1 /*-
2 * Copyright (c) 2000-2001 Boris Popov
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 Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD: releng/5.4/sys/netsmb/smb_trantcp.c 141090 2005-01-31 23:27:04Z imp $");
35
36 #include <sys/param.h>
37 #include <sys/condvar.h>
38 #include <sys/kernel.h>
39 #include <sys/lock.h>
40 #include <sys/malloc.h>
41 #include <sys/mbuf.h>
42 #include <sys/poll.h>
43 #include <sys/proc.h>
44 #include <sys/protosw.h>
45 #include <sys/signalvar.h>
46 #include <sys/socket.h>
47 #include <sys/socketvar.h>
48 #include <sys/sx.h>
49 #include <sys/sysctl.h>
50 #include <sys/systm.h>
51 #include <sys/uio.h>
52
53 #include <net/if.h>
54 #include <net/route.h>
55
56 #include <netinet/in.h>
57 #include <netinet/tcp.h>
58
59 #include <sys/mchain.h>
60
61 #include <netsmb/netbios.h>
62
63 #include <netsmb/smb.h>
64 #include <netsmb/smb_conn.h>
65 #include <netsmb/smb_tran.h>
66 #include <netsmb/smb_trantcp.h>
67 #include <netsmb/smb_subr.h>
68
69 #define M_NBDATA M_PCB
70
71 static int smb_tcpsndbuf = NB_SNDQ - 1;
72 static int smb_tcprcvbuf = NB_RCVQ - 1;
73
74 SYSCTL_DECL(_net_smb);
75 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
76 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
77
78 #define nb_sosend(so,m,flags,td) (so)->so_proto->pr_usrreqs->pru_sosend( \
79 so, NULL, 0, m, 0, flags, td)
80
81 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
82 u_int8_t *rpcodep, struct thread *td);
83 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
84
85 static int
86 nb_setsockopt_int(struct socket *so, int level, int name, int val)
87 {
88 struct sockopt sopt;
89
90 bzero(&sopt, sizeof(sopt));
91 sopt.sopt_level = level;
92 sopt.sopt_name = name;
93 sopt.sopt_val = &val;
94 sopt.sopt_valsize = sizeof(val);
95 return sosetopt(so, &sopt);
96 }
97
98 static __inline int
99 nb_poll(struct nbpcb *nbp, int events, struct thread *td)
100 {
101 return nbp->nbp_tso->so_proto->pr_usrreqs->pru_sopoll(nbp->nbp_tso,
102 events, NULL, td);
103 }
104
105 static int
106 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events,
107 struct thread *td)
108 {
109 struct timeval atv, rtv, ttv;
110 int ncoll, timo, error;
111
112 if (tv) {
113 atv = *tv;
114 if (itimerfix(&atv)) {
115 error = EINVAL;
116 goto done_noproclock;
117 }
118 getmicrouptime(&rtv);
119 timevaladd(&atv, &rtv);
120 }
121 timo = 0;
122 mtx_lock(&sellock);
123 retry:
124
125 ncoll = nselcoll;
126 mtx_lock_spin(&sched_lock);
127 td->td_flags |= TDF_SELECT;
128 mtx_unlock_spin(&sched_lock);
129 mtx_unlock(&sellock);
130
131 /* XXX: Should be done when the thread is initialized. */
132 TAILQ_INIT(&td->td_selq);
133 error = nb_poll(nbp, events, td);
134 mtx_lock(&sellock);
135 if (error) {
136 error = 0;
137 goto done;
138 }
139 if (tv) {
140 getmicrouptime(&rtv);
141 if (timevalcmp(&rtv, &atv, >=))
142 goto done;
143 ttv = atv;
144 timevalsub(&ttv, &rtv);
145 timo = tvtohz(&ttv);
146 }
147 /*
148 * An event of our interest may occur during locking a process.
149 * In order to avoid missing the event that occurred during locking
150 * the process, test P_SELECT and rescan file descriptors if
151 * necessary.
