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 1.15 2007/02/03 17:05:58 corecode 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 <sys/mplock2.h> 46 47 #include "smb.h" 48 #include "smb_conn.h" 49 #include "smb_rq.h" 50 #include "smb_tran.h" 51 #include "smb_trantcp.h" 52 53 54 #define SMBIOD_SLEEP_TIMO 2 55 #define SMBIOD_PING_TIMO 60 /* seconds */ 56 57 #define SMB_IOD_EVLOCKPTR(iod) (&(iod)->iod_evlock) 58 #define SMB_IOD_EVLOCK(iod) smb_sl_lock(&(iod)->iod_evlock) 59 #define SMB_IOD_EVUNLOCK(iod) smb_sl_unlock(&(iod)->iod_evlock) 60 #define SMB_IOD_EVINTERLOCK(iod) (&(iod)->iod_evlock) 61 62 #define SMB_IOD_RQLOCKPTR(iod) (&(iod)->iod_rqlock) 63 #define SMB_IOD_RQLOCK(iod) smb_sl_lock(&((iod)->iod_rqlock)) 64 #define SMB_IOD_RQUNLOCK(iod) smb_sl_unlock(&(iod)->iod_rqlock) 65 #define SMB_IOD_RQINTERLOCK(iod) (&(iod)->iod_rqlock) 66 67 #define smb_iod_wakeup(iod) wakeup(&(iod)->iod_flags) 68 69 70 static MALLOC_DEFINE(M_SMBIOD, "SMBIOD", "SMB network io daemon"); 71 72 static int smb_iod_next; 73 74 static int smb_iod_sendall(struct smbiod *iod); 75 static int smb_iod_disconnect(struct smbiod *iod); 76 static void smb_iod_thread(void *); 77 78 static __inline void 79 smb_iod_rqprocessed(struct smb_rq *rqp, int error) 80 { 81 SMBRQ_SLOCK(rqp); 82 rqp->sr_lerror = error; 83 rqp->sr_rpgen++; 84 rqp->sr_state = SMBRQ_NOTIFIED; 85 wakeup(&rqp->sr_state); 86 SMBRQ_SUNLOCK(rqp); 87 } 88 89 static void 90 smb_iod_invrq(struct smbiod *iod) 91 { 92 struct smb_rq *rqp; 93 94 /* 95 * Invalidate all outstanding requests for this connection 96 */ 97 SMB_IOD_RQLOCK(iod); 98 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 99 #if 0 100 /* this makes no sense whatsoever XXX */ 101 if (rqp->sr_flags & SMBR_INTERNAL) 102 SMBRQ_SUNLOCK(rqp); 103 #endif 104 rqp->sr_flags |= SMBR_RESTART; 105 smb_iod_rqprocessed(rqp, ENOTCONN); 106 } 107 SMB_IOD_RQUNLOCK(iod); 108 } 109 110 static void 111 smb_iod_closetran(struct smbiod *iod) 112 { 113 struct smb_vc *vcp = iod->iod_vc; 114 struct thread *td = iod->iod_td; 115 116 if (vcp->vc_tdata == NULL) 117 return; 118 SMB_TRAN_DISCONNECT(vcp, td); 119 SMB_TRAN_DONE(vcp, td); 120 vcp->vc_tdata = NULL; 121 } 122 123 static void 124 smb_iod_dead(struct smbiod *iod) 125 { 126 iod->iod_state = SMBIOD_ST_DEAD; 127 smb_iod_closetran(iod); 128 smb_iod_invrq(iod); 129 } 130 131 static int 132 smb_iod_connect(struct smbiod *iod) 133 { 134 struct smb_vc *vcp = iod->iod_vc; 135 struct thread *td = iod->iod_td; 136 int error; 137 138 SMBIODEBUG("%d\n", iod->iod_state); 139 switch(iod->iod_state) { 140 case SMBIOD_ST_VCACTIVE: 141 SMBERROR("called for already opened connection\n"); 142 return EISCONN; 143 case SMBIOD_ST_DEAD: 144 return ENOTCONN; /* XXX: last error code ? */ 145 default: 146 break; 147 } 148 vcp->vc_genid++; 149 error = 0; 150 itry { 151 