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i40e: adjust ITR max and min values

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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>
This commit is contained in:
Shannon Nelson 2013-12-21 05:44:47 +00:00 committed by Jeff Kirsher
parent 8ee75a8ed0
commit 3126dcb736
1 changed files with 2 additions and 3 deletions
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5
drivers/net/ethernet/intel/i40e/i40e_txrx.h
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@ -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