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[Info/brainstorming] Compiling modules for the 2.6.32 beta kernel OBSOLETE

This thread is now obsolete.
Kernel sources for build 5.26.0 have been released:
https://opensource.motorola.com/sf/go/projects.milestone/frs.milestone_source_froyo
I've pushed some new pre-compiled modules to github, though beware, I haven't had time to test all of them on device yet:
https://github.com/nadlabak/android...mmit/b300803348705d3fc5ce76d8c88d57186748a370
As the kernel sources are not yet available from the Motorola's open source project, here is an outline how I compiled the overclock and cpufreq governor modules. (Btw., the overclock module needed a substantial adaptation, see the source here: http://android.doshaska.net/2.6.32oc )
I'm using the sources from this AOSP repo:
Code:
git clone git://android.git.kernel.org/kernel/omap.git
git checkout --track -b android-omap-2.6.32 origin/android-omap-2.6.32
Use the sholes config:
Code:
make sholes_defconfig
flags that need to be disabled:
CONFIG_LOCALVERSION_AUTO
CONFIG_MODVERSIONS
CONFIG_DEBUG_MUTEXES
CONFIG_SCHEDSTATS
CONFIG_SCHED_DEBUG
[updated on 17.01.2011, thanks go to Skrilax_CZ]
At least the ext2 will work without panics when compiled using this config.
For tun, cifs and nfs there is still some additional config mismatch that prevents the modules to work without null pointer dereference oops.
Also, even when no custom kernel module is used, you can get the kernel panic very easily, try to enable wifi and do:
Code:
cat /proc/kallsyms
If you're interested in a more detailed android kernel compilation guide, you can e.g. roughly follow this Droid kernel guide: http://www.droidforums.net/forum/rescue-squad-guides/31452-how-compile-your-own-kernel.html

Thanks for starting this thread kabaldan! It is a great starting point in tackling the issue of adding tun support to the new kernel (tun.ko module). I am not as good as many others in this, but trying won't hurt. Meanwhile if someone else is working on tun support - share experience here!

If kernel seems to be ok, sometimes mounting with new version of busybox won't work.
I used to get kernel panic when use newer version of busybox (not Android kernel but my own embedded linux)

Hey Nadlabak can you add DLNA function of CM6?

same problem using droidx kernel sources. insmod ok, mount reboots the phone
yantz

I tried droid2 kernel module - doesn't work either
I noticed OpenVPN included in CM6 also relies on this kernel module. Hence doesn't work. I guess we won't (ever) see kernel sources for that leaked kernel we are now using. I assume Motorola will release the sources sooner or later, but not before official Froyo layout. The waiting is killing me! kabaldan, can't you try to do some magic as you did with the overclock module? The beer is from me!!!

Can you test this attached tun.ko?
Insmod is OK, but I currently don't have time for any further tests...
EDIT: don't bother, kernel panic as usual

Module loads fine, but when attempt to use it, phone reboots, just like with the module compiled from DroidX sources..

leobg said:
Module loads fine, but when attempt to use it, phone reboots, just like with the module compiled from DroidX sources..
Click to expand...
Click to collapse
So, I got it loaded - insmod works just great, just like it did on the 2.1 kernel.
I'm trying to use the CM6 built-in OVPN settings, but I can't find any documentation on the setup. How did you get it set up?
I have
/sdcard/openvpn/
cert.crt
ca.crt
config.conf
config.ovpn
pem.key
I realize that config.conf and config.ovpn are the same file- but I use this VPN on windows and on Mac, and I wasn't sure the requirements on Linux.
If I can't find some documentation I'll try downloading the OpenVPN settings app from the market and playing with that.
Also, I don't know if it's true or not, but I heard the Milestone2 source compiled driver could work.

