When the chip gets a transmit underrun, the driver resets the chip, which
cause the link to go down for several seconds on my Dlink DFE580-TX (quad-port DL1002). This behavior is unacceptable, especially as the driver usually gets several underrun at once, causing the link to be almost unaviable for several 10s of seconds. Bump the default transmit threshold to 1504 bytes to avoid transmit underrun.
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208589bfca
commit
dc66b51bca
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@ -1,4 +1,4 @@
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/* $NetBSD: if_ste.c,v 1.8 2002/06/01 17:20:13 bouyer Exp $ */
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/* $NetBSD: if_ste.c,v 1.9 2002/06/01 17:24:38 bouyer Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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@ -42,7 +42,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_ste.c,v 1.8 2002/06/01 17:20:13 bouyer Exp $");
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__KERNEL_RCSID(0, "$NetBSD: if_ste.c,v 1.9 2002/06/01 17:24:38 bouyer Exp $");
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#include "bpfilter.h"
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@ -504,9 +504,9 @@ ste_attach(struct device *parent, struct device *self, void *aux)
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IFQ_SET_READY(&ifp->if_snd);
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/*
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* Default the transmit threshold to 128 bytes.
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* Default the transmit threshold to 1504 bytes.
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*/
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sc->sc_txthresh = 128;
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sc->sc_txthresh = 1504;
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/*
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* Disable MWI if the PCI layer tells us to.
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