1/*
2 * Copyright (c) 2000-2014 Apple Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
29/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
30/*
31 * Copyright (c) 1982, 1986, 1993
32 *	The Regents of the University of California.  All rights reserved.
33 *
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted provided that the following conditions
36 * are met:
37 * 1. Redistributions of source code must retain the above copyright
38 *    notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 *    notice, this list of conditions and the following disclaimer in the
41 *    documentation and/or other materials provided with the distribution.
42 * 3. All advertising materials mentioning features or use of this software
43 *    must display the following acknowledgement:
44 *	This product includes software developed by the University of
45 *	California, Berkeley and its contributors.
46 * 4. Neither the name of the University nor the names of its contributors
47 *    may be used to endorse or promote products derived from this software
48 *    without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * SUCH DAMAGE.
61 *
62 *	@(#)protosw.h	8.1 (Berkeley) 6/2/93
63 * $FreeBSD: src/sys/sys/protosw.h,v 1.28.2.2 2001/07/03 11:02:01 ume Exp $
64 */
65
66#ifndef _SYS_PROTOSW_H_
67#define	_SYS_PROTOSW_H_
68
69#include <sys/appleapiopts.h>
70#include <sys/cdefs.h>
71
72/* XXX: this will go away */
73#define	PR_SLOWHZ	2		/* 2 slow timeouts per second */
74
75#ifdef KERNEL_PRIVATE
76#include <sys/socket.h>
77#include <sys/socketvar.h>
78#include <sys/queue.h>
79#include <kern/locks.h>
80
81/* Forward declare these structures referenced from prototypes below. */
82struct mbuf;
83struct proc;
84struct sockaddr;
85struct socket;
86struct sockopt;
87struct socket_filter;
88#ifdef XNU_KERNEL_PRIVATE
89struct domain_old;
90#endif /* XNU_KERNEL_PRIVATE */
91
92#pragma pack(4)
93
94#ifdef XNU_KERNEL_PRIVATE
95/*
96 * Legacy protocol switch table.
97 *
98 * NOTE: Do not modify this structure, as there are modules outside of xnu
99 * which rely on the size and layout for binary compatibility.  This structure
100 * is simply used by the exported net_{add,del}_proto_old, pffindproto_old
101 * routines, and by the domain_old structure.  Internally, protocol switch
102 * tables are stored in the private variant of protosw defined down below.
103 */
104struct protosw_old {
105#else
106struct protosw {
107#endif /* !XNU_KERNEL_PRIVATE */
108	short	pr_type;		/* socket type used for */
109	struct	domain *pr_domain;	/* domain protocol a member of */
110	short	pr_protocol;		/* protocol number */
111	unsigned int pr_flags;		/* see below */
112	/*
113	 * protocol-protocol hooks
114	 */
115	void	(*pr_input)		/* input to protocol (from below) */
116		    (struct mbuf *, int len);
117	int	(*pr_output)		/* output to protocol (from above) */
118		    (struct mbuf *m, struct socket *so);
119	void	(*pr_ctlinput)		/* control input (from below) */
120		    (int, struct sockaddr *, void *);
121	int	(*pr_ctloutput)		/* control output (from above) */
122		    (struct socket *, struct sockopt *);
123	/*
124	 * user-protocol hook
125	 */
126	void	*pr_ousrreq;
127	/*
128	 * utility hooks
129	 */
130	void	(*pr_init)(void);	/* initialization hook */
131	void	(*pr_unused)(void);	/* placeholder - fasttimo is removed */
132	void	(*pr_unused2)(void);	/* placeholder - slowtimo is removed */
133	void	(*pr_drain)(void);	/* flush any excess space possible */
134	int	(*pr_sysctl)		/* sysctl for protocol */
135		    (int *, u_int, void *, size_t *, void *, size_t);
136#ifdef XNU_KERNEL_PRIVATE
137	struct	pr_usrreqs_old *pr_usrreqs; /* supersedes pr_usrreq() */
138#else
139	struct	pr_usrreqs *pr_usrreqs;	/* supersedes pr_usrreq() */
140#endif /* !XNU_KERNEL_PRIVATE */
141	int	(*pr_lock)		/* lock function for protocol */
142		    (struct socket *so, int locktype, void *debug);
143	int	(*pr_unlock)		/* unlock for protocol */
144		    (struct socket *so, int locktype, void *debug);
145	lck_mtx_t *(*pr_getlock)	/* retrieve protocol lock */
146		    (struct socket *so, int locktype);
147	/*
148	 * Implant hooks
149	 */
150	TAILQ_HEAD(, socket_filter) pr_filter_head;
151#ifdef XNU_KERNEL_PRIVATE
152	struct protosw_old *pr_next;	/* chain for domain */
153#else
154	struct protosw *pr_next;	/* chain for domain */
155#endif /* !XNU_KERNEL_PRIVATE */
156	u_int32_t	reserved[1];	/* padding for future use */
157};
158
159#pragma pack()
160
161#ifdef XNU_KERNEL_PRIVATE
162/*
163 * Protocol switch table.
