// 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. | |
package ipv6 | |
import "syscall" | |
type rawICMPFilter struct { | |
syscall.ICMPv6Filter | |
} | |
func (f *rawICMPFilter) set(typ ICMPType, block bool) { | |
if block { | |
f.Data[typ>>5] |= 1 << (uint32(typ) & 31) | |
} else { | |
f.Data[typ>>5] &^= 1 << (uint32(typ) & 31) | |
} | |
} | |
func (f *rawICMPFilter) setAll(block bool) { | |
for i := range f.Data { | |
if block { | |
f.Data[i] = 1<<32 - 1 | |
} else { | |
f.Data[i] = 0 | |
} | |
} | |
} | |
func (f *rawICMPFilter) willBlock(typ ICMPType) bool { | |
return f.Data[typ>>5]&(1<<(uint32(typ)&31)) != 0 | |
} |