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ovs.go
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ovs.go
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/*
* Copyright (C) 2016 Red Hat, Inc.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package mappings
import (
"github.com/skydive-project/skydive/flow"
"github.com/skydive-project/skydive/flow/packet"
"github.com/skydive-project/skydive/logging"
"github.com/skydive-project/skydive/topology/graph"
)
type OvsFlowEnhancer struct {
Graph *graph.Graph
}
func (gfe *OvsFlowEnhancer) getNodeUUID(mac string) string {
if packet.IsBroadcastMac(mac) || packet.IsMulticastMac(mac) {
return "*"
}
gfe.Graph.Lock()
defer gfe.Graph.Unlock()
intfs := gfe.Graph.LookupNodes(graph.Metadata{"ExtID/attached-mac": mac})
if len(intfs) > 1 {
logging.GetLogger().Infof("OvsFlowEnhancer found more than one interface for the mac: %s", mac)
} else if len(intfs) == 1 {
return string(intfs[0].ID)
}
return ""
}
func (gfe *OvsFlowEnhancer) Enhance(f *flow.Flow) {
var eth *flow.FlowEndpointsStatistics
if f.IfSrcNodeUUID == "" || f.IfDstNodeUUID == "" {
eth = f.GetStatistics().GetEndpointsType(flow.FlowEndpointType_ETHERNET)
if eth == nil {
return
}
}
if f.IfSrcNodeUUID == "" {
f.IfSrcNodeUUID = gfe.getNodeUUID(eth.AB.Value)
}
if f.IfDstNodeUUID == "" {
f.IfDstNodeUUID = gfe.getNodeUUID(eth.BA.Value)
}
}
func NewOvsFlowEnhancer(g *graph.Graph) *OvsFlowEnhancer {
return &OvsFlowEnhancer{
Graph: g,
}
}