/* 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
/* 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 */
/* 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.
*/
/* * 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 */
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