This fixes the following kernel error message:
netlink: 'osmo-ggsn': attribute type 1 has an invalid length.
This is due to CTRL_ATTR_FAMILY_ID being defined as a 16bit netlink
attribute, but us encoding it as u32:
netlink/genetlink.c: [CTRL_ATTR_FAMILY_ID] = { .type = NLA_U16 },
let's properly encode it as 16bit and hence resolve the error message.
Change-Id: I41b2719ffc24d7a3420b5980f2a967264e606d91
Closes: OS#3216
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.
This patch adds the libgtpnl library. Harald mentioned that he wanted
that the specific code that is added is well encapsulated, so let's
start a small library to interact with the GTP kernel module via netlink
interface.
This was done a bit while in the rush, so the interfaces are not nice
at all and the tools need to be ported on top of this library.
This library will be used to integrate openggsn with the GTP kernel
module.
Harald Welte
Pablo Neira Ayuso