ithrow(SMB_TRAN_CREATE(vcp, td)); 152 SMBIODEBUG("tcreate\n"); 153 if (vcp->vc_laddr) { 154 ithrow(SMB_TRAN_BIND(vcp, vcp->vc_laddr, td)); 155 } 156 SMBIODEBUG("tbind\n"); 157 ithrow(SMB_TRAN_CONNECT(vcp, vcp->vc_paddr, td)); 158 SMB_TRAN_SETPARAM(vcp, SMBTP_SELECTID, &iod->iod_flags); 159 iod->iod_state = SMBIOD_ST_TRANACTIVE; 160 SMBIODEBUG("tconnect\n"); 161 /* vcp->vc_mid = 0;*/ 162 ithrow(smb_smb_negotiate(vcp, &iod->iod_scred)); 163 SMBIODEBUG("snegotiate\n"); 164 ithrow(smb_smb_ssnsetup(vcp, &iod->iod_scred)); 165 iod->iod_state = SMBIOD_ST_VCACTIVE; 166 SMBIODEBUG("completed\n"); 167 smb_iod_invrq(iod); 168 } icatch(error) { 169 smb_iod_dead(iod); 170 } ifinally { 171 } iendtry; 172 return error; 173 } 174 175 static int 176 smb_iod_disconnect(struct smbiod *iod) 177 { 178 struct smb_vc *vcp = iod->iod_vc; 179 180 SMBIODEBUG("\n"); 181 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 182 smb_smb_ssnclose(vcp, &iod->iod_scred); 183 iod->iod_state = SMBIOD_ST_TRANACTIVE; 184 } 185 vcp->vc_smbuid = SMB_UID_UNKNOWN; 186 smb_iod_closetran(iod); 187 iod->iod_state = SMBIOD_ST_NOTCONN; 188 return 0; 189 } 190 191 static int 192 smb_iod_treeconnect(struct smbiod *iod, struct smb_share *ssp) 193 { 194 int error; 195 196 if (iod->iod_state != SMBIOD_ST_VCACTIVE) { 197 if (iod->iod_state != SMBIOD_ST_DEAD) 198 return ENOTCONN; 199 iod->iod_state = SMBIOD_ST_RECONNECT; 200 error = smb_iod_connect(iod); 201 if (error) 202 return error; 203 } 204 SMBIODEBUG("tree reconnect\n"); 205 SMBS_ST_LOCK(ssp); 206 ssp->ss_flags |= SMBS_RECONNECTING; 207 SMBS_ST_UNLOCK(ssp); 208 error = smb_smb_treeconnect(ssp, &iod->iod_scred); 209 SMBS_ST_LOCK(ssp); 210 ssp->ss_flags &= ~SMBS_RECONNECTING; 211 SMBS_ST_UNLOCK(ssp); 212 wakeup(&ssp->ss_vcgenid); 213 return error; 214 } 215 216 static int 217 smb_iod_sendrq(struct smbiod *iod, struct smb_rq *rqp) 218 { 219 struct thread *td = iod->iod_td; 220 struct smb_vc *vcp = iod->iod_vc; 221 struct smb_share *ssp = rqp->sr_share; 222 struct mbuf *m; 223 int error; 224 225 SMBIODEBUG("iod_state = %d\n", iod->iod_state); 226 switch (iod->iod_state) { 227 case SMBIOD_ST_NOTCONN: 228 smb_iod_rqprocessed(rqp, ENOTCONN); 229 return 0; 230 case SMBIOD_ST_DEAD: 231 iod->iod_state = SMBIOD_ST_RECONNECT; 232 return 0; 233 case SMBIOD_ST_RECONNECT: 234 return 0; 235 default: 236 break; 237 } 238 if (rqp->sr_sendcnt == 0) { 239 #ifdef movedtoanotherplace 240 if (vcp->vc_maxmux != 0 && iod->iod_muxcnt >= vcp->vc_maxmux) 241 return 0; 242 #endif 243 *rqp->sr_rqtid = htoles(ssp ? ssp->ss_tid : SMB_TID_UNKNOWN); 244 *rqp->sr_rquid = htoles(vcp ? vcp->vc_smbuid : 0); 245 mb_fixhdr(&rqp->sr_rq); 246 } 247 if (rqp->sr_sendcnt++ > 5) { 248 rqp->sr_flags |= SMBR_RESTART; 249 smb_iod_rqprocessed(rqp, rqp->sr_lerror); 250 /* 251 * If all attempts to send a request failed, then 252 * something is seriously hosed. 