OB:AsiaBSDCon 2008 and MPLS

Contributed by
[url=http://undeadly.org/d'oh]johan[/url]
on Mon Apr 14 15:17:23 2008 (GMT)
from the big-in-japan dept.
Claudio Jeker (claudio@) sends in this nice story about what he has been doing lately and where OpenBSD network internals are headed next, enjoy:
I just came back from a nice
trip to japan
. As people may have noticed I did a presentation about the
OpenBSD network stack internals
and some upcoming changes inside it.
I crammed as much information into the available 45min slot as possible and still only covered the tip of the iceberg. The correct use of mbufs itself would fill a full presentation. This comes from the fact that many mbuf functions have more or less nasty side effects. The main idea of the talk was to explain how packets flow through the network stack. I hope this may help other people to untangle the maze of calls.
All in all AsiaBSDCon was a very nice event. A good occasion to meet and talk to other people. Unfortunately mine was the only OpenBSD talk however I can recommend it to everyone and I hope next year more
OpenBSD papers
are presented and more OpenBSD people are joining the event.
Now I'm back home and the world is not standing still. First of all the plan to get MPLS support into OpenBSD is getting more concrete. norby@, laurent@ and I started again to bring the old
ayame code base
ready for OpenBSD. There is still a lot missing, the label switching process is very different to routing. The routing code does a longest prefix lookup on the destination; while label switching does a perfect match on the incoming interface label pair, and then a push, pop or swap operation changes the label in the packet. Our routing code is currently not able to represent such a logic in a clean way. The other huge missing piece is LDP -- the label distribution protocol -- necessary to setup label switch paths in a dynamic fashion.
In less than a month a network
hackathon
will happen and hopefully we will get some of the code committed. If people are interested in helping out with testing or writing missing code don't hesitate to contact me.
Thanks Claudio for sending us this blog and thanks for all the hard work you have put into OpenBSD.
Please
donate
to the project in order to make sure we can have this and other hackathons further down the road!


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/4206/showart_537062.html

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