[deliverable/linux.git] / drivers / net / wireless / rt2x00 / rt2x00config.c

/*
	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
	<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 ieee80211_if_types type,
			   u8 *mac, u8 *bssid)
{
	struct rt2x00intf_conf conf;
	unsigned int flags = 0;

	conf.type = type;

	switch (type) {
	case IEEE80211_IF_TYPE_IBSS:
	case IEEE80211_IF_TYPE_AP:
		conf.sync = TSF_SYNC_BEACON;
		break;
	case IEEE80211_IF_TYPE_STA:
		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_preamble(struct rt2x00_dev *rt2x00dev,
			       struct rt2x00_intf *intf,
			       const unsigned int short_preamble)
{
	int retval;
	int ack_timeout;
	int ack_consume_time;

	ack_timeout = PLCP + get_duration(ACK_SIZE, 10);
	ack_consume_time = SIFS + PLCP + get_duration(ACK_SIZE, 10);

	if (rt2x00dev->hw->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME)
		ack_timeout += SHORT_DIFS;
	else
		ack_timeout += DIFS;

	if (short_preamble) {
		ack_timeout += SHORT_PREAMBLE;
		ack_consume_time += SHORT_PREAMBLE;
	} else {
		ack_timeout += PREAMBLE;
		ack_consume_time += PREAMBLE;
	}

	retval = rt2x00dev->ops->lib->config_preamble(rt2x00dev,
						      short_preamble,
						      ack_timeout,
						      ack_consume_time);

	spin_lock(&intf->lock);

	if (retval) {
		intf->delayed_flags |= DELAYED_CONFIG_PREAMBLE;
		queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
	}

	spin_unlock(&intf->lock);
}

void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
			      enum antenna rx, enum antenna tx)
{
	struct rt2x00lib_conf libconf;

	libconf.ant.rx = rx;
	libconf.ant.tx = tx;

	if (rx == rt2x00dev->link.ant.active.rx &&
	    tx == rt2x00dev->link.ant.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_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(rt2x00dev, &libconf, CONFIG_UPDATE_ANTENNA);
	rt2x00lib_reset_link_tuner(rt2x00dev);

	rt2x00dev->link.ant.active.rx = libconf.ant.rx;
	rt2x00dev->link.ant.active.tx = libconf.ant.tx;

	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
		rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
}

void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
		      struct ieee80211_conf *conf, const int force_config)
{
	struct rt2x00lib_conf libconf;
	struct ieee80211_hw_mode *mode;
	struct ieee80211_rate *rate;
	struct antenna_setup *default_ant = &rt2x00dev->default_ant;
	struct antenna_setup *active_ant = &rt2x00dev->link.ant.active;
	int flags = 0;
	int short_slot_time;

	/*
	 * In some situations we want to force all configurations
	 * to be reloaded (When resuming for instance).
	 */
	if (force_config) {
		flags = CONFIG_UPDATE_ALL;
		goto config;
	}

	/*
	 * Check which configuration options have been
	 * updated and should be send to the device.
	 */
	if (rt2x00dev->rx_status.phymode != conf->phymode)
		flags |= CONFIG_UPDATE_PHYMODE;
	if (rt2x00dev->rx_status.channel != conf->channel)
		flags |= CONFIG_UPDATE_CHANNEL;
	if (rt2x00dev->tx_power != conf->power_level)
		flags |= CONFIG_UPDATE_TXPOWER;

	/*
	 * Determining changes in the antenna setups request several checks:
	 * antenna_sel_{r,t}x = 0
	 *    -> Does active_{r,t}x match default_{r,t}x
	 *    -> Is default_{r,t}x SW_DIVERSITY
	 * antenna_sel_{r,t}x = 1/2
	 *    -> Does active_{r,t}x match antenna_sel_{r,t}x
	 * The reason for not updating the antenna while SW diversity
	 * should be used is simple: Software diversity means that
	 * we should switch between the antenna's based on the
	 * quality. This means that the current antenna is good enough
	 * to work with untill the link tuner decides that an antenna
	 * switch should be performed.
	 */
	if (!conf->antenna_sel_rx &&
	    default_ant->rx != ANTENNA_SW_DIVERSITY &&
	    default_ant->rx != active_ant->rx)
		flags |= CONFIG_UPDATE_ANTENNA;
	else if (conf->antenna_sel_rx &&
		 conf->antenna_sel_rx != active_ant->rx)
		flags |= CONFIG_UPDATE_ANTENNA;
	else if (active_ant->rx == ANTENNA_SW_DIVERSITY)
		flags |= CONFIG_UPDATE_ANTENNA;

	if (!conf->antenna_sel_tx &&
	    default_ant->tx != ANTENNA_SW_DIVERSITY &&
	    default_ant->tx != active_ant->tx)
		flags |= CONFIG_UPDATE_ANTENNA;
	else if (conf->antenna_sel_tx &&
		 conf->antenna_sel_tx != active_ant->tx)
		flags |= CONFIG_UPDATE_ANTENNA;
	else if (active_ant->tx == ANTENNA_SW_DIVERSITY)
		flags |= CONFIG_UPDATE_ANTENNA;

