X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/8cba55d69251f64ffa9f169d9a1d6ab2904cb96a..47fc89d711eec0a073d9b3b293a1af901b5bd791:/llc.h

diff --git a/llc.h b/llc.h
index b812bf1c..ec8d069e 100644
--- a/llc.h
+++ b/llc.h
@@ -17,47 +17,15 @@
  * 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.
- *
- * @(#) $Header: /tcpdump/master/tcpdump/llc.h,v 1.10 2001-01-28 09:46:42 guy Exp $ (LBL)
- */
-
-/*
- * This stuff should come from a system header file, but there's no
- * obviously portable way to do that and it's not really going
- * to change from system to system.
  */
 
 /*
- * A somewhat abstracted view of the LLC header
+ * Definitions for information in the LLC header.
  */
 
-struct llc {
-	u_int8_t dsap;
-	u_int8_t ssap;
-	union {
-		u_int8_t u_ctl;
-		u_int16_t is_ctl;
-		struct {
-			u_int8_t snap_ui;
-			u_int8_t snap_pi[5];
-		} snap;
-		struct {
-			u_int8_t snap_ui;
-			u_int8_t snap_orgcode[3];
-			u_int8_t snap_ethertype[2];
-		} snap_ether;
-	} ctl;
-};
-
-#define	llcui		ctl.snap.snap_ui
-#define	llcpi		ctl.snap.snap_pi
-#define	orgcode		ctl.snap_ether.snap_orgcode
-#define	ethertype	ctl.snap_ether.snap_ethertype
-#define	llcis		ctl.is_ctl
-#define	llcu		ctl.u_ctl
-
 #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
@@ -74,7 +42,7 @@ struct llc {
 #define	LLC_XID		0xaf
 #define	LLC_FRMR	0x87
 
-#define	LLC_S_CMD(is)	(((is) >> 1) & 0x03)
+#define	LLC_S_CMD(is)	(((is) >> 2) & 0x03)
 #define	LLC_RR		0x0001
 #define	LLC_RNR		0x0005
 #define	LLC_REJ		0x0009
@@ -88,12 +56,15 @@ struct llc {
 #ifndef LLCSAP_GLOBAL
 #define	LLCSAP_GLOBAL		0xff
 #endif
-#ifndef LLCSAP_8021B
+#ifndef LLCSAP_8021B_I
 #define	LLCSAP_8021B_I		0x02
 #endif
-#ifndef LLCSAP_8021B
+#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
@@ -124,3 +95,28 @@ struct llc {
 #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 */