I have just gotten the mac80211 code for the RTL8192CU devices for integration
into wireless-testing and then to mainline. All seems to be working, but I get a
lot of disassociation./reassociation messages followed by a call to CRDA. The
output from an 'iw event -t -f' command is the following:
1295294459.884470: wlan22 (phy #4): connected to c0:3f:0e:be:2b:45
1295294530.254474: wlan22 (phy #4): unknown event 64
1295294537.006563: wlan22 (phy #4): scan started
1295294538.642236: wlan22 (phy #4): scan finished: 2412 2417 2422 2427 2432 2437
2442 2447 2452 2457 2462 2467 2472, ""
1295294538.738591: wlan22 (phy #4): deauth 00:1f:1f:c8:8e:cb ->
c0:3f:0e:be:2b:45 reason 4: Disassociated due to inactivity [frame: c0 00 00 00
c0 3f 0e be 2b 45 00 1f 1f c8 8e cb c0 3f 0e be 2b 45 00 00 04 00]
1295294538.738858: wlan22 (phy #4): disconnected (local request)
1295294538.779587: phy #0: regulatory domain change: set to world roaming by the
wireless core upon initialization request
1295294538.861421: wlan22 (phy #4): scan started
1295294539.894265: wlan22 (phy #4): scan finished: 2412 2417 2422 2427 2432 2437
2442 2447 2452 2457 2462 2467 2472, "lwfdjf_rad"
1295294539.937094: wlan22 (phy #4): auth c0:3f:0e:be:2b:45 -> 00:1f:1f:c8:8e:cb
status: 0: Successful [frame: b0 00 3a 01 00 1f 1f c8 8e cb c0 3f 0e be 2b 45 c0
3f 0e be 2b 45 a0 52 00 00 02 00 00 00 dd 09 00 10 18 02 02 f0 04 00 00]
1295294539.941963: wlan22: unknown event 19
1295294539.948184: wlan22 (phy #4): assoc c0:3f:0e:be:2b:45 -> 00:1f:1f:c8:8e:cb
status: 0: Successful [frame: 10 00 3a 01 00 1f 1f c8 8e cb c0 3f 0e be 2b 45 c0
3f 0e be 2b 45 b0 52 11 04 00 00 03 c0 01 08 82 84 8b 96 24 30 48 6c 32 04 0c 12
18 60 dd 09 00 10 18 02 02 f0 04 00 00 dd 18 00 50 f2 02 01 01 80 00 03 a4 00 00
27 a4 00 00 42 43 5e 00 62 32 2f 00]
1295294539.948508: wlan22 (phy #4): connected to c0:3f:0e:be:2b:45
1295294637.011546: wlan22 (phy #4): scan started
1295294638.646848: wlan22 (phy #4): scan finished: 2412 2417 2422 2427 2432 2437
2442 2447 2452 2457 2462 2467 2472, ""
1295294638.726666: wlan22 (phy #4): deauth 00:1f:1f:c8:8e:cb ->
c0:3f:0e:be:2b:45 reason 4: Disassociated due to inactivity [frame: c0 00 00 00
c0 3f 0e be 2b 45 00 1f 1f c8 8e cb c0 3f 0e be 2b 45 00 00 04 00]
1295294638.726940: wlan22 (phy #4): disconnected (local request)
1295294638.764810: phy #0: regulatory domain change: set to world roaming by the
wireless core upon initialization request
1295294638.845333: wlan22 (phy #4): scan started
1295294639.862231: wlan22 (phy #4): scan finished: 2412 2417 2422 2427 2432 2437
2442 2447 2452 2457 2462 2467 2472, "lwfdjf_rad"
1295294639.899905: wlan22 (phy #4): auth c0:3f:0e:be:2b:45 -> 00:1f:1f:c8:8e:cb
status: 0: Successful [frame: b0 00 3a 01 00 1f 1f c8 8e cb c0 3f 0e be 2b 45 c0
3f 0e be 2b 45 40 98 00 00 02 00 00 00 dd 09 00 10 18 02 02 f0 04 00 00]
1295294639.902684: wlan22: unknown event 19
1295294639.905854: wlan22 (phy #4): assoc c0:3f:0e:be:2b:45 -> 00:1f:1f:c8:8e:cb
status: 0: Successful [frame: 10 00 3a 01 00 1f 1f c8 8e cb c0 3f 0e be 2b 45 c0
3f 0e be 2b 45 50 98 11 04 00 00 03 c0 01 08 82 84 8b 96 24 30 48 6c 32 04 0c 12
18 60 dd 09 00 10 18 02 02 f0 04 00 00 dd 18 00 50 f2 02 01 01 80 00 03 a4 00 00
27 a4 00 00 42 43 5e 00 62 32 2f 00]
1295294639.906219: wlan22 (phy #4): connected to c0:3f:0e:be:2b:45
The MAC address for the device is 00:1F:1F:C8:8E:CB and that of the AP is
C0:3F:0E:BE:2B:45, thus corresponding with the above output.