152 */
153 mtx_lock_spin(&sched_lock);
154 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) {
155 mtx_unlock_spin(&sched_lock);
156 goto retry;
157 }
158 mtx_unlock_spin(&sched_lock);
159
160 if (timo > 0)
161 error = cv_timedwait(&selwait, &sellock, timo);
162 else {
163 cv_wait(&selwait, &sellock);
164 error = 0;
165 }
166
167 done:
168 clear_selinfo_list(td);
169
170 mtx_lock_spin(&sched_lock);
171 td->td_flags &= ~TDF_SELECT;
172 mtx_unlock_spin(&sched_lock);
173 mtx_unlock(&sellock);
174
175 done_noproclock:
176 if (error == ERESTART)
177 return 0;
178 return error;
179 }
180
181 static int
182 nb_intr(struct nbpcb *nbp, struct proc *p)
183 {
184 return 0;
185 }
186
187 static void
188 nb_upcall(struct socket *so, void *arg, int waitflag)
189 {
190 struct nbpcb *nbp = arg;
191
192 if (arg == NULL || nbp->nbp_selectid == NULL)
193 return;
194 wakeup(nbp->nbp_selectid);
195 }
196
197 static int
198 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
199 {
200 u_int32_t *p = mtod(m, u_int32_t *);
201
202 *p = htonl((len & 0x1FFFF) | (type << 24));
203 return 0;
204 }
205
206 static int
207 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
208 {
209 int error;
210 u_char seglen, *cp;
211
212 cp = snb->snb_name;
213 if (*cp == 0)
214 return EINVAL;
215 NBDEBUG("[%s]\n", cp);
216 for (;;) {
217 seglen = (*cp) + 1;
218 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
219 if (error)
220 return error;
221 if (seglen == 1)
222 break;
223 cp += seglen;
224 }
225 return 0;
226 }
227
228 static int
229 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
230 {
231 struct socket *so;
232 int error, s;
233
234 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
235 td->td_ucred, td);
236 if (error)
237 return error;
238 nbp->nbp_tso = so;
239 so->so_upcallarg = (caddr_t)nbp;
240 so->so_upcall = nb_upcall;
241 SOCKBUF_LOCK(&so->so_rcv);
242 so->so_rcv.sb_flags |= SB_UPCALL;
243 SOCKBUF_UNLOCK(&so->so_rcv);
244 so->so_rcv.sb_timeo = (5 * hz);
245 so->so_snd.sb_timeo = (5 * hz);
246 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
247 if (error)
248 goto bad;
249 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
250 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
251 SOCKBUF_LOCK(&so->so_rcv);
252 so->so_rcv.sb_flags &= ~SB_NOINTR;
253 SOCKBUF_UNLOCK(&so->so_rcv);
254 SOCKBUF_LOCK(&so->so_snd);
255 so->so_snd.sb_flags &= ~SB_NOINTR;
256 SOCKBUF_UNLOCK(&so->so_snd);
257 error = soconnect(so, (struct sockaddr*)to, td);
258 if (error)
259 goto bad;
260 s = splnet();
261 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
262 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
263 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
264 (error = nb_intr(nbp, td->td_proc)) != 0) {
265 so->so_state &= ~SS_ISCONNECTING;
266 splx(s);
267 goto bad;
268 }
269 }
270 if (so->so_error) {
271 error = so->so_error;
272 so->so_error = 0;
273 splx(s);
274 goto bad;
275 }
276 splx(s);
277 return 0;
278 bad:
279 smb_nbst_disconnect(nbp->nbp_vc, td);
280 return error;
281 }
282
283 static int
284 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
285 {
286 struct mbchain mb, *mbp = &mb;
287 struct mdchain md, *mdp = &md;
288 struct mbuf *m0;
289 struct timeval tv;
290 struct sockaddr_in sin;
291 u_short port;
292 u_int8_t rpcode;
293 int error, rplen;
294
295 error = mb_init(mbp);
296 if (error)
297 return error;
298 mb_put_uint32le(mbp, 0);
299 nb_put_name(mbp, nbp->nbp_paddr);
300 nb_put_name(mbp, nbp->nbp_laddr);
301 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
302 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
303 if (!error) {
304 nbp->nbp_state = NBST_RQSENT;
305 }
306 mb_detach(mbp);
307 mb_done(mbp);
308 if (error)
309 return error;
310 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
311 error = nbssn_rselect(nbp, &tv, POLLIN, td);
312 if (error == EWOULDBLOCK) { /* Timeout */
