[Bug 1065] dpdkvhostuserclient port link state is down when ovs-vswitchd is reset

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1065

            Bug ID: 1065
           Summary: dpdkvhostuserclient port link state is down when
                    ovs-vswitchd is reset
           Product: DPDK
           Version: 22.03
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: vhost/virtio
          Assignee: dev at dpdk.org
          Reporter: 125163227 at qq.com
  Target Milestone: ---

The OVS vsswitchd service runs in the k8s pod. When the OVS vswitchd service is
restarted outside the k8s pod, the dpdkvhostuserclient port cannot be up, and
the link status is down.

_uuid               : 40eb0983-e6f3-482b-ad24-feda610e5007
admin_state         : up
bfd                 : {}
bfd_status          : {}
cfm_fault           : []
cfm_fault_status    : []
cfm_flap_count      : []
cfm_health          : []
cfm_mpid            : []
cfm_remote_mpids    : []
cfm_remote_opstate  : []
duplex              : []
error               : []
external_ids        : {attached-mac="fa:16:3e:af:ff:88",
iface-id="89564e04-3f67-4277-bc5d-6c7f2637d33e", iface-status=active,
ovn-installed="true", vm-uuid="02a0c63d-f99e-4294-ba01-51d4b06ccafc"}
ifindex             : 2587509
ingress_policing_burst: 0
ingress_policing_kpkts_burst: 0
ingress_policing_kpkts_rate: 0
ingress_policing_rate: 0
lacp_current        : []
link_resets         : 0
link_speed          : []
link_state          : down
lldp                : {}
mac                 : []
mac_in_use          : "00:00:00:00:00:00"
mtu                 : 1500
mtu_request         : 1500
name                : vhu89564e04-3f
ofport              : 14
ofport_request      : []
options             : {vhost-server-path="/var/run/openvswitch/vhu89564e04-3f"}
other_config        : {}
statistics          : {ovs_rx_qos_drops=0, ovs_tx_failure_drops=0,
ovs_tx_invalid_hwol_drops=0, ovs_tx_mtu_exceeded_drops=0, ovs_tx_qos_drops=0,
ovs_tx_retries=0, rx_1024_to_1522_packets=0, rx_128_to_255_packets=0,
rx_1523_to_max_packets=0, rx_1_to_64_packets=0, rx_256_to_511_packets=2,
rx_512_to_1023_packets=0, rx_65_to_127_packets=0, rx_bytes=684, rx_dropped=0,
rx_errors=0, rx_packets=2, tx_bytes=344, tx_dropped=1, tx_packets=1}
status              : {mode=client, status=disconnected}
type                : dpdkvhostuserclient

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