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#define IFF_WAN_HDLC    0x200           /* WAN HDLC device              */
  70#define IFF_XMIT_DST_RELEASE 0x400      /* dev_hard_start_xmit() is allowed to
  71                                         * release skb->dst
  72                                         */
  73#define IFF_DONT_BRIDGE 0x800           /* disallow bridging this ether dev */
  74#define IFF_DISABLE_NETPOLL     0x1000  /* disable netpoll at run-time */
  75#define IFF_MACVLAN_PORT        0x2000  /* device used as macvlan port */
  76#define IFF_BRIDGE_PORT 0x4000          /* device used as bridge port */
  77#define IFF_OVS_DATAPATH        0x8000  /* device used as Open vSwitch
  78                                         * datapath port */
  79#define IFF_TX_SKB_SHARING      0x10000 /* The interface supports sharing
  80                                         * skbs on transmit */
  81#define IFF_UNICAST_FLT 0x20000         /* Supports unicast filtering   */
  82#define IFF_TEAM_PORT   0x40000         /* device used as team port */
  83#define IFF_SUPP_NOFCS  0x80000         /* device supports sending custom FCS */
  84#define IFF_LIVE_ADDR_CHANGE 0x100000   /* device supports hardware address
  85                                         * change when it's running */
  86
  87
  88#define IF_GET_IFACE    0x0001          /* for querying only */
  89#define IF_GET_PROTO    0x0002
  90
  91/* For definitions see hdlc.h */
  92#define IF_IFACE_V35    0x1000          /* V.35 serial interface        */
  93#define IF_IFACE_V24    0x1001          /* V.24 serial interface        */
  94#define IF_IFACE_X21    0x1002          /* X.21 serial interface        */
  95#define IF_IFACE_T1     0x1003          /* T1 telco serial interface    */
  96#define IF_IFACE_E1     0x1004          /* E1 telco serial interface    */
  97#define IF_IFACE_SYNC_SERIAL 0x1005     /* can't be set by software     */
  98#define IF_IFACE_X21D   0x1006          /* X.21 Dual Clocking (FarSite) */
  99
 100/* For definitions see hdlc.h */
 101#define IF_PROTO_HDLC   0x2000          /* raw HDLC protocol            */
 102#define IF_PROTO_PPP    0x2001          /* PPP protocol                 */
 103#define IF_PROTO_CISCO  0x2002          /* Cisco HDLC protocol          */
 104#define IF_PROTO_FR     0x2003          /* Frame Relay protocol         */
 105#define IF_PROTO_FR_ADD_PVC 0x2004      /*    Create FR PVC             */
 106#define IF_PROTO_FR_DEL_PVC 0x2005      /*    Delete FR PVC             */
 107#define IF_PROTO_X25    0x2006          /* X.25                         */
 108#define IF_PROTO_HDLC_ETH 0x2007        /* raw HDLC, Ethernet emulation */
 109#define IF_PROTO_FR_ADD_ETH_PVC 0x2008  /*  Create FR Ethernet-bridged PVC */
 110#define IF_PROTO_FR_DEL_ETH_PVC 0x2009  /*  Delete FR Ethernet-bridged PVC */
 111#define IF_PROTO_FR_PVC 0x200A          /* for reading PVC status       */
 112#define IF_PROTO_FR_ETH_PVC 0x200B
 113#define IF_PROTO_RAW    0x200C          /* RAW Socket                   */
 114
 115/* RFC 2863 operational status */
 116enum {
 117        IF_OPER_UNKNOWN,
 118        IF_OPER_NOTPRESENT,
 119        IF_OPER_DOWN,
 120        IF_OPER_LOWERLAYERDOWN,
 121        IF_OPER_TESTING,
 122        IF_OPER_DORMANT,
 123        IF_OPER_UP,
 124};
 125
 126/* link modes */
 127enum {
 128        IF_LINK_MODE_DEFAULT,
 129        IF_LINK_MODE_DORMANT,   /* limit upward transition to dormant */
 130};
 131
 132/*
 133 *      Device mapping structure. I'd just gone off and designed a 
 134 *      beautiful scheme using only loadable modules with arguments
 135 *      for driver options and along come the PCMCIA people 8)
 136 *
 137 *      Ah well. The get() side of this is good for WDSETUP, and it'll
 138 *      be handy for debugging things. The set side is fine for now and
 139 *      being very small might be worth keeping for clean configuration.
