wifi: mac80211: make mgd_protect_tdls_discover MLO-aware

Since userspace can choose now what link to establish the
TDLS on, we should know on what channel to do session protection.
Add a link id parameter to this callback.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230928172905.ef12ce3eb835.If864f406cfd9e24f36a2b88fd13a37328633fcf9@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

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

@@ -2345,7 +2345,8 @@ void iwl_mvm_teardown_tdls_peers(struct iwl_mvm *mvm);
 void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 			       bool sta_added);
 void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
-					   struct ieee80211_vif *vif);
+					   struct ieee80211_vif *vif,
+					   unsigned int link_id);
 int iwl_mvm_tdls_channel_switch(struct ieee80211_hw *hw,
 				struct ieee80211_vif *vif,
 				struct ieee80211_sta *sta, u8 oper_class,

drivers/net/wireless/intel/iwlwifi/mvm/tdls.c

@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2014 Intel Mobile Communications GmbH
  * Copyright (C) 2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2020, 2022 Intel Corporation
+ * Copyright (C) 2018-2020, 2022-2023 Intel Corporation
  */
 #include <linux/etherdevice.h>
 #include "mvm.h"
@@ -144,7 +144,8 @@ void iwl_mvm_recalc_tdls_state(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 }
 
 void iwl_mvm_mac_mgd_protect_tdls_discover(struct ieee80211_hw *hw,
-					   struct ieee80211_vif *vif)
+					   struct ieee80211_vif *vif,
+					   unsigned int link_id)
 {
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 	u32 duration = 2 * vif->bss_conf.dtim_period * vif->bss_conf.beacon_int;

include/net/mac80211.h

@@ -4522,7 +4522,8 @@ struct ieee80211_ops {
 				   struct ieee80211_prep_tx_info *info);
 
 	void	(*mgd_protect_tdls_discover)(struct ieee80211_hw *hw,
-					     struct ieee80211_vif *vif);
+					     struct ieee80211_vif *vif,
+					     unsigned int link_id);
 
 	int (*add_chanctx)(struct ieee80211_hw *hw,
 			   struct ieee80211_chanctx_conf *ctx);

net/mac80211/driver-ops.h

@@ -955,7 +955,8 @@ static inline void drv_mgd_complete_tx(struct ieee80211_local *local,
 
 static inline void
 drv_mgd_protect_tdls_discover(struct ieee80211_local *local,
-			      struct ieee80211_sub_if_data *sdata)
+			      struct ieee80211_sub_if_data *sdata,
+			      int link_id)
 {
 	might_sleep();
 	lockdep_assert_wiphy(local->hw.wiphy);
@@ -964,9 +965,12 @@ drv_mgd_protect_tdls_discover(struct ieee80211_local *local,
 		return;
 	WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION);
 
+	link_id = link_id > 0 ? link_id : 0;
+
 	trace_drv_mgd_protect_tdls_discover(local, sdata);
 	if (local->ops->mgd_protect_tdls_discover)
-		local->ops->mgd_protect_tdls_discover(&local->hw, &sdata->vif);
+		local->ops->mgd_protect_tdls_discover(&local->hw, &sdata->vif,
+						      link_id);
 	trace_drv_return_void(local);
 }
 

net/mac80211/tdls.c

@@ -1318,7 +1318,7 @@ int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev,
 		 * response frame. It is transmitted directly and not buffered
 		 * by the AP.
 		 */
-		drv_mgd_protect_tdls_discover(sdata->local, sdata);
+		drv_mgd_protect_tdls_discover(sdata->local, sdata, link_id);
 		fallthrough;
 	case WLAN_TDLS_SETUP_CONFIRM:
 	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: