linux/include/linux/if.h
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   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
  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#define IFALIASZ        256
  28#include <linux/hdlc/ioctl.h>
  29
  30/* Standard interface flags (netdevice->flags). */
  31#define IFF_UP          0x1             /* interface is up              */
  32#define IFF_BROADCAST   0x2             /* broadcast address valid      */
  33#define IFF_DEBUG       0x4             /* turn on debugging            */
  34#define IFF_LOOPBACK    0x8             /* is a loopback net            */
  35#define IFF_POINTOPOINT 0x10            /* interface is has p-p link    */
  36#define IFF_NOTRAILERS  0x20            /* avoid use of trailers        */
  37#define IFF_RUNNING     0x40            /* interface RFC2863 OPER_UP    */
  38#define IFF_NOARP       0x80            /* no ARP protocol              */
  39#define IFF_PROMISC     0x100           /* receive all packets          */
  40#define IFF_ALLMULTI    0x200           /* receive all multicast packets*/
  41
  42#define IFF_MASTER      0x400           /* master of a load balancer    */
  43#define IFF_SLAVE       0x800           /* slave of a load balancer     */
  44
  45#define IFF_MULTICAST   0x1000          /* Supports multicast           */
  46
  47#define IFF_PORTSEL     0x2000          /* can set media type           */
  48#define IFF_AUTOMEDIA   0x4000          /* auto media select active     */
  49#define IFF_DYNAMIC     0x8000          /* dialup device with changing addresses*/
  50
  51#define IFF_LOWER_UP    0x10000         /* driver signals L1 up         */
  52#define IFF_DORMANT     0x20000         /* driver signals dormant       */
  53
  54#define IFF_ECHO        0x40000         /* echo sent packets            */
  55
  56#define IFF_VOLATILE    (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
  57                IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
  58
  59/* Private (from user) interface flags (netdevice->priv_flags). */
  60#define IFF_802_1Q_VLAN 0x1             /* 802.1Q VLAN device.          */
  61#define IFF_EBRIDGE     0x2             /* Ethernet bridging device.    */
  62#define IFF_SLAVE_INACTIVE      0x4     /* bonding slave not the curr. active */
  63#define IFF_MASTER_8023AD       0x8     /* bonding master, 802.3ad.     */
  64#define IFF_MASTER_ALB  0x10            /* bonding master, balance-alb. */
  65#define IFF_BONDING     0x20            /* bonding master or slave      */
  66#define IFF_SLAVE_NEEDARP 0x40          /* need ARPs for validation     */
  67#define IFF_ISATAP      0x80            /* ISATAP interface (RFC4214)   */
  68#define IFF_MASTER_ARPMON 0x100         /* bonding master, ARP mon in use */
  69
  70#define IF_GET_IFACE    0x0001          /* for querying only */
  71#define IF_GET_PROTO    0x0002
  72
  73/* For definitions see hdlc.h */
  74#define IF_IFACE_V35    0x1000          /* V.35 serial interface        */
  75#define IF_IFACE_V24    0x1001          /* V.24 serial interface        */
  76#define IF_IFACE_X21    0x1002          /* X.21 serial interface        */
  77#define IF_IFACE_T1     0x1003          /* T1 telco serial interface    */
  78#define IF_IFACE_E1     0x1004          /* E1 telco serial interface    */
  79#define IF_IFACE_SYNC_SERIAL 0x1005     /* can't be set by software     */
  80#define IF_IFACE_X21D   0x1006          /* X.21 Dual Clocking (FarSite) */
  81
  82/* For definitions see hdlc.h */
  83#define IF_PROTO_HDLC   0x2000          /* raw HDLC protocol            */
  84#define IF_PROTO_PPP    0x2001          /* PPP protocol                 */
  85#define IF_PROTO_CISCO  0x2002          /* Cisco HDLC protocol          */
  86#define IF_PROTO_FR     0x2003          /* Frame Relay protocol         */
  87#define IF_PROTO_FR_ADD_PVC 0x2004      /*    Create FR PVC             */
  88#define IF_PROTO_FR_DEL_PVC 0x2005      /*    Delete FR PVC             */
  89#define IF_PROTO_X25    0x2006          /* X.25                         */
  90#define IF_PROTO_HDLC_ETH 0x2007        /* raw HDLC, Ethernet emulation */
  91#define IF_PROTO_FR_ADD_ETH_PVC 0x2008  /*  Create FR Ethernet-bridged PVC */
  92#define IF_PROTO_FR_DEL_ETH_PVC 0x2009  /*  Delete FR Ethernet-bridged PVC */
  93#define IF_PROTO_FR_PVC 0x200A          /* for reading PVC status       */
  94#define IF_PROTO_FR_ETH_PVC 0x200B
  95#define IF_PROTO_RAW    0x200C          /* RAW Socket                   */
  96
  97/* RFC 2863 operational status */
  98enum {
  99        IF_OPER_UNKNOWN,
 100        IF_OPER_NOTPRESENT,
 101        IF_OPER_DOWN,
 102        IF_OPER_LOWERLAYERDOWN,
 103        IF_OPER_TESTING,
 104        IF_OPER_DORMANT,
 105        IF_OPER_UP,
 106};
 107
 108/* link modes */
 109enum {
 110        IF_LINK_MODE_DEFAULT,
 111        IF_LINK_MODE_DORMANT,   /* limit upward transition to dormant */
 112};
 113
 114/*
 115 *      Device mapping structure. I'd just gone off and designed a 
 116 *      beautiful scheme using only loadable modules with arguments
 117 *      for driver options and along come the PCMCIA people 8)
 118 *
 119 *      Ah well. The get() side of this is good for WDSETUP, and it'll
 120 *      be handy for debugging things. The set side is fine for now and
 121 *      being very small might be worth keeping for clean configuration.
