Re: [PATCH] cfg80211: implement wext key handling

[Hin-Tak Leung <hintak.leung@gmail.com>]

On Mon, May 11, 2009 at 3:09 PM, Johannes Berg
<johannes@sipsolutions.net> wrote:
> On Mon, 2009-05-11 at 09:50 -0400, Dan Williams wrote:
>
>> I modified the meaning of RESTRICTED/OPEN a few years ago to control=
 the
>> WEP auth mode, for a few reasons... =A0First, some fullmac drivers a=
lready
>> used it to mean WEP auth mode. =A0Second, there was no other mechani=
sm to
>> control WEP auth mode at the time, and there were a lot of Shared Ke=
y
>> installations around. =A0Third, WE-18/WPA was nowhere near being lan=
ded,
>> and it was only supported by one driver (hostap), and it was the onl=
y
>> thing that would plausibly support WEP auth mode via SIWAUTH. =A0Fou=
rth,
>> only hostap and maybe airo really implemented the refuse-non-encoded
>> anyway.
>
> But didn't update the header file ;)
>
>> TBH, SK is nice because it tells you that the WEP key is wrong
>> *immediately*, and the only reason NM doesn't use SK by default (and
>> then fall back to OS) like the original Mac Airport drivers did is t=
hat
>> WEXT simply cannot return reliable association error information.
>
> Hah. Well, we could have that now, but I suspect SK is no longer comm=
on
> enough to put a lot of work into it.
>
>> But in the end, we still need a mechanism with WEXT to be able to se=
t SK
>> auth when associating.
>
> We still have that, with WE18, in IW_AUTH_80211_AUTH_ALG. And mac8021=
1
> never actually supported _setting_ the WEP auth mechanism with
> RESTRICTED/OPEN, only _getting_ that information.
>
> johannes
>
>

Argh, is this the reason why compat-wireless(wireless-testing?) today
doesn't quite work any more?
NetworkManager no longer wants to work, with this message in syslog:

localhost NetworkManager: <WARN>  nm_device_wifi_disable_encryption():
error setting key for device wlan2: Invalid argument

and trying to do it by hand give this error:

#iwconfig wlan2 key restrict <key>
Error for wireless request "Set Encode" (8B2A) :
    SET failed on device wlan2 ; Invalid argument.

This is v2.6.30-rc5-23297-gbf2c6a3 ; the last time I had a working
compat-wireless was only a few days (<5) ago.
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