Re: mac80211 user space

["Javier Cardona" <javier@cozybit.com>]

Johannes,

On Sun, Dec 7, 2008 at 5:57 AM, Johannes Berg <johannes@sipsolutions.net> wrote:
> For example, consider this scenario with three mesh points:
>
> MP1 ---- MP2 ---- MP3
>
> where MP1 and MP3 cannot directly communicate because they are too far
> apart, physically. It isn't possible to test such a scenario with hwsim
> because hwsim has no concept of distance.
>
> One easy solution to this would be to introduce "air groups", each just
> a number.
>
> [...]
>
> Does that make sense? Do you think it's flexible enough? Should we maybe
> use a u64 so we have more flexibility? It should be fairly easy to do
> this, I think.
>
>
> Of course, this isn't as general as it could be.

To be useful for our mesh tests this "virtual air" would have to allow
us to create 3 groups, each one a superset of the previous.  The
smallest group would be the set of nodes that can a node communicate
with ("A can talk to B").  The next larger group would be nodes on
which a node that can interfere ("A can screw up C's reception").
Finally, the largest would be nodes that can detect each other ("A can
detect when D is transmitting").

Cheers,

Javier

-- 
Javier Cardona
cozybit Inc.