8318d78a44
This patch creates new cfg80211 wiphy API for channel and bitrate registration and converts mac80211 and drivers to the new API. The old mac80211 API is completely ripped out. All drivers (except ath5k) are updated to the new API, in many cases I expect that optimisations can be done. Along with the regulatory code I've also ripped out the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag, I believe it to be unnecessary if the hardware simply gives us whatever channels it wants to support and we then enable/disable them as required, which is pretty much required for travelling. Additionally, the patch adds proper "basic" rate handling for STA mode interface, AP mode interface will have to have new API added to allow userspace to set the basic rate set, currently it'll be empty... However, the basic rate handling will need to be moved to the BSS conf stuff. I do expect there to be bugs in this, especially wrt. transmit power handling where I'm basically clueless about how it should work. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
101 lines
3 KiB
C
101 lines
3 KiB
C
/* ZD1211 USB-WLAN driver for Linux
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*
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* Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
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* Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* In the long term, we'll probably find a better way of handling regulatory
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* requirements outside of the driver.
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*/
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#include <linux/kernel.h>
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#include <net/mac80211.h>
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#include "zd_ieee80211.h"
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#include "zd_mac.h"
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struct channel_range {
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u8 regdomain;
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u8 start;
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u8 end; /* exclusive (channel must be less than end) */
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};
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static const struct channel_range channel_ranges[] = {
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{ ZD_REGDOMAIN_FCC, 1, 12 },
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{ ZD_REGDOMAIN_IC, 1, 12 },
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{ ZD_REGDOMAIN_ETSI, 1, 14 },
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{ ZD_REGDOMAIN_JAPAN, 1, 14 },
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{ ZD_REGDOMAIN_SPAIN, 1, 14 },
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{ ZD_REGDOMAIN_FRANCE, 1, 14 },
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/* Japan originally only had channel 14 available (see CHNL_ID 0x40 in
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* 802.11). However, in 2001 the range was extended to include channels
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* 1-13. The ZyDAS devices still use the old region code but are
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* designed to allow the extra channel access in Japan. */
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{ ZD_REGDOMAIN_JAPAN_ADD, 1, 15 },
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};
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static const struct channel_range *zd_channel_range(u8 regdomain)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) {
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const struct channel_range *range = &channel_ranges[i];
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if (range->regdomain == regdomain)
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return range;
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}
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return NULL;
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}
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#define CHAN_TO_IDX(chan) ((chan) - 1)
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static void unmask_bg_channels(struct ieee80211_hw *hw,
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const struct channel_range *range,
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struct ieee80211_supported_band *sband)
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{
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u8 channel;
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for (channel = range->start; channel < range->end; channel++) {
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struct ieee80211_channel *chan =
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&sband->channels[CHAN_TO_IDX(channel)];
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chan->flags = 0;
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}
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}
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void zd_geo_init(struct ieee80211_hw *hw, u8 regdomain)
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{
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struct zd_mac *mac = zd_hw_mac(hw);
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const struct channel_range *range;
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dev_dbg(zd_mac_dev(mac), "regdomain %#02x\n", regdomain);
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range = zd_channel_range(regdomain);
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if (!range) {
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/* The vendor driver overrides the regulatory domain and
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* allowed channel registers and unconditionally restricts
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* available channels to 1-11 everywhere. Match their
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* questionable behaviour only for regdomains which we don't
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* recognise. */
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dev_warn(zd_mac_dev(mac), "Unrecognised regulatory domain: "
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"%#02x. Defaulting to FCC.\n", regdomain);
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range = zd_channel_range(ZD_REGDOMAIN_FCC);
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}
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unmask_bg_channels(hw, range, &mac->band);
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}
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