[apple/xnu.git] / bsd / kern / uipc_domain.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*
 * Copyright (c) 1982, 1986, 1993
 *	The 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.
 *
 *	@(#)uipc_domain.c	8.3 (Berkeley) 2/14/95
 */

#include <sys/param.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/domain.h>
#include <sys/mbuf.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/queue.h>

void	pffasttimo __P((void *));
void	pfslowtimo __P((void *));

/*
 * Add/delete 'domain': Link structure into system list,
 *  invoke the domain init, and then the proto inits.
 * To delete, just remove from the list (dom_refs must be zero)
 */


void init_domain(register struct domain *dp)
{
	struct protosw  *pr;
	
	if (dp->dom_init)
		(*dp->dom_init)();

	/* and then init the currently installed protos in this domain */

	for (pr = dp->dom_protosw; pr; pr = pr->pr_next) {
		if (pr->pr_usrreqs == 0)
			panic("domaininit: %ssw[%d] has no usrreqs!",
			      dp->dom_name, 
			      (int)(pr - dp->dom_protosw));

		if (pr->pr_init)
			(*pr->pr_init)();
	}

	/* Recompute for new protocol */
	if (max_linkhdr < 16)		/* XXX - Sheesh; everything's ether? */
		max_linkhdr = 16;
	if (dp->dom_protohdrlen > max_protohdr)
		max_protohdr = dp->dom_protohdrlen;
	max_hdr = max_linkhdr + max_protohdr;
	max_datalen = MHLEN - max_hdr;
}

void	concat_domain(struct domain *dp) 
{
	dp->dom_next = domains; 
	domains = dp; 
}

void
net_add_domain(register struct domain *dp)
{	register struct protosw *pr;
	register int s;
	extern int splhigh(void);
	extern int splx(int);

	kprintf("Adding domain %s (family %d)\n", dp->dom_name,
		dp->dom_family);
	/* First, link in the domain */
	s = splhigh();

	concat_domain(dp);

	init_domain(dp);

	splx(s);
}

int
net_del_domain(register struct domain *dp)
{	register struct domain *dp1, *dp2;
	register int s, retval = 0;
	extern int splhigh(void);
	extern int splx(int);
 
	if (dp->dom_refs)
		return(EBUSY);

	s = splhigh();

	for (dp2 = NULL, dp1 = domains; dp1; dp2 = dp1, dp1 = dp1->dom_next)
	{	if (dp == dp1)
			break;
	}
	if (dp1)
	{	if (dp2)
			dp2->dom_next = dp1->dom_next;
		else
			domains = dp1->dom_next;
	} else
		retval = EPFNOSUPPORT;
	splx(s);

	return(retval);
}

/*
 * net_add_proto - link a protosw into a domain's protosw chain
 */
int
net_add_proto(register struct protosw *pp,
	      register struct domain *dp)
{	register struct protosw *pp1, *pp2;
	register int s;
	extern int splhigh(void);
	extern int splx(int);

	s = splhigh();
	for (pp2 = NULL, pp1 = dp->dom_protosw; pp1; pp1 = pp1->pr_next)
	{	if (pp1->pr_type == pp->pr_type &&
		    pp1->pr_protocol == pp->pr_protocol) {
			splx(s);
			return(EEXIST);
		}
		pp2 = pp1;
	}
	if (pp2 == NULL)
		dp->dom_protosw = pp;
	else
		pp2->pr_next = pp;
	pp->pr_next = NULL;
	TAILQ_INIT(&pp->pr_sfilter);
	if (pp->pr_init)
		(*pp->pr_init)();

	/* Make sure pr_init isn't called again!! */
	pp->pr_init = 0;
	splx(s);
	return(0);
}

/*
 * net_del_proto - remove a protosw from a domain's protosw chain.
 * Search the protosw chain for the element with matching data.
 * Then unlink and return.
 */
int
net_del_proto(register int type,
	      register int protocol,
	      register struct domain *dp)
{	register struct protosw *pp1, *pp2;
	int s;
	extern int splhigh(void);
	extern int splx(int);

	s = splhigh();
	for (pp2 = NULL, pp1 = dp->dom_protosw; pp1; pp1 = pp1->pr_next)
	{	if (pp1->pr_type == type &&
		    pp1->pr_protocol == protocol)
			break;
		pp2 = pp1;
	}
        if (pp1 == NULL) {
			splx(s);
			return(ENXIO);
		}
	if (pp2)
		pp2->pr_next = pp1->pr_next;
	else
		dp->dom_protosw = pp1->pr_next;
	splx(s);
	return(0);
}


void
domaininit()
{	register struct domain *dp;
	register struct protosw *pr;
	extern struct domain localdomain, routedomain, ndrvdomain, inetdomain;
	extern struct domain systemdomain;
#if NS
	extern struct domain nsdomain;
#endif
#if ISO
	extern struct domain isodomain;
#endif
#if CCITT
	extern struct domain ccittdomain;
#endif

