smb_iod.c revision 112888
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: head/sys/netsmb/smb_iod.c 112888 2003-03-31 22:49:17Z jeff $ 33 */ 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/endian.h> 38#include <sys/proc.h> 39#include <sys/kernel.h> 40#include <sys/kthread.h> 41#include <sys/malloc.h> 42#include <sys/mbuf.h> 43#include <sys/unistd.h> 44 45#include <netsmb/smb.h> 46#include <netsmb/smb_conn.h> 47#include <netsmb/smb_rq.h> 48#include <netsmb/smb_tran.h> 49#include <netsmb/smb_trantcp.h> 50 51 52#define SMBIOD_SLEEP_TIMO 2 53#define SMBIOD_PING_TIMO 60 /* seconds */ 54 55#define SMB_IOD_EVLOCKPTR(iod) (&((iod)->iod_evlock)) 56#define SMB_IOD_EVLOCK(iod) smb_sl_lock(&((iod)->iod_evlock)) 57#define SMB_IOD_EVUNLOCK(iod) smb_sl_unlock(&((iod)->iod_evlock)) 58 59#define SMB_IOD_RQLOCKPTR(iod) (&((iod)->iod_rqlock)) 60#define SMB_IOD_RQLOCK(iod) smb_sl_lock(&((iod)->iod_rqlock)) 61#define SMB_IOD_RQUNLOCK(iod) smb_sl_unlock(&((iod)->iod_rqlock)) 62 63#define smb_iod_wakeup(iod) wakeup(&(iod)->iod_flags) 64 65 66static MALLOC_DEFINE(M_SMBIOD, "SMBIOD", "SMB network io daemon"); 67 68static int smb_iod_next; 69 70static int smb_iod_sendall(struct smbiod *iod); 71static int smb_iod_disconnect(struct smbiod *iod); 72static void smb_iod_thread(void *); 73 74static __inline void 75smb_iod_rqprocessed(struct smb_rq *rqp, int error) 76{ 77 SMBRQ_SLOCK(rqp); 78 rqp->sr_lerror = error; 79 rqp->sr_rpgen++; 80 rqp->sr_state = SMBRQ_NOTIFIED; 81 wakeup(&rqp->sr_state); 82 SMBRQ_SUNLOCK(rqp); 83} 84 85static void 86smb_iod_invrq(struct smbiod *iod) 87{ 88 struct smb_rq *rqp; 89 90 /* 91 * Invalidate all outstanding requests for this connection 92 */ 93 SMB_IOD_RQLOCK(iod); 94 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 95 if (rqp->sr_flags & SMBR_INTERNAL) 96 SMBRQ_SUNLOCK(rqp); 97 rqp->sr_flags |= SMBR_RESTART; 98 smb_iod_rqprocessed(rqp, ENOTCONN); 99 } 100 SMB_IOD_RQUNLOCK(iod); 101} 102 103static void 104smb_iod_closetran(struct smbiod *iod) 105{ 106 struct smb_vc *vcp = iod->iod_vc; 107 struct thread *td = iod->iod_td; 108 109 if (vcp->vc_tdata == NULL) 110 return; 111 SMB_TRAN_DISCONNECT(vcp, td); 112 SMB_TRAN_DONE(vcp, td); 113 vcp->vc_tdata = NULL; 114} 115 116static void 117smb_iod_dead(struct smbiod *iod) 118{ 119 iod->iod_state = SMBIOD_ST_DEAD; 120 smb_iod_closetran(iod); 121 smb_iod_invrq(iod); 122} 123 124static int 125smb_iod_connect(struct smbiod *iod) 126{ 127 struct smb_vc *vcp = iod->iod_vc; 128 struct thread *td = iod->iod_td; 129 int error; 130 131 SMBIODEBUG("%d\n", iod->iod_state); 132 switch(iod->iod_state) { 133 case SMBIOD_ST_VCACTIVE: 134 SMBERROR("called for already opened connection\n"); 135 return EISCONN; 136 case SMBIOD_ST_DEAD: 137 return ENOTCONN; /* XXX: last error code ? */ 138 default: 139 break; 140 } 141 vcp->vc_genid++; 