Home | History | Annotate | Download | only in tcpdump
      1 /*
      2  * Redistribution and use in source and binary forms, with or without
      3  * modification, are permitted provided that: (1) source code
      4  * distributions retain the above copyright notice and this paragraph
      5  * in its entirety, and (2) distributions including binary code include
      6  * the above copyright notice and this paragraph in its entirety in
      7  * the documentation or other materials provided with the distribution.
      8  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
      9  * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
     10  * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     11  * FOR A PARTICULAR PURPOSE.
     12  *
     13  * Original code by Hannes Gredler (hannes (at) juniper.net)
     14  */
     15 
     16 #define NETDISSECT_REWORKED
     17 #ifdef HAVE_CONFIG_H
     18 #include "config.h"
     19 #endif
     20 
     21 #include <tcpdump-stdinc.h>
     22 
     23 #include "interface.h"
     24 #include "extract.h"
     25 #include "addrtoname.h"
     26 
     27 #include "l2vpn.h"
     28 #include "oui.h"
     29 
     30 /*
     31  * LSPPING common header
     32  *
     33  *  0                   1                   2                   3
     34  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
     35  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     36  * |         Version Number        |         Must Be Zero          |
     37  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     38  * |  Message Type |   Reply mode  |  Return Code  | Return Subcode|
     39  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     40  * |                        Sender's Handle                        |
     41  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     42  * |                        Sequence Number                        |
     43  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     44  * |                    TimeStamp Sent (seconds)                   |
     45  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     46  * |                  TimeStamp Sent (microseconds)                |
     47  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     48  * |                  TimeStamp Received (seconds)                 |
     49  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     50  * |                TimeStamp Received (microseconds)              |
     51  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     52  * |                            TLVs ...                           |
     53  * .                                                               .
     54  * .                                                               .
     55  * .                                                               .
     56  */
     57 
     58 struct lspping_common_header {
     59     uint8_t version[2];
     60     uint8_t reserved[2];
     61     uint8_t msg_type;
     62     uint8_t reply_mode;
     63     uint8_t return_code;
     64     uint8_t return_subcode;
     65     uint8_t sender_handle[4];
     66     uint8_t seq_number[4];
     67     uint8_t ts_sent_sec[4];
     68     uint8_t ts_sent_usec[4];
     69     uint8_t ts_rcvd_sec[4];
     70     uint8_t ts_rcvd_usec[4];
     71 };
     72 
     73 #define LSPPING_VERSION            1
     74 
     75 static const struct tok lspping_msg_type_values[] = {
     76     { 1, "MPLS Echo Request"},
     77     { 2, "MPLS Echo Reply"},
     78     { 0, NULL}
     79 };
     80 
     81 static const struct tok lspping_reply_mode_values[] = {
     82     { 1, "Do not reply"},
     83     { 2, "Reply via an IPv4/IPv6 UDP packet"},
     84     { 3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"},
     85     { 4, "Reply via application level control channel"},
     86     { 0, NULL}
     87 };
     88 
     89 static const struct tok lspping_return_code_values[] = {
     90     {  0, "No return code or return code contained in the Error Code TLV"},
     91     {  1, "Malformed echo request received"},
     92     {  2, "One or more of the TLVs was not understood"},
     93     {  3, "Replying router is an egress for the FEC at stack depth"},
     94     {  4, "Replying router has no mapping for the FEC at stack depth"},
     95     {  5, "Reserved"},
     96     {  6, "Reserved"},
     97     {  7, "Reserved"},
     98     {  8, "Label switched at stack-depth"},
     99     {  9, "Label switched but no MPLS forwarding at stack-depth"},
    100     { 10, "Mapping for this FEC is not the given label at stack depth"},
    101     { 11, "No label entry at stack-depth"},
    102     { 12, "Protocol not associated with interface at FEC stack depth"},
    103 };
    104 
    105 
    106 /*
    107  * LSPPING TLV header
    108  *  0                   1                   2                   3
    109  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    110  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    111  * |             Type              |            Length             |
    112  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    113  * |                             Value                             |
    114  * .                                                               .
    115  * .                                                               .
    116  * .                                                               .
