Root cause:

vAPV will reboot in these two situation,

- If feature VLAN, LLDP have been set, VF reset may fail becasue admin queue between PF/VF is busy.

- if_dpdk_get_eth_dev_pci_info() access VF when VF's reset hasn't been completed yet. Some value of VF is still NULL and cause segmentation fault.
Solution:

- Set delay time, retry loop of i40evf_init_vf() to wait admin queue is available.

- Set retry loop in if_dpdk_refresh_vlan_filter() to prevent too many request to admin queue at the same time.

- Add lock check in if_dpdk_get_eth_dev_pci_info()

On vAPV:

- Set multiple VLAN

- Turn on LLDP with each port

- write memory
On AVX:

- debug trace enable

- debug trace dump all

- debug trace disable