142 error = 0; 143 itry { 144 ithrow(SMB_TRAN_CREATE(vcp, td)); 145 SMBIODEBUG("tcreate\n"); 146 if (vcp->vc_laddr) { 147 ithrow(SMB_TRAN_BIND(vcp, vcp->vc_laddr, td)); 148 } 149 SMBIODEBUG("tbind\n"); 150 ithrow(SMB_TRAN_CONNECT(vcp, vcp->vc_paddr, td)); 151 SMB_TRAN_SETPARAM(vcp, SMBTP_SELECTID, &iod->iod_flags); 152 iod->iod_state = SMBIOD_ST_TRANACTIVE; 153 SMBIODEBUG("tconnect\n"); 154/* vcp->vc_mid = 0;*/ 155 ithrow(smb_smb_negotiate(vcp, &iod->iod_scred)); 156 SMBIODEBUG("snegotiate\n"); 157 ithrow(smb_smb_ssnsetup(vcp, &iod->iod_scred)); 158 iod->iod_state = SMBIOD_ST_VCACTIVE; 159 SMBIODEBUG("completed\n"); 160 smb_iod_invrq(iod); 161 } icatch(error) { 162 smb_iod_dead(iod); 163 } ifinally { 164 } iendtry; 165 return error; 166} 167 168static int 169smb_iod_disconnect(struct smbiod *iod) 170{ 171 struct smb_vc *vcp = iod->iod_vc; 172 173 SMBIODEBUG("\n"); 174 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 175 smb_smb_ssnclose(vcp, &iod->iod_scred); 176 iod->iod_state = SMBIOD_ST_TRANACTIVE; 177 } 178 vcp->vc_smbuid = SMB_UID_UNKNOWN; 179 smb_iod_closetran(iod); 180 iod->iod_state = SMBIOD_ST_NOTCONN; 181 return 0; 182} 183 184static int 185smb_iod_treeconnect(struct smbiod *iod, struct smb_share *ssp) 186{ 187 int error; 188 189 if (iod->iod_state != SMBIOD_ST_VCACTIVE) { 190 if (iod->iod_state != SMBIOD_ST_DEAD) 191 return ENOTCONN; 192 iod->iod_state = SMBIOD_ST_RECONNECT; 193 error = smb_iod_connect(iod); 194 if (error) 195 return error; 196 } 197 SMBIODEBUG("tree reconnect\n"); 198 SMBS_ST_LOCK(ssp); 199 ssp->ss_flags |= SMBS_RECONNECTING; 200 SMBS_ST_UNLOCK(ssp); 201 error = smb_smb_treeconnect(ssp, &iod->iod_scred); 202 SMBS_ST_LOCK(ssp); 203 ssp->ss_flags &= ~SMBS_RECONNECTING; 204 SMBS_ST_UNLOCK(ssp); 205 wakeup(&ssp->ss_vcgenid); 206 return error; 207} 208 209static int 210smb_iod_sendrq(struct smbiod *iod, struct smb_rq *rqp) 211{ 212 struct thread *td = iod->iod_td; 213 struct smb_vc *vcp = iod->iod_vc; 214 struct smb_share *ssp = rqp->sr_share; 215 struct mbuf *m; 216 int error; 217 218 SMBIODEBUG("iod_state = %d\n", iod->iod_state); 219 switch (iod->iod_state) { 220 case SMBIOD_ST_NOTCONN: 221 smb_iod_rqprocessed(rqp, ENOTCONN); 222 return 0; 223 case SMBIOD_ST_DEAD: 224 iod->iod_state = SMBIOD_ST_RECONNECT; 225 return 0; 226 case SMBIOD_ST_RECONNECT: 227 return 0; 228 default: 229 break; 230 } 231 if (rqp->sr_sendcnt == 0) { 232#ifdef movedtoanotherplace 233 if (vcp->vc_maxmux != 0 && iod->iod_muxcnt >= vcp->vc_maxmux) 234 return 0; 235#endif 236 *rqp->sr_rqtid = htole16(ssp ? ssp->ss_tid : SMB_TID_UNKNOWN); 237 *rqp->sr_rquid = htole16(vcp ? vcp->vc_smbuid : 0); 238 mb_fixhdr(&rqp->sr_rq); 239 } 240 if (rqp->sr_sendcnt++ > 5) { 241 rqp->sr_flags |= SMBR_RESTART; 242 smb_iod_rqprocessed(rqp, rqp->sr_lerror); 243 /* 244 * If all attempts to send a request failed, then 245 * something is seriously hosed. 