print-lspping.c revision 1.10.2.1
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) gredler.at) 14 */ 15 16 #include <sys/cdefs.h> 17 #ifndef lint 18 __RCSID("$NetBSD: print-lspping.c,v 1.10.2.1 2025/08/02 05:23:24 perseant Exp $"); 19 #endif 20 21 /* \summary: MPLS LSP PING printer */ 22 23 /* specification: RFC 4379 */ 24 25 #include <config.h> 26 27 #include "netdissect-stdinc.h" 28 29 #define ND_LONGJMP_FROM_TCHECK 30 #include "netdissect.h" 31 #include "extract.h" 32 #include "addrtoname.h" 33 #include "ntp.h" 34 35 #include "l2vpn.h" 36 #include "oui.h" 37 38 39 /* 40 * LSPPING common header 41 * 42 * 0 1 2 3 43 * 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 44 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 45 * | Version Number | Must Be Zero | 46 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 47 * | Message Type | Reply mode | Return Code | Return Subcode| 48 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 49 * | Sender's Handle | 50 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 51 * | Sequence Number | 52 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 53 * | TimeStamp Sent (seconds) | 54 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 55 * | TimeStamp Sent (microseconds) | 56 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 57 * | TimeStamp Received (seconds) | 58 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 59 * | TimeStamp Received (microseconds) | 60 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 61 * | TLVs ... | 62 * . . 63 * . . 64 * . . 65 */ 66 67 struct lspping_common_header { 68 nd_uint16_t version; 69 nd_uint16_t global_flags; 70 nd_uint8_t msg_type; 71 nd_uint8_t reply_mode; 72 nd_uint8_t return_code; 73 nd_uint8_t return_subcode; 74 nd_uint32_t sender_handle; 75 nd_uint32_t seq_number; 76 struct l_fixedpt ts_sent; 77 struct l_fixedpt ts_rcvd; 78 }; 79 80 #define LSPPING_VERSION 1 81 82 static const struct tok lspping_msg_type_values[] = { 83 { 1, "MPLS Echo Request"}, 84 { 2, "MPLS Echo Reply"}, 85 { 0, NULL} 86 }; 87 88 static const struct tok lspping_reply_mode_values[] = { 89 { 1, "Do not reply"}, 90 { 2, "Reply via an IPv4/IPv6 UDP packet"}, 91 { 3, "Reply via an IPv4/IPv6 UDP packet with Router Alert"}, 92 { 4, "Reply via application level control channel"}, 93 { 0, NULL} 94 }; 95 96 static const struct tok lspping_return_code_values[] = { 97 { 0, "No return code or return code contained in the Error Code TLV"}, 98 { 1, "Malformed echo request received"}, 99 { 2, "One or more of the TLVs was not understood"}, 100 { 3, "Replying router is an egress for the FEC at stack depth"}, 101 { 4, "Replying router has no mapping for the FEC at stack depth"}, 102 { 5, "Reserved"}, 103 { 6, "Reserved"}, 104 { 7, "Reserved"}, 105 { 8, "Label switched at stack-depth"}, 106 { 9, "Label switched but no MPLS forwarding at stack-depth"}, 107 { 10, "Mapping for this FEC is not the given label at stack depth"}, 108 { 11, "No label entry at stack-depth"}, 109 { 12, "Protocol not associated with interface at FEC stack depth"}, 110 { 13, "Premature termination of ping due to label stack shrinking to a single label"}, 111 { 0, NULL}, 112 }; 113 114 115 /* 116 * LSPPING TLV header 117 * 0 1 2 3 118 * 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 1 119 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 120 * | Type | Length | 121 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 122 * | Value | 123 * . . 124 * . . 125 * . . 126 * | | 127 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 128 */ 129 130 struct lspping_tlv_header { 131 nd_uint16_t type; 132 nd_uint16_t length; 133 }; 134 135 #define LSPPING_TLV_TARGET_FEC_STACK 1 136 #define LSPPING_TLV_DOWNSTREAM_MAPPING 2 137 #define LSPPING_TLV_PAD 3 138 /* not assigned 4 */ 139 #define LSPPING_TLV_VENDOR_ENTERPRISE 5 140 #define LSPPING_TLV_VENDOR_ENTERPRISE_LEN 4 141 /* not assigned 6 */ 142 #define LSPPING_TLV_INTERFACE_LABEL_STACK 7 143 /* not assigned 8 */ 144 #define LSPPING_TLV_ERROR_CODE 9 145 #define LSPPING_TLV_REPLY_TOS_BYTE 10 146 #define LSPPING_TLV_BFD_DISCRIMINATOR 15 /* draft-ietf-bfd-mpls-02 */ 147 #define LSPPING_TLV_BFD_DISCRIMINATOR_LEN 4 148 #define LSPPING_TLV_VENDOR_PRIVATE 0xfc00 149 150 static const struct tok lspping_tlv_values[] = { 151 { LSPPING_TLV_TARGET_FEC_STACK, "Target FEC Stack" }, 152 { LSPPING_TLV_DOWNSTREAM_MAPPING, "Downstream Mapping" }, 153 { LSPPING_TLV_PAD, "Pad" }, 154 { LSPPING_TLV_ERROR_CODE, "Error Code" }, 155 { LSPPING_TLV_VENDOR_ENTERPRISE, "Vendor Enterprise Code" }, 156 { LSPPING_TLV_INTERFACE_LABEL_STACK, "Interface Label Stack" }, 157 { LSPPING_TLV_REPLY_TOS_BYTE, "Reply TOS Byte" }, 158 { LSPPING_TLV_BFD_DISCRIMINATOR, "BFD Discriminator" }, 159 { LSPPING_TLV_VENDOR_PRIVATE, "Vendor Private Code" }, 160 { 0, NULL} 161 }; 162 163 #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4 1 164 #define LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6 2 165 #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4 3 166 #define LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6 4 167 /* not assigned 