rtl8192* wifi driver

rtl8192* wifi driver

[Roman Krylov]

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Hi kernel developers!
I have a USB wifi adapter from Reltek (0bda:8176).
I had 2.6.38 kernel and tried to install the driver provided by realtek - by 
their support I was suggested to use 8192cu. It did not compile due to 
discontinued support of explicit mutexes in newer kernels.
I changed it using instructions I've found on the internet, compiled and it 
worked well.
Now in the linux kernel 3.0.1 I have found rtl8192* drivers in the kernel source 
tree which I included in the install, but they did not work, though modules 
loaded without error.
Then I took my cranked realtek driver for 2.6.38 and this time I had to remove 
the #include <linux/smp_lock.h> to compile it and it works again.

The question is: can someone take care of importing this driver into the kernel 
tree and support it?
Let the name be something like 'rtl8192cu_usb' to distinguish from others.

Thanks in advance,
Roman.

P.S. Please reply to me, or CC me, cause I am not subscribed to the mailing list 
yet.

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Re: rtl8192* wifi driver

[Larry Finger]

On 08/12/2011 05:30 PM, Roman Krylov wrote:
> Hi kernel developers!
> I have a USB wifi adapter from Reltek (0bda:8176).
> I had 2.6.38 kernel and tried to install the driver provided by realtek - by
> their support I was suggested to use 8192cu. It did not compile due to
> discontinued support of explicit mutexes in newer kernels.
> I changed it using instructions I've found on the internet, compiled and it
> worked well.
> Now in the linux kernel 3.0.1 I have found rtl8192* drivers in the kernel source
> tree which I included in the install, but they did not work, though modules
> loaded without error.
> Then I took my cranked realtek driver for 2.6.38 and this time I had to remove
> the #include <linux/smp_lock.h> to compile it and it works again.
>
> The question is: can someone take care of importing this driver into the kernel
> tree and support it?
> Let the name be something like 'rtl8192cu_usb' to distinguish from others.

The driver rtl8192cu, which supports your device, has been in the kernel since 
2.6.39. It is well integrated with the other Realtek 802.11n devices and drivers 
(rtl8192ce, rtl8192se, and rtl8192de).

Driver rtl8192cu works here. What failed with your system? Did you install the 
firmware? Check the output of the dmesg command.

The driver you posted does not use mac80211, but implements its own 802.11 
stack. Such drivers are admitted to the staging directories under certain 
circumstances; however, not if they duplicate USB IDs for a mainline driver.

I unpacked your driver and tried to compile it under 3.1-rc1. It failed with

make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/3.1.0-rc1-wl+/build 
M=/home/finger/realtek/my_rtl8192CU_linux3.x  modules
make[1]: Entering directory `/home/finger/wireless-testing-new'
   CC [M]  /home/finger/realtek/my_rtl8192CU_linux3.x/core/rtw_cmd.o
In file included from 
/home/finger/realtek/my_rtl8192CU_linux3.x/include/drv_types.h:80:0,
                  from /home/finger/realtek/my_rtl8192CU_linux3.x/core/rtw_cmd.c:24:
/home/finger/realtek/my_rtl8192CU_linux3.x/include/rtw_xmit.h:343:24: error: 
field ‘xmit_tasklet’ has incomplete type
In file included from 
/home/finger/realtek/my_rtl8192CU_linux3.x/include/drv_types.h:81:0,
                  from /home/finger/realtek/my_rtl8192CU_linux3.x/core/rtw_cmd.c:24:
/home/finger/realtek/my_rtl8192CU_linux3.x/include/rtw_recv.h:217:24: error: 
field ‘recv_tasklet’ has incomplete type
make[2]: *** [/home/finger/realtek/my_rtl8192CU_linux3.x/core/rtw_cmd.o] Error 1
make[1]: *** [_module_/home/finger/realtek/my_rtl8192CU_linux3.x] Error 2

You really need to find out why rtl8192cu does not work.

