kernel-packages team mailing list archive

[Roman Bogorodskiy <bogorodskiy@xxxxxxxxx>]

Public bug reported:

'ip link' behaves strangely when trying to set both vlan and mac for a
VF.

Consider the following example:

$ sudo ip link set p2p1 vf 6 mac 36:c3:25:02:65:c4 vlan 300
$ ip link show p2p1
189: p2p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 0c:c4:7a:1e:ac:0e brd ff:ff:ff:ff:ff:ff
    vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 2 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 3 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 4 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 5 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 6 MAC 36:c3:25:02:65:c4, spoof checking on, link-state auto

As you can see, it was able to set MAC address, but silently ignored VLAN setting.
Now comes the interesting part, if I specify vlan first and then mac, things work:

$ sudo ip link set p2p1 vf 6 vlan 300 mac  36:c3:25:02:65:c5
$ ip link show p2p1
189: p2p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 0c:c4:7a:1e:ac:0e brd ff:ff:ff:ff:ff:ff
    vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 2 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 3 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 4 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 5 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
    vf 6 MAC 36:c3:25:02:65:c5, vlan 300, spoof checking on, link-state auto

The system is:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.1 LTS
Release:        14.04
Codename:       trusty
$ cat /proc/version_signature
Ubuntu 3.13.0-40.69-generic 3.13.11.10
$ ip -V
ip utility, iproute2-ss131122
$

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1475134

Title:
  ixgbe and iproute2: inconsistent behaviour when setting VF mac and
  vlan using 'ip link'

Status in linux package in Ubuntu:
  New

Bug description:
  'ip link' behaves strangely when trying to set both vlan and mac for a
  VF.

  Consider the following example:

  $ sudo ip link set p2p1 vf 6 mac 36:c3:25:02:65:c4 vlan 300
  $ ip link show p2p1
  189: p2p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
      link/ether 0c:c4:7a:1e:ac:0e brd ff:ff:ff:ff:ff:ff
      vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 2 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 3 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 4 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 5 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 6 MAC 36:c3:25:02:65:c4, spoof checking on, link-state auto

  As you can see, it was able to set MAC address, but silently ignored VLAN setting.
  Now comes the interesting part, if I specify vlan first and then mac, things work:

  $ sudo ip link set p2p1 vf 6 vlan 300 mac  36:c3:25:02:65:c5
  $ ip link show p2p1
  189: p2p1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
      link/ether 0c:c4:7a:1e:ac:0e brd ff:ff:ff:ff:ff:ff
      vf 0 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 1 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 2 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 3 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 4 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 5 MAC 00:00:00:00:00:00, spoof checking on, link-state auto
      vf 6 MAC 36:c3:25:02:65:c5, vlan 300, spoof checking on, link-state auto

  The system is:

  $ lsb_release -a
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description:    Ubuntu 14.04.1 LTS
  Release:        14.04
  Codename:       trusty
  $ cat /proc/version_signature
  Ubuntu 3.13.0-40.69-generic 3.13.11.10
  $ ip -V
  ip utility, iproute2-ss131122
  $

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