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 * $FreeBSD: releng/5.1/sys/netsmb/smb_trantcp.c 111119 2003-02-19 05:47:46Z imp $
33 */
34 #include <sys/param.h>
35 #include <sys/condvar.h>
36 #include <sys/kernel.h>
37 #include <sys/lock.h>
38 #include <sys/malloc.h>
39 #include <sys/mbuf.h>
40 #include <sys/poll.h>
41 #include <sys/proc.h>
42 #include <sys/protosw.h>
43 #include <sys/signalvar.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
46 #include <sys/sx.h>
47 #include <sys/sysctl.h>
48 #include <sys/systm.h>
49 #include <sys/uio.h>
50
51 #include <net/if.h>
52 #include <net/route.h>
53
54 #include <netinet/in.h>
55 #include <netinet/tcp.h>
56
57 #include <sys/mchain.h>
58
59 #include <netsmb/netbios.h>
60
61 #include <netsmb/smb.h>
62 #include <netsmb/smb_conn.h>
63 #include <netsmb/smb_tran.h>
64 #include <netsmb/smb_trantcp.h>
65 #include <netsmb/smb_subr.h>
66
67 #define M_NBDATA M_PCB
68
69 static int smb_tcpsndbuf = NB_SNDQ - 1;
70 static int smb_tcprcvbuf = NB_RCVQ - 1;
71
72 SYSCTL_DECL(_net_smb);
73 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
74 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
75
76 #define nb_sosend(so,m,flags,td) (so)->so_proto->pr_usrreqs->pru_sosend( \
77 so, NULL, 0, m, 0, flags, td)
78
79 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
80 u_int8_t *rpcodep, struct thread *td);
81 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
82
83 static int
84 nb_setsockopt_int(struct socket *so, int level, int name, int val)
85 {
86 struct sockopt sopt;
87
88 bzero(&sopt, sizeof(sopt));
89 sopt.sopt_level = level;
90 sopt.sopt_name = name;
91 sopt.sopt_val = &val;
92 sopt.sopt_valsize = sizeof(val);
93 return sosetopt(so, &sopt);
94 }
95
96 static __inline int
97 nb_poll(struct nbpcb *nbp, int events, struct thread *td)
98 {
99 return nbp->nbp_tso->so_proto->pr_usrreqs->pru_sopoll(nbp->nbp_tso,
100 events, NULL, td);
101 }
102
103 static int
104 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events,
105 struct thread *td)
106 {
107 struct timeval atv, rtv, ttv;
108 int ncoll, timo, error;
109
110 if (tv) {
111 atv = *tv;
112 if (itimerfix(&atv)) {
113 error = EINVAL;
114 goto done_noproclock;
115 }
116 getmicrouptime(&rtv);
117 timevaladd(&atv, &rtv);
118 }
119 timo = 0;
120 mtx_lock(&sellock);
121 retry:
122
123 ncoll = nselcoll;
124 mtx_lock_spin(&sched_lock);
125 td->td_flags |= TDF_SELECT;
126 mtx_unlock_spin(&sched_lock);
127 mtx_unlock(&sellock);
128
129 /* XXX: Should be done when the thread is initialized. */
130 TAILQ_INIT(&td->td_selq);
131 error = nb_poll(nbp, events, td);
132 mtx_lock(&sellock);
133 if (error) {
134 error = 0;
135 goto done;
136 }
137 if (tv) {
138 getmicrouptime(&rtv);
139 if (timevalcmp(&rtv, &atv, >=))
140 goto done;
141 ttv = atv;
142 timevalsub(&ttv, &rtv);
143 timo = tvtohz(&ttv);
144 }
145 /*
146 * An event of our interest may occur during locking a process.
147 * In order to avoid missing the event that occurred during locking
148 * the process, test P_SELECT and rescan file descriptors if
149 * necessary.
