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Re: Multiple-BSSID issues with hostapd

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On 12/04/14 13:03, Rafał Miłecki wrote:
On 28 November 2014 at 10:27, Arend van Spriel<arend@xxxxxxxxxxxx>  wrote:
For the brcmfmac we started working on Multiple-BSSID support and came
across some issues with hostapd that are listed listed below.

BSS1 setup on netdev wlan0
BSS2 setup on netdev wlan0_0

* get_station() done on wrong netdev

observed:
Upon association of STA1 with BSS2 (wlan0_0) a get_station() is done for
STA1 with wlan0 as netdev.
expected:
get_station() for STA1 with wlan0_0 as netdev. We verified that wlan0_0
ifindex was used in NL80211_CMD_NEW_STATION event.

Did you do any progress on this?

Nope.

According to the nl80211.h you are correct of course, every
NL80211_CMD_foo_STATION command should include NL80211_ATTR_IFINDEX.

There are two functions in driver_nl80211.c where
NL80211_CMD_GET_STATION is used.

1) nl80211_get_link_signal
It fills NL80211_ATTR_IFINDEX in the following way:
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);

2) i802_read_sta_data
It fills NL80211_ATTR_IFINDEX in the following way:
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(bss->ifname));

Did you track down which of the above functions in the one sending
wrong NL80211_ATTR_IFINDEX?

Nope. We simply return empty sta_info. We used the hostapd that comes with Ubuntu 12.04 (i think) to assure it is usable. I suppose the code you mention here is driver_nl80211.c from the git repo. I intended to retry the scenario with hostapd build from git.

Regards,
Arend
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