246 */ 247 return ENOTCONN; 248 } 249 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x\n", rqp->sr_mid, 0, 0, 0); 250 m_dumpm(rqp->sr_rq.mb_top); 251 m = m_copym(rqp->sr_rq.mb_top, 0, M_COPYALL, M_TRYWAIT); 252 error = rqp->sr_lerror = m ? SMB_TRAN_SEND(vcp, m, td) : ENOBUFS; 253 if (error == 0) { 254 getnanotime(&rqp->sr_timesent); 255 iod->iod_lastrqsent = rqp->sr_timesent; 256 rqp->sr_flags |= SMBR_SENT; 257 rqp->sr_state = SMBRQ_SENT; 258 return 0; 259 } 260 /* 261 * Check for fatal errors 262 */ 263 if (SMB_TRAN_FATAL(vcp, error)) { 264 /* 265 * No further attempts should be made 266 */ 267 return ENOTCONN; 268 } 269 if (smb_rq_intr(rqp)) 270 smb_iod_rqprocessed(rqp, EINTR); 271 return 0; 272} 273 274/* 275 * Process incoming packets 276 */ 277static int 278smb_iod_recvall(struct smbiod *iod) 279{ 280 struct smb_vc *vcp = iod->iod_vc; 281 struct thread *td = iod->iod_td; 282 struct smb_rq *rqp; 283 struct mbuf *m; 284 u_char *hp; 285 u_short mid; 286 int error; 287 288 switch (iod->iod_state) { 289 case SMBIOD_ST_NOTCONN: 290 case SMBIOD_ST_DEAD: 291 case SMBIOD_ST_RECONNECT: 292 return 0; 293 default: 294 break; 295 } 296 for (;;) { 297 m = NULL; 298 error = SMB_TRAN_RECV(vcp, &m, td); 299 if (error == EWOULDBLOCK) 300 break; 301 if (SMB_TRAN_FATAL(vcp, error)) { 302 smb_iod_dead(iod); 303 break; 304 } 305 if (error) 306 break; 307 if (m == NULL) { 308 SMBERROR("tran return NULL without error\n"); 309 error = EPIPE; 310 continue; 311 } 312 m = m_pullup(m, SMB_HDRLEN); 313 if (m == NULL) 314 continue; /* wait for a good packet */ 315 /* 316 * Now we got an entire and possibly invalid SMB packet. 317 * Be careful while parsing it. 318 */ 319 m_dumpm(m); 320 hp = mtod(m, u_char*); 321 if (bcmp(hp, SMB_SIGNATURE, SMB_SIGLEN) != 0) { 322 m_freem(m); 323 continue; 324 } 325 mid = SMB_HDRMID(hp); 326 SMBSDEBUG("mid %04x\n", (u_int)mid); 327 SMB_IOD_RQLOCK(iod); 328 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 329 if (rqp->sr_mid != mid) 330 continue; 331 SMBRQ_SLOCK(rqp); 332 if (rqp->sr_rp.md_top == NULL) { 333 md_initm(&rqp->sr_rp, m); 334 } else { 335 if (rqp->sr_flags & SMBR_MULTIPACKET) { 336 md_append_record(&rqp->sr_rp, m); 337 } else { 338 SMBRQ_SUNLOCK(rqp); 339 SMBERROR("duplicate response %d (ignored)\n", mid); 340 break; 341 } 342 } 343 SMBRQ_SUNLOCK(rqp); 344 smb_iod_rqprocessed(rqp, 0); 345 break; 346 } 347 SMB_IOD_RQUNLOCK(iod); 348 if (rqp == NULL) { 349 SMBERROR("drop resp with mid %d\n", (u_int)mid); 350/* smb_printrqlist(vcp);*/ 351 m_freem(m); 352 } 353 } 354 /* 355 * check for interrupts 356 */ 357 SMB_IOD_RQLOCK(iod); 358 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 359 if (smb_td_intr(rqp->sr_cred->scr_td)) { 360 smb_iod_rqprocessed(rqp, EINTR); 361 } 362 } 363 SMB_IOD_RQUNLOCK(iod); 364 return 0; 365} 366 367int 368smb_iod_request(struct smbiod *iod, int event, void *ident) 369{ 370 struct smbiod_event *evp; 371 int error; 372 373 SMBIODEBUG("\n"); 374 evp = smb_zmalloc(sizeof(*evp), M_SMBIOD, M_WAITOK); 375 evp->ev_type = event; 376 evp->ev_ident = ident; 377 SMB_IOD_EVLOCK(iod); 378 STAILQ_INSERT_TAIL(&iod->iod_evlist, evp, ev_link); 379 if ((event & SMBIOD_EV_SYNC) == 0) { 380 SMB_IOD_EVUNLOCK(iod); 381 smb_iod_wakeup(iod); 382 return 0; 383 } 384 smb_iod_wakeup(iod); 385 msleep(evp, SMB_IOD_EVLOCKPTR(iod), PWAIT | PDROP, "90evw", 0); 386 error = evp->ev_error; 387 free(evp, M_SMBIOD); 388 return error; 389} 390 391/* 392 * Place request in the queue. 393 * Request from smbiod have a high priority. 394 */ 395int 396smb_iod_addrq(struct smb_rq *rqp) 397{ 398 struct smb_vc *vcp = rqp->sr_vc; 399 struct smbiod *iod = vcp->vc_iod; 400 int error; 401 402 SMBIODEBUG("\n"); 403 if (rqp->sr_cred->scr_td->td_proc == iod->iod_p) { 404 rqp->sr_flags |= SMBR_INTERNAL; 405 SMB_IOD_RQLOCK(iod); 406 TAILQ_INSERT_HEAD(&iod->iod_rqlist, rqp, sr_link); 407 SMB_IOD_RQUNLOCK(iod); 408 for (;;) { 409 if (smb_iod_sendrq(iod, rqp) != 0) { 410 smb_iod_dead(iod); 411 break; 412 } 413 /* 414 * we don't need to lock state field here 415 */ 416 if (rqp->sr_state != SMBRQ_NOTSENT) 417 break; 418 tsleep(&iod->iod_flags, PWAIT, "90sndw", hz); 419 } 420 if (rqp->sr_lerror) 421 smb_iod_removerq(rqp); 422 return rqp->sr_lerror; 423 } 424 425 switch (iod->iod_state) { 426 case SMBIOD_ST_NOTCONN: 427 return ENOTCONN; 428 case SMBIOD_ST_DEAD: 429 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL); 430 if (error) 431 return error; 432 return EXDEV; 433 default: 434 break; 435 } 436 437 SMB_IOD_RQLOCK(iod); 438 for (;;) { 439 if (vcp->vc_maxmux == 0) { 440 SMBERROR("maxmux == 0\n"); 441 break; 442 } 443 if (iod->iod_muxcnt < vcp->vc_maxmux) 444 break; 445 iod->iod_muxwant++; 446 msleep(&iod->iod_muxwant, SMB_IOD_RQLOCKPTR(iod), 447 PWAIT, "90mux", 0); 448 } 449 iod->iod_muxcnt++; 450 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 451 SMB_IOD_RQUNLOCK(iod); 452 smb_iod_wakeup(iod); 453 return 0; 454} 455 456int 457smb_iod_removerq(struct smb_rq *rqp) 458{ 459 struct smb_vc *vcp = rqp->sr_vc; 460 struct smbiod *iod = vcp->vc_iod; 461 462 SMBIODEBUG("\n"); 463 if (rqp->sr_flags & SMBR_INTERNAL) { 464 SMB_IOD_RQLOCK(iod); 465 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 466 SMB_IOD_RQUNLOCK(iod); 467 return 0; 468 } 469 SMB_IOD_RQLOCK(iod); 470 while (rqp->sr_flags & SMBR_XLOCK) { 471 rqp->sr_flags |= SMBR_XLOCKWANT; 472 msleep(rqp, SMB_IOD_RQLOCKPTR(iod), PWAIT, "90xrm", 0); 473 } 474 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 475 iod->iod_muxcnt--; 476 if (iod->iod_muxwant) { 477 iod->iod_muxwant--; 478 wakeup(&iod->iod_muxwant); 