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

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
......@@ -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);
/*
......
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