Are you trying the module kabaldan provided? It doesn't seem to work, at least for me. Loads fine, but phone crashes when setting up tun interface. I couldn't get OpenVPN in CM6 0.3 to work so far. I am testing the tun.ko with the cisco vpn package (which worked great on the old kernel with CM6 0.2) vpnc. When I initiate the connection, phone reboots if the attached here tun.ko is used. I also tried with tun.ko compiled from DroidX sources - same thing - phone reboots. I am not sure where did kabaldan take/compile this module from.
Sent from my Milestone using Tapatalk

I was using the same one, I was thinking maybe he could use the info from more than one phone. I'll try get-a-robot or OpenVPN Installer, but I won't hold my breathe. I was just hoping to use the built-in functionality of the ROM.
*edit* Just saw he removed it because it doesn't work yet, oh well.

the kernel doesnt seem to like any other fs not built into it. i've tried several, ext2, ext3, ext4, cifs, jffs, reiserfs etc. all modules would load without a problem but system will reboot during mount. heck i even tried creating logical volume on the partition. volume created fine, but when time to mount, it reboot
i ended up using a 2nd vfat partition for apps2vfat, on top of native froyo move to sd. moved my debian arm there and manually, yes manually, replace many symlinks in libs to copied files
hopefully next froyo release for other regions would provide a different kernel
yantz

hey kabaldan wondering if you've had another chance to look at an updated tun.ko

Finally some breakthrough. The great Skrilax_CZ has made some hard debugging and one very good guess:
CONFIG_DEBUG_MUTEXES must be disabled in the kernel config.
At least the ext2 module compiled this way is working without panics now.
Congrats to Skrilax!
EDIT: Tun nor nfs not tested yet..., cifs unfortunately still not working.

kabaldan said:
Finally some breakthrough. The great Skrilax_CZ has made some hard debugging and one very good guess:
CONFIG_DEBUG_MUTEXES must be disabled in the kernel config.
At least the ext2 module compiled this way is working without panics now.
Congrats to Skrilax!
EDIT: Tun nor nfs not tested yet..., cifs unfortunately still not working.
Click to expand...
Click to collapse
This means that now the app2ext work?
Where are the modules for we test?!
Thanks for the news!

Modules for testing:
ext2 - http://code.google.com/p/cyanogenmod4milestone/issues/detail?id=197#c19
tun - http://code.google.com/p/cyanogenmod4milestone/issues/detail?id=222#c4

Hi sort of a newbie here... So does this mean that data2ext will work?
Sent from my Milestone using XDA App

Hi Nadlabak...maybe you already know.
For the cifs module, how about slow-work is made available as a module.
as is done at this link
http://forum.xda-developers.com/showpost.php?p=9271775&postcount=4

after further testing:
ext2 mounting now works, reading from ext2 partition too, but writing still causes panic
tun causes panic too
Let's hope for a soon kernel source release, as it looks like we won't get much further without it.
edowar: thanks for the link

@kabaldan
Could it be possible to create a swap module for milestone ?
It seems that running kernels does not have this feature yet and i'm not sure motorola to implement it for next 2.2 release so .... well just wondering !

[Q] cifs on Vegan-Tab 5.1

Hi,
I am dying to get connected to my NAS server which has all my video/music.
Does anyone know how to make CifsManager work on Vegan-Tab 5.1?
I tried to mount my NAS share but CifsManager kept saying "Cannot access a needed share library". (is it the cifs.ko?)
Vegan-Tab 5.1 listed:
* CIFS support (allows mounting shared folders over a network) – search CIFS in the android market for apps
Does that mean I have cifs.ko in kernal already? If not, how can I get it?
Thanks in advance.

http://forum.xda-developers.com/showthread.php?t=895825
This kernel definitely has cifs support

chuugokujin said:
Hi,
I am dying to get connected to my NAS server which has all my video/music.
Does anyone know how to make CifsManager work on Vegan-Tab 5.1?
I tried to mount my NAS share but CifsManager kept saying "Cannot access a needed share library". (is it the cifs.ko?)
Vegan-Tab 5.1 listed:
* CIFS support (allows mounting shared folders over a network) – search CIFS in the android market for apps
Does that mean I have cifs.ko in kernal already? If not, how can I get it?
Thanks in advance.
Click to expand...
Click to collapse
I thought it was compiled into the kernel packaged with Vegan 5.1 beta. Is it possible you flashed an alternate kernel/boot image that doesn't have CIFS support?
If in doubt, maybe try flashing Clemsyn's kernel, where I know it's baked in.
It's in pershoot's kernel but I think CIFS support is modular there, which means you need to install the modules as well if you use that kernel.

thebadfrog said:
http://forum.xda-developers.com/showthread.php?t=895825
This kernel definitely has cifs support
Click to expand...
Click to collapse
Yes, it does. I am using it at home on Windows 7 PC's.

