misc/172955: [ath] 11n does not work in adhoc mode

[Johann Hugo]

On Tuesday 23 October 2012 23:29:16 Chuck Burns wrote:
> On 10/23/2012 2:23 PM, Adrian Chadd wrote:
> > I'd really appreciate someone stepping in here. I'm trying to finish
> > off the power save queue handling changes and then move to finishing
> > correcting the ps-poll support. Then I have the whole TX and RX data
> > and control path to jiggle around to make things (more) predictable
> > and better behaved. I really don't want to stray from this. :-)
> > 
> > Do I have to promise free hardware and t-shirts? :-)
> 
> I could be mistaken, but I was under the impression that adhoc only
> supported B or G speeds, and that if you wanted N speeds, you have to
> use STA rather than ADHOC.
> 
> I've heard this discussion outside of relation to FreeBSD, so I know
> it's a well-discussed issue.  I also think I remember reading something
> about certain chipsets supporting 11n in ADHOC mode, but only when
> connecting to other chipsets. I think it was MAYBE an atheros chipset,
> but I don't really remember -exactly- what I read, or where it was...
> 
> Here is a linux ath9k forum post regarding it:
> http://comments.gmane.org/gmane.linux.drivers.ath9k.devel/2660 Seems to
> indicate that 11n in ADHOC isn't supported there either.. Sooo....

Saw this yesterday on another mailing list.

-----------
ad-hoc mode is supported in 802.11n since at least a year with the ath9k 
driver. It might be broken in a specific version of Openwrt trunk, though.
-----------

Johann