/usr/share/gocode/src/code.google.com/p/go.net/ipv6/icmp_bsd.go is in golang-go.net-dev 0.0~hg20131201-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | // Copyright 2013 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.
// +build darwin freebsd netbsd openbsd
package ipv6
import "syscall"
type rawICMPFilter struct {
syscall.ICMPv6Filter
}
func (f *rawICMPFilter) set(typ ICMPType, block bool) {
if block {
f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
} else {
f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
}
}
func (f *rawICMPFilter) setAll(block bool) {
for i := range f.Filt {
if block {
f.Filt[i] = 0
} else {
f.Filt[i] = 1<<32 - 1
}
}
}
func (f *rawICMPFilter) willBlock(typ ICMPType) bool {
return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
}
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