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skge: increase TX threshold for Jumbo

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

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger 2007-11-26 11:54:52 -08:00 committed by Jeff Garzik
parent 21d7f67700
commit 485982a99a
1 changed files with 5 additions and 6 deletions
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11
drivers/net/skge.c
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@ -1633,15 +1633,14 @@ 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.
*/
xm_write16(hw, port, XM_TX_THR, 512);
/* 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);
/*
* Enable the reception of all error frames. This is is