clnt_vc.c revision 196503
1177633Sdfr/* $NetBSD: clnt_vc.c,v 1.4 2000/07/14 08:40:42 fvdl Exp $ */ 2177633Sdfr 3177633Sdfr/* 4177633Sdfr * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 5177633Sdfr * unrestricted use provided that this legend is included on all tape 6177633Sdfr * media and as a part of the software program in whole or part. Users 7177633Sdfr * may copy or modify Sun RPC without charge, but are not authorized 8177633Sdfr * to license or distribute it to anyone else except as part of a product or 9177633Sdfr * program developed by the user. 10177633Sdfr * 11177633Sdfr * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12177633Sdfr * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13177633Sdfr * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14177633Sdfr * 15177633Sdfr * Sun RPC is provided with no support and without any obligation on the 16177633Sdfr * part of Sun Microsystems, Inc. to assist in its use, correction, 17177633Sdfr * modification or enhancement. 18177633Sdfr * 19177633Sdfr * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20177633Sdfr * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21177633Sdfr * OR ANY PART THEREOF. 22177633Sdfr * 23177633Sdfr * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24177633Sdfr * or profits or other special, indirect and consequential damages, even if 25177633Sdfr * Sun has been advised of the possibility of such damages. 26177633Sdfr * 27177633Sdfr * Sun Microsystems, Inc. 28177633Sdfr * 2550 Garcia Avenue 29177633Sdfr * Mountain View, California 94043 30177633Sdfr */ 31177633Sdfr 32177633Sdfr#if defined(LIBC_SCCS) && !defined(lint) 33177633Sdfrstatic char *sccsid2 = "@(#)clnt_tcp.c 1.37 87/10/05 Copyr 1984 Sun Micro"; 34177633Sdfrstatic char *sccsid = "@(#)clnt_tcp.c 2.2 88/08/01 4.0 RPCSRC"; 35177633Sdfrstatic char sccsid3[] = "@(#)clnt_vc.c 1.19 89/03/16 Copyr 1988 Sun Micro"; 36177633Sdfr#endif 37177633Sdfr#include <sys/cdefs.h> 38177633Sdfr__FBSDID("$FreeBSD: head/sys/rpc/clnt_vc.c 196503 2009-08-24 10:09:30Z zec $"); 39177633Sdfr 40177633Sdfr/* 41177633Sdfr * clnt_tcp.c, Implements a TCP/IP based, client side RPC. 42177633Sdfr * 43177633Sdfr * Copyright (C) 1984, Sun Microsystems, Inc. 44177633Sdfr * 45177633Sdfr * TCP based RPC supports 'batched calls'. 46177633Sdfr * A sequence of calls may be batched-up in a send buffer. The rpc call 47177633Sdfr * return immediately to the client even though the call was not necessarily 48177633Sdfr * sent. The batching occurs if the results' xdr routine is NULL (0) AND 49177633Sdfr * the rpc timeout value is zero (see clnt.h, rpc). 50177633Sdfr * 51177633Sdfr * Clients should NOT casually batch calls that in fact return results; that is, 52177633Sdfr * the server side should be aware that a call is batched and not produce any 53177633Sdfr * return message. Batched calls that produce many result messages can 54177633Sdfr * deadlock (netlock) the client and the server.... 55177633Sdfr * 56177633Sdfr * Now go hang yourself. 57177633Sdfr */ 58177633Sdfr 59177633Sdfr#include <sys/param.h> 60177633Sdfr#include <sys/systm.h> 61177633Sdfr#include <sys/lock.h> 62177633Sdfr#include <sys/malloc.h> 63177633Sdfr#include <sys/mbuf.h> 64177633Sdfr#include <sys/mutex.h> 65177633Sdfr#include <sys/pcpu.h> 66177633Sdfr#include <sys/proc.h> 67184588Sdfr#include <sys/protosw.h> 68177633Sdfr#include <sys/socket.h> 69177633Sdfr#include <sys/socketvar.h> 70177633Sdfr#include <sys/syslog.h> 71177633Sdfr#include <sys/time.h> 72177633Sdfr#include <sys/uio.h> 73196503Szec 74196503Szec#include <net/vnet.h> 75196503Szec 76184588Sdfr#include <netinet/tcp.h> 77177633Sdfr 78177633Sdfr#include <rpc/rpc.h> 79177685Sdfr#include <rpc/rpc_com.h> 80177633Sdfr 81177633Sdfr#define MCALL_MSG_SIZE 24 82177633Sdfr 83177633Sdfrstruct cmessage { 84177633Sdfr struct cmsghdr cmsg; 85177633Sdfr struct cmsgcred cmcred; 86177633Sdfr}; 87177633Sdfr 88180025Sdfrstatic enum clnt_stat clnt_vc_call(CLIENT *, struct rpc_callextra *, 89184588Sdfr rpcproc_t, struct mbuf *, struct mbuf **, struct timeval); 90177633Sdfrstatic void clnt_vc_geterr(CLIENT *, struct rpc_err *); 91177633Sdfrstatic bool_t clnt_vc_freeres(CLIENT *, xdrproc_t, void *); 92177633Sdfrstatic void clnt_vc_abort(CLIENT *); 93177633Sdfrstatic bool_t clnt_vc_control(CLIENT *, u_int, void *); 94184588Sdfrstatic void clnt_vc_close(CLIENT *); 95177633Sdfrstatic void clnt_vc_destroy(CLIENT *); 96177633Sdfrstatic bool_t time_not_ok(struct timeval *); 97193272Sjhbstatic int clnt_vc_soupcall(struct socket *so, void *arg, int waitflag); 98177633Sdfr 99177633Sdfrstatic struct clnt_ops clnt_vc_ops = { 100177633Sdfr .cl_call = clnt_vc_call, 101177633Sdfr .cl_abort = clnt_vc_abort, 102177633Sdfr .cl_geterr = clnt_vc_geterr, 103177633Sdfr .cl_freeres = clnt_vc_freeres, 104184588Sdfr .cl_close = clnt_vc_close, 105177633Sdfr .cl_destroy = clnt_vc_destroy, 106177633Sdfr .cl_control = clnt_vc_control 107177633Sdfr}; 108177633Sdfr 109177633Sdfr/* 110180025Sdfr * A pending RPC request which awaits a reply. Requests which have 111180025Sdfr * received their reply will have cr_xid set to zero and cr_mrep to 112180025Sdfr * the mbuf chain of the reply. 