Date: Mon, 18 Jun 2012 20:51:37 -0400 From: Justin Hibbits <chmeeedalf@gmail.com> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-current@freebsd.org, freebsd-wireless@freebsd.org Subject: Re: ath(4) now defaults to 802.11n on GENERIC/i386 and GENERIC/amd64 Message-ID: <20120618205137.344191a0@narn.knownspace> In-Reply-To: <CAJ-Vmok=9RosrDPHveJWA_%2B2Av=%2BOnstHU7W=QmNpmUHiANR9w@mail.gmail.com> References: <CAJ-Vmok=9RosrDPHveJWA_%2B2Av=%2BOnstHU7W=QmNpmUHiANR9w@mail.gmail.com>
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Hi,
On Fri, 15 Jun 2012 01:17:31 -0700
Adrian Chadd <adrian@freebsd.org> wrote:
> Hi,
>
> I've flipped on ATH_ENABLE_11N and the interrupt mitigation in i386
> and amd64 GENERIC.
>
> I'll flip it on on PPC when someone (chmee?) verifies that 802.11n
> works on PPC.
I did my duty as PPC guinea pig, and can happily say that unlike other
cards *cough*bw{i,n},wi*cough* I can actually use ath on my PowerBook.
AR5416, about as stable as I've seen so far. I think you can flip it
on PPC now.
>
> It's still delicate. I still don't know if RTS/CTS HT frame protection
> is working quite right on all chips. But all the basics are there
> (software TX aggregation, RX AMPDU reordering in net80211, BAR
> transmission, software queue pause and unpause, frame retransmission.)
>
> Don't be surprised if your 802.11n mobile devices perform poorly as
> the power queue handling is very broken and will result in all kinds
> of weird traffic stalls if things are too aggressive. I'll look into
> fixing that soon.
>
> If you have problems, please read the wiki article:
> http://wiki.freebsd.org/dev/ath(4) - specifically the bits where I
> tell you to compile with the debugging and diagnostic stuff in your
> -HEAD kernel, including the HAL/driver diagnostic APIs and tools.
>
> Enjoy,
>
>
>
> Adrian
If I can reproduce that crash I mentioned on IRC, I'll post what I can
about it.
- Justin
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