296 lines
11 KiB
C
296 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Global definitions for the INET interface module.
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*
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* Version: @(#)if.h 1.0.2 04/18/93
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*
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* Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
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* Ross Biro
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_IF_H
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#define _LINUX_IF_H
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#include <linux/libc-compat.h> /* for compatibility with glibc */
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#include <linux/types.h> /* for "__kernel_caddr_t" et al */
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#include <linux/socket.h> /* for "struct sockaddr" et al */
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#include <linux/compiler.h> /* for "__user" et al */
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#ifndef __KERNEL__
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#include <sys/socket.h> /* for struct sockaddr. */
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#endif
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#if __UAPI_DEF_IF_IFNAMSIZ
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#define IFNAMSIZ 16
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#endif /* __UAPI_DEF_IF_IFNAMSIZ */
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#define IFALIASZ 256
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#include <linux/hdlc/ioctl.h>
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/* For glibc compatibility. An empty enum does not compile. */
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#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 || \
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__UAPI_DEF_IF_NET_DEVICE_FLAGS != 0
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/**
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* enum net_device_flags - &struct net_device flags
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*
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* These are the &struct net_device flags, they can be set by drivers, the
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* kernel and some can be triggered by userspace. Userspace can query and
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* set these flags using userspace utilities but there is also a sysfs
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* entry available for all dev flags which can be queried and set. These flags
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* are shared for all types of net_devices. The sysfs entries are available
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* via /sys/class/net/<dev>/flags. Flags which can be toggled through sysfs
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* are annotated below, note that only a few flags can be toggled and some
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* other flags are always preserved from the original net_device flags
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* even if you try to set them via sysfs. Flags which are always preserved
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* are kept under the flag grouping @IFF_VOLATILE. Flags which are volatile
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* are annotated below as such.
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*
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* You should have a pretty good reason to be extending these flags.
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*
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* @IFF_UP: interface is up. Can be toggled through sysfs.
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* @IFF_BROADCAST: broadcast address valid. Volatile.
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* @IFF_DEBUG: turn on debugging. Can be toggled through sysfs.
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* @IFF_LOOPBACK: is a loopback net. Volatile.
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* @IFF_POINTOPOINT: interface is has p-p link. Volatile.
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* @IFF_NOTRAILERS: avoid use of trailers. Can be toggled through sysfs.
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* Volatile.
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* @IFF_RUNNING: interface RFC2863 OPER_UP. Volatile.
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* @IFF_NOARP: no ARP protocol. Can be toggled through sysfs. Volatile.
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* @IFF_PROMISC: receive all packets. Can be toggled through sysfs.
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* @IFF_ALLMULTI: receive all multicast packets. Can be toggled through
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* sysfs.
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* @IFF_MASTER: master of a load balancer. Volatile.
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* @IFF_SLAVE: slave of a load balancer. Volatile.
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* @IFF_MULTICAST: Supports multicast. Can be toggled through sysfs.
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* @IFF_PORTSEL: can set media type. Can be toggled through sysfs.
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* @IFF_AUTOMEDIA: auto media select active. Can be toggled through sysfs.
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* @IFF_DYNAMIC: dialup device with changing addresses. Can be toggled
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* through sysfs.
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* @IFF_LOWER_UP: driver signals L1 up. Volatile.
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* @IFF_DORMANT: driver signals dormant. Volatile.
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* @IFF_ECHO: echo sent packets. Volatile.
