b43 help,

b43 help,

[Cheng Renquan]

Today I was using this computer with boradcom4312 with b43 (for
14e4:4312) driver, in an environment there were 30~40 wifi hotspot,
some encrypted some not, all other win/mac can connect one unencrypted
wifi while my ubuntu 10.04 with this b43 driver cannot, all I know to
try is "modprobe -r b43" and "modprobe b43"; iwconfig/iwlist output
also seems good,

I post the pci data and dmesg log, in the hope of someone could
analyze and see how to improve, thanks;

# lspci -D -nn -vv -d 14e4:
0000:02:00.0 Network controller [0280]: Broadcom Corporation BCM4312
802.11b/g [14e4:4315] (rev 01)
	Subsystem: Hewlett-Packard Company Device [103c:1508]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 18
	Region 0: Memory@d8500000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: [40] Power Management version 3
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 PME-Enable- DSel=0 DScale=2 PME-
	Capabilities: [58] Vendor Specific Information <?>
	Capabilities: [e8] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
		Address: 0000000000000000  Data: 0000
	Capabilities: [d0] Express (v1) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
			ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0
<4us, L1 <64us
			ClockPM+ Suprise- LLActRep- BwNot-
		LnkCtl:	ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive-
BWMgmt- ABWMgmt-
	Capabilities: [100] Advanced Error Reporting <?>
	Capabilities: [13c] Virtual Channel <?>
	Capabilities: [160] Device Serial Number ff-ff-00-ff-ff-00-00-00
	Capabilities: [16c] Power Budgeting <?>
	Kernel driver in use: b43-pci-bridge
	Kernel modules: ssb

--
Cheng Renquan, Singapore

b43 help,

[Gábor Stefanik]

On Sat, Jul 31, 2010 at 7:56 AM, Cheng Renquan <crquan@gmail.com> wrote:
> Today I was using this computer with boradcom4312 with b43 (for
> 14e4:4312) driver, in an environment there were 30~40 wifi hotspot,
> some encrypted some not, all other win/mac can connect one unencrypted
> wifi while my ubuntu 10.04 with this b43 driver cannot, all I know to
> try is "modprobe -r b43" and "modprobe b43"; iwconfig/iwlist output
> also seems good,
>
> I post the pci data and dmesg log, in the hope of someone could
> analyze and see how to improve, thanks;
>
> # lspci -D -nn -vv -d 14e4:
> 0000:02:00.0 Network controller [0280]: Broadcom Corporation BCM4312
> 802.11b/g [14e4:4315] (rev 01)
> ? ? ? ?Subsystem: Hewlett-Packard Company Device [103c:1508]
> ? ? ? ?Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B- DisINTx-
> ? ? ? ?Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
> <TAbort- <MAbort- >SERR- <PERR- INTx-
> ? ? ? ?Latency: 0
> ? ? ? ?Interrupt: pin A routed to IRQ 18
> ? ? ? ?Region 0: Memory at d8500000 (64-bit, non-prefetchable) [size=16K]
> ? ? ? ?Capabilities: [40] Power Management version 3
> ? ? ? ? ? ? ? ?Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
> ? ? ? ? ? ? ? ?Status: D0 PME-Enable- DSel=0 DScale=2 PME-
> ? ? ? ?Capabilities: [58] Vendor Specific Information <?>
> ? ? ? ?Capabilities: [e8] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
> ? ? ? ? ? ? ? ?Address: 0000000000000000 ?Data: 0000
> ? ? ? ?Capabilities: [d0] Express (v1) Endpoint, MSI 00
> ? ? ? ? ? ? ? ?DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <4us, L1 unlimited
> ? ? ? ? ? ? ? ? ? ? ? ?ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
> ? ? ? ? ? ? ? ?DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
> ? ? ? ? ? ? ? ? ? ? ? ?RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
> ? ? ? ? ? ? ? ? ? ? ? ?MaxPayload 128 bytes, MaxReadReq 128 bytes
> ? ? ? ? ? ? ? ?DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
> ? ? ? ? ? ? ? ?LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0
> <4us, L1 <64us
> ? ? ? ? ? ? ? ? ? ? ? ?ClockPM+ Suprise- LLActRep- BwNot-
> ? ? ? ? ? ? ? ?LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
> ? ? ? ? ? ? ? ? ? ? ? ?ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
> ? ? ? ? ? ? ? ?LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive-
> BWMgmt- ABWMgmt-
> ? ? ? ?Capabilities: [100] Advanced Error Reporting <?>
> ? ? ? ?Capabilities: [13c] Virtual Channel <?>
> ? ? ? ?Capabilities: [160] Device Serial Number ff-ff-00-ff-ff-00-00-00
> ? ? ? ?Capabilities: [16c] Power Budgeting <?>
> ? ? ? ?Kernel driver in use: b43-pci-bridge
> ? ? ? ?Kernel modules: ssb
>
> --
> Cheng Renquan, Singapore
>
> _______________________________________________
> b43-dev mailing list
> b43-dev at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/b43-dev
>

This is a true BCM4312 (14E4:4315), not a 4311ABG (14E4:4312, commonly
called a "4312"), according to your lspci output. That means, you are
probably experiencing the DMA issue.

Try loading b43 with "modprobe b43 nohwcrypt=1 qos=0 pio=1". If this
doesn't fix it, then chances are, you are hitting a mac80211 bug.

