xref: /freebsd/sys/nfsclient/nfsmount.h (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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  * 4. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  *	@(#)nfsmount.h	8.3 (Berkeley) 3/30/95
33  * $FreeBSD$
34  */
35 
36 #ifndef _NFSCLIENT_NFSMOUNT_H_
37 #define _NFSCLIENT_NFSMOUNT_H_
38 
39 struct nfs_tcp_mountstate {
40  	int rpcresid;
41 #define NFS_TCP_EXPECT_RPCMARKER 	0x0001 /* Expect to see a RPC/TCP marker next */
42 #define NFS_TCP_FORCE_RECONNECT 	0x0002 /* Force a TCP reconnect */
43 #define NFS_TCP_WAIT_WRITE_DRAIN 	0x0004 /* Waiting for socket writers to finish */
44  	int flags;
45 	int sock_send_inprog;
46 };
47 
48 /*
49  * Mount structure.
50  * One allocated on every NFS mount.
51  * Holds NFS specific information for mount.
52  */
53 struct	nfsmount {
54 	struct mtx	nm_mtx;
55 	int	nm_flag;		/* Flags for soft/hard... */
56 	int	nm_state;		/* Internal state flags */
57 	struct	mount *nm_mountp;	/* Vfs structure for this filesystem */
58 	int	nm_numgrps;		/* Max. size of groupslist */
59 	u_char	nm_fh[NFSX_V4FH];	/* File handle of root dir */
60 	int	nm_fhsize;		/* Size of root file handle */
61 	struct	rpcclnt nm_rpcclnt;	/* rpc state */
62 	struct	socket *nm_so;		/* Rpc socket */
63 	int	nm_sotype;		/* Type of socket */
64 	int	nm_soproto;		/* and protocol */
65 	int	nm_soflags;		/* pr_flags for socket protocol */
66 	struct	sockaddr *nm_nam;	/* Addr of server */
67 	int	nm_timeo;		/* Init timer for NFSMNT_DUMBTIMR */
68 	int	nm_retry;		/* Max retries */
69 	int	nm_srtt[NFS_MAX_TIMER],	/* RTT Timers for rpcs */
70 		nm_sdrtt[NFS_MAX_TIMER];
71 	int	nm_sent;		/* Request send count */
72 	int	nm_cwnd;		/* Request send window */
73 	int	nm_timeouts;		/* Request timeouts */
74 	int	nm_deadthresh;		/* Threshold of timeouts-->dead server*/
75 	int	nm_rsize;		/* Max size of read rpc */
76 	int	nm_wsize;		/* Max size of write rpc */
77 	int	nm_readdirsize;		/* Size of a readdir rpc */
78 	int	nm_readahead;		/* Num. of blocks to readahead */
79 	int	nm_wcommitsize;		/* Max size of commit for write */
80 	int	nm_acdirmin;		/* Directory attr cache min lifetime */
81 	int	nm_acdirmax;		/* Directory attr cache max lifetime */
82 	int	nm_acregmin;		/* Reg file attr cache min lifetime */
83 	int	nm_acregmax;		/* Reg file attr cache max lifetime */
84 	u_char	nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
85 	TAILQ_HEAD(, buf) nm_bufq;	/* async io buffer queue */
86 	short	nm_bufqlen;		/* number of buffers in queue */
87 	short	nm_bufqwant;		/* process wants to add to the queue */
88 	int	nm_bufqiods;		/* number of iods processing queue */
89 	u_int64_t nm_maxfilesize;	/* maximum file size */
90 	struct nfs_rpcops *nm_rpcops;
91 	int	nm_tprintf_initial_delay;	/* initial delay */
92 	int	nm_tprintf_delay;		/* interval for messages */
93 	struct nfs_tcp_mountstate nm_nfstcpstate;
94 
95 	/* NFSv4 */
96 	uint64_t nm_clientid;
97 	fsid_t	nm_fsid;
98 	u_int	nm_lease_time;
99 	time_t	nm_last_renewal;
100 };
101 
102 #if defined(_KERNEL)
103 /*
104  * Convert mount ptr to nfsmount ptr.
105  */
106 #define VFSTONFS(mp)	((struct nfsmount *)((mp)->mnt_data))
107 
108 #ifndef NFS_TPRINTF_INITIAL_DELAY
109 #define NFS_TPRINTF_INITIAL_DELAY       12
110 #endif
111 
112 #ifndef NFS_TPRINTF_DELAY
113 #define NFS_TPRINTF_DELAY               30
114 #endif
115 
116 #endif
117 
118 #endif
119