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 ipv6
6
7func (f *icmpv6Filter) accept(typ ICMPType) {
8	f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
9
10}
11
12func (f *icmpv6Filter) block(typ ICMPType) {
13	f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
14
15}
16
17func (f *icmpv6Filter) setAll(block bool) {
18	for i := range f.Filt {
19		if block {
20			f.Filt[i] = 0
21		} else {
22			f.Filt[i] = 1<<32 - 1
23		}
24	}
25}
26
27func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
28	return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
29}
30