2009-01-23 18:58:09

by Antonio Marques

Subject: rt2x00 mesh support

Hi,

I have been trying to setup a mesh network using the 802.11s stack, but
unfortunately the only hardware that I have readily available are rt2x00
usb dongles and an ath5k mini-pci card. Since support for rt2x00
driver is listed on o11s.org as being in development, what is the
current status
of mesh support for this driver?

I see recent commit activity such as
fdc26201323eb8ba543ac5624f8d71e55b6f7352,
"rt2x00: Add mesh support" but I am still unable to establish mesh
links using
rt2x00 devices. An rt2x00 device can see the ath5k device according to
'iw dev mesh station dump', but the link state never changes to ESTAB.

Thanks,
Antonio Marques

2009-01-23 19:02:29

by Andrey Yurovsky

Subject: Re: rt2x00 mesh support

Hi Antonio. As I understand it, beaconing is currently broken in
rt2x00 (it used to work in the past). This means that, until the
device can send beacons again, it won't be able to do mesh (or AP or
IBSS). However the commit in question at least sets up the driver to
support mesh as soon as beaconing works again.

On Fri, Jan 23, 2009 at 10:58 AM, Antonio Marques <[email protected]> wrote:
> Hi,
>
> I have been trying to setup a mesh network using the 802.11s stack, but
> unfortunately the only hardware that I have readily available are rt2x00
> usb dongles and an ath5k mini-pci card. Since support for rt2x00
> driver is listed on o11s.org as being in development, what is the current
> status
> of mesh support for this driver?
>
> I see recent commit activity such as
> fdc26201323eb8ba543ac5624f8d71e55b6f7352,
> "rt2x00: Add mesh support" but I am still unable to establish mesh links
> using
> rt2x00 devices. An rt2x00 device can see the ath5k device according to
> 'iw dev mesh station dump', but the link state never changes to ESTAB.
>
> Thanks,
> Antonio Marques
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>

2009-01-24 11:47:13

by Antonio Marques

Subject: Re: rt2x00 mesh support

Ok. I didn't realize the driver was broken and the issue wasn't specific
to mesh support. I hope the driver maintainers can solve this soon.

Thanks,
Antonio Marques

On Jan 23, 2009, at 19:02 , Andrey Yurovsky wrote:
> Hi Antonio. As I understand it, beaconing is currently broken in
> rt2x00 (it used to work in the past). This means that, until the
> device can send beacons again, it won't be able to do mesh (or AP or
> IBSS). However the commit in question at least sets up the driver to
> support mesh as soon as beaconing works again.
>
> On Fri, Jan 23, 2009 at 10:58 AM, Antonio Marques <[email protected]>
> wrote:
>> Hi,
>>
>> I have been trying to setup a mesh network using the 802.11s stack,
>> but
>> unfortunately the only hardware that I have readily available are
>> rt2x00
>> usb dongles and an ath5k mini-pci card. Since support for rt2x00
>> driver is listed on o11s.org as being in development, what is the
>> current
>> status
>> of mesh support for this driver?
>>
>> I see recent commit activity such as
>> fdc26201323eb8ba543ac5624f8d71e55b6f7352,
>> "rt2x00: Add mesh support" but I am still unable to establish mesh
>> links
>> using
>> rt2x00 devices. An rt2x00 device can see the ath5k device according
>> to
>> 'iw dev mesh station dump', but the link state never changes to
>> ESTAB.
>>
>> Thanks,
>> Antonio Marques
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-
>> wireless" in
>> the body of a message to [email protected]
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>

2009-03-17 21:50:07

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Tuesday 17 March 2009, Johannes Berg wrote:
> On Tue, 2009-03-17 at 15:11 +0100, Johannes Berg wrote:
>
> > > Thanks for the dumps, the reason why the beaconing isn't working
> > > is (fortunately) very obvious from the registers point of view.
> > > The "generate beacons" bit is simply not enabled. However the reason
> > > why this bit has not been set escapes me. Could you apply the attached
> > > patch? This will add extra debug messages to the driver to see when the
> > > beacon generation bit is set.
> >
> > I think mac80211 is probably not requesting it until you scan -- since
> > once you scan it calls ieee80211_if_config internally and changes that
> > bit. Some mesh code needs to call ieee80211_if_config() with the beacon
> > enable change flag.
>
> Actually, it does, in ieee80211_start_mesh(). I have no idea then.

I understood that in normal master mode rt73usb doesn't scan either,
so my bet is that the bug is in rt2x00. :)

Ivo

2009-03-18 12:27:04

by Antonio Marques

Subject: Re: rt2x00 mesh support

On Mar 18, 2009, at 10:02 , Ivo van Doorn wrote:
> On Wednesday 18 March 2009, Johannes Berg wrote:
>> On Wed, 2009-03-18 at 00:01 +0100, Ivo van Doorn wrote:
>>
>>>>> This command means that mac80211 uses the start() callback
>>>>> function. This triggers rt2x00 to initialize
>>>>> the registers which resets the beacon generation.
>>>>
>>>> Strange, that doesn't seem right. If you look at net/mac80211/
>>>> iface.c,
>>>> you'll see it call ->start(), then ->add_interface(), and later
>>>> ieee80211_start_mesh(), which calls _if_config() and sets
>>>> beacon/beacon_enabled.
>>>
>>> ok, I gone through the rt2x00 code a couple of times now to see
>>> how this bug can be triggered by rt2x00,
>>> But the only other scenario I could find, is when the open()
>>> callback for the netdevice structure doesn't end
>>> with a call to the config() callback function. But as far as I see
>>> it that is happening correctly.
>>
>> Maybe log (+dump_stack()) all the relevant calls from mac80211 to the
>> driver? That might give us a better idea of what's going on. Also,
>> Antonio, make sure you're using the very latest code. I for one need
>> sleep now :)
>
> Antonio, could you please use attached patch to add additional
> debugging to rt2x00.
> This will do a dump_stack for all important functions
> (add_interface, remove_interface, config() and config_interface())
>
> It doesn't matter if this patch is on top of the previous patch or
> not.
>
> Thanks,
>
> Ivo
> <debug.diff>

Ok, I have updated to the very latest code (still the same behaviour
though) and
applied the new patch. The rather lengthy list of backtraces is
attached.

Antonio Marques

After interface creation and before running 'iwlist mesh scan':

[ 2486.171848] phy3 -> rt73usb_validate_eeprom: EEPROM recovery - NIC:
0xffef
[ 2486.171851] phy3 -> rt73usb_validate_eeprom: EEPROM recovery - Led:
0xe000
[ 2486.171854] phy3 -> rt73usb_validate_eeprom: EEPROM recovery - RSSI
OFFSET A: 0x0000
[ 2486.172220] phy3 -> rt2x00_set_chip: Info - Chipset detected - rt:
1300, rf: 0002, rev: 0002573a.
[ 2486.172232] cfg80211: Enabling active scanning on frequency: 2472
MHz (Ch 13) on phy3
[ 2486.172234] cfg80211: Enabling beaconing on frequency: 2472 MHz (Ch
13) on phy3
[ 2486.174042] phy3: Selected rate control algorithm 'minstrel'
[ 2486.174726] Registered led device: rt73usb-phy3::radio
[ 2486.174739] Registered led device: rt73usb-phy3::assoc
[ 2486.174752] Registered led device: rt73usb-phy3::quality
[ 2486.175422] usbcore: registered new interface driver rt73usb
[ 2495.307749] phy3 -> rt2x00lib_request_firmware: Info - Loading
firmware file 'rt73.bin'.
[ 2495.307755] rt73usb 1-5:1.0: firmware: requesting rt73.bin
[ 2495.312370] phy3 -> rt2x00lib_request_firmware: Info - Firmware
detected - version: 1.7.
[ 2495.333900] phy3 -> rt2x00mac_add_interface: Error - ===>
[ 2495.398572] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
[ 2495.398574] Call Trace:
[ 2495.398583] [<c038ae85>] ? printk+0x18/0x1b
[ 2495.398592] [<fa513388>] rt2x00mac_add_interface+0x58/0x200
[rt2x00lib]
[ 2495.398624] [<f7f82f87>] ieee80211_open+0x2c7/0x8e0 [mac80211]
[ 2495.398631] [<c030eb62>] dev_open+0x82/0xf0
[ 2495.398634] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
[ 2495.398637] [<c030e479>] dev_change_flags+0x139/0x1d0
[ 2495.398641] [<c0353b02>] devinet_ioctl+0x542/0x600
[ 2495.398644] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2495.398647] [<c0354dca>] inet_ioctl+0x9a/0xc0
[ 2495.398651] [<c02ffee3>] sock_ioctl+0x63/0x260
[ 2495.398653] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2495.398658] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2495.398660] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2495.398664] [<c01c13f0>] ? alloc_fd+0xe0/0x100
[ 2495.398666] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2495.398670] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2495.398673] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2495.398676] [<c01adfaf>] ? fput+0x1f/0x30
[ 2495.398679] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2495.398682] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2495.400364] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
0x000d0000, READ: 0x000d0000
[ 2495.503881] phy3 -> rt2x00mac_add_interface: Error - <===
[ 2495.568516] phy3 -> rt2x00mac_config_interface: Error - ===>
[ 2495.636217] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
[ 2495.636219] Call Trace:
[ 2495.636222] [<c038ae85>] ? printk+0x18/0x1b
[ 2495.636228] [<fa513579>] rt2x00mac_config_interface+0x49/0x130
[rt2x00lib]
[ 2495.636241] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
[rt2x00lib]
[ 2495.636252] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
[ 2495.636268] [<f7f9398a>] ieee80211_start_mesh+0x2a/0x30 [mac80211]
[ 2495.636279] [<f7f83489>] ieee80211_open+0x7c9/0x8e0 [mac80211]
[ 2495.636284] [<c030eb62>] dev_open+0x82/0xf0
[ 2495.636286] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
[ 2495.636290] [<c030e479>] dev_change_flags+0x139/0x1d0
[ 2495.636292] [<c0353b02>] devinet_ioctl+0x542/0x600
[ 2495.636295] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2495.636298] [<c0354dca>] inet_ioctl+0x9a/0xc0
[ 2495.636301] [<c02ffee3>] sock_ioctl+0x63/0x260
[ 2495.636304] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2495.636307] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2495.636310] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2495.636312] [<c01c13f0>] ? alloc_fd+0xe0/0x100
[ 2495.636315] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2495.636318] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2495.636320] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2495.636323] [<c01adfaf>] ? fput+0x1f/0x30
[ 2495.636326] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2495.636329] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2495.638657] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
0x000d0000, READ: 0x000d0000
[ 2495.742550] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE:
0x00040000, READ: 0x00040000
[ 2495.848942] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE:
0x001d0000, READ: 0x001d0000
[ 2495.954156] phy3 -> rt2x00mac_config_interface: Error - <===
[ 2496.021865] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
[ 2496.021867] Call Trace:
[ 2496.021870] [<c038ae85>] ? printk+0x18/0x1b
[ 2496.021876] [<fa51362d>] rt2x00mac_config_interface+0xfd/0x130
[rt2x00lib]
[ 2496.021889] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
[rt2x00lib]
[ 2496.021900] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
[ 2496.021914] [<f7f9398a>] ieee80211_start_mesh+0x2a/0x30 [mac80211]
[ 2496.021925] [<f7f83489>] ieee80211_open+0x7c9/0x8e0 [mac80211]
[ 2496.021931] [<c030eb62>] dev_open+0x82/0xf0
[ 2496.021933] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
[ 2496.021937] [<c030e479>] dev_change_flags+0x139/0x1d0
[ 2496.021940] [<c0353b02>] devinet_ioctl+0x542/0x600
[ 2496.021943] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2496.021946] [<c0354dca>] inet_ioctl+0x9a/0xc0
[ 2496.021948] [<c02ffee3>] sock_ioctl+0x63/0x260
[ 2496.021951] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2496.021954] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2496.021957] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2496.021960] [<c01c13f0>] ? alloc_fd+0xe0/0x100
[ 2496.021962] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2496.021965] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2496.021968] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2496.021971] [<c01adfaf>] ? fput+0x1f/0x30
[ 2496.021974] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2496.021976] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2496.022818] phy3 -> rt2x00mac_config: Error - ===>
[ 2496.080208] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
[ 2496.080209] Call Trace:
[ 2496.080213] [<c038ae85>] ? printk+0x18/0x1b
[ 2496.080219] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2496.080235] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2496.080246] [<f7f8330f>] ieee80211_open+0x64f/0x8e0 [mac80211]
[ 2496.080252] [<c030eb62>] dev_open+0x82/0xf0
[ 2496.080255] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
[ 2496.080258] [<c030e479>] dev_change_flags+0x139/0x1d0
[ 2496.080261] [<c0353b02>] devinet_ioctl+0x542/0x600
[ 2496.080263] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2496.080267] [<c0354dca>] inet_ioctl+0x9a/0xc0
[ 2496.080269] [<c02ffee3>] sock_ioctl+0x63/0x260
[ 2496.080272] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2496.080275] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2496.080278] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2496.080280] [<c01c13f0>] ? alloc_fd+0xe0/0x100
[ 2496.080283] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2496.080286] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2496.080289] [<c01aad27>] ? do_sys_open+0xd7/0x100
[ 2496.080291] [<c01adfaf>] ? fput+0x1f/0x30
[ 2496.080294] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2496.080297] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2496.085232] phy3 -> rt73usb_init_registers: Error - TXRX_CSR9
WRITE: 0x00000000, READ: 0x00000000
[ 2496.223630] phy3 -> rt73usb_config_duration: Error - TXRX_CSR9
WRITE: 0x00000640, READ: 0x00000640
[ 2496.342899] phy3 -> rt2x00mac_config: Error - <===
[ 2496.400228] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 0
- CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[ 2496.402285] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 1
- CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[ 2496.404285] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 2
- CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[ 2496.406280] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 3
- CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[ 2496.409318] phy3 -> rt2x00mac_config: Error - ===>
[ 2496.466744] Pid: 5066, comm: iwconfig Not tainted 2.6.29-rc8-wl #1
[ 2496.466746] Call Trace:
[ 2496.466755] [<c038ae85>] ? printk+0x18/0x1b
[ 2496.466765] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2496.466789] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2496.466819] [<f7f8e874>] ieee80211_set_freq+0x84/0x90 [mac80211]
[ 2496.466829] [<f7f77c5e>] ieee80211_ioctl_siwfreq+0x8e/0x130
[mac80211]
[ 2496.466834] [<c037660b>] ioctl_standard_call+0x5b/0x380
[ 2496.466838] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
[ 2496.466842] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
[ 2496.466844] [<c037624f>] wext_handle_ioctl+0x14f/0x230
[ 2496.466854] [<f7f77bd0>] ? ieee80211_ioctl_siwfreq+0x0/0x130
[mac80211]
[ 2496.466858] [<c03101eb>] dev_ioctl+0x46b/0x530
[ 2496.466861] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2496.466864] [<c023cdfa>] ? smack_sk_alloc_security+0x2a/0x70
[ 2496.466868] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2496.466871] [<c02fff6d>] sock_ioctl+0xed/0x260
[ 2496.466874] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2496.466876] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2496.466881] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2496.466884] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2496.466886] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2496.466890] [<c01aaaa4>] ? fd_install+0x44/0x60
[ 2496.466893] [<c0300843>] ? sock_map_fd+0x43/0x70
[ 2496.466896] [<c010ad05>] ? init_fpu+0x165/0x1a0
[ 2496.466899] [<c01049c0>] ? do_device_not_available+0x0/0x60
[ 2496.466902] [<c010ad05>] ? init_fpu+0x165/0x1a0
[ 2496.466905] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2496.466907] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2496.477792] phy3 -> rt2x00mac_config: Error - <===

