1/* $NetBSD: svc.c,v 1.21 2000/07/06 03:10:35 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2009, Sun Microsystems, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions are met: 9 * - Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * - Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * - Neither the name of Sun Microsystems, Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#if defined(LIBC_SCCS) && !defined(lint) 32static char *sccsid2 = "@(#)svc.c 1.44 88/02/08 Copyr 1984 Sun Micro"; 33static char *sccsid = "@(#)svc.c 2.4 88/08/11 4.0 RPCSRC"; 34#endif 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD$"); 37 38/* 39 * svc.c, Server-side remote procedure call interface. 40 * 41 * There are two sets of procedures here. The xprt routines are 42 * for handling transport handles. The svc routines handle the 43 * list of service routines. 44 * 45 * Copyright (C) 1984, Sun Microsystems, Inc. 46 */ 47 48#include <sys/param.h> 49#include <sys/lock.h> 50#include <sys/kernel.h> 51#include <sys/kthread.h> 52#include <sys/malloc.h> 53#include <sys/mbuf.h> 54#include <sys/mutex.h> 55#include <sys/proc.h> 56#include <sys/queue.h> 57#include <sys/socketvar.h> 58#include <sys/systm.h> 59#include <sys/sx.h> 60#include <sys/ucred.h> 61 62#include <rpc/rpc.h> 63#include <rpc/rpcb_clnt.h> 64#include <rpc/replay.h> 65 66#include <rpc/rpc_com.h> 67 68#define SVC_VERSQUIET 0x0001 /* keep quiet about vers mismatch */ 69#define version_keepquiet(xp) (SVC_EXT(xp)->xp_flags & SVC_VERSQUIET) 70 71static struct svc_callout *svc_find(SVCPOOL *pool, rpcprog_t, rpcvers_t, 72 char *); 73static void svc_new_thread(SVCPOOL *pool); 74static void xprt_unregister_locked(SVCXPRT *xprt); 75static void svc_change_space_used(SVCPOOL *pool, int delta); 76static bool_t svc_request_space_available(SVCPOOL *pool); 77 78/* *************** SVCXPRT related stuff **************** */ 79 80static int svcpool_minthread_sysctl(SYSCTL_HANDLER_ARGS); 81static int svcpool_maxthread_sysctl(SYSCTL_HANDLER_ARGS); 82 83SVCPOOL* 84svcpool_create(const char *name, struct sysctl_oid_list *sysctl_base) 85{ 86 SVCPOOL *pool; 87 88 pool = malloc(sizeof(SVCPOOL), M_RPC, M_WAITOK|M_ZERO); 89 90 mtx_init(&pool->sp_lock, "sp_lock", NULL, MTX_DEF); 91 pool->sp_name = name; 92 pool->sp_state = SVCPOOL_INIT; 93 pool->sp_proc = NULL; 94 TAILQ_INIT(&pool->sp_xlist); 95 TAILQ_INIT(&pool->sp_active); 96 TAILQ_INIT(&pool->sp_callouts); 97 TAILQ_INIT(&pool->sp_lcallouts); 98 LIST_INIT(&pool->sp_threads); 99 LIST_INIT(&pool->sp_idlethreads); 100 pool->sp_minthreads = 1; 101 pool->sp_maxthreads = 1; 102 pool->sp_threadcount = 0; 103 104 /* 105 * Don't use more than a quarter of mbuf clusters or more than 106 * 45Mb buffering requests. 107 */ 108 pool->sp_space_high = nmbclusters * MCLBYTES / 4; 109 if (pool->sp_space_high > 45 << 20) 110 pool->sp_space_high = 45 << 20; 111 pool->sp_space_low = 2 * pool->sp_space_high / 3; 112 113 sysctl_ctx_init(&pool->sp_sysctl); 114 if (sysctl_base) { 115 SYSCTL_ADD_PROC(&pool->sp_sysctl, sysctl_base, OID_AUTO, 116 "minthreads", CTLTYPE_INT | CTLFLAG_RW, 117 pool, 0, svcpool_minthread_sysctl, "I", ""); 118 SYSCTL_ADD_PROC(&pool->sp_sysctl, sysctl_base, OID_AUTO, 119 "maxthreads", CTLTYPE_INT | CTLFLAG_RW, 120 pool, 0, svcpool_maxthread_sysctl, "I", ""); 121 SYSCTL_ADD_INT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 122 "threads", CTLFLAG_RD, &pool->sp_threadcount, 0, ""); 123 124 SYSCTL_ADD_UINT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 125 "request_space_used", CTLFLAG_RD, 126 &pool->sp_space_used, 0, 127 "Space in parsed but not handled requests."); 128 129 SYSCTL_ADD_UINT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 130 "request_space_used_highest", CTLFLAG_RD, 131 &pool->sp_space_used_highest, 0, 132 "Highest space used since reboot."); 133 134 SYSCTL_ADD_UINT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 135 "request_space_high", CTLFLAG_RW, 136 &pool->sp_space_high, 0, 137 "Maximum space in parsed but not handled requests."); 138 139 SYSCTL_ADD_UINT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 140 "request_space_low", CTLFLAG_RW, 141 &pool->sp_space_low, 0, 142 "Low water mark for request space."); 143 144 SYSCTL_ADD_INT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 145 "request_space_throttled", CTLFLAG_RD, 146 &pool->sp_space_throttled, 0, 147 "Whether nfs requests are currently throttled"); 148 149 SYSCTL_ADD_INT(&pool->sp_sysctl, sysctl_base, OID_AUTO, 