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-rw-r--r--sys/nfsclient/nfs_socket.c1977
1 files changed, 0 insertions, 1977 deletions
diff --git a/sys/nfsclient/nfs_socket.c b/sys/nfsclient/nfs_socket.c
deleted file mode 100644
index 26b365c..0000000
--- a/sys/nfsclient/nfs_socket.c
+++ /dev/null
@@ -1,1977 +0,0 @@
-/*-
- * Copyright (c) 1989, 1991, 1993, 1995
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Rick Macklem at The University of Guelph.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)nfs_socket.c 8.5 (Berkeley) 3/30/95
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * Socket operations for use by nfs
- */
-
-#include "opt_inet6.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/mount.h>
-#include <sys/mutex.h>
-#include <sys/proc.h>
-#include <sys/protosw.h>
-#include <sys/signalvar.h>
-#include <sys/syscallsubr.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-#include <sys/sysctl.h>
-#include <sys/syslog.h>
-#include <sys/vnode.h>
-
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-
-#include <nfs/rpcv2.h>
-#include <nfs/nfsproto.h>
-#include <nfsclient/nfs.h>
-#include <nfs/xdr_subs.h>
-#include <nfsclient/nfsm_subs.h>
-#include <nfsclient/nfsmount.h>
-#include <nfsclient/nfsnode.h>
-
-#ifdef NFS_LEGACYRPC
-
-#define TRUE 1
-#define FALSE 0
-
-static int nfs_realign_test;
-static int nfs_realign_count;
-static int nfs_bufpackets = 4;
-static int nfs_reconnects;
-static int nfs3_jukebox_delay = 10;
-static int nfs_skip_wcc_data_onerr = 1;
-static int fake_wchan;
-
-SYSCTL_DECL(_vfs_nfs);
-
-SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_test, CTLFLAG_RW, &nfs_realign_test, 0,
- "Number of realign tests done");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, realign_count, CTLFLAG_RW, &nfs_realign_count, 0,
- "Number of mbuf realignments done");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, bufpackets, CTLFLAG_RW, &nfs_bufpackets, 0,
- "Buffer reservation size 2 < x < 64");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, reconnects, CTLFLAG_RD, &nfs_reconnects, 0,
- "Number of times the nfs client has had to reconnect");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, nfs3_jukebox_delay, CTLFLAG_RW, &nfs3_jukebox_delay, 0,
- "Number of seconds to delay a retry after receiving EJUKEBOX");
-SYSCTL_INT(_vfs_nfs, OID_AUTO, skip_wcc_data_onerr, CTLFLAG_RW, &nfs_skip_wcc_data_onerr, 0,
- "Disable weak cache consistency checking when server returns an error");
-
-/*
- * There is a congestion window for outstanding rpcs maintained per mount
- * point. The cwnd size is adjusted in roughly the way that:
- * Van Jacobson, Congestion avoidance and Control, In "Proceedings of
- * SIGCOMM '88". ACM, August 1988.
- * describes for TCP. The cwnd size is chopped in half on a retransmit timeout
- * and incremented by 1/cwnd when each rpc reply is received and a full cwnd
- * of rpcs is in progress.
- * (The sent count and cwnd are scaled for integer arith.)
- * Variants of "slow start" were tried and were found to be too much of a
- * performance hit (ave. rtt 3 times larger),
- * I suspect due to the large rtt that nfs rpcs have.
- */
-#define NFS_CWNDSCALE 256
-#define NFS_MAXCWND (NFS_CWNDSCALE * 32)
-#define NFS_NBACKOFF 8
-static int nfs_backoff[NFS_NBACKOFF] = { 2, 4, 8, 16, 32, 64, 128, 256, };
-struct callout nfs_callout;
-
-static int nfs_msg(struct thread *, const char *, const char *, int);
-static int nfs_realign(struct mbuf **pm, int hsiz);
-static int nfs_reply(struct nfsreq *);
-static void nfs_softterm(struct nfsreq *rep);
-static int nfs_reconnect(struct nfsreq *rep);
-static int nfs_clnt_tcp_soupcall(struct socket *so, void *arg, int waitflag);
-static int nfs_clnt_udp_soupcall(struct socket *so, void *arg, int waitflag);
-
-extern struct mtx nfs_reqq_mtx;
-
-/*
- * RTT estimator
- */
-
-static enum nfs_rto_timer_t nfs_proct[NFS_NPROCS] = {
- NFS_DEFAULT_TIMER, /* NULL */
- NFS_GETATTR_TIMER, /* GETATTR */
- NFS_DEFAULT_TIMER, /* SETATTR */
- NFS_LOOKUP_TIMER, /* LOOKUP */
- NFS_GETATTR_TIMER, /* ACCESS */
- NFS_READ_TIMER, /* READLINK */
- NFS_READ_TIMER, /* READ */
- NFS_WRITE_TIMER, /* WRITE */
- NFS_DEFAULT_TIMER, /* CREATE */
- NFS_DEFAULT_TIMER, /* MKDIR */
- NFS_DEFAULT_TIMER, /* SYMLINK */
- NFS_DEFAULT_TIMER, /* MKNOD */
- NFS_DEFAULT_TIMER, /* REMOVE */
- NFS_DEFAULT_TIMER, /* RMDIR */
- NFS_DEFAULT_TIMER, /* RENAME */
- NFS_DEFAULT_TIMER, /* LINK */
- NFS_READ_TIMER, /* READDIR */
- NFS_READ_TIMER, /* READDIRPLUS */
- NFS_DEFAULT_TIMER, /* FSSTAT */
- NFS_DEFAULT_TIMER, /* FSINFO */
- NFS_DEFAULT_TIMER, /* PATHCONF */
- NFS_DEFAULT_TIMER, /* COMMIT */
- NFS_DEFAULT_TIMER, /* NOOP */
-};
-
-/*
- * Choose the correct RTT timer for this NFS procedure.
- */
-static inline enum nfs_rto_timer_t
-nfs_rto_timer(u_int32_t procnum)
-{
- return nfs_proct[procnum];
-}
-
-/*
- * Initialize the RTT estimator state for a new mount point.
- */
-static void
-nfs_init_rtt(struct nfsmount *nmp)
-{
- int i;
-
- for (i = 0; i < NFS_MAX_TIMER; i++)
- nmp->nm_srtt[i] = NFS_INITRTT;
- for (i = 0; i < NFS_MAX_TIMER; i++)
- nmp->nm_sdrtt[i] = 0;
-}
-
-/*
- * Update a mount point's RTT estimator state using data from the
- * passed-in request.
- *
- * Use a gain of 0.125 on the mean and a gain of 0.25 on the deviation.
- *
- * NB: Since the timer resolution of NFS_HZ is so course, it can often
- * result in r_rtt == 0. Since r_rtt == N means that the actual RTT is
- * between N + dt and N + 2 - dt ticks, add 1 before calculating the
- * update values.
- */
-static void
-nfs_update_rtt(struct nfsreq *rep)
-{
- int t1 = rep->r_rtt + 1;
- int index = nfs_rto_timer(rep->r_procnum) - 1;
- int *srtt = &rep->r_nmp->nm_srtt[index];
- int *sdrtt = &rep->r_nmp->nm_sdrtt[index];
-
- t1 -= *srtt >> 3;
- *srtt += t1;
- if (t1 < 0)
- t1 = -t1;
- t1 -= *sdrtt >> 2;
- *sdrtt += t1;
-}
-
-/*
- * Estimate RTO for an NFS RPC sent via an unreliable datagram.
- *
- * Use the mean and mean deviation of RTT for the appropriate type
- * of RPC for the frequent RPCs and a default for the others.
- * The justification for doing "other" this way is that these RPCs
- * happen so infrequently that timer est. would probably be stale.
- * Also, since many of these RPCs are non-idempotent, a conservative
- * timeout is desired.
- *
- * getattr, lookup - A+2D
- * read, write - A+4D
- * other - nm_timeo
- */
-static int
-nfs_estimate_rto(struct nfsmount *nmp, u_int32_t procnum)
-{
- enum nfs_rto_timer_t timer = nfs_rto_timer(procnum);
- int index = timer - 1;
- int rto;
-
- switch (timer) {
- case NFS_GETATTR_TIMER:
- case NFS_LOOKUP_TIMER:
- rto = ((nmp->nm_srtt[index] + 3) >> 2) +
- ((nmp->nm_sdrtt[index] + 1) >> 1);
- break;
- case NFS_READ_TIMER:
- case NFS_WRITE_TIMER:
- rto = ((nmp->nm_srtt[index] + 7) >> 3) +
- (nmp->nm_sdrtt[index] + 1);
- break;
- default:
- rto = nmp->nm_timeo;
- return (rto);
- }
-
- if (rto < NFS_MINRTO)
- rto = NFS_MINRTO;
- else if (rto > NFS_MAXRTO)
- rto = NFS_MAXRTO;
-
- return (rto);
-}
-
-
-/*
- * Initialize sockets and congestion for a new NFS connection.
