diff --git a/subsys/bluetooth/mesh/adv_ext.c b/subsys/bluetooth/mesh/adv_ext.c
index 3466e734fce..eb7d40a4d75 100644
--- a/subsys/bluetooth/mesh/adv_ext.c
+++ b/subsys/bluetooth/mesh/adv_ext.c
@@ -21,6 +21,7 @@
 #include "adv.h"
 #include "net.h"
 #include "proxy.h"
+#include "pb_gatt_srv.h"
 
 /* Convert from ms to 0.625ms units */
 #define ADV_INT_FAST_MS    20
@@ -182,7 +183,7 @@ static void send_pending_adv(struct k_work *work)
 			BT_DBG("Proxy Advertising");
 		}
 	} else if (IS_ENABLED(CONFIG_BT_MESH_PB_GATT)) {
-		err = bt_mesh_prov_adv_start();
+		err = bt_mesh_pb_gatt_adv_start();
 		BT_DBG("PB-GATT Advertising");
 	}
 
diff --git a/subsys/bluetooth/mesh/adv_legacy.c b/subsys/bluetooth/mesh/adv_legacy.c
index a2568c0fbaf..6933a4912fd 100644
--- a/subsys/bluetooth/mesh/adv_legacy.c
+++ b/subsys/bluetooth/mesh/adv_legacy.c
@@ -28,6 +28,7 @@
 #include "host/ecc.h"
 #include "prov.h"
 #include "proxy.h"
+#include "pb_gatt_srv.h"
 
 /* Pre-5.0 controllers enforce a minimum interval of 100ms
  * whereas 5.0+ controllers can go down to 20ms.
@@ -143,7 +144,7 @@ static void adv_thread(void *p1, void *p2, void *p3)
 						BT_DBG("Proxy Advertising");
 					}
 				} else if (IS_ENABLED(CONFIG_BT_MESH_PB_GATT)) {
-					(void)bt_mesh_prov_adv_start();
+					(void)bt_mesh_pb_gatt_adv_start();
 					BT_DBG("PB-GATT Advertising");
 				}
 
diff --git a/subsys/bluetooth/mesh/main.c b/subsys/bluetooth/mesh/main.c
index d8e154fd0d0..d91ae262f30 100644
--- a/subsys/bluetooth/mesh/main.c
+++ b/subsys/bluetooth/mesh/main.c
@@ -36,6 +36,7 @@
 #include "access.h"
 #include "foundation.h"
 #include "proxy.h"
+#include "pb_gatt_srv.h"
 #include "settings.h"
 #include "mesh.h"
 
@@ -357,7 +358,7 @@ int bt_mesh_start(void)
 	if (!IS_ENABLED(CONFIG_BT_MESH_PROV) || !bt_mesh_prov_active() ||
 	    bt_mesh_prov_link.bearer->type == BT_MESH_PROV_ADV) {
 		if (IS_ENABLED(CONFIG_BT_MESH_PB_GATT)) {
-			(void)bt_mesh_proxy_prov_disable();
+			(void)bt_mesh_pb_gatt_disable();
 		}
 
 		if (IS_ENABLED(CONFIG_BT_MESH_GATT_PROXY)) {
diff --git a/subsys/bluetooth/mesh/pb_gatt.c b/subsys/bluetooth/mesh/pb_gatt.c
index 992eebe8785..e81eece3566 100644
--- a/subsys/bluetooth/mesh/pb_gatt.c
+++ b/subsys/bluetooth/mesh/pb_gatt.c
@@ -11,6 +11,7 @@
 #include "adv.h"
 #include "host/ecc.h"
 #include "prov.h"
+#include "pb_gatt_srv.h"
 
 #define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_MESH_DEBUG_PROV)
 #define LOG_MODULE_NAME bt_mesh_pb_gatt
@@ -42,7 +43,7 @@ static void reset_state(void)
 	/* If this fails, the protocol timeout handler will exit early. */
 	(void)k_work_cancel_delayable(&link.prot_timer);
 
