From nhofmeyr at sysmocom.de  Thu Dec  6 10:54:52 2018
From: nhofmeyr at sysmocom.de (Neels Hofmeyr)
Date: Thu, 6 Dec 2018 11:54:52 +0100
Subject: [BUG][OSMO-PCU][OSMO-SGSN] GPRS and EGPRS attach procedure is
 not working with Kirin Modem phones
In-Reply-To: <d6e660d42989420ab8fe3f0c270836d0@BLR-EXCHANGE.octasictechnologies.com>
References: <d6e660d42989420ab8fe3f0c270836d0@BLR-EXCHANGE.octasictechnologies.com>
Message-ID: <20181206105452.GA1700@my.box>

Hi Bipin Jaiswal,

thanks for the report.

Have you verified correct configuration of OsmoSGSN, with a different phone?
(It sounds a bit like some setting might mismatch, like PLMN...)

It would be excellent if you could create a bug report on osmocom.org, and
attach network trace pcaps and full logging to that report. Also explain
whether it is always reproducable or sporadic. Thanks!

> Please look into this issue or let us know if we have fix for this issue.

This is an Open Source community that lives by contribution.

If you require timely support, you can book it from a professional support
vendor (e.g. my employer), which then also contributes back to the Osmocom
community.

~N

-- 
- Neels Hofmeyr <nhofmeyr at 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
* Gesch?ftsf?hrer / Managing Directors: Harald Welte
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From pespin at sysmocom.de  Thu Dec  6 11:46:47 2018
From: pespin at sysmocom.de (Pau Espin Pedrol)
Date: Thu, 6 Dec 2018 12:46:47 +0100
Subject: Can you tell me how to compile and install libgtpnl?
In-Reply-To: <2e29f776.12601.166c96046cc.Coremail.a4651386@163.com>
References: <2e29f776.12601.166c96046cc.Coremail.a4651386@163.com>
Message-ID: <327db2a7-78f0-47b8-61e0-d8291d0b96cd@sysmocom.de>

Hi,

nothing special as far as I know. You can find related information here:
https://osmocom.org/projects/linux-kernel-gtp-u/wiki/Libgtpnl


-- 
- Pau Espin Pedrol <pespin at 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
* Geschaeftsfuehrer / Managing Director: Harald Welte


From michael.siuda at gmail.com  Fri Dec  7 18:57:14 2018
From: michael.siuda at gmail.com (=?UTF-8?Q?Micha=C5=82_Siuda?=)
Date: Fri, 7 Dec 2018 18:57:14 +0000
Subject: Question about basic usage of GTP kernel module
Message-ID: <CAGEExfmUgPmUNYzekLc4trBB1hYevATyd-_MgdThxfY7HN3F_g@mail.gmail.com>

Hi,

I'm trying to build a simple node that would encap/decap between IP and GTP
in the user plane. For this I have been using gtp-link and gtp-tunnel tools
of the libgtpnl, but with no luck so far. Could anyone please review my
setup and let me know what I'm doing wrong?

Topology:
node1 - DUT, I would like to be able to send a ping from this node such
that it is encapsulated into GTP tunnel towards node2.
2 interfaces:
- ens6 - represents interface towards MS, has address 20.1.1.1/24
- ens7 - represents interface towards GGSN, has address 10.1.1.1/24

node2
Just a single interface towards node1, address 10.1.1.2/24

Test:
On node2, I'm following these steps:
- creating a GTP device:
# ./gtp-link add gtp-u
- adding a GTP tunnel:
# ./gtp-tunnel add gtp-u v1 20 10 20.1.1.1 10.1.1.2
# ./gtp-tunnel list
version 1 tei 20/10 ms_addr 20.1.1.1 sgsn_addr 10.1.1.2
- adding a route to an address representing APN to use the GTP device:
# ip route add 8.8.8.8 src 20.1.1.1 dev gtp-u
- Trying to ping 8.8.8.8

Result:
I was expecting to see ECMP packets to 8.8.8.8 to be sent out via ens7
towards node2 and encapsulated in GTP. However, I can only see that these
packets appear on the gtp-u interface, but are not forwarded. Looking at
interface stats on gtp-u, I can see that the ping hits "tx_error" counter.

Is there anything I'm missing here? Are any parameters wrong? Or am I
misunderstanding the function of the GTP-U kernel support entirely?

Any help would be appreciated.

Thanks,
Michael
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From laforge at gnumonks.org  Mon Dec 31 16:43:00 2018
From: laforge at gnumonks.org (Harald Welte)
Date: Mon, 31 Dec 2018 17:43:00 +0100
Subject: OsmoDevCon 2019 registration
Message-ID: <20181231164300.GN20066@nataraja>

Dear fellow Osmocom developers,

I'm a bit surprised to notice that not more people have signed up for
OsmoDevCon 2019.  I guess it was mostly an oversight when the date was
originally announced, and not a lack of interest? ;)

All details about the event are available at the related wiki page at:
	https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCon2019

Please enter your name at
https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCon2019#Requested
in case you would like to attend.  Registering early allows proper
planning.  Thanks!

Looking forward to meeting old and new Osmocom developers in April 2019.

Regards,
	Harald

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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