/*
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/*
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* This file implement the Wireless Extensions APIs.
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* This file implement the Wireless Extensions APIs.
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*
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*
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* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
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* Authors : Jean Tourrilhes - HPL - <jt@hpl.hp.com>
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* Copyright (c) 1997-2003 Jean Tourrilhes, All Rights Reserved.
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* Copyright (c) 1997-2003 Jean Tourrilhes, All Rights Reserved.
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*
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*
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* (As all part of the Linux kernel, this file is GPL)
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* (As all part of the Linux kernel, this file is GPL)
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*/
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*/
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/************************** DOCUMENTATION **************************/
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/************************** DOCUMENTATION **************************/
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/*
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/*
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* API definition :
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* API definition :
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* --------------
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* --------------
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* See <linux/wireless.h> for details of the APIs and the rest.
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* See <linux/wireless.h> for details of the APIs and the rest.
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*
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*
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* History :
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* History :
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* -------
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* -------
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*
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*
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* v1 - 5.12.01 - Jean II
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* v1 - 5.12.01 - Jean II
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* o Created this file.
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* o Created this file.
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*
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*
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* v2 - 13.12.01 - Jean II
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* v2 - 13.12.01 - Jean II
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* o Move /proc/net/wireless stuff from net/core/dev.c to here
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* o Move /proc/net/wireless stuff from net/core/dev.c to here
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* o Make Wireless Extension IOCTLs go through here
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* o Make Wireless Extension IOCTLs go through here
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* o Added iw_handler handling ;-)
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* o Added iw_handler handling ;-)
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* o Added standard ioctl description
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* o Added standard ioctl description
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* o Initial dumb commit strategy based on orinoco.c
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* o Initial dumb commit strategy based on orinoco.c
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*
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*
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* v3 - 19.12.01 - Jean II
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* v3 - 19.12.01 - Jean II
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* o Make sure we don't go out of standard_ioctl[] in ioctl_standard_call
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* o Make sure we don't go out of standard_ioctl[] in ioctl_standard_call
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* o Add event dispatcher function
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* o Add event dispatcher function
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* o Add event description
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* o Add event description
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* o Propagate events as rtnetlink IFLA_WIRELESS option
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* o Propagate events as rtnetlink IFLA_WIRELESS option
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* o Generate event on selected SET requests
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* o Generate event on selected SET requests
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*
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*
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* v4 - 18.04.02 - Jean II
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* v4 - 18.04.02 - Jean II
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* o Fix stupid off by one in iw_ioctl_description : IW_ESSID_MAX_SIZE + 1
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* o Fix stupid off by one in iw_ioctl_description : IW_ESSID_MAX_SIZE + 1
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*
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*
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* v5 - 21.06.02 - Jean II
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* v5 - 21.06.02 - Jean II
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* o Add IW_PRIV_TYPE_ADDR in priv_type_size (+cleanup)
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* o Add IW_PRIV_TYPE_ADDR in priv_type_size (+cleanup)
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* o Reshuffle IW_HEADER_TYPE_XXX to map IW_PRIV_TYPE_XXX changes
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* o Reshuffle IW_HEADER_TYPE_XXX to map IW_PRIV_TYPE_XXX changes
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* o Add IWEVCUSTOM for driver specific event/scanning token
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* o Add IWEVCUSTOM for driver specific event/scanning token
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* o Turn on WE_STRICT_WRITE by default + kernel warning
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* o Turn on WE_STRICT_WRITE by default + kernel warning
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* o Fix WE_STRICT_WRITE in ioctl_export_private() (32 => iw_num)
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* o Fix WE_STRICT_WRITE in ioctl_export_private() (32 => iw_num)
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* o Fix off-by-one in test (extra_size <= IFNAMSIZ)
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* o Fix off-by-one in test (extra_size <= IFNAMSIZ)
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*
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*
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* v6 - 9.01.03 - Jean II
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* v6 - 9.01.03 - Jean II
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* o Add common spy support : iw_handler_set_spy(), wireless_spy_update()
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* o Add common spy support : iw_handler_set_spy(), wireless_spy_update()
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* o Add enhanced spy support : iw_handler_set_thrspy() and event.
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* o Add enhanced spy support : iw_handler_set_thrspy() and event.
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* o Add WIRELESS_EXT version display in /proc/net/wireless
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* o Add WIRELESS_EXT version display in /proc/net/wireless
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*/
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*/
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/***************************** INCLUDES *****************************/
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/***************************** INCLUDES *****************************/
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#include <asm/uaccess.h> /* copy_to_user() */
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#include <asm/uaccess.h> /* copy_to_user() */
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#include <linux/config.h> /* Not needed ??? */
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#include <linux/config.h> /* Not needed ??? */
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#include <linux/types.h> /* off_t */
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#include <linux/types.h> /* off_t */
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#include <linux/netdevice.h> /* struct ifreq, dev_get_by_name() */
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#include <linux/netdevice.h> /* struct ifreq, dev_get_by_name() */
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#include <linux/rtnetlink.h> /* rtnetlink stuff */
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#include <linux/rtnetlink.h> /* rtnetlink stuff */
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#include <linux/if_arp.h> /* ARPHRD_ETHER */
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#include <linux/if_arp.h> /* ARPHRD_ETHER */
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#include <linux/wireless.h> /* Pretty obvious */
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#include <linux/wireless.h> /* Pretty obvious */
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#include <net/iw_handler.h> /* New driver API */
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#include <net/iw_handler.h> /* New driver API */
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/**************************** CONSTANTS ****************************/
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/**************************** CONSTANTS ****************************/
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/* Enough lenience, let's make sure things are proper... */
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/* Enough lenience, let's make sure things are proper... */
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#define WE_STRICT_WRITE /* Check write buffer size */
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#define WE_STRICT_WRITE /* Check write buffer size */
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/* I'll probably drop both the define and kernel message in the next version */
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/* I'll probably drop both the define and kernel message in the next version */
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/* Debuging stuff */
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/* Debuging stuff */
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#undef WE_IOCTL_DEBUG /* Debug IOCTL API */
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#undef WE_IOCTL_DEBUG /* Debug IOCTL API */
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#undef WE_EVENT_DEBUG /* Debug Event dispatcher */
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#undef WE_EVENT_DEBUG /* Debug Event dispatcher */
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#undef WE_SPY_DEBUG /* Debug enhanced spy support */
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#undef WE_SPY_DEBUG /* Debug enhanced spy support */
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/* Options */
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/* Options */
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#define WE_EVENT_NETLINK /* Propagate events using rtnetlink */
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#define WE_EVENT_NETLINK /* Propagate events using rtnetlink */
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#define WE_SET_EVENT /* Generate an event on some set commands */
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#define WE_SET_EVENT /* Generate an event on some set commands */
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/************************* GLOBAL VARIABLES *************************/
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/************************* GLOBAL VARIABLES *************************/
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/*
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/*
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* You should not use global variables, because of re-entrancy.
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* You should not use global variables, because of re-entrancy.
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* On our case, it's only const, so it's OK...
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* On our case, it's only const, so it's OK...
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*/
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*/
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/*
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/*
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* Meta-data about all the standard Wireless Extension request we
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* Meta-data about all the standard Wireless Extension request we
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* know about.
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* know about.
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*/
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*/
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static const struct iw_ioctl_description standard_ioctl[] = {
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static const struct iw_ioctl_description standard_ioctl[] = {
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/* SIOCSIWCOMMIT */
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/* SIOCSIWCOMMIT */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCGIWNAME */
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/* SIOCGIWNAME */
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{ IW_HEADER_TYPE_CHAR, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_CHAR, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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/* SIOCSIWNWID */
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/* SIOCSIWNWID */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, IW_DESCR_FLAG_EVENT},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, IW_DESCR_FLAG_EVENT},
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/* SIOCGIWNWID */
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/* SIOCGIWNWID */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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/* SIOCSIWFREQ */
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/* SIOCSIWFREQ */
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{ IW_HEADER_TYPE_FREQ, 0, 0, 0, 0, IW_DESCR_FLAG_EVENT},
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{ IW_HEADER_TYPE_FREQ, 0, 0, 0, 0, IW_DESCR_FLAG_EVENT},
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/* SIOCGIWFREQ */
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/* SIOCGIWFREQ */
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{ IW_HEADER_TYPE_FREQ, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_FREQ, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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/* SIOCSIWMODE */
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/* SIOCSIWMODE */
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{ IW_HEADER_TYPE_UINT, 0, 0, 0, 0, IW_DESCR_FLAG_EVENT},
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{ IW_HEADER_TYPE_UINT, 0, 0, 0, 0, IW_DESCR_FLAG_EVENT},
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/* SIOCGIWMODE */
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/* SIOCGIWMODE */
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{ IW_HEADER_TYPE_UINT, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_UINT, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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/* SIOCSIWSENS */
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/* SIOCSIWSENS */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWSENS */
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/* SIOCGIWSENS */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCSIWRANGE */
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/* SIOCSIWRANGE */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCGIWRANGE */
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/* SIOCGIWRANGE */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, sizeof(struct iw_range), IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, sizeof(struct iw_range), IW_DESCR_FLAG_DUMP},
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/* SIOCSIWPRIV */
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/* SIOCSIWPRIV */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCGIWPRIV (handled directly by us) */
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/* SIOCGIWPRIV (handled directly by us) */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCSIWSTATS */
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/* SIOCSIWSTATS */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCGIWSTATS (handled directly by us) */
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/* SIOCGIWSTATS (handled directly by us) */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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/* SIOCSIWSPY */
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/* SIOCSIWSPY */
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{ IW_HEADER_TYPE_POINT, 0, sizeof(struct sockaddr), 0, IW_MAX_SPY, 0},
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{ IW_HEADER_TYPE_POINT, 0, sizeof(struct sockaddr), 0, IW_MAX_SPY, 0},
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/* SIOCGIWSPY */
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/* SIOCGIWSPY */
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{ IW_HEADER_TYPE_POINT, 0, (sizeof(struct sockaddr) + sizeof(struct iw_quality)), 0, IW_MAX_SPY, 0},
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{ IW_HEADER_TYPE_POINT, 0, (sizeof(struct sockaddr) + sizeof(struct iw_quality)), 0, IW_MAX_SPY, 0},
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/* SIOCSIWTHRSPY */
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/* SIOCSIWTHRSPY */
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{ IW_HEADER_TYPE_POINT, 0, sizeof(struct iw_thrspy), 1, 1, 0},
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{ IW_HEADER_TYPE_POINT, 0, sizeof(struct iw_thrspy), 1, 1, 0},
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/* SIOCGIWTHRSPY */
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/* SIOCGIWTHRSPY */
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{ IW_HEADER_TYPE_POINT, 0, sizeof(struct iw_thrspy), 1, 1, 0},
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{ IW_HEADER_TYPE_POINT, 0, sizeof(struct iw_thrspy), 1, 1, 0},
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/* SIOCSIWAP */
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/* SIOCSIWAP */
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{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
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/* SIOCGIWAP */
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/* SIOCGIWAP */
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{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, IW_DESCR_FLAG_DUMP},
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/* -- hole -- */
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/* -- hole -- */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCGIWAPLIST */
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/* SIOCGIWAPLIST */
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{ IW_HEADER_TYPE_POINT, 0, (sizeof(struct sockaddr) + sizeof(struct iw_quality)), 0, IW_MAX_AP, 0},
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{ IW_HEADER_TYPE_POINT, 0, (sizeof(struct sockaddr) + sizeof(struct iw_quality)), 0, IW_MAX_AP, 0},
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/* SIOCSIWSCAN */
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/* SIOCSIWSCAN */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWSCAN */
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/* SIOCGIWSCAN */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_SCAN_MAX_DATA, 0},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_SCAN_MAX_DATA, 0},
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/* SIOCSIWESSID */
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/* SIOCSIWESSID */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, IW_DESCR_FLAG_EVENT},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, IW_DESCR_FLAG_EVENT},
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/* SIOCGIWESSID */
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/* SIOCGIWESSID */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, IW_DESCR_FLAG_DUMP},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, IW_DESCR_FLAG_DUMP},
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/* SIOCSIWNICKN */
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/* SIOCSIWNICKN */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, 0},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, 0},
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/* SIOCGIWNICKN */
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/* SIOCGIWNICKN */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, 0},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ESSID_MAX_SIZE + 1, 0},
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/* -- hole -- */
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/* -- hole -- */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* -- hole -- */
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/* -- hole -- */
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_NULL, 0, 0, 0, 0, 0},
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/* SIOCSIWRATE */
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/* SIOCSIWRATE */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWRATE */
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/* SIOCGIWRATE */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCSIWRTS */
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/* SIOCSIWRTS */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWRTS */
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/* SIOCGIWRTS */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCSIWFRAG */
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/* SIOCSIWFRAG */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWFRAG */
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/* SIOCGIWFRAG */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCSIWTXPOW */
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/* SIOCSIWTXPOW */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWTXPOW */
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/* SIOCGIWTXPOW */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCSIWRETRY */
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/* SIOCSIWRETRY */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWRETRY */
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/* SIOCGIWRETRY */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCSIWENCODE */
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/* SIOCSIWENCODE */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ENCODING_TOKEN_MAX, IW_DESCR_FLAG_EVENT | IW_DESCR_FLAG_RESTRICT},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ENCODING_TOKEN_MAX, IW_DESCR_FLAG_EVENT | IW_DESCR_FLAG_RESTRICT},
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/* SIOCGIWENCODE */
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/* SIOCGIWENCODE */
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ENCODING_TOKEN_MAX, IW_DESCR_FLAG_DUMP | IW_DESCR_FLAG_RESTRICT},
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{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_ENCODING_TOKEN_MAX, IW_DESCR_FLAG_DUMP | IW_DESCR_FLAG_RESTRICT},
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/* SIOCSIWPOWER */
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/* SIOCSIWPOWER */
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
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/* SIOCGIWPOWER */
|
/* SIOCGIWPOWER */
|
{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
|
{ IW_HEADER_TYPE_PARAM, 0, 0, 0, 0, 0},
|
};
|
};
|
static const int standard_ioctl_num = (sizeof(standard_ioctl) /
|
static const int standard_ioctl_num = (sizeof(standard_ioctl) /
|
sizeof(struct iw_ioctl_description));
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sizeof(struct iw_ioctl_description));
|
|
|
/*
|
/*
|
* Meta-data about all the additional standard Wireless Extension events
|
* Meta-data about all the additional standard Wireless Extension events
|
* we know about.