Larry

Re: rtl8192* wifi driver

[Larry Finger]

On 08/12/2011 08:41 PM, Roman Krylov wrote:
> Hi Larry,
> I can't figure out why this happens, this is what I see in dmesg with the
> drivers supplied with the kernel:
>
> rtl8192cu 1-6:1.0: usb_probe_interface
> rtl8192cu 1-6:1.0: usb_probe_interface - got id
> rtl8192cu: MAC address: 00:08:a1:ca:6a:33
> rtl8192cu: Board Type 0
> rtl8192cu: rx_max_size 15360, rx_urb_num 8, in_ep 1
> ieee80211 phy1: Selected rate control algorithm 'rtl_rc'
> drivers/usb/core/inode.c: creating file '004'
> hub 1-0:1.0: state 7 ports 8 chg 0000 evt 0040
> udev: renamed network interface wlan0 to wlan3
> rtl8192cu: MAC auto ON okay!
> rtl8192cu: Tx queue select: 0x05
> rtl8192c: Loading firmware file rtlwifi/rtl8192cufw.bin
> ADDRCONF(NETDEV_UP): wlan3: link is not ready
>
> Though I can see the list of networks in NetworkManager, but I cannot connect to
> any of these networks.
> So I'm stuck with what I have.
> It probably did not compile on your computer because you were cross-compiling.
> Thanks,

Do NOT drop the mailing list. ALWAYS Reply All. I do not do private debugging 
unless you are paying!

The dmesg fragment showed no reason for a failure to even try to connect. On my 
system, I get

[24756.876119] usb 1-2: new high speed USB device number 7 using ehci_hcd
[24757.467946] rtl8192cu: MAC address: 00:1f:1f:c8:8e:cb
[24757.467968] rtl8192cu: Board Type 0
[24757.507037] rtlwifi: rx_max_size 15360, rx_urb_num 8, in_ep 1
[24757.510400] ieee80211 phy5: Selected rate control algorithm 'rtl_rc'
[24757.520562] usbcore: registered new interface driver rtl8192cu
[24757.605980] udev[1038]: renamed network interface wlan0 to wlan5
[24757.693068] rtl8192cu: MAC auto ON okay!
[24757.776251] rtl8192cu: Tx queue select: 0x05
[24757.780586] rtl8192c_common: Loading firmware file rtlwifi/rtl8192cufw.bin
[24758.527878] ADDRCONF(NETDEV_UP): wlan5: link is not ready
[24761.249067] wlan5: authenticate with c0:3f:0e:be:2b:44 (try 1)
[24761.254431] wlan5: authenticated
[24761.254540] wlan5: associate with c0:3f:0e:be:2b:44 (try 1)
[24761.266899] wlan5: RX AssocResp from c0:3f:0e:be:2b:44 (capab=0x411 status=0 
aid=2)
[24761.266912] wlan5: associated
[24761.289844] ADDRCONF(NETDEV_CHANGE): wlan5: link becomes ready

It looks exactly like your output through the "link is not ready" message. At 
that point, NetworkManager starts the authentication process.

What do you see in the NM log file? It should be at /var/log/NetworkManager?

I would also like to see the output of the 'iwlist scan' command when run as root.

Larry

Re: rtl8192* wifi driver

[Roman Krylov]

> What do you see in the NM log file? It should be at /var/log/NetworkManager?
>
> I would also like to see the output of the 'iwlist scan' command when run as 
> root.
>
> Larry
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Activation (wlan3/wireless): 
connection 'Auto bhn 310' has security, and secrets exist.  No new secrets needed.
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'ssid' value 'bhn 310'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'scan_ssid' value '1'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'key_mgmt' value 
'NONE'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'auth_alg' value 
'OPEN'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'wep_key0' value 
'<omitted>'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'wep_key1' value 
'<omitted>'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: added 'wep_tx_keyidx' 
value '0'
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Activation (wlan3) Stage 2 of 5 
(Device Configure) complete.
Aug 12 21:26:11 volyrkr NetworkManager: <info>  Config: set interface ap_scan to 1
Aug 12 21:26:11 volyrkr NetworkManager: <info>  (wlan3): supplicant connection 
state:  inactive -> scanning
Aug 12 21:26:36 volyrkr NetworkManager: <info>  Activation (wlan3/wireless): 
association took too long.
Aug 12 21:26:36 volyrkr NetworkManager: <info>  (wlan3): device state change: 5 
-> 9 (reason 7)
Aug 12 21:26:36 volyrkr NetworkManager: <info>  Activation (wlan3) failed for 
access point (bhn 310)

Roman.

