include/linux/if.h

   1 /*
   2  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3  *              operating system.  INET is implemented using the  BSD Socket
   4  *              interface as the means of communication with the user level.
   5  *
   6  *              Global definitions for the INET interface module.
   7  *
   8  * Version:     @(#)if.h        1.0.2   04/18/93
   9  *
  10  * Authors:     Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
  11  *              Ross Biro, <bir7@leland.Stanford.Edu>
  12  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  13  *
  14  *              This program is free software; you can redistribute it and/or
  15  *              modify it under the terms of the GNU General Public License
  16  *              as published by the Free Software Foundation; either version
  17  *              2 of the License, or (at your option) any later version.
  18  */
  19 #ifndef _LINUX_IF_H
  20 #define _LINUX_IF_H
  21
  22 #include <linux/types.h>                /* for "__kernel_caddr_t" et al */
  23 #include <linux/socket.h>               /* for "struct sockaddr" et al  */
  24 #include <linux/compiler.h>             /* for "__user" et al           */
  25
  26 #define IFNAMSIZ        16
  27 #include <linux/hdlc/ioctl.h>
  28
  29 /* Standard interface flags (netdevice->flags). */
  30 #define IFF_UP          0x1             /* interface is up              */
  31 #define IFF_BROADCAST   0x2             /* broadcast address valid      */
  32 #define IFF_DEBUG       0x4             /* turn on debugging            */
  33 #define IFF_LOOPBACK    0x8             /* is a loopback net            */
  34 #define IFF_POINTOPOINT 0x10            /* interface is has p-p link    */
  35 #define IFF_NOTRAILERS  0x20            /* avoid use of trailers        */
  36 #define IFF_RUNNING     0x40            /* resources allocated          */
  37 #define IFF_NOARP       0x80            /* no ARP protocol              */
  38 #define IFF_PROMISC     0x100           /* receive all packets          */
  39 #define IFF_ALLMULTI    0x200           /* receive all multicast packets*/
  40
  41 #define IFF_MASTER      0x400           /* master of a load balancer    */
  42 #define IFF_SLAVE       0x800           /* slave of a load balancer     */
  43
  44 #define IFF_MULTICAST   0x1000          /* Supports multicast           */
  45
  46 #define IFF_VOLATILE    (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_MASTER|IFF_SLAVE|IFF_RUNNING)
  47
  48 #define IFF_PORTSEL     0x2000          /* can set media type           */
  49 #define IFF_AUTOMEDIA   0x4000          /* auto media select active     */
  50 #define IFF_DYNAMIC     0x8000          /* dialup device with changing addresses*/
  51
  52 /* Private (from user) interface flags (netdevice->priv_flags). */
  53 #define IFF_802_1Q_VLAN 0x1             /* 802.1Q VLAN device.          */
  54 #define IFF_EBRIDGE     0x2             /* Ethernet bridging device.    */
  55
  56 #define IF_GET_IFACE    0x0001          /* for querying only */
  57 #define IF_GET_PROTO    0x0002
  58
  59 /* For definitions see hdlc.h */
  60 #define IF_IFACE_V35    0x1000          /* V.35 serial interface        */
  61 #define IF_IFACE_V24    0x1001          /* V.24 serial interface        */
  62 #define IF_IFACE_X21    0x1002          /* X.21 serial interface        */
  63 #define IF_IFACE_T1     0x1003          /* T1 telco serial interface    */
  64 #define IF_IFACE_E1     0x1004          /* E1 telco serial interface    */
  65 #define IF_IFACE_SYNC_SERIAL 0x1005     /* can't be set by software     */
  66
  67 /* For definitions see hdlc.h */
  68 #define IF_PROTO_HDLC   0x2000          /* raw HDLC protocol            */
  69 #define IF_PROTO_PPP    0x2001          /* PPP protocol                 */
  70 #define IF_PROTO_CISCO  0x2002          /* Cisco HDLC protocol          */
  71 #define IF_PROTO_FR     0x2003          /* Frame Relay protocol         */
  72 #define IF_PROTO_FR_ADD_PVC 0x2004      /*    Create FR PVC             */
  73 #define IF_PROTO_FR_DEL_PVC 0x2005      /*    Delete FR PVC             */
  74 #define IF_PROTO_X25    0x2006          /* X.25                         */
  75 #define IF_PROTO_HDLC_ETH 0x2007        /* raw HDLC, Ethernet emulation */
  76 #define IF_PROTO_FR_ADD_ETH_PVC 0x2008  /*  Create FR Ethernet-bridged PVC */
  77 #define IF_PROTO_FR_DEL_ETH_PVC 0x2009  /*  Delete FR Ethernet-bridged PVC */
  78 #define IF_PROTO_FR_PVC 0x200A          /* for reading PVC status       */
  79 #define IF_PROTO_FR_ETH_PVC 0x200B
  80
  81
  82 /*
  83  *      Device mapping structure. I'd just gone off and designed a
  84  *      beautiful scheme using only loadable modules with arguments
  85  *      for driver options and along come the PCMCIA people 8)
  86  *
  87  *      Ah well. The get() side of this is good for WDSETUP, and it'll
  88  *      be handy for debugging things. The set side is fine for now and
  89  *      being very small might be worth keeping for clean configuration.
