This functions will be used for mesh beacons, too.
Signed-off-by: Marco Porsch <marco@xxxxxxxxxxx>
---
net/mac80211/tx.c | 48 +++++++++++++++++++++++++++++-------------------
1 file changed, 29 insertions(+), 19 deletions(-)
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index e9eadc4..1b04984 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2261,9 +2261,9 @@ void ieee80211_tx_pending(unsigned long data)
/* functions for drivers to get certain frames */
-static void ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
- struct ps_data *ps,
- struct sk_buff *skb)
+static void __ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
+ struct ps_data *ps,
+ struct sk_buff *skb)
{
u8 *pos, *tim;
int aid0 = 0;
@@ -2325,6 +2325,31 @@ static void ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
}
}
+static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata,
+ struct ps_data *ps,
+ struct sk_buff *skb)
+{
+ struct ieee80211_local *local = sdata->local;
+
+ /* Not very nice, but we want to allow the driver to call
+ * ieee80211_beacon_get() as a response to the set_tim() callback.
+ * That, however, is already invoked under the sta_lock to guarantee
+ * consistent and race-free update of the tim bitmap in mac80211 and
+ * the driver.
+ */
+ if (local->tim_in_locked_section) {
+ __ieee80211_beacon_add_tim(sdata, ps, skb);
+ } else {
+ unsigned long flags;
+
+ spin_lock_irqsave(&local->tim_lock, flags);
+ __ieee80211_beacon_add_tim(sdata, ps, skb);
+ spin_unlock_irqrestore(&local->tim_lock, flags);
+ }
+
+ return 0;
+}
+
struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u16 *tim_offset, u16 *tim_length)
@@ -2369,22 +2394,7 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
memcpy(skb_put(skb, beacon->head_len), beacon->head,
beacon->head_len);
- /*
- * Not very nice, but we want to allow the driver to call
- * ieee80211_beacon_get() as a response to the set_tim()
- * callback. That, however, is already invoked under the
- * sta_lock to guarantee consistent and race-free update
- * of the tim bitmap in mac80211 and the driver.
- */
- if (local->tim_in_locked_section) {
- ieee80211_beacon_add_tim(sdata, &ap->ps, skb);
- } else {
- unsigned long flags;
-
- spin_lock_irqsave(&local->tim_lock, flags);
- ieee80211_beacon_add_tim(sdata, &ap->ps, skb);
- spin_unlock_irqrestore(&local->tim_lock, flags);
- }
+ ieee80211_beacon_add_tim(sdata, &ap->ps, skb);
if (tim_offset)
*tim_offset = beacon->head_len;
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