113177633Sdfr */ 114177633Sdfrstruct ct_request { 115177633Sdfr TAILQ_ENTRY(ct_request) cr_link; 116177633Sdfr uint32_t cr_xid; /* XID of request */ 117177633Sdfr struct mbuf *cr_mrep; /* reply received by upcall */ 118177633Sdfr int cr_error; /* any error from upcall */ 119184588Sdfr char cr_verf[MAX_AUTH_BYTES]; /* reply verf */ 120177633Sdfr}; 121177633Sdfr 122177633SdfrTAILQ_HEAD(ct_request_list, ct_request); 123177633Sdfr 124177633Sdfrstruct ct_data { 125177633Sdfr struct mtx ct_lock; 126180025Sdfr int ct_threads; /* number of threads in clnt_vc_call */ 127184588Sdfr bool_t ct_closing; /* TRUE if we are closing */ 128184588Sdfr bool_t ct_closed; /* TRUE if we are closed */ 129177633Sdfr struct socket *ct_socket; /* connection socket */ 130177633Sdfr bool_t ct_closeit; /* close it on destroy */ 131177633Sdfr struct timeval ct_wait; /* wait interval in milliseconds */ 132177633Sdfr struct sockaddr_storage ct_addr; /* remote addr */ 133177633Sdfr struct rpc_err ct_error; 134177633Sdfr uint32_t ct_xid; 135177633Sdfr char ct_mcallc[MCALL_MSG_SIZE]; /* marshalled callmsg */ 136177633Sdfr size_t ct_mpos; /* pos after marshal */ 137177633Sdfr const char *ct_waitchan; 138177633Sdfr int ct_waitflag; 139177633Sdfr struct mbuf *ct_record; /* current reply record */ 140177633Sdfr size_t ct_record_resid; /* how much left of reply to read */ 141177633Sdfr bool_t ct_record_eor; /* true if reading last fragment */ 142177633Sdfr struct ct_request_list ct_pending; 143193437Srmacklem int ct_upcallrefs; /* Ref cnt of upcalls in prog. */ 144177633Sdfr}; 145177633Sdfr 146193437Srmacklemstatic void clnt_vc_upcallsdone(struct ct_data *); 147193437Srmacklem 148177633Sdfrstatic const char clnt_vc_errstr[] = "%s : %s"; 149177633Sdfrstatic const char clnt_vc_str[] = "clnt_vc_create"; 150177633Sdfrstatic const char clnt_read_vc_str[] = "read_vc"; 151177633Sdfrstatic const char __no_mem_str[] = "out of memory"; 152177633Sdfr 153177633Sdfr/* 154177633Sdfr * Create a client handle for a connection. 155177633Sdfr * Default options are set, which the user can change using clnt_control()'s. 156177633Sdfr * The rpc/vc package does buffering similar to stdio, so the client 157177633Sdfr * must pick send and receive buffer sizes, 0 => use the default. 158177633Sdfr * NB: fd is copied into a private area. 159177633Sdfr * NB: The rpch->cl_auth is set null authentication. Caller may wish to 160177633Sdfr * set this something more useful. 161177633Sdfr * 162177633Sdfr * fd should be an open socket 163177633Sdfr */ 164177633SdfrCLIENT * 165177633Sdfrclnt_vc_create( 166177633Sdfr struct socket *so, /* open file descriptor */ 167177633Sdfr struct sockaddr *raddr, /* servers address */ 168177633Sdfr const rpcprog_t prog, /* program number */ 169177633Sdfr const rpcvers_t vers, /* version number */ 170177633Sdfr size_t sendsz, /* buffer recv size */ 171177633Sdfr size_t recvsz) /* buffer send size */ 172177633Sdfr{ 173177633Sdfr CLIENT *cl; /* client handle */ 174177633Sdfr struct ct_data *ct = NULL; /* client handle */ 175177633Sdfr struct timeval now; 176177633Sdfr struct rpc_msg call_msg; 177177633Sdfr static uint32_t disrupt; 178177633Sdfr struct __rpc_sockinfo si; 179177633Sdfr XDR xdrs; 180184588Sdfr int error, interrupted, one = 1; 181184588Sdfr struct sockopt sopt; 182177633Sdfr 183177633Sdfr if (disrupt == 0) 184177633Sdfr disrupt = (uint32_t)(long)raddr; 185177633Sdfr 186177633Sdfr cl = (CLIENT *)mem_alloc(sizeof (*cl)); 187177633Sdfr ct = (struct ct_data *)mem_alloc(sizeof (*ct)); 188177633Sdfr 189177633Sdfr mtx_init(&ct->ct_lock, "ct->ct_lock", NULL, MTX_DEF); 190180025Sdfr ct->ct_threads = 0; 191180025Sdfr ct->ct_closing = FALSE; 192184588Sdfr ct->ct_closed = FALSE; 193193437Srmacklem ct->ct_upcallrefs = 0; 194177633Sdfr 195177633Sdfr if ((so->so_state & (SS_ISCONNECTED|SS_ISCONFIRMING)) == 0) { 196177633Sdfr error = soconnect(so, raddr, curthread); 197180025Sdfr SOCK_LOCK(so); 198180025Sdfr interrupted = 0; 199180025Sdfr while ((so->so_state & SS_ISCONNECTING) 200180025Sdfr && so->so_error == 0) { 201180025Sdfr error = msleep(&so->so_timeo, SOCK_MTX(so), 202195703Skib PSOCK | PCATCH | PBDRY, "connec", 0); 203180025Sdfr if (error) { 204180025Sdfr if (error == EINTR || error == ERESTART) 205180025Sdfr interrupted = 1; 206180025Sdfr break; 207180025Sdfr } 208180025Sdfr } 209180025Sdfr if (error == 0) { 210180025Sdfr error = so->so_error; 211180025Sdfr so->so_error = 0; 212180025Sdfr } 213180025Sdfr SOCK_UNLOCK(so); 214177633Sdfr if (error) { 215180025Sdfr if (!interrupted) 216180025Sdfr so->so_state &= ~SS_ISCONNECTING; 217177633Sdfr rpc_createerr.cf_stat = RPC_SYSTEMERROR; 218177633Sdfr rpc_createerr.cf_error.re_errno = error; 219177633Sdfr goto err; 220177633Sdfr } 221177633Sdfr } 222177633Sdfr 223196503Szec CURVNET_SET(so->so_vnet); 224196503Szec if (!