Felix, On Thu, Jun 16, 2011 at 7:11 PM, Felix Fietkau <nbd@xxxxxxxxxxx> wrote: > For 802.11n you need proper HT capabilites anyway. I think it usually > doesn't make much sense to use WDS without AP interfaces, but if you > consider it worth adding support for, then please build your patches on top > of my patch series. I've got your patches and I'm seeing a problem with (an admittedly) odd case. I've got 2 APs, both using ath9k cards/drivers. One of them is configured to use WEP, the other has no security. I'm establishing a WDS connection between them. Since WEP is incompatible with HT, that AP's beacons only include a/b/g rates. The open AP happily sends lower rate packets to the WEP AP. However, since beacon from the open AP contains HT rates. In ieee80211_wds_rx_queued_mgmt, the WEP ap calls ieee80211_ht_cap_ie_to_sta_ht_cap, and adds HT rates to the station. "iw wlan0wds0 station dump" reports that the tx bitrate is an HT rate (58.5 MBit/s MCS 6). However, the actual behavior of the radio is horrible. Packets take a long time (frequently well over a second) to be transmitted by the radio. I believe this is an issue with transmitting HT rates while WEP is configured. If I comment out the call to ieee80211_ht_cap_ie_to_sta_ht_cap in ieee80211_wds_rx_queued_mgmt on the WEP AP, I get decent transmit performance (at 54.0 Mbit/s). If I turn off WEP on the AP, I get good transmit performance at HT rates. I believe the call to ieee80211_ht_cap_ie_to_sta_ht_cap in ieee80211_wds_rx_queued_mgmt needs to be conditioned on the radio not being in WEP. But I haven't figured out a convenient way to determine this. -- Bill Jordan -- -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
