On ths subject of Scans: How to set (reset) the Scan timeout?

Dan Williams dcbw at redhat.com
Thu Sep 7 14:34:20 EDT 2006


On Thu, 2006-09-07 at 09:26 -0700, George S. Lockwood wrote:
> Hello,
> 
> How can one continue to get "automatic" scans while connected to an ap?
> 
> At cli-style app startup, I force an enable_network to a non-existant
> ap, just so I can get a scan list built.  This apparently causes a
> scan timeout to be set at 5secs and I get periodic scans.  Great!
> 
> but once I enable a real network and connect, the scan timeout goes to
> 0 and I lose the periodic scans.  After a good connect, I cal status,
> set ap_scan=1, then scan.
> 
> How to set that timeout back to 5 or x seconds and continue to get
> scans while connected?
> 
> here's the log before the connect (and then after -way at the end):

Why not have you cli app trigger periodic scans (with the SCAN command)
and then parse the results when they come back to you?

Dan

> thx
> .
> .
> .
>      45 4e 41 42 4c 45 5f 4e 45 54 57 4f 52 4b 20 30   ENABLE_NETWORK 0
> 1157645925.937500: CTRL_IFACE: ENABLE_NETWORK id=0
> 1157645925.937500: Setting scan request: 0 sec 0 usec
> 1157645925.937500: CTRL: Overlapped write started for 00B88520
> 1157645925.953125: CTRL: Overlapped write completed: dst=00B88520 err=0 bytes=3
> 1157645925.953125: CTRL: Overlapped read started for 00B88520
> 1157645925.953125: State: DISCONNECTED -> SCANNING
> 1157645925.953125: Starting AP scan (specific SSID)
> 1157645925.968750: Scan SSID - hexdump_ascii(len=23):
>      39 44 41 30 42 45 45 44 2d 37 32 34 38 2d 34 35   9DA0BEED-7248-45
>      30 61 2d 42 32 37 43                              0a-B27C
> 1157645926.031250: Trying to get current scan results first without
> requesting a new scan to speed u
> p initial association
> 1157645926.031250: Scan results: 0
> 1157645926.031250: Selecting BSS from priority group 0
> 1157645926.031250: No suitable AP found.
> 1157645926.031250: Setting scan request: 0 sec 0 usec
> 1157645926.046875: Starting AP scan (broadcast SSID)
> 1157645926.046875: NDIS: turning radio on before the first scan
> 1157645926.046875: NDIS: Set OID 0d010102 - hexdump(len=36): [REMOVED]
> 1157645926.062500: NDIS: Set OID 0d01011a - hexdump(len=4): [REMOVED]
> 1157645933.062500: Scan timeout - try to get results
> 1157645933.062500: Scan results: 5
> 1157645933.062500: Selecting BSS from priority group 0
> 1157645933.062500: 0: 00:0d:97:00:48:0f ssid='Feather' wpa_ie_len=0
> rsn_ie_len=0 caps=0x0
> 
> 1157645933.062500:    skip - no WPA/RSN IE
> 1157645933.062500: 1: 00:11:50:26:c6:7c ssid='OPSMBCL1' wpa_ie_len=0
> rsn_ie_len=0 caps=0x10
> 1157645933.062500:    skip - no WPA/RSN IE
> 1157645933.062500: 2: 00:13:10:cd:b1:4c ssid='mango' wpa_ie_len=24
> rsn_ie_len=0 caps=0x10
> 1157645933.062500:    skip - SSID mismatch
> 1157645933.062500: 3: 02:d8:d9:a1:f3:05 ssid='airportthru'
> wpa_ie_len=0 rsn_ie_len=0 caps=0x0
> 1157645933.062500:    skip - no WPA/RSN IE
> 1157645933.062500: 4: 00:14:51:74:ab:87 ssid='FAM AEx Work'
> wpa_ie_len=26 rsn_ie_len=26 caps=0x10
> 1157645933.062500:    skip - SSID mismatch