 122 */
 123
 124struct ifmap 
 125{
 126        unsigned long mem_start;
 127        unsigned long mem_end;
 128        unsigned short base_addr; 
 129        unsigned char irq;
 130        unsigned char dma;
 131        unsigned char port;
 132        /* 3 bytes spare */
 133};
 134
 135struct if_settings
 136{
 137        unsigned int type;      /* Type of physical device or protocol */
 138        unsigned int size;      /* Size of the data allocated by the caller */
 139        union {
 140                /* {atm/eth/dsl}_settings anyone ? */
 141                raw_hdlc_proto          __user *raw_hdlc;
 142                cisco_proto             __user *cisco;
 143                fr_proto                __user *fr;
 144                fr_proto_pvc            __user *fr_pvc;
 145                fr_proto_pvc_info       __user *fr_pvc_info;
 146
 147                /* interface settings */
 148                sync_serial_settings    __user *sync;
 149                te1_settings            __user *te1;
 150        } ifs_ifsu;
 151};
 152
 153/*
 154 * Interface request structure used for socket
 155 * ioctl's.  All interface ioctl's must have parameter
 156 * definitions which begin with ifr_name.  The
 157 * remainder may be interface specific.
 158 */
 159
 160struct ifreq 
 161{
 162#define IFHWADDRLEN     6
 163        union
 164        {
 165                char    ifrn_name[IFNAMSIZ];            /* if name, e.g. "en0" */
 166        } ifr_ifrn;
 167        
 168        union {
 169                struct  sockaddr ifru_addr;
 170                struct  sockaddr ifru_dstaddr;
 171                struct  sockaddr ifru_broadaddr;
 172                struct  sockaddr ifru_netmask;
 173                struct  sockaddr ifru_hwaddr;
 174                short   ifru_flags;
 175                int     ifru_ivalue;
 176                int     ifru_mtu;
 177                struct  ifmap ifru_map;
 178                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 179                char    ifru_newname[IFNAMSIZ];
 180                void __user *   ifru_data;
 181                struct  if_settings ifru_settings;
 182        } ifr_ifru;
 183};
 184
 185#define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
 186#define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
 187#define ifr_addr        ifr_ifru.ifru_addr      /* address              */
 188#define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
 189#define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
 190#define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
 191#define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
 192#define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
 193#define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
 194#define ifr_map         ifr_ifru.ifru_map       /* device map           */
 195#define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
 196#define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 197#define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
 198#define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
 199#define ifr_qlen        ifr_ifru.ifru_ivalue    /* Queue length         */
 200#define ifr_newname     ifr_ifru.ifru_newname   /* New name             */
 201#define ifr_settings    ifr_ifru.ifru_settings  /* Device/proto settings*/
 202
 203/*
 204 * Structure used in SIOCGIFCONF request.
 205 * Used to retrieve interface configuration
 206 * for machine (useful for programs which
 207 * must know all networks accessible).
 208 */
 209
 210struct ifconf 
 211{
 212        int     ifc_len;                        /* size of buffer       */
 213        union 
 214        {
 215                char __user *ifcu_buf;
 216                struct ifreq __user *ifcu_req;
 217        } ifc_ifcu;
 218};
 219#define ifc_buf ifc_ifcu.ifcu_buf               /* buffer address       */
 220#define ifc_req ifc_ifcu.ifcu_req               /* array of structures  */
 221
 222#endif /* _LINUX_IF_H */
 223
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