Add tcpdump and libpcap.

- Update the file builder generator to handle generator specific cflags and
  includes. The tcpdump and libpcap have localised headers and need specific
  headers paths to see them. There are also module specific flags and these
  need to be passed to the lex and yacc generators.

- Add the tcpdump support.

1 files changed, 647 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-cfm.c b/freebsd/contrib/tcpdump/print-cfm.c
new file mode 100644
index 00000000..4db453a4
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-cfm.c
@@ -0,0 +1,647 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 1998-2006 The TCPDUMP project
+ *
+ * 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, and (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.
+ * 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.
+ *
+ * Support for the IEEE Connectivity Fault Management Protocols as per 802.1ag.
+ *
+ * Original code by Hannes Gredler (hannes@juniper.net)
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-cfm.c,v 1.5 2007-07-24 16:01:42 hannes Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "interface.h"
+#include "extract.h"
+#include "ether.h"
+#include "addrtoname.h"
+#include "oui.h"
+#include "af.h"
+
+/*
+ * Prototypes
+ */
+const char * cfm_egress_id_string(register const u_char *);
+int cfm_mgmt_addr_print(register const u_char *);
+
+struct cfm_common_header_t {
+    u_int8_t mdlevel_version;
+    u_int8_t opcode;
+    u_int8_t flags;
+    u_int8_t first_tlv_offset;
+};
+
+#define	CFM_VERSION 0
+#define CFM_EXTRACT_VERSION(x) (((x)&0x1f))
+#define CFM_EXTRACT_MD_LEVEL(x) (((x)&0xe0)>>5)
+
+#define	CFM_OPCODE_CCM 1
+#define	CFM_OPCODE_LBR 2
+#define	CFM_OPCODE_LBM 3
+#define	CFM_OPCODE_LTR 4
+#define	CFM_OPCODE_LTM 5
+
+static const struct tok cfm_opcode_values[] = {
+    { CFM_OPCODE_CCM, "Continouity Check Message"},
+    { CFM_OPCODE_LBR, "Loopback Reply"},
+    { CFM_OPCODE_LBM, "Loopback Message"},
+    { CFM_OPCODE_LTR, "Linktrace Reply"},
+    { CFM_OPCODE_LTM, "Linktrace Message"},
+    { 0, NULL}
+};
+
+/*
+ * Message Formats.
+ */
+struct cfm_ccm_t {
+    u_int8_t sequence[4];
+    u_int8_t ma_epi[2];
+    u_int8_t md_nameformat;
+    u_int8_t md_namelength;
+    u_int8_t md_name[46]; /* md name and short ma name */
+    u_int8_t reserved_itu[16];
+    u_int8_t reserved[6];
+};
+
+/*
+ * Timer Bases for the CCM Interval field.
+ * Expressed in units of seconds.
+ */
+const float ccm_interval_base[8] = {0, 0.003333, 0.01, 0.1, 1, 10, 60, 600};
+#define CCM_INTERVAL_MIN_MULTIPLIER 3.25
+#define CCM_INTERVAL_MAX_MULTIPLIER 3.5
+
+#define CFM_CCM_RDI_FLAG 0x80
+#define CFM_EXTRACT_CCM_INTERVAL(x) (((x)&0x07))
+
+#define CFM_CCM_MD_FORMAT_8021 0
+#define CFM_CCM_MD_FORMAT_NONE 1
+#define CFM_CCM_MD_FORMAT_DNS  2
+#define CFM_CCM_MD_FORMAT_MAC  3
+#define CFM_CCM_MD_FORMAT_CHAR 4
+
+static const struct tok cfm_md_nameformat_values[] = {
+    { CFM_CCM_MD_FORMAT_8021, "IEEE 802.1"},
+    { CFM_CCM_MD_FORMAT_NONE, "No MD Name present"},
