Commit 947dfc81 authored by Rodrigo Cataldo's avatar Rodrigo Cataldo Committed by Tony Nguyen
Browse files

igc: Fix hicredit calculation 



According to the Intel Software Manual for I225, Section 7.5.2.7,
hicredit should be multiplied by the constant link-rate value, 0x7736.

Currently, the old constant link-rate value, 0x7735, from the boards
supported on igb are being used, most likely due to a copy'n'paste, as
the rest of the logic is the same for both drivers.

Update hicredit accordingly.

Fixes: 1ab011b0 ("igc: Add support for CBS offloading")
Reviewed-by: default avatarKurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: default avatarRodrigo Cataldo <rodrigo.cadore@l-acoustics.com>
Acked-by: default avatarVinicius Costa Gomes <vinicius.gomes@intel.com>
Tested-by: default avatarNaama Meir <naamax.meir@linux.intel.com>
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent 9fb266dc

drivers/net/ethernet/intel/igc/igc_tsn.c

+1 −1
Original line number Diff line number Diff line
@@ -227,7 +227,7 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter) 
			wr32(IGC_TQAVCC(i), tqavcc);



			wr32(IGC_TQAVHC(i),

			     0x80000000 + ring->hicredit * 0x7735);

			     0x80000000 + ring->hicredit * 0x7736);

		} else {

			/* Disable any CBS for the queue */

			txqctl &= ~(IGC_TXQCTL_QAV_SEL_MASK);