interface_multicast.mx raw

   1  // Copyright 2016 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 darwin || dragonfly || freebsd
   6  
   7  package routebsd
   8  
   9  func (w *wireFormat) parseInterfaceMulticastAddrMessage(b []byte) (Message, error) {
  10  	if len(b) < w.bodyOff {
  11  		return nil, errMessageTooShort
  12  	}
  13  	l := int(nativeEndian.Uint16(b[:2]))
  14  	if len(b) < l {
  15  		return nil, errInvalidMessage
  16  	}
  17  	m := &InterfaceMulticastAddrMessage{
  18  		Version: int(b[2]),
  19  		Type:    int(b[3]),
  20  		Flags:   int(nativeEndian.Uint32(b[8:12])),
  21  		Index:   int(nativeEndian.Uint16(b[12:14])),
  22  		raw:     b[:l],
  23  	}
  24  	var err error
  25  	m.Addrs, err = parseAddrs(uint(nativeEndian.Uint32(b[4:8])), b[w.bodyOff:])
  26  	if err != nil {
  27  		return nil, err
  28  	}
  29  	return m, nil
  30  }
  31