-	link.rx_buf = bt_mesh_proxy_get_buf();
+	link.rx_buf = bt_mesh_pb_gatt_get_buf();
 }
 
 static void link_closed(enum prov_bearer_link_status status)
@@ -119,7 +120,7 @@ int bt_mesh_pb_gatt_close(struct bt_conn *conn)
 
 static int link_accept(const struct prov_bearer_cb *cb, void *cb_data)
 {
-	(void)bt_mesh_proxy_prov_enable();
+	(void)bt_mesh_pb_gatt_enable();
 	bt_mesh_adv_update();
 
 	link.cb = cb;
diff --git a/subsys/bluetooth/mesh/pb_gatt_srv.c b/subsys/bluetooth/mesh/pb_gatt_srv.c
index b09fdcb4401..168d9984cdd 100644
--- a/subsys/bluetooth/mesh/pb_gatt_srv.c
+++ b/subsys/bluetooth/mesh/pb_gatt_srv.c
@@ -30,6 +30,7 @@
 #include "access.h"
 #include "proxy.h"
 #include "proxy_msg.h"
+#include "pb_gatt_srv.h"
 
 #define CLIENT_BUF_SIZE 66
 
@@ -113,7 +114,7 @@ static void gatt_disconnected(struct bt_conn *conn, uint8_t reason)
 	bt_mesh_pb_gatt_close(conn);
 
 	if (bt_mesh_is_provisioned()) {
-		(void)bt_mesh_proxy_prov_disable();
+		(void)bt_mesh_pb_gatt_disable();
 
 		if (IS_ENABLED(CONFIG_BT_MESH_GATT_PROXY)) {
 			(void)bt_mesh_proxy_gatt_enable();
@@ -126,7 +127,7 @@ static void gatt_disconnected(struct bt_conn *conn, uint8_t reason)
 	bt_mesh_adv_update();
 }
 
-struct net_buf_simple *bt_mesh_proxy_get_buf(void)
+struct net_buf_simple *bt_mesh_pb_gatt_get_buf(void)
 {
 	struct net_buf_simple *buf = &cli.buf;
 
@@ -181,7 +182,7 @@ static struct bt_gatt_attr prov_attrs[] = {
 
 static struct bt_gatt_service prov_svc = BT_GATT_SERVICE(prov_attrs);
 
-int bt_mesh_proxy_prov_enable(void)
+int bt_mesh_pb_gatt_enable(void)
 {
 	BT_DBG("");
 
@@ -200,7 +201,7 @@ int bt_mesh_proxy_prov_enable(void)
 	return 0;
 }
 
-int bt_mesh_proxy_prov_disable(void)
+int bt_mesh_pb_gatt_disable(void)
 {
 	BT_DBG("");
 
@@ -281,7 +282,7 @@ static int gatt_send(struct bt_conn *conn,
 	return bt_gatt_notify_cb(conn, &params);
 }
 
-int bt_mesh_prov_adv_start(void)
+int bt_mesh_pb_gatt_adv_start(void)
 {
 	BT_DBG("");
 
diff --git a/subsys/bluetooth/mesh/pb_gatt_srv.h b/subsys/bluetooth/mesh/pb_gatt_srv.h
new file mode 100644
index 00000000000..d1501682f02
--- /dev/null
+++ b/subsys/bluetooth/mesh/pb_gatt_srv.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2017 Intel Corporation
+ * Copyright (c) 2021 Lingao Meng
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_SUBSYS_BLUETOOTH_MESH_PB_GATT_SRV_H_
+#define ZEPHYR_SUBSYS_BLUETOOTH_MESH_PB_GATT_SRV_H_
+
+#include <bluetooth/gatt.h>
+
+int bt_mesh_pb_gatt_send(struct bt_conn *conn, struct net_buf_simple *buf,
+			 bt_gatt_complete_func_t end, void *user_data);
+
+int bt_mesh_pb_gatt_enable(void);
+int bt_mesh_pb_gatt_disable(void);
+
+struct net_buf_simple *bt_mesh_pb_gatt_get_buf(void);
+
+int bt_mesh_pb_gatt_adv_start(void);
+
+#endif /* ZEPHYR_SUBSYS_BLUETOOTH_MESH_PB_GATT_SRV_H_ */
diff --git a/subsys/bluetooth/mesh/prov_device.c b/subsys/bluetooth/mesh/prov_device.c
index ef6eca7e0ad..dede7a7e067 100644
--- a/subsys/bluetooth/mesh/prov_device.c
+++ b/subsys/bluetooth/mesh/prov_device.c
@@ -37,6 +37,7 @@
 #include "access.h"
 #include "foundation.h"
 #include "proxy.h"
+#include "pb_gatt_srv.h"
 #include "prov.h"
 #include "settings.h"
 
