From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To: davem@davemloft.net
Cc: Shannon Nelson <shannon.nelson@intel.com>,
netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com,
Jesse Brandeburg <jesse.brandeburg@intel.com>,
Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Subject: [net-next v3 11/17] i40e: adjust ITR max and min values
Date: Fri, 10 Jan 2014 16:47:24 -0800 [thread overview]
Message-ID: <1389401250-11509-12-git-send-email-jeffrey.t.kirsher@intel.com> (raw)
In-Reply-To: <1389401250-11509-1-git-send-email-jeffrey.t.kirsher@intel.com>
From: Shannon Nelson <shannon.nelson@intel.com>
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 <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
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
next prev parent reply other threads:[~2014-01-11 0:47 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-11 0:47 [net-next v3 00/17][pull request] Intel Wired LAN Driver Updates Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 01/17] i40e: use assignment instead of memcpy Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 02/17] i40e: drop unused macros Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 03/17] i40e: Update the Current NVM version Low value Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 04/17] i40e: Bump version Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 05/17] i40e: fix long lines Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 06/17] i40e: Cleanup Doxygen warnings Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 07/17] i40e: Setting queue count to 1 using ethtool is valid Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 08/17] i40e: do not bail when disabling if Tx queue disable fails Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 09/17] i40e: allow VF to remove any MAC filter Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 10/17] i40e: check for possible incorrect ipv6 checksum Jeff Kirsher
2014-01-11 0:47 ` Jeff Kirsher [this message]
2014-01-11 0:47 ` [net-next v3 12/17] i40e: clear qtx_head before enabling Tx queue Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 13/17] i40e: call clear_pxe after adminq is initialized Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 14/17] i40e: enable PTP Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 15/17] i40e: fix log message wording Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 16/17] i40e: Bump version Jeff Kirsher
2014-01-11 0:47 ` [net-next v3 17/17] i40evf: fix s390 build failure due to implicit prefetch.h Jeff Kirsher
2014-01-12 4:51 ` [net-next v3 00/17][pull request] Intel Wired LAN Driver Updates David Miller
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