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Annotation of 43BSD/etc/routed/table.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  *
                      6:  *     @(#)table.h     5.2 (Berkeley) 4/20/86
                      7:  */
                      8: 
                      9: /*
                     10:  * Routing table management daemon.
                     11:  */
                     12: 
                     13: /*
                     14:  * Routing table structure; differs a bit from kernel tables.
                     15:  *
                     16:  * Note: the union below must agree in the first 4 members
                     17:  * so the ioctl's will work.
                     18:  */
                     19: struct rthash {
                     20:        struct  rt_entry *rt_forw;
                     21:        struct  rt_entry *rt_back;
                     22: };
                     23: 
                     24: struct rt_entry {
                     25:        struct  rt_entry *rt_forw;
                     26:        struct  rt_entry *rt_back;
                     27:        union {
                     28:                struct  rtentry rtu_rt;
                     29:                struct {
                     30:                        u_long  rtu_hash;
                     31:                        struct  sockaddr rtu_dst;
                     32:                        struct  sockaddr rtu_router;
                     33:                        short   rtu_flags;
                     34:                        short   rtu_state;
                     35:                        int     rtu_timer;
                     36:                        int     rtu_metric;
                     37:                        struct  interface *rtu_ifp;
                     38:                } rtu_entry;
                     39:        } rt_rtu;
                     40: };
                     41: 
                     42: #define        rt_rt           rt_rtu.rtu_rt                   /* pass to ioctl */
                     43: #define        rt_hash         rt_rtu.rtu_entry.rtu_hash       /* for net or host */
                     44: #define        rt_dst          rt_rtu.rtu_entry.rtu_dst        /* match value */
                     45: #define        rt_router       rt_rtu.rtu_entry.rtu_router     /* who to forward to */
                     46: #define        rt_flags        rt_rtu.rtu_entry.rtu_flags      /* kernel flags */
                     47: #define        rt_timer        rt_rtu.rtu_entry.rtu_timer      /* for invalidation */
                     48: #define        rt_state        rt_rtu.rtu_entry.rtu_state      /* see below */
                     49: #define        rt_metric       rt_rtu.rtu_entry.rtu_metric     /* cost of route */
                     50: #define        rt_ifp          rt_rtu.rtu_entry.rtu_ifp        /* interface to take */
                     51: 
                     52: #define        ROUTEHASHSIZ    32              /* must be a power of 2 */
                     53: #define        ROUTEHASHMASK   (ROUTEHASHSIZ - 1)
                     54: 
                     55: /*
                     56:  * "State" of routing table entry.
                     57:  */
                     58: #define        RTS_CHANGED     0x1             /* route has been altered recently */
                     59: #define        RTS_EXTERNAL    0x2             /* extern info, not installed or sent */
                     60: #define        RTS_INTERNAL    0x4             /* internal route, not installed */
                     61: #define        RTS_PASSIVE     IFF_PASSIVE     /* don't time out route */
                     62: #define        RTS_INTERFACE   IFF_INTERFACE   /* route is for network interface */
                     63: #define        RTS_REMOTE      IFF_REMOTE      /* route is for ``remote'' entity */
                     64: #define        RTS_SUBNET      IFF_SUBNET      /* route is for network subnet */
                     65: 
                     66: /*
                     67:  * Flags are same as kernel, with this addition for af_rtflags:
                     68:  */
                     69: #define        RTF_SUBNET      0x8000          /* pseudo: route to subnet */
                     70: 
                     71: struct rthash nethash[ROUTEHASHSIZ];
                     72: struct rthash hosthash[ROUTEHASHSIZ];
                     73: struct rt_entry *rtlookup();
                     74: struct rt_entry *rtfind();

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