path: root/net/wireless/wext-core.c

/*
 * This file implement the Wireless Extensions core API.
 *
 * Authors :	Jean Tourrilhes - HPL - <jt@hpl.hp.com>
 * Copyright (c) 1997-2007 Jean Tourrilhes, All Rights Reserved.
 * Copyright	2009 Johannes Berg <johannes@sipsolutions.net>
 *
 * (As all part of the Linux kernel, this file is GPL)
 */
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/rtnetlink.h>
#include <linux/slab.h>
#include <linux/wireless.h>
#include <linux/uaccess.h>
#include <linux/export.h>
#include <net/cfg80211.h>
#include <net/iw_handler.h>
#include <net/netlink.h>
#include <net/wext.h>
#include <net/net_namespace.h>

typedef int (*wext_ioctl_func)(struct net_device *, struct iwreq *,
			       unsigned int, struct iw_request_info *,
			       iw_handler);


/*
 * Meta-data about all the standard Wireless Extension request we
 * know about.
 */
static const struct iw_ioctl_description standard_ioctl[] = {
	[IW_IOCTL_IDX(SIOCSIWCOMMIT)] = {
		.header_type	= IW_HEADER_TYPE_NULL,
	},
	[IW_IOCTL_IDX(SIOCGIWNAME)] = {
		.header_type	= IW_HEADER_TYPE_CHAR,
		.flags		= IW_DESCR_FLAG_DUMP,
	},
	[IW_IOCTL_IDX(SIOCSIWNWID)] = {
		.header_type	= IW_HEADER_TYPE_PARAM,
		.flags		= IW_DESCR_FLAG_EVENT,
	},
	[IW_IOCTL_IDX(SIOCGIWNWID)] = {
		.header_type	= IW_HEADER_TYPE_PARAM,
		.flags		= IW_DESCR_FLAG_DUMP,
	},
	[IW_IOCTL_IDX(SIOCSIWFREQ)] = {
		.header_type	= IW_HEADER_TYPE_FREQ,
		.flags		= IW_DESCR_FLAG_EVENT,
	},
	[IW_IOCTL_IDX(SIOCGIWFREQ)] = {
		.header_type	= IW_HEADER_TYPE_FREQ,
		.flags		= IW_DESCR_FLAG_DUMP,
	},
	[IW_IOCTL_IDX(SIOCSIWMODE)] = {
		.header_type	= IW_HEADER_TYPE_UINT,
		.flags		= IW_DESCR_FLAG_EVENT,
	},
	[IW_IOCTL_IDX(SIOCGIWMODE)] = {
		.header_type	= IW_HEADER_TYPE_UINT,
		.flags		= IW_DESCR_FLAG_DUMP,
	},
	[IW_IOCTL_IDX(SIOCSIWSENS)] = {
		.header_type	= IW_HEADER_TYPE_PARAM,
	},
	[IW_IOCTL_IDX(SIOCGIWSENS)] = {
		.header_type	= IW_HEADER_TYPE_PARAM,
	},
	[IW_IOCTL_IDX(SIOCSIWRANGE)] = {
		.header_type	= IW_HEADER_TYPE_NULL,
	},
	[IW_IOCTL_IDX(SIOCGIWRANGE)] = {
		.header_type	= IW_HEADER_TYPE_POINT,
		.token_size	= 1,
		.max_tokens	= sizeof(struct iw_range),
		.flags		= IW_DESCR_FLAG_DUMP,
	},
	[IW_IOCTL_IDX(SIOCSIWPRIV)] = {
		.header_type	= IW_HEADER_TYPE_NULL,
	},
	[IW_IOCTL_IDX(SIOCGIWPRIV)] = { /* (handled directly by us) */
		.header_type	= IW_HEADER_TYPE_POINT,
		.token_size	= sizeof(struct iw_priv_args),
		.max_tokens	= 16,
		.flags		= IW_DESCR_FLAG_NOMAX,
	},
	[IW_IOCTL_IDX(SIOCSIWSTATS)] = {
		.header_type	= IW_HEADER_TYPE_NULL,
	},
	[IW_IOCTL_IDX(SIOCGIWSTATS)] = { /* (handled directly by us) */
		.header_type	= IW_HEADER_TYPE_POINT,
		.token_size	= 1,
		.max_tokens	= sizeof(struct iw_statistics),
		.flags		= IW_DESCR_FLAG_DUMP,
	},
	[IW_IOCTL_IDX(SIOCSIWSPY)] = {
		.header_type	= IW_HEADER_TYPE_POINT,
		.token_size	= sizeof(struct sockaddr),
		.max_tokens	= IW_MAX_SPY,
	},
	[IW_IOCTL_IDX(SIOCGIWSPY)] = {
		.header_type	= IW_HEADER_TYPE_POINT,
		.token_size	= sizeof(struct sockaddr) +
				  sizeof(struct iw_quality),
		.max_tokens	= IW_MAX_SPY,
	},
	[IW_IOCTL_IDX(SIOCSIWTHRSPY)] = {
		.header_type	= IW_HEADER_TYPE_POINT,
		.token_size	= sizeof(struct