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mac80211: add ieee80211_txq_aql_pending()

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Add a function to allow drivers to query the pending AQL airtime
for a given txq, for both unicast and broadcast.
This will be used for mt76 to limit buffering in AP mode for power-save
stations.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2026-05-27 12:24:40 +02:00
parent d22ceb8d24
commit 36471ac3e4
1 changed files with 59 additions and 0 deletions
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package/kernel/mac80211/patches/subsys/321-wifi-mac80211-add-ieee80211_txq_aql_pending.patch Normal file
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@ -0,0 +1,59 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 23 Mar 2026 10:14:22 +0000
Subject: [PATCH] wifi: mac80211: add ieee80211_txq_aql_pending()
Add a function to allow drivers to query the pending AQL airtime
for a given txq, for both unicast and broadcast.
This will be used for mt76 to limit buffering in AP mode for power-save
stations.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -6603,6 +6603,17 @@ bool
ieee80211_txq_airtime_check(struct ieee80211_hw *hw, struct ieee80211_txq *txq);
/**
+ * ieee80211_txq_aql_pending - get pending AQL airtime for a txq
+ *
+ * @hw: pointer obtained from ieee80211_alloc_hw()
+ * @txq: pointer obtained from station or virtual interface
+ *
+ * Return: pending airtime (in usec) for the given txq.
+ */
+u32 ieee80211_txq_aql_pending(struct ieee80211_hw *hw,
+ struct ieee80211_txq *txq);
+
+/**
* ieee80211_iter_keys - iterate keys programmed into the device
* @hw: pointer obtained from ieee80211_alloc_hw()
* @vif: virtual interface to iterate, may be %NULL for all
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -4185,6 +4185,24 @@ bool ieee80211_txq_airtime_check(struct
}
EXPORT_SYMBOL(ieee80211_txq_airtime_check);
+u32 ieee80211_txq_aql_pending(struct ieee80211_hw *hw,
+ struct ieee80211_txq *txq)
+{
+ struct ieee80211_local *local = hw_to_local(hw);
+ struct sta_info *sta;
+
+ if (!txq->sta)
+ return atomic_read(&local->aql_bc_pending_airtime);
+
+ sta = container_of(txq->sta, struct sta_info, sta);
+
+ if (unlikely(txq->tid == IEEE80211_NUM_TIDS))
+ return 0;
+
+ return atomic_read(&sta->airtime[txq->ac].aql_tx_pending);
+}
+EXPORT_SYMBOL(ieee80211_txq_aql_pending);
+
static bool
ieee80211_txq_schedule_airtime_check(struct ieee80211_local *local, u8 ac)
{