|  | // Copyright 2020 The Go Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style | 
|  | // license that can be found in the LICENSE file. | 
|  |  | 
|  | package net | 
|  |  | 
|  | import ( | 
|  | "testing" | 
|  | ) | 
|  |  | 
|  | func TestMaxAckBacklog(t *testing.T) { | 
|  | n := 196602 | 
|  | major, minor := kernelVersion() | 
|  | backlog := maxAckBacklog(n) | 
|  | expected := 1<<16 - 1 | 
|  | if major > 4 || (major == 4 && minor >= 1) { | 
|  | expected = n | 
|  | } | 
|  | if backlog != expected { | 
|  | t.Fatalf(`Kernel version: "%d.%d", sk_max_ack_backlog mismatch, got %d, want %d`, major, minor, backlog, expected) | 
|  | } | 
|  | } |