PATCH: Operational rates

Dave dave
Fri Apr 11 23:06:00 PDT 2003

Hello all,

I have given this patch a try against hostap CVS and I cannot see a

It is my understanding that this patch would permit setting the operational
rates that an AP announces and I assume would have effect for WDS links

At any rate, I applied the patch and issued the command 'iwpriv wlan0
prism2_param 33 6' on both ends of a WDS link and watched as the rates on
each end continued to fluctuate between 1, 2, 5.5 and 11 as if I hadn't done


the one (the only one?) who still cannot set a fixed rate on WDS links...;)


> On Thu, Apr 10, 2003 at 05:08:39PM +0300, Jussi M?ki wrote:
> > > > This patch adds prism2_param 33 to set tx_rate_control to bitmap
> > > > specified so you can set specific rates, syntax is exactly the same
as in
> > > > basic_rates.
> > >
> > > What would this be used for? 'iwconfig wlan0 rate <val>' is already
> > > implemented and is the standard way of setting that value.
> >
> > True, but the reason i want this is to lock rates to 5.5Mbps and 11Mbps
> > when large number of clients is connected the ap doesnt need to jump
> > and forth between different modulations..
> OK, that seems to be a value that is not supported by iwconfig rate
> command. Since I already added iwpriv param for setting basic rate set,
> I will add your patch for operational TX rate setting as a similar bit
> map. In the future, it might be useful to change these to be normal
> wireless ext ioctls, i.e., new or modified ioctl for setting and getting
> basic and operational rate sets as bit maps of supported rate list
> (iwlist rate).
> Jean, do you have an opinion on this? Setting TX rate to 5.5 + 11, but
> not 1 and 2 Mbps seems reasonable configuration in some environments and
> basic rate set configuration would be useful for Master mode (it is even
> required in Wi-Fi certification of an AP).
> --
> Jouni Malinen                                            PGP id EFC895FA
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