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dex/vendor/golang.org/x/net/route/sys.go

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2016-07-25 20:00:28 +00:00
// Copyright 2016 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 dragonfly freebsd netbsd openbsd
package route
import "unsafe"
var (
nativeEndian binaryByteOrder
kernelAlign int
parseFns map[int]parseFn
)
func init() {
i := uint32(1)
b := (*[4]byte)(unsafe.Pointer(&i))
if b[0] == 1 {
nativeEndian = littleEndian
} else {
nativeEndian = bigEndian
}
kernelAlign, parseFns = probeRoutingStack()
}
func roundup(l int) int {
if l == 0 {
return kernelAlign
}
return (l + kernelAlign - 1) & ^(kernelAlign - 1)
}
type parseFn func(RIBType, []byte) (Message, error)
type wireFormat struct {
extOff int // offset of header extension
bodyOff int // offset of message body
}