87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
|
/*
|
||
|
|
* 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/wireless.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) {
|
||
|
|
printk(KERN_ERR "%s: failed to allocate buffer for "
|
||
|
|
"measurement report frame\n", sdata->dev->name);
|
||
|
|
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->dev->dev_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_sta_tx(sdata, skb, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|