253 */ 254 return ENOTCONN; 255 } 256 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x\n", rqp->sr_mid, 0, 0, 0); 257 m_dumpm(rqp->sr_rq.mb_top); 258 m = m_copym(rqp->sr_rq.mb_top, 0, M_COPYALL, MB_WAIT); 259 error = rqp->sr_lerror = m ? SMB_TRAN_SEND(vcp, m, td) : ENOBUFS; 260 if (error == 0) { 261 getnanotime(&rqp->sr_timesent); 262 iod->iod_lastrqsent = rqp->sr_timesent; 263 rqp->sr_flags |= SMBR_SENT; 264 rqp->sr_state = SMBRQ_SENT; 265 return 0; 266 } 267 /* 268 * Check for fatal errors 269 */ 270 if (SMB_TRAN_FATAL(vcp, error)) { 271 /* 272 * No further attempts should be made 273 */ 274 return ENOTCONN; 275 } 276 if (smb_rq_intr(rqp)) 277 smb_iod_rqprocessed(rqp, EINTR); 278 return 0; 279 } 280 281 /* 282 * Process incoming packets 283 */ 284 static int 285 smb_iod_recvall(struct smbiod *iod) 286 { 287 struct smb_vc *vcp = iod->iod_vc; 288 struct thread *td = iod->iod_td; 289 struct smb_rq *rqp; 290 struct mbuf *m; 291 u_char *hp; 292 u_short mid; 293 int error; 294 295 switch (iod->iod_state) { 296 case SMBIOD_ST_NOTCONN: 297 case SMBIOD_ST_DEAD: 298 case SMBIOD_ST_RECONNECT: 299 return 0; 300 default: 301 break; 302 } 303 for (;;) { 304 m = NULL; 305 error = SMB_TRAN_RECV(vcp, &m, td); 306 if (error == EWOULDBLOCK) 307 break; 308 if (SMB_TRAN_FATAL(vcp, error)) { 309 smb_iod_dead(iod); 310 break; 311 } 312 if (error) 313 break; 314 if (m == NULL) { 315 SMBERROR("tran return NULL without error\n"); 316 error = EPIPE; 317 continue; 318 } 319 m = m_pullup(m, SMB_HDRLEN); 320 if (m == NULL) 321 continue; /* wait for a good packet */ 322 /* 323 * Now we got an entire and possibly invalid SMB packet. 324 * Be careful while parsing it. 325 */ 326 m_dumpm(m); 327 hp = mtod(m, u_char*); 328 if (bcmp(hp, SMB_SIGNATURE, SMB_SIGLEN) != 0) { 329 m_freem(m); 330 continue; 331 } 332 mid = SMB_HDRMID(hp); 333 SMBSDEBUG("mid %04x\n", (u_int)mid); 334 SMB_IOD_RQLOCK(iod); 335 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 336 if (rqp->sr_mid != mid) 337 continue; 338 SMBRQ_SLOCK(rqp); 339 if (rqp->sr_rp.md_top == NULL) { 340 md_initm(&rqp->sr_rp, m); 341 } else { 342 if (rqp->sr_flags & SMBR_MULTIPACKET) { 343 md_append_record(&rqp->sr_rp, m); 344 } else { 345 SMBRQ_SUNLOCK(rqp); 346 SMBERROR("duplicate response %d (ignored)\n", mid); 347 break; 348 } 349 } 350 SMBRQ_SUNLOCK(rqp); 351 smb_iod_rqprocessed(rqp, 0); 352 break; 353 } 354 SMB_IOD_RQUNLOCK(iod); 355 if (rqp == NULL) { 356 SMBERROR("drop resp with mid %d\n", (u_int)mid); 357 /* smb_printrqlist(vcp);*/ 358 m_freem(m); 359 } 360 } 361 /* 362 * check for interrupts 363 */ 364 SMB_IOD_RQLOCK(iod); 365 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 366 if (smb_proc_intr(rqp->sr_cred->scr_td)) { 367 smb_iod_rqprocessed(rqp, EINTR); 368 } 369 } 370 SMB_IOD_RQUNLOCK(iod); 371 return 