    117  * |                                                               |
    118  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    119  */
    120 
    121 struct lspping_tlv_header {
    122     uint8_t type[2];
    123     uint8_t length[2];
    124 };
    125 
    126 #define	LSPPING_TLV_TARGET_FEC_STACK      1
    127 #define	LSPPING_TLV_DOWNSTREAM_MAPPING    2
    128 #define	LSPPING_TLV_PAD                   3
    129 #define LSPPING_TLV_VENDOR_ENTERPRISE     5
    130 #define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4
    131 #define LSPPING_TLV_INTERFACE_LABEL_STACK 7
    132 #define	LSPPING_TLV_ERROR_CODE            9
    133 #define LSPPING_TLV_REPLY_TOS_BYTE        10
    134 #define	LSPPING_TLV_BFD_DISCRIMINATOR     15 /* draft-ietf-bfd-mpls-02 */
    135 #define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4
    136 #define	LSPPING_TLV_VENDOR_PRIVATE        0xfc00
    137 
    138 static const struct tok lspping_tlv_values[] = {
    139     { LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" },
    140     { LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" },
    141     { LSPPING_TLV_PAD, "Pad" },
    142     { LSPPING_TLV_ERROR_CODE, "Error Code" },
    143     { LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" },
    144     { LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" },
    145     { LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" },
    146     { LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" },
    147     { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" },
    148     { 0, NULL}
    149 };
    150 
    151 #define	LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4      1
    152 #define	LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6      2
    153 #define	LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4     3
    154 #define	LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6     4
    155 #define	LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4    6
    156 #define	LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6    7
    157 #define	LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT   8
    158 #define	LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID_OLD 9
    159 #define	LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID   10
    160 #define	LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4     11
    161 #define	LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6     12
    162 
    163 static const struct tok lspping_tlvtargetfec_subtlv_values[] = {
    164     { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"},
    165     { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6, "LDP IPv6 prefix"},
    166     { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4, "RSVP IPv4 Session Query"},
    167     { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6, "RSVP IPv6 Session Query"},
    168     { 5, "Reserved"},
    169     { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"},
    170     { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"},
    171     { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"},
    172     { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID_OLD, "L2 circuit ID (old)"},
    173     { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID, "L2 circuit ID"},
    174     { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"},
    175     { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"},
    176     { 0, NULL}
    177 };
    178 
    179 /*
    180  *  0                   1                   2                   3
    181  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    182  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    183  * |                          IPv4 prefix                          |
    184  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    185  * | Prefix Length |         Must Be Zero                          |
    186  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    187  */
    188 struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t {
    189     uint8_t prefix [4];
    190     uint8_t prefix_len;
    191 };
    192 
    193 /*
    194  *  0                   1                   2                   3
    195  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    196  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    197  * |                          IPv6 prefix                          |
    198  * |                          (16 octets)                          |
    199  * |                                                               |
    200  * |                                                               |
    201  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    202  * | Prefix Length |         Must Be Zero                          |
    203  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    204  */
    205 struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t {
    206     uint8_t prefix [16];
    207     uint8_t prefix_len;
    208 };
    209 
    210 /*
    211  * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    212  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    213  * |                    Sender identifier                          |
    214  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    215  * |                         IPv4 prefix                           |
    216  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    217  * | Prefix Length |                 Must Be Zero                  |
    218  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    219  */
    220 struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t {
    221     uint8_t sender_id [4];
    222     uint8_t prefix [4];
    223     uint8_t prefix_len;
    224 };
    225 
    226 /*
    227  * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    228  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    229  * |                    Sender identifier                          |
    230  * |                          (16 octets)                          |
    231  * |                                                               |
    232  * |                                                               |
    233  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    234  * |                          IPv6 prefix                          |
    235  * |                          (16 octets)                          |
    236  * |                                                               |
    237  * |                                                               |
    238  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    239  * | Prefix Length |                 Must Be Zero                  |
    240  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    241  */
    242 struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t {
    243     uint8_t sender_id [16];
    244     uint8_t prefix [16];
    245     uint8_t prefix_len;
    246 };
    247 
    248 /*
    249  *  0                   1                   2                   3
    250  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    251  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    252  * |                 IPv4 tunnel end point address                 |
    253  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    254  * |          Must Be Zero         |     Tunnel ID                 |
    255  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    256  * |                       Extended Tunnel ID                      |
    257  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    258  * |                   IPv4 tunnel sender address                  |
    259  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    260  * |          Must Be Zero         |            LSP ID             |
    261  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    262  */