After running 'iwlist mesh scan':

[ 2590.349147] phy3 -> rt2x00mac_config_interface: Error - ===>
[ 2590.416899] Pid: 5069, comm: iwlist Not tainted 2.6.29-rc8-wl #1
[ 2590.416902] Call Trace:
[ 2590.416911] [<c038ae85>] ? printk+0x18/0x1b
[ 2590.416923] [<fa513579>] rt2x00mac_config_interface+0x49/0x130
[rt2x00lib]
[ 2590.416941] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
[rt2x00lib]
[ 2590.416958] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
[ 2590.416972] [<f7f7b484>] ieee80211_start_scan+0x204/0x270 [mac80211]
[ 2590.416982] [<f7f7b55f>] ieee80211_request_scan+0x6f/0xb0 [mac80211]
[ 2590.416993] [<f7f84d28>] ieee80211_scan+0x38/0x50 [mac80211]
[ 2590.417004] [<f7c831bf>] cfg80211_wext_siwscan+0x17f/0x200
[cfg80211]
[ 2590.417009] [<c0376749>] ioctl_standard_call+0x199/0x380
[ 2590.417014] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
[ 2590.417017] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
[ 2590.417020] [<c037624f>] wext_handle_ioctl+0x14f/0x230
[ 2590.417027] [<f7c83040>] ? cfg80211_wext_siwscan+0x0/0x200
[cfg80211]
[ 2590.417030] [<c03101eb>] dev_ioctl+0x46b/0x530
[ 2590.417034] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2590.417037] [<c023cdfa>] ? smack_sk_alloc_security+0x2a/0x70
[ 2590.417041] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2590.417044] [<c02fff6d>] sock_ioctl+0xed/0x260
[ 2590.417047] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2590.417050] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2590.417054] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2590.417057] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2590.417059] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2590.417063] [<c01aaaa4>] ? fd_install+0x44/0x60
[ 2590.417066] [<c0300843>] ? sock_map_fd+0x43/0x70
[ 2590.417069] [<c0301084>] ? sys_socket+0x54/0x70
[ 2590.417072] [<c0302135>] ? sys_socketcall+0x265/0x270
[ 2590.417075] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2590.417078] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2590.419861] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
0x000d0640, READ: 0x000d0640
[ 2590.523014] phy3 -> rt2x00mac_config_interface: Error - <===
[ 2590.590777] Pid: 5069, comm: iwlist Not tainted 2.6.29-rc8-wl #1
[ 2590.590779] Call Trace:
[ 2590.590782] [<c038ae85>] ? printk+0x18/0x1b
[ 2590.590789] [<fa51362d>] rt2x00mac_config_interface+0xfd/0x130
[rt2x00lib]
[ 2590.590803] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
[rt2x00lib]
[ 2590.590814] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
[ 2590.590826] [<f7f7b484>] ieee80211_start_scan+0x204/0x270 [mac80211]
[ 2590.590837] [<f7f7b55f>] ieee80211_request_scan+0x6f/0xb0 [mac80211]
[ 2590.590848] [<f7f84d28>] ieee80211_scan+0x38/0x50 [mac80211]
[ 2590.590857] [<f7c831bf>] cfg80211_wext_siwscan+0x17f/0x200
[cfg80211]
[ 2590.590860] [<c0376749>] ioctl_standard_call+0x199/0x380
[ 2590.590864] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
[ 2590.590867] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
[ 2590.590870] [<c037624f>] wext_handle_ioctl+0x14f/0x230
[ 2590.590876] [<f7c83040>] ? cfg80211_wext_siwscan+0x0/0x200
[cfg80211]
[ 2590.590880] [<c03101eb>] dev_ioctl+0x46b/0x530
[ 2590.590883] [<c011c29f>] ? do_page_fault+0x2ef/0x800
[ 2590.590886] [<c023cdfa>] ? smack_sk_alloc_security+0x2a/0x70
[ 2590.590889] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2590.590891] [<c02fff6d>] sock_ioctl+0xed/0x260
[ 2590.590894] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2590.590897] [<c02ffe80>] ? sock_ioctl+0x0/0x260
[ 2590.590900] [<c01b9358>] vfs_ioctl+0x28/0x90
[ 2590.590903] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
[ 2590.590905] [<c038d7a8>] ? _spin_lock+0x8/0x10
[ 2590.590908] [<c01aaaa4>] ? fd_install+0x44/0x60
[ 2590.590911] [<c0300843>] ? sock_map_fd+0x43/0x70
[ 2590.590914] [<c0301084>] ? sys_socket+0x54/0x70
[ 2590.590917] [<c0302135>] ? sys_socketcall+0x265/0x270
[ 2590.590920] [<c01b9e13>] sys_ioctl+0x63/0x70
[ 2590.590922] [<c010366f>] sysenter_do_call+0x12/0x33
[ 2590.616015] phy3 -> rt2x00mac_config: Error - ===>
[ 2590.673353] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2590.673354] Call Trace:
[ 2590.673358] [<c038ae85>] ? printk+0x18/0x1b
[ 2590.673364] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2590.673383] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2590.673392] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2590.673403] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2590.673413] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2590.673417] [<c014458d>] run_workqueue+0x8d/0x150
[ 2590.673421] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2590.673423] [<c01446d8>] worker_thread+0x88/0xf0
[ 2590.673426] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2590.673429] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2590.673432] [<c0147f7c>] kthread+0x3c/0x70
[ 2590.673435] [<c0147f40>] ? kthread+0x0/0x70
[ 2590.673438] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2590.683658] phy3 -> rt2x00mac_config: Error - <===
[ 2590.796012] phy3 -> rt2x00mac_config: Error - ===>
[ 2590.853381] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2590.853382] Call Trace:
[ 2590.853386] [<c038ae85>] ? printk+0x18/0x1b
[ 2590.853392] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2590.853411] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2590.853421] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2590.853431] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2590.853441] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2590.853444] [<c014458d>] run_workqueue+0x8d/0x150
[ 2590.853448] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2590.853450] [<c01446d8>] worker_thread+0x88/0xf0
[ 2590.853453] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2590.853456] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2590.853459] [<c0147f7c>] kthread+0x3c/0x70
[ 2590.853461] [<c0147f40>] ? kthread+0x0/0x70
[ 2590.853464] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2590.863813] phy3 -> rt2x00mac_config: Error - <===
[ 2590.976011] phy3 -> rt2x00mac_config: Error - ===>
[ 2591.033409] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2591.033411] Call Trace:
[ 2591.033415] [<c038ae85>] ? printk+0x18/0x1b
[ 2591.033421] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2591.033448] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.033458] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2591.033468] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2591.033479] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.033482] [<c014458d>] run_workqueue+0x8d/0x150
[ 2591.033486] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2591.033488] [<c01446d8>] worker_thread+0x88/0xf0
[ 2591.033491] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2591.033494] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2591.033497] [<c0147f7c>] kthread+0x3c/0x70
[ 2591.033500] [<c0147f40>] ? kthread+0x0/0x70
[ 2591.033503] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2591.043842] phy3 -> rt2x00mac_config: Error - <===
[ 2591.156012] phy3 -> rt2x00mac_config: Error - ===>
[ 2591.213336] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2591.213338] Call Trace:
[ 2591.213341] [<c038ae85>] ? printk+0x18/0x1b
[ 2591.213347] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2591.213366] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.213376] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2591.213386] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2591.213397] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.213400] [<c014458d>] run_workqueue+0x8d/0x150
[ 2591.213403] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2591.213406] [<c01446d8>] worker_thread+0x88/0xf0
[ 2591.213409] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2591.213412] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2591.213415] [<c0147f7c>] kthread+0x3c/0x70
[ 2591.213417] [<c0147f40>] ? kthread+0x0/0x70
[ 2591.213420] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2591.223748] phy3 -> rt2x00mac_config: Error - <===
[ 2591.336011] phy3 -> rt2x00mac_config: Error - ===>
[ 2591.393365] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2591.393366] Call Trace:
[ 2591.393369] [<c038ae85>] ? printk+0x18/0x1b
[ 2591.393376] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2591.393394] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.393403] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2591.393414] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2591.393424] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.393427] [<c014458d>] run_workqueue+0x8d/0x150
[ 2591.393430] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2591.393433] [<c01446d8>] worker_thread+0x88/0xf0
[ 2591.393436] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2591.393439] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2591.393442] [<c0147f7c>] kthread+0x3c/0x70
[ 2591.393444] [<c0147f40>] ? kthread+0x0/0x70
[ 2591.393447] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2591.403653] phy3 -> rt2x00mac_config: Error - <===
[ 2591.516012] phy3 -> rt2x00mac_config: Error - ===>
[ 2591.573395] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2591.573397] Call Trace:
[ 2591.573400] [<c038ae85>] ? printk+0x18/0x1b
[ 2591.573406] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2591.573424] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.573434] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2591.573445] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2591.573455] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.573458] [<c014458d>] run_workqueue+0x8d/0x150
[ 2591.573462] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2591.573464] [<c01446d8>] worker_thread+0x88/0xf0
[ 2591.573468] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2591.573470] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2591.573473] [<c0147f7c>] kthread+0x3c/0x70
[ 2591.573476] [<c0147f40>] ? kthread+0x0/0x70
[ 2591.573479] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2591.583808] phy3 -> rt2x00mac_config: Error - <===
[ 2591.696012] phy3 -> rt2x00mac_config: Error - ===>
[ 2591.753322] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2591.753324] Call Trace:
[ 2591.753327] [<c038ae85>] ? printk+0x18/0x1b
[ 2591.753333] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2591.753351] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.753361] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2591.753371] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2591.753381] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.753384] [<c014458d>] run_workqueue+0x8d/0x150
[ 2591.753388] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2591.753390] [<c01446d8>] worker_thread+0x88/0xf0
[ 2591.753393] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2591.753396] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2591.753398] [<c0147f7c>] kthread+0x3c/0x70
[ 2591.753401] [<c0147f40>] ? kthread+0x0/0x70
[ 2591.753404] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2591.763711] phy3 -> rt2x00mac_config: Error - <===
[ 2591.876011] phy3 -> rt2x00mac_config: Error - ===>
[ 2591.933351] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2591.933353] Call Trace:
[ 2591.933356] [<c038ae85>] ? printk+0x18/0x1b
[ 2591.933362] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2591.933380] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.933390] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2591.933401] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2591.933411] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2591.933414] [<c014458d>] run_workqueue+0x8d/0x150
[ 2591.933417] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2591.933420] [<c01446d8>] worker_thread+0x88/0xf0
[ 2591.933423] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2591.933426] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2591.933429] [<c0147f7c>] kthread+0x3c/0x70
[ 2591.933432] [<c0147f40>] ? kthread+0x0/0x70
[ 2591.933434] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2591.943741] phy3 -> rt2x00mac_config: Error - <===
