Hi John,
On Mon, 13 Feb 2006, John Beck wrote:
http://www.opensolaris.org/os/community/approachability/nwam/architecture/
Feedback is encouraged on approach-discuss. Also, please note the
version and date at the top of the document (their initial values are
0.1 and today) as we will be updating the document on a regular basis
based on both community feedback and our own discussions.
Section 2: damping events.
How long will this timer be and why? What about 'flaps' that occur at
exactly timer+1 each time? Can you describe scenarios where this
dampening would definitely be a good idea? Ie this seems a bit premature
to put in the architecture to me. Why not just go for something more
slightly more simple - detect and 'kill' (for some period of time) fast
bouncing and unstable links?
Section 3: Events and discussion of information needed from kernel is
interesting.
Seems to me a possible direction for future work is to 'generify'
PF_ROUTE into a general kernel->userspace event reporting channel.
Rather than having dozens of different 'channels' (be they various
ioctls() that have to polled, PF_ROUTE, etc.) one extensible kernel
protocol could do this (there's precedent here in a certain other
Unix-like system).
Also, I'm unclear on the role of hald here. Is the idea here that the
more general user-level tools will talk to HAL, and have system
interfaces hook into back of HAL, with the profile daemon as a
'sideband' interface for storing preferences, e.g. something like:
gnome-network-widget---profile daemon
|
|
HAL
/ | \______
/ | \
PF_ROUTE wireless devs monitoring
backend monitoring
Or will the profile daemon and HAL sort of co-exist side-by-side, with
'gnome-network-widget' having to retrieve some system information from
HAL and some other information from profile-daemon (in which case - why
bother with HAL at all)?
A diagramme of what the thinking is on what pieces are needed, and where
they'll fit in would be very useful! :)
regards,
--
Paul Jakma,
Network Approachability, KISS. http://quagga.ireland.sun.com/
Sun Microsystems, Dublin, Ireland. tel: EMEA x19190 / +353 1 819 9190
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