2015-04-30 15:59:59

by Jean-Pierre TOSONI

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Subject: ath9k: multi-ssid AP does not work on DFS channel

Hello List,

When I set up an AP with two BSSID, it works normally when I use an
ordinary channel (say, chan 48) but not with a DFS channel (e.g. 60,
64...)
It looks like the atk9k driver has a limit of 1 AP interface when using
DFS channels.

Is there any reason for this limit? Why not allowing multi-ssid provided
that all the ssids are shutdown when a radar is detected?

Iw reports:

valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{
P2P-client, P2P-GO } <= 1, #{ IBSS } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match
* #{ WDS } <= 2048,
total <= 2048, #channels <= 1, STA/AP BI must match
* #{ IBSS, AP, mesh point } <= 1,
total <= 1, #channels <= 1, STA/AP BI must match,
radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz }

I am using hostapd v2.3 and compat-wireless 2014-11-04.

Jean-Pierre Tosoni