[openwrt/openwrt] mac80211: add patch for allowing the driver to refresh aggregation sessions

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/97a060dce22e57a63d2f5410acd2a81382b3a6a9

commit 97a060dce22e57a63d2f5410acd2a81382b3a6a9
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Thu Mar 2 11:18:14 2023 +0100

    mac80211: add patch for allowing the driver to refresh aggregation sessions
    
    Required by a mt76 update
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 ...11-introduce-ieee80211_refresh_tx_agg_ses.patch | 60 ++++++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/package/kernel/mac80211/patches/subsys/325-wifi-mac80211-introduce-ieee80211_refresh_tx_agg_ses.patch b/package/kernel/mac80211/patches/subsys/325-wifi-mac80211-introduce-ieee80211_refresh_tx_agg_ses.patch
new file mode 100644
index 0000000000..acd6c126aa
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/325-wifi-mac80211-introduce-ieee80211_refresh_tx_agg_ses.patch
@@ -0,0 +1,60 @@
+From: Ryder Lee <ryder.lee at 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 at mediatek.com>
+---
+
+--- a/include/net/mac80211.h
++++ b/include/net/mac80211.h
+@@ -5970,6 +5970,18 @@ 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.