0; 372 } 373 374 int 375 smb_iod_request(struct smbiod *iod, int event, void *ident) 376 { 377 struct smbiod_event *evp; 378 int error; 379 380 SMBIODEBUG("\n"); 381 evp = smb_zmalloc(sizeof(*evp), M_SMBIOD, M_WAITOK); 382 evp->ev_type = event; 383 evp->ev_ident = ident; 384 SMB_IOD_EVLOCK(iod); 385 STAILQ_INSERT_TAIL(&iod->iod_evlist, evp, ev_link); 386 if ((event & SMBIOD_EV_SYNC) == 0) { 387 SMB_IOD_EVUNLOCK(iod); 388 smb_iod_wakeup(iod); 389 return 0; 390 } 391 smb_iod_wakeup(iod); 392 smb_sleep(evp, SMB_IOD_EVINTERLOCK(iod), PDROP, "90evw", 0); 393 error = evp->ev_error; 394 kfree(evp, M_SMBIOD); 395 return error; 396 } 397 398 /* 399 * Place request in the queue. 400 * Request from smbiod have a high priority. 401 */ 402 int 403 smb_iod_addrq(struct smb_rq *rqp) 404 { 405 struct smb_vc *vcp = rqp->sr_vc; 406 struct smbiod *iod = vcp->vc_iod; 407 int error; 408 409 SMBIODEBUG("\n"); 410 if (rqp->sr_cred->scr_td == iod->iod_td) { 411 rqp->sr_flags |= SMBR_INTERNAL; 412 SMB_IOD_RQLOCK(iod); 413 TAILQ_INSERT_HEAD(&iod->iod_rqlist, rqp, sr_link); 414 SMB_IOD_RQUNLOCK(iod); 415 for (;;) { 416 if (smb_iod_sendrq(iod, rqp) != 0) { 417 smb_iod_dead(iod); 418 break; 419 } 420 /* 421 * we don't need to lock state field here 422 */ 423 if (rqp->sr_state != SMBRQ_NOTSENT) 424 break; 425 tsleep(&iod->iod_flags, 0, "90sndw", hz); 426 } 427 if (rqp->sr_lerror) 428 smb_iod_removerq(rqp); 429 return rqp->sr_lerror; 430 } 431 432 switch (iod->iod_state) { 433 case SMBIOD_ST_NOTCONN: 434 return ENOTCONN; 435 case SMBIOD_ST_DEAD: 436 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL); 437 if (error) 438 return error; 439 return EXDEV; 440 default: 441 break; 442 } 443 444 SMB_IOD_RQLOCK(iod); 445 for (;;) { 446 if (vcp->vc_maxmux == 0) { 447 SMBERROR("maxmux == 0\n"); 448 break; 449 } 450 if (iod->iod_muxcnt < vcp->vc_maxmux) 451 break; 452 iod->iod_muxwant++; 453 smb_sleep(&iod->iod_muxwant, SMB_IOD_RQINTERLOCK(iod), 0, "90mux", 0); 454 } 455 iod->iod_muxcnt++; 456 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 457 SMB_IOD_RQUNLOCK(iod); 458 smb_iod_wakeup(iod); 459 return 0; 460 } 461 462 int 463 smb_iod_removerq(struct smb_rq *rqp) 464 { 465 struct smb_vc *vcp = rqp->sr_vc; 466 struct smbiod *iod = vcp->vc_iod; 467 468 SMBIODEBUG("\n"); 469 if (rqp->sr_flags & SMBR_INTERNAL) { 470 SMB_IOD_RQLOCK(iod); 471 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 472 SMB_IOD_RQUNLOCK(iod); 473 return 0; 474 } 475 SMB_IOD_RQLOCK(iod); 476 while (rqp->sr_flags & SMBR_XLOCK) { 477 rqp->sr_flags |= SMBR_XLOCKWANT; 478 smb_sleep(rqp, SMB_IOD_RQINTERLOCK(iod), 0, "90xrm", 0); 479 } 480 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 481 iod->iod_muxcnt--; 482 if (iod->iod_muxwant) { 483 iod->iod_muxwant--; 484 wakeup(&iod->iod_muxwant); 485 } 486 SMB_IOD_RQUNLOCK(iod); 487 return 0; 