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