From: =?utf-8?q?Luk=C3=A1=C5=A1_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: Sun, 6 Dec 2009 20:00:26 +0100
Cc: linville@tuxdriver.com, linux-wireless@vger.kernel.org,
	Johannes Berg <johannes@sipsolutions.net>,
	ath5k-devel@lists.ath5k.org
References: <200912061820.26320.8an@praha12.net> <200912061826.52394.8an@praha12.net> <4B1BF952.1000909@openwrt.org>
In-Reply-To: <4B1BF952.1000909@openwrt.org>
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On 6.12.2009 19:34 Felix Fietkau wrote:
> This part is wrong. The slot time can be either short or long, based on
> configuration and PHY type.
I did some test, and the value returned by ath5k_hw_get_slot_time was alway=
s=20
9, even when connected to 802.11b-only AP. I didn't try the turbo mode,=20
though. Unfortunately I don't know how to calculate ACK timeouts for
a different slot time - the formula I used is the only one in both Madwifi'=
s=20
and FreeBSD's athctrl.

Also the calculation of initial slot time is not expained anywhere, there a=
re=20
only some magic values in initvals.c.

Lukas Turek

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