__rpc_socket2sockinfo(so, &si)) { 225196503Szec CURVNET_RESTORE(); 226177633Sdfr goto err; 227196503Szec } 228177633Sdfr 229184588Sdfr if (so->so_proto->pr_flags & PR_CONNREQUIRED) { 230184588Sdfr bzero(&sopt, sizeof(sopt)); 231184588Sdfr sopt.sopt_dir = SOPT_SET; 232184588Sdfr sopt.sopt_level = SOL_SOCKET; 233184588Sdfr sopt.sopt_name = SO_KEEPALIVE; 234184588Sdfr sopt.sopt_val = &one; 235184588Sdfr sopt.sopt_valsize = sizeof(one); 236184588Sdfr sosetopt(so, &sopt); 237184588Sdfr } 238184588Sdfr 239184588Sdfr if (so->so_proto->pr_protocol == IPPROTO_TCP) { 240184588Sdfr bzero(&sopt, sizeof(sopt)); 241184588Sdfr sopt.sopt_dir = SOPT_SET; 242184588Sdfr sopt.sopt_level = IPPROTO_TCP; 243184588Sdfr sopt.sopt_name = TCP_NODELAY; 244184588Sdfr sopt.sopt_val = &one; 245184588Sdfr sopt.sopt_valsize = sizeof(one); 246184588Sdfr sosetopt(so, &sopt); 247184588Sdfr } 248196503Szec CURVNET_RESTORE(); 249184588Sdfr 250177633Sdfr ct->ct_closeit = FALSE; 251177633Sdfr 252177633Sdfr /* 253177633Sdfr * Set up private data struct 254177633Sdfr */ 255177633Sdfr ct->ct_socket = so; 256177633Sdfr ct->ct_wait.tv_sec = -1; 257177633Sdfr ct->ct_wait.tv_usec = -1; 258177633Sdfr memcpy(&ct->ct_addr, raddr, raddr->sa_len); 259177633Sdfr 260177633Sdfr /* 261177633Sdfr * Initialize call message 262177633Sdfr */ 263177633Sdfr getmicrotime(&now); 264177633Sdfr ct->ct_xid = ((uint32_t)++disrupt) ^ __RPC_GETXID(&now); 265177633Sdfr call_msg.rm_xid = ct->ct_xid; 266177633Sdfr call_msg.rm_direction = CALL; 267177633Sdfr call_msg.rm_call.cb_rpcvers = RPC_MSG_VERSION; 268177633Sdfr call_msg.rm_call.cb_prog = (uint32_t)prog; 269177633Sdfr call_msg.rm_call.cb_vers = (uint32_t)vers; 270177633Sdfr 271177633Sdfr /* 272177633Sdfr * pre-serialize the static part of the call msg and stash it away 273177633Sdfr */ 274177633Sdfr xdrmem_create(&xdrs, ct->ct_mcallc, MCALL_MSG_SIZE, 275177633Sdfr XDR_ENCODE); 276177633Sdfr if (! xdr_callhdr(&xdrs, &call_msg)) { 277177633Sdfr if (ct->ct_closeit) { 278177633Sdfr soclose(ct->ct_socket); 279177633Sdfr } 280177633Sdfr goto err; 281177633Sdfr } 282177633Sdfr ct->ct_mpos = XDR_GETPOS(&xdrs); 283177633Sdfr XDR_DESTROY(&xdrs); 284177633Sdfr ct->ct_waitchan = "rpcrecv"; 285177633Sdfr ct->ct_waitflag = 0; 286177633Sdfr 287177633Sdfr /* 288177633Sdfr * Create a client handle which uses xdrrec for serialization 289177633Sdfr * and authnone for authentication. 290177633Sdfr */ 291180025Sdfr cl->cl_refs = 1; 292177633Sdfr cl->cl_ops = &clnt_vc_ops; 293177633Sdfr cl->cl_private = ct; 294177633Sdfr cl->cl_auth = authnone_create(); 295177633Sdfr sendsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)sendsz); 296177633Sdfr recvsz = __rpc_get_t_size(si.si_af, si.si_proto, (int)recvsz); 297184588Sdfr soreserve(ct->ct_socket, sendsz, recvsz); 298177633Sdfr 299177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 300193272Sjhb soupcall_set(ct->ct_socket, SO_RCV, clnt_vc_soupcall, ct); 301177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 302177633Sdfr 303177633Sdfr ct->ct_record = NULL; 304177633Sdfr ct->ct_record_resid = 0; 305177633Sdfr TAILQ_INIT(&ct->ct_pending); 306177633Sdfr return (cl); 307177633Sdfr 308177633Sdfrerr: 309177633Sdfr if (cl) { 310177633Sdfr if (ct) { 311184877Sdfr mtx_destroy(&ct->ct_lock); 312177633Sdfr mem_free(ct, sizeof (struct ct_data)); 313177633Sdfr } 314177633Sdfr if (cl) 315177633Sdfr mem_free(cl, sizeof (CLIENT)); 316177633Sdfr } 317177633Sdfr return ((CLIENT *)NULL); 318177633Sdfr} 319177633Sdfr 320177633Sdfrstatic enum clnt_stat 321177633Sdfrclnt_vc_call( 322184588Sdfr CLIENT *cl, /* client handle */ 323184588Sdfr struct rpc_callextra *ext, /* call metadata */ 324184588Sdfr rpcproc_t proc, /* procedure number */ 325184588Sdfr struct mbuf *args, /* pointer to args */ 326184588Sdfr struct mbuf **resultsp, /* pointer to results */ 327184588Sdfr struct timeval utimeout) 328177633Sdfr{ 329177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 330180025Sdfr AUTH *auth; 331184588Sdfr struct rpc_err *errp; 332184588Sdfr enum clnt_stat stat; 333177633Sdfr XDR xdrs; 334177633Sdfr struct rpc_msg reply_msg; 335177633Sdfr