[ 2592.056011] phy3 -> rt2x00mac_config: Error - ===>
[ 2592.113388] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2592.113389] Call Trace:
[ 2592.113392] [<c038ae85>] ? printk+0x18/0x1b
[ 2592.113399] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2592.113417] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.113427] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2592.113437] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2592.113447] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.113450] [<c014458d>] run_workqueue+0x8d/0x150
[ 2592.113454] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2592.113456] [<c01446d8>] worker_thread+0x88/0xf0
[ 2592.113460] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2592.113462] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2592.113465] [<c0147f7c>] kthread+0x3c/0x70
[ 2592.113468] [<c0147f40>] ? kthread+0x0/0x70
[ 2592.113471] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2592.123771] phy3 -> rt2x00mac_config: Error - <===
[ 2592.236011] phy3 -> rt2x00mac_config: Error - ===>
[ 2592.293307] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2592.293308] Call Trace:
[ 2592.293312] [<c038ae85>] ? printk+0x18/0x1b
[ 2592.293318] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2592.293336] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.293346] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2592.293356] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2592.293367] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.293370] [<c014458d>] run_workqueue+0x8d/0x150
[ 2592.293373] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2592.293376] [<c01446d8>] worker_thread+0x88/0xf0
[ 2592.293379] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2592.293382] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2592.293385] [<c0147f7c>] kthread+0x3c/0x70
[ 2592.293387] [<c0147f40>] ? kthread+0x0/0x70
[ 2592.293390] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2592.303677] phy3 -> rt2x00mac_config: Error - <===
[ 2592.416011] phy3 -> rt2x00mac_config: Error - ===>
[ 2592.473336] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2592.473337] Call Trace:
[ 2592.473341] [<c038ae85>] ? printk+0x18/0x1b
[ 2592.473347] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2592.473365] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.473374] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2592.473385] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2592.473395] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.473398] [<c014458d>] run_workqueue+0x8d/0x150
[ 2592.473402] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2592.473404] [<c01446d8>] worker_thread+0x88/0xf0
[ 2592.473408] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2592.473410] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2592.473413] [<c0147f7c>] kthread+0x3c/0x70
[ 2592.473416] [<c0147f40>] ? kthread+0x0/0x70
[ 2592.473419] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2592.483707] phy3 -> rt2x00mac_config: Error - <===
[ 2592.596011] phy3 -> rt2x00mac_config: Error - ===>
[ 2592.653367] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2592.653369] Call Trace:
[ 2592.653372] [<c038ae85>] ? printk+0x18/0x1b
[ 2592.653378] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2592.653397] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.653406] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2592.653417] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2592.653427] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2592.653430] [<c014458d>] run_workqueue+0x8d/0x150
[ 2592.653433] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2592.653436] [<c01446d8>] worker_thread+0x88/0xf0
[ 2592.653439] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2592.653442] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2592.653445] [<c0147f7c>] kthread+0x3c/0x70
[ 2592.653448] [<c0147f40>] ? kthread+0x0/0x70
[ 2592.653450] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2592.663736] phy3 -> rt2x00mac_config: Error - <===
[ 2592.948010] phy3 -> rt2x00mac_config: Error - ===>
[ 2593.005414] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2593.005416] Call Trace:
[ 2593.005419] [<c038ae85>] ? printk+0x18/0x1b
[ 2593.005425] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2593.005448] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.005458] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2593.005468] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2593.005478] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.005481] [<c014458d>] run_workqueue+0x8d/0x150
[ 2593.005484] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2593.005487] [<c01446d8>] worker_thread+0x88/0xf0
[ 2593.005490] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2593.005493] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2593.005496] [<c0147f7c>] kthread+0x3c/0x70
[ 2593.005498] [<c0147f40>] ? kthread+0x0/0x70
[ 2593.005501] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2593.015795] phy3 -> rt2x00mac_config: Error - <===
[ 2593.128011] phy3 -> rt2x00mac_config: Error - ===>
[ 2593.185344] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2593.185346] Call Trace:
[ 2593.185349] [<c038ae85>] ? printk+0x18/0x1b
[ 2593.185355] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2593.185374] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.185383] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2593.185393] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
[ 2593.185404] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.185407] [<c014458d>] run_workqueue+0x8d/0x150
[ 2593.185410] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2593.185413] [<c01446d8>] worker_thread+0x88/0xf0
[ 2593.185416] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2593.185419] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2593.185421] [<c0147f7c>] kthread+0x3c/0x70
[ 2593.185424] [<c0147f40>] ? kthread+0x0/0x70
[ 2593.185427] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2593.195699] phy3 -> rt2x00mac_config: Error - <===
[ 2593.480022] phy3 -> rt2x00mac_config: Error - ===>
[ 2593.537396] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2593.537397] Call Trace:
[ 2593.537402] [<c038ae85>] ? printk+0x18/0x1b
[ 2593.537408] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
[ 2593.537428] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.537438] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
[ 2593.537449] [<f7f7b6b7>] ieee80211_scan_completed+0xb7/0x3a0
[mac80211]
[ 2593.537452] [<c038b3ce>] ? schedule+0x3de/0xa20
[ 2593.537462] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.537473] [<f7f7baf9>] ieee80211_scan_work+0x159/0x190 [mac80211]
[ 2593.537483] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.537486] [<c014458d>] run_workqueue+0x8d/0x150
[ 2593.537490] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2593.537492] [<c01446d8>] worker_thread+0x88/0xf0
[ 2593.537495] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2593.537498] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2593.537501] [<c0147f7c>] kthread+0x3c/0x70
[ 2593.537504] [<c0147f40>] ? kthread+0x0/0x70
[ 2593.537506] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2593.547882] phy3 -> rt2x00mac_config: Error - <===
[ 2593.606302] phy3 -> rt2x00mac_config_interface: Error - ===>
[ 2593.674076] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2593.674078] Call Trace:
[ 2593.674085] [<c038ae85>] ? printk+0x18/0x1b
[ 2593.674094] [<fa513579>] rt2x00mac_config_interface+0x49/0x130
[rt2x00lib]
[ 2593.674111] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
[rt2x00lib]
[ 2593.674126] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
[ 2593.674139] [<f7f7b90c>] ieee80211_scan_completed+0x30c/0x3a0
[mac80211]
[ 2593.674150] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.674160] [<f7f7baf9>] ieee80211_scan_work+0x159/0x190 [mac80211]
[ 2593.674171] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2593.674175] [<c014458d>] run_workqueue+0x8d/0x150
[ 2593.674179] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2593.674182] [<c01446d8>] worker_thread+0x88/0xf0
[ 2593.674185] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2593.674188] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2593.674190] [<c0147f7c>] kthread+0x3c/0x70
[ 2593.674193] [<c0147f40>] ? kthread+0x0/0x70
[ 2593.674196] [<c0103f27>] kernel_thread_helper+0x7/0x10
[ 2593.675901] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
0x000d0640, READ: 0x000d0640
[ 2593.779792] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE:
0x00040640, READ: 0x00040640
[ 2593.886185] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE:
0x001d0640, READ: 0x001d0640
[ 2593.991374] phy3 -> rt2x00mac_config_interface: Error - <===
[ 2594.059083] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
[ 2594.059085] Call Trace:
[ 2594.059088] [<c038ae85>] ? printk+0x18/0x1b
[ 2594.059094] [<fa51362d>] rt2x00mac_config_interface+0xfd/0x130
[rt2x00lib]
[ 2594.059107] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
[rt2x00lib]
[ 2594.059118] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
[ 2594.059131] [<f7f7b90c>] ieee80211_scan_completed+0x30c/0x3a0
[mac80211]
[ 2594.059141] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2594.059152] [<f7f7baf9>] ieee80211_scan_work+0x159/0x190 [mac80211]
[ 2594.059162] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
[ 2594.059165] [<c014458d>] run_workqueue+0x8d/0x150
[ 2594.059169] [<c014855a>] ? prepare_to_wait+0x3a/0x70
[ 2594.059171] [<c01446d8>] worker_thread+0x88/0xf0
[ 2594.059174] [<c0148300>] ? autoremove_wake_function+0x0/0x50
[ 2594.059177] [<c0144650>] ? worker_thread+0x0/0xf0
[ 2594.059180] [<c0147f7c>] kthread+0x3c/0x70
[ 2594.059182] [<c0147f40>] ? kthread+0x0/0x70
[ 2594.059185] [<c0103f27>] kernel_thread_helper+0x7/0x10

2009-03-18 12:56:28

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Wednesday 18 March 2009, Antonio Marques wrote:
> On Mar 18, 2009, at 10:02 , Ivo van Doorn wrote:
> > On Wednesday 18 March 2009, Johannes Berg wrote:
> >> On Wed, 2009-03-18 at 00:01 +0100, Ivo van Doorn wrote:
> >>
> >>>>> This command means that mac80211 uses the start() callback
> >>>>> function. This triggers rt2x00 to initialize
> >>>>> the registers which resets the beacon generation.
> >>>>
> >>>> Strange, that doesn't seem right. If you look at net/mac80211/
> >>>> iface.c,
> >>>> you'll see it call ->start(), then ->add_interface(), and later
> >>>> ieee80211_start_mesh(), which calls _if_config() and sets
> >>>> beacon/beacon_enabled.
> >>>
> >>> ok, I gone through the rt2x00 code a couple of times now to see
> >>> how this bug can be triggered by rt2x00,
> >>> But the only other scenario I could find, is when the open()
> >>> callback for the netdevice structure doesn't end
> >>> with a call to the config() callback function. But as far as I see
> >>> it that is happening correctly.
> >>
> >> Maybe log (+dump_stack()) all the relevant calls from mac80211 to the
> >> driver? That might give us a better idea of what's going on. Also,
> >> Antonio, make sure you're using the very latest code. I for one need
> >> sleep now :)
> >
> > Antonio, could you please use attached patch to add additional
> > debugging to rt2x00.
> > This will do a dump_stack for all important functions
> > (add_interface, remove_interface, config() and config_interface())
> >
> > It doesn't matter if this patch is on top of the previous patch or
> > not.
> >
> > Thanks,
> >
> > Ivo
> > <debug.diff>
>
> Ok, I have updated to the very latest code (still the same behaviour
> though) and
> applied the new patch. The rather lengthy list of backtraces is
> attached.

Excellent thanks. :)

Johannes, my previous assumption is apparently correct,
The following is happening:

ieee80211_open()
-> ops->add_interface()
-> ieee80211_start_mesh()
-> ieee80211_if_config()
-> ops->config_interface()
-> ieee80211_hw_config()
-> ops->config()

Because config_interface() is called before config() the radio
is not enabled at the moment config_interface() is called and
the call to config() will effectively disable beaconing.