|
* we know about.
|
*/
|
*/
|
static const struct iw_ioctl_description standard_event[] = {
|
static const struct iw_ioctl_description standard_event[] = {
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/* IWEVTXDROP */
|
/* IWEVTXDROP */
|
{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
|
{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
|
/* IWEVQUAL */
|
/* IWEVQUAL */
|
{ IW_HEADER_TYPE_QUAL, 0, 0, 0, 0, 0},
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{ IW_HEADER_TYPE_QUAL, 0, 0, 0, 0, 0},
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/* IWEVCUSTOM */
|
/* IWEVCUSTOM */
|
{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_CUSTOM_MAX, 0},
|
{ IW_HEADER_TYPE_POINT, 0, 1, 0, IW_CUSTOM_MAX, 0},
|
/* IWEVREGISTERED */
|
/* IWEVREGISTERED */
|
{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
|
{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
|
/* IWEVEXPIRED */
|
/* IWEVEXPIRED */
|
{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
|
{ IW_HEADER_TYPE_ADDR, 0, 0, 0, 0, 0},
|
};
|
};
|
static const int standard_event_num = (sizeof(standard_event) /
|
static const int standard_event_num = (sizeof(standard_event) /
|
sizeof(struct iw_ioctl_description));
|
sizeof(struct iw_ioctl_description));
|
|
|
/* Size (in bytes) of the various private data types */
|
/* Size (in bytes) of the various private data types */
|
static const char priv_type_size[] = {
|
static const char priv_type_size[] = {
|
0, /* IW_PRIV_TYPE_NONE */
|
0, /* IW_PRIV_TYPE_NONE */
|
1, /* IW_PRIV_TYPE_BYTE */
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1, /* IW_PRIV_TYPE_BYTE */
|
1, /* IW_PRIV_TYPE_CHAR */
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1, /* IW_PRIV_TYPE_CHAR */
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0, /* Not defined */
|
0, /* Not defined */
|
sizeof(__u32), /* IW_PRIV_TYPE_INT */
|
sizeof(__u32), /* IW_PRIV_TYPE_INT */
|
sizeof(struct iw_freq), /* IW_PRIV_TYPE_FLOAT */
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sizeof(struct iw_freq), /* IW_PRIV_TYPE_FLOAT */
|
sizeof(struct sockaddr), /* IW_PRIV_TYPE_ADDR */
|
sizeof(struct sockaddr), /* IW_PRIV_TYPE_ADDR */
|
0, /* Not defined */
|
0, /* Not defined */
|
};
|
};
|
|
|
/* Size (in bytes) of various events */
|
/* Size (in bytes) of various events */
|
static const int event_type_size[] = {
|
static const int event_type_size[] = {
|
IW_EV_LCP_LEN, /* IW_HEADER_TYPE_NULL */
|
IW_EV_LCP_LEN, /* IW_HEADER_TYPE_NULL */
|
0,
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0,
|
IW_EV_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */
|
IW_EV_CHAR_LEN, /* IW_HEADER_TYPE_CHAR */
|
0,
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0,
|
IW_EV_UINT_LEN, /* IW_HEADER_TYPE_UINT */
|
IW_EV_UINT_LEN, /* IW_HEADER_TYPE_UINT */
|
IW_EV_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */
|
IW_EV_FREQ_LEN, /* IW_HEADER_TYPE_FREQ */
|
IW_EV_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */
|
IW_EV_ADDR_LEN, /* IW_HEADER_TYPE_ADDR */
|
0,
|
0,
|
IW_EV_POINT_LEN, /* Without variable payload */
|
IW_EV_POINT_LEN, /* Without variable payload */
|
IW_EV_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */
|
IW_EV_PARAM_LEN, /* IW_HEADER_TYPE_PARAM */
|
IW_EV_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */
|
IW_EV_QUAL_LEN, /* IW_HEADER_TYPE_QUAL */
|
};
|
};
|
|
|
/************************ COMMON SUBROUTINES ************************/
|
/************************ COMMON SUBROUTINES ************************/
|
/*
|
/*
|
* Stuff that may be used in various place or doesn't fit in one
|
* Stuff that may be used in various place or doesn't fit in one
|
* of the section below.
|
* of the section below.
|
*/
|
*/
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Return the driver handler associated with a specific Wireless Extension.
|
* Return the driver handler associated with a specific Wireless Extension.
|
* Called from various place, so make sure it remains efficient.
|
* Called from various place, so make sure it remains efficient.
|
*/
|
*/
|
static inline iw_handler get_handler(struct net_device *dev,
|
static inline iw_handler get_handler(struct net_device *dev,
|
unsigned int cmd)
|
unsigned int cmd)
|
{
|
{
|
/* Don't "optimise" the following variable, it will crash */
|
/* Don't "optimise" the following variable, it will crash */
|
unsigned int index; /* *MUST* be unsigned */
|
unsigned int index; /* *MUST* be unsigned */
|
|
|
/* Check if we have some wireless handlers defined */
|
/* Check if we have some wireless handlers defined */
|
if(dev->wireless_handlers == NULL)
|
if(dev->wireless_handlers == NULL)
|
return NULL;
|
return NULL;
|
|
|
/* Try as a standard command */
|
/* Try as a standard command */
|
index = cmd - SIOCIWFIRST;
|
index = cmd - SIOCIWFIRST;
|
if(index < dev->wireless_handlers->num_standard)
|
if(index < dev->wireless_handlers->num_standard)
|
return dev->wireless_handlers->standard[index];
|
return dev->wireless_handlers->standard[index];
|
|
|
/* Try as a private command */
|
/* Try as a private command */
|
index = cmd - SIOCIWFIRSTPRIV;
|
index = cmd - SIOCIWFIRSTPRIV;
|
if(index < dev->wireless_handlers->num_private)
|
if(index < dev->wireless_handlers->num_private)
|
return dev->wireless_handlers->private[index];
|
return dev->wireless_handlers->private[index];
|
|
|
/* Not found */
|
/* Not found */
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Get statistics out of the driver
|
* Get statistics out of the driver
|
*/
|
*/
|
static inline struct iw_statistics *get_wireless_stats(struct net_device *dev)
|
static inline struct iw_statistics *get_wireless_stats(struct net_device *dev)
|
{
|
{
|
return (dev->get_wireless_stats ?
|
return (dev->get_wireless_stats ?
|
dev->get_wireless_stats(dev) :
|
dev->get_wireless_stats(dev) :
|
(struct iw_statistics *) NULL);
|
(struct iw_statistics *) NULL);
|
/* In the future, get_wireless_stats may move from 'struct net_device'
|
/* In the future, get_wireless_stats may move from 'struct net_device'
|
* to 'struct iw_handler_def', to de-bloat struct net_device.
|
* to 'struct iw_handler_def', to de-bloat struct net_device.
|
* Definitely worse a thought... */
|
* Definitely worse a thought... */
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Call the commit handler in the driver
|
* Call the commit handler in the driver
|
* (if exist and if conditions are right)
|
* (if exist and if conditions are right)
|
*
|
*
|
* Note : our current commit strategy is currently pretty dumb,
|
* Note : our current commit strategy is currently pretty dumb,
|
* but we will be able to improve on that...
|
* but we will be able to improve on that...
|
* The goal is to try to agreagate as many changes as possible
|
* The goal is to try to agreagate as many changes as possible
|
* before doing the commit. Drivers that will define a commit handler
|
* before doing the commit. Drivers that will define a commit handler
|
* are usually those that need a reset after changing parameters, so
|
* are usually those that need a reset after changing parameters, so
|
* we want to minimise the number of reset.
|
* we want to minimise the number of reset.
|
* A cool idea is to use a timer : at each "set" command, we re-set the
|
* A cool idea is to use a timer : at each "set" command, we re-set the
|
* timer, when the timer eventually fires, we call the driver.
|
* timer, when the timer eventually fires, we call the driver.
|
* Hopefully, more on that later.
|
* Hopefully, more on that later.
|
*
|
*
|
* Also, I'm waiting to see how many people will complain about the
|
* Also, I'm waiting to see how many people will complain about the
|
* netif_running(dev) test. I'm open on that one...
|
* netif_running(dev) test. I'm open on that one...
