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Annotation of 43BSDTahoe/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.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that this notice is preserved and that due credit is given
                      7:  * to the University of California at Berkeley. The name of the University
                      8:  * may not be used to endorse or promote products derived from this
                      9:  * software without specific prior written permission. This software
                     10:  * is provided ``as is'' without express or implied warranty.
                     11:  *
                     12:  *     @(#)table.h     5.5 (Berkeley) 2/16/88
                     13:  */
                     14: 
                     15: /*
                     16:  * Routing table management daemon.
                     17:  */
                     18: 
                     19: /*
                     20:  * Routing table structure; differs a bit from kernel tables.
                     21:  *
                     22:  * Note: the union below must agree in the first 4 members
                     23:  * so the ioctl's will work.
                     24:  */
                     25: struct rthash {
                     26:        struct  rt_entry *rt_forw;
                     27:        struct  rt_entry *rt_back;
                     28: };
                     29: 
                     30: struct rt_entry {
                     31:        struct  rt_entry *rt_forw;
                     32:        struct  rt_entry *rt_back;
                     33:        union {
                     34:                struct  rtentry rtu_rt;
                     35:                struct {
                     36:                        u_long  rtu_hash;
                     37:                        struct  sockaddr rtu_dst;
                     38:                        struct  sockaddr rtu_router;
                     39:                        short   rtu_flags;
                     40:                        short   rtu_state;
                     41:                        int     rtu_timer;
                     42:                        int     rtu_metric;
                     43:                        int     rtu_ifmetric;
                     44:                        struct  interface *rtu_ifp;
                     45:                } rtu_entry;
                     46:        } rt_rtu;
                     47: };
                     48: 
                     49: #define        rt_rt           rt_rtu.rtu_rt                   /* pass to ioctl */
                     50: #define        rt_hash         rt_rtu.rtu_entry.rtu_hash       /* for net or host */
                     51: #define        rt_dst          rt_rtu.rtu_entry.rtu_dst        /* match value */
                     52: #define        rt_router       rt_rtu.rtu_entry.rtu_router     /* who to forward to */
                     53: #define        rt_flags        rt_rtu.rtu_entry.rtu_flags      /* kernel flags */
                     54: #define        rt_timer        rt_rtu.rtu_entry.rtu_timer      /* for invalidation */
                     55: #define        rt_state        rt_rtu.rtu_entry.rtu_state      /* see below */
                     56: #define        rt_metric       rt_rtu.rtu_entry.rtu_metric     /* cost of route */
                     57: #define        rt_ifmetric     rt_rtu.rtu_entry.rtu_ifmetric   /* cost of route if */
                     58: #define        rt_ifp          rt_rtu.rtu_entry.rtu_ifp        /* interface to take */
                     59: 
                     60: #define        ROUTEHASHSIZ    32              /* must be a power of 2 */
                     61: #define        ROUTEHASHMASK   (ROUTEHASHSIZ - 1)
                     62: 
                     63: /*
                     64:  * "State" of routing table entry.
                     65:  */
                     66: #define        RTS_CHANGED     0x1             /* route has been altered recently */
                     67: #define        RTS_EXTERNAL    0x2             /* extern info, not installed or sent */
                     68: #define        RTS_INTERNAL    0x4             /* internal route, not installed */
                     69: #define        RTS_PASSIVE     IFF_PASSIVE     /* don't time out route */
                     70: #define        RTS_INTERFACE   IFF_INTERFACE   /* route is for network interface */
                     71: #define        RTS_REMOTE      IFF_REMOTE      /* route is for ``remote'' entity */
                     72: #define        RTS_SUBNET      IFF_SUBNET      /* route is for network subnet */
                     73: 
                     74: /*
                     75:  * Flags are same as kernel, with this addition for af_rtflags:
                     76:  */
                     77: #define        RTF_SUBNET      0x8000          /* pseudo: route to subnet */
                     78: 
                     79: struct rthash nethash[ROUTEHASHSIZ];
                     80: struct rthash hosthash[ROUTEHASHSIZ];
                     81: struct rt_entry *rtlookup();
                     82: struct rt_entry *rtfind();

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