Quelle if.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system.  INET is implemented using the  BSD Socket
* interface as the means of communication with the user level.
*
* Global definitions for the INET interface module.
*
* Version: @(#)if.h 1.0.2 04/18/93
*
* Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
* Ross Biro
* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_IF_H
#define _LINUX_IF_H

#include <linux/libc-compat.h>          /* for compatibility with glibc */
#include <linux/types.h>  /* for "__kernel_caddr_t" et al */
#include <linux/socket.h>  /* for "struct sockaddr" et al */
#include <linux/compiler.h>  /* for "__user" et al           */

#ifndef __KERNEL__
#include <sys/socket.h>   /* for struct sockaddr. */
#endif

#if __UAPI_DEF_IF_IFNAMSIZ
#define IFNAMSIZ 16
#endif /* __UAPI_DEF_IF_IFNAMSIZ */
#define IFALIASZ 256
#define ALTIFNAMSIZ 128
#include <linux/hdlc/ioctl.h>

/* For glibc compatibility. An empty enum does not compile. */
#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 || \
    __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0
/**
* enum net_device_flags - &struct net_device flags
*
* These are the &struct net_device flags, they can be set by drivers, the
* kernel and some can be triggered by userspace. Userspace can query and
* set these flags using userspace utilities but there is also a sysfs
* entry available for all dev flags which can be queried and set. These flags
* are shared for all types of net_devices. The sysfs entries are available
* via /sys/class/net/<dev>/flags. Flags which can be toggled through sysfs
* are annotated below, note that only a few flags can be toggled and some
* other flags are always preserved from the original net_device flags
* even if you try to set them via sysfs. Flags which are always preserved
* are kept under the flag grouping @IFF_VOLATILE. Flags which are volatile
* are annotated below as such.
*
* You should have a pretty good reason to be extending these flags.
*
* @IFF_UP: interface is up. Can be toggled through sysfs.
* @IFF_BROADCAST: broadcast address valid. Volatile.
* @IFF_DEBUG: turn on debugging. Can be toggled through sysfs.
* @IFF_LOOPBACK: is a loopback net. Volatile.
* @IFF_POINTOPOINT: interface is has p-p link. Volatile.
* @IFF_NOTRAILERS: avoid use of trailers. Can be toggled through sysfs.
* Volatile.
* @IFF_RUNNING: interface RFC2863 OPER_UP. Volatile.
* @IFF_NOARP: no ARP protocol. Can be toggled through sysfs. Volatile.
* @IFF_PROMISC: receive all packets. Can be toggled through sysfs.
* @IFF_ALLMULTI: receive all multicast packets. Can be toggled through
* sysfs.
* @IFF_MASTER: master of a load balancer. Volatile.
* @IFF_SLAVE: slave of a load balancer. Volatile.
* @IFF_MULTICAST: Supports multicast. Can be toggled through sysfs.
* @IFF_PORTSEL: can set media type. Can be toggled through sysfs.
* @IFF_AUTOMEDIA: auto media select active. Can be toggled through sysfs.
* @IFF_DYNAMIC: dialup device with changing addresses. Can be toggled
* through sysfs.
* @IFF_LOWER_UP: driver signals L1 up. Volatile.
* @IFF_DORMANT: driver signals dormant. Volatile.
* @IFF_ECHO: echo sent packets. Volatile.
*/
enum net_device_flags {
/* for compatibility with glibc net/if.h */
#if __UAPI_DEF_IF_NET_DEVICE_FLAGS
IFF_UP    = 1<<0,  /* sysfs */
IFF_BROADCAST   = 1<<1,  /* volatile */
IFF_DEBUG   = 1<<2,  /* sysfs */
IFF_LOOPBACK   = 1<<3,  /* volatile */
IFF_POINTOPOINT   = 1<<4,  /* volatile */
IFF_NOTRAILERS   = 1<<5,  /* sysfs */
IFF_RUNNING   = 1<<6,  /* volatile */
IFF_NOARP   = 1<<7,  /* sysfs */
IFF_PROMISC   = 1<<8,  /* sysfs */
IFF_ALLMULTI   = 1<<9,  /* sysfs */
IFF_MASTER   = 1<<10, /* volatile */
IFF_SLAVE   = 1<<11, /* volatile */
IFF_MULTICAST   = 1<<12, /* sysfs */
IFF_PORTSEL   = 1<<13, /* sysfs */
IFF_AUTOMEDIA   = 1<<14, /* sysfs */
IFF_DYNAMIC   = 1<<15, /* sysfs */
#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
IFF_LOWER_UP   = 1<<16, /* volatile */
IFF_DORMANT   = 1<<17, /* volatile */
IFF_ECHO   = 1<<18, /* volatile */
#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
};
#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 || __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0 */