    263 struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t {
    264     uint8_t tunnel_endpoint [4];
    265     uint8_t res[2];
    266     uint8_t tunnel_id[2];
    267     uint8_t extended_tunnel_id[4];
    268     uint8_t tunnel_sender [4];
    269     uint8_t res2[2];
    270     uint8_t lsp_id [2];
    271 };
    272 
    273 /*
    274  *  0                   1                   2                   3
    275  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    276  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    277  * |                 IPv6 tunnel end point address                 |
    278  * |                                                               |
    279  * |                                                               |
    280  * |                                                               |
    281  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    282  * |          Must Be Zero         |          Tunnel ID            |
    283  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    284  * |                       Extended Tunnel ID                      |
    285  * |                                                               |
    286  * |                                                               |
    287  * |                                                               |
    288  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    289  * |                   IPv6 tunnel sender address                  |
    290  * |                                                               |
    291  * |                                                               |
    292  * |                                                               |
    293  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    294  * |          Must Be Zero         |            LSP ID             |
    295  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    296  */
    297 struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t {
    298     uint8_t tunnel_endpoint [16];
    299     uint8_t res[2];
    300     uint8_t tunnel_id[2];
    301     uint8_t extended_tunnel_id[16];
    302     uint8_t tunnel_sender [16];
    303     uint8_t res2[2];
    304     uint8_t lsp_id [2];
    305 };
    306 
    307 /*
    308  *  0                   1                   2                   3
    309  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    310  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    311  * |                      Route Distinguisher                      |
    312  * |                          (8 octets)                           |
    313  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    314  * |                         IPv4 prefix                           |
    315  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    316  * | Prefix Length |                 Must Be Zero                  |
    317  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    318  */
    319 struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t {
    320     uint8_t rd [8];
    321     uint8_t prefix [4];
    322     uint8_t prefix_len;
    323 };
    324 
    325 /*
    326  *  0                   1                   2                   3
    327  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    328  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    329  * |                      Route Distinguisher                      |
    330  * |                          (8 octets)                           |
    331  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    332  * |                          IPv6 prefix                          |
    333  * |                          (16 octets)                          |
    334  * |                                                               |
    335  * |                                                               |
    336  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    337  * | Prefix Length |                 Must Be Zero                  |
    338  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    339  */
    340 struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t {
    341     uint8_t rd [8];
    342     uint8_t prefix [16];
    343     uint8_t prefix_len;
    344 };
    345 
    346 /*
    347  *  0                   1                   2                   3
    348  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    349  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    350  * |                      Route Distinguisher                      |
    351  * |                          (8 octets)                           |
    352  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    353  * |         Sender's CE ID        |       Receiver's CE ID        |
    354  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    355  * |      Encapsulation Type       |         Must Be Zero          |
    356  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    357  *  0                   1                   2                   3
    358  */
    359 struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t {
    360     uint8_t rd [8];
    361     uint8_t sender_ce_id [2];
    362     uint8_t receiver_ce_id [2];
    363     uint8_t encapsulation[2];
    364 };
    365 
    366 /*
    367  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    368  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    369  * |                      Remote PE Address                        |
    370  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    371  * |                             VC ID                             |
    372  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    373  * |      Encapsulation Type       |         Must Be Zero          |
    374  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    375  */
    376 struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_old_t {
    377     uint8_t remote_pe_address [4];
    378     uint8_t vc_id [4];
    379     uint8_t encapsulation[2];
    380 };
    381 
    382 /*
    383  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    384  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    385  * |                     Sender's PE Address                       |
    386  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    387  * |                      Remote PE Address                        |
    388  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    389  * |                             VC ID                             |
    390  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    391  * |      Encapsulation Type       |         Must Be Zero          |
    392  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    393  */
    394 struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_t {
    395     uint8_t sender_pe_address [4];
    396     uint8_t remote_pe_address [4];
    397     uint8_t vc_id [4];
    398     uint8_t encapsulation[2];
    399 };
    400 
    401 /*
    402  *  0                   1                   2                   3
    403  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    404  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    405  * |               MTU             | Address Type  |  Resvd (SBZ)  |
    406  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    407  * |             Downstream IP Address (4 or 16 octets)            |
    408  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    409  * |         Downstream Interface Address (4 or 16 octets)         |
    410  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    411  * | Hash Key Type | Depth Limit   |        Multipath Length       |
    412  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    413  * .                                                               .
