#ifndef _UAPI__LINUX_ATALK_H__
  #define _UAPI__LINUX_ATALK_H__
  
  #include <linux/types.h>
  #include <asm/byteorder.h>
  #include <linux/socket.h>
  
  /*
   * AppleTalk networking structures
   *
   * The following are directly referenced from the University Of Michigan
   * netatalk for compatibility reasons.
   */
  #define ATPORT_FIRST	1
  #define ATPORT_RESERVED	128
  #define ATPORT_LAST	254		/* 254 is only legal on localtalk */ 
  #define ATADDR_ANYNET	(__u16)0
  #define ATADDR_ANYNODE	(__u8)0
  #define ATADDR_ANYPORT  (__u8)0
  #define ATADDR_BCAST	(__u8)255
  #define DDP_MAXSZ	587
  #define DDP_MAXHOPS     15		/* 4 bits of hop counter */
  
  #define SIOCATALKDIFADDR       (SIOCPROTOPRIVATE + 0)
  
  struct atalk_addr {
  	__be16	s_net;
  	__u8	s_node;
  };
  
  struct sockaddr_at {
  	__kernel_sa_family_t sat_family;
  	__u8		  sat_port;
  	struct atalk_addr sat_addr;
  	char		  sat_zero[8];
  };
  
  struct atalk_netrange {
  	__u8	nr_phase;
  	__be16	nr_firstnet;
  	__be16	nr_lastnet;
  };
  
  #endif /* _UAPI__LINUX_ATALK_H__ */