[PATCH rtw-next 01/15] wifi: rtw89: consider sta maximum AMSDU subframes number to decide TX work waiting
From: Ping-Ke Shih <pkshih@realtek.com>
Date: 2026-09-09 07:00:37
Subsystem:
realtek wireless driver (rtw89), the rest · Maintainers:
Ping-Ke Shih, Linus Torvalds
Consider the sta maximum AMSDU subframes as a factor to set agg_wait to 0 to avoid TX work waiting to yield better latency if real-time application lets AMSDU off by iw dev wlan0 set tidconf tids 0xff amsdu off Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> --- drivers/net/wireless/realtek/rtw89/phy.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c
index 501923d97971..c33b888bc0e3 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.c
+++ b/drivers/net/wireless/realtek/rtw89/phy.c@@ -3221,6 +3221,17 @@ static void rtw89_phy_set_txpwr_limit_ru_ax(struct rtw89_dev *rtwdev, } } +static int get_max_agg_wait(struct ieee80211_link_sta *link_sta, u16 amsdu_len) +{ + struct ieee80211_sta *sta = link_sta->sta; + int max_agg_wait = amsdu_len / 1500 - 1; + + if (sta->max_amsdu_subframes) + max_agg_wait = min(max_agg_wait, sta->max_amsdu_subframes - 1); + + return max_agg_wait; +} + struct rtw89_phy_iter_ra_data { struct rtw89_dev *rtwdev; struct sk_buff *c2h;
@@ -3345,7 +3356,7 @@ static void __rtw89_phy_c2h_ra_rpt_iter(struct rtw89_sta_link *rtwsta_link, *changed = true; } - rtwsta_link->max_agg_wait = link_sta->agg.max_rc_amsdu_len / 1500 - 1; + rtwsta_link->max_agg_wait = get_max_agg_wait(link_sta, amsdu_len); } static void rtw89_phy_c2h_ra_rpt_iter(void *data, struct ieee80211_sta *sta)
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2.25.1