Cellular Network Infrastructure » Core Network (CN) » OsmoHNBGW

Implement basic support for URR (Usage Reporting Rule).

The goal here is to use PFCP URR to instruct the UPF to:

• count the number of packets and bytes within each TEID (ul/dl separately)
• periodically report those counters via PFCP to the control plane
• report the final counters when the tunnel is closed

The osmo-hnbgw side then will have to report those packet/byte counters [at the very least] as per-hnb aggregate figures.

Until osmo-upf has the related features (#6394), testing of the osmo-hnbgw side can be done against open5gs-upf, which should already suport it since pespin taught it URR support in April 2022.