/* for compatibility with glibc net/if.h */
#if __UAPI_DEF_IF_NET_DEVICE_FLAGS
#define IFF_UP    IFF_UP
#define IFF_BROADCAST   IFF_BROADCAST
#define IFF_DEBUG   IFF_DEBUG
#define IFF_LOOPBACK   IFF_LOOPBACK
#define IFF_POINTOPOINT   IFF_POINTOPOINT
#define IFF_NOTRAILERS   IFF_NOTRAILERS
#define IFF_RUNNING   IFF_RUNNING
#define IFF_NOARP   IFF_NOARP
#define IFF_PROMISC   IFF_PROMISC
#define IFF_ALLMULTI   IFF_ALLMULTI
#define IFF_MASTER   IFF_MASTER
#define IFF_SLAVE   IFF_SLAVE
#define IFF_MULTICAST   IFF_MULTICAST
#define IFF_PORTSEL   IFF_PORTSEL
#define IFF_AUTOMEDIA   IFF_AUTOMEDIA
#define IFF_DYNAMIC   IFF_DYNAMIC
#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */

#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
#define IFF_LOWER_UP   IFF_LOWER_UP
#define IFF_DORMANT   IFF_DORMANT
#define IFF_ECHO   IFF_ECHO
#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */

#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
  IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)

#define IF_GET_IFACE 0x0001  /* for querying only */
#define IF_GET_PROTO 0x0002

/* For definitions see hdlc.h */
#define IF_IFACE_V35 0x1000  /* V.35 serial interface */
#define IF_IFACE_V24 0x1001  /* V.24 serial interface */
#define IF_IFACE_X21 0x1002  /* X.21 serial interface */
#define IF_IFACE_T1 0x1003  /* T1 telco serial interface */
#define IF_IFACE_E1 0x1004  /* E1 telco serial interface */
#define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */
#define IF_IFACE_X21D   0x1006          /* X.21 Dual Clocking (FarSite) */

/* For definitions see hdlc.h */
#define IF_PROTO_HDLC 0x2000  /* raw HDLC protocol */
#define IF_PROTO_PPP 0x2001  /* PPP protocol */
#define IF_PROTO_CISCO 0x2002  /* Cisco HDLC protocol */
#define IF_PROTO_FR 0x2003  /* Frame Relay protocol */
#define IF_PROTO_FR_ADD_PVC 0x2004 /*    Create FR PVC */
#define IF_PROTO_FR_DEL_PVC 0x2005 /*    Delete FR PVC */
#define IF_PROTO_X25 0x2006  /* X.25 */
#define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */
#define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /*  Create FR Ethernet-bridged PVC */
#define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /*  Delete FR Ethernet-bridged PVC */
#define IF_PROTO_FR_PVC 0x200A  /* for reading PVC status */
#define IF_PROTO_FR_ETH_PVC 0x200B
#define IF_PROTO_RAW    0x200C          /* RAW Socket                   */

/* RFC 2863 operational status */
enum {
IF_OPER_UNKNOWN,
IF_OPER_NOTPRESENT,
IF_OPER_DOWN,
IF_OPER_LOWERLAYERDOWN,
IF_OPER_TESTING,
IF_OPER_DORMANT,
IF_OPER_UP,
};

