raw_ip.c revision 96972 
1/*
2 * Copyright (c) 1982, 1986, 1988, 1993
3 *	The Regents of the University of California.  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 *
33 *	@(#)raw_ip.c	8.7 (Berkeley) 5/15/95
34 * $FreeBSD: head/sys/netinet/raw_ip.c 96972 2002-05-20 05:41:09Z tanimura $
35 */
36
37#include "opt_inet6.h"
38#include "opt_ipsec.h"
39#include "opt_random_ip_id.h"
40
41#include <sys/param.h>
42#include <sys/kernel.h>
43#include <sys/lock.h>
44#include <sys/malloc.h>
45#include <sys/mbuf.h>
46#include <sys/proc.h>
47#include <sys/protosw.h>
48#include <sys/signalvar.h>
49#include <sys/socket.h>
50#include <sys/socketvar.h>
51#include <sys/sx.h>
52#include <sys/sysctl.h>
53#include <sys/systm.h>
54
55#include <vm/uma.h>
56
57#include <net/if.h>
58#include <net/route.h>
59
60#define _IP_VHL
61#include <netinet/in.h>
62#include <netinet/in_systm.h>
63#include <netinet/in_pcb.h>
64#include <netinet/in_var.h>
65#include <netinet/ip.h>
66#include <netinet/ip_var.h>
67#include <netinet/ip_mroute.h>
68
69#include <netinet/ip_fw.h>
70#include <netinet/ip_dummynet.h>
71
72#ifdef IPSEC
73#include <netinet6/ipsec.h>
74#endif /*IPSEC*/
75
76struct	inpcbhead ripcb;
77struct	inpcbinfo ripcbinfo;
78
79/* control hooks for ipfw and dummynet */
80ip_fw_ctl_t *ip_fw_ctl_ptr;
81ip_dn_ctl_t *ip_dn_ctl_ptr;
82
83/*
84 * Nominal space allocated to a raw ip socket.
85 */
86#define	RIPSNDQ		8192
87#define	RIPRCVQ		8192
88
89/*
90 * Raw interface to IP protocol.
91 */
92
93/*
94 * Initialize raw connection block q.
95 */
96void
97rip_init()
98{
99	LIST_INIT(&ripcb);
100	ripcbinfo.listhead = &ripcb;
101	/*
102	 * XXX We don't use the hash list for raw IP, but it's easier
103	 * to allocate a one entry hash list than it is to check all
104	 * over the place for hashbase == NULL.
105	 */
106	ripcbinfo.hashbase = hashinit(1, M_PCB, &ripcbinfo.hashmask);
107	ripcbinfo.porthashbase = hashinit(1, M_PCB, &ripcbinfo.porthashmask);
108	ripcbinfo.ipi_zone = uma_zcreate("ripcb", sizeof(struct inpcb),
109	    NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, UMA_ZONE_NOFREE);
110	uma_zone_set_max(ripcbinfo.ipi_zone, maxsockets);
111}
112
113static struct	sockaddr_in ripsrc = { sizeof(ripsrc), AF_INET };
114/*
115 * Setup generic address and protocol structures
116 * for raw_input routine, then pass them along with
117 * mbuf chain.
