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

Message ID 20160928235631.9197-5-twp@qca.qualcomm.com (mailing list archive)
State Not Applicable
Delegated to: Kalle Valo
Headers show

Commit Message

Pedersen, Thomas Sept. 28, 2016, 11:56 p.m. UTC
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@qca.qualcomm.com>
 net/mac80211/mesh_sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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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;