func NetInit(stn *SandboxNetwork, htn *HostNetwork, log *logging.Logger) error {
if os.Getpid() == 1 {
panic(errors.New("Cannot use NetInit from child."))
}
// Seed random number generator (poorly but we're not doing crypto)
rand.Seed(time.Now().Unix() ^ int64(os.Getpid()))
log.Info("Configuring host veth pair '%s' with: %s", stn.VethHost, stn.Ip+"/"+htn.Class)
/*
// Fetch the bridge from the ifname
br, err := tenus.BridgeFromName(ozDefaultInterfaceBridge)
if err != nil {
return fmt.Errorf("Unable to attach to bridge interface %, %s.", ozDefaultInterfaceBridge, err)
}
*/
// Make sure the bridge is configured and the link is up
// This really shouldn't be needed, but Network-Manager is a PITA
// and even if you actualy ignore the interface there's a race
// between the interface being created and setting it's hwaddr
//if err := htn.configureBridgeInterface(log); err != nil {
// return fmt.Errorf("Unable to reconfigure bridge: %+v", err)
//}
// Create the veth pair
veth, err := tenus.NewVethPairWithOptions(stn.VethHost, tenus.VethOptions{PeerName: stn.VethGuest})
if err != nil {
return fmt.Errorf("Unable to create veth pair %s, %s.", stn.VethHost, err)
}
// Fetch the newly created hostside veth
vethIf, err := net.InterfaceByName(stn.VethHost)
if err != nil {
return fmt.Errorf("Unable to fetch veth pair %s, %s.", stn.VethHost, err)
}
// Add the host side veth to the bridge
if err := htn.Interface.AddSlaveIfc(vethIf); err != nil {
return fmt.Errorf("Unable to add veth pair %s to bridge, %s.", stn.VethHost, err)
}
// Bring the host side veth interface up
if err := veth.SetLinkUp(); err != nil {
return fmt.Errorf("Unable to bring veth pair %s up, %s.", stn.VethHost, err)
}
stn.Veth = veth
return nil
}
func NetInit(stn *SandboxNetwork, htn *HostNetwork, log *logging.Logger) error {
if os.Getpid() == 1 {
panic(errors.New("Cannot use NetInit from child."))
}
// Seed random number generator (poorly but we're not doing crypto)
rand.Seed(time.Now().Unix() ^ int64(os.Getpid()))
log.Info("Configuring host veth pair '%s' with: %s", stn.VethHost, stn.Ip+"/"+htn.Class)
// Create the veth pair
veth, err := tenus.NewVethPairWithOptions(stn.VethHost, tenus.VethOptions{PeerName: stn.VethGuest})
if err != nil {
return fmt.Errorf("Unable to create veth pair %s, %s.", stn.VethHost, err)
}
// Fetch the newly created hostside veth
vethIf, err := net.InterfaceByName(stn.VethHost)
if err != nil {
return fmt.Errorf("Unable to fetch veth pair %s, %s.", stn.VethHost, err)
}
// Add the host side veth to the bridge
if err := htn.Interface.AddSlaveIfc(vethIf); err != nil {
return fmt.Errorf("Unable to add veth pair %s to bridge, %s.", stn.VethHost, err)
}
// Bring the host side veth interface up
if err := veth.SetLinkUp(); err != nil {
return fmt.Errorf("Unable to bring veth pair %s up, %s.", stn.VethHost, err)
}
stn.Veth = veth
return nil
}
func main() {
// CREATE BRIDGE AND BRING IT UP
br, err := tenus.NewBridgeWithName("mybridge")
if err != nil {
log.Fatal(err)
}
ip, ipNet, err := net.ParseCIDR("10.0.41.1/16")
if err != nil {
log.Fatal(err)
}
if err := br.SetLinkIp(ip, ipNet); err != nil {
fmt.Println(err)
}
if err = br.SetLinkUp(); err != nil {
