Support of multiple QoS-enabled DRBs
This merge request introduces changes to handle multiple DRBs, each of them mapped to a different QoS flow.
- Adaptation work in SDAP to support multiple DRBs with different QoS Flows mapped to each of them.
- Map SDAP SDUS with no QFI-to-DRB mapping to the default DRB
- Keep mapping table stored unless I new configuration update is received
- separated SDAP configuration procedures from SDAP entity creation.
- Reworked SDAP Entity Creation
- Handling Multiple DRBs with Different QoS Flows
- Assumption: Multiple DRBs, one QoS flow per DRB
- Only one default DRB is allowed per SDAP entity
- Setup of 1 GTP-U tunnel per PDU session on the N3 interface
- Setup of 1 GTP-U F1-U tunnel per DRB
- Mark Each GTP-U packet processed within the tunnel, belonging to a QoS flow mapped to a DRB, with the corresponding QFI.