Jouni,
Does hostpad disable 5GHz channels intentionally? For regulation reason?
Thanks,
-yi
-------- Forwarded Message --------
From: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
To: Zhu Yi <yi.zhu@xxxxxxxxx>
Cc: Jouni Malinen <jkmaline@xxxxxxxxx>, linux-wireless@xxxxxxxxxxxxxxx
Subject: Re: hostapd with mac80211 progress
Date: Tue, 04 Mar 2008 11:00:22 +0100
> Well, it (HOSTAPD_CHAN_W_SCAN) was removed somewhere after
> driver_nl80211.c set it. I think it's a hostapd bug. Please take a look
> at the hostapd_get_hw_features() function:
>
>
> if ((feature->mode == HOSTAPD_MODE_IEEE80211G ||
> feature->mode == HOSTAPD_MODE_IEEE80211B) &&
> feature->channels[j].chan >= 1 &&
> feature->channels[j].chan <= 11) {
> power_level = 20;
> feature->channels[j].flag |=
> HOSTAPD_CHAN_W_SCAN;
> } else
> feature->channels[j].flag &=
> ~HOSTAPD_CHAN_W_SCAN;
>
>
> Apparently, A channels all have this flag removed. What does this flag
> stand for? I assume it stands for passive scan, right?
Ah, you're on 5 GHz then? Sorry, I'm not too familiar with hostapd
internals yet. I don't think the flag stands for passive scan, I think
it pretty much used to stand for "channel is usable at all" in the
dscape stack.
johannes
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