/* $OpenBSD: nfs.h,v 1.54 2024/05/04 10:53:37 jsg Exp $ */ /* $NetBSD: nfs.h,v 1.10.4.1 1996/05/27 11:23:56 fvdl Exp $ */ /* * Copyright (c) 1989, 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. * 3. 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 8.4 (Berkeley) 5/1/95 */ #ifndef _NFS_NFS_H_ #define _NFS_NFS_H_ #define NFS_TICKINTVL 5 /* Desired time for a tick (msec) */ #define NFS_HZ (hz / nfs_ticks) /* Ticks/sec */ #define NFS_TIMEO (1 * NFS_HZ) /* Default timeout = 1 second */ #define NFS_MINTIMEO (1 * NFS_HZ) /* Min timeout to use */ #define NFS_MAXTIMEO (60 * NFS_HZ) /* Max timeout to backoff to */ #define NFS_TIMEOUTMUL 2 /* Timeout/Delay multiplier */ #define NFS_MAXREXMIT 100 /* Stop counting after this many */ #define NFS_RETRANS 10 /* Num of retrans for soft mounts */ #define NFS_MAXGRPS 16 /* Max. size of groups list */ #define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ #define NFS_MAXATTRTIMO 60 #define NFS_WSIZE 8192 /* Def. write data size <= 8192 */ #define NFS_RSIZE 8192 /* Def. read data size <= 8192 */ #define NFS_READDIRSIZE 8192 /* Def. readdir size */ #define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */ #define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ #define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ /* * Ideally, NFS_DIRBLKSIZ should be bigger, but I've seen servers with * broken NFS/ethernet drivers that won't work with anything bigger (Linux..) */ #define NFS_DIRBLKSIZ 1024 /* Must be a multiple of DIRBLKSIZ */ #define NFS_READDIRBLKSIZ 512 /* Size of read dir blocks. XXX */ /* * Oddballs */ #define NFS_CMPFH(n, f, s) \ ((n)->n_fhsize == (s) && !bcmp((caddr_t)(n)->n_fhp, (caddr_t)(f), (s))) #define NFS_ISV3(v) (VFSTONFS((v)->v_mount)->nm_flag & NFSMNT_NFSV3) #define NFS_SRVMAXDATA(n) \ (((n)->nd_flag & ND_NFSV3) ? (((n)->nd_nam2) ? \ NFS_MAXDGRAMDATA : NFS_MAXDATA) : NFS_V2MAXDATA) /* * The B_INVAFTERWRITE flag should be set to whatever is required by the * buffer cache code to say "Invalidate the block after it is written back". */ #define B_INVAFTERWRITE B_INVAL /* * Structures for the nfssvc(2) syscall. * Not that anyone besides nfsd(8) should ever use it. */ struct nfsd_args { int sock; /* Socket to serve */ caddr_t name; /* Client addr for connection based sockets */ int namelen; /* Length of name */ }; struct nfsd_srvargs { struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ uid_t nsd_uid; /* Effective uid mapped to cred */ u_int32_t nsd_haddr; /* IP address of client */ struct xucred nsd_cr; /* Cred. uid maps to */ int nsd_authlen; /* Length of auth string (ret) */ u_char *nsd_authstr; /* Auth string (ret) */ int nsd_verflen; /* and the verifier */ u_char *nsd_verfstr; struct timeval nsd_timestamp; /* timestamp from verifier */ u_int32_t nsd_ttl; /* credential ttl (sec) */ }; /* * Stats structure */ struct nfsstats { uint64_t attrcache_hits; uint64_t attrcache_misses; uint64_t lookupcache_hits; uint64_t lookupcache_misses; uint64_t direofcache_hits; uint64_t direofcache_misses; uint64_t biocache_reads; uint64_t read_bios; uint64_t read_physios; uint64_t biocache_writes; uint64_t write_bios; uint64_t write_physios; uint64_t biocache_readlinks; uint64_t readlink_bios; uint64_t biocache_readdirs; uint64_t readdir_bios; uint64_t rpccnt[NFS_NPROCS]; uint64_t rpcretries; uint64_t srvrpccnt[NFS_NPROCS]; uint64_t srvrpc_errs; uint64_t srv_errs; uint64_t rpcrequests; uint64_t rpctimeouts; uint64_t rpcunexpected; uint64_t rpcinvalid; uint64_t srvcache_inproghits; uint64_t srvcache_idemdonehits; uint64_t srvcache_nonidemdonehits; uint64_t srvcache_misses; uint64_t forcedsync; uint64_t srvnqnfs_leases; uint64_t srvnqnfs_maxleases; uint64_t srvnqnfs_getleases; uint64_t srvvop_writes; }; /* * Flags for nfssvc() system call. */ #define NFSSVC_NFSD 0x004 #define NFSSVC_ADDSOCK 0x008 /* * fs.nfs