// Copyright 2013 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. // +build darwin freebsd netbsd openbsd package ipv6 type sysICMPFilter struct { Filt [8]uint32 } func (f *sysICMPFilter) set(typ ICMPType, block bool) { if block { f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31) } else { f.Filt[typ>>5] |= 1 << (uint32(typ) & 31) } } func (f *sysICMPFilter) setAll(block bool) { for i := range f.Filt { if block { f.Filt[i] = 0 } else { f.Filt[i] = 1<<32 - 1 } } } func (f *sysICMPFilter) willBlock(typ ICMPType) bool { return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0 }