150 "request_space_throttle_count", CTLFLAG_RD, 151 &pool->sp_space_throttle_count, 0, 152 "Count of times throttling based on request space has occurred"); 153 } 154 155 return pool; 156} 157 158void 159svcpool_destroy(SVCPOOL *pool) 160{ 161 SVCXPRT *xprt, *nxprt; 162 struct svc_callout *s; 163 struct svc_loss_callout *sl; 164 struct svcxprt_list cleanup; 165 166 TAILQ_INIT(&cleanup); 167 mtx_lock(&pool->sp_lock); 168 169 while (TAILQ_FIRST(&pool->sp_xlist)) { 170 xprt = TAILQ_FIRST(&pool->sp_xlist); 171 xprt_unregister_locked(xprt); 172 TAILQ_INSERT_TAIL(&cleanup, xprt, xp_link); 173 } 174 175 while ((s = TAILQ_FIRST(&pool->sp_callouts)) != NULL) { 176 mtx_unlock(&pool->sp_lock); 177 svc_unreg(pool, s->sc_prog, s->sc_vers); 178 mtx_lock(&pool->sp_lock); 179 } 180 while ((sl = TAILQ_FIRST(&pool->sp_lcallouts)) != NULL) { 181 mtx_unlock(&pool->sp_lock); 182 svc_loss_unreg(pool, sl->slc_dispatch); 183 mtx_lock(&pool->sp_lock); 184 } 185 mtx_unlock(&pool->sp_lock); 186 187 TAILQ_FOREACH_SAFE(xprt, &cleanup, xp_link, nxprt) { 188 SVC_RELEASE(xprt); 189 } 190 191 mtx_destroy(&pool->sp_lock); 192 193 if (pool->sp_rcache) 194 replay_freecache(pool->sp_rcache); 195 196 sysctl_ctx_free(&pool->sp_sysctl); 197 free(pool, M_RPC); 198} 199 200static bool_t 201svcpool_active(SVCPOOL *pool) 202{ 203 enum svcpool_state state = pool->sp_state; 204 205 if (state == SVCPOOL_INIT || state == SVCPOOL_CLOSING) 206 return (FALSE); 207 return (TRUE); 208} 209 210/* 211 * Sysctl handler to set the minimum thread count on a pool 212 */ 213static int 214svcpool_minthread_sysctl(SYSCTL_HANDLER_ARGS) 215{ 216 SVCPOOL *pool; 217 int newminthreads, error, n; 218 219 pool = oidp->oid_arg1; 220 newminthreads = pool->sp_minthreads; 221 error = sysctl_handle_int(oidp, &newminthreads, 0, req); 222 if (error == 0 && newminthreads != pool->sp_minthreads) { 223 if (newminthreads > pool->sp_maxthreads) 224 return (EINVAL); 225 mtx_lock(&pool->sp_lock); 226 if (newminthreads > pool->sp_minthreads 227 && svcpool_active(pool)) { 228 /* 229 * If the pool is running and we are 230 * increasing, create some more threads now. 231 */ 232 n = newminthreads - pool->sp_threadcount; 233 if (n > 0) { 234 mtx_unlock(&pool->sp_lock); 235 while (n--) 236 svc_new_thread(pool); 237 mtx_lock(&pool->sp_lock); 238 } 239 } 240 pool->sp_minthreads = newminthreads; 241 mtx_unlock(&pool->sp_lock); 242 } 243 return (error); 244} 245 246/* 247 * Sysctl handler to set the maximum thread count on a pool 248 */ 249static int 250svcpool_maxthread_sysctl(SYSCTL_HANDLER_ARGS) 251{ 252 SVCPOOL *pool; 253 SVCTHREAD *st; 254 int newmaxthreads, error; 255 256 pool = oidp->oid_arg1; 257 newmaxthreads = pool->sp_maxthreads; 258 error = sysctl_handle_int(oidp, &newmaxthreads, 0, req); 259 if (error == 0 && newmaxthreads != pool->sp_maxthreads) { 260 if (newmaxthreads < pool->sp_minthreads) 261 return (EINVAL); 262 mtx_lock(&pool->sp_lock); 263 if (newmaxthreads < pool->sp_maxthreads 264 && svcpool_active(pool)) { 265 /* 266 * If the pool is running and we are 267 * decreasing, wake up some idle threads to 268 * encourage them to exit. 269 */ 270 LIST_FOREACH(st, &pool->sp_idlethreads, st_ilink) 271 cv_signal(&st->st_cond); 272 } 273 pool->sp_maxthreads = newmaxthreads; 274 mtx_unlock(&pool->sp_lock); 275 } 276 return (error); 277} 278 279/* 280 * Activate a transport handle. 281 */ 282void 283xprt_register(SVCXPRT *xprt) 284{ 285 SVCPOOL *pool = xprt->xp_pool; 286 287 SVC_ACQUIRE(xprt); 288 mtx_lock(&pool->sp_lock); 289 xprt->xp_registered = TRUE; 290 xprt->xp_active = FALSE; 291 TAILQ_INSERT_TAIL(&pool->sp_xlist, xprt, xp_link); 292 mtx_unlock(&pool->sp_lock); 293} 294 295/* 296 * De-activate a transport handle. Note: the locked version doesn't 297 * release the transport - caller must do that after dropping the pool 298 * lock. 299 */ 300static void 301xprt_unregister_locked(SVCXPRT *xprt) 302{ 303 SVCPOOL *pool = xprt->xp_pool; 304 305 mtx_assert(&pool->sp_lock, MA_OWNED); 306 KASSERT(xprt->xp_registered == TRUE, 307 ("xprt_unregister_locked: not registered")); 308 xprt_inactive_locked(xprt); 309 TAILQ_REMOVE(&pool->sp_xlist, xprt, xp_link); 310 xprt->xp_registered = FALSE; 311} 312 313void 314xprt_unregister(SVCXPRT *xprt) 315{ 316 SVCPOOL *pool = xprt->xp_pool; 317 318 mtx_lock(&pool->sp_lock); 319 if (xprt->xp_registered == FALSE) { 320 /* Already unregistered by another thread */ 321 mtx_unlock(&pool->sp_lock); 322 return; 323 } 324 xprt_unregister_locked(xprt); 325 mtx_unlock(&pool->sp_lock); 326 327 SVC_RELEASE(xprt); 328} 329 330/* 331 * Attempt to assign a service thread to this transport. 