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// Copyright 2018 The GoPacket Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file in the root of the source
// tree.
package pcap
import (
"testing"
"time"
"github.com/gopacket/gopacket"
"github.com/gopacket/gopacket/layers"
)
var (
snaplen = 65535
packet = [...]byte{
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // dst mac
0x0, 0x11, 0x22, 0x33, 0x44, 0x55, // src mac
0x08, 0x0, // ether type
0x45, 0x0, 0x0, 0x3c, 0xa6, 0xc3, 0x40, 0x0, 0x40, 0x06, 0x3d, 0xd8, // ip header
0xc0, 0xa8, 0x50, 0x2f, // src ip
0xc0, 0xa8, 0x50, 0x2c, // dst ip
0xaf, 0x14, // src port
0x0, 0x50, // dst port
}
matchingBPFFilter = "ip and tcp and port 80"
nonmatchingBPFFilter = "udp and port 80"
)
func BenchmarkPcapNonmatchingBPFFilter(b *testing.B) {
bpf, err := NewBPF(layers.LinkTypeEthernet, snaplen, nonmatchingBPFFilter)
if err != nil {
b.Fatal("incorrect filter")
}
ci := gopacket.CaptureInfo{
InterfaceIndex: 0,
CaptureLength: len(packet),
Length: len(packet),
Timestamp: time.Now(),
}
for i := 0; i < b.N; i++ {
if bpf.Matches(ci, packet[:]) {
b.Fatal("filter must not match the packet")
}
}
}
func BenchmarkPcapMatchingBPFFilter(b *testing.B) {
bpf, err := NewBPF(layers.LinkTypeEthernet, snaplen, matchingBPFFilter)
if err != nil {
b.Fatal("incorrect filter")
}
ci := gopacket.CaptureInfo{
InterfaceIndex: 0,
CaptureLength: len(packet),
Length: len(packet),
Timestamp: time.Now(),
}
for i := 0; i < b.N; i++ {
if !bpf.Matches(ci, packet[:]) {
b.Fatal("filter must match the packet")
}
}
}
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