mac80211: explicitly disable/enable QoS

Add interface to disable/enable QoS (aka WMM or WME). Currently drivers
enable it explicitly when ->conf_tx method is called, and newer disable.
Disabling is needed for some APs, which do not support QoS, such
we should send QoS frames to them.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index ecaae10..dcf3c5f 100644 (file)
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -587,11 +587,15 @@ struct ieee80211_rx_status {
  *     may turn the device off as much as possible. Typically, this flag will
  *     be set when an interface is set UP but not associated or scanning, but
  *     it can also be unset in that case when monitor interfaces are active.
+ * @IEEE80211_CONF_QOS: Enable 802.11e QoS also know as WMM (Wireless
+ *      Multimedia). On some drivers (iwlwifi is one of know) we have
+ *      to enable/disable QoS explicitly.
  */
 enum ieee80211_conf_flags {
        IEEE80211_CONF_MONITOR          = (1<<0),
        IEEE80211_CONF_PS               = (1<<1),
        IEEE80211_CONF_IDLE             = (1<<2),
+       IEEE80211_CONF_QOS              = (1<<3),
 };
 
 
@@ -616,6 +620,7 @@ enum ieee80211_conf_changed {
        IEEE80211_CONF_CHANGE_CHANNEL           = BIT(6),
        IEEE80211_CONF_CHANGE_RETRY_LIMITS      = BIT(7),
        IEEE80211_CONF_CHANGE_IDLE              = BIT(8),
+       IEEE80211_CONF_CHANGE_QOS               = BIT(9),
 };
 
 /**

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 65eafda..c686d1b 100644 (file)
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -586,6 +586,9 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
        int count;
        u8 *pos, uapsd_queues = 0;
 
+       if (!local->ops->conf_tx)
+               return;
+
        if (local->hw.queues < 4)
                return;
 
@@ -660,11 +663,15 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
                       params.aifs, params.cw_min, params.cw_max, params.txop,
                       params.uapsd);
 #endif
-               if (drv_conf_tx(local, queue, &params) && local->ops->conf_tx)
+               if (drv_conf_tx(local, queue, &params))
                        printk(KERN_DEBUG "%s: failed to set TX queue "
                               "parameters for queue %d\n",
                               wiphy_name(local->hw.wiphy), queue);
        }
+
+       /* enable WMM or activate new settings */
+       local->hw.conf.flags |= IEEE80211_CONF_QOS;
+       drv_config(local, IEEE80211_CONF_CHANGE_QOS);
 }
 
 static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index c453226..7b2c170 100644 (file)
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -796,6 +796,11 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
 
                drv_conf_tx(local, queue, &qparam);
        }
+
+       /* after reinitialize QoS TX queues setting to default,
+        * disable QoS at all */
+       local->hw.conf.flags &= ~IEEE80211_CONF_QOS;
+       drv_config(local, IEEE80211_CONF_CHANGE_QOS);
 }
 
 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,