[Madwifi-devel] Failed to get WPA/RSN information element?

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900

Dear all,

      When I try hostapd +madwifi dirver with wpa-psk, I got the =
follownig problems,
      associated
      New STA
      ioctl[unknown???]: Invalid argument
      Failed to get WPA/RSN information element.

      I have trace some source codes and find the following with node =
debug open ,

Using interface ath0 with hwaddr 00:11:f5:21:0b:41 and ssid 'linux'
madwifi_configure_wpa: group key cipher=3D1
madwifi_configure_wpabr0: port 2(ath0) entering learning state
: pairwise key ciphers=3D0x2

madwifi_configure_wpa: key management algorithms=3D0x2
madwifi_configure_wpa:br0: port 2(ath0) entering forwarding state
 rsn capabilitiebr0: topology change detecteds=3D0x0
madwifi_c, propagatingonfigure_wpa:=20
enable WPA=3D 0x1

madwifi_set_privacy: enabled=3D1
WPA: group state machine entering state GTK_INIT
GMK - hexdump(len=3D32):
 e7 b5 4c db 2a bc 18 e0 f9 9c 82 2a 97 23 cb 77 4e
 df f8 57 93 1c b9 90 31 20 d9 74 da 8c 26 2f
GTK - hexdump(len=3D32):

 ac fb 1b d0 0f 5f 23 85 6c e4 85 63 2c 6d 8c 7a 7c
 3e be f0 72 a4 4d fe da 12 ad 55 39 f1 f3 47
WPA: group state machine entering state SETKEYSDONE
madwifi_set_key: alg=3DTKIP addr=3D00:00:00:00:00:00 key_idx=3D1
Flushing old station entries
Deauthenticate all stations

ieee80211_setup_node 00:10:c6:1c:ce:b2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 3
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 4
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 3
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
 associated
  New STA
ioctl[unknown???]: Invalid argument
Failed to get WPA/RSN information element.
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:30:95:ff:00:3f refcnt 2
ieee80211_free_node 00:30:95:ff:00:3f refcnt 1
_ieee80211_free_node 00:30:95:ff:00:3f
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:30:95:ff:00:3f refcnt 2
ieee80211_free_node 00:30:95:ff:00:3f refcnt 1
_ieee80211_free_node 00:30:95:ff:00:3f
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:30:95:ff:00:3f refcnt 2
ieee80211_free_node 00:30:95:ff:00:3f refcnt 1
_ieee80211_free_node 00:30:95:ff:00:3f
ieee80211_setup_node 00:10:c6:1c:ce:b2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
ieee80211_setup_node 00:10:c6:1c:ce:b2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
ieee80211_setup_node 00:10:c6:1c:ce:b2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
ieee80211_setup_node 00:10:c6:1c:ce:b2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
ieee80211_setup_node 00:10:c6:1c:ce:b2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:30:95:ff:00:3f refcnt 2
ieee80211_free_node 00:30:95:ff:00:3f refcnt 1
_ieee80211_free_node 00:30:95:ff:00:3f
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:30:95:ff:00:3f refcnt 2
ieee80211_free_node 00:30:95:ff:00:3f refcnt 1
_ieee80211_free_node 00:30:95:ff:00:3f
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:30:95:ff:00:3f refcnt 2
ieee80211_free_node 00:30:95:ff:00:3f refcnt 1
_ieee80211_free_node 00:30:95:ff:00:3f
ieee80211_setup_node 00:30:95:ff:00:3f
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 3
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 4
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 3
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 2
ieee80211_free_node 00:10:c6:1c:ce:b2 refcnt 1
_ieee80211_free_node 00:10:c6:1c:ce:b2
 802.11: associated
ioctl[unknown???]: Invalid argument
Failed to get WPA/RSN information element.

    When STA has been associated with the AP, it will start wpa =
authentication, and if ap can't find the specified sta, it will give the =
above the message.=20

    Why can't AP find the specified sta?  Because node reference count =
has been reduced to zero somewhere and it has been released. I trace the =
source code, and I always find ath_tx_processq will release the node. =
However, I can't understand why tx path will release the node. According =
to my understanding, only deauthentiction or station age out will cause =
the node to be released.

    More strangely, different clients have different results. Most =
client wireless cards will work well with madwifi master in the above =
configuraiton. Atheros window clients usually output the above results.

    Could someone please explain me why and how to fix it? Appreciate =
any help and tips.

    Thanks,
    hualab