150 */
151 mtx_lock_spin(&sched_lock);
152 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) {
153 mtx_unlock_spin(&sched_lock);
154 goto retry;
155 }
156 mtx_unlock_spin(&sched_lock);
157
158 if (timo > 0)
159 error = cv_timedwait(&selwait, &sellock, timo);
160 else {
161 cv_wait(&selwait, &sellock);
162 error = 0;
163 }
164
165 done:
166 clear_selinfo_list(td);
167
168 mtx_lock_spin(&sched_lock);
169 td->td_flags &= ~TDF_SELECT;
170 mtx_unlock_spin(&sched_lock);
171 mtx_unlock(&sellock);
172
173 done_noproclock:
174 if (error == ERESTART)
175 return 0;
176 return error;
177 }
178
179 static int
180 nb_intr(struct nbpcb *nbp, struct proc *p)
181 {
182 return 0;
183 }
184
185 static void
186 nb_upcall(struct socket *so, void *arg, int waitflag)
187 {
188 struct nbpcb *nbp = arg;
189
190 if (arg == NULL || nbp->nbp_selectid == NULL)
191 return;
192 wakeup(nbp->nbp_selectid);
193 }
194
195 static int
196 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
197 {
198 u_int32_t *p = mtod(m, u_int32_t *);
199
200 *p = htonl((len & 0x1FFFF) | (type << 24));
201 return 0;
202 }
203
204 static int
205 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
206 {
207 int error;
208 u_char seglen, *cp;
209
210 cp = snb->snb_name;
211 if (*cp == 0)
212 return EINVAL;
213 NBDEBUG("[%s]\n", cp);
214 for (;;) {
215 seglen = (*cp) + 1;
216 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
217 if (error)
218 return error;
219 if (seglen == 1)
220 break;
221 cp += seglen;
222 }
223 return 0;
224 }
225
226 static int
227 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
228 {
229 struct socket *so;
230 int error, s;
231
232 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
233 td->td_ucred, td);
234 if (error)
235 return error;
236 nbp->nbp_tso = so;
237 so->so_upcallarg = (caddr_t)nbp;
238 so->so_upcall = nb_upcall;
239 so->so_rcv.sb_flags |= SB_UPCALL;
240 so->so_rcv.sb_timeo = (5 * hz);
241 so->so_snd.sb_timeo = (5 * hz);
242 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
243 if (error)
244 goto bad;
245 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
246 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
247 so->so_rcv.sb_flags &= ~SB_NOINTR;
248 so->so_snd.sb_flags &= ~SB_NOINTR;
249 error = soconnect(so, (struct sockaddr*)to, td);
250 if (error)
251 goto bad;
252 s = splnet();
253 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
254 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
255 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
256 (error = nb_intr(nbp, td->td_proc)) != 0) {
257 so->so_state &= ~SS_ISCONNECTING;
258 splx(s);
259 goto bad;
260 }
261 }
262 if (so->so_error) {
263 error = so->so_error;
264 so->so_error = 0;
265 splx(s);
266 goto bad;
267 }
268 splx(s);
269 return 0;
270 bad:
271 smb_nbst_disconnect(nbp->nbp_vc, td);
272 return error;
273 }
274
275 static int
276 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
277 {
278 struct mbchain mb, *mbp = &mb;
279 struct mdchain md, *mdp = &md;
280 struct mbuf *m0;
281 struct timeval tv;
282 struct sockaddr_in sin;
283 u_short port;
284 u_int8_t rpcode;
285 int error, rplen;
286
287 error = mb_init(mbp);
288 if (error)
289 return error;
290 mb_put_uint32le(mbp, 0);
291 nb_put_name(mbp, nbp->nbp_paddr);
292 nb_put_name(mbp, nbp->nbp_laddr);
293 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
294 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
295 if (!error) {
296 nbp->nbp_state = NBST_RQSENT;
297 }
298 mb_detach(mbp);
299 mb_done(mbp);
300 if (error)
301 return error;
302 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
303 error = nbssn_rselect(nbp, &tv, POLLIN, td);
304 if (error == EWOULDBLOCK) { /* Timeout */
305 NBDEBUG("initial request timeout\n");
306 return ETIMEDOUT;
307 }
