ixgbe: Address issues with Tx WHTRESH value not being set correctly
authorAlexander Duyck <alexander.h.duyck@intel.com>
Wed, 8 Feb 2012 07:49:38 +0000 (07:49 +0000)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Tue, 13 Mar 2012 03:28:25 +0000 (20:28 -0700)
commite954b374b4e42c5335679ec6d79ca2c50ce5d422
tree46c6b62fb2cb3021a7c8e9323749d1fdd13c8a78
parent46646e61ea068b11758e8ffed3f4db300323dfc6
ixgbe: Address issues with Tx WHTRESH value not being set correctly

This change is meant to address the fact that the tx_itr_setting was
dropping to 0 when no separate Tx vectors were provided.  This had resulted
in the driver incorrectly configuring the Tx ring with a WTHRESH of 1 in
order to avoid Tx hangs even though that was not necessary. This change
makes it so that we instead take a look at the Tx ring's q_vector to
determine if the ring will have an ITR value less than 8us.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c