--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * Global definitions for the HIPPI interface.
+ *
+ * Version: @(#)if_hippi.h 1.0.0 05/26/97
+ *
+ * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ * Donald Becker, <becker@super.org>
+ * Alan Cox, <alan@lxorguk.ukuu.org.uk>
+ * Steve Whitehouse, <gw7rrm@eeshack3.swan.ac.uk>
+ * Jes Sorensen, <Jes.Sorensen@cern.ch>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _LINUX_IF_HIPPI_H
+#define _LINUX_IF_HIPPI_H
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+/*
+ * HIPPI magic constants.
+ */
+
+#define HIPPI_ALEN 6 /* Bytes in one HIPPI hw-addr */
+#define HIPPI_HLEN sizeof(struct hippi_hdr)
+#define HIPPI_ZLEN 0 /* Min. bytes in frame without FCS */
+#define HIPPI_DATA_LEN 65280 /* Max. bytes in payload */
+#define HIPPI_FRAME_LEN (HIPPI_DATA_LEN + HIPPI_HLEN)
+ /* Max. bytes in frame without FCS */
+
+/*
+ * Define LLC and SNAP constants.
+ */
+#define HIPPI_EXTENDED_SAP 0xAA
+#define HIPPI_UI_CMD 0x03
+
+
+/*
+ * Do we need to list some sort of ID's here?
+ */
+
+/*
+ * HIPPI statistics collection data.
+ */
+
+struct hipnet_statistics {
+ int rx_packets; /* total packets received */
+ int tx_packets; /* total packets transmitted */
+ int rx_errors; /* bad packets received */
+ int tx_errors; /* packet transmit problems */
+ int rx_dropped; /* no space in linux buffers */
+ int tx_dropped; /* no space available in linux */
+
+ /* detailed rx_errors: */
+ int rx_length_errors;
+ int rx_over_errors; /* receiver ring buff overflow */
+ int rx_crc_errors; /* recved pkt with crc error */
+ int rx_frame_errors; /* recv'd frame alignment error */
+ int rx_fifo_errors; /* recv'r fifo overrun */
+ int rx_missed_errors; /* receiver missed packet */
+
+ /* detailed tx_errors */
+ int tx_aborted_errors;
+ int tx_carrier_errors;
+ int tx_fifo_errors;
+ int tx_heartbeat_errors;
+ int tx_window_errors;
+};
+
+
+struct hippi_fp_hdr {
+#if 0
+ __u8 ulp; /* must contain 4 */
+#if defined (__BIG_ENDIAN_BITFIELD)
+ __u8 d1_data_present:1; /* must be 1 */
+ __u8 start_d2_burst_boundary:1; /* must be zero */
+ __u8 reserved:6; /* must be zero */
+#if 0
+ __u16 reserved1:5;
+ __u16 d1_area_size:8; /* must be 3 */
+ __u16 d2_offset:3; /* must be zero */
+#endif
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ __u8 reserved:6; /* must be zero */
+ __u8 start_d2_burst_boundary:1; /* must be zero */
+ __u8 d1_data_present:1; /* must be 1 */
+#if 0
+ __u16 d2_offset:3; /* must be zero */
+ __u16 d1_area_size:8; /* must be 3 */
+ __u16 reserved1:5; /* must be zero */
+#endif
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+#else
+ __be32 fixed;
+#endif
+ __be32 d2_size;
+} __attribute__((packed));
+
+struct hippi_le_hdr {
+#if defined (__BIG_ENDIAN_BITFIELD)
+ __u8 fc:3;
+ __u8 double_wide:1;
+ __u8 message_type:4;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ __u8 message_type:4;
+ __u8 double_wide:1;
+ __u8 fc:3;
+#endif
+ __u8 dest_switch_addr[3];
+#if defined (__BIG_ENDIAN_BITFIELD)
+ __u8 dest_addr_type:4,
+ src_addr_type:4;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ __u8 src_addr_type:4,
+ dest_addr_type:4;
+#endif
+ __u8 src_switch_addr[3];
+ __u16 reserved;
+ __u8 daddr[HIPPI_ALEN];
+ __u16 locally_administered;
+ __u8 saddr[HIPPI_ALEN];
+} __attribute__((packed));
+
+#define HIPPI_OUI_LEN 3
+/*
+ * Looks like the dsap and ssap fields have been swapped by mistake in
+ * RFC 2067 "IP over HIPPI".
+ */
+struct hippi_snap_hdr {
+ __u8 dsap; /* always 0xAA */
+ __u8 ssap; /* always 0xAA */
+ __u8 ctrl; /* always 0x03 */
+ __u8 oui[HIPPI_OUI_LEN]; /* organizational universal id (zero)*/
+ __be16 ethertype; /* packet type ID field */
+} __attribute__((packed));
+
+struct hippi_hdr {
+ struct hippi_fp_hdr fp;
+ struct hippi_le_hdr le;
+ struct hippi_snap_hdr snap;
+} __attribute__((packed));
+
+#endif /* _LINUX_IF_HIPPI_H */
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