sysdeps/unix/sysv/aix/net/if.h

   1 /* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _NET_IF_H
  20
  21 #define _NET_IF_H       1
  22 #include <features.h>
  23
  24 #include <sys/types.h>
  25 #include <sys/socket.h>
  26
  27 /* Standard interface flags. */
  28 enum
  29   {
  30     IFF_UP = 0x1,               /* Interface is up.  */
  31 #define IFF_UP  IFF_UP
  32     IFF_BROADCAST = 0x2,        /* Broadcast address valid.  */
  33 #define IFF_BROADCAST   IFF_BROADCAST
  34     IFF_DEBUG = 0x4,            /* Turn on debugging.  */
  35 #define IFF_DEBUG       IFF_DEBUG
  36     IFF_LOOPBACK = 0x8,         /* Is a loopback net.  */
  37 #define IFF_LOOPBACK    IFF_LOOPBACK
  38     IFF_POINTOPOINT = 0x10,     /* Interface is point-to-point link.  */
  39 #define IFF_POINTOPOINT IFF_POINTOPOINT
  40     IFF_NOTRAILERS = 0x20,      /* Avoid use of trailers.  */
  41 #define IFF_NOTRAILERS  IFF_NOTRAILERS
  42     IFF_RUNNING = 0x40,         /* Resources allocated.  */
  43 #define IFF_RUNNING     IFF_RUNNING
  44     IFF_NOARP = 0x80,           /* No address resolution protocol.  */
  45 #define IFF_NOARP       IFF_NOARP
  46     IFF_PROMISC = 0x100,        /* Receive all packets.  */
  47 #define IFF_PROMISC     IFF_PROMISC
  48
  49     /* Not supported */
  50     IFF_ALLMULTI = 0x200,       /* Receive all multicast packets.  */
  51 #define IFF_ALLMULTI    IFF_ALLMULTI
  52
  53     IFF_OACTIVE = 0x400,        /* Transmission in progress.  */
  54 #define IFF_OACTIVE     IFF_OACTIVE
  55     IFF_SIMPLEX = 0x800,        /* Cannot hear own transmissions.  */
  56 #define IFF_SIMPLEX     IFF_SIMPLEX
  57     IFF_DO_HW_LOOPBACK = 0x10000, /* Force loopback through hardware.  */
  58 #define IFF_DO_HW_LOOPBACK      IFF_DO_HW_LOOPBACK
  59     IFF_ALLCAST = 0x20000,      /* Global broadcast.  */
  60 #define IFF_ALLCAST     IFF_ALLCAST
  61     IFF_BRIDGE = 0x40000,       /* Receive all bridge packets.  */
  62 #define IFF_BRIDGE      IFF_BRIDGE
  63     IFF_NOECHO = IFF_SIMPLEX,   /* Reeives echo packets.  */
  64 #define IFF_NOECHO      IFF_NOECHO
  65   };
  66
  67 /* The ifaddr structure contains information about one address of an
  68    interface.  They are maintained by the different address families,
  69    are allocated and attached when an address is set, and are linked
  70    together so all addresses for an interface can be located.  */
  71
  72 struct ifaddr
  73   {
  74     struct sockaddr ifa_addr;   /* Address of interface.  */
  75     union
  76       {
  77         struct sockaddr ifu_broadaddr;
  78         struct sockaddr ifu_dstaddr;
  79       } ifa_ifu;
  80     struct sockaddr *ifa_netmask; /* Used to determine subnet.  */
  81     struct iface *ifa_ifp;      /* Back-pointer to interface.  */
  82     struct ifaddr *ifa_next;    /* Next address for interface.  */
  83     void (*ifa_rtrequest) (void);
  84     struct rtentry *ifa_rt;
  85     unsigned short int ifa_flags;
  86     short int ifa_refcnt;
  87   };
  88
  89 #define ifa_broadaddr   ifa_ifu.ifu_broadaddr   /* broadcast address    */
  90 #define ifa_dstaddr     ifa_ifu.ifu_dstaddr     /* other end of link    */
  91
  92 /* Interface request structure used for socket ioctl's.  All interface
  93    ioctl's must have parameter definitions which begin with ifr_name.
