(m, struct nspcb *);
	67	nsp->nsp_socket = so;
	68	insque(nsp, head);
	69	so->so_pcb = (caddr_t)nsp;
	70	return (0);
	71	}
	72
4c45483e	73	int
15637ed4 RG	74	ns_pcbbind(nsp, nam)
	75	register struct nspcb *nsp;
	76	struct mbuf *nam;
	77	{
	78	register struct sockaddr_ns *sns;
	79	u_short lport = 0;
	80
	81	if (nsp->nsp_lport \|\| !ns_nullhost(nsp->nsp_laddr))
	82	return (EINVAL);
	83	if (nam == 0)
	84	goto noname;
	85	sns = mtod(nam, struct sockaddr_ns *);
	86	if (nam->m_len != sizeof (*sns))
	87	return (EINVAL);
	88	if (!ns_nullhost(sns->sns_addr)) {
	89	int tport = sns->sns_port;
	90
	91	sns->sns_port = 0; /* yech... */
	92	if (ifa_ifwithaddr((struct sockaddr *)sns) == 0)
	93	return (EADDRNOTAVAIL);
	94	sns->sns_port = tport;
	95	}
	96	lport = sns->sns_port;
	97	if (lport) {
	98	u_short aport = ntohs(lport);
	99
	100	if (aport < NSPORT_RESERVED &&
	101	(nsp->nsp_socket->so_state & SS_PRIV) == 0)
	102	return (EACCES);
	103	if (ns_pcblookup(&zerons_addr, lport, 0))
	104	return (EADDRINUSE);
	105	}
	106	nsp->nsp_laddr = sns->sns_addr;
	107	noname:
	108	if (lport == 0)
	109	do {
	110	if (nspcb.nsp_lport++ < NSPORT_RESERVED)
	111	nspcb.nsp_lport = NSPORT_RESERVED;
	112	lport = htons(nspcb.nsp_lport);
	113	} while (ns_pcblookup(&zerons_addr, lport, 0));
	114	nsp->nsp_lport = lport;
	115	return (0);
	116	}
	117
	118	/*
	119	* Connect from a socket to a specified address.
	120	* Both address and port must be specified in argument sns.
	121	* If don't have a local address for this socket yet,
	122	* then pick one.
	123	*/
4c45483e	124	int
15637ed4 RG	125	ns_pcbconnect(nsp, nam)
	126	struct nspcb *nsp;
	127	struct mbuf *nam;
	128	{
	129	struct ns_ifaddr *ia;
	130	register struct sockaddr_ns sns = mtod(nam, struct sockaddr_ns );
	131	register struct ns_addr *dst;
	132	register struct route *ro;
	133	struct ifnet *ifp;
	134
	135	if (nam->m_len != sizeof (*sns))
	136	return (EINVAL);
	137	if (sns->sns_family != AF_NS)
	138	return (EAFNOSUPPORT);
	139	if (sns->sns_port==0 \|\| ns_nullhost(sns->sns_addr))
	140	return (EADDRNOTAVAIL);
	141	/*
	142	* If we haven't bound which network number to use as ours,
	143	* we will use the number of the outgoing interface.
	144	* This depends on having done a routing lookup, which
	145	* we will probably have to do anyway, so we might
	146	* as well do it now. On the other hand if we are
	147	* sending to multiple destinations we may have already
	148	* done the lookup, so see if we can use the route
	149	* from before. In any case, we only
	150	* chose a port number once, even if sending to multiple
	151	* destinations.