- * We do not free the sockaddr if error.
- */
-int
-nfs_connect(struct nfsmount *nmp, struct nfsreq *rep)
-{
- struct socket *so;
- int error, rcvreserve, sndreserve;
- int pktscale;
- struct sockaddr *saddr;
- struct ucred *origcred;
- struct thread *td = curthread;
-
- /*
- * We need to establish the socket using the credentials of
- * the mountpoint. Some parts of this process (such as
- * sobind() and soconnect()) will use the curent thread's
- * credential instead of the socket credential. To work
- * around this, temporarily change the current thread's
- * credential to that of the mountpoint.
- *
- * XXX: It would be better to explicitly pass the correct
- * credential to sobind() and soconnect().
- */
- origcred = td->td_ucred;
- td->td_ucred = nmp->nm_mountp->mnt_cred;
-
- if (nmp->nm_sotype == SOCK_STREAM) {
- mtx_lock(&nmp->nm_mtx);
- nmp->nm_nfstcpstate.flags |= NFS_TCP_EXPECT_RPCMARKER;
- nmp->nm_nfstcpstate.rpcresid = 0;
- mtx_unlock(&nmp->nm_mtx);
- }
- nmp->nm_so = NULL;
- saddr = nmp->nm_nam;
- error = socreate(saddr->sa_family, &nmp->nm_so, nmp->nm_sotype,
- nmp->nm_soproto, nmp->nm_mountp->mnt_cred, td);
- if (error)
- goto bad;
- so = nmp->nm_so;
- nmp->nm_soflags = so->so_proto->pr_flags;
-
- /*
- * Some servers require that the client port be a reserved port number.
- */
- if (nmp->nm_flag & NFSMNT_RESVPORT) {
- struct sockopt sopt;
- int ip, ip2, len;
- struct sockaddr_in6 ssin;
- struct sockaddr *sa;
-
- bzero(&sopt, sizeof sopt);
- switch(saddr->sa_family) {
- case AF_INET:
- sopt.sopt_level = IPPROTO_IP;
- sopt.sopt_name = IP_PORTRANGE;
- ip = IP_PORTRANGE_LOW;
- ip2 = IP_PORTRANGE_DEFAULT;
- len = sizeof (struct sockaddr_in);
- break;
-#ifdef INET6
- case AF_INET6:
- sopt.sopt_level = IPPROTO_IPV6;
- sopt.sopt_name = IPV6_PORTRANGE;
- ip = IPV6_PORTRANGE_LOW;
- ip2 = IPV6_PORTRANGE_DEFAULT;
- len = sizeof (struct sockaddr_in6);
- break;
-#endif
- default:
- goto noresvport;
- }
- sa = (struct sockaddr *)&ssin;
- bzero(sa, len);
- sa->sa_len = len;
- sa->sa_family = saddr->sa_family;
- sopt.sopt_dir = SOPT_SET;
- sopt.sopt_val = (void *)&ip;
- sopt.sopt_valsize = sizeof(ip);
- error = sosetopt(so, &sopt);
- if (error)
- goto bad;
- error = sobind(so, sa, td);
- if (error)
- goto bad;
- ip = ip2;
- error = sosetopt(so, &sopt);
- if (error)
- goto bad;
- noresvport: ;
- }
-
- /*
- * Protocols that do not require connections may be optionally left
- * unconnected for servers that reply from a port other than NFS_PORT.
- */
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_flag & NFSMNT_NOCONN) {
- if (nmp->nm_soflags & PR_CONNREQUIRED) {
- error = ENOTCONN;
- mtx_unlock(&nmp->nm_mtx);
- goto bad;
- } else
- mtx_unlock(&nmp->nm_mtx);
- } else {
- mtx_unlock(&nmp->nm_mtx);
- error = soconnect(so, nmp->nm_nam, td);
- if (error)
- goto bad;
-
- /*
- * Wait for the connection to complete. Cribbed from the
- * connect system call but with the wait timing out so
- * that interruptible mounts don't hang here for a long time.
- */
- SOCK_LOCK(so);
- while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
- (void) msleep(&so->so_timeo, SOCK_MTX(so),
- PSOCK, "nfscon", 2 * hz);
- if ((so->so_state & SS_ISCONNECTING) &&
- so->so_error == 0 && rep &&
- (error = nfs_sigintr(nmp, rep, rep->r_td)) != 0) {
- so->so_state &= ~SS_ISCONNECTING;
- SOCK_UNLOCK(so);
- goto bad;
- }
- }
- if (so->so_error) {
- error = so->so_error;
- so->so_error = 0;
- SOCK_UNLOCK(so);
- goto bad;
- }
- SOCK_UNLOCK(so);
- }
- so->so_rcv.sb_timeo = 12 * hz;
- if (nmp->nm_sotype == SOCK_STREAM)
- so->so_snd.sb_timeo = 1 * hz; /* 1s snd timeout for NFS/TCP */
- else
- so->so_snd.sb_timeo = 5 * hz;
-
- /*
- * Get buffer reservation size from sysctl, but impose reasonable
- * limits.
- */
- pktscale = nfs_bufpackets;
- if (pktscale < 2)
- pktscale = 2;
- if (pktscale > 64)
- pktscale = 64;
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_sotype == SOCK_DGRAM) {
- sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * pktscale;
- rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) +
- NFS_MAXPKTHDR) * pktscale;
- } else if (nmp->nm_sotype == SOCK_SEQPACKET) {
- sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR) * pktscale;
- rcvreserve = (max(nmp->nm_rsize, nmp->nm_readdirsize) +
- NFS_MAXPKTHDR) * pktscale;
- } else {
- if (nmp->nm_sotype != SOCK_STREAM)
- panic("nfscon sotype");
- if (so->so_proto->pr_flags & PR_CONNREQUIRED) {
- struct sockopt sopt;
- int val;
-
- bzero(&sopt, sizeof sopt);
- sopt.sopt_dir = SOPT_SET;
- sopt.sopt_level = SOL_SOCKET;
- sopt.sopt_name = SO_KEEPALIVE;
- sopt.sopt_val = &val;
- sopt.sopt_valsize = sizeof val;
- val = 1;
- mtx_unlock(&nmp->nm_mtx);
- sosetopt(so, &sopt);
- mtx_lock(&nmp->nm_mtx);
- }
- if (so->so_proto->pr_protocol == IPPROTO_TCP) {
- struct sockopt sopt;
- int val;
-
- bzero(&sopt, sizeof sopt);
- sopt.sopt_dir = SOPT_SET;
- sopt.sopt_level = IPPROTO_TCP;
- sopt.sopt_name = TCP_NODELAY;
- sopt.sopt_val = &val;
- sopt.sopt_valsize = sizeof val;
- val = 1;
- mtx_unlock(&nmp->nm_mtx);
- sosetopt(so, &sopt);
- mtx_lock(&nmp->nm_mtx);
- }
- sndreserve = (nmp->nm_wsize + NFS_MAXPKTHDR +
- sizeof (u_int32_t)) * pktscale;
- rcvreserve = (nmp->nm_rsize + NFS_MAXPKTHDR +
- sizeof (u_int32_t)) * pktscale;
- }
- mtx_unlock(&nmp->nm_mtx);
- error = soreserve(so, sndreserve, rcvreserve);
- if (error)
- goto bad;
- SOCKBUF_LOCK(&so->so_rcv);
- so->so_rcv.sb_flags |= SB_NOINTR;
- if (so->so_type == SOCK_STREAM)
- soupcall_set(so, SO_RCV, nfs_clnt_tcp_soupcall, nmp);
- else
- soupcall_set(so, SO_RCV, nfs_clnt_udp_soupcall, nmp);
- SOCKBUF_UNLOCK(&so->so_rcv);
- SOCKBUF_LOCK(&so->so_snd);
- so->so_snd.sb_flags |= SB_NOINTR;
- SOCKBUF_UNLOCK(&so->so_snd);
-
- /* Restore current thread's credentials. */
- td->td_ucred = origcred;
-
- mtx_lock(&nmp->nm_mtx);
- /* Initialize other non-zero congestion variables */
- nfs_init_rtt(nmp);
- nmp->nm_cwnd = NFS_MAXCWND / 2; /* Initial send window */
- nmp->nm_sent = 0;
- nmp->nm_timeouts = 0;
- mtx_unlock(&nmp->nm_mtx);
- return (0);
-
-bad:
- /* Restore current thread's credentials. */
- td->td_ucred = origcred;
-
- nfs_disconnect(nmp);
- return (error);
-}
-
-static void
-nfs_wakup_reconnectors(struct nfsmount *nmp)
-{
- KASSERT(mtx_owned(&nmp->nm_mtx), ("NFS mnt lock not owned !"));
- if (--nmp->nm_nfstcpstate.sock_send_inprog == 0 &&
- (nmp->nm_nfstcpstate.flags & NFS_TCP_WAIT_WRITE_DRAIN)) {
- nmp->nm_nfstcpstate.flags &= ~NFS_TCP_WAIT_WRITE_DRAIN;
- wakeup((caddr_t)&nmp->nm_nfstcpstate.sock_send_inprog);
- }
-}
-
-/*
- * Reconnect routine:
- * Called when a connection is broken on a reliable protocol.
