Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 | /*
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
Module: rt2x00lib
Abstract: rt2x00 generic configuration routines.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev,
struct rt2x00_intf *intf,
enum nl80211_iftype type,
const u8 *mac, const u8 *bssid)
{
struct rt2x00intf_conf conf;
unsigned int flags = 0;
conf.type = type;
switch (type) {
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_WDS:
conf.sync = TSF_SYNC_BEACON;
break;
case NL80211_IFTYPE_STATION:
conf.sync = TSF_SYNC_INFRA;
break;
default:
conf.sync = TSF_SYNC_NONE;
break;
}
/*
* Note that when NULL is passed as address we will send
* 00:00:00:00:00 to the device to clear the address.
* This will prevent the device being confused when it wants
* to ACK frames or consideres itself associated.
*/
memset(&conf.mac, 0, sizeof(conf.mac));
if (mac)
memcpy(&conf.mac, mac, ETH_ALEN);
memset(&conf.bssid, 0, sizeof(conf.bssid));
if (bssid)
memcpy(&conf.bssid, bssid, ETH_ALEN);
flags |= CONFIG_UPDATE_TYPE;
if (mac || (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
flags |= CONFIG_UPDATE_MAC;
if (bssid || (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
flags |= CONFIG_UPDATE_BSSID;
rt2x00dev->ops->lib->config_intf(rt2x00dev, intf, &conf, flags);
}
void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
struct rt2x00_intf *intf,
struct ieee80211_bss_conf *bss_conf)
{
struct rt2x00lib_erp erp;
memset(&erp, 0, sizeof(erp));
erp.short_preamble = bss_conf->use_short_preamble;
erp.cts_protection = bss_conf->use_cts_prot;
erp.slot_time = bss_conf->use_short_slot ? SHORT_SLOT_TIME : SLOT_TIME;
erp.sifs = SIFS;
erp.pifs = bss_conf->use_short_slot ? SHORT_PIFS : PIFS;
erp.difs = bss_conf->use_short_slot ? SHORT_DIFS : DIFS;
erp.eifs = bss_conf->use_short_slot ? SHORT_EIFS : EIFS;
erp.basic_rates = bss_conf->basic_rates;
erp.beacon_int = bss_conf->beacon_int;
/* Update global beacon interval time, this is needed for PS support */
rt2x00dev->beacon_int = bss_conf->beacon_int;
rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp);
}
static inline
enum antenna rt2x00lib_config_antenna_check(enum antenna current_ant,
enum antenna default_ant)
{
if (current_ant != ANTENNA_SW_DIVERSITY)
return current_ant;
return (default_ant != ANTENNA_SW_DIVERSITY) ? default_ant : ANTENNA_B;
}
void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
struct antenna_setup config)
{
struct link_ant *ant = &rt2x00dev->link.ant;
struct antenna_setup *def = &rt2x00dev->default_ant;
struct antenna_setup *active = &rt2x00dev->link.ant.active;
/*
* Failsafe: Make sure we are not sending the
* ANTENNA_SW_DIVERSITY state to the driver.
* If that happens, fallback to hardware defaults,
* or our own default.
* If diversity handling is active for a particular antenna,
* we shouldn't overwrite that antenna.
* The calls to rt2x00lib_config_antenna_check()
* might have caused that we restore back to the already
* active setting. If that has happened we can quit.
*/
if (!(ant->flags & ANTENNA_RX_DIVERSITY))
config.rx = rt2x00lib_config_antenna_check(config.rx, def->rx);
else
config.rx = active->rx;
if (!(ant->flags & ANTENNA_TX_DIVERSITY))
config.tx = rt2x00lib_config_antenna_check(config.tx, def->tx);
else
config.tx = active->tx;
if (config.rx == active->rx && config.tx == active->tx)
return;
/*
* Antenna setup changes require the RX to be disabled,
* else the changes will be ignored by the device.
*/
if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
/*
* Write new antenna setup to device and reset the link tuner.
* The latter is required since we need to recalibrate the
* noise-sensitivity ratio for the new setup.
*/
rt2x00dev->ops->lib->config_ant(rt2x00dev, &config);
rt2x00link_reset_tuner(rt2x00dev, true);
memcpy(active, &config, sizeof(config));
if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
}
void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
struct ieee80211_conf *conf,
unsigned int ieee80211_flags)
{
struct rt2x00lib_conf libconf;
memset(&libconf, 0, sizeof(libconf));
libconf.conf = conf;
if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) {
if (conf_is_ht40(conf))
__set_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
else
__clear_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
memcpy(&libconf.rf,
&rt2x00dev->spec.channels[conf->channel->hw_value],
sizeof(libconf.rf));
memcpy(&libconf.channel,
&rt2x00dev->spec.channels_info[conf->channel->hw_value],
sizeof(libconf.channel));
}
/*
* Start configuration.
*/
rt2x00dev->ops->lib->config(rt2x00dev, &libconf, ieee80211_flags);
/*
* Some configuration changes affect the link quality
* which means we need to reset the link tuner.
*/
if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL)
rt2x00link_reset_tuner(rt2x00dev, false);
rt2x00dev->curr_band = conf->channel->band;
rt2x00dev->tx_power = conf->power_level;
rt2x00dev->short_retry = conf->short_frame_max_tx_count;
rt2x00dev->long_retry = conf->long_frame_max_tx_count;
rt2x00dev->rx_status.band = conf->channel->band;
rt2x00dev->rx_status.freq = conf->channel->center_freq;
}
|