containernetwork

Documentation

Index

• Constants
• func CheckIPIsGlobalUnicast(ip net.IP) bool
• func CheckIPv6Disabled(nicName string) (bool, error)
• func CheckIPv6GlobalDisabled() (bool, error)
• func CheckIfContainerNetworkLink(linkName string) bool
• func ConfigureContainerNic(containerNicName, hostNicName, nodeIfName string, ...) error
• func ConfigureHostNic(nicName string, allocatedIPs map[networkingv1.IPVersion]*IPInfo, ...) error
• func EnsureVlanIf(nodeIfName string, vlanID *uint32) (string, error)
• func GenerateContainerVethPair(containerID string) (string, string)
• func GenerateIPListString(addrList []netlink.Addr) string
• func GenerateVlanNetIfName(parentName string, vlanID *uint32) (string, error)
• func GenerateVxlanNetIfName(parentName string, vlanID *uint32) (string, error)
• func GetDefaultInterface(family int) (*net.Interface, error)
• func GetDefaultRoute(family int) (*netlink.Route, error)
• func GetInterfaceByPreferString(preferString string) (*net.Interface, error)
• func ListAllAddress(link netlink.Link) ([]netlink.Addr, error)
• func ListLocalAddressExceptLink(exceptLinkName string) ([]netlink.Addr, error)
• type IPInfo

Constants

const (
	DockerNetnsDir     = "/var/run/docker/netns"
	ContainerdNetnsDir = "/var/run/netns/"

	ContainerHostLinkPrefix = "h_"
	ContainerHostLinkMac    = "ee:ee:ee:ee:ee:ee"
	ContainerInitLinkSuffix = "_c"
	VxlanLinkInfix          = ".vxlan"
	ContainerNicName        = "eth0"

	ProxyArpSysctl       = "/proc/sys/net/ipv4/conf/%s/proxy_arp"
	ProxyDelaySysctl     = "/proc/sys/net/ipv4/neigh/%s/proxy_delay"
	RouteLocalNetSysctl  = "/proc/sys/net/ipv4/conf/%s/route_localnet"
	IPv4ForwardingSysctl = "/proc/sys/net/ipv4/conf/%s/forwarding"

	RpFilterSysctl = "/proc/sys/net/ipv4/conf/%s/rp_filter"

	IPv4NeighGCThresh1 = "/proc/sys/net/ipv4/neigh/default/gc_thresh1"
	IPv4NeighGCThresh2 = "/proc/sys/net/ipv4/neigh/default/gc_thresh2"
	IPv4NeighGCThresh3 = "/proc/sys/net/ipv4/neigh/default/gc_thresh3"

	IPv6NeighGCThresh1 = "/proc/sys/net/ipv6/neigh/default/gc_thresh1"
	IPv6NeighGCThresh2 = "/proc/sys/net/ipv6/neigh/default/gc_thresh2"
	IPv6NeighGCThresh3 = "/proc/sys/net/ipv6/neigh/default/gc_thresh3"

	ProxyNdpSysctl       = "/proc/sys/net/ipv6/conf/%s/proxy_ndp"
	IPv6ForwardingSysctl = "/proc/sys/net/ipv6/conf/%s/forwarding"

	IPv4AppSolicitSysctl = "/proc/sys/net/ipv4/neigh/%s/app_solicit"
	IPv6AppSolicitSysctl = "/proc/sys/net/ipv6/neigh/%s/app_solicit"

	AcceptDADSysctl = "/proc/sys/net/ipv6/conf/%s/accept_dad"
	AcceptRASysctl  = "/proc/sys/net/ipv6/conf/%s/accept_ra"

	IPv4BaseReachableTimeMSSysctl = "/proc/sys/net/ipv4/neigh/%s/base_reachable_time_ms"
	IPv6BaseReachableTimeMSSysctl = "/proc/sys/net/ipv6/neigh/%s/base_reachable_time_ms"

	IPv6DisableModuleParameter = "/sys/module/ipv6/parameters/disable"
	IPv6DisableSysctl          = "/proc/sys/net/ipv6/conf/%s/disable_ipv6"

	// IP Masks that have no effect on IP Address
	DefaultIP4Mask = "255.255.255.255"
	DefaultIP6Mask = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"
)

Functions

func CheckIPIsGlobalUnicast

func CheckIPIsGlobalUnicast(ip net.IP) bool

func CheckIPv6Disabled

func CheckIPv6Disabled(nicName string) (bool, error)

func CheckIPv6GlobalDisabled

func CheckIPv6GlobalDisabled() (bool, error)

func CheckIfContainerNetworkLink

func CheckIfContainerNetworkLink(linkName string) bool

func ConfigureContainerNic

func ConfigureContainerNic(containerNicName, hostNicName, nodeIfName string, allocatedIPs map[networkingv1.IPVersion]*IPInfo,
	macAddr net.HardwareAddr, netID *uint32, netns ns.NetNS, mtu int, vlanCheckTimeout time.Duration,
	networkType networkingv1.NetworkType, neighGCThresh1, neighGCThresh2, neighGCThresh3 int) error

ipAddr is a CIDR notation IP address and prefix length

func ConfigureHostNic

func ConfigureHostNic(nicName string, allocatedIPs map[networkingv1.IPVersion]*IPInfo, localDirectTableNum int) error

func EnsureVlanIf

func EnsureVlanIf(nodeIfName string, vlanID *uint32) (string, error)

func GenerateContainerVethPair

func GenerateContainerVethPair(containerID string) (string, string)

func GenerateIPListString

func GenerateIPListString(addrList []netlink.Addr) string

func GenerateVlanNetIfName

func GenerateVlanNetIfName(parentName string, vlanID *uint32) (string, error)

func GenerateVxlanNetIfName

func GenerateVxlanNetIfName(parentName string, vlanID *uint32) (string, error)

func GetDefaultInterface

func GetDefaultInterface(family int) (*net.Interface, error)

func GetDefaultRoute

func GetDefaultRoute(family int) (*netlink.Route, error)

func GetInterfaceByPreferString

func GetInterfaceByPreferString(preferString string) (*net.Interface, error)

Get first valid interface by prefer string.

func ListAllAddress

func ListAllAddress(link netlink.Link) ([]netlink.Addr, error)

func ListLocalAddressExceptLink

func ListLocalAddressExceptLink(exceptLinkName string) ([]netlink.Addr, error)

Types

type IPInfo

type IPInfo struct {
	Addr net.IP
	Gw   net.IP
	Cidr *net.IPNet
}