> With the old bcm43xx (softmac) driver, iwconfig returns "Operation not > permitted" for "iwconfig <card> channel 14". Kismet's backend process > crashes if I set its channel hopping range to include channel 14. > NetworkManager and iwlist scan doesn't scan on ch14. Channels 12 and > 13 are not affected, only the Japanese channel 14. Channels 1 through > 13 work fine, I can scan, associate, transmit, receive, even monitor > mode works.
To be honest, both bcm43xx and ieee80211softmac have been removed from
the kernel so nobody cares about channel 14 not being available there.
> When mac80211 (or cfg80211 on wireless-testing) is loaded without
> ieee80211_regdom, iwconfig goes up to channel 11, after that,
> "Operation not permitted". Kismet doesn't crash though, it just prints
> an error when it tries to switch to a channel over 11. NetworkManager
> and iwlist scan skips channels 12, 13 and 14. Loading {mac|cfg}80211
> with ieee80211_regdom=64 (which is Japan AFAIK, so it should allow 14
> channels) makes channels 12 and 13 work to some extent, but not
> channel 14.
You have to load cfg80211 with ieee80211_regdom=JP, it's a character
string now, using =64 will just get you US again and even 12 and 13
won't work. I just tried, and channel 14 works flawlessly.
> Iwconfig works up to ch13, while ch14 gives "Operation not permitted".
You get operation not permitted when your configured regdomain doesn't
include the channel you want. I also don't believe you that you get
channels 12 and 13 when loading cfg80211 with ieee80211_regdom=64, that
will get you only channels 1-11.
> Kismet goes into channel 12 and 13 nicely, but crashes on channel 14.
Sounds like a kismet bug.
> The different errors of Kismet suggest a regional lockout on the
> hardware, which is likely specific to this card, and not present on
> non-Asus 4318s. Maybe there is a protection/"cop" chip connected to
> the radio, I don't know as I haven't removed the cover of the radio.
Nope. There is no such thing. You cannot get an -EPERM error from the
b43 driver.
johannes
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