  90  */
  91
  92 struct ifmap
  93 {
  94         unsigned long mem_start;
  95         unsigned long mem_end;
  96         unsigned short base_addr;
  97         unsigned char irq;
  98         unsigned char dma;
  99         unsigned char port;
 100         /* 3 bytes spare */
 101 };
 102
 103 struct if_settings
 104 {
 105         unsigned int type;      /* Type of physical device or protocol */
 106         unsigned int size;      /* Size of the data allocated by the caller */
 107         union {
 108                 /* {atm/eth/dsl}_settings anyone ? */
 109                 raw_hdlc_proto          *raw_hdlc;
 110                 cisco_proto             *cisco;
 111                 fr_proto                *fr;
 112                 fr_proto_pvc            *fr_pvc;
 113                 fr_proto_pvc_info       *fr_pvc_info;
 114
 115                 /* interface settings */
 116                 sync_serial_settings    *sync;
 117                 te1_settings            *te1;
 118         } ifs_ifsu;
 119 };
 120
 121 /*
 122  * Interface request structure used for socket
 123  * ioctl's.  All interface ioctl's must have parameter
 124  * definitions which begin with ifr_name.  The
 125  * remainder may be interface specific.
 126  */
 127
 128 struct ifreq
 129 {
 130 #define IFHWADDRLEN     6
 131         union
 132         {
 133                 char    ifrn_name[IFNAMSIZ];            /* if name, e.g. "en0" */
 134         } ifr_ifrn;
 135
 136         union {
 137                 struct  sockaddr ifru_addr;
 138                 struct  sockaddr ifru_dstaddr;
 139                 struct  sockaddr ifru_broadaddr;
 140                 struct  sockaddr ifru_netmask;
 141                 struct  sockaddr ifru_hwaddr;
 142                 short   ifru_flags;
 143                 int     ifru_ivalue;
 144                 int     ifru_mtu;
 145                 struct  ifmap ifru_map;
 146                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 147                 char    ifru_newname[IFNAMSIZ];
 148                 char __user *   ifru_data;
 149                 struct  if_settings ifru_settings;
 150         } ifr_ifru;
 151 };
 152
 153 #define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
 154 #define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
 155 #define ifr_addr        ifr_ifru.ifru_addr      /* address              */
 156 #define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
 157 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
 158 #define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
 159 #define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
 160 #define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
 161 #define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
 162 #define ifr_map         ifr_ifru.ifru_map       /* device map           */
 163 #define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
 164 #define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 165 #define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
 166 #define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
 167 #define ifr_qlen        ifr_ifru.ifru_ivalue    /* Queue length         */
 168 #define ifr_newname     ifr_ifru.ifru_newname   /* New name             */
 169 #define ifr_settings    ifr_ifru.ifru_settings  /* Device/proto settings*/
 170
 171 /*
 172  * Structure used in SIOCGIFCONF request.
 173  * Used to retrieve interface configuration
 174  * for machine (useful for programs which
 175  * must know all networks accessible).
 176  */
 177
 178 struct ifconf
 179 {
 180         int     ifc_len;                        /* size of buffer       */
 181         union
 182         {
 183                 char *                  ifcu_buf;
 184                 struct  ifreq           *ifcu_req;
 185         } ifc_ifcu;
 186 };
 187 #define ifc_buf ifc_ifcu.ifcu_buf               /* buffer address       */
 188 #define ifc_req ifc_ifcu.ifcu_req               /* array of structures  */
 189
 190
 191 #endif /* _LINUX_IF_H */