/* 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 0 x0001 /* for querying only */
#define IF_GET_PROTO 0 x0002
/* For definitions see hdlc.h */
#define IF_IFACE_V35 0 x1000 /* V.35 serial interface */
#define IF_IFACE_V24 0 x1001 /* V.24 serial interface */
#define IF_IFACE_X21 0 x1002 /* X.21 serial interface */
#define IF_IFACE_T1 0 x1003 /* T1 telco serial interface */
#define IF_IFACE_E1 0 x1004 /* E1 telco serial interface */
#define IF_IFACE_SYNC_SERIAL 0 x1005 /* can't be set by software */
#define IF_IFACE_X21D 0 x1006 /* X.21 Dual Clocking (FarSite) */
/* For definitions see hdlc.h */
#define IF_PROTO_HDLC 0 x2000 /* raw HDLC protocol */
#define IF_PROTO_PPP 0 x2001 /* PPP protocol */
#define IF_PROTO_CISCO 0 x2002 /* Cisco HDLC protocol */
#define IF_PROTO_FR 0 x2003 /* Frame Relay protocol */
#define IF_PROTO_FR_ADD_PVC 0 x2004 /* Create FR PVC */
#define IF_PROTO_FR_DEL_PVC 0 x2005 /* Delete FR PVC */
#define IF_PROTO_X25 0 x2006 /* X.25 */
#define IF_PROTO_HDLC_ETH 0 x2007 /* raw HDLC, Ethernet emulation */
#define IF_PROTO_FR_ADD_ETH_PVC 0 x2008 /* Create FR Ethernet-bridged PVC */
#define IF_PROTO_FR_DEL_ETH_PVC 0 x2009 /* Delete FR Ethernet-bridged PVC */
#define IF_PROTO_FR_PVC 0 x200A /* for reading PVC status */
#define IF_PROTO_FR_ETH_PVC 0 x200B
#define IF_PROTO_RAW 0 x200C /* 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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