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86 lines
1.9 KiB
Bash
86 lines
1.9 KiB
Bash
#!/bin/bash
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#============================================================================
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# ${XEN_SCRIPT_DIR}/vif-openvswitch
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#
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# Script for configuring a vif using Open vSwitch.
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#
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# Usage:
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# vif-openvswitch (add|remove|online|offline)
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#
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# Environment vars:
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# vif vif interface name (required).
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# XENBUS_PATH path to this device's details in the XenStore (required).
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#
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# Read from the store:
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# bridge bridge to add the vif to (optional). Defaults to searching for the
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# bridge itself.
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#
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# up:
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# Enslaves the vif interface to the bridge.
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#
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# down:
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# Removes the vif interface from the bridge.
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#============================================================================
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dir=$(dirname "$0")
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. "$dir/vif-common.sh"
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bridge=${bridge:-}
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bridge=$(xenstore_read_default "$XENBUS_PATH/bridge" "$bridge")
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if [ -z "${bridge}" ]
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then
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bridge=$(ovs-vsctl listbr | cut -d "
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" -f 1)
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if [ -z "${bridge}" ]
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then
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fatal "Could not find bridge and none was specified"
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fi
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fi
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tag=${tag:-}
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# Domain on VLAN tagged bridge?
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RET=0
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ovs-vsctl list-br | grep -c ${bridge} 1>/dev/null 2>&1 || RET=1
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if [ $RET -eq 1 ]
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then
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if [[ $bridge =~ \.[[:digit:]]{1,4}$ ]]
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then
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tag=$(echo ${bridge} | cut -d "." -f 2)
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bridge=$(echo ${bridge} | cut -d "." -f 1)
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else
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fatal "Could not find bridge device ${bridge}"
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fi
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fi
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RET=0
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ovs-vsctl list-br | grep -c ${bridge} 1>/dev/null 2>&1 || RET=1
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if [ $RET -eq 1 ]
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then
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fatal "Could not find bridge device ${bridge}"
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fi
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log debug "Successful vif-bridge $command for ${vif}, bridge ${bridge}."
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case "$command" in
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online)
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ifconfig "${vif}" 0.0.0.0 up
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if [ -z $tag ]
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then
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ovs-vsctl -- --may-exist add-port ${bridge} ${vif}
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else
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ovs-vsctl -- --may-exist add-port ${bridge} ${vif} tag=${tag}
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fi
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;;
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offline)
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ovs-vsctl -- --if-exists del-port ${bridge} ${vif}
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ifconfig "$vif" 0.0.0.0 down
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;;
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esac
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if [ "$command" == "online" ]
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then
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success
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fi
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