479 } 480 SMB_IOD_RQUNLOCK(iod); 481 return 0; 482} 483 484int 485smb_iod_waitrq(struct smb_rq *rqp) 486{ 487 struct smbiod *iod = rqp->sr_vc->vc_iod; 488 int error; 489 490 SMBIODEBUG("\n"); 491 if (rqp->sr_flags & SMBR_INTERNAL) { 492 for (;;) { 493 smb_iod_sendall(iod); 494 smb_iod_recvall(iod); 495 if (rqp->sr_rpgen != rqp->sr_rplast) 496 break; 497 tsleep(&iod->iod_flags, PWAIT, "90irq", hz); 498 } 499 smb_iod_removerq(rqp); 500 return rqp->sr_lerror; 501 502 } 503 SMBRQ_SLOCK(rqp); 504 if (rqp->sr_rpgen == rqp->sr_rplast) 505 msleep(&rqp->sr_state, SMBRQ_SLOCKPTR(rqp), PWAIT, "90wrq", 0); 506 rqp->sr_rplast++; 507 SMBRQ_SUNLOCK(rqp); 508 error = rqp->sr_lerror; 509 if (rqp->sr_flags & SMBR_MULTIPACKET) { 510 /* 511 * If request should stay in the list, then reinsert it 512 * at the end of queue so other waiters have chance to concur 513 */ 514 SMB_IOD_RQLOCK(iod); 515 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 516 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 517 SMB_IOD_RQUNLOCK(iod); 518 } else 519 smb_iod_removerq(rqp); 520 return error; 521} 522 523 524static int 525smb_iod_sendall(struct smbiod *iod) 526{ 527 struct smb_vc *vcp = iod->iod_vc; 528 struct smb_rq *rqp; 529 struct timespec ts, tstimeout; 530 int herror; 531 532 herror = 0; 533 /* 534 * Loop through the list of requests and send them if possible 535 */ 536 SMB_IOD_RQLOCK(iod); 537 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 538 switch (rqp->sr_state) { 539 case SMBRQ_NOTSENT: 540 rqp->sr_flags |= SMBR_XLOCK; 541 SMB_IOD_RQUNLOCK(iod); 542 herror = smb_iod_sendrq(iod, rqp); 543 SMB_IOD_RQLOCK(iod); 544 rqp->sr_flags &= ~SMBR_XLOCK; 545 if (rqp->sr_flags & SMBR_XLOCKWANT) { 546 rqp->sr_flags &= ~SMBR_XLOCKWANT; 547 wakeup(rqp); 548 } 549 break; 550 case SMBRQ_SENT: 551 SMB_TRAN_GETPARAM(vcp, SMBTP_TIMEOUT, &tstimeout); 552 timespecadd(&tstimeout, &tstimeout); 553 getnanotime(&ts); 554 timespecsub(&ts, &tstimeout); 555 if (timespeccmp(&ts, &rqp->sr_timesent, >)) { 556 smb_iod_rqprocessed(rqp, ETIMEDOUT); 557 } 558 break; 559 default: 560 break; 561 } 562 if (herror) 563 break; 564 } 565 SMB_IOD_RQUNLOCK(iod); 566 if (herror == ENOTCONN) 567 smb_iod_dead(iod); 568 return 0; 569} 570 571/* 572 * "main" function for smbiod daemon 573 */ 574static __inline void 575smb_iod_main(struct smbiod *iod) 576{ 577/* struct smb_vc *vcp = iod->iod_vc;*/ 578 struct smbiod_event *evp; 579/* struct timespec tsnow;*/ 580 int error; 581 582 SMBIODEBUG("\n"); 583 error = 0; 584 585 /* 586 * Check all interesting events 587 */ 588 for (;;) { 589 SMB_IOD_EVLOCK(iod); 590 evp = STAILQ_FIRST(&iod->iod_evlist); 591 if (evp == NULL) { 592 SMB_IOD_EVUNLOCK(iod); 593 break; 594 } 595 STAILQ_REMOVE_HEAD(&iod->iod_evlist, ev_link); 596 evp->ev_type |= SMBIOD_EV_PROCESSING; 597 SMB_IOD_EVUNLOCK(iod); 