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Annotation of 43BSD/etc/XNSrouted/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) 8/16/85";
        !             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:  * We list only one address for  each interface, the AF_XNS one.
        !            21:  */
        !            22: #define NIFADDR 3
        !            23: struct interface {
        !            24:        struct  interface *int_next;
        !            25:        struct  sockaddr int_addr;              /* address on this host */
        !            26:        union {
        !            27:                struct  sockaddr intu_broadaddr;
        !            28:                struct  sockaddr intu_dstaddr;
        !            29:        } int_intu;
        !            30: #define        int_broadaddr   int_intu.intu_broadaddr /* broadcast address */
        !            31: #define        int_dstaddr     int_intu.intu_dstaddr   /* other end of p-to-p link */
        !            32:        int     int_metric;                     /* init's routing entry */
        !            33:        int     int_flags;                      /* see below */
        !            34:        struct  ifdebug int_input, int_output;  /* packet tracing stuff */
        !            35:        int     int_ipackets;                   /* input packets received */
        !            36:        int     int_opackets;                   /* output packets sent */
        !            37:        char    *int_name;                      /* from kernel if structure */
        !            38:        u_short int_transitions;                /* times gone up-down */
        !            39: /*XNS Specific entry */
        !            40:        struct  sameq {
        !            41:                struct sameq *n;                /* q of other pt-to-pt links */
        !            42:                struct sameq *p;                /* with same net # */
        !            43:        }       int_sq;
        !            44: };
        !            45: 
        !            46: /*
        !            47:  * 0x1 to 0x10 are reused from the kernel's ifnet definitions,
        !            48:  * the others agree with the RTS_ flags defined elsewhere.
        !            49:  */
        !            50: #define        IFF_UP          0x1             /* interface is up */
        !            51: #define        IFF_BROADCAST   0x2             /* broadcast address valid */
        !            52: #define        IFF_DEBUG       0x4             /* turn on debugging */
        !            53: #define        IFF_ROUTE       0x8             /* routing entry installed */
        !            54: #define        IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
        !            55: 
        !            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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