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298 lines
11 KiB
298 lines
11 KiB
/* 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, <[email protected]> |
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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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#define ALTIFNAMSIZ 128 |
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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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IF_LINK_MODE_TESTING, /* limit upward transition to testing */ |
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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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x25_hdlc_proto __user *x25; |
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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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