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+/*
+ * Copyright (c) 1988, 1989, 1990, 1993, 1994, 1995, 1996
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * AppleTalk protocol formats (courtesy Bill Croft of Stanford/SUMEX).
+ */
+
+struct LAP {
+ nd_uint8_t dst;
+ nd_uint8_t src;
+ nd_uint8_t type;
+};
+#define lapShortDDP 1 /* short DDP type */
+#define lapDDP 2 /* DDP type */
+#define lapKLAP 'K' /* Kinetics KLAP type */
+
+/* Datagram Delivery Protocol */
+
+struct atDDP {
+ nd_uint16_t length;
+ nd_uint16_t checksum;
+ nd_uint16_t dstNet;
+ nd_uint16_t srcNet;
+ nd_uint8_t dstNode;
+ nd_uint8_t srcNode;
+ nd_uint8_t dstSkt;
+ nd_uint8_t srcSkt;
+ nd_uint8_t type;
+};
+
+struct atShortDDP {
+ nd_uint16_t length;
+ nd_uint8_t dstSkt;
+ nd_uint8_t srcSkt;
+ nd_uint8_t type;
+};
+
+#define ddpMaxWKS 0x7F
+#define ddpMaxData 586
+#define ddpLengthMask 0x3FF
+#define ddpHopShift 10
+#define ddpSize 13 /* size of DDP header (avoid struct padding) */
+#define ddpSSize 5
+#define ddpWKS 128 /* boundary of DDP well known sockets */
+#define ddpRTMP 1 /* RTMP type */
+#define ddpRTMPrequest 5 /* RTMP request type */
+#define ddpNBP 2 /* NBP type */
+#define ddpATP 3 /* ATP type */
+#define ddpECHO 4 /* ECHO type */
+#define ddpIP 22 /* IP type */
+#define ddpARP 23 /* ARP type */
+#define ddpEIGRP 88 /* EIGRP over Appletalk */
+#define ddpKLAP 0x4b /* Kinetics KLAP type */
+
+
+/* AppleTalk Transaction Protocol */
+
+struct atATP {
+ nd_uint8_t control;
+ nd_uint8_t bitmap;
+ nd_uint16_t transID;
+ nd_uint32_t userData;
+};
+
+#define atpReqCode 0x40
+#define atpRspCode 0x80
+#define atpRelCode 0xC0
+#define atpXO 0x20
+#define atpEOM 0x10
+#define atpSTS 0x08
+#define atpFlagMask 0x3F
+#define atpControlMask 0xF8
+#define atpMaxNum 8
+#define atpMaxData 578
+
+
+/* AppleTalk Echo Protocol */
+
+struct atEcho {
+ nd_uint8_t echoFunction;
+ nd_uint8_t echoData[1]; /* Should be [], C99-style */
+};
+
+#define echoSkt 4 /* the echoer socket */
+#define echoSize 1 /* size of echo header */
+#define echoRequest 1 /* echo request */
+#define echoReply 2 /* echo request */
+
+
+/* Name Binding Protocol */
+
+struct atNBP {
+ nd_uint8_t control;
+ nd_uint8_t id;
+};
+
+struct atNBPtuple {
+ nd_uint16_t net;
+ nd_uint8_t node;
+ nd_uint8_t skt;
+ nd_uint8_t enumerator;
+};
+
+#define nbpBrRq 0x10
+#define nbpLkUp 0x20
+#define nbpLkUpReply 0x30
+
+#define nbpNIS 2
+#define nbpTupleMax 15
+
+#define nbpHeaderSize 2
+#define nbpTupleSize 5
+
+#define nbpSkt 2 /* NIS */
+
+
+/* Routing Table Maint. Protocol */
+
+#define rtmpSkt 1 /* number of RTMP socket */
+#define rtmpSize 4 /* minimum size */
+#define rtmpTupleSize 3
+
+
+/* Zone Information Protocol */
+
+struct zipHeader {
+ nd_uint8_t command;
+ nd_uint8_t netcount;
+};
+
+#define zipHeaderSize 2
+#define zipQuery 1
+#define zipReply 2
+#define zipTakedown 3
+#define zipBringup 4
+#define ddpZIP 6
+#define zipSkt 6
+#define GetMyZone 7
+#define GetZoneList 8
+
+/*
+ * UDP port range used for ddp-in-udp encapsulation is 16512-16639
+ * for client sockets (128-255) and 200-327 for server sockets
+ * (0-127). We also try to recognize the pre-April 88 server
+ * socket range of 768-895.
+ */
+#define atalk_port(p) \
+ (((unsigned)((p) - 16512) < 128) || \
+ ((unsigned)((p) - 200) < 128) || \
+ ((unsigned)((p) - 768) < 128))