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-rw-r--r--package/kernel/mac80211/patches/336-ath9k-improve-powersave-filter-handling.patch70
1 files changed, 70 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/336-ath9k-improve-powersave-filter-handling.patch b/package/kernel/mac80211/patches/336-ath9k-improve-powersave-filter-handling.patch
new file mode 100644
index 0000000000..67a6c631ee
--- /dev/null
+++ b/package/kernel/mac80211/patches/336-ath9k-improve-powersave-filter-handling.patch
@@ -0,0 +1,70 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Tue, 2 Aug 2016 12:13:35 +0200
+Subject: [PATCH] ath9k: improve powersave filter handling
+
+For non-aggregated frames, ath9k was leaving handling of powersave
+filtered packets to mac80211. This can be too slow if the intermediate
+queue is already filled with packets and mac80211 does not immediately
+send a new packet via drv_tx().
+
+Improve response time with filtered frames by triggering clearing the
+powersave filter internally.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -461,13 +461,13 @@ static void ath_tx_count_frames(struct a
+ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
+ struct ath_buf *bf, struct list_head *bf_q,
+ struct ieee80211_sta *sta,
++ struct ath_atx_tid *tid,
+ struct ath_tx_status *ts, int txok)
+ {
+ struct ath_node *an = NULL;
+ struct sk_buff *skb;
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_info *tx_info;
+- struct ath_atx_tid *tid = NULL;
+ struct ath_buf *bf_next, *bf_last = bf->bf_lastbf;
+ struct list_head bf_head;
+ struct sk_buff_head bf_pending;
+@@ -509,7 +509,6 @@ static void ath_tx_complete_aggr(struct
+ }
+
+ an = (struct ath_node *)sta->drv_priv;
+- tid = ath_get_skb_tid(sc, an, skb);
+ seq_first = tid->seq_start;
+ isba = ts->ts_flags & ATH9K_TX_BA;
+
+@@ -695,6 +694,7 @@ static void ath_tx_process_buffer(struct
+ struct ieee80211_tx_info *info;
+ struct ieee80211_sta *sta;
+ struct ieee80211_hdr *hdr;
++ struct ath_atx_tid *tid = NULL;
+ bool txok, flush;
+
+ txok = !(ts->ts_status & ATH9K_TXERR_MASK);
+@@ -710,6 +710,12 @@ static void ath_tx_process_buffer(struct
+
+ hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
+ sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
++ if (sta) {
++ struct ath_node *an = (struct ath_node *)sta->drv_priv;
++ tid = ath_get_skb_tid(sc, an, bf->bf_mpdu);
++ if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY))
++ tid->clear_ps_filter = true;
++ }
+
+ if (!bf_isampdu(bf)) {
+ if (!flush) {
+@@ -721,7 +727,7 @@ static void ath_tx_process_buffer(struct
+ }
+ ath_tx_complete_buf(sc, bf, txq, bf_head, sta, ts, txok);
+ } else
+- ath_tx_complete_aggr(sc, txq, bf, bf_head, sta, ts, txok);
++ ath_tx_complete_aggr(sc, txq, bf, bf_head, sta, tid, ts, txok);
+
+ if (!flush)
+ ath_txq_schedule(sc, txq);