ebpf

Documentation

Index

• Constants
• func LoadProg(progType string, data []byte, licenseStr string, pinPath string) (int, error)
• func PinObject(objFD int, pinPath string) error
• func PinProg(progFD int, pinPath string) error
• func TCIngressAttach(interfaceName string, progFD int) error
• func XDPAttach(interfaceName string, progFD int) error
• func XDPDetach(interfaceName string) error
• type BpfMapData
  • func (m *BpfMapData) CreateMap() (int, error)
  • func (m *BpfMapData) PinMap(mapFD int, pinPath string) error
• type BpfMapDef
• type BpfPin

Constants

const (
	// BPF map type constants. Must match enum bpf_map_type from linux/bpf.h
	BPF_MAP_TYPE_UNSPEC           = 0
	BPF_MAP_TYPE_HASH             = 1
	BPF_MAP_TYPE_ARRAY            = 2
	BPF_MAP_TYPE_PROG_ARRAY       = 3
	BPF_MAP_TYPE_PERF_EVENT_ARRAY = 4
	BPF_MAP_TYPE_PERCPU_HASH      = 5
	BPF_MAP_TYPE_PERCPU_ARRAY     = 6
	BPF_MAP_TYPE_STACK_TRACE      = 7
	BPF_MAP_TYPE_CGROUP_ARRAY     = 8
	BPF_MAP_TYPE_LRU_HASH         = 9
	BPF_MAP_TYPE_LRU_PERCPU_HASH  = 10
	BPF_MAP_TYPE_LPM_TRIE         = 11
	BPF_MAP_TYPE_ARRAY_OF_MAPS    = 12
	BPF_MAP_TYPE_HASH_OF_MAPS     = 13
	BPF_MAP_TYPE_DEVMAP           = 14

	// BPF syscall command constants. Must match enum bpf_cmd from linux/bpf.h
	BPF_MAP_CREATE         = 0
	BPF_MAP_LOOKUP_ELEM    = 1
	BPF_MAP_UPDATE_ELEM    = 2
	BPF_MAP_DELETE_ELEM    = 3
	BPF_MAP_GET_NEXT_KEY   = 4
	BPF_PROG_LOAD          = 5
	BPF_OBJ_PIN            = 6
	BPF_OBJ_GET            = 7
	BPF_PROG_ATTACH        = 8
	BPF_PROG_DETACH        = 9
	BPF_PROG_TEST_RUN      = 10
	BPF_PROG_GET_NEXT_ID   = 11
	BPF_MAP_GET_NEXT_ID    = 12
	BPF_PROG_GET_FD_BY_ID  = 13
	BPF_MAP_GET_FD_BY_ID   = 14
	BPF_OBJ_GET_INFO_BY_FD = 15

	// Flags for BPF_MAP_UPDATE_ELEM. Must match values from linux/bpf.h
	BPF_ANY     = 0
	BPF_NOEXIST = 1
	BPF_EXIST   = 2

	BPF_F_NO_PREALLOC   = 1 << 0
	BPF_F_NO_COMMON_LRU = 1 << 1

	// BPF MAP pinning
	PIN_NONE      = 0
	PIN_OBJECT_NS = 1
	PIN_GLOBAL_NS = 2
	PIN_CUSTOM_NS = 3

	BPF_DIR_MNT     = "/sys/fs/bpf/"
	BPF_DIR_GLOBALS = "globals"
)

const (
	XDP_ATTACH_MODE_NONE = 0
	XDP_ATTACH_MODE_SKB  = 1
	XDP_ATTACH_MODE_DRV  = 2
	XDP_ATTACH_MODE_HW   = 3
)

Functions

func LoadProg

func LoadProg(progType string, data []byte, licenseStr string, pinPath string) (int, error)

func PinObject

func PinObject(objFD int, pinPath string) error

func PinProg

func PinProg(progFD int, pinPath string) error

func TCIngressAttach

func TCIngressAttach(interfaceName string, progFD int) error

func XDPAttach

func XDPAttach(interfaceName string, progFD int) error

func XDPDetach

func XDPDetach(interfaceName string) error

Types

type BpfMapData

type BpfMapData struct {
	Def BpfMapDef

	//Name     [16]byte
	Name string
	// contains filtered or unexported fields
}

func (*BpfMapData) CreateMap

func (m *BpfMapData) CreateMap() (int, error)

func (*BpfMapData) PinMap

func (m *BpfMapData) PinMap(mapFD int, pinPath string) error

type BpfMapDef

type BpfMapDef struct {
	Type       uint32
	KeySize    uint32
	ValueSize  uint32
	MaxEntries uint32
	Flags      uint32
	InnerMapFd uint32
	Pinning    uint32
}

type BpfPin

type BpfPin struct {
	Pathname  uintptr
	Fd        uint32
	FileFlags uint32
}