1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2000-2001 Boris Popov
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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/condvar.h>
31 #include <sys/kernel.h>
32 #include <sys/lock.h>
33 #include <sys/malloc.h>
34 #include <sys/mbuf.h>
35 #include <sys/poll.h>
36 #include <sys/proc.h>
37 #include <sys/protosw.h>
38 #include <sys/signalvar.h>
39 #include <sys/socket.h>
40 #include <sys/socketvar.h>
41 #include <sys/sx.h>
42 #include <sys/sysctl.h>
43 #include <sys/systm.h>
44 #include <sys/uio.h>
45
46 #include <net/if.h>
47 #include <net/route.h>
48 #include <net/vnet.h>
49
50 #include <netinet/in.h>
51 #include <netinet/tcp.h>
52
53 #include <sys/mchain.h>
54
55 #include <netsmb/netbios.h>
56
57 #include <netsmb/smb.h>
58 #include <netsmb/smb_conn.h>
59 #include <netsmb/smb_tran.h>
60 #include <netsmb/smb_trantcp.h>
61 #include <netsmb/smb_subr.h>
62
63 #define M_NBDATA M_PCB
64
65 static int smb_tcpsndbuf = NB_SNDQ - 1;
66 static int smb_tcprcvbuf = NB_RCVQ - 1;
67
68 SYSCTL_DECL(_net_smb);
69 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
70 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
71
72 #define nb_sosend(so,m,flags,td) sosend(so, NULL, 0, m, 0, flags, td)
73
74 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
75 u_int8_t *rpcodep, struct thread *td);
76 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
77
78 static int
nb_setsockopt_int(struct socket * so,int level,int name,int val)79 nb_setsockopt_int(struct socket *so, int level, int name, int val)
80 {
81 struct sockopt sopt;
82 int error;
83
84 bzero(&sopt, sizeof(sopt));
85 sopt.sopt_level = level;
86 sopt.sopt_name = name;
87 sopt.sopt_val = &val;
88 sopt.sopt_valsize = sizeof(val);
89 CURVNET_SET(so->so_vnet);
90 error = sosetopt(so, &sopt);
91 CURVNET_RESTORE();
92 return error;
93 }
94
95 static int
nb_intr(struct nbpcb * nbp,struct proc * p)96 nb_intr(struct nbpcb *nbp, struct proc *p)
97 {
98 return 0;
99 }
100
101 static int
nb_upcall(struct socket * so,void * arg,int waitflag)102 nb_upcall(struct socket *so, void *arg, int waitflag)
103 {
104 struct nbpcb *nbp = arg;
105
106 if (arg == NULL || nbp->nbp_selectid == NULL)
107 return (SU_OK);
108 wakeup(nbp->nbp_selectid);
109 return (SU_OK);
110 }
111
112 static int
nb_sethdr(struct mbuf * m,u_int8_t type,u_int32_t len)113 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
114 {
115 u_int32_t *p = mtod(m, u_int32_t *);
116
117 *p = htonl((len & 0x1FFFF) | (type << 24));
118 return 0;
119 }
120
121 static int
nb_put_name(struct mbchain * mbp,struct sockaddr_nb * snb)122 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
123 {
124 int error;
125 u_char seglen, *cp;
126
127 cp = snb->snb_name;
128 if (*cp == 0)
129 return EINVAL;
130 NBDEBUG("[%s]\n", cp);
131 for (;;) {
132 seglen = (*cp) + 1;
133 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
134 if (error)
135 return error;
136 if (seglen == 1)
137 break;
138 cp += seglen;
139 }
140 return 0;
141 }
142
143 static int
nb_connect_in(struct nbpcb * nbp,struct sockaddr_in * to,struct thread * td)144 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
145 {
146 struct socket *so;
147 int error, s;
148
149 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
150 td->td_ucred, td);
151 if (error)
152 return error;
153 nbp->nbp_tso = so;
154 SOCKBUF_LOCK(&so->so_rcv);
155 soupcall_set(so, SO_RCV, nb_upcall, nbp);
156 SOCKBUF_UNLOCK(&so->so_rcv);
157 so->so_rcv.sb_timeo = (5 * SBT_1S);
