From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next 11/16] i40e: adjust ITR max and min values Date: Fri, 10 Jan 2014 00:58:51 -0800 Message-ID: <1389344336-1558-12-git-send-email-jeffrey.t.kirsher@intel.com> References: <1389344336-1558-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Shannon Nelson , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Jesse Brandeburg , Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga11.intel.com ([192.55.52.93]:1468 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752205AbaAJI7G (ORCPT ); Fri, 10 Jan 2014 03:59:06 -0500 In-Reply-To: <1389344336-1558-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Shannon Nelson Set the ITR max and min values to match the hardware max value and the recommended min value. These values are shifted right one bit because the register counts in 2 usec units, so leave a comment to explain. Change-ID: I289c27955cf6c566a6d21b95c3110b88cbb15dad Signed-off-by: Shannon Nelson Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_txrx.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.h b/drivers/net/ethernet/intel/i40e/i40e_txrx.h index 6f8506c..93b8642 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.h +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.h @@ -29,9 +29,8 @@ /* Interrupt Throttling and Rate Limiting (storm control) Goodies */ -#define I40E_MAX_ITR 0x07FF -#define I40E_MIN_ITR 0x0001 -#define I40E_ITR_USEC_RESOLUTION 2 +#define I40E_MAX_ITR 0x0FF0 /* reg uses 2 usec resolution */ +#define I40E_MIN_ITR 0x0004 /* reg uses 2 usec resolution */ #define I40E_MAX_IRATE 0x03F #define I40E_MIN_IRATE 0x001 #define I40E_IRATE_USEC_RESOLUTION 4 -- 1.8.3.1