118 */
119void
120rip_input(m, off)
121	struct mbuf *m;
122	int off;
123{
124	register struct ip *ip = mtod(m, struct ip *);
125	register struct inpcb *inp;
126	struct inpcb *last = 0;
127	struct mbuf *opts = 0;
128	int proto = ip->ip_p;
129
130	ripsrc.sin_addr = ip->ip_src;
131	LIST_FOREACH(inp, &ripcb, inp_list) {
132#ifdef INET6
133		if ((inp->inp_vflag & INP_IPV4) == 0)
134			continue;
135#endif
136		if (inp->inp_ip_p && inp->inp_ip_p != proto)
137			continue;
138		if (inp->inp_laddr.s_addr &&
139                  inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
140			continue;
141		if (inp->inp_faddr.s_addr &&
142                  inp->inp_faddr.s_addr != ip->ip_src.s_addr)
143			continue;
144		if (last) {
145			struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
146
147#ifdef IPSEC
148			/* check AH/ESP integrity. */
149			if (n && ipsec4_in_reject_so(n, last->inp_socket)) {
150				m_freem(n);
151				ipsecstat.in_polvio++;
152				/* do not inject data to pcb */
153			} else
154#endif /*IPSEC*/
155			if (n) {
156				if (last->inp_flags & INP_CONTROLOPTS)
157					ip_savecontrol(last, &opts, ip, n);
158				else {
159					SOCK_LOCK(last->inp_socket);
160					if(last->inp_socket->so_options & SO_TIMESTAMP) {
161						SOCK_UNLOCK(last->inp_socket);
162						ip_savecontrol(last, &opts, ip, n);
163					} else
164						SOCK_UNLOCK(last->inp_socket);
165				}
166				if (sbappendaddr(&last->inp_socket->so_rcv,
167				    (struct sockaddr *)&ripsrc, n,
168				    opts) == 0) {
169					/* should notify about lost packet */
170					m_freem(n);
171					if (opts)
172					    m_freem(opts);
173				} else {
174					SOCK_LOCK(last->inp_socket);
175					sorwakeup(last->inp_socket);
176					SOCK_UNLOCK(last->inp_socket);
177				}
178				opts = 0;
179			}
180		}
181		last = inp;
182	}
183#ifdef IPSEC
184	/* check AH/ESP integrity. */
185	if (last && ipsec4_in_reject_so(m, last->inp_socket)) {
186		m_freem(m);
187		ipsecstat.in_polvio++;
188		ipstat.ips_delivered--;
189		/* do not inject data to pcb */
190	} else
191#endif /*IPSEC*/
192	if (last) {
193		if (last->inp_flags & INP_CONTROLOPTS)
194			ip_savecontrol(last, &opts, ip, m);
195		else {
196			SOCK_LOCK(last->inp_socket);
197			if (last->inp_socket->so_options & SO_TIMESTAMP) {
198				SOCK_UNLOCK(last->inp_socket);
199				ip_savecontrol(last, &opts, ip, m);
200			} else
201				SOCK_UNLOCK(last->inp_socket);
202		}
203		if (sbappendaddr(&last->inp_socket->so_rcv,
204		    (struct sockaddr *)&ripsrc, m, opts) == 0) {
205			m_freem(m);
206			if (opts)
207			    m_freem(opts);
208		} else {
209			SOCK_LOCK(last->inp_socket);
210			sorwakeup(last->inp_socket);
211			SOCK_UNLOCK(last->inp_socket);
212		}
213	} else {
214		m_freem(m);
215		ipstat.ips_noproto++;
216		ipstat.ips_delivered--;
217	}
218}
219
220/*
221 * Generate IP header and pass packet to ip_output.
222 * Tack on options user may have setup with control call.
223 */
224int
225rip_output(m, so, dst)
226	struct mbuf *m;
227	struct socket *so;
228	u_long dst;
229{
230	register struct ip *ip;
231	register struct inpcb *inp = sotoinpcb(so);
232	int flags;
233
234	SOCK_LOCK(so);
235	flags = (so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST;
236	SOCK_UNLOCK(so);
237	/*
238	 * If the user handed us a complete IP packet, use it.
239	 * Otherwise, allocate an mbuf for a header and fill it in.