Ivo

---

> [ 2495.333900] phy3 -> rt2x00mac_add_interface: Error - ===>
> [ 2495.398572] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
> [ 2495.398574] Call Trace:
> [ 2495.398583] [<c038ae85>] ? printk+0x18/0x1b
> [ 2495.398592] [<fa513388>] rt2x00mac_add_interface+0x58/0x200
> [rt2x00lib]
> [ 2495.398624] [<f7f82f87>] ieee80211_open+0x2c7/0x8e0 [mac80211]
> [ 2495.398631] [<c030eb62>] dev_open+0x82/0xf0
> [ 2495.398634] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
> [ 2495.398637] [<c030e479>] dev_change_flags+0x139/0x1d0
> [ 2495.398641] [<c0353b02>] devinet_ioctl+0x542/0x600
> [ 2495.398644] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2495.398647] [<c0354dca>] inet_ioctl+0x9a/0xc0
> [ 2495.398651] [<c02ffee3>] sock_ioctl+0x63/0x260
> [ 2495.398653] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2495.398658] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2495.398660] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2495.398664] [<c01c13f0>] ? alloc_fd+0xe0/0x100
> [ 2495.398666] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2495.398670] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2495.398673] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2495.398676] [<c01adfaf>] ? fput+0x1f/0x30
> [ 2495.398679] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2495.398682] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2495.400364] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
> 0x000d0000, READ: 0x000d0000
> [ 2495.503881] phy3 -> rt2x00mac_add_interface: Error - <===
> [ 2495.568516] phy3 -> rt2x00mac_config_interface: Error - ===>
> [ 2495.636217] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
> [ 2495.636219] Call Trace:
> [ 2495.636222] [<c038ae85>] ? printk+0x18/0x1b
> [ 2495.636228] [<fa513579>] rt2x00mac_config_interface+0x49/0x130
> [rt2x00lib]
> [ 2495.636241] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
> [rt2x00lib]
> [ 2495.636252] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
> [ 2495.636268] [<f7f9398a>] ieee80211_start_mesh+0x2a/0x30 [mac80211]
> [ 2495.636279] [<f7f83489>] ieee80211_open+0x7c9/0x8e0 [mac80211]
> [ 2495.636284] [<c030eb62>] dev_open+0x82/0xf0
> [ 2495.636286] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
> [ 2495.636290] [<c030e479>] dev_change_flags+0x139/0x1d0
> [ 2495.636292] [<c0353b02>] devinet_ioctl+0x542/0x600
> [ 2495.636295] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2495.636298] [<c0354dca>] inet_ioctl+0x9a/0xc0
> [ 2495.636301] [<c02ffee3>] sock_ioctl+0x63/0x260
> [ 2495.636304] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2495.636307] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2495.636310] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2495.636312] [<c01c13f0>] ? alloc_fd+0xe0/0x100
> [ 2495.636315] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2495.636318] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2495.636320] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2495.636323] [<c01adfaf>] ? fput+0x1f/0x30
> [ 2495.636326] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2495.636329] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2495.638657] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
> 0x000d0000, READ: 0x000d0000
> [ 2495.742550] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE:
> 0x00040000, READ: 0x00040000
> [ 2495.848942] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE:
> 0x001d0000, READ: 0x001d0000
> [ 2495.954156] phy3 -> rt2x00mac_config_interface: Error - <===
> [ 2496.021865] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
> [ 2496.021867] Call Trace:
> [ 2496.021870] [<c038ae85>] ? printk+0x18/0x1b
> [ 2496.021876] [<fa51362d>] rt2x00mac_config_interface+0xfd/0x130
> [rt2x00lib]
> [ 2496.021889] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
> [rt2x00lib]
> [ 2496.021900] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
> [ 2496.021914] [<f7f9398a>] ieee80211_start_mesh+0x2a/0x30 [mac80211]
> [ 2496.021925] [<f7f83489>] ieee80211_open+0x7c9/0x8e0 [mac80211]
> [ 2496.021931] [<c030eb62>] dev_open+0x82/0xf0
> [ 2496.021933] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
> [ 2496.021937] [<c030e479>] dev_change_flags+0x139/0x1d0
> [ 2496.021940] [<c0353b02>] devinet_ioctl+0x542/0x600
> [ 2496.021943] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2496.021946] [<c0354dca>] inet_ioctl+0x9a/0xc0
> [ 2496.021948] [<c02ffee3>] sock_ioctl+0x63/0x260
> [ 2496.021951] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2496.021954] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2496.021957] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2496.021960] [<c01c13f0>] ? alloc_fd+0xe0/0x100
> [ 2496.021962] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2496.021965] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2496.021968] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2496.021971] [<c01adfaf>] ? fput+0x1f/0x30
> [ 2496.021974] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2496.021976] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2496.022818] phy3 -> rt2x00mac_config: Error - ===>
> [ 2496.080208] Pid: 5061, comm: ifconfig Not tainted 2.6.29-rc8-wl #1
> [ 2496.080209] Call Trace:
> [ 2496.080213] [<c038ae85>] ? printk+0x18/0x1b
> [ 2496.080219] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2496.080235] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2496.080246] [<f7f8330f>] ieee80211_open+0x64f/0x8e0 [mac80211]
> [ 2496.080252] [<c030eb62>] dev_open+0x82/0xf0
> [ 2496.080255] [<c038d9b1>] ? _spin_unlock_bh+0x11/0x20
> [ 2496.080258] [<c030e479>] dev_change_flags+0x139/0x1d0
> [ 2496.080261] [<c0353b02>] devinet_ioctl+0x542/0x600
> [ 2496.080263] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2496.080267] [<c0354dca>] inet_ioctl+0x9a/0xc0
> [ 2496.080269] [<c02ffee3>] sock_ioctl+0x63/0x260
> [ 2496.080272] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2496.080275] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2496.080278] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2496.080280] [<c01c13f0>] ? alloc_fd+0xe0/0x100
> [ 2496.080283] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2496.080286] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2496.080289] [<c01aad27>] ? do_sys_open+0xd7/0x100
> [ 2496.080291] [<c01adfaf>] ? fput+0x1f/0x30
> [ 2496.080294] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2496.080297] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2496.085232] phy3 -> rt73usb_init_registers: Error - TXRX_CSR9
> WRITE: 0x00000000, READ: 0x00000000
> [ 2496.223630] phy3 -> rt73usb_config_duration: Error - TXRX_CSR9
> WRITE: 0x00000640, READ: 0x00000640
> [ 2496.342899] phy3 -> rt2x00mac_config: Error - <===
> [ 2496.400228] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 0
> - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
> [ 2496.402285] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 1
> - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
> [ 2496.404285] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 2
> - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
> [ 2496.406280] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue 3
> - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
> [ 2496.409318] phy3 -> rt2x00mac_config: Error - ===>
> [ 2496.466744] Pid: 5066, comm: iwconfig Not tainted 2.6.29-rc8-wl #1
> [ 2496.466746] Call Trace:
> [ 2496.466755] [<c038ae85>] ? printk+0x18/0x1b
> [ 2496.466765] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2496.466789] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2496.466819] [<f7f8e874>] ieee80211_set_freq+0x84/0x90 [mac80211]
> [ 2496.466829] [<f7f77c5e>] ieee80211_ioctl_siwfreq+0x8e/0x130
> [mac80211]
> [ 2496.466834] [<c037660b>] ioctl_standard_call+0x5b/0x380
> [ 2496.466838] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
> [ 2496.466842] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
> [ 2496.466844] [<c037624f>] wext_handle_ioctl+0x14f/0x230
> [ 2496.466854] [<f7f77bd0>] ? ieee80211_ioctl_siwfreq+0x0/0x130
> [mac80211]
> [ 2496.466858] [<c03101eb>] dev_ioctl+0x46b/0x530
> [ 2496.466861] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2496.466864] [<c023cdfa>] ? smack_sk_alloc_security+0x2a/0x70
> [ 2496.466868] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2496.466871] [<c02fff6d>] sock_ioctl+0xed/0x260
> [ 2496.466874] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2496.466876] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2496.466881] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2496.466884] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2496.466886] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2496.466890] [<c01aaaa4>] ? fd_install+0x44/0x60
> [ 2496.466893] [<c0300843>] ? sock_map_fd+0x43/0x70
> [ 2496.466896] [<c010ad05>] ? init_fpu+0x165/0x1a0
> [ 2496.466899] [<c01049c0>] ? do_device_not_available+0x0/0x60
> [ 2496.466902] [<c010ad05>] ? init_fpu+0x165/0x1a0
> [ 2496.466905] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2496.466907] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2496.477792] phy3 -> rt2x00mac_config: Error - <===
>
> After running 'iwlist mesh scan':
>
> [ 2590.349147] phy3 -> rt2x00mac_config_interface: Error - ===>
> [ 2590.416899] Pid: 5069, comm: iwlist Not tainted 2.6.29-rc8-wl #1
> [ 2590.416902] Call Trace:
> [ 2590.416911] [<c038ae85>] ? printk+0x18/0x1b
> [ 2590.416923] [<fa513579>] rt2x00mac_config_interface+0x49/0x130
> [rt2x00lib]
> [ 2590.416941] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
> [rt2x00lib]
> [ 2590.416958] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
> [ 2590.416972] [<f7f7b484>] ieee80211_start_scan+0x204/0x270 [mac80211]
> [ 2590.416982] [<f7f7b55f>] ieee80211_request_scan+0x6f/0xb0 [mac80211]
> [ 2590.416993] [<f7f84d28>] ieee80211_scan+0x38/0x50 [mac80211]
> [ 2590.417004] [<f7c831bf>] cfg80211_wext_siwscan+0x17f/0x200
> [cfg80211]
> [ 2590.417009] [<c0376749>] ioctl_standard_call+0x199/0x380
> [ 2590.417014] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
> [ 2590.417017] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
> [ 2590.417020] [<c037624f>] wext_handle_ioctl+0x14f/0x230
> [ 2590.417027] [<f7c83040>] ? cfg80211_wext_siwscan+0x0/0x200
> [cfg80211]
> [ 2590.417030] [<c03101eb>] dev_ioctl+0x46b/0x530
> [ 2590.417034] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2590.417037] [<c023cdfa>] ? smack_sk_alloc_security+0x2a/0x70
> [ 2590.417041] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2590.417044] [<c02fff6d>] sock_ioctl+0xed/0x260
> [ 2590.417047] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2590.417050] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2590.417054] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2590.417057] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2590.417059] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2590.417063] [<c01aaaa4>] ? fd_install+0x44/0x60
> [ 2590.417066] [<c0300843>] ? sock_map_fd+0x43/0x70
> [ 2590.417069] [<c0301084>] ? sys_socket+0x54/0x70
> [ 2590.417072] [<c0302135>] ? sys_socketcall+0x265/0x270
> [ 2590.417075] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2590.417078] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2590.419861] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
> 0x000d0640, READ: 0x000d0640
> [ 2590.523014] phy3 -> rt2x00mac_config_interface: Error - <===
> [ 2590.590777] Pid: 5069, comm: iwlist Not tainted 2.6.29-rc8-wl #1
> [ 2590.590779] Call Trace:
> [ 2590.590782] [<c038ae85>] ? printk+0x18/0x1b
> [ 2590.590789] [<fa51362d>] rt2x00mac_config_interface+0xfd/0x130
> [rt2x00lib]
> [ 2590.590803] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
> [rt2x00lib]
> [ 2590.590814] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
> [ 2590.590826] [<f7f7b484>] ieee80211_start_scan+0x204/0x270 [mac80211]
> [ 2590.590837] [<f7f7b55f>] ieee80211_request_scan+0x6f/0xb0 [mac80211]
> [ 2590.590848] [<f7f84d28>] ieee80211_scan+0x38/0x50 [mac80211]
> [ 2590.590857] [<f7c831bf>] cfg80211_wext_siwscan+0x17f/0x200
> [cfg80211]
> [ 2590.590860] [<c0376749>] ioctl_standard_call+0x199/0x380
> [ 2590.590864] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
> [ 2590.590867] [<c030f67d>] ? __dev_get_by_name+0x7d/0xa0
> [ 2590.590870] [<c037624f>] wext_handle_ioctl+0x14f/0x230
> [ 2590.590876] [<f7c83040>] ? cfg80211_wext_siwscan+0x0/0x200
> [cfg80211]
> [ 2590.590880] [<c03101eb>] dev_ioctl+0x46b/0x530
> [ 2590.590883] [<c011c29f>] ? do_page_fault+0x2ef/0x800
> [ 2590.590886] [<c023cdfa>] ? smack_sk_alloc_security+0x2a/0x70
> [ 2590.590889] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2590.590891] [<c02fff6d>] sock_ioctl+0xed/0x260
> [ 2590.590894] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2590.590897] [<c02ffe80>] ? sock_ioctl+0x0/0x260
> [ 2590.590900] [<c01b9358>] vfs_ioctl+0x28/0x90
> [ 2590.590903] [<c01b9872>] do_vfs_ioctl+0x72/0x5b0
> [ 2590.590905] [<c038d7a8>] ? _spin_lock+0x8/0x10
> [ 2590.590908] [<c01aaaa4>] ? fd_install+0x44/0x60
> [ 2590.590911] [<c0300843>] ? sock_map_fd+0x43/0x70
> [ 2590.590914] [<c0301084>] ? sys_socket+0x54/0x70
> [ 2590.590917] [<c0302135>] ? sys_socketcall+0x265/0x270
> [ 2590.590920] [<c01b9e13>] sys_ioctl+0x63/0x70
> [ 2590.590922] [<c010366f>] sysenter_do_call+0x12/0x33
> [ 2590.616015] phy3 -> rt2x00mac_config: Error - ===>
> [ 2590.673353] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2590.673354] Call Trace:
> [ 2590.673358] [<c038ae85>] ? printk+0x18/0x1b
> [ 2590.673364] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2590.673383] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2590.673392] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2590.673403] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2590.673413] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2590.673417] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2590.673421] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2590.673423] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2590.673426] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2590.673429] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2590.673432] [<c0147f7c>] kthread+0x3c/0x70
> [ 2590.673435] [<c0147f40>] ? kthread+0x0/0x70
> [ 2590.673438] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2590.683658] phy3 -> rt2x00mac_config: Error - <===
> [ 2590.796012] phy3 -> rt2x00mac_config: Error - ===>
> [ 2590.853381] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2590.853382] Call Trace:
> [ 2590.853386] [<c038ae85>] ? printk+0x18/0x1b
> [ 2590.853392] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2590.853411] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2590.853421] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2590.853431] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2590.853441] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2590.853444] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2590.853448] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2590.853450] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2590.853453] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2590.853456] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2590.853459] [<c0147f7c>] kthread+0x3c/0x70
> [ 2590.853461] [<c0147f40>] ? kthread+0x0/0x70
> [ 2590.853464] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2590.863813] phy3 -> rt2x00mac_config: Error - <===
> [ 2590.976011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2591.033409] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2591.033411] Call Trace:
> [ 2591.033415] [<c038ae85>] ? printk+0x18/0x1b
> [ 2591.033421] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2591.033448] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.033458] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2591.033468] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2591.033479] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.033482] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2591.033486] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2591.033488] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2591.033491] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2591.033494] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2591.033497] [<c0147f7c>] kthread+0x3c/0x70
