mac80211: add sta_notify_ps callback

This patch is necessary in order to provide a proper Access point support for p54.
Unfortunately for us, there is no documented way to disable the interfering
power save buffering mechanism in firmware completely.

Therefore we give in and notify the driver through our new sta_notify_ps callback,
so that we can update the filter state.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 68a6e973c72c..14be095b8528 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -654,9 +654,13 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
 static void ap_sta_ps_start(struct sta_info *sta)
 {
         struct ieee80211_sub_if_data *sdata = sta->sdata;
+        struct ieee80211_local *local = sdata->local;
 
         atomic_inc(&sdata->bss->num_sta_ps);
         set_and_clear_sta_flags(sta, WLAN_STA_PS, WLAN_STA_PSPOLL);
+        if (local->ops->sta_notify_ps)
+                local->ops->sta_notify_ps(local_to_hw(local), STA_NOTIFY_SLEEP,
+                                          &sta->sta);
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
         printk(KERN_DEBUG "%s: STA %pM aid %d enters power save mode\n",
                sdata->dev->name, sta->sta.addr, sta->sta.aid);
@@ -673,6 +677,9 @@ static int ap_sta_ps_end(struct sta_info *sta)
         atomic_dec(&sdata->bss->num_sta_ps);
 
         clear_sta_flags(sta, WLAN_STA_PS | WLAN_STA_PSPOLL);
+        if (local->ops->sta_notify_ps)
+                local->ops->sta_notify_ps(local_to_hw(local), STA_NOTIFY_AWAKE,
+                                          &sta->sta);
 
         if (!skb_queue_empty(&sta->ps_tx_buf))
                 sta_info_clear_tim_bit(sta);