clnt_rc.c revision 244008
1177633Sdfr/*- 2177633Sdfr * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 3177633Sdfr * Authors: Doug Rabson <dfr@rabson.org> 4177633Sdfr * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 5177633Sdfr * 6177633Sdfr * Redistribution and use in source and binary forms, with or without 7177633Sdfr * modification, are permitted provided that the following conditions 8177633Sdfr * are met: 9177633Sdfr * 1. Redistributions of source code must retain the above copyright 10177633Sdfr * notice, this list of conditions and the following disclaimer. 11177633Sdfr * 2. Redistributions in binary form must reproduce the above copyright 12177633Sdfr * notice, this list of conditions and the following disclaimer in the 13177633Sdfr * documentation and/or other materials provided with the distribution. 14177633Sdfr * 15177633Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16177633Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17177633Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18177633Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19177633Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20177633Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21177633Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22177633Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23177633Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24177633Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25177633Sdfr * SUCH DAMAGE. 26177633Sdfr */ 27177633Sdfr 28177633Sdfr#include <sys/cdefs.h> 29177633Sdfr__FBSDID("$FreeBSD: head/sys/rpc/clnt_rc.c 244008 2012-12-08 00:29:16Z rmacklem $"); 30177633Sdfr 31177633Sdfr#include <sys/param.h> 32177633Sdfr#include <sys/systm.h> 33184588Sdfr#include <sys/kernel.h> 34180025Sdfr#include <sys/limits.h> 35177633Sdfr#include <sys/lock.h> 36177633Sdfr#include <sys/malloc.h> 37177633Sdfr#include <sys/mbuf.h> 38177633Sdfr#include <sys/mutex.h> 39177633Sdfr#include <sys/pcpu.h> 40177633Sdfr#include <sys/proc.h> 41177633Sdfr#include <sys/socket.h> 42177633Sdfr#include <sys/socketvar.h> 43177633Sdfr#include <sys/time.h> 44177633Sdfr#include <sys/uio.h> 45177633Sdfr 46177633Sdfr#include <rpc/rpc.h> 47177685Sdfr#include <rpc/rpc_com.h> 48244008Srmacklem#include <rpc/krpc.h> 49177633Sdfr 50180025Sdfrstatic enum clnt_stat clnt_reconnect_call(CLIENT *, struct rpc_callextra *, 51184588Sdfr rpcproc_t, struct mbuf *, struct mbuf **, struct timeval); 52177633Sdfrstatic void clnt_reconnect_geterr(CLIENT *, struct rpc_err *); 53177633Sdfrstatic bool_t clnt_reconnect_freeres(CLIENT *, xdrproc_t, void *); 54177633Sdfrstatic void clnt_reconnect_abort(CLIENT *); 55177633Sdfrstatic bool_t clnt_reconnect_control(CLIENT *, u_int, void *); 56184588Sdfrstatic void clnt_reconnect_close(CLIENT *); 57177633Sdfrstatic void clnt_reconnect_destroy(CLIENT *); 58177633Sdfr 59177633Sdfrstatic struct clnt_ops clnt_reconnect_ops = { 60177633Sdfr .cl_call = clnt_reconnect_call, 61177633Sdfr .cl_abort = clnt_reconnect_abort, 62177633Sdfr .cl_geterr = clnt_reconnect_geterr, 63177633Sdfr .cl_freeres = clnt_reconnect_freeres, 64184588Sdfr .cl_close = clnt_reconnect_close, 65177633Sdfr .cl_destroy = clnt_reconnect_destroy, 66177633Sdfr .cl_control = clnt_reconnect_control 67177633Sdfr}; 68177633Sdfr 69184588Sdfrstatic int fake_wchan; 70184588Sdfr 71177633SdfrCLIENT * 72177633Sdfrclnt_reconnect_create( 73177633Sdfr struct netconfig *nconf, /* network type */ 74177633Sdfr struct sockaddr *svcaddr, /* servers address */ 75177633Sdfr rpcprog_t program, /* program number */ 76177633Sdfr rpcvers_t version, /* version number */ 77177633Sdfr size_t sendsz, /* buffer recv size */ 78177633Sdfr size_t recvsz) /* buffer send size */ 79177633Sdfr{ 80177633Sdfr CLIENT *cl = NULL; /* client handle */ 81177633Sdfr struct rc_data *rc = NULL; /* private data */ 82177633Sdfr 83177633Sdfr if (svcaddr == NULL) { 84177633Sdfr rpc_createerr.cf_stat = RPC_UNKNOWNADDR; 85177633Sdfr return (NULL); 86177633Sdfr } 87177633Sdfr 88177633Sdfr cl = mem_alloc(sizeof (CLIENT)); 89177633Sdfr rc = mem_alloc(sizeof (*rc)); 90180025Sdfr mtx_init(&rc->rc_lock, "rc->rc_lock", NULL, MTX_DEF); 91177633Sdfr (void) memcpy(&rc->rc_addr, svcaddr, (size_t)svcaddr->sa_len); 92177633Sdfr rc->rc_nconf = nconf; 93177633Sdfr rc->rc_prog = program; 94177633Sdfr rc->rc_vers = version; 95177633Sdfr rc->rc_sendsz = sendsz; 96177633Sdfr rc->rc_recvsz = recvsz; 97177633Sdfr rc->rc_timeout.tv_sec = -1; 98177633Sdfr rc->rc_timeout.tv_usec = -1; 99180025Sdfr rc->rc_retry.tv_sec = 3; 100177633Sdfr rc->rc_retry.tv_usec = 0; 101180025Sdfr rc->rc_retries = INT_MAX; 102184588Sdfr rc->rc_privport = FALSE; 103177633Sdfr rc->rc_waitchan = "rpcrecv"; 104177633Sdfr rc->rc_intr = 0; 105180025Sdfr rc->rc_connecting = FALSE; 106184588Sdfr rc->rc_closed = FALSE; 107184588Sdfr rc->rc_ucred = crdup(curthread->td_ucred); 108177633Sdfr rc->rc_client = NULL; 109177633Sdfr 110180025Sdfr cl->cl_refs = 1; 111177633Sdfr cl->cl_ops = &clnt_reconnect_ops; 112177633Sdfr cl->cl_private = (caddr_t)(void *)rc; 113177633Sdfr cl->cl_auth = authnone_create(); 114177633Sdfr cl->cl_tp = NULL; 115177633Sdfr cl->cl_netid = NULL; 116177633Sdfr return (cl); 117177633Sdfr} 118177633Sdfr 119177633Sdfrstatic enum clnt_stat 120177633Sdfrclnt_reconnect_connect(CLIENT *cl) 121177633Sdfr{ 122184588Sdfr struct thread *td = curthread; 123177633Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 124177633Sdfr struct socket *so; 125180025Sdfr enum clnt_stat stat; 126180025Sdfr int error; 127177633Sdfr int one = 1; 128184588Sdfr struct ucred *oldcred; 129194934Srmacklem CLIENT *newclient = NULL; 130177633Sdfr 131180025Sdfr mtx_lock(&rc->rc_lock); 132194934Srmacklem while (rc->rc_connecting) { 133194934Srmacklem error = msleep(rc, &rc->rc_lock, 134194934Srmacklem rc->rc_intr ? PCATCH : 0, "rpcrecon", 0); 135194934Srmacklem if (error) { 136194934Srmacklem mtx_unlock(&rc->rc_lock); 137194934Srmacklem return (RPC_INTR); 138194934Srmacklem } 139194934Srmacklem } 140184588Sdfr if (rc->rc_closed) { 141184588Sdfr mtx_unlock(&rc->rc_lock); 142184588Sdfr return (RPC_CANTSEND); 143184588Sdfr } 144194934Srmacklem if (rc->rc_client) { 145180025Sdfr mtx_unlock(&rc->rc_lock); 146180025Sdfr return (RPC_SUCCESS); 147180025Sdfr } 148194934Srmacklem 149194934Srmacklem /* 150194934Srmacklem * My turn to attempt a connect. The rc_connecting variable 