fabric-programmable-networking

Instructions

When invoked, generate code for programmable networking on FABRIC. Four main capabilities:

1. P4 Tofino — Barefoot Tofino programmable switches with SDE compilation and table population
2. DPDK SmartNIC — High-performance packet processing with Mellanox ConnectX NICs
3. BlueField DPU — NVIDIA BlueField-3 Data Processing Units with RShim management
4. Open vSwitch (OVS) — Software-defined switching with STP support

Help the user choose the right approach and generate complete setup code.

API Reference

P4 Switch

# Add P4 Tofino switch to slice
switch = slice.add_switch(name="p4-switch", site=site)

# Get switch ports
iface1 = switch.get_interfaces()[0]
iface2 = switch.get_interfaces()[1]

# Interactive command execution (regex prompt matching)
switch.execute(command=[
    ("command", r"expected_prompt_regex", timeout_seconds),
])

# Get logical port numbers
port = switch.get_interfaces()[0].get_device_name()

NIC Models for Programmable Networking

# Standard SR-IOV (10 Gbps virtual function, 1 port)
model = 'NIC_Basic'

# Mellanox ConnectX-5 (25 Gbps dedicated, 2 ports)
model = 'NIC_ConnectX_5'

# Mellanox ConnectX-6 (100 Gbps dedicated, 2 ports)
model = 'NIC_ConnectX_6'

# BlueField-3 DPU (100 Gbps, 2 ports)
model = 'NIC_ConnectX_7_100'

# BlueField-3 DPU (400 Gbps, 2 ports)
model = 'NIC_ConnectX_7_400'

Hardware Info Methods

pci_addr = iface.get_component().get_pci_addr()[0]
mac_addr = iface.get_mac()
os_iface = iface.get_physical_os_interface_name()
dev_name = iface.get_device_name()

BlueField DPU Configuration

bluefield = node.get_component(name='nic1')
output = bluefield.configure()  # Push BFB image via RShim
output = bluefield.configure(commands=['cmd1', 'cmd2'])  # With custom commands

CPU/NUMA Tuning

node.pin_cpu(component_name='nic1')  # Pin vCPUs to NIC's NUMA node
node.numa_tune()                      # Pin memory to same NUMA node