|
* Hopefully, the driver will remember to do a commit in "open()" ;-)
|
* Hopefully, the driver will remember to do a commit in "open()" ;-)
|
*/
|
*/
|
static inline int call_commit_handler(struct net_device * dev)
|
static inline int call_commit_handler(struct net_device * dev)
|
{
|
{
|
if((netif_running(dev)) &&
|
if((netif_running(dev)) &&
|
(dev->wireless_handlers->standard[0] != NULL)) {
|
(dev->wireless_handlers->standard[0] != NULL)) {
|
/* Call the commit handler on the driver */
|
/* Call the commit handler on the driver */
|
return dev->wireless_handlers->standard[0](dev, NULL,
|
return dev->wireless_handlers->standard[0](dev, NULL,
|
NULL, NULL);
|
NULL, NULL);
|
} else
|
} else
|
return 0; /* Command completed successfully */
|
return 0; /* Command completed successfully */
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Number of private arguments
|
* Number of private arguments
|
*/
|
*/
|
static inline int get_priv_size(__u16 args)
|
static inline int get_priv_size(__u16 args)
|
{
|
{
|
int num = args & IW_PRIV_SIZE_MASK;
|
int num = args & IW_PRIV_SIZE_MASK;
|
int type = (args & IW_PRIV_TYPE_MASK) >> 12;
|
int type = (args & IW_PRIV_TYPE_MASK) >> 12;
|
|
|
return num * priv_type_size[type];
|
return num * priv_type_size[type];
|
}
|
}
|
|
|
|
|
/******************** /proc/net/wireless SUPPORT ********************/
|
/******************** /proc/net/wireless SUPPORT ********************/
|
/*
|
/*
|
* The /proc/net/wireless file is a human readable user-space interface
|
* The /proc/net/wireless file is a human readable user-space interface
|
* exporting various wireless specific statistics from the wireless devices.
|
* exporting various wireless specific statistics from the wireless devices.
|
* This is the most popular part of the Wireless Extensions ;-)
|
* This is the most popular part of the Wireless Extensions ;-)
|
*
|
*
|
* This interface is a pure clone of /proc/net/dev (in net/core/dev.c).
|
* This interface is a pure clone of /proc/net/dev (in net/core/dev.c).
|
* The content of the file is basically the content of "struct iw_statistics".
|
* The content of the file is basically the content of "struct iw_statistics".
|
*/
|
*/
|
|
|
#ifdef CONFIG_PROC_FS
|
#ifdef CONFIG_PROC_FS
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Print one entry (line) of /proc/net/wireless
|
* Print one entry (line) of /proc/net/wireless
|
*/
|
*/
|
static inline int sprintf_wireless_stats(char *buffer, struct net_device *dev)
|
static inline int sprintf_wireless_stats(char *buffer, struct net_device *dev)
|
{
|
{
|
/* Get stats from the driver */
|
/* Get stats from the driver */
|
struct iw_statistics *stats;
|
struct iw_statistics *stats;
|
int size;
|
int size;
|
|
|
stats = get_wireless_stats(dev);
|
stats = get_wireless_stats(dev);
|
if (stats != (struct iw_statistics *) NULL) {
|
if (stats != (struct iw_statistics *) NULL) {
|
size = sprintf(buffer,
|
size = sprintf(buffer,
|
"%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d %6d %6d %6d\n",
|
"%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d %6d %6d %6d\n",
|
dev->name,
|
dev->name,
|
stats->status,
|
stats->status,
|
stats->qual.qual,
|
stats->qual.qual,
|
stats->qual.updated & 1 ? '.' : ' ',
|
stats->qual.updated & 1 ? '.' : ' ',
|
((__u8) stats->qual.level),
|
((__u8) stats->qual.level),
|
stats->qual.updated & 2 ? '.' : ' ',
|
stats->qual.updated & 2 ? '.' : ' ',
|
((__u8) stats->qual.noise),
|
((__u8) stats->qual.noise),
|
stats->qual.updated & 4 ? '.' : ' ',
|
stats->qual.updated & 4 ? '.' : ' ',
|
stats->discard.nwid,
|
stats->discard.nwid,
|
stats->discard.code,
|
stats->discard.code,
|
stats->discard.fragment,
|
stats->discard.fragment,
|
stats->discard.retries,
|
stats->discard.retries,
|
stats->discard.misc,
|
stats->discard.misc,
|
stats->miss.beacon);
|
stats->miss.beacon);
|
stats->qual.updated = 0;
|
stats->qual.updated = 0;
|
}
|
}
|
else
|
else
|
size = 0;
|
size = 0;
|
|
|
return size;
|
return size;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Print info for /proc/net/wireless (print all entries)
|
* Print info for /proc/net/wireless (print all entries)
|
*/
|
*/
|
int dev_get_wireless_info(char * buffer, char **start, off_t offset,
|
int dev_get_wireless_info(char * buffer, char **start, off_t offset,
|
int length)
|
int length)
|
{
|
{
|
int len = 0;
|
int len = 0;
|
off_t begin = 0;
|
off_t begin = 0;
|
off_t pos = 0;
|
off_t pos = 0;
|
int size;
|
int size;
|
|
|
struct net_device * dev;
|
struct net_device * dev;
|
|
|
size = sprintf(buffer,
|
size = sprintf(buffer,
|
"Inter-| sta-| Quality | Discarded packets | Missed | WE\n"
|
"Inter-| sta-| Quality | Discarded packets | Missed | WE\n"
|
" face | tus | link level noise | nwid crypt frag retry misc | beacon | %d\n",
|
" face | tus | link level noise | nwid crypt frag retry misc | beacon | %d\n",
|
WIRELESS_EXT);
|
WIRELESS_EXT);
|
|
|
pos += size;
|
pos += size;
|
len += size;
|
len += size;
|
|
|
read_lock(&dev_base_lock);
|
read_lock(&dev_base_lock);
|
for (dev = dev_base; dev != NULL; dev = dev->next) {
|
for (dev = dev_base; dev != NULL; dev = dev->next) {
|
size = sprintf_wireless_stats(buffer + len, dev);
|
size = sprintf_wireless_stats(buffer + len, dev);
|
len += size;
|
len += size;
|
pos = begin + len;
|
pos = begin + len;
|
|
|
if (pos < offset) {
|
if (pos < offset) {
|
len = 0;
|
len = 0;
|
begin = pos;
|
begin = pos;
|
}
|
}
|
if (pos > offset + length)
|
if (pos > offset + length)
|
break;
|
break;
|
}
|
}
|
read_unlock(&dev_base_lock);
|
read_unlock(&dev_base_lock);
|
|
|
*start = buffer + (offset - begin); /* Start of wanted data */
|
*start = buffer + (offset - begin); /* Start of wanted data */
|
len -= (offset - begin); /* Start slop */
|
len -= (offset - begin); /* Start slop */
|
if (len > length)
|
if (len > length)
|
len = length; /* Ending slop */
|
len = length; /* Ending slop */
|
if (len < 0)
|
if (len < 0)
|
len = 0;
|
len = 0;
|
|
|
return len;
|
return len;
|
}
|
}
|
#endif /* CONFIG_PROC_FS */
|
#endif /* CONFIG_PROC_FS */
|
|
|
/************************** IOCTL SUPPORT **************************/
|
/************************** IOCTL SUPPORT **************************/
|
/*
|
/*
|
* The original user space API to configure all those Wireless Extensions
|
* The original user space API to configure all those Wireless Extensions
|
* is through IOCTLs.
|
* is through IOCTLs.
|
* In there, we check if we need to call the new driver API (iw_handler)
|
* In there, we check if we need to call the new driver API (iw_handler)
|
* or just call the driver ioctl handler.
|
* or just call the driver ioctl handler.
|
*/
|
*/
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Allow programatic access to /proc/net/wireless even if /proc
|
* Allow programatic access to /proc/net/wireless even if /proc
|
* doesn't exist... Also more efficient...
|
* doesn't exist... Also more efficient...
|
*/
|
*/
|
static inline int dev_iwstats(struct net_device *dev, struct ifreq *ifr)
|
static inline int dev_iwstats(struct net_device *dev, struct ifreq *ifr)
|
{
|
{
|
/* Get stats from the driver */
|
/* Get stats from the driver */
|
struct iw_statistics *stats;
|
struct iw_statistics *stats;
|
|
|
stats = get_wireless_stats(dev);
|
stats = get_wireless_stats(dev);
|
if (stats != (struct iw_statistics *) NULL) {
|
if (stats != (struct iw_statistics *) NULL) {
|
struct iwreq * wrq = (struct iwreq *)ifr;
|
struct iwreq * wrq = (struct iwreq *)ifr;
|
|
|
/* Copy statistics to the user buffer */
|
/* Copy statistics to the user buffer */
|
if(copy_to_user(wrq->u.data.pointer, stats,
|
if(copy_to_user(wrq->u.data.pointer, stats,
|
sizeof(struct iw_statistics)))
|
sizeof(struct iw_statistics)))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
/* Check if we need to clear the update flag */
|
/* Check if we need to clear the update flag */
|
if(wrq->u.data.flags != 0)
|
if(wrq->u.data.flags != 0)
|
stats->qual.updated = 0;
|
stats->qual.updated = 0;
|
return 0;
|
return 0;
|
} else
|
} else
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Export the driver private handler definition
|
* Export the driver private handler definition
|
* They will be picked up by tools like iwpriv...
|
* They will be picked up by tools like iwpriv...
|
*/
|
*/
|
static inline int ioctl_export_private(struct net_device * dev,
|
static inline int ioctl_export_private(struct net_device * dev,
|
struct ifreq * ifr)
|
struct ifreq * ifr)
|
{
|
{
|
struct iwreq * iwr = (struct iwreq *) ifr;
|
struct iwreq * iwr = (struct iwreq *) ifr;
|
|
|
/* Check if the driver has something to export */
|
/* Check if the driver has something to export */
|
if((dev->wireless_handlers->num_private_args == 0) ||
|
if((dev->wireless_handlers->num_private_args == 0) ||
|
(dev->wireless_handlers->private_args == NULL))
|
(dev->wireless_handlers->private_args == NULL))
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
|
|
/* Check NULL pointer */
|
/* Check NULL pointer */
|
if(iwr->u.data.pointer == NULL)
|
if(iwr->u.data.pointer == NULL)
|
return -EFAULT;
|
return -EFAULT;
|
#ifdef WE_STRICT_WRITE
|
#ifdef WE_STRICT_WRITE
|
/* Check if there is enough buffer up there */
|
/* Check if there is enough buffer up there */
|
if(iwr->u.data.length < dev->wireless_handlers->num_private_args) {
|
if(iwr->u.data.length < dev->wireless_handlers->num_private_args) {
|
printk(KERN_ERR "%s (WE) : Buffer for request SIOCGIWPRIV too small (%d<%d)\n", dev->name, iwr->u.data.length, dev->wireless_handlers->num_private_args);
|
printk(KERN_ERR "%s (WE) : Buffer for request SIOCGIWPRIV too small (%d<%d)\n", dev->name, iwr->u.data.length, dev->wireless_handlers->num_private_args);
|
return -E2BIG;
|
return -E2BIG;
|
}
|
}
|
#endif /* WE_STRICT_WRITE */
|
#endif /* WE_STRICT_WRITE */
|
|
|
/* Set the number of available ioctls. */
|
/* Set the number of available ioctls. */
|
iwr->u.data.length = dev->wireless_handlers->num_private_args;
|
iwr->u.data.length = dev->wireless_handlers->num_private_args;
|
|
|
/* Copy structure to the user buffer. */
|
/* Copy structure to the user buffer. */
|
if (copy_to_user(iwr->u.data.pointer,
|
if (copy_to_user(iwr->u.data.pointer,
|
dev->wireless_handlers->private_args,
|
dev->wireless_handlers->private_args,
|
sizeof(struct iw_priv_args) * iwr->u.data.length))
|
sizeof(struct iw_priv_args) * iwr->u.data.length))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Wrapper to call a standard Wireless Extension handler.
