[ath9k-devel] Problems with multicast/broadcast

[Tor Krill <tor@excito.com>]

Hi,

I have problems with getting broadcast and multicast of my PowePC based
AP

My setup is Linux 2.6.29.3, Hostapd 0.6.9 and a

phy0: Atheros AR5416 MAC/BB Rev:2 AR2133 RF Rev:81: mem=0xd1180000,
irq=18

card which i currently run "only" in pure g mode. Further more i use
this card in a bridged setup with a wired ethernet device.

In this brigde the eternet device works ok. But on the wlan interface no
broadcast or multicast seems to leave the interface. Clients attached to
the AP seems to work fine. But when i for example try to reach any
client from the ap the ARP does not get through to the client and im
unable to connect to it until i first initiate some traffic from the
client to the AP thus populating the ARP table the other way.

Further more no multicast traffic seems to leave the AP such as fx mdns
traffic. The AP it self on the other hand has no trouble receiving the
same.

Not sure if it gives any clue but running tcpdump on the AP tells me
that the packets are "visible" on both the wlan0 and the br0 interface
but the client does not pick them up, if they are sent.

I thought that the "ath9k: Fix FIF_BCN_PRBRESP_PROMISC handling" in
2.6.29.3 should fix it but when reading
https://bugzilla.redhat.com/show_bug.cgi?id=498502 i get the impression
that this fix is for the problem the other way around, that the driver
was unable to receive multi/broadcast.


Cut down hostapd conf. Left out vme and logging config:

interface=wlan0
bridge=br0
driver=nl80211
ssid=ap-test
country_code=SE
hw_mode=g
channel=6
beacon_int=100
dtim_period=2
max_num_sta=255
rts_threshold=2347
fragm_threshold=2346
macaddr_acl=0
auth_algs=3
ignore_broadcast_ssid=0
ieee80211n=0
eapol_key_index_workaround=0
eap_server=0
own_ip_addr=127.0.0.1
wpa=3
wpa_passphrase=leftout
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP

Anyone have any idea on where to dig further? Or is this a known issue?

Best Regards,

/Tor