	/*
	 * The following configuration options are never
	 * stored anywhere and will always be updated.
	 */
	flags |= CONFIG_UPDATE_SLOT_TIME;
	flags |= CONFIG_UPDATE_BEACON_INT;

	/*
	 * We have determined what options should be updated,
	 * now precalculate device configuration values depending
	 * on what configuration options need to be updated.
	 */
config:
	memset(&libconf, 0, sizeof(libconf));

	if (flags & CONFIG_UPDATE_PHYMODE) {
		switch (conf->phymode) {
		case MODE_IEEE80211A:
			libconf.phymode = HWMODE_A;
			break;
		case MODE_IEEE80211B:
			libconf.phymode = HWMODE_B;
			break;
		case MODE_IEEE80211G:
			libconf.phymode = HWMODE_G;
			break;
		default:
			ERROR(rt2x00dev,
			      "Attempt to configure unsupported mode (%d)"
			      "Defaulting to 802.11b", conf->phymode);
			libconf.phymode = HWMODE_B;
		}

		mode = &rt2x00dev->hwmodes[libconf.phymode];
		rate = &mode->rates[mode->num_rates - 1];

		libconf.basic_rates =
		    DEVICE_GET_RATE_FIELD(rate->val, RATEMASK) & DEV_BASIC_RATEMASK;
	}

	if (flags & CONFIG_UPDATE_CHANNEL) {
		memcpy(&libconf.rf,
		       &rt2x00dev->spec.channels[conf->channel_val],
		       sizeof(libconf.rf));
	}

	if (flags & CONFIG_UPDATE_ANTENNA) {
		if (conf->antenna_sel_rx)
			libconf.ant.rx = conf->antenna_sel_rx;
		else if (default_ant->rx != ANTENNA_SW_DIVERSITY)
			libconf.ant.rx = default_ant->rx;
		else if (active_ant->rx == ANTENNA_SW_DIVERSITY)
			libconf.ant.rx = ANTENNA_B;

		if (conf->antenna_sel_tx)
			libconf.ant.tx = conf->antenna_sel_tx;
		else if (default_ant->tx != ANTENNA_SW_DIVERSITY)
			libconf.ant.tx = default_ant->tx;
		else if (active_ant->tx == ANTENNA_SW_DIVERSITY)
			libconf.ant.tx = ANTENNA_B;
	}

	if (flags & CONFIG_UPDATE_SLOT_TIME) {
		short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME;

		libconf.slot_time =
		    short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME;
		libconf.sifs = SIFS;
		libconf.pifs = short_slot_time ? SHORT_PIFS : PIFS;
		libconf.difs = short_slot_time ? SHORT_DIFS : DIFS;
		libconf.eifs = EIFS;
	}

	libconf.conf = conf;

	/*
	 * Start configuration.
	 */
	rt2x00dev->ops->lib->config(rt2x00dev, &libconf, flags);

	/*
	 * Some configuration changes affect the link quality
	 * which means we need to reset the link tuner.
	 */
	if (flags & (CONFIG_UPDATE_CHANNEL | CONFIG_UPDATE_ANTENNA))
		rt2x00lib_reset_link_tuner(rt2x00dev);

	if (flags & CONFIG_UPDATE_PHYMODE) {
		rt2x00dev->curr_hwmode = libconf.phymode;
		rt2x00dev->rx_status.phymode = conf->phymode;
	}

	rt2x00dev->rx_status.freq = conf->freq;
	rt2x00dev->rx_status.channel = conf->channel;
	rt2x00dev->tx_power = conf->power_level;

