Commit 485982a9 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Jeff Garzik
Browse files

skge: increase TX threshold for Jumbo 



Need to increase TX threshold when doing Jumbo frames on dual port board
to avoid underruns. (Code from sk98lin).

Signed-off-by: default avatarStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 21d7f677

drivers/net/skge.c

+5 −6
Original line number Diff line number Diff line
@@ -1633,14 +1633,13 @@ static void genesis_mac_init(struct skge_hw *hw, int port) 
	}

	xm_write16(hw, port, XM_RX_CMD, r);





	/* We want short frames padded to 60 bytes. */

	xm_write16(hw, port, XM_TX_CMD, XM_TX_AUTO_PAD);



	/*

	 * Bump up the transmit threshold. This helps hold off transmit

	 * underruns when we're blasting traffic from both ports at once.

	 */

	/* Increase threshold for jumbo frames on dual port */

	if (hw->ports > 1 && jumbo)

		xm_write16(hw, port, XM_TX_THR, 1020);

	else

		xm_write16(hw, port, XM_TX_THR, 512);



	/*