332 */ 333static int 334xprt_assignthread(SVCXPRT *xprt) 335{ 336 SVCPOOL *pool = xprt->xp_pool; 337 SVCTHREAD *st; 338 339 mtx_assert(&pool->sp_lock, MA_OWNED); 340 st = LIST_FIRST(&pool->sp_idlethreads); 341 if (st) { 342 LIST_REMOVE(st, st_ilink); 343 st->st_idle = FALSE; 344 SVC_ACQUIRE(xprt); 345 xprt->xp_thread = st; 346 st->st_xprt = xprt; 347 cv_signal(&st->st_cond); 348 return (TRUE); 349 } else { 350 /* 351 * See if we can create a new thread. The 352 * actual thread creation happens in 353 * svc_run_internal because our locking state 354 * is poorly defined (we are typically called 355 * from a socket upcall). Don't create more 356 * than one thread per second. 357 */ 358 if (pool->sp_state == SVCPOOL_ACTIVE 359 && pool->sp_lastcreatetime < time_uptime 360 && pool->sp_threadcount < pool->sp_maxthreads) { 361 pool->sp_state = SVCPOOL_THREADWANTED; 362 } 363 } 364 return (FALSE); 365} 366 367void 368xprt_active(SVCXPRT *xprt) 369{ 370 SVCPOOL *pool = xprt->xp_pool; 371 372 mtx_lock(&pool->sp_lock); 373 374 if (!xprt->xp_registered) { 375 /* 376 * Race with xprt_unregister - we lose. 377 */ 378 mtx_unlock(&pool->sp_lock); 379 return; 380 } 381 382 if (!xprt->xp_active) { 383 xprt->xp_active = TRUE; 384 if (xprt->xp_thread == NULL) { 385 if (!svc_request_space_available(pool) || 386 !xprt_assignthread(xprt)) 387 TAILQ_INSERT_TAIL(&pool->sp_active, xprt, 388 xp_alink); 389 } 390 } 391 392 mtx_unlock(&pool->sp_lock); 393} 394 395void 396xprt_inactive_locked(SVCXPRT *xprt) 397{ 398 SVCPOOL *pool = xprt->xp_pool; 399 400 mtx_assert(&pool->sp_lock, MA_OWNED); 401 if (xprt->xp_active) { 402 if (xprt->xp_thread == NULL) 403 TAILQ_REMOVE(&pool->sp_active, xprt, xp_alink); 404 xprt->xp_active = FALSE; 405 } 406} 407 408void 409xprt_inactive(SVCXPRT *xprt) 410{ 411 SVCPOOL *pool = xprt->xp_pool; 412 413 mtx_lock(&pool->sp_lock); 414 xprt_inactive_locked(xprt); 415 mtx_unlock(&pool->sp_lock); 416} 417 418/* 419 * Variant of xprt_inactive() for use only when sure that port is 420 * assigned to thread. For example, withing receive handlers. 421 */ 422void 423xprt_inactive_self(SVCXPRT *xprt) 424{ 425 426 KASSERT(xprt->xp_thread != NULL, 427 ("xprt_inactive_self(%p) with NULL xp_thread", xprt)); 428 xprt->xp_active = FALSE; 429} 430 431/* 432 * Add a service program to the callout list. 433 * The dispatch routine will be called when a rpc request for this 434 * program number comes in. 435 */ 436bool_t 437svc_reg(SVCXPRT *xprt, const rpcprog_t prog, const rpcvers_t vers, 438 void (*dispatch)(struct svc_req *, SVCXPRT *), 439 const struct netconfig *nconf) 440{ 441 SVCPOOL *pool = xprt->xp_pool; 442 struct svc_callout *s; 443 char *netid = NULL; 444 int flag = 0; 445 446/* VARIABLES PROTECTED BY svc_lock: s, svc_head */ 447 448 if (xprt->xp_netid) { 449 netid = strdup(xprt->xp_netid, M_RPC); 450 flag = 1; 451 } else if (nconf && nconf->nc_netid) { 452 netid = strdup(nconf->nc_netid, M_RPC); 453 flag = 1; 454 } /* must have been created with svc_raw_create */ 455 if ((netid == NULL) && (flag == 1)) { 456 return (FALSE); 457 } 458 459 mtx_lock(&pool->sp_lock); 460 if ((s = svc_find(pool, prog, vers, netid)) != NULL) { 461 if (netid) 462 free(netid, M_RPC); 463 if (s->sc_dispatch == dispatch) 464 goto rpcb_it; /* he is registering another xptr */ 465 mtx_unlock(&pool->sp_lock); 466 return (FALSE); 467 } 468 s = malloc(sizeof (struct svc_callout), M_RPC, M_NOWAIT); 469 if (s == NULL) { 470 if (netid) 471 free(netid, M_RPC); 472 mtx_unlock(&pool->sp_lock); 473 return (FALSE); 474 } 475 476 s->sc_prog = prog; 477 s->sc_vers = vers; 478 s->sc_dispatch = dispatch; 479 s->sc_netid = netid; 480 TAILQ_INSERT_TAIL(&pool->sp_callouts, s, sc_link); 481 482 if ((xprt->xp_netid == NULL) && (flag == 1) && netid) 483 ((SVCXPRT *) xprt)->xp_netid = strdup(netid, M_RPC); 484 485rpcb_it: 486 mtx_unlock(&pool->sp_lock); 487 /* now register the information with the local binder service */ 488 if (nconf) { 489 bool_t dummy; 490 struct netconfig tnc; 491 struct netbuf nb; 492 tnc = *nconf; 493 nb.buf = &xprt->xp_ltaddr; 494 nb.len = xprt->xp_ltaddr.ss_len; 495 dummy = rpcb_set(prog, vers, &tnc, &nb); 496 return (dummy); 497 } 498 return (TRUE); 499} 500 501/* 502 * Remove a service program from the callout list. 503 */ 504void 505svc_unreg(SVCPOOL *pool, const