164 *
165 * Each protocol has a handle initializing one of these structures,
166 * which is used for protocol-protocol and system-protocol communication.
167 *
168 * A protocol is called through the pr_init entry before any other.
169 * The system will call the pr_drain entry if it is low on space and this
170 * should throw away any non-critical data.
171 *
172 * Protocols pass data between themselves as chains of mbufs using
173 * the pr_input and pr_output hooks.  Pr_input passes data up (towards
174 * the users) and pr_output passes it down (towards the interfaces); control
175 * information passes up and down on pr_ctlinput and pr_ctloutput.
176 * The protocol is responsible for the space occupied by any the
177 * arguments to these entries and must dispose it.
178 *
179 * The userreq routine interfaces protocols to the system and is
180 * described below.
181 *
182 * After a protocol is attached, its pr_domain will be set to the domain
183 * which the protocol belongs to, and its pr_protosw will be set to the
184 * address of the protosw instance.  The latter is useful for finding
185 * the real/original protosw instance, in the event so_proto is altered
186 * to point to an alternative/derivative protosw.  E.g. the list of
187 * socket filters is only applicable on the original protosw instance.
188 *
189 * Internal, private and extendable representation of protosw.
190 */
191struct protosw {
192	TAILQ_ENTRY(protosw) pr_entry; /* chain for domain */
193	struct	domain *pr_domain;	/* domain protocol a member of */
194	struct protosw *pr_protosw;	/* pointer to self */
195	u_int16_t pr_type;		/* socket type used for */
196	u_int16_t pr_protocol;		/* protocol number */
197	u_int32_t pr_flags;		/* see below */
198	/*
199	 * protocol-protocol hooks
200	 */
201	void	(*pr_input)		/* input to protocol (from below) */
202		    (struct mbuf *, int len);
203	int	(*pr_output)		/* output to protocol (from above) */
204		    (struct mbuf *m, struct socket *so);
205	void	(*pr_ctlinput)		/* control input (from below) */
206		    (int, struct sockaddr *, void *);
207	int	(*pr_ctloutput)		/* control output (from above) */
208		    (struct socket *, struct sockopt *);
209	/*
210	 * user-protocol hook
211	 */
212	struct	pr_usrreqs *pr_usrreqs;	/* user request; see list below */
213	/*
214	 * utility hooks
215	 */
216	void	(*pr_init)		/* initialization hook */
217		    (struct protosw *, struct domain *);
218	void	(*pr_drain)(void);	/* flush any excess space possible */
219	int	(*pr_sysctl)		/* sysctl for protocol */
220		    (int *, u_int, void *, size_t *, void *, size_t);
221	int	(*pr_lock)		/* lock function for protocol */
222		    (struct socket *so, int locktype, void *debug);
223	int	(*pr_unlock)		/* unlock for protocol */
224		    (struct socket *so, int locktype, void *debug);
225	lck_mtx_t *(*pr_getlock)	/* retrieve protocol lock */
226		    (struct socket *so, int locktype);
227	/*
228	 * misc
229	 */
230	TAILQ_HEAD(, socket_filter) pr_filter_head;
231	struct protosw_old *pr_old;
232};
233#endif /* XNU_KERNEL_PRIVATE */
234
235/*
236 * Values for pr_flags.