> [ 2591.033500] [<c0147f40>] ? kthread+0x0/0x70
> [ 2591.033503] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2591.043842] phy3 -> rt2x00mac_config: Error - <===
> [ 2591.156012] phy3 -> rt2x00mac_config: Error - ===>
> [ 2591.213336] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2591.213338] Call Trace:
> [ 2591.213341] [<c038ae85>] ? printk+0x18/0x1b
> [ 2591.213347] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2591.213366] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.213376] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2591.213386] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2591.213397] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.213400] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2591.213403] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2591.213406] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2591.213409] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2591.213412] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2591.213415] [<c0147f7c>] kthread+0x3c/0x70
> [ 2591.213417] [<c0147f40>] ? kthread+0x0/0x70
> [ 2591.213420] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2591.223748] phy3 -> rt2x00mac_config: Error - <===
> [ 2591.336011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2591.393365] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2591.393366] Call Trace:
> [ 2591.393369] [<c038ae85>] ? printk+0x18/0x1b
> [ 2591.393376] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2591.393394] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.393403] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2591.393414] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2591.393424] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.393427] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2591.393430] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2591.393433] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2591.393436] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2591.393439] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2591.393442] [<c0147f7c>] kthread+0x3c/0x70
> [ 2591.393444] [<c0147f40>] ? kthread+0x0/0x70
> [ 2591.393447] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2591.403653] phy3 -> rt2x00mac_config: Error - <===
> [ 2591.516012] phy3 -> rt2x00mac_config: Error - ===>
> [ 2591.573395] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2591.573397] Call Trace:
> [ 2591.573400] [<c038ae85>] ? printk+0x18/0x1b
> [ 2591.573406] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2591.573424] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.573434] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2591.573445] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2591.573455] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.573458] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2591.573462] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2591.573464] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2591.573468] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2591.573470] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2591.573473] [<c0147f7c>] kthread+0x3c/0x70
> [ 2591.573476] [<c0147f40>] ? kthread+0x0/0x70
> [ 2591.573479] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2591.583808] phy3 -> rt2x00mac_config: Error - <===
> [ 2591.696012] phy3 -> rt2x00mac_config: Error - ===>
> [ 2591.753322] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2591.753324] Call Trace:
> [ 2591.753327] [<c038ae85>] ? printk+0x18/0x1b
> [ 2591.753333] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2591.753351] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.753361] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2591.753371] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2591.753381] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.753384] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2591.753388] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2591.753390] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2591.753393] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2591.753396] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2591.753398] [<c0147f7c>] kthread+0x3c/0x70
> [ 2591.753401] [<c0147f40>] ? kthread+0x0/0x70
> [ 2591.753404] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2591.763711] phy3 -> rt2x00mac_config: Error - <===
> [ 2591.876011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2591.933351] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2591.933353] Call Trace:
> [ 2591.933356] [<c038ae85>] ? printk+0x18/0x1b
> [ 2591.933362] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2591.933380] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.933390] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2591.933401] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2591.933411] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2591.933414] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2591.933417] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2591.933420] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2591.933423] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2591.933426] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2591.933429] [<c0147f7c>] kthread+0x3c/0x70
> [ 2591.933432] [<c0147f40>] ? kthread+0x0/0x70
> [ 2591.933434] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2591.943741] phy3 -> rt2x00mac_config: Error - <===
> [ 2592.056011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2592.113388] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2592.113389] Call Trace:
> [ 2592.113392] [<c038ae85>] ? printk+0x18/0x1b
> [ 2592.113399] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2592.113417] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.113427] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2592.113437] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2592.113447] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.113450] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2592.113454] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2592.113456] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2592.113460] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2592.113462] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2592.113465] [<c0147f7c>] kthread+0x3c/0x70
> [ 2592.113468] [<c0147f40>] ? kthread+0x0/0x70
> [ 2592.113471] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2592.123771] phy3 -> rt2x00mac_config: Error - <===
> [ 2592.236011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2592.293307] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2592.293308] Call Trace:
> [ 2592.293312] [<c038ae85>] ? printk+0x18/0x1b
> [ 2592.293318] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2592.293336] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.293346] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2592.293356] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2592.293367] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.293370] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2592.293373] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2592.293376] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2592.293379] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2592.293382] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2592.293385] [<c0147f7c>] kthread+0x3c/0x70
> [ 2592.293387] [<c0147f40>] ? kthread+0x0/0x70
> [ 2592.293390] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2592.303677] phy3 -> rt2x00mac_config: Error - <===
> [ 2592.416011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2592.473336] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2592.473337] Call Trace:
> [ 2592.473341] [<c038ae85>] ? printk+0x18/0x1b
> [ 2592.473347] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2592.473365] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.473374] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2592.473385] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2592.473395] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.473398] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2592.473402] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2592.473404] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2592.473408] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2592.473410] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2592.473413] [<c0147f7c>] kthread+0x3c/0x70
> [ 2592.473416] [<c0147f40>] ? kthread+0x0/0x70
> [ 2592.473419] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2592.483707] phy3 -> rt2x00mac_config: Error - <===
> [ 2592.596011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2592.653367] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2592.653369] Call Trace:
> [ 2592.653372] [<c038ae85>] ? printk+0x18/0x1b
> [ 2592.653378] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2592.653397] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.653406] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2592.653417] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2592.653427] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2592.653430] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2592.653433] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2592.653436] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2592.653439] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2592.653442] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2592.653445] [<c0147f7c>] kthread+0x3c/0x70
> [ 2592.653448] [<c0147f40>] ? kthread+0x0/0x70
> [ 2592.653450] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2592.663736] phy3 -> rt2x00mac_config: Error - <===
> [ 2592.948010] phy3 -> rt2x00mac_config: Error - ===>
> [ 2593.005414] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2593.005416] Call Trace:
> [ 2593.005419] [<c038ae85>] ? printk+0x18/0x1b
> [ 2593.005425] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2593.005448] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.005458] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2593.005468] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2593.005478] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.005481] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2593.005484] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2593.005487] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2593.005490] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2593.005493] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2593.005496] [<c0147f7c>] kthread+0x3c/0x70
> [ 2593.005498] [<c0147f40>] ? kthread+0x0/0x70
> [ 2593.005501] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2593.015795] phy3 -> rt2x00mac_config: Error - <===
> [ 2593.128011] phy3 -> rt2x00mac_config: Error - ===>
> [ 2593.185344] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2593.185346] Call Trace:
> [ 2593.185349] [<c038ae85>] ? printk+0x18/0x1b
> [ 2593.185355] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2593.185374] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.185383] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2593.185393] [<f7f7ba19>] ieee80211_scan_work+0x79/0x190 [mac80211]
> [ 2593.185404] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.185407] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2593.185410] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2593.185413] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2593.185416] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2593.185419] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2593.185421] [<c0147f7c>] kthread+0x3c/0x70
> [ 2593.185424] [<c0147f40>] ? kthread+0x0/0x70
> [ 2593.185427] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2593.195699] phy3 -> rt2x00mac_config: Error - <===
> [ 2593.480022] phy3 -> rt2x00mac_config: Error - ===>
> [ 2593.537396] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2593.537397] Call Trace:
> [ 2593.537402] [<c038ae85>] ? printk+0x18/0x1b
> [ 2593.537408] [<fa5136a6>] rt2x00mac_config+0x46/0xf0 [rt2x00lib]
> [ 2593.537428] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.537438] [<f7f76ee2>] ieee80211_hw_config+0xb2/0xc0 [mac80211]
> [ 2593.537449] [<f7f7b6b7>] ieee80211_scan_completed+0xb7/0x3a0
> [mac80211]
> [ 2593.537452] [<c038b3ce>] ? schedule+0x3de/0xa20
> [ 2593.537462] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.537473] [<f7f7baf9>] ieee80211_scan_work+0x159/0x190 [mac80211]
> [ 2593.537483] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.537486] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2593.537490] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2593.537492] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2593.537495] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2593.537498] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2593.537501] [<c0147f7c>] kthread+0x3c/0x70
> [ 2593.537504] [<c0147f40>] ? kthread+0x0/0x70
> [ 2593.537506] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2593.547882] phy3 -> rt2x00mac_config: Error - <===
> [ 2593.606302] phy3 -> rt2x00mac_config_interface: Error - ===>
> [ 2593.674076] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2593.674078] Call Trace:
> [ 2593.674085] [<c038ae85>] ? printk+0x18/0x1b
> [ 2593.674094] [<fa513579>] rt2x00mac_config_interface+0x49/0x130
> [rt2x00lib]
> [ 2593.674111] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
> [rt2x00lib]
> [ 2593.674126] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
> [ 2593.674139] [<f7f7b90c>] ieee80211_scan_completed+0x30c/0x3a0
> [mac80211]
> [ 2593.674150] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.674160] [<f7f7baf9>] ieee80211_scan_work+0x159/0x190 [mac80211]
> [ 2593.674171] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2593.674175] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2593.674179] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2593.674182] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2593.674185] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2593.674188] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2593.674190] [<c0147f7c>] kthread+0x3c/0x70
> [ 2593.674193] [<c0147f40>] ? kthread+0x0/0x70
> [ 2593.674196] [<c0103f27>] kernel_thread_helper+0x7/0x10
> [ 2593.675901] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE:
> 0x000d0640, READ: 0x000d0640
> [ 2593.779792] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE:
> 0x00040640, READ: 0x00040640
> [ 2593.886185] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE:
> 0x001d0640, READ: 0x001d0640
> [ 2593.991374] phy3 -> rt2x00mac_config_interface: Error - <===
> [ 2594.059083] Pid: 5028, comm: phy3 Not tainted 2.6.29-rc8-wl #1
> [ 2594.059085] Call Trace:
> [ 2594.059088] [<c038ae85>] ? printk+0x18/0x1b
> [ 2594.059094] [<fa51362d>] rt2x00mac_config_interface+0xfd/0x130
> [rt2x00lib]
> [ 2594.059107] [<fa513530>] ? rt2x00mac_config_interface+0x0/0x130
> [rt2x00lib]
> [ 2594.059118] [<f7f76a39>] ieee80211_if_config+0xd9/0x1f0 [mac80211]
> [ 2594.059131] [<f7f7b90c>] ieee80211_scan_completed+0x30c/0x3a0
> [mac80211]
> [ 2594.059141] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2594.059152] [<f7f7baf9>] ieee80211_scan_work+0x159/0x190 [mac80211]
> [ 2594.059162] [<f7f7b9a0>] ? ieee80211_scan_work+0x0/0x190 [mac80211]
> [ 2594.059165] [<c014458d>] run_workqueue+0x8d/0x150
> [ 2594.059169] [<c014855a>] ? prepare_to_wait+0x3a/0x70
> [ 2594.059171] [<c01446d8>] worker_thread+0x88/0xf0
> [ 2594.059174] [<c0148300>] ? autoremove_wake_function+0x0/0x50
> [ 2594.059177] [<c0144650>] ? worker_thread+0x0/0xf0
> [ 2594.059180] [<c0147f7c>] kthread+0x3c/0x70
> [ 2594.059182] [<c0147f40>] ? kthread+0x0/0x70
> [ 2594.059185] [<c0103f27>] kernel_thread_helper+0x7/0x10
>
>

