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