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mac80211: move add_tim to subfunction 

This functions will be used for mesh beacons, too.

Signed-off-by: Marco Porsch <marco@cozybit.com>
[some formatting fixes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Marco Porsch 2013-01-07 16:04:50 +01:00 committed by Johannes Berg
parent 1617bab8db
commit eac70c135d
1 changed files with 28 additions and 19 deletions
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47
net/mac80211/tx.c
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@ -2261,9 +2261,8 @@ 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 +2324,31 @@ 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 +2393,7 @@ 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;