308 if (error) /* restart or interrupt */
309 return error;
310 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
311 if (error) {
312 NBDEBUG("recv() error %d\n", error);
313 return error;
314 }
315 /*
316 * Process NETBIOS reply
317 */
318 if (m0)
319 md_initm(mdp, m0);
320 error = 0;
321 do {
322 if (rpcode == NB_SSN_POSRESP) {
323 nbp->nbp_state = NBST_SESSION;
324 nbp->nbp_flags |= NBF_CONNECTED;
325 break;
326 }
327 if (rpcode != NB_SSN_RTGRESP) {
328 error = ECONNABORTED;
329 break;
330 }
331 if (rplen != 6) {
332 error = ECONNABORTED;
333 break;
334 }
335 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
336 md_get_uint16(mdp, &port);
337 sin.sin_port = port;
338 nbp->nbp_state = NBST_RETARGET;
339 smb_nbst_disconnect(nbp->nbp_vc, td);
340 error = nb_connect_in(nbp, &sin, td);
341 if (!error)
342 error = nbssn_rq_request(nbp, td);
343 if (error) {
344 smb_nbst_disconnect(nbp->nbp_vc, td);
345 break;
346 }
347 } while(0);
348 if (m0)
349 md_done(mdp);
350 return error;
351 }
352
353 static int
354 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
355 u_int8_t *rpcodep, int flags, struct thread *td)
356 {
357 struct socket *so = nbp->nbp_tso;
358 struct uio auio;
359 struct iovec aio;
360 u_int32_t len;
361 int error;
362
363 aio.iov_base = (caddr_t)&len;
364 aio.iov_len = sizeof(len);
365 auio.uio_iov = &aio;
366 auio.uio_iovcnt = 1;
367 auio.uio_segflg = UIO_SYSSPACE;
368 auio.uio_rw = UIO_READ;
369 auio.uio_offset = 0;
370 auio.uio_resid = sizeof(len);
371 auio.uio_td = td;
372 error = so->so_proto->pr_usrreqs->pru_soreceive
373 (so, (struct sockaddr **)NULL, &auio,
374 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
375 if (error)
376 return error;
377 if (auio.uio_resid > 0) {
378 SMBSDEBUG("short reply\n");
379 return EPIPE;
380 }
381 len = ntohl(len);
382 *rpcodep = (len >> 24) & 0xFF;
383 len &= 0x1ffff;
384 if (len > SMB_MAXPKTLEN) {
385 SMBERROR("packet too long (%d)\n", len);
386 return EFBIG;
387 }
388 *lenp = len;
389 return 0;
390 }
391
392 static int
393 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
394 u_int8_t *rpcodep, struct thread *td)
395 {
396 struct socket *so = nbp->nbp_tso;
397 struct uio auio;
398 struct mbuf *m, *tm, *im;
399 u_int8_t rpcode;
400 int len, resid;
401 int error, rcvflg;
402
403 if (so == NULL)
404 return ENOTCONN;
405
406 if (mpp)
407 *mpp = NULL;
408 m = NULL;
409 for(;;) {
410 /*
411 * Poll for a response header.
412 * If we don't have one waiting, return.
413 */
414 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
415 if (so->so_state &
416 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
417 nbp->nbp_state = NBST_CLOSED;
418 NBDEBUG("session closed by peer\n");
419 return ECONNRESET;
420 }
421 if (error)
422 return error;
423 if (len == 0 && nbp->nbp_state != NBST_SESSION)
424 break;
425 /* no data, try again */
426 if (rpcode == NB_SSN_KEEPALIVE)
427 continue;
428
429 /*
430 * Loop, blocking, for data following the response header.
431 *
432 * Note that we can't simply block here with MSG_WAITALL for the
433 * entire response size, as it may be larger than the TCP
434 * slow-start window that the sender employs. This will result
435 * in the sender stalling until the delayed ACK is sent, then
436 * resuming slow-start, resulting in very poor performance.
437 *
438 * Instead, we never request more than NB_SORECEIVE_CHUNK
439 * bytes at a time, resulting in an ack being pushed by
440 * the TCP code at the completion of each call.
441 */
442 resid = len;
443 while (resid > 0) {
444 tm = NULL;
445 rcvflg = MSG_WAITALL;
446 bzero(&auio, sizeof(auio));
447 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
448 auio.uio_td = td;
449 resid -= auio.uio_resid;
450 /*
451 * Spin until we have collected everything in
452 * this chunk.
