ip

Documentation

Index

• Constants
• func DiffFromCIDRs(allowCIDR *net.IPNet, exceptCIDRs []*net.IPNet) ([]*net.IPNet, error)
• func IPNetToNetIPNet(ipNet *v1beta2.IPNet) *net.IPNet
• func IPProtocolNumberToString(protocolNum uint8, defaultValue string) string
• func MustParseCIDR(cidr string) *net.IPNet

Constants

const (
	V4BitLen = 8 * net.IPv4len
	V6BitLen = 8 * net.IPv6len
)

const (
	ICMPProtocol   = 1
	TCPProtocol    = 6
	UDPProtocol    = 17
	ICMPv6Protocol = 58
	SCTPProtocol   = 132
)

Functions

func DiffFromCIDRs

func DiffFromCIDRs(allowCIDR *net.IPNet, exceptCIDRs []*net.IPNet) ([]*net.IPNet, error)

This function takes in one allow CIDR and multiple except CIDRs and gives diff CIDRs in allowCIDR eliminating except CIDRs. It currently supports only IPv4. except CIDR input can be changed.

func IPNetToNetIPNet

func IPNetToNetIPNet(ipNet *v1beta2.IPNet) *net.IPNet

IPNetToNetIPNet converts Antrea IPNet to *net.IPNet. Note that K8s allows non-standard CIDRs to be specified (e.g. 10.0.1.1/16, fe80::7015:efff:fe9a:146b/64). However, OVS will report OFPBMC_BAD_WILDCARDS error if using them in the OpenFlow messages. The function will normalize the CIDR if it's non-standard.

func IPProtocolNumberToString

func IPProtocolNumberToString(protocolNum uint8, defaultValue string) string

IPProtocolNumberToString returns the string name of the IP protocol with number protocolNum. If the number does not match a "known" protocol, we return the defaultValue string.

func MustParseCIDR

func MustParseCIDR(cidr string) *net.IPNet

MustParseCIDR turns the given string into IPNet or panics, for tests or other cases where the string must be valid.