route

Documentation

Index

• Variables
• type Client
  • func NewClient(serviceCIDR *net.IPNet, networkConfig *config.NetworkConfig, noSNAT bool) (*Client, error)
  • func (c *Client) AddRoutes(podCIDR *net.IPNet, nodeName string, nodeIP, nodeGwIP net.IP) error
  • func (c *Client) AddSNATRule(snatIP net.IP, mark uint32) error
  • func (c *Client) DeleteRoutes(podCIDR *net.IPNet) error
  • func (c *Client) DeleteSNATRule(mark uint32) error
  • func (c *Client) Initialize(nodeConfig *config.NodeConfig, done func()) error
  • func (c *Client) MigrateRoutesToGw(linkName string) error
  • func (c *Client) Reconcile(podCIDRs []string) error
  • func (c *Client) Run(stopCh <-chan struct{})
  • func (c *Client) UnMigrateRoutesFromGw(route *net.IPNet, linkName string) error
• type Interface

Variables

var (

	// IPTablesSyncInterval is exported so that sync interval can be configured for running integration test with
	// smaller values. It is meant to be used internally by Run.
	IPTablesSyncInterval = 60 * time.Second
)

Types

type Client

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

Client takes care of routing container packets in host network, coordinating ip route, ip rule, iptables and ipset.

func NewClient

func NewClient(serviceCIDR *net.IPNet, networkConfig *config.NetworkConfig, noSNAT bool) (*Client, error)

NewClient returns a route client. TODO: remove param serviceCIDR after kube-proxy is replaced by Antrea Proxy. This param is not used in this file; leaving it here is to be compatible with the implementation on Windows.

func (*Client) AddRoutes

func (c *Client) AddRoutes(podCIDR *net.IPNet, nodeName string, nodeIP, nodeGwIP net.IP) error

AddRoutes adds routes to a new podCIDR. It overrides the routes if they already exist.

func (*Client) AddSNATRule

func (c *Client) AddSNATRule(snatIP net.IP, mark uint32) error

func (*Client) DeleteRoutes

func (c *Client) DeleteRoutes(podCIDR *net.IPNet) error

DeleteRoutes deletes routes to a PodCIDR. It does nothing if the routes doesn't exist.

func (*Client) DeleteSNATRule

func (c *Client) DeleteSNATRule(mark uint32) error

func (*Client) Initialize

func (c *Client) Initialize(nodeConfig *config.NodeConfig, done func()) error

Initialize initializes all infrastructures required to route container packets in host network. It is idempotent and can be safely called on every startup.

func (*Client) MigrateRoutesToGw

func (c *Client) MigrateRoutesToGw(linkName string) error

MigrateRoutesToGw moves routes (including assigned IP addresses if any) from link linkName to host gateway.

func (*Client) Reconcile

func (c *Client) Reconcile(podCIDRs []string) error

Reconcile removes orphaned podCIDRs from ipset and removes routes to orphaned podCIDRs based on the desired podCIDRs.

func (*Client) Run

func (c *Client) Run(stopCh <-chan struct{})

Run waits for iptables initialization, then periodically syncs iptables rules. It will not return until stopCh is closed.

func (*Client) UnMigrateRoutesFromGw

func (c *Client) UnMigrateRoutesFromGw(route *net.IPNet, linkName string) error

UnMigrateRoutesFromGw moves route from gw to link linkName if provided; otherwise route is deleted

type Interface

type Interface interface {
	// Initialize should initialize all infrastructures required to route container packets in host network.
	// It should be idempotent and can be safely called on every startup.
	Initialize(nodeConfig *config.NodeConfig, done func()) error

	// Reconcile should remove orphaned routes and related configuration based on the desired podCIDRs. If IPv6 is enabled
	// in the cluster, Reconcile should also remove the orphaned IPv6 neighbors.
	Reconcile(podCIDRs []string) error

	// AddRoutes should add routes to the provided podCIDR.
	// It should override the routes if they already exist, without error.
	AddRoutes(podCIDR *net.IPNet, peerNodeName string, peerNodeIP, peerGwIP net.IP) error

	// DeleteRoutes should delete routes to the provided podCIDR.
	// It should do nothing if the routes don't exist, without error.
	DeleteRoutes(podCIDR *net.IPNet) error

	// MigrateRoutesToGw should move routes from device linkname to local gateway.
	MigrateRoutesToGw(linkName string) error

	// UnMigrateRoutesFromGw should move routes back from local gateway to original device linkName
	// if linkName is nil, it should remove the routes.
	UnMigrateRoutesFromGw(route *net.IPNet, linkName string) error

	// AddSNATRule should add rule to SNAT outgoing traffic with the mark, using the provided SNAT IP.
	AddSNATRule(snatIP net.IP, mark uint32) error

	// DeleteSNATRule should delete rule to SNAT outgoing traffic with the mark.
	DeleteSNATRule(mark uint32) error

	// Run starts the sync loop.
	Run(stopCh <-chan struct{})
}

Interface is the interface for routing container packets in host network.