[PATCH 4/4] mac80211: mesh: decrease max drift

Thomas Pedersen twp at qca.qualcomm.com
Wed Sep 28 16:56:31 PDT 2016

The old value was 30ms, which means mesh sync will treat
any value below as merely TSF drift. This isn't really
reasonable (typical drift is < 10us/s) since people
probably want to adjust TSF in smaller increments (for ie.
beacon collision avoidance) without mesh sync fighting

Change max drift adjustment to 0.8ms, so manual TSF
adjustments can be made in 1ms increments, with some

Signed-off-by: Thomas Pedersen <twp at qca.qualcomm.com>
 net/mac80211/mesh_sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c
index 22ca43c..faca22c 100644
--- a/net/mac80211/mesh_sync.c
+++ b/net/mac80211/mesh_sync.c
@@ -28,7 +28,7 @@
  * could be, for instance, in case a neighbor is restarted and its TSF counter
  * reset.
-#define TOFFSET_MAXIMUM_ADJUSTMENT 30000		/* 30 ms */
+#define TOFFSET_MAXIMUM_ADJUSTMENT 800		/* 0.8 ms */
 struct sync_method {
 	u8 method;

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