488 } 489 490 int 491 smb_iod_waitrq(struct smb_rq *rqp) 492 { 493 struct smbiod *iod = rqp->sr_vc->vc_iod; 494 int error; 495 496 SMBIODEBUG("\n"); 497 if (rqp->sr_flags & SMBR_INTERNAL) { 498 for (;;) { 499 smb_iod_sendall(iod); 500 smb_iod_recvall(iod); 501 if (rqp->sr_rpgen != rqp->sr_rplast) 502 break; 503 tsleep(&iod->iod_flags, 0, "90irq", hz); 504 } 505 smb_iod_removerq(rqp); 506 return rqp->sr_lerror; 507 508 } 509 SMBRQ_SLOCK(rqp); 510 if (rqp->sr_rpgen == rqp->sr_rplast) 511 smb_sleep(&rqp->sr_state, SMBRQ_INTERLOCK(rqp), 0, "90wrq", 0); 512 rqp->sr_rplast++; 513 SMBRQ_SUNLOCK(rqp); 514 error = rqp->sr_lerror; 515 if (rqp->sr_flags & SMBR_MULTIPACKET) { 516 /* 517 * If request should stay in the list, then reinsert it 518 * at the end of queue so other waiters have chance to concur 519 */ 520 SMB_IOD_RQLOCK(iod); 521 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 522 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 523 SMB_IOD_RQUNLOCK(iod); 524 } else 525 smb_iod_removerq(rqp); 526 return error; 527 } 528 529 530 static int 531 smb_iod_sendall(struct smbiod *iod) 532 { 533 struct smb_vc *vcp = iod->iod_vc; 534 struct smb_rq *rqp; 535 struct timespec ts, tstimeout; 536 int herror; 537 538 herror = 0; 539 /* 540 * Loop through the list of requests and send them if possible 541 */ 542 SMB_IOD_RQLOCK(iod); 543 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 544 switch (rqp->sr_state) { 545 case SMBRQ_NOTSENT: 546 rqp->sr_flags |= SMBR_XLOCK; 547 SMB_IOD_RQUNLOCK(iod); 548 herror = smb_iod_sendrq(iod, rqp); 549 SMB_IOD_RQLOCK(iod); 550 rqp->sr_flags &= ~SMBR_XLOCK; 551 if (rqp->sr_flags & SMBR_XLOCKWANT) { 552 rqp->sr_flags &= ~SMBR_XLOCKWANT; 553 wakeup(rqp); 554 } 555 break; 556 case SMBRQ_SENT: 557 SMB_TRAN_GETPARAM(vcp, SMBTP_TIMEOUT, &tstimeout); 558 timespecadd(&tstimeout, &tstimeout); 559 getnanotime(&ts); 560 timespecsub(&ts, &tstimeout); 561 if (timespeccmp(&ts, &rqp->sr_timesent, >)) { 562 smb_iod_rqprocessed(rqp, ETIMEDOUT); 563 } 564 break; 565 default: 566 break; 567 } 568 if (herror) 569 break; 570 } 571 SMB_IOD_RQUNLOCK(iod); 572 if (herror == ENOTCONN) 573 smb_iod_dead(iod); 574 return 0; 575 } 576 577 /* 578 * "main" function for smbiod daemon 579 */ 580 static __inline void 581 smb_iod_main(struct smbiod *iod) 582 { 583 /* struct smb_vc *vcp = iod->iod_vc;*/ 584 struct smbiod_event *evp; 585 /* struct timespec tsnow;*/ 586 int error; 587 588 SMBIODEBUG("\n"); 589 error = 0; 590 591 /* 592 * Check all interesting events 593 */ 594 for (;;) { 595 SMB_IOD_EVLOCK(iod); 596 evp = STAILQ_FIRST(&iod->iod_evlist); 597 if (evp == NULL) { 598 SMB_IOD_EVUNLOCK(iod); 599 break; 600 } 601 STAILQ_REMOVE_HEAD(&iod->iod_evlist, ev_link); 602 evp->ev_type |= SMBIOD_EV_PROCESSING; 603 SMB_IOD_EVUNLOCK(iod); 604 switch (evp->ev_type & SMBIOD_EV_MASK) { 605 