Cellular Network Infrastructure » osmo-ePDG - VoWifi Evolved Packet Data Gateway

I managed to setup diameter with SWx. So far only MAR

Network Initiated De-Registration by HSS (TS 29.273 8.1.2.2.3.2, RTR) has 2 modes, depending on DEregistration-Reason:
- PERMANENT_TERMINATION: "The 3GPP AAA Server should start
the network initiated de-registration towards the user."
- NEW_SERVER_ASSIGNED: "The 3GPP AAA Server shall remove all user data and session information for the user indicated in
the de-registration request. The 3GPP AAA Server shall not start the network initiated de-registration towards
the user."

I so far implemented NEW_SERVER_ASSIGNED, which is easier since AAA-server only needs to delete internal state and not propagate the termination:
https://gerrit.osmocom.org/c/erlang/osmo-epdg/+/36232 AAA: Swx: Answer RTR with RTA
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/36230 epdg: Introduce test TC_hss_initiated_deregister_new_server_assigned

I submitted PERMANENT_TERMINATION, which is mostly working but I still hit a diameter encoding issue in S6b ASR. From the point of view of HSS though, everything is working.

A new version of the patch has been submitted with all issues fixed for the PERMANENT_TERMINATION network initiated de-registration case.

Only "Push-Profile" is missing now in this interface AFAICT.

Missing specific Swx propagation of "HSS Initiated Update of User Profile Procedure" to other interfaces will be handled here:
https://osmocom.org/issues/6404

The specific Swx code is already there, so closing this generic ticket.