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/endian.h> 39 #include <sys/proc.h> 40 #include <sys/kernel.h> 41 #include <sys/kthread.h> 42 #include <sys/malloc.h> 43 #include <sys/mbuf.h> 44 #include <sys/unistd.h> 45 46 #include <sys/mplock2.h> 47 48 #include "smb.h" 49 #include "smb_conn.h" 50 #include "smb_rq.h" 51 #include "smb_tran.h" 52 #include "smb_trantcp.h" 53 54 55 #define SMBIOD_SLEEP_TIMO 2 56 #define SMBIOD_PING_TIMO 60 /* seconds */ 57 58 #define SMB_IOD_EVLOCKPTR(iod) (&(iod)->iod_evlock) 59 #define SMB_IOD_EVLOCK(iod) smb_sl_lock(&(iod)->iod_evlock) 60 #define SMB_IOD_EVUNLOCK(iod) smb_sl_unlock(&(iod)->iod_evlock) 61 #define SMB_IOD_EVINTERLOCK(iod) (&(iod)->iod_evlock) 62 63 #define SMB_IOD_RQLOCKPTR(iod) (&(iod)->iod_rqlock) 64 #define SMB_IOD_RQLOCK(iod) smb_sl_lock(&((iod)->iod_rqlock)) 65 #define SMB_IOD_RQUNLOCK(iod) smb_sl_unlock(&(iod)->iod_rqlock) 66 #define SMB_IOD_RQINTERLOCK(iod) (&(iod)->iod_rqlock) 67 68 #define smb_iod_wakeup(iod) wakeup(&(iod)->iod_flags) 69 70 71 static MALLOC_DEFINE(M_SMBIOD, "SMBIOD", "SMB network io daemon"); 72 73 static int smb_iod_next; 74 75 static int smb_iod_sendall(struct smbiod *iod); 76 static int smb_iod_disconnect(struct smbiod *iod); 77 static void smb_iod_thread(void *); 78 79 static __inline void 80 smb_iod_rqprocessed(struct smb_rq *rqp, int error) 81 { 82 SMBRQ_SLOCK(rqp); 83 rqp->sr_lerror = error; 84 rqp->sr_rpgen++; 85 rqp->sr_state = SMBRQ_NOTIFIED; 86 wakeup(&rqp->sr_state); 87 SMBRQ_SUNLOCK(rqp); 88 } 89 90 static void 91 smb_iod_invrq(struct smbiod *iod) 92 { 93 struct smb_rq *rqp; 94 95 /* 96 * Invalidate all outstanding requests for this connection 97 */ 98 SMB_IOD_RQLOCK(iod); 99 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 100 #if 0 101 /* this makes no sense whatsoever XXX */ 102 if (rqp->sr_flags & SMBR_INTERNAL) 103 SMBRQ_SUNLOCK(rqp); 104 #endif 105 rqp->sr_flags |= SMBR_RESTART; 106 smb_iod_rqprocessed(rqp, ENOTCONN); 107 } 108 SMB_IOD_RQUNLOCK(iod); 109 } 110 111 static void 112 smb_iod_closetran(struct smbiod *iod) 113 { 114 struct smb_vc *vcp = iod->iod_vc; 115 struct thread *td = iod->iod_td; 116 117 if (vcp->vc_tdata == NULL) 118 return; 119 SMB_TRAN_DISCONNECT(vcp, td); 120 SMB_TRAN_DONE(vcp, td); 121 vcp->vc_tdata = NULL; 122 } 123 124 static void 125 smb_iod_dead(struct smbiod *iod) 126 { 127 iod->iod_state = SMBIOD_ST_DEAD; 128 smb_iod_closetran(iod); 129 smb_iod_invrq(iod); 130 } 131 132 static int 133 smb_iod_connect(struct smbiod *iod) 134 { 135 struct smb_vc *vcp = iod->iod_vc; 136 struct thread *td = iod->iod_td; 137 int error; 138 139 SMBIODEBUG("%d\n", iod->iod_state); 140 switch(iod->iod_state) { 141 case SMBIOD_ST_VCACTIVE: 142 SMBERROR("called for already opened connection\n"); 143 return EISCONN; 144 case SMBIOD_ST_DEAD: 145 return ENOTCONN; /* XXX: last error code ? */ 146 default: 147 break; 148 } 