+    { CFM_CCM_MD_FORMAT_DNS, "DNS string"},
+    { CFM_CCM_MD_FORMAT_MAC, "MAC + 16Bit Integer"},
+    { CFM_CCM_MD_FORMAT_CHAR, "Character string"},
+    { 0, NULL}
+};
+
+#define CFM_CCM_MA_FORMAT_8021 0
+#define CFM_CCM_MA_FORMAT_VID  1
+#define CFM_CCM_MA_FORMAT_CHAR 2
+#define CFM_CCM_MA_FORMAT_INT  3
+#define CFM_CCM_MA_FORMAT_VPN  4
+
+static const struct tok cfm_ma_nameformat_values[] = {
+    { CFM_CCM_MA_FORMAT_8021, "IEEE 802.1"},
+    { CFM_CCM_MA_FORMAT_VID, "Primary VID"},
+    { CFM_CCM_MA_FORMAT_CHAR, "Character string"},
+    { CFM_CCM_MA_FORMAT_INT, "16Bit Integer"},
+    { CFM_CCM_MA_FORMAT_VPN, "RFC2685 VPN-ID"},
+    { 0, NULL}
+};
+
+struct cfm_lbm_t {
+    u_int8_t transaction_id[4];
+    u_int8_t reserved[4];
+};
+
+struct cfm_ltm_t {
+    u_int8_t transaction_id[4];
+    u_int8_t egress_id[8];
+    u_int8_t ttl;
+    u_int8_t original_mac[ETHER_ADDR_LEN];
+    u_int8_t target_mac[ETHER_ADDR_LEN];
+    u_int8_t reserved[3];
+};
+
+static const struct tok cfm_ltm_flag_values[] = {
+    { 0x80, "Use Forwarding-DB only"},
+    { 0, NULL}
+};
+
+struct cfm_ltr_t {
+    u_int8_t transaction_id[4];
+    u_int8_t last_egress_id[8];
+    u_int8_t next_egress_id[8];
+    u_int8_t ttl;
+    u_int8_t replay_action;
+    u_int8_t reserved[6];
+};
+
+static const struct tok cfm_ltr_flag_values[] = {
+    { 0x80, "Forwarded"},
+    { 0x40, "Terminal MEP"},
+    { 0, NULL}
+};
+
+static const struct tok cfm_ltr_replay_action_values[] = {
+    { 1, "Exact Match"},
+    { 2, "Filtering DB"},
+    { 3, "MIP CCM DB"},
+    { 0, NULL}
+};
+
+
+#define CFM_TLV_END 0
+#define CFM_TLV_SENDER_ID 1
+#define CFM_TLV_PORT_STATUS 2
+#define CFM_TLV_INTERFACE_STATUS 3
+#define CFM_TLV_DATA 4
+#define CFM_TLV_REPLY_INGRESS 5
+#define CFM_TLV_REPLY_EGRESS 6
+#define CFM_TLV_PRIVATE 31
+
+static const struct tok cfm_tlv_values[] = {
+    { CFM_TLV_END, "End"},
+    { CFM_TLV_SENDER_ID, "Sender ID"},
+    { CFM_TLV_PORT_STATUS, "Port status"},
+    { CFM_TLV_INTERFACE_STATUS, "Interface status"},
+    { CFM_TLV_DATA, "Data"},
+    { CFM_TLV_REPLY_INGRESS, "Reply Ingress"},
+    { CFM_TLV_REPLY_EGRESS, "Reply Egress"},
+    { CFM_TLV_PRIVATE, "Organization Specific"},
+    { 0, NULL}
+};
+
+/*
+ * TLVs
+ */
+
+struct cfm_tlv_header_t {
+    u_int8_t type;
+    u_int8_t length[2];
+};
+
+/* FIXME define TLV formats */
+
+static const struct tok cfm_tlv_port_status_values[] = {
+    { 1, "Blocked"},
+    { 2, "Up"},
+    { 0, NULL}
+};
+
+static const struct tok cfm_tlv_interface_status_values[] = {
+    { 1, "Up"},
+    { 2, "Down"},
+    { 3, "Testing"},
+    { 5, "Dormant"},
+    { 6, "not present"},
+    { 7, "lower Layer down"},
+    { 0, NULL}
+};
+
+#define CFM_CHASSIS_ID_CHASSIS_COMPONENT 1
+#define CFM_CHASSIS_ID_INTERFACE_ALIAS 2
+#define CFM_CHASSIS_ID_PORT_COMPONENT 3
+#define CFM_CHASSIS_ID_MAC_ADDRESS 4
+#define CFM_CHASSIS_ID_NETWORK_ADDRESS 5
+#define CFM_CHASSIS_ID_INTERFACE_NAME 6
+#define CFM_CHASSIS_ID_LOCAL 7
+
