Net Naming Scheme
net.ifnames cmdline
eth: Original Simple Scheme
- en: Ethernet
o: o:Onboard (板载网卡)
P: P:Domain
p: p:PCIe Bus
s: s:Slot, 可热插拔的网卡
f: f:Function
x: x:MAC address
ib: InfiniBand
sl: 串列线路互联网协议(slip：Serial line IP)
- wl: Wireless Lan (WLAN, WiFi)
wlx: 使用MAC地址命名的网卡
ww: Wild Wireless (WWAN)
biosdevname cmdline
em[1234…]: Embedded Network Interface (LOM)
- p<slot><ethernet port>: PCI card network Interface
p3p4
- p<slot><ethernet port>_<virtual interface>: Virtual Function
p3p4_1
sudo dnf install biosdevname
sudo apt install biosdevname
net.ifnames .vs. biosdevname
net.ifnames |
biosdevname |
example |
|---|---|---|
default |
default |
enp5s2 |
default |
0 |
enp5s2 |
0 |
default |
em1 |
0 |
0 eth1 |
示例
PCIe
enp129s0f0np0
81:00.0 Ethernet controller: xxx
^^^^^^^^ en
^^ p129 (bus)
^^ s0 (slot)
^ f0 (function)
enp129s0f1np1
81:00.1 Ethernet controller: xxx
^^^^^^^^ en
^^ p129 (bus)
^^ s0 (slot)
^ f1 (function)
enP6p9s93f0
0006:09:5d.0 Ethernet controller: xxx
^^^^^^^^ en
^^^^ P6 (Domain)
^^ p9 (Bus)
^^ s93 (Slot)
^ f0 (Function)
Q: What is np0/np1?
A: Different net driver version support different feature, such as devlink. You need to check:
$ lspci -k -s 21:00.1
$ modinfo mlx5_core
MAC
enx08c0eb8efbd9
ether 08:c0:eb:8e:fb:d9
Onboard
eno1
systemd-udev
/usr/lib/systemd/network/99-default.link
/etc/udev/rules.d/
udevadm
$ udevadm info /sys/class/net/${name}
$ udevadm test /sys/class/net/${name}