BSD net stack

Hi everyone,

I heard rumours that Haiku might be looking at a BSD stack,
so I just want to pipe up that Net-, Free- and DragonFly BSD
have 3 very distinct locking (/threading) models.

I would expect all 3 stacks to be of the same great quality,
but one of them is bound to better fit into Haiku than the others.

I'm no BSD expert but I believe this is the case:

NetBSD and OpenBSD: 
- crude SMP -- global kernel lock
- easy to port?

FreeBSD:
- reentrant kernel -- fine grained locking
- hard to port? 
(lots of locking code)

DragonFly BSD:
lockless SMP (I'm not sure what to call it) 
- threaded net stack 
- hard to port? 
(probably depends on DragonFly's LWKT, etc.)

I'm far from a BSD expert, so please do correct me 
if there's anything wrong in the above.

FWIW,
Jonas Sundström.                www.kirilla.com



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