+static const struct tok cfm_tlv_senderid_chassisid_values[] = {
+    { 0, "Reserved"},
+    { CFM_CHASSIS_ID_CHASSIS_COMPONENT, "Chassis component"},
+    { CFM_CHASSIS_ID_INTERFACE_ALIAS, "Interface alias"},
+    { CFM_CHASSIS_ID_PORT_COMPONENT, "Port component"},
+    { CFM_CHASSIS_ID_MAC_ADDRESS, "MAC address"},
+    { CFM_CHASSIS_ID_NETWORK_ADDRESS, "Network address"},
+    { CFM_CHASSIS_ID_INTERFACE_NAME, "Interface name"},
+    { CFM_CHASSIS_ID_LOCAL, "Locally assigned"},
+    { 0, NULL}
+};
+
+
+int
+cfm_mgmt_addr_print(register const u_char *tptr) {
+
+    u_int mgmt_addr_type;
+    u_int hexdump =  FALSE;
+
+    /*
+     * Altough AFIs are tpically 2 octects wide,
+     * 802.1ab specifies that this field width
+     * is only once octet
+     */
+    mgmt_addr_type = *tptr;
+    printf("\n\t  Management Address Type %s (%u)",
+           tok2str(af_values, "Unknown", mgmt_addr_type),
+           mgmt_addr_type);
+
+    /*
+     * Resolve the passed in Address.
+     */
+    switch(mgmt_addr_type) {
+    case AFNUM_INET:
+        printf(", %s", ipaddr_string(tptr + 1));
+        break;
+
+#ifdef INET6
+    case AFNUM_INET6:
+        printf(", %s", ip6addr_string(tptr + 1));
+        break;
+#endif
+
+    default:
+        hexdump = TRUE;
+        break;
+    }
+
+    return hexdump;
+}
+
+/*
+ * The egress-ID string is a 16-Bit string plus a MAC address.
+ */
+const char *
+cfm_egress_id_string(register const u_char *tptr) {
+    static char egress_id_buffer[80];
+    
+    snprintf(egress_id_buffer, sizeof(egress_id_buffer),
+             "MAC %0x4x-%s",
+             EXTRACT_16BITS(tptr),
+             etheraddr_string(tptr+2));
+
+    return egress_id_buffer;
+}
+
+void
+cfm_print(register const u_char *pptr, register u_int length) {
+
+    const struct cfm_common_header_t *cfm_common_header;
+    const struct cfm_tlv_header_t *cfm_tlv_header;
+    const u_int8_t *tptr, *tlv_ptr, *ma_name, *ma_nameformat, *ma_namelength;
+    u_int hexdump, tlen, cfm_tlv_len, cfm_tlv_type, ccm_interval;
+
+
+    union {
+        const struct cfm_ccm_t *cfm_ccm;
+        const struct cfm_lbm_t *cfm_lbm;
+        const struct cfm_ltm_t *cfm_ltm;
+        const struct cfm_ltr_t *cfm_ltr;
+    } msg_ptr;
+
+    tptr=pptr;
+    cfm_common_header = (const struct cfm_common_header_t *)pptr;
+    TCHECK(*cfm_common_header);
+
+    /*
+     * Sanity checking of the header.
+     */
+    if (CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version) != CFM_VERSION) {
+	printf("CFMv%u not supported, length %u",
+               CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version), length);
+	return;
+    }
+
+    printf("CFMv%u %s, MD Level %u, length %u",
+           CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version),
+           tok2str(cfm_opcode_values, "unknown (%u)", cfm_common_header->opcode),
+           CFM_EXTRACT_MD_LEVEL(cfm_common_header->mdlevel_version),
+           length);
+
+    /*
+     * In non-verbose mode just print the opcode and md-level.