bool_t ok; 336177633Sdfr int nrefreshes = 2; /* number of times to refresh cred */ 337177633Sdfr struct timeval timeout; 338177633Sdfr uint32_t xid; 339184588Sdfr struct mbuf *mreq = NULL, *results; 340180025Sdfr struct ct_request *cr; 341177633Sdfr int error; 342177633Sdfr 343180025Sdfr cr = malloc(sizeof(struct ct_request), M_RPC, M_WAITOK); 344180025Sdfr 345177633Sdfr mtx_lock(&ct->ct_lock); 346177633Sdfr 347184588Sdfr if (ct->ct_closing || ct->ct_closed) { 348180025Sdfr mtx_unlock(&ct->ct_lock); 349180025Sdfr free(cr, M_RPC); 350180025Sdfr return (RPC_CANTSEND); 351180025Sdfr } 352180025Sdfr ct->ct_threads++; 353177633Sdfr 354184588Sdfr if (ext) { 355180025Sdfr auth = ext->rc_auth; 356184588Sdfr errp = &ext->rc_err; 357184588Sdfr } else { 358180025Sdfr auth = cl->cl_auth; 359184588Sdfr errp = &ct->ct_error; 360184588Sdfr } 361180025Sdfr 362180025Sdfr cr->cr_mrep = NULL; 363180025Sdfr cr->cr_error = 0; 364180025Sdfr 365177633Sdfr if (ct->ct_wait.tv_usec == -1) { 366177633Sdfr timeout = utimeout; /* use supplied timeout */ 367177633Sdfr } else { 368177633Sdfr timeout = ct->ct_wait; /* use default timeout */ 369177633Sdfr } 370177633Sdfr 371177633Sdfrcall_again: 372177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 373177633Sdfr 374177633Sdfr ct->ct_xid++; 375177633Sdfr xid = ct->ct_xid; 376177633Sdfr 377177633Sdfr mtx_unlock(&ct->ct_lock); 378177633Sdfr 379177633Sdfr /* 380177633Sdfr * Leave space to pre-pend the record mark. 381177633Sdfr */ 382177633Sdfr MGETHDR(mreq, M_WAIT, MT_DATA); 383177633Sdfr mreq->m_data += sizeof(uint32_t); 384184588Sdfr KASSERT(ct->ct_mpos + sizeof(uint32_t) <= MHLEN, 385184588Sdfr ("RPC header too big")); 386184588Sdfr bcopy(ct->ct_mcallc, mreq->m_data, ct->ct_mpos); 387184588Sdfr mreq->m_len = ct->ct_mpos; 388177633Sdfr 389177633Sdfr /* 390177633Sdfr * The XID is the first thing in the request. 391177633Sdfr */ 392177633Sdfr *mtod(mreq, uint32_t *) = htonl(xid); 393177633Sdfr 394177633Sdfr xdrmbuf_create(&xdrs, mreq, XDR_ENCODE); 395177633Sdfr 396184588Sdfr errp->re_status = stat = RPC_SUCCESS; 397177633Sdfr 398177633Sdfr if ((! XDR_PUTINT32(&xdrs, &proc)) || 399184588Sdfr (! AUTH_MARSHALL(auth, xid, &xdrs, 400184588Sdfr m_copym(args, 0, M_COPYALL, M_WAITOK)))) { 401184588Sdfr errp->re_status = stat = RPC_CANTENCODEARGS; 402180025Sdfr mtx_lock(&ct->ct_lock); 403180025Sdfr goto out; 404177633Sdfr } 405184588Sdfr mreq->m_pkthdr.len = m_length(mreq, NULL); 406177633Sdfr 407177633Sdfr /* 408177633Sdfr * Prepend a record marker containing the packet length. 409177633Sdfr */ 410177633Sdfr M_PREPEND(mreq, sizeof(uint32_t), M_WAIT); 411177633Sdfr *mtod(mreq, uint32_t *) = 412177633Sdfr htonl(0x80000000 | (mreq->m_pkthdr.len - sizeof(uint32_t))); 413177633Sdfr 414180025Sdfr cr->cr_xid = xid; 415177633Sdfr mtx_lock(&ct->ct_lock); 416180025Sdfr TAILQ_INSERT_TAIL(&ct->ct_pending, cr, cr_link); 417177633Sdfr mtx_unlock(&ct->ct_lock); 418177633Sdfr 419177633Sdfr /* 420177633Sdfr * sosend consumes mreq. 421177633Sdfr */ 422177633Sdfr error = sosend(ct->ct_socket, NULL, NULL, mreq, NULL, 0, curthread); 423177633Sdfr mreq = NULL; 424184588Sdfr if (error == EMSGSIZE) { 425184588Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_snd); 426184588Sdfr sbwait(&ct->ct_socket->so_snd); 427184588Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_snd); 428184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 429184588Sdfr mtx_lock(&ct->ct_lock); 430184588Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 431184588Sdfr goto call_again; 432184588Sdfr } 433177633Sdfr 434184588Sdfr reply_msg.acpted_rply.ar_verf.oa_flavor = AUTH_NULL; 435184588Sdfr reply_msg.acpted_rply.ar_verf.oa_base = cr->cr_verf; 436184588Sdfr reply_msg.acpted_rply.ar_verf.oa_length = 0; 437184588Sdfr reply_msg.acpted_rply.ar_results.where = NULL; 438184588Sdfr reply_msg.acpted_rply.ar_results.proc = (xdrproc_t)xdr_void; 439177633Sdfr 440177633Sdfr mtx_lock(&ct->ct_lock); 441177633Sdfr if (error) { 442180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 443184588Sdfr errp->re_errno = error; 444184588Sdfr errp->re_status = stat = RPC_CANTSEND; 445177633Sdfr goto out; 446177633Sdfr } 447177633Sdfr 448177633Sdfr /* 449177633Sdfr * Check to see if we got an upcall while waiting for the 450177633Sdfr * lock. In both these cases, the request has been removed 451177633Sdfr * from ct->ct_pending. 