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 if (vcp->vc_hflags2 & SMB_FLAGS2_SECURITY_SIGNATURE) 264 smb_rq_sign(rqp); 265 } 266 if (rqp->sr_sendcnt++ > 5) { 267 rqp->sr_flags |= SMBR_RESTART; 268 smb_iod_rqprocessed(rqp, rqp->sr_lerror); 269 /* 270 * If all attempts to send a request failed, then 271 * something is seriously hosed. 272 */ 273 return ENOTCONN; 274 } 275 SMBSDEBUG("M:%04x, P:%04x, U:%04x, T:%04x\n", rqp->sr_mid, 0, 0, 0); 276 m_dumpm(rqp->sr_rq.mb_top); 277 m = m_copym(rqp->sr_rq.mb_top, 0, M_COPYALL, M_WAITOK); 278 error = rqp->sr_lerror = m ? SMB_TRAN_SEND(vcp, m, td) : ENOBUFS; 279 if (error == 0) { 280 getnanotime(&rqp->sr_timesent); 281 iod->iod_lastrqsent = rqp->sr_timesent; 282 rqp->sr_flags |= SMBR_SENT; 283 rqp->sr_state = SMBRQ_SENT; 284 return 0; 285 } 286 /* 287 * Check for fatal errors 288 */ 289 if (SMB_TRAN_FATAL(vcp, error)) { 290 /* 291 * No further attempts should be made 292 */ 293 return ENOTCONN; 294 } 295 if (smb_rq_intr(rqp)) 296 smb_iod_rqprocessed(rqp, EINTR); 297 return 0; 298 } 299 300 /* 301 * Process incoming packets 302 */ 303 static int 304 smb_iod_recvall(struct smbiod *iod) 305 { 306 struct smb_vc *vcp = iod->iod_vc; 307 struct thread *td = iod->iod_td; 308 struct smb_rq *rqp; 309 struct mbuf *m; 310 u_char *hp; 311 u_short mid; 312 int error; 313 314 switch (iod->iod_state) { 315 case SMBIOD_ST_NOTCONN: 316 case SMBIOD_ST_DEAD: 317 case SMBIOD_ST_RECONNECT: 318 return 0; 319 default: 320 break; 321 } 322 for (;;) { 323 m = NULL; 324 error = SMB_TRAN_RECV(vcp, &m, td); 325 if (error == EWOULDBLOCK) 326 break; 327 if (SMB_TRAN_FATAL(vcp, error)) { 328 smb_iod_dead(iod); 329 break; 330 } 331 if (error) 332 break; 333 if (m == NULL) { 334 SMBERROR("tran return NULL without error\n"); 335 error = EPIPE; 336 continue; 337 } 338 m = m_pullup(m, SMB_HDRLEN); 339 if (m == NULL) 340 continue; /* wait for a good packet */ 341 /* 342 * Now we got an entire and possibly invalid SMB packet. 343 * Be careful while parsing it. 344 */ 345 m_dumpm(m); 346 hp = mtod(m, u_char*); 347 if (bcmp(hp, SMB_SIGNATURE, SMB_SIGLEN) != 0) { 348 m_freem(m); 349 continue; 350 } 351 mid = SMB_HDRMID(hp); 352 SMBSDEBUG("mid %04x\n", (u_int)mid); 353 SMB_IOD_RQLOCK(iod); 354 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 355 if (rqp->sr_mid != mid) 356 continue; 357 SMBRQ_SLOCK(rqp); 358 if (rqp->sr_rp.md_top == NULL) { 359 md_initm(&rqp->sr_rp, m); 360 } else { 361 if (rqp->sr_flags & SMBR_MULTIPACKET) { 362 md_append_record(&rqp->sr_rp, m); 363 } else { 364 SMBRQ_SUNLOCK(rqp); 365 SMBERROR("duplicate response %d (ignored)\n", mid); 366 break; 367 } 368 } 369 SMBRQ_SUNLOCK(rqp); 370 smb_iod_rqprocessed(rqp, 0); 371 break; 372 } 373 SMB_IOD_RQUNLOCK(iod); 374 if (rqp == NULL) { 375 SMBERROR("drop resp with mid %d\n", (u_int)mid); 376 /* smb_printrqlist(vcp);*/ 377 m_freem(m); 378 } 379 } 380 /* 381 * check for interrupts 