/*
   * spectrum management
   *
   * Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
   * Copyright 2002-2005, Instant802 Networks, Inc.
   * Copyright 2005-2006, Devicescape Software, Inc.
   * Copyright 2006-2007  Jiri Benc <jbenc@suse.cz>
   * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
   * Copyright 2007-2008, Intel Corporation
   * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/ieee80211.h>

  #include <net/cfg80211.h>

  #include <net/mac80211.h>
  #include "ieee80211_i.h"
  #include "sta_info.h"
  #include "wme.h"
  
  static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
  					struct ieee80211_msrment_ie *request_ie,
  					const u8 *da, const u8 *bssid,
  					u8 dialog_token)
  {
  	struct ieee80211_local *local = sdata->local;
  	struct sk_buff *skb;
  	struct ieee80211_mgmt *msr_report;
  
  	skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
  				sizeof(struct ieee80211_msrment_ie));

  	if (!skb)

  		return;

  
  	skb_reserve(skb, local->hw.extra_tx_headroom);
  	msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
  	memset(msr_report, 0, 24);
  	memcpy(msr_report->da, da, ETH_ALEN);

  	memcpy(msr_report->sa, sdata->vif.addr, ETH_ALEN);

  	memcpy(msr_report->bssid, bssid, ETH_ALEN);
  	msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
  						IEEE80211_STYPE_ACTION);
  
  	skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
  	msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
  	msr_report->u.action.u.measurement.action_code =
  				WLAN_ACTION_SPCT_MSR_RPRT;
  	msr_report->u.action.u.measurement.dialog_token = dialog_token;
  
  	msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
  	msr_report->u.action.u.measurement.length =
  			sizeof(struct ieee80211_msrment_ie);
  
  	memset(&msr_report->u.action.u.measurement.msr_elem, 0,
  		sizeof(struct ieee80211_msrment_ie));
  	msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
  	msr_report->u.action.u.measurement.msr_elem.mode |=
  			IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
  	msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;

  	ieee80211_tx_skb(sdata, skb);

  }
  
  void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
  				       struct ieee80211_mgmt *mgmt,
  				       size_t len)
  {
  	/*
  	 * Ignoring measurement request is spec violation.
  	 * Mandatory measurements must be reported optional
  	 * measurements might be refused or reported incapable
  	 * For now just refuse
  	 * TODO: Answer basic measurement as unmeasured
  	 */
  	ieee80211_send_refuse_measurement_request(sdata,
  			&mgmt->u.action.u.measurement.msr_elem,
  			mgmt->sa, mgmt->bssid,
  			mgmt->u.action.u.measurement.dialog_token);
  }