1 files changed, 35 insertions, 0 deletions
diff --git a/tun/checksum_test.go b/tun/checksum_test.go
new file mode 100644
index 0000000..c1ccff5
--- /dev/null
+++ b/tun/checksum_test.go
@@ -0,0 +1,35 @@
+package tun
+
+import (
+	"fmt"
+	"math/rand"
+	"testing"
+)
+
+func BenchmarkChecksum(b *testing.B) {
+	lengths := []int{
+		64,
+		128,
+		256,
+		512,
+		1024,
+		1500,
+		2048,
+		4096,
+		8192,
+		9000,
+		9001,
+	}
+
+	for _, length := range lengths {
+		b.Run(fmt.Sprintf("%d", length), func(b *testing.B) {
+			buf := make([]byte, length)
+			rng := rand.New(rand.NewSource(1))
+			rng.Read(buf)
+			b.ResetTimer()
+			for i := 0; i < b.N; i++ {
+				checksum(buf, 0)
+			}
+		})
+	}
+}