	if (flags & CONFIG_UPDATE_ANTENNA) {
		rt2x00dev->link.ant.active.rx = libconf.ant.rx;
		rt2x00dev->link.ant.active.tx = libconf.ant.tx;
	}
}
Commit	Line	Data
95ea3627	1	/*
811aa9ca	2	Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
95ea3627 ID	3	<http://rt2x00.serialmonkey.com>
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the
	17	Free Software Foundation, Inc.,
	18	59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	19	*/
	20
	21	/*
	22	Module: rt2x00lib
	23	Abstract: rt2x00 generic configuration routines.
	24	*/
	25
95ea3627 ID	26	#include <linux/kernel.h>
	27	#include <linux/module.h>
	28
	29	#include "rt2x00.h"
	30	#include "rt2x00lib.h"
	31
6bb40dd1 ID	32	void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev,
	33	struct rt2x00_intf *intf,
	34	enum ieee80211_if_types type,
	35	u8 mac, u8 bssid)
95ea3627	36	{
6bb40dd1 ID	37	struct rt2x00intf_conf conf;
6bb40dd1 ID	38	unsigned int flags = 0;
95ea3627	39
6bb40dd1	40	conf.type = type;
feb24691 ID	41
	42	switch (type) {
	43	case IEEE80211_IF_TYPE_IBSS:
	44	case IEEE80211_IF_TYPE_AP:
6bb40dd1	45	conf.sync = TSF_SYNC_BEACON;
feb24691 ID	46	break;
feb24691 ID	47	case IEEE80211_IF_TYPE_STA:
6bb40dd1	48	conf.sync = TSF_SYNC_INFRA;
feb24691 ID	49	break;
feb24691 ID	50	default:
6bb40dd1	51	conf.sync = TSF_SYNC_NONE;
feb24691 ID	52	break;
	53	}
	54
6bb40dd1 ID	55	/*
	56	* Note that when NULL is passed as address we will send
	57	* 00:00:00:00:00 to the device to clear the address.
	58	* This will prevent the device being confused when it wants
	59	* to ACK frames or consideres itself associated.
	60	*/
	61	memset(&conf.mac, 0, sizeof(conf.mac));
	62	if (mac)
	63	memcpy(&conf.mac, mac, ETH_ALEN);
	64
	65	memset(&conf.bssid, 0, sizeof(conf.bssid));
	66	if (bssid)
	67	memcpy(&conf.bssid, bssid, ETH_ALEN);
	68
	69	flags \|= CONFIG_UPDATE_TYPE;
	70	if (mac \|\| (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
	71	flags \|= CONFIG_UPDATE_MAC;
	72	if (bssid \|\| (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
	73	flags \|= CONFIG_UPDATE_BSSID;
	74
	75	rt2x00dev->ops->lib->config_intf(rt2x00dev, intf, &conf, flags);
	76	}
	77
	78	void rt2x00lib_config_preamble(struct rt2x00_dev *rt2x00dev,
	79	struct rt2x00_intf *intf,
	80	const unsigned int short_preamble)
	81	{
	82	int retval;
	83	int ack_timeout;
	84	int ack_consume_time;
	85
	86	ack_timeout = PLCP + get_duration(ACK_SIZE, 10);
	87	ack_consume_time = SIFS + PLCP + get_duration(ACK_SIZE, 10);
	88
	89	if (rt2x00dev->hw->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME)
	90	ack_timeout += SHORT_DIFS;
	91	else
	92	ack_timeout += DIFS;
	93
	94	if (short_preamble) {
	95	ack_timeout += SHORT_PREAMBLE;
	96	ack_consume_time += SHORT_PREAMBLE;
	97	} else {
	98	ack_timeout += PREAMBLE;
	99	ack_consume_time += PREAMBLE;
	100	}
	101
	102	retval = rt2x00dev->ops->lib->config_preamble(rt2x00dev,
	103	short_preamble,
	104	ack_timeout,
	105	ack_consume_time);
	106
	107	spin_lock(&intf->lock);
	108
	109	if (retval) {
	110	intf->delayed_flags \|= DELAYED_CONFIG_PREAMBLE;
	111	queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
	112	}
	113
	114	spin_unlock(&intf->lock);
95ea3627 ID	115	}
95ea3627 ID	116
69f81a2c ID	117	void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
	118	enum antenna rx, enum antenna tx)
	119	{
	120	struct rt2x00lib_conf libconf;
	121
	122	libconf.ant.rx = rx;
	123	libconf.ant.tx = tx;
	124
05253c93 ID	125	if (rx == rt2x00dev->link.ant.active.rx &&
