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- /*
- * Copyright (c) 1989 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 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.h 7.11 (Berkeley) 4/19/91
- */
-
- /*
- * Tunable constants for nfs
- */
-
- #define NFS_MAXIOVEC 34
- #define NFS_HZ 10 /* Ticks per second for NFS timeouts */
- #define NFS_TIMEO (1*NFS_HZ) /* Default timeout = 1 second */
- #define NFS_MINTIMEO (NFS_HZ) /* Min timeout to use */
- #define NFS_MAXTIMEO (60*NFS_HZ) /* Max timeout to backoff to */
- #define NFS_MINIDEMTIMEO (2*NFS_HZ) /* Min timeout for non-idempotent ops*/
- #define NFS_RELIABLETIMEO (5*NFS_HZ) /* Min timeout on reliable sockets */
- #define NFS_MAXREXMIT 100 /* Stop counting after this many */
- #define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */
- #define NFS_RETRANS 10 /* Num of retrans for soft mounts */
- #define NFS_FISHY 8 /* Host not responding at this count */
- #define NFS_ATTRTIMEO 5 /* Attribute cache timeout in sec */
- #define NFS_WSIZE 8192 /* Def. write data size <= 8192 */
- #define NFS_RSIZE 8192 /* Def. read data size <= 8192 */
- #define NFS_MAXREADDIR NFS_MAXDATA /* Max. size of directory read */
- #define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */
- #define NFS_DIRBLKSIZ 1024 /* Size of an NFS directory block */
- #define NMOD(a) ((a) % nfs_asyncdaemons)
-
- /*
- * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts.
- * What should be in this set is open to debate, but I believe that since
- * I/O system calls on ufs are never interrupted by signals the set should
- * be minimal. My reasoning is that many current programs that use signals
- * such as SIGALRM will not expect file I/O system calls to be interrupted
- * by them and break.
- */
- #define NFSINT_SIGMASK (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \
- sigmask(SIGHUP)|sigmask(SIGQUIT))
-
- /*
- * Socket errors ignored for connectionless sockets??
- * For now, ignore them all
- */
- #define NFSIGNORE_SOERROR(s, e) \
- ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \
- ((s) & PR_CONNREQUIRED) == 0)
-
- /*
- * Nfs outstanding request list element
- */
- struct nfsreq {
- struct nfsreq *r_next;
- struct nfsreq *r_prev;
- struct mbuf *r_mreq;
- struct mbuf *r_mrep;
- struct nfsmount *r_nmp;
- struct vnode *r_vp;
- u_long r_xid;
- short r_flags; /* flags on request, see below */
- short r_retry; /* max retransmission count */
- short r_rexmit; /* current retrans count */
- short r_timer; /* tick counter on reply */
- short r_timerinit; /* reinit tick counter on reply */
- struct proc *r_procp; /* Proc that did I/O system call */
- };
-
- /* Flag values for r_flags */
- #define R_TIMING 0x01 /* timing request (in mntp) */
- #define R_SENT 0x02 /* request has been sent */
- #define R_SOFTTERM 0x04 /* soft mnt, too many retries */
- #define R_INTR 0x08 /* intr mnt, signal pending */
- #define R_SOCKERR 0x10 /* Fatal error on socket */
- #define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */
- #define R_MUSTRESEND 0x40 /* Must resend request */
-
- #ifdef KERNEL
- /*
- * Silly rename structure that hangs off the nfsnode until the name
- * can be removed by nfs_inactive()
- */
- struct sillyrename {
- nfsv2fh_t s_fh;
- struct ucred *s_cred;
- struct vnode *s_dvp;
- u_short s_namlen;
- char s_name[20];
- };
-
- /* And its flag values */
- #define REMOVE 0
- #define RMDIR 1
- #endif /* KERNEL */
-
- /*
- * Stats structure
- */
- struct nfsstats {
- int attrcache_hits;
- int attrcache_misses;
- int lookupcache_hits;
- int lookupcache_misses;
- int direofcache_hits;
- int direofcache_misses;
- int biocache_reads;
- int read_bios;
- int read_physios;
- int biocache_writes;
- int write_bios;
- int write_physios;
- int biocache_readlinks;
- int readlink_bios;
- int biocache_readdirs;
- int readdir_bios;
- int rpccnt[NFS_NPROCS];
- int rpcretries;
- int srvrpccnt[NFS_NPROCS];
- int srvrpc_errs;
- int srv_errs;
- int rpcrequests;
- int rpctimeouts;
- int rpcunexpected;
- int rpcinvalid;
- int srvcache_inproghits;
- int srvcache_idemdonehits;
- int srvcache_nonidemdonehits;
- int srvcache_misses;
- };
-
- #ifdef KERNEL
- struct nfsstats nfsstats;
- #endif /* KERNEL */
-