|
* Wrapper to call a standard Wireless Extension handler.
|
* We do various checks and also take care of moving data between
|
* We do various checks and also take care of moving data between
|
* user space and kernel space.
|
* user space and kernel space.
|
*/
|
*/
|
static inline int ioctl_standard_call(struct net_device * dev,
|
static inline int ioctl_standard_call(struct net_device * dev,
|
struct ifreq * ifr,
|
struct ifreq * ifr,
|
unsigned int cmd,
|
unsigned int cmd,
|
iw_handler handler)
|
iw_handler handler)
|
{
|
{
|
struct iwreq * iwr = (struct iwreq *) ifr;
|
struct iwreq * iwr = (struct iwreq *) ifr;
|
const struct iw_ioctl_description * descr;
|
const struct iw_ioctl_description * descr;
|
struct iw_request_info info;
|
struct iw_request_info info;
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
int user_size = 0;
|
int user_size = 0;
|
|
|
/* Get the description of the IOCTL */
|
/* Get the description of the IOCTL */
|
if((cmd - SIOCIWFIRST) >= standard_ioctl_num)
|
if((cmd - SIOCIWFIRST) >= standard_ioctl_num)
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
|
descr = &(standard_ioctl[cmd - SIOCIWFIRST]);
|
|
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Found standard handler for 0x%04X\n",
|
printk(KERN_DEBUG "%s (WE) : Found standard handler for 0x%04X\n",
|
ifr->ifr_name, cmd);
|
ifr->ifr_name, cmd);
|
printk(KERN_DEBUG "%s (WE) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
|
printk(KERN_DEBUG "%s (WE) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
|
|
/* Prepare the call */
|
/* Prepare the call */
|
info.cmd = cmd;
|
info.cmd = cmd;
|
info.flags = 0;
|
info.flags = 0;
|
|
|
/* Check if we have a pointer to user space data or not */
|
/* Check if we have a pointer to user space data or not */
|
if(descr->header_type != IW_HEADER_TYPE_POINT) {
|
if(descr->header_type != IW_HEADER_TYPE_POINT) {
|
|
|
/* No extra arguments. Trivial to handle */
|
/* No extra arguments. Trivial to handle */
|
ret = handler(dev, &info, &(iwr->u), NULL);
|
ret = handler(dev, &info, &(iwr->u), NULL);
|
|
|
#ifdef WE_SET_EVENT
|
#ifdef WE_SET_EVENT
|
/* Generate an event to notify listeners of the change */
|
/* Generate an event to notify listeners of the change */
|
if((descr->flags & IW_DESCR_FLAG_EVENT) &&
|
if((descr->flags & IW_DESCR_FLAG_EVENT) &&
|
((ret == 0) || (ret == -EIWCOMMIT)))
|
((ret == 0) || (ret == -EIWCOMMIT)))
|
wireless_send_event(dev, cmd, &(iwr->u), NULL);
|
wireless_send_event(dev, cmd, &(iwr->u), NULL);
|
#endif /* WE_SET_EVENT */
|
#endif /* WE_SET_EVENT */
|
} else {
|
} else {
|
char * extra;
|
char * extra;
|
int err;
|
int err;
|
|
|
/* Check what user space is giving us */
|
/* Check what user space is giving us */
|
if(IW_IS_SET(cmd)) {
|
if(IW_IS_SET(cmd)) {
|
/* Check NULL pointer */
|
/* Check NULL pointer */
|
if((iwr->u.data.pointer == NULL) &&
|
if((iwr->u.data.pointer == NULL) &&
|
(iwr->u.data.length != 0))
|
(iwr->u.data.length != 0))
|
return -EFAULT;
|
return -EFAULT;
|
/* Check if number of token fits within bounds */
|
/* Check if number of token fits within bounds */
|
if(iwr->u.data.length > descr->max_tokens)
|
if(iwr->u.data.length > descr->max_tokens)
|
return -E2BIG;
|
return -E2BIG;
|
if(iwr->u.data.length < descr->min_tokens)
|
if(iwr->u.data.length < descr->min_tokens)
|
return -EINVAL;
|
return -EINVAL;
|
} else {
|
} else {
|
/* Check NULL pointer */
|
/* Check NULL pointer */
|
if(iwr->u.data.pointer == NULL)
|
if(iwr->u.data.pointer == NULL)
|
return -EFAULT;
|
return -EFAULT;
|
/* Save user space buffer size for checking */
|
/* Save user space buffer size for checking */
|
user_size = iwr->u.data.length;
|
user_size = iwr->u.data.length;
|
}
|
}
|
|
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Malloc %d bytes\n",
|
printk(KERN_DEBUG "%s (WE) : Malloc %d bytes\n",
|
dev->name, descr->max_tokens * descr->token_size);
|
dev->name, descr->max_tokens * descr->token_size);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
|
|
/* Always allocate for max space. Easier, and won't last
|
/* Always allocate for max space. Easier, and won't last
|
* long... */
|
* long... */
|
extra = kmalloc(descr->max_tokens * descr->token_size,
|
extra = kmalloc(descr->max_tokens * descr->token_size,
|
GFP_KERNEL);
|
GFP_KERNEL);
|
if (extra == NULL) {
|
if (extra == NULL) {
|
return -ENOMEM;
|
return -ENOMEM;
|
}
|
}
|
|
|
/* If it is a SET, get all the extra data in here */
|
/* If it is a SET, get all the extra data in here */
|
if(IW_IS_SET(cmd) && (iwr->u.data.length != 0)) {
|
if(IW_IS_SET(cmd) && (iwr->u.data.length != 0)) {
|
err = copy_from_user(extra, iwr->u.data.pointer,
|
err = copy_from_user(extra, iwr->u.data.pointer,
|
iwr->u.data.length *
|
iwr->u.data.length *
|
descr->token_size);
|
descr->token_size);
|
if (err) {
|
if (err) {
|
kfree(extra);
|
kfree(extra);
|
return -EFAULT;
|
return -EFAULT;
|
}
|
}
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Got %d bytes\n",
|
printk(KERN_DEBUG "%s (WE) : Got %d bytes\n",
|
dev->name,
|
dev->name,
|
iwr->u.data.length * descr->token_size);
|
iwr->u.data.length * descr->token_size);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
}
|
}
|
|
|
/* Call the handler */
|
/* Call the handler */
|
ret = handler(dev, &info, &(iwr->u), extra);
|
ret = handler(dev, &info, &(iwr->u), extra);
|
|
|
/* If we have something to return to the user */
|
/* If we have something to return to the user */
|
if (!ret && IW_IS_GET(cmd)) {
|
if (!ret && IW_IS_GET(cmd)) {
|
#ifdef WE_STRICT_WRITE
|
#ifdef WE_STRICT_WRITE
|
/* Check if there is enough buffer up there */
|
/* Check if there is enough buffer up there */
|
if(user_size < iwr->u.data.length) {
|
if(user_size < iwr->u.data.length) {
|
printk(KERN_ERR "%s (WE) : Buffer for request %04X too small (%d<%d)\n", dev->name, cmd, user_size, iwr->u.data.length);
|
printk(KERN_ERR "%s (WE) : Buffer for request %04X too small (%d<%d)\n", dev->name, cmd, user_size, iwr->u.data.length);
|
kfree(extra);
|
kfree(extra);
|
return -E2BIG;
|
return -E2BIG;
|
}
|
}
|
#endif /* WE_STRICT_WRITE */
|
#endif /* WE_STRICT_WRITE */
|
|
|
err = copy_to_user(iwr->u.data.pointer, extra,
|
err = copy_to_user(iwr->u.data.pointer, extra,
|
iwr->u.data.length *
|
iwr->u.data.length *
|
descr->token_size);
|
descr->token_size);
|
if (err)
|
if (err)
|
ret = -EFAULT;
|
ret = -EFAULT;
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Wrote %d bytes\n",
|
printk(KERN_DEBUG "%s (WE) : Wrote %d bytes\n",
|
dev->name,
|
dev->name,
|
iwr->u.data.length * descr->token_size);
|
iwr->u.data.length * descr->token_size);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
}
|
}
|
|
|
#ifdef WE_SET_EVENT
|
#ifdef WE_SET_EVENT
|
/* Generate an event to notify listeners of the change */
|
/* Generate an event to notify listeners of the change */
|
if((descr->flags & IW_DESCR_FLAG_EVENT) &&
|
if((descr->flags & IW_DESCR_FLAG_EVENT) &&
|
((ret == 0) || (ret == -EIWCOMMIT))) {
|
((ret == 0) || (ret == -EIWCOMMIT))) {
|
if(descr->flags & IW_DESCR_FLAG_RESTRICT)
|
if(descr->flags & IW_DESCR_FLAG_RESTRICT)
|
/* If the event is restricted, don't
|
/* If the event is restricted, don't
|
* export the payload */
|
* export the payload */
|
wireless_send_event(dev, cmd, &(iwr->u), NULL);
|
wireless_send_event(dev, cmd, &(iwr->u), NULL);
|
else
|
else
|
wireless_send_event(dev, cmd, &(iwr->u),
|
wireless_send_event(dev, cmd, &(iwr->u),
|
extra);
|
extra);
|
}
|
}
|
#endif /* WE_SET_EVENT */
|
#endif /* WE_SET_EVENT */
|
|
|
/* Cleanup - I told you it wasn't that long ;-) */
|
/* Cleanup - I told you it wasn't that long ;-) */
|
kfree(extra);
|
kfree(extra);
|
}
|
}
|
|
|
/* Call commit handler if needed and defined */
|
/* Call commit handler if needed and defined */
|
if(ret == -EIWCOMMIT)
|
if(ret == -EIWCOMMIT)
|
ret = call_commit_handler(dev);
|
ret = call_commit_handler(dev);
|
|
|
/* Here, we will generate the appropriate event if needed */
|
/* Here, we will generate the appropriate event if needed */
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Wrapper to call a private Wireless Extension handler.
|
* Wrapper to call a private Wireless Extension handler.
|
* We do various checks and also take care of moving data between
|
* We do various checks and also take care of moving data between
|
* user space and kernel space.
|
* user space and kernel space.
|
* It's not as nice and slimline as the standard wrapper. The cause
|
* It's not as nice and slimline as the standard wrapper. The cause
|
* is struct iw_priv_args, which was not really designed for the
|
* is struct iw_priv_args, which was not really designed for the
|
* job we are going here.
|
* job we are going here.
|
*
|
*
|
* IMPORTANT : This function prevent to set and get data on the same
|
* IMPORTANT : This function prevent to set and get data on the same
|
* IOCTL and enforce the SET/GET convention. Not doing it would be
|
* IOCTL and enforce the SET/GET convention. Not doing it would be
|
* far too hairy...
|
* far too hairy...
|
* If you need to set and get data at the same time, please don't use
|
* If you need to set and get data at the same time, please don't use
|
* a iw_handler but process it in your ioctl handler (i.e. use the
|
* a iw_handler but process it in your ioctl handler (i.e. use the
|
* old driver API).
|
* old driver API).
