Replace the "ngsniffer_atm" with an "atm" pseudo-header, which isn't

just an image of the ATM Sniffer data.  This means that Ethereal doesn't
have to know any ATM Sniffer-specific details (that's all hidden in
Wiretap), and allows us to add to that pseudo-header fields, traffic
types, etc. unknown to ATM Sniffers.

Have Wiretap map VPI 0/VCI 5 to the signalling AAL - for some capture
files, this might not be necessary, as they may mark all signalling
traffic as such, but, on other platforms, we don't know the AAL, so we
assume AAL5 except for 0/5 traffic.  Doing it in Wiretap lets us hide
those details from Ethereal (and lets Ethereal interpret 0/5 traffic as
non-signalling traffic, in case that happens to be what it is).

We may know that traffic is LANE, but not whether it's LE Control or
emulated 802.3/802.5; handle that case.


git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@5302 f5534014-38df-0310-8fa8-9805f1628bb7

1 files changed, 76 insertions, 64 deletions

diff --git a/wiretap/wtap.h b/wiretap/wtap.h
index 84bf02f1fc..f044bc7c3e 100644
--- a/wiretap/wtap.h
+++ b/wiretap/wtap.h
@@ -1,6 +1,6 @@
 /* wtap.h
  *
- * $Id: wtap.h,v 1.110 2002/04/09 08:15:04 guy Exp $
+ * $Id: wtap.h,v 1.111 2002/04/30 08:48:27 guy Exp $
  *
  * Wiretap Library
  * Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
@@ -190,12 +190,76 @@ struct x25_phdr {
 	guint8	flags; /* ENCAP_LAPB, ENCAP_V120 : 1st bit means From DCE */
 };
 
-/* Packet "pseudo-header" for ATM Sniffer capture files. */
-struct ngsniffer_atm_phdr {
-	guint8	AppTrafType;	/* traffic type */
-	guint8	AppHLType;	/* protocol type */
-	guint16	Vpi;		/* virtual path identifier */
-	guint16	Vci;		/* virtual circuit identifier */
+/* Packet "pseudo-header" for ATM capture files.
+   Not all of this information is supplied by all capture types. */
+
+/*
+ * AAL types.
+ */
+#define AAL_UNKNOWN	0	/* AAL unknown */
+#define AAL_1		1	/* AAL1 */
+#define AAL_2		2	/* AAL2 */
+#define AAL_3_4		3	/* AAL3/4 */
+#define AAL_5		4	/* AAL5 */
+#define AAL_USER	5	/* User AAL */
+#define AAL_SIGNALLING	6	/* Signaling AAL */
+#define AAL_OAMCELL	7	/* OAM cell */
+
+/*
+ * Traffic types.
+ */
+#define TRAF_UNKNOWN	0	/* Unknown */
+#define TRAF_LLCMX	1	/* LLC multiplexed (RFC 1483) */
+#define TRAF_VCMX	2	/* VC multiplexed (RFC 1483) */
+#define TRAF_LANE	3	/* LAN Emulation */
+#define TRAF_ILMI	4	/* ILMI */
+#define TRAF_FR		5	/* Frame Relay */
+#define TRAF_SPANS	6	/* FORE SPANS */
+#define TRAF_IPSILON	7	/* Ipsilon */
+
+/*
+ * Traffic subtypes.
+ */
+#define	TRAF_ST_UNKNOWN		0	/* Unknown */
+
+/*
+ * For TRAF_VCMX:
+ */
+#define	TRAF_ST_VCMX_802_3_FCS	1	/* 802.3 with an FCS */
+#define	TRAF_ST_VCMX_802_4_FCS	2	/* 802.4 with an FCS */
+#define	TRAF_ST_VCMX_802_5_FCS	3	/* 802.5 with an FCS */
+#define	TRAF_ST_VCMX_FDDI_FCS	4	/* FDDI with an FCS */
+#define	TRAF_ST_VCMX_802_6_FCS	5	/* 802.6 with an FCS */
+#define	TRAF_ST_VCMX_802_3	7	/* 802.3 without an FCS */
+#define	TRAF_ST_VCMX_802_4	8	/* 802.4 without an FCS */
+#define	TRAF_ST_VCMX_802_5	9	/* 802.5 without an FCS */
+#define	TRAF_ST_VCMX_FDDI	10	/* FDDI without an FCS */
+#define	TRAF_ST_VCMX_802_6	11	/* 802.6 without an FCS */
+#define	TRAF_ST_VCMX_FRAGMENTS	12	/* Fragments */
+#define	TRAF_ST_VCMX_BPDU	13	/* BPDU */
+
+/*
+ * For TRAF_LANE:
+ */
+#define	TRAF_ST_LANE_LE_CTRL	1	/* LANE: LE Ctrl */
+#define	TRAF_ST_LANE_802_3	2	/* LANE: 802.3 */
+#define	TRAF_ST_LANE_802_5	3	/* LANE: 802.5 */
+#define	TRAF_ST_LANE_802_3_MC	4	/* LANE: 802.3 multicast */
+#define	TRAF_ST_LANE_802_5_MC	5	/* LANE: 802.5 multicast */
+
+/*
+ * For TRAF_IPSILON:
+ */
+#define	TRAF_ST_IPSILON_FT0	1	/* Ipsilon: Flow Type 0 */
+#define	TRAF_ST_IPSILON_FT1	2	/* Ipsilon: Flow Type 1 */
+#define	TRAF_ST_IPSILON_FT2	3	/* Ipsilon: Flow Type 2 */
+
+struct atm_phdr {
+	guint8	aal;		/* AAL of the traffic */
+	guint8	type;		/* traffic type */
+	guint8	subtype;	/* traffic subtype */
+	guint16	vpi;		/* virtual path identifier */
+	guint16	vci;		/* virtual circuit identifier */
 	guint16	channel;	/* link: 0 for DCE, 1 for DTE */
 	guint16	cells;		/* number of cells */
 	guint16	aal5t_u2u;	/* user-to-user indicator */
@@ -233,64 +297,12 @@ struct ieee_802_11_phdr {
 	guint8	signal_level;	/* percentage */
 };
 
