nfsrvstats.h revision 1541
1/* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)nfs.h 8.1 (Berkeley) 6/10/93 37 */ 38 39/* 40 * Tunable constants for nfs 41 */ 42 43#define NFS_MAXIOVEC 34 44#define NFS_HZ 25 /* Ticks per second for NFS timeouts */ 45#define NFS_TIMEO (1*NFS_HZ) /* Default timeout = 1 second */ 46#define NFS_MINTIMEO (1*NFS_HZ) /* Min timeout to use */ 47#define NFS_MAXTIMEO (60*NFS_HZ) /* Max timeout to backoff to */ 48#define NFS_MINIDEMTIMEO (5*NFS_HZ) /* Min timeout for non-idempotent ops*/ 49#define NFS_MAXREXMIT 100 /* Stop counting after this many */ 50#define NFS_MAXWINDOW 1024 /* Max number of outstanding requests */ 51#define NFS_RETRANS 10 /* Num of retrans for soft mounts */ 52#define NFS_MAXGRPS 16 /* Max. size of groups list */ 53#define NFS_MINATTRTIMO 5 /* Attribute cache timeout in sec */ 54#define NFS_MAXATTRTIMO 60 55#define NFS_WSIZE 8192 /* Def. write data size <= 8192 */ 56#define NFS_RSIZE 8192 /* Def. read data size <= 8192 */ 57#define NFS_DEFRAHEAD 1 /* Def. read ahead # blocks */ 58#define NFS_MAXRAHEAD 4 /* Max. read ahead # blocks */ 59#define NFS_MAXREADDIR NFS_MAXDATA /* Max. size of directory read */ 60#define NFS_MAXUIDHASH 64 /* Max. # of hashed uid entries/mp */ 61#define NFS_MAXASYNCDAEMON 20 /* Max. number async_daemons runable */ 62#define NFS_DIRBLKSIZ 1024 /* Size of an NFS directory block */ 63#define NMOD(a) ((a) % nfs_asyncdaemons) 64 65/* 66 * Set the attribute timeout based on how recently the file has been modified. 67 */ 68#define NFS_ATTRTIMEO(np) \ 69 ((((np)->n_flag & NMODIFIED) || \ 70 (time.tv_sec - (np)->n_mtime) / 10 < NFS_MINATTRTIMO) ? NFS_MINATTRTIMO : \ 71 ((time.tv_sec - (np)->n_mtime) / 10 > NFS_MAXATTRTIMO ? NFS_MAXATTRTIMO : \ 72 (time.tv_sec - (np)->n_mtime) / 10)) 73 74/* 75 * Structures for the nfssvc(2) syscall. Not that anyone but nfsd and mount_nfs 76 * should ever try and use it. 77 */ 78struct nfsd_args { 79 int sock; /* Socket to serve */ 80 caddr_t name; /* Client address for connection based sockets */ 81 int namelen; /* Length of name */ 82}; 83 84struct nfsd_srvargs { 85 struct nfsd *nsd_nfsd; /* Pointer to in kernel nfsd struct */ 86 uid_t nsd_uid; /* Effective uid mapped to cred */ 87 u_long nsd_haddr; /* Ip address of client */ 88 struct ucred nsd_cr; /* Cred. uid maps to */ 89 int nsd_authlen; /* Length of auth string (ret) */ 90 char *nsd_authstr; /* Auth string (ret) */ 91}; 92 93struct nfsd_cargs { 94 char *ncd_dirp; /* Mount dir path */ 95 uid_t ncd_authuid; /* Effective uid */ 96 int ncd_authtype; /* Type of authenticator */ 97 int ncd_authlen; /* Length of authenticator string */ 98 char *ncd_authstr; /* Authenticator string */ 99}; 100 101/* 102 * Stats structure 103 */ 104struct nfsstats { 105 int attrcache_hits; 106 int attrcache_misses; 107 int lookupcache_hits; 108 int lookupcache_misses; 109 int direofcache_hits; 110 int direofcache_misses; 111 int biocache_reads; 112 int read_bios; 113 int read_physios; 114 int biocache_writes; 115 int write_bios; 116 int write_physios; 117 int biocache_readlinks; 118 int readlink_bios; 119 int biocache_readdirs; 120 int readdir_bios; 121 int rpccnt[NFS_NPROCS]; 122 int rpcretries; 123 int srvrpccnt[NFS_NPROCS]; 124 int srvrpc_errs; 125 int srv_errs; 126 int rpcrequests; 127 int rpctimeouts; 128 int rpcunexpected; 129 int rpcinvalid; 130 int srvcache_inproghits; 131 int srvcache_idemdonehits; 132 int srvcache_nonidemdonehits; 133 int srvcache_misses; 134 int srvnqnfs_leases; 135 int srvnqnfs_maxleases; 136 int srvnqnfs_getleases; 137}; 138 139/* 140 * Flags for nfssvc() system call. 141 */ 142#define NFSSVC_BIOD 0x002 143#define NFSSVC_NFSD 0x004 144#define NFSSVC_ADDSOCK 0x008 145#define NFSSVC_AUTHIN 0x010 146#define NFSSVC_GOTAUTH 0x040 147#define NFSSVC_AUTHINFAIL 0x080 148#define NFSSVC_MNTD 0x100 149 150/* 151 * The set of signals the interrupt an I/O in progress for NFSMNT_INT mounts. 152 * What should be in this set is open to debate, but I believe that since 153 * I/O system calls on ufs are never interrupted by signals the set should 154 * be minimal. My reasoning is that many current programs that use signals 155 * such as SIGALRM will not expect file I/O system calls to be interrupted 156 * by them and break. 