ath9k: add a bunch of powersave handling fixes

Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 49 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/339-ath9k-fix-moredata-bit-in-PS-buffered-frame-release.patch b/package/kernel/mac80211/patches/339-ath9k-fix-moredata-bit-in-PS-buffered-frame-release.patch
new file mode 100644
index 0000000..49b37e4
--- /dev/null
+++ b/package/kernel/mac80211/patches/339-ath9k-fix-moredata-bit-in-PS-buffered-frame-release.patch
@@ -0,0 +1,49 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 28 Aug 2016 13:13:01 +0200
+Subject: [PATCH] ath9k: fix moredata bit in PS buffered frame release
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1634,6 +1634,21 @@ void ath_tx_aggr_wakeup(struct ath_softc
+ 	}
+ }
+ 
++static void
++ath9k_set_moredata(struct ath_softc *sc, struct ath_buf *bf, bool val)
++{
++	struct ieee80211_hdr *hdr;
++	u16 mask = cpu_to_le16(IEEE80211_FCTL_MOREDATA);
++	u16 mask_val = mask * val;
++
++	hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
++	if ((hdr->frame_control & mask) != mask_val) {
++		hdr->frame_control = (hdr->frame_control & ~mask) | mask_val;
++		dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
++			sizeof(*hdr), DMA_TO_DEVICE);
++	}
++}
++
+ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
+ 				   struct ieee80211_sta *sta,
+ 				   u16 tids, int nframes,
+@@ -1664,6 +1679,7 @@ void ath9k_release_buffered_frames(struc
+ 			if (!bf)
+ 				break;
+ 
++			ath9k_set_moredata(sc, bf, true);
+ 			list_add_tail(&bf->list, &bf_q);
+ 			ath_set_rates(tid->an->vif, tid->an->sta, bf, true);
+ 			if (bf_isampdu(bf)) {
+@@ -1687,6 +1703,9 @@ void ath9k_release_buffered_frames(struc
+ 	if (list_empty(&bf_q))
+ 		return;
+ 
++	if (!more_data)
++		ath9k_set_moredata(sc, bf_tail, false);
++
+ 	info = IEEE80211_SKB_CB(bf_tail->bf_mpdu);
+ 	info->flags |= IEEE80211_TX_STATUS_EOSP;
+