From: =?windows-1252?q?Luk=E1=9A_Turek?= <8an@praha12.net>
Reply-To: 8an@praha12.net
To: Felix Fietkau <nbd@openwrt.org>
Subject: Re: [PATCH 4/4] ath5k: Implement mac80211 callback set_coverage
Date: Thu, 10 Dec 2009 00:51:18 +0100
Cc: linux-wireless@vger.kernel.org,
	Johannes Berg <johannes@sipsolutions.net>,
	ath5k-devel@lists.ath5k.org
References: <200912061820.26320.8an@praha12.net> <200912091412.47689.8an@praha12.net> <4B1FA685.4040605@openwrt.org>
In-Reply-To: <4B1FA685.4040605@openwrt.org>
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On 9.12.2009 14:30 you wrote:
> That's definitely completely inaccurate. Even before you get packet
> loss, as you lower the ACK timeout value, you will first start to get an
> increase in the number of retransmissions.
In fact the ping was "ping -s 1472 -c 1000 -i 0.002", that's more than=20
12Mbit/s pushed into the link. Sorry, I shouldn't call it "ordinary ping".
I didn't say it was perfect, but it couldn't have been completely inaccurat=
e,=20
because I found the athctrl value for 11a mode and Madwifi value for 11g mo=
de=20
that way.

> Yes, the current formula in Madwifi looks correct. We should use that.
OK, I will prepare a revised patch series. However I need to fix the usec t=
o=20
clock conversion in Ath5k before (currently it's correct for 802.11a only).

Lukas Turek

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