237 * PR_ADDR requires PR_ATOMIC;
238 * PR_ADDR and PR_CONNREQUIRED are mutually exclusive.
239 * PR_IMPLOPCL means that the protocol allows sendto without prior connect,
240 *	and the protocol understands the MSG_EOF flag.  The first property is
241 *	is only relevant if PR_CONNREQUIRED is set (otherwise sendto is allowed
242 *	anyhow).
243 */
244#define	PR_ATOMIC	0x01	/* exchange atomic messages only */
245#define	PR_ADDR		0x02	/* addresses given with messages */
246#define	PR_CONNREQUIRED	0x04	/* connection required by protocol */
247#define	PR_WANTRCVD	0x08	/* want PRU_RCVD calls */
248#define	PR_RIGHTS	0x10	/* passes capabilities */
249#define	PR_IMPLOPCL	0x20	/* implied open/close */
250#define	PR_LASTHDR	0x40	/* enforce ipsec policy; last header */
251#define	PR_PROTOLOCK	0x80	/* protocol takes care of it's own locking */
252#define	PR_PCBLOCK	0x100	/* protocol supports per pcb locking */
253#define	PR_DISPOSE	0x200	/* protocol requires late lists disposal */
254#ifdef BSD_KERNEL_PRIVATE
255#define	PR_INITIALIZED	0x400	/* protocol has been initialized */
256#define	PR_ATTACHED	0x800	/* protocol is attached to a domain */
257#define	PR_MULTICONN	0x1000	/* supports multiple connect calls */
258#define	PR_EVCONNINFO	0x2000	/* protocol generates conninfo event */
259#define	PR_OLD		0x10000000 /* added via net_add_proto */
260
261/* pseudo-public domain flags */
262#define	PRF_USERFLAGS							\
263	(PR_ATOMIC|PR_ADDR|PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS|	\
264	PR_IMPLOPCL|PR_LASTHDR|PR_PROTOLOCK|PR_PCBLOCK|PR_DISPOSE)
265#endif /* BSD_KERNEL_PRIVATE */
266
267#ifdef BSD_KERNEL_PRIVATE
268/*
269 * The arguments to the ctlinput routine are
270 *	(*protosw[].pr_ctlinput)(cmd, sa, arg);
271 * where cmd is one of the commands below, sa is a pointer to a sockaddr,
272 * and arg is a `void *' argument used within a protocol family.
273 */
274#define	PRC_IFDOWN		0	/* interface transition */
275#define	PRC_ROUTEDEAD		1	/* select new route if possible ??? */
276#define	PRC_IFUP		2	/* interface has come back up */
277#define	PRC_QUENCH2		3	/* DEC congestion bit says slow down */
278#define	PRC_QUENCH		4	/* some one said to slow down */
279#define	PRC_MSGSIZE		5	/* message size forced drop */
280#define	PRC_HOSTDEAD		6	/* host appears to be down */
281#define	PRC_HOSTUNREACH		7	/* deprecated (use PRC_UNREACH_HOST) */
282#define	PRC_UNREACH_NET		8	/* no route to network */
283#define	PRC_UNREACH_HOST	9	/* no route to host */
284#define	PRC_UNREACH_PROTOCOL	10	/* dst says bad protocol */
