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From: Ed Maste <emaste@freebsd.org>
Date: Thu, 11 Jun 2015 07:16:12 -0400
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Subject: Re: Those at BSDCan 2015: please test: iwn(4) patch to buffer 5ghz
 frames before transmitting
To: Adrian Chadd <adrian@freebsd.org>
Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>, 
 freebsd-current <freebsd-current@freebsd.org>
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On 8 June 2015 at 11:29, Adrian Chadd <adrian@freebsd.org> wrote:
> Sigh.
>
> This patch:
>
> https://people.freebsd.org/~adrian/net80211/20150524-iwn-delay-xmit-passive-1.diff
>
> along with the latest net80211 tree in -HEAD will buffer frames until
> the first beacon is received after association. It doesn't (yet!)
> purge frames in all the right places, but it should be enough to at
> least get you associated to the 5GHz networks at bsdcan.

I'm running with the patch at BSDCan. Failed to associate several
times at 5Ghz before settling on channel 11 (2462 MHz 11g ht/20). A
log with:

wlandebug +assoc +state +rate
sysctl dev.iwn.0.debug=0x1

can be found at
https://people.freebsd.org/~emaste/logs/wlan-uottawa-5dcaf10a.log. It
includes the failed attempts and the final successful association.