include/uapi/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/libc-compat.h>          /* for compatibility with glibc */
  23 #include <linux/types.h>                /* for "__kernel_caddr_t" et al */
  24 #include <linux/socket.h>               /* for "struct sockaddr" et al  */
  25 #include <linux/compiler.h>             /* for "__user" et al           */
  26
  27 #if __UAPI_DEF_IF_IFNAMSIZ
  28 #define IFNAMSIZ        16
  29 #endif /* __UAPI_DEF_IF_IFNAMSIZ */
  30 #define IFALIASZ        256
  31 #include <linux/hdlc/ioctl.h>
  32
  33 /* For glibc compatibility. An empty enum does not compile. */
  34 #if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 && \
  35     __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0
  36 /**
  37  * enum net_device_flags - &struct net_device flags
  38  *
  39  * These are the &struct net_device flags, they can be set by drivers, the
  40  * kernel and some can be triggered by userspace. Userspace can query and
  41  * set these flags using userspace utilities but there is also a sysfs
  42  * entry available for all dev flags which can be queried and set. These flags
  43  * are shared for all types of net_devices. The sysfs entries are available
  44  * via /sys/class/net/<dev>/flags. Flags which can be toggled through sysfs
  45  * are annotated below, note that only a few flags can be toggled and some
  46  * other flags are always preserved from the original net_device flags
  47  * even if you try to set them via sysfs. Flags which are always preserved
  48  * are kept under the flag grouping @IFF_VOLATILE. Flags which are volatile
  49  * are annotated below as such.
  50  *
  51  * You should have a pretty good reason to be extending these flags.
  52  *
  53  * @IFF_UP: interface is up. Can be toggled through sysfs.
  54  * @IFF_BROADCAST: broadcast address valid. Volatile.
  55  * @IFF_DEBUG: turn on debugging. Can be toggled through sysfs.
  56  * @IFF_LOOPBACK: is a loopback net. Volatile.
  57  * @IFF_POINTOPOINT: interface is has p-p link. Volatile.
  58  * @IFF_NOTRAILERS: avoid use of trailers. Can be toggled through sysfs.
  59  *      Volatile.
  60  * @IFF_RUNNING: interface RFC2863 OPER_UP. Volatile.
  61  * @IFF_NOARP: no ARP protocol. Can be toggled through sysfs. Volatile.
  62  * @IFF_PROMISC: receive all packets. Can be toggled through sysfs.
  63  * @IFF_ALLMULTI: receive all multicast packets. Can be toggled through
  64  *      sysfs.
  65  * @IFF_MASTER: master of a load balancer. Volatile.
  66  * @IFF_SLAVE: slave of a load balancer. Volatile.
  67  * @IFF_MULTICAST: Supports multicast. Can be toggled through sysfs.
  68  * @IFF_PORTSEL: can set media type. Can be toggled through sysfs.
  69  * @IFF_AUTOMEDIA: auto media select active. Can be toggled through sysfs.
  70  * @IFF_DYNAMIC: dialup device with changing addresses. Can be toggled
  71  *      through sysfs.
  72  * @IFF_LOWER_UP: driver signals L1 up. Volatile.
  73  * @IFF_DORMANT: driver signals dormant. Volatile.
  74  * @IFF_ECHO: echo sent packets. Volatile.
  75  */
  76 enum net_device_flags {
  77 /* for compatibility with glibc net/if.h */
  78 #if __UAPI_DEF_IF_NET_DEVICE_FLAGS
  79         IFF_UP                          = 1<<0,  /* sysfs */
  80         IFF_BROADCAST                   = 1<<1,  /* volatile */
  81         IFF_DEBUG                       = 1<<2,  /* sysfs */
  82         IFF_LOOPBACK                    = 1<<3,  /* volatile */
  83         IFF_POINTOPOINT                 = 1<<4,  /* volatile */
  84         IFF_NOTRAILERS                  = 1<<5,  /* sysfs */
  85         IFF_RUNNING                     = 1<<6,  /* volatile */
  86         IFF_NOARP                       = 1<<7,  /* sysfs */
  87         IFF_PROMISC                     = 1<<8,  /* sysfs */
  88         IFF_ALLMULTI                    = 1<<9,  /* sysfs */
  89         IFF_MASTER                      = 1<<10, /* volatile */
  90         IFF_SLAVE                       = 1<<11, /* volatile */
  91         IFF_MULTICAST                   = 1<<12, /* sysfs */
  92         IFF_PORTSEL                     = 1<<13, /* sysfs */
  93         IFF_AUTOMEDIA                   = 1<<14, /* sysfs */
  94         IFF_DYNAMIC                     = 1<<15, /* sysfs */
  95 #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
  96 #if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
  97         IFF_LOWER_UP                    = 1<<16, /* volatile */
