1 /*-
2 * Copyright (c) 1984, 1985, 1986, 1987, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 2004-2006 Robert N. M. Watson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 4. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * Copyright (c) 1995, Mike Mitchell
32 * 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 * @(#)ipx_usrreq.c
63 */
64
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD: src/sys/netipx/ipx_usrreq.c,v 1.64 2008/07/25 23:54:07 trhodes Exp $");
67
68 #include "opt_ipx.h"
69
70 #include <sys/param.h>
71 #include <sys/kernel.h>
72 #include <sys/lock.h>
73 #include <sys/mbuf.h>
74 #include <sys/priv.h>
75 #include <sys/protosw.h>
76 #include <sys/signalvar.h>
77 #include <sys/socket.h>
78 #include <sys/socketvar.h>
79 #include <sys/sx.h>
80 #include <sys/sysctl.h>
81 #include <sys/systm.h>
82
83 #include <net/if.h>
84 #include <net/route.h>
85
86 #include <netinet/in.h>
87
88 #include <netipx/ipx.h>
89 #include <netipx/ipx_if.h>
90 #include <netipx/ipx_pcb.h>
91 #include <netipx/ipx_var.h>
92
93 /*
94 * IPX protocol implementation.
95 */
96
97 static int ipxsendspace = IPXSNDQ;
98 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxsendspace, CTLFLAG_RW,
99 &ipxsendspace, 0, "Send buffer space");
100 static int ipxrecvspace = IPXRCVQ;
101 SYSCTL_INT(_net_ipx_ipx, OID_AUTO, ipxrecvspace, CTLFLAG_RW,
102 &ipxrecvspace, 0, "Receive buffer space");
103
104 static void ipx_usr_abort(struct socket *so);
105 static int ipx_attach(struct socket *so, int proto, struct thread *td);
106 static int ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td);
107 static int ipx_connect(struct socket *so, struct sockaddr *nam,
108 struct thread *td);
109 static void ipx_detach(struct socket *so);
110 static int ipx_disconnect(struct socket *so);
111 static int ipx_send(struct socket *so, int flags, struct mbuf *m,
112 struct sockaddr *addr, struct mbuf *control,
113 struct thread *td);
114 static int ipx_shutdown(struct socket *so);
115 static int ripx_attach(struct socket *so, int proto, struct thread *td);
116 static int ipx_output(struct ipxpcb *ipxp, struct mbuf *m0);
117 static void ipx_usr_close(struct socket *so);
118
119 struct pr_usrreqs ipx_usrreqs = {
120 .pru_abort = ipx_usr_abort,
121 .pru_attach = ipx_attach,
122 .pru_bind = ipx_bind,
123 .pru_connect = ipx_connect,
124 .pru_control = ipx_control,
125 .pru_detach = ipx_detach,
126 .pru_disconnect = ipx_disconnect,
127 .pru_peeraddr = ipx_peeraddr,
128 .pru_send = ipx_send,
129 .pru_shutdown = ipx_shutdown,
130 .pru_sockaddr = ipx_sockaddr,
131 .pru_close = ipx_usr_close,
132 };
133
134 struct pr_usrreqs ripx_usrreqs = {
135 .pru_abort = ipx_usr_abort,
136 .pru_attach = ripx_attach,
137 .pru_bind = ipx_bind,
138 .pru_connect = ipx_connect,
139 .pru_control = ipx_control,
140 .pru_detach = ipx_detach,
141 .pru_disconnect = ipx_disconnect,
142 .pru_peeraddr = ipx_peeraddr,
143 .pru_send = ipx_send,
144 .pru_shutdown = ipx_shutdown,
145 .pru_sockaddr = ipx_sockaddr,
146 .pru_close = ipx_usr_close,
147 };
148
149 /*
150 * This may also be called for raw listeners.
151 */
152 void
153 ipx_input(struct mbuf *m, struct ipxpcb *ipxp)
154 {
155 struct ipx *ipx = mtod(m, struct ipx *);
156 struct ifnet *ifp = m->m_pkthdr.rcvif;
157 struct sockaddr_ipx ipx_ipx;
158
159 KASSERT(ipxp != NULL, ("ipx_input: NULL ipxpcb"));
160 IPX_LOCK_ASSERT(ipxp);
161 /*
162 * Construct sockaddr format source address.
