util

Documentation

Index

• func AddDefaultRoute(gw net.IP, dev netlink.Link) error
• func AddHostRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error
• func AddRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error
• func DelLinkByName(ifName string) error
• func LoadNet(path string, n interface{}) error
• func ParseCIDR(s string) (*net.IPNet, error)
• func SetNS(f *os.File, flags uintptr) error
• func SetupVeth(entropy, contVethName string, ipn *net.IPNet, hostNS *os.File) (hostVeth, contVeth netlink.Link, err error)
• func WithNetNSPath(nspath string, f func(*os.File) error) error
• type Net

Functions

func AddDefaultRoute

func AddDefaultRoute(gw net.IP, dev netlink.Link) error

AddDefaultRoute sets the default route on the given gateway.

func AddHostRoute

func AddHostRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error

AddHostRoute adds a host-scoped route to a device.

func AddRoute

func AddRoute(ipn *net.IPNet, gw net.IP, dev netlink.Link) error

AddRoute adds a universally-scoped route to a device.

func DelLinkByName

func DelLinkByName(ifName string) error

DelLinkByName removes an interface link.

func LoadNet

func LoadNet(path string, n interface{}) error

LoadNet loads a JSON-encoded Net from the filesystem.

func ParseCIDR

func ParseCIDR(s string) (*net.IPNet, error)

ParseCIDR invokes net.ParseCIDR.

func SetNS

func SetNS(f *os.File, flags uintptr) error

SetNS sets the network namespace on a target file.

func SetupVeth

func SetupVeth(entropy, contVethName string, ipn *net.IPNet, hostNS *os.File) (hostVeth, contVeth netlink.Link, err error)

SetupVeth sets up a virtual ethernet link. Should be in container netns. TODO(eyakubovich): get rid of entropy and ask kernel to pick name via pattern

func WithNetNSPath

func WithNetNSPath(nspath string, f func(*os.File) error) error

WithNetNSPath executes the passed closure under the given network namespace, restoring the original namespace afterwards.

Types

type Net

type Net struct {
	Filename string
	Name     string `json:"name,omitempty"`
	Type     string `json:"type,omitempty"`
	IPAlloc  struct {
		Type   string `json:"type,omitempty"`
		Subnet string `json:"subnet,omitempty"`
	} `json:"ipAlloc,omitempty"`
	Routes []string `json:"routes,omitempty"`
}

Net describes a network.