case SMBIOD_EV_CONNECT: 606 iod->iod_state = SMBIOD_ST_RECONNECT; 607 evp->ev_error = smb_iod_connect(iod); 608 break; 609 case SMBIOD_EV_DISCONNECT: 610 evp->ev_error = smb_iod_disconnect(iod); 611 break; 612 case SMBIOD_EV_TREECONNECT: 613 evp->ev_error = smb_iod_treeconnect(iod, evp->ev_ident); 614 break; 615 case SMBIOD_EV_SHUTDOWN: 616 iod->iod_flags |= SMBIOD_SHUTDOWN; 617 break; 618 case SMBIOD_EV_NEWRQ: 619 break; 620 } 621 if (evp->ev_type & SMBIOD_EV_SYNC) { 622 SMB_IOD_EVLOCK(iod); 623 wakeup(evp); 624 SMB_IOD_EVUNLOCK(iod); 625 } else 626 kfree(evp, M_SMBIOD); 627 } 628 #if 0 629 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 630 getnanotime(&tsnow); 631 timespecsub(&tsnow, &iod->iod_pingtimo); 632 if (timespeccmp(&tsnow, &iod->iod_lastrqsent, >)) { 633 smb_smb_echo(vcp, &iod->iod_scred); 634 } 635 } 636 #endif 637 smb_iod_sendall(iod); 638 smb_iod_recvall(iod); 639 return; 640 } 641 642 #define kthread_create_compat smb_kthread_create 643 #define kthread_exit_compat smb_kthread_exit 644 645 void 646 smb_iod_thread(void *arg) 647 { 648 struct smbiod *iod = arg; 649 650 /* 651 * mplock not held on entry but we aren't mpsafe yet. 652 */ 653 get_mplock(); 654 655 smb_makescred(&iod->iod_scred, iod->iod_td, NULL); 656 while ((iod->iod_flags & SMBIOD_SHUTDOWN) == 0) { 657 smb_iod_main(iod); 658 SMBIODEBUG("going to sleep for %d ticks\n", iod->iod_sleeptimo); 659 if (iod->iod_flags & SMBIOD_SHUTDOWN) 660 break; 661 tsleep(&iod->iod_flags, 0, "90idle", iod->iod_sleeptimo); 662 } 663 kthread_exit_compat(); 664 } 665 666 int 667 smb_iod_create(struct smb_vc *vcp) 668 { 669 struct smbiod *iod; 670 struct proc *newp = NULL; 671 int error; 672 673 iod = smb_zmalloc(sizeof(*iod), M_SMBIOD, M_WAITOK); 674 iod->iod_id = smb_iod_next++; 675 iod->iod_state = SMBIOD_ST_NOTCONN; 676 iod->iod_vc = vcp; 677 iod->iod_sleeptimo = hz * SMBIOD_SLEEP_TIMO; 678 iod->iod_pingtimo.tv_sec = SMBIOD_PING_TIMO; 679 getnanotime(&iod->iod_lastrqsent); 680 vcp->vc_iod = iod; 681 smb_sl_init(&iod->iod_rqlock, "90rql"); 682 TAILQ_INIT(&iod->iod_rqlist); 683 smb_sl_init(&iod->iod_evlock, "90evl"); 684 STAILQ_INIT(&iod->iod_evlist); 685 error = kthread_create_compat(smb_iod_thread, iod, &newp, 686 RFNOWAIT, "smbiod%d", iod->iod_id); 687 if (error) { 688 SMBERROR("can't start smbiod: %d", error); 689 kfree(iod, M_SMBIOD); 690 return error; 691 } 692 /* XXX lwp */ 693 iod->iod_td = ONLY_LWP_IN_PROC(newp)->lwp_thread; 694 return 0; 695 } 696 697 int 698 smb_iod_destroy(struct smbiod *iod) 699 { 700 smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL); 701 smb_sl_destroy(&iod->iod_rqlock); 702 smb_sl_destroy(&iod->iod_evlock); 703 kfree(iod, M_SMBIOD); 704 return 0; 705 } 706 707 int 708 smb_iod_init(void) 709 { 710 return 0; 711 } 712 713 int 714 smb_iod_done(void) 715 { 716 return 0; 717 } 718 719