-/*
- * Bits in AppTrafType.
- *
- * For AAL types other than AAL5, the packet data is presumably for a
- * single cell, not a reassembled frame, as the ATM Sniffer manual says
- * it dosn't reassemble cells other than AAL5 cells.
- */
-#define	ATT_AALTYPE		0x0F	/* AAL type: */
-#define	ATT_AAL_UNKNOWN		0x00	/* Unknown AAL */
-#define	ATT_AAL1		0x01	/* AAL1 */
-#define	ATT_AAL3_4		0x02	/* AAL3/4 */
-#define	ATT_AAL5		0x03	/* AAL5 */
-#define	ATT_AAL_USER		0x04	/* User AAL */
-#define	ATT_AAL_SIGNALLING	0x05	/* Signaling AAL */
-#define	ATT_OAMCELL		0x06	/* OAM cell */
-
-#define	ATT_HLTYPE		0xF0	/* Higher-layer type: */
-#define	ATT_HL_UNKNOWN		0x00	/* unknown */
-#define	ATT_HL_LLCMX		0x10	/* LLC multiplexed (probably RFC 1483) */
-#define	ATT_HL_VCMX		0x20	/* VC multiplexed (probably RFC 1483) */
-#define	ATT_HL_LANE		0x30	/* LAN Emulation */
-#define	ATT_HL_ILMI		0x40	/* ILMI */
-#define	ATT_HL_FRMR		0x50	/* Frame Relay */
-#define	ATT_HL_SPANS		0x60	/* FORE SPANS */
-#define	ATT_HL_IPSILON		0x70	/* Ipsilon */
-
-/*
- * Values for AppHLType; the interpretation depends on the ATT_HLTYPE
- * bits in AppTrafType.
- */
-#define	AHLT_UNKNOWN		0x0
-#define	AHLT_VCMX_802_3_FCS	0x1	/* VCMX: 802.3 FCS */
-#define	AHLT_LANE_LE_CTRL	0x1	/* LANE: LE Ctrl */
-#define	AHLT_IPSILON_FT0	0x1	/* Ipsilon: Flow Type 0 */
-#define	AHLT_VCMX_802_4_FCS	0x2	/* VCMX: 802.4 FCS */
-#define	AHLT_LANE_802_3		0x2	/* LANE: 802.3 */
-#define	AHLT_IPSILON_FT1	0x2	/* Ipsilon: Flow Type 1 */
-#define	AHLT_VCMX_802_5_FCS	0x3	/* VCMX: 802.5 FCS */
-#define	AHLT_LANE_802_5		0x3	/* LANE: 802.5 */
-#define	AHLT_IPSILON_FT2	0x3	/* Ipsilon: Flow Type 2 */
-#define	AHLT_VCMX_FDDI_FCS	0x4	/* VCMX: FDDI FCS */
-#define	AHLT_LANE_802_3_MC	0x4	/* LANE: 802.3 multicast */
-#define	AHLT_VCMX_802_6_FCS	0x5	/* VCMX: 802.6 FCS */
-#define	AHLT_LANE_802_5_MC	0x5	/* LANE: 802.5 multicast */
-#define	AHLT_VCMX_802_3		0x7	/* VCMX: 802.3 */
-#define	AHLT_VCMX_802_4		0x8	/* VCMX: 802.4 */
-#define	AHLT_VCMX_802_5		0x9	/* VCMX: 802.5 */
-#define	AHLT_VCMX_FDDI		0xa	/* VCMX: FDDI */
-#define	AHLT_VCMX_802_6		0xb	/* VCMX: 802.6 */
-#define	AHLT_VCMX_FRAGMENTS	0xc	/* VCMX: Fragments */
-#define	AHLT_VCMX_BPDU		0xe	/* VCMX: BPDU */
-
 union wtap_pseudo_header {
-	struct x25_phdr			x25;
-	struct ngsniffer_atm_phdr	ngsniffer_atm;
-	struct ascend_phdr		ascend;
-	struct p2p_phdr			p2p;
-	struct ieee_802_11_phdr		ieee_802_11;
+	struct x25_phdr		x25;
+	struct atm_phdr		atm;
+	struct ascend_phdr	ascend;
+	struct p2p_phdr		p2p;
+	struct ieee_802_11_phdr	ieee_802_11;
 };
 
 struct wtap_pkthdr {