network

Documentation

Overview

Package ipam is a very simple IPAM it administers a single CIDR range, e.g "1000::/124".

The functions are NOT thread safe.

Index

• func IPExists(ip net.IP) (bool, error)
• func LinkAddAddr(linkName, IP string) error
• func LinkAddGateway(linkName, gatewayIP string) error
• func LinkRename(old, new string) error
• func LinkSetMaster(linkName, masterName string) error
• func LinkSetNsByFile(filename, linkName string) error
• func LinkSetup(linkName string) error
• func MountNewNetworkNamespace(nsTarget string) (filesystem.Unmounter, error)
• func SetupBridge(name string) error
• func SetupVirtualEthernet(name, peer string) error
• type IPAM
  • func NewIPAM(fn, cidr string) (*IPAM, error)
  • func (i *IPAM) Allocate() (net.IP, error)
  • func (i *IPAM) Free(a net.IP)
  • func (i *IPAM) MarshalJSON() ([]byte, error)
  • func (i *IPAM) Reserve(a net.IP) error
  • func (i *IPAM) ReserveFirstAndLast()
  • func (i *IPAM) Unallocated() uint32
  • func (i *IPAM) UnmarshalJSON(bs []byte) error
• type Releaser
• type Unsetter
  • func SetNetNSByFile(filename string) (Unsetter, error)

Functions

func IPExists

func IPExists(ip net.IP) (bool, error)

func LinkAddAddr

func LinkAddAddr(linkName, IP string) error

func LinkAddGateway

func LinkAddGateway(linkName, gatewayIP string) error

func LinkRename

func LinkRename(old, new string) error

func LinkSetMaster

func LinkSetMaster(linkName, masterName string) error

func LinkSetNsByFile

func LinkSetNsByFile(filename, linkName string) error

func LinkSetup

func LinkSetup(linkName string) error

func MountNewNetworkNamespace

func MountNewNetworkNamespace(nsTarget string) (filesystem.Unmounter, error)

func SetupBridge

func SetupBridge(name string) error

func SetupVirtualEthernet

func SetupVirtualEthernet(name, peer string) error

Types

type IPAM

type IPAM struct {
	// contains filtered or unexported fields
}

IPAM holds the ipam state

func NewIPAM

func NewIPAM(fn, cidr string) (*IPAM, error)

New creates a new IPAM for the passed CIDR. Error if the passed CIDR is invalid.

func (*IPAM) Allocate

func (i *IPAM) Allocate() (net.IP, error)

Allocate allocates a new address. An error is returned if there is no addresses left.

func (*IPAM) Free

func (i *IPAM) Free(a net.IP)

Free frees an allocated address. To free a non-allocated address is a no-op.

func (*IPAM) MarshalJSON

func (i *IPAM) MarshalJSON() ([]byte, error)

func (*IPAM) Reserve

func (i *IPAM) Reserve(a net.IP) error

Reserve reserves an address. Error if the address is outside the CIDR or if the address is allocated already.

func (*IPAM) ReserveFirstAndLast

func (i *IPAM) ReserveFirstAndLast()

ReserveFirstAndLast reserves the first and last address. These are valid addresses but some programs may refuse to use them. Note that the number of Unallocated addresses may become zero.

func (*IPAM) Unallocated

func (i *IPAM) Unallocated() uint32

Unallocated returns the number of unallocated addresses.

func (*IPAM) UnmarshalJSON

func (i *IPAM) UnmarshalJSON(bs []byte) error

type Releaser

type Releaser func() error

type Unsetter

type Unsetter func() error

func SetNetNSByFile

func SetNetNSByFile(filename string) (Unsetter, error)