rpcprog_t prog, const rpcvers_t vers) 506{ 507 struct svc_callout *s; 508 509 /* unregister the information anyway */ 510 (void) rpcb_unset(prog, vers, NULL); 511 mtx_lock(&pool->sp_lock); 512 while ((s = svc_find(pool, prog, vers, NULL)) != NULL) { 513 TAILQ_REMOVE(&pool->sp_callouts, s, sc_link); 514 if (s->sc_netid) 515 mem_free(s->sc_netid, sizeof (s->sc_netid) + 1); 516 mem_free(s, sizeof (struct svc_callout)); 517 } 518 mtx_unlock(&pool->sp_lock); 519} 520 521/* 522 * Add a service connection loss program to the callout list. 523 * The dispatch routine will be called when some port in ths pool die. 524 */ 525bool_t 526svc_loss_reg(SVCXPRT *xprt, void (*dispatch)(SVCXPRT *)) 527{ 528 SVCPOOL *pool = xprt->xp_pool; 529 struct svc_loss_callout *s; 530 531 mtx_lock(&pool->sp_lock); 532 TAILQ_FOREACH(s, &pool->sp_lcallouts, slc_link) { 533 if (s->slc_dispatch == dispatch) 534 break; 535 } 536 if (s != NULL) { 537 mtx_unlock(&pool->sp_lock); 538 return (TRUE); 539 } 540 s = malloc(sizeof (struct svc_callout), M_RPC, M_NOWAIT); 541 if (s == NULL) { 542 mtx_unlock(&pool->sp_lock); 543 return (FALSE); 544 } 545 s->slc_dispatch = dispatch; 546 TAILQ_INSERT_TAIL(&pool->sp_lcallouts, s, slc_link); 547 mtx_unlock(&pool->sp_lock); 548 return (TRUE); 549} 550 551/* 552 * Remove a service connection loss program from the callout list. 553 */ 554void 555svc_loss_unreg(SVCPOOL *pool, void (*dispatch)(SVCXPRT *)) 556{ 557 struct svc_loss_callout *s; 558 559 mtx_lock(&pool->sp_lock); 560 TAILQ_FOREACH(s, &pool->sp_lcallouts, slc_link) { 561 if (s->slc_dispatch == dispatch) { 562 TAILQ_REMOVE(&pool->sp_lcallouts, s, slc_link); 563 free(s, M_RPC); 564 break; 565 } 566 } 567 mtx_unlock(&pool->sp_lock); 568} 569 570/* ********************** CALLOUT list related stuff ************* */ 571 572/* 573 * Search the callout list for a program number, return the callout 574 * struct. 575 */ 576static struct svc_callout * 577svc_find(SVCPOOL *pool, rpcprog_t prog, rpcvers_t vers, char *netid) 578{ 579 struct svc_callout *s; 580 581 mtx_assert(&pool->sp_lock, MA_OWNED); 582 TAILQ_FOREACH(s, &pool->sp_callouts, sc_link) { 583 if (s->sc_prog == prog && s->sc_vers == vers 584 && (netid == NULL || s->sc_netid == NULL || 585 strcmp(netid, s->sc_netid) == 0)) 586 break; 587 } 588 589 return (s); 590} 591 592/* ******************* REPLY GENERATION ROUTINES ************ */ 593 594static bool_t 595svc_sendreply_common(struct svc_req *rqstp, struct rpc_msg *rply, 596 struct mbuf *body) 597{ 598 SVCXPRT *xprt = rqstp->rq_xprt; 599 bool_t ok; 600 601 if (rqstp->rq_args) { 602 m_freem(rqstp->rq_args); 603 rqstp->rq_args = NULL; 604 } 605 606 if (xprt->xp_pool->sp_rcache) 607 replay_setreply(xprt->xp_pool->sp_rcache, 608 rply, svc_getrpccaller(rqstp), body); 609 610 if (!SVCAUTH_WRAP(&rqstp->rq_auth, &body)) 611 return (FALSE); 612 613 ok = SVC_REPLY(xprt, rply, rqstp->rq_addr, body, &rqstp->rq_reply_seq); 614 if (rqstp->rq_addr) { 615 free(rqstp->rq_addr, M_SONAME); 616 rqstp->rq_addr = NULL; 617 } 618 619 return (ok); 620} 621 622/* 623 * Send a reply to an rpc request 624 */ 625bool_t 626svc_sendreply(struct svc_req *rqstp, xdrproc_t xdr_results, void * xdr_location) 627{ 628 struct rpc_msg rply; 629 struct mbuf *m; 630 XDR xdrs; 631 bool_t ok; 632 633 rply.rm_xid = rqstp->rq_xid; 634 rply.rm_direction = REPLY; 635 rply.rm_reply.rp_stat = MSG_ACCEPTED; 636 rply.acpted_rply.ar_verf = rqstp->rq_verf; 637 rply.acpted_rply.ar_stat = SUCCESS; 638 rply.acpted_rply.ar_results.where = NULL; 639 rply.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void; 640 641 MGET(m, M_WAIT, MT_DATA); 642 MCLGET(m, M_WAIT); 643 m->m_len = 0; 644 xdrmbuf_create(&xdrs, m, XDR_ENCODE); 645 ok = xdr_results(&xdrs, xdr_location); 646 XDR_DESTROY(&xdrs); 647 648 if (ok) { 649 return (svc_sendreply_common(rqstp, &rply, m)); 650 } else { 651 m_freem(m); 652 return (FALSE); 653 } 654} 655 656bool_t 657svc_sendreply_mbuf(struct svc_req *rqstp, struct mbuf *m) 658{ 659 struct rpc_msg rply; 660 661 rply.rm_xid = rqstp->rq_xid; 662 rply.rm_direction = REPLY; 663 rply.rm_reply.rp_stat = MSG_ACCEPTED; 664 rply.acpted_rply.ar_verf = rqstp->rq_verf; 665 rply.acpted_rply.ar_stat = SUCCESS; 666 rply.acpted_rply.ar_results.where = NULL; 667 rply.