285#define	PRC_UNREACH_PORT	11	/* bad port # */
286/* was	PRC_UNREACH_NEEDFRAG	12	   (use PRC_MSGSIZE) */
287#define	PRC_UNREACH_SRCFAIL	13	/* source route failed */
288#define	PRC_REDIRECT_NET	14	/* net routing redirect */
289#define	PRC_REDIRECT_HOST	15	/* host routing redirect */
290#define	PRC_REDIRECT_TOSNET	16	/* redirect for type of service & net */
291#define	PRC_REDIRECT_TOSHOST	17	/* redirect for tos & host */
292#define	PRC_TIMXCEED_INTRANS	18	/* packet lifetime expired in transit */
293#define	PRC_TIMXCEED_REASS	19	/* lifetime expired on reass q */
294#define	PRC_PARAMPROB		20	/* header incorrect */
295#define	PRC_UNREACH_ADMIN_PROHIB 21	/* packet administrativly prohibited */
296
297#define	PRC_NCMDS		22
298
299#define	PRC_IS_REDIRECT(cmd)	\
300	((cmd) >= PRC_REDIRECT_NET && (cmd) <= PRC_REDIRECT_TOSHOST)
301
302#ifdef PRCREQUESTS
303char	*prcrequests[] = {
304	"IFDOWN", "ROUTEDEAD", "IFUP", "DEC-BIT-QUENCH2",
305	"QUENCH", "MSGSIZE", "HOSTDEAD", "#7",
306	"NET-UNREACH", "HOST-UNREACH", "PROTO-UNREACH", "PORT-UNREACH",
307	"#12", "SRCFAIL-UNREACH", "NET-REDIRECT", "HOST-REDIRECT",
308	"TOSNET-REDIRECT", "TOSHOST-REDIRECT", "TX-INTRANS", "TX-REASS",
309	"PARAMPROB", "ADMIN-UNREACH"
310};
311#endif /* PRCREQUESTS */
312
313/*
314 * The arguments to ctloutput are:
315 *	(*protosw[].pr_ctloutput)(req, so, level, optname, optval, p);
316 * req is one of the actions listed below, so is a (struct socket *),
317 * level is an indication of which protocol layer the option is intended.
318 * optname is a protocol dependent socket option request,
319 * optval is a pointer to a mbuf-chain pointer, for value-return results.
320 * The protocol is responsible for disposal of the mbuf chain *optval
321 * if supplied,
322 * the caller is responsible for any space held by *optval, when returned.
323 * A non-zero return from usrreq gives an
324 * UNIX error number which should be passed to higher level software.
325 */
326#define	PRCO_GETOPT	0
327#define	PRCO_SETOPT	1
328
329#define	PRCO_NCMDS	2
330
331#ifdef PRCOREQUESTS
332char	*prcorequests[] = {
333	"GETOPT", "SETOPT",
334};
335#endif /* PRCOREQUESTS */
336
337/*
338 * In earlier BSD network stacks, a single pr_usrreq() function pointer was
339 * invoked with an operation number indicating what operation was desired.
340 * We now provide individual function pointers which protocols can implement,
341 * which offers a number of benefits (such as type checking for arguments).
342 * These older constants are still present in order to support TCP debugging.