	126	tx == rt2x00dev->link.ant.active.tx)
	127	return;
	128
e25c4bb9 ID	129	/*
	130	* Antenna setup changes require the RX to be disabled,
	131	* else the changes will be ignored by the device.
	132	*/
	133	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
61667d8d	134	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
e25c4bb9	135
69f81a2c ID	136	/*
	137	* Write new antenna setup to device and reset the link tuner.
	138	* The latter is required since we need to recalibrate the
	139	* noise-sensitivity ratio for the new setup.
	140	*/
6bb40dd1	141	rt2x00dev->ops->lib->config(rt2x00dev, &libconf, CONFIG_UPDATE_ANTENNA);
69f81a2c ID	142	rt2x00lib_reset_link_tuner(rt2x00dev);
	143
	144	rt2x00dev->link.ant.active.rx = libconf.ant.rx;
	145	rt2x00dev->link.ant.active.tx = libconf.ant.tx;
e25c4bb9 ID	146
e25c4bb9 ID	147	if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
61667d8d	148	rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
69f81a2c ID	149	}
69f81a2c ID	150
066cb637 ID	151	void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
066cb637 ID	152	struct ieee80211_conf *conf, const int force_config)
95ea3627	153	{
5c58ee51 ID	154	struct rt2x00lib_conf libconf;
	155	struct ieee80211_hw_mode *mode;
	156	struct ieee80211_rate *rate;
addc81bd	157	struct antenna_setup *default_ant = &rt2x00dev->default_ant;
69f81a2c	158	struct antenna_setup *active_ant = &rt2x00dev->link.ant.active;
95ea3627	159	int flags = 0;
5c58ee51	160	int short_slot_time;
95ea3627 ID	161
95ea3627 ID	162	/*
066cb637 ID	163	* In some situations we want to force all configurations
066cb637 ID	164	* to be reloaded (When resuming for instance).
95ea3627	165	*/
066cb637	166	if (force_config) {
95ea3627 ID	167	flags = CONFIG_UPDATE_ALL;
	168	goto config;
	169	}
	170
	171	/*
	172	* Check which configuration options have been
	173	* updated and should be send to the device.
	174	*/
	175	if (rt2x00dev->rx_status.phymode != conf->phymode)
	176	flags \|= CONFIG_UPDATE_PHYMODE;
	177	if (rt2x00dev->rx_status.channel != conf->channel)
	178	flags \|= CONFIG_UPDATE_CHANNEL;
	179	if (rt2x00dev->tx_power != conf->power_level)
	180	flags \|= CONFIG_UPDATE_TXPOWER;
addc81bd ID	181
	182	/*
	183	* Determining changes in the antenna setups request several checks:
	184	* antenna_sel_{r,t}x = 0
	185	* -> Does active_{r,t}x match default_{r,t}x
	186	* -> Is default_{r,t}x SW_DIVERSITY
	187	* antenna_sel_{r,t}x = 1/2
	188	* -> Does active_{r,t}x match antenna_sel_{r,t}x
	189	* The reason for not updating the antenna while SW diversity
	190	* should be used is simple: Software diversity means that
	191	* we should switch between the antenna's based on the
	192	* quality. This means that the current antenna is good enough
	193	* to work with untill the link tuner decides that an antenna
	194	* switch should be performed.
	195	*/
	196	if (!conf->antenna_sel_rx &&
	197	default_ant->rx != ANTENNA_SW_DIVERSITY &&
	198	default_ant->rx != active_ant->rx)
	199	flags \|= CONFIG_UPDATE_ANTENNA;
	200	else if (conf->antenna_sel_rx &&
	201	conf->antenna_sel_rx != active_ant->rx)
	202	flags \|= CONFIG_UPDATE_ANTENNA;
16b1951f MN	203	else if (active_ant->rx == ANTENNA_SW_DIVERSITY)
16b1951f MN	204	flags \|= CONFIG_UPDATE_ANTENNA;
addc81bd ID	205
	206	if (!conf->antenna_sel_tx &&
	207	default_ant->tx != ANTENNA_SW_DIVERSITY &&
	208	default_ant->tx != active_ant->tx)
	209	flags \|= CONFIG_UPDATE_ANTENNA;
	210	else if (conf->antenna_sel_tx &&
