mac80211: mesh: decrease max drift

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
back.

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

Signed-off-by: Thomas Pedersen <twp@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/mesh_sync.c b/net/mac80211/mesh_sync.c
index 22ca43c500e48d7d83ba431675a489b619256f7f..faca22cd02b59cf9c79e20307fe47f36a562ad60 100644 (file)
--- 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;