]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
i40e/i40evf: fix incorrect default ITR values on driver load
authorJacob Keller <jacob.e.keller@intel.com>
Thu, 7 Sep 2017 12:05:48 +0000 (08:05 -0400)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Mon, 9 Oct 2017 21:19:46 +0000 (14:19 -0700)
commit427025592955d245997b12923111e85f07850d5f
tree7274306438ef4357d250372d89d0fee84fb43d6a
parentc766b9af9abe897eb5480ef9ef3914fc07b815c5
i40e/i40evf: fix incorrect default ITR values on driver load

The ITR register expects to be programmed in units of 2 microseconds.
Because of this, all of the drivers I40E_ITR_* constants are in terms of
this 2 microsecond register.

Unfortunately, the rx_itr_default value is expected to be programmed in
microseconds.

Effectively the driver defaults to an ITR value of half the expected
value (in terms of minimum microseconds between interrupts).

Fix this by changing the default values to be calculated using
ITR_REG_TO_USEC macro which indicates that we're converting from the
register units into microseconds.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
drivers/net/ethernet/intel/i40e/i40e_main.c
drivers/net/ethernet/intel/i40e/i40e_txrx.h
drivers/net/ethernet/intel/i40evf/i40e_txrx.h
drivers/net/ethernet/intel/i40evf/i40evf_main.c