mac80211: set an external flag for TDLS stations

Expose a new tdls flag for the public ieee80211_sta struct.
This can be used in some rate control decisions.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

include/net/mac80211.h

@@ -1374,6 +1374,7 @@ struct ieee80211_sta_rates {
  *	the station moves to associated state.
  * @smps_mode: current SMPS mode (off, static or dynamic)
  * @rates: rate control selection table
+ * @tdls: indicates whether the STA is a TDLS peer
  */
 struct ieee80211_sta {
 	u32 supp_rates[IEEE80211_NUM_BANDS];
@@ -1388,6 +1389,7 @@ struct ieee80211_sta {
 	enum ieee80211_sta_rx_bandwidth bandwidth;
 	enum ieee80211_smps_mode smps_mode;
 	struct ieee80211_sta_rates __rcu *rates;
+	bool tdls;
 
 	/* must be last */
 	u8 drv_priv[0] __aligned(sizeof(void *));

net/mac80211/cfg.c

@@ -1459,6 +1459,8 @@ static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
 	if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) {
 		sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
 		sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
+	} else {
+		sta->sta.tdls = true;
 	}
 
 	err = sta_apply_parameters(local, sta, params);