2009-03-17 22:03:45

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Tuesday 17 March 2009, Antonio Marques wrote:
> On Mar 17, 2009, at 9:31 , Ivo van Doorn wrote:
> > On Monday 16 March 2009, Antonio Marques wrote:
> >> On Mar 16, 2009, at 14:58 , Ivo van Doorn wrote:
> >>> On Monday 16 March 2009, Ant=F3nio Marques wrote:
> >>>>
> >>>> As requested, I have attached the output of the script run befor=
e =20
> >>>> and
> >>>> after
> >>>> running 'iwlist mesh scan'. Unfortunately there seems to be no
> >>>> change in
> >>>> the output. I have also included the queue statistics as these d=
o
> >>>> change from
> >>>> one state to the next. Any further pointers to help debug this? =
=20
> >>>> I'll
> >>>> gladly test
> >>>> any patches that try to address this issue.
> >>>
> >>> The dumps aren't correct, I had forgotten to update the script on
> >>> the website
> >>> after some API for the rt2x00 debugfs interface changes recently.
> >>> Attached is the correct patch.
> >>>
> >>> Ivo
> >>> <rt2x00_regdump.sh>
> >>
> >> Fixed, new dumps are attached.
> >
> > Thanks for the dumps, the reason why the beaconing isn't working
> > is (fortunately) very obvious from the registers point of view.
> > The "generate beacons" bit is simply not enabled. However the reaso=
n
> > why this bit has not been set escapes me. Could you apply the attac=
hed
> > patch? This will add extra debug messages to the driver to see when=
=20
> > the
> > beacon generation bit is set.
> >
> > Thanks,
> >
> > Ivo
> > <rt73usb.beacon.diff>
>=20
> Here are the relevant portions of the dmesg with the aforementioned
> patch applied.
>=20
> After interface creation and before 'iwlist mesh scan':

<...snip...>

> Hope this is useful.

It absolutely is :)

Thanks,

Ivo

2009-03-16 14:58:07

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Monday 16 March 2009, Ant?nio Marques wrote:
> On Mar 15, 2009, at 13:45 , Ivo van Doorn wrote:
> > On Sunday 15 March 2009, Antonio Marques wrote:
> >> Upon further investigation, beaconing does not work after configuring
> >> an interface in mesh point mode but running 'iwlist mesh scan'
> >> triggers something in the driver that enables beaconing.
> >> After executing this command beacons are generated and correctly
> >> received at other nodes.
> >
> > Thats odd, but very interesting :)
> > Could you enable debugfs and CONFIG_RT2X00_LIB_DEBUGFS and
> > use the script from http://kernel.org/pub/linux/kernel/people/ivd/tools/rt2x00_regdump.sh
> > to create a register dump before running 'iwlist mesh scan' and
> > afterwards.
> > (So basically when beaconing is broken and when it is working).
> >
> > Thanks,
> >
> > Ivo
>
>
> As requested, I have attached the output of the script run before and
> after
> running 'iwlist mesh scan'. Unfortunately there seems to be no change in
> the output. I have also included the queue statistics as these do
> change from
> one state to the next. Any further pointers to help debug this? I'll
> gladly test
> any patches that try to address this issue.

The dumps aren't correct, I had forgotten to update the script on the website
after some API for the rt2x00 debugfs interface changes recently.
Attached is the correct patch.

Ivo

Attachments:

2009-03-18 13:13:28

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Wed, 2009-03-18 at 13:48 +0100, Ivo van Doorn wrote:

> Excellent thanks. :)
>
> Johannes, my previous assumption is apparently correct,
> The following is happening:
>
> ieee80211_open()
> -> ops->add_interface()
> -> ieee80211_start_mesh()
> -> ieee80211_if_config()
> -> ops->config_interface()
> -> ieee80211_hw_config()
> -> ops->config()
>
> Because config_interface() is called before config() the radio
> is not enabled at the moment config_interface() is called and
> the call to config() will effectively disable beaconing.

Ah. I thought you were saying ->start() came after ->config_interface(),
->config() coming after it makes no sense either but we haven't even
tried to avoid that so far... In fact, it is perfectly legal for
->config() to be called after ->config_interface() when, for example,
you change the channel. Not that I disagree -- we should be setting the
beacon interval before enabling beaconing...

What exactly is the problem here? The fact that we don't enable the
radio until after having configured beaconing? I'm not sure how to solve
this, to be honest.

johannes

Attachments:

2009-03-16 19:13:13

by Antonio Marques

Subject: Re: rt2x00 mesh support

On Mar 16, 2009, at 14:58 , Ivo van Doorn wrote:
> On Monday 16 March 2009, Ant?nio Marques wrote:
>>
>> As requested, I have attached the output of the script run before and
>> after
>> running 'iwlist mesh scan'. Unfortunately there seems to be no
>> change in
>> the output. I have also included the queue statistics as these do
>> change from
>> one state to the next. Any further pointers to help debug this? I'll
>> gladly test
>> any patches that try to address this issue.
>
> The dumps aren't correct, I had forgotten to update the script on
> the website
> after some API for the rt2x00 debugfs interface changes recently.
> Attached is the correct patch.
>
> Ivo
> <rt2x00_regdump.sh>

Fixed, new dumps are attached.

Antonio Marques

Attachments:

2009-03-18 13:31:49

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Wednesday 18 March 2009, Johannes Berg wrote:
> On Wed, 2009-03-18 at 13:48 +0100, Ivo van Doorn wrote:
>
> > Excellent thanks. :)
> >
> > Johannes, my previous assumption is apparently correct,
> > The following is happening:
> >
> > ieee80211_open()
> > -> ops->add_interface()
> > -> ieee80211_start_mesh()
> > -> ieee80211_if_config()
> > -> ops->config_interface()
> > -> ieee80211_hw_config()
> > -> ops->config()
> >
> > Because config_interface() is called before config() the radio
> > is not enabled at the moment config_interface() is called and
> > the call to config() will effectively disable beaconing.
>
> Ah. I thought you were saying ->start() came after ->config_interface(),

Yeah that was my first guess :)

> ->config() coming after it makes no sense either but we haven't even
> tried to avoid that so far... In fact, it is perfectly legal for
> ->config() to be called after ->config_interface() when, for example,
> you change the channel. Not that I disagree -- we should be setting the
> beacon interval before enabling beaconing...

True, the problem however is that when enabling the radio it is possible/likely
that a lot of settings will be lost. For rt2x00 we must reset almost all registers
to make sure everything is set correctly again.

> What exactly is the problem here? The fact that we don't enable the
> radio until after having configured beaconing? I'm not sure how to solve
> this, to be honest.

Neither do I, perhaps we should make sure that a call to config() when
the enabled_radio field has changed should trigger additional reconfigurations
as well. But I don't really like such a solution.. :(

Perhaps should check if a beacon was provided while the radio was off,
and either request a new beacon or upload the previously provided beacon when
the radio is being enabled.

Ivo

2009-03-17 21:54:21

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Tue, 2009-03-17 at 22:50 +0100, Ivo van Doorn wrote:

> >
> > Actually, it does, in ieee80211_start_mesh(). I have no idea then.
>
> I understood that in normal master mode rt73usb doesn't scan either,
> so my bet is that the bug is in rt2x00. :)

But the bug seems to hit almost all other drivers too, which confuses
me. I'd double-check that the _start_mesh() call actually goes through
and a beacon is available at that point...

johannes

Attachments:

2009-03-17 19:47:42

by Antonio Marques

Subject: Re: rt2x00 mesh support

On Mar 17, 2009, at 9:31 , Ivo van Doorn wrote:
> On Monday 16 March 2009, Antonio Marques wrote:
>> On Mar 16, 2009, at 14:58 , Ivo van Doorn wrote:
>>> On Monday 16 March 2009, Ant=F3nio Marques wrote:
>>>>
>>>> As requested, I have attached the output of the script run before =
=20
>>>> and
>>>> after
>>>> running 'iwlist mesh scan'. Unfortunately there seems to be no
>>>> change in
>>>> the output. I have also included the queue statistics as these do
>>>> change from
>>>> one state to the next. Any further pointers to help debug this? =20
>>>> I'll
>>>> gladly test
>>>> any patches that try to address this issue.
>>>
>>> The dumps aren't correct, I had forgotten to update the script on
>>> the website
>>> after some API for the rt2x00 debugfs interface changes recently.
>>> Attached is the correct patch.
>>>
>>> Ivo
>>> <rt2x00_regdump.sh>
>>
>> Fixed, new dumps are attached.
>
> Thanks for the dumps, the reason why the beaconing isn't working
> is (fortunately) very obvious from the registers point of view.
> The "generate beacons" bit is simply not enabled. However the reason
> why this bit has not been set escapes me. Could you apply the attache=
d
> patch? This will add extra debug messages to the driver to see when =20
> the
> beacon generation bit is set.
>
> Thanks,
>
> Ivo
> <rt73usb.beacon.diff>

Here are the relevant portions of the dmesg with the aforementioned
patch applied.

After interface creation and before 'iwlist mesh scan':

[108544.382327] phy3 -> rt73usb_validate_eeprom: EEPROM recovery - =20
NIC: 0xffef
[108544.382332] phy3 -> rt73usb_validate_eeprom: EEPROM recovery - =20
Led: 0xe000
[108544.382334] phy3 -> rt73usb_validate_eeprom: EEPROM recovery - =20
RSSI OFFSET A: 0x0000
[108544.382561] phy3 -> rt2x00_set_chip: Info - Chipset detected - rt: =
=20
1300, rf: 0002, rev: 0002573a.
[108544.384587] phy3: Selected rate control algorithm 'minstrel'
[108544.385282] Registered led device: rt73usb-phy3::radio
[108544.385296] Registered led device: rt73usb-phy3::assoc
[108544.385309] Registered led device: rt73usb-phy3::quality
[108544.385995] usbcore: registered new interface driver rt73usb
[108565.147588] phy3 -> rt2x00lib_request_firmware: Info - Loading =20
firmware file 'rt73.bin'.
[108565.147595] rt73usb 2-5:1.0: firmware: requesting rt73.bin
[108565.152149] phy3 -> rt2x00lib_request_firmware: Info - Firmware =20
detected - version: 1.7.
[108565.174384] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: =20
0x000d0000, READ: 0x000d0000
[108565.280398] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: =20
0x000d0000, READ: 0x000d0000
[108565.385291] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE: =
=20
0x00040000, READ: 0x00040000
[108565.492687] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 =20
WRITE: 0x001d0000, READ: 0x001d0000
[108565.603206] phy3 -> rt73usb_init_registers: Error - TXRX_CSR9 =20
WRITE: 0x00000000, READ: 0x00000000
[108565.742604] phy3 -> rt73usb_config_duration: Error - TXRX_CSR9 =20
WRITE: 0x00000640, READ: 0x00000640
[108565.863000] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue =20
0 - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[108565.864999] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue =20
1 - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[108565.866996] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue =20
2 - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.
[108565.869001] phy3 -> rt2x00mac_conf_tx: Info - Configured TX queue =20
3 - CWmin: 5, CWmax: 10, Aifs: 2, TXop: 0.