240	 */
241	if ((inp->inp_flags & INP_HDRINCL) == 0) {
242		if (m->m_pkthdr.len + sizeof(struct ip) > IP_MAXPACKET) {
243			m_freem(m);
244			return(EMSGSIZE);
245		}
246		M_PREPEND(m, sizeof(struct ip), M_TRYWAIT);
247		ip = mtod(m, struct ip *);
248		ip->ip_tos = inp->inp_ip_tos;
249		ip->ip_off = 0;
250		ip->ip_p = inp->inp_ip_p;
251		ip->ip_len = m->m_pkthdr.len;
252		ip->ip_src = inp->inp_laddr;
253		ip->ip_dst.s_addr = dst;
254		ip->ip_ttl = inp->inp_ip_ttl;
255	} else {
256		if (m->m_pkthdr.len > IP_MAXPACKET) {
257			m_freem(m);
258			return(EMSGSIZE);
259		}
260		ip = mtod(m, struct ip *);
261		/* don't allow both user specified and setsockopt options,
262		   and don't allow packet length sizes that will crash */
263		if (((IP_VHL_HL(ip->ip_vhl) != (sizeof (*ip) >> 2))
264		     && inp->inp_options)
265		    || (ip->ip_len > m->m_pkthdr.len)
266		    || (ip->ip_len < (IP_VHL_HL(ip->ip_vhl) << 2))) {
267			m_freem(m);
268			return EINVAL;
269		}
270		if (ip->ip_id == 0)
271#ifdef RANDOM_IP_ID
272			ip->ip_id = ip_randomid();
273#else
274			ip->ip_id = htons(ip_id++);
275#endif
276		/* XXX prevent ip_output from overwriting header fields */
277		flags |= IP_RAWOUTPUT;
278		ipstat.ips_rawout++;
279	}
280
281#ifdef IPSEC
282	if (ipsec_setsocket(m, so) != 0) {
283		m_freem(m);
284		return ENOBUFS;
285	}
286#endif /*IPSEC*/
287
288	return (ip_output(m, inp->inp_options, &inp->inp_route, flags,
289			  inp->inp_moptions));
290}
291
292/*
293 * Raw IP socket option processing.
294 */
295int
296rip_ctloutput(so, sopt)
297	struct socket *so;
298	struct sockopt *sopt;
299{
300	struct	inpcb *inp = sotoinpcb(so);
301	int	error, optval;
302
303	if (sopt->sopt_level != IPPROTO_IP)
304		return (EINVAL);
305
306	error = 0;
307
308	switch (sopt->sopt_dir) {
309	case SOPT_GET:
310		switch (sopt->sopt_name) {
311		case IP_HDRINCL:
312			optval = inp->inp_flags & INP_HDRINCL;
313			error = sooptcopyout(sopt, &optval, sizeof optval);
314			break;
315
316		case IP_FW_ADD:	/* ADD actually returns the body... */
317		case IP_FW_GET:
318			if (IPFW_LOADED)
319				error = ip_fw_ctl_ptr(sopt);
320			else
321				error = ENOPROTOOPT;
322			break;
323
324		case IP_DUMMYNET_GET:
325			if (DUMMYNET_LOADED)
326				error = ip_dn_ctl_ptr(sopt);
327			else
328				error = ENOPROTOOPT;
329			break ;
330
331		case MRT_INIT:
332		case MRT_DONE:
333		case MRT_ADD_VIF:
334		case MRT_DEL_VIF:
335		case MRT_ADD_MFC:
336		case MRT_DEL_MFC:
337		case MRT_VERSION:
338		case MRT_ASSERT:
339			error = ip_mrouter_get(so, sopt);
340			break;
341
342		default:
343			error = ip_ctloutput(so, sopt);
344			break;
345		}
346		break;
347
348	case SOPT_SET:
349		switch (sopt->sopt_name) {
350		case IP_HDRINCL:
351			error = sooptcopyin(sopt, &optval, sizeof optval,
352					    sizeof optval);
353			if (error)
354				break;
355			if (optval)
356				inp->inp_flags |= INP_HDRINCL;
357			else
358				inp->inp_flags &= ~INP_HDRINCL;
359			break;
360
361		case IP_FW_ADD:
362		case IP_FW_DEL:
363		case IP_FW_FLUSH:
364		case IP_FW_ZERO:
365		case IP_FW_RESETLOG:
366			if (IPFW_LOADED)
367				error = ip_fw_ctl_ptr(sopt);
368			else