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void; 668 669 return (svc_sendreply_common(rqstp, &rply, m)); 670} 671 672/* 673 * No procedure error reply 674 */ 675void 676svcerr_noproc(struct svc_req *rqstp) 677{ 678 SVCXPRT *xprt = rqstp->rq_xprt; 679 struct rpc_msg rply; 680 681 rply.rm_xid = rqstp->rq_xid; 682 rply.rm_direction = REPLY; 683 rply.rm_reply.rp_stat = MSG_ACCEPTED; 684 rply.acpted_rply.ar_verf = rqstp->rq_verf; 685 rply.acpted_rply.ar_stat = PROC_UNAVAIL; 686 687 if (xprt->xp_pool->sp_rcache) 688 replay_setreply(xprt->xp_pool->sp_rcache, 689 &rply, svc_getrpccaller(rqstp), NULL); 690 691 svc_sendreply_common(rqstp, &rply, NULL); 692} 693 694/* 695 * Can't decode args error reply 696 */ 697void 698svcerr_decode(struct svc_req *rqstp) 699{ 700 SVCXPRT *xprt = rqstp->rq_xprt; 701 struct rpc_msg rply; 702 703 rply.rm_xid = rqstp->rq_xid; 704 rply.rm_direction = REPLY; 705 rply.rm_reply.rp_stat = MSG_ACCEPTED; 706 rply.acpted_rply.ar_verf = rqstp->rq_verf; 707 rply.acpted_rply.ar_stat = GARBAGE_ARGS; 708 709 if (xprt->xp_pool->sp_rcache) 710 replay_setreply(xprt->xp_pool->sp_rcache, 711 &rply, (struct sockaddr *) &xprt->xp_rtaddr, NULL); 712 713 svc_sendreply_common(rqstp, &rply, NULL); 714} 715 716/* 717 * Some system error 718 */ 719void 720svcerr_systemerr(struct svc_req *rqstp) 721{ 722 SVCXPRT *xprt = rqstp->rq_xprt; 723 struct rpc_msg rply; 724 725 rply.rm_xid = rqstp->rq_xid; 726 rply.rm_direction = REPLY; 727 rply.rm_reply.rp_stat = MSG_ACCEPTED; 728 rply.acpted_rply.ar_verf = rqstp->rq_verf; 729 rply.acpted_rply.ar_stat = SYSTEM_ERR; 730 731 if (xprt->xp_pool->sp_rcache) 732 replay_setreply(xprt->xp_pool->sp_rcache, 733 &rply, svc_getrpccaller(rqstp), NULL); 734 735 svc_sendreply_common(rqstp, &rply, NULL); 736} 737 738/* 739 * Authentication error reply 740 */ 741void 742svcerr_auth(struct svc_req *rqstp, enum auth_stat why) 743{ 744 SVCXPRT *xprt = rqstp->rq_xprt; 745 struct rpc_msg rply; 746 747 rply.rm_xid = rqstp->rq_xid; 748 rply.rm_direction = REPLY; 749 rply.rm_reply.rp_stat = MSG_DENIED; 750 rply.rjcted_rply.rj_stat = AUTH_ERROR; 751 rply.rjcted_rply.rj_why = why; 752 753 if (xprt->xp_pool->sp_rcache) 754 replay_setreply(xprt->xp_pool->sp_rcache, 755 &rply, svc_getrpccaller(rqstp), NULL); 756 757 svc_sendreply_common(rqstp, &rply, NULL); 758} 759 760/* 761 * Auth too weak error reply 762 */ 763void 764svcerr_weakauth(struct svc_req *rqstp) 765{ 766 767 svcerr_auth(rqstp, AUTH_TOOWEAK); 768} 769 770/* 771 * Program unavailable error reply 772 */ 773void 774svcerr_noprog(struct svc_req *rqstp) 775{ 776 SVCXPRT *xprt = rqstp->rq_xprt; 777 struct rpc_msg rply; 778 779 rply.rm_xid = rqstp->rq_xid; 780 rply.rm_direction = REPLY; 781 rply.rm_reply.rp_stat = MSG_ACCEPTED; 782 rply.acpted_rply.ar_verf = rqstp->rq_verf; 783 rply.acpted_rply.ar_stat = PROG_UNAVAIL; 784 785 if (xprt->xp_pool->sp_rcache) 786 replay_setreply(xprt->xp_pool->sp_rcache, 787 &rply, svc_getrpccaller(rqstp), NULL); 788 789 svc_sendreply_common(rqstp, &rply, NULL); 790} 791 792/* 793 * Program version mismatch error reply 794 */ 795void 796svcerr_progvers(struct svc_req *rqstp, rpcvers_t low_vers, rpcvers_t high_vers) 797{ 798 SVCXPRT *xprt = rqstp->rq_xprt; 799 struct rpc_msg rply; 800 801 rply.rm_xid = rqstp->rq_xid; 802 rply.rm_direction = REPLY; 803 rply.rm_reply.rp_stat = MSG_ACCEPTED; 804 rply.acpted_rply.ar_verf = rqstp->rq_verf; 805 rply.acpted_rply.ar_stat = PROG_MISMATCH; 806 rply.acpted_rply.ar_vers.low = (uint32_t)low_vers; 807 rply.acpted_rply.ar_vers.high = (uint32_t)high_vers; 808 809 if (xprt->xp_pool->sp_rcache) 810 replay_setreply(xprt->xp_pool->sp_rcache, 811 &rply, svc_getrpccaller(rqstp), NULL); 812 813 svc_sendreply_common(rqstp, &rply, NULL); 814} 815 816/* 817 * Allocate a new server transport structure. All fields are 818 * initialized to zero and xp_p3 is initialized to point at an 819 * extension structure to hold various flags and authentication 820 * parameters. 821 */ 822SVCXPRT * 823svc_xprt_alloc() 824{ 825 SVCXPRT *xprt; 826 SVCXPRT_EXT *ext; 827 828 xprt = mem_alloc(sizeof(SVCXPRT)); 829 memset(xprt, 0, sizeof(SVCXPRT)); 830 ext = mem_alloc(sizeof(SVCXPRT_EXT)); 831 memset(ext, 0, sizeof(SVCXPRT_EXT)); 832 xprt->xp_p3 = ext; 833 refcount_init(&xprt->xp_refs, 1); 834 835 return (xprt); 836} 837 838/* 839 * Free a server transport structure. 840 */ 841void 842svc_xprt_free(xprt) 843 SVCXPRT *xprt; 844{ 845 846 mem_free(xprt->xp_p3, sizeof(SVCXPRT_EXT)); 847 mem_free(xprt, sizeof(SVCXPRT)); 848} 849 850/* ******************* SERVER INPUT STUFF ******************* */ 851 852/* 853 * Read RPC requests from a transport and queue them to be 854 * executed. We handle authentication and replay cache replies here. 855 * Actually dispatching the RPC is deferred till svc_executereq. 