aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorFelix Fietkau <nbd@nbd.name>2017-02-22 22:51:04 +0100
committerFelix Fietkau <nbd@nbd.name>2017-02-23 16:26:33 +0100
commit9edff13abd97e233d7242eb0136c3ff25c58e75f (patch)
treed28a7ec40baf3e73aa4f37d1a6f2bdbf7050143a
parent942ac18c8a6d7dbe9ad3b4ac9ef06cbd891ad954 (diff)
downloadupstream-9edff13abd97e233d7242eb0136c3ff25c58e75f.tar.gz
upstream-9edff13abd97e233d7242eb0136c3ff25c58e75f.tar.bz2
upstream-9edff13abd97e233d7242eb0136c3ff25c58e75f.zip
mac80211: disable potentially harmful PS software retry for A-MPDU sessions
Signed-off-by: Felix Fietkau <nbd@nbd.name>
-rw-r--r--package/kernel/mac80211/patches/322-mac80211-don-t-handle-filtered-frames-within-a-BA-se.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/322-mac80211-don-t-handle-filtered-frames-within-a-BA-se.patch b/package/kernel/mac80211/patches/322-mac80211-don-t-handle-filtered-frames-within-a-BA-se.patch
new file mode 100644
index 0000000000..66e1bfb4c1
--- /dev/null
+++ b/package/kernel/mac80211/patches/322-mac80211-don-t-handle-filtered-frames-within-a-BA-se.patch
@@ -0,0 +1,28 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 22 Feb 2017 16:13:17 +0100
+Subject: [PATCH] mac80211: don't handle filtered frames within a BA session
+
+When running a BA session, the driver (or the hardware) already takes
+care of retransmitting failed frames, since it has to keep the receiver
+reorder window in sync.
+
+Adding another layer of retransmit around that does not improve
+anything. In fact, it can only lead to some strong reordering with huge
+latency.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/net/mac80211/status.c
++++ b/net/mac80211/status.c
+@@ -51,7 +51,8 @@ static void ieee80211_handle_filtered_fr
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ int ac;
+
+- if (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER) {
++ if (info->flags & (IEEE80211_TX_CTL_NO_PS_BUFFER |
++ IEEE80211_TX_CTL_AMPDU)) {
+ ieee80211_free_txskb(&local->hw, skb);
+ return;
+ }