    414  * .                     (Multipath Information)                   .
    415  * .                                                               .
    416  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    417  * |               Downstream Label                |    Protocol   |
    418  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    419  * .                                                               .
    420  * .                                                               .
    421  * .                                                               .
    422  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    423  * |               Downstream Label                |    Protocol   |
    424  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    425  */
    426 struct lspping_tlv_downstream_map_ipv4_t {
    427     uint8_t mtu [2];
    428     uint8_t address_type;
    429     uint8_t res;
    430     uint8_t downstream_ip[4];
    431     uint8_t downstream_interface[4];
    432 };
    433 
    434 struct lspping_tlv_downstream_map_ipv6_t {
    435     uint8_t mtu [2];
    436     uint8_t address_type;
    437     uint8_t res;
    438     uint8_t downstream_ip[16];
    439     uint8_t downstream_interface[16];
    440 };
    441 
    442 struct lspping_tlv_downstream_map_info_t {
    443     uint8_t hash_key_type;
    444     uint8_t depth_limit;
    445     uint8_t multipath_length [2];
    446 };
    447 
    448 #define LSPPING_AFI_IPV4 1
    449 #define LSPPING_AFI_UNMB 2
    450 #define LSPPING_AFI_IPV6 3
    451 
    452 static const struct tok lspping_tlv_downstream_addr_values[] = {
    453     { LSPPING_AFI_IPV4, "IPv4"},
    454     { LSPPING_AFI_IPV6, "IPv6"},
    455     { LSPPING_AFI_UNMB, "Unnumbered"},
    456     { 0, NULL}
    457 };
    458 
    459 void
    460 lspping_print(netdissect_options *ndo,
    461               register const u_char *pptr, register u_int len)
    462 {
    463     const struct lspping_common_header *lspping_com_header;
    464     const struct lspping_tlv_header *lspping_tlv_header;
    465     const struct lspping_tlv_header *lspping_subtlv_header;
    466     const u_char *tptr,*tlv_tptr,*subtlv_tptr;
    467     int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen;
    468     int tlv_hexdump,subtlv_hexdump;
    469     int lspping_subtlv_len,lspping_subtlv_type;
    470     struct timeval timestamp;
    471 
    472     union {
    473         const struct lspping_tlv_downstream_map_ipv4_t *lspping_tlv_downstream_map_ipv4;
    474         const struct lspping_tlv_downstream_map_ipv6_t *lspping_tlv_downstream_map_ipv6;
    475         const struct lspping_tlv_downstream_map_info_t  *lspping_tlv_downstream_map_info;
    476     } tlv_ptr;
    477 
    478     union {
    479         const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *lspping_tlv_targetfec_subtlv_ldp_ipv4;
    480         const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *lspping_tlv_targetfec_subtlv_ldp_ipv6;
    481         const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *lspping_tlv_targetfec_subtlv_rsvp_ipv4;
    482         const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *lspping_tlv_targetfec_subtlv_rsvp_ipv6;
    483         const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv4;
    484         const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv6;
    485         const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *lspping_tlv_targetfec_subtlv_l2vpn_endpt;
    486         const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_old_t *lspping_tlv_targetfec_subtlv_l2vpn_vcid_old;
    487         const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_t *lspping_tlv_targetfec_subtlv_l2vpn_vcid;
    488         const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *lspping_tlv_targetfec_subtlv_bgp_ipv4;
    489         const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *lspping_tlv_targetfec_subtlv_bgp_ipv6;
    490     } subtlv_ptr;
    491 
    492     tptr=pptr;
    493     lspping_com_header = (const struct lspping_common_header *)pptr;
    494     ND_TCHECK(*lspping_com_header);
    495 
    496     /*
    497      * Sanity checking of the header.
