WPA_supplicant trouble connecting client to AP

Wed May 15 08:59:44 EDT 2013

On Wed, 2013-05-15 at 14:01 +0200, Francisco Cuesta wrote:
> Hi Jouni,
> 
> >Which wpa_supplicant are you using?
> 
> I'm currently using wpa_supplicant v2.0-devel
> 
> >What is this fixed_freq parameter? It sounds like this wpa_supplicant
> >version has some changes that do not exist in hostap.git and as such, it
> >is unclear how it behaves.
> 
> This parameters I think represent that the frequency of the AP is
> already fixed. This wpa_supplicant configuration file is parsed from a
> generic wpa_supplicant configuration, this is done in this way in
> OpenWRT; they launches hostapd which parses  this generic file and
> calls wpa_supplicant with it.

His point is that fixed_freq is *not* an option in the official
hostap/wpa_supplicant sources, so whatever you're running, it's been
modified by whoever you got it from.

> >How do you know what it does after this? The -B option on the command
> >line requests wpa_supplicant to move into the background and that stops
> >the debug log to stdout. If you want to see after this, you would need
> >to either direct the log to a file or syslog or remove the -B option.
> 
> I've followed your advice, and I have disabled the -B option and now I
> get more output once I launch wpa_supplicant, which is this one
> 
> wlan1: State: DISCONNECTED -> SCANNING
> Scan SSID - hexdump_ascii(len=18):
>      69 72 74 2d 61 68 2d 69 6e 72 69 61 2d 73 69 65   X-X-X-X
>      62 65                                             -X
> wlan1: Starting AP scan for wildcard SSID
> nl80211: Scan SSID - hexdump_ascii(len=18):
>      69 72 74 2d 61 68 2d 69 6e 72 69 61 2d 73 69 65   X-X-X-X
>      62 65                                             -X
> nl80211: Scan SSID - hexdump_ascii(len=0): [NULL]
> Scan requested (ret=0) - scan timeout 30 seconds
> nl80211: Event message available
> nl80211: Scan trigger
> RTM_NEWLINK: operstate=0 ifi_flags=0x1003 ([UP])
> netlink: Operstate: linkmode=-1, operstate=6
> The num-Xr of sent bytes  in netlink_send_oper_ifla are 37
> RTM_NEWLINK, IFLA_IFNAME: Interface 'wlan1' added
> nl80211: if_removed already cleared - ignore event
> nl80211: Event message available
> nl80211: New scan results available
> wlan1: Event SCAN_RESULTS (3) received
> nl80211: Received scan results (1 BSSes)
> wlan1: BSS: Start scan result update 6
> BSS: last_scan_res_used=1/32 last_scan_full=0
> wlan1: New scan results available
> wlan1: Selecting BSS from priority group 0
> wlan1: 0: 64:70:02:3e:a7:82 ssid='X-X-X-X-X' wpa_ie_len=0 rsn_ie_len=0
> caps=0x1 level=-70
> A BSSID in blacklist is this: 4896660
> The BSSID of blacklist selected is this: 4896660

These messages are also not part of official hostap/wpa_supplicant, so
your version has been patched by somebody, and that may be introducing
new bugs.

> wlan1:    skip - blacklisted (count=1 limit=0)
> wlan1: No APs found - clear blacklist and try again
> Removed BSSID 64:70:02:3e:a7:82 from blacklist (clear)
> wlan1: Selecting BSS from priority group 0
> wlan1: 0: 64:70:02:3e:a7:82 ssid='X-X-X-X-X' wpa_ie_len=0 rsn_ie_len=0
> caps=0x1 level=-70
> wlan1:    allow in non-WPA/WPA2
> The channel that wpa_s struct has got is 36
> The frequency that wpa_s struct has got is 5180 MHz
> The set channel on rate_match function is 2364476
> The set frequency on rate_match function is 5180 MHz
> The set frequency on rate_match function is 5180 MHz
> The comparison freq == bss->freq is true
> wlan1:    selected BSS 64:70:02:3e:a7:82 ssid='X-X-X-X-X'
> wlan1: Request association: reassociate: 0  selected:
> 64:70:02:3e:a7:82  bssid: 00:00:00:00:00:00  pending:
> 00:00:00:00:00:00  wpa_state: SCANNING
> wlan1: Automatic auth_alg selection: 0x1
> wlan1: WPA: clearing AP WPA IE
> wlan1: WPA: clearing AP RSN IE
> wlan1: WPA: clearing own WPA/RSN IE
> wlan1: Cancelling scan request
> wlan1: SME: Trying to authenticate with 64:70:02:3e:a7:82
> (SSID='X-X-X-X-X' freq=5180 MHz)
> wlan1: No keys have -Xen configured - skip key clearing
> wlan1: State: SCANNING -> AUTHENTICATING
> nl80211: Authenticate (ifindex=33)
>   * bssid=64:70:02:3e:a7:82
>   * freq=5180
>   * SSID - hexdump_ascii(len=18):
>      69 72 74 2d 61 68 2d 69 6e 72 69 61 2d 73 69 65   X-X-X-X
>      62 65                                             -X
>   * IEs - hexdump(len=0): [NULL]
>   * Auth Type 0
> nl80211: Authentication request send successfully
> wlan1: Checking for other virtual interfaces sharing same radio (phy1)
> in event_scan_results
> nl80211: Event message available
> nl80211: New station 64:70:02:3e:a7:82
> nl80211: Event message available
> nl80211: Delete station 64:70:02:3e:a7:82
> nl80211: Event message available
> nl80211: MLME event 37; timeout with 64:70:02:3e:a7:82
> wlan1: Event AUTH_TIMED_OUT (14) received
> wlan1: SME: Authentication timed out

This indicates that the kernel driver has not been able to authenticate
with the AP, so the problem may be due to kernel driver issues.  Which
kernel are you using and which wifi driver?

Dan

> Added BSSID 64:70:02:3e:a7:82 into blacklist
> wlan1: Setting scan request: 0 sec 100000 usec
> wlan1: State: AUTHENTICATING -> DISCONNECTED
> wpa_driver_nl80211_set_operstate: operstate 0->0 (DORMANT)
> The linkmode=-1 is set on wpa_driver_nl80211_set_operstate
> netlink: Operstate: linkmode=-1, operstate=5
> The num-Xr of sent bytes  in netlink_send_oper_ifla are 37
> wlan1: State: DISCONNECTED -> SCANNING
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