On 12/19/2011 01:14 PM, Simon Wunderlich wrote:
Hello Ben,
On Mon, Dec 19, 2011 at 07:28:52AM -0800, Ben Greear wrote:
On 12/19/2011 06:14 AM, Simon Wunderlich wrote:
Allow to set mcs masks through nl80211. We also allow to set MCS
rates but no legacy rates (and vice versa).
Can you not use the ht-caps logic that went in recently? I was able
to successfully set station MCS rates with it. It only works for
station devices at this point...but AP support could probably be
added without too much trouble.
I have not tried that out yet, but one important side effect we are
using here is to force HT mode, also for No Ack packets which are
usually sent with the lowest (legacy) rate. We are building fixed
links and want to set a fixed HT rate there, and only this rate should
be used whenever possible (and no legacy rates).
The ht-caps patch gives the ability to specify the available MCS rates
(again, for stations only at this point). I didn't try forcing speeds
higher, but I did test that it could force speeds lower. It requires
a patch to hostapd that I've posted, but it has not yet been accepted.
There is no way to disable legacy rates in the current code, as far
as I know.
As far as I understand, the ht caps overrides will only override
HT configurations, but what I want is to also let the rate matcher
consider HT rates too and to disable legacy rates completely.
As the mcs masks support has been prepared a long time ago in iw and
mac80211, it did not seem to be the worst idea to finally fill this
gap and implement it. :)
I haven't read your patch in detail, and at the least, the ht-caps code
would need some additional work to support your needs. So, I'm not
sure whether working on top of the ht-caps logic is useful or not.
Likely Johannes will have more useful feedback when he gets the time.
I will try to read your patch in more detail when I get a chance.
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
