mac80211: update adjusting TBTT bit in beacon
This regression was introduced in "mac80211: cache mesh
beacon".
mesh_sync_offset_adjust_tbtt() was assuming that the
beacon would be rebuilt in every single pre-tbtt
interrupt, but now the beacon update happens on the
workqueue, and it must be ready for immediate delivery to
the driver.
Save a pointer to the meshconf IE in the beacon_data (this
works because both the IE pointer and beacon buffer are
protected by the same rcu_{dereference,assign_pointer}())
for quick updates during pre-tbtt. This is faster and a
little prettier than iterating over the elements to find
the meshconf IE every time.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 002ded2..2f0e176 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2604,8 +2604,7 @@
ieee80211_update_csa(sdata, bcn);
if (ifmsh->sync_ops)
- ifmsh->sync_ops->adjust_tbtt(
- sdata);
+ ifmsh->sync_ops->adjust_tbtt(sdata, bcn);
skb = dev_alloc_skb(local->tx_headroom +
bcn->head_len +