cidrset

package

v1.20.4 Latest Latest Go to latest Published: Oct 23, 2026 License: Apache-2.0 Imports: 8 Imported by: 0

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github.com/cilium/cilium

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Documentation ¶

Index ¶

Variables
type CidrSet
- func NewCIDRSet(clusterPrefix netip.Prefix, subNetMaskSize int) (*CidrSet, error)

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	// ErrCIDRRangeNoCIDRsRemaining occurs when there is no more space
	// to allocate CIDR ranges.
	ErrCIDRRangeNoCIDRsRemaining = errors.New(
		"CIDR allocation failed; there are no remaining CIDRs left to allocate in the accepted range")
	// ErrCIDRSetSubNetTooBig occurs when the subnet mask size is too
	// big compared to the CIDR mask size.
	ErrCIDRSetSubNetTooBig = errors.New(
		"New CIDR set failed; the node CIDR size is too big")
	// ErrSubNetMaskSizeInvalid occurs when the subnet mask size  is invalid:
	// bigger than 32 for IPv4 and bigger than 128 for IPv6
	ErrSubNetMaskSizeInvalid = fmt.Errorf(
		"SubNetMask is invalid, should be lower or equal to %d for IPv4 and to %d for IPv6",
		maxSubNetMaskSizeIPv4, maxSubNetMaskSizeIPv6)
)

Functions ¶

This section is empty.

Types ¶

type CidrSet ¶

type CidrSet struct {
	lock.Mutex
	// contains filtered or unexported fields
}

CidrSet manages a set of CIDR ranges from which blocks of IPs can be allocated.

func NewCIDRSet ¶

func NewCIDRSet(clusterPrefix netip.Prefix, subNetMaskSize int) (*CidrSet, error)

NewCIDRSet creates a new CidrSet.

func (*CidrSet) AllocateNext ¶

func (s *CidrSet) AllocateNext() (netip.Prefix, error)

AllocateNext allocates the next free CIDR range. This will set the range as occupied and return the allocated range.

func (*CidrSet) InRange ¶

func (s *CidrSet) InRange(prefix netip.Prefix) bool

InRange returns true if the given prefix is inside the range of the allocatable CidrSet.

func (*CidrSet) IsAllocated ¶

func (s *CidrSet) IsAllocated(prefix netip.Prefix) (bool, error)

IsAllocated verifies if the given prefix is allocated.

func (*CidrSet) IsClusterCIDR ¶

func (s *CidrSet) IsClusterCIDR(prefix netip.Prefix) bool

IsClusterCIDR returns true if the given prefix is equal to this CidrSet's cluster CIDR.

func (*CidrSet) IsFull ¶

func (s *CidrSet) IsFull() bool

IsFull returns true if CidrSet does not have any more available CIDRs.

func (*CidrSet) Occupy ¶

func (s *CidrSet) Occupy(prefix netip.Prefix) (err error)

Occupy marks the given prefix range as used. Occupy succeeds even if the prefix range was previously used.

func (*CidrSet) Prefix ¶

func (s *CidrSet) Prefix() netip.Prefix

Prefix returns the CidrSet's prefix.

func (*CidrSet) Release ¶

func (s *CidrSet) Release(prefix netip.Prefix) error

Release releases the given prefix range.

func (*CidrSet) String ¶

func (s *CidrSet) String() string

Source Files ¶

View all Source files

cidr_set.go

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