453 */
454 do {
455 rcvflg = MSG_WAITALL;
456 error = so->so_proto->pr_usrreqs->pru_soreceive
457 (so, (struct sockaddr **)NULL,
458 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
459 } while (error == EWOULDBLOCK || error == EINTR ||
460 error == ERESTART);
461 if (error)
462 goto out;
463 /* short return guarantees unhappiness */
464 if (auio.uio_resid > 0) {
465 SMBERROR("packet is shorter than expected\n");
466 error = EPIPE;
467 goto out;
468 }
469 /* append received chunk to previous chunk(s) */
470 if (m == NULL) {
471 m = tm;
472 } else {
473 /*
474 * Just glue the new chain on the end.
475 * Consumer will pullup as required.
476 */
477 for (im = m; im->m_next != NULL; im = im->m_next)
478 ;
479 im->m_next = tm;
480 }
481 }
482 /* got a session/message packet? */
483 if (nbp->nbp_state == NBST_SESSION &&
484 rpcode == NB_SSN_MESSAGE)
485 break;
486 /* drop packet and try for another */
487 NBDEBUG("non-session packet %x\n", rpcode);
488 if (m) {
489 m_freem(m);
490 m = NULL;
491 }
492 }
493
494 out:
495 if (error) {
496 if (m)
497 m_freem(m);
498 return error;
499 }
500 if (mpp)
501 *mpp = m;
502 else
503 m_freem(m);
504 *lenp = len;
505 *rpcodep = rpcode;
506 return 0;
507 }
508
509 /*
510 * SMB transport interface
511 */
512 static int
513 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
514 {
515 struct nbpcb *nbp;
516
517 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
518 bzero(nbp, sizeof *nbp);
519 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
520 nbp->nbp_state = NBST_CLOSED;
521 nbp->nbp_vc = vcp;
522 nbp->nbp_sndbuf = smb_tcpsndbuf;
523 nbp->nbp_rcvbuf = smb_tcprcvbuf;
524 vcp->vc_tdata = nbp;
525 return 0;
526 }
527
528 static int
529 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
530 {
531 struct nbpcb *nbp = vcp->vc_tdata;
532
533 if (nbp == NULL)
534 return ENOTCONN;
535 smb_nbst_disconnect(vcp, td);
536 if (nbp->nbp_laddr)
537 free(nbp->nbp_laddr, M_SONAME);
538 if (nbp->nbp_paddr)
539 free(nbp->nbp_paddr, M_SONAME);
540 free(nbp, M_NBDATA);
541 return 0;
542 }
543
544 static int
545 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
546 {
547 struct nbpcb *nbp = vcp->vc_tdata;
548 struct sockaddr_nb *snb;
549 int error, slen;
550
551 NBDEBUG("\n");
552 error = EINVAL;
553 do {
554 if (nbp->nbp_flags & NBF_LOCADDR)
555 break;
556 /*
557 * It is possible to create NETBIOS name in the kernel,
558 * but nothing prevents us to do it in the user space.
559 */
560 if (sap == NULL)
561 break;
562 slen = sap->sa_len;
563 if (slen < NB_MINSALEN)
564 break;
565 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
566 if (snb == NULL) {
567 error = ENOMEM;
568 break;
569 }
570 nbp->nbp_laddr = snb;
571 nbp->nbp_flags |= NBF_LOCADDR;
572 error = 0;
573 } while(0);
574 return error;
575 }
576
577 static int
578 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
579 {
580 struct nbpcb *nbp = vcp->vc_tdata;
581 struct sockaddr_in sin;
582 struct sockaddr_nb *snb;
583 struct timespec ts1, ts2;
584 int error, slen;
585
586 NBDEBUG("\n");
587 if (nbp->nbp_tso != NULL)
588 return EISCONN;
589 if (nbp->nbp_laddr == NULL)
590 return EINVAL;
591 slen = sap->sa_len;
592 if (slen < NB_MINSALEN)
593 return EINVAL;
594 if (nbp->nbp_paddr) {
595 free(nbp->nbp_paddr, M_SONAME);
596 nbp->nbp_paddr = NULL;
597 }
598 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
599 if (snb == NULL)
600 return ENOMEM;
601 nbp->nbp_paddr = snb;
602 sin = snb->snb_addrin;