I concur. The default kernel for Vegan has CIFS support. I use it + Rockplayer to stream all kinds of movies and videos to my tablet.

[Q] Howto mount NFS

I'm looking for NFS support on my SGT (Network file system, NOT the game...).
Tab has been rooted, running Paul's MoDaCo kernel & rom (amazing BTW), busybox and what not.
At home I'm running Ubuntu workstations and servers and know my way around linux.
However, I can't figure out how to mount my Tab to my NFS shares.
I've tried CIFS manager, ES filemanager and Mount manager, all without success. It seems to me I might be missing the correct modules. So the question is; is NFS supported in the first place? And if so, what am I overlooking?
(and could someone please post in the Modaco Kernel thread, as I don't have permission to post in dev-threads untill I spam at least 10 posts...)
[EDIT 2011-02-01]
Paul has indicated he might include NFS support in R4 of his kernel, no support in R3.

Hi
Editing post as I saw you are already on MoDaco's ROM.
Not sure about NFS but you mentioned Ubuntu..meaning you should have no trouble getting your samba server running.
With samba and MoDaCo custom Kernel you just need to pull down its "kernel modules.zip" It's a separate file containing the cifs.ko module.
Use CIFS manager (download from market) and specify where you extracted the module to (/sdcard/cifs or anywhere you want to place it).
Once cifs manager is able to load the cifs.ko module, you should be able to mount the shares

@bullyfrog Using the smb server and the cifs.ko modules is an alternative indeed, and for the time being a suitable workaround. Thank you for this tip. However, it's not what I was hoping on...
BTW NFS support will be included in next kernel, so hopefully by that time I've figured it out and will post as a Howto...

[Q] tun.ko for Xoom 3.2?

Hi!
I would like to establish a Cisco IPSEC-connection with my Xoom, using get-a-robot-vpnc. The problem is that I'm missing a tun-kernel-module and can't find one for the xoom on the web
Does anyone have one for the Xoom WiFi only running 3.2 (Build HTJ85B) with stock kernel?
Thanks!
McDV

Pulled this out of the EU32Update file, not sure if its what youre looking for??

Questions and requests belong in Q&A. Thread moved.

tonyb15re said:
Pulled this out of the EU32Update file, not sure if its what youre looking for??
Click to expand...
Click to collapse
Thanks, I tried this but it looks like it's only for that ROM.
Maybe someone else has a tun-kernel-module for the stock 3.2?!
Greetings
McDV

yup, I'd like to see this too..

Just instal tiamat kernel 2.1 it contains tun.ko and several other modules.
http://forum.xda-developers.com/showthread.php?t=1200063
also you need to use this modified vpn connections
http://forum.xda-developers.com/showpost.php?p=12124163&postcount=23

Here is tun.ko for 3.2 stock.

wonderful! many, many thanks.

hi,
Will this work on 3.2.1? I copied it /system/lib/modules but when I try to openvpn I get cannot allocate tun/tap dev dynamically.
Is this just a bad file for 3.2.1 or am I missing something else?
I did install busybox and openvpn.
Thanks,

Your tun.ko kernel module needs to be compiled specifically against your kernel source. I don't work with stock anymore, however the developer kernel now floating on xda have this module specifically rolled into their kernels. You would have to root however to install these kernels.

Thanks Kevdog..
I searched and i couldn't find any for 3.2.1. I am the rooted stock 3.2.1 already downloaded from xda. Just need to tun.ko for 3.2.1.
If u know where to find, please send me the link.
Thanks.

Ok 3.2.1 -- Stock or Rooted? What kernel are you running?

