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Annotation of 43BSD/etc/routed/interface.h, revision 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:  *     @(#)interface.h 5.3 (Berkeley) 4/20/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Routing table management daemon.
        !            11:  */
        !            12: 
        !            13: /*
        !            14:  * An ``interface'' is similar to an ifnet structure,
        !            15:  * except it doesn't contain q'ing info, and it also
        !            16:  * handles ``logical'' interfaces (remote gateways
        !            17:  * that we want to keep polling even if they go down).
        !            18:  * The list of interfaces which we maintain is used
        !            19:  * in supplying the gratuitous routing table updates.
        !            20:  */
        !            21: struct interface {
        !            22:        struct  interface *int_next;
        !            23:        struct  sockaddr int_addr;              /* address on this host */
        !            24:        union {
        !            25:                struct  sockaddr intu_broadaddr;
        !            26:                struct  sockaddr intu_dstaddr;
        !            27:        } int_intu;
        !            28: #define        int_broadaddr   int_intu.intu_broadaddr /* broadcast address */
        !            29: #define        int_dstaddr     int_intu.intu_dstaddr   /* other end of p-to-p link */
        !            30:        int     int_metric;                     /* init's routing entry */
        !            31:        int     int_flags;                      /* see below */
        !            32:        /* START INTERNET SPECIFIC */
        !            33:        u_long  int_net;                        /* network # */
        !            34:        u_long  int_netmask;                    /* net mask for addr */
        !            35:        u_long  int_subnet;                     /* subnet # */
        !            36:        u_long  int_subnetmask;                 /* subnet mask for addr */
        !            37:        /* END INTERNET SPECIFIC */
        !            38:        struct  ifdebug int_input, int_output;  /* packet tracing stuff */
        !            39:        int     int_ipackets;                   /* input packets received */
        !            40:        int     int_opackets;                   /* output packets sent */
        !            41:        char    *int_name;                      /* from kernel if structure */
        !            42:        u_short int_transitions;                /* times gone up-down */
        !            43: };
        !            44: 
        !            45: /*
        !            46:  * 0x1 to 0x10 are reused from the kernel's ifnet definitions,
        !            47:  * the others agree with the RTS_ flags defined elsewhere.
        !            48:  */
        !            49: #define        IFF_UP          0x1             /* interface is up */
        !            50: #define        IFF_BROADCAST   0x2             /* broadcast address valid */
        !            51: #define        IFF_DEBUG       0x4             /* turn on debugging */
        !            52: #define        IFF_LOOPBACK    0x8             /* software loopback net */
        !            53: #define        IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
        !            54: 
        !            55: #define        IFF_SUBNET      0x1000          /* interface on subnetted network */
        !            56: #define        IFF_PASSIVE     0x2000          /* can't tell if up/down */
        !            57: #define        IFF_INTERFACE   0x4000          /* hardware interface */
        !            58: #define        IFF_REMOTE      0x8000          /* interface isn't on this machine */
        !            59: 
        !            60: struct interface *if_ifwithaddr();
        !            61: struct interface *if_ifwithdstaddr();
        !            62: struct interface *if_ifwithnet();
        !            63: struct interface *if_iflookup();

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