You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: filter_linux.go
    path of file: ./repos/sealer/vendor/github.com/vishvananda/netlink
    
    the code of the file until where you have to start completion: package netlink

import (
	"bytes"
	"encoding/binary"
	"encoding/hex"
	"errors"
	"fmt"
	"syscall"

	"github.com/vishvananda/netlink/nl"
	"golang.org/x/sys/unix"
)

// Constants used in TcU32Sel.Flags.
const (
	TC_U32_TERMINAL  = nl.TC_U32_TERMINAL
	TC_U32_OFFSET    = nl.TC_U32_OFFSET
	TC_U32_VAROFFSET = nl.TC_U32_VAROFFSET
	TC_U32_EAT       = nl.TC_U32_EAT
)

// Sel of the U32 filters that contains multiple TcU32Key. This is the type
// alias and the frontend representation of nl.TcU32Sel. It is serialized into
// canonical nl.TcU32Sel with the appropriate endianness.
type TcU32Sel = nl.TcU32Sel

// TcU32Key contained of Sel in the U32 filters. This is the type alias and the
// frontend representation of nl.TcU32Key. It is serialized into ch
    
func parseBpfData(filter Filter, data []syscall.NetlinkRouteAttr) (bool, error) {
	native = nl.NativeEndian()
	bpf := filter.(*BpfFilter)
	detailed := true
	for _, datum := range data {
		switch datum.Attr.Type {
		case nl.TCA_BPF_FD:
			bpf.Fd = int(native.Uint32(datum.Value[0:4]))
		case nl.TCA_BPF_NAME:
			bpf.Name = string(datum.Value[:len(datum.Value)-1])
		case nl.TCA_BPF_CLASSID:
			bpf.ClassId = native.Uint32(datum.Value[0:4])
		case nl.TCA_BPF_FLAGS:
			flags := native.Uint32(datum.Value[0:4])
			if (flags & nl.TCA_BPF_FLAG_ACT_DIRECT) != 0 {
				bpf.DirectAction = true
			}
		case nl.TCA_BPF_ID:
			bpf.Id = int(native.Uint32(datum.Value[0:4]))
		case nl.TCA_BPF_TAG:
			bpf.Tag = hex.EncodeToString(datum.Value[:len(datum.Value)-1])
		}
	}
	return detailed, nil
}