icmp_bsd.go raw

   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  //go:build aix || darwin || dragonfly || freebsd || netbsd || openbsd
   6  
   7  package ipv6
   8  
   9  func (f *icmpv6Filter) accept(typ ICMPType) {
  10  	f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
  11  }
  12  
  13  func (f *icmpv6Filter) block(typ ICMPType) {
  14  	f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
  15  }
  16  
  17  func (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  
  27  func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
  28  	return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
  29  }
  30