 140 */
 141
 142struct ifmap {
 143        unsigned long mem_start;
 144        unsigned long mem_end;
 145        unsigned short base_addr; 
 146        unsigned char irq;
 147        unsigned char dma;
 148        unsigned char port;
 149        /* 3 bytes spare */
 150};
 151
 152struct if_settings {
 153        unsigned int type;      /* Type of physical device or protocol */
 154        unsigned int size;      /* Size of the data allocated by the caller */
 155        union {
 156                /* {atm/eth/dsl}_settings anyone ? */
 157                raw_hdlc_proto          __user *raw_hdlc;
 158                cisco_proto             __user *cisco;
 159                fr_proto                __user *fr;
 160                fr_proto_pvc            __user *fr_pvc;
 161                fr_proto_pvc_info       __user *fr_pvc_info;
 162
 163                /* interface settings */
 164                sync_serial_settings    __user *sync;
 165                te1_settings            __user *te1;
 166        } ifs_ifsu;
 167};
 168
 169/*
 170 * Interface request structure used for socket
 171 * ioctl's.  All interface ioctl's must have parameter
 172 * definitions which begin with ifr_name.  The
 173 * remainder may be interface specific.
 174 */
 175
 176struct ifreq {
 177#define IFHWADDRLEN     6
 178        union
 179        {
 180                char    ifrn_name[IFNAMSIZ];            /* if name, e.g. "en0" */
 181        } ifr_ifrn;
 182        
 183        union {
 184                struct  sockaddr ifru_addr;
 185                struct  sockaddr ifru_dstaddr;
 186                struct  sockaddr ifru_broadaddr;
 187                struct  sockaddr ifru_netmask;
 188                struct  sockaddr ifru_hwaddr;
 189                short   ifru_flags;
 190                int     ifru_ivalue;
 191                int     ifru_mtu;
 192                struct  ifmap ifru_map;
 193                char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 194                char    ifru_newname[IFNAMSIZ];
 195                void __user *   ifru_data;
 196                struct  if_settings ifru_settings;
 197        } ifr_ifru;
 198};
 199
 200#define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
 201#define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
 202#define ifr_addr        ifr_ifru.ifru_addr      /* address              */
 203#define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
 204#define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
 205#define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
 206#define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
 207#define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
 208#define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
 209#define ifr_map         ifr_ifru.ifru_map       /* device map           */
 210#define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
 211#define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 212#define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
 213#define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
 214#define ifr_qlen        ifr_ifru.ifru_ivalue    /* Queue length         */
 215#define ifr_newname     ifr_ifru.ifru_newname   /* New name             */
 216#define ifr_settings    ifr_ifru.ifru_settings  /* Device/proto settings*/
 217
 218/*
 219 * Structure used in SIOCGIFCONF request.
 220 * Used to retrieve interface configuration
 221 * for machine (useful for programs which
 222 * must know all networks accessible).
 223 */
 224
 225struct ifconf  {
 226        int     ifc_len;                        /* size of buffer       */
 227        union {
 228                char __user *ifcu_buf;
 229                struct ifreq __user *ifcu_req;
 230        } ifc_ifcu;
 231};
 232#define ifc_buf ifc_ifcu.ifcu_buf               /* buffer address       */
 233#define ifc_req ifc_ifcu.ifcu_req               /* array of structures  */
 234
 235#endif /* _LINUX_IF_H */
 236
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