1// Copyright 2020 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package net
6
7import (
8	"internal/syscall/unix"
9	"testing"
10)
11
12func TestMaxAckBacklog(t *testing.T) {
13	n := 196602
14	major, minor := unix.KernelVersion()
15	backlog := maxAckBacklog(n)
16	expected := 1<<16 - 1
17	if major > 4 || (major == 4 && minor >= 1) {
18		expected = n
19	}
20	if backlog != expected {
21		t.Fatalf(`Kernel version: "%d.%d", sk_max_ack_backlog mismatch, got %d, want %d`, major, minor, backlog, expected)
22	}
23}
24