158 so->so_snd.sb_timeo = (5 * SBT_1S);
159 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
160 if (error)
161 goto bad;
162 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
163 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
164 SOCKBUF_LOCK(&so->so_rcv);
165 so->so_rcv.sb_flags &= ~SB_NOINTR;
166 SOCKBUF_UNLOCK(&so->so_rcv);
167 SOCKBUF_LOCK(&so->so_snd);
168 so->so_snd.sb_flags &= ~SB_NOINTR;
169 SOCKBUF_UNLOCK(&so->so_snd);
170 error = soconnect(so, (struct sockaddr*)to, td);
171 if (error)
172 goto bad;
173 s = splnet();
174 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
175 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
176 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
177 (error = nb_intr(nbp, td->td_proc)) != 0) {
178 so->so_state &= ~SS_ISCONNECTING;
179 splx(s);
180 goto bad;
181 }
182 }
183 if (so->so_error) {
184 error = so->so_error;
185 so->so_error = 0;
186 splx(s);
187 goto bad;
188 }
189 splx(s);
190 return 0;
191 bad:
192 smb_nbst_disconnect(nbp->nbp_vc, td);
193 return error;
194 }
195
196 static int
nbssn_rq_request(struct nbpcb * nbp,struct thread * td)197 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
198 {
199 struct mbchain *mbp;
200 struct mdchain *mdp;
201 struct mbuf *m0;
202 struct timeval tv;
203 struct sockaddr_in sin;
204 u_short port;
205 u_int8_t rpcode;
206 int error, rplen;
207
208 mbp = malloc(sizeof(struct mbchain), M_NBDATA, M_WAITOK);
209 mdp = malloc(sizeof(struct mbchain), M_NBDATA, M_WAITOK);
210 error = mb_init(mbp);
211 if (error) {
212 free(mbp, M_NBDATA);
213 free(mdp, M_NBDATA);
214 return error;
215 }
216 mb_put_uint32le(mbp, 0);
217 nb_put_name(mbp, nbp->nbp_paddr);
218 nb_put_name(mbp, nbp->nbp_laddr);
219 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
220 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
221 if (!error) {
222 nbp->nbp_state = NBST_RQSENT;
223 }
224 mb_detach(mbp);
225 mb_done(mbp);
226 free(mbp, M_NBDATA);
227 if (error) {
228 free(mdp, M_NBDATA);
229 return error;
230 }
231 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
232 error = selsocket(nbp->nbp_tso, POLLIN, &tv, td);
233 if (error == EWOULDBLOCK) { /* Timeout */
234 NBDEBUG("initial request timeout\n");
235 free(mdp, M_NBDATA);
236 return ETIMEDOUT;
237 }
238 if (error) { /* restart or interrupt */
239 free(mdp, M_NBDATA);
240 return error;
241 }
242 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
243 if (error) {
244 NBDEBUG("recv() error %d\n", error);
245 free(mdp, M_NBDATA);
246 return error;
247 }
248 /*
249 * Process NETBIOS reply
250 */
251 if (m0)
252 md_initm(mdp, m0);
253 error = 0;
254 do {
255 if (rpcode == NB_SSN_POSRESP) {
256 nbp->nbp_state = NBST_SESSION;
257 nbp->nbp_flags |= NBF_CONNECTED;
258 break;
259 }
260 if (rpcode != NB_SSN_RTGRESP) {
261 error = ECONNABORTED;
262 break;
263 }
264 if (rplen != 6) {
265 error = ECONNABORTED;
266 break;
267 }
268 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
269 md_get_uint16(mdp, &port);
270 sin.sin_port = port;
271 nbp->nbp_state = NBST_RETARGET;
272 smb_nbst_disconnect(nbp->nbp_vc, td);
273 error = nb_connect_in(nbp, &sin, td);
274 if (!error)
275 error = nbssn_rq_request(nbp, td);
276 if (error) {
277 smb_nbst_disconnect(nbp->nbp_vc, td);
278 break;
279 }
280 } while(0);
281 if (m0)
282 md_done(mdp);
283 free(mdp, M_NBDATA);
284 return error;
285 }
286
287 static int
nbssn_recvhdr(struct nbpcb * nbp,int * lenp,u_int8_t * rpcodep,int flags,struct thread * td)288 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
