Commit 45bb006d authored by Przemyslaw Patynowski's avatar Przemyslaw Patynowski Committed by Tony Nguyen
Browse files

i40e: Fix ADQ rate limiting for PF 



Fix HW rate limiting for ADQ.
Fallback to kernel queue selection for ADQ, as it is network stack
that decides which queue to use for transmit with ADQ configured.
Reset PF after creation of VMDq2 VSIs required for ADQ, as to
reprogram TX queue contexts in i40e_configure_tx_ring.
Without this patch PF would limit TX rate only according to TC0.

Fixes: a9ce82f7 ("i40e: Enable 'channel' mode in mqprio for TC configs")
Signed-off-by: default avatarPrzemyslaw Patynowski <przemyslawx.patynowski@intel.com>
Signed-off-by: default avatarJan Sokolowski <jan.sokolowski@intel.com>
Tested-by: default avatarBharathi Sreenivas <bharathi.sreenivas@intel.com>
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent e7506d34

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

+3 −0
Original line number Diff line number Diff line
@@ -6659,6 +6659,9 @@ static int i40e_configure_queue_channels(struct i40e_vsi *vsi) 
			vsi->tc_seid_map[i] = ch->seid;

		}

	}



	/* reset to reconfigure TX queue contexts */

	i40e_do_reset(vsi->back, I40E_PF_RESET_FLAG, true);

	return ret;



err_free:

drivers/net/ethernet/intel/i40e/i40e_txrx.c

+2 −1
Original line number Diff line number Diff line
@@ -3688,7 +3688,8 @@ u16 i40e_lan_select_queue(struct net_device *netdev, 
	u8 prio;



	/* is DCB enabled at all? */

	if (vsi->tc_config.numtc == 1)

	if (vsi->tc_config.numtc == 1 ||

	    i40e_is_tc_mqprio_enabled(vsi->back))

		return netdev_pick_tx(netdev, skb, sb_dev);



	prio = skb->priority;