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Annotation of 43BSDTahoe/etc/routed/interface.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:  *     @(#)interface.h 5.4 (Berkeley) 2/16/88
                     13:  */
                     14: 
                     15: /*
                     16:  * Routing table management daemon.
                     17:  */
                     18: 
                     19: /*
                     20:  * An ``interface'' is similar to an ifnet structure,
                     21:  * except it doesn't contain q'ing info, and it also
                     22:  * handles ``logical'' interfaces (remote gateways
                     23:  * that we want to keep polling even if they go down).
                     24:  * The list of interfaces which we maintain is used
                     25:  * in supplying the gratuitous routing table updates.
                     26:  */
                     27: struct interface {
                     28:        struct  interface *int_next;
                     29:        struct  sockaddr int_addr;              /* address on this host */
                     30:        union {
                     31:                struct  sockaddr intu_broadaddr;
                     32:                struct  sockaddr intu_dstaddr;
                     33:        } int_intu;
                     34: #define        int_broadaddr   int_intu.intu_broadaddr /* broadcast address */
                     35: #define        int_dstaddr     int_intu.intu_dstaddr   /* other end of p-to-p link */
                     36:        int     int_metric;                     /* init's routing entry */
                     37:        int     int_flags;                      /* see below */
                     38:        /* START INTERNET SPECIFIC */
                     39:        u_long  int_net;                        /* network # */
                     40:        u_long  int_netmask;                    /* net mask for addr */
                     41:        u_long  int_subnet;                     /* subnet # */
                     42:        u_long  int_subnetmask;                 /* subnet mask for addr */
                     43:        /* END INTERNET SPECIFIC */
                     44:        struct  ifdebug int_input, int_output;  /* packet tracing stuff */
                     45:        int     int_ipackets;                   /* input packets received */
                     46:        int     int_opackets;                   /* output packets sent */
                     47:        char    *int_name;                      /* from kernel if structure */
                     48:        u_short int_transitions;                /* times gone up-down */
                     49: };
                     50: 
                     51: /*
                     52:  * 0x1 to 0x10 are reused from the kernel's ifnet definitions,
                     53:  * the others agree with the RTS_ flags defined elsewhere.
                     54:  */
                     55: #define        IFF_UP          0x1             /* interface is up */
                     56: #define        IFF_BROADCAST   0x2             /* broadcast address valid */
                     57: #define        IFF_DEBUG       0x4             /* turn on debugging */
                     58: #define        IFF_LOOPBACK    0x8             /* software loopback net */
                     59: #define        IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
                     60: 
                     61: #define        IFF_SUBNET      0x1000          /* interface on subnetted network */
                     62: #define        IFF_PASSIVE     0x2000          /* can't tell if up/down */
                     63: #define        IFF_INTERFACE   0x4000          /* hardware interface */
                     64: #define        IFF_REMOTE      0x8000          /* interface isn't on this machine */
                     65: 
                     66: struct interface *if_ifwithaddr();
                     67: struct interface *if_ifwithdstaddr();
                     68: struct interface *if_ifwithnet();
                     69: struct interface *if_iflookup();

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