2 * Copyright (c) 1989, 1991, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 * Socket operations for use by nfs
42 #include "opt_inet6.h"
43 #include "opt_kdtrace.h"
44 #include "opt_kgssapi.h"
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/limits.h>
51 #include <sys/malloc.h>
53 #include <sys/mount.h>
54 #include <sys/mutex.h>
56 #include <sys/signalvar.h>
57 #include <sys/syscallsubr.h>
58 #include <sys/sysctl.h>
59 #include <sys/syslog.h>
60 #include <sys/vnode.h>
64 #include <nfs/nfsproto.h>
65 #include <nfsclient/nfs.h>
66 #include <nfs/xdr_subs.h>
67 #include <nfsclient/nfsm_subs.h>
68 #include <nfsclient/nfsmount.h>
69 #include <nfsclient/nfsnode.h>
72 #include <sys/dtrace_bsd.h>
74 dtrace_nfsclient_nfs23_start_probe_func_t
75 dtrace_nfsclient_nfs23_start_probe;
77 dtrace_nfsclient_nfs23_done_probe_func_t
78 dtrace_nfsclient_nfs23_done_probe;
81 * Registered probes by RPC type.
83 uint32_t nfsclient_nfs2_start_probes[NFS_NPROCS];
84 uint32_t nfsclient_nfs2_done_probes[NFS_NPROCS];
86 uint32_t nfsclient_nfs3_start_probes[NFS_NPROCS];
87 uint32_t nfsclient_nfs3_done_probes[NFS_NPROCS];
90 static int nfs_bufpackets = 4;
91 static int nfs_reconnects;
92 static int nfs3_jukebox_delay = 10;
93 static int nfs_skip_wcc_data_onerr = 1;
94 static int fake_wchan;
96 SYSCTL_DECL(_vfs_nfs);
98 SYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0,
99 "Buffer reservation size 2 < x < 64");
100 SYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0,
101 "Number of times the nfs client has had to reconnect");
102 SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0,
103 "Number of seconds to delay a retry after receiving EJUKEBOX");
104 SYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0,
105 "Disable weak cache consistency checking when server returns an error");
107 static void nfs_down(struct nfsmount *, struct thread *, const char *,
109 static void nfs_up(struct nfsmount *, struct thread *, const char *,
111 static int nfs_msg(struct thread *, const char *, const char *, int);
113 extern int nfsv2_procid[];
115 struct nfs_cached_auth {
116 int ca_refs; /* refcount, including 1 from the cache */
117 uid_t ca_uid; /* uid that corresponds to this auth */
118 AUTH *ca_auth; /* RPC auth handle */
125 static enum nfs_rto_timer_t nfs_proct[NFS_NPROCS] = {
126 NFS_DEFAULT_TIMER, /* NULL */
127 NFS_GETATTR_TIMER, /* GETATTR */
128 NFS_DEFAULT_TIMER, /* SETATTR */
129 NFS_LOOKUP_TIMER, /* LOOKUP */
130 NFS_GETATTR_TIMER, /* ACCESS */
131 NFS_READ_TIMER, /* READLINK */
132 NFS_READ_TIMER, /* READ */
133 NFS_WRITE_TIMER, /* WRITE */
134 NFS_DEFAULT_TIMER, /* CREATE */
135 NFS_DEFAULT_TIMER, /* MKDIR */
136 NFS_DEFAULT_TIMER, /* SYMLINK */
137 NFS_DEFAULT_TIMER, /* MKNOD */
138 NFS_DEFAULT_TIMER, /* REMOVE */
139 NFS_DEFAULT_TIMER, /* RMDIR */
140 NFS_DEFAULT_TIMER, /* RENAME */
141 NFS_DEFAULT_TIMER, /* LINK */
142 NFS_READ_TIMER, /* READDIR */
143 NFS_READ_TIMER, /* READDIRPLUS */
144 NFS_DEFAULT_TIMER, /* FSSTAT */
145 NFS_DEFAULT_TIMER, /* FSINFO */
146 NFS_DEFAULT_TIMER, /* PATHCONF */
147 NFS_DEFAULT_TIMER, /* COMMIT */
148 NFS_DEFAULT_TIMER, /* NOOP */
152 * Choose the correct RTT timer for this NFS procedure.