|
*/
|
*/
|
static inline int ioctl_private_call(struct net_device * dev,
|
static inline int ioctl_private_call(struct net_device * dev,
|
struct ifreq * ifr,
|
struct ifreq * ifr,
|
unsigned int cmd,
|
unsigned int cmd,
|
iw_handler handler)
|
iw_handler handler)
|
{
|
{
|
struct iwreq * iwr = (struct iwreq *) ifr;
|
struct iwreq * iwr = (struct iwreq *) ifr;
|
struct iw_priv_args * descr = NULL;
|
struct iw_priv_args * descr = NULL;
|
struct iw_request_info info;
|
struct iw_request_info info;
|
int extra_size = 0;
|
int extra_size = 0;
|
int i;
|
int i;
|
int ret = -EINVAL;
|
int ret = -EINVAL;
|
|
|
/* Get the description of the IOCTL */
|
/* Get the description of the IOCTL */
|
for(i = 0; i < dev->wireless_handlers->num_private_args; i++)
|
for(i = 0; i < dev->wireless_handlers->num_private_args; i++)
|
if(cmd == dev->wireless_handlers->private_args[i].cmd) {
|
if(cmd == dev->wireless_handlers->private_args[i].cmd) {
|
descr = &(dev->wireless_handlers->private_args[i]);
|
descr = &(dev->wireless_handlers->private_args[i]);
|
break;
|
break;
|
}
|
}
|
|
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Found private handler for 0x%04X\n",
|
printk(KERN_DEBUG "%s (WE) : Found private handler for 0x%04X\n",
|
ifr->ifr_name, cmd);
|
ifr->ifr_name, cmd);
|
if(descr) {
|
if(descr) {
|
printk(KERN_DEBUG "%s (WE) : Name %s, set %X, get %X\n",
|
printk(KERN_DEBUG "%s (WE) : Name %s, set %X, get %X\n",
|
dev->name, descr->name,
|
dev->name, descr->name,
|
descr->set_args, descr->get_args);
|
descr->set_args, descr->get_args);
|
}
|
}
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
|
|
/* Compute the size of the set/get arguments */
|
/* Compute the size of the set/get arguments */
|
if(descr != NULL) {
|
if(descr != NULL) {
|
if(IW_IS_SET(cmd)) {
|
if(IW_IS_SET(cmd)) {
|
int offset = 0; /* For sub-ioctls */
|
int offset = 0; /* For sub-ioctls */
|
/* Check for sub-ioctl handler */
|
/* Check for sub-ioctl handler */
|
if(descr->name[0] == '\0')
|
if(descr->name[0] == '\0')
|
/* Reserve one int for sub-ioctl index */
|
/* Reserve one int for sub-ioctl index */
|
offset = sizeof(__u32);
|
offset = sizeof(__u32);
|
|
|
/* Size of set arguments */
|
/* Size of set arguments */
|
extra_size = get_priv_size(descr->set_args);
|
extra_size = get_priv_size(descr->set_args);
|
|
|
/* Does it fits in iwr ? */
|
/* Does it fits in iwr ? */
|
if((descr->set_args & IW_PRIV_SIZE_FIXED) &&
|
if((descr->set_args & IW_PRIV_SIZE_FIXED) &&
|
((extra_size + offset) <= IFNAMSIZ))
|
((extra_size + offset) <= IFNAMSIZ))
|
extra_size = 0;
|
extra_size = 0;
|
} else {
|
} else {
|
/* Size of set arguments */
|
/* Size of set arguments */
|
extra_size = get_priv_size(descr->get_args);
|
extra_size = get_priv_size(descr->get_args);
|
|
|
/* Does it fits in iwr ? */
|
/* Does it fits in iwr ? */
|
if((descr->get_args & IW_PRIV_SIZE_FIXED) &&
|
if((descr->get_args & IW_PRIV_SIZE_FIXED) &&
|
(extra_size <= IFNAMSIZ))
|
(extra_size <= IFNAMSIZ))
|
extra_size = 0;
|
extra_size = 0;
|
}
|
}
|
}
|
}
|
|
|
/* Prepare the call */
|
/* Prepare the call */
|
info.cmd = cmd;
|
info.cmd = cmd;
|
info.flags = 0;
|
info.flags = 0;
|
|
|
/* Check if we have a pointer to user space data or not. */
|
/* Check if we have a pointer to user space data or not. */
|
if(extra_size == 0) {
|
if(extra_size == 0) {
|
/* No extra arguments. Trivial to handle */
|
/* No extra arguments. Trivial to handle */
|
ret = handler(dev, &info, &(iwr->u), (char *) &(iwr->u));
|
ret = handler(dev, &info, &(iwr->u), (char *) &(iwr->u));
|
} else {
|
} else {
|
char * extra;
|
char * extra;
|
int err;
|
int err;
|
|
|
/* Check what user space is giving us */
|
/* Check what user space is giving us */
|
if(IW_IS_SET(cmd)) {
|
if(IW_IS_SET(cmd)) {
|
/* Check NULL pointer */
|
/* Check NULL pointer */
|
if((iwr->u.data.pointer == NULL) &&
|
if((iwr->u.data.pointer == NULL) &&
|
(iwr->u.data.length != 0))
|
(iwr->u.data.length != 0))
|
return -EFAULT;
|
return -EFAULT;
|
|
|
/* Does it fits within bounds ? */
|
/* Does it fits within bounds ? */
|
if(iwr->u.data.length > (descr->set_args &
|
if(iwr->u.data.length > (descr->set_args &
|
IW_PRIV_SIZE_MASK))
|
IW_PRIV_SIZE_MASK))
|
return -E2BIG;
|
return -E2BIG;
|
} else {
|
} else {
|
/* Check NULL pointer */
|
/* Check NULL pointer */
|
if(iwr->u.data.pointer == NULL)
|
if(iwr->u.data.pointer == NULL)
|
return -EFAULT;
|
return -EFAULT;
|
}
|
}
|
|
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Malloc %d bytes\n",
|
printk(KERN_DEBUG "%s (WE) : Malloc %d bytes\n",
|
dev->name, extra_size);
|
dev->name, extra_size);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
|
|
/* Always allocate for max space. Easier, and won't last
|
/* Always allocate for max space. Easier, and won't last
|
* long... */
|
* long... */
|
extra = kmalloc(extra_size, GFP_KERNEL);
|
extra = kmalloc(extra_size, GFP_KERNEL);
|
if (extra == NULL) {
|
if (extra == NULL) {
|
return -ENOMEM;
|
return -ENOMEM;
|
}
|
}
|
|
|
/* If it is a SET, get all the extra data in here */
|
/* If it is a SET, get all the extra data in here */
|
if(IW_IS_SET(cmd) && (iwr->u.data.length != 0)) {
|
if(IW_IS_SET(cmd) && (iwr->u.data.length != 0)) {
|
err = copy_from_user(extra, iwr->u.data.pointer,
|
err = copy_from_user(extra, iwr->u.data.pointer,
|
extra_size);
|
extra_size);
|
if (err) {
|
if (err) {
|
kfree(extra);
|
kfree(extra);
|
return -EFAULT;
|
return -EFAULT;
|
}
|
}
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Got %d elem\n",
|
printk(KERN_DEBUG "%s (WE) : Got %d elem\n",
|
dev->name, iwr->u.data.length);
|
dev->name, iwr->u.data.length);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
}
|
}
|
|
|
/* Call the handler */
|
/* Call the handler */
|
ret = handler(dev, &info, &(iwr->u), extra);
|
ret = handler(dev, &info, &(iwr->u), extra);
|
|
|
/* If we have something to return to the user */
|
/* If we have something to return to the user */
|
if (!ret && IW_IS_GET(cmd)) {
|
if (!ret && IW_IS_GET(cmd)) {
|
err = copy_to_user(iwr->u.data.pointer, extra,
|
err = copy_to_user(iwr->u.data.pointer, extra,
|
extra_size);
|
extra_size);
|
if (err)
|
if (err)
|
ret = -EFAULT;
|
ret = -EFAULT;
|
#ifdef WE_IOCTL_DEBUG
|
#ifdef WE_IOCTL_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Wrote %d elem\n",
|
printk(KERN_DEBUG "%s (WE) : Wrote %d elem\n",
|
dev->name, iwr->u.data.length);
|
dev->name, iwr->u.data.length);
|
#endif /* WE_IOCTL_DEBUG */
|
#endif /* WE_IOCTL_DEBUG */
|
}
|
}
|
|
|
/* Cleanup - I told you it wasn't that long ;-) */
|
/* Cleanup - I told you it wasn't that long ;-) */
|
kfree(extra);
|
kfree(extra);
|
}
|
}
|
|
|
|
|
/* Call commit handler if needed and defined */
|
/* Call commit handler if needed and defined */
|
if(ret == -EIWCOMMIT)
|
if(ret == -EIWCOMMIT)
|
ret = call_commit_handler(dev);
|
ret = call_commit_handler(dev);
|
|
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Main IOCTl dispatcher. Called from the main networking code
|
* Main IOCTl dispatcher. Called from the main networking code
|
* (dev_ioctl() in net/core/dev.c).
|
* (dev_ioctl() in net/core/dev.c).
|
* Check the type of IOCTL and call the appropriate wrapper...
|
* Check the type of IOCTL and call the appropriate wrapper...
|
*/
|
*/
|
int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
|
int wireless_process_ioctl(struct ifreq *ifr, unsigned int cmd)
|
{
|
{
|
struct net_device *dev;
|
struct net_device *dev;
|
iw_handler handler;
|
iw_handler handler;
|
|
|
/* Permissions are already checked in dev_ioctl() before calling us.
|
/* Permissions are already checked in dev_ioctl() before calling us.
|
* The copy_to/from_user() of ifr is also dealt with in there */
|
* The copy_to/from_user() of ifr is also dealt with in there */
|
|
|
/* Make sure the device exist */
|
/* Make sure the device exist */
|
if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL)
|
if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL)
|
return -ENODEV;
|
return -ENODEV;
|
|
|
/* A bunch of special cases, then the generic case...
|
/* A bunch of special cases, then the generic case...
|
* Note that 'cmd' is already filtered in dev_ioctl() with
|
* Note that 'cmd' is already filtered in dev_ioctl() with
|
* (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */
|
* (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) */
|
switch(cmd)
|
switch(cmd)
|
{
|
{
|
case SIOCGIWSTATS:
|
case SIOCGIWSTATS:
|
/* Get Wireless Stats */
|
/* Get Wireless Stats */
|
return dev_iwstats(dev, ifr);
|
return dev_iwstats(dev, ifr);
|
|
|
case SIOCGIWPRIV:
|
case SIOCGIWPRIV:
|
/* Check if we have some wireless handlers defined */
|
/* Check if we have some wireless handlers defined */
|
if(dev->wireless_handlers != NULL) {
|
if(dev->wireless_handlers != NULL) {
|
/* We export to user space the definition of
|
/* We export to user space the definition of
|
* the private handler ourselves */
|
* the private handler ourselves */
|
return ioctl_export_private(dev, ifr);
|
return ioctl_export_private(dev, ifr);
|
}
|
}
|
// ## Fall-through for old API ##
|
// ## Fall-through for old API ##
|
default:
|
default:
|
/* Generic IOCTL */
|
/* Generic IOCTL */
|
/* Basic check */
|
/* Basic check */
|
if (!netif_device_present(dev))
|
if (!netif_device_present(dev))
|
return -ENODEV;
|
return -ENODEV;
|
/* New driver API : try to find the handler */
|
/* New driver API : try to find the handler */
|
handler = get_handler(dev, cmd);
|
handler = get_handler(dev, cmd);
|
if(handler != NULL) {
|
if(handler != NULL) {
|
/* Standard and private are not the same */
|
/* Standard and private are not the same */
|
if(cmd < SIOCIWFIRSTPRIV)
|
if(cmd < SIOCIWFIRSTPRIV)
|
return ioctl_standard_call(dev,
|
return ioctl_standard_call(dev,
|
ifr,
|
ifr,
|
cmd,
|
cmd,
|
handler);
|
handler);
|
else
|
else
|
return ioctl_private_call(dev,
|
return ioctl_private_call(dev,
|
ifr,
|
ifr,
|
cmd,
|
cmd,
|
handler);
|
handler);
|
}
|
}
|
/* Old driver API : call driver ioctl handler */
|
/* Old driver API : call driver ioctl handler */
|
if (dev->do_ioctl) {
|
if (dev->do_ioctl) {
|
return dev->do_ioctl(dev, ifr, cmd);
|
return dev->do_ioctl(dev, ifr, cmd);
|
}
|
}
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
}
|
}
|
/* Not reached */
|
/* Not reached */
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
/************************* EVENT PROCESSING *************************/
|
/************************* EVENT PROCESSING *************************/
|
/*
|
/*
|
* Process events generated by the wireless layer or the driver.
