func (u *NetLinkProbe) handleIntfIsBond(intf *graph.Node, link netlink.Link) {
if link.Type() != "bond" {
return
}
bond := link.(*netlink.Bond)
u.Graph.AddMetadata(intf, "BondMode", bond.Mode.String())
// TODO(safchain) Add more info there like xmit_hash_policy
}
func (u *NetLinkProbe) handleIntfIsVeth(intf *graph.Node, link netlink.Link) {
if link.Type() != "veth" {
return
}
stats, err := ethtool.Stats(link.Attrs().Name)
if err != nil {
logging.GetLogger().Errorf("Unable get stats from ethtool: %s", err.Error())
return
}
if index, ok := stats["peer_ifindex"]; ok {
peerResolver := func() bool {
// re get the interface from the graph since the interface could have been deleted
if u.Graph.GetNode(intf.ID) == nil {
return false
}
// got more than 1 peer, unable to find the right one, wait for the other to discover
peer := u.Graph.LookupFirstNode(graph.Metadata{"IfIndex": int64(index), "Type": "veth"})
if peer != nil && !u.Graph.AreLinked(peer, intf) {
u.Graph.Link(peer, intf, graph.Metadata{"RelationType": "layer2", "Type": "veth"})
return true
}
return false
}
if int64(index) > intf.Metadata()["IfIndex"].(int64) {
ok := peerResolver()
if !ok {
// retry few seconds later since the right peer can be insert later
go func() {
ok := false
try := 0
for {
if ok || try > 10 {
return
}
time.Sleep(time.Millisecond * 200)
u.Graph.Lock()
ok = peerResolver()
u.Graph.Unlock()
try++
}
}()
}
}
}
}
func vxlanLinksIncompat(l1, l2 netlink.Link) string {
if l1.Type() != l2.Type() {
return fmt.Sprintf("link type: %v vs %v", l1.Type(), l2.Type())
}
v1 := l1.(*netlink.Vxlan)
v2 := l2.(*netlink.Vxlan)
if v1.VxlanId != v2.VxlanId {
return fmt.Sprintf("vni: %v vs %v", v1.VxlanId, v2.VxlanId)
}
if v1.VtepDevIndex > 0 && v2.VtepDevIndex > 0 && v1.VtepDevIndex != v2.VtepDevIndex {
return fmt.Sprintf("vtep (external) interface: %v vs %v", v1.VtepDevIndex, v2.VtepDevIndex)
}
if len(v1.SrcAddr) > 0 && len(v2.SrcAddr) > 0 && !v1.SrcAddr.Equal(v2.SrcAddr) {
return fmt.Sprintf("vtep (external) IP: %v vs %v", v1.SrcAddr, v2.SrcAddr)
}
if len(v1.Group) > 0 && len(v2.Group) > 0 && !v1.Group.Equal(v2.Group) {
return fmt.Sprintf("group address: %v vs %v", v1.Group, v2.Group)
}
if v1.L2miss != v2.L2miss {
return fmt.Sprintf("l2miss: %v vs %v", v1.L2miss, v2.L2miss)
}
if v1.Port > 0 && v2.Port > 0 && v1.Port != v2.Port {
return fmt.Sprintf("port: %v vs %v", v1.Port, v2.Port)
}
return ""
}
func (u *NetLinkProbe) handleIntfIsVeth(intf *graph.Node, link netlink.Link) {
if link.Type() != "veth" {
return
}
if index, ok := intf.Metadata()["PeerIfIndex"]; ok {
peerResolver := func() error {
// re get the interface from the graph since the interface could have been deleted
if u.Graph.GetNode(intf.ID) == nil {
return errors.New("Node not found")
}
// got more than 1 peer, unable to find the right one, wait for the other to discover
peer := u.Graph.LookupFirstNode(graph.Metadata{"IfIndex": index.(int64), "Type": "veth"})
if peer != nil && !u.Graph.AreLinked(peer, intf) {
u.Graph.Link(peer, intf, graph.Metadata{"RelationType": "layer2", "Type": "veth"})
return nil
}
return errors.New("Nodes not linked")
}
if index.(int64) > intf.Metadata()["IfIndex"].(int64) {
if err := peerResolver(); err != nil {
retryFnc := func() error {
if u.isRunning() == false {
return nil
}
u.Graph.Lock()
defer u.Graph.Unlock()
return peerResolver()
}
go common.Retry(retryFnc, 10, 200*time.Millisecond)
}
}
}
}
func (u *NetLinkProbe) addLinkToTopology(link netlink.Link) {
logging.GetLogger().Debugf("Link \"%s(%d)\" added", link.Attrs().Name, link.Attrs().Index)
u.Graph.Lock()
defer u.Graph.Unlock()
driver, _ := ethtool.DriverName(link.Attrs().Name)
if driver == "" && link.Type() == "bridge" {
driver = "bridge"
}
metadata := graph.Metadata{
"Name": link.Attrs().Name,
"Type": link.Type(),
"IfIndex": int64(link.Attrs().Index),
"MAC": link.Attrs().HardwareAddr.String(),
"MTU": int64(link.Attrs().MTU),
"Driver": driver,
}
/*ipv4 := u.getLinkIPV4Addr(link)
if len(ipv4) > 0 {
metadata["IPV4"] = ipv4
}*/
if vlan, ok := link.(*netlink.Vlan); ok {
metadata["Vlan"] = vlan.VlanId
}
if (link.Attrs().Flags & net.FlagUp) > 0 {
metadata["State"] = "UP"
} else {
metadata["State"] = "DOWN"
}
var intf *graph.Node
switch driver {
case "bridge":
intf = u.addBridgeLinkToTopology(link, metadata)
case "openvswitch":
intf = u.addOvsLinkToTopology(link, metadata)
// always prefer Type from ovs
metadata["Type"] = intf.Metadata()["Type"]
default:
intf = u.addGenericLinkToTopology(link, metadata)
}
// merge metadata if the interface returned is not a new one
if intf != nil {
m := intf.Metadata()
updated := false
for k, nv := range metadata {
if ov, ok := m[k]; ok && nv == ov {
continue
}
m[k] = nv
updated = true
}
if updated {
u.Graph.SetMetadata(intf, m)
}
}
}