I got my rom from this thread
http://forum.xda-developers.com/showthread.php?t=1278214
Thanks,

Ok -- I know this is a lot of work, however I tried it myself and I'm not sure if the rom you linked to is corrupted or my download process failed. (***Rant -- why all the developers who put out files don't match the file to an md5 sum so us users can verify the integrity of the dowload -- I'll never know!!), but I can't seem to extract your system.img. You'll need a tool such as unyaffs to unpack the system.img and then search around in the modules folder until you find the tun.ko. Or you could just flash a Tiamat 3.2.1 kernel which has these modules built in!!

I checked checksum and it was correct before I installed it. Not sure what u mean, I thought this rom doesn't have it period.
I also tried to use tiamat 2.2 which says its for 3.2 but it got stuck at boot for 30 minutes at the honeycomb screen. I thought maybe tiamat ker
Net doesn't support 3.2.1 yet.
http://forum.xda-developers.com/showthread.php?t=1200063
As far as i know this is latest. Doesn't mention 3.2.1. Didn't work for me.
I don't want to go to tiamat rom to avoid a full rebuild.

[Q] Q: Cifs.ko module for tf101 ICS kernel?

I just installed ICS and it works fine. I never expected it to work as well as it does, but now I can get down to griping about little things that I use that don't yet work
Normally I use CIFS (Common Internet File System, like Samba was before) to access shares on the net. This worked fine on HoneyComb because I built my own kernel modules.
For ICS, I think the source is not yet released for the kernel. I did see that there was a tun.ko and cifs.ko for ICS over in the transformer prime section of XDA, so I tried those out but it appears the tegra 3 kernel is too different for these to work. (although I think the version is the same).
If anyone has seen or has a working cifs.ko module I'd appreciate getting ahold of it (or especially the ICS kernel source code).
Thanks -

I don't know about cifs.ko as I don't use it, but I do use OpenVPN and found out that tun is part of ICS now, you no longer need a separate module.

hachamacha said:
I just installed ICS and it works fine. I never expected it to work as well as it does, but now I can get down to griping about little things that I use that don't yet work
Normally I use CIFS (Common Internet File System, like Samba was before) to access shares on the net. This worked fine on HoneyComb because I built my own kernel modules.
For ICS, I think the source is not yet released for the kernel. I did see that there was a tun.ko and cifs.ko for ICS over in the transformer prime section of XDA, so I tried those out but it appears the tegra 3 kernel is too different for these to work. (although I think the version is the same).
If anyone has seen or has a working cifs.ko module I'd appreciate getting ahold of it (or especially the ICS kernel source code).
Thanks -
Click to expand...
Click to collapse
I didn't have much success with tun and cifs for my purpose which was to wirelessly access the sd card of the phone/tablet vice versa until I used the Samba app fom the market. In combination with Ghost commander and after upgrading to ICS everything was intact. Not sure if this is helpful to you or not. Just throwin it out there.

Thanks both of you -
I realized that tun was there but thanks. As for cifs, I suppose the module isn't really needed except to use certain utils that rely on it, like root explorer.
I found a number of samba/cifs compatible file managers that're fine for me like ES explorer etc.
Those will be fine and I'll look forward to getting kernel source for ICS anyway.

hachamacha said:
Thanks both of you -
I realized that tun was there but thanks. As for cifs, I suppose the module isn't really needed except to use certain utils that rely on it, like root explorer.
Click to expand...
Click to collapse
I've just rooted my TF101 (ICS) so that I could get Junos pulse working with its ssl vpn. Doing a bit of reading I found I needed tun.ko (at least with 3.2). That automatic tun.ko installer from the market reports that tun.ko is installed (compiled into the kernel?)
I can see the tun0 created, with an IP address. But it doesn't work, not a single bit travels the tunnel interface.
I'm officially confused...

Still too few posts under this account name to be able to post links, but have you seen this thread in Dev?
xpad / cifs modules for stock kernel ICS v9.2.1.11

Thanks for that... that confirms tun.ko is built in, which doesn't help me find/fix my problem.
Will keep at it!