ip

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 DelLinkByNameAddr(ifName string, family int) (*net.IPNet, error)
• func Network(ipn *net.IPNet) *net.IPNet
• func NextIP(ip net.IP) net.IP
• func ParseCIDR(s string) (*net.IPNet, error)
• func PrevIP(ip net.IP) net.IP
• func RandomVethName(entropy string) string
• func SetupIPMasq(ipn *net.IPNet, chain string) error
• func SetupVeth(entropy, contVethName string, mtu int, hostNS *os.File) (hostVeth, contVeth netlink.Link, err error)
• func TeardownIPMasq(ipn *net.IPNet, chain string) error
• type IPNet
  • func (n IPNet) MarshalJSON() ([]byte, error)
  • func (n *IPNet) UnmarshalJSON(data []byte) error

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 DelLinkByNameAddr

func DelLinkByNameAddr(ifName string, family int) (*net.IPNet, error)

DelLinkByNameAddr remove an interface returns its IP address of the specified family

func Network

func Network(ipn *net.IPNet) *net.IPNet

Network masks off the host portion of the IP

func NextIP

func NextIP(ip net.IP) net.IP

NextIP returns IP incremented by 1

func ParseCIDR

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

ParseCIDR takes a string like "10.2.3.1/24" and return IPNet with "10.2.3.1" and /24 mask

func PrevIP

func PrevIP(ip net.IP) net.IP

PrevIP returns IP decremented by 1

func RandomVethName

func RandomVethName(entropy string) string

RandomVethName returns string "veth" with random prefix (hashed from entropy)

func SetupIPMasq

func SetupIPMasq(ipn *net.IPNet, chain string) error

SetupIPMasq installs iptables rules to masquerade traffic coming from ipn and going outside of it

func SetupVeth

func SetupVeth(entropy, contVethName string, mtu int, 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 TeardownIPMasq

func TeardownIPMasq(ipn *net.IPNet, chain string) error

TeardownIPMasq undoes the effects of SetupIPMasq

Types

type IPNet

type IPNet net.IPNet

like net.IPNet but adds JSON marshalling and unmarshalling

func (IPNet) MarshalJSON

func (n IPNet) MarshalJSON() ([]byte, error)

func (*IPNet) UnmarshalJSON

func (n *IPNet) UnmarshalJSON(data []byte) error