603 getnanotime(&ts1);
604 error = nb_connect_in(nbp, &sin, td);
605 if (error)
606 return error;
607 getnanotime(&ts2);
608 timespecsub(&ts2, &ts1);
609 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
610 ts2.tv_sec = 1;
611 nbp->nbp_timo = ts2;
612 timespecadd(&nbp->nbp_timo, &ts2);
613 timespecadd(&nbp->nbp_timo, &ts2);
614 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
615 error = nbssn_rq_request(nbp, td);
616 if (error)
617 smb_nbst_disconnect(vcp, td);
618 return error;
619 }
620
621 static int
622 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
623 {
624 struct nbpcb *nbp = vcp->vc_tdata;
625 struct socket *so;
626
627 if (nbp == NULL || nbp->nbp_tso == NULL)
628 return ENOTCONN;
629 if ((so = nbp->nbp_tso) != NULL) {
630 nbp->nbp_flags &= ~NBF_CONNECTED;
631 nbp->nbp_tso = (struct socket *)NULL;
632 soshutdown(so, 2);
633 soclose(so);
634 }
635 if (nbp->nbp_state != NBST_RETARGET) {
636 nbp->nbp_state = NBST_CLOSED;
637 }
638 return 0;
639 }
640
641 static int
642 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
643 {
644 struct nbpcb *nbp = vcp->vc_tdata;
645 int error;
646
647 if (nbp->nbp_state != NBST_SESSION) {
648 error = ENOTCONN;
649 goto abort;
650 }
651 M_PREPEND(m0, 4, M_TRYWAIT);
652 if (m0 == NULL)
653 return ENOBUFS;
654 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
655 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
656 return error;
657 abort:
658 if (m0)
659 m_freem(m0);
660 return error;
661 }
662
663
664 static int
665 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
666 {
667 struct nbpcb *nbp = vcp->vc_tdata;
668 u_int8_t rpcode;
669 int error, rplen;
670
671 nbp->nbp_flags |= NBF_RECVLOCK;
672 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
673 nbp->nbp_flags &= ~NBF_RECVLOCK;
674 return error;
675 }
676
677 static void
678 smb_nbst_timo(struct smb_vc *vcp)
679 {
680 return;
681 }
682
683 static void
684 smb_nbst_intr(struct smb_vc *vcp)
685 {
686 struct nbpcb *nbp = vcp->vc_tdata;
687
688 if (nbp == NULL || nbp->nbp_tso == NULL)
689 return;
690 sorwakeup(nbp->nbp_tso);
691 sowwakeup(nbp->nbp_tso);
692 }
693
694 static int
695 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
696 {
697 struct nbpcb *nbp = vcp->vc_tdata;
698
699 switch (param) {
700 case SMBTP_SNDSZ:
701 *(int*)data = nbp->nbp_sndbuf;
702 break;
703 case SMBTP_RCVSZ:
704 *(int*)data = nbp->nbp_rcvbuf;
705 break;
706 case SMBTP_TIMEOUT:
707 *(struct timespec*)data = nbp->nbp_timo;
708 break;
709 default:
710 return EINVAL;
711 }
712 return 0;
713 }
714
715 static int
716 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
717 {
718 struct nbpcb *nbp = vcp->vc_tdata;
719
720 switch (param) {
721 case SMBTP_SELECTID:
722 nbp->nbp_selectid = data;
723 break;
724 default:
725 return EINVAL;
726 }
727 return 0;
728 }
729
730 /*
731 * Check for fatal errors
732 */
733 static int
734 smb_nbst_fatal(struct smb_vc *vcp, int error)
735 {
736 switch (error) {
737 case ENOTCONN:
738 case ENETRESET:
739 case ECONNABORTED:
740 return 1;
741 }
742 return 0;
743 }
744
745
746 struct smb_tran_desc smb_tran_nbtcp_desc = {
747 SMBT_NBTCP,
748 smb_nbst_create, smb_nbst_done,
749 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
750 smb_nbst_send, smb_nbst_recv,
751 smb_nbst_timo, smb_nbst_intr,
752 smb_nbst_getparam, smb_nbst_setparam,
753 smb_nbst_fatal
754 };
755
Cache object: a74e7783fe30755d33e6ba25a3d14a01
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