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authorFelix Fietkau <nbd@nbd.name>2017-07-24 10:48:26 +0200
committerFelix Fietkau <nbd@nbd.name>2017-07-24 10:48:26 +0200
commit22a74ed310fcda175105c46e22638ffe8e560bcd (patch)
treedff4e913860f8ab9f4b129317e21ea2eedc98eff /package/kernel/mac80211
parent9b6585b11a48c62566418b920afe14204f40f87b (diff)
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ath9k: fix more-data flag for buffered multicast packets
The flag needs to be cleared for the last packet in the list, not the first one. Fixes some issues with multicast packet loss for powersave clients connected to an ath9k AP. Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'package/kernel/mac80211')
-rw-r--r--package/kernel/mac80211/patches/331-ath9k-fix-more-data-flag-for-buffered-multicast-pack.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/331-ath9k-fix-more-data-flag-for-buffered-multicast-pack.patch b/package/kernel/mac80211/patches/331-ath9k-fix-more-data-flag-for-buffered-multicast-pack.patch
new file mode 100644
index 0000000000..d09c82cb97
--- /dev/null
+++ b/package/kernel/mac80211/patches/331-ath9k-fix-more-data-flag-for-buffered-multicast-pack.patch
@@ -0,0 +1,38 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 23 Jul 2017 14:58:22 +0200
+Subject: [PATCH] ath9k: fix more-data flag for buffered multicast packets
+
+The flag needs to be cleared for the last packet in the list, not the
+first one. Fixes some issues with multicast packet loss for powersave
+clients connected to an ath9k AP.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -2451,7 +2451,6 @@ void ath_tx_cabq(struct ieee80211_hw *hw
+ .txq = sc->beacon.cabq
+ };
+ struct ath_tx_info info = {};
+- struct ieee80211_hdr *hdr;
+ struct ath_buf *bf_tail = NULL;
+ struct ath_buf *bf;
+ LIST_HEAD(bf_q);
+@@ -2495,14 +2494,8 @@ void ath_tx_cabq(struct ieee80211_hw *hw
+ if (list_empty(&bf_q))
+ return;
+
+- bf = list_first_entry(&bf_q, struct ath_buf, list);
+- hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
+-
+- if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) {
+- hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+- dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
+- sizeof(*hdr), DMA_TO_DEVICE);
+- }
++ bf = list_last_entry(&bf_q, struct ath_buf, list);
++ ath9k_set_moredata(sc, bf, false);
+
+ ath_txq_lock(sc, txctl.txq);
+ ath_tx_fill_desc(sc, bf, txctl.txq, 0);