313 NBDEBUG("initial request timeout\n");
314 return ETIMEDOUT;
315 }
316 if (error) /* restart or interrupt */
317 return error;
318 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
319 if (error) {
320 NBDEBUG("recv() error %d\n", error);
321 return error;
322 }
323 /*
324 * Process NETBIOS reply
325 */
326 if (m0)
327 md_initm(mdp, m0);
328 error = 0;
329 do {
330 if (rpcode == NB_SSN_POSRESP) {
331 nbp->nbp_state = NBST_SESSION;
332 nbp->nbp_flags |= NBF_CONNECTED;
333 break;
334 }
335 if (rpcode != NB_SSN_RTGRESP) {
336 error = ECONNABORTED;
337 break;
338 }
339 if (rplen != 6) {
340 error = ECONNABORTED;
341 break;
342 }
343 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
344 md_get_uint16(mdp, &port);
345 sin.sin_port = port;
346 nbp->nbp_state = NBST_RETARGET;
347 smb_nbst_disconnect(nbp->nbp_vc, td);
348 error = nb_connect_in(nbp, &sin, td);
349 if (!error)
350 error = nbssn_rq_request(nbp, td);
351 if (error) {
352 smb_nbst_disconnect(nbp->nbp_vc, td);
353 break;
354 }
355 } while(0);
356 if (m0)
357 md_done(mdp);
358 return error;
359 }
360
361 static int
362 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
363 u_int8_t *rpcodep, int flags, struct thread *td)
364 {
365 struct socket *so = nbp->nbp_tso;
366 struct uio auio;
367 struct iovec aio;
368 u_int32_t len;
369 int error;
370
371 aio.iov_base = (caddr_t)&len;
372 aio.iov_len = sizeof(len);
373 auio.uio_iov = &aio;
374 auio.uio_iovcnt = 1;
375 auio.uio_segflg = UIO_SYSSPACE;
376 auio.uio_rw = UIO_READ;
377 auio.uio_offset = 0;
378 auio.uio_resid = sizeof(len);
379 auio.uio_td = td;
380 error = so->so_proto->pr_usrreqs->pru_soreceive
381 (so, (struct sockaddr **)NULL, &auio,
382 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
383 if (error)
384 return error;
385 if (auio.uio_resid > 0) {
386 SMBSDEBUG("short reply\n");
387 return EPIPE;
388 }
389 len = ntohl(len);
390 *rpcodep = (len >> 24) & 0xFF;
391 len &= 0x1ffff;
392 if (len > SMB_MAXPKTLEN) {
393 SMBERROR("packet too long (%d)\n", len);
394 return EFBIG;
395 }
396 *lenp = len;
397 return 0;
398 }
399
400 static int
401 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
402 u_int8_t *rpcodep, struct thread *td)
403 {
404 struct socket *so = nbp->nbp_tso;
405 struct uio auio;
406 struct mbuf *m, *tm, *im;
407 u_int8_t rpcode;
408 int len, resid;
409 int error, rcvflg;
410
411 if (so == NULL)
412 return ENOTCONN;
413
414 if (mpp)
415 *mpp = NULL;
416 m = NULL;
417 for(;;) {
418 /*
419 * Poll for a response header.
420 * If we don't have one waiting, return.
421 */
422 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
423 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) ||
424 (so->so_rcv.sb_state & SBS_CANTRCVMORE)) {
425 nbp->nbp_state = NBST_CLOSED;
426 NBDEBUG("session closed by peer\n");
427 return ECONNRESET;
428 }
429 if (error)
430 return error;
431 if (len == 0 && nbp->nbp_state != NBST_SESSION)
432 break;
433 /* no data, try again */
434 if (rpcode == NB_SSN_KEEPALIVE)
435 continue;
436
437 /*
438 * Loop, blocking, for data following the response header.
439 *
440 * Note that we can't simply block here with MSG_WAITALL for the
441 * entire response size, as it may be larger than the TCP
442 * slow-start window that the sender employs. This will result
443 * in the sender stalling until the delayed ACK is sent, then
444 * resuming slow-start, resulting in very poor performance.
445 *
446 * Instead, we never request more than NB_SORECEIVE_CHUNK
447 * bytes at a time, resulting in an ack being pushed by
448 * the TCP code at the completion of each call.
449 */
450 resid = len;
451 while (resid > 0) {
452 tm = NULL;
453 rcvflg = MSG_WAITALL;
454 bzero(&auio, sizeof(auio));
455 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
456 auio.uio_td = td;
457 resid -= auio.uio_resid;
458 /*
459 * Spin until we have collected everything in
460 * this chunk.
