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Annotation of 43BSDTahoe/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.
        !             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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