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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-09-14 21:13:01 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2010-09-14 21:13:01 +0000
commit872d5928d93dcbb73d86a06bfe3981cbd3e35baf (patch)
tree838c2277a9aa92427e3518005dcf7f3639aa975e
parent4c0c6cd52075880e4b8a8b9510d0ea048c707ded (diff)
mac80211: add a pending fix for a locking error in the aggregation reorder release code
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23060 3c298f89-4303-0410-b956-a3cf2f4a3e73
-rw-r--r--package/mac80211/patches/300-mac80211_release_reorder_fix.patch25
1 files changed, 25 insertions, 0 deletions
diff --git a/package/mac80211/patches/300-mac80211_release_reorder_fix.patch b/package/mac80211/patches/300-mac80211_release_reorder_fix.patch
new file mode 100644
index 000000000..a42d7ec13
--- /dev/null
+++ b/package/mac80211/patches/300-mac80211_release_reorder_fix.patch
@@ -0,0 +1,25 @@
+[PATCH] mac80211: hoist sta->lock from reorder release timer
+
+The patch "mac80211: AMPDU rx reorder timeout timer" clashes
+with "mac80211: use netif_receive_skb in ieee80211_rx callpath"
+
+The timer itself is part of the station's private struct and
+it gets killed whenever the station is removed. Therefore
+the extra sta->lock protection (that can interferes with the
+tx path) is not necessary.
+
+Reported-by: Ming Lei <tom.leiming@gmail.com>
+Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
+---
+--- a/net/mac80211/agg-rx.c
++++ b/net/mac80211/agg-rx.c
+@@ -129,9 +129,7 @@ static void sta_rx_agg_reorder_timer_exp
+ timer_to_tid[0]);
+
+ rcu_read_lock();
+- spin_lock(&sta->lock);
+ ieee80211_release_reorder_timeout(sta, *ptid);
+- spin_unlock(&sta->lock);
+ rcu_read_unlock();
+ }
+