Description
This test case verifies that the interface names for adapters on Add-in PCI slots are of the form pci<slot>#<port>_<virtual function instance>.
Setup
- Make sure your system is booted into a Fedora 41 or Rawhide kernel and has at least one add-in network controller plugged into the available PCI slot.
How to test
- Identify the add-in network adapters in your system. Use instructions here to identify the on-board network devices. Any remaining network devices are add-in network adapters. Output from the command
lspci
can help identify add-in adapters. For example, on a Dell PowerEdge system with four BCM5709 on-board network adapters, a 82572EI single port adapter and a 82576 dual port network adapter, on-board network adapters would display as follows:01:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) 01:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20) 02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet (rev 20)
While, PCI add-in network adapters would appear as noted below:
06:00.0 Ethernet controller: Intel Corporation 82572EI Gigabit Ethernet Controller (Copper) (rev 06) 07:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 07:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)
- Verify that the add-in network adapters are named as per their physical location on the system board. The command
ls /sys/class/net/pci*
can be used to list add-in network adapters.# ls /sys/class/net/ lo pci3#1 pci3#2 pci4#1
You can further inspect each add-in network adapter using the command
ethtool -i pciN#M
. For example, to inspect add-in network adapter on PCI Slot 4 Port 1 (pci4#1
) ...# ethtool -i pci4#1 driver: e1000e version: 1.2.7-k2 firmware-version: 5.6-8 bus-info: 0000:06:00.0
Alternatively, to inspect add-in network adapter on PCI Slot 3 Port 2 (
pci3#2
) ...# ethtool -i pci3#2 driver: igb version: 2.1.0-k2 firmware-version: 1.5-1 bus-info: 0000:07:00.1
Expected Results
- All the add-in PCI network interfaces should get named as per their physical location in the system motherboard. The expected naming format is
pciM#N
whereM
is the PCI slot number, andN
is the port number on the device.
- All the add-in PCI network interfaces should get named as per their physical location in the system motherboard. The expected naming format is