sysctl(3) identifiers */ #define NFS_NFSSTATS 1 /* struct: struct nfsstats */ #define NFS_NIOTHREADS 2 /* number of i/o threads */ #define NFS_MAXID 3 #define FS_NFS_NAMES { \ { 0, 0 }, \ { "nfsstats", CTLTYPE_STRUCT }, \ { "iothreads", CTLTYPE_INT } \ } /* * 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. */ #ifdef _KERNEL extern int nfs_niothreads; struct uio; struct buf; struct vattr; struct nameidata; /* XXX */ #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 { TAILQ_ENTRY(nfsreq) r_chain; struct mbuf *r_mreq; struct mbuf *r_mrep; struct mbuf *r_md; caddr_t r_dpos; struct nfsmount *r_nmp; struct vnode *r_vp; u_int32_t r_xid; int r_flags; /* flags on request, see below */ int r_rexmit; /* current retrans count */ int r_timer; /* tick counter on reply */ int r_procnum; /* NFS procedure number */ int r_rtt; /* RTT for rpc */ 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 */ /* * On fast networks, the estimator will try to reduce the * timeout lower than the latency of the server's disks, * which results in too many timeouts, so cap the lower * bound. */ #define NFS_MINRTO (NFS_HZ >> 2) /* * Keep the RTO from increasing to unreasonably large values * when a server is not responding. */ #define NFS_MAXRTO (20 * NFS_HZ) enum nfs_rto_timers { NFS_DEFAULT_TIMER, NFS_GETATTR_TIMER, NFS_LOOKUP_TIMER, NFS_READ_TIMER, NFS_WRITE_TIMER, }; #define NFS_MAX_TIMER (NFS_WRITE_TIMER) #define NFS_INITRTT (NFS_HZ << 3) /* * Network address hash list element */ union nethostaddr { u_int32_t had_inetaddr; struct mbuf *had_nam; }; struct nfssvc_sock { TAILQ_ENTRY(nfssvc_sock) ns_chain; /* List of all nfssvc_sock's */ struct file *ns_fp; /* fp from the... */ struct socket *ns_so; /* ...socket this struct wraps */ struct mbuf *ns_nam; /* MT_SONAME of client */ struct mbuf *ns_raw; /* head of unpeeked mbufs */ struct mbuf *ns_rawend; /* tail of unpeeked mbufs */ struct mbuf *ns_rec; /* queued RPC records */ struct mbuf *ns_recend; /* last queued RPC record */ struct mbuf *ns_frag; /* end of record fragment */ int ns_flag; /* socket status flags */ int ns_solock; /* lock for connected socket */ int ns_cc; /* actual chars queued */ int ns_reclen; /* length of first queued record */ u_int32_t ns_sref; /* # of refs to this struct */ }; /* Bits for "ns_flag" */ #define SLP_VALID 0x01 /* connection is usable */ #define SLP_DOREC 0x02 /* receive operation required */ #define SLP_NEEDQ 0x04 /* connection has data to queue from socket */ #define SLP_DISCONN 0x08 /* connection is closed */ #define SLP_GETSTREAM 0x10 /* extracting RPC from TCP connection */ #define SLP_LASTFRAG 0x20 /* last fragment received on TCP connection */ #define SLP_ALLFLAGS 0xff /* convenience */ /* * One of these structures is allocated for each nfsd. */ struct nfsd { TAILQ_ENTRY(nfsd) nfsd_chain; /* List of all nfsd's */ int nfsd_flag; /* NFSD_ flags */ struct nfssvc_sock *nfsd_slp; /* Current socket */ struct proc *nfsd_procp; /* Proc ptr */ struct nfsrv_descript *nfsd_nd; /* Associated nfsrv_descript */ }; /* Bits for "nfsd_flag" */ #define NFSD_WAITING 0x01 #define NFSD_REQINPROG 0x02 /* * This structure is used by the server for describing each request. */ struct nfsrv_descript { struct mbuf *nd_mrep; /* Request mbuf list */ struct mbuf *nd_md; /* Current dissect mbuf */ struct mbuf *nd_nam; /* and socket addr */ struct mbuf *nd_nam2; /* return socket addr */ caddr_t nd_dpos; /* Current dissect pos */ unsigned int nd_procnum; /* RPC # */ int nd_flag; /* nd_flag */ int nd_repstat; /* Reply status */ u_int32_t nd_retxid; /* Reply xid */ struct ucred nd_cr; /* Credentials */ }; /* Bits for "nd_flag" */ #define ND_NFSV3 0x08 extern struct pool nfsreqpl; extern struct pool nfs_node_pool; extern TAILQ_HEAD(nfsdhead, nfsd) nfsd_head; extern int nfsd_head_flag; #define NFSD_CHECKSLP 0x01 #endif /* _KERNEL */ #endif /* _NFS_NFS_H */
