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authorKalle Valo <kalle.valo@nokia.com>2009-03-22 21:57:06 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-03-27 20:13:12 -0400
commit3cf335d527ba6af80f4143f3c9e5136afdb143af (patch)
tree3bde85689909d3185622ccafe16f55fe4469a6ce
parentaf83debf5bb44257082d4489ac86123a0cadf6d3 (diff)
mac80211: decrease execution of the associated timer
Currently the timer is triggering every two seconds (IEEE80211_MONITORING_INTERVAL). Decrease the timer to only trigger during data idle periods to avoid waking up CPU unnecessary. The timer will still trigger during idle periods, that needs to be fixed later. There's also a functional change that probe requests are sent only when the data path is idle, earlier they were sent also while there was activity on the data path. This is also preparation for the beacon filtering support. Thanks to Johannes Berg for the idea. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--net/mac80211/ieee80211_i.h2
-rw-r--r--net/mac80211/mlme.c15
-rw-r--r--net/mac80211/rx.c3
3 files changed, 20 insertions, 0 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 564167fbb9a..055bb776408 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1083,6 +1083,8 @@ void ieee80211_dynamic_ps_timer(unsigned long data);
void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
int powersave);
+void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_hdr *hdr);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
enum queue_stop_reason reason);
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index c05be09b9c6..209abb073df 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -909,6 +909,21 @@ static void ieee80211_associate(struct ieee80211_sub_if_data *sdata)
mod_timer(&ifmgd->timer, jiffies + IEEE80211_ASSOC_TIMEOUT);
}
+void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_hdr *hdr)
+{
+ /*
+ * We can postpone the mgd.timer whenever receiving unicast frames
+ * from AP because we know that the connection is working both ways
+ * at that time. But multicast frames (and hence also beacons) must
+ * be ignored here, because we need to trigger the timer during
+ * data idle periods for sending the periodical probe request to
+ * the AP.
+ */
+ if (!is_multicast_ether_addr(hdr->addr1))
+ mod_timer(&sdata->u.mgd.timer,
+ jiffies + IEEE80211_MONITORING_INTERVAL);
+}
static void ieee80211_associated(struct ieee80211_sub_if_data *sdata)
{
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 47d395a5192..dbfb2846535 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -856,6 +856,9 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
if (!(rx->flags & IEEE80211_RX_RA_MATCH))
return RX_CONTINUE;
+ if (rx->sdata->vif.type == NL80211_IFTYPE_STATION)
+ ieee80211_sta_rx_notify(rx->sdata, hdr);
+
sta->rx_fragments++;
sta->rx_bytes += rx->skb->len;
sta->last_signal = rx->status->signal;