  94    The remainder may be interface specific.  */
  95
  96 struct ifreq
  97   {
  98 #define IFHWADDRLEN     6
  99 #define IFNAMSIZ        16
 100     union
 101       {
 102         char ifrn_name[IFNAMSIZ];       /* Interface name, e.g. "en0".  */
 103       } ifr_ifrn;
 104
 105     union
 106       {
 107         struct sockaddr ifru_addr;
 108         struct sockaddr ifru_dstaddr;
 109         struct sockaddr ifru_broadaddr;
 110         struct sockaddr ifru_netmask;
 111         struct sockaddr ifru_hwaddr;
 112         short int ifru_flags;
 113         int ifru_ivalue;
 114         unsigned int ifru_mtu;
 115         char ifru_slave[IFNAMSIZ];      /* Just fits the size */
 116         __caddr_t ifru_data;
 117         unsigned short int ifru_site6;
 118       } ifr_ifru;
 119   };
 120
 121 /* Old AIX 3.1 version.  */
 122 struct oifreq
 123 {
 124   char ifr_name[IFNAMSIZ];              /* if name, e.g. "en0" */
 125   union
 126   {
 127     struct  sockaddr ifru_addr;
 128     struct  sockaddr ifru_dstaddr;
 129     struct  sockaddr ifru_broadaddr;
 130     int ifru_flags;
 131     int ifru_metric;
 132     caddr_t ifru_data;
 133     unsigned int ifru_mtu;
 134   } ifr_ifru;
 135   unsigned char reserved[8];
 136 };
 137
 138
 139 #define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
 140 #define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
 141 #define ifr_addr        ifr_ifru.ifru_addr      /* address              */
 142 #define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
 143 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
 144 #define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
 145 #define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
 146 #define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
 147 #define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
 148 #define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
 149 #define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 150 #define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
 151 #define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
 152 #define ifr_baudrate    ifr_ifru.ifru_ivalue    /* link bandwidth       */
 153 #define ifr_qlen        ifr_ifru.ifru_ivalue    /* queue length         */
 154 #define ifr_site6       ifr_ifru.ifru_site6     /* IPv6 site index      */
 155
 156
 157 /* Structure used in SIOCGIFCONF request.  Used to retrieve interface
 158    configuration for machine (useful for programs which must know all
 159    networks accessible).  */
 160
 161 struct ifconf
 162   {
 163     int ifc_len;                        /* Size of buffer.  */
 164     union
 165       {
 166         __caddr_t ifcu_buf;
 167         struct ifreq *ifcu_req;
 168       } ifc_ifcu;
 169   };
 170 #define ifc_buf ifc_ifcu.ifcu_buf       /* Buffer address.  */
 171 #define ifc_req ifc_ifcu.ifcu_req       /* Array of structures.  */
 172
 173 __BEGIN_DECLS
 174
 175 /* Convert an interface name to an index, and vice versa.  */
 176
 177 extern unsigned int if_nametoindex (__const char *__ifname) __THROW;
 178 extern char *if_indextoname (unsigned int __ifindex, char *__ifname) __THROW;
 179
 180 /* Return a list of all interfaces and their indices.  */
 181
 182 struct if_nameindex
 183   {
 184     unsigned int if_index;      /* 1, 2, ... */
 185     char *if_name;              /* null terminated name: "eth0", ... */
 186   };
 187
 188 extern struct if_nameindex *if_nameindex (void) __THROW;
 189
 190 /* Free the data returned from if_nameindex.  */
 191
 192 extern void if_freenameindex (struct if_nameindex *__ptr) __THROW;
 193
 194 __END_DECLS
 195
 196 #endif /* net/if.h */