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-rw-r--r--contrib/tcpdump/print-atm.c451
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diff --git a/contrib/tcpdump/print-atm.c b/contrib/tcpdump/print-atm.c
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+/*
+ * Copyright (c) 1994, 1995, 1996, 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.
+ *
+ * $FreeBSD$
+ */
+#ifndef lint
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.48.2.1 2007-10-22 19:39:12 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <pcap.h>
+#include <string.h>
+
+#include "interface.h"
+#include "extract.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+#include "atm.h"
+#include "atmuni31.h"
+#include "llc.h"
+
+#include "ether.h"
+
+#define OAM_CRC10_MASK 0x3ff
+#define OAM_PAYLOAD_LEN 48
+#define OAM_FUNCTION_SPECIFIC_LEN 45 /* this excludes crc10 and cell-type/function-type */
+#define OAM_CELLTYPE_FUNCTYPE_LEN 1
+
+struct tok oam_f_values[] = {
+ { VCI_OAMF4SC, "OAM F4 (segment)" },
+ { VCI_OAMF4EC, "OAM F4 (end)" },
+ { 0, NULL }
+};
+
+struct tok atm_pty_values[] = {
+ { 0x0, "user data, uncongested, SDU 0" },
+ { 0x1, "user data, uncongested, SDU 1" },
+ { 0x2, "user data, congested, SDU 0" },
+ { 0x3, "user data, congested, SDU 1" },
+ { 0x4, "VCC OAM F5 flow segment" },
+ { 0x5, "VCC OAM F5 flow end-to-end" },
+ { 0x6, "Traffic Control and resource Mgmt" },
+ { 0, NULL }
+};
+
+#define OAM_CELLTYPE_FM 0x1
+#define OAM_CELLTYPE_PM 0x2
+#define OAM_CELLTYPE_AD 0x8
+#define OAM_CELLTYPE_SM 0xf
+
+struct tok oam_celltype_values[] = {
+ { OAM_CELLTYPE_FM, "Fault Management" },
+ { OAM_CELLTYPE_PM, "Performance Management" },
+ { OAM_CELLTYPE_AD, "activate/deactivate" },
+ { OAM_CELLTYPE_SM, "System Management" },
+ { 0, NULL }
+};
+
+#define OAM_FM_FUNCTYPE_AIS 0x0
+#define OAM_FM_FUNCTYPE_RDI 0x1
+#define OAM_FM_FUNCTYPE_CONTCHECK 0x4
+#define OAM_FM_FUNCTYPE_LOOPBACK 0x8
+
+struct tok oam_fm_functype_values[] = {
+ { OAM_FM_FUNCTYPE_AIS, "AIS" },
+ { OAM_FM_FUNCTYPE_RDI, "RDI" },
+ { OAM_FM_FUNCTYPE_CONTCHECK, "Continuity Check" },
+ { OAM_FM_FUNCTYPE_LOOPBACK, "Loopback" },
+ { 0, NULL }
+};
+
+struct tok oam_pm_functype_values[] = {
+ { 0x0, "Forward Monitoring" },
+ { 0x1, "Backward Reporting" },
+ { 0x2, "Monitoring and Reporting" },
+ { 0, NULL }
+};
+
+struct tok oam_ad_functype_values[] = {
+ { 0x0, "Performance Monitoring" },
+ { 0x1, "Continuity Check" },
+ { 0, NULL }
+};
+
+#define OAM_FM_LOOPBACK_INDICATOR_MASK 0x1
+
+struct tok oam_fm_loopback_indicator_values[] = {
+ { 0x0, "Reply" },
+ { 0x1, "Request" },
+ { 0, NULL }
+};
+
+static const struct tok *oam_functype_values[16] = {
+ NULL,
+ oam_fm_functype_values, /* 1 */
+ oam_pm_functype_values, /* 2 */
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ oam_ad_functype_values, /* 8 */
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL
+};
+
+/*
+ * Print an RFC 1483 LLC-encapsulated ATM frame.
+ */
+static void
+atm_llc_print(const u_char *p, int length, int caplen)
+{
+ u_short extracted_ethertype;
+
+ if (!llc_print(p, length, caplen, NULL, NULL,
+ &extracted_ethertype)) {
+ /* ether_type not known, print raw packet */
+ if (extracted_ethertype) {
+ printf("(LLC %s) ",
+ etherproto_string(htons(extracted_ethertype)));
+ }
+ if (!suppress_default_print)
+ default_print(p, caplen);
+ }
+}
+
+/*
+ * Given a SAP value, generate the LLC header value for a UI packet
+ * with that SAP as the source and destination SAP.