382 */ 383 SMB_IOD_RQLOCK(iod); 384 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 385 if (smb_proc_intr(rqp->sr_cred->scr_td)) { 386 smb_iod_rqprocessed(rqp, EINTR); 387 } 388 } 389 SMB_IOD_RQUNLOCK(iod); 390 return 0; 391 } 392 393 int 394 smb_iod_request(struct smbiod *iod, int event, void *ident) 395 { 396 struct smbiod_event *evp; 397 int error; 398 399 SMBIODEBUG("\n"); 400 evp = smb_zmalloc(sizeof(*evp), M_SMBIOD, M_WAITOK); 401 evp->ev_type = event; 402 evp->ev_ident = ident; 403 SMB_IOD_EVLOCK(iod); 404 STAILQ_INSERT_TAIL(&iod->iod_evlist, evp, ev_link); 405 if ((event & SMBIOD_EV_SYNC) == 0) { 406 SMB_IOD_EVUNLOCK(iod); 407 smb_iod_wakeup(iod); 408 return 0; 409 } 410 smb_iod_wakeup(iod); 411 smb_sleep(evp, SMB_IOD_EVINTERLOCK(iod), PDROP, "90evw", 0); 412 error = evp->ev_error; 413 kfree(evp, M_SMBIOD); 414 return error; 415 } 416 417 /* 418 * Place request in the queue. 419 * Request from smbiod have a high priority. 420 */ 421 int 422 smb_iod_addrq(struct smb_rq *rqp) 423 { 424 struct smb_vc *vcp = rqp->sr_vc; 425 struct smbiod *iod = vcp->vc_iod; 426 int error; 427 428 SMBIODEBUG("\n"); 429 if (rqp->sr_cred->scr_td == iod->iod_td) { 430 rqp->sr_flags |= SMBR_INTERNAL; 431 SMB_IOD_RQLOCK(iod); 432 TAILQ_INSERT_HEAD(&iod->iod_rqlist, rqp, sr_link); 433 SMB_IOD_RQUNLOCK(iod); 434 for (;;) { 435 if (smb_iod_sendrq(iod, rqp) != 0) { 436 smb_iod_dead(iod); 437 break; 438 } 439 /* 440 * we don't need to lock state field here 441 */ 442 if (rqp->sr_state != SMBRQ_NOTSENT) 443 break; 444 tsleep(&iod->iod_flags, 0, "90sndw", hz); 445 } 446 if (rqp->sr_lerror) 447 smb_iod_removerq(rqp); 448 return rqp->sr_lerror; 449 } 450 451 switch (iod->iod_state) { 452 case SMBIOD_ST_NOTCONN: 453 return ENOTCONN; 454 case SMBIOD_ST_DEAD: 455 error = smb_iod_request(vcp->vc_iod, SMBIOD_EV_CONNECT | SMBIOD_EV_SYNC, NULL); 456 if (error) 457 return error; 458 return EXDEV; 459 default: 460 break; 461 } 462 463 SMB_IOD_RQLOCK(iod); 464 for (;;) { 465 if (vcp->vc_maxmux == 0) { 466 SMBERROR("maxmux == 0\n"); 467 break; 468 } 469 if (iod->iod_muxcnt < vcp->vc_maxmux) 470 break; 471 iod->iod_muxwant++; 472 smb_sleep(&iod->iod_muxwant, SMB_IOD_RQINTERLOCK(iod), 0, "90mux", 0); 473 } 474 iod->iod_muxcnt++; 475 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 476 SMB_IOD_RQUNLOCK(iod); 477 smb_iod_wakeup(iod); 478 return 0; 479 } 480 481 int 482 smb_iod_removerq(struct smb_rq *rqp) 483 { 484 struct smb_vc *vcp = rqp->sr_vc; 485 struct smbiod *iod = vcp->vc_iod; 486 487 SMBIODEBUG("\n"); 488 if (rqp->sr_flags & SMBR_INTERNAL) { 489 SMB_IOD_RQLOCK(iod); 490 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 491 SMB_IOD_RQUNLOCK(iod); 492 return 0; 493 } 494 SMB_IOD_RQLOCK(iod); 495 while (rqp->sr_flags & SMBR_XLOCK) { 496 rqp->sr_flags |= SMBR_XLOCKWANT; 497 smb_sleep(rqp, SMB_IOD_RQINTERLOCK(iod), 0, "90xrm", 0); 498 } 499 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 