154 static inline enum nfs_rto_timer_t
155 nfs_rto_timer(u_int32_t procnum)
157 return nfs_proct[procnum];
161 * Initialize the RTT estimator state for a new mount point.
164 nfs_init_rtt(struct nfsmount *nmp)
168 for (i = 0; i < NFS_MAX_TIMER; i++) {
169 nmp->nm_timers[i].rt_srtt = hz;
170 nmp->nm_timers[i].rt_deviate = 0;
171 nmp->nm_timers[i].rt_rtxcur = hz;
176 * Initialize sockets and congestion for a new NFS connection.
177 * We do not free the sockaddr if error.
180 nfs_connect(struct nfsmount *nmp)
182 int rcvreserve, sndreserve;
184 struct sockaddr *saddr;
185 struct ucred *origcred;
186 struct thread *td = curthread;
188 struct netconfig *nconf;
190 int one = 1, retries;
193 * We need to establish the socket using the credentials of
194 * the mountpoint. Some parts of this process (such as
195 * sobind() and soconnect()) will use the curent thread's
196 * credential instead of the socket credential. To work
197 * around this, temporarily change the current thread's
198 * credential to that of the mountpoint.
200 * XXX: It would be better to explicitly pass the correct
201 * credential to sobind() and soconnect().
203 origcred = td->td_ucred;
204 td->td_ucred = nmp->nm_mountp->mnt_cred;
208 if (nmp->nm_flag & NFSMNT_NFSV3)
210 else if (nmp->nm_flag & NFSMNT_NFSV4)
212 if (saddr->sa_family == AF_INET)
213 if (nmp->nm_sotype == SOCK_DGRAM)
214 nconf = getnetconfigent("udp");
216 nconf = getnetconfigent("tcp");
218 if (nmp->nm_sotype == SOCK_DGRAM)
219 nconf = getnetconfigent("udp6");
221 nconf = getnetconfigent("tcp6");
224 * Get buffer reservation size from sysctl, but impose reasonable
227 pktscale = nfs_bufpackets;
232 mtx_lock(&nmp->nm_mtx);
233 if (nmp->nm_sotype == SOCK_DGRAM) {
234 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * pktscale;
235 rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) +
236 NFS_MAXPKTHDR) * pktscale;
237 } else if (nmp->nm_sotype == SOCK_SEQPACKET) {
238 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * pktscale;
239 rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) +
240 NFS_MAXPKTHDR) * pktscale;
242 if (nmp->nm_sotype != SOCK_STREAM)
243 panic("nfscon sotype");
244 sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR +
245 sizeof (u_int32_t)) * pktscale;
246 rcvreserve = (nmp->nm_rsize + NFS_MAXPKTHDR +
247 sizeof (u_int32_t)) * pktscale;
249 mtx_unlock(&nmp->nm_mtx);
251 client = clnt_reconnect_create(nconf, saddr, NFS_PROG, vers,
252 sndreserve, rcvreserve);
253 CLNT_CONTROL(client, CLSET_WAITCHAN, "nfsreq");
254 if (nmp->nm_flag & NFSMNT_INT)
255 CLNT_CONTROL(client, CLSET_INTERRUPTIBLE, &one);
256 if (nmp->nm_flag & NFSMNT_RESVPORT)
257 CLNT_CONTROL(client, CLSET_PRIVPORT, &one);
258 if (nmp->nm_flag & NFSMNT_SOFT)
259 retries = nmp->nm_retry;
262 CLNT_CONTROL(client, CLSET_RETRIES, &retries);
264 mtx_lock(&nmp->nm_mtx);
265 if (nmp->nm_client) {
267 * Someone else already connected.
269 CLNT_RELEASE(client);
271 nmp->nm_client = client;
275 * Protocols that do not require connections may be optionally left
276 * unconnected for servers that reply from a port other than NFS_PORT.
278 if (!(nmp->nm_flag & NFSMNT_NOCONN)) {
279 mtx_unlock(&nmp->nm_mtx);
280 CLNT_CONTROL(client, CLSET_CONNECT, &one);
282 mtx_unlock(&nmp->nm_mtx);
285 /* Restore current thread's credentials. */
286 td->td_ucred = origcred;
288 mtx_lock(&nmp->nm_mtx);
289 /* Initialize other non-zero congestion variables */
291 mtx_unlock(&nmp->nm_mtx);
296 * NFS disconnect. Clean up and unlink.