151194934Srmacklem * serializes the following code sequence, so it is guaranteed 152194934Srmacklem * that rc_client will still be NULL after it is re-locked below, 153194934Srmacklem * since that is the only place it is set non-NULL. 154194934Srmacklem */ 155194934Srmacklem rc->rc_connecting = TRUE; 156180025Sdfr mtx_unlock(&rc->rc_lock); 157180025Sdfr 158196503Szec oldcred = td->td_ucred; 159196503Szec td->td_ucred = rc->rc_ucred; 160177633Sdfr so = __rpc_nconf2socket(rc->rc_nconf); 161177633Sdfr if (!so) { 162180025Sdfr stat = rpc_createerr.cf_stat = RPC_TLIERROR; 163177633Sdfr rpc_createerr.cf_error.re_errno = 0; 164196503Szec td->td_ucred = oldcred; 165180025Sdfr goto out; 166177633Sdfr } 167188142Sdfr 168184588Sdfr if (rc->rc_privport) 169184588Sdfr bindresvport(so, NULL); 170177633Sdfr 171177633Sdfr if (rc->rc_nconf->nc_semantics == NC_TPI_CLTS) 172194934Srmacklem newclient = clnt_dg_create(so, 173177633Sdfr (struct sockaddr *) &rc->rc_addr, rc->rc_prog, rc->rc_vers, 174177633Sdfr rc->rc_sendsz, rc->rc_recvsz); 175177633Sdfr else 176194934Srmacklem newclient = clnt_vc_create(so, 177177633Sdfr (struct sockaddr *) &rc->rc_addr, rc->rc_prog, rc->rc_vers, 178221127Srmacklem rc->rc_sendsz, rc->rc_recvsz, rc->rc_intr); 179184588Sdfr td->td_ucred = oldcred; 180177633Sdfr 181194934Srmacklem if (!newclient) { 182184588Sdfr soclose(so); 183184588Sdfr rc->rc_err = rpc_createerr.cf_error; 184180025Sdfr stat = rpc_createerr.cf_stat; 185180025Sdfr goto out; 186180025Sdfr } 187178112Sdfr 188194934Srmacklem CLNT_CONTROL(newclient, CLSET_FD_CLOSE, 0); 189194934Srmacklem CLNT_CONTROL(newclient, CLSET_CONNECT, &one); 190194934Srmacklem CLNT_CONTROL(newclient, CLSET_TIMEOUT, &rc->rc_timeout); 191194934Srmacklem CLNT_CONTROL(newclient, CLSET_RETRY_TIMEOUT, &rc->rc_retry); 192194934Srmacklem CLNT_CONTROL(newclient, CLSET_WAITCHAN, rc->rc_waitchan); 193194934Srmacklem CLNT_CONTROL(newclient, CLSET_INTERRUPTIBLE, &rc->rc_intr); 194244008Srmacklem if (rc->rc_backchannel != NULL) 195244008Srmacklem CLNT_CONTROL(newclient, CLSET_BACKCHANNEL, rc->rc_backchannel); 196180025Sdfr stat = RPC_SUCCESS; 197177633Sdfr 198180025Sdfrout: 199180025Sdfr mtx_lock(&rc->rc_lock); 200194934Srmacklem KASSERT(rc->rc_client == NULL, ("rc_client not null")); 201194934Srmacklem if (!rc->rc_closed) { 202194934Srmacklem rc->rc_client = newclient; 203194934Srmacklem newclient = NULL; 204184588Sdfr } 205180025Sdfr rc->rc_connecting = FALSE; 206180025Sdfr wakeup(rc); 207180025Sdfr mtx_unlock(&rc->rc_lock); 208180025Sdfr 209194934Srmacklem if (newclient) { 210194934Srmacklem /* 211194934Srmacklem * It has been closed, so discard the new client. 212194934Srmacklem * nb: clnt_[dg|vc]_close()/clnt_[dg|vc]_destroy() cannot 213194934Srmacklem * be called with the rc_lock mutex held, since they may 214194934Srmacklem * msleep() while holding a different mutex. 