163 * Stuff source address and datagram in user buffer.
164 */
165 ipx_ipx.sipx_len = sizeof(ipx_ipx);
166 ipx_ipx.sipx_family = AF_IPX;
167 ipx_ipx.sipx_addr = ipx->ipx_sna;
168 ipx_ipx.sipx_zero[0] = '\0';
169 ipx_ipx.sipx_zero[1] = '\0';
170 if (ipx_neteqnn(ipx->ipx_sna.x_net, ipx_zeronet) && ifp != NULL) {
171 struct ifaddr *ifa;
172
173 for (ifa = TAILQ_FIRST(&ifp->if_addrhead); ifa != NULL;
174 ifa = TAILQ_NEXT(ifa, ifa_link)) {
175 if (ifa->ifa_addr->sa_family == AF_IPX) {
176 ipx_ipx.sipx_addr.x_net =
177 IA_SIPX(ifa)->sipx_addr.x_net;
178 break;
179 }
180 }
181 }
182 ipxp->ipxp_rpt = ipx->ipx_pt;
183 if ((ipxp->ipxp_flags & IPXP_RAWIN) == 0) {
184 m->m_len -= sizeof(struct ipx);
185 m->m_pkthdr.len -= sizeof(struct ipx);
186 m->m_data += sizeof(struct ipx);
187 }
188 if (sbappendaddr(&ipxp->ipxp_socket->so_rcv,
189 (struct sockaddr *)&ipx_ipx, m, NULL) == 0)
190 m_freem(m);
191 else
192 sorwakeup(ipxp->ipxp_socket);
193 }
194
195 /*
196 * Drop connection, reporting
197 * the specified error.
198 */
199 void
200 ipx_drop(struct ipxpcb *ipxp, int errno)
201 {
202 struct socket *so = ipxp->ipxp_socket;
203
204 IPX_LIST_LOCK_ASSERT();
205 IPX_LOCK_ASSERT(ipxp);
206
207 /*
208 * someday, in the IPX world
209 * we will generate error protocol packets
210 * announcing that the socket has gone away.
211 *
212 * XXX Probably never. IPX does not have error packets.
213 */
214 /*if (TCPS_HAVERCVDSYN(tp->t_state)) {
215 tp->t_state = TCPS_CLOSED;
216 tcp_output(tp);
217 }*/
218 so->so_error = errno;
219 ipx_pcbdisconnect(ipxp);
220 soisdisconnected(so);
221 }
222
223 static int
224 ipx_output(struct ipxpcb *ipxp, struct mbuf *m0)
225 {
226 struct ipx *ipx;
227 struct socket *so;
228 int len = 0;
229 struct route *ro;
230 struct mbuf *m;
231 struct mbuf *mprev = NULL;
232
233 IPX_LOCK_ASSERT(ipxp);
234
235 /*
236 * Calculate data length.
237 */
238 for (m = m0; m != NULL; m = m->m_next) {
239 mprev = m;
240 len += m->m_len;
241 }
242 /*
243 * Make sure packet is actually of even length.
244 */
245
246 if (len & 1) {
247 m = mprev;
248 if ((m->m_flags & M_EXT) == 0 &&
249 (m->m_len + m->m_data < &m->m_dat[MLEN])) {
250 mtod(m, char*)[m->m_len++] = 0;
251 } else {
252 struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA);
253
254 if (m1 == NULL) {
255 m_freem(m0);
256 return (ENOBUFS);
257 }
258 m1->m_len = 1;
259 * mtod(m1, char *) = 0;
260 m->m_next = m1;
261 }
262 m0->m_pkthdr.len++;
263 }
264
265 /*
266 * Fill in mbuf with extended IPX header
267 * and addresses and length put into network format.
268 */
269 m = m0;
270 if (ipxp->ipxp_flags & IPXP_RAWOUT) {
271 ipx = mtod(m, struct ipx *);
272 } else {
273 M_PREPEND(m, sizeof(struct ipx), M_DONTWAIT);
274 if (m == NULL)
275 return (ENOBUFS);
276 ipx = mtod(m, struct ipx *);
277 ipx->ipx_tc = 0;
278 ipx->ipx_pt = ipxp->ipxp_dpt;
279 ipx->ipx_sna = ipxp->ipxp_laddr;
280 ipx->ipx_dna = ipxp->ipxp_faddr;
281 len += sizeof(struct ipx);
282 }
283
284 ipx->ipx_len = htons((u_short)len);
285
286 if (ipxp->ipxp_flags & IPXP_CHECKSUM) {
287 ipx->ipx_sum = ipx_cksum(m, len);
288 } else
289 ipx->ipx_sum = 0xffff;
290
291 /*
292 * Output datagram.