After 'iwlist mesh scan':

[108700.626333] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: =20
0x000d0640, READ: 0x000d0640
[108701.756022] cfg80211: Found new beacon on frequency: 2472 MHz (Ch =20
13) on phy3
[108701.756031] cfg80211: Enabling active scanning on frequency: 2472 =20
MHz (Ch 13) on phy3
[108701.756034] cfg80211: Enabling beaconing on frequency: 2472 MHz =20
(Ch 13) on phy3
[108701.756037] cfg80211: Enabling active scanning on frequency: 2472 =20
MHz (Ch 13) on phy0
[108701.756039] cfg80211: Enabling beaconing on frequency: 2472 MHz =20
(Ch 13) on phy0
[108702.178713] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: =20
0x000d0640, READ: 0x000d0640
[108702.287605] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE: =
=20
0x00040640, READ: 0x00040640
[108702.395122] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 =20
WRITE: 0x001d0640, READ: 0x001d0640

Hope this is useful.

Antonio Marques

2009-03-17 22:36:20

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Tue, 2009-03-17 at 23:04 +0100, Ivo van Doorn wrote:

> I think I found something interesting in the log from Antonio which does
> suggest a mac80211 bug:
>
>
> > [108565.280398] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: 0x000d0000, READ: 0x000d0000
> > [108565.385291] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE: 0x00040000, READ: 0x00040000
> > [108565.492687] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE: 0x001d0000, READ: 0x001d0000
>
> These 3 commands mean that mac80211 has send the beacon data.
>
> > [108565.603206] phy3 -> rt73usb_init_registers: Error - TXRX_CSR9 WRITE: 0x00000000, READ: 0x00000000
>
> This command means that mac80211 uses the start() callback function. This triggers rt2x00 to initialize
> the registers which resets the beacon generation.

Strange, that doesn't seem right. If you look at net/mac80211/iface.c,
you'll see it call ->start(), then ->add_interface(), and later
ieee80211_start_mesh(), which calls _if_config() and sets
beacon/beacon_enabled.

johannes

Attachments:

2009-03-17 23:04:55

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Wed, 2009-03-18 at 00:01 +0100, Ivo van Doorn wrote:

> > > This command means that mac80211 uses the start() callback function. This triggers rt2x00 to initialize
> > > the registers which resets the beacon generation.
> >
> > Strange, that doesn't seem right. If you look at net/mac80211/iface.c,
> > you'll see it call ->start(), then ->add_interface(), and later
> > ieee80211_start_mesh(), which calls _if_config() and sets
> > beacon/beacon_enabled.
>
> ok, I gone through the rt2x00 code a couple of times now to see how this bug can be triggered by rt2x00,
> But the only other scenario I could find, is when the open() callback for the netdevice structure doesn't end
> with a call to the config() callback function. But as far as I see it that is happening correctly.

Maybe log (+dump_stack()) all the relevant calls from mac80211 to the
driver? That might give us a better idea of what's going on. Also,
Antonio, make sure you're using the very latest code. I for one need
sleep now :)

johannes

Attachments:

2009-03-15 13:45:08

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Sunday 15 March 2009, Antonio Marques wrote:
> Upon further investigation, beaconing does not work after configuring
> an interface in mesh point mode but running 'iwlist mesh scan'
> triggers something in the driver that enables beaconing.
> After executing this command beacons are generated and correctly
> received at other nodes.

Thats odd, but very interesting :)
Could you enable debugfs and CONFIG_RT2X00_LIB_DEBUGFS and
use the script from http://kernel.org/pub/linux/kernel/people/ivd/tools=
/rt2x00_regdump.sh
to create a register dump before running 'iwlist mesh scan' and afterwa=
rds.
(So basically when beaconing is broken and when it is working).

Thanks,

Ivo

> This behaviour is present using both rt73usb and rt2500pci based card=
s.
> Once beaconing is triggered the interface works as expected and mesh
> peer links are automatically established. I assume this is a bug in =20
> the rt2x00
> driver. Is there anything I can do to help debug this problem?
>=20
> Thanks,
> Antonio Marques
>=20
> On Jan 24, 2009, at 11:40 , Ant=F3nio Marques wrote:
> > Ok. I didn't realize the driver was broken and the issue wasn't =20
> > specific
> > to mesh support. I hope the driver maintainers can solve this soon.
> >
> > Thanks,
> > Antonio Marques
> >
> > On Jan 23, 2009, at 19:02 , Andrey Yurovsky wrote:
> >> Hi Antonio. As I understand it, beaconing is currently broken in
> >> rt2x00 (it used to work in the past). This means that, until the
> >> device can send beacons again, it won't be able to do mesh (or AP =
or
> >> IBSS). However the commit in question at least sets up the driver=
to
> >> support mesh as soon as beaconing works again.
> >>
> >> On Fri, Jan 23, 2009 at 10:58 AM, Antonio Marques <[email protected]> =
=20
> >> wrote:
> >>> Hi,
> >>>
> >>> I have been trying to setup a mesh network using the 802.11s =20
> >>> stack, but
> >>> unfortunately the only hardware that I have readily available are=
=20
> >>> rt2x00
> >>> usb dongles and an ath5k mini-pci card. Since support for rt2x00
> >>> driver is listed on o11s.org as being in development, what is the=
=20
> >>> current
> >>> status
> >>> of mesh support for this driver?
> >>>
> >>> I see recent commit activity such as
> >>> fdc26201323eb8ba543ac5624f8d71e55b6f7352,
> >>> "rt2x00: Add mesh support" but I am still unable to establish mes=
h =20
> >>> links
> >>> using
> >>> rt2x00 devices. An rt2x00 device can see the ath5k device =20
> >>> according to
> >>> 'iw dev mesh station dump', but the link state never changes to =20
> >>> ESTAB.
> >>>
> >>> Thanks,
> >>> Antonio Marques
> >>>
> >>>
> >>> --
> >>> To unsubscribe from this list: send the line "unsubscribe linux-=20
> >>> wireless" in
> >>> the body of a message to [email protected]
> >>> More majordomo info at http://vger.kernel.org/majordomo-info.htm=
l
> >>>
> >
>=20
>=20

2009-03-15 11:54:36

by Antonio Marques

Subject: Re: rt2x00 mesh support

Upon further investigation, beaconing does not work after configuring
an interface in mesh point mode but running 'iwlist mesh scan'
triggers something in the driver that enables beaconing.
After executing this command beacons are generated and correctly
received at other nodes.

This behaviour is present using both rt73usb and rt2500pci based cards.
Once beaconing is triggered the interface works as expected and mesh
peer links are automatically established. I assume this is a bug in =20
the rt2x00
driver. Is there anything I can do to help debug this problem?

Thanks,
Antonio Marques

On Jan 24, 2009, at 11:40 , Ant=F3nio Marques wrote:
> Ok. I didn't realize the driver was broken and the issue wasn't =20
> specific
> to mesh support. I hope the driver maintainers can solve this soon.
>
> Thanks,
> Antonio Marques
>
> On Jan 23, 2009, at 19:02 , Andrey Yurovsky wrote:
>> Hi Antonio. As I understand it, beaconing is currently broken in
>> rt2x00 (it used to work in the past). This means that, until the
>> device can send beacons again, it won't be able to do mesh (or AP or
>> IBSS). However the commit in question at least sets up the driver t=
o
>> support mesh as soon as beaconing works again.
>>
>> On Fri, Jan 23, 2009 at 10:58 AM, Antonio Marques <[email protected]> =20
>> wrote:
>>> Hi,
>>>
>>> I have been trying to setup a mesh network using the 802.11s =20
>>> stack, but
>>> unfortunately the only hardware that I have readily available are =20
>>> rt2x00
>>> usb dongles and an ath5k mini-pci card. Since support for rt2x00
>>> driver is listed on o11s.org as being in development, what is the =20
>>> current
>>> status
>>> of mesh support for this driver?
>>>
>>> I see recent commit activity such as
>>> fdc26201323eb8ba543ac5624f8d71e55b6f7352,
>>> "rt2x00: Add mesh support" but I am still unable to establish mesh =
=20
>>> links
>>> using
>>> rt2x00 devices. An rt2x00 device can see the ath5k device =20
>>> according to
>>> 'iw dev mesh station dump', but the link state never changes to =20
>>> ESTAB.
>>>
>>> Thanks,
>>> Antonio Marques
>>>
>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-=20
>>> wireless" in
>>> the body of a message to [email protected]
>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>
>

2009-03-19 21:56:01

by Antonio Marques

Subject: Re: rt2x00 mesh support

On Mar 18, 2009, at 13:36 , Johannes Berg wrote:
> On Wed, 2009-03-18 at 14:31 +0100, Ivo van Doorn wrote:
>
>>> ->config() coming after it makes no sense either but we haven't even
>>> tried to avoid that so far... In fact, it is perfectly legal for
>>> ->config() to be called after ->config_interface() when, for
>>> example,
>>> you change the channel. Not that I disagree -- we should be
>>> setting the
>>> beacon interval before enabling beaconing...
>>
>> True, the problem however is that when enabling the radio it is
>> possible/likely
>> that a lot of settings will be lost. For rt2x00 we must reset
>> almost all registers
>> to make sure everything is set correctly again.
>
> Yeah, that makes sense... I just don't know how to handle it.
>
>>> What exactly is the problem here? The fact that we don't enable the
>>> radio until after having configured beaconing? I'm not sure how to
>>> solve
>>> this, to be honest.
>>
>> Neither do I, perhaps we should make sure that a call to config()
>> when
>> the enabled_radio field has changed should trigger additional
>> reconfigurations
>> as well. But I don't really like such a solution.. :(
>
> We could do that, but there's no limit to what that would be, up to
> requiring basically a call to __ieee80211_resume() (from pm.c)...
>
>> Perhaps should check if a beacon was provided while the radio was
>> off,
>> and either request a new beacon or upload the previously provided
>> beacon when
>> the radio is being enabled.
>
> I'm thinking that will be necessary, imagine we integrate rfkill in
> mac80211 like we should, and set radio_enabled = false while being an
> IBSS member?
>
> OTOH, this problem hitting a number of drivers suggests we should
> find a
> generic fix.
>
> johannes

Thank you Johannes and Ivo for helping to narrow down this problem.
Would
storing the beacon configuration in the driver before clearing the
registers and then
reloading it be an adequate short-term solution for fixing this issue
on rt2x00? Some
other drivers (b43, ath5k) seem to overcome this shortcoming in the
way the function
calls are ordered. Although a generic fix would be great, fixing this
on rt2x00 would
greatly increase the number of devices supporting mesh point mode.

Antonio Marques

2009-03-17 14:12:21

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Tue, 2009-03-17 at 10:31 +0100, Ivo van Doorn wrote:
> On Monday 16 March 2009, Antonio Marques wrote:
> > On Mar 16, 2009, at 14:58 , Ivo van Doorn wrote:
> > > On Monday 16 March 2009, António Marques wrote:
> > >>
> > >> As requested, I have attached the output of the script run before and
> > >> after
> > >> running 'iwlist mesh scan'. Unfortunately there seems to be no
> > >> change in
> > >> the output. I have also included the queue statistics as these do
> > >> change from
> > >> one state to the next. Any further pointers to help debug this? I'll
> > >> gladly test
> > >> any patches that try to address this issue.
> > >
> > > The dumps aren't correct, I had forgotten to update the script on
> > > the website
> > > after some API for the rt2x00 debugfs interface changes recently.
> > > Attached is the correct patch.
> > >
> > > Ivo
> > > <rt2x00_regdump.sh>
> >
> > Fixed, new dumps are attached.
>
> Thanks for the dumps, the reason why the beaconing isn't working
> is (fortunately) very obvious from the registers point of view.
> The "generate beacons" bit is simply not enabled. However the reason
> why this bit has not been set escapes me. Could you apply the attached
> patch? This will add extra debug messages to the driver to see when the
> beacon generation bit is set.

