| /* |
| * 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"); |
| } |
