Commit a8ce8544 authored by Stanislaw Gruszka's avatar Stanislaw Gruszka Committed by John W. Linville
Browse files

mac80211: configure 11b/g channel access rules for legacy APs 



For each EDCA TX queue change default settings (in STA mode) to conform
old 802.11b/g channel access rules. This is needed for drivers that do
not have QoS enable/disable "switch" (like rt2x00) to make them work
properly with legacy APs.

Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d202caff

net/mac80211/util.c

+46 −34
Original line number Diff line number Diff line
@@ -804,7 +804,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 
	struct ieee80211_local *local = sdata->local;

	struct ieee80211_tx_queue_params qparam;

	int ac;

	bool use_11b;

	bool use_11b, enable_qos;

	int aCWmin, aCWmax;



	if (!local->ops->conf_tx)
@@ -818,6 +818,13 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 
	use_11b = (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ) &&

		 !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE);



	/*

	 * By default disable QoS in STA mode for old access points, which do

	 * not support 802.11e. New APs will provide proper queue parameters,

	 * that we will configure later.

	 */

	enable_qos = (sdata->vif.type != NL80211_IFTYPE_STATION);



	for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {

		/* Set defaults according to 802.11-2007 Table 7-37 */

		aCWmax = 1023;
@@ -826,6 +833,7 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 
		else

			aCWmin = 15;



		if (enable_qos) {

			switch (ac) {

			case IEEE80211_AC_BK:

				qparam.cw_max = aCWmax;
@@ -833,7 +841,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 
				qparam.txop = 0;

				qparam.aifs = 7;

				break;

		default: /* never happens but let's not leave undefined */

			/* never happens but let's not leave undefined */

			default:

			case IEEE80211_AC_BE:

				qparam.cw_max = aCWmax;

				qparam.cw_min = aCWmin;
@@ -859,6 +868,13 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 
				qparam.aifs = 2;

				break;

			}

		} else {

			/* Confiure old 802.11b/g medium access rules. */

			qparam.cw_max = aCWmax;

			qparam.cw_min = aCWmin;

			qparam.txop = 0;

			qparam.aifs = 2;

		}



		qparam.uapsd = false;
@@ -866,12 +882,8 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata, 
		drv_conf_tx(local, sdata, ac, &qparam);

	}



	/* after reinitialize QoS TX queues setting to default,

	 * disable QoS at all */



	if (sdata->vif.type != NL80211_IFTYPE_MONITOR) {

		sdata->vif.bss_conf.qos =

			sdata->vif.type != NL80211_IFTYPE_STATION;

		sdata->vif.bss_conf.qos = enable_qos;

		if (bss_notify)

			ieee80211_bss_info_change_notify(sdata,

							 BSS_CHANGED_QOS);

CRA Git | Maintained and supported by SUSTech CRA and CCSE