    498      */
    499     if (EXTRACT_16BITS(&lspping_com_header->version[0]) != LSPPING_VERSION) {
    500 	ND_PRINT((ndo, "LSP-PING version %u packet not supported",
    501                EXTRACT_16BITS(&lspping_com_header->version[0])));
    502 	return;
    503     }
    504 
    505     /* in non-verbose mode just lets print the basic Message Type*/
    506     if (ndo->ndo_vflag < 1) {
    507         ND_PRINT((ndo, "LSP-PINGv%u, %s, seq %u, length: %u",
    508                EXTRACT_16BITS(&lspping_com_header->version[0]),
    509                tok2str(lspping_msg_type_values, "unknown (%u)",lspping_com_header->msg_type),
    510                EXTRACT_32BITS(lspping_com_header->seq_number),
    511                len));
    512         return;
    513     }
    514 
    515     /* ok they seem to want to know everything - lets fully decode it */
    516 
    517     tlen=len;
    518 
    519     ND_PRINT((ndo, "\n\tLSP-PINGv%u, msg-type: %s (%u), length: %u\n\t  reply-mode: %s (%u)",
    520            EXTRACT_16BITS(&lspping_com_header->version[0]),
    521            tok2str(lspping_msg_type_values, "unknown",lspping_com_header->msg_type),
    522            lspping_com_header->msg_type,
    523            len,
    524            tok2str(lspping_reply_mode_values, "unknown",lspping_com_header->reply_mode),
    525            lspping_com_header->reply_mode));
    526 
    527     /*
    528      *  the following return codes require that the subcode is attached
    529      *  at the end of the translated token output
    530      */
    531     if (lspping_com_header->return_code == 3 ||
    532         lspping_com_header->return_code == 4 ||
    533         lspping_com_header->return_code == 8 ||
    534         lspping_com_header->return_code == 10 ||
    535         lspping_com_header->return_code == 11 ||
    536         lspping_com_header->return_code == 12 )
    537         ND_PRINT((ndo, "\n\t  Return Code: %s %u (%u)\n\t  Return Subcode: (%u)",
    538                tok2str(lspping_return_code_values, "unknown",lspping_com_header->return_code),
    539                lspping_com_header->return_subcode,
    540                lspping_com_header->return_code,
    541                lspping_com_header->return_subcode));
    542     else
    543         ND_PRINT((ndo, "\n\t  Return Code: %s (%u)\n\t  Return Subcode: (%u)",
    544                tok2str(lspping_return_code_values, "unknown",lspping_com_header->return_code),
    545                lspping_com_header->return_code,
    546                lspping_com_header->return_subcode));
    547 
    548     ND_PRINT((ndo, "\n\t  Sender Handle: 0x%08x, Sequence: %u",
    549            EXTRACT_32BITS(lspping_com_header->sender_handle),
    550            EXTRACT_32BITS(lspping_com_header->seq_number)));
    551 
    552     timestamp.tv_sec=EXTRACT_32BITS(lspping_com_header->ts_sent_sec);
    553     timestamp.tv_usec=EXTRACT_32BITS(lspping_com_header->ts_sent_usec);
    554     ND_PRINT((ndo, "\n\t  Sender Timestamp: "));
    555     ts_print(ndo, &timestamp);
    556 
    557     timestamp.tv_sec=EXTRACT_32BITS(lspping_com_header->ts_rcvd_sec);
    558     timestamp.tv_usec=EXTRACT_32BITS(lspping_com_header->ts_rcvd_usec);
    559     ND_PRINT((ndo, "Receiver Timestamp: "));
    560     if ((timestamp.tv_sec != 0) && (timestamp.tv_usec != 0))
    561         ts_print(ndo, &timestamp);
    562     else
    563         ND_PRINT((ndo, "no timestamp"));
    564 
    565     tptr+=sizeof(const struct lspping_common_header);
    566     tlen-=sizeof(const struct lspping_common_header);
    567 
    568     while(tlen>(int)sizeof(struct lspping_tlv_header)) {
    569 
    570         /* did we capture enough for fully decoding the tlv header ? */
    571         ND_TCHECK2(*tptr, sizeof(struct lspping_tlv_header));
    572 
    573         lspping_tlv_header = (const struct lspping_tlv_header *)tptr;
    574         lspping_tlv_type=EXTRACT_16BITS(lspping_tlv_header->type);
    575         lspping_tlv_len=EXTRACT_16BITS(lspping_tlv_header->length);
    576 
    577         /* some little sanity checking */
    578         if (lspping_tlv_type == 0 || lspping_tlv_len == 0)
    579             return;
    580 
    581         if(lspping_tlv_len < 4) {
    582             ND_PRINT((ndo, "\n\t  ERROR: TLV %u bogus size %u",lspping_tlv_type,lspping_tlv_len));
    583             return;
    584         }
    585 
    586         ND_PRINT((ndo, "\n\t  %s TLV (%u), length: %u",
    587                tok2str(lspping_tlv_values,
    588                        "Unknown",
    589                        lspping_tlv_type),
    590                lspping_tlv_type,
    591                lspping_tlv_len));
    592 
    593         tlv_tptr=tptr+sizeof(struct lspping_tlv_header);
    594         tlv_tlen=lspping_tlv_len; /* header not included -> no adjustment */
    595 
    596         /* did we capture enough for fully decoding the tlv ? */
    597         ND_TCHECK2(*tptr, lspping_tlv_len);
    598         tlv_hexdump=FALSE;
    599 
    600         switch(lspping_tlv_type) {
    601         case LSPPING_TLV_TARGET_FEC_STACK:
    602             while(tlv_tlen>(int)sizeof(struct lspping_tlv_header)) {
    603 
    604                 /* did we capture enough for fully decoding the subtlv header ? */
    605                 ND_TCHECK2(*tptr, sizeof(struct lspping_tlv_header));
    606                 subtlv_hexdump=FALSE;
    607 
    608                 lspping_subtlv_header = (const struct lspping_tlv_header *)tlv_tptr;