  98         IFF_DORMANT                     = 1<<17, /* volatile */
  99         IFF_ECHO                        = 1<<18, /* volatile */
 100 #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
 101 };
 102 #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 && __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0 */
 103
 104 /* for compatibility with glibc net/if.h */
 105 #if __UAPI_DEF_IF_NET_DEVICE_FLAGS
 106 #define IFF_UP                          IFF_UP
 107 #define IFF_BROADCAST                   IFF_BROADCAST
 108 #define IFF_DEBUG                       IFF_DEBUG
 109 #define IFF_LOOPBACK                    IFF_LOOPBACK
 110 #define IFF_POINTOPOINT                 IFF_POINTOPOINT
 111 #define IFF_NOTRAILERS                  IFF_NOTRAILERS
 112 #define IFF_RUNNING                     IFF_RUNNING
 113 #define IFF_NOARP                       IFF_NOARP
 114 #define IFF_PROMISC                     IFF_PROMISC
 115 #define IFF_ALLMULTI                    IFF_ALLMULTI
 116 #define IFF_MASTER                      IFF_MASTER
 117 #define IFF_SLAVE                       IFF_SLAVE
 118 #define IFF_MULTICAST                   IFF_MULTICAST
 119 #define IFF_PORTSEL                     IFF_PORTSEL
 120 #define IFF_AUTOMEDIA                   IFF_AUTOMEDIA
 121 #define IFF_DYNAMIC                     IFF_DYNAMIC
 122 #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
 123
 124 #if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
 125 #define IFF_LOWER_UP                    IFF_LOWER_UP
 126 #define IFF_DORMANT                     IFF_DORMANT
 127 #define IFF_ECHO                        IFF_ECHO
 128 #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
 129
 130 #define IFF_VOLATILE    (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
 131                 IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
 132
 133 #define IF_GET_IFACE    0x0001          /* for querying only */
 134 #define IF_GET_PROTO    0x0002
 135
 136 /* For definitions see hdlc.h */
 137 #define IF_IFACE_V35    0x1000          /* V.35 serial interface        */
 138 #define IF_IFACE_V24    0x1001          /* V.24 serial interface        */
 139 #define IF_IFACE_X21    0x1002          /* X.21 serial interface        */
 140 #define IF_IFACE_T1     0x1003          /* T1 telco serial interface    */
 141 #define IF_IFACE_E1     0x1004          /* E1 telco serial interface    */
 142 #define IF_IFACE_SYNC_SERIAL 0x1005     /* can't be set by software     */
 143 #define IF_IFACE_X21D   0x1006          /* X.21 Dual Clocking (FarSite) */
 144
 145 /* For definitions see hdlc.h */
 146 #define IF_PROTO_HDLC   0x2000          /* raw HDLC protocol            */
 147 #define IF_PROTO_PPP    0x2001          /* PPP protocol                 */
 148 #define IF_PROTO_CISCO  0x2002          /* Cisco HDLC protocol          */
 149 #define IF_PROTO_FR     0x2003          /* Frame Relay protocol         */
 150 #define IF_PROTO_FR_ADD_PVC 0x2004      /*    Create FR PVC             */
 151 #define IF_PROTO_FR_DEL_PVC 0x2005      /*    Delete FR PVC             */
 152 #define IF_PROTO_X25    0x2006          /* X.25                         */
 153 #define IF_PROTO_HDLC_ETH 0x2007        /* raw HDLC, Ethernet emulation */
 154 #define IF_PROTO_FR_ADD_ETH_PVC 0x2008  /*  Create FR Ethernet-bridged PVC */
 155 #define IF_PROTO_FR_DEL_ETH_PVC 0x2009  /*  Delete FR Ethernet-bridged PVC */
 156 #define IF_PROTO_FR_PVC 0x200A          /* for reading PVC status       */
 157 #define IF_PROTO_FR_ETH_PVC 0x200B
 158 #define IF_PROTO_RAW    0x200C          /* RAW Socket                   */
 159
 160 /* RFC 2863 operational status */
 161 enum {
 162         IF_OPER_UNKNOWN,
 163         IF_OPER_NOTPRESENT,
 164         IF_OPER_DOWN,
 165         IF_OPER_LOWERLAYERDOWN,
 166         IF_OPER_TESTING,
 167         IF_OPER_DORMANT,
 168         IF_OPER_UP,
 169 };
 170
 171 /* link modes */
 172 enum {
 173         IF_LINK_MODE_DEFAULT,
 174         IF_LINK_MODE_DORMANT,   /* limit upward transition to dormant */
 175 };
 176
 177 /*
 178  *      Device mapping structure. I'd just gone off and designed a
 179  *      beautiful scheme using only loadable modules with arguments
 180  *      for driver options and along come the PCMCIA people 8)
 181  *
 182  *      Ah well. The get() side of this is good for WDSETUP, and it'll
 183  *      be handy for debugging things. The set side is fine for now and
 184  *      being very small might be worth keeping for clean configuration.
