network

Documentation

Index

• Constants
• Variables
• func Cleanup(tapDevice string) error
• type DynamicNetwork
  • func (n DynamicNetwork) NetworkSetup(uid uint32, gid uint32) (*UnikernelNetworkInfo, error)
• type Interface
• type Manager
  • func NewNetworkManager(networkType string) (Manager, error)
• type StaticNetwork
  • func (n StaticNetwork) NetworkSetup(uid uint32, gid uint32) (*UnikernelNetworkInfo, error)
• type UnikernelNetworkInfo

Constants

const (
	DefaultInterface = "eth0" // FIXME: Discover the veth endpoint name instead of using default "eth0". See: https://github.com/urunc-dev/urunc/issues/14
	DefaultTap       = "tapX_urunc"
)

Variables

var StaticIPAddr = fmt.Sprintf("%s/24", constants.StaticNetworkTapIP)

Functions

func Cleanup

func Cleanup(tapDevice string) error

Types

type DynamicNetwork

type DynamicNetwork struct {
}

func (DynamicNetwork) NetworkSetup

func (n DynamicNetwork) NetworkSetup(uid uint32, gid uint32) (*UnikernelNetworkInfo, error)

NetworkSetup checks if any tap device is available in the current netns. If it is, it assumes a running unikernel is present in the current netns and returns an error, because network functionality for more than one unikernels is not yet implemented. If no TAP devices are available in the current netns, it creates a new tap device and sets TC rules between the veth interface and the tap device inside the namespace.

FIXME: CUrrently only one tap device per netns can provide functional networking. We need to find a proper way to handle networking for multiple unikernels in the same pod/network namespace. See: https://github.com/urunc-dev/urunc/issues/13

type Interface

type Interface struct {
	IP             string
	DefaultGateway string
	Mask           string
	Interface      string
	MAC            string
}

type Manager

type Manager interface {
	NetworkSetup(uid uint32, gid uint32) (*UnikernelNetworkInfo, error)
}

func NewNetworkManager

func NewNetworkManager(networkType string) (Manager, error)

type StaticNetwork

type StaticNetwork struct {
}

func (StaticNetwork) NetworkSetup

func (n StaticNetwork) NetworkSetup(uid uint32, gid uint32) (*UnikernelNetworkInfo, error)

type UnikernelNetworkInfo

type UnikernelNetworkInfo struct {
	TapDevice string
	EthDevice Interface
}