    609                 lspping_subtlv_type=EXTRACT_16BITS(lspping_subtlv_header->type);
    610                 lspping_subtlv_len=EXTRACT_16BITS(lspping_subtlv_header->length);
    611                 subtlv_tptr=tlv_tptr+sizeof(struct lspping_tlv_header);
    612 
    613                 if (lspping_subtlv_len == 0)
    614                     break;
    615 
    616                 ND_PRINT((ndo, "\n\t    %s subTLV (%u), length: %u",
    617                        tok2str(lspping_tlvtargetfec_subtlv_values,
    618                                "Unknown",
    619                                lspping_subtlv_type),
    620                        lspping_subtlv_type,
    621                        lspping_subtlv_len));
    622 
    623                 switch(lspping_subtlv_type) {
    624 
    625                 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4:
    626                     subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 = \
    627                         (const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr;
    628                     ND_PRINT((ndo, "\n\t      %s/%u",
    629                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix),
    630                            subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len));
    631                     break;
    632 
    633 #ifdef INET6
    634                 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6:
    635                     subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 = \
    636                         (const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr;
    637                     ND_PRINT((ndo, "\n\t      %s/%u",
    638                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix),
    639                            subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len));
    640                     break;
    641 #endif
    642 
    643                 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4:
    644                     subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 = \
    645                         (const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr;
    646                     ND_PRINT((ndo, "\n\t      %s/%u, sender-id %s",
    647                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix),
    648                            subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len,
    649                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->sender_id)));
    650                     break;
    651 
    652 #ifdef INET6
    653                 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6:
    654                     subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 = \
    655                         (const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr;
    656                     ND_PRINT((ndo, "\n\t      %s/%u, sender-id %s",
    657                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix),
    658                            subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len,
    659                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->sender_id)));
    660                     break;
    661 #endif
    662 
    663                 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4:
    664                     subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 = \
    665                         (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr;
    666                     ND_PRINT((ndo, "\n\t      tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" \
    667                            "\n\t      tunnel-id 0x%04x, extended tunnel-id %s",
    668                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint),
    669                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender),
    670                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id),
    671                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id),
    672                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id)));
    673                     break;
    674 
    675 #ifdef INET6
    676                 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6:
    677                     subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 = \
    678                         (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr;
    679                     ND_PRINT((ndo, "\n\t      tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" \
    680                            "\n\t      tunnel-id 0x%04x, extended tunnel-id %s",
    681                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint),
    682                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender),
    683                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id),
    684                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id),
    685                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id)));
    686                     break;
    687 #endif
    688 
    689                 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4:
    690                     subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 = \
    691                         (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr;
    692                     ND_PRINT((ndo, "\n\t      RD: %s, %s/%u",
    693                            bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd),
