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Annotation of 42BSD/sys/vaxif/if_hy.h, revision 1.1

1.1     ! root        1: /*     if_hy.h 6.1     83/07/29        */
        !             2: 
        !             3: /*
        !             4:  * Network Systems Corporation Hyperchannel
        !             5:  *     routing database
        !             6:  */
        !             7: 
        !             8: #define HYRSIZE  37    /* max number of adapters in routing tables */
        !             9: 
        !            10: struct hyroute {
        !            11:        struct  timeval hyr_lasttime;           /* last update time */
        !            12:        struct hy_hash {
        !            13:                u_short hyr_flags;      /* status flags - see below */
        !            14:                u_short hyr_key;                /* desired address */
        !            15:                union {
        !            16:                        /*
        !            17:                         * direct entry (can get there directly)
        !            18:                         */
        !            19:                        struct {
        !            20:                                u_short hyru_dst;               /* adapter number & port */
        !            21:                                u_short hyru_ctl;               /* trunks to try */
        !            22:                                u_short hyru_access;    /* access code (mostly unused) */
        !            23:                        } hyr_d;
        !            24: #define        hyr_dst         hyr_u.hyr_d.hyru_dst
        !            25: #define        hyr_ctl         hyr_u.hyr_d.hyru_ctl
        !            26: #define        hyr_access      hyr_u.hyr_d.hyru_access
        !            27:                        /*
        !            28:                         * indirect entry (one or more hops required)
        !            29:                         */
        !            30:                        struct {
        !            31:                                u_char hyru_pgate;      /* 1st gateway slot */
        !            32:                                u_char hyru_egate;      /* # gateways */
        !            33:                                u_char hyru_nextgate;   /* gateway to use next */
        !            34:                        } hyr_i;
        !            35: #define        hyr_pgate       hyr_u.hyr_i.hyru_pgate
        !            36: #define        hyr_egate       hyr_u.hyr_i.hyru_egate
        !            37: #define        hyr_nextgate    hyr_u.hyr_i.hyru_nextgate
        !            38:                } hyr_u;
        !            39:        } hyr_hash[HYRSIZE];
        !            40:        u_char hyr_gateway[256];
        !            41: };
        !            42: 
        !            43: #ifdef KERNEL
        !            44: struct hyroute hy_route[NHY];
        !            45: #endif
        !            46: 
        !            47: #define HYR_INUSE      0x01    /* entry in use */
        !            48: #define HYR_DIR                0x02    /* direct entry */
        !            49: #define HYR_GATE       0x04    /* gateway entry */
        !            50: 
        !            51: #define HYRHASH(x) (((x) ^ ((x) >> 16)) % HYRSIZE)
        !            52: 
        !            53: #define        HYSETROUTE      _IOW(H, 0x80, sizeof (struct hyroute))
        !            54: #define        HYGETROUTE      _IOR(H, 0x81, sizeof (struct hyroute))

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