icmp_linux.go

Documentation: golang.org/x/net/ipv6

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

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