mac80211: Enhancements to dynamic power save.

This patch enables mac80211 to send a null frame and also to
check for tim in the beacon if dynamic power save is enabled.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index 8568f1e7266f..48fc6b9a62a4 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -871,12 +871,17 @@ set:
                         mod_timer(&local->dynamic_ps_timer, jiffies +
                                   msecs_to_jiffies(local->dynamic_ps_timeout));
                 else {
-                        if (local->powersave)
+                        if (local->powersave) {
+                                ieee80211_send_nullfunc(local, sdata, 1);
                                 conf->flags |= IEEE80211_CONF_PS;
-                        else
+                                ret = ieee80211_hw_config(local,
+                                                IEEE80211_CONF_CHANGE_PS);
+                        } else {
                                 conf->flags &= ~IEEE80211_CONF_PS;
-                        ret = ieee80211_hw_config(local,
-                                        IEEE80211_CONF_CHANGE_PS);
+                                ret = ieee80211_hw_config(local,
+                                                IEEE80211_CONF_CHANGE_PS);
+                                ieee80211_send_nullfunc(local, sdata, 0);
+                        }
                 }
         }