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cc32abd494
The channel switch code is currently in the spectrum management file, where arguably it belongs. However, it is for managed mode only and uses the structures for that mode only so having it in a more generic file can be confusing. Additionally, my next patch gets simpler with the code here. When/if we ever implement this for IBSS or mesh then we will need to rework the structures it uses anyway at which point we could move the code back. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
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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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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_tx_skb(sdata, skb, 1);
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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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