Re: rtl8192* wifi driver

[Larry Finger]

On 08/12/2011 10:07 PM, Roman Krylov wrote:
>
>> What do you see in the NM log file? It should be at /var/log/NetworkManager?
>>
>> I would also like to see the output of the 'iwlist scan' command when run as
>> root.
>>
>> Larry
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Activation (wlan3/wireless):
> connection 'Auto bhn 310' has security, and secrets exist. No new secrets needed.
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'ssid' value 'bhn 310'

What is your ESSID? Two lines up, I see 'Auto bhn 310' and one line up I see 
'bhn 310'. Based on my logs, those two should be the same. I'll set one of my 
APs to the first ESSID and see if I can connect.

I found the problem in the driver you sent. One needs to add

#include <linux/interrupt.h>

to file include/osdep_service.h. Once I did that, it built and works.

Larry

Re: rtl8192* wifi driver

[Roman Krylov]

> What is your ESSID? Two lines up, I see 'Auto bhn 310' and one line up I see 
> 'bhn 310'. Based on my logs, those two should be the same. I'll set one of my 
> APs to the first ESSID and see if I can connect.
The first one 'Auto bhn 310' is NetworkManager's alias, the essid is 'bhn 310'.
> I found the problem in the driver you sent. One needs to add
>
> #include <linux/interrupt.h>
>
> to file include/osdep_service.h. Once I did that, it built and works.
This is probably due some changes in 3.1 since 3.0.1.

Re: rtl8192* wifi driver

[Larry Finger]

On 08/12/2011 10:07 PM, Roman Krylov wrote:
>
>> What do you see in the NM log file? It should be at /var/log/NetworkManager?
>>
>> I would also like to see the output of the 'iwlist scan' command when run as
>> root.
>>
>> Larry
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Activation (wlan3/wireless):
> connection 'Auto bhn 310' has security, and secrets exist. No new secrets needed.
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'ssid' value 'bhn 310'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'scan_ssid' value '1'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'key_mgmt' value
> 'NONE'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'auth_alg' value
> 'OPEN'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'wep_key0' value
> '<omitted>'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'wep_key1' value
> '<omitted>'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: added 'wep_tx_keyidx'
> value '0'
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Activation (wlan3) Stage 2 of 5
> (Device Configure) complete.
> Aug 12 21:26:11 volyrkr NetworkManager: <info> Config: set interface ap_scan to 1
> Aug 12 21:26:11 volyrkr NetworkManager: <info> (wlan3): supplicant connection
> state: inactive -> scanning
> Aug 12 21:26:36 volyrkr NetworkManager: <info> Activation (wlan3/wireless):
> association took too long.
> Aug 12 21:26:36 volyrkr NetworkManager: <info> (wlan3): device state change: 5
> -> 9 (reason 7)
> Aug 12 21:26:36 volyrkr NetworkManager: <info> Activation (wlan3) failed for
> access point (bhn 310)

It worked here:

Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Activation 
(wlan5/wireless): connection 'Auto bhn 310' has security, and secrets exist.  No 
new secrets
  needed.
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Config: added 'ssid' value 
'Auto bhn 310'
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Config: added 'scan_ssid' 
value '1'
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Config: added 'key_mgmt' 
value 'NONE'
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Config: added 'wep_key0' 
value '<omitted>'
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Config: added 
'wep_tx_keyidx' value '0'
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Activation (wlan5) Stage 2 
of 5 (Device Configure) complete.
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> Config: set interface 
ap_scan to 1
Aug 12 22:35:15 larrylap NetworkManager[3258]: <info> (wlan5): supplicant 
connection state:  disconnected -> scanning
Aug 12 22:35:16 larrylap NetworkManager[3258]: <info> (wlan5): supplicant 
connection state:  scanning -> associating
Aug 12 22:35:16 larrylap NetworkManager[3258]: <info> (wlan5): supplicant 
connection state:  associating -> associated
Aug 12 22:35:16 larrylap NetworkManager[3258]: <info> (wlan5): supplicant 
connection state:  associated -> completed
Aug 12 22:35:16 larrylap NetworkManager[3258]: <info> Activation 
(wlan5/wireless) Stage 2 of 5 (Device Configure) successful.  Connected to 
wireless network 'Auto bhn 310'.

Something is wrong with your configuration. I suggest killing the connection in 
NM and remake it. Do you use KDE or Gnome? My tests were with KDE.

Larry