Jouni, If I don't specify bssid, in most cases wpa_supplicant is not iterating i.e. it keeps trying (and failing) the same bssid over and over: wlan0: Trying to associate with SSID 'Moss' wlan0: CTRL-EVENT-ASSOC-REJECT bssid=be:c3:4f:d7:59:c4 status_code=16 wlan0: Trying to associate with SSID 'Moss' wlan0: CTRL-EVENT-ASSOC-REJECT bssid=be:c3:4f:d7:59:c4 status_code=16 wlan0: Trying to associate with SSID 'Moss' wlan0: CTRL-EVENT-ASSOC-REJECT bssid=be:c3:4f:d7:59:c4 status_code=16 I have a mesh with many bssids: root@DeNovix-S-12345:~# wpa_cli scan_results Selected interface 'wlan0' bssid / frequency / signal level / flags / ssid bc:cf:4f:d7:59:c3 5745 -43 [WPA2-PSK-CCMP][ESS] Moss be:c3:4f:d7:59:c4 5745 -43 [WPA2-PSK-CCMP][ESS] Moss ... If I explicitly specify bssid bc:cf:4f:d7:59:c3, it succeeds every time wlan0: Trying to associate with SSID 'Moss' wlan0: Associated with bc:cf:4f:d7:59:c3 wlan0: CTRL-EVENT-CONNECTED - Connection to bc:cf:4f:d7:59:c3 completed [id=0 id_str=] How can I get wpa_supplicant to iterate over different bssids? Are there parameters I can pass to the nl80211 driver to make it iterate? Will upgrading from wpa_supplicant 2.9 to 2.10 help? root@DeNovix-S-12345:~# wpa_supplicant -v wpa_supplicant v2.9 Copyright (c) 2003-2019, Jouni Malinen <j@xxxxx> and contributors root@DeNovix-S-12345:~# uname -a Linux DeNovix-S-12345 5.10.95-v8 #1 SMP PREEMPT Tue Feb 1 13:12:49 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux On Sun, Dec 3, 2023 at 12:34 AM Jouni Malinen <j@xxxxx> wrote: > > On Thu, Nov 30, 2023 at 10:15:43PM -0800, Chris Cortopassi wrote: > > When scan_results returns multiple rows with the same SSID but > > different BSSIDs, how does wpa_supplicant select which BSSID to connect > > to? > > > > Does it choose the strongest signal level? > > > > Does it iterate through each BSSID until one succeeds? > > > > Is there any way to control this process? > > All that depends on what type of driver is used.. Some drivers take care > of BSS selection internally and wpa_supplicant does not really get > involved with that. Other drivers allow some input from wpa_supplicant > or fully leave this to wpa_supplicant control. > > When wpa_supplicant selects a suitable BSS to connect to, it estimates > possible throughput through each viable option and picks the one with > the highest estimated throughput. This can also be fine-tuned based on > available security level. Failed connection attempts results in > temporary blocking of a BSS and this results in iteration over other > possible options. > > There might be some driver-specific configuration options for some > drivers to control some details of the process. For wpa_supplicant, > there are some configuration parameters like bssid that do have an > impact to this, but most of the changes would likely need source code > modification. > > > -- > Jouni Malinen PGP id EFC895FA _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