215194934Srmacklem */ 216194934Srmacklem CLNT_CLOSE(newclient); 217194934Srmacklem CLNT_RELEASE(newclient); 218194934Srmacklem } 219194934Srmacklem 220180025Sdfr return (stat); 221177633Sdfr} 222177633Sdfr 223177633Sdfrstatic enum clnt_stat 224177633Sdfrclnt_reconnect_call( 225180025Sdfr CLIENT *cl, /* client handle */ 226180025Sdfr struct rpc_callextra *ext, /* call metadata */ 227177633Sdfr rpcproc_t proc, /* procedure number */ 228184588Sdfr struct mbuf *args, /* pointer to args */ 229184588Sdfr struct mbuf **resultsp, /* pointer to results */ 230184588Sdfr struct timeval utimeout) 231177633Sdfr{ 232177633Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 233180025Sdfr CLIENT *client; 234177633Sdfr enum clnt_stat stat; 235194934Srmacklem int tries, error; 236177633Sdfr 237180025Sdfr tries = 0; 238177633Sdfr do { 239194934Srmacklem mtx_lock(&rc->rc_lock); 240184588Sdfr if (rc->rc_closed) { 241194934Srmacklem mtx_unlock(&rc->rc_lock); 242184588Sdfr return (RPC_CANTSEND); 243184588Sdfr } 244184588Sdfr 245178112Sdfr if (!rc->rc_client) { 246194934Srmacklem mtx_unlock(&rc->rc_lock); 247178112Sdfr stat = clnt_reconnect_connect(cl); 248184588Sdfr if (stat == RPC_SYSTEMERROR) { 249194934Srmacklem error = tsleep(&fake_wchan, 250195703Skib rc->rc_intr ? PCATCH | PBDRY : 0, "rpccon", 251195703Skib hz); 252194934Srmacklem if (error == EINTR || error == ERESTART) 253194934Srmacklem return (RPC_INTR); 254184588Sdfr tries++; 255184588Sdfr if (tries >= rc->rc_retries) 256184588Sdfr return (stat); 257184588Sdfr continue; 258184588Sdfr } 259178112Sdfr if (stat != RPC_SUCCESS) 260178112Sdfr return (stat); 261194934Srmacklem mtx_lock(&rc->rc_lock); 262178112Sdfr } 263177633Sdfr 264184588Sdfr if (!rc->rc_client) { 265184588Sdfr mtx_unlock(&rc->rc_lock); 266184588Sdfr stat = RPC_FAILED; 267184588Sdfr continue; 268184588Sdfr } 269180025Sdfr CLNT_ACQUIRE(rc->rc_client); 270180025Sdfr client = rc->rc_client; 271180025Sdfr mtx_unlock(&rc->rc_lock); 272184588Sdfr stat = CLNT_CALL_MBUF(client, ext, proc, args, 273184588Sdfr resultsp, utimeout); 274177633Sdfr 275184588Sdfr if (stat != RPC_SUCCESS) { 276184588Sdfr if (!ext) 277184588Sdfr CLNT_GETERR(client, &rc->rc_err); 278184588Sdfr } 279184588Sdfr 280177633Sdfr if (stat == RPC_TIMEDOUT) { 281177633Sdfr /* 282177633Sdfr * Check for async send misfeature for NLM 283177633Sdfr * protocol. 284177633Sdfr */ 285177633Sdfr if ((rc->rc_timeout.tv_sec == 0 286177633Sdfr && rc->rc_timeout.tv_usec == 0) 287177633Sdfr || (rc->rc_timeout.tv_sec == -1 288177633Sdfr && utimeout.tv_sec == 0 289180025Sdfr && utimeout.tv_usec == 0)) { 290194934Srmacklem CLNT_RELEASE(client); 291177633Sdfr break; 292180025Sdfr } 293177633Sdfr } 294177633Sdfr 295184588Sdfr if (stat == RPC_TIMEDOUT || stat == RPC_CANTSEND 296184588Sdfr || stat == RPC_CANTRECV) { 297180025Sdfr tries++; 298194934Srmacklem if (tries >= rc->rc_retries) { 299194934Srmacklem CLNT_RELEASE(client); 300180025Sdfr break; 301194934Srmacklem } 302180025Sdfr 303180025Sdfr if (ext && ext->rc_feedback) 304180025Sdfr ext->rc_feedback(FEEDBACK_RECONNECT, proc, 305180025Sdfr ext->rc_feedback_arg); 306180025Sdfr 307180025Sdfr mtx_lock(&rc->rc_lock); 308180025Sdfr /* 309180025Sdfr * Make sure that someone else hasn't already 310194934Srmacklem * reconnected by checking if rc_client has changed. 311194934Srmacklem * If not, we are done with the client and must 312194934Srmacklem * do CLNT_RELEASE(client) twice to dispose of it, 313194934Srmacklem * because there is both an initial refcnt and one 314194934Srmacklem * acquired by CLNT_ACQUIRE() above. 