iwlwifi: mvm: add thermal throttling and CT kill

In order to avoid NIC destruction due to high temperature,
CT kill will power down the NIC.

To avoid this, thermal throttling will decrease throughput
to prevent the NIC from reaching the temperature at which
CT kill is performed.

Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/iwlwifi/mvm/sta.h

@@ -275,6 +275,8 @@ struct iwl_mvm_tid_data {
  * @lock: lock to protect the whole struct. Since %tid_data is access from Tx
  * and from Tx response flow, it needs a spinlock.
  * @tid_data: per tid data. Look at %iwl_mvm_tid_data.
+ * @tx_protection: reference counter for controlling the Tx protection.
+ * @tt_tx_protection: is thermal throttling enable Tx protection?
  *
  * When mac80211 creates a station it reserves some space (hw->sta_data_size)
  * in the structure for use by driver. This structure is placed in that
@@ -296,6 +298,10 @@ struct iwl_mvm_sta {
 #ifdef CONFIG_PM_SLEEP
 	u16 last_seq_ctl;
 #endif
+
+	/* Temporary, until the new TLC will control the Tx protection */
+	s8 tx_protection;
+	bool tt_tx_protection;
 };
 
 /**