[dpdk-users] [dpdk-18.05] Issue while configuring VLAN ID and priority in VF

["Wu, Jianyue (NSB - CN/Hangzhou)" <jianyue.wu@nokia-sbell.com>]

Hi, xiaoyun,

Could you help give a hand about this issue? Thanks indeed:)

Background:
Simplified traffic flow is like this: Sender XEON X552 eth1 vf 0 -> Receiver XEON X552 eth1 vf 0.
Our requirement is to configure DPDK to support one VLAN ID, and with multiple priorities 0~7.

Current configuration is:
PVID:
rte_eth_dev_set_vlan_pvid(port_id, 201, 1);
VLAN offload:
                  vlan_offload = rte_eth_dev_get_vlan_offload(port_id);
  vlan_offload &= ~ETH_VLAN_STRIP_OFFLOAD;
  vlan_offload &= ~ETH_VLAN_FILTER_OFFLOAD;
  vlan_offload &= ~ETH_VLAN_EXTEND_OFFLOAD;
  if (0 != rte_eth_dev_set_vlan_offload(port_id, vlan_offload))
Spoof off, trust on:
          vf 0 MAC 02:40:43:80:01:39, spoof checking off, link-state auto, trust on, query_rss off

Test scenarios:
====================================================
First scenario: set vlan in vf 0 -- priority always 0
====================================================
ip link show eth1
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9194 qdisc mq state UP mode DEFAULT group default qlen 1000
    link/ether 02:40:43:80:01:38 brd ff:ff:ff:ff:ff:ff
vf 0 MAC 02:40:43:80:01:39, vlan 201, spoof checking off, link-state auto, trust on, query_rss off

If we configure vlan in vf 0, then we can only send out packets with priority 0.
Even we already enabled mbuf->ol_flags |= PKT_TX_VLAN_PKT; and set correct mbuf->vlan_tci.

======================================================

Second scenario: not set vlan in vf 0 -- can't recv
======================================================
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9194 qdisc mq state UP mode DEFAULT group default qlen 1000
    link/ether 02:40:43:80:01:38 brd ff:ff:ff:ff:ff:ff
vf 0 MAC 02:40:43:80:01:39, spoof checking off, link-state auto, trust on, query_rss off

If we don't set vlan in vf 0, then we can send out in sender XEON X552 eth1 vf 0 with correct VLAN ID and priority,
From tcpdump in mirrored traffic of receiver XEON, we can see the packet has correct VLAN ID and priority,
but the problem is packet silently dropped. From DPDK counters, we can't see the packet received in
receiver XEON X552 eth1 vf0. When we enable promiscuous mode, we can see the packets arrive in
receiver XEON, and VLAN ID, priority is correct. but can't arrive at DPDK.

From my simple assumption, maybe we need second scenario, to support multiple priorities.
But how to configure to let the packet pass vf 0?
Did I miss something in my configuration?

Thanks indeed in advance!

Best Regards,
Dave(Jianyue)