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mac80211: Expose ieee80211_schedule_txq() function

Browse source 
Since we reworked ieee80211_return_txq() so it assumes that the caller
takes care of logging, we need another function that can be called without
holding any locks. Introduce ieee80211_schedule_txq() which serves this
purpose.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Toke Høiland-Jørgensen 2019-01-22 15:20:16 +01:00 committed by Johannes Berg
parent e073f7caa2
commit 390298e86f
3 changed files with 27 additions and 3 deletions
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13
include/net/mac80211.h
View file

@ -6209,6 +6209,19 @@ void ieee80211_txq_schedule_start(struct ieee80211_hw *hw, u8 ac)
void ieee80211_txq_schedule_end(struct ieee80211_hw *hw, u8 ac)
__releases(txq_lock);
/**
* ieee80211_schedule_txq - schedule a TXQ for transmission
*
* @hw: pointer as obtained from ieee80211_alloc_hw()
* @txq: pointer obtained from station or virtual interface
*
* Schedules a TXQ for transmission if it is not already scheduled. Takes a
* lock, which means it must *not* be called between
* ieee80211_txq_schedule_start() and ieee80211_txq_schedule_end()
*/
void ieee80211_schedule_txq(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
__acquires(txq_lock) __releases(txq_lock);
/**
* ieee80211_txq_may_transmit - check whether TXQ is allowed to transmit
*

4
net/mac80211/driver-ops.h
View file

@ -1176,9 +1176,7 @@ static inline void drv_wake_tx_queue(struct ieee80211_local *local,
static inline void schedule_and_wake_txq(struct ieee80211_local *local,
struct txq_info *txqi)
{
spin_lock_bh(&local->active_txq_lock[txqi->txq.ac]);
ieee80211_return_txq(&local->hw, &txqi->txq);
spin_unlock_bh(&local->active_txq_lock[txqi->txq.ac]);
ieee80211_schedule_txq(&local->hw, &txqi->txq);
drv_wake_tx_queue(local, txqi);
}

13
net/mac80211/tx.c
View file

@ -3703,6 +3703,19 @@ void ieee80211_return_txq(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(ieee80211_return_txq);
void ieee80211_schedule_txq(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
__acquires(txq_lock) __releases(txq_lock)
{
struct ieee80211_local *local = hw_to_local(hw);
struct txq_info *txqi = to_txq_info(txq);
spin_lock_bh(&local->active_txq_lock[txq->ac]);
ieee80211_return_txq(hw, txq);
spin_unlock_bh(&local->active_txq_lock[txq->ac]);
}
EXPORT_SYMBOL(ieee80211_schedule_txq);
bool ieee80211_txq_may_transmit(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
{