149 vcp->vc_genid++; 150 151 do { 152 error = SMB_TRAN_CREATE(vcp, td); 153 if (error != 0) 154 break; 155 SMBIODEBUG("tcreate\n"); 156 157 if (vcp->vc_laddr) { 158 error = SMB_TRAN_BIND(vcp, vcp->vc_laddr, td); 159 if (error != 0) 160 break; 161 } 162 SMBIODEBUG("tbind\n"); 163 164 error = SMB_TRAN_CONNECT(vcp, vcp->vc_paddr, td); 165 if (error != 0) 166 break; 167 SMB_TRAN_SETPARAM(vcp, SMBTP_SELECTID, &iod->iod_flags); 168 iod->iod_state = SMBIOD_ST_TRANACTIVE; 169 SMBIODEBUG("tconnect\n"); 170 171 /* vcp->vc_mid = 0;*/ 172 173 error = smb_smb_negotiate(vcp, &iod->iod_scred); 174 if (error != 0) 175 break; 176 SMBIODEBUG("snegotiate\n"); 177 178 error = smb_smb_ssnsetup(vcp, &iod->iod_scred); 179 if (error != 0) 180 break; 181 iod->iod_state = SMBIOD_ST_VCACTIVE; 182 SMBIODEBUG("completed\n"); 183 184 smb_iod_invrq(iod); 185 error = 0; 186 } while (0); 187 188 if (error) 189 smb_iod_dead(iod); 190 return error; 191 } 192 193 static int 194 smb_iod_disconnect(struct smbiod *iod) 195 { 196 struct smb_vc *vcp = iod->iod_vc; 197 198 SMBIODEBUG("\n"); 199 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 200 smb_smb_ssnclose(vcp, &iod->iod_scred); 201 iod->iod_state = SMBIOD_ST_TRANACTIVE; 202 } 203 vcp->vc_smbuid = SMB_UID_UNKNOWN; 204 smb_iod_closetran(iod); 205 iod->iod_state = SMBIOD_ST_NOTCONN; 206 return 0; 207 } 208 209 static int 210 smb_iod_treeconnect(struct smbiod *iod, struct smb_share *ssp) 211 { 212 int error; 213 214 if (iod->iod_state != SMBIOD_ST_VCACTIVE) { 215 if (iod->iod_state != SMBIOD_ST_DEAD) 216 return ENOTCONN; 217 iod->iod_state = SMBIOD_ST_RECONNECT; 218 error = smb_iod_connect(iod); 219 if (error) 220 return error; 221 } 222 SMBIODEBUG("tree reconnect\n"); 223 SMBS_ST_LOCK(ssp); 224 ssp->ss_flags |= SMBS_RECONNECTING; 225 SMBS_ST_UNLOCK(ssp); 226 error = smb_smb_treeconnect(ssp, &iod->iod_scred); 227 SMBS_ST_LOCK(ssp); 228 ssp->ss_flags &= ~SMBS_RECONNECTING; 229 SMBS_ST_UNLOCK(ssp); 230 wakeup(&ssp->ss_vcgenid); 231 return error; 232 } 233 234 static int 235 smb_iod_sendrq(struct smbiod *iod, struct smb_rq *rqp) 236 { 237 struct thread *td = iod->iod_td; 238 struct smb_vc *vcp = iod->iod_vc; 239 struct smb_share *ssp = rqp->sr_share; 240 struct mbuf *m; 241 int error; 242 243 SMBIODEBUG("iod_state = %d\n", iod->iod_state); 244 switch (iod->iod_state) { 245 case SMBIOD_ST_NOTCONN: 246 smb_iod_rqprocessed(rqp, ENOTCONN); 247 return 0; 248 case SMBIOD_ST_DEAD: 249 iod->iod_state = SMBIOD_ST_RECONNECT; 250 return 0; 251 case SMBIOD_ST_RECONNECT: 252 return 0; 253 default: 254 break; 255 } 256 if (rqp->sr_sendcnt == 0) { 257 #ifdef movedtoanotherplace 258 if (vcp->vc_maxmux != 0 && iod->iod_muxcnt >= vcp->vc_maxmux) 259 return 0; 260 #endif 261 *rqp->sr_rqtid = htole16(ssp ? ssp->ss_tid : SMB_TID_UNKNOWN); 262 *rqp->sr_rquid = htole16(vcp ? vcp->vc_smbuid : 0); 263 mb_fixhdr(&rqp->sr_rq); 264 } 265 if (rqp->sr_sendcnt++ > 5) { 266 rqp->sr_flags |= SMBR_RESTART; 267 smb_iod_rqprocessed(rqp, rqp->sr_lerror); 268 /* 269 * If all attempts to send a request failed, then 270 * something is seriously hosed. 