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Annotation of 42BSD/etc/routed/table.h, revision 1.1

1.1     ! root        1: /*     table.h 4.1     83/01/11        */
        !             2: 
        !             3: /*
        !             4:  * Routing table management daemon.
        !             5:  */
        !             6: 
        !             7: /*
        !             8:  * Routing table structure; differs a bit from kernel tables.
        !             9:  *
        !            10:  * Note: the union below must agree in the first 4 members
        !            11:  * so the ioctl's will work.
        !            12:  */
        !            13: struct rthash {
        !            14:        struct  rt_entry *rt_forw;
        !            15:        struct  rt_entry *rt_back;
        !            16: };
        !            17: 
        !            18: struct rt_entry {
        !            19:        struct  rt_entry *rt_forw;
        !            20:        struct  rt_entry *rt_back;
        !            21:        union {
        !            22:                struct  rtentry rtu_rt;
        !            23:                struct {
        !            24:                        u_long  rtu_hash;
        !            25:                        struct  sockaddr rtu_dst;
        !            26:                        struct  sockaddr rtu_router;
        !            27:                        short   rtu_flags;
        !            28:                        short   rtu_state;
        !            29:                        int     rtu_timer;
        !            30:                        int     rtu_metric;
        !            31:                        struct  interface *rtu_ifp;
        !            32:                } rtu_entry;
        !            33:        } rt_rtu;
        !            34: };
        !            35: 
        !            36: #define        rt_rt           rt_rtu.rtu_rt                   /* pass to ioctl */
        !            37: #define        rt_hash         rt_rtu.rtu_entry.rtu_hash       /* for net or host */
        !            38: #define        rt_dst          rt_rtu.rtu_entry.rtu_dst        /* match value */
        !            39: #define        rt_router       rt_rtu.rtu_entry.rtu_router     /* who to forward to */
        !            40: #define        rt_flags        rt_rtu.rtu_entry.rtu_flags      /* kernel flags */
        !            41: #define        rt_timer        rt_rtu.rtu_entry.rtu_timer      /* for invalidation */
        !            42: #define        rt_state        rt_rtu.rtu_entry.rtu_state      /* see below */
        !            43: #define        rt_metric       rt_rtu.rtu_entry.rtu_metric     /* cost of route */
        !            44: #define        rt_ifp          rt_rtu.rtu_entry.rtu_ifp        /* interface to take */
        !            45: 
        !            46: #define        ROUTEHASHSIZ    19
        !            47: 
        !            48: /*
        !            49:  * "State" of routing table entry.
        !            50:  */
        !            51: #define        RTS_CHANGED     0x1             /* route has been altered recently */
        !            52: #define        RTS_PASSIVE     0x20            /* don't time out route */
        !            53: #define        RTS_INTERFACE   0x40            /* route is for network interface */
        !            54: #define        RTS_REMOTE      0x80            /* route is for ``remote'' entity */
        !            55: 
        !            56: struct rthash nethash[ROUTEHASHSIZ];
        !            57: struct rthash hosthash[ROUTEHASHSIZ];
        !            58: struct rt_entry *rtlookup();
        !            59: struct rt_entry *rtfind();

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