369				error = ENOPROTOOPT;
370			break;
371
372		case IP_DUMMYNET_CONFIGURE:
373		case IP_DUMMYNET_DEL:
374		case IP_DUMMYNET_FLUSH:
375			if (DUMMYNET_LOADED)
376				error = ip_dn_ctl_ptr(sopt);
377			else
378				error = ENOPROTOOPT ;
379			break ;
380
381		case IP_RSVP_ON:
382			error = ip_rsvp_init(so);
383			break;
384
385		case IP_RSVP_OFF:
386			error = ip_rsvp_done();
387			break;
388
389			/* XXX - should be combined */
390		case IP_RSVP_VIF_ON:
391			error = ip_rsvp_vif_init(so, sopt);
392			break;
393
394		case IP_RSVP_VIF_OFF:
395			error = ip_rsvp_vif_done(so, sopt);
396			break;
397
398		case MRT_INIT:
399		case MRT_DONE:
400		case MRT_ADD_VIF:
401		case MRT_DEL_VIF:
402		case MRT_ADD_MFC:
403		case MRT_DEL_MFC:
404		case MRT_VERSION:
405		case MRT_ASSERT:
406			error = ip_mrouter_set(so, sopt);
407			break;
408
409		default:
410			error = ip_ctloutput(so, sopt);
411			break;
412		}
413		break;
414	}
415
416	return (error);
417}
418
419/*
420 * This function exists solely to receive the PRC_IFDOWN messages which
421 * are sent by if_down().  It looks for an ifaddr whose ifa_addr is sa,
422 * and calls in_ifadown() to remove all routes corresponding to that address.
423 * It also receives the PRC_IFUP messages from if_up() and reinstalls the
424 * interface routes.
425 */
426void
427rip_ctlinput(cmd, sa, vip)
428	int cmd;
429	struct sockaddr *sa;
430	void *vip;
431{
432	struct in_ifaddr *ia;
433	struct ifnet *ifp;
434	int err;
435	int flags;
436
437	switch (cmd) {
438	case PRC_IFDOWN:
439		TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
440			if (ia->ia_ifa.ifa_addr == sa
441			    && (ia->ia_flags & IFA_ROUTE)) {
442				/*
443				 * in_ifscrub kills the interface route.
444				 */
445				in_ifscrub(ia->ia_ifp, ia);
446				/*
447				 * in_ifadown gets rid of all the rest of
448				 * the routes.  This is not quite the right
449				 * thing to do, but at least if we are running
450				 * a routing process they will come back.
451				 */
452				in_ifadown(&ia->ia_ifa, 0);
453				break;
454			}
455		}
456		break;
457
458	case PRC_IFUP:
459		TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
460			if (ia->ia_ifa.ifa_addr == sa)
461				break;
462		}
463		if (ia == 0 || (ia->ia_flags & IFA_ROUTE))
464			return;
465		flags = RTF_UP;
466		ifp = ia->ia_ifa.ifa_ifp;
467
468		if ((ifp->if_flags & IFF_LOOPBACK)
469		    || (ifp->if_flags & IFF_POINTOPOINT))
470			flags |= RTF_HOST;
471
472		err = rtinit(&ia->ia_ifa, RTM_ADD, flags);
473		if (err == 0)
474			ia->ia_flags |= IFA_ROUTE;
475		break;
476	}
477}
478
479u_long	rip_sendspace = RIPSNDQ;
480u_long	rip_recvspace = RIPRCVQ;
481
482SYSCTL_INT(_net_inet_raw, OID_AUTO, maxdgram, CTLFLAG_RW,
483    &rip_sendspace, 0, "Maximum outgoing raw IP datagram size");
484SYSCTL_INT(_net_inet_raw, OID_AUTO, recvspace, CTLFLAG_RW,
485    &rip_recvspace, 0, "Maximum incoming raw IP datagram size");
486
487static int
488rip_attach(struct socket *so, int proto, struct thread *td)
489{
490	struct inpcb *inp;
491	int error, s;
492
493	inp = sotoinpcb(so);
494	if (inp)
495		panic("rip_attach");
496	if (td && (error = suser(td)) != 0)
