GPRS SGSN status update

Hi! The gprs-sgsn branch has seen quite a number of changes during the last week, most of them are related to the gb-proxy that I'm currently implementing. The Gb-proxy can multiplex several Gb connections (each to one BTS) and present them as one NS-VC with many BSSGP-VC (one for each BTS) to the SGSN. The proxy is not needed for most users OpenBSC operation. However, I have now also adapted the SGSN support inside OpenBSC to the modified NS and BSSGP code for the proxy. Furthermore, I've fixed many of its limitations and it should now be fairly generic, working with multiple BTSs, etc. Also, the SGSN is now a standalone program called osmo_sgsn. A lot of the legacy cruft has been eliminated, i.e. the SGSN code does no longer need the gsm_network/bts/trx/... data structures that are not applicable to the GPRS network model anyway. As a result, GPRS ATTACH and RA UPDATE are working again, like they did months ago. I'm now still stuck somewhere in PDP context activation, and am confident that this will be solved tomorrow. After that point, the actual data plane can be worked on, i.e. flow control and fragmentation, as well as somehow actually routing IP packets into the LLC connection. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)