343 */
344#define	PRU_ATTACH		0	/* attach protocol to up */
345#define	PRU_DETACH		1	/* detach protocol from up */
346#define	PRU_BIND		2	/* bind socket to address */
347#define	PRU_LISTEN		3	/* listen for connection */
348#define	PRU_CONNECT		4	/* establish connection to peer */
349#define	PRU_ACCEPT		5	/* accept connection from peer */
350#define	PRU_DISCONNECT		6	/* disconnect from peer */
351#define	PRU_SHUTDOWN		7	/* won't send any more data */
352#define	PRU_RCVD		8	/* have taken data; more room now */
353#define	PRU_SEND		9	/* send this data */
354#define	PRU_ABORT		10	/* abort (fast DISCONNECT, DETATCH) */
355#define	PRU_CONTROL		11	/* control operations on protocol */
356#define	PRU_SENSE		12	/* return status into m */
357#define	PRU_RCVOOB		13	/* retrieve out of band data */
358#define	PRU_SENDOOB		14	/* send out of band data */
359#define	PRU_SOCKADDR		15	/* fetch socket's address */
360#define	PRU_PEERADDR		16	/* fetch peer's address */
361#define	PRU_CONNECT2		17	/* connect two sockets */
362/* begin for protocols internal use */
363#define	PRU_FASTTIMO		18	/* 200ms timeout */
364#define	PRU_SLOWTIMO		19	/* 500ms timeout */
365#define	PRU_PROTORCV		20	/* receive from below */
366#define	PRU_PROTOSEND		21	/* send to below */
367/* end for protocol's internal use */
368#define	PRU_SEND_EOF		22	/* send and close */
369#define	PRU_NREQ		22
370
371#ifdef PRUREQUESTS
372char *prurequests[] = {
373	"ATTACH",	"DETACH",	"BIND",		"LISTEN",
374	"CONNECT",	"ACCEPT",	"DISCONNECT",	"SHUTDOWN",
375	"RCVD",		"SEND",		"ABORT",	"CONTROL",
376	"SENSE",	"RCVOOB",	"SENDOOB",	"SOCKADDR",
377	"PEERADDR",	"CONNECT2",	"FASTTIMO",	"SLOWTIMO",
378	"PROTORCV",	"PROTOSEND",	"SEND_EOF",
379};
380#endif /* PRUREQUESTS */
381#endif /* BSD_KERNEL_PRIVATE */
382
383struct ifnet;
384struct stat;
385struct ucred;
386struct uio;
387
388#ifdef XNU_KERNEL_PRIVATE
389/*
390 * Legacy user-protocol hooks.
391 *
392 * NOTE: Do not modify this structure, as there are modules outside of xnu
393 * which rely on the size and layout for binary compatibility.  This structure
394 * is simply used by the protosw_old structure.  Internally, user-protocol
395 * hooks use the private variant of pr_usrreqs defined down below.
396 */
397struct pr_usrreqs_old {
398#else
399struct pr_usrreqs {
400#endif /* !XNU_KERNEL_PRIVATE */
401	int	(*pru_abort)(struct socket *so);
402	int	(*pru_accept)(struct socket *so, struct sockaddr **nam);
403	int	(*pru_attach)(struct socket *so, int proto, struct proc *p);
404	int	(*pru_bind)(struct socket *so, struct sockaddr *nam,
405		    struct proc *p);
406	int	(*pru_connect)(struct socket *so, struct sockaddr *nam,
407		    struct proc *p);
408	int	(*pru_connect2)(struct socket *so1, struct socket *so2);
409	int	(*pru_control)(struct socket *so, u_long cmd, caddr_t data,
410		    struct ifnet *ifp, struct proc *p);
411	int	(*pru_detach)(struct socket *so);
412	int	(*pru_disconnect)(struct socket *so);
413	int	(*pru_listen)(struct socket *so, struct proc *p);
414	int	(*pru_peeraddr)(struct socket *so, struct sockaddr **nam);
415	int	(*pru_rcvd)(struct socket *so, int flags);
416	int	(*pru_rcvoob)(struct socket *so, struct mbuf *m, int flags);
417	int	(*pru_send)(struct socket *so, int flags, struct mbuf *m,
418		    struct sockaddr *addr, struct mbuf *control,
419		    struct proc *p);
420	int	(*pru_sense)(struct socket *so, void  *sb, int isstat64);
421	int	(*pru_shutdown)(struct socket *so);
422	int	(*pru_sockaddr)(struct socket *so, struct sockaddr **nam);
423	int	(*pru_sosend)(struct socket *so, struct sockaddr *addr,
424		    struct uio *uio, struct mbuf *top, struct mbuf *control,
425		    int flags);
426	int	(*pru_soreceive)(struct socket *so, struct sockaddr **paddr,
427		    struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
428		    int *flagsp);
429	int	(*pru_sopoll)(struct socket *so, int events,
430		    struct ucred *cred, void *);
431};
432
433#ifdef XNU_KERNEL_PRIVATE
434/*
435 * If the ordering here looks odd, that's because it's alphabetical.  These
436 * should eventually be merged back into struct protosw.
