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Commit cdf485be authored by John Fastabend's avatar John Fastabend Committed by Jeff Kirsher
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ixgbe: dcb: use DCB config values for FCoE traffic class on open 



Disabling and enabling DCB can cause FCoE hardware initialization to
occur on the incorrect traffic class when the up2tc mapping has not
yet been reconfigured.

Fix this by using the DCB configuration maps that are correct
and will be pushed at mqprio after DCB driver setup completes
successfully.

Signed-off-by: default avatarJohn Fastabend <john.r.fastabend@intel.com>
Tested-by: default avatarMarcus Dennis <marcusx.e.dennis@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent d2f5e7f3

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

+3 −1
Original line number Diff line number Diff line
@@ -4391,11 +4391,13 @@ static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter) 
	 * configuration later.

	 */

	if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {

		u8 prio_tc[MAX_USER_PRIORITY] = {0};

		int tc;

		struct ixgbe_ring_feature *f =

					&adapter->ring_feature[RING_F_FCOE];



		tc = netdev_get_prio_tc_map(dev, adapter->fcoe.up);

		ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc);

		tc = prio_tc[adapter->fcoe.up];

		f->indices = dev->tc_to_txq[tc].count;

		f->mask = dev->tc_to_txq[tc].offset;

	}