The bgscan simple and learn algorithms should run regardless
of wall clock time jumps, so make them use monotonic time.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
bgscan_learn_get_probe_freq() starts from returning the second entry in
the supp_freqs arrays. Change its logic a bit to make it start from the
first entry.
Signed-hostap: Eliad Peller <eliad@wizery.com>
In case the initial signal level of the associated BSS was above the
given threshold, bgscan_learn module would begin using the
short_interval but never switch to the long_interval as there would be
no signal change event. Make the init code poll for the current signal
level and set scan_interval accordingly. This logic exists in
bgscan_simple but was missing in bgscan_learn.
Signed-hostap: Eyal Shapira <eyal@wizery.com>
Some hw modes (e.g., 11b and 11g) contain the same frequencies,
causing the supp_freqs array to be populated with redundant entries.
Check for the existence of the freq before adding it.
Signed-hostap: Eliad Peller <eliad@wizery.com>
In highly congested network (BSSes almost on every channel
within ESS) we have hit a bug when wpa_supplicant become
completly irresponsive, infinite looping on while loop.
When probe_idx was equal 0 and we are not able to probe
new frequency, following condition were never fulfilled:
"if (!in_array(freqs, data->supp_freqs[idx]))"
Signed-hostap: Pawel Kulakowski <pawel.kulakowski@tieto.com>
The hardware feature data is required in several different places
throughout the code. Previously, the data was acquired and freed on
demand, but with this patch wpa_supplicant will keep a single copy
around at runtime for everyone to use.
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
The driver is likely to indicate an immediate signal event when the
threshold value is configured. Since we do this immediately after
association, there is not much point in requesting a new scan to be
started based on this event.
Store list of all discovered BSSes in the ESS and on which frequencies
they have been seen. Use this information to dynamically generated the
list of channels for background scans.
Jouni Malinen
Johannes Berg
Eliad Peller
Eyal Shapira
Pawel Kulakowski
Christian Lamparter
Paul Stewart