452177633Sdfr */ 453180025Sdfr if (cr->cr_error) { 454180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 455184588Sdfr errp->re_errno = cr->cr_error; 456184588Sdfr errp->re_status = stat = RPC_CANTRECV; 457177633Sdfr goto out; 458177633Sdfr } 459180025Sdfr if (cr->cr_mrep) { 460180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 461177633Sdfr goto got_reply; 462177633Sdfr } 463177633Sdfr 464177633Sdfr /* 465177633Sdfr * Hack to provide rpc-based message passing 466177633Sdfr */ 467177633Sdfr if (timeout.tv_sec == 0 && timeout.tv_usec == 0) { 468180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 469184588Sdfr errp->re_status = stat = RPC_TIMEDOUT; 470177633Sdfr goto out; 471177633Sdfr } 472177633Sdfr 473180025Sdfr error = msleep(cr, &ct->ct_lock, ct->ct_waitflag, ct->ct_waitchan, 474177633Sdfr tvtohz(&timeout)); 475177633Sdfr 476180025Sdfr TAILQ_REMOVE(&ct->ct_pending, cr, cr_link); 477180025Sdfr 478177633Sdfr if (error) { 479177633Sdfr /* 480177633Sdfr * The sleep returned an error so our request is still 481177633Sdfr * on the list. Turn the error code into an 482177633Sdfr * appropriate client status. 483177633Sdfr */ 484184588Sdfr errp->re_errno = error; 485177633Sdfr switch (error) { 486177633Sdfr case EINTR: 487195703Skib case ERESTART: 488184588Sdfr stat = RPC_INTR; 489177633Sdfr break; 490177633Sdfr case EWOULDBLOCK: 491184588Sdfr stat = RPC_TIMEDOUT; 492177633Sdfr break; 493177633Sdfr default: 494184588Sdfr stat = RPC_CANTRECV; 495177633Sdfr } 496184588Sdfr errp->re_status = stat; 497177633Sdfr goto out; 498177633Sdfr } else { 499177633Sdfr /* 500177633Sdfr * We were woken up by the upcall. If the 501177633Sdfr * upcall had a receive error, report that, 502177633Sdfr * otherwise we have a reply. 503177633Sdfr */ 504180025Sdfr if (cr->cr_error) { 505184588Sdfr errp->re_errno = cr->cr_error; 506184588Sdfr errp->re_status = stat = RPC_CANTRECV; 507177633Sdfr goto out; 508177633Sdfr } 509177633Sdfr } 510177633Sdfr 511177633Sdfrgot_reply: 512177633Sdfr /* 513177633Sdfr * Now decode and validate the response. We need to drop the 514177633Sdfr * lock since xdr_replymsg may end up sleeping in malloc. 515177633Sdfr */ 516177633Sdfr mtx_unlock(&ct->ct_lock); 517177633Sdfr 518184588Sdfr if (ext && ext->rc_feedback) 519184588Sdfr ext->rc_feedback(FEEDBACK_OK, proc, ext->rc_feedback_arg); 520184588Sdfr 521180025Sdfr xdrmbuf_create(&xdrs, cr->cr_mrep, XDR_DECODE); 522177633Sdfr ok = xdr_replymsg(&xdrs, &reply_msg); 523180025Sdfr cr->cr_mrep = NULL; 524177633Sdfr 525177633Sdfr if (ok) { 526177633Sdfr if ((reply_msg.rm_reply.rp_stat == MSG_ACCEPTED) && 527184588Sdfr (reply_msg.acpted_rply.ar_stat == SUCCESS)) 528184588Sdfr errp->re_status = stat = RPC_SUCCESS; 529177633Sdfr else 530184588Sdfr stat = _seterr_reply(&reply_msg, errp); 531177633Sdfr 532184588Sdfr if (stat == RPC_SUCCESS) { 533184588Sdfr results = xdrmbuf_getall(&xdrs); 534184588Sdfr if (!AUTH_VALIDATE(auth, xid, 535184588Sdfr &reply_msg.acpted_rply.ar_verf, 536184588Sdfr &results)) { 537184588Sdfr errp->re_status = stat = RPC_AUTHERROR; 538184588Sdfr errp->re_why = AUTH_INVALIDRESP; 539184588Sdfr } else { 540184588Sdfr KASSERT(results, 541184588Sdfr ("auth validated but no result")); 542184588Sdfr *resultsp = results; 543177633Sdfr } 544177633Sdfr } /* end successful completion */ 545177633Sdfr /* 546177633Sdfr * If unsuccesful AND error is an authentication error 547177633Sdfr * then refresh credentials and try again, else break 548177633Sdfr */ 549184588Sdfr else if (stat == RPC_AUTHERROR) 550177633Sdfr /* maybe our credentials need to be refreshed ... */ 551177633Sdfr if (nrefreshes > 0 && 552184588Sdfr AUTH_REFRESH(auth, &reply_msg)) { 553177633Sdfr nrefreshes--; 554184588Sdfr XDR_DESTROY(&xdrs); 555184588Sdfr mtx_lock(&ct->ct_lock); 556177633Sdfr goto call_again; 557177633Sdfr } 558177633Sdfr /* end of unsuccessful completion */ 559177633Sdfr } /* end of valid reply message */ 560177633Sdfr else { 561184588Sdfr errp->re_status = stat = RPC_CANTDECODERES; 562177633Sdfr } 563184588Sdfr XDR_DESTROY(&xdrs); 564184588Sdfr mtx_lock(&ct->ct_lock); 565177633Sdfrout: 566177633Sdfr mtx_assert(&ct->ct_lock, MA_OWNED); 567177633Sdfr 568184588Sdfr KASSERT(stat != RPC_SUCCESS || *resultsp, 569184588Sdfr ("RPC_SUCCESS without reply")); 570184588Sdfr 571177633Sdfr if (mreq) 572177633Sdfr m_freem(mreq); 573180025Sdfr if (cr->cr_mrep) 574180025Sdfr m_freem(cr->cr_mrep); 575177633Sdfr 576180025Sdfr ct->ct_threads--; 577180025Sdfr if (ct->ct_closing) 578180025Sdfr wakeup(ct); 579180025Sdfr 580177633Sdfr mtx_unlock(&ct->ct_lock); 581180025Sdfr 582184588Sdfr if (auth && stat != RPC_SUCCESS) 583184588Sdfr AUTH_VALIDATE(auth, xid, NULL, NULL); 584184588Sdfr 585180025Sdfr free(cr, M_RPC); 586180025Sdfr 587184588Sdfr return (stat); 588177633Sdfr} 589177633Sdfr 590177633Sdfrstatic void 591177633Sdfrclnt_vc_geterr(CLIENT *cl, struct rpc_err *errp) 592177633Sdfr{ 593177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 594177633Sdfr 595177633Sdfr *errp = ct->ct_error; 596177633Sdfr} 