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+/*
+ * Copyright (c) 1993, 1994, 1997
+ * 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.
+ */
+
+/*
+ * Definitions for information in the LLC header.
+ */
+
+#define LLC_U_FMT 3
+#define LLC_GSAP 1
+#define LLC_IG 1 /* Individual / Group */
+#define LLC_S_FMT 1
+
+#define LLC_U_POLL 0x10
+#define LLC_IS_POLL 0x0100
+#define LLC_XID_FI 0x81
+
+#define LLC_U_CMD(u) ((u) & 0xef)
+#define LLC_UI 0x03
+#define LLC_UA 0x63
+#define LLC_DISC 0x43
+#define LLC_DM 0x0f
+#define LLC_SABME 0x6f
+#define LLC_TEST 0xe3
+#define LLC_XID 0xaf
+#define LLC_FRMR 0x87
+
+#define LLC_S_CMD(is) (((is) >> 2) & 0x03)
+#define LLC_RR 0x0001
+#define LLC_RNR 0x0005
+#define LLC_REJ 0x0009
+
+#define LLC_IS_NR(is) (((is) >> 9) & 0x7f)
+#define LLC_I_NS(is) (((is) >> 1) & 0x7f)
+
+#ifndef LLCSAP_NULL
+#define LLCSAP_NULL 0x00
+#endif
+#ifndef LLCSAP_GLOBAL
+#define LLCSAP_GLOBAL 0xff
+#endif
+#ifndef LLCSAP_8021B_I
+#define LLCSAP_8021B_I 0x02
+#endif
+#ifndef LLCSAP_8021B_G
+#define LLCSAP_8021B_G 0x03
+#endif
+#ifndef LLCSAP_SNA
+#define LLCSAP_SNA 0x04
+#endif
+#ifndef LLCSAP_IP
+#define LLCSAP_IP 0x06
+#endif
+#ifndef LLCSAP_PROWAYNM
+#define LLCSAP_PROWAYNM 0x0e
+#endif
+#ifndef LLCSAP_8021D
+#define LLCSAP_8021D 0x42
+#endif
+#ifndef LLCSAP_RS511
+#define LLCSAP_RS511 0x4e
+#endif
+#ifndef LLCSAP_ISO8208
+#define LLCSAP_ISO8208 0x7e
+#endif
+#ifndef LLCSAP_PROWAY
+#define LLCSAP_PROWAY 0x8e
+#endif
+#ifndef LLCSAP_SNAP
+#define LLCSAP_SNAP 0xaa
+#endif
+#ifndef LLCSAP_IPX
+#define LLCSAP_IPX 0xe0
+#endif
+#ifndef LLCSAP_NETBEUI
+#define LLCSAP_NETBEUI 0xf0
+#endif
+#ifndef LLCSAP_ISONS
+#define LLCSAP_ISONS 0xfe
+#endif
+
+/*
+ * PIDs for use with OUI_CISCO.
+ */
+#define PID_CISCO_CDP 0x2000 /* Cisco Discovery Protocol */
+#define PID_CISCO_VTP 0x2003 /* Cisco VLAN Trunk Protocol */
+#define PID_CISCO_DTP 0x2004 /* Cisco Dynamic Trunk Protocol */
+#define PID_CISCO_UDLD 0x0111 /* Unidirectional Link Detection */
+#define PID_CISCO_PVST 0x010b /* Per VLAN Spanning Tree+ and RPVST+ */
+#define PID_CISCO_VLANBRIDGE 0x010c /* "VLAN Bridge", according to Wireshark */
+
+/*
+ * PIDs for use with OUI_RFC2684.
+ */
+#define PID_RFC2684_ETH_FCS 0x0001 /* Ethernet, with FCS */
+#define PID_RFC2684_ETH_NOFCS 0x0007 /* Ethernet, without FCS */
+#define PID_RFC2684_802_4_FCS 0x0002 /* 802.4, with FCS */
+#define PID_RFC2684_802_4_NOFCS 0x0008 /* 802.4, without FCS */
+#define PID_RFC2684_802_5_FCS 0x0003 /* 802.5, with FCS */
+#define PID_RFC2684_802_5_NOFCS 0x0009 /* 802.5, without FCS */
+#define PID_RFC2684_FDDI_FCS 0x0004 /* FDDI, with FCS */
+#define PID_RFC2684_FDDI_NOFCS 0x000a /* FDDI, without FCS */
+#define PID_RFC2684_802_6_FCS 0x0005 /* 802.6, with FCS */
+#define PID_RFC2684_802_6_NOFCS 0x000b /* 802.6, without FCS */
+#define PID_RFC2684_BPDU 0x000e /* BPDUs */