#if NETAT
	extern struct domain atalkdomain;
#endif
#if INET6
	extern struct domain inet6domain;
#endif
#if IPSEC
	extern struct domain keydomain;
#endif

	/*
	 * Add all the static domains to the domains list
	 */

	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
	concat_domain(&localdomain);
	concat_domain(&routedomain);
	concat_domain(&inetdomain);
#if NETAT
	concat_domain(&atalkdomain);
#endif
#if INET6
	concat_domain(&inet6domain);
#endif
#if IPSEC
	concat_domain(&keydomain);
#endif

#if NS
	concat_domain(&nsdomain);
#endif
#if ISO
	concat_domain(&isodomain);
#endif
#if CCITT
	concat_domain(&ccittdomain);
#endif
	concat_domain(&ndrvdomain);

	concat_domain(&systemdomain);

	/*
	 * Now ask them all to init (XXX including the routing domain,
	 * see above)
	 */
	for (dp = domains; dp; dp = dp->dom_next)
		init_domain(dp);

	timeout(pffasttimo, NULL, 1);
	timeout(pfslowtimo, NULL, 1);
	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
}

struct protosw *
pffindtype(family, type)
	int family, type;
{
	register struct domain *dp;
	register struct protosw *pr;

	for (dp = domains; dp; dp = dp->dom_next)
		if (dp->dom_family == family)
			goto found;
	return (0);
found:
	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
		if (pr->pr_type && pr->pr_type == type)
			return (pr);
	return (0);
}

struct domain *
pffinddomain(int pf)
{	struct domain *dp;

	dp = domains;
	while (dp)
	{	if (dp->dom_family == pf)
			return(dp);
		dp = dp->dom_next;
	}
	return(NULL);
}

struct protosw *
pffindproto(family, protocol, type)
	int family, protocol, type;
{
	register struct domain *dp;
	register struct protosw *pr;
	struct protosw *maybe = 0;

	if (family == 0)
		return (0);
	for (dp = domains; dp; dp = dp->dom_next)
		if (dp->dom_family == family)
			goto found;
	return (0);
found:
	for (pr = dp->dom_protosw; pr; pr = pr->pr_next) {
		if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
			return (pr);

		if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
		    pr->pr_protocol == 0 && maybe == (struct protosw *)0)
			maybe = pr;
	}
	return (maybe);
}

int
net_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
	int *name;
	u_int namelen;
	void *oldp;
	size_t *oldlenp;
	void *newp;
	size_t newlen;
	struct proc *p;
{
	register struct domain *dp;
	register struct protosw *pr;
	int family, protocol;

	/*
	 * All sysctl names at this level are nonterminal;
	 * next two components are protocol family and protocol number,
	 * then at least one addition component.
	 */
	if (namelen < 3)
		return (EISDIR);		/* overloaded */
	family = name[0];
	protocol = name[1];

	if (family == 0)
		return (0);
	for (dp = domains; dp; dp = dp->dom_next)
		if (dp->dom_family == family)
			goto found;
	return (ENOPROTOOPT);
found:
	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
		if (pr->pr_protocol == protocol && pr->pr_sysctl)
			return ((*pr->pr_sysctl)(name + 2, namelen - 2,
			    oldp, oldlenp, newp, newlen));
	return (ENOPROTOOPT);
}

void
pfctlinput(cmd, sa)
	int cmd;
	struct sockaddr *sa;
{
	pfctlinput2(cmd, sa, (void*)0);
}

void
pfctlinput2(cmd, sa, ctlparam)
	int cmd;
	struct sockaddr *sa;
	void *ctlparam;
{
	struct domain *dp;
	struct protosw *pr;

	if (!sa)
		return;
	for (dp = domains; dp; dp = dp->dom_next)
		for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
			if (pr->pr_ctlinput)
				(*pr->pr_ctlinput)(cmd, sa, ctlparam);
}

void
pfslowtimo(arg)
	void *arg;
{
	register struct domain *dp;
	register struct protosw *pr;
	boolean_t 	funnel_state;

	funnel_state = thread_funnel_set(network_flock, TRUE);

	for (dp = domains; dp; dp = dp->dom_next)
		for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
			if (pr->pr_slowtimo)
				(*pr->pr_slowtimo)();
	timeout(pfslowtimo, NULL, hz/2);
        