157 */ 158#ifdef KERNEL 159#define NFSINT_SIGMASK (sigmask(SIGINT)|sigmask(SIGTERM)|sigmask(SIGKILL)| \ 160 sigmask(SIGHUP)|sigmask(SIGQUIT)) 161 162/* 163 * Socket errors ignored for connectionless sockets?? 164 * For now, ignore them all 165 */ 166#define NFSIGNORE_SOERROR(s, e) \ 167 ((e) != EINTR && (e) != ERESTART && (e) != EWOULDBLOCK && \ 168 ((s) & PR_CONNREQUIRED) == 0) 169 170/* 171 * Nfs outstanding request list element 172 */ 173struct nfsreq { 174 struct nfsreq *r_next; 175 struct nfsreq *r_prev; 176 struct mbuf *r_mreq; 177 struct mbuf *r_mrep; 178 struct mbuf *r_md; 179 caddr_t r_dpos; 180 struct nfsmount *r_nmp; 181 struct vnode *r_vp; 182 u_long r_xid; 183 int r_flags; /* flags on request, see below */ 184 int r_retry; /* max retransmission count */ 185 int r_rexmit; /* current retrans count */ 186 int r_timer; /* tick counter on reply */ 187 int r_procnum; /* NFS procedure number */ 188 int r_rtt; /* RTT for rpc */ 189 struct proc *r_procp; /* Proc that did I/O system call */ 190}; 191 192/* Flag values for r_flags */ 193#define R_TIMING 0x01 /* timing request (in mntp) */ 194#define R_SENT 0x02 /* request has been sent */ 195#define R_SOFTTERM 0x04 /* soft mnt, too many retries */ 196#define R_INTR 0x08 /* intr mnt, signal pending */ 197#define R_SOCKERR 0x10 /* Fatal error on socket */ 198#define R_TPRINTFMSG 0x20 /* Did a tprintf msg. */ 199#define R_MUSTRESEND 0x40 /* Must resend request */ 200#define R_GETONEREP 0x80 /* Probe for one reply only */ 201 202struct nfsstats nfsstats; 203 204/* 205 * A list of nfssvc_sock structures is maintained with all the sockets 206 * that require service by the nfsd. 207 * The nfsuid structs hang off of the nfssvc_sock structs in both lru 208 * and uid hash lists. 209 */ 210#define NUIDHASHSIZ 32 211#define NUIDHASH(uid) ((uid) & (NUIDHASHSIZ - 1)) 212 213/* 214 * Network address hash list element 215 */ 216union nethostaddr { 217 u_long had_inetaddr; 218 struct mbuf *had_nam; 219}; 220 221struct nfsuid { 222 struct nfsuid *nu_lrunext; /* MUST be first */ 223 struct nfsuid *nu_lruprev; 224 struct nfsuid *nu_hnext; 225 struct nfsuid *nu_hprev; 226 int nu_flag; /* Flags */ 227 uid_t nu_uid; /* Uid mapped by this entry */ 228 union nethostaddr nu_haddr; /* Host addr. for dgram sockets */ 229 struct ucred nu_cr; /* Cred uid mapped to */ 230}; 231 232#define nu_inetaddr nu_haddr.had_inetaddr 233#define nu_nam nu_haddr.had_nam 234/* Bits for nu_flag */ 235#define NU_INETADDR 0x1 236 237struct nfssvc_sock { 238 struct nfsuid *ns_lrunext; /* MUST be first */ 239 struct nfsuid *ns_lruprev; 240 struct nfssvc_sock *ns_next; 241 struct nfssvc_sock *ns_prev; 242 int ns_flag; 243 u_long ns_sref; 244 struct file *ns_fp; 245 struct socket *ns_so; 246 int ns_solock; 247 struct mbuf *ns_nam; 248 int ns_cc; 249 struct mbuf *ns_raw; 250 struct mbuf *ns_rawend; 251 int ns_reclen; 252 struct mbuf *ns_rec; 253 struct mbuf *ns_recend; 254 int ns_numuids; 255 struct nfsuid *ns_uidh[NUIDHASHSIZ]; 256}; 257 258/* Bits for "ns_flag" */ 259#define SLP_VALID 0x01 260#define SLP_DOREC 0x02 261#define SLP_NEEDQ 0x04 262#define SLP_DISCONN 0x08 263#define SLP_GETSTREAM 0x10 264#define SLP_INIT 0x20 265#define SLP_WANTINIT 0x40 266 267#define SLP_ALLFLAGS 0xff 268 269/* 270 * One of these structures is allocated for each nfsd. 271 */ 272struct nfsd { 273 struct nfsd *nd_next; /* Must be first */ 274 struct nfsd *nd_prev; 275 int nd_flag; /* NFSD_ flags */ 276 struct nfssvc_sock *nd_slp; /* Current socket */ 277 struct mbuf *nd_nam; /* Client addr for datagram req. */ 278 struct mbuf *nd_mrep; /* Req. mbuf list */ 279 struct mbuf *nd_md; 280 caddr_t nd_dpos; /* Position in list */ 281 int nd_procnum; /* RPC procedure number */ 282 u_long nd_retxid; /* RPC xid */ 283 int nd_repstat; /* Reply status value */ 284 struct ucred nd_cr; /* Credentials for req. */ 285 int nd_nqlflag; /* Leasing flag */ 286 int nd_duration; /* Lease duration */ 287 int nd_authlen; /* Authenticator len */ 288 u_char nd_authstr[RPCAUTH_MAXSIZ]; /* Authenticator data */ 289 struct proc *nd_procp; /* Proc ptr */ 290}; 291 292#define NFSD_WAITING 0x01 293#define NFSD_CHECKSLP 0x02 294#define NFSD_REQINPROG 0x04 295#define NFSD_NEEDAUTH 0x08 296#define NFSD_AUTHFAIL 0x10 297#endif /* KERNEL */ 298