qcacld-3.0: Avoid NSS and Antenna mode change during TDLS connection

In the api hdd_set_nss_params() and hdd_set_antenna_mode()
change in nss parameter or antenna mode cause the TDLS
teardown.

Add a check in api hdd_set_nss_params() and
hdd_set_antenna_mode() to prevent change in parameter
if there is a existing TDLS connection.

Change-Id: I8a58b8b0a617a8de490907e4c3181b15d90e0dbb
CRs-Fixed: 3789892

components/tdls/dispatcher/inc/wlan_tdls_api.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020, The Linux Foundation. All rights reserved.
- * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -104,6 +104,15 @@ wlan_tdls_notify_sta_connect(uint8_t vdev_id,
 			     bool tdls_prohibited,
 			     struct wlan_objmgr_vdev *vdev);
 
+/**
+ * wlan_is_tdls_session_present() - Get TDLS session status
+ * @vdev: vdev pointer
+ *
+ * Return: QDF_STATUS_SUCCESS if success; other value if failed
+ */
+QDF_STATUS
+wlan_is_tdls_session_present(struct wlan_objmgr_vdev *vdev);
+
 /**
  * wlan_tdls_update_tx_pkt_cnt() - update tx pkt count
  * @vdev: tdls vdev object

components/tdls/dispatcher/src/wlan_tdls_api.c

@@ -31,6 +31,7 @@
 #include <wlan_objmgr_cmn.h>
 #include "wlan_tdls_cfg_api.h"
 #include "wlan_policy_mgr_api.h"
+#include "wlan_mlo_mgr_sta.h"
 
 static QDF_STATUS tdls_teardown_flush_cb(struct scheduler_msg *msg)
 {
@@ -286,6 +287,50 @@ wlan_tdls_handle_sap_start(struct wlan_objmgr_psoc *psoc)
 {}
 #endif
 
+#ifdef WLAN_FEATURE_11BE_MLO
+static QDF_STATUS
+wlan_mlo_is_tdls_session_present(struct wlan_objmgr_vdev *vdev)
+{
+	uint8_t i;
+	struct wlan_mlo_dev_context *ml_dev = vdev->mlo_dev_ctx;
+
+	if (!ml_dev) {
+		tdls_err("MLO dev ctx is null");
+		return QDF_STATUS_E_FAILURE;
+	}
+
+	for (i = 0; i < ml_dev->wlan_vdev_count; i++) {
+		vdev = ml_dev->wlan_vdev_list[i];
+		if (tdls_get_connected_peer_count_from_vdev(vdev) > 0) {
+			tdls_debug("TDLS session is present");
+			return QDF_STATUS_SUCCESS;
+		}
+	}
+
+	return QDF_STATUS_E_INVAL;
+}
+#else
+static QDF_STATUS
+wlan_mlo_is_tdls_session_present(struct wlan_objmgr_vdev *vdev)
+{
+	return QDF_STATUS_E_INVAL;
+}
+#endif
+
+QDF_STATUS
+wlan_is_tdls_session_present(struct wlan_objmgr_vdev *vdev)
+{
+	if (mlo_is_mld_sta(vdev))
+		return wlan_mlo_is_tdls_session_present(vdev);
+
+	if (tdls_get_connected_peer_count_from_vdev(vdev) > 0) {
+		tdls_debug("TDLS session is present");
+		return QDF_STATUS_SUCCESS;
+	}
+
+	return QDF_STATUS_E_INVAL;
+}
+
 void wlan_tdls_notify_start_bss(struct wlan_objmgr_psoc *psoc,
 				struct wlan_objmgr_vdev *vdev)
 {