	152	*/
	153	ro = &nsp->nsp_route;
	154	dst = &satons_addr(ro->ro_dst);
	155	if (nsp->nsp_socket->so_options & SO_DONTROUTE)
	156	goto flush;
	157	if (!ns_neteq(nsp->nsp_lastdst, sns->sns_addr))
	158	goto flush;
	159	if (!ns_hosteq(nsp->nsp_lastdst, sns->sns_addr)) {
	160	if (ro->ro_rt && ! (ro->ro_rt->rt_flags & RTF_HOST)) {
	161	/* can patch route to avoid rtalloc */
	162	*dst = sns->sns_addr;
	163	} else {
	164	flush:
	165	if (ro->ro_rt)
	166	RTFREE(ro->ro_rt);
	167	ro->ro_rt = (struct rtentry *)0;
	168	nsp->nsp_laddr.x_net = ns_zeronet;
	169	}
	170	}/* else cached route is ok; do nothing */
	171	nsp->nsp_lastdst = sns->sns_addr;
	172	if ((nsp->nsp_socket->so_options & SO_DONTROUTE) == 0 && /XXX/
	173	(ro->ro_rt == (struct rtentry *)0 \|\|
	174	ro->ro_rt->rt_ifp == (struct ifnet *)0)) {
	175	/* No route yet, so try to acquire one */
	176	ro->ro_dst.sa_family = AF_NS;
	177	ro->ro_dst.sa_len = sizeof(ro->ro_dst);
	178	*dst = sns->sns_addr;
	179	dst->x_port = 0;
	180	rtalloc(ro);
	181	}
	182	if (ns_neteqnn(nsp->nsp_laddr.x_net, ns_zeronet)) {
	183	/*
	184	* If route is known or can be allocated now,
	185	* our src addr is taken from the i/f, else punt.
	186	*/
	187
	188	ia = (struct ns_ifaddr *)0;
189	/*
190	* If we found a route, use the address
191	* corresponding to the outgoing interface
192	*/
193	if (ro->ro_rt && (ifp = ro->ro_rt->rt_ifp))
194	for (ia = ns_ifaddr; ia; ia = ia->ia_next)
195	if (ia->ia_ifp == ifp)
196	break;
197	if (ia == 0) {
198	u_short fport = sns->sns_addr.x_port;
199	sns->sns_addr.x_port = 0;
200	ia = (struct ns_ifaddr *)
201	ifa_ifwithdstaddr((struct sockaddr *)sns);
202	sns->sns_addr.x_port = fport;
203	if (ia == 0)
204	ia = ns_iaonnetof(&sns->sns_addr);
205	if (ia == 0)
206	ia = ns_ifaddr;
207	if (ia == 0)
208	return (EADDRNOTAVAIL);
209	}
210	nsp->nsp_laddr.x_net = satons_addr(ia->ia_addr).x_net;
211	}
212	if (ns_pcblookup(&sns->sns_addr, nsp->nsp_lport, 0))
213	return (EADDRINUSE);
214	if (ns_nullhost(nsp->nsp_laddr)) {
215	if (nsp->nsp_lport == 0)
216	(void) ns_pcbbind(nsp, (struct mbuf *)0);
217	nsp->nsp_laddr.x_host = ns_thishost;
218	}
219	nsp->nsp_faddr = sns->sns_addr;
220	/* Includes nsp->nsp_fport = sns->sns_port; */
221	return (0);
222	}
223
4c45483e	224	void
15637ed4 RG	225	ns_pcbdisconnect(nsp)
	226	struct nspcb *nsp;
	227	{
	228
	229	nsp->nsp_faddr = zerons_addr;
	230	if (nsp->nsp_socket->so_state & SS_NOFDREF)
	231	ns_pcbdetach(nsp);
	232	}
	233
4c45483e	234	void
15637ed4 RG	235	ns_pcbdetach(nsp)
	236	struct nspcb *nsp;
	237	{
	238	struct socket *so = nsp->nsp_socket;
	239
	240	so->so_pcb = 0;
	241	sofree(so);
	242	if (nsp->nsp_route.ro_rt)
	243	rtfree(nsp->nsp_route.ro_rt);
	244	remque(nsp);
	245	(void) m_free(dtom(nsp));
	246	}
	247
4c45483e	248	void
15637ed4 RG	249	ns_setsockaddr(nsp, nam)
	250	register struct nspcb *nsp;
	251	struct mbuf *nam;
	252	{
	253	register struct sockaddr_ns sns = mtod(nam, struct sockaddr_ns );
	254
	255	nam->m_len = sizeof (*sns);
	256	sns = mtod(nam, struct sockaddr_ns *);
	257	bzero((caddr_t)sns, sizeof (*sns));
	258	sns->sns_len = sizeof(*sns);
	259	sns->sns_family = AF_NS;
	260	sns->sns_addr = nsp->nsp_laddr;
	261	}
	262
4c45483e	263	void
15637ed4 RG	264	ns_setpeeraddr(nsp, nam)
	265	register struct nspcb *nsp;
	266	struct mbuf *nam;
	267	{
	268	register struct sockaddr_ns sns = mtod(nam, struct sockaddr_ns );
	269
	270	nam->m_len = sizeof (*sns);
	271	sns = mtod(nam, struct sockaddr_ns *);
	272	bzero((caddr_t)sns, sizeof (*sns));
	273	sns->sns_len = sizeof(*sns);
	274	sns->sns_family = AF_NS;
	275	sns->sns_addr = nsp->nsp_faddr;
	276	}
	277
	278	/*
	279	* Pass some notification to all connections of a protocol
	280	* associated with address dst. Call the
	281	* protocol specific routine to handle each connection.
	282	* Also pass an extra paramter via the nspcb. (which may in fact
	283	* be a parameter list!)
	284	*/
4c45483e	285	void
15637ed4 RG	286	ns_pcbnotify(dst, errno, notify, param)
15637ed4 RG	287	register struct ns_addr *dst;
fde1aeb2 GW	288	int errno;
fde1aeb2 GW	289	ns_notify_func_t notify;
15637ed4	290	long param;
15637ed4 RG	291	{
	292	register struct nspcb nsp, oinp;
	293	int s = splimp();
	294
	295	for (nsp = (&nspcb)->nsp_next; nsp != (&nspcb);) {
	296	if (!ns_hosteq(*dst,nsp->nsp_faddr)) {
	297	next:
	298	nsp = nsp->nsp_next;
	299	continue;
	300	}
	301	if (nsp->nsp_socket == 0)
	302	goto next;
	303	if (errno)
	304	nsp->nsp_socket->so_error = errno;
	305	oinp = nsp;
	306	nsp = nsp->nsp_next;
	307	oinp->nsp_notify_param = param;
fde1aeb2	308	(*notify)(oinp, errno);
15637ed4 RG	309	}
	310	splx(s);
	311	}
	312
	313	#ifdef notdef
	314	/*
	315	* After a routing change, flush old routing
	316	* and allocate a (hopefully) better one.
	317	*/
	318	ns_rtchange(nsp)
	319	struct nspcb *nsp;
	320	{
	321	if (nsp->nsp_route.ro_rt) {
	322	rtfree(nsp->nsp_route.ro_rt);
	323	nsp->nsp_route.ro_rt = 0;
	324	/*
	325	* A new route can be allocated the next time
	326	* output is attempted.
	327	*/
	328	}
	329	/* SHOULD NOTIFY HIGHER-LEVEL PROTOCOLS */
	330	}
	331	#endif
	332
	333	struct nspcb *
	334	ns_pcblookup(faddr, lport, wildp)
	335	struct ns_addr *faddr;
	336	u_short lport;
4c45483e	337	int wildp;
15637ed4 RG	338	{
	339	register struct nspcb nsp, match = 0;
	340	int matchwild = 3, wildcard;
	341	u_short fport;
	342
	343	fport = faddr->x_port;
	344	for (nsp = (&nspcb)->nsp_next; nsp != (&nspcb); nsp = nsp->nsp_next) {
	345	if (nsp->nsp_lport != lport)
	346	continue;
	347	wildcard = 0;
	348	if (ns_nullhost(nsp->nsp_faddr)) {
	349	if (!ns_nullhost(*faddr))
	350	wildcard++;
	351	} else {
	352	if (ns_nullhost(*faddr))
	353	wildcard++;
	354	else {
	355	if (!ns_hosteq(nsp->nsp_faddr, *faddr))
	356	continue;
	357	if (nsp->nsp_fport != fport) {
	358	if (nsp->nsp_fport != 0)
	359	continue;
	360	else
	361	wildcard++;
	362	}
	363	}
	364	}
	365	if (wildcard && wildp==0)
	366	continue;
	367	if (wildcard < matchwild) {
	368	match = nsp;
	369	matchwild = wildcard;
	370	if (wildcard == 0)
	371	break;
	372	}
	373	}
	374	return (match);
	375	}