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libgtpnl
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9 Commits

Author SHA1 Message Date
Oliver Smith 3404f3172a Add IPv6 support 
Implement IPv6 in libgtpnl and the gtp-tunnel testing tool. Allow to
combine:

- GTPA_MS_ADDRESS and GTPA_PEER_ADDR6
- GTPA_MS_ADDR6 and GTPA_PEER_ADDRESS

to specify IPv4-in-IPv6-GTP and IPv6-in-IPv4-GTP in the tunnel
declaration from control plane.

This patch is based on multiple patches from Pablo in OS#6123. I decided
to squash them to directly implement v4-in-v6 and vice versa, instead of
implementing another variant first and then changing it again.

Co-developed-by: Pablo Neira Ayuso <pablo@netfilter.org>
Related: OS#6096
Change-Id: If864c9170f74af52a95cbc4cdb1b866e0309306b
 2023-10-19 16:09:15 +02:00
Oliver Smith 717db098c7 Use struct gtp_addr for ms_addr and sgsn_addr 
Prepare for IPv6 support by using a new struct for MS and SGSN
addresses, in which either an IPv4 or IPv6 can be stored.

Related: OS#6096
Change-Id: Ifc7e3b03a723fb544d1c7b789101102b2c27b60e
 2023-10-19 16:09:15 +02:00
Harald Welte d2bb0bc506 Re-license the library as LGPLv2-or-later 
This facilitates the use from other projects such as ASL licensed
software.  We think there is no point in others having to re-implement
the GTP specific message parsing/encoding on top of libmnl, which is
LGPL anyway.

Please note that the tools are still licensed under GPL, just the
library has been changed.
 2016-07-28 20:34:45 +02:00
Pablo Neira Ayuso ee7bb1fb2e gtp: fix missing initialization of netns file descriptor 
0 is a valid file descriptor and it is the default value after calloc(),
so set this -1 so we don't send it through netlink as used init_netns.

Fixes: 200b2f4 ("gtp-rtnl: and netns support")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-05-10 18:01:48 +02:00
Andreas Schultz 17c816ff84 gtp-rtnl: Split TID handling for GTPv0 and GTPv1 
GTPv1 tunnel use separate 32bit Tunnel Endpoint Identifier's for each
direction while GTPv0 uses only one 64bit Tunnel IDentifier.

Signed-off-by: Andreas Schultz <aschultz@tpip.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-05-08 18:33:48 +02:00
Andreas Schultz 4977330369 gtp-rtnl: and netns support 
Signed-off-by: Andreas Schultz <aschultz@tpip.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 2016-05-08 18:33:40 +02:00
Harald Welte 51b00a6c6c Add copright headers and license files, list Pablo as author 
The kernel module still only listed me as author, even though Pablo
was doing most of the work on it after my initial incomplete version.
 2014-04-03 09:37:38 -04:00
Pablo Neira Ayuso b976ffa42c libgtpnl: add flow id support 
Add new attribute to the gtp tunnel object, this extension is required
by GTPv0 since the same flowid needs to be used for uplink and downlink
packet.
 2014-03-20 13:57:22 +01:00
Pablo Neira Ayuso 18532955e2 add struct gtp_tunnel and adapt functions to use it 
This patch adds a gtp_tunnel structure to avoid having to deal with
functions with lots of parameters. This should also help to extend
the interfaces and the gtp_tunnel object without breaking the binary
interface (which will be good by when ipv6 support will be added).
 2014-02-22 22:30:14 +01:00