- * - clean up the old socket
- * - nfs_connect() again
- * - set R_MUSTRESEND for all outstanding requests on mount point
- * If this fails the mount point is DEAD!
- * nb: Must be called with the nfs_sndlock() set on the mount point.
- */
-static int
-nfs_reconnect(struct nfsreq *rep)
-{
- struct nfsreq *rp;
- struct nfsmount *nmp = rep->r_nmp;
- int error;
- int slpflag = 0;
-
- KASSERT(mtx_owned(&nmp->nm_mtx), ("NFS mnt lock not owned !"));
- if (nmp->nm_flag & NFSMNT_INT)
- slpflag = PCATCH;
- /*
- * Wait for any pending writes to this socket to drain (or timeout).
- */
- while (nmp->nm_nfstcpstate.sock_send_inprog > 0) {
- nmp->nm_nfstcpstate.flags |= NFS_TCP_WAIT_WRITE_DRAIN;
- error = msleep((caddr_t)&nmp->nm_nfstcpstate.sock_send_inprog,
- &nmp->nm_mtx, slpflag | (PZERO - 1), "nfscon", 0);
- }
- /*
- * Grab the nfs_connect_lock to serialize connects.
- * After grabbing the nfs_connect_lock, check if a reconnect is necessary or
- * if someone else beat us to the connect !
- */
- error = nfs_connect_lock(rep);
- if (error)
- goto unlock_exit;
- if ((nmp->nm_nfstcpstate.flags & NFS_TCP_FORCE_RECONNECT) == 0)
- goto unlock_exit;
- else
- mtx_unlock(&nmp->nm_mtx);
-
- nfs_reconnects++;
- nfs_disconnect(nmp);
- while ((error = nfs_connect(nmp, rep)) != 0) {
- if (error == ERESTART)
- error = EINTR;
- if (error == EIO || error == EINTR) {
- mtx_lock(&nmp->nm_mtx);
- goto unlock_exit;
- }
- (void) tsleep(&fake_wchan, PSOCK, "nfscon", hz);
- }
-
- /*
- * Clear the FORCE_RECONNECT flag only after the connect
- * succeeds. To prevent races between multiple processes
- * waiting on the mountpoint where the connection is being
- * torn down. The first one to acquire the sndlock will
- * retry the connection. The others block on the sndlock
- * until the connection is established successfully, and
- * then re-transmit the request.
- */
- mtx_lock(&nmp->nm_mtx);
- nmp->nm_nfstcpstate.flags &= ~NFS_TCP_FORCE_RECONNECT;
- nmp->nm_nfstcpstate.rpcresid = 0;
- mtx_unlock(&nmp->nm_mtx);
-
- /*
- * Loop through outstanding request list and fix up all requests
- * on old socket.
- */
- mtx_lock(&nfs_reqq_mtx);
- TAILQ_FOREACH(rp, &nfs_reqq, r_chain) {
- if (rp->r_nmp == nmp) {
- mtx_lock(&rp->r_mtx);
- rp->r_flags |= R_MUSTRESEND;
- mtx_unlock(&rp->r_mtx);
- }
- }
- mtx_unlock(&nfs_reqq_mtx);
- mtx_lock(&nmp->nm_mtx);
-unlock_exit:
- nfs_connect_unlock(rep);
- mtx_unlock(&nmp->nm_mtx);
- return (error);
-}
-
-/*
- * NFS disconnect. Clean up and unlink.
- */
-void
-nfs_disconnect(struct nfsmount *nmp)
-{
- struct socket *so;
-
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_so) {
- so = nmp->nm_so;
- nmp->nm_so = NULL;
- mtx_unlock(&nmp->nm_mtx);
- SOCKBUF_LOCK(&so->so_rcv);
- soupcall_clear(so, SO_RCV);
- SOCKBUF_UNLOCK(&so->so_rcv);
- soshutdown(so, SHUT_WR);
- soclose(so);
- } else
- mtx_unlock(&nmp->nm_mtx);
-}
-
-void
-nfs_safedisconnect(struct nfsmount *nmp)
-{
- struct nfsreq dummyreq;
-
- bzero(&dummyreq, sizeof(dummyreq));
- dummyreq.r_nmp = nmp;
- nfs_disconnect(nmp);
-}
-
-/*
- * This is the nfs send routine. For connection based socket types, it
- * must be called with an nfs_sndlock() on the socket.
- * - return EINTR if the RPC is terminated, 0 otherwise
- * - set R_MUSTRESEND if the send fails for any reason
- * - do any cleanup required by recoverable socket errors (?)
- */
-int
-nfs_send(struct socket *so, struct sockaddr *nam, struct mbuf *top,
- struct nfsreq *rep)
-{
- struct sockaddr *sendnam;
- int error, error2, soflags, flags;
-
- KASSERT(rep, ("nfs_send: called with rep == NULL"));
-
- error = nfs_sigintr(rep->r_nmp, rep, rep->r_td);
- if (error) {
- m_freem(top);
- return (error);
- }
- mtx_lock(&rep->r_nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- if ((so = rep->r_nmp->nm_so) == NULL) {
- rep->r_flags |= R_MUSTRESEND;
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&rep->r_nmp->nm_mtx);
- m_freem(top);
- return (EPIPE);
- }
- rep->r_flags &= ~R_MUSTRESEND;
- soflags = rep->r_nmp->nm_soflags;
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&rep->r_nmp->nm_mtx);
-
- if ((soflags & PR_CONNREQUIRED) || (so->so_state & SS_ISCONNECTED))
- sendnam = NULL;
- else
- sendnam = nam;
- if (so->so_type == SOCK_SEQPACKET)
- flags = MSG_EOR;
- else
- flags = 0;
-
- error = sosend(so, sendnam, 0, top, 0, flags, curthread /*XXX*/);
- if (error == ENOBUFS && so->so_type == SOCK_DGRAM) {
- error = 0;
- mtx_lock(&rep->r_mtx);
- rep->r_flags |= R_MUSTRESEND;
- mtx_unlock(&rep->r_mtx);
- }
-
- if (error) {
- /*
- * Don't report EPIPE errors on nfs sockets.
- * These can be due to idle tcp mounts which will be closed by
- * netapp, solaris, etc. if left idle too long.
- */
- if (error != EPIPE) {
- log(LOG_INFO, "nfs send error %d for server %s\n",
- error,
- rep->r_nmp->nm_mountp->mnt_stat.f_mntfromname);
- }
- /*
- * Deal with errors for the client side.
- */
- error2 = NFS_SIGREP(rep);
- if (error2)
- error = error2;
- else {
- mtx_lock(&rep->r_mtx);
- rep->r_flags |= R_MUSTRESEND;
- mtx_unlock(&rep->r_mtx);
- }
-
- /*
- * Handle any recoverable (soft) socket errors here. (?)
- * Make EWOULDBLOCK a recoverable error, we'll rexmit from nfs_timer().
- */
- if (error != EINTR && error != ERESTART && error != EIO && error != EPIPE)
- error = 0;
- }
- return (error);
-}
-
-int
-nfs_reply(struct nfsreq *rep)
-{
- register struct socket *so;
- register struct mbuf *m;
- int error = 0, sotype, slpflag;
- struct nfsmount *nmp = rep->r_nmp;
-
- sotype = nmp->nm_sotype;
- /*
- * For reliable protocols, lock against other senders/receivers
- * in case a reconnect is necessary.
