forked from Minki/linux
6d92f83ffa
The 802.11 specs state that deauthenticating also implies disassociating. This patch implements that, which improve the behaviour of SIOCSIWMLME. Signed-off-by: Daniel Drake <dsd@gentoo.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
466 lines
12 KiB
C
466 lines
12 KiB
C
/*
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* This file contains our _wx handlers. Make sure you EXPORT_SYMBOL_GPL them
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*
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* Copyright (c) 2005, 2006 Johannes Berg <johannes@sipsolutions.net>
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* Joseph Jezak <josejx@gentoo.org>
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* Larry Finger <Larry.Finger@lwfinger.net>
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* Danny van Dyk <kugelfang@gentoo.org>
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* Michael Buesch <mbuesch@freenet.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called COPYING.
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*/
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#include "ieee80211softmac_priv.h"
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#include <net/iw_handler.h>
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/* for is_broadcast_ether_addr and is_zero_ether_addr */
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#include <linux/etherdevice.h>
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int
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ieee80211softmac_wx_trigger_scan(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
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return ieee80211softmac_start_scan(sm);
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_trigger_scan);
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/* if we're still scanning, return -EAGAIN so that userspace tools
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* can get the complete scan results, otherwise return 0. */
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int
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ieee80211softmac_wx_get_scan_results(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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unsigned long flags;
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struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
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spin_lock_irqsave(&sm->lock, flags);
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if (sm->scanning) {
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spin_unlock_irqrestore(&sm->lock, flags);
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return -EAGAIN;
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}
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spin_unlock_irqrestore(&sm->lock, flags);
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return ieee80211_wx_get_scan(sm->ieee, info, data, extra);
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_scan_results);
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int
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ieee80211softmac_wx_set_essid(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
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int length = 0;
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unsigned long flags;
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spin_lock_irqsave(&sm->lock, flags);
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sm->associnfo.static_essid = 0;
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if (data->essid.flags && data->essid.length && extra /*required?*/) {
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length = min(data->essid.length - 1, IW_ESSID_MAX_SIZE);
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if (length) {
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memcpy(sm->associnfo.req_essid.data, extra, length);
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sm->associnfo.static_essid = 1;
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}
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}
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/* set our requested ESSID length.
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* If applicable, we have already copied the data in */
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sm->associnfo.req_essid.len = length;
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/* queue lower level code to do work (if necessary) */
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schedule_work(&sm->associnfo.work);
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spin_unlock_irqrestore(&sm->lock, flags);
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return 0;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_essid);
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int
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ieee80211softmac_wx_get_essid(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
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unsigned long flags;
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/* avoid getting inconsistent information */
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spin_lock_irqsave(&sm->lock, flags);
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/* If all fails, return ANY (empty) */
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data->essid.length = 0;
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data->essid.flags = 0; /* active */
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/* If we have a statically configured ESSID then return it */
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if (sm->associnfo.static_essid) {
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data->essid.length = sm->associnfo.req_essid.len;
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data->essid.flags = 1; /* active */
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memcpy(extra, sm->associnfo.req_essid.data, sm->associnfo.req_essid.len);
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}
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/* If we're associating/associated, return that */
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if (sm->associated || sm->associnfo.associating) {
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data->essid.length = sm->associnfo.associate_essid.len;
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data->essid.flags = 1; /* active */
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memcpy(extra, sm->associnfo.associate_essid.data, sm->associnfo.associate_essid.len);
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}
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spin_unlock_irqrestore(&sm->lock, flags);
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return 0;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_essid);
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int
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ieee80211softmac_wx_set_rate(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
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struct ieee80211_device *ieee = mac->ieee;
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unsigned long flags;
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s32 in_rate = data->bitrate.value;
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u8 rate;
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int is_ofdm = 0;
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int err = -EINVAL;
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if (in_rate == -1) {
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/* FIXME: We don't correctly handle backing down to lower
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rates, so 801.11g devices start off at 11M for now. People
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can manually change it if they really need to, but 11M is
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more reliable. Note similar logic in
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ieee80211softmac_wx_set_rate() */
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if (ieee->modulation & IEEE80211_CCK_MODULATION)
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in_rate = 11000000;
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else
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in_rate = 54000000;
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}
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switch (in_rate) {
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case 1000000:
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rate = IEEE80211_CCK_RATE_1MB;
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break;
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case 2000000:
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rate = IEEE80211_CCK_RATE_2MB;
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break;
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case 5500000:
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rate = IEEE80211_CCK_RATE_5MB;
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break;
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case 11000000:
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rate = IEEE80211_CCK_RATE_11MB;
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break;
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case 6000000:
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rate = IEEE80211_OFDM_RATE_6MB;
