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List:       openbsd-misc
Subject:    Re: Device agnostic networking interface
From:       "J.C. Roberts" <list-jcr () designtools ! org>
Date:       2010-01-31 23:07:11
Message-ID: 20100131150711.090afe17.list-jcr () designtools ! org
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On Thu, 28 Jan 2010 17:57:32 +0100 "Bret S. Lambert"
<bret.lambert@gmail.com> wrote:

> On Thu, Jan 28, 2010 at 09:26:04AM -0700, Sean Mackrory wrote:
> > Hi all,
> > I'm interested in OS network stacks, and I'm very interested in
> > OpenBSD, but I'm coming from a Linux background, and I've had a
> > hard time finding resources that cover the way the kernel code is
> > organized. Learning cold from the source code is tricky - so if
> > someone could point me in the right direction I'd appreciate it.
> > In Linux terms, I'm looking for the equivalent of queue_dev_xmit and
> > net_rx. Simply put - they're the 'send' and 'recieve' interface
> > between device drivers and the link layer (although there are
> > lesser-used alternatives). I've found ether_input and ether_output
> > in net/ if_ethersubr.c, and it seems they're called by USB and
> > other device code. Are these the functions I'm looking for? And if
> > so, are there other functions that support other Link Layer
> > protocols? (Not that I'm aware of any common ones) I like thinking
> > of the network stack as a well define top (system calls) and a
> > well-defined bottom (a device agnostic interface, perhaps?) but
> > this bottom is hard to define, and that's what I'm looking for. Of
> > course, if I'm totally missing some significant difference between
> > Linux and BSD, please tell me! I hope I can become a contributing
> > member of the community quickly.
> 
> http://www.openbsd.org/papers/asiabsdcon08-network
> 

http://www.youtube.com/watch?v=V85It0dGUF4&feature=channel

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