I think mac80211 is probably not requesting it until you scan -- since
once you scan it calls ieee80211_if_config internally and changes that
bit. Some mesh code needs to call ieee80211_if_config() with the beacon
enable change flag.

johannes

Attachments:

2009-03-17 23:01:12

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Tuesday 17 March 2009, Johannes Berg wrote:
> On Tue, 2009-03-17 at 23:04 +0100, Ivo van Doorn wrote:
>
> > I think I found something interesting in the log from Antonio which does
> > suggest a mac80211 bug:
> >
> >
> > > [108565.280398] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: 0x000d0000, READ: 0x000d0000
> > > [108565.385291] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE: 0x00040000, READ: 0x00040000
> > > [108565.492687] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE: 0x001d0000, READ: 0x001d0000
> >
> > These 3 commands mean that mac80211 has send the beacon data.
> >
> > > [108565.603206] phy3 -> rt73usb_init_registers: Error - TXRX_CSR9 WRITE: 0x00000000, READ: 0x00000000
> >
> > This command means that mac80211 uses the start() callback function. This triggers rt2x00 to initialize
> > the registers which resets the beacon generation.
>
> Strange, that doesn't seem right. If you look at net/mac80211/iface.c,
> you'll see it call ->start(), then ->add_interface(), and later
> ieee80211_start_mesh(), which calls _if_config() and sets
> beacon/beacon_enabled.

ok, I gone through the rt2x00 code a couple of times now to see how this bug can be triggered by rt2x00,
But the only other scenario I could find, is when the open() callback for the netdevice structure doesn't end
with a call to the config() callback function. But as far as I see it that is happening correctly.

Ivo

2009-03-16 01:58:44

by Pat Erley

Subject: Re: rt2x00 mesh support

Ivo van Doorn wrote:
> On Sunday 15 March 2009, Antonio Marques wrote:
>> Upon further investigation, beaconing does not work after configuring
>> an interface in mesh point mode but running 'iwlist mesh scan'
>> triggers something in the driver that enables beaconing.
>> After executing this command beacons are generated and correctly
>> received at other nodes.
>
> Thats odd, but very interesting :)
> Could you enable debugfs and CONFIG_RT2X00_LIB_DEBUGFS and
> use the script from http://kernel.org/pub/linux/kernel/people/ivd/tools/rt2x00_regdump.sh
> to create a register dump before running 'iwlist mesh scan' and afterwards.
> (So basically when beaconing is broken and when it is working).
>
> Thanks,
>
> Ivo

I get identical behavior with the patch I'm about to RFC for ath9k to enable
mesh mode. I just want to test that it works with my b43, rt61pci, and
rt2x00usb devices. Of the 4, ONLY b43 enables beaconing for mesh mode on
interface up. I suspect my ath5k one will exhibit similar behavior. I've
reviewed the b43 code about 100 times during the writing of my patch for ath9k
and I can't spot what it's doing that's so different.

Pat

2009-03-17 09:31:46

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Monday 16 March 2009, Antonio Marques wrote:
> On Mar 16, 2009, at 14:58 , Ivo van Doorn wrote:
> > On Monday 16 March 2009, Ant?nio Marques wrote:
> >>
> >> As requested, I have attached the output of the script run before and
> >> after
> >> running 'iwlist mesh scan'. Unfortunately there seems to be no
> >> change in
> >> the output. I have also included the queue statistics as these do
> >> change from
> >> one state to the next. Any further pointers to help debug this? I'll
> >> gladly test
> >> any patches that try to address this issue.
> >
> > The dumps aren't correct, I had forgotten to update the script on
> > the website
> > after some API for the rt2x00 debugfs interface changes recently.
> > Attached is the correct patch.
> >
> > Ivo
> > <rt2x00_regdump.sh>
>
> Fixed, new dumps are attached.

Thanks for the dumps, the reason why the beaconing isn't working
is (fortunately) very obvious from the registers point of view.
The "generate beacons" bit is simply not enabled. However the reason
why this bit has not been set escapes me. Could you apply the attached
patch? This will add extra debug messages to the driver to see when the
beacon generation bit is set.

Thanks,

Ivo

Attachments:

2009-03-18 13:36:49

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Wed, 2009-03-18 at 14:31 +0100, Ivo van Doorn wrote:

> > ->config() coming after it makes no sense either but we haven't even
> > tried to avoid that so far... In fact, it is perfectly legal for
> > ->config() to be called after ->config_interface() when, for example,
> > you change the channel. Not that I disagree -- we should be setting the
> > beacon interval before enabling beaconing...
>
> True, the problem however is that when enabling the radio it is possible/likely
> that a lot of settings will be lost. For rt2x00 we must reset almost all registers
> to make sure everything is set correctly again.

Yeah, that makes sense... I just don't know how to handle it.

> > What exactly is the problem here? The fact that we don't enable the
> > radio until after having configured beaconing? I'm not sure how to solve
> > this, to be honest.
>
> Neither do I, perhaps we should make sure that a call to config() when
> the enabled_radio field has changed should trigger additional reconfigurations
> as well. But I don't really like such a solution.. :(

We could do that, but there's no limit to what that would be, up to
requiring basically a call to __ieee80211_resume() (from pm.c)...

> Perhaps should check if a beacon was provided while the radio was off,
> and either request a new beacon or upload the previously provided beacon when
> the radio is being enabled.

I'm thinking that will be necessary, imagine we integrate rfkill in
mac80211 like we should, and set radio_enabled = false while being an
IBSS member?

OTOH, this problem hitting a number of drivers suggests we should find a
generic fix.

johannes

Attachments:

2009-03-18 10:02:26

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Wednesday 18 March 2009, Johannes Berg wrote:
> On Wed, 2009-03-18 at 00:01 +0100, Ivo van Doorn wrote:
>
> > > > This command means that mac80211 uses the start() callback function. This triggers rt2x00 to initialize
> > > > the registers which resets the beacon generation.
> > >
> > > Strange, that doesn't seem right. If you look at net/mac80211/iface.c,
> > > you'll see it call ->start(), then ->add_interface(), and later
> > > ieee80211_start_mesh(), which calls _if_config() and sets
> > > beacon/beacon_enabled.
> >
> > ok, I gone through the rt2x00 code a couple of times now to see how this bug can be triggered by rt2x00,
> > But the only other scenario I could find, is when the open() callback for the netdevice structure doesn't end
> > with a call to the config() callback function. But as far as I see it that is happening correctly.
>
> Maybe log (+dump_stack()) all the relevant calls from mac80211 to the
> driver? That might give us a better idea of what's going on. Also,
> Antonio, make sure you're using the very latest code. I for one need
> sleep now :)

Antonio, could you please use attached patch to add additional debugging to rt2x00.
This will do a dump_stack for all important functions (add_interface, remove_interface, config() and config_interface())

It doesn't matter if this patch is on top of the previous patch or not.

Thanks,

Ivo

Attachments:

2009-03-16 13:22:34

by Antonio Marques

Subject: Re: rt2x00 mesh support

On Mar 15, 2009, at 13:45 , Ivo van Doorn wrote:
> On Sunday 15 March 2009, Antonio Marques wrote:
>> Upon further investigation, beaconing does not work after configuring
>> an interface in mesh point mode but running 'iwlist mesh scan'
>> triggers something in the driver that enables beaconing.
>> After executing this command beacons are generated and correctly
>> received at other nodes.
>
> Thats odd, but very interesting :)
> Could you enable debugfs and CONFIG_RT2X00_LIB_DEBUGFS and
> use the script from http://kernel.org/pub/linux/kernel/people/ivd/tools/rt2x00_regdump.sh
> to create a register dump before running 'iwlist mesh scan' and
> afterwards.
> (So basically when beaconing is broken and when it is working).
>
> Thanks,
>
> Ivo


As requested, I have attached the output of the script run before and
after
running 'iwlist mesh scan'. Unfortunately there seems to be no change in
the output. I have also included the queue statistics as these do
change from
one state to the next. Any further pointers to help debug this? I'll
gladly test
any patches that try to address this issue.

Antonio Marques


Before running 'iwlist mesh scan':

kernel: 2.6.29-rc7-wl
driver: rt73usb
version: 2.3.0
compiled: Mar 16 2009 11:53:37
dev_flags: 0x0000625f
rt chip: 1300
rf chip: 0002
revision: 0002573a

register base words wordsize
csr 12288 300 4
eeprom 0 128 2
bbp 0 128 1
rf 4 4 4


Queues:

qid count limit length index done crypto
14 0 24 1 1 0 0
0 0 24 0 0 0 0
1 0 24 0 0 0 0
2 6 24 0 6 6 0
3 0 24 0 0 0 0
16 0 4 0 0 0 0


After running 'iwlist mesh scan':

kernel: 2.6.29-rc7-wl
driver: rt73usb
version: 2.3.0
compiled: Mar 16 2009 11:53:37
dev_flags: 0x0000625f
rt chip: 1300
rf chip: 0002
revision: 0002573a

register base words wordsize
csr 12288 300 4
eeprom 0 128 2
bbp 0 128 1
rf 4 4 4

Queues:

qid count limit length index done crypto
14 0 24 8 8 0 0
0 11 24 0 11 11 0
1 0 24 0 0 0 0
2 6 24 0 6 6 0
3 0 24 0 0 0 0
16 0 4 0 0 0 0

2009-03-17 21:27:00

by Johannes Berg

Subject: Re: rt2x00 mesh support

On Tue, 2009-03-17 at 15:11 +0100, Johannes Berg wrote:

> > Thanks for the dumps, the reason why the beaconing isn't working
> > is (fortunately) very obvious from the registers point of view.
> > The "generate beacons" bit is simply not enabled. However the reason
> > why this bit has not been set escapes me. Could you apply the attached
> > patch? This will add extra debug messages to the driver to see when the
> > beacon generation bit is set.
>
> I think mac80211 is probably not requesting it until you scan -- since
> once you scan it calls ieee80211_if_config internally and changes that
> bit. Some mesh code needs to call ieee80211_if_config() with the beacon
> enable change flag.

Actually, it does, in ieee80211_start_mesh(). I have no idea then.

johannes

Attachments:

2009-03-17 22:04:17

by Ivo Van Doorn

Subject: Re: rt2x00 mesh support

On Tuesday 17 March 2009, Johannes Berg wrote:
> On Tue, 2009-03-17 at 22:50 +0100, Ivo van Doorn wrote:
>
> > >
> > > Actually, it does, in ieee80211_start_mesh(). I have no idea then.
> >
> > I understood that in normal master mode rt73usb doesn't scan either,
> > so my bet is that the bug is in rt2x00. :)
>
> But the bug seems to hit almost all other drivers too, which confuses
> me. I'd double-check that the _start_mesh() call actually goes through
> and a beacon is available at that point...

I think I found something interesting in the log from Antonio which does
suggest a mac80211 bug:


> [108565.280398] phy3 -> rt73usb_config_intf: Error - TXRX_CSR9 WRITE: 0x000d0000, READ: 0x000d0000
> [108565.385291] phy3 -> rt73usb_write_beacon: Error - TXRX_CSR9 WRITE: 0x00040000, READ: 0x00040000
> [108565.492687] phy3 -> rt73usb_kick_tx_queue: Error - TXRX_CSR9 WRITE: 0x001d0000, READ: 0x001d0000

These 3 commands mean that mac80211 has send the beacon data.

> [108565.603206] phy3 -> rt73usb_init_registers: Error - TXRX_CSR9 WRITE: 0x00000000, READ: 0x00000000

This command means that mac80211 uses the start() callback function. This triggers rt2x00 to initialize
the registers which resets the beacon generation.

So the problem seems to be that mac80211 first sends the beacon to the driver and then starts the interface
in which case I bet most drivers/hardware reset beacon generation. So now the driver will be waiting for
new beacons from mac80211 which probably won't provide that until a scan command is issued.

Ivo

2009-03-16 13:29:24

by Antonio Marques

Subject: Re: rt2x00 mesh support

On Mar 16, 2009, at 01:58 , Pat Erley wrote:
> I get identical behavior with the patch I'm about to RFC for ath9k
> to enable
> mesh mode. I just want to test that it works with my b43, rt61pci,
> and
> rt2x00usb devices. Of the 4, ONLY b43 enables beaconing for mesh
> mode on
> interface up. I suspect my ath5k one will exhibit similar
> behavior. I've
> reviewed the b43 code about 100 times during the writing of my patch
> for ath9k
> and I can't spot what it's doing that's so different.
>
> Pat

I have also tested with ath5k which behaves correctly on interface up by
enabling beaconing. You might want to look at it too.

Antonio Marques