289 u_int8_t *rpcodep, int flags, struct thread *td)
290 {
291 struct socket *so = nbp->nbp_tso;
292 struct uio auio;
293 struct iovec aio;
294 u_int32_t len;
295 int error;
296
297 aio.iov_base = (caddr_t)&len;
298 aio.iov_len = sizeof(len);
299 auio.uio_iov = &aio;
300 auio.uio_iovcnt = 1;
301 auio.uio_segflg = UIO_SYSSPACE;
302 auio.uio_rw = UIO_READ;
303 auio.uio_offset = 0;
304 auio.uio_resid = sizeof(len);
305 auio.uio_td = td;
306 CURVNET_SET(so->so_vnet);
307 error = soreceive(so, (struct sockaddr **)NULL, &auio,
308 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
309 CURVNET_RESTORE();
310 if (error)
311 return error;
312 if (auio.uio_resid > 0) {
313 SMBSDEBUG("short reply\n");
314 return EPIPE;
315 }
316 len = ntohl(len);
317 *rpcodep = (len >> 24) & 0xFF;
318 len &= 0x1ffff;
319 if (len > SMB_MAXPKTLEN) {
320 SMBERROR("packet too long (%d)\n", len);
321 return EFBIG;
322 }
323 *lenp = len;
324 return 0;
325 }
326
327 static int
nbssn_recv(struct nbpcb * nbp,struct mbuf ** mpp,int * lenp,u_int8_t * rpcodep,struct thread * td)328 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
329 u_int8_t *rpcodep, struct thread *td)
330 {
331 struct socket *so = nbp->nbp_tso;
332 struct uio auio;
333 struct mbuf *m, *tm, *im;
334 u_int8_t rpcode;
335 int len, resid;
336 int error, rcvflg;
337
338 if (so == NULL)
339 return ENOTCONN;
340
341 if (mpp)
342 *mpp = NULL;
343 m = NULL;
344 for(;;) {
345 /*
346 * Poll for a response header.
347 * If we don't have one waiting, return.
348 */
349 len = 0;
350 rpcode = 0;
351 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
352 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) ||
353 (so->so_rcv.sb_state & SBS_CANTRCVMORE)) {
354 nbp->nbp_state = NBST_CLOSED;
355 NBDEBUG("session closed by peer\n");
356 return ECONNRESET;
357 }
358 if (error)
359 return error;
360 if (len == 0 && nbp->nbp_state != NBST_SESSION)
361 break;
362 /* no data, try again */
363 if (rpcode == NB_SSN_KEEPALIVE)
364 continue;
365
366 /*
367 * Loop, blocking, for data following the response header.
368 *
369 * Note that we can't simply block here with MSG_WAITALL for the
370 * entire response size, as it may be larger than the TCP
371 * slow-start window that the sender employs. This will result
372 * in the sender stalling until the delayed ACK is sent, then
373 * resuming slow-start, resulting in very poor performance.
374 *
375 * Instead, we never request more than NB_SORECEIVE_CHUNK
376 * bytes at a time, resulting in an ack being pushed by
377 * the TCP code at the completion of each call.
378 */
379 resid = len;
380 while (resid > 0) {
381 tm = NULL;
382 rcvflg = MSG_WAITALL;
383 bzero(&auio, sizeof(auio));
384 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
385 auio.uio_td = td;
386 resid -= auio.uio_resid;
387 /*
388 * Spin until we have collected everything in
389 * this chunk.
390 */
391 do {
392 rcvflg = MSG_WAITALL;
393 CURVNET_SET(so->so_vnet);
394 error = soreceive(so, (struct sockaddr **)NULL,
395 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
396 CURVNET_RESTORE();
397 } while (error == EWOULDBLOCK || error == EINTR ||
398 error == ERESTART);
399 if (error)
400 goto out;
401 /* short return guarantees unhappiness */
402 if (auio.uio_resid > 0) {
403 SMBERROR("packet is shorter than expected\n");
404 error = EPIPE;
405 goto out;
406 }
407 /* append received chunk to previous chunk(s) */
408 if (m == NULL) {
409 m = tm;
410 } else {
411 /*
412 * Just glue the new chain on the end.
413 * Consumer will pullup as required.