437 *
438 * Internal, private and extendable representation of pr_usrreqs.
439 *
440 * NOTE: When adding new ones, also add default callbacks in pru_sanitize().
441 */
442struct pr_usrreqs {
443	uint32_t pru_flags;	/* see PRUF flags below */
444	int	(*pru_abort)(struct socket *);
445	int	(*pru_accept)(struct socket *, struct sockaddr **);
446	int	(*pru_attach)(struct socket *, int proto, struct proc *);
447	int	(*pru_bind)(struct socket *, struct sockaddr *, struct proc *);
448	int	(*pru_connect)(struct socket *, struct sockaddr *,
449		    struct proc *);
450	int	(*pru_connect2)(struct socket *, struct socket *);
451	int	(*pru_connectx)(struct socket *, struct sockaddr_list **,
452		    struct sockaddr_list **, struct proc *, uint32_t,
453		    associd_t, connid_t *, uint32_t, void *, uint32_t);
454	int	(*pru_control)(struct socket *, u_long, caddr_t,
455		    struct ifnet *, struct proc *);
456	int	(*pru_detach)(struct socket *);
457	int	(*pru_disconnect)(struct socket *);
458	int	(*pru_disconnectx)(struct socket *, associd_t, connid_t);
459	int	(*pru_listen)(struct socket *, struct proc *);
460	int	(*pru_peeloff)(struct socket *, associd_t, struct socket **);
461	int	(*pru_peeraddr)(struct socket *, struct sockaddr **);
462	int	(*pru_rcvd)(struct socket *, int);
463	int	(*pru_rcvoob)(struct socket *, struct mbuf *, int);
464	int	(*pru_send)(struct socket *, int, struct mbuf *,
465		    struct sockaddr *, struct mbuf *, struct proc *);
466	int	(*pru_send_list)(struct socket *, int, struct mbuf *,
467		    struct sockaddr *, struct mbuf *, struct proc *);
468#define	PRUS_OOB	0x1
469#define	PRUS_EOF	0x2
470#define	PRUS_MORETOCOME	0x4
471	int	(*pru_sense)(struct socket *, void *, int);
472	int	(*pru_shutdown)(struct socket *);
473	int	(*pru_sockaddr)(struct socket *, struct sockaddr **);
474	int	(*pru_sopoll)(struct socket *, int, struct ucred *, void *);
475	int	(*pru_soreceive)(struct socket *, struct sockaddr **,
476		    struct uio *, struct mbuf **, struct mbuf **, int *);
477	int	(*pru_soreceive_list)(struct socket *, struct sockaddr **,
478		    struct uio **, u_int, struct mbuf **, struct mbuf **, int *);
479	int	(*pru_sosend)(struct socket *, struct sockaddr *,
480		    struct uio *, struct mbuf *, struct mbuf *, int);
481	int	(*pru_sosend_list)(struct socket *, struct sockaddr *,
482		    struct uio **, u_int, struct mbuf *, struct mbuf *, int);
483	int	(*pru_socheckopt)(struct socket *, struct sockopt *);
484};
485
486/* Values for pru_flags  */
487#define	PRUF_OLD	0x10000000	/* added via net_add_proto */
488
489#endif /* XNU_KERNEL_PRIVATE */
490
491__BEGIN_DECLS
492extern int pru_abort_notsupp(struct socket *so);
493extern int pru_accept_notsupp(struct socket *so, struct sockaddr **nam);
494extern int pru_attach_notsupp(struct socket *so, int proto, struct proc *p);
495extern int pru_bind_notsupp(struct socket *so, struct sockaddr *nam,
496    struct proc *p);
497extern int pru_connect_notsupp(struct socket *so, struct sockaddr *nam,
498    struct proc *p);
499extern int pru_connect2_notsupp(struct socket *so1, struct socket *so2);
500#ifdef XNU_KERNEL_PRIVATE
501extern int pru_connectx_notsupp(struct socket *, struct sockaddr_list **,
502    struct sockaddr_list **, struct proc *, uint32_t, associd_t, connid_t *,
503    uint32_t, void *, uint32_t);