 185  */
 186
 187 /* for compatibility with glibc net/if.h */
 188 #if __UAPI_DEF_IF_IFMAP
 189 struct ifmap {
 190         unsigned long mem_start;
 191         unsigned long mem_end;
 192         unsigned short base_addr;
 193         unsigned char irq;
 194         unsigned char dma;
 195         unsigned char port;
 196         /* 3 bytes spare */
 197 };
 198 #endif /* __UAPI_DEF_IF_IFMAP */
 199
 200 struct if_settings {
 201         unsigned int type;      /* Type of physical device or protocol */
 202         unsigned int size;      /* Size of the data allocated by the caller */
 203         union {
 204                 /* {atm/eth/dsl}_settings anyone ? */
 205                 raw_hdlc_proto          __user *raw_hdlc;
 206                 cisco_proto             __user *cisco;
 207                 fr_proto                __user *fr;
 208                 fr_proto_pvc            __user *fr_pvc;
 209                 fr_proto_pvc_info       __user *fr_pvc_info;
 210
 211                 /* interface settings */
 212                 sync_serial_settings    __user *sync;
 213                 te1_settings            __user *te1;
 214         } ifs_ifsu;
 215 };
 216
 217 /*
 218  * Interface request structure used for socket
 219  * ioctl's.  All interface ioctl's must have parameter
 220  * definitions which begin with ifr_name.  The
 221  * remainder may be interface specific.
 222  */
 223
 224 /* for compatibility with glibc net/if.h */
 225 #if __UAPI_DEF_IF_IFREQ
 226 struct ifreq {
 227 #define IFHWADDRLEN     6
 228         union
 229         {
 230                 char    ifrn_name[IFNAMSIZ];            /* if name, e.g. "en0" */
 231         } ifr_ifrn;
 232
 233         union {
 234                 struct  sockaddr ifru_addr;
 235                 struct  sockaddr ifru_dstaddr;
 236                 struct  sockaddr ifru_broadaddr;
 237                 struct  sockaddr ifru_netmask;
 238                 struct  sockaddr ifru_hwaddr;
 239                 short   ifru_flags;
 240                 int     ifru_ivalue;
 241                 int     ifru_mtu;
 242                 struct  ifmap ifru_map;
 243                 char    ifru_slave[IFNAMSIZ];   /* Just fits the size */
 244                 char    ifru_newname[IFNAMSIZ];
 245                 void __user *   ifru_data;
 246                 struct  if_settings ifru_settings;
 247         } ifr_ifru;
 248 };
 249 #endif /* __UAPI_DEF_IF_IFREQ */
 250
 251 #define ifr_name        ifr_ifrn.ifrn_name      /* interface name       */
 252 #define ifr_hwaddr      ifr_ifru.ifru_hwaddr    /* MAC address          */
 253 #define ifr_addr        ifr_ifru.ifru_addr      /* address              */
 254 #define ifr_dstaddr     ifr_ifru.ifru_dstaddr   /* other end of p-p lnk */
 255 #define ifr_broadaddr   ifr_ifru.ifru_broadaddr /* broadcast address    */
 256 #define ifr_netmask     ifr_ifru.ifru_netmask   /* interface net mask   */
 257 #define ifr_flags       ifr_ifru.ifru_flags     /* flags                */
 258 #define ifr_metric      ifr_ifru.ifru_ivalue    /* metric               */
 259 #define ifr_mtu         ifr_ifru.ifru_mtu       /* mtu                  */
 260 #define ifr_map         ifr_ifru.ifru_map       /* device map           */
 261 #define ifr_slave       ifr_ifru.ifru_slave     /* slave device         */
 262 #define ifr_data        ifr_ifru.ifru_data      /* for use by interface */
 263 #define ifr_ifindex     ifr_ifru.ifru_ivalue    /* interface index      */
 264 #define ifr_bandwidth   ifr_ifru.ifru_ivalue    /* link bandwidth       */
 265 #define ifr_qlen        ifr_ifru.ifru_ivalue    /* Queue length         */
 266 #define ifr_newname     ifr_ifru.ifru_newname   /* New name             */
 267 #define ifr_settings    ifr_ifru.ifru_settings  /* Device/proto settings*/
 268
 269 /*
 270  * Structure used in SIOCGIFCONF request.
 271  * Used to retrieve interface configuration
 272  * for machine (useful for programs which
 273  * must know all networks accessible).
 274  */
 275
 276 /* for compatibility with glibc net/if.h */
 277 #if __UAPI_DEF_IF_IFCONF
 278 struct ifconf  {
 279         int     ifc_len;                        /* size of buffer       */
 280         union {
 281                 char __user *ifcu_buf;
 282                 struct ifreq __user *ifcu_req;
 283         } ifc_ifcu;
 284 };
 285 #endif /* __UAPI_DEF_IF_IFCONF */
 286
 287 #define ifc_buf ifc_ifcu.ifcu_buf               /* buffer address       */
 288 #define ifc_req ifc_ifcu.ifcu_req               /* array of structures  */
 289
 290 #endif /* _LINUX_IF_H */