414 */
415 for (im = m; im->m_next != NULL; im = im->m_next)
416 ;
417 im->m_next = tm;
418 }
419 }
420 /* got a session/message packet? */
421 if (nbp->nbp_state == NBST_SESSION &&
422 rpcode == NB_SSN_MESSAGE)
423 break;
424 /* drop packet and try for another */
425 NBDEBUG("non-session packet %x\n", rpcode);
426 if (m) {
427 m_freem(m);
428 m = NULL;
429 }
430 }
431
432 out:
433 if (error) {
434 if (m)
435 m_freem(m);
436 return error;
437 }
438 if (mpp)
439 *mpp = m;
440 else
441 m_freem(m);
442 *lenp = len;
443 *rpcodep = rpcode;
444 return 0;
445 }
446
447 /*
448 * SMB transport interface
449 */
450 static int
smb_nbst_create(struct smb_vc * vcp,struct thread * td)451 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
452 {
453 struct nbpcb *nbp;
454
455 nbp = malloc(sizeof *nbp, M_NBDATA, M_WAITOK);
456 bzero(nbp, sizeof *nbp);
457 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
458 nbp->nbp_state = NBST_CLOSED;
459 nbp->nbp_vc = vcp;
460 nbp->nbp_sndbuf = smb_tcpsndbuf;
461 nbp->nbp_rcvbuf = smb_tcprcvbuf;
462 vcp->vc_tdata = nbp;
463 return 0;
464 }
465
466 static int
smb_nbst_done(struct smb_vc * vcp,struct thread * td)467 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
468 {
469 struct nbpcb *nbp = vcp->vc_tdata;
470
471 if (nbp == NULL)
472 return ENOTCONN;
473 smb_nbst_disconnect(vcp, td);
474 if (nbp->nbp_laddr)
475 free(nbp->nbp_laddr, M_SONAME);
476 if (nbp->nbp_paddr)
477 free(nbp->nbp_paddr, M_SONAME);
478 free(nbp, M_NBDATA);
479 return 0;
480 }
481
482 static int
smb_nbst_bind(struct smb_vc * vcp,struct sockaddr * sap,struct thread * td)483 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
484 {
485 struct nbpcb *nbp = vcp->vc_tdata;
486 struct sockaddr_nb *snb;
487 int error, slen;
488
489 NBDEBUG("\n");
490 error = EINVAL;
491 do {
492 if (nbp->nbp_flags & NBF_LOCADDR)
493 break;
494 /*
495 * It is possible to create NETBIOS name in the kernel,
496 * but nothing prevents us to do it in the user space.
497 */
498 if (sap == NULL)
499 break;
500 slen = sap->sa_len;
501 if (slen < NB_MINSALEN)
502 break;
503 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
504 if (snb == NULL) {
505 error = ENOMEM;
506 break;
507 }
508 nbp->nbp_laddr = snb;
509 nbp->nbp_flags |= NBF_LOCADDR;
510 error = 0;
511 } while(0);
512 return error;
513 }
514
515 static int
smb_nbst_connect(struct smb_vc * vcp,struct sockaddr * sap,struct thread * td)516 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
517 {
518 struct nbpcb *nbp = vcp->vc_tdata;
519 struct sockaddr_in sin;
520 struct sockaddr_nb *snb;
521 struct timespec ts1, ts2;
522 int error, slen;
523
524 NBDEBUG("\n");
525 if (nbp->nbp_tso != NULL)
526 return EISCONN;
527 if (nbp->nbp_laddr == NULL)
528 return EINVAL;
529 slen = sap->sa_len;
530 if (slen < NB_MINSALEN)
531 return EINVAL;
532 if (nbp->nbp_paddr) {
533 free(nbp->nbp_paddr, M_SONAME);
534 nbp->nbp_paddr = NULL;
535 }
536 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
537 if (snb == NULL)
538 return ENOMEM;
539 nbp->nbp_paddr = snb;
540 sin = snb->snb_addrin;
541 getnanotime(&ts1);
542 error = nb_connect_in(nbp, &sin, td);
543 if (error)
544 return error;
545 getnanotime(&ts2);
546 timespecsub(&ts2, &ts1, &ts2);
547 if (ts2.tv_sec == 0) {
548 ts2.tv_sec = 1;
549 ts2.tv_nsec = 0;
550 }
551 timespecadd(&ts2, &ts2, &nbp->nbp_timo);
552 timespecadd(&nbp->nbp_timo, &ts2, &nbp->nbp_timo);
