From: Andrew Lunn <andrew.lunn@ascom.ch>
To: Gary Thomas <gthomas@cambridge.redhat.com>
Cc: Grant Edwards <grante@visi.com>, ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] RedBoot: __eth_install_handler?
Date: Tue, 23 Jan 2001 00:13:00 -0000 [thread overview]
Message-ID: <20010123091323.P11398@biferten.ma.tech.ascom.ch> (raw)
In-Reply-To: <XFMail.20010122155113.gthomas@cambridge.redhat.com>
> > The only way for that to happen would be for another host to
> > intentionally send a short Ethernet frame (AFAIK). Even if that
> > happens it should be caught by the checksum verification,
> > right?
> >
>
> That would certainly be true - the checksum routines will try
> and access the advertised length of data. I see no way that the
> computed value would match if the actual data was too short.
Depends if your hardware is broken, leaves checksum verification to
the software, or passes runt packets up. Its a bad assumption to
make. It was made once before and it broken when the i82559 broke this
assumption for promisc mode.
Andrew
next prev parent reply other threads:[~2001-01-23 0:13 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-22 11:54 Grant Edwards
2001-01-22 12:04 ` Gary Thomas
2001-01-22 12:53 ` Grant Edwards
2001-01-22 14:09 ` Grant Edwards
2001-01-22 14:51 ` Gary Thomas
2001-01-23 0:13 ` Andrew Lunn [this message]
2001-01-22 14:51 ` Grant Edwards
2001-01-22 15:56 ` Grant Edwards
2001-01-31 4:25 ` Gary Thomas
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