/* link modes */
enum {
IF_LINK_MODE_DEFAULT,
IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
IF_LINK_MODE_TESTING, /* limit upward transition to testing */
};

/*
* Device mapping structure. I'd just gone off and designed a
* beautiful scheme using only loadable modules with arguments
* for driver options and along come the PCMCIA people 8)
*
* Ah well. The get() side of this is good for WDSETUP, and it'll
* be handy for debugging things. The set side is fine for now and
* being very small might be worth keeping for clean configuration.
*/

/* for compatibility with glibc net/if.h */
#if __UAPI_DEF_IF_IFMAP
struct ifmap {
unsigned long mem_start;
unsigned long mem_end;
unsigned short base_addr;
unsigned char irq;
unsigned char dma;
unsigned char port;
/* 3 bytes spare */
};
#endif /* __UAPI_DEF_IF_IFMAP */

struct if_settings {
unsigned int type; /* Type of physical device or protocol */
unsigned int size; /* Size of the data allocated by the caller */
union {
  /* {atm/eth/dsl}_settings anyone ? */
  raw_hdlc_proto  __user *raw_hdlc;
  cisco_proto  __user *cisco;
  fr_proto  __user *fr;
  fr_proto_pvc  __user *fr_pvc;
  fr_proto_pvc_info __user *fr_pvc_info;
  x25_hdlc_proto  __user *x25;

  /* interface settings */
  sync_serial_settings __user *sync;
  te1_settings  __user *te1;
} ifs_ifsu;
};

/*
* Interface request structure used for socket
* ioctl's.  All interface ioctl's must have parameter
* definitions which begin with ifr_name.  The
* remainder may be interface specific.
*/

/* for compatibility with glibc net/if.h */
#if __UAPI_DEF_IF_IFREQ
struct ifreq {
#define IFHWADDRLEN 6
union
{
  char ifrn_name[IFNAMSIZ];  /* if name, e.g. "en0" */
} ifr_ifrn;

union {
  struct sockaddr ifru_addr;
  struct sockaddr ifru_dstaddr;
  struct sockaddr ifru_broadaddr;
  struct sockaddr ifru_netmask;
  struct  sockaddr ifru_hwaddr;
  short ifru_flags;
  int ifru_ivalue;
  int ifru_mtu;
  struct  ifmap ifru_map;
  char ifru_slave[IFNAMSIZ]; /* Just fits the size */
  char ifru_newname[IFNAMSIZ];
  void __user * ifru_data;
  struct if_settings ifru_settings;
} ifr_ifru;
};
#endif /* __UAPI_DEF_IF_IFREQ */

#define ifr_name ifr_ifrn.ifrn_name /* interface name */
#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
#define ifr_addr ifr_ifru.ifru_addr /* address */
#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
#define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
#define ifr_flags ifr_ifru.ifru_flags /* flags */
#define ifr_metric ifr_ifru.ifru_ivalue /* metric */
#define ifr_mtu  ifr_ifru.ifru_mtu /* mtu */
#define ifr_map  ifr_ifru.ifru_map /* device map */
#define ifr_slave ifr_ifru.ifru_slave /* slave device */
#define ifr_data ifr_ifru.ifru_data /* for use by interface */
#define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
#define ifr_bandwidth ifr_ifru.ifru_ivalue    /* link bandwidth */
#define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */
#define ifr_newname ifr_ifru.ifru_newname /* New name */
#define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/

/*
* Structure used in SIOCGIFCONF request.
* Used to retrieve interface configuration
* for machine (useful for programs which
* must know all networks accessible).
*/

/* for compatibility with glibc net/if.h */
#if __UAPI_DEF_IF_IFCONF
struct ifconf  {
int ifc_len;   /* size of buffer */
union {
  char __user *ifcu_buf;
  struct ifreq __user *ifcu_req;
} ifc_ifcu;
};
#endif /* __UAPI_DEF_IF_IFCONF */

#define ifc_buf ifc_ifcu.ifcu_buf  /* buffer address */
#define ifc_req ifc_ifcu.ifcu_req  /* array of structures */

#endif /* _LINUX_IF_H */

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