299 nfs_disconnect(struct nfsmount *nmp)
303 mtx_lock(&nmp->nm_mtx);
304 if (nmp->nm_client) {
305 client = nmp->nm_client;
306 nmp->nm_client = NULL;
307 mtx_unlock(&nmp->nm_mtx);
309 rpc_gss_secpurge(client);
312 CLNT_RELEASE(client);
314 mtx_unlock(&nmp->nm_mtx);
319 nfs_safedisconnect(struct nfsmount *nmp)
326 nfs_getauth(struct nfsmount *nmp, struct ucred *cred)
329 rpc_gss_service_t svc;
333 switch (nmp->nm_secflavor) {
335 case RPCSEC_GSS_KRB5:
336 case RPCSEC_GSS_KRB5I:
337 case RPCSEC_GSS_KRB5P:
338 if (!nmp->nm_mech_oid) {
339 if (!rpc_gss_mech_to_oid("kerberosv5",
343 if (nmp->nm_secflavor == RPCSEC_GSS_KRB5)
344 svc = rpc_gss_svc_none;
345 else if (nmp->nm_secflavor == RPCSEC_GSS_KRB5I)
346 svc = rpc_gss_svc_integrity;
348 svc = rpc_gss_svc_privacy;
349 auth = rpc_gss_secfind(nmp->nm_client, cred,
350 nmp->nm_principal, nmp->nm_mech_oid, svc);
357 return (authunix_create(cred));
363 * Callback from the RPC code to generate up/down notifications.
366 struct nfs_feedback_arg {
367 struct nfsmount *nf_mount;
368 int nf_lastmsg; /* last tprintf */
370 struct thread *nf_td;
374 nfs_feedback(int type, int proc, void *arg)
376 struct nfs_feedback_arg *nf = (struct nfs_feedback_arg *) arg;
377 struct nfsmount *nmp = nf->nf_mount;
380 getmicrouptime(&now);
383 case FEEDBACK_REXMIT2:
384 case FEEDBACK_RECONNECT:
385 if (nf->nf_lastmsg + nmp->nm_tprintf_delay < now.tv_sec) {
386 nfs_down(nmp, nf->nf_td,
387 "not responding", 0, NFSSTA_TIMEO);
388 nf->nf_tprintfmsg = TRUE;
389 nf->nf_lastmsg = now.tv_sec;
394 nfs_up(nf->nf_mount, nf->nf_td,
395 "is alive again", NFSSTA_TIMEO, nf->nf_tprintfmsg);
401 * nfs_request - goes something like this
402 * - fill in request struct
403 * - links it into list
404 * - calls nfs_send() for first transmit
405 * - calls nfs_receive() to get reply
406 * - break down rpc header and return with nfs reply pointed to
408 * nb: always frees up mreq mbuf list
411 nfs_request(struct vnode *vp, struct mbuf *mreq, int procnum,
412 struct thread *td, struct ucred *cred, struct mbuf **mrp,
413 struct mbuf **mdp, caddr_t *dposp)
417 struct nfsmount *nmp;
424 enum nfs_rto_timer_t timer;
425 struct nfs_feedback_arg nf;
426 struct rpc_callextra ext;
430 /* Reject requests while attempting a forced unmount. */
431 if (vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF) {
435 nmp = VFSTONFS(vp->v_mount);
436 bzero(&nf, sizeof(struct nfs_feedback_arg));
439 getmicrouptime(&now);
440 nf.nf_lastmsg = now.tv_sec -
441 ((nmp->nm_tprintf_delay) - (nmp->nm_tprintf_initial_delay));
444 * XXX if not already connected call nfs_connect now. Longer
445 * term, change nfs_mount to call nfs_connect unconditionally
446 * and let clnt_reconnect_create handle reconnects.
