| David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 1 | // Copyright 2013 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 | |
| 5 | package ipv6 |
| 6 | |
| 7 | func (f *icmpv6Filter) accept(typ ICMPType) { |
| 8 | f.X__icmp6_filt[typ>>5] |= 1 << (uint32(typ) & 31) |
| 9 | } |
| 10 | |
| 11 | func (f *icmpv6Filter) block(typ ICMPType) { |
| 12 | f.X__icmp6_filt[typ>>5] &^= 1 << (uint32(typ) & 31) |
| 13 | } |
| 14 | |
| 15 | func (f *icmpv6Filter) setAll(block bool) { |
| 16 | for i := range f.X__icmp6_filt { |
| 17 | if block { |
| 18 | f.X__icmp6_filt[i] = 0 |
| 19 | } else { |
| 20 | f.X__icmp6_filt[i] = 1<<32 - 1 |
| 21 | } |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | func (f *icmpv6Filter) willBlock(typ ICMPType) bool { |
| 26 | return f.X__icmp6_filt[typ>>5]&(1<<(uint32(typ)&31)) == 0 |
| 27 | } |