Relationship between pci's and ip's

[Yarka]

Hello,

I would like to know how I can relate pci's and ip's on linux.

Thanks in advance.

 

[ChrisHirst]

That probably depends on what you are actually referring to as a "pci"

Chris.

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[Annihilannic]

I assume by "pci" you mean NICs which are listed in lspci?

ip a will tell you which IP addresses are associated with which network interface, e.g. "eth2".

You can find out which interface name is associated with which PCI device using ls -l /sys/class/net/*/device. For example, in the below "eth2" is the first port in the second dual-port NIC in the system.

# ls -l /sys/class/net/*/device
lrwxrwxrwx 1 root root 0 Jul  9 02:10 /sys/class/net/eth0/device -> ../../../devices/pci0000:00/0000:00:1c.0/0000:02:00.0
lrwxrwxrwx 1 root root 0 Jul  9 02:10 /sys/class/net/eth1/device -> ../../../devices/pci0000:00/0000:00:1c.0/0000:02:00.1
lrwxrwxrwx 1 root root 0 Jul  9 02:10 /sys/class/net/eth2/device -> ../../../devices/pci0000:00/0000:[red]00:1c.2[/red]/0000:03:00.0
lrwxrwxrwx 1 root root 0 Jul  9 02:10 /sys/class/net/eth3/device -> ../../../devices/pci0000:00/0000:00:1c.2/0000:03:00.1
# lspci
...
00:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13)
00:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13)
00:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13)
00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 1
[red]00:1c.2[/red] PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 3
00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1
00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2
...

Annihilannic
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