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SubjectRe: storage over IP (was Re: [PLEASE-TESTME] Zerocopy networking patch,
> fixed length headers).  i've never investigated the actual protocols
> though so maybe the solution used was to just push a lot of the detail
> down into the controllers.

The stuff I have access to (MPT fusion) pushes the FC handling down onto the
board. Basically you talk scsi and IP to it (See drivers/message/fusion in

> <>
> show that both use TCP/IP. TCP/IP has variable length headers (or am i on
> crack?), which totally complicates the receive path.

TCP has variable length headers. It also prevents you re-ordering commands
in the stream which would be beneficial. I've not checked if the draft uses
multiple TCP streams but then you have scaling questions.


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