856 */ 857static enum xprt_stat 858svc_getreq(SVCXPRT *xprt, struct svc_req **rqstp_ret) 859{ 860 SVCPOOL *pool = xprt->xp_pool; 861 struct svc_req *r; 862 struct rpc_msg msg; 863 struct mbuf *args; 864 struct svc_loss_callout *s; 865 enum xprt_stat stat; 866 867 /* now receive msgs from xprtprt (support batch calls) */ 868 r = malloc(sizeof(*r), M_RPC, M_WAITOK|M_ZERO); 869 870 msg.rm_call.cb_cred.oa_base = r->rq_credarea; 871 msg.rm_call.cb_verf.oa_base = &r->rq_credarea[MAX_AUTH_BYTES]; 872 r->rq_clntcred = &r->rq_credarea[2*MAX_AUTH_BYTES]; 873 if (SVC_RECV(xprt, &msg, &r->rq_addr, &args)) { 874 enum auth_stat why; 875 876 /* 877 * Handle replays and authenticate before queuing the 878 * request to be executed. 879 */ 880 SVC_ACQUIRE(xprt); 881 r->rq_xprt = xprt; 882 if (pool->sp_rcache) { 883 struct rpc_msg repmsg; 884 struct mbuf *repbody; 885 enum replay_state rs; 886 rs = replay_find(pool->sp_rcache, &msg, 887 svc_getrpccaller(r), &repmsg, &repbody); 888 switch (rs) { 889 case RS_NEW: 890 break; 891 case RS_DONE: 892 SVC_REPLY(xprt, &repmsg, r->rq_addr, 893 repbody, &r->rq_reply_seq); 894 if (r->rq_addr) { 895 free(r->rq_addr, M_SONAME); 896 r->rq_addr = NULL; 897 } 898 m_freem(args); 899 goto call_done; 900 901 default: 902 m_freem(args); 903 goto call_done; 904 } 905 } 906 907 r->rq_xid = msg.rm_xid; 908 r->rq_prog = msg.rm_call.cb_prog; 909 r->rq_vers = msg.rm_call.cb_vers; 910 r->rq_proc = msg.rm_call.cb_proc; 911 r->rq_size = sizeof(*r) + m_length(args, NULL); 912 r->rq_args = args; 913 if ((why = _authenticate(r, &msg)) != AUTH_OK) { 914 /* 915 * RPCSEC_GSS uses this return code 916 * for requests that form part of its 917 * context establishment protocol and 918 * should not be dispatched to the 919 * application. 920 */ 921 if (why != RPCSEC_GSS_NODISPATCH) 922 svcerr_auth(r, why); 923 goto call_done; 924 } 925 926 if (!SVCAUTH_UNWRAP(&r->rq_auth, &r->rq_args)) { 927 svcerr_decode(r); 928 goto call_done; 929 } 930 931 /* 932 * Everything checks out, return request to caller. 933 */ 934 *rqstp_ret = r; 935 r = NULL; 936 } 937call_done: 938 if (r) { 939 svc_freereq(r); 940 r = NULL; 941 } 942 if ((stat = SVC_STAT(xprt)) == XPRT_DIED) { 943 TAILQ_FOREACH(s, &pool->sp_lcallouts, slc_link) 944 (*s->slc_dispatch)(xprt); 945 xprt_unregister(xprt); 946 } 947 948 return (stat); 949} 950 951static void 952svc_executereq(struct svc_req *rqstp) 953{ 954 SVCXPRT *xprt = rqstp->rq_xprt; 955 SVCPOOL *pool = xprt->xp_pool; 956 int prog_found; 957 rpcvers_t low_vers; 958 rpcvers_t high_vers; 959 struct svc_callout *s; 960 961 /* now match message with a registered service*/ 962 prog_found = FALSE; 963 low_vers = (rpcvers_t) -1L; 964 high_vers = (rpcvers_t) 0L; 965 TAILQ_FOREACH(s, &pool->sp_callouts, sc_link) { 966 if (s->sc_prog == rqstp->rq_prog) { 967 if (s->sc_vers == rqstp->rq_vers) { 968 /* 969 * We hand ownership of r to the 970 * dispatch method - they must call 971 * svc_freereq. 972 */ 973 (*s->sc_dispatch)(rqstp, xprt); 974 return; 975 } /* found correct version */ 976 prog_found = TRUE; 977 if (s->sc_vers < low_vers) 978 low_vers = s->sc_vers; 979 if (s->sc_vers > high_vers) 980 high_vers = s->sc_vers; 981 } /* found correct program */ 982 } 983 984 /* 985 * if we got here, the program or version 986 * is not served ... 987 */ 988 if (prog_found) 989 svcerr_progvers(rqstp, low_vers, high_vers); 990 else 991 svcerr_noprog(rqstp); 992 993 svc_freereq(rqstp); 994} 995 996static void 997svc_checkidle(SVCPOOL *pool) 998{ 999 SVCXPRT *xprt, *nxprt; 1000 time_t timo; 1001 struct svcxprt_list cleanup; 1002 1003 TAILQ_INIT(&cleanup); 1004 TAILQ_FOREACH_SAFE(xprt, &pool->sp_xlist, xp_link, nxprt) { 1005 /* 1006 * Only some transports have idle timers. Don't time 1007 * something out which is just waking up. 1008 */ 1009 if (!xprt->xp_idletimeout || xprt->xp_thread) 1010 continue; 1011 1012 timo = xprt->xp_lastactive + xprt->xp_idletimeout; 1013 if (time_uptime > timo) { 1014 xprt_unregister_locked(xprt); 1015 TAILQ_INSERT_TAIL(&cleanup, xprt, xp_link); 1016 } 1017 } 1018 1019 mtx_unlock(&pool->sp_lock); 1020 TAILQ_FOREACH_SAFE(xprt, &cleanup, xp_link, nxprt) { 1021 SVC_RELEASE(xprt); 1022 } 1023 mtx_lock(&pool->sp_lock); 1024 1025} 1026 1027static void 1028svc_assign_waiting_sockets(SVCPOOL *pool) 1029{ 1030 SVCXPRT *xprt; 1031 1032 mtx_lock(&pool->sp_lock); 