315180025Sdfr */ 316180025Sdfr if (rc->rc_client == client) { 317180025Sdfr rc->rc_client = NULL; 318194934Srmacklem mtx_unlock(&rc->rc_lock); 319194934Srmacklem CLNT_RELEASE(client); 320194934Srmacklem } else { 321194934Srmacklem mtx_unlock(&rc->rc_lock); 322180025Sdfr } 323194934Srmacklem CLNT_RELEASE(client); 324184588Sdfr } else { 325194934Srmacklem CLNT_RELEASE(client); 326184588Sdfr break; 327177633Sdfr } 328177633Sdfr } while (stat != RPC_SUCCESS); 329177633Sdfr 330184588Sdfr KASSERT(stat != RPC_SUCCESS || *resultsp, 331184588Sdfr ("RPC_SUCCESS without reply")); 332184588Sdfr 333177633Sdfr return (stat); 334177633Sdfr} 335177633Sdfr 336177633Sdfrstatic void 337177633Sdfrclnt_reconnect_geterr(CLIENT *cl, struct rpc_err *errp) 338177633Sdfr{ 339177633Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 340177633Sdfr 341184588Sdfr *errp = rc->rc_err; 342177633Sdfr} 343177633Sdfr 344194934Srmacklem/* 345194934Srmacklem * Since this function requires that rc_client be valid, it can 346194934Srmacklem * only be called when that is guaranteed to be the case. 347194934Srmacklem */ 348177633Sdfrstatic bool_t 349177633Sdfrclnt_reconnect_freeres(CLIENT *cl, xdrproc_t xdr_res, void *res_ptr) 350177633Sdfr{ 351177633Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 352177633Sdfr 353177633Sdfr return (CLNT_FREERES(rc->rc_client, xdr_res, res_ptr)); 354177633Sdfr} 355177633Sdfr 356177633Sdfr/*ARGSUSED*/ 357177633Sdfrstatic void 358177633Sdfrclnt_reconnect_abort(CLIENT *h) 359177633Sdfr{ 360177633Sdfr} 361177633Sdfr 362194934Srmacklem/* 363194934Srmacklem * CLNT_CONTROL() on the client returned by clnt_reconnect_create() must 364194934Srmacklem * always be called before CLNT_CALL_MBUF() by a single thread only. 365194934Srmacklem */ 366177633Sdfrstatic bool_t 367177633Sdfrclnt_reconnect_control(CLIENT *cl, u_int request, void *info) 368177633Sdfr{ 369177633Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 370244008Srmacklem SVCXPRT *xprt; 371177633Sdfr 372177633Sdfr if (info == NULL) { 373177633Sdfr return (FALSE); 374177633Sdfr } 375177633Sdfr switch (request) { 376177633Sdfr case CLSET_TIMEOUT: 377177633Sdfr rc->rc_timeout = *(struct timeval *)info; 378177633Sdfr if (rc->rc_client) 379177633Sdfr CLNT_CONTROL(rc->rc_client, request, info); 380177633Sdfr break; 381177633Sdfr 382177633Sdfr case CLGET_TIMEOUT: 383177633Sdfr *(struct timeval *)info = rc->rc_timeout; 384177633Sdfr break; 385177633Sdfr 386177633Sdfr case CLSET_RETRY_TIMEOUT: 387177633Sdfr rc->rc_retry = *(struct timeval *)info; 388177633Sdfr if (rc->rc_client) 389177633Sdfr CLNT_CONTROL(rc->rc_client, request, info); 390177633Sdfr break; 391177633Sdfr 392177633Sdfr case CLGET_RETRY_TIMEOUT: 393177633Sdfr *(struct timeval *)info = rc->rc_retry; 394177633Sdfr break; 395177633Sdfr 396177633Sdfr case CLGET_VERS: 397177633Sdfr *(uint32_t *)info = rc->rc_vers; 398177633Sdfr break; 399177633Sdfr 400177633Sdfr case CLSET_VERS: 401177633Sdfr rc->rc_vers = *(uint32_t *) info; 402177633Sdfr if (rc->rc_client) 403177633Sdfr CLNT_CONTROL(rc->rc_client, CLSET_VERS, info); 404177633Sdfr break; 405177633Sdfr 406177633Sdfr