Hi, I figure I'll give a 30 second introduction into "sectored antenna" support.
So the AR5212 era chips have four antenna control bits. They're ANTA -> ANTD. Now, there's some switch table registers. By default the HAL code sets these up so BB_ANTENNA_CONTROL, BB_SWITCH_TABLE1 and BB_SWITCH_TABLE2 map to "idle", "stuff with antenna 1" and "stuff with antenna 2." This is for non-sectored operation. I can go into more detail here if you'd like. For sectored operation, you don't leave ANTA:ANTD up to the switch table. You control the TX antenna configuration and you use the single "omni" antenna for receiving frames (normal RX, RTS, listening for ACK too I guess.) There's four antenna config bits in the TX descriptor for each rate attempt, along with DEFANT for the omni antenna configuration. In this mode (sector AP mode) its up to the driver and wifi stack to track the per-client, per-sector behaviour and choose an optimal sector configuration for that. The 11n chips have something but not quite similar for this kind of antenna selection. So, if you have a modified NIC that exposes ANTA->ANTD and you can make up a sectored antenna configuration + omni antenna configuration, I can attempt to help you. I haven't done this myself; I'm just going on what I have here. Thanks, Adrian _______________________________________________ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