Is scanning this often normal? I suspect it is, but I have not looged the events
before.
Although both AP and STA support 802.11n, the connection is 802.11g (max 54
Mbps) using WPA2-PSK.
What triggers the "Disassociated due to inactivity"?
Thanks,
Larry
On 01/17/2011 12:26 PM, Daniel Halperin wrote:
> On Mon, Jan 17, 2011 at 12:18 PM, Larry Finger
> <[email protected]> wrote:
>> The MAC address for the device is 00:1F:1F:C8:8E:CB and that of the AP is
>> C0:3F:0E:BE:2B:45, thus corresponding with the above output.
>>
>> Is scanning this often normal? I suspect it is, but I have not looged the events
>> before.
>>
>> Although both AP and STA support 802.11n, the connection is 802.11g (max 54
>> Mbps) using WPA2-PSK.
>>
>> What triggers the "Disassociated due to inactivity"?
>
> Scanning happens every time you associate/re-associate; disassociation
> due to inactivity happens when your device doesn't send packets to the
> AP for some period of time. It looks like your AP's (or device's)
> timeout is 100s.
From what I can tell, this message can also happen if the local
STA thinks it cannot connect to the remote. For instance, if it
doesn't get a TX callback within 500ms for ath5k/ath9k (and perhaps
others).
Thanks,
Ben
>
> Dan
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Ben Greear <[email protected]>
Candela Technologies Inc http://www.candelatech.com
On 01/17/2011 04:02 PM, Ben Greear wrote:
> On 01/17/2011 12:26 PM, Daniel Halperin wrote:
>> On Mon, Jan 17, 2011 at 12:18 PM, Larry Finger
>>
>> Scanning happens every time you associate/re-associate; disassociation
>> due to inactivity happens when your device doesn't send packets to the
>> AP for some period of time. It looks like your AP's (or device's)
>> timeout is 100s.
>
> From what I can tell, this message can also happen if the local
> STA thinks it cannot connect to the remote. For instance, if it
> doesn't get a TX callback within 500ms for ath5k/ath9k (and perhaps
> others).
Thanks Dan and Ben. It is clearly not an ordinary timeout from inactivity as it
happens even when I'm doing a download. I'll push it back to the Realtek people
to see if they can figure out a cause.
Larry
On Mon, Jan 17, 2011 at 12:18 PM, Larry Finger
<[email protected]> wrote:
> The MAC address for the device is 00:1F:1F:C8:8E:CB and that of the AP is
> C0:3F:0E:BE:2B:45, thus corresponding with the above output.
>
> Is scanning this often normal? I suspect it is, but I have not looged the events
> before.
>
> Although both AP and STA support 802.11n, the connection is 802.11g (max 54
> Mbps) using WPA2-PSK.
>
> What triggers the "Disassociated due to inactivity"?
Scanning happens every time you associate/re-associate; disassociation
due to inactivity happens when your device doesn't send packets to the
AP for some period of time. It looks like your AP's (or device's)
timeout is 100s.
Dan