ba2f8c1875
Below patch was developed after discussion with Daniel Drake who mentioned to me that wireless tools expect an EAGAIN return from getscan so that they can wait for the scan to finish before printing out the results. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
427 lines
11 KiB
C
427 lines
11 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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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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sm->associnfo.scan_retry = IEEE80211SOFTMAC_ASSOC_SCAN_RETRY_LIMIT;
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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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static const unsigned char any[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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static const unsigned char off[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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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 (!memcmp(any, data->ap_addr.sa_data, ETH_ALEN) ||
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!memcmp(off, data->ap_addr.sa_data, ETH_ALEN)) {
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schedule_work(&mac->associnfo.work);
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goto out;
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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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/* 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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