597177633Sdfr 598177633Sdfrstatic bool_t 599177633Sdfrclnt_vc_freeres(CLIENT *cl, xdrproc_t xdr_res, void *res_ptr) 600177633Sdfr{ 601177633Sdfr XDR xdrs; 602177633Sdfr bool_t dummy; 603177633Sdfr 604177633Sdfr xdrs.x_op = XDR_FREE; 605177633Sdfr dummy = (*xdr_res)(&xdrs, res_ptr); 606177633Sdfr 607177633Sdfr return (dummy); 608177633Sdfr} 609177633Sdfr 610177633Sdfr/*ARGSUSED*/ 611177633Sdfrstatic void 612177633Sdfrclnt_vc_abort(CLIENT *cl) 613177633Sdfr{ 614177633Sdfr} 615177633Sdfr 616177633Sdfrstatic bool_t 617177633Sdfrclnt_vc_control(CLIENT *cl, u_int request, void *info) 618177633Sdfr{ 619177633Sdfr struct ct_data *ct = (struct ct_data *)cl->cl_private; 620177633Sdfr void *infop = info; 621177633Sdfr 622177633Sdfr mtx_lock(&ct->ct_lock); 623177633Sdfr 624177633Sdfr switch (request) { 625177633Sdfr case CLSET_FD_CLOSE: 626177633Sdfr ct->ct_closeit = TRUE; 627177633Sdfr mtx_unlock(&ct->ct_lock); 628177633Sdfr return (TRUE); 629177633Sdfr case CLSET_FD_NCLOSE: 630177633Sdfr ct->ct_closeit = FALSE; 631177633Sdfr mtx_unlock(&ct->ct_lock); 632177633Sdfr return (TRUE); 633177633Sdfr default: 634177633Sdfr break; 635177633Sdfr } 636177633Sdfr 637177633Sdfr /* for other requests which use info */ 638177633Sdfr if (info == NULL) { 639177633Sdfr mtx_unlock(&ct->ct_lock); 640177633Sdfr return (FALSE); 641177633Sdfr } 642177633Sdfr switch (request) { 643177633Sdfr case CLSET_TIMEOUT: 644177633Sdfr if (time_not_ok((struct timeval *)info)) { 645177633Sdfr mtx_unlock(&ct->ct_lock); 646177633Sdfr return (FALSE); 647177633Sdfr } 648177633Sdfr ct->ct_wait = *(struct timeval *)infop; 649177633Sdfr break; 650177633Sdfr case CLGET_TIMEOUT: 651177633Sdfr *(struct timeval *)infop = ct->ct_wait; 652177633Sdfr break; 653177633Sdfr case CLGET_SERVER_ADDR: 654177633Sdfr (void) memcpy(info, &ct->ct_addr, (size_t)ct->ct_addr.ss_len); 655177633Sdfr break; 656177633Sdfr case CLGET_SVC_ADDR: 657177633Sdfr /* 658177633Sdfr * Slightly different semantics to userland - we use 659177633Sdfr * sockaddr instead of netbuf. 660177633Sdfr */ 661177633Sdfr memcpy(info, &ct->ct_addr, ct->ct_addr.ss_len); 662177633Sdfr break; 663177633Sdfr case CLSET_SVC_ADDR: /* set to new address */ 664177633Sdfr mtx_unlock(&ct->ct_lock); 665177633Sdfr return (FALSE); 666177633Sdfr case CLGET_XID: 667177633Sdfr *(uint32_t *)info = ct->ct_xid; 668177633Sdfr break; 669177633Sdfr case CLSET_XID: 670177633Sdfr /* This will set the xid of the NEXT call */ 671177633Sdfr /* decrement by 1 as clnt_vc_call() increments once */ 672177633Sdfr ct->ct_xid = *(uint32_t *)info - 1; 673177633Sdfr break; 674177633Sdfr case CLGET_VERS: 675177633Sdfr /* 676177633Sdfr * This RELIES on the information that, in the call body, 677177633Sdfr * the version number field is the fifth field from the 678177633Sdfr * begining of the RPC header. MUST be changed if the 679177633Sdfr * call_struct is changed 680177633Sdfr */ 681177633Sdfr *(uint32_t *)info = 682177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 683177633Sdfr 4 * BYTES_PER_XDR_UNIT)); 684177633Sdfr break; 685177633Sdfr 686177633Sdfr case CLSET_VERS: 687177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 688177633Sdfr 4 * BYTES_PER_XDR_UNIT) = 689177633Sdfr htonl(*(uint32_t *)info); 690177633Sdfr break; 691177633Sdfr 692177633Sdfr case CLGET_PROG: 693177633Sdfr /* 694177633Sdfr * This RELIES on the information that, in the call body, 695177633Sdfr * the program number field is the fourth field from the 696177633Sdfr * begining of the RPC header. MUST be changed if the 697177633Sdfr * call_struct is changed 698177633Sdfr */ 699177633Sdfr *(uint32_t *)info = 700177633Sdfr ntohl(*(uint32_t *)(void *)(ct->ct_mcallc + 701177633Sdfr 3 * BYTES_PER_XDR_UNIT)); 702177633Sdfr break; 703177633Sdfr 704177633Sdfr case CLSET_PROG: 705177633Sdfr *(uint32_t *)(void *)(ct->ct_mcallc + 706177633Sdfr 3 * BYTES_PER_XDR_UNIT) = 707177633Sdfr htonl(*(uint32_t *)info); 708177633Sdfr break; 709177633Sdfr 710177633Sdfr case CLSET_WAITCHAN: 711184588Sdfr ct->ct_waitchan = (const char *)info; 712177633Sdfr break; 713177633Sdfr 714177633Sdfr case CLGET_WAITCHAN: 715177633Sdfr *(const char **) info = ct->ct_waitchan; 716177633Sdfr break; 717177633Sdfr 718177633Sdfr case CLSET_INTERRUPTIBLE: 719177633Sdfr if (*(int *) info) 720195703Skib ct->ct_waitflag = PCATCH | PBDRY; 721177633Sdfr else 722177633Sdfr ct->ct_waitflag = 0; 723177633Sdfr break; 724177633Sdfr 725177633Sdfr case CLGET_INTERRUPTIBLE: 726177633Sdfr if (ct->ct_waitflag) 727177633Sdfr *(int *) info = TRUE; 728177633Sdfr else 729177633Sdfr *(int *) info = FALSE; 730177633Sdfr break; 731177633Sdfr 732177633Sdfr default: 733177633Sdfr mtx_unlock(&ct->ct_lock); 734177633Sdfr return (FALSE); 