afpacket_nonlinux.go

// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

// +build !linux

package sniffer

import (
	"fmt"
	"time"

	"github.com/tsg/gopacket"
	"github.com/tsg/gopacket/layers"
)

type afpacketHandle struct {
}

func newAfpacketHandle(device string, snaplen int, blockSize int, numBlocks int,
	timeout time.Duration, enableAutoPromiscMode bool) (*afpacketHandle, error) {

	return nil, fmt.Errorf("Afpacket MMAP sniffing is only available on Linux")
}

func (h *afpacketHandle) ReadPacketData() (data []byte, ci gopacket.CaptureInfo, err error) {
	return data, ci, fmt.Errorf("Afpacket MMAP sniffing is only available on Linux")
}

func (h *afpacketHandle) SetBPFFilter(expr string) (_ error) {
	return fmt.Errorf("Afpacket MMAP sniffing is only available on Linux")
}

func (h *afpacketHandle) LinkType() layers.LinkType {
	return layers.LinkTypeEthernet
}

func (h *afpacketHandle) Close() {
}