tree a02e051c9e0833c8e4112df7ab6503b9964a1366
parent 7f0a7c671cdc0396f99b60b77bd02e2dee7c4838
author Andrei Otcheretianski <andrei.otcheretianski@intel.com> 1401027862 +0300
committer Emmanuel Grumbach <emmanuel.grumbach@intel.com> 1404758481 +0300

iwlwifi: mvm: Use CS tx block bit for AP/GO

An AP/GO may perform the channel switch slightly before its stations.
This scenario may result in packet loss, since the transmission may start
before the client is actually on a new channel. In order to prevent
potential packet loss disable tx to all the stations when the channel
switch flow starts. Clear the disable_tx bit when a station is seen on a
target channel, or after IWL_MVM_CS_UNBLOCK_TX_TIMEOUT beacons on a new
channel. In addition call ieee80211_sta_block_awake in order to inform
mac80211 that the frames for this station should be buffered.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>