735177633Sdfr } 736177633Sdfr 737177633Sdfr mtx_unlock(&ct->ct_lock); 738177633Sdfr return (TRUE); 739177633Sdfr} 740177633Sdfr 741177633Sdfrstatic void 742184588Sdfrclnt_vc_close(CLIENT *cl) 743177633Sdfr{ 744177633Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 745180025Sdfr struct ct_request *cr; 746177633Sdfr 747177633Sdfr mtx_lock(&ct->ct_lock); 748177633Sdfr 749184588Sdfr if (ct->ct_closed) { 750184588Sdfr mtx_unlock(&ct->ct_lock); 751184588Sdfr return; 752184588Sdfr } 753184588Sdfr 754184588Sdfr if (ct->ct_closing) { 755184588Sdfr while (ct->ct_closing) 756184588Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 757184588Sdfr KASSERT(ct->ct_closed, ("client should be closed")); 758184588Sdfr mtx_unlock(&ct->ct_lock); 759184588Sdfr return; 760184588Sdfr } 761184588Sdfr 762177633Sdfr if (ct->ct_socket) { 763193272Sjhb ct->ct_closing = TRUE; 764193272Sjhb mtx_unlock(&ct->ct_lock); 765193272Sjhb 766177633Sdfr SOCKBUF_LOCK(&ct->ct_socket->so_rcv); 767193272Sjhb soupcall_clear(ct->ct_socket, SO_RCV); 768193437Srmacklem clnt_vc_upcallsdone(ct); 769177633Sdfr SOCKBUF_UNLOCK(&ct->ct_socket->so_rcv); 770177633Sdfr 771180025Sdfr /* 772180025Sdfr * Abort any pending requests and wait until everyone 773180025Sdfr * has finished with clnt_vc_call. 774180025Sdfr */ 775193272Sjhb mtx_lock(&ct->ct_lock); 776180025Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 777180025Sdfr cr->cr_xid = 0; 778180025Sdfr cr->cr_error = ESHUTDOWN; 779180025Sdfr wakeup(cr); 780180025Sdfr } 781177633Sdfr 782180025Sdfr while (ct->ct_threads) 783180025Sdfr msleep(ct, &ct->ct_lock, 0, "rpcclose", 0); 784184588Sdfr } 785180025Sdfr 786184588Sdfr ct->ct_closing = FALSE; 787184588Sdfr ct->ct_closed = TRUE; 788184588Sdfr mtx_unlock(&ct->ct_lock); 789184588Sdfr wakeup(ct); 790184588Sdfr} 791184588Sdfr 792184588Sdfrstatic void 793184588Sdfrclnt_vc_destroy(CLIENT *cl) 794184588Sdfr{ 795184588Sdfr struct ct_data *ct = (struct ct_data *) cl->cl_private; 796184588Sdfr struct socket *so = NULL; 797184588Sdfr 798184588Sdfr clnt_vc_close(cl); 799184588Sdfr 800184588Sdfr mtx_lock(&ct->ct_lock); 801184588Sdfr 802184588Sdfr if (ct->ct_socket) { 803177633Sdfr if (ct->ct_closeit) { 804177633Sdfr so = ct->ct_socket; 805177633Sdfr } 806177633Sdfr } 807177633Sdfr 808177633Sdfr mtx_unlock(&ct->ct_lock); 809177633Sdfr 810177633Sdfr mtx_destroy(&ct->ct_lock); 811177633Sdfr if (so) { 812177633Sdfr soshutdown(so, SHUT_WR); 813177633Sdfr soclose(so); 814177633Sdfr } 815177633Sdfr mem_free(ct, sizeof(struct ct_data)); 816177633Sdfr mem_free(cl, sizeof(CLIENT)); 817177633Sdfr} 818177633Sdfr 819177633Sdfr/* 820177633Sdfr * Make sure that the time is not garbage. -1 value is disallowed. 821177633Sdfr * Note this is different from time_not_ok in clnt_dg.c 822177633Sdfr */ 823177633Sdfrstatic bool_t 824177633Sdfrtime_not_ok(struct timeval *t) 825177633Sdfr{ 826177633Sdfr return (t->tv_sec <= -1 || t->tv_sec > 100000000 || 827177633Sdfr t->tv_usec <= -1 || t->tv_usec > 1000000); 828177633Sdfr} 829177633Sdfr 830193272Sjhbint 831177633Sdfrclnt_vc_soupcall(struct socket *so, void *arg, int waitflag) 832177633Sdfr{ 833177633Sdfr struct ct_data *ct = (struct ct_data *) arg; 834177633Sdfr struct uio uio; 835177633Sdfr struct mbuf *m; 836177633Sdfr struct ct_request *cr; 837177633Sdfr int error, rcvflag, foundreq; 838177633Sdfr uint32_t xid, header; 839184588Sdfr bool_t do_read; 840177633Sdfr 841193437Srmacklem ct->ct_upcallrefs++; 842177633Sdfr uio.uio_td = curthread; 843177633Sdfr do { 844177633Sdfr /* 845177633Sdfr * If ct_record_resid is zero, we are waiting for a 846177633Sdfr * record mark. 847177633Sdfr */ 848177633Sdfr if (ct->ct_record_resid == 0) { 849177633Sdfr 850177633Sdfr /* 851177633Sdfr * Make sure there is either a whole record 852177633Sdfr * mark in the buffer or there is some other 853177633Sdfr * error condition 854177633Sdfr */ 855177633Sdfr do_read = FALSE; 856177633Sdfr if (so->so_rcv.sb_cc >= sizeof(uint32_t) 857177633Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 858177633Sdfr || so->so_error) 859177633Sdfr do_read = TRUE; 860177633Sdfr 861177633Sdfr if (!do_read) 862193437Srmacklem break; 863177633Sdfr 864193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 865177633Sdfr uio.uio_resid = sizeof(uint32_t); 866177633Sdfr m = NULL; 867177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 868177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 869193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 870177633Sdfr 871177633Sdfr if (error == EWOULDBLOCK) 872177633Sdfr break; 873177633Sdfr 874177633Sdfr /* 875177633Sdfr * If there was an error, wake up all pending 876177633Sdfr * requests. 