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Annotation of 42BSD/etc/routed/interface.h, revision 1.1

1.1     ! root        1: /*     interface.h     4.1     83/01/11        */
        !             2: 
        !             3: /*
        !             4:  * Routing table management daemon.
        !             5:  */
        !             6: 
        !             7: /*
        !             8:  * An ``interface'' is similar to an ifnet structure,
        !             9:  * except it doesn't contain q'ing info, and it also
        !            10:  * handles ``logical'' interfaces (remote gateways
        !            11:  * that we want to keep polling even if they go down).
        !            12:  * The list of interfaces which we maintain is used
        !            13:  * in supplying the gratuitous routing table updates.
        !            14:  */
        !            15: struct interface {
        !            16:        struct  interface *int_next;
        !            17:        struct  sockaddr int_addr;              /* address on this host */
        !            18:        union {
        !            19:                struct  sockaddr intu_broadaddr;
        !            20:                struct  sockaddr intu_dstaddr;
        !            21:        } int_intu;
        !            22: #define        int_broadaddr   int_intu.intu_broadaddr /* broadcast address */
        !            23: #define        int_dstaddr     int_intu.intu_dstaddr   /* other end of p-to-p link */
        !            24:        int     int_metric;                     /* init's routing entry */
        !            25:        int     int_flags;                      /* see below */
        !            26:        int     int_net;                        /* network # */
        !            27:        struct  ifdebug int_input, int_output;  /* packet tracing stuff */
        !            28:        int     int_ipackets;                   /* input packets received */
        !            29:        int     int_opackets;                   /* output packets sent */
        !            30:        char    *int_name;                      /* from kernel if structure */
        !            31:        u_short int_transitions;                /* times gone up-down */
        !            32: };
        !            33: 
        !            34: /*
        !            35:  * 0x1 to 0x10 are reused from the kernel's ifnet definitions,
        !            36:  * the others agree with the RTS_ flags defined below
        !            37:  */
        !            38: #define        IFF_UP          0x1             /* interface is up */
        !            39: #define        IFF_BROADCAST   0x2             /* broadcast address valid */
        !            40: #define        IFF_DEBUG       0x4             /* turn on debugging */
        !            41: #define        IFF_ROUTE       0x8             /* routing entry installed */
        !            42: #define        IFF_POINTOPOINT 0x10            /* interface is point-to-point link */
        !            43: #define        IFF_PASSIVE     0x20            /* can't tell if up/down */
        !            44: #define        IFF_INTERFACE   0x40            /* hardware interface */
        !            45: #define        IFF_REMOTE      0x80            /* interface isn't on this machine */
        !            46: 
        !            47: struct interface *if_ifwithaddr();
        !            48: struct interface *if_ifwithnet();
        !            49: struct interface *if_iflookup();

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