Commit 0672a091 authored Apr 01, 2014 by Neerav Parikh Committed by Jeff Kirsher Apr 28, 2014

i40e: Redistribute queue vectors after DCB reconfiguration



The queue vectors are originally distributed among the total
number of queues that are configured for a given VSI. The number
of queues that are configured for a VSI depends on the number of
TCs that are enabled for the VSI at VSI setup/creation time.

But, the total number of queues that are configured for a VSI may
change based on change in the total number of TCs enabled as a
result of change in DCB configuration based on DCBX.

Hence, it is required for the queue vectors to be redistributed
when the total queues that are configured for a given VSI changes.

Without redistributing the vectors the queues that are configured
for the newly enabled TCs may not be able to do any Tx/Rx.

Change-ID: I4e780903db019e6199c7ce43627cef22c916acfe
Signed-off-by: Neerav Parikh <Neerav.Parikh@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

parent d2466013

drivers/net/ethernet/intel/i40e/i40e_main.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -4027,6 +4027,8 @@ static void i40e_dcb_reconfigure(struct i40e_pf *pf)
		pf->vsi[v]->seid);
		/* Will try to configure as many components */
		} else {
		/* Re-configure VSI vectors based on updated TC map */
		i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
		if (pf->vsi[v]->netdev)
		i40e_dcbnl_set_all(pf->vsi[v]);
		}