	(void) thread_funnel_set(network_flock, FALSE);
}

void
pffasttimo(arg)
	void *arg;
{
	register struct domain *dp;
	register struct protosw *pr;
	boolean_t 	funnel_state;

	funnel_state = thread_funnel_set(network_flock, TRUE);

	for (dp = domains; dp; dp = dp->dom_next)
		for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
			if (pr->pr_fasttimo)
				(*pr->pr_fasttimo)();
	timeout(pffasttimo, NULL, hz/5);

	(void) thread_funnel_set(network_flock, FALSE);
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
	23	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	24	/*
	25	* Copyright (c) 1982, 1986, 1993
	26	* The Regents of the University of California. All rights reserved.
	27	*
	28	* Redistribution and use in source and binary forms, with or without
	29	* modification, are permitted provided that the following conditions
	30	* are met:
	31	* 1. Redistributions of source code must retain the above copyright
	32	* notice, this list of conditions and the following disclaimer.
	33	* 2. Redistributions in binary form must reproduce the above copyright
	34	* notice, this list of conditions and the following disclaimer in the
	35	* documentation and/or other materials provided with the distribution.
	36	* 3. All advertising materials mentioning features or use of this software
	37	* must display the following acknowledgement:
	38	* This product includes software developed by the University of
	39	* California, Berkeley and its contributors.
	40	* 4. Neither the name of the University nor the names of its contributors
	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*
	56	* @(#)uipc_domain.c 8.3 (Berkeley) 2/14/95
	57	*/
	58
	59	#include <sys/param.h>
	60	#include <sys/socket.h>
	61	#include <sys/protosw.h>
	62	#include <sys/domain.h>
	63	#include <sys/mbuf.h>
	64	#include <sys/time.h>
65	#include <sys/kernel.h>
66	#include <sys/systm.h>
67	#include <sys/proc.h>
68	#include <sys/sysctl.h>
69	#include <sys/syslog.h>
70	#include <sys/queue.h>
71
72	void pffasttimo __P((void *));
73	void pfslowtimo __P((void *));
74
75	/*
76	* Add/delete 'domain': Link structure into system list,
77	* invoke the domain init, and then the proto inits.
78	* To delete, just remove from the list (dom_refs must be zero)
79	*/
80
81
82	void init_domain(register struct domain *dp)
83	{
84	struct protosw *pr;
85
86	if (dp->dom_init)
87	(*dp->dom_init)();
88
89	/* and then init the currently installed protos in this domain */
90
91	for (pr = dp->dom_protosw; pr; pr = pr->pr_next) {
92	if (pr->pr_usrreqs == 0)
93	panic("domaininit: %ssw[%d] has no usrreqs!",
94	dp->dom_name,
95	(int)(pr - dp->dom_protosw));
96
97	if (pr->pr_init)
98	(*pr->pr_init)();
99	}
100
101	/* Recompute for new protocol */
102	if (max_linkhdr < 16) /* XXX - Sheesh; everything's ether? */
103	max_linkhdr = 16;
104	if (dp->dom_protohdrlen > max_protohdr)
105	max_protohdr = dp->dom_protohdrlen;
106	max_hdr = max_linkhdr + max_protohdr;
107	max_datalen = MHLEN - max_hdr;
108	}
109
110	void concat_domain(struct domain *dp)
111	{
112	dp->dom_next = domains;
113	domains = dp;
114	}
115
116	void
117	net_add_domain(register struct domain *dp)
118	{ register struct protosw *pr;
119	register int s;
120	extern int splhigh(void);
121	extern int splx(int);
122
123	kprintf("Adding domain %s (family %d)\n", dp->dom_name,
124	dp->dom_family);
125	/* First, link in the domain */
126	s = splhigh();
127
128	concat_domain(dp);
129
130	init_domain(dp);
131
132	splx(s);
133	}
134
135	int
136	net_del_domain(register struct domain *dp)
137	{ register struct domain dp1, dp2;
138	register int s, retval = 0;
139	extern int splhigh(void);
140	extern int splx(int);