500 iod->iod_muxcnt--; 501 if (iod->iod_muxwant) { 502 iod->iod_muxwant--; 503 wakeup(&iod->iod_muxwant); 504 } 505 SMB_IOD_RQUNLOCK(iod); 506 return 0; 507 } 508 509 int 510 smb_iod_waitrq(struct smb_rq *rqp) 511 { 512 struct smbiod *iod = rqp->sr_vc->vc_iod; 513 int error; 514 515 SMBIODEBUG("\n"); 516 if (rqp->sr_flags & SMBR_INTERNAL) { 517 for (;;) { 518 smb_iod_sendall(iod); 519 smb_iod_recvall(iod); 520 if (rqp->sr_rpgen != rqp->sr_rplast) 521 break; 522 tsleep(&iod->iod_flags, 0, "90irq", hz); 523 } 524 smb_iod_removerq(rqp); 525 return rqp->sr_lerror; 526 527 } 528 SMBRQ_SLOCK(rqp); 529 if (rqp->sr_rpgen == rqp->sr_rplast) 530 smb_sleep(&rqp->sr_state, SMBRQ_INTERLOCK(rqp), 0, "90wrq", 0); 531 rqp->sr_rplast++; 532 SMBRQ_SUNLOCK(rqp); 533 error = rqp->sr_lerror; 534 if (rqp->sr_flags & SMBR_MULTIPACKET) { 535 /* 536 * If request should stay in the list, then reinsert it 537 * at the end of queue so other waiters have chance to concur 538 */ 539 SMB_IOD_RQLOCK(iod); 540 TAILQ_REMOVE(&iod->iod_rqlist, rqp, sr_link); 541 TAILQ_INSERT_TAIL(&iod->iod_rqlist, rqp, sr_link); 542 SMB_IOD_RQUNLOCK(iod); 543 } else 544 smb_iod_removerq(rqp); 545 return error; 546 } 547 548 549 static int 550 smb_iod_sendall(struct smbiod *iod) 551 { 552 struct smb_vc *vcp = iod->iod_vc; 553 struct smb_rq *rqp; 554 struct timespec ts, tstimeout; 555 int herror; 556 557 herror = 0; 558 /* 559 * Loop through the list of requests and send them if possible 560 */ 561 SMB_IOD_RQLOCK(iod); 562 TAILQ_FOREACH(rqp, &iod->iod_rqlist, sr_link) { 563 switch (rqp->sr_state) { 564 case SMBRQ_NOTSENT: 565 rqp->sr_flags |= SMBR_XLOCK; 566 SMB_IOD_RQUNLOCK(iod); 567 herror = smb_iod_sendrq(iod, rqp); 568 SMB_IOD_RQLOCK(iod); 569 rqp->sr_flags &= ~SMBR_XLOCK; 570 if (rqp->sr_flags & SMBR_XLOCKWANT) { 571 rqp->sr_flags &= ~SMBR_XLOCKWANT; 572 wakeup(rqp); 573 } 574 break; 575 case SMBRQ_SENT: 576 SMB_TRAN_GETPARAM(vcp, SMBTP_TIMEOUT, &tstimeout); 577 timespecadd(&tstimeout, &tstimeout); 578 getnanotime(&ts); 579 timespecsub(&ts, &tstimeout); 580 if (timespeccmp(&ts, &rqp->sr_timesent, >)) { 581 smb_iod_rqprocessed(rqp, ETIMEDOUT); 582 } 583 break; 584 default: 585 break; 586 } 587 if (herror) 588 break; 589 } 590 SMB_IOD_RQUNLOCK(iod); 591 if (herror == ENOTCONN) 592 smb_iod_dead(iod); 593 return 0; 594 } 595 596 /* 597 * "main" function for smbiod daemon 598 */ 599 static __inline void 600 smb_iod_main(struct smbiod *iod) 601 { 602 /* struct smb_vc *vcp = iod->iod_vc;*/ 603 struct smbiod_event *evp; 604 #if 0 605 struct timespec tsnow; 606 #endif 607 608 SMBIODEBUG("\n"); 609 610 /* 611 * Check all interesting events 612 */ 613 for (;;) { 614 SMB_IOD_EVLOCK(iod); 615 evp = STAILQ_FIRST(&iod->iod_evlist); 616 if (evp == NULL) { 617 SMB_IOD_EVUNLOCK(iod); 618 break; 619 } 620 STAILQ_REMOVE_HEAD(&iod->iod_evlist, ev_link); 621 evp->ev_type |= SMBIOD_EV_PROCESSING; 622 