[bgp] Save admin state and set default state to shutdown

dockers/docker-fpm-quagga/base_image_files/bgp_neighbor

@@ -0,0 +1,46 @@
+#!/bin/bash -e
+
+usage(){
+   echo "Usage:   $0 <shutdown|startup> <neighbor_ip>"
+   exit 255
+}
+
+[[ $# -ne 2 ]] && usage
+
+COMMAND=$1
+NEIGHBOR_IP=$2
+
+if [ "$COMMAND" == "shutdown" ]; then
+    CMD_PREFIX=""
+elif [ "$COMMAND" == "startup" ]; then
+    CMD_PREFIX="no"
+else
+    usage
+fi
+
+ASN=`vtysh -c "show ip bgp su" | sed -n "s/.*AS number \([0-9]\+\).*/\1/p"`
+if [ -z "$ASN" ]; then
+    exit 255
+fi
+
+[ -f /etc/sonic/bgp_admin.yml ] || echo "bgp_admin_state:" > /etc/sonic/bgp_admin.yml
+
+if [ "$NEIGHBOR_IP" == "0.0.0.0" ] ; then
+    for NEIGHBOR in `vtysh -c "show run" | grep nei | grep -oE "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+" | sort | uniq`; do
+        vtysh -c "configure terminal" -c "router bgp $ASN" -c "$CMD_PREFIX neighbor $NEIGHBOR shutdown"
+
+        # Save admin state in config file
+        sed -i "/^\s*$NEIGHBOR:/d" /etc/sonic/bgp_admin.yml
+        [ "$COMMAND" == "shutdown" ] || echo "  $NEIGHBOR: on" >> /etc/sonic/bgp_admin.yml
+    done
+
+else
+    # Examine bgp neighbor exists first
+    vtysh -c "show ip bgp neighbor $NEIGHBOR_IP" | grep -q "BGP neighbor is"
+
+    vtysh -c "configure terminal" -c "router bgp $ASN" -c "$CMD_PREFIX neighbor $NEIGHBOR_IP shutdown"
+
+    # Save admin state in config file
+    sed -i "/^\s*$NEIGHBOR_IP:/d" /etc/sonic/bgp_admin.yml
+    [ "$COMMAND" == "shutdown" ] || echo "  $NEIGHBOR_IP: on" >> /etc/sonic/bgp_admin.yml
+fi

dockers/docker-fpm-quagga/bgpd.conf.j2

@@ -50,6 +50,9 @@ router bgp {{ minigraph_bgp_asn }}
 {% if bgp_session['asn'] != 0 %}
   neighbor {{ bgp_session['addr'] }} remote-as {{ bgp_session['asn'] }}
   neighbor {{ bgp_session['addr'] }} description {{ bgp_session['name'] }}
+{% if not bgp_admin_state or not bgp_admin_state[bgp_session['addr']] %}
+  neighbor {{ bgp_session['addr'] }} shutdown
+{% endif %}
 {% if minigraph_devices[inventory_hostname]['type'] == 'ToRRouter' %}
   neighbor {{ bgp_session['addr'] }} allowas-in 1
 {% endif %}

dockers/docker-fpm-quagga/config.sh

@@ -1,7 +1,11 @@
 #!/bin/bash
 
 mkdir -p /etc/quagga
-sonic-cfggen -m /etc/sonic/minigraph.xml -t /usr/share/sonic/templates/bgpd.conf.j2 >/etc/quagga/bgpd.conf
+if [ -f /etc/sonic/bgp_admin.yml ]; then
+    sonic-cfggen -m /etc/sonic/minigraph.xml -y /etc/sonic/bgp_admin.yml -t /usr/share/sonic/templates/bgpd.conf.j2 >/etc/quagga/bgpd.conf
+else
+    sonic-cfggen -m /etc/sonic/minigraph.xml -t /usr/share/sonic/templates/bgpd.conf.j2 >/etc/quagga/bgpd.conf
+fi
 sonic-cfggen -m /etc/sonic/minigraph.xml -t /usr/share/sonic/templates/zebra.conf.j2 >/etc/quagga/zebra.conf
 
 sonic-cfggen -m /etc/sonic/minigraph.xml -t /usr/share/sonic/templates/isolate.j2 >/usr/sbin/bgp-isolate

rules/docker-fpm-quagga.mk

@@ -11,3 +11,4 @@ $(DOCKER_FPM_QUAGGA)_RUN_OPT += --net=host --privileged -t
 $(DOCKER_FPM_QUAGGA)_RUN_OPT += -v /etc/sonic:/etc/sonic:ro
 
 $(DOCKER_FPM_QUAGGA)_BASE_IMAGE_FILES += vtysh:/usr/bin/vtysh
+$(DOCKER_FPM_QUAGGA)_BASE_IMAGE_FILES += bgp_neighbor:/usr/bin/bgp_neighbor