| // Copyright 2020 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 |
| |
| func (f *icmpv6Filter) accept(typ ICMPType) { |
| f.Filt[typ>>5] |= 1 << (uint32(typ) & 31) |
| |
| } |
| |
| func (f *icmpv6Filter) block(typ ICMPType) { |
| f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31) |
| |
| } |
| |
| func (f *icmpv6Filter) setAll(block bool) { |
| for i := range f.Filt { |
| if block { |
| f.Filt[i] = 0 |
| } else { |
| f.Filt[i] = 1<<32 - 1 |
| } |
| } |
| } |
| |
| func (f *icmpv6Filter) willBlock(typ ICMPType) bool { |
| return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0 |
| } |