553 timespecadd(&nbp->nbp_timo, &ts2, &nbp->nbp_timo); /* * 4 */
554 error = nbssn_rq_request(nbp, td);
555 if (error)
556 smb_nbst_disconnect(vcp, td);
557 return error;
558 }
559
560 static int
smb_nbst_disconnect(struct smb_vc * vcp,struct thread * td)561 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
562 {
563 struct nbpcb *nbp = vcp->vc_tdata;
564 struct socket *so;
565
566 if (nbp == NULL || nbp->nbp_tso == NULL)
567 return ENOTCONN;
568 if ((so = nbp->nbp_tso) != NULL) {
569 nbp->nbp_flags &= ~NBF_CONNECTED;
570 nbp->nbp_tso = (struct socket *)NULL;
571 soshutdown(so, 2);
572 soclose(so);
573 }
574 if (nbp->nbp_state != NBST_RETARGET) {
575 nbp->nbp_state = NBST_CLOSED;
576 }
577 return 0;
578 }
579
580 static int
smb_nbst_send(struct smb_vc * vcp,struct mbuf * m0,struct thread * td)581 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
582 {
583 struct nbpcb *nbp = vcp->vc_tdata;
584 int error;
585
586 if (nbp->nbp_state != NBST_SESSION) {
587 error = ENOTCONN;
588 goto abort;
589 }
590 M_PREPEND(m0, 4, M_WAITOK);
591 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
592 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
593 return error;
594 abort:
595 if (m0)
596 m_freem(m0);
597 return error;
598 }
599
600 static int
smb_nbst_recv(struct smb_vc * vcp,struct mbuf ** mpp,struct thread * td)601 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
602 {
603 struct nbpcb *nbp = vcp->vc_tdata;
604 u_int8_t rpcode;
605 int error, rplen;
606
607 nbp->nbp_flags |= NBF_RECVLOCK;
608 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
609 nbp->nbp_flags &= ~NBF_RECVLOCK;
610 return error;
611 }
612
613 static void
smb_nbst_timo(struct smb_vc * vcp)614 smb_nbst_timo(struct smb_vc *vcp)
615 {
616 return;
617 }
618
619 static void
smb_nbst_intr(struct smb_vc * vcp)620 smb_nbst_intr(struct smb_vc *vcp)
621 {
622 struct nbpcb *nbp = vcp->vc_tdata;
623
624 if (nbp == NULL || nbp->nbp_tso == NULL)
625 return;
626 sorwakeup(nbp->nbp_tso);
627 sowwakeup(nbp->nbp_tso);
628 }
629
630 static int
smb_nbst_getparam(struct smb_vc * vcp,int param,void * data)631 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
632 {
633 struct nbpcb *nbp = vcp->vc_tdata;
634
635 switch (param) {
636 case SMBTP_SNDSZ:
637 *(int*)data = nbp->nbp_sndbuf;
638 break;
639 case SMBTP_RCVSZ:
640 *(int*)data = nbp->nbp_rcvbuf;
641 break;
642 case SMBTP_TIMEOUT:
643 *(struct timespec*)data = nbp->nbp_timo;
644 break;
645 default:
646 return EINVAL;
647 }
648 return 0;
649 }
650
651 static int
smb_nbst_setparam(struct smb_vc * vcp,int param,void * data)652 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
653 {
654 struct nbpcb *nbp = vcp->vc_tdata;
655
656 switch (param) {
657 case SMBTP_SELECTID:
658 nbp->nbp_selectid = data;
659 break;
660 default:
661 return EINVAL;
662 }
663 return 0;
664 }
665
666 /*
667 * Check for fatal errors
668 */
669 static int
smb_nbst_fatal(struct smb_vc * vcp,int error)670 smb_nbst_fatal(struct smb_vc *vcp, int error)
671 {
672 switch (error) {
673 case ENOTCONN:
674 case ENETRESET:
675 case ECONNABORTED:
676 return 1;
677 }
678 return 0;
679 }
680
681 struct smb_tran_desc smb_tran_nbtcp_desc = {
682 SMBT_NBTCP,
683 smb_nbst_create, smb_nbst_done,
684 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
685 smb_nbst_send, smb_nbst_recv,
686 smb_nbst_timo, smb_nbst_intr,
687 smb_nbst_getparam, smb_nbst_setparam,
688 smb_nbst_fatal
689 };
690