[PATCH] add frequency to network block config

Dan Williams dcbw at redhat.com
Tue Sep 12 09:56:10 EDT 2006

On Mon, 2006-09-11 at 20:18 -0700, Jouni Malinen wrote:
> On Mon, Sep 11, 2006 at 08:48:31AM -0400, Dan Williams wrote:
> > On Thu, 2006-09-07 at 10:15 +0200, Henrik Brix Andersen wrote:
> > > Nice addition - but personally I would prefer to be able to specify
> > > the channel number instead of the frequency.
> > 
> > Jouni, do you have any preference?  I guess I'd prefer frequency because
> > channel numbers vary a ton across different standards, while frequency
> > is always unique.  And its quite easy to map channel <-> frequency based
> > on what drivers return from SIOCGIWRANGE (as long as the stupid drivers
> > get it right).
> Well, at least I've implemented this once using channel number, so maybe
> that could be interpreted as a preference. ;-) However, I did not like
> that implementation enough to convince me to merge it into my CVS
> version. One drawback of using channel number is that that number is not
> unique (e.g., channel 8 is valid for both IEEE 802.11g and IEEE
> 802.11a), so some additional configuration is needed (e.g., selection
> between 802.11g, 802.11a, 802.11b).

Sounds fine; any idea when this would be in CVS for 0.5x line?


> Anyway, I'm in the process of merging in some Devicescape code into
> hostapd for configuring the channel and it is indeed using channel
> number and hw_mode=a/g/b. Therefore, it would probably be best to keep
> wpa_supplicant consistent with same style of configuration and just do
> this with channel/hw_mode. Actually, I've already used that in mlme.c,
> i.e., frequency is only used in wpa_supplicant driver interface and
> other parts of the code are likely to end up using <hw_mode,channel> for
> this.

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