fragmap

Documentation

Overview

Package fragmap represents the BPF map used to associate IPv4 datagram fragments to the L4 ports of the datagram they belong to, in order to retrieve the full 5-tuple necessary to do L4-based lookups. +groupName=maps

Index

• Constants
• func InitMap(mapEntries int) error
• type FragmentKey
  • func (in *FragmentKey) DeepCopy() *FragmentKey
  • func (in *FragmentKey) DeepCopyInto(out *FragmentKey)
  • func (in *FragmentKey) DeepCopyMapKey() bpf.MapKey
  • func (k *FragmentKey) GetKeyPtr() unsafe.Pointer
  • func (k FragmentKey) NewValue() bpf.MapValue
  • func (k *FragmentKey) String() string
• type FragmentValue
  • func (in *FragmentValue) DeepCopy() *FragmentValue
  • func (in *FragmentValue) DeepCopyInto(out *FragmentValue)
  • func (in *FragmentValue) DeepCopyMapValue() bpf.MapValue
  • func (v *FragmentValue) GetValuePtr() unsafe.Pointer
  • func (v *FragmentValue) String() string

Constants

const (
	// MapName is the name of the map used to retrieve L4 ports associated
	// to the datagram to which an IPv4 belongs.
	MapName = "cilium_ipv4_frag_datagrams"
)

Functions

func InitMap

func InitMap(mapEntries int) error

InitMap creates the signal map in the kernel.

Types

type FragmentKey

type FragmentKey struct {
	// contains filtered or unexported fields
}

FragmentKey must match 'struct ipv4_frag_id' in "bpf/lib/ipv4.h". +k8s:deepcopy-gen=true +k8s:deepcopy-gen:interfaces=github.com/cilium/cilium/pkg/bpf.MapKey

func (*FragmentKey) DeepCopy

func (in *FragmentKey) DeepCopy() *FragmentKey

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new FragmentKey.

func (*FragmentKey) DeepCopyInto

func (in *FragmentKey) DeepCopyInto(out *FragmentKey)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*FragmentKey) DeepCopyMapKey

func (in *FragmentKey) DeepCopyMapKey() bpf.MapKey

DeepCopyMapKey is an autogenerated deepcopy function, copying the receiver, creating a new bpf.MapKey.

func (*FragmentKey) GetKeyPtr

func (k *FragmentKey) GetKeyPtr() unsafe.Pointer

GetKeyPtr returns the unsafe pointer to the BPF key.

func (FragmentKey) NewValue

func (k FragmentKey) NewValue() bpf.MapValue

NewValue returns a new empty instance of the structure representing the BPF map value.

func (*FragmentKey) String

func (k *FragmentKey) String() string

String converts the key into a human readable string format.

type FragmentValue

type FragmentValue struct {
	// contains filtered or unexported fields
}

FragmentValue must match 'struct ipv4_frag_l4ports' in "bpf/lib/ipv4.h". +k8s:deepcopy-gen=true +k8s:deepcopy-gen:interfaces=github.com/cilium/cilium/pkg/bpf.MapValue

func (*FragmentValue) DeepCopy

func (in *FragmentValue) DeepCopy() *FragmentValue

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new FragmentValue.

func (*FragmentValue) DeepCopyInto

func (in *FragmentValue) DeepCopyInto(out *FragmentValue)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

func (*FragmentValue) DeepCopyMapValue

func (in *FragmentValue) DeepCopyMapValue() bpf.MapValue

DeepCopyMapValue is an autogenerated deepcopy function, copying the receiver, creating a new bpf.MapValue.

func (*FragmentValue) GetValuePtr

func (v *FragmentValue) GetValuePtr() unsafe.Pointer

GetValuePtr returns the unsafe pointer to the BPF value.

func (*FragmentValue) String

func (v *FragmentValue) String() string

String converts the value into a human readable string format.