+ */
+#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03)
+
+/*
+ * This is the top level routine of the printer. 'p' points
+ * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
+u_int
+atm_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+ u_int caplen = h->caplen;
+ u_int length = h->len;
+ u_int32_t llchdr;
+ u_int hdrlen = 0;
+
+ if (caplen < 8) {
+ printf("[|atm]");
+ return (caplen);
+ }
+
+ /* Cisco Style NLPID ? */
+ if (*p == LLC_UI) {
+ if (eflag)
+ printf("CNLPID ");
+ isoclns_print(p+1, length-1, caplen-1);
+ return hdrlen;
+ }
+
+ /*
+ * Extract the presumed LLC header into a variable, for quick
+ * testing.
+ * Then check for a header that's neither a header for a SNAP
+ * packet nor an RFC 2684 routed NLPID-formatted PDU nor
+ * an 802.2-but-no-SNAP IP packet.
+ */
+ llchdr = EXTRACT_24BITS(p);
+ if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) &&
+ llchdr != LLC_UI_HDR(LLCSAP_ISONS) &&
+ llchdr != LLC_UI_HDR(LLCSAP_IP)) {
+ /*
+ * XXX - assume 802.6 MAC header from Fore driver.
+ *
+ * Unfortunately, the above list doesn't check for
+ * all known SAPs, doesn't check for headers where
+ * the source and destination SAP aren't the same,
+ * and doesn't check for non-UI frames. It also
+ * runs the risk of an 802.6 MAC header that happens
+ * to begin with one of those values being
+ * incorrectly treated as an 802.2 header.
+ *
+ * So is that Fore driver still around? And, if so,
+ * is it still putting 802.6 MAC headers on ATM
+ * packets? If so, could it be changed to use a
+ * new DLT_IEEE802_6 value if we added it?
+ */
+ if (eflag)
+ printf("%08x%08x %08x%08x ",
+ EXTRACT_32BITS(p),
+ EXTRACT_32BITS(p+4),
+ EXTRACT_32BITS(p+8),
+ EXTRACT_32BITS(p+12));
+ p += 20;
+ length -= 20;
+ caplen -= 20;
+ hdrlen += 20;
+ }
+ atm_llc_print(p, length, caplen);
+ return (hdrlen);
+}
+
+/*
+ * ATM signalling.
+ */
+static struct tok msgtype2str[] = {
+ { CALL_PROCEED, "Call_proceeding" },
+ { CONNECT, "Connect" },
+ { CONNECT_ACK, "Connect_ack" },
+ { SETUP, "Setup" },
+ { RELEASE, "Release" },
+ { RELEASE_DONE, "Release_complete" },
+ { RESTART, "Restart" },
+ { RESTART_ACK, "Restart_ack" },
+ { STATUS, "Status" },
+ { STATUS_ENQ, "Status_enquiry" },
+ { ADD_PARTY, "Add_party" },
+ { ADD_PARTY_ACK, "Add_party_ack" },
+ { ADD_PARTY_REJ, "Add_party_reject" },
+ { DROP_PARTY, "Drop_party" },
+ { DROP_PARTY_ACK, "Drop_party_ack" },
+ { 0, NULL }
+};
+
+static void
+sig_print(const u_char *p, int caplen)
+{
+ bpf_u_int32 call_ref;
+
+ if (caplen < PROTO_POS) {
+ printf("[|atm]");
+ return;
+ }
+ if (p[PROTO_POS] == Q2931) {
+ /*
+ * protocol:Q.2931 for User to Network Interface
+ * (UNI 3.1) signalling
+ */
+ printf("Q.2931");
+ if (caplen < MSG_TYPE_POS) {
+ printf(" [|atm]");
+ return;
+ }
+ printf(":%s ",
+ tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS]));
+
+ if (caplen < CALL_REF_POS+3) {
+ printf("[|atm]");
+ return;
+ }
+ call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]);
+ printf("CALL_REF:0x%06x", call_ref);
+ } else {
+ /* SCCOP with some unknown protocol atop it */
+ printf("SSCOP, proto %d ", p[PROTO_POS]);
+ }
+}
+
+/*
+ * Print an ATM PDU (such as an AAL5 PDU).
+ */
+void
+atm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length,
+ u_int caplen)
+{
+ if (eflag)
+ printf("VPI:%u VCI:%u ", vpi, vci);
+
+ if (vpi == 0) {
+ switch (vci) {
+
+ case VCI_PPC:
+ sig_print(p, caplen);
+ return;
+
+ case VCI_BCC:
+ printf("broadcast sig: ");
+ return;
+
+ case VCI_OAMF4SC: /* fall through */
+ case VCI_OAMF4EC:
+ oam_print(p, length, ATM_OAM_HEC);
+ return;
+
+ case VCI_METAC:
+ printf("meta: ");
+ return;
+
+ case VCI_ILMIC:
+ printf("ilmi: ");
+ snmp_print(p, length);
+ return;
+ }
+ }
+
+ switch (traftype) {
+
+ case ATM_LLC:
+ default:
+ /*
+ * Assumes traffic is LLC if unknown.