- */
- if (sotype != SOCK_DGRAM) {
-tryagain:
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- if (rep->r_mrep) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- return (0);
- }
- if (rep->r_flags & R_SOFTTERM) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- return (EINTR);
- }
- so = nmp->nm_so;
- if (!so ||
- (nmp->nm_nfstcpstate.flags & NFS_TCP_FORCE_RECONNECT)) {
- mtx_unlock(&rep->r_mtx);
- nmp->nm_nfstcpstate.flags |= NFS_TCP_FORCE_RECONNECT;
- error = nfs_reconnect(rep);
- if (error)
- return (error);
- goto tryagain;
- }
- while (rep->r_flags & R_MUSTRESEND) {
- mtx_unlock(&rep->r_mtx);
- nmp->nm_nfstcpstate.sock_send_inprog++;
- mtx_unlock(&nmp->nm_mtx);
- m = m_copym(rep->r_mreq, 0, M_COPYALL, M_WAIT);
- nfsstats.rpcretries++;
- error = nfs_send(so, nmp->nm_nam, m, rep);
- if (error) {
- mtx_lock(&nmp->nm_mtx);
- nfs_wakup_reconnectors(nmp);
- if (!(error == EINTR || error == ERESTART)) {
- nmp->nm_nfstcpstate.flags |= NFS_TCP_FORCE_RECONNECT;
- error = nfs_reconnect(rep);
- } else
- mtx_unlock(&nmp->nm_mtx);
- if (error)
- return (error);
- goto tryagain;
- } else {
- mtx_lock(&nmp->nm_mtx);
- nfs_wakup_reconnectors(nmp);
- mtx_lock(&rep->r_mtx);
- }
- }
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- }
- slpflag = 0;
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_flag & NFSMNT_INT)
- slpflag = PCATCH;
- mtx_unlock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- while ((rep->r_mrep == NULL) && (error == 0) &&
- ((rep->r_flags & R_SOFTTERM) == 0) &&
- ((sotype == SOCK_DGRAM) || ((rep->r_flags & R_MUSTRESEND) == 0)))
- error = msleep((caddr_t)rep, &rep->r_mtx,
- slpflag | (PZERO - 1), "nfsreq", 0);
- if (error == EINTR || error == ERESTART) {
- /* NFS operations aren't restartable. Map ERESTART to EINTR */
- mtx_unlock(&rep->r_mtx);
- return (EINTR);
- }
- if (rep->r_flags & R_SOFTTERM) {
- /* Request was terminated because we exceeded the retries (soft mount) */
- mtx_unlock(&rep->r_mtx);
- return (ETIMEDOUT);
- }
- mtx_unlock(&rep->r_mtx);
- if (sotype == SOCK_STREAM) {
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- if (((nmp->nm_nfstcpstate.flags & NFS_TCP_FORCE_RECONNECT) ||
- (rep->r_flags & R_MUSTRESEND))) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- goto tryagain;
- } else {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- }
- }
- return (error);
-}
-
-/*
- * XXX TO DO
- * Make nfs_realign() non-blocking. Also make nfsm_dissect() nonblocking.
- */
-static void
-nfs_clnt_match_xid(struct socket *so,
- struct nfsmount *nmp,
- struct mbuf *mrep)
-{
- struct mbuf *md;
- caddr_t dpos;
- u_int32_t rxid, *tl;
- struct nfsreq *rep;
- int error;
-
- /*
- * Search for any mbufs that are not a multiple of 4 bytes long
- * or with m_data not longword aligned.
- * These could cause pointer alignment problems, so copy them to
- * well aligned mbufs.
- */
- if (nfs_realign(&mrep, 5 * NFSX_UNSIGNED) == ENOMEM) {
- m_freem(mrep);
- nfsstats.rpcinvalid++;
- return;
- }
-
- /*
- * Get the xid and check that it is an rpc reply
- */
- md = mrep;
- dpos = mtod(md, caddr_t);
- tl = nfsm_dissect_nonblock(u_int32_t *, 2*NFSX_UNSIGNED);
- rxid = *tl++;
- if (*tl != rpc_reply) {
- m_freem(mrep);
-nfsmout:
- nfsstats.rpcinvalid++;
- return;
- }
-
- mtx_lock(&nfs_reqq_mtx);
- /*
- * Loop through the request list to match up the reply
- * Iff no match, just drop the datagram
- */
- TAILQ_FOREACH(rep, &nfs_reqq, r_chain) {
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- if (rep->r_mrep == NULL && rxid == rep->r_xid) {
- /* Found it.. */
- rep->r_mrep = mrep;
- rep->r_md = md;
- rep->r_dpos = dpos;
- /*
- * Update congestion window.
- * Do the additive increase of
- * one rpc/rtt.
- */
- if (nmp->nm_cwnd <= nmp->nm_sent) {
- nmp->nm_cwnd +=
- (NFS_CWNDSCALE * NFS_CWNDSCALE +
- (nmp->nm_cwnd >> 1)) / nmp->nm_cwnd;
- if (nmp->nm_cwnd > NFS_MAXCWND)
- nmp->nm_cwnd = NFS_MAXCWND;
- }
- if (rep->r_flags & R_SENT) {
- rep->r_flags &= ~R_SENT;
- nmp->nm_sent -= NFS_CWNDSCALE;
- }
- if (rep->r_flags & R_TIMING)
- nfs_update_rtt(rep);
- nmp->nm_timeouts = 0;
- wakeup((caddr_t)rep);
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- break;
- }
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- }
- /*
- * If not matched to a request, drop it.
- * If it's mine, wake up requestor.
- */
- if (rep == 0) {
- nfsstats.rpcunexpected++;
- m_freem(mrep);
- }
- mtx_unlock(&nfs_reqq_mtx);
-}
-
-static void
-nfs_mark_for_reconnect(struct nfsmount *nmp)
-{
- struct nfsreq *rp;
-
- mtx_lock(&nmp->nm_mtx);
- nmp->nm_nfstcpstate.flags |= NFS_TCP_FORCE_RECONNECT;
- mtx_unlock(&nmp->nm_mtx);
- /*
- * Wakeup all processes that are waiting for replies
- * on this mount point. One of them does the reconnect.
- */
- mtx_lock(&nfs_reqq_mtx);
- TAILQ_FOREACH(rp, &nfs_reqq, r_chain) {
- if (rp->r_nmp == nmp) {
- mtx_lock(&rp->r_mtx);
- rp->r_flags |= R_MUSTRESEND;
- wakeup((caddr_t)rp);
- mtx_unlock(&rp->r_mtx);
- }
- }
- mtx_unlock(&nfs_reqq_mtx);
-}
-
-static int
-nfstcp_readable(struct socket *so, int bytes)
-{
- int retval;
-
- SOCKBUF_LOCK_ASSERT(&so->so_rcv);
- retval = (so->so_rcv.sb_cc >= (bytes) ||
- (so->so_rcv.sb_state & SBS_CANTRCVMORE) ||
- so->so_error);
- return (retval);
-}
-
-#define nfstcp_marker_readable(so) nfstcp_readable(so, sizeof(u_int32_t))
-
-static int
-nfs_copy_len(struct mbuf *mp, char *buf, int len)
-{
- while (len > 0 && mp != NULL) {
- int copylen = min(len, mp->m_len);
-
- bcopy(mp->m_data, buf, copylen);
- buf += copylen;
- len -= copylen;
- mp = mp->m_next;
- }
- return (len);
-}
-
-static int
-nfs_clnt_tcp_soupcall(struct socket *so, void *arg, int waitflag)
-{
- struct nfsmount *nmp = (struct nfsmount *)arg;
- struct mbuf *mp = NULL;
- struct uio auio;
- int error;
- u_int32_t len;
- int rcvflg;
-
- /*
- * Don't pick any more data from the socket if we've marked the
- * mountpoint for reconnect.
- */
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_nfstcpstate.flags & NFS_TCP_FORCE_RECONNECT) {
- mtx_unlock(&nmp->nm_mtx);
- return (SU_OK);
- } else
- mtx_unlock(&nmp->nm_mtx);
- auio.uio_td = curthread;
- auio.uio_segflg = UIO_SYSSPACE;
- auio.uio_rw = UIO_READ;
- for ( ; ; ) {
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_nfstcpstate.flags & NFS_TCP_EXPECT_RPCMARKER) {
- int resid;
-
- mtx_unlock(&nmp->nm_mtx);
- if (!nfstcp_marker_readable(so)) {
- /* Marker is not readable */
- return (SU_OK);
- }
- SOCKBUF_UNLOCK(&so->so_rcv);
- auio.uio_resid = sizeof(u_int32_t);
- auio.uio_iov = NULL;
- auio.uio_iovcnt = 0;
- mp = NULL;
- rcvflg = (MSG_DONTWAIT | MSG_SOCALLBCK);
- error = soreceive(so, (struct sockaddr **)0, &auio,
- &mp, (struct mbuf **)0, &rcvflg);
- SOCKBUF_LOCK(&so->so_rcv);
- /*
- * We've already tested that the socket is readable. 2 cases
- * here, we either read 0 bytes (client closed connection),
- * or got some other error. In both cases, we tear down the
- * connection.
- */
- if (error || auio.uio_resid > 0) {
- if (error && error != ECONNRESET) {
- log(LOG_ERR,
- "nfs/tcp clnt: Error %d reading socket, tearing down TCP connection\n",
- error);
- }
- goto mark_reconnect;
- }
- if (mp == NULL)
- panic("nfs_clnt_tcp_soupcall: Got empty mbuf chain from sorecv\n");
- /*
- * Sigh. We can't do the obvious thing here (which would
- * be to have soreceive copy the length from mbufs for us).