451 auth = nfs_getauth(nmp, cred);
456 bzero(&ext, sizeof(ext));
459 ext.rc_feedback = nfs_feedback;
460 ext.rc_feedback_arg = &nf;
463 * Use a conservative timeout for RPCs other than getattr,
464 * lookup, read or write. The justification for doing "other"
465 * this way is that these RPCs happen so infrequently that
466 * timer est. would probably be stale. Also, since many of
467 * these RPCs are non-idempotent, a conservative timeout is
470 timer = nfs_rto_timer(procnum);
471 if (timer != NFS_DEFAULT_TIMER) {
472 ext.rc_timers = &nmp->nm_timers[timer - 1];
474 ext.rc_timers = NULL;
478 if (dtrace_nfsclient_nfs23_start_probe != NULL) {
482 if (nmp->nm_flag & NFSMNT_NFSV3) {
483 probe_id = nfsclient_nfs3_start_probes[procnum];
484 probe_procnum = procnum;
486 probe_id = nfsclient_nfs2_start_probes[procnum];
487 probe_procnum = nfsv2_procid[procnum];
490 (dtrace_nfsclient_nfs23_start_probe)(probe_id, vp,
491 mreq, cred, probe_procnum);
495 nfsstats.rpcrequests++;
497 timo.tv_sec = nmp->nm_timeo / NFS_HZ;
498 timo.tv_usec = (nmp->nm_timeo * 1000000) / NFS_HZ;
500 stat = CLNT_CALL_MBUF(nmp->nm_client, &ext,
501 (nmp->nm_flag & NFSMNT_NFSV3) ? procnum : nfsv2_procid[procnum],
505 * If there was a successful reply and a tprintf msg.
506 * tprintf a response.
508 if (stat == RPC_SUCCESS) {
510 } else if (stat == RPC_TIMEDOUT) {
512 } else if (stat == RPC_VERSMISMATCH) {
514 } else if (stat == RPC_PROGVERSMISMATCH) {
515 error = EPROTONOSUPPORT;
522 KASSERT(mrep != NULL, ("mrep shouldn't be NULL if no error\n"));
525 * Search for any mbufs that are not a multiple of 4 bytes long
526 * or with m_data not longword aligned.
527 * These could cause pointer alignment problems, so copy them to
528 * well aligned mbufs.
530 error = nfs_realign(&mrep, M_DONTWAIT);
531 if (error == ENOMEM) {
538 dpos = mtod(mrep, caddr_t);
539 tl = nfsm_dissect(u_int32_t *, NFSX_UNSIGNED);
541 error = fxdr_unsigned(int, *tl);
542 if ((nmp->nm_flag & NFSMNT_NFSV3) &&
543 error == NFSERR_TRYLATER) {
546 waituntil = time_second + nfs3_jukebox_delay;
547 while (time_second < waituntil) {
548 (void) tsleep(&fake_wchan, PSOCK, "nqnfstry", hz);
554 * If the File Handle was stale, invalidate the lookup
555 * cache, just in case.
560 * Skip wcc data on NFS errors for now. NetApp filers
561 * return corrupt postop attrs in the wcc data for NFS
562 * err EROFS. Not sure if they could return corrupt
563 * postop attrs for others errors.
565 if ((nmp->nm_flag & NFSMNT_NFSV3) && !nfs_skip_wcc_data_onerr) {
569 error |= NFSERR_RETERR;
576 if (dtrace_nfsclient_nfs23_done_probe != NULL) {
580 if (nmp->nm_flag & NFSMNT_NFSV3) {
581 probe_id = nfsclient_nfs3_done_probes[procnum];
582 probe_procnum = procnum;
584 probe_id = nfsclient_nfs2_done_probes[procnum];
585 probe_procnum = (nmp->nm_flag & NFSMNT_NFSV3) ?
586 procnum : nfsv2_procid[procnum];
589 (dtrace_nfsclient_nfs23_done_probe)(probe_id, vp,
590 mreq, cred, probe_procnum, 0);
602 if (dtrace_nfsclient_nfs23_done_probe != NULL) {
606 if (nmp->nm_flag & NFSMNT_NFSV3) {
607 probe_id = nfsclient_nfs3_done_probes[procnum];
608 probe_procnum = procnum;
610 probe_id = nfsclient_nfs2_done_probes[procnum];
611 probe_procnum = (nmp->nm_flag & NFSMNT_NFSV3) ?
612 procnum : nfsv2_procid[procnum];
615 (dtrace_nfsclient_nfs23_done_probe)(probe_id, vp,
616 mreq, cred, probe_procnum, error);
626 * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and
627 * wait for all requests to complete. This is used by forced unmounts
628 * to terminate any outstanding RPCs.
631 nfs_nmcancelreqs(struct nfsmount *nmp)
635 CLNT_CLOSE(nmp->nm_client);
640 * Any signal that can interrupt an NFS operation in an intr mount
641 * should be added to this set. SIGSTOP and SIGKILL cannot be masked.