|
* Process events generated by the wireless layer or the driver.
|
* Most often, the event will be propagated through rtnetlink
|
* Most often, the event will be propagated through rtnetlink
|
*/
|
*/
|
|
|
#ifdef WE_EVENT_NETLINK
|
#ifdef WE_EVENT_NETLINK
|
/* "rtnl" is defined in net/core/rtnetlink.c, but we need it here.
|
/* "rtnl" is defined in net/core/rtnetlink.c, but we need it here.
|
* It is declared in <linux/rtnetlink.h> */
|
* It is declared in <linux/rtnetlink.h> */
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Fill a rtnetlink message with our event data.
|
* Fill a rtnetlink message with our event data.
|
* Note that we propage only the specified event and don't dump the
|
* Note that we propage only the specified event and don't dump the
|
* current wireless config. Dumping the wireless config is far too
|
* current wireless config. Dumping the wireless config is far too
|
* expensive (for each parameter, the driver need to query the hardware).
|
* expensive (for each parameter, the driver need to query the hardware).
|
*/
|
*/
|
static inline int rtnetlink_fill_iwinfo(struct sk_buff * skb,
|
static inline int rtnetlink_fill_iwinfo(struct sk_buff * skb,
|
struct net_device * dev,
|
struct net_device * dev,
|
int type,
|
int type,
|
char * event,
|
char * event,
|
int event_len)
|
int event_len)
|
{
|
{
|
struct ifinfomsg *r;
|
struct ifinfomsg *r;
|
struct nlmsghdr *nlh;
|
struct nlmsghdr *nlh;
|
unsigned char *b = skb->tail;
|
unsigned char *b = skb->tail;
|
|
|
nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(*r));
|
nlh = NLMSG_PUT(skb, 0, 0, type, sizeof(*r));
|
r = NLMSG_DATA(nlh);
|
r = NLMSG_DATA(nlh);
|
r->ifi_family = AF_UNSPEC;
|
r->ifi_family = AF_UNSPEC;
|
r->ifi_type = dev->type;
|
r->ifi_type = dev->type;
|
r->ifi_index = dev->ifindex;
|
r->ifi_index = dev->ifindex;
|
r->ifi_flags = dev->flags;
|
r->ifi_flags = dev->flags;
|
r->ifi_change = 0; /* Wireless changes don't affect those flags */
|
r->ifi_change = 0; /* Wireless changes don't affect those flags */
|
|
|
/* Add the wireless events in the netlink packet */
|
/* Add the wireless events in the netlink packet */
|
RTA_PUT(skb, IFLA_WIRELESS,
|
RTA_PUT(skb, IFLA_WIRELESS,
|
event_len, event);
|
event_len, event);
|
|
|
nlh->nlmsg_len = skb->tail - b;
|
nlh->nlmsg_len = skb->tail - b;
|
return skb->len;
|
return skb->len;
|
|
|
nlmsg_failure:
|
nlmsg_failure:
|
rtattr_failure:
|
rtattr_failure:
|
skb_trim(skb, b - skb->data);
|
skb_trim(skb, b - skb->data);
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Create and broadcast and send it on the standard rtnetlink socket
|
* Create and broadcast and send it on the standard rtnetlink socket
|
* This is a pure clone rtmsg_ifinfo() in net/core/rtnetlink.c
|
* This is a pure clone rtmsg_ifinfo() in net/core/rtnetlink.c
|
* Andrzej Krzysztofowicz mandated that I used a IFLA_XXX field
|
* Andrzej Krzysztofowicz mandated that I used a IFLA_XXX field
|
* within a RTM_NEWLINK event.
|
* within a RTM_NEWLINK event.
|
*/
|
*/
|
static inline void rtmsg_iwinfo(struct net_device * dev,
|
static inline void rtmsg_iwinfo(struct net_device * dev,
|
char * event,
|
char * event,
|
int event_len)
|
int event_len)
|
{
|
{
|
struct sk_buff *skb;
|
struct sk_buff *skb;
|
int size = NLMSG_GOODSIZE;
|
int size = NLMSG_GOODSIZE;
|
|
|
skb = alloc_skb(size, GFP_ATOMIC);
|
skb = alloc_skb(size, GFP_ATOMIC);
|
if (!skb)
|
if (!skb)
|
return;
|
return;
|
|
|
if (rtnetlink_fill_iwinfo(skb, dev, RTM_NEWLINK,
|
if (rtnetlink_fill_iwinfo(skb, dev, RTM_NEWLINK,
|
event, event_len) < 0) {
|
event, event_len) < 0) {
|
kfree_skb(skb);
|
kfree_skb(skb);
|
return;
|
return;
|
}
|
}
|
NETLINK_CB(skb).dst_groups = RTMGRP_LINK;
|
NETLINK_CB(skb).dst_groups = RTMGRP_LINK;
|
netlink_broadcast(rtnl, skb, 0, RTMGRP_LINK, GFP_ATOMIC);
|
netlink_broadcast(rtnl, skb, 0, RTMGRP_LINK, GFP_ATOMIC);
|
}
|
}
|
#endif /* WE_EVENT_NETLINK */
|
#endif /* WE_EVENT_NETLINK */
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Main event dispatcher. Called from other parts and drivers.
|
* Main event dispatcher. Called from other parts and drivers.
|
* Send the event on the apropriate channels.
|
* Send the event on the apropriate channels.
|
* May be called from interrupt context.
|
* May be called from interrupt context.
|
*/
|
*/
|
void wireless_send_event(struct net_device * dev,
|
void wireless_send_event(struct net_device * dev,
|
unsigned int cmd,
|
unsigned int cmd,
|
union iwreq_data * wrqu,
|
union iwreq_data * wrqu,
|
char * extra)
|
char * extra)
|
{
|
{
|
const struct iw_ioctl_description * descr = NULL;
|
const struct iw_ioctl_description * descr = NULL;
|
int extra_len = 0;
|
int extra_len = 0;
|
struct iw_event *event; /* Mallocated whole event */
|
struct iw_event *event; /* Mallocated whole event */
|
int event_len; /* Its size */
|
int event_len; /* Its size */
|
int hdr_len; /* Size of the event header */
|
int hdr_len; /* Size of the event header */
|
/* Don't "optimise" the following variable, it will crash */
|
/* Don't "optimise" the following variable, it will crash */
|
unsigned cmd_index; /* *MUST* be unsigned */
|
unsigned cmd_index; /* *MUST* be unsigned */
|
|
|
/* Get the description of the IOCTL */
|
/* Get the description of the IOCTL */
|
if(cmd <= SIOCIWLAST) {
|
if(cmd <= SIOCIWLAST) {
|
cmd_index = cmd - SIOCIWFIRST;
|
cmd_index = cmd - SIOCIWFIRST;
|
if(cmd_index < standard_ioctl_num)
|
if(cmd_index < standard_ioctl_num)
|
descr = &(standard_ioctl[cmd_index]);
|
descr = &(standard_ioctl[cmd_index]);
|
} else {
|
} else {
|
cmd_index = cmd - IWEVFIRST;
|
cmd_index = cmd - IWEVFIRST;
|
if(cmd_index < standard_event_num)
|
if(cmd_index < standard_event_num)
|
descr = &(standard_event[cmd_index]);
|
descr = &(standard_event[cmd_index]);
|
}
|
}
|
/* Don't accept unknown events */
|
/* Don't accept unknown events */
|
if(descr == NULL) {
|
if(descr == NULL) {
|
/* Note : we don't return an error to the driver, because
|
/* Note : we don't return an error to the driver, because
|
* the driver would not know what to do about it. It can't
|
* the driver would not know what to do about it. It can't
|
* return an error to the user, because the event is not
|
* return an error to the user, because the event is not
|
* initiated by a user request.
|
* initiated by a user request.
|
* The best the driver could do is to log an error message.
|
* The best the driver could do is to log an error message.
|
* We will do it ourselves instead...
|
* We will do it ourselves instead...
