Re: Mark Russinovich's reponse Was: [OT] Comments to WinNT Mag !! (fwd)

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 7 May 1999 14:48:45 +0100 (BST)

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> Could someone please clue me in on how this works? I don't understand
> how we can do zero copy without hardware checksumming... and in the

You can't

> cases we do, surely the overhead of twiddling this hardware is
> comparable to copying 1500 bytes of data? (For HIPPI I can see it

Actually you generally get it for free. IP checksum silicon isnt hard

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