+ */
+ atm_llc_print(p, length, caplen);
+ break;
+
+ case ATM_LANE:
+ lane_print(p, length, caplen);
+ break;
+ }
+}
+
+struct oam_fm_loopback_t {
+ u_int8_t loopback_indicator;
+ u_int8_t correlation_tag[4];
+ u_int8_t loopback_id[12];
+ u_int8_t source_id[12];
+ u_int8_t unused[16];
+};
+
+struct oam_fm_ais_rdi_t {
+ u_int8_t failure_type;
+ u_int8_t failure_location[16];
+ u_int8_t unused[28];
+};
+
+int
+oam_print (const u_char *p, u_int length, u_int hec) {
+
+ u_int32_t cell_header;
+ u_int16_t vpi, vci, cksum, cksum_shouldbe, idx;
+ u_int8_t cell_type, func_type, payload, clp;
+
+ union {
+ const struct oam_fm_loopback_t *oam_fm_loopback;
+ const struct oam_fm_ais_rdi_t *oam_fm_ais_rdi;
+ } oam_ptr;
+
+
+ cell_header = EXTRACT_32BITS(p+hec);
+ cell_type = ((*(p+ATM_HDR_LEN_NOHEC+hec))>>4) & 0x0f;
+ func_type = (*(p+ATM_HDR_LEN_NOHEC+hec)) & 0x0f;
+
+ vpi = (cell_header>>20)&0xff;
+ vci = (cell_header>>4)&0xffff;
+ payload = (cell_header>>1)&0x7;
+ clp = cell_header&0x1;
+
+ printf("%s, vpi %u, vci %u, payload [ %s ], clp %u, length %u",
+ tok2str(oam_f_values, "OAM F5", vci),
+ vpi, vci,
+ tok2str(atm_pty_values, "Unknown", payload),
+ clp, length);
+
+ if (!vflag) {
+ return 1;
+ }
+
+ printf("\n\tcell-type %s (%u)",
+ tok2str(oam_celltype_values, "unknown", cell_type),
+ cell_type);
+
+ if (oam_functype_values[cell_type] == NULL)
+ printf(", func-type unknown (%u)", func_type);
+ else
+ printf(", func-type %s (%u)",
+ tok2str(oam_functype_values[cell_type],"none",func_type),
+ func_type);
+
+ p += ATM_HDR_LEN_NOHEC + hec;
+
+ switch (cell_type << 4 | func_type) {
+ case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_LOOPBACK):
+ oam_ptr.oam_fm_loopback = (const struct oam_fm_loopback_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
+ printf("\n\tLoopback-Indicator %s, Correlation-Tag 0x%08x",
+ tok2str(oam_fm_loopback_indicator_values,
+ "Unknown",
+ oam_ptr.oam_fm_loopback->loopback_indicator & OAM_FM_LOOPBACK_INDICATOR_MASK),
+ EXTRACT_32BITS(&oam_ptr.oam_fm_loopback->correlation_tag));
+ printf("\n\tLocation-ID ");
+ for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->loopback_id); idx++) {
+ if (idx % 2) {
+ printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx]));
+ }
+ }
+ printf("\n\tSource-ID ");
+ for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) {
+ if (idx % 2) {
+ printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx]));
+ }
+ }
+ break;
+
+ case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_AIS):
+ case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_RDI):
+ oam_ptr.oam_fm_ais_rdi = (const struct oam_fm_ais_rdi_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN);
+ printf("\n\tFailure-type 0x%02x", oam_ptr.oam_fm_ais_rdi->failure_type);
+ printf("\n\tLocation-ID ");
+ for (idx = 0; idx < sizeof(oam_ptr.oam_fm_ais_rdi->failure_location); idx++) {
+ if (idx % 2) {
+ printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx]));
+ }
+ }
+ break;
+
+ case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_CONTCHECK):
+ /* FIXME */
+ break;
+
+ default:
+ break;
+ }
+
+ /* crc10 checksum verification */
+ cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN)
+ & OAM_CRC10_MASK;
+ cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN);
+
+ printf("\n\tcksum 0x%03x (%scorrect)",
+ cksum,
+ cksum_shouldbe == 0 ? "" : "in");
+
+ return 1;
+}
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