293 */
294 so = ipxp->ipxp_socket;
295 if (so->so_options & SO_DONTROUTE)
296 return (ipx_outputfl(m, (struct route *)NULL,
297 (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF));
298 /*
299 * Use cached route for previous datagram if
300 * possible. If the previous net was the same
301 * and the interface was a broadcast medium, or
302 * if the previous destination was identical,
303 * then we are ok.
304 *
305 * NB: We don't handle broadcasts because that
306 * would require 3 subroutine calls.
307 */
308 ro = &ipxp->ipxp_route;
309 #ifdef ancient_history
310 /*
311 * I think that this will all be handled in ipx_pcbconnect!
312 */
313 if (ro->ro_rt != NULL) {
314 if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) {
315 /*
316 * This assumes we have no GH type routes
317 */
318 if (ro->ro_rt->rt_flags & RTF_HOST) {
319 if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna))
320 goto re_route;
321
322 }
323 if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) {
324 struct ipx_addr *dst =
325 &satoipx_addr(ro->ro_dst);
326 dst->x_host = ipx->ipx_dna.x_host;
327 }
328 /*
329 * Otherwise, we go through the same gateway
330 * and dst is already set up.
331 */
332 } else {
333 re_route:
334 RTFREE(ro->ro_rt);
335 ro->ro_rt = NULL;
336 }
337 }
338 ipxp->ipxp_lastdst = ipx->ipx_dna;
339 #endif /* ancient_history */
340 return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST));
341 }
342
343 int
344 ipx_ctloutput(struct socket *so, struct sockopt *sopt)
345 {
346 struct ipxpcb *ipxp = sotoipxpcb(so);
347 int mask, error, optval;
348 short soptval;
349 struct ipx ioptval;
350 long seq;
351
352 KASSERT(ipxp != NULL, ("ipx_ctloutput: ipxp == NULL"));
353 error = 0;
354
355 switch (sopt->sopt_dir) {
356 case SOPT_GET:
357 switch (sopt->sopt_name) {
358 case SO_ALL_PACKETS:
359 mask = IPXP_ALL_PACKETS;
360 goto get_flags;
361
362 case SO_HEADERS_ON_INPUT:
363 mask = IPXP_RAWIN;
364 goto get_flags;
365
366 case SO_IPX_CHECKSUM:
367 mask = IPXP_CHECKSUM;
368 goto get_flags;
369
370 case SO_HEADERS_ON_OUTPUT:
371 mask = IPXP_RAWOUT;
372 get_flags:
373 /* Unlocked read. */
374 soptval = ipxp->ipxp_flags & mask;
375 error = sooptcopyout(sopt, &soptval, sizeof soptval);
376 break;
377
378 case SO_DEFAULT_HEADERS:
379 ioptval.ipx_len = 0;
380 ioptval.ipx_sum = 0;
381 ioptval.ipx_tc = 0;
382 IPX_LOCK(ipxp);
383 ioptval.ipx_pt = ipxp->ipxp_dpt;
384 ioptval.ipx_dna = ipxp->ipxp_faddr;
385 ioptval.ipx_sna = ipxp->ipxp_laddr;
386 IPX_UNLOCK(ipxp);
387 error = sooptcopyout(sopt, &soptval, sizeof soptval);
388 break;
389
390 case SO_SEQNO:
391 IPX_LIST_LOCK();
392 seq = ipx_pexseq;
393 ipx_pexseq++;
394 IPX_LIST_UNLOCK();
395 error = sooptcopyout(sopt, &seq, sizeof seq);
396 break;
397
398 default:
399 error = EINVAL;
400 }
401 break;
402
403 case SOPT_SET:
404 switch (sopt->sopt_name) {
405 case SO_ALL_PACKETS:
406 mask = IPXP_ALL_PACKETS;
407 goto set_head;
408
409 case SO_HEADERS_ON_INPUT:
410 mask = IPXP_RAWIN;
411 goto set_head;
412
413 case SO_IPX_CHECKSUM:
414 mask = IPXP_CHECKSUM;
415
416 case SO_HEADERS_ON_OUTPUT:
417 mask = IPXP_RAWOUT;
418 set_head:
419 error = sooptcopyin(sopt, &optval, sizeof optval,
420 sizeof optval);
421 if (error)
422 break;
423 IPX_LOCK(ipxp);
424 if (optval)
425 ipxp->ipxp_flags |= mask;
426 else
427 ipxp->ipxp_flags &= ~mask;
428 IPX_UNLOCK(ipxp);
429 break;
430
431 case SO_DEFAULT_HEADERS:
432 error = sooptcopyin(sopt, &ioptval, sizeof ioptval,
433 sizeof ioptval);
434 if (error)
435 break;
436 /* Unlocked write. */
437 ipxp->ipxp_dpt = ioptval.ipx_pt;
438 break;
439 default:
440 error = EINVAL;
441 }
442 break;
443 }
444 return (error);
445 }
446
447 static void
448 ipx_usr_abort(struct socket *so)
449 {
450
451 /* XXXRW: Possibly ipx_disconnect() here? */
452 soisdisconnected(so);
453 }
454
455 static int
456 ipx_attach(struct socket *so, int proto, struct thread *td)
457 {
458 #ifdef INVARIANTS
459 struct ipxpcb *ipxp = sotoipxpcb(so);
460 #endif
461 int error;
462
463 KASSERT(ipxp == NULL, ("ipx_attach: ipxp != NULL"));
464 error = soreserve(so, ipxsendspace, ipxrecvspace);
465 if (error != 0)
466 return (error);
467 IPX_LIST_LOCK();
468 error = ipx_pcballoc(so, &ipxpcb_list, td);
469 IPX_LIST_UNLOCK();
470 return (error);
471 }
472
473 static int
474 ipx_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
475 {
476 struct ipxpcb *ipxp = sotoipxpcb(so);
477 int error;
478
479 KASSERT(ipxp != NULL, ("ipx_bind: ipxp == NULL"));
480 IPX_LIST_LOCK();
481 IPX_LOCK(ipxp);
482 error = ipx_pcbbind(ipxp, nam, td);
483 IPX_UNLOCK(ipxp);
484 IPX_LIST_UNLOCK();
485 return (error);
486 }
487
488 static void
489 ipx_usr_close(struct socket *so)
490 {
491
492 /* XXXRW: Possibly ipx_disconnect() here? */
493 soisdisconnected(so);
494 }
495
496 static int
497 ipx_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
498 {
499 struct ipxpcb *ipxp = sotoipxpcb(so);
500 int error;
501
502 KASSERT(ipxp != NULL, ("ipx_connect: ipxp == NULL"));
503 IPX_LIST_LOCK();
504 IPX_LOCK(ipxp);
505 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
506 error = EISCONN;
507 goto out;
508 }
509 error = ipx_pcbconnect(ipxp, nam, td);
510 if (error == 0)
511 soisconnected(so);
512 out:
513 IPX_UNLOCK(ipxp);
514 IPX_LIST_UNLOCK();
515 return (error);
516 }
517
518 static void
519 ipx_detach(struct socket *so)
520 {
521 struct ipxpcb *ipxp = sotoipxpcb(so);
522
523 /* XXXRW: Should assert detached. */
524 KASSERT(ipxp != NULL, ("ipx_detach: ipxp == NULL"));
525 IPX_LIST_LOCK();
526 IPX_LOCK(ipxp);
527 ipx_pcbdetach(ipxp);
528 ipx_pcbfree(ipxp);
529 IPX_LIST_UNLOCK();
530 }
531
532 static int
533 ipx_disconnect(struct socket *so)
534 {
535 struct ipxpcb *ipxp = sotoipxpcb(so);
536 int error;
537
538 KASSERT(ipxp != NULL, ("ipx_disconnect: ipxp == NULL"));
539 IPX_LIST_LOCK();
540 IPX_LOCK(ipxp);
541 error = 0;
542 if (ipx_nullhost(ipxp->ipxp_faddr)) {
543 error = ENOTCONN;
544 goto out;
545 }
546 ipx_pcbdisconnect(ipxp);
547 soisdisconnected(so);
548 out:
549 IPX_UNLOCK(ipxp);
550 IPX_LIST_UNLOCK();
551 return (0);
552 }
553
554 int
555 ipx_peeraddr(struct socket *so, struct sockaddr **nam)
556 {
557 struct ipxpcb *ipxp = sotoipxpcb(so);
558
559 KASSERT(ipxp != NULL, ("ipx_peeraddr: ipxp == NULL"));
560 ipx_getpeeraddr(ipxp, nam);
561 return (0);
562 }
563
564 static int
565 ipx_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
566 struct mbuf *control, struct thread *td)
567 {
568 int error;
569 struct ipxpcb *ipxp = sotoipxpcb(so);
570 struct ipx_addr laddr;
571
572 KASSERT(ipxp != NULL, ("ipxp_send: ipxp == NULL"));
573 /*
574 * Attempt to only acquire the necessary locks: if the socket is
575 * already connected, we don't need to hold the IPX list lock to be
576 * used by ipx_pcbconnect() and ipx_pcbdisconnect(), just the IPX
577 * pcb lock.