@@ -649,7 +650,7 @@ int bt_mesh_prov_disable(bt_mesh_prov_bearer_t bearers)
 
 	if (IS_ENABLED(CONFIG_BT_MESH_PB_GATT) &&
 	    (bearers & BT_MESH_PROV_GATT)) {
-		(void)bt_mesh_proxy_prov_disable();
+		(void)bt_mesh_pb_gatt_disable();
 	}
 
 	return 0;
diff --git a/subsys/bluetooth/mesh/proxy.h b/subsys/bluetooth/mesh/proxy.h
index b535fa2e866..2757827b2d8 100644
--- a/subsys/bluetooth/mesh/proxy.h
+++ b/subsys/bluetooth/mesh/proxy.h
@@ -40,10 +40,7 @@ void bt_mesh_proxy_gatt_disconnect(void);
 
 void bt_mesh_proxy_beacon_send(struct bt_mesh_subnet *sub);
 
-struct net_buf_simple *bt_mesh_proxy_get_buf(void);
-
 int bt_mesh_proxy_adv_start(void);
-int bt_mesh_prov_adv_start(void);
 
 void bt_mesh_proxy_identity_start(struct bt_mesh_subnet *sub);
 void bt_mesh_proxy_identity_stop(struct bt_mesh_subnet *sub);
@@ -52,5 +49,3 @@ bool bt_mesh_proxy_relay(struct net_buf *buf, uint16_t dst);
 void bt_mesh_proxy_addr_add(struct net_buf_simple *buf, uint16_t addr);
 
 int bt_mesh_proxy_init(void);
-
-#endif /* ZEPHYR_SUBSYS_BLUETOOTH_MESH_PROXY_H_ */
diff --git a/subsys/bluetooth/mesh/proxy_msg.h b/subsys/bluetooth/mesh/proxy_msg.h
index a3a4e05f6b8..fb679ec9a0f 100644
--- a/subsys/bluetooth/mesh/proxy_msg.h
+++ b/subsys/bluetooth/mesh/proxy_msg.h
@@ -18,6 +18,11 @@
 #define CFG_FILTER_REMOVE  0x02
 #define CFG_FILTER_STATUS  0x03
 
+#define BT_MESH_PROXY_NET_PDU   0x00
+#define BT_MESH_PROXY_BEACON    0x01
+#define BT_MESH_PROXY_CONFIG    0x02
+#define BT_MESH_PROXY_PROV      0x03
+
 #define PDU_HDR(sar, type) (sar << 6 | (type & BIT_MASK(6)))
 
 typedef int (*proxy_send_cb_t)(struct bt_conn *conn,
diff --git a/subsys/bluetooth/mesh/settings.c b/subsys/bluetooth/mesh/settings.c
index e29a1449c64..33f1e0703cb 100644
--- a/subsys/bluetooth/mesh/settings.c
+++ b/subsys/bluetooth/mesh/settings.c
@@ -26,6 +26,7 @@
 #include "heartbeat.h"
 #include "access.h"
 #include "proxy.h"
+#include "pb_gatt_srv.h"
 #include "settings.h"
 #include "cfg.h"
 
@@ -61,7 +62,7 @@ static int mesh_commit(void)
 	}
 
 	if (IS_ENABLED(CONFIG_BT_MESH_PB_GATT)) {
-		(void)bt_mesh_proxy_prov_disable();
+		(void)bt_mesh_pb_gatt_disable();
 	}
 
 	bt_mesh_net_settings_commit();