Date: Thu, 27 Sep 2001 10:11:33 -0600 (MDT) From: Ronald G Minnich <rminnich@lanl.gov> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: "Louis A. Mamakos" <louie@TransSys.COM>, <hackers@FreeBSD.ORG> Subject: Re: TCP&IP cksum offload on FreeBSD 4.2 Message-ID: <Pine.LNX.4.33.0109271009300.27057-100000@snaresland.acl.lanl.gov> In-Reply-To: <15283.19536.410864.339942@grasshopper.cs.duke.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
On Thu, 27 Sep 2001, Andrew Gallatin wrote: > At this level, you're basically screwed. A sofware checksum isn't > even an option on other PCI users, like disk controllers. If you > don't trust your PCI chipset, what do you do about things like that? > > I'm rather curious -- what was the problematic hardware combination? Can't say yet :-( But it is one of the fancy network interfaces that essentially runs an RTOS on the NIC so it can "help you". Actually fancy $5000 network interfaces are in general less reliable than your average garden-variety $2 IDE chip. Partly because they have so much capability. So we don't worry a lot about lossage with IDE. But it's a big problem on expensive, high end, high performance network interfaces. ron To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.LNX.4.33.0109271009300.27057-100000>