Example #1
0
File: daemon.go Project: RoPe93/oz
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

}
Example #2
0
File: daemon.go Project: tdr130/oz
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

}
Example #3
0
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)
	}
}
Example #4
0
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)
	}
}