- * Calling uiomove() from the context of a socket callback
- * (even for kernel-kernel copies) leads to LORs (since
- * we hold network locks at this point).
- */
- if ((resid = nfs_copy_len(mp, (char *)&len,
- sizeof(u_int32_t)))) {
- log(LOG_ERR, "%s (%d) from nfs server %s\n",
- "Bad RPC HDR length",
- (int)(sizeof(u_int32_t) - resid),
- nmp->nm_mountp->mnt_stat.f_mntfromname);
- goto mark_reconnect;
- }
- len = ntohl(len) & ~0x80000000;
- m_freem(mp);
- /*
- * This is SERIOUS! We are out of sync with the sender
- * and forcing a disconnect/reconnect is all I can do.
- */
- if (len > NFS_MAXPACKET || len == 0) {
- log(LOG_ERR, "%s (%d) from nfs server %s\n",
- "impossible packet length",
- len,
- nmp->nm_mountp->mnt_stat.f_mntfromname);
- goto mark_reconnect;
- }
- mtx_lock(&nmp->nm_mtx);
- nmp->nm_nfstcpstate.rpcresid = len;
- nmp->nm_nfstcpstate.flags &= ~(NFS_TCP_EXPECT_RPCMARKER);
- mtx_unlock(&nmp->nm_mtx);
- } else
- mtx_unlock(&nmp->nm_mtx);
-
- /*
- * Processed RPC marker or no RPC marker to process.
- * Pull in and process data.
- */
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_nfstcpstate.rpcresid > 0) {
- mtx_unlock(&nmp->nm_mtx);
- if (!nfstcp_readable(so, nmp->nm_nfstcpstate.rpcresid)) {
- /* All data not readable */
- return (SU_OK);
- }
- SOCKBUF_UNLOCK(&so->so_rcv);
- auio.uio_resid = nmp->nm_nfstcpstate.rpcresid;
- auio.uio_iov = NULL;
- auio.uio_iovcnt = 0;
- mp = NULL;
- rcvflg = (MSG_DONTWAIT | MSG_SOCALLBCK);
- error = soreceive(so, (struct sockaddr **)0, &auio,
- &mp, (struct mbuf **)0, &rcvflg);
- SOCKBUF_LOCK(&so->so_rcv);
- if (error || auio.uio_resid > 0) {
- if (error && error != ECONNRESET) {
- log(LOG_ERR,
- "nfs/tcp clnt: Error %d reading socket, tearing down TCP connection\n",
- error);
- }
- goto mark_reconnect;
- }
- if (mp == NULL)
- panic("nfs_clnt_tcp_soupcall: Got empty mbuf chain from sorecv\n");
- mtx_lock(&nmp->nm_mtx);
- nmp->nm_nfstcpstate.rpcresid = 0;
- nmp->nm_nfstcpstate.flags |= NFS_TCP_EXPECT_RPCMARKER;
- mtx_unlock(&nmp->nm_mtx);
- /* We got the entire RPC reply. Match XIDs and wake up requestor */
- nfs_clnt_match_xid(so, nmp, mp);
- } else
- mtx_unlock(&nmp->nm_mtx);
- }
-
-mark_reconnect:
- nfs_mark_for_reconnect(nmp);
- return (SU_OK);
-}
-
-static int
-nfs_clnt_udp_soupcall(struct socket *so, void *arg, int waitflag)
-{
- struct nfsmount *nmp = (struct nfsmount *)arg;
- struct uio auio;
- struct mbuf *mp = NULL;
- struct mbuf *control = NULL;
- int error, rcvflag;
-
- SOCKBUF_UNLOCK(&so->so_rcv);
- auio.uio_resid = 1000000;
- auio.uio_td = curthread;
- rcvflag = MSG_DONTWAIT;
- auio.uio_resid = 1000000000;
- do {
- mp = control = NULL;
- error = soreceive(so, NULL, &auio, &mp, &control, &rcvflag);
- if (control)
- m_freem(control);
- if (mp)
- nfs_clnt_match_xid(so, nmp, mp);
- } while (mp && !error);
- SOCKBUF_LOCK(&so->so_rcv);
- return (SU_OK);
-}
-
-/*
- * nfs_request - goes something like this
- * - fill in request struct
- * - links it into list
- * - calls nfs_send() for first transmit
- * - calls nfs_receive() to get reply
- * - break down rpc header and return with nfs reply pointed to
- * by mrep or error
- * nb: always frees up mreq mbuf list
- */
-int
-nfs_request(struct vnode *vp, struct mbuf *mrest, int procnum,
- struct thread *td, struct ucred *cred, struct mbuf **mrp,
- struct mbuf **mdp, caddr_t *dposp)
-{
- struct mbuf *mrep, *m2;
- struct nfsreq *rep;
- u_int32_t *tl;
- int i;
- struct nfsmount *nmp;
- struct mbuf *m, *md, *mheadend;
- time_t waituntil;
- caddr_t dpos;
- int error = 0, mrest_len, auth_len, auth_type;
- struct timeval now;
- u_int32_t *xidp;
-
- /* Reject requests while attempting a forced unmount. */
- if (vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF) {
- m_freem(mrest);
- return (ESTALE);
- }
- nmp = VFSTONFS(vp->v_mount);
- rep = malloc(sizeof(struct nfsreq), M_NFSREQ, M_WAITOK);
- bzero(rep, sizeof(struct nfsreq));
- rep->r_nmp = nmp;
- rep->r_vp = vp;
- rep->r_td = td;
- rep->r_procnum = procnum;
- mtx_init(&rep->r_mtx, "NFSrep lock", NULL, MTX_DEF);
-
- getmicrouptime(&now);
- rep->r_lastmsg = now.tv_sec -
- ((nmp->nm_tprintf_delay) - (nmp->nm_tprintf_initial_delay));
- mrest_len = m_length(mrest, NULL);
-
- /*
- * Get the RPC header with authorization.
- */
- auth_type = RPCAUTH_UNIX;
- if (cred->cr_ngroups < 1)
- panic("nfsreq nogrps");
- auth_len = ((((cred->cr_ngroups - 1) > nmp->nm_numgrps) ?
- nmp->nm_numgrps : (cred->cr_ngroups - 1)) << 2) +
- 5 * NFSX_UNSIGNED;
- m = nfsm_rpchead(cred, nmp->nm_flag, procnum, auth_type, auth_len,
- mrest, mrest_len, &mheadend, &xidp);
-
- /*
- * For stream protocols, insert a Sun RPC Record Mark.
- */
- if (nmp->nm_sotype == SOCK_STREAM) {
- M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
- *mtod(m, u_int32_t *) = htonl(0x80000000 |
- (m->m_pkthdr.len - NFSX_UNSIGNED));
- }
- rep->r_mreq = m;
- rep->r_xid = *xidp;
-tryagain:
- if (nmp->nm_flag & NFSMNT_SOFT)
- rep->r_retry = nmp->nm_retry;
- else
- rep->r_retry = NFS_MAXREXMIT + 1; /* past clip limit */
- rep->r_rtt = rep->r_rexmit = 0;
- if (nfs_rto_timer(procnum) != NFS_DEFAULT_TIMER)
- rep->r_flags = R_TIMING;
- else
- rep->r_flags = 0;
- rep->r_mrep = NULL;
-
- /*
- * Do the client side RPC.
- */
- nfsstats.rpcrequests++;
- /*
- * Chain request into list of outstanding requests. Be sure
- * to put it LAST so timer finds oldest requests first.
- */
- mtx_lock(&nfs_reqq_mtx);
- if (TAILQ_EMPTY(&nfs_reqq))
- callout_reset(&nfs_callout, nfs_ticks, nfs_timer, NULL);
- TAILQ_INSERT_TAIL(&nfs_reqq, rep, r_chain);
- mtx_unlock(&nfs_reqq_mtx);
-
- /*
- * If backing off another request or avoiding congestion, don't
- * send this one now but let timer do it. If not timing a request,
- * do it now.
- */
- mtx_lock(&nmp->nm_mtx);
- if (nmp->nm_so &&
- (((nmp->nm_sotype == SOCK_STREAM) && !(nmp->nm_nfstcpstate.flags & NFS_TCP_FORCE_RECONNECT)) ||
- (nmp->nm_flag & NFSMNT_DUMBTIMR) || nmp->nm_sent < nmp->nm_cwnd)) {
- if (nmp->nm_sotype == SOCK_STREAM)
- nmp->nm_nfstcpstate.sock_send_inprog++;
- mtx_unlock(&nmp->nm_mtx);
- m2 = m_copym(m, 0, M_COPYALL, M_WAIT);
- error = nfs_send(nmp->nm_so, nmp->nm_nam, m2, rep);
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- /*
- * nfs_timer() could've re-transmitted the request if we ended up
- * blocking on nfs_send() too long, so check for R_SENT here.