141
142	if (dp->dom_refs)
143	return(EBUSY);
144
145	s = splhigh();
146
147	for (dp2 = NULL, dp1 = domains; dp1; dp2 = dp1, dp1 = dp1->dom_next)
148	{ if (dp == dp1)
149	break;
150	}
151	if (dp1)
152	{ if (dp2)
153	dp2->dom_next = dp1->dom_next;
154	else
155	domains = dp1->dom_next;
156	} else
157	retval = EPFNOSUPPORT;
158	splx(s);
159
160	return(retval);
161	}
162
163	/*
164	* net_add_proto - link a protosw into a domain's protosw chain
165	*/
166	int
167	net_add_proto(register struct protosw *pp,
168	register struct domain *dp)
169	{ register struct protosw pp1, pp2;
170	register int s;
171	extern int splhigh(void);
172	extern int splx(int);
173
174	s = splhigh();
175	for (pp2 = NULL, pp1 = dp->dom_protosw; pp1; pp1 = pp1->pr_next)
176	{ if (pp1->pr_type == pp->pr_type &&
177	pp1->pr_protocol == pp->pr_protocol) {
178	splx(s);
179	return(EEXIST);
180	}
181	pp2 = pp1;
182	}
183	if (pp2 == NULL)
184	dp->dom_protosw = pp;
185	else
186	pp2->pr_next = pp;
187	pp->pr_next = NULL;
188	TAILQ_INIT(&pp->pr_sfilter);
189	if (pp->pr_init)
190	(*pp->pr_init)();
191
192	/* Make sure pr_init isn't called again!! */
193	pp->pr_init = 0;
194	splx(s);
195	return(0);
196	}
197
198	/*
199	* net_del_proto - remove a protosw from a domain's protosw chain.
200	* Search the protosw chain for the element with matching data.
201	* Then unlink and return.
202	*/
203	int
204	net_del_proto(register int type,
205	register int protocol,
206	register struct domain *dp)
207	{ register struct protosw pp1, pp2;
208	int s;
209	extern int splhigh(void);
210	extern int splx(int);
211
212	s = splhigh();
213	for (pp2 = NULL, pp1 = dp->dom_protosw; pp1; pp1 = pp1->pr_next)
214	{ if (pp1->pr_type == type &&
215	pp1->pr_protocol == protocol)
216	break;
217	pp2 = pp1;
218	}
219	if (pp1 == NULL) {
220	splx(s);
221	return(ENXIO);
222	}
223	if (pp2)
224	pp2->pr_next = pp1->pr_next;
225	else
226	dp->dom_protosw = pp1->pr_next;
227	splx(s);
228	return(0);
229	}
230
231
232	void
233	domaininit()
234	{ register struct domain *dp;
235	register struct protosw *pr;
236	extern struct domain localdomain, routedomain, ndrvdomain, inetdomain;
237	extern struct domain systemdomain;
238	#if NS
239	extern struct domain nsdomain;
240	#endif
241	#if ISO
242	extern struct domain isodomain;
243	#endif
244	#if CCITT
245	extern struct domain ccittdomain;
246	#endif
247
248	#if NETAT
249	extern struct domain atalkdomain;
250	#endif
251	#if INET6
252	extern struct domain inet6domain;
253	#endif
254	#if IPSEC
255	extern struct domain keydomain;
256	#endif
257
258	/*
259	* Add all the static domains to the domains list
260	*/
261
262	thread_funnel_switch(KERNEL_FUNNEL, NETWORK_FUNNEL);
263	concat_domain(&localdomain);
264	concat_domain(&routedomain);
265	concat_domain(&inetdomain);
266	#if NETAT
267	concat_domain(&atalkdomain);
268	#endif
269	#if INET6
270	concat_domain(&inet6domain);
271	#endif
272	#if IPSEC
273	concat_domain(&keydomain);
274	#endif
275
276	#if NS
277	concat_domain(&nsdomain);
278	#endif
279	#if ISO
280	concat_domain(&isodomain);
281	#endif
282	#if CCITT
283	concat_domain(&ccittdomain);
284	#endif
285	concat_domain(&ndrvdomain);
286
287	concat_domain(&systemdomain);
288
289	/*
290	* Now ask them all to init (XXX including the routing domain,
291	* see above)
292	*/
293	for (dp = domains; dp; dp = dp->dom_next)
294	init_domain(dp);
295
296	timeout(pffasttimo, NULL, 1);
297	timeout(pfslowtimo, NULL, 1);
298	thread_funnel_switch(NETWORK_FUNNEL, KERNEL_FUNNEL);
299	}
300
301	struct protosw *
302	pffindtype(family, type)
303	int family, type;
304	{
305	register struct domain *dp;
306	register struct protosw *pr;
307