1033 while ((xprt = TAILQ_FIRST(&pool->sp_active)) != NULL) { 1034 if (xprt_assignthread(xprt)) 1035 TAILQ_REMOVE(&pool->sp_active, xprt, xp_alink); 1036 else 1037 break; 1038 } 1039 mtx_unlock(&pool->sp_lock); 1040} 1041 1042static void 1043svc_change_space_used(SVCPOOL *pool, int delta) 1044{ 1045 unsigned int value; 1046 1047 value = atomic_fetchadd_int(&pool->sp_space_used, delta) + delta; 1048 if (delta > 0) { 1049 if (value >= pool->sp_space_high && !pool->sp_space_throttled) { 1050 pool->sp_space_throttled = TRUE; 1051 pool->sp_space_throttle_count++; 1052 } 1053 if (value > pool->sp_space_used_highest) 1054 pool->sp_space_used_highest = value; 1055 } else { 1056 if (value < pool->sp_space_low && pool->sp_space_throttled) { 1057 pool->sp_space_throttled = FALSE; 1058 svc_assign_waiting_sockets(pool); 1059 } 1060 } 1061} 1062 1063static bool_t 1064svc_request_space_available(SVCPOOL *pool) 1065{ 1066 1067 if (pool->sp_space_throttled) 1068 return (FALSE); 1069 return (TRUE); 1070} 1071 1072static void 1073svc_run_internal(SVCPOOL *pool, bool_t ismaster) 1074{ 1075 struct svc_reqlist reqs; 1076 SVCTHREAD *st, *stpref; 1077 SVCXPRT *xprt; 1078 enum xprt_stat stat; 1079 struct svc_req *rqstp; 1080 size_t sz; 1081 int error; 1082 1083 st = mem_alloc(sizeof(*st)); 1084 st->st_pool = pool; 1085 st->st_xprt = NULL; 1086 STAILQ_INIT(&st->st_reqs); 1087 cv_init(&st->st_cond, "rpcsvc"); 1088 STAILQ_INIT(&reqs); 1089 1090 mtx_lock(&pool->sp_lock); 1091 LIST_INSERT_HEAD(&pool->sp_threads, st, st_link); 1092 1093 /* 1094 * If we are a new thread which was spawned to cope with 1095 * increased load, set the state back to SVCPOOL_ACTIVE. 1096 */ 1097 if (pool->sp_state == SVCPOOL_THREADSTARTING) 1098 pool->sp_state = SVCPOOL_ACTIVE; 1099 1100 while (pool->sp_state != SVCPOOL_CLOSING) { 1101 /* 1102 * Create new thread if requested. 1103 */ 1104 if (pool->sp_state == SVCPOOL_THREADWANTED) { 1105 pool->sp_state = SVCPOOL_THREADSTARTING; 1106 pool->sp_lastcreatetime = time_uptime; 1107 mtx_unlock(&pool->sp_lock); 1108 svc_new_thread(pool); 1109 mtx_lock(&pool->sp_lock); 1110 continue; 1111 } 1112 1113 /* 1114 * Check for idle transports once per second. 1115 */ 1116 if (time_uptime > pool->sp_lastidlecheck) { 1117 pool->sp_lastidlecheck = time_uptime; 1118 svc_checkidle(pool); 1119 } 1120 1121 xprt = st->st_xprt; 1122 if (!xprt && STAILQ_EMPTY(&st->st_reqs)) { 1123 /* 1124 * Enforce maxthreads count. 1125 */ 1126 if (pool->sp_threadcount > pool->sp_maxthreads) 1127 break; 1128 1129 /* 1130 * Before sleeping, see if we can find an 1131 * active transport which isn't being serviced 1132 * by a thread. 1133 */ 1134 if (svc_request_space_available(pool) && 1135 (xprt = TAILQ_FIRST(&pool->sp_active)) != NULL) { 1136 TAILQ_REMOVE(&pool->sp_active, xprt, xp_alink); 1137 SVC_ACQUIRE(xprt); 1138 xprt->xp_thread = st; 1139 st->st_xprt = xprt; 1140 continue; 1141 } 1142 1143 LIST_INSERT_HEAD(&pool->sp_idlethreads, st, st_ilink); 1144 st->st_idle = TRUE; 1145 if (ismaster || (!ismaster && 1146 pool->sp_threadcount > pool->sp_minthreads)) 1147 error = cv_timedwait_sig(&st->st_cond, 1148 &pool->sp_lock, 5 * hz); 1149 else 1150 error = cv_wait_sig(&st->st_cond, 1151 &pool->sp_lock); 1152 if (st->st_idle) { 1153 LIST_REMOVE(st, st_ilink); 1154 st->st_idle = FALSE; 1155 } 1156 1157 /* 1158 * Reduce worker thread count when idle. 1159 */ 1160 if (error == EWOULDBLOCK) { 1161 if (!ismaster 1162 && (pool->sp_threadcount 1163 > pool->sp_minthreads) 1164 && !st->st_xprt 1165 && STAILQ_EMPTY(&st->st_reqs)) 1166 break; 1167 } else if (error) { 1168 mtx_unlock(&pool->sp_lock); 1169 svc_exit(pool); 1170 mtx_lock(&pool->sp_lock); 1171 break; 1172 } 1173 continue; 1174 } 1175 1176 if (xprt) { 1177 /* 1178 * Drain the transport socket and queue up any 1179 * RPCs. 1180 */ 1181 xprt->xp_lastactive = time_uptime; 1182 do { 1183 if (!svc_request_space_available(pool)) 1184 break; 1185 mtx_unlock(&pool->sp_lock); 1186 rqstp = NULL; 1187 stat = svc_getreq(xprt, &rqstp); 1188 if (rqstp) { 1189 svc_change_space_used(pool, rqstp->rq_size); 1190 /* 1191 * See if the application has 1192 * a preference for some other 1193 * thread. 1194 */ 1195 stpref = st; 1196 if (pool->sp_assign) 1197 stpref = pool->sp_assign(st, 1198 rqstp); 1199 else 1200 mtx_lock(&pool->sp_lock); 1201 1202 rqstp->rq_thread = stpref; 1203 STAILQ_INSERT_TAIL(&stpref->st_reqs, 1204 rqstp, rq_link); 1205 1206 /* 1207 * If we assigned the request 1208 * to another thread, make 1209 * sure its awake and continue 1210 * reading from the 1211 * socket. Otherwise, try to 1212 * find some other thread to 1213 * read from the socket and 1214 * execute the request 1215 * immediately. 