- */
- if (!error && (rep->r_flags & (R_SENT | R_MUSTRESEND)) == 0) {
- nmp->nm_sent += NFS_CWNDSCALE;
- rep->r_flags |= R_SENT;
- }
- mtx_unlock(&rep->r_mtx);
- if (nmp->nm_sotype == SOCK_STREAM)
- nfs_wakup_reconnectors(rep->r_nmp);
- mtx_unlock(&nmp->nm_mtx);
- } else {
- mtx_unlock(&nmp->nm_mtx);
- rep->r_rtt = -1;
- }
-
- /*
- * Wait for the reply from our send or the timer's.
- */
- if (!error || error == EPIPE)
- error = nfs_reply(rep);
-
- /*
- * nfs_timer() may be in the process of re-transmitting this request.
- * nfs_timer() drops the nfs_reqq_mtx before the pru_send() (to avoid LORs).
- * Wait till nfs_timer() completes the re-transmission. When the reply
- * comes back, it will be discarded (since the req struct for it no longer
- * exists).
- */
-wait_for_pinned_req:
- mtx_lock(&rep->r_mtx);
- while (rep->r_flags & R_PIN_REQ) {
- msleep((caddr_t)&rep->r_flags, &rep->r_mtx,
- (PZERO - 1), "nfsrxmt", 0);
- }
- mtx_unlock(&rep->r_mtx);
-
- mtx_lock(&nfs_reqq_mtx);
- /* Have to check for R_PIN_REQ after grabbing wlock again */
- mtx_lock(&rep->r_mtx);
- if (rep->r_flags & R_PIN_REQ) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nfs_reqq_mtx);
- goto wait_for_pinned_req;
- } else
- mtx_unlock(&rep->r_mtx);
- /* RPC done (timer not active, request not pinned), unlink the request */
- TAILQ_REMOVE(&nfs_reqq, rep, r_chain);
- if (TAILQ_EMPTY(&nfs_reqq))
- callout_stop(&nfs_callout);
- mtx_unlock(&nfs_reqq_mtx);
-
- /*
- * Decrement the outstanding request count.
- */
- mtx_lock(&rep->r_mtx);
- if (rep->r_flags & R_SENT) {
- rep->r_flags &= ~R_SENT; /* paranoia */
- mtx_unlock(&rep->r_mtx);
- mtx_lock(&nmp->nm_mtx);
- nmp->nm_sent -= NFS_CWNDSCALE;
- mtx_unlock(&nmp->nm_mtx);
- } else
- mtx_unlock(&rep->r_mtx);
-
- /*
- * If there was a successful reply and a tprintf msg.
- * tprintf a response.
- */
- if (!error) {
- nfs_up(rep, nmp, rep->r_td, "is alive again", NFSSTA_TIMEO);
- }
- mrep = rep->r_mrep;
- md = rep->r_md;
- dpos = rep->r_dpos;
- if (error) {
- /*
- * If we got interrupted by a signal in nfs_reply(), there's
- * a very small window where the reply could've come in before
- * this process got scheduled in. To handle that case, we need
- * to free the reply if it was delivered.
- */
- if (rep->r_mrep != NULL)
- m_freem(rep->r_mrep);
- m_freem(rep->r_mreq);
- mtx_destroy(&rep->r_mtx);
- free((caddr_t)rep, M_NFSREQ);
- return (error);
- }
-
- if (rep->r_mrep == NULL)
- panic("nfs_request: rep->r_mrep shouldn't be NULL if no error\n");
-
- /*
- * break down the rpc header and check if ok
- */
- tl = nfsm_dissect(u_int32_t *, 3 * NFSX_UNSIGNED);
- if (*tl++ == rpc_msgdenied) {
- if (*tl == rpc_mismatch)
- error = EOPNOTSUPP;
- else
- error = EACCES;
- m_freem(mrep);
- m_freem(rep->r_mreq);
- mtx_destroy(&rep->r_mtx);
- free((caddr_t)rep, M_NFSREQ);
- return (error);
- }
-
- /*
- * Just throw away any verifyer (ie: kerberos etc).
- */
- i = fxdr_unsigned(int, *tl++); /* verf type */
- i = fxdr_unsigned(int32_t, *tl); /* len */
- if (i > 0)
- nfsm_adv(nfsm_rndup(i));
- tl = nfsm_dissect(u_int32_t *, NFSX_UNSIGNED);
- /* 0 == ok */
- if (*tl == 0) {
- tl = nfsm_dissect(u_int32_t *, NFSX_UNSIGNED);
- if (*tl != 0) {
- error = fxdr_unsigned(int, *tl);
- if ((nmp->nm_flag & NFSMNT_NFSV3) &&
- error == NFSERR_TRYLATER) {
- m_freem(mrep);
- error = 0;
- waituntil = time_second + nfs3_jukebox_delay;
- while (time_second < waituntil) {
- (void) tsleep(&fake_wchan, PSOCK, "nqnfstry", hz);
- }
- rep->r_xid = *xidp = txdr_unsigned(nfs_xid_gen());
- goto tryagain;
- }
-
- /*
- * If the File Handle was stale, invalidate the
- * lookup cache, just in case.
- */
- if (error == ESTALE)
- nfs_purgecache(vp);
- /*
- * Skip wcc data on NFS errors for now. NetApp filers return corrupt
- * postop attrs in the wcc data for NFS err EROFS. Not sure if they
- * could return corrupt postop attrs for others errors.
- */
- if ((nmp->nm_flag & NFSMNT_NFSV3) && !nfs_skip_wcc_data_onerr) {
- *mrp = mrep;
- *mdp = md;
- *dposp = dpos;
- error |= NFSERR_RETERR;
- } else
- m_freem(mrep);
- m_freem(rep->r_mreq);
- mtx_destroy(&rep->r_mtx);
- free((caddr_t)rep, M_NFSREQ);
- return (error);
- }
-
- *mrp = mrep;
- *mdp = md;
- *dposp = dpos;
- m_freem(rep->r_mreq);
- mtx_destroy(&rep->r_mtx);
- free((caddr_t)rep, M_NFSREQ);
- return (0);
- }
- m_freem(mrep);
- error = EPROTONOSUPPORT;
-nfsmout:
- m_freem(rep->r_mreq);
- mtx_destroy(&rep->r_mtx);
- free((caddr_t)rep, M_NFSREQ);
- return (error);
-}
-
-/*
- * Nfs timer routine
- * Scan the nfsreq list and retranmit any requests that have timed out
- * To avoid retransmission attempts on STREAM sockets (in the future) make
- * sure to set the r_retry field to 0 (implies nm_retry == 0).
- *
- * The nfs reqq lock cannot be held while we do the pru_send() because of a
- * lock ordering violation. The NFS client socket callback acquires
- * inp_lock->nfsreq mutex and pru_send acquires inp_lock. So we drop the
- * reqq mutex (and reacquire it after the pru_send()). The req structure
- * (for the rexmit) is prevented from being removed by the R_PIN_REQ flag.
- */
-void
-nfs_timer(void *arg)
-{
- struct nfsreq *rep;
- struct mbuf *m;
- struct socket *so;
- struct nfsmount *nmp;
- int timeo;
- int error;
- struct timeval now;
-
- getmicrouptime(&now);
- mtx_lock(&nfs_reqq_mtx);
- TAILQ_FOREACH(rep, &nfs_reqq, r_chain) {
- nmp = rep->r_nmp;
- mtx_lock(&rep->r_mtx);
- if (rep->r_mrep || (rep->r_flags & R_SOFTTERM)) {
- mtx_unlock(&rep->r_mtx);
- continue;
- } else {
- /*
- * Terminate request if force-unmount in progress.
- * Note that NFS could have vfs_busy'ed the mount,
- * causing the unmount to wait and making this bit
- * of logic necessary.
- */
- if (rep->r_nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) {
- nfs_softterm(rep);
- mtx_unlock(&rep->r_mtx);
- continue;
- }
- mtx_unlock(&rep->r_mtx);
- }
- if (nfs_sigintr(nmp, rep, rep->r_td))
- continue;
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- if (nmp->nm_tprintf_initial_delay != 0 &&
- (rep->r_rexmit > 2 || (rep->r_flags & R_RESENDERR)) &&
- rep->r_lastmsg + nmp->nm_tprintf_delay < now.tv_sec) {
- rep->r_lastmsg = now.tv_sec;
- /*
- * Pin down the request and drop locks for the acquisition
- * of Giant from tprintf() in nfs_down().