+     */
+    if (vflag < 1) {
+        return;
+    }
+
+    printf("\n\tFirst TLV offset %u", cfm_common_header->first_tlv_offset);
+
+    tptr += sizeof(const struct cfm_common_header_t);
+    tlen = length - sizeof(struct cfm_common_header_t);
+
+    switch (cfm_common_header->opcode) {
+    case CFM_OPCODE_CCM:
+        msg_ptr.cfm_ccm = (const struct cfm_ccm_t *)tptr;
+
+        ccm_interval = CFM_EXTRACT_CCM_INTERVAL(cfm_common_header->flags);
+        printf(", Flags [CCM Interval %u%s]",
+               ccm_interval,
+               cfm_common_header->flags & CFM_CCM_RDI_FLAG ?
+               ", RDI" : "");
+
+        /*
+         * Resolve the CCM interval field.
+         */
+        if (ccm_interval) {
+            printf("\n\t  CCM Interval %.3fs"
+                   ", min CCM Lifetime %.3fs, max CCM Lifetime %.3fs",
+                   ccm_interval_base[ccm_interval],
+                   ccm_interval_base[ccm_interval] * CCM_INTERVAL_MIN_MULTIPLIER,
+                   ccm_interval_base[ccm_interval] * CCM_INTERVAL_MAX_MULTIPLIER);
+        }
+
+        printf("\n\t  Sequence Number 0x%08x, MA-End-Point-ID 0x%04x",
+               EXTRACT_32BITS(msg_ptr.cfm_ccm->sequence),
+               EXTRACT_16BITS(msg_ptr.cfm_ccm->ma_epi));
+
+
+        /*
+         * Resolve the MD fields.
+         */
+        printf("\n\t  MD Name Format %s (%u), MD Name length %u",
+               tok2str(cfm_md_nameformat_values, "Unknown",
+                       msg_ptr.cfm_ccm->md_nameformat),
+               msg_ptr.cfm_ccm->md_nameformat,
+               msg_ptr.cfm_ccm->md_namelength);
+
+        if (msg_ptr.cfm_ccm->md_nameformat != CFM_CCM_MD_FORMAT_NONE) {
+            printf("\n\t  MD Name: ");
+            switch (msg_ptr.cfm_ccm->md_nameformat) {
+            case CFM_CCM_MD_FORMAT_DNS:
+            case CFM_CCM_MD_FORMAT_CHAR:
+                safeputs((const char *)msg_ptr.cfm_ccm->md_name, msg_ptr.cfm_ccm->md_namelength);
+                break;
+
+            case CFM_CCM_MD_FORMAT_MAC:
+                printf("\n\t  MAC %s", etheraddr_string(
+                           msg_ptr.cfm_ccm->md_name));
+                break;
+
+                /* FIXME add printers for those MD formats - hexdump for now */
+            case CFM_CCM_MA_FORMAT_8021:
+            default:
+                print_unknown_data(msg_ptr.cfm_ccm->md_name, "\n\t    ",
+                                   msg_ptr.cfm_ccm->md_namelength);
+            }
+        }
+
+
+        /*
+         * Resolve the MA fields.
