Re: [ptp] dualing IBSS/managed modes on same system

Erik Walthinsen <[email protected]>
Newsgroups gmane.os.freebsd.devel.mobile
Message-ID <Pine.LNX.4.40L0.0206051219040.31617-100000@alpha.temple-baptist.com>
On Wed, 5 Jun 2002, Jim Binkley wrote:

> I am wondering if Journi's prism2 driver or the BSD version
> could be taught to do that.  This would get us back to the wonderful
> world of mostly theoretical multi-hop ad hoc routing ...

This is the mode I've been dreaming of constructing for quite a while now:

The card would probably be "primarily" IBSS mode, with modifications such
as dropping RTS/CTS and if possible killing the whole stupid packet ACK
thing (one of the worst layer violations I know of).  On top of that it
would send out fake AP beacons and handle association of "dumb" clients
(stock managed mode clients, like Windows machines) a la hostapd.

All the smart nodes in such a network would then use existing and future
layer-2/3 ad-hoc routing protocols, because the layer-1 network is back to
simple hearability, as opposed to tyring to construct a STP-style
pseudo-switched network over a highly variable backhaul (WDS).  All the
dumb ones just see a cluster of APs that will all claim to be the same
ESSID, and therefore presumably will deal easily with a client connecting
to any of them (back to the layer-2/3 routing protocol).

What I don't know is whether such a mode is possible with the firmware on
the prism2 cards.  Can we send and receive 'mangement' packets in IBSS
mode, or some promisc equivalent?

      Erik Walthinsen <[email protected]> - System Administrator
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