308	for (dp = domains; dp; dp = dp->dom_next)
309	if (dp->dom_family == family)
310	goto found;
311	return (0);
312	found:
313	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
314	if (pr->pr_type && pr->pr_type == type)
315	return (pr);
316	return (0);
317	}
318
319	struct domain *
320	pffinddomain(int pf)
321	{ struct domain *dp;
322
323	dp = domains;
324	while (dp)
325	{ if (dp->dom_family == pf)
326	return(dp);
327	dp = dp->dom_next;
328	}
329	return(NULL);
330	}
331
332	struct protosw *
333	pffindproto(family, protocol, type)
334	int family, protocol, type;
335	{
336	register struct domain *dp;
337	register struct protosw *pr;
338	struct protosw *maybe = 0;
339
340	if (family == 0)
341	return (0);
342	for (dp = domains; dp; dp = dp->dom_next)
343	if (dp->dom_family == family)
344	goto found;
345	return (0);
346	found:
347	for (pr = dp->dom_protosw; pr; pr = pr->pr_next) {
348	if ((pr->pr_protocol == protocol) && (pr->pr_type == type))
349	return (pr);
350
351	if (type == SOCK_RAW && pr->pr_type == SOCK_RAW &&
352	pr->pr_protocol == 0 && maybe == (struct protosw *)0)
353	maybe = pr;
354	}
355	return (maybe);
356	}
357
358	int
359	net_sysctl(name, namelen, oldp, oldlenp, newp, newlen, p)
360	int *name;
361	u_int namelen;
362	void *oldp;
363	size_t *oldlenp;
364	void *newp;
365	size_t newlen;
366	struct proc *p;
367	{
368	register struct domain *dp;
369	register struct protosw *pr;
370	int family, protocol;
371
372	/*
373	* All sysctl names at this level are nonterminal;
374	* next two components are protocol family and protocol number,
375	* then at least one addition component.
376	*/
377	if (namelen < 3)
378	return (EISDIR); /* overloaded */
379	family = name[0];
380	protocol = name[1];
381
382	if (family == 0)
383	return (0);
384	for (dp = domains; dp; dp = dp->dom_next)
385	if (dp->dom_family == family)
386	goto found;
387	return (ENOPROTOOPT);
388	found:
389	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
390	if (pr->pr_protocol == protocol && pr->pr_sysctl)
391	return ((*pr->pr_sysctl)(name + 2, namelen - 2,
392	oldp, oldlenp, newp, newlen));
393	return (ENOPROTOOPT);
394	}
395
396	void
397	pfctlinput(cmd, sa)
398	int cmd;
399	struct sockaddr *sa;
400	{
9bccf70c A	401	pfctlinput2(cmd, sa, (void*)0);
	402	}
	403
	404	void
	405	pfctlinput2(cmd, sa, ctlparam)
	406	int cmd;
	407	struct sockaddr *sa;
	408	void *ctlparam;
	409	{
	410	struct domain *dp;
	411	struct protosw *pr;
1c79356b	412
9bccf70c A	413	if (!sa)
9bccf70c A	414	return;
1c79356b A	415	for (dp = domains; dp; dp = dp->dom_next)
	416	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
	417	if (pr->pr_ctlinput)
9bccf70c	418	(*pr->pr_ctlinput)(cmd, sa, ctlparam);
1c79356b A	419	}
	420
	421	void
	422	pfslowtimo(arg)
	423	void *arg;
	424	{
	425	register struct domain *dp;
	426	register struct protosw *pr;
	427	boolean_t funnel_state;
	428
	429	funnel_state = thread_funnel_set(network_flock, TRUE);
	430
	431	for (dp = domains; dp; dp = dp->dom_next)
	432	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
	433	if (pr->pr_slowtimo)
	434	(*pr->pr_slowtimo)();
	435	timeout(pfslowtimo, NULL, hz/2);
	436
	437	(void) thread_funnel_set(network_flock, FALSE);
	438	}
	439
	440	void
	441	pffasttimo(arg)
	442	void *arg;
	443	{
	444	register struct domain *dp;
	445	register struct protosw *pr;
	446	boolean_t funnel_state;
	447
	448	funnel_state = thread_funnel_set(network_flock, TRUE);
	449
	450	for (dp = domains; dp; dp = dp->dom_next)
	451	for (pr = dp->dom_protosw; pr; pr = pr->pr_next)
	452	if (pr->pr_fasttimo)
	453	(*pr->pr_fasttimo)();
	454	timeout(pffasttimo, NULL, hz/5);
	455
	456	(void) thread_funnel_set(network_flock, FALSE);
	457	}