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Disabling TCP Offload on DD-WRT

Posted on 2013-01-25
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Last Modified: 2013-03-21
Hi Experts,

Does anyone knows how to disable TCP Offloading on DD-WRT?

Mine is running  "DD-WRT v24-sp2 (08/07/10) std" and the box didn't provide any ethtool utility.

Thanks
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Question by:d34dp00l13
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Darr247 earned 500 total points
ID: 38821448
There is no TCP Offloading in DD-WRT that I'm aware of... who told you there is?
DD-WRT is built with a linux kernel, and the last I heard all the linux kernel devs were opposed to building support for hardware TCP Offloading into the kernels.
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by:d34dp00l13
ID: 38823172
Hi Darr247, thanks for that info. the reason why I ask the question is when I run tcpdump on the DD-WRT, I can see that there are checksum occurring.
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LVL 44

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by:Darr247
ID: 38823291
What interface are you dumping?

It seems to me if you're seeing chksum's, that means the interface is calculating them... that function's not being offloaded to anything else.
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Author Closing Comment

by:d34dp00l13
ID: 39006295
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