On Wed, 2016-12-21 at 11:39 -0500, Rik van Riel wrote:

> Does anybody still have a P4?
> 
> If they do, they're probably better off replacing
> it with an Atom. The reduced power bills will pay
> for replacing that P4 within a year or two.

Well, maybe they have millions of units to replace.

> 
> In short, I am not sure how important the P4
> performance numbers are, especially if we can
> improve security for everybody else...

Worth adding that the ISN or syncookie generation are less than 10% of
the actual cost of handling a problematic (having to generate ISN or
syncookie) TCP packet anyway.

So we are talking of minors potential impact for '2000-era' cpus.

Definitely I vote for using SipHash in TCP ASAP.


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