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) (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 }; 763 764