network - Tokenize NFS, fix MP races
[dragonfly.git] / sys / vfs / nfs / nfsmount.h
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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 * @(#)nfsmount.h 8.3 (Berkeley) 3/30/95
37 * $FreeBSD: src/sys/nfs/nfsmount.h,v 1.17 1999/12/29 04:54:54 peter Exp $
1c843a13 38 * $DragonFly: src/sys/vfs/nfs/nfsmount.h,v 1.8 2006/04/07 06:38:33 dillon Exp $
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39 */
40
41
42#ifndef _NFS_NFSMOUNT_H_
43#define _NFS_NFSMOUNT_H_
44
8684e6f9 45#include <sys/mutex.h>
c6b43e93 46#include <sys/thread.h> /* token */
8684e6f9 47
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48enum nfssvc_state {
49 NFSSVC_INIT,
50 NFSSVC_WAITING,
51 NFSSVC_PENDING,
52 NFSSVC_STOPPING,
53 NFSSVC_DONE
54};
55
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56/*
57 * Mount structure.
58 * One allocated on every NFS mount.
59 * Holds NFS specific information for mount.
60 */
61struct nfsmount {
62 int nm_flag; /* Flags for soft/hard... */
63 int nm_state; /* Internal state flags */
e21aec5b 64 TAILQ_ENTRY(nfsmount) nm_entry; /* entry in nfsmountq */
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65 struct mtx nm_rxlock; /* receive socket lock */
66 struct mtx nm_txlock; /* send socket lock */
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67 thread_t nm_rxthread;
68 thread_t nm_txthread;
69 enum nfssvc_state nm_rxstate;
70 enum nfssvc_state nm_txstate;
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71 struct mount *nm_mountp; /* Vfs structure for this filesystem */
72 int nm_numgrps; /* Max. size of groupslist */
73 u_char nm_fh[NFSX_V3FHMAX]; /* File handle of root dir */
74 int nm_fhsize; /* Size of root file handle */
75 struct socket *nm_so; /* Rpc socket */
76 int nm_sotype; /* Type of socket */
77 int nm_soproto; /* and protocol */
78 int nm_soflags; /* pr_flags for socket protocol */
79 struct sockaddr *nm_nam; /* Addr of server */
80 int nm_timeo; /* Init timer for NFSMNT_DUMBTIMR */
81 int nm_retry; /* Max retries */
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82 int nm_srtt[6]; /* Timers for rpcs (see proct[]) */
83 int nm_sdrtt[6];
f8565b0f 84 int nm_maxasync_scaled; /* Used to control congestion */
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85 int nm_timeouts; /* Request timeouts */
86 int nm_deadthresh; /* Threshold of timeouts-->dead server*/
cc7d050e 87 u_int32_t nm_lastreprocnum; /* Last resent procnum for dup detect */
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88 int nm_rsize; /* Max size of read rpc */
89 int nm_wsize; /* Max size of write rpc */
90 int nm_readdirsize; /* Size of a readdir rpc */
91 int nm_readahead; /* Num. of blocks to readahead */
e07fef60 92 int nm_unused01; /* Term (sec) for NQNFS lease */
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93 int nm_acdirmin; /* Directory attr cache min lifetime */
94 int nm_acdirmax; /* Directory attr cache max lifetime */
95 int nm_acregmin; /* Reg file attr cache min lifetime */
96 int nm_acregmax; /* Reg file attr cache max lifetime */
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97 uid_t nm_authuid; /* Uid for authenticator */
98 int nm_authtype; /* Authenticator type */
99 int nm_authlen; /* and length */
100 char *nm_authstr; /* Authenticator string */
101 char *nm_verfstr; /* and the verifier */
102 int nm_verflen;
103 u_char nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
104 NFSKERBKEY_T nm_key; /* and the session key */
105 int nm_numuids; /* Number of nfsuid mappings */
106 TAILQ_HEAD(, nfsuid) nm_uidlruhead; /* Lists of nfsuid mappings */
107 LIST_HEAD(, nfsuid) nm_uidhashtbl[NFS_MUIDHASHSIZ];
81b5c339 108 TAILQ_HEAD(, bio) nm_bioq; /* async io buffer queue */
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109 TAILQ_HEAD(, nfsreq) nm_reqtxq; /* nfsreq queue - tx processing */
110 TAILQ_HEAD(, nfsreq) nm_reqrxq; /* nfsreq queue - rx processing */
111 TAILQ_HEAD(, nfsreq) nm_reqq; /* nfsreq queue - pending */
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112 int nm_bioqlen; /* number of buffers in queue */
113 int nm_reqqlen; /* number of nfsreqs in queue */
984263bc 114 u_int64_t nm_maxfilesize; /* maximum file size */
3b568787 115 struct ucred *nm_cred; /* 'root' credential */
c6b43e93 116 struct lwkt_token nm_token; /* protective token */
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117};
118
3b568787 119
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120#if defined(_KERNEL)
121/*
122 * Convert mount ptr to nfsmount ptr.
123 */
124#define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data))
3b568787 125extern void nfs_free_mount(struct nfsmount *nmp);
1c843a13 126extern void nfs_setvtype(struct vnode *, enum vtype);
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127
128#endif
129
130#endif