From: Stephen Hemminger <shemminger@osdl.org>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: Jeff Garzik <jgarzik@pobox.com>, netdev@vger.kernel.org
Subject: [PATCH] sky2: set lower pause threshold to prevent overrun
Date: Mon, 9 Oct 2006 15:49:27 -0700 [thread overview]
Message-ID: <20061009154927.51aac742@freekitty> (raw)
In-Reply-To: <20061009144038.6d3a93d6@freekitty>
Adjust the pause threshold on slower systems to keep from getting overrun.
Since FIFO is 2K bytes, don't send XON pause until there is space for a full
frame.
---
drivers/net/sky2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- sky2.orig/drivers/net/sky2.c 2006-10-09 15:43:51.000000000 -0700
+++ sky2/drivers/net/sky2.c 2006-10-09 15:43:52.000000000 -0700
@@ -683,7 +683,7 @@
sky2_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
if (hw->chip_id == CHIP_ID_YUKON_EC_U) {
- sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 768/8);
+ sky2_write8(hw, SK_REG(port, RX_GMF_LP_THR), 512/8);
sky2_write8(hw, SK_REG(port, RX_GMF_UP_THR), 1024/8);
if (hw->dev[port]->mtu > ETH_DATA_LEN) {
/* set Tx GMAC FIFO Almost Empty Threshold */
next prev parent reply other threads:[~2006-10-09 22:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-09 21:40 [PATCH] sky2: revert pci express extensions Stephen Hemminger
2006-10-09 22:49 ` Stephen Hemminger [this message]
2006-10-09 23:47 ` Matthias Hentges
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