Re: [ipw3945-devel] chaning mode only when interface down?

On Fri, Aug 03, 2007 at 10:33:07AM -0400, Derek Atkins wrote:
> Johannes Berg <johannes sipsolutions net> writes:
> > On Thu, 2007-08-02 at 14:48 +0200, dragoran wrote:
> >
> >> > Nono, you cannot solve it in the driver. The whole design of mac80211
> >> > mandates that assumption and I think it is a valid one to make.
> >> why? did the old way (allow mode changing while up) caused any problems?
> >
> > Why should it be allowed? Can you come up with a good reason for that
> > since you lose all state anyway when doing mode transitions?
> Um, what state?  Sure you lose your layer 2 state, but why force a
> layer 3 lossage when you don't necessarily have to do so?  For
> example, I've seen plenty of networks that have both 802.11(a) and
> 802.11(b/g) networks that share absolutely everything at layer 3.

I think you are confusing a/b/g "mode" (which is _not_ the topic)
with AP/STA/IBSS/monitor "mode" (which is the topic).

John W. Linville
linville tuxdriver com

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