Re: refactoring ip_output() and the L2 _output()

[David Young <dyoung%pobox.com@localhost>]

On Sun, Feb 10, 2013 at 08:43:31PM -0500, Thor Lancelot Simon wrote:
> On Sun, Feb 10, 2013 at 07:05:01PM -0600, David Young wrote:
> > 
> > Speaking of radix trees, it seems that in an SMP networking stack the PCB
> > tables could be replaced by a couple of them.  The tree for unconnected
> > sockets would use keys
> > 
> >         [protocol (tcp|udp|...), local port (1..65535)]
> > 
> > for sockets binding the same port and INADDR_ANY, and use keys
> > 
> >         [protocol (tcp|udp|...), local port (1..65535)], local address]
> > 
> > for sockets bound to a particular local address.
> 
> Wouldn't this have the unfortunate effect of squandering the ability
> of most modern network adapters to return the appropriate hash bucket
> for your (presumed, but reasonably, on the part of their designers)
> hashed connection datastructures on receive?

That's a good point, it probably would.

Dave

-- 
David Young
dyoung%pobox.com@localhost    Urbana, IL    (217) 721-9981