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Annotation of 43BSDReno/sys/nfs/nfsmount.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1989 The Regents of the University of California.
                      3:  * 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 is only permitted until one year after the first shipment
                      9:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                     10:  * binary forms are permitted provided that: (1) source distributions retain
                     11:  * this entire copyright notice and comment, and (2) distributions including
                     12:  * binaries display the following acknowledgement:  This product includes
                     13:  * software developed by the University of California, Berkeley and its
                     14:  * contributors'' in the documentation or other materials provided with the
                     15:  * distribution and in all advertising materials mentioning features or use
                     16:  * of this software.  Neither the name of the University nor the names of
                     17:  * its contributors may be used to endorse or promote products derived from
                     18:  * this software without specific prior written permission.
                     19:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     20:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     21:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     22:  *
                     23:  *     @(#)nfsmount.h  7.6 (Berkeley) 6/28/90
                     24:  */
                     25: 
                     26: /*
                     27:  * Mount structure.
                     28:  * One allocated on every NFS mount.
                     29:  * Holds NFS specific information for mount.
                     30:  */
                     31: struct nfsmount {
                     32:        int     nm_flag;                /* Flags for soft/hard... */
                     33:        struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
                     34:        nfsv2fh_t nm_fh;                /* File handle of root dir */
                     35:        struct  socket *nm_so;          /* Rpc socket */
                     36:        int     nm_sotype;              /* Type of socket */
                     37:        int     nm_soproto;             /* and protocol */
                     38:        int     nm_soflags;             /* pr_flags for socket protocol */
                     39:        struct  mbuf *nm_nam;           /* Addr of server */
                     40:        short   nm_retry;               /* Max retry count */
                     41:        short   nm_rexmit;              /* Rexmit on previous request */
                     42:        short   nm_rtt;                 /* Round trip timer ticks @ NFS_HZ */
                     43:        short   nm_rto;                 /* Current timeout */
                     44:        short   nm_srtt;                /* Smoothed round trip time */
                     45:        short   nm_rttvar;              /* RTT variance */
                     46:        short   nm_currto;              /* Current rto of any nfsmount */
                     47:        short   nm_currexmit;           /* Max rexmit count of nfsmounts */
                     48:        short   nm_sent;                /* Request send count */
                     49:        short   nm_window;              /* Request send window (max) */
                     50:        short   nm_winext;              /* Window incremental value */
                     51:        short   nm_ssthresh;            /* Slowstart threshold */
                     52:        short   nm_salen;               /* Actual length of nm_sockaddr */
                     53:        int     nm_rsize;               /* Max size of read rpc */
                     54:        int     nm_wsize;               /* Max size of write rpc */
                     55: };
                     56: 
                     57: #ifdef KERNEL
                     58: /*
                     59:  * Convert mount ptr to nfsmount ptr.
                     60:  */
                     61: #define VFSTONFS(mp)   ((struct nfsmount *)((mp)->mnt_data))
                     62: #endif /* KERNEL */

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