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