598 switch (evp->ev_type & SMBIOD_EV_MASK) { 599 case SMBIOD_EV_CONNECT: 600 iod->iod_state = SMBIOD_ST_RECONNECT; 601 evp->ev_error = smb_iod_connect(iod); 602 break; 603 case SMBIOD_EV_DISCONNECT: 604 evp->ev_error = smb_iod_disconnect(iod); 605 break; 606 case SMBIOD_EV_TREECONNECT: 607 evp->ev_error = smb_iod_treeconnect(iod, evp->ev_ident); 608 break; 609 case SMBIOD_EV_SHUTDOWN: 610 iod->iod_flags |= SMBIOD_SHUTDOWN; 611 break; 612 case SMBIOD_EV_NEWRQ: 613 break; 614 } 615 if (evp->ev_type & SMBIOD_EV_SYNC) { 616 SMB_IOD_EVLOCK(iod); 617 wakeup(evp); 618 SMB_IOD_EVUNLOCK(iod); 619 } else 620 free(evp, M_SMBIOD); 621 } 622#if 0 623 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 624 getnanotime(&tsnow); 625 timespecsub(&tsnow, &iod->iod_pingtimo); 626 if (timespeccmp(&tsnow, &iod->iod_lastrqsent, >)) { 627 smb_smb_echo(vcp, &iod->iod_scred); 628 } 629 } 630#endif 631 smb_iod_sendall(iod); 632 smb_iod_recvall(iod); 633 return; 634} 635 636void 637smb_iod_thread(void *arg) 638{ 639 struct smbiod *iod = arg; 640 641 mtx_lock(&Giant); 642 /* 643 * Here we assume that the thread structure will be the same 644 * for an entire kthread (kproc, to be more precise) life. 645 */ 646 iod->iod_td = curthread; 647 smb_makescred(&iod->iod_scred, iod->iod_td, NULL); 648 while ((iod->iod_flags & SMBIOD_SHUTDOWN) == 0) { 649 smb_iod_main(iod); 650 SMBIODEBUG("going to sleep for %d ticks\n", iod->iod_sleeptimo); 651/* mtx_unlock(&Giant, MTX_DEF);*/ 652 if (iod->iod_flags & SMBIOD_SHUTDOWN) 653 break; 654 tsleep(&iod->iod_flags, PWAIT, "90idle", iod->iod_sleeptimo); 655 } 656/* mtx_lock(&Giant, MTX_DEF);*/ 657 kthread_exit(0); 658} 659 660int 661smb_iod_create(struct smb_vc *vcp) 662{ 663 struct smbiod *iod; 664 int error; 665 666 iod = smb_zmalloc(sizeof(*iod), M_SMBIOD, M_WAITOK); 667 iod->iod_id = smb_iod_next++; 668 iod->iod_state = SMBIOD_ST_NOTCONN; 669 iod->iod_vc = vcp; 670 iod->iod_sleeptimo = hz * SMBIOD_SLEEP_TIMO; 671 iod->iod_pingtimo.tv_sec = SMBIOD_PING_TIMO; 672 getnanotime(&iod->iod_lastrqsent); 673 vcp->vc_iod = iod; 674 smb_sl_init(&iod->iod_rqlock, "90rql"); 675 TAILQ_INIT(&iod->iod_rqlist); 676 smb_sl_init(&iod->iod_evlock, "90evl"); 677 STAILQ_INIT(&iod->iod_evlist); 678 error = kthread_create(smb_iod_thread, iod, &iod->iod_p, 679 RFNOWAIT, 0, "smbiod%d", iod->iod_id); 680 if (error) { 681 SMBERROR("can't start smbiod: %d", error); 682 free(iod, M_SMBIOD); 683 return error; 684 } 685 return 0; 686} 687 688int 689smb_iod_destroy(struct smbiod *iod) 690{ 691 smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL); 692 smb_sl_destroy(&iod->iod_rqlock); 693 smb_sl_destroy(&iod->iod_evlock); 694 free(iod, M_SMBIOD); 695 return 0; 696} 697 698int 699smb_iod_init(void) 700{ 701 return 0; 702} 703 704int 705smb_iod_done(void) 706{ 707 return 0; 708} 709 710