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: src/sys/netsmb/smb_iod.c,v 1.1.2.2 2002/04/23 03:45:01 bp Exp $ 33 * $DragonFly: src/sys/netproto/smb/smb_iod.c,v 1.7 2003/08/07 21:17:39 dillon Exp $ 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.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 "smb.h" 46 #include "smb_conn.h" 47 #include "smb_rq.h" 48 #include "smb_tran.h" 49 #include "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 66 static MALLOC_DEFINE(M_SMBIOD, "SMBIOD", "SMB network io daemon"); 67 68 static int smb_iod_next; 69 70 static int smb_iod_sendall(struct smbiod *iod); 71 static int smb_iod_disconnect(struct smbiod *iod); 72 static void smb_iod_thread(void *); 73 74 static __inline void 75 smb_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 85 static void 86 smb_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 } 102 103 static void 104 smb_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 } 115 116 static void 117 smb_iod_dead(struct smbiod *iod) 118 { 119 iod->iod_state = SMBIOD_ST_DEAD; 120 smb_iod_closetran(iod); 121 smb_iod_invrq(iod); 122 } 123 124 static int 125 smb_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 } 167 168 static int 169 smb_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 } 183 184 static int 185 smb_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 } 208 209 static int 210 smb_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 = htoles(ssp ? ssp->ss_tid : SMB_TID_UNKNOWN); 237 *rqp->sr_rquid = htoles(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_WAIT); 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 */ 277 static int 278 smb_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_proc_intr(rqp->sr_cred->scr_td)) { 360 smb_iod_rqprocessed(rqp, EINTR); 361 } 362 } 363 SMB_IOD_RQUNLOCK(iod); 364 return 0; 365 } 366 367 int 368 smb_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 smb_sleep(evp, SMB_IOD_EVLOCKPTR(iod), 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 */ 395 int 396 smb_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 == iod->iod_td) { 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, 0, "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 smb_sleep(&iod->iod_muxwant, SMB_IOD_RQLOCKPTR(iod), 447 0, "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 } 455 456 int 457 smb_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 smb_sleep(rqp, SMB_IOD_RQLOCKPTR(iod), 0, "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 } 483 484 int 485 smb_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, 0, "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 smb_sleep(&rqp->sr_state, SMBRQ_SLOCKPTR(rqp), 0, "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 } 522 523 524 static int 525 smb_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 } 561 if (herror) 562 break; 563 } 564 SMB_IOD_RQUNLOCK(iod); 565 if (herror == ENOTCONN) 566 smb_iod_dead(iod); 567 return 0; 568 } 569 570 /* 571 * "main" function for smbiod daemon 572 */ 573 static __inline void 574 smb_iod_main(struct smbiod *iod) 575 { 576 /* struct smb_vc *vcp = iod->iod_vc;*/ 577 struct smbiod_event *evp; 578 /* struct timespec tsnow;*/ 579 int error; 580 581 SMBIODEBUG("\n"); 582 error = 0; 583 584 /* 585 * Check all interesting events 586 */ 587 for (;;) { 588 SMB_IOD_EVLOCK(iod); 589 evp = STAILQ_FIRST(&iod->iod_evlist); 590 if (evp == NULL) { 591 SMB_IOD_EVUNLOCK(iod); 592 break; 593 } 594 STAILQ_REMOVE_HEAD(&iod->iod_evlist, ev_link); 595 evp->ev_type |= SMBIOD_EV_PROCESSING; 596 SMB_IOD_EVUNLOCK(iod); 597 switch (evp->ev_type & SMBIOD_EV_MASK) { 598 case SMBIOD_EV_CONNECT: 599 iod->iod_state = SMBIOD_ST_RECONNECT; 600 evp->ev_error = smb_iod_connect(iod); 601 break; 602 case SMBIOD_EV_DISCONNECT: 603 evp->ev_error = smb_iod_disconnect(iod); 604 break; 605 case SMBIOD_EV_TREECONNECT: 606 evp->ev_error = smb_iod_treeconnect(iod, evp->ev_ident); 607 break; 608 case SMBIOD_EV_SHUTDOWN: 609 iod->iod_flags |= SMBIOD_SHUTDOWN; 610 break; 611 case SMBIOD_EV_NEWRQ: 612 break; 613 } 614 if (evp->ev_type & SMBIOD_EV_SYNC) { 615 SMB_IOD_EVLOCK(iod); 616 wakeup(evp); 617 SMB_IOD_EVUNLOCK(iod); 618 } else 619 free(evp, M_SMBIOD); 620 } 621 #if 0 622 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 623 getnanotime(&tsnow); 624 timespecsub(&tsnow, &iod->iod_pingtimo); 625 if (timespeccmp(&tsnow, &iod->iod_lastrqsent, >)) { 626 smb_smb_echo(vcp, &iod->iod_scred); 627 } 628 } 629 #endif 630 smb_iod_sendall(iod); 631 smb_iod_recvall(iod); 632 return; 633 } 634 635 #define kthread_create_compat kthread_create2 636 637 638 void 639 smb_iod_thread(void *arg) 640 { 641 struct smbiod *iod = arg; 642 643 smb_makescred(&iod->iod_scred, iod->iod_td, NULL); 644 while ((iod->iod_flags & SMBIOD_SHUTDOWN) == 0) { 645 smb_iod_main(iod); 646 SMBIODEBUG("going to sleep for %d ticks\n", iod->iod_sleeptimo); 647 if (iod->iod_flags & SMBIOD_SHUTDOWN) 648 break; 649 tsleep(&iod->iod_flags, 0, "90idle", iod->iod_sleeptimo); 650 } 651 kthread_exit(); 652 } 653 654 int 655 smb_iod_create(struct smb_vc *vcp) 656 { 657 struct smbiod *iod; 658 struct proc *newp = NULL; 659 int error; 660 661 iod = smb_zmalloc(sizeof(*iod), M_SMBIOD, M_WAITOK); 662 iod->iod_id = smb_iod_next++; 663 iod->iod_state = SMBIOD_ST_NOTCONN; 664 iod->iod_vc = vcp; 665 iod->iod_sleeptimo = hz * SMBIOD_SLEEP_TIMO; 666 iod->iod_pingtimo.tv_sec = SMBIOD_PING_TIMO; 667 getnanotime(&iod->iod_lastrqsent); 668 vcp->vc_iod = iod; 669 smb_sl_init(&iod->iod_rqlock, "90rql"); 670 TAILQ_INIT(&iod->iod_rqlist); 671 smb_sl_init(&iod->iod_evlock, "90evl"); 672 STAILQ_INIT(&iod->iod_evlist); 673 error = kthread_create_compat(smb_iod_thread, iod, &newp, 674 RFNOWAIT, "smbiod%d", iod->iod_id); 675 if (error) { 676 SMBERROR("can't start smbiod: %d", error); 677 free(iod, M_SMBIOD); 678 return error; 679 } 680 iod->iod_td = newp->p_thread; 681 return 0; 682 } 683 684 int 685 smb_iod_destroy(struct smbiod *iod) 686 { 687 smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL); 688 smb_sl_destroy(&iod->iod_rqlock); 689 smb_sl_destroy(&iod->iod_evlock); 690 free(iod, M_SMBIOD); 691 return 0; 692 } 693 694 int 695 smb_iod_init(void) 696 { 697 return 0; 698 } 699 700 int 701 smb_iod_done(void) 702 { 703 return 0; 704 } 705 706