Bluetooth: Mesh: Add proxy test API

Adds internal proxy API to enhance testabillity of
the proxy implementation.

Signed-off-by: Anders Storrø <anders.storro@nordicsemi.no>

subsys/bluetooth/mesh/proxy.h

@@ -36,3 +36,4 @@ void bt_mesh_proxy_identity_stop(struct bt_mesh_subnet *sub);
 
 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);
+uint8_t bt_mesh_proxy_srv_connected_cnt(void);

subsys/bluetooth/mesh/proxy_cli.c

@@ -391,3 +391,12 @@ static void subnet_evt(struct bt_mesh_subnet *sub, enum bt_mesh_key_evt evt)
 BT_MESH_SUBNET_CB_DEFINE(proxy_cli) = {
 	.evt_handler = subnet_evt,
 };
+
+bool bt_mesh_proxy_cli_is_connected(uint16_t net_idx)
+{
+	if (find_proxy_srv(net_idx, true, false)) {
+		return true;
+	}
+
+	return false;
+}

subsys/bluetooth/mesh/proxy_cli.h

@@ -9,3 +9,5 @@ void bt_mesh_proxy_cli_adv_recv(const struct bt_le_scan_recv_info *info,
 				struct net_buf_simple *buf);
 
 bool bt_mesh_proxy_cli_relay(struct net_buf *buf);
+
+bool bt_mesh_proxy_cli_is_connected(uint16_t net_idx);

subsys/bluetooth/mesh/proxy_srv.c

@@ -1157,3 +1157,16 @@ BT_CONN_CB_DEFINE(conn_callbacks) = {
 	.connected = gatt_connected,
 	.disconnected = gatt_disconnected,
 };
+
+uint8_t bt_mesh_proxy_srv_connected_cnt(void)
+{
+	uint8_t cnt = 0;
+
+	for (int i = 0; i < ARRAY_SIZE(clients); i++) {
+		if (clients[i].cli) {
+			cnt++;
+		}
+	}
+
+	return cnt;
+}