kubernetes/pkg/api/servicecidr/servicecidr.go

// OverlapsPrefix return the list of ServiceCIDR that overlaps with the prefix passed as argument
func OverlapsPrefix(serviceCIDRLister networkinglisters.ServiceCIDRLister, prefix netip.Prefix) []*networkingv1beta1.ServiceCIDR { … }

// ContainsPrefix return the list of ServiceCIDR that contains the prefix passed as argument
func ContainsPrefix(serviceCIDRLister networkinglisters.ServiceCIDRLister, prefix netip.Prefix) []*networkingv1beta1.ServiceCIDR { … }

// ContainsIP return the list of ServiceCIDR that contains the IP address passed as argument
func ContainsIP(serviceCIDRLister networkinglisters.ServiceCIDRLister, ip net.IP) []*networkingv1beta1.ServiceCIDR { … }

// ContainsAddress return the list of ServiceCIDR that contains the address passed as argument
func ContainsAddress(serviceCIDRLister networkinglisters.ServiceCIDRLister, address netip.Addr) []*networkingv1beta1.ServiceCIDR { … }

// PrefixContainsIP returns true if the given IP is contained with the prefix,
// is not the network address and also, if IPv4, is not the broadcast address.
// This is required (rather than just `prefix.Contains(ip)`) because a ServiceCIDR
// covering prefix will not allocate those IPs, so a service with one of those IPs
// can't belong to that ServiceCIDR.
func PrefixContainsIP(prefix netip.Prefix, ip netip.Addr) bool { … }

// broadcastAddress returns the broadcast address of the subnet
// The broadcast address is obtained by setting all the host bits
// in a subnet to 1.
// network 192.168.0.0/24 : subnet bits 24 host bits 32 - 24 = 8
// broadcast address 192.168.0.255
func broadcastAddress(subnet netip.Prefix) (netip.Addr, error) { … }

// IPToAddr converts a net.IP to a netip.Addr
// if the net.IP is not valid it returns an empty netip.Addr{}
func IPToAddr(ip net.IP) netip.Addr { … }