504extern int pru_disconnectx_notsupp(struct socket *, associd_t, connid_t);
505extern int pru_socheckopt_null(struct socket *, struct sockopt *);
506extern int pru_peeloff_notsupp(struct socket *, associd_t, struct socket **);
507#endif /* XNU_KERNEL_PRIVATE */
508extern int pru_control_notsupp(struct socket *so, u_long cmd, caddr_t data,
509    struct ifnet *ifp, struct proc *p);
510extern int pru_detach_notsupp(struct socket *so);
511extern int pru_disconnect_notsupp(struct socket *so);
512extern int pru_listen_notsupp(struct socket *so, struct proc *p);
513extern int pru_peeraddr_notsupp(struct socket *so, struct sockaddr **nam);
514extern int pru_rcvd_notsupp(struct socket *so, int flags);
515extern int pru_rcvoob_notsupp(struct socket *so, struct mbuf *m, int flags);
516extern int pru_send_notsupp(struct socket *so, int flags, struct mbuf *m,
517    struct sockaddr *addr, struct mbuf *control, struct proc *p);
518extern int pru_send_list_notsupp(struct socket *so, int flags, struct mbuf *m,
519    struct sockaddr *addr, struct mbuf *control, struct proc *p);
520extern int pru_sense_null(struct socket *so, void * sb, int isstat64);
521extern int pru_shutdown_notsupp(struct socket *so);
522extern int pru_sockaddr_notsupp(struct socket *so, struct sockaddr **nam);
523extern int pru_sosend_notsupp(struct socket *so, struct sockaddr *addr,
524    struct uio *uio,  struct mbuf *top, struct mbuf *control, int flags);
525extern int pru_sosend_list_notsupp(struct socket *so, struct sockaddr *addr,
526    struct uio **uio, u_int, struct mbuf *top, struct mbuf *control, int flags);
527extern int pru_soreceive_notsupp(struct socket *so,
528    struct sockaddr **paddr, struct uio *uio, struct mbuf **mp0,
529    struct mbuf **controlp, int *flagsp);
530extern int pru_soreceive_list_notsupp(struct socket *so,
531    struct sockaddr **paddr, struct uio **uio, u_int, struct mbuf **mp0,
532    struct mbuf **controlp, int *flagsp);
533extern int pru_sopoll_notsupp(struct socket *so, int events,
534    struct ucred *cred, void *);
535#ifdef XNU_KERNEL_PRIVATE
536extern void pru_sanitize(struct pr_usrreqs *);
537extern void domaininit(void);
538extern void domainfin(void);
539extern void pfctlinput(int, struct sockaddr *);
540extern void pfctlinput2(int, struct sockaddr *, void *);
541extern struct protosw *pffindproto_locked(int, int, int);
542extern struct protosw *pffindprotonotype(int, int);
543extern struct protosw *pffindtype(int, int);
544extern struct protosw_old *pffindproto_old(int, int, int);
545extern int net_add_proto(struct protosw *, struct domain *, int);
546extern void net_init_proto(struct protosw *, struct domain *);
547extern int net_del_proto(int, int, struct domain *);
548extern int net_add_proto_old(struct protosw_old *, struct domain_old *);
549extern int net_del_proto_old(int, int, struct domain_old *);
550extern void net_update_uptime(void);
551extern void net_update_uptime_secs(uint64_t secs);
552extern u_int64_t net_uptime(void);
553extern void net_uptime2timeval(struct timeval *);
554#else
555extern int net_add_proto(struct protosw *, struct domain *);
556extern int net_del_proto(int, int, struct domain *);
557#endif /* XNU_KERNEL_PRIVATE */
558extern struct protosw *pffindproto(int family, int protocol, int type);
559__END_DECLS
560#endif /* KERNEL_PRIVATE */
561#endif	/* !_SYS_PROTOSW_H_ */
562