+         */
+        ma_nameformat = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength;
+        ma_namelength = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength + 1;
+        ma_name = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength + 2;
+
+        printf("\n\t  MA Name-Format %s (%u), MA name length %u",
+               tok2str(cfm_ma_nameformat_values, "Unknown",
+                       *ma_nameformat),
+               *ma_nameformat,
+               *ma_namelength);        
+
+        printf("\n\t  MA Name: ");
+        switch (*ma_nameformat) {
+        case CFM_CCM_MA_FORMAT_CHAR:
+            safeputs((const char *)ma_name, *ma_namelength);
+            break;
+
+            /* FIXME add printers for those MA formats - hexdump for now */
+        case CFM_CCM_MA_FORMAT_8021:
+        case CFM_CCM_MA_FORMAT_VID:
+        case CFM_CCM_MA_FORMAT_INT:
+        case CFM_CCM_MA_FORMAT_VPN:
+        default:
+            print_unknown_data(ma_name, "\n\t    ", *ma_namelength);
+        }
+        break;
+
+    case CFM_OPCODE_LTM:
+        msg_ptr.cfm_ltm = (const struct cfm_ltm_t *)tptr;
+
+        printf(", Flags [%s]",
+               bittok2str(cfm_ltm_flag_values, "none",  cfm_common_header->flags));
+
+        printf("\n\t  Transaction-ID 0x%08x, Egress-ID %s, ttl %u",
+               EXTRACT_32BITS(msg_ptr.cfm_ltm->transaction_id),
+               cfm_egress_id_string(msg_ptr.cfm_ltm->egress_id),
+               msg_ptr.cfm_ltm->ttl);
+
+        printf("\n\t  Original-MAC %s, Target-MAC %s",
+               etheraddr_string(msg_ptr.cfm_ltm->original_mac),
+               etheraddr_string(msg_ptr.cfm_ltm->target_mac));
+        break;
+
+    case CFM_OPCODE_LTR:
+        msg_ptr.cfm_ltr = (const struct cfm_ltr_t *)tptr;
+
+        printf(", Flags [%s]",
+               bittok2str(cfm_ltr_flag_values, "none",  cfm_common_header->flags));
+
+        printf("\n\t  Transaction-ID 0x%08x, Last-Egress-ID %s",
+               EXTRACT_32BITS(msg_ptr.cfm_ltr->transaction_id),
+               cfm_egress_id_string(msg_ptr.cfm_ltr->last_egress_id));
+
+        printf("\n\t  Next-Egress-ID %s, ttl %u",
+               cfm_egress_id_string(msg_ptr.cfm_ltr->next_egress_id),
+               msg_ptr.cfm_ltr->ttl);
+
+        printf("\n\t  Replay-Action %s (%u)",
+               tok2str(cfm_ltr_replay_action_values,
+                       "Unknown",
+                       msg_ptr.cfm_ltr->replay_action),
+               msg_ptr.cfm_ltr->replay_action);
+        break;
+
+        /*
+         * No message decoder yet.
+         * Hexdump everything up until the start of the TLVs
+         */
+    case CFM_OPCODE_LBR:
+    case CFM_OPCODE_LBM:
+    default:
+        if (tlen > cfm_common_header->first_tlv_offset) {
+            print_unknown_data(tptr, "\n\t  ",
+                               tlen -  cfm_common_header->first_tlv_offset);
+        }
+        break;
+    }
+
+    /*
+     * Sanity check for not walking off.
+     */
+    if (tlen <= cfm_common_header->first_tlv_offset) {
+        return;
+    }
+
+    tptr += cfm_common_header->first_tlv_offset;
+    tlen -= cfm_common_header->first_tlv_offset;
+    
+    while (tlen > 0) {
+        cfm_tlv_header = (const struct cfm_tlv_header_t *)tptr;
+
+        /* Enough to read the tlv type ? */
+        TCHECK2(*tptr, 1);
+        cfm_tlv_type=cfm_tlv_header->type;
+
+        if (cfm_tlv_type != CFM_TLV_END) {
+            /* did we capture enough for fully decoding the object header ? */
+            TCHECK2(*tptr, sizeof(struct cfm_tlv_header_t));            
+            cfm_tlv_len=EXTRACT_16BITS(&cfm_tlv_header->length);
+        } else {
+            cfm_tlv_len = 0;
+        }
+
+        printf("\n\t%s TLV (0x%02x), length %u",
+               tok2str(cfm_tlv_values, "Unknown", cfm_tlv_type),
+               cfm_tlv_type,
+               cfm_tlv_len);
+
+        /* sanity check for not walking off and infinite loop check. */
+        if ((cfm_tlv_type != CFM_TLV_END) &&
+            ((cfm_tlv_len + sizeof(struct cfm_tlv_header_t) > tlen) ||
+             (!cfm_tlv_len))) {