    694                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix),
    695                            subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len));
    696                     break;
    697 
    698 #ifdef INET6
    699                 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6:
    700                     subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 = \
    701                         (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr;
    702                     ND_PRINT((ndo, "\n\t      RD: %s, %s/%u",
    703                            bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd),
    704                            ip6addr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix),
    705                            subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len));
    706                     break;
    707 #endif
    708 
    709                 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT:
    710                     subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt = \
    711                         (const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *)subtlv_tptr;
    712                     ND_PRINT((ndo, "\n\t      RD: %s, Sender CE-ID: %u, Receiver CE-ID: %u" \
    713                            "\n\t      Encapsulation Type: %s (%u)",
    714                            bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->rd),
    715                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->sender_ce_id),
    716                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->receiver_ce_id),
    717                            tok2str(l2vpn_encaps_values,
    718                                    "unknown",
    719                                    EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)),
    720                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)));
    721 
    722                     break;
    723 
    724                     /* the old L2VPN VCID subTLV does not have support for the sender field */
    725                 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID_OLD:
    726                     subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old = \
    727                         (const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_old_t *)subtlv_tptr;
    728                     ND_PRINT((ndo, "\n\t      Remote PE: %s" \
    729                            "\n\t      VC-ID: 0x%08x, Encapsulation Type: %s (%u)",
    730                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->remote_pe_address),
    731                            EXTRACT_32BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->vc_id),
    732                            tok2str(l2vpn_encaps_values,
    733                                    "unknown",
    734                                    EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->encapsulation)),
    735                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->encapsulation)));
    736 
    737                     break;
    738 
    739                 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_VCID:
    740                     subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid = \
    741                         (const struct lspping_tlv_targetfec_subtlv_l2vpn_vcid_t *)subtlv_tptr;
    742                     ND_PRINT((ndo, "\n\t      Sender PE: %s, Remote PE: %s" \
    743                            "\n\t      VC-ID: 0x%08x, Encapsulation Type: %s (%u)",
    744                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->sender_pe_address),
    745                            ipaddr_string(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->remote_pe_address),
    746                            EXTRACT_32BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->vc_id),
    747                            tok2str(l2vpn_encaps_values,
    748                                    "unknown",
    749                                    EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->encapsulation)),
    750                            EXTRACT_16BITS(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->encapsulation)));
    751 
    752                     break;
    753 
    754                 default:
    755                     subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */
    756                     break;
    757                 }
    758                 /* do we want to see an additionally subtlv hexdump ? */
    759                 if (ndo->ndo_vflag > 1 || subtlv_hexdump==TRUE)
    760                     print_unknown_data(ndo, tlv_tptr+sizeof(struct lspping_tlv_header), \
    761                                        "\n\t      ",
    762                                        lspping_subtlv_len);
    763 
    764                 tlv_tptr+=lspping_subtlv_len;
    765                 tlv_tlen-=lspping_subtlv_len+sizeof(struct lspping_tlv_header);
    766             }
    767             break;
    768 
    769         case LSPPING_TLV_DOWNSTREAM_MAPPING:
    770             /* that strange thing with the downstream map TLV is that until now
    771              * we do not know if its IPv4 or IPv6 , after we found the address-type
    772              * lets recast the tlv_tptr and move on */
    773 
    774             tlv_ptr.lspping_tlv_downstream_map_ipv4= \
    775                 (const struct lspping_tlv_downstream_map_ipv4_t *)tlv_tptr;
