--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef __LINUX_ATALK_H__
+#define __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 /* __LINUX_ATALK_H__ */