-- 
Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)

b43 help,

[Cheng Renquan]

2010/7/31 G?bor Stefanik <netrolller.3d@gmail.com>:
> This is a true BCM4312 (14E4:4315), not a 4311ABG (14E4:4312, commonly
> called a "4312"), according to your lspci output. That means, you are
> probably experiencing the DMA issue.
>
> Try loading b43 with "modprobe b43 nohwcrypt=1 qos=0 pio=1". If this
> doesn't fix it, then chances are, you are hitting a mac80211 bug.
>
> --
> Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-)

In fact, I'm not often to go to that environment, so it's hard to reproduce;

Before that, I want to solve another problem inside my own campus,
with this b43 device,

in my campus, there are "SMUGIP" for guest network, it's a simple WiFi
spot without any encryption,
almost everyone wifi devices can connect it, but my linux with b43
cannot; it always scan and disconnect;

and there is a hidden wifi network named "WLAN-Staff", it uses
IEEE80211X encryption with PEAP,
and MSCHAPv2 authentication, should be logged in with username and password;

my another linux netbook with atheros wifi card can connect both,
especially, to connect that hidden and authentication required
network, I use this script:
# iwconfig ath0 essid "WLAN-Staff"
# wpa_supplicant -Dwext -iath0 -c /etc/wpa_supplicant.conf

with "/etc/wpa_supplicant.conf" content:
network={
  ssid="WLAN-Staff"
  key_mgmt="IEEE80211X"
  eap=PEAP
  phase2="autheap=MSCHAPv2"
  identity="username"
  password="password"
}

till now, my linux with this b43 driver actually can only connect to a
simple WEP encryption spot at home,
with some minor problems, I would rather to talk it later.

Someone know how to make this b43 to connect wifi at my campus? any
ideas I'd like to have a try,

thanks,

b43 help,

[Cheng Renquan]

the other linux netbook with atheros wifi card can connect the hidden
network, after connected it looks like:

# iwconfig ath0
Warning: Driver for device ath0 has been compiled with version 22
of Wireless Extension, while this program supports up to version 20.
Some things may be broken...

ath0      IEEE 802.11g  ESSID:"WLAN-Staff"  Nickname:""
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:13:19:8C:83:50
          Bit Rate:54 Mb/s   Tx-Power:31 dBm   Sensitivity=1/3
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XX [4]
Security mode:restricted
          Power Management:off
          Link Quality=94/94  Signal level=-1 dBm  Noise level=-95 dBm
          Rx invalid nwid:2717842  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

it has good link quality with "94/94", I've tried the same wpa
configuration on the linux with b43, it is always scanning, with no
results, and scanning; someone know how to make it work with this
hidden and auth-required wifi?

Thanks a lot,

b43 help,

[William Bourque]

Did you try the command Gabor gave you? ( "modprobe b43 nohwcrypt=1 
qos=0 pio=1" )

Assuming your kernel is recent enought, this should fix your problem.


On 03/08/10 11:02 PM, Cheng Renquan wrote:
> the other linux netbook with atheros wifi card can connect the hidden
> network, after connected it looks like:
>
> # iwconfig ath0
> Warning: Driver for device ath0 has been compiled with version 22
> of Wireless Extension, while this program supports up to version 20.
> Some things may be broken...
>
> ath0      IEEE 802.11g  ESSID:"WLAN-Staff"  Nickname:""
>            Mode:Managed  Frequency:2.462 GHz  Access Point: 00:13:19:8C:83:50
>            Bit Rate:54 Mb/s   Tx-Power:31 dBm   Sensitivity=1/3
>            Retry:off   RTS thr:off   Fragment thr:off
>            Encryption key:XXXX-XXXX-XXXX-XXXX-XXXX-XXXX-XX [4]
> Security mode:restricted
>            Power Management:off
>            Link Quality=94/94  Signal level=-1 dBm  Noise level=-95 dBm
>            Rx invalid nwid:2717842  Rx invalid crypt:0  Rx invalid frag:0
>            Tx excessive retries:0  Invalid misc:0   Missed beacon:0
>
> it has good link quality with "94/94", I've tried the same wpa
> configuration on the linux with b43, it is always scanning, with no
> results, and scanning; someone know how to make it work with this
> hidden and auth-required wifi?
>
> Thanks a lot,
>
> _______________________________________________
> b43-dev mailing list
> b43-dev at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/b43-dev

b43 help,

[Cheng Renquan]

On Thu, Aug 5, 2010 at 12:08 AM, William Bourque
<william.bourque@polymtl.ca> wrote:
>
> Did you try the command Gabor gave you? ( "modprobe b43 nohwcrypt=1 qos=0
> pio=1" )
>
> Assuming your kernel is recent enought, this should fix your problem.

Got it! with these parameters it really works! the kernel is ubuntu
10.04 default 2.6.32-23-generic-pae,

Then these parameters mean the haredware crypto functions cannot be utilized,
all encrypt/decrypt calculations are using the main CPU, right?

Then our remaining job is still to figure out how to make it work with
enabling these
parameters; without released documents from Broadcom, we can only do
reverse engineering?
from where to start? although maybe not an easy task, but I'd like a try;

2010/8/5 G?bor Stefanik <netrolller.3d@gmail.com>:
> I see you are using Madwifi for the atheros card. Please test with
> ath5k in the same kernel that is experiencing problems in b43 - this
> will reveal whether the problem is in b43 or mac80211.

Sorry, that linux netbook with atheros is using linux 2.6.21.7, really
old kernel
I cannot update software on it because its storage is very limited, I
cannot even
install a compiler on it;
(in fact, it's EeePC 701, the very first model, with Intel Celeron 900 MB,
and only 4 GB SSD storage,)

--
Cheng Renquan (???), from Singapore