271 */ 272 return ENOTCONN; 273 } 274 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x\n", rqp->sr_mid, 0, 0, 0); 275 m_dumpm(rqp->sr_rq.mb_top); 276 m = m_copym(rqp->sr_rq.mb_top, 0, M_COPYALL, MB_WAIT); 277 error = rqp->sr_lerror = m ? SMB_TRAN_SEND(vcp, m, td) : ENOBUFS; 278 if (error == 0) { 279 getnanotime(&rqp->sr_timesent); 280 iod->iod_lastrqsent = rqp->sr_timesent; 281 rqp->sr_flags |= SMBR_SENT; 282 rqp->sr_state = SMBRQ_SENT; 283 return 0; 284 } 285 /* 286 * Check for fatal errors 287 */ 288 if (SMB_TRAN_FATAL(vcp, error)) { 289 /* 290 * No further attempts should be made 291 */ 292 return ENOTCONN; 293 } 294 if (smb_rq_intr(rqp)) 295 smb_iod_rqprocessed(rqp, EINTR); 296 return 0; 297 } 298 299 /* 300 * Process incoming packets 301 */ 302 static int 303 smb_iod_recvall(struct smbiod *iod) 304 { 305 struct smb_vc *vcp = iod->iod_vc; 306 struct thread *td = iod->iod_td; 307 struct smb_rq *rqp; 308 struct mbuf *m; 309 u_char *hp; 310 u_short mid; 311 int error; 312 313 switch (iod->iod_state) { 314 case SMBIOD_ST_NOTCONN: 315 case SMBIOD_ST_DEAD: 316 case SMBIOD_ST_RECONNECT: 317 return 0; 318 default: 319 break; 320 } 321 for (;;) { 322 m = NULL; 323 error = SMB_TRAN_RECV(vcp, &m, td); 324 if (error == EWOULDBLOCK) 325 break; 326 if (SMB_TRAN_FATAL(vcp, error)) { 327 smb_iod_dead(iod); 328 break; 329 } 330 if (error) 331 break; 332 if (m == NULL) { 333 SMBERROR("tran return NULL without error\n"); 334 error = EPIPE; 335 continue; 336 } 337 m = m_pullup(m, SMB_HDRLEN); 338 if (m == NULL) 339 continue; /* wait for a good packet */ 340 /* 341 * Now we got an entire and possibly invalid SMB packet. 342 * Be careful while parsing it. 343 */ 344 m_dumpm(m); 345 hp = mtod(m, u_char*); 346 if (bcmp(hp, SMB_SIGNATURE, SMB_SIGLEN) != 0) { 347 m_freem(m); 348 continue; 349 } 350 mid = SMB_HDRMID(hp); 351 SMBSDEBUG("mid %04x\n", (u_int)mid); 352 SMB_IOD_RQLOCK(iod); 353 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 354 if (rqp->sr_mid != mid) 355 continue; 356 SMBRQ_SLOCK(rqp); 357 if (rqp->sr_rp.md_top == NULL) { 358 md_initm(&rqp->sr_rp, m); 359 } else { 360 if (rqp->sr_flags & SMBR_MULTIPACKET) { 361 md_append_record(&rqp->sr_rp, m); 362 } else { 363 SMBRQ_SUNLOCK(rqp); 364 SMBERROR("duplicate response %d (ignored)\n", mid); 365 break; 366 } 367 } 368 SMBRQ_SUNLOCK(rqp); 369 smb_iod_rqprocessed(rqp, 0); 370 break; 371 } 372 SMB_IOD_RQUNLOCK(iod); 373 if (rqp == NULL) { 374 SMBERROR("drop resp with mid %d\n", (u_int)mid); 375 /* smb_printrqlist(vcp);*/ 376 m_freem(m); 377 } 378 } 379 /* 380 * check for interrupts 381 */ 382 SMB_IOD_RQLOCK(iod); 383 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 384 