Date: Tue, 29 Feb 2000 19:03:53 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Julian Elischer <julian@elischer.org> Cc: "Yevmenkin, Maksim N, CSCIO" <myevmenkin@att.com>, "'freebsd-current@freebsd.org'" <freebsd-current@FreeBSD.ORG>, "'freebsd-hackers@freebsd.org'" <freebsd-hackers@FreeBSD.ORG> Subject: Re: NETGRAPH (proposal. FINAL) Message-ID: <31675.951847433@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 29 Feb 2000 09:52:05 PST." <38BC0745.2781E494@elischer.org>
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In message <38BC0745.2781E494@elischer.org>, Julian Elischer writes: >> these are final patches for NETGRAPH. >> new features: >> - new hook ``divertin'' allows to put frame back to >> kernel stack. >> - new control message allows to set raw mode on >> ``divert'' hook. raw mode assumes that we have >> fully prepared frame and we do not have to update >> ``ether_shost'' field. > >This is good in theory, however the intel 82586 ethernet chip >(and 596 in 586 mode) will overwrite anything you put there anyhow >as it treats the header specially and fabricates it. >(unless you are running in some mode that is not usually used). >I don't know how many other chips do this but it may be misleading >for the user who sets this on such a chip because the source >address he sets will not be put on the wire. But the driver would know and could issue an error or warning in that case ? I guess the packet should be failed with ENOCANDO ? -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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