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34f9a642dd
- Why I did it Fixes #11431 - How I did it dhcp6relay binds to ipv6 addresses configured on these vlan interfaces Thus check if they are ready before launching dhcp6relay - How to verify it Unit Tests Tested on a live device Signed-off-by: Vivek Reddy Karri <vkarri@nvidia.com>
72 lines
2.0 KiB
Django/Jinja
72 lines
2.0 KiB
Django/Jinja
#!/usr/bin/env bash
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function wait_until_iface_ready
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{
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IFACE_NAME=$1
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IFACE_CIDR=$2
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echo "Waiting until interface ${IFACE_NAME} is ready..."
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# Wait for the interface to come up
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# (i.e., interface is present in STATE_DB and state is "ok")
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while true; do
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RESULT=$(sonic-db-cli STATE_DB HGET "INTERFACE_TABLE|${IFACE_NAME}|${IFACE_CIDR}" "state" 2> /dev/null)
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if [ x"$RESULT" == x"ok" ]; then
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break
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fi
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sleep 1
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done
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echo "Interface ${IFACE_NAME} is ready!"
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}
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function check_for_ipv6_link_local
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{
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IFACE_NAME=$1
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echo "Waiting until interface ${IFACE_NAME} has a link-local ipv6 address configured...."
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# Status of link local address is not populated in STATE_DB
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while true; do
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HAS_LL=$(ip -6 addr show ${IFACE_NAME} scope link 2> /dev/null)
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RC=$?
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if [[ ${RC} == "0" ]] && [[ ! -z ${HAS_LL} ]]; then
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break
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fi
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sleep 1
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done
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echo "Link-Local address is configured on ${IFACE_NAME}"
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}
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# Wait for all interfaces with IPv4 addresses to be up and ready
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# dhcp6relay binds to ipv6 addresses configured on these vlan ifaces
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# Thus check if they are ready before launching dhcp6relay
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{% for (name, prefix) in INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %}
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wait_until_iface_ready {{ name }} {{ prefix }}
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{% endif %}
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{% endfor %}
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{% for (name, prefix) in VLAN_INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %}
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wait_until_iface_ready {{ name }} {{ prefix }}
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{% endif %}
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{% if prefix | ipv6 %}
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{% if DHCP_RELAY and name in DHCP_RELAY %}
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wait_until_iface_ready {{ name }} {{ prefix }}
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check_for_ipv6_link_local {{ name }}
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{% endif %}
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{% endif %}
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{% endfor %}
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{% for (name, prefix) in PORTCHANNEL_INTERFACE|pfx_filter %}
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{% if prefix | ipv4 %}
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wait_until_iface_ready {{ name }} {{ prefix }}
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{% endif %}
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{% endfor %}
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# Wait 10 seconds for the rest of interfaces to get added/populated.
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# dhcrelay listens on each of the interfaces (in addition to the port
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# channels and vlan interfaces)
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sleep 10
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