kernel

Documentation

Overview

Package kernel contains funcs that interact with the kernel (sycalls, netlink).

Index

• type Interfaces
  • func (k *Interfaces) AddrSubscribe(ch chan<- netlink.AddrUpdate, done <-chan struct{}) error
  • func (k *Interfaces) CreateTAP(name string) (int, error)
  • func (k *Interfaces) DeleteIP(name string, ip string, prefixLen int) error
  • func (k *Interfaces) LinkAdd(link netlink.Link) error
  • func (k *Interfaces) LinkByIndex(idx int) (netlink.Link, error)
  • func (k *Interfaces) LinkByName(name string) (netlink.Link, error)
  • func (k *Interfaces) LinkList() ([]netlink.Link, error)
  • func (k *Interfaces) LinkModify(link netlink.Link) error
  • func (k *Interfaces) LinkSetDown(link netlink.Link) error
  • func (k *Interfaces) LinkSetMaster(member netlink.Link, link netlink.Link) error
  • func (k *Interfaces) LinkSetNoMaster(link netlink.Link) error
  • func (k *Interfaces) LinkSetUp(link netlink.Link) error
  • func (k *Interfaces) LinkSubscribe(ch chan<- netlink.LinkUpdate, done <-chan struct{}) error
  • func (k *Interfaces) NeighSubscribe(ch chan<- netlink.NeighUpdate, done <-chan struct{}) error
  • func (k *Interfaces) ReplaceIP(name string, ip string, prefixLen int) error
  • func (k *Interfaces) SetHWAddr(name string, addr string) error
  • func (k *Interfaces) SetState(name string, up bool) error
• type PacketMetadata

Types

type Interfaces

type Interfaces struct{}

Interfaces contains methods for modifying networking interfaces.

func (*Interfaces) AddrSubscribe

func (k *Interfaces) AddrSubscribe(ch chan<- netlink.AddrUpdate, done <-chan struct{}) error

AddrSubscribe subscribes to address changes for all interfaces.

func (*Interfaces) CreateTAP

func (k *Interfaces) CreateTAP(name string) (int, error)

CreateTAP creates kernel TAP interface.

func (*Interfaces) DeleteIP

func (k *Interfaces) DeleteIP(name string, ip string, prefixLen int) error

DeleteIP delete an IP addresses from a network interface.

func (*Interfaces) LinkAdd

func (k *Interfaces) LinkAdd(link netlink.Link) error

LinkAdd adds a new network interface.

func (*Interfaces) LinkByIndex

func (k *Interfaces) LinkByIndex(idx int) (netlink.Link, error)

LinkByIndex finds a link by its index.

func (*Interfaces) LinkByName

func (k *Interfaces) LinkByName(name string) (netlink.Link, error)

LinkByName returns a network interface by name.

func (*Interfaces) LinkList

func (k *Interfaces) LinkList() ([]netlink.Link, error)

LinkList lists all Linux network interfaces.

func (*Interfaces) LinkModify

func (k *Interfaces) LinkModify(link netlink.Link) error

LinkModify modifies the link.

func (*Interfaces) LinkSetDown

func (k *Interfaces) LinkSetDown(link netlink.Link) error

LinkSetDown sets the admin state to down.

func (*Interfaces) LinkSetMaster

func (k *Interfaces) LinkSetMaster(member netlink.Link, link netlink.Link) error

LinkSetMaster sets the member link's master to the other link.

func (*Interfaces) LinkSetNoMaster

func (k *Interfaces) LinkSetNoMaster(link netlink.Link) error

LinkSetNoMaster removes the master from the link.

func (*Interfaces) LinkSetUp

func (k *Interfaces) LinkSetUp(link netlink.Link) error

LinkSetDown sets the admin state to up.

func (*Interfaces) LinkSubscribe

func (k *Interfaces) LinkSubscribe(ch chan<- netlink.LinkUpdate, done <-chan struct{}) error

LinkSubscribe subscribes to link status for all interfaces.

func (*Interfaces) NeighSubscribe

func (k *Interfaces) NeighSubscribe(ch chan<- netlink.NeighUpdate, done <-chan struct{}) error

NeighSubscribe subscribes to neighbor table updates.

func (*Interfaces) ReplaceIP

func (k *Interfaces) ReplaceIP(name string, ip string, prefixLen int) error

ReplaceIP sets the IP addresses of a network interface.

func (*Interfaces) SetHWAddr

func (k *Interfaces) SetHWAddr(name string, addr string) error

SetHWAddr sets the MAC address of a network interface.

func (*Interfaces) SetState

func (k *Interfaces) SetState(name string, up bool) error

SetState sets a links up or down.

type PacketMetadata

type PacketMetadata struct {
	SrcIfIndex int16
	DstIfIndex int16
	Context    uint32 // Context is extra value that can be set by the forwarding pipeline.
}