libgtpnl¶

In order to control the kernel-side GTP-U plane, a netlink based control interface between GTP-C in userspace and GTP-U in kernelspace was invented.

The encoding and decoding of these control messages is implemented in the libgtpnl (library for GTP netlink). The library is available from https://gitea.osmocom.org/cellular-infrastructure/libgtpnl

The library uses GNU autotools, so the usual

autoreconf -fi && ./configure && make && make install

should be used to build + install it.