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@@ -1,139 +0,0 @@
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-From: Lorenzo Bianconi <[email protected]>
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-Date: Fri, 2 Nov 2018 21:49:58 +0100
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-Subject: [PATCH] ath9k: dynack: make ewma estimation faster
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-
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-In order to make propagation time estimation faster,
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-use current sample as ewma output value during 'late ack'
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-tracking
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-
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-Tested-by: Koen Vandeputte <[email protected]>
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-Signed-off-by: Lorenzo Bianconi <[email protected]>
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----
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-
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---- a/drivers/net/wireless/ath/ath9k/ath9k.h
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-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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-@@ -274,7 +274,7 @@ struct ath_node {
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- #endif
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- u8 key_idx[4];
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-
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-- u32 ackto;
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-+ int ackto;
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- struct list_head list;
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- };
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-
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---- a/drivers/net/wireless/ath/ath9k/dynack.c
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-+++ b/drivers/net/wireless/ath/ath9k/dynack.c
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-@@ -29,9 +29,13 @@
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- * ath_dynack_ewma - EWMA (Exponentially Weighted Moving Average) calculation
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- *
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- */
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--static inline u32 ath_dynack_ewma(u32 old, u32 new)
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-+static inline int ath_dynack_ewma(int old, int new)
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- {
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-- return (new * (EWMA_DIV - EWMA_LEVEL) + old * EWMA_LEVEL) / EWMA_DIV;
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-+ if (old > 0)
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-+ return (new * (EWMA_DIV - EWMA_LEVEL) +
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-+ old * EWMA_LEVEL) / EWMA_DIV;
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-+ else
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-+ return new;
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- }
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-
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- /**
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-@@ -82,10 +86,10 @@ static inline bool ath_dynack_bssidmask(
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- */
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- static void ath_dynack_compute_ackto(struct ath_hw *ah)
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- {
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-- struct ath_node *an;
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-- u32 to = 0;
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-- struct ath_dynack *da = &ah->dynack;
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- struct ath_common *common = ath9k_hw_common(ah);
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-+ struct ath_dynack *da = &ah->dynack;
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-+ struct ath_node *an;
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-+ int to = 0;
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-
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- list_for_each_entry(an, &da->nodes, list)
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- if (an->ackto > to)
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-@@ -144,7 +148,8 @@ static void ath_dynack_compute_to(struct
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- an->ackto = ath_dynack_ewma(an->ackto,
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- ackto);
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- ath_dbg(ath9k_hw_common(ah), DYNACK,
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-- "%pM to %u\n", dst, an->ackto);
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-+ "%pM to %d [%u]\n", dst,
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-+ an->ackto, ackto);
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- if (time_is_before_jiffies(da->lto)) {
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- ath_dynack_compute_ackto(ah);
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- da->lto = jiffies + COMPUTE_TO;
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-@@ -166,10 +171,12 @@ static void ath_dynack_compute_to(struct
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- * @ah: ath hw
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- * @skb: socket buffer
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- * @ts: tx status info
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-+ * @sta: station pointer
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- *
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- */
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- void ath_dynack_sample_tx_ts(struct ath_hw *ah, struct sk_buff *skb,
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-- struct ath_tx_status *ts)
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-+ struct ath_tx_status *ts,
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-+ struct ieee80211_sta *sta)
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- {
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- struct ieee80211_hdr *hdr;
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- struct ath_dynack *da = &ah->dynack;
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-@@ -191,9 +198,16 @@ void ath_dynack_sample_tx_ts(struct ath_
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- ieee80211_is_assoc_resp(hdr->frame_control) ||
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- ieee80211_is_auth(hdr->frame_control)) {
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- ath_dbg(common, DYNACK, "late ack\n");
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-+
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- ath9k_hw_setslottime(ah, (LATEACK_TO - 3) / 2);
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- ath9k_hw_set_ack_timeout(ah, LATEACK_TO);
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- ath9k_hw_set_cts_timeout(ah, LATEACK_TO);
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-+ if (sta) {
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-+ struct ath_node *an;
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-+
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-+ an = (struct ath_node *)sta->drv_priv;
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-+ an->ackto = -1;
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-+ }
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- da->lto = jiffies + LATEACK_DELAY;
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- }
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-
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---- a/drivers/net/wireless/ath/ath9k/dynack.h
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-+++ b/drivers/net/wireless/ath/ath9k/dynack.h
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-@@ -86,7 +86,8 @@ void ath_dynack_node_deinit(struct ath_h
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- void ath_dynack_init(struct ath_hw *ah);
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- void ath_dynack_sample_ack_ts(struct ath_hw *ah, struct sk_buff *skb, u32 ts);
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- void ath_dynack_sample_tx_ts(struct ath_hw *ah, struct sk_buff *skb,
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-- struct ath_tx_status *ts);
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-+ struct ath_tx_status *ts,
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-+ struct ieee80211_sta *sta);
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- #else
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- static inline void ath_dynack_init(struct ath_hw *ah) {}
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- static inline void ath_dynack_node_init(struct ath_hw *ah,
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-@@ -97,7 +98,8 @@ static inline void ath_dynack_sample_ack
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- struct sk_buff *skb, u32 ts) {}
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- static inline void ath_dynack_sample_tx_ts(struct ath_hw *ah,
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- struct sk_buff *skb,
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-- struct ath_tx_status *ts) {}
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-+ struct ath_tx_status *ts,
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-+ struct ieee80211_sta *sta) {}
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- #endif
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-
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- #endif /* DYNACK_H */
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---- a/drivers/net/wireless/ath/ath9k/xmit.c
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-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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-@@ -629,7 +629,7 @@ static void ath_tx_complete_aggr(struct
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- if (bf == bf->bf_lastbf)
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- ath_dynack_sample_tx_ts(sc->sc_ah,
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- bf->bf_mpdu,
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-- ts);
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-+ ts, sta);
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- }
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-
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- ath_tx_complete_buf(sc, bf, txq, &bf_head, sta, ts,
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-@@ -773,7 +773,8 @@ static void ath_tx_process_buffer(struct
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- memcpy(info->control.rates, bf->rates,
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- sizeof(info->control.rates));
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- ath_tx_rc_status(sc, bf, ts, 1, txok ? 0 : 1, txok);
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-- ath_dynack_sample_tx_ts(sc->sc_ah, bf->bf_mpdu, ts);
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-+ ath_dynack_sample_tx_ts(sc->sc_ah, bf->bf_mpdu, ts,
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-+ sta);
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- }
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- ath_tx_complete_buf(sc, bf, txq, bf_head, sta, ts, txok);
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- } else
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