[net-next 09/14] i40e: allow XPS with QoS enabled

[Jeff Kirsher]

From: Jacob Keller <jacob.e.kel...@intel.com>

Recently, the kernel gained support for enabling XPS and QoS at the
same time. Thus, we no longer need to worry about the number of
traffic classes when enabling XPS.

Signed-off-by: Jacob Keller <jacob.e.kel...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_main.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c 
b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 74875ddaeb33..b26f615bed5a 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -2879,23 +2879,18 @@ static void i40e_vsi_free_rx_resources(struct i40e_vsi 
*vsi)
  **/
 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
 {
-       struct i40e_vsi *vsi = ring->vsi;
        int cpu;
 
        if (!ring->q_vector || !ring->netdev)
                return;
 
-       if ((vsi->tc_config.numtc <= 1) &&
-           !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state)) {
-               cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
-               netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
-                                   ring->queue_index);
-       }
+       /* We only initialize XPS once, so as not to overwrite user settings */
+       if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
+               return;
 
-       /* schedule our worker thread which will take care of
-        * applying the new filter changes
-        */
-       i40e_service_event_schedule(vsi->back);
+       cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
+       netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
+                           ring->queue_index);
 }
 
 /**
-- 
2.14.2