mac80211: update to version 2015-06-22

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

SVN-Revision: 46198

1 files changed, 35 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/302-ath-DFS-limit-number-of-potential-PRI-sequences.patch b/package/kernel/mac80211/patches/302-ath-DFS-limit-number-of-potential-PRI-sequences.patch
new file mode 100644
index 0000000000..e403e6a7ac
--- /dev/null
+++ b/package/kernel/mac80211/patches/302-ath-DFS-limit-number-of-potential-PRI-sequences.patch
@@ -0,0 +1,35 @@
+From: Zefir Kurtisi <zefir.kurtisi@neratec.com>
+Date: Tue, 16 Jun 2015 10:34:03 +0200
+Subject: [PATCH] ath: DFS - limit number of potential PRI sequences
+
+In the PRI detector, after the current radar pulse
+has been checked agains existing PRI sequences, it
+is considered as part of a new potential sequence.
+
+Previously, the condition to accept a new sequence
+was to have at least the same number of pulses as
+the longest matching sequence. This was wrong,
+since it led to duplicates of PRI sequences.
+
+This patch changes the acceptance criteria for new
+potential sequences from 'at least' to 'more than'
+the longest existing.
+
+Detection performance remains unaffected, while
+the number of PRI sequences accounted at runtime
+(and with it CPU load) is reduced by up to 50%.
+
+Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
+---
+
+--- a/drivers/net/wireless/ath/dfs_pri_detector.c
++++ b/drivers/net/wireless/ath/dfs_pri_detector.c
+@@ -273,7 +273,7 @@ static bool pseq_handler_create_sequence
+ 				tmp_false_count++;
+ 			}
+ 		}
+-		if (ps.count < min_count)
++		if (ps.count <= min_count)
+ 			/* did not reach minimum count, drop sequence */
+ 			continue;
+