877177633Sdfr */ 878177633Sdfr if (error || uio.uio_resid > 0) { 879177633Sdfr wakeup_all: 880177633Sdfr mtx_lock(&ct->ct_lock); 881177633Sdfr if (!error) { 882177633Sdfr /* 883177633Sdfr * We must have got EOF trying 884177633Sdfr * to read from the stream. 885177633Sdfr */ 886177633Sdfr error = ECONNRESET; 887177633Sdfr } 888177633Sdfr ct->ct_error.re_status = RPC_CANTRECV; 889177633Sdfr ct->ct_error.re_errno = error; 890177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 891177633Sdfr cr->cr_error = error; 892177633Sdfr wakeup(cr); 893177633Sdfr } 894177633Sdfr mtx_unlock(&ct->ct_lock); 895177633Sdfr break; 896177633Sdfr } 897184588Sdfr bcopy(mtod(m, uint32_t *), &header, sizeof(uint32_t)); 898177633Sdfr header = ntohl(header); 899177633Sdfr ct->ct_record = NULL; 900177633Sdfr ct->ct_record_resid = header & 0x7fffffff; 901177633Sdfr ct->ct_record_eor = ((header & 0x80000000) != 0); 902177633Sdfr m_freem(m); 903177633Sdfr } else { 904177633Sdfr /* 905184588Sdfr * Wait until the socket has the whole record 906184588Sdfr * buffered. 907184588Sdfr */ 908184588Sdfr do_read = FALSE; 909184588Sdfr if (so->so_rcv.sb_cc >= ct->ct_record_resid 910184588Sdfr || (so->so_rcv.sb_state & SBS_CANTRCVMORE) 911184588Sdfr || so->so_error) 912184588Sdfr do_read = TRUE; 913184588Sdfr 914184588Sdfr if (!do_read) 915193437Srmacklem break; 916184588Sdfr 917184588Sdfr /* 918177633Sdfr * We have the record mark. Read as much as 919177633Sdfr * the socket has buffered up to the end of 920177633Sdfr * this record. 921177633Sdfr */ 922193272Sjhb SOCKBUF_UNLOCK(&so->so_rcv); 923177633Sdfr uio.uio_resid = ct->ct_record_resid; 924177633Sdfr m = NULL; 925177633Sdfr rcvflag = MSG_DONTWAIT | MSG_SOCALLBCK; 926177633Sdfr error = soreceive(so, NULL, &uio, &m, NULL, &rcvflag); 927193272Sjhb SOCKBUF_LOCK(&so->so_rcv); 928177633Sdfr 929177633Sdfr if (error == EWOULDBLOCK) 930177633Sdfr break; 931177633Sdfr 932177633Sdfr if (error || uio.uio_resid == ct->ct_record_resid) 933177633Sdfr goto wakeup_all; 934177633Sdfr 935177633Sdfr /* 936177633Sdfr * If we have part of the record already, 937177633Sdfr * chain this bit onto the end. 938177633Sdfr */ 939177633Sdfr if (ct->ct_record) 940177633Sdfr m_last(ct->ct_record)->m_next = m; 941177633Sdfr else 942177633Sdfr ct->ct_record = m; 943177633Sdfr 944177633Sdfr ct->ct_record_resid = uio.uio_resid; 945177633Sdfr 946177633Sdfr /* 947177633Sdfr * If we have the entire record, see if we can 948177633Sdfr * match it to a request. 949177633Sdfr */ 950177633Sdfr if (ct->ct_record_resid == 0 951177633Sdfr && ct->ct_record_eor) { 952177633Sdfr /* 953177633Sdfr * The XID is in the first uint32_t of 954177633Sdfr * the reply. 955177633Sdfr */ 956184588Sdfr if (ct->ct_record->m_len < sizeof(xid)) 957184588Sdfr ct->ct_record = 958184588Sdfr m_pullup(ct->ct_record, 959184588Sdfr sizeof(xid)); 960177633Sdfr if (!ct->ct_record) 961177633Sdfr break; 962184588Sdfr bcopy(mtod(ct->ct_record, uint32_t *), 963184588Sdfr &xid, sizeof(uint32_t)); 964177633Sdfr xid = ntohl(xid); 965177633Sdfr 966177633Sdfr mtx_lock(&ct->ct_lock); 967177633Sdfr foundreq = 0; 968177633Sdfr TAILQ_FOREACH(cr, &ct->ct_pending, cr_link) { 969177633Sdfr if (cr->cr_xid == xid) { 970177633Sdfr /* 971177633Sdfr * This one 972180025Sdfr * matches. We leave 973180025Sdfr * the reply mbuf in 974177633Sdfr * cr->cr_mrep. Set 975177633Sdfr * the XID to zero so 976180025Sdfr * that we will ignore 977180025Sdfr * any duplicaed 978180025Sdfr * replies. 979177633Sdfr */ 980177633Sdfr cr->cr_xid = 0; 981177633Sdfr cr->cr_mrep = ct->ct_record; 982177633Sdfr cr->cr_error = 0; 983177633Sdfr foundreq = 1; 984177633Sdfr wakeup(cr); 985177633Sdfr break; 986177633Sdfr } 987177633Sdfr } 988177633Sdfr mtx_unlock(&ct->ct_lock); 989177633Sdfr 990177633Sdfr if (!foundreq) 991177633Sdfr m_freem(ct->ct_record); 992177633Sdfr ct->ct_record = NULL; 993177633Sdfr } 994177633Sdfr } 995177633Sdfr } while (m); 996193437Srmacklem ct->ct_upcallrefs--; 997193437Srmacklem if (ct->ct_upcallrefs < 0) 998193437Srmacklem panic("rpcvc upcall refcnt"); 999193437Srmacklem if (ct->ct_upcallrefs == 0) 1000193437Srmacklem wakeup(&ct->ct_upcallrefs); 1001193272Sjhb return (SU_OK); 1002177633Sdfr} 1003193437Srmacklem 1004193437Srmacklem/* 1005193437Srmacklem * Wait for all upcalls in progress to complete. 1006193437Srmacklem */ 1007193437Srmacklemstatic void 1008193437Srmacklemclnt_vc_upcallsdone(struct ct_data *ct) 1009193437Srmacklem{ 1010193437Srmacklem 1011193437Srmacklem SOCKBUF_LOCK_ASSERT(&ct->ct_socket->so_rcv); 1012193437Srmacklem 1013193437Srmacklem while (ct->ct_upcallrefs > 0) 1014193437Srmacklem (void) msleep(&ct->ct_upcallrefs, 1015193437Srmacklem SOCKBUF_MTX(&ct->ct_socket->so_rcv), 0, "rpcvcup", 0); 1016193437Srmacklem} 1017