- */
- rep->r_flags |= R_PIN_REQ;
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- mtx_unlock(&nfs_reqq_mtx);
- nfs_down(rep, nmp, rep->r_td, "not responding",
- 0, NFSSTA_TIMEO);
- mtx_lock(&nfs_reqq_mtx);
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- rep->r_flags &= ~R_PIN_REQ;
- wakeup((caddr_t)&rep->r_flags);
- }
- if (rep->r_rtt >= 0) {
- rep->r_rtt++;
- if (nmp->nm_flag & NFSMNT_DUMBTIMR)
- timeo = nmp->nm_timeo;
- else
- timeo = nfs_estimate_rto(nmp, rep->r_procnum);
- if (nmp->nm_timeouts > 0)
- timeo *= nfs_backoff[nmp->nm_timeouts - 1];
- if (rep->r_rtt <= timeo) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- continue;
- }
- if (nmp->nm_timeouts < NFS_NBACKOFF)
- nmp->nm_timeouts++;
- }
- if (rep->r_rexmit >= rep->r_retry) { /* too many */
- nfsstats.rpctimeouts++;
- nfs_softterm(rep);
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- continue;
- }
- if (nmp->nm_sotype != SOCK_DGRAM) {
- if (++rep->r_rexmit > NFS_MAXREXMIT)
- rep->r_rexmit = NFS_MAXREXMIT;
- /*
- * For NFS/TCP, setting R_MUSTRESEND and waking up
- * the requester will cause the request to be
- * retransmitted (in nfs_reply()), re-connecting
- * if necessary.
- */
- rep->r_flags |= R_MUSTRESEND;
- wakeup((caddr_t)rep);
- rep->r_rtt = 0;
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- continue;
- }
- if ((so = nmp->nm_so) == NULL) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- continue;
- }
- /*
- * If there is enough space and the window allows..
- * Resend it
- * Set r_rtt to -1 in case we fail to send it now.
- */
- rep->r_rtt = -1;
- if (sbspace(&so->so_snd) >= rep->r_mreq->m_pkthdr.len &&
- ((nmp->nm_flag & NFSMNT_DUMBTIMR) || (rep->r_flags & R_SENT) ||
- nmp->nm_sent < nmp->nm_cwnd)) {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- if ((m = m_copym(rep->r_mreq, 0, M_COPYALL, M_DONTWAIT))) {
- /*
- * Mark the request to indicate that a XMIT is in
- * progress to prevent the req structure being
- * removed in nfs_request().
- */
- mtx_lock(&rep->r_mtx);
- rep->r_flags |= R_PIN_REQ;
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nfs_reqq_mtx);
- if ((nmp->nm_flag & NFSMNT_NOCONN) == 0)
- error = (*so->so_proto->pr_usrreqs->pru_send)
- (so, 0, m, NULL, NULL, curthread);
- else
- error = (*so->so_proto->pr_usrreqs->pru_send)
- (so, 0, m, nmp->nm_nam, NULL,
- curthread);
- mtx_lock(&nfs_reqq_mtx);
- mtx_lock(&nmp->nm_mtx);
- mtx_lock(&rep->r_mtx);
- rep->r_flags &= ~R_PIN_REQ;
- wakeup((caddr_t)&rep->r_flags);
- if (error) {
- if (NFSIGNORE_SOERROR(nmp->nm_soflags, error))
- so->so_error = 0;
- rep->r_flags |= R_RESENDERR;
- } else {
- /*
- * Iff first send, start timing
- * else turn timing off, backoff timer
- * and divide congestion window by 2.
- */
- rep->r_flags &= ~R_RESENDERR;
- if (rep->r_flags & R_SENT) {
- rep->r_flags &= ~R_TIMING;
- if (++rep->r_rexmit > NFS_MAXREXMIT)
- rep->r_rexmit = NFS_MAXREXMIT;
- nmp->nm_cwnd >>= 1;
- if (nmp->nm_cwnd < NFS_CWNDSCALE)
- nmp->nm_cwnd = NFS_CWNDSCALE;
- nfsstats.rpcretries++;
- } else {
- rep->r_flags |= R_SENT;
- nmp->nm_sent += NFS_CWNDSCALE;
- }
- rep->r_rtt = 0;
- }
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- }
- } else {
- mtx_unlock(&rep->r_mtx);
- mtx_unlock(&nmp->nm_mtx);
- }
- }
- mtx_unlock(&nfs_reqq_mtx);
- callout_reset(&nfs_callout, nfs_ticks, nfs_timer, NULL);
-}
-
-/*
- * Mark all of an nfs mount's outstanding requests with R_SOFTTERM and
- * wait for all requests to complete. This is used by forced unmounts
- * to terminate any outstanding RPCs.
- */
-int
-nfs_nmcancelreqs(nmp)
- struct nfsmount *nmp;
-{
- struct nfsreq *req;
- int i;
-
- mtx_lock(&nfs_reqq_mtx);
- TAILQ_FOREACH(req, &nfs_reqq, r_chain) {
- mtx_lock(&req->r_mtx);
- if (nmp != req->r_nmp || req->r_mrep != NULL ||
- (req->r_flags & R_SOFTTERM)) {
- mtx_unlock(&req->r_mtx);
- continue;
- }
- nfs_softterm(req);
- mtx_unlock(&req->r_mtx);
- }
- mtx_unlock(&nfs_reqq_mtx);
-
- for (i = 0; i < 30; i++) {
- mtx_lock(&nfs_reqq_mtx);
- TAILQ_FOREACH(req, &nfs_reqq, r_chain) {
- if (nmp == req->r_nmp)
- break;
- }
- mtx_unlock(&nfs_reqq_mtx);
- if (req == NULL)
- return (0);
- tsleep(&fake_wchan, PSOCK, "nfscancel", hz);
- }
- return (EBUSY);
-}
-
-/*
- * Flag a request as being about to terminate (due to NFSMNT_INT/NFSMNT_SOFT).
- * The nm_send count is decremented now to avoid deadlocks when the process in
- * soreceive() hasn't yet managed to send its own request.
- */
-
-static void
-nfs_softterm(struct nfsreq *rep)
-{
- KASSERT(mtx_owned(&rep->r_mtx), ("NFS req lock not owned !"));
- rep->r_flags |= R_SOFTTERM;
- if (rep->r_flags & R_SENT) {
- rep->r_nmp->nm_sent -= NFS_CWNDSCALE;
- rep->r_flags &= ~R_SENT;
- }
- /*
- * Request terminated, wakeup the blocked process, so that we
- * can return EINTR back.
- */
- wakeup((caddr_t)rep);
-}
-
-/*
- * Any signal that can interrupt an NFS operation in an intr mount
- * should be added to this set. SIGSTOP and SIGKILL cannot be masked.
- */
-int nfs_sig_set[] = {
- SIGINT,
- SIGTERM,
- SIGHUP,
- SIGKILL,
- SIGSTOP,
- SIGQUIT
-};
-
-/*
- * Check to see if one of the signals in our subset is pending on
- * the process (in an intr mount).
- */
-static int
-nfs_sig_pending(sigset_t set)
-{
- int i;
-
- for (i = 0 ; i < sizeof(nfs_sig_set)/sizeof(int) ; i++)
- if (SIGISMEMBER(set, nfs_sig_set[i]))
- return (1);
- return (0);
-}
-
-/*
- * The set/restore sigmask functions are used to (temporarily) overwrite
- * the process p_sigmask during an RPC call (for example). These are also
- * used in other places in the NFS client that might tsleep().
- */
-void
-nfs_set_sigmask(struct thread *td, sigset_t *oldset)
-{
- sigset_t newset;
- int i;
- struct proc *p;
-
- SIGFILLSET(newset);
- if (td == NULL)
- td = curthread; /* XXX */
- p = td->td_proc;
- /* Remove the NFS set of signals from newset */
- PROC_LOCK(p);
- mtx_lock(&p->p_sigacts->ps_mtx);
- for (i = 0 ; i < sizeof(nfs_sig_set)/sizeof(int) ; i++) {
- /*
- * But make sure we leave the ones already masked
- * by the process, ie. remove the signal from the
- * temporary signalmask only if it wasn't already
- * in p_sigmask.
- */
- if (!SIGISMEMBER(td->td_sigmask, nfs_sig_set[i]) &&
- !SIGISMEMBER(p->p_sigacts->ps_sigignore, nfs_sig_set[i]))
- SIGDELSET(newset, nfs_sig_set[i]);
- }
- mtx_unlock(&p->p_sigacts->ps_mtx);
- PROC_UNLOCK(p);
- kern_sigprocmask(td, SIG_SETMASK, &newset, oldset, 0);
-}
-
-void
-nfs_restore_sigmask(struct thread *td, sigset_t *set)
-{
- if (td == NULL)
- td = curthread; /* XXX */
- kern_sigprocmask(td, SIG_SETMASK, set, NULL, 0);
-}
-
-/*
- * NFS wrapper to msleep(), that shoves a new p_sigmask and restores the
- * old one after msleep() returns.