fmt.Println(err)
}
// CREATE VETH PAIR
veth, err := tenus.NewVethPairWithOptions("myveth01", tenus.VethOptions{PeerName: "myveth02"})
if err != nil {
log.Fatal(err)
}
// ASSIGN AN IP TO MYVETH01
ip, ipNet, err = net.ParseCIDR("10.0.41.2/16")
if err != nil {
log.Fatal(err)
}
if err = veth.SetLinkIp(ip, ipNet); err != nil {
fmt.Println(err)
}
// ASSIGN AN IP TO MYVETH02
ip, ipNet, err = net.ParseCIDR("10.0.41.3/16")
if err != nil {
log.Fatal(err)
}
if err := veth.SetPeerLinkIp(ip, ipNet); err != nil {
fmt.Println(err)
}
// ADD MYVETH01 INTERFACE TO THE MYBRIDGE BRIDGE AND BRING IT UP
// we could also simply do myveth01 := veth.NetInterface()
myveth01, err := net.InterfaceByName("myveth01")
if err != nil {
log.Fatal(err)
}
if err = br.AddSlaveIfc(myveth01); err != nil {
fmt.Println(err)
}
if err = veth.SetLinkUp(); err != nil {
fmt.Println(err)
}
// ADD MYVETH02 INTERFACE TO THE MYBRIDGE BRIDGE AND BRING IT UP
// we could also simply do myveth01 := veth.NetInterface()
myveth02, err := net.InterfaceByName("myveth02")
if err != nil {
log.Fatal(err)
}
if err = br.AddSlaveIfc(myveth02); err != nil {
fmt.Println(err)
}
if err = veth.SetPeerLinkUp(); err != nil {
fmt.Println(err)
}
// CREATE MACVLAN INTERFACE AND BRING IT UP
macvlan, err := tenus.NewMacVlanLinkWithOptions("eth0", tenus.MacVlanOptions{Mode: "bridge", MacVlanDev: "macvlan01"})
if err != nil {
log.Fatal(err)
}
if err := macvlan.SetLinkUp(); err != nil {
fmt.Println(err)
}
// CREATE VLAN INTERFACE AND BRING IT UP
vlan, err := tenus.NewVlanLinkWithOptions("eth1", tenus.VlanOptions{Id: 10, VlanDev: "vlan01"})
if err != nil {
log.Fatal(err)
}
if err = vlan.SetLinkUp(); err != nil {
fmt.Println(err)
}
}
func main() {
// CREATE BRIDGE AND BRING IT UP
br, err := tenus.NewBridgeWithName("vethbridge")
if err != nil {
log.Fatal(err)
}
brIp, brIpNet, err := net.ParseCIDR("10.0.41.1/16")
if err != nil {
log.Fatal(err)
}
if err := br.SetLinkIp(brIp, brIpNet); err != nil {
fmt.Println(err)
}
if err = br.SetLinkUp(); err != nil {
fmt.Println(err)
}
// CREATE VETH PAIR
veth, err := tenus.NewVethPairWithOptions("myveth01", tenus.VethOptions{PeerName: "myveth02"})
if err != nil {
log.Fatal(err)
}
// ASSIGN IP ADDRESS TO THE HOST VETH INTERFACE
vethHostIp, vethHostIpNet, err := net.ParseCIDR("10.0.41.2/16")
if err != nil {
log.Fatal(err)
}
if err := veth.SetLinkIp(vethHostIp, vethHostIpNet); err != nil {
fmt.Println(err)
}
// ADD MYVETH01 INTERFACE TO THE MYBRIDGE BRIDGE
myveth01, err := net.InterfaceByName("myveth01")
if err != nil {
log.Fatal(err)
}
if err = br.AddSlaveIfc(myveth01); err != nil {
fmt.Println(err)
}
if err = veth.SetLinkUp(); err != nil {
fmt.Println(err)
}
// PASS VETH PEER INTERFACE TO A RUNNING DOCKER BY PID
pid, err := tenus.DockerPidByName("vethdckr", "/var/run/docker.sock")
if err != nil {
fmt.Println(err)
}
if err := veth.SetPeerLinkNsPid(pid); err != nil {
log.Fatal(err)
}
// ALLOCATE AND SET IP FOR THE NEW DOCKER INTERFACE
vethGuestIp, vethGuestIpNet, err := net.ParseCIDR("10.0.41.5/16")
if err != nil {
log.Fatal(err)
}
if err := veth.SetPeerLinkNetInNs(pid, vethGuestIp, vethGuestIpNet, nil); err != nil {
log.Fatal(err)
}
}