Extern or forward variable declaration at drivers/net/ethernet/intel/i40e/i40e.h, line 643 References: drivers/net/ethernet/intel/i40e/i40e.h, line 643 drivers/net/ethernet/intel/i40e/i40e_debugfs.c, line 2244 drivers/net/ethernet/intel/i40e/i40e_ethtool.c, line 1077 drivers/net/ethernet/intel/i40e/i40e_main.c, line 34 drivers/net/ethernet/intel/i40e/i40e_main.c, line 9915 drivers/net/ethernet/intel/i40e/i40e_main.c, line 10604 drivers/net/ethernet/intel/i40e/i40e_main.c, line 10625 drivers/net/ethernet/intel/i40e/i40e_main.c, line 10627 drivers/net/ethernet/intel/i40e/i40e_ptp.c, line 608