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*/
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enum net_device_flags {
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/* for compatibility with glibc net/if.h */
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#if __UAPI_DEF_IF_NET_DEVICE_FLAGS
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IFF_UP = 1<<0, /* sysfs */
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IFF_BROADCAST = 1<<1, /* volatile */
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IFF_DEBUG = 1<<2, /* sysfs */
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IFF_LOOPBACK = 1<<3, /* volatile */
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IFF_POINTOPOINT = 1<<4, /* volatile */
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IFF_NOTRAILERS = 1<<5, /* sysfs */
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IFF_RUNNING = 1<<6, /* volatile */
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IFF_NOARP = 1<<7, /* sysfs */
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IFF_PROMISC = 1<<8, /* sysfs */
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IFF_ALLMULTI = 1<<9, /* sysfs */
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IFF_MASTER = 1<<10, /* volatile */
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IFF_SLAVE = 1<<11, /* volatile */
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IFF_MULTICAST = 1<<12, /* sysfs */
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IFF_PORTSEL = 1<<13, /* sysfs */
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IFF_AUTOMEDIA = 1<<14, /* sysfs */
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IFF_DYNAMIC = 1<<15, /* sysfs */
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#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
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#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
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IFF_LOWER_UP = 1<<16, /* volatile */
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IFF_DORMANT = 1<<17, /* volatile */
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IFF_ECHO = 1<<18, /* volatile */
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#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
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};
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#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 || __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0 */
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/* for compatibility with glibc net/if.h */
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#if __UAPI_DEF_IF_NET_DEVICE_FLAGS
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#define IFF_UP IFF_UP
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#define IFF_BROADCAST IFF_BROADCAST
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#define IFF_DEBUG IFF_DEBUG
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#define IFF_LOOPBACK IFF_LOOPBACK
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#define IFF_POINTOPOINT IFF_POINTOPOINT
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#define IFF_NOTRAILERS IFF_NOTRAILERS
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#define IFF_RUNNING IFF_RUNNING
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#define IFF_NOARP IFF_NOARP
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#define IFF_PROMISC IFF_PROMISC
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#define IFF_ALLMULTI IFF_ALLMULTI
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#define IFF_MASTER IFF_MASTER
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#define IFF_SLAVE IFF_SLAVE
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#define IFF_MULTICAST IFF_MULTICAST
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#define IFF_PORTSEL IFF_PORTSEL
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#define IFF_AUTOMEDIA IFF_AUTOMEDIA
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#define IFF_DYNAMIC IFF_DYNAMIC
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#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
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#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
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#define IFF_LOWER_UP IFF_LOWER_UP
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#define IFF_DORMANT IFF_DORMANT
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#define IFF_ECHO IFF_ECHO
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#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
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#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
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IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
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#define IF_GET_IFACE 0x0001 /* for querying only */
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#define IF_GET_PROTO 0x0002
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/* For definitions see hdlc.h */
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#define IF_IFACE_V35 0x1000 /* V.35 serial interface */
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#define IF_IFACE_V24 0x1001 /* V.24 serial interface */
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#define IF_IFACE_X21 0x1002 /* X.21 serial interface */
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#define IF_IFACE_T1 0x1003 /* T1 telco serial interface */
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#define IF_IFACE_E1 0x1004 /* E1 telco serial interface */
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#define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */
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#define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */
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/* For definitions see hdlc.h */
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#define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */
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#define IF_PROTO_PPP 0x2001 /* PPP protocol */
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#define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */
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#define IF_PROTO_FR 0x2003 /* Frame Relay protocol */
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#define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */
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#define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */
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#define IF_PROTO_X25 0x2006 /* X.25 */
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#define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */
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#define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */
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#define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */
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#define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */
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#define IF_PROTO_FR_ETH_PVC 0x200B
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#define IF_PROTO_RAW 0x200C /* RAW Socket */
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/* RFC 2863 operational status */
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enum {
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IF_OPER_UNKNOWN,
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IF_OPER_NOTPRESENT,
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IF_OPER_DOWN,
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IF_OPER_LOWERLAYERDOWN,
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IF_OPER_TESTING,
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IF_OPER_DORMANT,
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IF_OPER_UP,
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};
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/* link modes */
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enum {
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IF_LINK_MODE_DEFAULT,
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IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
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};
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/*
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* Device mapping structure. I'd just gone off and designed a
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* beautiful scheme using only loadable modules with arguments
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* for driver options and along come the PCMCIA people 8)
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*
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* Ah well. The get() side of this is good for WDSETUP, and it'll
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* be handy for debugging things. The set side is fine for now and
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* being very small might be worth keeping for clean configuration.
