Bug 1673321 - [RFE] Allow to match network devices by PCI Address
Summary: [RFE] Allow to match network devices by PCI Address
Keywords:
Status: NEW
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: NetworkManager
Version: 8.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: 8.0
Assignee: Thomas Haller
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks: 1695634 1723391
TreeView+ depends on / blocked
 
Reported: 2019-02-07 11:29 UTC by Till Maas
Modified: 2019-06-24 12:20 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 1723391 (view as bug list)
Environment:
Last Closed:
Type: Bug


Attachments (Terms of Use)

Description Till Maas 2019-02-07 11:29:40 UTC
Description of problem:
Currently, NetworkManager only allows to specify devices by name or MAC address. Since the device name is not stable and the MAC address requires an inventory about which MAC addresses are used, it would be nice to be able to specify a network card by PCI address, i.e. 0000:00:1f.6.

Additional info:
This could be implemented by a match setting that already exists for interface-name but not yet for PCI ID.

Comment 1 Thomas Haller 2019-02-07 11:38:10 UTC
do you know how to obtain the PCI address?

Comment 2 Thomas Haller 2019-02-07 11:56:43 UTC
there is:

 - grep PCI_SLOT_NAME /sys/class/net/*/device/uevent

 - ethtool -i eth0
 
     - which uses ETHTOOL_GDRVINFO and "struct ethtool_drvinfo"

 - udevadm info -a -p /sys/class/net/eth0

 - sudo lshw -c network -businfo  

 - lspci -D 

 - udevadm info /sys/class/net/eth0 



Note in `man systemd.link` there is:

       Path=
           A whitespace-separated list of shell-style globs matching the persistent path, as exposed by the udev property "ID_PATH".


and 

  $ udevadm info /sys/class/net/eth0 | grep ID_PATH=



So, we probably want to implement this udev "path".


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