1216 */ 1217 if (stpref == st) 1218 break; 1219 if (stpref->st_idle) { 1220 LIST_REMOVE(stpref, st_ilink); 1221 stpref->st_idle = FALSE; 1222 cv_signal(&stpref->st_cond); 1223 } 1224 } else 1225 mtx_lock(&pool->sp_lock); 1226 } while (stat == XPRT_MOREREQS 1227 && pool->sp_state != SVCPOOL_CLOSING); 1228 1229 /* 1230 * Move this transport to the end of the 1231 * active list to ensure fairness when 1232 * multiple transports are active. If this was 1233 * the last queued request, svc_getreq will 1234 * end up calling xprt_inactive to remove from 1235 * the active list. 1236 */ 1237 xprt->xp_thread = NULL; 1238 st->st_xprt = NULL; 1239 if (xprt->xp_active) { 1240 if (!svc_request_space_available(pool) || 1241 !xprt_assignthread(xprt)) 1242 TAILQ_INSERT_TAIL(&pool->sp_active, 1243 xprt, xp_alink); 1244 } 1245 STAILQ_CONCAT(&reqs, &st->st_reqs); 1246 mtx_unlock(&pool->sp_lock); 1247 SVC_RELEASE(xprt); 1248 } else { 1249 STAILQ_CONCAT(&reqs, &st->st_reqs); 1250 mtx_unlock(&pool->sp_lock); 1251 } 1252 1253 /* 1254 * Execute what we have queued. 1255 */ 1256 sz = 0; 1257 while ((rqstp = STAILQ_FIRST(&reqs)) != NULL) { 1258 STAILQ_REMOVE_HEAD(&reqs, rq_link); 1259 sz += rqstp->rq_size; 1260 svc_executereq(rqstp); 1261 } 1262 svc_change_space_used(pool, -sz); 1263 mtx_lock(&pool->sp_lock); 1264 } 1265 1266 if (st->st_xprt) { 1267 xprt = st->st_xprt; 1268 st->st_xprt = NULL; 1269 SVC_RELEASE(xprt); 1270 } 1271 1272 KASSERT(STAILQ_EMPTY(&st->st_reqs), ("stray reqs on exit")); 1273 LIST_REMOVE(st, st_link); 1274 pool->sp_threadcount--; 1275 1276 mtx_unlock(&pool->sp_lock); 1277 1278 cv_destroy(&st->st_cond); 1279 mem_free(st, sizeof(*st)); 1280 1281 if (!ismaster) 1282 wakeup(pool); 1283} 1284 1285static void 1286svc_thread_start(void *arg) 1287{ 1288 1289 svc_run_internal((SVCPOOL *) arg, FALSE); 1290 kthread_exit(); 1291} 1292 1293static void 1294svc_new_thread(SVCPOOL *pool) 1295{ 1296 struct thread *td; 1297 1298 pool->sp_threadcount++; 1299 kthread_add(svc_thread_start, pool, 1300 pool->sp_proc, &td, 0, 0, 1301 "%s: service", pool->sp_name); 1302} 1303 1304void 1305svc_run(SVCPOOL *pool) 1306{ 1307 int i; 1308 struct proc *p; 1309 struct thread *td; 1310 1311 p = curproc; 1312 td = curthread; 1313 snprintf(td->td_name, sizeof(td->td_name), 1314 "%s: master", pool->sp_name); 1315 pool->sp_state = SVCPOOL_ACTIVE; 1316 pool->sp_proc = p; 1317 pool->sp_lastcreatetime = time_uptime; 1318 pool->sp_threadcount = 1; 1319 1320 for (i = 1; i < pool->sp_minthreads; i++) { 1321 svc_new_thread(pool); 1322 } 1323 1324 svc_run_internal(pool, TRUE); 1325 1326 mtx_lock(&pool->sp_lock); 1327 while (pool->sp_threadcount > 0) 1328 msleep(pool, &pool->sp_lock, 0, "svcexit", 0); 1329 mtx_unlock(&pool->sp_lock); 1330} 1331 1332void 1333svc_exit(SVCPOOL *pool) 1334{ 1335 SVCTHREAD *st; 1336 1337 mtx_lock(&pool->sp_lock); 1338 1339 if (pool->sp_state != SVCPOOL_CLOSING) { 1340 pool->sp_state = SVCPOOL_CLOSING; 1341 LIST_FOREACH(st, &pool->sp_idlethreads, st_ilink) 1342 cv_signal(&st->st_cond); 1343 } 1344 1345 mtx_unlock(&pool->sp_lock); 1346} 1347 1348bool_t 1349svc_getargs(struct svc_req *rqstp, xdrproc_t xargs, void *args) 1350{ 1351 struct mbuf *m; 1352 XDR xdrs; 1353 bool_t stat; 1354 1355 m = rqstp->rq_args; 1356 rqstp->rq_args = NULL; 1357 1358 xdrmbuf_create(&xdrs, m, XDR_DECODE); 1359 stat = xargs(&xdrs, args); 1360 XDR_DESTROY(&xdrs); 1361 1362 return (stat); 1363} 1364 1365bool_t 1366svc_freeargs(struct svc_req *rqstp, xdrproc_t xargs, void *args) 1367{ 1368 XDR xdrs; 1369 1370 if (rqstp->rq_addr) { 1371 free(rqstp->rq_addr, M_SONAME); 1372 rqstp->rq_addr = NULL; 1373 } 1374 1375 xdrs.x_op = XDR_FREE; 1376 return (xargs(&xdrs, args)); 1377} 1378 1379void 1380svc_freereq(struct svc_req *rqstp) 1381{ 1382 SVCTHREAD *st; 1383 SVCPOOL *pool; 1384 1385 st = rqstp->rq_thread; 1386 if (st) { 1387 pool = st->st_pool; 1388 if (pool->sp_done) 1389 pool->sp_done(st, rqstp); 1390 } 1391 1392 if (rqstp->rq_auth.svc_ah_ops) 1393 SVCAUTH_RELEASE(&rqstp->rq_auth); 1394 1395 if (rqstp->rq_xprt) { 1396 SVC_RELEASE(rqstp->rq_xprt); 1397 } 1398 1399 if (rqstp->rq_addr) 1400 free(rqstp->rq_addr, M_SONAME); 1401 1402 if (rqstp->rq_args) 1403 m_freem(rqstp->rq_args); 1404 1405 free(rqstp, M_RPC); 1406} 1407