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authorAlexander Duyck <alexander.h.duyck@intel.com>2013-02-12 02:31:01 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2013-04-18 16:40:12 -0700
commit4e22766758cb8c971c971f3d335b974aaeb235fa (patch)
tree2d30f72f39909089a6a5736b217566870d38e78d
parentb646c22edef1c350d26237a6f60d3a890ceedf6e (diff)
downloadlinux-4e22766758cb8c971c971f3d335b974aaeb235fa.tar.bz2
igb: Use rx/tx_itr_setting when setting up initial value of itr
It turns out that the InterruptThrottleRate module parameter was only having the effect of locking the ITR at the starting ITR value. This was because the values stored in rx_itr_setting and tx_itr_setting were being ignored when configuring the initial itr_val of the q_vector. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index d27eb4ed7a09..d838ab1ea96f 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -1179,6 +1179,17 @@ static int igb_alloc_q_vector(struct igb_adapter *adapter,
/* initialize pointer to rings */
ring = q_vector->ring;
+ /* intialize ITR */
+ if (rxr_count) {
+ /* rx or rx/tx vector */
+ if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3)
+ q_vector->itr_val = adapter->rx_itr_setting;
+ } else {
+ /* tx only vector */
+ if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3)
+ q_vector->itr_val = adapter->tx_itr_setting;
+ }
+
if (txr_count) {
/* assign generic ring traits */
ring->dev = &adapter->pdev->dev;