arp rewrite...

Julian Elischer julian at
Tue Dec 11 10:09:39 PST 2007

Li, Qing wrote:
> 	Last time when I sent an email to net@ for comments, I
> 	received only limited feedback. 
> 	The New ARP code in my home directory on FreeFall and was 
> 	lasted updated on June-8-2007. It was based on then 
> 	CURRENT (7.0) and was tested to be working fine at
> 	that time. A bit more work would be necessary in locking
> 	though. I asked for code review and folks to play 
> 	with it. Again, the feedback was really scant. 
> 	The code is accessible at 
> 	The question I asked then was "should I move forward?"
> 	I'd be more that happy to resume and be done with it.

I think that breaking the arp code from the routing code
need to proceed.

I see no reason to not have reference counted links from the 
routes to the arp code (for optimisation and compat reasons),
but it should be self standing.

I'll look at what you have..

> 	-- Qing
>> -----Original Message-----
>> From: owner-freebsd-net at 
>> [mailto:owner-freebsd-net at] On Behalf Of Luigi Rizzo
>> Sent: Tuesday, December 11, 2007 12:49 AM
>> To: Julian Elischer; ales.cerri at
>> Cc: FreeBSD Net
>> Subject: Re: arp rewrite...
>> On Tue, Dec 11, 2007 at 12:37:25AM -0800, Julian Elischer wrote:
>>> I believe Qing-li (Sp?) did an arp rewrite..
>> the story is a bit longer - Andre drafted the initial design, 
>> which i subsequently took over and with a student, Alessandro 
>> Cerri, (I am Cc-ing him) did a first implementation. This was 
>> probably around 2003.
>> Then Qing-li (Sp?) took over development of that code - last 
>> i heard of the code was around last summer.
>> I think our code at least was based on 4.x so it probably did 
>> not address locking very much (not sure how the routing code 
>> is locked these days, anyways).
>> Alessandro is actually around again playing with FreeBSD so 
>> he may remember more details (it was his thesis, after all!)
>> cheers
>> luigi
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