Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 2 Apr 2003 16:03:02 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: Deactivating TCP checksumming |
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On Wed, 2 Apr 2003, Dennis Cook wrote:
> What I was looking for is a general capability to keep the SW transport > stack from > computing outgoing TCP/UDP/IP checksums so that the HW can be allowed to do > it, > similar to Windows checksum offload capability. REALLY? Who are you kidding. Windows has no such capability.
Check \WINDOWS\SYSTEM32\DRIVERS\ETC\* and see who they stole the TCP/IP stack from!
Further, when you perform normal user->TCP/IP operations, you get checksumming for free as part of the copy operation. It's only when you don't even copy data that you can get any advantage of not checksumming. That's why sendfile disables it.
Cheers, Dick Johnson Penguin : Linux version 2.4.20 on an i686 machine (797.90 BogoMips). Why is the government concerned about the lunatic fringe? Think about it.
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