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27 lines
663 B
27 lines
663 B
// 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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package ipv6 |
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func (f *icmpv6Filter) accept(typ ICMPType) { |
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f.X__icmp6_filt[typ>>5] |= 1 << (uint32(typ) & 31) |
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} |
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func (f *icmpv6Filter) block(typ ICMPType) { |
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f.X__icmp6_filt[typ>>5] &^= 1 << (uint32(typ) & 31) |
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} |
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func (f *icmpv6Filter) setAll(block bool) { |
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for i := range f.X__icmp6_filt { |
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if block { |
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f.X__icmp6_filt[i] = 0 |
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} else { |
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f.X__icmp6_filt[i] = 1<<32 - 1 |
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} |
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} |
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} |
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func (f *icmpv6Filter) willBlock(typ ICMPType) bool { |
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return f.X__icmp6_filt[typ>>5]&(1<<(uint32(typ)&31)) == 0 |
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}
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