643 int nfs_sig_set[] = {
653 * Check to see if one of the signals in our subset is pending on
654 * the process (in an intr mount).
657 nfs_sig_pending(sigset_t set)
661 for (i = 0 ; i < sizeof(nfs_sig_set)/sizeof(int) ; i++)
662 if (SIGISMEMBER(set, nfs_sig_set[i]))
668 * The set/restore sigmask functions are used to (temporarily) overwrite
669 * the process p_sigmask during an RPC call (for example). These are also
670 * used in other places in the NFS client that might tsleep().
673 nfs_set_sigmask(struct thread *td, sigset_t *oldset)
681 td = curthread; /* XXX */
683 /* Remove the NFS set of signals from newset */
685 mtx_lock(&p->p_sigacts->ps_mtx);
686 for (i = 0 ; i < sizeof(nfs_sig_set)/sizeof(int) ; i++) {
688 * But make sure we leave the ones already masked
689 * by the process, ie. remove the signal from the
690 * temporary signalmask only if it wasn't already
693 if (!SIGISMEMBER(td->td_sigmask, nfs_sig_set[i]) &&
694 !SIGISMEMBER(p->p_sigacts->ps_sigignore, nfs_sig_set[i]))
695 SIGDELSET(newset, nfs_sig_set[i]);
697 mtx_unlock(&p->p_sigacts->ps_mtx);
699 kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 0);
703 nfs_restore_sigmask(struct thread *td, sigset_t *set)
706 td = curthread; /* XXX */
707 kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0);
711 * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the
712 * old one after msleep() returns.
715 nfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo)
721 if ((priority & PCATCH) == 0)
722 return msleep(ident, mtx, priority, wmesg, timo);
724 td = curthread; /* XXX */
725 nfs_set_sigmask(td, &oldset);
726 error = msleep(ident, mtx, priority, wmesg, timo);
727 nfs_restore_sigmask(td, &oldset);
733 * Test for a termination condition pending on the process.
734 * This is used for NFSMNT_INT mounts.
737 nfs_sigintr(struct nfsmount *nmp, struct thread *td)
742 /* Terminate all requests while attempting a forced unmount. */
743 if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)
745 if (!(nmp->nm_flag & NFSMNT_INT))
751 tmpset = p->p_siglist;
752 SIGSETOR(tmpset, td->td_siglist);
753 SIGSETNAND(tmpset, td->td_sigmask);
754 mtx_lock(&p->p_sigacts->ps_mtx);
755 SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
756 mtx_unlock(&p->p_sigacts->ps_mtx);
757 if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist))
758 && nfs_sig_pending(tmpset)) {
767 nfs_msg(struct thread *td, const char *server, const char *msg, int error)
771 p = td ? td->td_proc : NULL;
773 tprintf(p, LOG_INFO, "nfs server %s: %s, error %d\n", server,
776 tprintf(p, LOG_INFO, "nfs server %s: %s\n", server, msg);
782 nfs_down(struct nfsmount *nmp, struct thread *td, const char *msg,
783 int error, int flags)
787 mtx_lock(&nmp->nm_mtx);
788 if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) {
789 nmp->nm_state |= NFSSTA_TIMEO;
790 mtx_unlock(&nmp->nm_mtx);
791 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
794 mtx_unlock(&nmp->nm_mtx);
795 mtx_lock(&nmp->nm_mtx);
796 if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) {
797 nmp->nm_state |= NFSSTA_LOCKTIMEO;
798 mtx_unlock(&nmp->nm_mtx);
799 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
802 mtx_unlock(&nmp->nm_mtx);
803 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error);
807 nfs_up(struct nfsmount *nmp, struct thread *td, const char *msg,
808 int flags, int tprintfmsg)
813 nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0);
816 mtx_lock(&nmp->nm_mtx);
817 if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) {
818 nmp->nm_state &= ~NFSSTA_TIMEO;
819 mtx_unlock(&nmp->nm_mtx);
820 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
823 mtx_unlock(&nmp->nm_mtx);
825 mtx_lock(&nmp->nm_mtx);
826 if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) {
827 nmp->nm_state &= ~NFSSTA_LOCKTIMEO;
828 mtx_unlock(&nmp->nm_mtx);
829 vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
832 mtx_unlock(&nmp->nm_mtx);