+            print_unknown_data(tptr,"\n\t  ",tlen);
+            return;
+        }
+
+        tptr += sizeof(struct cfm_tlv_header_t);
+        tlen -= sizeof(struct cfm_tlv_header_t);
+        tlv_ptr = tptr;
+
+        /* did we capture enough for fully decoding the object ? */
+        if (cfm_tlv_type != CFM_TLV_END) {
+            TCHECK2(*tptr, cfm_tlv_len);
+        }
+        hexdump = FALSE;
+
+        switch(cfm_tlv_type) {
+        case CFM_TLV_END:
+            /* we are done - bail out */
+            return;
+
+        case CFM_TLV_PORT_STATUS:
+            printf(", Status: %s (%u)",
+                   tok2str(cfm_tlv_port_status_values, "Unknown", *tptr),
+                   *tptr);
+            break;
+
+        case CFM_TLV_INTERFACE_STATUS:
+            printf(", Status: %s (%u)",
+                   tok2str(cfm_tlv_interface_status_values, "Unknown", *tptr),
+                   *tptr);
+            break;
+
+        case CFM_TLV_PRIVATE:
+            printf(", Vendor: %s (%u), Sub-Type %u",
+                   tok2str(oui_values,"Unknown", EXTRACT_24BITS(tptr)),
+                   EXTRACT_24BITS(tptr),
+                   *(tptr+3));
+            hexdump = TRUE;
+            break;
+
+        case CFM_TLV_SENDER_ID:
+        {
+            u_int chassis_id_type, chassis_id_length;
+            u_int mgmt_addr_length;
+
+            /*
+             * Check if there is a Chassis-ID.
+             */
+            chassis_id_length = *tptr;
+            if (chassis_id_length > tlen) {
+                hexdump = TRUE;
+                break;
+            }
+
+            tptr++;
+            tlen--;
+
+            if (chassis_id_length) {
+                chassis_id_type = *tptr;
+                printf("\n\t  Chassis-ID Type %s (%u), Chassis-ID length %u",
+                       tok2str(cfm_tlv_senderid_chassisid_values,
+                               "Unknown",
+                               chassis_id_type),
+                       chassis_id_type,
+                       chassis_id_length);
+
+                switch (chassis_id_type) {
+                case CFM_CHASSIS_ID_MAC_ADDRESS:
+                    printf("\n\t  MAC %s", etheraddr_string(tptr+1));
+                    break;
+
+                case CFM_CHASSIS_ID_NETWORK_ADDRESS:
+                    hexdump |= cfm_mgmt_addr_print(tptr);
+                    break;
+
+                case CFM_CHASSIS_ID_INTERFACE_NAME: /* fall through */
+                case CFM_CHASSIS_ID_INTERFACE_ALIAS:
+                case CFM_CHASSIS_ID_LOCAL:
+                case CFM_CHASSIS_ID_CHASSIS_COMPONENT:
+                case CFM_CHASSIS_ID_PORT_COMPONENT:
+                    safeputs((const char *)tptr+1, chassis_id_length);
+                    break;
+
+                default:
+                    hexdump = TRUE;
+                    break;
+                }
+            }
+
+            tptr += chassis_id_length;
+            tlen -= chassis_id_length;
+
+            /*
+             * Check if there is a Management Address.
+             */
+            mgmt_addr_length = *tptr;
+            if (mgmt_addr_length > tlen) {
+                hexdump = TRUE;
+                break;
+            }
+
+            tptr++;
+            tlen--;
+
+            if (mgmt_addr_length) {
+                hexdump |= cfm_mgmt_addr_print(tptr);
+            }
+
+            tptr += mgmt_addr_length;
+            tlen -= mgmt_addr_length;
+
+        }
+        break;
+
+            /*
+             * FIXME those are the defined TLVs that lack a decoder
+             * you are welcome to contribute code ;-)
+             */
+
+        case CFM_TLV_DATA:
+        case CFM_TLV_REPLY_INGRESS:
+        case CFM_TLV_REPLY_EGRESS:
+        default:
+            hexdump = TRUE;
+            break;
+        }
+        /* do we want to see an additional hexdump ? */
+        if (hexdump || vflag > 1)
+            print_unknown_data(tlv_ptr, "\n\t  ", cfm_tlv_len);
+
+        tptr+=cfm_tlv_len;
+        tlen-=cfm_tlv_len;
+    }
+    return;
+trunc:
+    printf("\n\t\t packet exceeded snapshot");
+}