Documentation
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Overview ¶
Package fragmap represents the BPF map used to associate 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 ¶
This section is empty.
Variables ¶
var Cell = cell.Module( "fragments-map", "Initializes fragments bpf map", cell.Provide(newFragMap), )
Cell provides the fragmap.Map used to associate 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.
Functions ¶
func OpenMap4 ¶ added in v1.18.0
OpenMap4 opens the pre-initialized IPv4 fragments map for access. This should only be used from components which aren't capable of using hive - mainly the cilium-dbg. It needs to initialized beforehand via the Cilium Agent.
Types ¶
type FragmentKey4 ¶ added in v1.18.0
type FragmentKey4 struct {
DestAddr types.IPv4 `align:"daddr"`
SourceAddr types.IPv4 `align:"saddr"`
ID uint16 `align:"id"`
Proto uint8 `align:"proto"`
// contains filtered or unexported fields
}
FragmentKey4 must match 'struct ipv4_frag_id' in "bpf/lib/ipv4.h".
func (*FragmentKey4) NativeID ¶ added in v1.18.0
func (k *FragmentKey4) NativeID() uint16
func (*FragmentKey4) New ¶ added in v1.18.0
func (k *FragmentKey4) New() bpf.MapKey
func (*FragmentKey4) String ¶ added in v1.18.0
func (k *FragmentKey4) String() string
String converts the key into a human-readable string format.
type FragmentKey6 ¶ added in v1.18.0
type FragmentKey6 struct {
ID uint32 `align:"id"`
Proto uint8 `align:"proto"`
SourceAddr types.IPv6 `align:"saddr"`
DestAddr types.IPv6 `align:"daddr"`
// contains filtered or unexported fields
}
FragmentKey6 must match 'struct ipv6_frag_id' in "bpf/lib/ipv6.h".
func (*FragmentKey6) NativeID ¶ added in v1.18.0
func (k *FragmentKey6) NativeID() uint32
func (*FragmentKey6) New ¶ added in v1.18.0
func (k *FragmentKey6) New() bpf.MapKey
func (*FragmentKey6) String ¶ added in v1.18.0
func (k *FragmentKey6) String() string
String converts the key into a human-readable string format.
type FragmentValue4 ¶ added in v1.18.0
FragmentValue4 must match 'struct ipv4_frag_l4ports' in "bpf/lib/ipv4.h".
func (*FragmentValue4) New ¶ added in v1.18.0
func (v *FragmentValue4) New() bpf.MapValue
func (*FragmentValue4) String ¶ added in v1.18.0
func (v *FragmentValue4) String() string
String converts the value into a human-readable string format.
type FragmentValue6 ¶ added in v1.18.0
FragmentValue6 must match 'struct ipv6_frag_l4ports' in "bpf/lib/ipv4.h".
func (*FragmentValue6) New ¶ added in v1.18.0
func (v *FragmentValue6) New() bpf.MapValue
func (*FragmentValue6) String ¶ added in v1.18.0
func (v *FragmentValue6) String() string
String converts the value into a human-readable string format.
type Map ¶ added in v1.19.0
type Map any
Map is a marker interface for the fragments map. It doesn't provide any functionality to the Cilium Agent because the bpf map is only created by the Cilium Agent for the datapath. It's still provided to be picked up as dependency by the Loader and initialized at startup.
Source Files