Migrate F1 DU configuration update procedures in openair2/RRC/NR/rrc_gNB_du.c
to use the cell management API instead of accessing cell data through
setup_req, completing the transition to the new multi-cell architecture.
1. update_cell_info:
- Refactored to use cell management API: takes RRC instance, old cell_id,
and new cell info; finds cell via get_cell_by_cell_id() internally.
- Returns cell container pointer (or NULL on failure) instead of void.
- When cell_id changes: removes cell from RB tree (old key), updates via
cp_f1_served_cell_info_to_cell(), re-inserts (new key); validates no
duplicate cell_id/PCI before allowing change.
- Frees old MTC when new measurement timing config is present.
- Encapsulates cell lookup and update logic.
2. rrc_gNB_process_f1_du_configuration_update:
- Uses update_cell_info() for cell modify; validates cell belongs to DU
(assoc_id) after update.
- Duplicate checking via get_cell_by_cell_id() and
rrc_get_cell_by_pci_for_du()
- For cells to add: validates duplicate cell_id globally and duplicate
PCI within DU; rejects with logging.
- MIB/SIB1 updated in cell container (cell->mib, cell->sib1); uses
du->gNB_DU_id; passes cell to label_intra_frequency_neighbours();
removes direct setup_req->cell[0] access.
Backward compatibility: setup_req remains until migration is completed;
cell-specific data is managed in the cell container and accessed via
the cell management API. Improves separation of concerns and enables
proper multi-cell support.
Guido Casati
15c79b0288