461 */
462 do {
463 rcvflg = MSG_WAITALL;
464 error = so->so_proto->pr_usrreqs->pru_soreceive
465 (so, (struct sockaddr **)NULL,
466 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
467 } while (error == EWOULDBLOCK || error == EINTR ||
468 error == ERESTART);
469 if (error)
470 goto out;
471 /* short return guarantees unhappiness */
472 if (auio.uio_resid > 0) {
473 SMBERROR("packet is shorter than expected\n");
474 error = EPIPE;
475 goto out;
476 }
477 /* append received chunk to previous chunk(s) */
478 if (m == NULL) {
479 m = tm;
480 } else {
481 /*
482 * Just glue the new chain on the end.
483 * Consumer will pullup as required.
484 */
485 for (im = m; im->m_next != NULL; im = im->m_next)
486 ;
487 im->m_next = tm;
488 }
489 }
490 /* got a session/message packet? */
491 if (nbp->nbp_state == NBST_SESSION &&
492 rpcode == NB_SSN_MESSAGE)
493 break;
494 /* drop packet and try for another */
495 NBDEBUG("non-session packet %x\n", rpcode);
496 if (m) {
497 m_freem(m);
498 m = NULL;
499 }
500 }
501
502 out:
503 if (error) {
504 if (m)
505 m_freem(m);
506 return error;
507 }
508 if (mpp)
509 *mpp = m;
510 else
511 m_freem(m);
512 *lenp = len;
513 *rpcodep = rpcode;
514 return 0;
515 }
516
517 /*
518 * SMB transport interface
519 */
520 static int
521 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
522 {
523 struct nbpcb *nbp;
524
525 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
526 bzero(nbp, sizeof *nbp);
527 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
528 nbp->nbp_state = NBST_CLOSED;
529 nbp->nbp_vc = vcp;
530 nbp->nbp_sndbuf = smb_tcpsndbuf;
531 nbp->nbp_rcvbuf = smb_tcprcvbuf;
532 vcp->vc_tdata = nbp;
533 return 0;
534 }
535
536 static int
537 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
538 {
539 struct nbpcb *nbp = vcp->vc_tdata;
540
541 if (nbp == NULL)
542 return ENOTCONN;
543 smb_nbst_disconnect(vcp, td);
544 if (nbp->nbp_laddr)
545 free(nbp->nbp_laddr, M_SONAME);
546 if (nbp->nbp_paddr)
547 free(nbp->nbp_paddr, M_SONAME);
548 free(nbp, M_NBDATA);
549 return 0;
550 }
551
552 static int
553 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
554 {
555 struct nbpcb *nbp = vcp->vc_tdata;
556 struct sockaddr_nb *snb;
557 int error, slen;
558
559 NBDEBUG("\n");
560 error = EINVAL;
561 do {
562 if (nbp->nbp_flags & NBF_LOCADDR)
563 break;
564 /*
565 * It is possible to create NETBIOS name in the kernel,
566 * but nothing prevents us to do it in the user space.
