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87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
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/*
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* spectrum management
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*
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* Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
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* Copyright 2002-2005, Instant802 Networks, Inc.
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* Copyright 2005-2006, Devicescape Software, Inc.
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* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
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* Copyright 2007-2008, Intel Corporation
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* Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/ieee80211.h>
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#include <net/wireless.h>
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "sta_info.h"
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#include "wme.h"
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static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_msrment_ie *request_ie,
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const u8 *da, const u8 *bssid,
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u8 dialog_token)
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{
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struct ieee80211_local *local = sdata->local;
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struct sk_buff *skb;
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struct ieee80211_mgmt *msr_report;
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skb = dev_alloc_skb(sizeof(*msr_report) + local->hw.extra_tx_headroom +
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sizeof(struct ieee80211_msrment_ie));
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if (!skb) {
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printk(KERN_ERR "%s: failed to allocate buffer for "
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"measurement report frame\n", sdata->dev->name);
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return;
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}
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skb_reserve(skb, local->hw.extra_tx_headroom);
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msr_report = (struct ieee80211_mgmt *)skb_put(skb, 24);
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memset(msr_report, 0, 24);
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memcpy(msr_report->da, da, ETH_ALEN);
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memcpy(msr_report->sa, sdata->dev->dev_addr, ETH_ALEN);
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memcpy(msr_report->bssid, bssid, ETH_ALEN);
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msr_report->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
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IEEE80211_STYPE_ACTION);
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skb_put(skb, 1 + sizeof(msr_report->u.action.u.measurement));
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msr_report->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
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msr_report->u.action.u.measurement.action_code =
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WLAN_ACTION_SPCT_MSR_RPRT;
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msr_report->u.action.u.measurement.dialog_token = dialog_token;
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msr_report->u.action.u.measurement.element_id = WLAN_EID_MEASURE_REPORT;
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msr_report->u.action.u.measurement.length =
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sizeof(struct ieee80211_msrment_ie);
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memset(&msr_report->u.action.u.measurement.msr_elem, 0,
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sizeof(struct ieee80211_msrment_ie));
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msr_report->u.action.u.measurement.msr_elem.token = request_ie->token;
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msr_report->u.action.u.measurement.msr_elem.mode |=
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IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED;
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msr_report->u.action.u.measurement.msr_elem.type = request_ie->type;
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ieee80211_sta_tx(sdata, skb, 0);
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}
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void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
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struct ieee80211_mgmt *mgmt,
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size_t len)
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{
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/*
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* Ignoring measurement request is spec violation.
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* Mandatory measurements must be reported optional
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* measurements might be refused or reported incapable
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* For now just refuse
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* TODO: Answer basic measurement as unmeasured
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*/
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ieee80211_send_refuse_measurement_request(sdata,
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&mgmt->u.action.u.measurement.msr_elem,
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mgmt->sa, mgmt->bssid,
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mgmt->u.action.u.measurement.dialog_token);
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}
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