> 1157645933.062500: No suitable AP found.
> 1157645933.078125: Setting scan request: 5 sec 0 usec
> 1157645938.078125: Starting AP scan (specific SSID)
> 1157645938.078125: Scan SSID - hexdump_ascii(len=23):
>      39 44 41 30 42 45 45 44 2d 37 32 34 38 2d 34 35   9DA0BEED-7248-45
>      30 61 2d 42 32 37 43                              0a-B27C
> 1157645938.078125: NDIS: Set OID 0d01011a - hexdump(len=4): [REMOVED]
> .
> .                           after a good connect, I cal status, set
> ap_scan=1, then scan
> .
> 1157646217.000000: State: GROUP_HANDSHAKE -> COMPLETED
> 1157646217.000000: CTRL-EVENT-CONNECTED - Connection to
> 00:0d:97:00:48:0f completed (auth) [id=0 id_
> str=]
> 1157646217.000000: CTRL_IFACE monitor send 00B850F0
> 1157646217.000000: EAPOL: External notification - portValid=1
> 1157646217.000000: EAPOL: SUPP_PAE entering state AUTHENTICATED
> 1157646217.062500: CTRL: Overlapped read completed: dst=00B88520 err=0 bytes=14
> 1157646217.062500: RX ctrl_iface - hexdump_ascii(len=14):
>      53 54 41 54 55 53 2d 56 45 52 42 4f 53 45         STATUS-VERBOSE
> 1157646217.453125: CTRL: Overlapped write started for 00B88520
> 1157646217.453125: CTRL: Overlapped write completed: dst=00B88520
> err=0 bytes=492
> 1157646217.468750: CTRL: Overlapped read started for 00B88520
> 1157646217.468750: CTRL: Overlapped read completed: dst=00B88520 err=0 bytes=9
> 1157646217.468750: RX ctrl_iface - hexdump_ascii(len=9):
>      41 50 5f 53 43 41 4e 20 31                        AP_SCAN 1
> 1157646217.468750: CTRL: Overlapped write started for 00B88520
> 1157646217.468750: CTRL: Overlapped write completed: dst=00B88520 err=0 bytes=3
> 1157646217.468750: CTRL: Overlapped read started for 00B88520
> 1157646217.468750: CTRL: Overlapped read completed: dst=00B88520 err=0 bytes=4
> 1157646217.468750: RX ctrl_iface - hexdump_ascii(len=4):
>      53 43 41 4e                                       SCAN
> 1157646217.468750: Setting scan request: 0 sec 0 usec
>            <----- !!!
> 1157646217.468750: CTRL: Overlapped write started for 00B88520
> 1157646217.468750: CTRL: Overlapped write completed: dst=00B88520 err=0 bytes=3
> 1157646217.468750: CTRL: Overlapped read started for 00B88520
> 1157646217.468750: Starting AP scan (specific SSID)
> 1157646217.484375: Scan SSID - hexdump_ascii(len=13):
>      46 65 61 74 68 65 72 53 65 63 75 72 65            FeatherSecure
> 1157646217.484375: NDIS: Set OID 0d01011a - hexdump(len=4): [REMOVED]
> 1157646224.484375: Scan timeout - try to get results
> 1157646224.484375: Scan results: 13
> 1157646224.500000: Selecting BSS from priority group 0
> 1157646224.500000: 0: 00:0d:97:00:48:0f ssid='FeatherByEarthLink'
> wpa_ie_len=28 rsn_ie_len=26 caps=0
> x0
> 1157646224.500000:    skip - SSID mismatch
> 1157646224.500000: 1: 00:0d:97:00:48:0f ssid='FeatherSecure'
> wpa_ie_len=28 rsn_ie_len=26 caps=0x10
> 1157646224.500000:    selected based on WPA IE
> 1157646224.500000: Already associated with the selected AP.
> 1157646242.484375: EAPOL: startWhen --> 0
> 1157646243.484375: EAPOL: authWhile --> 0
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