567 */
568 if (sap == NULL)
569 break;
570 slen = sap->sa_len;
571 if (slen < NB_MINSALEN)
572 break;
573 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
574 if (snb == NULL) {
575 error = ENOMEM;
576 break;
577 }
578 nbp->nbp_laddr = snb;
579 nbp->nbp_flags |= NBF_LOCADDR;
580 error = 0;
581 } while(0);
582 return error;
583 }
584
585 static int
586 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
587 {
588 struct nbpcb *nbp = vcp->vc_tdata;
589 struct sockaddr_in sin;
590 struct sockaddr_nb *snb;
591 struct timespec ts1, ts2;
592 int error, slen;
593
594 NBDEBUG("\n");
595 if (nbp->nbp_tso != NULL)
596 return EISCONN;
597 if (nbp->nbp_laddr == NULL)
598 return EINVAL;
599 slen = sap->sa_len;
600 if (slen < NB_MINSALEN)
601 return EINVAL;
602 if (nbp->nbp_paddr) {
603 free(nbp->nbp_paddr, M_SONAME);
604 nbp->nbp_paddr = NULL;
605 }
606 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
607 if (snb == NULL)
608 return ENOMEM;
609 nbp->nbp_paddr = snb;
610 sin = snb->snb_addrin;
611 getnanotime(&ts1);
612 error = nb_connect_in(nbp, &sin, td);
613 if (error)
614 return error;
615 getnanotime(&ts2);
616 timespecsub(&ts2, &ts1);
617 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
618 ts2.tv_sec = 1;
619 nbp->nbp_timo = ts2;
620 timespecadd(&nbp->nbp_timo, &ts2);
621 timespecadd(&nbp->nbp_timo, &ts2);
622 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
623 error = nbssn_rq_request(nbp, td);
624 if (error)
625 smb_nbst_disconnect(vcp, td);
626 return error;
627 }
628
629 static int
630 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
631 {
632 struct nbpcb *nbp = vcp->vc_tdata;
633 struct socket *so;
634
635 if (nbp == NULL || nbp->nbp_tso == NULL)
636 return ENOTCONN;
637 if ((so = nbp->nbp_tso) != NULL) {
638 nbp->nbp_flags &= ~NBF_CONNECTED;
639 nbp->nbp_tso = (struct socket *)NULL;
640 soshutdown(so, 2);
641 soclose(so);
642 }
643 if (nbp->nbp_state != NBST_RETARGET) {
644 nbp->nbp_state = NBST_CLOSED;
645 }
646 return 0;
647 }
648
649 static int
650 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
651 {
652 struct nbpcb *nbp = vcp->vc_tdata;
653 int error;
654
655 if (nbp->nbp_state != NBST_SESSION) {
656 error = ENOTCONN;
657 goto abort;
658 }
659 M_PREPEND(m0, 4, M_TRYWAIT);
660 if (m0 == NULL)
661 return ENOBUFS;
662 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
663 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
664 return error;
665 abort:
666 if (m0)
667 m_freem(m0);
668 return error;
669 }
670
671
672 static int
673 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
674 {
675 struct nbpcb *nbp = vcp->vc_tdata;
676 u_int8_t rpcode;
677 int error, rplen;
678
679 nbp->nbp_flags |= NBF_RECVLOCK;
680 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
681 nbp->nbp_flags &= ~NBF_RECVLOCK;
682 return error;
683 }
684
685 static void
686 smb_nbst_timo(struct smb_vc *vcp)
687 {
688 return;
689 }
690
691 static void
692 smb_nbst_intr(struct smb_vc *vcp)
693 {
694 struct nbpcb *nbp = vcp->vc_tdata;
695
696 if (nbp == NULL || nbp->nbp_tso == NULL)
697 return;
698 sorwakeup(nbp->nbp_tso);
699 sowwakeup(nbp->nbp_tso);
700 }
701
702 static int
703 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
704 {
705 struct nbpcb *nbp = vcp->vc_tdata;
706
707 switch (param) {
708 case SMBTP_SNDSZ:
709 *(int*)data = nbp->nbp_sndbuf;
710 break;
711 case SMBTP_RCVSZ:
712 *(int*)data = nbp->nbp_rcvbuf;
713 break;
714 case SMBTP_TIMEOUT:
715 *(struct timespec*)data = nbp->nbp_timo;
716 break;
717 default:
718 return EINVAL;
719 }
720 return 0;
721 }
722
723 static int
724 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
725 {
726 struct nbpcb *nbp = vcp->vc_tdata;
727
728 switch (param) {
729 case SMBTP_SELECTID:
730 nbp->nbp_selectid = data;
731 break;
732 default:
733 return EINVAL;
734 }
735 return 0;
736 }
737
738 /*
739 * Check for fatal errors
740 */
741 static int
742 smb_nbst_fatal(struct smb_vc *vcp, int error)
743 {
744 switch (error) {
745 case ENOTCONN:
746 case ENETRESET:
747 case ECONNABORTED:
748 return 1;
749 }
750 return 0;
751 }
752
753
754 struct smb_tran_desc smb_tran_nbtcp_desc = {
755 SMBT_NBTCP,
756 smb_nbst_create, smb_nbst_done,
757 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
758 smb_nbst_send, smb_nbst_recv,
759 smb_nbst_timo, smb_nbst_intr,
760 smb_nbst_getparam, smb_nbst_setparam,
761 smb_nbst_fatal
762 };
763
Cache object: 1b13db89d2cb0f71a31101cbaf54bcfa
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