route

Documentation

Index

• Constants
• Variables
• type Client
  • func NewClient(serviceCIDR *net.IPNet, encapMode config.TrafficEncapModeType) (*Client, error)
  • func (c *Client) AddRoutes(podCIDR *net.IPNet, nodeIP, nodeGwIP net.IP) error
  • func (c *Client) DeleteRoutes(podCIDR *net.IPNet) error
  • func (c *Client) Initialize(nodeConfig *config.NodeConfig) error
  • func (c *Client) MigrateRoutesToGw(linkName string) error
  • func (c *Client) Reconcile(podCIDRs []string) error
  • func (c *Client) UnMigrateRoutesFromGw(route *net.IPNet, linkName string) error
• type Interface

Constants

const (
	// AntreaServiceTable is route table name for Antrea service traffic.
	AntreaServiceTable = "Antrea-service"
	// AntreaServiceTableIdx is route table index for Antrea service traffic.
	AntreaServiceTableIdx = 300

	// AntreaIPRulePriority is Antrea IP rule priority
	AntreaIPRulePriority = 300
)

Variables

var (
	// RtTblSelectorValue selects which route table to use to forward service traffic back to host gateway antrea-gw0.
	RtTblSelectorValue = 1 << 11
)

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, encapMode config.TrafficEncapModeType) (*Client, error)

NewClient returns a route client.

func (*Client) AddRoutes

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

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

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) Initialize

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

	// Reconcile should remove orphaned routes and related configuration based on the desired podCIDRs.
	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, 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
}

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