From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oleksij Rempel Date: Thu, 28 Nov 2013 11:33:41 +0100 Subject: [ath9k-devel] unwanted client isolation AR9280 @ 5GHz mode In-Reply-To: <1385596455.40895.YahooMailNeo@web125002.mail.ne1.yahoo.com> References: <1385596455.40895.YahooMailNeo@web125002.mail.ne1.yahoo.com> Message-ID: <52971C05.8020205@rempel-privat.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ath9k-devel@lists.ath9k.org Hi Gertjan, suddenly i do not have HW to test it. My ar7010+ar2080 adapter has blacklisted AP and IBSS modes for all 5GHz channels. If some one else can answer here, it will be great. Am 28.11.2013 00:54, schrieb Gertjan Hofman: > > > Apologies if this should go to the ath mailing list, but we are not sure where in the stack the problem lies. > > On a 3.11 kernel, we are trying to create a AP host using the following hardware: driver (usb) ath9k_htc: Atheros AR9280 Rev:2 using htc_7010.fw firmware (1.3, extracted from debian unstable) After solving some regulatory domain issues by patching the ath driver, we can force the card into becoming master at 5 GHz. However, at 5GHz, the clients are isolated from each other (can not ping etc). When we switch back to 2.4 GHz (making only two changes in the hostapd file, hw_mode=a->g, channel=36->1) the system works as expected. > > > Using wireshark/tcpdump I verified that ARP packets are _not_ transmitted from the AP host to other clients. In other words, ARP from client to AP hosts are resolved ok, but a client trying to resolve the MAC from another client gets no response and the packet is not seen even on a Windows host running wireshark. Switch to 2.4 GHz and the ARP packets return. > > > Looking at mac80211/cfg.c, I see that host isolation is indeed an option. I printed the value of IEEE80211_SDATA_DONT_BRIDGE_PACKETS but it is false as expected. > > > Can anyone tell me whether this is likely a problem at the mac80211 levelor the firmware ? Are there other settings that kick in a 5 GHz that would not at 2.4 GHz ? > > We are quite capable of modifying drivers but have little knowledge of wireless hardware. Any information would be much appreciated. > > > Sincerely, > > Gertjan > > > hostapd (v1.1) settings are: > interface=wlan0 > driver=nl80211 > ssid=MSS-01 > ieee80211n=1 > macaddr_acl=0 > auth_algs=1 > ignore_broadcast_ssid=1 > require_ht=1 > ht_capab=[HT40+][SHORT-GI-40][TXSTBC][RXSTBC123] > wmm_enabled=1 > hw_mode=a > channel=36 > country_code=US > ap_isolate=0 > -- Regards, Oleksij