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From: Ryder Lee <ryder.lee@mediatek.com>
Date: Sat, 18 Feb 2023 01:50:05 +0800
Subject: [PATCH] wifi: mac80211: introduce
ieee80211_refresh_tx_agg_session_timer()
This allows low level drivers to refresh the tx agg session timer, based on
querying stats from the firmware usually. Especially for some mt76 devices
support .net_fill_forward_path would bypass mac80211, which leads to tx BA
session timeout for certain clients.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -5968,6 +5968,18 @@ void ieee80211_queue_delayed_work(struct
unsigned long delay);
/**
+ * ieee80211_refresh_tx_agg_session_timer - Refresh a tx agg session timer.
+ * @sta: the station for which to start a BA session
+ * @tid: the TID to BA on.
+ *
+ * This function allows low level driver to refresh tx agg session timer
+ * to maintain BA session, the session level will still be managed by the
+ * mac80211.
+ */
+void ieee80211_refresh_tx_agg_session_timer(struct ieee80211_sta *sta,
+ u16 tid);
+
+/**
* ieee80211_start_tx_ba_session - Start a tx Block Ack session.
* @sta: the station for which to start a BA session
* @tid: the TID to BA on.
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -552,6 +552,23 @@ void ieee80211_tx_ba_session_handle_star
ieee80211_send_addba_with_timeout(sta, tid_tx);
}
+void ieee80211_refresh_tx_agg_session_timer(struct ieee80211_sta *pubsta,
+ u16 tid)
+{
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+ struct tid_ampdu_tx *tid_tx;
+
+ if (WARN_ON_ONCE(tid >= IEEE80211_NUM_TIDS))
+ return;
+
+ tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]);
+ if (!tid_tx)
+ return;
+
+ tid_tx->last_tx = jiffies;
+}
+EXPORT_SYMBOL(ieee80211_refresh_tx_agg_session_timer);
+
/*
* After accepting the AddBA Response we activated a timer,
* resetting it after each frame that we send.
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