hostapd + freeRadius accounting

Hi,

I've installed hostapd and freeRadius on a FreeBSD
6.2-RELEASE machine.
The NAS-Port attribute that hostapd sends in the RADIUS
packets happens
to always contain a value of 0. Additionally the
Acct-Session-Id attribute
always contains '00000000-00000000'. This happens with the
hostapd 0.4.8 that
is included with the FreeBSD release, as well as with
v0.5.8.

Any ideas?

best regard, Andreas

-- 
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I don't want to end up a corpse before my time because you
were daydreaming.
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On Wed, Jul 04, 2007 at 08:06:13PM +0200, Andreas Wetzel
wrote:

> I've installed hostapd and freeRadius on a FreeBSD
6.2-RELEASE machine.
> The NAS-Port attribute that hostapd sends in the RADIUS
packets happens
> to always contain a value of 0. Additionally the
Acct-Session-Id attribute
> always contains '00000000-00000000'. This happens with
the hostapd 0.4.8 that
> is included with the FreeBSD release, as well as with
v0.5.8.

NAS-Port is set to the Association ID, if one is available.
However, it
is not available when using FreeBSD which takes care of IEEE
802.11
association. If it would be important to get this stored
(though, I
don't really see much value for it at the RADIUS server),
this would
need an addition to FreeBSD net80211 to allow the
association ID to be
read (or to make it automatically reported as part of
association
event).

Lack of proper Acct-Session-Id looks like a bug in the
FreeBSD driver
wrapper code. bsd_new_sta() function should call
accounting_sta_get_id(hapd, sta) in the same way as
driver_madwifi.c is
doing in madwifi_new_sta().

-- 
Jouni Malinen                                            PGP
id EFC895FA
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Jouni Malinen wrote:
> On Wed, Jul 04, 2007 at 08:06:13PM +0200, Andreas
Wetzel wrote:
> 
>> I've installed hostapd and freeRadius on a FreeBSD
6.2-RELEASE machine.
>> The NAS-Port attribute that hostapd sends in the
RADIUS packets happens
>> to always contain a value of 0. Additionally the
Acct-Session-Id attribute
>> always contains '00000000-00000000'. This happens
with the hostapd 0.4.8 that
>> is included with the FreeBSD release, as well as
with v0.5.8.
> 
> NAS-Port is set to the Association ID, if one is
available. However, it
> is not available when using FreeBSD which takes care of
IEEE 802.11
> association.

I guess the association ID would be sta->aid, right? The
weird part is,
when I insert a printf that outputs sta->aid at the time
of association,
I get the following:

1st station associates:

hostapd: ath0: STA 00:19:e0:83:b0:41 IEEE 802.11: associated
(aid=1)

2nd station associates:

hostapd: ath0: STA 00:14:78:7d:51:2c IEEE 802.11: associated
(aid=32001)

NAS-Port, which seems to use sta->aid though is always
0.
Which part am I missing?

 > If it would be important to get this stored (though,
I
 > don't really see much value for it at the RADIUS
server), this would
 > need an addition to FreeBSD net80211 to allow the
association ID to be
 > read (or to make it automatically reported as part of
association
 > event).

freeradius uses a combination of the NAS-IP-Address and the
NAS-Port as
the key to store utmp style entries with the radutmp module.
With NAS-Port
being always zero, each station that signs on, overwrites
the entry of the
last station :-(

> Lack of proper Acct-Session-Id looks like a bug in the
FreeBSD driver
> wrapper code. bsd_new_sta() function should call
> accounting_sta_get_id(hapd, sta) in the same way as
driver_madwifi.c is
> doing in madwifi_new_sta().

I also tried passing an Acct-Session-Id in the Access-Accept
message to
hostapd, but that is ignored by hostapd.

Andreas
-- 
Keep it icy man.
I don't want to end up a corpse before my time because you
were daydreaming.
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