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Pablo Neira Ayuso pablo at gnumonks.orgOn Mon, Oct 26, 2015 at 06:14:19PM +0100, Andreas Schultz wrote: > Hi, > > Some time ago, Pablo Neira Ayuso wrote a GTP-U kernel module and OpenGGSN > support for it. The OpenGGSN side is easily available in the osmocom git [1]. > The kernel part is somewhat harder to find, but it's at [2]. > > It seems that both sides are at 70% completion and only somewhat working. > > I have played with the kernel module, changed a couple things and would > like to get some feedback on my changes. > > It can be found at: https://github.com/RoadRunnr/osmo-ggsn > > Things I've changed: > > * requires kernel from net-next (or 4.3) > * convert to use the existing kernel iptunnel infrastructure > * fix GTP-u v1 TEI usage (we need one TEI for RX and another one > for TX) > * use UDP sockets passed from userland for sending (instead of > direct push to network interface) > * fix resource release on GTP-U socket shutdown > * release all resource on module removal > > The module currently works with a proof-of-concept GGSN/PGW implemented > in Erlang (will post once the licensing is sorted). OpenGGSN will need > some small changes (will post soon). Will looking into this, probably we can get this submitted mainstream soon. Thanks for sharing incremental updates.