497		return error;
498
499	error = soreserve(so, rip_sendspace, rip_recvspace);
500	if (error)
501		return error;
502	s = splnet();
503	error = in_pcballoc(so, &ripcbinfo, td);
504	splx(s);
505	if (error)
506		return error;
507	inp = (struct inpcb *)so->so_pcb;
508	inp->inp_vflag |= INP_IPV4;
509	inp->inp_ip_p = proto;
510	inp->inp_ip_ttl = ip_defttl;
511	return 0;
512}
513
514static int
515rip_detach(struct socket *so)
516{
517	struct inpcb *inp;
518
519	inp = sotoinpcb(so);
520	if (inp == 0)
521		panic("rip_detach");
522	if (so == ip_mrouter)
523		ip_mrouter_done();
524	ip_rsvp_force_done(so);
525	if (so == ip_rsvpd)
526		ip_rsvp_done();
527	in_pcbdetach(inp);
528	return 0;
529}
530
531static int
532rip_abort(struct socket *so)
533{
534	SOCK_LOCK(so);
535	soisdisconnected(so);
536	SOCK_UNLOCK(so);
537	return rip_detach(so);
538}
539
540static int
541rip_disconnect(struct socket *so)
542{
543	SOCK_LOCK(so);
544	if ((so->so_state & SS_ISCONNECTED) == 0) {
545		SOCK_UNLOCK(so);
546		return ENOTCONN;
547	}
548	SOCK_UNLOCK(so);
549	return rip_abort(so);
550}
551
552static int
553rip_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
554{
555	struct inpcb *inp = sotoinpcb(so);
556	struct sockaddr_in *addr = (struct sockaddr_in *)nam;
557
558	if (nam->sa_len != sizeof(*addr))
559		return EINVAL;
560
561	if (TAILQ_EMPTY(&ifnet) || ((addr->sin_family != AF_INET) &&
562				    (addr->sin_family != AF_IMPLINK)) ||
563	    (addr->sin_addr.s_addr &&
564	     ifa_ifwithaddr((struct sockaddr *)addr) == 0))
565		return EADDRNOTAVAIL;
566	inp->inp_laddr = addr->sin_addr;
567	return 0;
568}
569
570static int
571rip_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
572{
573	struct inpcb *inp = sotoinpcb(so);
574	struct sockaddr_in *addr = (struct sockaddr_in *)nam;
575
576	if (nam->sa_len != sizeof(*addr))
577		return EINVAL;
578	if (TAILQ_EMPTY(&ifnet))
579		return EADDRNOTAVAIL;
580	if ((addr->sin_family != AF_INET) &&
581	    (addr->sin_family != AF_IMPLINK))
582		return EAFNOSUPPORT;
583	inp->inp_faddr = addr->sin_addr;
584	SOCK_LOCK(so);
585	soisconnected(so);
586	SOCK_UNLOCK(so);
587	return 0;
588}
589
590static int
591rip_shutdown(struct socket *so)
592{
593	socantsendmore(so);
594	return 0;
595}
596
597static int
598rip_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
599	 struct mbuf *control, struct thread *td)
600{
601	struct inpcb *inp = sotoinpcb(so);
602	register u_long dst;
603
604	SOCK_LOCK(so);
605	if (so->so_state & SS_ISCONNECTED) {
606		SOCK_UNLOCK(so);
607		if (nam) {
608			m_freem(m);
609			return EISCONN;
610		}
611		dst = inp->inp_faddr.s_addr;
612	} else {
613		SOCK_UNLOCK(so);
614		if (nam == NULL) {
615			m_freem(m);
616			return ENOTCONN;
617		}
618		dst = ((struct sockaddr_in *)nam)->sin_addr.s_addr;
619	}
620	return rip_output(m, so, dst);
621}
622
623static int
624rip_pcblist(SYSCTL_HANDLER_ARGS)
625{
626	int error, i, n, s;
627	struct inpcb *inp, **inp_list;
628	inp_gen_t gencnt;
629	struct xinpgen xig;
630
631	/*
632	 * The process of preparing the TCB list is too time-consuming and
633	 * resource-intensive to repeat twice on every request.