if (smb_proc_intr(rqp->sr_cred->scr_td)) { 385 smb_iod_rqprocessed(rqp, EINTR); 386 } 387 } 388 SMB_IOD_RQUNLOCK(iod); 389 return 0; 390 } 391 392 int 393 smb_iod_request(struct smbiod *iod, int event, void *ident) 394 { 395 struct smbiod_event *evp; 396 int error; 397 398 SMBIODEBUG("\n"); 399 evp = smb_zmalloc(sizeof(*evp), M_SMBIOD, M_WAITOK); 400 evp->ev_type = event; 401 evp->ev_ident = ident; 402 SMB_IOD_EVLOCK(iod); 403 STAILQ_INSERT_TAIL(&iod->iod_evlist, evp, ev_link); 404 if ((event & SMBIOD_EV_SYNC) == 0) { 405 SMB_IOD_EVUNLOCK(iod); 406 smb_iod_wakeup(iod); 407 return 0; 408 } 409 smb_iod_wakeup(iod); 410 smb_sleep(evp, SMB_IOD_EVINTERLOCK(iod), PDROP, "90evw", 0); 411 error = evp->ev_error; 412 kfree(evp, M_SMBIOD); 413 return error; 414 } 415 416 /* 417 * Place request in the queue. 418 * Request from smbiod have a high priority. 419 */ 420 int 421 smb_iod_addrq(struct smb_rq *rqp) 422 { 423 struct smb_vc *vcp = rqp->sr_vc; 424 struct smbiod *iod = vcp->vc_iod; 425 int error; 426 427 SMBIODEBUG("\n"); 428 if (rqp->sr_cred->scr_td == iod->iod_td) { 429 rqp->sr_flags |= SMBR_INTERNAL; 430 SMB_IOD_RQLOCK(iod); 431 TAILQ_INSERT_HEAD(&iod->iod_rqlist, rqp, sr_link); 432 SMB_IOD_RQUNLOCK(iod); 433 for (;;) { 434 if (smb_iod_sendrq(iod, rqp) != 0) { 435 smb_iod_dead(iod); 436 break; 437 } 438 /* 439 * we don't need to lock state field here 440 */ 441 if (rqp->sr_state != SMBRQ_NOTSENT) 442 break; 443 tsleep(&iod->iod_flags, 0, "90sndw", hz); 444 } 445 if (rqp->sr_lerror) 446 smb_iod_removerq(rqp); 447 return rqp->sr_lerror; 448 } 449 450 switch (iod->iod_state) { 451 case SMBIOD_ST_NOTCONN: 452 return ENOTCONN; 453 case SMBIOD_ST_DEAD: 454 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL); 455 if (error) 456 return error; 457 return EXDEV; 458 default: 459 break; 460 } 461 462 SMB_IOD_RQLOCK(iod); 463 for (;;) { 464 if (vcp->vc_maxmux == 0) { 465 SMBERROR("maxmux == 0\n"); 466 break; 467 } 468 if (iod->iod_muxcnt < vcp->vc_maxmux) 469 break; 470 iod->iod_muxwant++; 471 smb_sleep(&iod->iod_muxwant, SMB_IOD_RQINTERLOCK(iod), 0, "90mux", 0); 472 } 473 iod->iod_muxcnt++; 474 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 475 SMB_IOD_RQUNLOCK(iod); 476 smb_iod_wakeup(iod); 477 return 0; 478 } 479 480 int 481 smb_iod_removerq(struct smb_rq *rqp) 482 { 483 struct smb_vc *vcp = rqp->sr_vc; 484 struct smbiod *iod = vcp->vc_iod; 485 486 SMBIODEBUG("\n"); 487 if (rqp->sr_flags & SMBR_INTERNAL) { 488 SMB_IOD_RQLOCK(iod); 489 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 490 SMB_IOD_RQUNLOCK(iod); 491 return 0; 492 } 493 SMB_IOD_RQLOCK(iod); 494 while (rqp->sr_flags & SMBR_XLOCK) { 495 rqp->sr_flags |= SMBR_XLOCKWANT; 496 smb_sleep(rqp, SMB_IOD_RQINTERLOCK(iod), 0, "90xrm", 0); 497 } 498 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 499 iod->iod_muxcnt--; 500 if (iod->iod_muxwant) { 501 iod->iod_muxwant--; 