|
*/
|
*/
|
printk(KERN_ERR "%s (WE) : Invalid/Unknown Wireless Event (0x%04X)\n",
|
printk(KERN_ERR "%s (WE) : Invalid/Unknown Wireless Event (0x%04X)\n",
|
dev->name, cmd);
|
dev->name, cmd);
|
return;
|
return;
|
}
|
}
|
#ifdef WE_EVENT_DEBUG
|
#ifdef WE_EVENT_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Got event 0x%04X\n",
|
printk(KERN_DEBUG "%s (WE) : Got event 0x%04X\n",
|
dev->name, cmd);
|
dev->name, cmd);
|
printk(KERN_DEBUG "%s (WE) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
|
printk(KERN_DEBUG "%s (WE) : Header type : %d, Token type : %d, size : %d, token : %d\n", dev->name, descr->header_type, descr->token_type, descr->token_size, descr->max_tokens);
|
#endif /* WE_EVENT_DEBUG */
|
#endif /* WE_EVENT_DEBUG */
|
|
|
/* Check extra parameters and set extra_len */
|
/* Check extra parameters and set extra_len */
|
if(descr->header_type == IW_HEADER_TYPE_POINT) {
|
if(descr->header_type == IW_HEADER_TYPE_POINT) {
|
/* Check if number of token fits within bounds */
|
/* Check if number of token fits within bounds */
|
if(wrqu->data.length > descr->max_tokens) {
|
if(wrqu->data.length > descr->max_tokens) {
|
printk(KERN_ERR "%s (WE) : Wireless Event too big (%d)\n", dev->name, wrqu->data.length);
|
printk(KERN_ERR "%s (WE) : Wireless Event too big (%d)\n", dev->name, wrqu->data.length);
|
return;
|
return;
|
}
|
}
|
if(wrqu->data.length < descr->min_tokens) {
|
if(wrqu->data.length < descr->min_tokens) {
|
printk(KERN_ERR "%s (WE) : Wireless Event too small (%d)\n", dev->name, wrqu->data.length);
|
printk(KERN_ERR "%s (WE) : Wireless Event too small (%d)\n", dev->name, wrqu->data.length);
|
return;
|
return;
|
}
|
}
|
/* Calculate extra_len - extra is NULL for restricted events */
|
/* Calculate extra_len - extra is NULL for restricted events */
|
if(extra != NULL)
|
if(extra != NULL)
|
extra_len = wrqu->data.length * descr->token_size;
|
extra_len = wrqu->data.length * descr->token_size;
|
#ifdef WE_EVENT_DEBUG
|
#ifdef WE_EVENT_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Event 0x%04X, tokens %d, extra_len %d\n", dev->name, cmd, wrqu->data.length, extra_len);
|
printk(KERN_DEBUG "%s (WE) : Event 0x%04X, tokens %d, extra_len %d\n", dev->name, cmd, wrqu->data.length, extra_len);
|
#endif /* WE_EVENT_DEBUG */
|
#endif /* WE_EVENT_DEBUG */
|
}
|
}
|
|
|
/* Total length of the event */
|
/* Total length of the event */
|
hdr_len = event_type_size[descr->header_type];
|
hdr_len = event_type_size[descr->header_type];
|
event_len = hdr_len + extra_len;
|
event_len = hdr_len + extra_len;
|
|
|
#ifdef WE_EVENT_DEBUG
|
#ifdef WE_EVENT_DEBUG
|
printk(KERN_DEBUG "%s (WE) : Event 0x%04X, hdr_len %d, event_len %d\n", dev->name, cmd, hdr_len, event_len);
|
printk(KERN_DEBUG "%s (WE) : Event 0x%04X, hdr_len %d, event_len %d\n", dev->name, cmd, hdr_len, event_len);
|
#endif /* WE_EVENT_DEBUG */
|
#endif /* WE_EVENT_DEBUG */
|
|
|
/* Create temporary buffer to hold the event */
|
/* Create temporary buffer to hold the event */
|
event = kmalloc(event_len, GFP_ATOMIC);
|
event = kmalloc(event_len, GFP_ATOMIC);
|
if(event == NULL)
|
if(event == NULL)
|
return;
|
return;
|
|
|
/* Fill event */
|
/* Fill event */
|
event->len = event_len;
|
event->len = event_len;
|
event->cmd = cmd;
|
event->cmd = cmd;
|
memcpy(&event->u, wrqu, hdr_len - IW_EV_LCP_LEN);
|
memcpy(&event->u, wrqu, hdr_len - IW_EV_LCP_LEN);
|
if(extra != NULL)
|
if(extra != NULL)
|
memcpy(((char *) event) + hdr_len, extra, extra_len);
|
memcpy(((char *) event) + hdr_len, extra, extra_len);
|
|
|
#ifdef WE_EVENT_NETLINK
|
#ifdef WE_EVENT_NETLINK
|
/* rtnetlink event channel */
|
/* rtnetlink event channel */
|
rtmsg_iwinfo(dev, (char *) event, event_len);
|
rtmsg_iwinfo(dev, (char *) event, event_len);
|
#endif /* WE_EVENT_NETLINK */
|
#endif /* WE_EVENT_NETLINK */
|
|
|
/* Cleanup */
|
/* Cleanup */
|
kfree(event);
|
kfree(event);
|
|
|
return; /* Always success, I guess ;-) */
|
return; /* Always success, I guess ;-) */
|
}
|
}
|
|
|
/********************** ENHANCED IWSPY SUPPORT **********************/
|
/********************** ENHANCED IWSPY SUPPORT **********************/
|
/*
|
/*
|
* In the old days, the driver was handling spy support all by itself.
|
* In the old days, the driver was handling spy support all by itself.
|
* Now, the driver can delegate this task to Wireless Extensions.
|
* Now, the driver can delegate this task to Wireless Extensions.
|
* It needs to use those standard spy iw_handler in struct iw_handler_def,
|
* It needs to use those standard spy iw_handler in struct iw_handler_def,
|
* push data to us via XXX and include struct iw_spy_data in its
|
* push data to us via XXX and include struct iw_spy_data in its
|
* private part.
|
* private part.
|
* One of the main advantage of centralising spy support here is that
|
* One of the main advantage of centralising spy support here is that
|
* it becomes much easier to improve and extend it without having to touch
|
* it becomes much easier to improve and extend it without having to touch
|
* the drivers. One example is the addition of the Spy-Threshold events.
|
* the drivers. One example is the addition of the Spy-Threshold events.
|
* Note : IW_WIRELESS_SPY is defined in iw_handler.h
|
* Note : IW_WIRELESS_SPY is defined in iw_handler.h
|
*/
|
*/
|
|
|
/*------------------------------------------------------------------*/
|
/*------------------------------------------------------------------*/
|
/*
|
/*
|
* Standard Wireless Handler : set Spy List
|
* Standard Wireless Handler : set Spy List
|
*/
|
*/
|
int iw_handler_set_spy(struct net_device * dev,
|
int iw_handler_set_spy(struct net_device * dev,
|
struct iw_request_info * info,
|
struct iw_request_info * info,
|
union iwreq_data * wrqu,
|
union iwreq_data * wrqu,
|
char * extra)
|
char * extra)
|
{
|
{
|
#ifdef IW_WIRELESS_SPY
|
#ifdef IW_WIRELESS_SPY
|
struct iw_spy_data * spydata = (dev->priv +
|
struct iw_spy_data * spydata = (dev->priv +
|
dev->wireless_handlers->spy_offset);
|
dev->wireless_handlers->spy_offset);
|
struct sockaddr * address = (struct sockaddr *) extra;
|
struct sockaddr * address = (struct sockaddr *) extra;
|
|
|
/* Disable spy collection while we copy the addresses.
|
/* Disable spy collection while we copy the addresses.
|
* As we don't disable interrupts, we need to do this to avoid races.
|
* As we don't disable interrupts, we need to do this to avoid races.
|
* As we are the only writer, this is good enough. */
|
* As we are the only writer, this is good enough. */
|
spydata->spy_number = 0;
|
spydata->spy_number = 0;
|
|
|
/* Are there are addresses to copy? */
|
/* Are there are addresses to copy? */
|
if(wrqu->data.length > 0) {
|
if(wrqu->data.length > 0) {
|
int i;
|
int i;
|
|
|
/* Copy addresses */
|
/* Copy addresses */
|
for(i = 0; i < wrqu->data.length; i++)
|
for(i = 0; i < wrqu->data.length; i++)
|
memcpy(spydata->spy_address[i], address[i].sa_data,
|
memcpy(spydata->spy_address[i], address[i].sa_data,
|
ETH_ALEN);
|
ETH_ALEN);
|
/* Reset stats */
|
/* Reset stats */
|
memset(spydata->spy_stat, 0,
|
memset(spydata->spy_stat, 0,
|
sizeof(struct iw_quality) * IW_MAX_SPY);
|
sizeof(struct iw_quality) * IW_MAX_SPY);
|
|
|
#ifdef WE_SPY_DEBUG
|
#ifdef WE_SPY_DEBUG
|
printk(KERN_DEBUG "iw_handler_set_spy() : offset %ld, spydata %p, num %d\n", dev->wireless_handlers->spy_offset, spydata, wrqu->data.length);
|
printk(KERN_DEBUG "iw_handler_set_spy() : offset %ld, spydata %p, num %d\n", dev->wireless_handlers->spy_offset, spydata, wrqu->data.length);
|
for (i = 0; i < wrqu->data.length; i++)
|
for (i = 0; i < wrqu->data.length; i++)
|
printk(KERN_DEBUG
|
printk(KERN_DEBUG
|
"%02X:%02X:%02X:%02X:%02X:%02X \n",
|
"%02X:%02X:%02X:%02X:%02X:%02X \n",
|
spydata->spy_address[i][0],
|
spydata->spy_address[i][0],
|
spydata->spy_address[i][1],
|
spydata->spy_address[i][1],
|
spydata->spy_address[i][2],
|
spydata->spy_address[i][2],
|
spydata->spy_address[i][3],
|
spydata->spy_address[i][3],
|
spydata->spy_address[i][4],
|
spydata->spy_address[i][4],
|
spydata->spy_address[i][5]);
|
spydata->spy_address[i][5]);
|
#endif /* WE_SPY_DEBUG */
|
#endif /* WE_SPY_DEBUG */
|
}
|
}
|
/* Enable addresses */
|
/* Enable addresses */
|
spydata->spy_number = wrqu->data.length;
|
spydata->spy_number = wrqu->data.length;
|
|
|
return 0;
|
return 0;
|
#else /* IW_WIRELESS_SPY */
|
#else /* IW_WIRELESS_SPY */
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
#endif /* IW_WIRELESS_SPY */
|
#endif /* IW_WIRELESS_SPY */
|
}
|
}
|
|
|
/*------------------------------------------------------------------*/
|
/*------------------------------------------------------------------*/
|
/*
|
/*
|
* Standard Wireless Handler : get Spy List
|
* Standard Wireless Handler : get Spy List
|
*/
|
*/
|
int iw_handler_get_spy(struct net_device * dev,
|
int iw_handler_get_spy(struct net_device * dev,
|
struct iw_request_info * info,
|
struct iw_request_info * info,
|
union iwreq_data * wrqu,
|
union iwreq_data * wrqu,
|
char * extra)
|
char * extra)
|
{
|
{
|
#ifdef IW_WIRELESS_SPY
|
#ifdef IW_WIRELESS_SPY
|
struct iw_spy_data * spydata = (dev->priv +
|
struct iw_spy_data * spydata = (dev->priv +
|
dev->wireless_handlers->spy_offset);
|
dev->wireless_handlers->spy_offset);
|
struct sockaddr * address = (struct sockaddr *) extra;
|
struct sockaddr * address = (struct sockaddr *) extra;
|
int i;
|
int i;
|
|
|
wrqu->data.length = spydata->spy_number;
|
wrqu->data.length = spydata->spy_number;
|
|
|
/* Copy addresses. */
|
/* Copy addresses. */
|
for(i = 0; i < spydata->spy_number; i++) {
|
for(i = 0; i < spydata->spy_number; i++) {
|
memcpy(address[i].sa_data, spydata->spy_address[i], ETH_ALEN);
|
memcpy(address[i].sa_data, spydata->spy_address[i], ETH_ALEN);
|
address[i].sa_family = AF_UNIX;
|
address[i].sa_family = AF_UNIX;
|
}
|
}
|
/* Copy stats to the user buffer (just after). */
|
/* Copy stats to the user buffer (just after). */
|
if(spydata->spy_number > 0)
|
