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 (k *FragmentKey) New() bpf.MapKey
  • func (k *FragmentKey) String() string
• type FragmentValue
  • func (v *FragmentValue) New() bpf.MapValue
  • 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".

func (*FragmentKey) New

func (k *FragmentKey) New() bpf.MapKey

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".

func (*FragmentValue) New

func (v *FragmentValue) New() bpf.MapValue

func (*FragmentValue) String

func (v *FragmentValue) String() string

String converts the value into a human readable string format.