1 Sep
2016
1 Sep
'16
9:51 a.m.
Hi!
We are affiliated with Aalto University and conducting research in the area of mobile
networks. We have been improving Amit Chawre's project
NwEPC<https://sourceforge.net/projects/nwepc/>c/>. I saw your implementation of the
GTP-U kernel module and I started to check If I could integrate it to this project.
I couldn't find any roadmap of the GTP-U in your website. Do you have any future plans
for it? I am interested in the following points:
- Creation, modification and removal of unidirectional tunnels, opposed to the
creation of both tunnels without possibility of modification. In the real EPC nodes, the
tunnels are never created at the same time. Also they can be removed due to the UE moving
to Idle state (i.e. GTP downlink between the eNB and the S-GW).
- Possibility to send End Marker and direct and indirect forwarding tunnels.
- The S-GW receive from a GTP endpoint and sends it to a different one. What
mechanisms do you have in mind to do this?
- Support of multiple EPS bearers for the same UE.
- Policy control, enforcement and statistics reporting (probably integrating it
with netfilter).
How can I contribute to this project. Should I work on the whole kernel tree? I have no
experience with kernel module development. If you want I could work on some API
modification proposals and designs.
Kind Regards,
Vicent Ferrer Guasch
PhD candidate
Networking Technology
Department of Communications and Networking
Aalto University
22 Sep
22 Sep
11:56 a.m.
Hi all,
If this is not the correct mailing list, please let me know.
Kind Regards,
Vicent
From: osmocom-net-gprs [mailto:osmocom-net-gprs-bounces@lists.osmocom.org] On Behalf Of
Ferrer Guasch Vicent
Sent: 1. syyskuuta 2016 10:52
To: osmocom-net-gprs ML <osmocom-net-gprs(a)lists.osmocom.org>
Cc: Llorente Santos Jesus <jesus.llorente.santos(a)aalto.fi>
Subject: GTP-u Kernel module
Hi!
We are affiliated with Aalto University and conducting research in the area of mobile
networks. We have been improving Amit Chawre's project NwEPC [1]. I saw your
implementation of the GTP-U kernel module and I started to check If I could integrate it
to this project.
I couldn't find any roadmap of the GTP-U in your website. Do you have any future plans
for it? I am interested in the following points:
- Creation, modification and removal of unidirectional tunnels, opposed to the creation of
both tunnels without possibility of modification. In the real EPC nodes, the tunnels are
never created at the same time. Also they can be removed due to the UE moving to Idle
state (i.e. GTP downlink between the eNB and the S-GW).
- Possibility to send End Marker and direct and indirect forwarding tunnels.
- The S-GW receive from a GTP endpoint and sends it to a different one. What mechanisms do
you have in mind to do this?
- Support of multiple EPS bearers for the same UE.
- Policy control, enforcement and statistics reporting (probably integrating it with
netfilter).
How can I contribute to this project. Should I work on the whole kernel tree? I have no
experience with kernel module development. If you want I could work on some API
modification proposals and designs.
Kind Regards,
Vicent Ferrer Guasch
PhD candidate
Networking Technology
Department of Communications and Networking
Aalto University
[1]: https://sourceforge.net/projects/nwepc/
2:41 p.m.
On 22 Sep 2016, at 11:56, Ferrer Guasch Vicent
<vicent.ferrerguasch(a)aalto.fi> wrote:
Hi all,
Hi,
If this is not the correct mailing list, please let me
know.
I think it is a good ml for the topic but you lost me on roadmap. It solves what it had to
solve and now it is a matter of scratching your own itch.
How can I contribute to this project. Should I work on
the whole kernel tree? I have no experience with kernel module development. If you want I
could work on some API modification proposals and designs.
I think after it hit the mainline kernel we don't have a formal process yet. Pablo,
what do you think. Should we host a linux git tree to collect changes that are then fed to
netdev, shall people contribute directly there?
holger
25 Sep
25 Sep
2:25 p.m.
Hi Holger and Vicent,
On Thu, Sep 22, 2016 at 02:41:02PM +0200, Holger Freyther wrote:
On my side, I have no plans to add what you need, so patches are very
welcome. I can help providing indications on how to get things done if
you have time to work on this. So I would suggest you fire at one
front at a time.
I would start by adding the assymmetric tunnel ID allocation that you
need, which should not be too complicated to add. You have to extend
the netlink interface that we have on gtp to support this.
I have just created a gtp specific kernel tree here:
http://git.kernel.org/cgit/linux/kernel/git/pablo/gtp.git/
more specifically, the GTP driver is at driver/net/gtp.c
You can submit patches based on that tree anytime. Please, read this
carefully:
https://www.kernel.org/doc/Documentation/SubmittingPatches
As I'll be taking your patches and submitting them to the Linux
networking kernel mailing list, I need that you make it in the right
way to reduce my maintainance burden here.
Thanks!
> On 22 Sep 2016, at 11:56, Ferrer Guasch Vicent
<vicent.ferrerguasch(a)aalto.fi> wrote:
[...]
If this is not the correct mailing list, please
let me know.
I think it is a good ml for the topic but you lost me on roadmap. It
solves what it had to solve and now it is a matter of scratching
your own itch. How can I
contribute to this project. Should I work on the whole
kernel tree? I have no experience with kernel module development.
If you want I could work on some API modification proposals and
designs.
I think after it hit the mainline kernel we don't have a formal
process yet. Pablo, what do you think. Should we host a linux git
tree to collect changes that are then fed to netdev, shall people
contribute directly there? 
22 Sep
22 Sep
2:48 p.m.
On Thu, Sep 22, 2016 at 09:56:05AM +0000, Ferrer Guasch Vicent wrote:
Hi all,
If this is not the correct mailing list, please let me know.
Kind Regards,
Vicent
Dear Vicent,
you have reached the correct mailing list. We always appreciate contributions.
The reason that you haven't got a reply yet is probably because those of us
that have read the mail simply don't know any better.
Please be patient and possibly bump this list again in a few days' time. I'm
sure you will get an answer eventually. Thanks!
~Neels
--
- Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/
=======================================================================
* sysmocom - systems for mobile communications GmbH
* Alt-Moabit 93
* 10559 Berlin, Germany
* Sitz / Registered office: Berlin, HRB 134158 B
* Geschäftsführer / Managing Directors: Harald Welte
2771
days inactive
2795
days old
osmocom-net-gprs@lists.osmocom.org
4 comments
4 participants
participants (4)
-
Ferrer Guasch Vicent -
Holger Freyther -
Neels Hofmeyr -
Pablo Neira Ayuso