Need to increase TX threshold when doing Jumbo frames on dual port board
to avoid underruns. (Code from sk98lin).
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
--- a/drivers/net/skge.c 2007-11-21 14:05:59.000000000 -0800
+++ b/drivers/net/skge.c 2007-11-21 14:06:15.000000000 -0800
@@ -1633,15 +1633,14 @@ static void genesis_mac_init(struct skge
}
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
--
Stephen Hemminger <[EMAIL PROTECTED]>
-
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