mac80211: initialise queue QoS parameters at hw start

When hardware is started it might be in a confused state with
respect to queue QoS parameters. This patch changes mac80211
to set sane defaults right after the hardware is brought up.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 35 insertions, 27 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 792c09ca08e3..b10e70715db0 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -987,6 +987,7 @@ int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
                              int rate, int erp, int short_preamble);
 void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int keyidx,
                                      struct ieee80211_hdr *hdr);
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
 
 #ifdef CONFIG_MAC80211_NOINLINE
 #define debug_noinline noinline
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index f90254a5948e..6a7f4fae18c2 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -399,8 +399,15 @@ static int ieee80211_open(struct net_device *dev)
                 atomic_inc(&local->iff_promiscs);
 
         local->open_count++;
-        if (need_hw_reconfig)
+        if (need_hw_reconfig) {
                 ieee80211_hw_config(local);
+                /*
+                 * set default queue parameters so drivers don't
+                 * need to initialise the hardware if the hardware
+                 * doesn't start up with sane defaults
+                 */
+                ieee80211_set_wmm_default(sdata);
+        }
 
         /*
          * ieee80211_sta_work is disabled while network interface
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index f754ad273f92..c22dcd605e48 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -539,32 +539,6 @@ static void ieee80211_send_refuse_measurement_request(struct ieee80211_sub_if_da
 }
 
 /* MLME */
-static void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
-{
-        struct ieee80211_local *local = sdata->local;
-        struct ieee80211_tx_queue_params qparam;
-        int i;
-
-        if (!local->ops->conf_tx)
-                return;
-
-        memset(&qparam, 0, sizeof(qparam));
-
-        qparam.aifs = 2;
-
-        if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
-            !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
-                qparam.cw_min = 31;
-        else
-                qparam.cw_min = 15;
-
-        qparam.cw_max = 1023;
-        qparam.txop = 0;
-
-        for (i = 0; i < local_to_hw(local)->queues; i++)
-                local->ops->conf_tx(local_to_hw(local), i, &qparam);
-}
-
 static void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
                                          struct ieee80211_sta_bss *bss)
 {
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index e19c74cada39..55be3ef5c755 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -572,3 +572,29 @@ void ieee802_11_parse_elems(u8 *start, size_t len,
                 pos += elen;
         }
 }
+
+void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
+{
+        struct ieee80211_local *local = sdata->local;
+        struct ieee80211_tx_queue_params qparam;
+        int i;
+
+        if (!local->ops->conf_tx)
+                return;
+
+        memset(&qparam, 0, sizeof(qparam));
+
+        qparam.aifs = 2;
+
+        if (local->hw.conf.channel->band == IEEE80211_BAND_2GHZ &&
+            !(sdata->flags & IEEE80211_SDATA_OPERATING_GMODE))
+                qparam.cw_min = 31;
+        else
+                qparam.cw_min = 15;
+
+        qparam.cw_max = 1023;
+        qparam.txop = 0;
+
+        for (i = 0; i < local_to_hw(local)->queues; i++)
+                local->ops->conf_tx(local_to_hw(local), i, &qparam);
+}