ndndpdk-upf

This command runs a PFCP server that turns NDN-DPDK forwarder into 5G UPF. The PFCP-related implementation is in package upf. The GTP-U face implementation in in package ethface.

This program shall be deployed alongside an NDN-DPDK forwarder on the same host. To use this program:

1. Activate the NDN-DPDK service as a forwarder.
2. Create an Ethernet port on the Ethernet device intended for N3 interface.
3. If desired, create a fallback face on the Ethernet port, so that ARP and IP works on the N3 interface.
4. Start ndndpdk-upf to provide a PFCP server on the N4 interface, which would be ready for incoming messages from the SMF.

Command line flags of this program include:

• --gqlserver: GraphQL endpoint of NDN-DPDK service activated as forwarder.
• --smf-n4: SMF N4 IPv4 address. The UPF only accepts PFCP messages from this IP address.
• --upf-n4: UPF N4 IPv4 address. The UPF binds to this IP address while listening for PFCP messages. This IP address must be configured on a kernel network interface.
• --upf-n3: UPF N3 IPv4 address. NDN-DPDK forwarder uses this IP address as the local IP in outer IPv4 header of GTP-U packets.
• --upf-mac: UPF N3 MAC address, corresponding to --upf-n3. NDN-DPDK forwarder uses this MAC address as the local MAC in outer Ethernet header of GTP-U packets.
• --upf-vlan: UPF N3 VLAN ID. If set, NDN-DPDK forwarder inserts a VLAN header before the outer IPv4 header in GTP-U packets.
• --n3: N3 ip-mac tuples, repeatable. NDN-DPDK forwarder does not perform ARP lookups. Every remote IP address (usually belongs to gNBs) that could appear in PFCP session must be listed in these tuples. NDN-DPDK forwarder uses this MAC address as the remote MAC in outer Ethernet header of GTP-U packets.
• --dn: Data Network NDN forwarder IPv4 address. NDN-DPDK forwarder uses this IP address as the local IP in inner IPv4 header of GTP-U packets.