"Too many aps breaks wpa_supplicant"

Jim Veneskey jvene
Mon Mar 8 05:23:48 PST 2010

I'd love to give this new development version a try - but have never 
used 'git' before.
Could someone please tell me how to retrieve the latest development 
build via git?
Is not very clear - other than saying that it can be done ;-)
I just need the command line to use with 'git' and I'll hopefully be 

We actually have approximately 800 APs in our testing environment with 
most of them beaconing with their
full complement of 16 BSSIDs each - so we have quite a few ;-)

My target clients will not be able to hear them all (luckily) but they 
will be able to hear a lot...


Jouni Malinen wrote:
> On Fri, Mar 05, 2010 at 06:21:13PM +0200, Jouni Malinen wrote:
>> That should be new enough kernel version to allow nl80211 to be used. I
>> would suggest a test with wpa_supplicant 0.7.1 and -Dnl80211. If that
>> fails, please let me know and we'll figure out how to fix that one way
>> or another to avoid getting stuck with failed scan results fetching.
> Based on a quick test with 2000 APs in scan results, the nl80211 part
> for this seemed to be able to handle the results, but the default BSS
> table limit (200) inside wpa_supplicant will likely end up dropping
> needed information. I made this limit now configurable
> (bss_max_count=<limit>) which should allow wpa_supplicant to be used
> even with huge number of APs in the scan results (assuming you don't
> care about memory use).
> As an optional mechanism, I also added a configuration item for
> filtering scan results to only include the BSSes that have an SSID
> matching with one of the configured networks. This can be enabled with
> filter_ssids=1 in wpa_supplicant.conf.
> Both of these alternatives seemed to be able to complete association
> with -Dnl80211 in a test with 2000 APs. The changes are available in
> the development tree (0.7.x) git repository.
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