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36 lines
713 B
Go
36 lines
713 B
Go
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin freebsd netbsd openbsd
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package ipv6
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import "syscall"
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type rawICMPFilter struct {
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syscall.ICMPv6Filter
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}
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func (f *rawICMPFilter) set(typ ICMPType, block bool) {
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if block {
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f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
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} else {
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f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
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}
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}
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func (f *rawICMPFilter) setAll(block bool) {
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for i := range f.Filt {
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if block {
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f.Filt[i] = 0
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} else {
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f.Filt[i] = 1<<32 - 1
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}
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}
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}
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func (f *rawICMPFilter) willBlock(typ ICMPType) bool {
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return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
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}
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