SMB_IOD_EVUNLOCK(iod); 623 switch (evp->ev_type & SMBIOD_EV_MASK) { 624 case SMBIOD_EV_CONNECT: 625 iod->iod_state = SMBIOD_ST_RECONNECT; 626 evp->ev_error = smb_iod_connect(iod); 627 break; 628 case SMBIOD_EV_DISCONNECT: 629 evp->ev_error = smb_iod_disconnect(iod); 630 break; 631 case SMBIOD_EV_TREECONNECT: 632 evp->ev_error = smb_iod_treeconnect(iod, evp->ev_ident); 633 break; 634 case SMBIOD_EV_SHUTDOWN: 635 iod->iod_flags |= SMBIOD_SHUTDOWN; 636 break; 637 case SMBIOD_EV_NEWRQ: 638 break; 639 } 640 if (evp->ev_type & SMBIOD_EV_SYNC) { 641 SMB_IOD_EVLOCK(iod); 642 wakeup(evp); 643 SMB_IOD_EVUNLOCK(iod); 644 } else 645 kfree(evp, M_SMBIOD); 646 } 647 #if 0 648 if (iod->iod_state == SMBIOD_ST_VCACTIVE) { 649 getnanotime(&tsnow); 650 timespecsub(&tsnow, &iod->iod_pingtimo); 651 if (timespeccmp(&tsnow, &iod->iod_lastrqsent, >)) { 652 smb_smb_echo(vcp, &iod->iod_scred); 653 } 654 } 655 #endif 656 smb_iod_sendall(iod); 657 smb_iod_recvall(iod); 658 return; 659 } 660 661 #define kthread_create_compat smb_kthread_create 662 #define kthread_exit_compat smb_kthread_exit 663 664 static void 665 smb_iod_thread(void *arg) 666 { 667 struct smbiod *iod = arg; 668 669 /* 670 * mplock not held on entry but we aren't mpsafe yet. 671 */ 672 get_mplock(); 673 674 smb_makescred(&iod->iod_scred, iod->iod_td, NULL); 675 while ((iod->iod_flags & SMBIOD_SHUTDOWN) == 0) { 676 smb_iod_main(iod); 677 SMBIODEBUG("going to sleep for %d ticks\n", iod->iod_sleeptimo); 678 if (iod->iod_flags & SMBIOD_SHUTDOWN) 679 break; 680 tsleep(&iod->iod_flags, 0, "90idle", iod->iod_sleeptimo); 681 } 682 kthread_exit_compat(); 683 } 684 685 int 686 smb_iod_create(struct smb_vc *vcp) 687 { 688 struct smbiod *iod; 689 struct proc *newp = NULL; 690 int error; 691 692 iod = smb_zmalloc(sizeof(*iod), M_SMBIOD, M_WAITOK); 693 iod->iod_id = smb_iod_next++; 694 iod->iod_state = SMBIOD_ST_NOTCONN; 695 iod->iod_vc = vcp; 696 iod->iod_sleeptimo = hz * SMBIOD_SLEEP_TIMO; 697 iod->iod_pingtimo.tv_sec = SMBIOD_PING_TIMO; 698 getnanotime(&iod->iod_lastrqsent); 699 vcp->vc_iod = iod; 700 smb_sl_init(&iod->iod_rqlock, "90rql"); 701 TAILQ_INIT(&iod->iod_rqlist); 702 smb_sl_init(&iod->iod_evlock, "90evl"); 703 STAILQ_INIT(&iod->iod_evlist); 704 error = kthread_create_compat(smb_iod_thread, iod, &newp, 705 RFNOWAIT, "smbiod%d", iod->iod_id); 706 if (error) { 707 SMBERROR("can't start smbiod: %d", error); 708 kfree(iod, M_SMBIOD); 709 return error; 710 } 711 /* XXX lwp */ 712 iod->iod_td = ONLY_LWP_IN_PROC(newp)->lwp_thread; 713 return 0; 714 } 715 716 int 717 smb_iod_destroy(struct smbiod *iod) 718 { 719 smb_iod_request(iod, SMBIOD_EV_SHUTDOWN | SMBIOD_EV_SYNC, NULL); 720 smb_sl_destroy(&iod->iod_rqlock); 721 smb_sl_destroy(&iod->iod_evlock); 722 kfree(iod, M_SMBIOD); 723 return 0; 724 } 725 726 int 727 smb_iod_init(void) 728 { 729 return 0; 730 } 731 732 int 733 smb_iod_done(void) 734 { 735 return 0; 736 } 737 738