case CLGET_PROG: 407177633Sdfr *(uint32_t *)info = rc->rc_prog; 408177633Sdfr break; 409177633Sdfr 410177633Sdfr case CLSET_PROG: 411177633Sdfr rc->rc_prog = *(uint32_t *) info; 412177633Sdfr if (rc->rc_client) 413177633Sdfr CLNT_CONTROL(rc->rc_client, request, info); 414177633Sdfr break; 415177633Sdfr 416177633Sdfr case CLSET_WAITCHAN: 417184588Sdfr rc->rc_waitchan = (char *)info; 418177633Sdfr if (rc->rc_client) 419177633Sdfr CLNT_CONTROL(rc->rc_client, request, info); 420177633Sdfr break; 421177633Sdfr 422177633Sdfr case CLGET_WAITCHAN: 423177633Sdfr *(const char **) info = rc->rc_waitchan; 424177633Sdfr break; 425177633Sdfr 426177633Sdfr case CLSET_INTERRUPTIBLE: 427177633Sdfr rc->rc_intr = *(int *) info; 428177633Sdfr if (rc->rc_client) 429177633Sdfr CLNT_CONTROL(rc->rc_client, request, info); 430177633Sdfr break; 431177633Sdfr 432177633Sdfr case CLGET_INTERRUPTIBLE: 433177633Sdfr *(int *) info = rc->rc_intr; 434177633Sdfr break; 435177633Sdfr 436180025Sdfr case CLSET_RETRIES: 437180025Sdfr rc->rc_retries = *(int *) info; 438180025Sdfr break; 439180025Sdfr 440180025Sdfr case CLGET_RETRIES: 441180025Sdfr *(int *) info = rc->rc_retries; 442180025Sdfr break; 443180025Sdfr 444184588Sdfr case CLSET_PRIVPORT: 445184588Sdfr rc->rc_privport = *(int *) info; 446184588Sdfr break; 447184588Sdfr 448184588Sdfr case CLGET_PRIVPORT: 449184588Sdfr *(int *) info = rc->rc_privport; 450184588Sdfr break; 451184588Sdfr 452244008Srmacklem case CLSET_BACKCHANNEL: 453244008Srmacklem xprt = (SVCXPRT *)info; 454244008Srmacklem SVC_ACQUIRE(xprt); 455244008Srmacklem xprt_register(xprt); 456244008Srmacklem rc->rc_backchannel = info; 457244008Srmacklem break; 458244008Srmacklem 459177633Sdfr default: 460177633Sdfr return (FALSE); 461177633Sdfr } 462177633Sdfr 463177633Sdfr return (TRUE); 464177633Sdfr} 465177633Sdfr 466177633Sdfrstatic void 467184588Sdfrclnt_reconnect_close(CLIENT *cl) 468184588Sdfr{ 469184588Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 470184588Sdfr CLIENT *client; 471184588Sdfr 472184588Sdfr mtx_lock(&rc->rc_lock); 473184588Sdfr 474184588Sdfr if (rc->rc_closed) { 475184588Sdfr mtx_unlock(&rc->rc_lock); 476184588Sdfr return; 477184588Sdfr } 478184588Sdfr 479184588Sdfr rc->rc_closed = TRUE; 480184588Sdfr client = rc->rc_client; 481184588Sdfr rc->rc_client = NULL; 482184588Sdfr 483184588Sdfr mtx_unlock(&rc->rc_lock); 484184588Sdfr 485184588Sdfr if (client) { 486184588Sdfr CLNT_CLOSE(client); 487184588Sdfr CLNT_RELEASE(client); 488184588Sdfr } 489184588Sdfr} 490184588Sdfr 491184588Sdfrstatic void 492177633Sdfrclnt_reconnect_destroy(CLIENT *cl) 493177633Sdfr{ 494177633Sdfr struct rc_data *rc = (struct rc_data *)cl->cl_private; 495244008Srmacklem SVCXPRT *xprt; 496177633Sdfr 497177633Sdfr if (rc->rc_client) 498177633Sdfr CLNT_DESTROY(rc->rc_client); 499244008Srmacklem if (rc->rc_backchannel) { 500244008Srmacklem xprt = (SVCXPRT *)rc->rc_backchannel; 501244008Srmacklem xprt_unregister(xprt); 502244008Srmacklem SVC_RELEASE(xprt); 503244008Srmacklem } 504184588Sdfr crfree(rc->rc_ucred); 505181684Sdfr mtx_destroy(&rc->rc_lock); 506177633Sdfr mem_free(rc, sizeof(*rc)); 507177633Sdfr mem_free(cl, sizeof (CLIENT)); 508177633Sdfr} 509