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[Tim Gardner <tim.gardner@xxxxxxxxxxxxx>]

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Zesty)
   Importance: High
     Assignee: Rafael David Tinoco (inaddy)
       Status: In Progress

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https://bugs.launchpad.net/bugs/1658491

Title:
  VLAN SR-IOV regression for IXGBE driver

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  New
Status in linux source package in Yakkety:
  New
Status in linux source package in Zesty:
  In Progress

Bug description:
  
  IXGBE driver, for SR-IOV setups, is misbehaving with VLANs.

  Description from affected user:

  - Create 2 networks (sriov 100 and 102 vlan)

  # neutron net-create --provider:physical_network=PHY0 --provider:network_type=vlan --provider:segmentation_id=100 PHY0_vlan_100
  # neutron net-create --provider:physical_network=PHY0 --provider:network_type=vlan --provider:segmentation_id=102 PHY0_vlan_102

  - Create the subnets:

  # neutron subnet-create PHY0_vlan_100 192.168.50.0/24
  # neutron subnet-create PHY0_vlan_102 192.168.60.0/24

  - Create the neutron ports:

  # neutron port-create e450757f-fec6-466e-bb21-a42a2019fe6b --name vlan_100_port1 --vnic-type direct
  # neutron port-create 32c468ed-7e1e-4267-bbbf-ec72d33e4454 --name vlan_102_port1 --vnic-type direct

  - Boot 2 VMs on 2 different hosts (add only 1 port to each of them +
  ovs dhcp network):

  # nova boot --flavor 789 --image ubuntu --nic net-id=1cf2a512-8963-413d-a745-99e758789c2b --nic port-id=92cf2867-cc0a-4e0d-aa87-14a345cdd708 102_port1_compute6 --key-name mkey --config-drive true --availability-zone nova:compute-0-6.domain.tld --poll
  # nova boot --flavor 789 --image ubutnu --nic net-id=1cf2a512-8963-413d-a745-99e758789c2b --nic port-id=baec6fd6-933d-4c58-94b6-44c50405d409 100_port1_compute5 --key-name mkey --config-drive true --availability-zone nova:compute-0-5.domain.tld --poll

  - After the VMs booted, configure the VFs:

  root@102-port1-compute6:~# ifconfig eth1 192.168.34.6 up
  root@100-port1-compute5:~# ifconfig eth1 192.168.34.5 up

  If I ping each other it works but it shouldn't work because in this
  case both of the VMs's interface (host VF) are in different vlans:

  - Pinging shouldn't work because the VMs interface (host VF) are in
  different VLANs.

  root@compute-0-5:~# ip link show eth6
  8: eth6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2140 qdisc mq state UP mode DEFAULT group default qlen 1000
  link/ether a0:36:9f:3f:1a:64 brd ff:ff:ff:ff:ff:ff
  vf 5 MAC fa:16:3e:f0:2c:e2, vlan 100, spoof checking on, link-state auto

  root@compute-0-6:~# ip link show eth5
  8: eth5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 2140 qdisc mq state UP mode DEFAULT group default qlen 1000
  link/ether a0:36:9f:3f:20:88 brd ff:ff:ff:ff:ff:ff
  vf 7 MAC fa:16:3e:ce:69:41, vlan 101, spoof checking on, link-state auto 

  But user can ping both VMs.

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