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("$FreeBSD$"); 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) sosend(so, NULL, 0, m, 0, flags, td) 79 80 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, 81 u_int8_t *rpcodep, struct thread *td); 82 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td); 83 84 static int 85 nb_setsockopt_int(struct socket *so, int level, int name, int val) 86 { 87 struct sockopt sopt; 88 89 bzero(&sopt, sizeof(sopt)); 90 sopt.sopt_level = level; 91 sopt.sopt_name = name; 92 sopt.sopt_val = &val; 93 sopt.sopt_valsize = sizeof(val); 94 return sosetopt(so, &sopt); 95 } 96 97 static int 98 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events, 99 struct thread *td) 100 { 101 struct timeval atv, rtv, ttv; 102 int ncoll, timo, error, revents; 103 104 if (tv) { 105 atv = *tv; 106 if (itimerfix(&atv)) { 107 error = EINVAL; 108 goto done_noproclock; 109 } 110 getmicrouptime(&rtv); 111 timevaladd(&atv, &rtv); 112 } 113 timo = 0; 114 mtx_lock(&sellock); 115 retry: 116 117 ncoll = nselcoll; 118 mtx_lock_spin(&sched_lock); 119 td->td_flags |= TDF_SELECT; 120 mtx_unlock_spin(&sched_lock); 121 mtx_unlock(&sellock); 122 123 /* XXX: Should be done when the thread is initialized. */ 124 TAILQ_INIT(&td->td_selq); 125 revents = sopoll(nbp->nbp_tso, events, NULL, td); 126 mtx_lock(&sellock); 127 if (revents) { 128 error = 0; 129 goto done; 130 } 131 if (tv) { 132 getmicrouptime(&rtv); 133 if (timevalcmp(&rtv, &atv, >=)) { 134 error = EWOULDBLOCK; 135 goto done; 136 } 137 ttv = atv; 138 timevalsub(&ttv, &rtv); 139 timo = tvtohz(&ttv); 140 } 141 /* 142 * An event of our interest may occur during locking a process. 143 * In order to avoid missing the event that occurred during locking 144 * the process, test P_SELECT and rescan file descriptors if 145 * necessary. 146 */ 147 mtx_lock_spin(&sched_lock); 148 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) { 149 mtx_unlock_spin(&sched_lock); 150 goto retry; 151 } 152 mtx_unlock_spin(&sched_lock); 153 154 if (timo > 0) 155 error = cv_timedwait(&selwait, &sellock, timo); 156 else { 157 cv_wait(&selwait, &sellock); 158 error = 0; 159 } 160 161 done: 162 clear_selinfo_list(td); 163 164 mtx_lock_spin(&sched_lock); 165 td->td_flags &= ~TDF_SELECT; 166 mtx_unlock_spin(&sched_lock); 167 mtx_unlock(&sellock); 168 169 done_noproclock: 170 if (error == ERESTART) 171 return 0; 172 return error; 173 } 174 175 static int 176 nb_intr(struct nbpcb *nbp, struct proc *p) 177 { 178 return 0; 179 } 180 181 static void 182 nb_upcall(struct socket *so, void *arg, int waitflag) 183 { 184 struct nbpcb *nbp = arg; 185 186 if (arg == NULL || nbp->nbp_selectid == NULL) 187 return; 188 wakeup(nbp->nbp_selectid); 189 } 190 191 static int 192 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len) 193 { 194 u_int32_t *p = mtod(m, u_int32_t *); 195 196 *p = htonl((len & 0x1FFFF) | (type << 24)); 197 return 0; 198 } 199 200 static int 201 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb) 202 { 203 int error; 204 u_char seglen, *cp; 205 206 cp = snb->snb_name; 207 if (*cp == 0) 208 return EINVAL; 209 NBDEBUG("[%s]\n", cp); 210 for (;;) { 211 seglen = (*cp) + 1; 212 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM); 213 if (error) 214 return error; 215 if (seglen == 1) 216 break; 