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is_ofdm = 1;
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break;
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case 9000000:
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rate = IEEE80211_OFDM_RATE_9MB;
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is_ofdm = 1;
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break;
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case 12000000:
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rate = IEEE80211_OFDM_RATE_12MB;
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is_ofdm = 1;
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break;
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case 18000000:
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rate = IEEE80211_OFDM_RATE_18MB;
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is_ofdm = 1;
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break;
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case 24000000:
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rate = IEEE80211_OFDM_RATE_24MB;
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is_ofdm = 1;
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break;
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case 36000000:
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rate = IEEE80211_OFDM_RATE_36MB;
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is_ofdm = 1;
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break;
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case 48000000:
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rate = IEEE80211_OFDM_RATE_48MB;
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is_ofdm = 1;
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break;
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case 54000000:
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rate = IEEE80211_OFDM_RATE_54MB;
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is_ofdm = 1;
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break;
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default:
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goto out;
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}
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spin_lock_irqsave(&mac->lock, flags);
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/* Check if correct modulation for this PHY. */
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if (is_ofdm && !(ieee->modulation & IEEE80211_OFDM_MODULATION))
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goto out_unlock;
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mac->txrates.default_rate = rate;
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mac->txrates.default_fallback = lower_rate(mac, rate);
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err = 0;
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out_unlock:
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spin_unlock_irqrestore(&mac->lock, flags);
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out:
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return err;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_rate);
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int
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ieee80211softmac_wx_get_rate(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
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unsigned long flags;
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int err = -EINVAL;
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spin_lock_irqsave(&mac->lock, flags);
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switch (mac->txrates.default_rate) {
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case IEEE80211_CCK_RATE_1MB:
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data->bitrate.value = 1000000;
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break;
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case IEEE80211_CCK_RATE_2MB:
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data->bitrate.value = 2000000;
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break;
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case IEEE80211_CCK_RATE_5MB:
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data->bitrate.value = 5500000;
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break;
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case IEEE80211_CCK_RATE_11MB:
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data->bitrate.value = 11000000;
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break;
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case IEEE80211_OFDM_RATE_6MB:
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data->bitrate.value = 6000000;
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break;
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case IEEE80211_OFDM_RATE_9MB:
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data->bitrate.value = 9000000;
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break;
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case IEEE80211_OFDM_RATE_12MB:
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data->bitrate.value = 12000000;
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break;
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case IEEE80211_OFDM_RATE_18MB:
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data->bitrate.value = 18000000;
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break;
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case IEEE80211_OFDM_RATE_24MB:
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data->bitrate.value = 24000000;
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break;
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case IEEE80211_OFDM_RATE_36MB:
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data->bitrate.value = 36000000;
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break;
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case IEEE80211_OFDM_RATE_48MB:
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data->bitrate.value = 48000000;
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break;
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case IEEE80211_OFDM_RATE_54MB:
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data->bitrate.value = 54000000;
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break;
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default:
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assert(0);
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goto out_unlock;
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}
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err = 0;
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out_unlock:
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spin_unlock_irqrestore(&mac->lock, flags);
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return err;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_rate);
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int
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ieee80211softmac_wx_get_wap(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
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int err = 0;
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unsigned long flags;
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spin_lock_irqsave(&mac->lock, flags);
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if (mac->associnfo.bssvalid)
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memcpy(data->ap_addr.sa_data, mac->associnfo.bssid, ETH_ALEN);
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else
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memset(data->ap_addr.sa_data, 0xff, ETH_ALEN);
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data->ap_addr.sa_family = ARPHRD_ETHER;
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spin_unlock_irqrestore(&mac->lock, flags);
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return err;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_wap);
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int
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ieee80211softmac_wx_set_wap(struct net_device *net_dev,
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struct iw_request_info *info,
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union iwreq_data *data,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(net_dev);
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unsigned long flags;
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/* sanity check */
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if (data->ap_addr.sa_family != ARPHRD_ETHER) {
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return -EINVAL;
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}
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spin_lock_irqsave(&mac->lock, flags);
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if (is_broadcast_ether_addr(data->ap_addr.sa_data)) {
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/* the bssid we have is not to be fixed any longer,
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* and we should reassociate to the best AP. */
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mac->associnfo.bssfixed = 0;
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/* force reassociation */
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mac->associnfo.bssvalid = 0;
