From cc783bfa67e87d2e6206f7626b7bbb74d5c5f269 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Tue, 20 Aug 2019 18:20:22 +0200 Subject: [PATCH 4/4] ath9k: dynack: set ackto to max timeout in ath_dynack_reset Initialize acktimeout to the maximum configurable value in ath_dynack_reset in order to not disconnect long distance static links enabling dynack and even to take care of possible errors configuring a static timeout. Moreover initialize station timeout value to the current acktimeout value Tested-by: Koen Vandeputte Signed-off-by: Lorenzo Bianconi --- drivers/net/wireless/ath/ath9k/dynack.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) --- a/drivers/net/wireless/ath/ath9k/dynack.c +++ b/drivers/net/wireless/ath/ath9k/dynack.c @@ -321,11 +321,9 @@ EXPORT_SYMBOL(ath_dynack_sample_ack_ts); */ void ath_dynack_node_init(struct ath_hw *ah, struct ath_node *an) { - /* ackto = slottime + sifs + air delay */ - u32 ackto = 9 + 16 + 64; struct ath_dynack *da = &ah->dynack; - an->ackto = ackto; + an->ackto = da->ackto; spin_lock_bh(&da->qlock); list_add_tail(&an->list, &da->nodes); @@ -356,20 +354,26 @@ EXPORT_SYMBOL(ath_dynack_node_deinit); */ void ath_dynack_reset(struct ath_hw *ah) { - /* ackto = slottime + sifs + air delay */ - u32 ackto = 9 + 16 + 64; struct ath_dynack *da = &ah->dynack; + struct ath_node *an; + + spin_lock_bh(&da->qlock); da->lto = jiffies + COMPUTE_TO; - da->ackto = ackto; da->st_rbf.t_rb = 0; da->st_rbf.h_rb = 0; da->ack_rbf.t_rb = 0; da->ack_rbf.h_rb = 0; + da->ackto = ath_dynack_get_max_to(ah); + list_for_each_entry(an, &da->nodes, list) + an->ackto = da->ackto; + /* init acktimeout */ - ath_dynack_set_timeout(ah, ackto); + ath_dynack_set_timeout(ah, da->ackto); + + spin_unlock_bh(&da->qlock); } EXPORT_SYMBOL(ath_dynack_reset); @@ -386,6 +390,8 @@ void ath_dynack_init(struct ath_hw *ah) spin_lock_init(&da->qlock); INIT_LIST_HEAD(&da->nodes); + /* ackto = slottime + sifs + air delay */ + da->ackto = 9 + 16 + 64; ah->hw->wiphy->features |= NL80211_FEATURE_ACKTO_ESTIMATION; }