update port configurations in lldpd as soon as port created

dockers/docker-lldp-sv2/Dockerfile

@@ -18,5 +18,6 @@ RUN apt-get update && \
     rm -rf /deps ~/.cache
 
 COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+COPY reconfigure.sh /opt/reconfigure.sh
 
 ENTRYPOINT ["/usr/bin/supervisord"]

dockers/docker-lldp-sv2/reconfigure.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -e
+
+num_of_interfaces=32
+if_step=4
+last_if_idx=$((num_of_interfaces*if_step - if_step))
+
+function wait_until_if_exists
+{
+  while /bin/true ;
+  do
+    if [ -L /sys/class/net/"$if" ];
+    then
+      break
+    fi
+    sleep 1
+  done
+  echo interface "$if" is up
+}
+
+
+function wait_until_if_not_exists
+{
+  while /bin/true ;
+  do
+    if [ ! -L /sys/class/net/"$if" ];
+    then
+      break
+    fi
+    sleep 1
+  done
+  echo interface "$if" is down
+}
+
+
+while /bin/true ;
+do
+  # wait until all interfaces are up
+  echo Wait until all ifaces are up
+  for i in $(seq 0 $if_step $last_if_idx)
+  do
+    if=Ethernet${i}
+    wait_until_if_exists
+  done
+
+  # apply lldpd configuration
+  echo apply lldpd configuration
+  lldpcli -c /etc/lldpd.conf
+
+  # wait until all interfaces are down
+  echo Wait until all ifaces are down
+  for i in $(seq 0 $if_step $last_if_idx)
+  do
+    if=Ethernet${i}
+    wait_until_if_not_exists
+  done
+done

dockers/docker-lldp-sv2/supervisord.conf

@@ -10,6 +10,10 @@ nodaemon=true
 command=/usr/sbin/lldpd -d -I Ethernet*,eth*
 priority=100
 
+[program:lldpd-conf-reload]
+command=/opt/reconfigure.sh
+priority=150
+
 [program:lldp-syncd]
 command=/usr/bin/env python2 -m lldp_syncd
 priority=200