One can attempt to do: $ cat /sys/class/net/encc000/device/card_type in some modes it will tell you if the card is real or not, e.g.: "OSD_10GIG" is real card on an lpar.
on KVM that file doesn't exist as device is a symlink to "virtio0". on z/VM it has: "Virt.NIC QDIO" Which is well, a fake virtualised card that can be anything. I would recommend to verify link speeds for an interface on s390x if: 1) /sys/class/net/<interface>/device/card_type exists 2) does not start with Virt 3) does not have "unknown" 4) does not have HiperSockets 5) starts with OS -> which should catch all known physical cards e.g. OSD_100/1000/10GIG/FE_LATE/GbE_NAME/ATM_LANE/Express; OSN; OSM_1000; OSX_10GIG -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1572347 Title: problems with network speed reporting in sysfs on s390 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1572347/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
