With no pdp parameter gtp_req() will send the packet to TEID 0 which is
not what we want. When trying to modify an established pdp context the
correct TEID of that context must be used.
It would print the memory location of the address buffer. Instead, print the
human readable host address and port.
The current code base supports only IPv4, and thread safety is apparently not
required, hence just use inet_ntoa(). (The IPv6 and thread capable version is 4
times longer and harder to read.)
struct gtp0_header needs __attribute__((packed)) to make sure that
gcc doesn't add a hole of 4 bytes to align the 64-bits teid, resulting
in 24 bytes instead of 20 bytes. This was breaking gtpv0 in my gprs
testbed with my x86_64 laptop.
While at it, add also attribute packed to other headers just to
make sure that gcc doesn't pad the structures with holes.
This is fixing various compiler warnings:
In file included from sgsn_libgtp.c:49:0:
include/gtp.h:397:48: warning: ‘struct ul66_t’ declared inside parameter list [enabled by default]
include/gtp.h:397:48: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
include/gtp.h:398:49: warning: ‘struct ul66_t’ declared inside parameter list [enabled by default]
include/gtp.h:399:53: warning: ‘struct ul16_t’ declared inside parameter list [enabled by default]
include/gtp.h:400:53: warning: ‘struct ul16_t’ declared inside parameter list [enabled by default]
include/gtp.h:397:48: warning: ‘struct ul66_t’ declared inside parameter list [enabled by default]
include/gtp.h:397:48: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
include/gtp.h:398:49: warning: ‘struct ul66_t’ declared inside parameter list [enabled by default]
include/gtp.h:399:53: warning: ‘struct ul16_t’ declared inside parameter list [enabled by default]
include/gtp.h:400:53: warning: ‘struct ul16_t’ declared inside parameter list [enabled by default]
After so many years of silence, we don't expect the original author to
return to the project. To make things a bit simpler for us, we convert
the coding style to what we are used to (Linux style).
The conversion was made using the 'Lindent' script which is part of the
Linux kernel.
According to 3GPP TS 29.060 recovery is optional, add command line option --norecovery to remove this field in sgsnemu
Signed-off-by: Yann BONNAMY <yann_bonnamy@yahoo.fr>
Signed-off-by: Harald Welte <laforge@gnumonks.org>
Routing Area Information is an optional Field described in 3GPP TS 29.060 7.7.3
it can be added with command line option rai, in the dot separated format MCC.MNC.LAC.RAC
example : --rai 208.10.65535.255
Signed-off-by: Yann BONNAMY <yann_bonnamy@yahoo.fr>
Signed-off-by: Harald Welte <laforge@gnumonks.org>
I use OpenGGSN to create/update/delete PDP context and I found a bug
in the implementation: when the sgsnemu sends an "update PDP context"
request, it receives back a "create PDP context" response. Below is
the correction I made, I hope it helps.
This adds support for the followng new GTP Information Elements:
RAT_TYPE, USER_LOC, MS_TZ, IMEI_SV
Furthermore, it allows to specify those fields as sgsnemu command line
arguments.
Relevant output of make:
gtp.c: In function ‘log_restart’:
gtp.c:697: warning: ignoring return value of ‘fscanf’, declared with
attribute warn_unused_result
Signed-off-by: Emmanuel Bretelle <chantra@debuntu.org>
in front of Cisco and Alcatel GGSN's, we meet the following error :
5 packets transmitted
Disconnecting PDP context #0
openggsn[24940]: gtp.c: 2417: Unexpected cause value received: 193. Packet from 172.29.5.130:2123, length: 14, content: 32 15 00 06 00 00 00 01 04 02 00 00 01 c1
it is because in the sgsnemu requests packet, the teardown field is after the NSAPI field :
No. Time Source Destination Protocol Info
24 10.940094 172.21.5.1 172.29.5.130 GTP Delete PDP context request
Frame 24 (58 bytes on wire, 58 bytes captured)
Ethernet II, Src: HewlettP_55:23:8d (00:11:0a:55:23:8d), Dst: Alcatel-_f6:8e:32 (00:d0:95:f6:8e:32)
Internet Protocol, Src: 172.21.5.1 (172.21.5.1), Dst: 172.29.5.130 (172.29.5.130)
User Datagram Protocol, Src Port: gtp-control (2123), Dst Port: gtp-control (2123)
GPRS Tunneling Protocol
Flags: 0x32
Message Type: Delete PDP context request (0x14)
Length: 8
TEID: 0x00000739
Sequence number: 0xbc02
N-PDU Number: 0x00
Next extension header type: No more extension headers (0x00)
[--- end of GTP header, beginning of extension headers ---]
NSAPI: 0
Teardown Indicator: True
[Response In: 25]
Taken from http://sourceforge.net/tracker/index.php?func=detail&aid=2865662&group_id=68956&atid=522957
All those will be re-generated by "autoreconf -i" anyway, so
there's no point in keeping them in the repository.
Also, the 'bootstrap' script is no longer working with recent
autotools versions anyway.
Daniel Willmann
Holger Hans Peter Freyther
Alexander Huemer
Neels Hofmeyr
Harald Welte