578 */
579 if (nam != NULL) {
580 IPX_LIST_LOCK();
581 IPX_LOCK(ipxp);
582 laddr = ipxp->ipxp_laddr;
583 if (!ipx_nullhost(ipxp->ipxp_faddr)) {
584 IPX_UNLOCK(ipxp);
585 IPX_LIST_UNLOCK();
586 error = EISCONN;
587 goto send_release;
588 }
589 /*
590 * Must block input while temporarily connected.
591 */
592 error = ipx_pcbconnect(ipxp, nam, td);
593 if (error) {
594 IPX_UNLOCK(ipxp);
595 IPX_LIST_UNLOCK();
596 goto send_release;
597 }
598 } else {
599 IPX_LOCK(ipxp);
600 if (ipx_nullhost(ipxp->ipxp_faddr)) {
601 IPX_UNLOCK(ipxp);
602 error = ENOTCONN;
603 goto send_release;
604 }
605 }
606 error = ipx_output(ipxp, m);
607 m = NULL;
608 if (nam != NULL) {
609 ipx_pcbdisconnect(ipxp);
610 ipxp->ipxp_laddr = laddr;
611 IPX_UNLOCK(ipxp);
612 IPX_LIST_UNLOCK();
613 } else
614 IPX_UNLOCK(ipxp);
615
616 send_release:
617 if (m != NULL)
618 m_freem(m);
619 return (error);
620 }
621
622 static int
623 ipx_shutdown(so)
624 struct socket *so;
625 {
626
627 KASSERT(so->so_pcb != NULL, ("ipx_shutdown: so_pcb == NULL"));
628 socantsendmore(so);
629 return (0);
630 }
631
632 int
633 ipx_sockaddr(struct socket *so, struct sockaddr **nam)
634 {
635 struct ipxpcb *ipxp = sotoipxpcb(so);
636
637 KASSERT(ipxp != NULL, ("ipx_sockaddr: ipxp == NULL"));
638 ipx_getsockaddr(ipxp, nam);
639 return (0);
640 }
641
642 static int
643 ripx_attach(struct socket *so, int proto, struct thread *td)
644 {
645 int error = 0;
646 struct ipxpcb *ipxp = sotoipxpcb(so);
647
648 KASSERT(ipxp == NULL, ("ripx_attach: ipxp != NULL"));
649
650 if (td != NULL) {
651 error = priv_check(td, PRIV_NETIPX_RAW);
652 if (error)
653 return (error);
654 }
655
656 /*
657 * We hold the IPX list lock for the duration as address parameters
658 * of the IPX pcb are changed. Since no one else holds a reference
659 * to the ipxpcb yet, we don't need the ipxpcb lock here.
660 */
661 IPX_LIST_LOCK();
662 error = ipx_pcballoc(so, &ipxrawpcb_list, td);
663 if (error)
664 goto out;
665 ipxp = sotoipxpcb(so);
666 error = soreserve(so, ipxsendspace, ipxrecvspace);
667 if (error)
668 goto out;
669 ipxp->ipxp_faddr.x_host = ipx_broadhost;
670 ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT;
671 out:
672 IPX_LIST_UNLOCK();
673 return (error);
674 }
675
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