    776             tlv_ptr.lspping_tlv_downstream_map_ipv6= \
    777                 (const struct lspping_tlv_downstream_map_ipv6_t *)tlv_tptr;
    778             ND_PRINT((ndo, "\n\t    MTU: %u, Address-Type: %s (%u)",
    779                    EXTRACT_16BITS(tlv_ptr.lspping_tlv_downstream_map_ipv4->mtu),
    780                    tok2str(lspping_tlv_downstream_addr_values,
    781                            "unknown",
    782                            tlv_ptr.lspping_tlv_downstream_map_ipv4->address_type),
    783                    tlv_ptr.lspping_tlv_downstream_map_ipv4->address_type));
    784 
    785             switch(tlv_ptr.lspping_tlv_downstream_map_ipv4->address_type) {
    786 
    787             case LSPPING_AFI_IPV4:
    788                 ND_PRINT((ndo, "\n\t    Downstream IP: %s" \
    789                        "\n\t    Downstream Interface IP: %s",
    790                        ipaddr_string(ndo, tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip),
    791                        ipaddr_string(ndo, tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface)));
    792                 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
    793                 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
    794                 break;
    795 #ifdef INET6
    796              case LSPPING_AFI_IPV6:
    797                 ND_PRINT((ndo, "\n\t    Downstream IP: %s" \
    798                        "\n\t    Downstream Interface IP: %s",
    799                        ip6addr_string(ndo, tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_ip),
    800                        ip6addr_string(ndo, tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_interface)));
    801                 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
    802                 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_t);
    803                 break;
    804 #endif
    805             case LSPPING_AFI_UNMB:
    806                 ND_PRINT((ndo, "\n\t    Downstream IP: %s" \
    807                        "\n\t    Downstream Interface Index: 0x%08x",
    808                        ipaddr_string(ndo, tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip),
    809                        EXTRACT_32BITS(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface)));
    810                 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
    811                 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t);
    812                 break;
    813 
    814             default:
    815                 /* should not happen ! - no error message - tok2str() has barked already */
    816                 break;
    817             }
    818 
    819             tlv_ptr.lspping_tlv_downstream_map_info= \
    820                 (const struct lspping_tlv_downstream_map_info_t *)tlv_tptr;
    821 
    822             /* FIXME add hash-key type, depth limit, multipath processing */
    823 
    824 
    825             tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_info_t);
    826             tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_info_t);
    827 
    828             /* FIXME print downstream labels */
    829 
    830 
    831             tlv_hexdump=TRUE; /* dump the TLV until code complete */
    832 
    833             break;
    834 
    835         case LSPPING_TLV_BFD_DISCRIMINATOR:
    836             tptr += sizeof(struct lspping_tlv_header);
    837             ND_TCHECK2(*tptr, LSPPING_TLV_BFD_DISCRIMINATOR_LEN);
    838             ND_PRINT((ndo, "\n\t    BFD Discriminator 0x%08x", EXTRACT_32BITS(tptr)));
    839             break;
    840 
    841         case  LSPPING_TLV_VENDOR_ENTERPRISE:
    842         {
    843             uint32_t vendor_id;
    844 
    845             ND_TCHECK2(*tptr, LSPPING_TLV_VENDOR_ENTERPRISE_LEN);
    846             vendor_id = EXTRACT_32BITS(tlv_tptr);
    847             ND_PRINT((ndo, "\n\t    Vendor: %s (0x%04x)",
    848                    tok2str(smi_values, "Unknown", vendor_id),
    849                    vendor_id));
    850         }
    851             break;
    852 
    853             /*
    854              *  FIXME those are the defined TLVs that lack a decoder
    855              *  you are welcome to contribute code ;-)
    856              */
    857         case LSPPING_TLV_PAD:
    858         case LSPPING_TLV_ERROR_CODE:
    859         case LSPPING_TLV_VENDOR_PRIVATE:
    860 
    861         default:
    862             if (ndo->ndo_vflag <= 1)
    863                 print_unknown_data(ndo, tlv_tptr, "\n\t    ", tlv_tlen);
    864             break;
    865         }
    866         /* do we want to see an additionally tlv hexdump ? */
    867         if (ndo->ndo_vflag > 1 || tlv_hexdump==TRUE)
    868             print_unknown_data(ndo, tptr+sizeof(struct lspping_tlv_header), "\n\t    ",
    869                                lspping_tlv_len);
    870 
    871 
    872         /* All TLVs are aligned to four octet boundary */
    873         if (lspping_tlv_len % 4) {
    874             lspping_tlv_len += (4 - lspping_tlv_len % 4);
    875         }
    876 
    877         tptr+=lspping_tlv_len+sizeof(struct lspping_tlv_header);
    878         tlen-=lspping_tlv_len+sizeof(struct lspping_tlv_header);
    879     }
    880     return;
    881 trunc:
    882     ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
    883 }
    884 /*
    885  * Local Variables:
    886  * c-style: whitesmith
    887  * c-basic-offset: 8
    888  * End:
    889  */
    890