[OpenWrt-Devel] Q: mac80211: defailt distance-settings 0 (Felix Fietkau)

Bill Moffitt bmoffitt at ayrstone.com
Tue Oct 7 11:48:22 EDT 2014

>Message: 1
>Date: Tue, 07 Oct 2014 12:35:25 +0200
>From: Felix Fietkau <nbd at openwrt.org>
>To: mailinglist <openwrt-devel at lists.openwrt.org>
>Subject: Re: [OpenWrt-Devel] Q: mac80211: defailt distance-settings 0
>Message-ID: <5433C1ED.5050109 at openwrt.org>
>Content-Type: text/plain; charset=windows-1252
>On 2014-10-07 08:15, Bastian Bittorf wrote:
>> i seems that '/lib/netifd/wireless/mac80211.sh' sets
>> the default distance to '0' if not defined via uci.
>> what does that mean? dynamic ack or not?
>> because 0 seems to be a valid value:
>0 does not imply dynamic ACK, it is simply the minimum value.
>Enabling dynack by default would be a bad idea.
>- Felix


Thanks for the clarification; I was under the same impression as Bastian. Which brings up three follow-up questions:

1. How DO you turn dynack on?
2. When was dynack first added to ath9k and to OpenWRT? (I.e. what's the earliest version of OpenWRT in which it can be used?)
3.) Is 0 the right default for distance? Might 100 or 1000 be better values? 

(I'm using OpenWRT for outdoor WiFi in the U.S. with 600 mw access points, so I may have a slightly warped sense of what's right here...)

In my experience, the default seems to work OK out to over 2 km.
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