634	 */
635	if (req->oldptr == 0) {
636		n = ripcbinfo.ipi_count;
637		req->oldidx = 2 * (sizeof xig)
638			+ (n + n/8) * sizeof(struct xinpcb);
639		return 0;
640	}
641
642	if (req->newptr != 0)
643		return EPERM;
644
645	/*
646	 * OK, now we're committed to doing something.
647	 */
648	s = splnet();
649	gencnt = ripcbinfo.ipi_gencnt;
650	n = ripcbinfo.ipi_count;
651	splx(s);
652
653	xig.xig_len = sizeof xig;
654	xig.xig_count = n;
655	xig.xig_gen = gencnt;
656	xig.xig_sogen = so_gencnt;
657	error = SYSCTL_OUT(req, &xig, sizeof xig);
658	if (error)
659		return error;
660
661	inp_list = malloc(n * sizeof *inp_list, M_TEMP, M_WAITOK);
662	if (inp_list == 0)
663		return ENOMEM;
664
665	s = splnet();
666	for (inp = LIST_FIRST(ripcbinfo.listhead), i = 0; inp && i < n;
667	     inp = LIST_NEXT(inp, inp_list)) {
668		if (inp->inp_gencnt <= gencnt) {
669			if (cr_canseesocket(req->td->td_ucred,
670			    inp->inp_socket))
671				continue;
672			inp_list[i++] = inp;
673		}
674	}
675	splx(s);
676	n = i;
677
678	error = 0;
679	for (i = 0; i < n; i++) {
680		inp = inp_list[i];
681		if (inp->inp_gencnt <= gencnt) {
682			struct xinpcb xi;
683			xi.xi_len = sizeof xi;
684			/* XXX should avoid extra copy */
685			bcopy(inp, &xi.xi_inp, sizeof *inp);
686			if (inp->inp_socket)
687				sotoxsocket(inp->inp_socket, &xi.xi_socket);
688			error = SYSCTL_OUT(req, &xi, sizeof xi);
689		}
690	}
691	if (!error) {
692		/*
693		 * Give the user an updated idea of our state.
694		 * If the generation differs from what we told
695		 * her before, she knows that something happened
696		 * while we were processing this request, and it
697		 * might be necessary to retry.
698		 */
699		s = splnet();
700		xig.xig_gen = ripcbinfo.ipi_gencnt;
701		xig.xig_sogen = so_gencnt;
702		xig.xig_count = ripcbinfo.ipi_count;
703		splx(s);
704		error = SYSCTL_OUT(req, &xig, sizeof xig);
705	}
706	free(inp_list, M_TEMP);
707	return error;
708}
709
710SYSCTL_PROC(_net_inet_raw, OID_AUTO/*XXX*/, pcblist, CTLFLAG_RD, 0, 0,
711	    rip_pcblist, "S,xinpcb", "List of active raw IP sockets");
712
713struct pr_usrreqs rip_usrreqs = {
714	rip_abort, pru_accept_notsupp, rip_attach, rip_bind, rip_connect,
715	pru_connect2_notsupp, in_control, rip_detach, rip_disconnect,
716	pru_listen_notsupp, in_setpeeraddr, pru_rcvd_notsupp,
717	pru_rcvoob_notsupp, rip_send, pru_sense_null, rip_shutdown,
718	in_setsockaddr, sosend, soreceive, sopoll
719};
720