if(spydata->spy_number > 0)
|
memcpy(extra + (sizeof(struct sockaddr) *spydata->spy_number),
|
memcpy(extra + (sizeof(struct sockaddr) *spydata->spy_number),
|
spydata->spy_stat,
|
spydata->spy_stat,
|
sizeof(struct iw_quality) * spydata->spy_number);
|
sizeof(struct iw_quality) * spydata->spy_number);
|
/* Reset updated flags. */
|
/* Reset updated flags. */
|
for(i = 0; i < spydata->spy_number; i++)
|
for(i = 0; i < spydata->spy_number; i++)
|
spydata->spy_stat[i].updated = 0;
|
spydata->spy_stat[i].updated = 0;
|
return 0;
|
return 0;
|
#else /* IW_WIRELESS_SPY */
|
#else /* IW_WIRELESS_SPY */
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
#endif /* IW_WIRELESS_SPY */
|
#endif /* IW_WIRELESS_SPY */
|
}
|
}
|
|
|
/*------------------------------------------------------------------*/
|
/*------------------------------------------------------------------*/
|
/*
|
/*
|
* Standard Wireless Handler : set spy threshold
|
* Standard Wireless Handler : set spy threshold
|
*/
|
*/
|
int iw_handler_set_thrspy(struct net_device * dev,
|
int iw_handler_set_thrspy(struct net_device * dev,
|
struct iw_request_info *info,
|
struct iw_request_info *info,
|
union iwreq_data * wrqu,
|
union iwreq_data * wrqu,
|
char * extra)
|
char * extra)
|
{
|
{
|
#ifdef IW_WIRELESS_THRSPY
|
#ifdef IW_WIRELESS_THRSPY
|
struct iw_spy_data * spydata = (dev->priv +
|
struct iw_spy_data * spydata = (dev->priv +
|
dev->wireless_handlers->spy_offset);
|
dev->wireless_handlers->spy_offset);
|
struct iw_thrspy * threshold = (struct iw_thrspy *) extra;
|
struct iw_thrspy * threshold = (struct iw_thrspy *) extra;
|
|
|
/* Just do it */
|
/* Just do it */
|
memcpy(&(spydata->spy_thr_low), &(threshold->low),
|
memcpy(&(spydata->spy_thr_low), &(threshold->low),
|
2 * sizeof(struct iw_quality));
|
2 * sizeof(struct iw_quality));
|
|
|
/* Clear flag */
|
/* Clear flag */
|
memset(spydata->spy_thr_under, '\0', sizeof(spydata->spy_thr_under));
|
memset(spydata->spy_thr_under, '\0', sizeof(spydata->spy_thr_under));
|
|
|
#ifdef WE_SPY_DEBUG
|
#ifdef WE_SPY_DEBUG
|
printk(KERN_DEBUG "iw_handler_set_thrspy() : low %d ; high %d\n", spydata->spy_thr_low.level, spydata->spy_thr_high.level);
|
printk(KERN_DEBUG "iw_handler_set_thrspy() : low %d ; high %d\n", spydata->spy_thr_low.level, spydata->spy_thr_high.level);
|
#endif /* WE_SPY_DEBUG */
|
#endif /* WE_SPY_DEBUG */
|
|
|
return 0;
|
return 0;
|
#else /* IW_WIRELESS_THRSPY */
|
#else /* IW_WIRELESS_THRSPY */
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
#endif /* IW_WIRELESS_THRSPY */
|
#endif /* IW_WIRELESS_THRSPY */
|
}
|
}
|
|
|
/*------------------------------------------------------------------*/
|
/*------------------------------------------------------------------*/
|
/*
|
/*
|
* Standard Wireless Handler : get spy threshold
|
* Standard Wireless Handler : get spy threshold
|
*/
|
*/
|
int iw_handler_get_thrspy(struct net_device * dev,
|
int iw_handler_get_thrspy(struct net_device * dev,
|
struct iw_request_info *info,
|
struct iw_request_info *info,
|
union iwreq_data * wrqu,
|
union iwreq_data * wrqu,
|
char * extra)
|
char * extra)
|
{
|
{
|
#ifdef IW_WIRELESS_THRSPY
|
#ifdef IW_WIRELESS_THRSPY
|
struct iw_spy_data * spydata = (dev->priv +
|
struct iw_spy_data * spydata = (dev->priv +
|
dev->wireless_handlers->spy_offset);
|
dev->wireless_handlers->spy_offset);
|
struct iw_thrspy * threshold = (struct iw_thrspy *) extra;
|
struct iw_thrspy * threshold = (struct iw_thrspy *) extra;
|
|
|
/* Just do it */
|
/* Just do it */
|
memcpy(&(threshold->low), &(spydata->spy_thr_low),
|
memcpy(&(threshold->low), &(spydata->spy_thr_low),
|
2 * sizeof(struct iw_quality));
|
2 * sizeof(struct iw_quality));
|
|
|
return 0;
|
return 0;
|
#else /* IW_WIRELESS_THRSPY */
|
#else /* IW_WIRELESS_THRSPY */
|
return -EOPNOTSUPP;
|
return -EOPNOTSUPP;
|
#endif /* IW_WIRELESS_THRSPY */
|
#endif /* IW_WIRELESS_THRSPY */
|
}
|
}
|
|
|
#ifdef IW_WIRELESS_THRSPY
|
#ifdef IW_WIRELESS_THRSPY
|
/*------------------------------------------------------------------*/
|
/*------------------------------------------------------------------*/
|
/*
|
/*
|
* Prepare and send a Spy Threshold event
|
* Prepare and send a Spy Threshold event
|
*/
|
*/
|
static void iw_send_thrspy_event(struct net_device * dev,
|
static void iw_send_thrspy_event(struct net_device * dev,
|
struct iw_spy_data * spydata,
|
struct iw_spy_data * spydata,
|
unsigned char * address,
|
unsigned char * address,
|
struct iw_quality * wstats)
|
struct iw_quality * wstats)
|
{
|
{
|
union iwreq_data wrqu;
|
union iwreq_data wrqu;
|
struct iw_thrspy threshold;
|
struct iw_thrspy threshold;
|
|
|
/* Init */
|
/* Init */
|
wrqu.data.length = 1;
|
wrqu.data.length = 1;
|
wrqu.data.flags = 0;
|
wrqu.data.flags = 0;
|
/* Copy address */
|
/* Copy address */
|
memcpy(threshold.addr.sa_data, address, ETH_ALEN);
|
memcpy(threshold.addr.sa_data, address, ETH_ALEN);
|
threshold.addr.sa_family = ARPHRD_ETHER;
|
threshold.addr.sa_family = ARPHRD_ETHER;
|
/* Copy stats */
|
/* Copy stats */
|
memcpy(&(threshold.qual), wstats, sizeof(struct iw_quality));
|
memcpy(&(threshold.qual), wstats, sizeof(struct iw_quality));
|
/* Copy also thresholds */
|
/* Copy also thresholds */
|
memcpy(&(threshold.low), &(spydata->spy_thr_low),
|
memcpy(&(threshold.low), &(spydata->spy_thr_low),
|
2 * sizeof(struct iw_quality));
|
2 * sizeof(struct iw_quality));
|
|
|
#ifdef WE_SPY_DEBUG
|
#ifdef WE_SPY_DEBUG
|
printk(KERN_DEBUG "iw_send_thrspy_event() : address %02X:%02X:%02X:%02X:%02X:%02X, level %d, up = %d\n",
|
printk(KERN_DEBUG "iw_send_thrspy_event() : address %02X:%02X:%02X:%02X:%02X:%02X, level %d, up = %d\n",
|
threshold.addr.sa_data[0],
|
threshold.addr.sa_data[0],
|
threshold.addr.sa_data[1],
|
threshold.addr.sa_data[1],
|
threshold.addr.sa_data[2],
|
threshold.addr.sa_data[2],
|
threshold.addr.sa_data[3],
|
threshold.addr.sa_data[3],
|
threshold.addr.sa_data[4],
|
threshold.addr.sa_data[4],
|
threshold.addr.sa_data[5], threshold.qual.level);
|
threshold.addr.sa_data[5], threshold.qual.level);
|
#endif /* WE_SPY_DEBUG */
|
#endif /* WE_SPY_DEBUG */
|
|
|
/* Send event to user space */
|
/* Send event to user space */
|
wireless_send_event(dev, SIOCGIWTHRSPY, &wrqu, (char *) &threshold);
|
wireless_send_event(dev, SIOCGIWTHRSPY, &wrqu, (char *) &threshold);
|
}
|
}
|
#endif /* IW_WIRELESS_THRSPY */
|
#endif /* IW_WIRELESS_THRSPY */
|
|
|
/* ---------------------------------------------------------------- */
|
/* ---------------------------------------------------------------- */
|
/*
|
/*
|
* Call for the driver to update the spy data.
|
* Call for the driver to update the spy data.
|
* For now, the spy data is a simple array. As the size of the array is
|
* For now, the spy data is a simple array. As the size of the array is
|
* small, this is good enough. If we wanted to support larger number of
|
* small, this is good enough. If we wanted to support larger number of
|
* spy addresses, we should use something more efficient...
|
* spy addresses, we should use something more efficient...
|
*/
|
*/
|
void wireless_spy_update(struct net_device * dev,
|
void wireless_spy_update(struct net_device * dev,
|
unsigned char * address,
|
unsigned char * address,
|
struct iw_quality * wstats)
|
struct iw_quality * wstats)
|
{
|
{
|
#ifdef IW_WIRELESS_SPY
|
#ifdef IW_WIRELESS_SPY
|
struct iw_spy_data * spydata = (dev->priv +
|
struct iw_spy_data * spydata = (dev->priv +
|
dev->wireless_handlers->spy_offset);
|
dev->wireless_handlers->spy_offset);
|
int i;
|
int i;
|
int match = -1;
|
int match = -1;
|
|
|
#ifdef WE_SPY_DEBUG
|
#ifdef WE_SPY_DEBUG
|
printk(KERN_DEBUG "wireless_spy_update() : offset %ld, spydata %p, address %02X:%02X:%02X:%02X:%02X:%02X\n", dev->wireless_handlers->spy_offset, spydata, address[0], address[1], address[2], address[3], address[4], address[5]);
|
printk(KERN_DEBUG "wireless_spy_update() : offset %ld, spydata %p, address %02X:%02X:%02X:%02X:%02X:%02X\n", dev->wireless_handlers->spy_offset, spydata, address[0], address[1], address[2], address[3], address[4], address[5]);
|
#endif /* WE_SPY_DEBUG */
|
#endif /* WE_SPY_DEBUG */
|
|
|
/* Update all records that match */
|
/* Update all records that match */
|
for(i = 0; i < spydata->spy_number; i++)
|
for(i = 0; i < spydata->spy_number; i++)
|
if(!memcmp(address, spydata->spy_address[i], ETH_ALEN)) {
|
if(!memcmp(address, spydata->spy_address[i], ETH_ALEN)) {
|
memcpy(&(spydata->spy_stat[i]), wstats,
|
memcpy(&(spydata->spy_stat[i]), wstats,
|
sizeof(struct iw_quality));
|
sizeof(struct iw_quality));
|
match = i;
|
match = i;
|
}
|
}
|
#ifdef IW_WIRELESS_THRSPY
|
#ifdef IW_WIRELESS_THRSPY
|
/* Generate an event if we cross the spy threshold.
|
/* Generate an event if we cross the spy threshold.
|
* To avoid event storms, we have a simple hysteresis : we generate
|
* To avoid event storms, we have a simple hysteresis : we generate
|
* event only when we go under the low threshold or above the
|
* event only when we go under the low threshold or above the
|
* high threshold. */
|
* high threshold. */
|
if(match >= 0) {
|
if(match >= 0) {
|
if(spydata->spy_thr_under[match]) {
|
if(spydata->spy_thr_under[match]) {
|
if(wstats->level > spydata->spy_thr_high.level) {
|
if(wstats->level > spydata->spy_thr_high.level) {
|
spydata->spy_thr_under[match] = 0;
|
spydata->spy_thr_under[match] = 0;
|
iw_send_thrspy_event(dev, spydata,
|
iw_send_thrspy_event(dev, spydata,
|
address, wstats);
|
address, wstats);
|
}
|
}
|
} else {
|
} else {
|
if(wstats->level < spydata->spy_thr_low.level) {
|
if(wstats->level < spydata->spy_thr_low.level) {
|
spydata->spy_thr_under[match] = 1;
|
spydata->spy_thr_under[match] = 1;
|
iw_send_thrspy_event(dev, spydata,
|
iw_send_thrspy_event(dev, spydata,
|
address, wstats);
|
address, wstats);
|
}
|
}
|
}
|
}
|
}
|
}
|
#endif /* IW_WIRELESS_THRSPY */
|
#endif /* IW_WIRELESS_THRSPY */
|
#endif /* IW_WIRELESS_SPY */
|
#endif /* IW_WIRELESS_SPY */
|
}
|
}
|
|
|
