Re: ipv4: Simplify ARP hash function.

On Fri, Jul 8, 2011 at 3:32 PM, David Miller [off-list ref] wrote:

So what is the cheapest non-linear function we could use?

I'm not comfortable giving cryptographic advice, but even + (addition
with carry) is nonlinear when combined with ^.  However that seems
like the low-order bits might be too predictable.

Maybe * of hash key with a random odd value is good enough?

 - R.