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authorFelix Fietkau <nbd@openwrt.org>2011-04-17 17:45:00 +0200
committerJohn W. Linville <linville@tuxdriver.com>2011-04-19 15:38:05 -0400
commitdcf55fb5d43bd82e1e3bf94f065cfe8f75a4bc5a (patch)
tree34b8bb4d1c1dcb45d0e5e134fd6373b8fcc1e689 /net/mac80211/sta_info.c
parentcea3235cf578b5e952f5a0cec9bc6c2e862eb697 (diff)
downloadblackbird-op-linux-dcf55fb5d43bd82e1e3bf94f065cfe8f75a4bc5a.tar.gz
blackbird-op-linux-dcf55fb5d43bd82e1e3bf94f065cfe8f75a4bc5a.zip
mac80211: add a function for setting the TIM bit for a specific station
This allows a driver to buffer frames for a PS station and tell mac80211 to wake it up even though mac80211 does not have any buffered frames for it. This is necessary for properly handling aggregation related buffering, in ath9k, because the driver needs to keep its frames in order to keep track of the Block-ACK window. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/sta_info.c')
-rw-r--r--net/mac80211/sta_info.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 8a9068ac0673..7c5c6da01bea 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -612,7 +612,8 @@ static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
#endif
dev_kfree_skb(skb);
- if (skb_queue_empty(&sta->ps_tx_buf))
+ if (skb_queue_empty(&sta->ps_tx_buf) &&
+ !test_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF))
sta_info_clear_tim_bit(sta);
}
@@ -896,6 +897,7 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
struct ieee80211_local *local = sdata->local;
int sent, buffered;
+ clear_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF);
if (!(local->hw.flags & IEEE80211_HW_AP_LINK_PS))
drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
@@ -988,3 +990,12 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
ieee80211_queue_work(hw, &sta->drv_unblock_wk);
}
EXPORT_SYMBOL(ieee80211_sta_block_awake);
+
+void ieee80211_sta_set_tim(struct ieee80211_sta *pubsta)
+{
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+
+ set_sta_flags(sta, WLAN_STA_PS_DRIVER_BUF);
+ sta_info_set_tim_bit(sta);
+}
+EXPORT_SYMBOL(ieee80211_sta_set_tim);
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