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Viewing changes to net/mac80211/spectmgmt.c

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-tz023xykf0i6eosh
Tags: upstream-3.2.0
Import upstream version 3.2.0

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net/mac80211/spectmgmt.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/cfg80211.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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                return;
 
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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->vif.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_tx_skb(sdata, skb);
 
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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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}