	211	conf->antenna_sel_tx != active_ant->tx)
95ea3627	212	flags \|= CONFIG_UPDATE_ANTENNA;
16b1951f MN	213	else if (active_ant->tx == ANTENNA_SW_DIVERSITY)
16b1951f MN	214	flags \|= CONFIG_UPDATE_ANTENNA;
95ea3627 ID	215
	216	/*
	217	* The following configuration options are never
	218	* stored anywhere and will always be updated.
	219	*/
	220	flags \|= CONFIG_UPDATE_SLOT_TIME;
	221	flags \|= CONFIG_UPDATE_BEACON_INT;
	222
5c58ee51 ID	223	/*
	224	* We have determined what options should be updated,
	225	* now precalculate device configuration values depending
	226	* on what configuration options need to be updated.
	227	*/
95ea3627	228	config:
5c58ee51 ID	229	memset(&libconf, 0, sizeof(libconf));
	230
	231	if (flags & CONFIG_UPDATE_PHYMODE) {
	232	switch (conf->phymode) {
	233	case MODE_IEEE80211A:
	234	libconf.phymode = HWMODE_A;
	235	break;
	236	case MODE_IEEE80211B:
	237	libconf.phymode = HWMODE_B;
	238	break;
	239	case MODE_IEEE80211G:
	240	libconf.phymode = HWMODE_G;
	241	break;
	242	default:
	243	ERROR(rt2x00dev,
	244	"Attempt to configure unsupported mode (%d)"
	245	"Defaulting to 802.11b", conf->phymode);
	246	libconf.phymode = HWMODE_B;
	247	}
	248
	249	mode = &rt2x00dev->hwmodes[libconf.phymode];
	250	rate = &mode->rates[mode->num_rates - 1];
	251
	252	libconf.basic_rates =
	253	DEVICE_GET_RATE_FIELD(rate->val, RATEMASK) & DEV_BASIC_RATEMASK;
	254	}
	255
	256	if (flags & CONFIG_UPDATE_CHANNEL) {
	257	memcpy(&libconf.rf,
	258	&rt2x00dev->spec.channels[conf->channel_val],
	259	sizeof(libconf.rf));
	260	}
	261
addc81bd ID	262	if (flags & CONFIG_UPDATE_ANTENNA) {
	263	if (conf->antenna_sel_rx)
	264	libconf.ant.rx = conf->antenna_sel_rx;
	265	else if (default_ant->rx != ANTENNA_SW_DIVERSITY)
	266	libconf.ant.rx = default_ant->rx;
	267	else if (active_ant->rx == ANTENNA_SW_DIVERSITY)
	268	libconf.ant.rx = ANTENNA_B;
	269
	270	if (conf->antenna_sel_tx)
	271	libconf.ant.tx = conf->antenna_sel_tx;
	272	else if (default_ant->tx != ANTENNA_SW_DIVERSITY)
	273	libconf.ant.tx = default_ant->tx;
	274	else if (active_ant->tx == ANTENNA_SW_DIVERSITY)
	275	libconf.ant.tx = ANTENNA_B;
	276	}
	277
5c58ee51 ID	278	if (flags & CONFIG_UPDATE_SLOT_TIME) {
	279	short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME;
	280
	281	libconf.slot_time =
	282	short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME;
	283	libconf.sifs = SIFS;
	284	libconf.pifs = short_slot_time ? SHORT_PIFS : PIFS;
	285	libconf.difs = short_slot_time ? SHORT_DIFS : DIFS;
	286	libconf.eifs = EIFS;
	287	}
	288
	289	libconf.conf = conf;
	290
	291	/*
	292	* Start configuration.
	293	*/
6bb40dd1	294	rt2x00dev->ops->lib->config(rt2x00dev, &libconf, flags);
95ea3627 ID	295
	296	/*
	297	* Some configuration changes affect the link quality
	298	* which means we need to reset the link tuner.
	299	*/
	300	if (flags & (CONFIG_UPDATE_CHANNEL \| CONFIG_UPDATE_ANTENNA))
	301	rt2x00lib_reset_link_tuner(rt2x00dev);
	302
16b1951f MN	303	if (flags & CONFIG_UPDATE_PHYMODE) {
	304	rt2x00dev->curr_hwmode = libconf.phymode;
	305	rt2x00dev->rx_status.phymode = conf->phymode;
	306	}
	307
95ea3627 ID	308	rt2x00dev->rx_status.freq = conf->freq;
	309	rt2x00dev->rx_status.channel = conf->channel;
	310	rt2x00dev->tx_power = conf->power_level;
16b1951f MN	311
	312	if (flags & CONFIG_UPDATE_ANTENNA) {
	313	rt2x00dev->link.ant.active.rx = libconf.ant.rx;
	314	rt2x00dev->link.ant.active.tx = libconf.ant.tx;
	315	}
95ea3627	316	}