502 wakeup(&iod->iod_muxwant); 503 } 504 SMB_IOD_RQUNLOCK(iod); 505 return 0; 506 } 507 508 int 509 smb_iod_waitrq(struct smb_rq *rqp) 510 { 511 struct smbiod *iod = rqp->sr_vc->vc_iod; 512 int error; 513 514 SMBIODEBUG("\n"); 515 if (rqp->sr_flags & SMBR_INTERNAL) { 516 for (;;) { 517 smb_iod_sendall(iod); 518 smb_iod_recvall(iod); 519 if (rqp->sr_rpgen != rqp->sr_rplast) 520 break; 521 tsleep(&iod->iod_flags, 0, "90irq", hz); 522 } 523 smb_iod_removerq(rqp); 524 return rqp->sr_lerror; 525 526 } 527 SMBRQ_SLOCK(rqp); 528 if (rqp->sr_rpgen == rqp->sr_rplast) 529 smb_sleep(&rqp->sr_state, SMBRQ_INTERLOCK(rqp), 0, "90wrq", 0); 530 rqp->sr_rplast++; 531 SMBRQ_SUNLOCK(rqp); 532 error = rqp->sr_lerror; 533 if (rqp->sr_flags & SMBR_MULTIPACKET) { 534 /* 535 * If request should stay in the list, then reinsert it 536 * at the end of queue so other waiters have chance to concur 537 */ 538 SMB_IOD_RQLOCK(iod); 539 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 540 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 541 SMB_IOD_RQUNLOCK(iod); 542 } else 543 smb_iod_removerq(rqp); 544 return error; 545 } 546 547 548 static int 549 smb_iod_sendall(struct smbiod *iod) 550 { 551 struct smb_vc *vcp = iod->iod_vc; 552 struct smb_rq *rqp; 553 struct timespec ts, tstimeout; 554 int herror; 555 556 herror = 0; 557 /* 558 * Loop through the list of requests and send them if possible 559 */ 560 SMB_IOD_RQLOCK(iod); 561 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 562 switch (rqp->sr_state) { 563 case SMBRQ_NOTSENT: 564 rqp->sr_flags |= SMBR_XLOCK; 565 SMB_IOD_RQUNLOCK(iod); 566 herror = smb_iod_sendrq(iod, rqp); 567 SMB_IOD_RQLOCK(iod); 568 rqp->sr_flags &= ~SMBR_XLOCK; 569 if (rqp->sr_flags & SMBR_XLOCKWANT) { 570 rqp->sr_flags &= ~SMBR_XLOCKWANT; 571 wakeup(rqp); 572 } 573 break; 574 case SMBRQ_SENT: 575 SMB_TRAN_GETPARAM(vcp, SMBTP_TIMEOUT, &tstimeout); 576 timespecadd(&tstimeout, &tstimeout); 577 getnanotime(&ts); 578 timespecsub(&ts, &tstimeout); 579 if (timespeccmp(&ts, &rqp->sr_timesent, >)) { 580 smb_iod_rqprocessed(rqp, ETIMEDOUT); 581 } 582 break; 583 default: 584 break; 585 } 586 if (herror) 587 break; 588 } 589 SMB_IOD_RQUNLOCK(iod); 590 if (herror == ENOTCONN) 591 smb_iod_dead(iod); 592 return 0; 593 } 594 595 /* 596 * "main" function for smbiod daemon 597 */ 598 static __inline void 599 smb_iod_main(struct smbiod *iod) 600 { 601 /* struct smb_vc *vcp = iod->iod_vc;*/ 602 struct smbiod_event *evp; 603 /* struct timespec tsnow;*/ 604 int error; 605 606 SMBIODEBUG("\n"); 607 error = 0; 608 609 /* 610 * Check all interesting events 611 */ 612 for (;;) { 613 SMB_IOD_EVLOCK(iod); 614 evp = STAILQ_FIRST(&iod->iod_evlist); 615 if (evp == NULL) { 616 SMB_IOD_EVUNLOCK(iod); 617 break; 618 } 619 STAILQ_REMOVE_HEAD(&iod->iod_evlist, ev_link); 620 evp->ev_type |= SMBIOD_EV_PROCESSING; 621 SMB_IOD_EVUNLOCK(iod); 622 