- */
-int
-nfs_msleep(struct thread *td, void *ident, struct mtx *mtx, int priority, char *wmesg, int timo)
-{
- sigset_t oldset;
- int error;
- struct proc *p;
-
- if ((priority & PCATCH) == 0)
- return msleep(ident, mtx, priority, wmesg, timo);
- if (td == NULL)
- td = curthread; /* XXX */
- nfs_set_sigmask(td, &oldset);
- error = msleep(ident, mtx, priority, wmesg, timo);
- nfs_restore_sigmask(td, &oldset);
- p = td->td_proc;
- return (error);
-}
-
-/*
- * Test for a termination condition pending on the process.
- * This is used for NFSMNT_INT mounts.
- */
-int
-nfs_sigintr(struct nfsmount *nmp, struct nfsreq *rep, struct thread *td)
-{
- struct proc *p;
- sigset_t tmpset;
-
- if (rep) {
- mtx_lock(&rep->r_mtx);
- if (rep->r_flags & R_SOFTTERM) {
- mtx_unlock(&rep->r_mtx);
- return (EIO);
- } else
- mtx_unlock(&rep->r_mtx);
- }
- /* Terminate all requests while attempting a forced unmount. */
- if (nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF)
- return (EIO);
- if (!(nmp->nm_flag & NFSMNT_INT))
- return (0);
- if (td == NULL)
- return (0);
- p = td->td_proc;
- PROC_LOCK(p);
- tmpset = p->p_siglist;
- SIGSETOR(tmpset, td->td_siglist);
- SIGSETNAND(tmpset, td->td_sigmask);
- mtx_lock(&p->p_sigacts->ps_mtx);
- SIGSETNAND(tmpset, p->p_sigacts->ps_sigignore);
- mtx_unlock(&p->p_sigacts->ps_mtx);
- if ((SIGNOTEMPTY(p->p_siglist) || SIGNOTEMPTY(td->td_siglist))
- && nfs_sig_pending(tmpset)) {
- PROC_UNLOCK(p);
- return (EINTR);
- }
- PROC_UNLOCK(p);
- return (0);
-}
-
-/*
- * Lock a socket against others.
- * Necessary for STREAM sockets to ensure you get an entire rpc request/reply
- * and also to avoid race conditions between the processes with nfs requests
- * in progress when a reconnect is necessary.
- */
-int
-nfs_connect_lock(struct nfsreq *rep)
-{
- int *statep = &rep->r_nmp->nm_state;
- struct thread *td;
- int error, slpflag = 0, slptimeo = 0;
-
- td = rep->r_td;
- if (rep->r_nmp->nm_flag & NFSMNT_INT)
- slpflag = PCATCH;
- while (*statep & NFSSTA_SNDLOCK) {
- error = nfs_sigintr(rep->r_nmp, rep, td);
- if (error) {
- return (error);
- }
- *statep |= NFSSTA_WANTSND;
- (void) msleep(statep, &rep->r_nmp->nm_mtx,
- slpflag | (PZERO - 1), "nfsndlck", slptimeo);
- if (slpflag == PCATCH) {
- slpflag = 0;
- slptimeo = 2 * hz;
- }
- }
- *statep |= NFSSTA_SNDLOCK;
- return (0);
-}
-
-/*
- * Unlock the stream socket for others.
- */
-void
-nfs_connect_unlock(struct nfsreq *rep)
-{
- int *statep = &rep->r_nmp->nm_state;
-
- if ((*statep & NFSSTA_SNDLOCK) == 0)
- panic("nfs sndunlock");
- *statep &= ~NFSSTA_SNDLOCK;
- if (*statep & NFSSTA_WANTSND) {
- *statep &= ~NFSSTA_WANTSND;
- wakeup(statep);
- }
-}
-
-/*
- * nfs_realign:
- *
- * Check for badly aligned mbuf data and realign by copying the unaligned
- * portion of the data into a new mbuf chain and freeing the portions
- * of the old chain that were replaced.
- *
- * We cannot simply realign the data within the existing mbuf chain
- * because the underlying buffers may contain other rpc commands and
- * we cannot afford to overwrite them.
- *
- * We would prefer to avoid this situation entirely. The situation does
- * not occur with NFS/UDP and is supposed to only occassionally occur
- * with TCP. Use vfs.nfs.realign_count and realign_test to check this.
- *
- */
-static int
-nfs_realign(struct mbuf **pm, int hsiz)
-{
- struct mbuf *m;
- struct mbuf *n = NULL;
- int off = 0;
-
- ++nfs_realign_test;
- while ((m = *pm) != NULL) {
- if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
- MGET(n, M_DONTWAIT, MT_DATA);
- if (n == NULL)
- return (ENOMEM);
- if (m->m_len >= MINCLSIZE) {
- MCLGET(n, M_DONTWAIT);
- if (n->m_ext.ext_buf == NULL) {
- m_freem(n);
- return (ENOMEM);
- }
- }
- n->m_len = 0;
- break;
- }
- pm = &m->m_next;
- }
- /*
- * If n is non-NULL, loop on m copying data, then replace the
- * portion of the chain that had to be realigned.
- */
- if (n != NULL) {
- ++nfs_realign_count;
- while (m) {
- m_copyback(n, off, m->m_len, mtod(m, caddr_t));
- off += m->m_len;
- m = m->m_next;
- }
- m_freem(*pm);
- *pm = n;
- }
- return (0);
-}
-
-
-static int
-nfs_msg(struct thread *td, const char *server, const char *msg, int error)
-{
- struct proc *p;
-
- p = td ? td->td_proc : NULL;
- if (error) {
- tprintf(p, LOG_INFO, "nfs server %s: %s, error %d\n", server,
- msg, error);
- } else {
- tprintf(p, LOG_INFO, "nfs server %s: %s\n", server, msg);
- }
- return (0);
-}
-
-void
-nfs_down(rep, nmp, td, msg, error, flags)
- struct nfsreq *rep;
- struct nfsmount *nmp;
- struct thread *td;
- const char *msg;
- int error, flags;
-{
- if (nmp == NULL)
- return;
- mtx_lock(&nmp->nm_mtx);
- if ((flags & NFSSTA_TIMEO) && !(nmp->nm_state & NFSSTA_TIMEO)) {
- nmp->nm_state |= NFSSTA_TIMEO;
- mtx_unlock(&nmp->nm_mtx);
- vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
- VQ_NOTRESP, 0);
- } else
- mtx_unlock(&nmp->nm_mtx);
-#ifdef NFSSTA_LOCKTIMEO
- mtx_lock(&nmp->nm_mtx);
- if ((flags & NFSSTA_LOCKTIMEO) && !(nmp->nm_state & NFSSTA_LOCKTIMEO)) {
- nmp->nm_state |= NFSSTA_LOCKTIMEO;
- mtx_unlock(&nmp->nm_mtx);
- vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
- VQ_NOTRESPLOCK, 0);
- } else
- mtx_unlock(&nmp->nm_mtx);
-#endif
- if (rep != NULL) {
- mtx_lock(&rep->r_mtx);
- rep->r_flags |= R_TPRINTFMSG;
- mtx_unlock(&rep->r_mtx);
- }
- nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, error);
-}
-
-void
-nfs_up(rep, nmp, td, msg, flags)
- struct nfsreq *rep;
- struct nfsmount *nmp;
- struct thread *td;
- const char *msg;
- int flags;
-{
- if (nmp == NULL || rep == NULL)
- return;
- mtx_lock(&rep->r_mtx);
- if ((rep->r_flags & R_TPRINTFMSG) != 0) {
- mtx_unlock(&rep->r_mtx);
- nfs_msg(td, nmp->nm_mountp->mnt_stat.f_mntfromname, msg, 0);
- } else
- mtx_unlock(&rep->r_mtx);
-
- mtx_lock(&nmp->nm_mtx);
- if ((flags & NFSSTA_TIMEO) && (nmp->nm_state & NFSSTA_TIMEO)) {
- nmp->nm_state &= ~NFSSTA_TIMEO;
- mtx_unlock(&nmp->nm_mtx);
- vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
- VQ_NOTRESP, 1);
- } else
- mtx_unlock(&nmp->nm_mtx);
-
-#ifdef NFSSTA_LOCKTIMEO
- mtx_lock(&nmp->nm_mtx);
- if ((flags & NFSSTA_LOCKTIMEO) && (nmp->nm_state & NFSSTA_LOCKTIMEO)) {
- nmp->nm_state &= ~NFSSTA_LOCKTIMEO;
- mtx_unlock(&nmp->nm_mtx);
- vfs_event_signal(&nmp->nm_mountp->mnt_stat.f_fsid,
- VQ_NOTRESPLOCK, 1);
- } else
- mtx_unlock(&nmp->nm_mtx);
-#endif
-}
-
-#endif /* NFS_LEGACYRPC */
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