217 cp += seglen; 218 } 219 return 0; 220 } 221 222 static int 223 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td) 224 { 225 struct socket *so; 226 int error, s; 227 228 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP, 229 td->td_ucred, td); 230 if (error) 231 return error; 232 nbp->nbp_tso = so; 233 so->so_upcallarg = (caddr_t)nbp; 234 so->so_upcall = nb_upcall; 235 SOCKBUF_LOCK(&so->so_rcv); 236 so->so_rcv.sb_flags |= SB_UPCALL; 237 SOCKBUF_UNLOCK(&so->so_rcv); 238 so->so_rcv.sb_timeo = (5 * hz); 239 so->so_snd.sb_timeo = (5 * hz); 240 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf); 241 if (error) 242 goto bad; 243 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1); 244 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1); 245 SOCKBUF_LOCK(&so->so_rcv); 246 so->so_rcv.sb_flags &= ~SB_NOINTR; 247 SOCKBUF_UNLOCK(&so->so_rcv); 248 SOCKBUF_LOCK(&so->so_snd); 249 so->so_snd.sb_flags &= ~SB_NOINTR; 250 SOCKBUF_UNLOCK(&so->so_snd); 251 error = soconnect(so, (struct sockaddr*)to, td); 252 if (error) 253 goto bad; 254 s = splnet(); 255 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) { 256 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz); 257 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 && 258 (error = nb_intr(nbp, td->td_proc)) != 0) { 259 so->so_state &= ~SS_ISCONNECTING; 260 splx(s); 261 goto bad; 262 } 263 } 264 if (so->so_error) { 265 error = so->so_error; 266 so->so_error = 0; 267 splx(s); 268 goto bad; 269 } 270 splx(s); 271 return 0; 272 bad: 273 smb_nbst_disconnect(nbp->nbp_vc, td); 274 return error; 275 } 276 277 static int 278 nbssn_rq_request(struct nbpcb *nbp, struct thread *td) 279 { 280 struct mbchain mb, *mbp = &mb; 281 struct mdchain md, *mdp = &md; 282 struct mbuf *m0; 283 struct timeval tv; 284 struct sockaddr_in sin; 285 u_short port; 286 u_int8_t rpcode; 287 int error, rplen; 288 289 error = mb_init(mbp); 290 if (error) 291 return error; 292 mb_put_uint32le(mbp, 0); 293 nb_put_name(mbp, nbp->nbp_paddr); 294 nb_put_name(mbp, nbp->nbp_laddr); 295 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4); 296 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td); 297 if (!error) { 298 nbp->nbp_state = NBST_RQSENT; 299 } 300 mb_detach(mbp); 301 mb_done(mbp); 302 if (error) 303 return error; 304 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo); 305 error = nbssn_rselect(nbp, &tv, POLLIN, td); 306 if (error == EWOULDBLOCK) { /* Timeout */ 307 NBDEBUG("initial request timeout\n"); 308 return ETIMEDOUT; 309 } 310 if (error) /* restart or interrupt */ 311 return error; 312 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td); 313 if (error) { 314 NBDEBUG("recv() error %d\n", error); 315 return error; 316 } 317 /* 318 * Process NETBIOS reply 319 */ 320 if (m0) 321 md_initm(mdp, m0); 322 error = 0; 323 do { 324 if (rpcode == NB_SSN_POSRESP) { 325 nbp->nbp_state = NBST_SESSION; 326 nbp->nbp_flags |= NBF_CONNECTED; 327 break; 328 } 329 if (rpcode != NB_SSN_RTGRESP) { 330 error = ECONNABORTED; 331 break; 332 } 333 if (rplen != 6) { 334 error = ECONNABORTED; 335 break; 336 } 337 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM); 338 md_get_uint16(mdp, &port); 339 sin.sin_port = port; 340 nbp->nbp_state = NBST_RETARGET; 341 smb_nbst_disconnect(nbp->nbp_vc, td); 342 error = nb_connect_in(nbp, &sin, td); 343 if (!error) 344 error = nbssn_rq_request(nbp, td); 345 if (error) { 346 smb_nbst_disconnect(nbp->nbp_vc, td); 347 break; 348 } 349 } while(0); 350 if (m0) 351 md_done(mdp); 352 return error; 353 } 354 355 static int 356 nbssn_recvhdr(struct nbpcb *nbp, int *lenp, 357 u_int8_t *rpcodep, int flags, struct thread *td) 358 { 359 struct socket *so = nbp->nbp_tso; 360 struct uio auio; 361 struct iovec aio; 362 u_int32_t len; 363 int error; 364 365 aio.iov_base = (caddr_t)&len; 366 aio.iov_len = sizeof(len); 367 auio.uio_iov = &aio; 368 auio.uio_iovcnt = 1; 369 auio.uio_segflg = UIO_SYSSPACE; 370 auio.uio_rw = UIO_READ; 371 auio.uio_offset = 0; 372 auio.uio_resid = sizeof(len); 373 auio.uio_td = td; 374 error = soreceive(so, (struct sockaddr **)NULL, &auio, 375 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags); 376 if (error) 377 return error; 378 if (auio.uio_resid > 0) { 379 SMBSDEBUG("short reply\n"); 380 return EPIPE; 381 } 382 len = ntohl(len); 383 *rpcodep = (len >> 24) & 0xFF; 384 len &= 0x1ffff; 385 if (len > SMB_MAXPKTLEN) { 386 SMBERROR("packet too long (%d)\n", len); 387 return EFBIG; 388 } 389 *lenp = len; 390 return 0; 391 } 392 393 static int 394 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp, 395 u_int8_t *rpcodep, struct thread *td) 396 { 397 struct socket *so = nbp->nbp_tso; 398 struct uio auio; 399 struct mbuf *m, *tm, *im; 400 u_int8_t rpcode; 401 int len, resid; 402 int error, rcvflg; 403 404 if (so == NULL) 405 return ENOTCONN; 406 407 if (mpp) 408 *mpp = NULL; 409 m = NULL; 410 for(;;) { 411 /* 412 * Poll for a response header. 413 * If we don't have one waiting, return. 414 */ 415 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td); 416 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) || 417 (so->so_rcv.sb_state & SBS_CANTRCVMORE)) { 418 nbp->nbp_state = NBST_CLOSED; 419 NBDEBUG("session closed by peer\n"); 420 return ECONNRESET; 421 } 422 if (error) 423 return error; 424 if (len == 0 && nbp->nbp_state != NBST_SESSION) 425 break; 426 /* no data, try again */ 427 if (rpcode == NB_SSN_KEEPALIVE) 428 continue; 429 430 /* 431 * Loop, blocking, for data following the response header. 432 * 433 * Note that we can't simply block here with MSG_WAITALL for the 434 * entire response size, as it may be larger than the TCP 435 * slow-start window that the sender employs. This will result 436 * in the sender stalling until the delayed ACK is sent, then 437 * resuming slow-start, resulting in very poor performance. 438 * 439 * Instead, we never request more than NB_SORECEIVE_CHUNK 440 * bytes at a time, resulting in an ack being pushed by 441 * the TCP code at the completion of each call. 442 */ 443 resid = len; 444 while (resid > 0) { 445 tm = NULL; 446 rcvflg = MSG_WAITALL; 447 bzero(&auio, sizeof(auio)); 448 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK); 449 auio.uio_td = td; 450 resid -= auio.uio_resid; 451 /* 452 * Spin until we have collected everything in 453 * this chunk. 454 */ 455 do { 456 rcvflg = MSG_WAITALL; 457 error = soreceive(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*)sodupsockaddr(sap, M_WAITOK); 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*)sodupsockaddr(sap, M_WAITOK); 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 }; 755 756