interface.h

Macros

IFF_BROADCAST     X
IFF_DEBUG         X
IFF_INTERFACE     X
IFF_LOOPBACK      X
IFF_PASSIVE       X
IFF_POINTOPOINT   X
IFF_REMOTE        X
IFF_SUBNET        X
IFF_UP            X
int_broadaddr     X
int_dstaddr       X

struct's

interface         X

   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();