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icmp_bsd.go (734B)

      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 // +build aix darwin dragonfly freebsd netbsd openbsd
      7 
      8 package ipv6
      9 
     10 func (f *icmpv6Filter) accept(typ ICMPType) {
     11 	f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
     12 }
     13 
     14 func (f *icmpv6Filter) block(typ ICMPType) {
     15 	f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
     16 }
     17 
     18 func (f *icmpv6Filter) setAll(block bool) {
     19 	for i := range f.Filt {
     20 		if block {
     21 			f.Filt[i] = 0
     22 		} else {
     23 			f.Filt[i] = 1<<32 - 1
     24 		}
     25 	}
     26 }
     27 
     28 func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
     29 	return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
     30 }