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if (mac->associated)
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schedule_work(&mac->associnfo.work);
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} else if (is_zero_ether_addr(data->ap_addr.sa_data)) {
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/* the bssid we have is no longer fixed */
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mac->associnfo.bssfixed = 0;
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} else {
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if (!memcmp(mac->associnfo.bssid, data->ap_addr.sa_data, ETH_ALEN)) {
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if (mac->associnfo.associating || mac->associated) {
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/* bssid unchanged and associated or associating - just return */
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goto out;
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}
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} else {
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/* copy new value in data->ap_addr.sa_data to bssid */
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memcpy(mac->associnfo.bssid, data->ap_addr.sa_data, ETH_ALEN);
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}
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/* tell the other code that this bssid should be used no matter what */
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mac->associnfo.bssfixed = 1;
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/* queue associate if new bssid or (old one again and not associated) */
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schedule_work(&mac->associnfo.work);
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}
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out:
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spin_unlock_irqrestore(&mac->lock, flags);
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return 0;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_wap);
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int
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ieee80211softmac_wx_set_genie(struct net_device *dev,
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struct iw_request_info *info,
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union iwreq_data *wrqu,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(dev);
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unsigned long flags;
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int err = 0;
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char *buf;
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int i;
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spin_lock_irqsave(&mac->lock, flags);
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/* bleh. shouldn't be locked for that kmalloc... */
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if (wrqu->data.length) {
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if ((wrqu->data.length < 2) || (extra[1]+2 != wrqu->data.length)) {
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/* this is an IE, so the length must be
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* correct. Is it possible though that
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* more than one IE is passed in?
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*/
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err = -EINVAL;
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goto out;
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}
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if (mac->wpa.IEbuflen <= wrqu->data.length) {
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buf = kmalloc(wrqu->data.length, GFP_ATOMIC);
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if (!buf) {
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err = -ENOMEM;
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goto out;
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}
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kfree(mac->wpa.IE);
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mac->wpa.IE = buf;
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mac->wpa.IEbuflen = wrqu->data.length;
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}
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memcpy(mac->wpa.IE, extra, wrqu->data.length);
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dprintk(KERN_INFO PFX "generic IE set to ");
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for (i=0;i<wrqu->data.length;i++)
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dprintk("%.2x", mac->wpa.IE[i]);
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dprintk("\n");
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mac->wpa.IElen = wrqu->data.length;
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} else {
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kfree(mac->wpa.IE);
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mac->wpa.IE = NULL;
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mac->wpa.IElen = 0;
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mac->wpa.IEbuflen = 0;
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}
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out:
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spin_unlock_irqrestore(&mac->lock, flags);
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return err;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_genie);
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int
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ieee80211softmac_wx_get_genie(struct net_device *dev,
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struct iw_request_info *info,
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union iwreq_data *wrqu,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(dev);
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unsigned long flags;
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int err = 0;
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int space = wrqu->data.length;
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spin_lock_irqsave(&mac->lock, flags);
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wrqu->data.length = 0;
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if (mac->wpa.IE && mac->wpa.IElen) {
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wrqu->data.length = mac->wpa.IElen;
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if (mac->wpa.IElen <= space)
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memcpy(extra, mac->wpa.IE, mac->wpa.IElen);
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else
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err = -E2BIG;
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}
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spin_unlock_irqrestore(&mac->lock, flags);
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return err;
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_genie);
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int
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ieee80211softmac_wx_set_mlme(struct net_device *dev,
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struct iw_request_info *info,
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union iwreq_data *wrqu,
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char *extra)
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{
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struct ieee80211softmac_device *mac = ieee80211_priv(dev);
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struct iw_mlme *mlme = (struct iw_mlme *)extra;
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u16 reason = cpu_to_le16(mlme->reason_code);
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struct ieee80211softmac_network *net;
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if (memcmp(mac->associnfo.bssid, mlme->addr.sa_data, ETH_ALEN)) {
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printk(KERN_DEBUG PFX "wx_set_mlme: requested operation on net we don't use\n");
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return -EINVAL;
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}
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switch (mlme->cmd) {
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case IW_MLME_DEAUTH:
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net = ieee80211softmac_get_network_by_bssid_locked(mac, mlme->addr.sa_data);
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if (!net) {
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printk(KERN_DEBUG PFX "wx_set_mlme: we should know the net here...\n");
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return -EINVAL;
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}
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return ieee80211softmac_deauth_req(mac, net, reason);
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case IW_MLME_DISASSOC:
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ieee80211softmac_send_disassoc_req(mac, reason);
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return 0;
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default:
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return -EOPNOTSUPP;
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}
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}
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EXPORT_SYMBOL_GPL(ieee80211softmac_wx_set_mlme);
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