switch (evp->ev_type & SMBIOD_EV_MASK) { 623 case SMBIOD_EV_CONNECT: 624 iod->iod_state = SMBIOD_ST_RECONNECT; 625 evp->ev_error = smb_iod_connect(iod); 626 break; 627 case SMBIOD_EV_DISCONNECT: 628 evp->ev_error = smb_iod_disconnect(iod); 629 break; 630 case SMBIOD_EV_TREECONNECT: 631 evp->ev_error = smb_iod_treeconnect(iod, evp->ev_ident); 632 break; 633 case SMBIOD_EV_SHUTDOWN: 634 iod->iod_flags |= SMBIOD_SHUTDOWN; 635 break; 636 case SMBIOD_EV_NEWRQ: 637 break; 638 } 639 if (evp->ev_type & SMBIOD_EV_SYNC) { 640 SMB_IOD_EVLOCK(iod); 641 wakeup(evp); 642 SMB_IOD_EVUNLOCK(iod); 643 } else 644 kfree(evp, M_SMBIOD); 645 } 646 #if 0 647 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 648 getnanotime(&tsnow); 649 timespecsub(&tsnow, &iod->iod_pingtimo); 650 if (timespeccmp(&tsnow, &iod->iod_lastrqsent, >)) { 651 smb_smb_echo(vcp, &iod->iod_scred); 652 } 653 } 654 #endif 655 smb_iod_sendall(iod); 656 smb_iod_recvall(iod); 657 return; 658 } 659 660 #define kthread_create_compat smb_kthread_create 661 #define kthread_exit_compat smb_kthread_exit 662 663 void 664 smb_iod_thread(void *arg) 665 { 666 struct smbiod *iod = arg; 667 668 /* 669 * mplock not held on entry but we aren't mpsafe yet. 670 */ 671 get_mplock(); 672 673 smb_makescred(&iod->iod_scred, iod->iod_td, NULL); 674 while ((iod->iod_flags & SMBIOD_SHUTDOWN) == 0) { 675 smb_iod_main(iod); 676 SMBIODEBUG("going to sleep for %d ticks\n", iod->iod_sleeptimo); 677 if (iod->iod_flags & SMBIOD_SHUTDOWN) 678 break; 679 tsleep(&iod->iod_flags, 0, "90idle", iod->iod_sleeptimo); 680 } 681 kthread_exit_compat(); 682 } 683 684 int 685 smb_iod_create(struct smb_vc *vcp) 686 { 687 struct smbiod *iod; 688 struct proc *newp = NULL; 689 int error; 690 691 iod = smb_zmalloc(sizeof(*iod), M_SMBIOD, M_WAITOK); 692 iod->iod_id = smb_iod_next++; 693 iod->iod_state = SMBIOD_ST_NOTCONN; 694 iod->iod_vc = vcp; 695 iod->iod_sleeptimo = hz * SMBIOD_SLEEP_TIMO; 696 iod->iod_pingtimo.tv_sec = SMBIOD_PING_TIMO; 697 getnanotime(&iod->iod_lastrqsent); 698 vcp->vc_iod = iod; 699 smb_sl_init(&iod->iod_rqlock, "90rql"); 700 TAILQ_INIT(&iod->iod_rqlist); 701 smb_sl_init(&iod->iod_evlock, "90evl"); 702 STAILQ_INIT(&iod->iod_evlist); 703 error = kthread_create_compat(smb_iod_thread, iod, &newp, 704 RFNOWAIT, "smbiod%d", iod->iod_id); 705 if (error) { 706 SMBERROR("can't start smbiod: %d", error); 707 kfree(iod, M_SMBIOD); 708 return error; 709 } 710 /* XXX lwp */ 711 iod->iod_td = ONLY_LWP_IN_PROC(newp)->lwp_thread; 712 return 0; 713 } 714 715 int 716 smb_iod_destroy(struct smbiod *iod) 717 { 718 smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL); 719 smb_sl_destroy(&iod->iod_rqlock); 720 smb_sl_destroy(&iod->iod_evlock); 721 kfree(iod, M_SMBIOD); 722 return 0; 723 } 724 725 int 726 smb_iod_init(void) 727 { 728 return 0; 729 } 730 731 int 732 smb_iod_done(void) 733 { 734 return 0; 735 } 736 737