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*/
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/* for compatibility with glibc net/if.h */
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#if __UAPI_DEF_IF_IFMAP
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struct ifmap {
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unsigned long mem_start;
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unsigned long mem_end;
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unsigned short base_addr;
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unsigned char irq;
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unsigned char dma;
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unsigned char port;
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/* 3 bytes spare */
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};
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#endif /* __UAPI_DEF_IF_IFMAP */
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struct if_settings {
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unsigned int type; /* Type of physical device or protocol */
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unsigned int size; /* Size of the data allocated by the caller */
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union {
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/* {atm/eth/dsl}_settings anyone ? */
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raw_hdlc_proto __user *raw_hdlc;
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cisco_proto __user *cisco;
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fr_proto __user *fr;
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fr_proto_pvc __user *fr_pvc;
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fr_proto_pvc_info __user *fr_pvc_info;
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/* interface settings */
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sync_serial_settings __user *sync;
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te1_settings __user *te1;
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} ifs_ifsu;
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};
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/*
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* Interface request structure used for socket
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* ioctl's. All interface ioctl's must have parameter
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* definitions which begin with ifr_name. The
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* remainder may be interface specific.
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*/
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/* for compatibility with glibc net/if.h */
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#if __UAPI_DEF_IF_IFREQ
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struct ifreq {
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#define IFHWADDRLEN 6
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union
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{
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char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
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} ifr_ifrn;
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union {
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struct sockaddr ifru_addr;
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struct sockaddr ifru_dstaddr;
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struct sockaddr ifru_broadaddr;
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struct sockaddr ifru_netmask;
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struct sockaddr ifru_hwaddr;
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short ifru_flags;
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int ifru_ivalue;
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int ifru_mtu;
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struct ifmap ifru_map;
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char ifru_slave[IFNAMSIZ]; /* Just fits the size */
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char ifru_newname[IFNAMSIZ];
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void __user * ifru_data;
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struct if_settings ifru_settings;
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} ifr_ifru;
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};
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#endif /* __UAPI_DEF_IF_IFREQ */
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#define ifr_name ifr_ifrn.ifrn_name /* interface name */
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#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
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#define ifr_addr ifr_ifru.ifru_addr /* address */
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#define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-p lnk */
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#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
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#define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
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#define ifr_flags ifr_ifru.ifru_flags /* flags */
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#define ifr_metric ifr_ifru.ifru_ivalue /* metric */
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#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
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#define ifr_map ifr_ifru.ifru_map /* device map */
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#define ifr_slave ifr_ifru.ifru_slave /* slave device */
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#define ifr_data ifr_ifru.ifru_data /* for use by interface */
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#define ifr_ifindex ifr_ifru.ifru_ivalue /* interface index */
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#define ifr_bandwidth ifr_ifru.ifru_ivalue /* link bandwidth */
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#define ifr_qlen ifr_ifru.ifru_ivalue /* Queue length */
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#define ifr_newname ifr_ifru.ifru_newname /* New name */
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#define ifr_settings ifr_ifru.ifru_settings /* Device/proto settings*/
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/*
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* Structure used in SIOCGIFCONF request.
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* Used to retrieve interface configuration
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* for machine (useful for programs which
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* must know all networks accessible).
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*/
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/* for compatibility with glibc net/if.h */
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#if __UAPI_DEF_IF_IFCONF
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struct ifconf {
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int ifc_len; /* size of buffer */
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union {
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char __user *ifcu_buf;
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struct ifreq __user *ifcu_req;
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} ifc_ifcu;
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};
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#endif /* __UAPI_DEF_IF_IFCONF */
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#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
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#define ifc_req ifc_ifcu.ifcu_req /* array of structures */
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#endif /* _LINUX_IF_H */
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