From: "David S. Miller" <davem@davemloft.net>
To: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: rl@hellgate.ch, netdev@oss.sgi.com
Subject: Re: via-rhine unable to send back-to-back packets?
Date: Tue, 30 Nov 2004 12:25:03 -0800 [thread overview]
Message-ID: <20041130122503.0adac947.davem@davemloft.net> (raw)
In-Reply-To: <20041130064823.GA27872@xi.wantstofly.org>
On Tue, 30 Nov 2004 07:48:23 +0100
Lennert Buytenhek <buytenh@wantstofly.org> wrote:
> Yeah, preamble (8 bytes), CRC (4 bytes), inter-packet gap (12 bytes).
Ok.
> Perhaps the via-rhine simply can't send out packets back-to-back and
> needs 14 byte times of inter-packet gap. I couldn't find any stray +2
> in the driver anywhere but I'm just checking.
Or the via-rhine driver is not programming one of the registers
proper to get optimal spacing.
As with most Donald Becker drivers, many of the register layouts
are not documented in the sources so it's not possible to just
scan the driver looking for potential problems like this.
For example, maybe the TxConfig register has an "IPG" field but
we'll never know by reading anything in the driver source.
next prev parent reply other threads:[~2004-11-30 20:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-29 22:27 via-rhine unable to send back-to-back packets? Lennert Buytenhek
2004-11-30 1:25 ` David S. Miller
2004-11-30 6:48 ` Lennert Buytenhek
2004-11-30 17:41 ` Ben Greear
2004-12-01 19:55 ` Lennert Buytenhek
2004-11-30 20:25 ` David S. Miller [this message]
2004-11-30 22:06 ` Roger Luethi
2004-12-01 20:01 ` Lennert Buytenhek
2004-12-02 11:01 ` Roger Luethi
2004-12-02 11:09 ` Lennert Buytenhek
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