5 */ 168 #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4 6 169 #define LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6 7 170 #define LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT 8 171 #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD 9 172 #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW 10 173 #define LSPPING_TLV_TARGETFEC_SUBTLV_FEC_129_PW 11 174 #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4 12 175 #define LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6 13 176 #define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV4 14 177 #define LSPPING_TLV_TARGETFEC_SUBTLV_GENERIC_IPV6 15 178 #define LSPPING_TLV_TARGETFEC_SUBTLV_NIL_FEC 16 179 180 static const struct tok lspping_tlvtargetfec_subtlv_values[] = { 181 { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4, "LDP IPv4 prefix"}, 182 { LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6, "LDP IPv6 prefix"}, 183 { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4, "RSVP IPv4 Session Query"}, 184 { LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6, "RSVP IPv6 Session Query"}, 185 { 5, "Reserved"}, 186 { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4, "VPN IPv4 prefix"}, 187 { LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6, "VPN IPv6 prefix"}, 188 { LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT, "L2 VPN endpoint"}, 189 { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD, "FEC 128 pseudowire (old)"}, 190 { LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW, "FEC 128 pseudowire"}, 191 { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4, "BGP labeled IPv4 prefix"}, 192 { LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6, "BGP labeled IPv6 prefix"}, 193 { 0, NULL} 194 }; 195 196 /* 197 * 0 1 2 3 198 * 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 1 199 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 200 * | IPv4 prefix | 201 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 202 * | Prefix Length | Must Be Zero | 203 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 204 */ 205 struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t { 206 nd_ipv4 prefix; 207 nd_uint8_t prefix_len; 208 }; 209 210 /* 211 * 0 1 2 3 212 * 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 1 213 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 214 * | IPv6 prefix | 215 * | (16 octets) | 216 * | | 217 * | | 218 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 219 * | Prefix Length | Must Be Zero | 220 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 221 */ 222 struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t { 223 nd_ipv6 prefix; 224 nd_uint8_t prefix_len; 225 }; 226 227 /* 228 * 0 1 2 3 229 * 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 1 230 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 231 * | IPv4 tunnel end point address | 232 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 233 * | Must Be Zero | Tunnel ID | 234 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 235 * | Extended Tunnel ID | 236 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 237 * | IPv4 tunnel sender address | 238 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 239 * | Must Be Zero | LSP ID | 240 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 241 */ 242 struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t { 243 nd_ipv4 tunnel_endpoint; 244 nd_byte res[2]; 245 nd_uint16_t tunnel_id; 246 nd_ipv4 extended_tunnel_id; 247 nd_ipv4 tunnel_sender; 248 nd_byte res2[2]; 249 nd_uint16_t lsp_id; 250 }; 251 252 /* 253 * 0 1 2 3 254 * 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 1 255 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 256 * | IPv6 tunnel end point address | 257 * | | 258 * | | 259 * | | 260 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 261 * | Must Be Zero | Tunnel ID | 262 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 263 * | Extended Tunnel ID | 264 * | | 265 * | | 266 * | | 267 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 268 * | IPv6 tunnel sender address | 269 * | | 270 * | | 271 * | | 272 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 273 * | Must Be Zero | LSP ID | 274 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 275 */ 276 struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t { 277 nd_ipv6 tunnel_endpoint; 278 nd_byte res[2]; 279 nd_uint16_t tunnel_id; 280 nd_ipv6 extended_tunnel_id; 281 nd_ipv6 tunnel_sender; 282 nd_byte res2[2]; 283 nd_uint16_t lsp_id; 284 }; 285 286 /* 287 * 0 1 2 3 288 * 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 1 289 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 290 * | Route Distinguisher | 291 * | (8 octets) | 292 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 293 * | IPv4 prefix | 294 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 295 * | Prefix Length | Must Be Zero | 296 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 297 */ 298 struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t { 299 nd_byte rd[8]; 300 nd_ipv4 prefix; 301 nd_uint8_t prefix_len; 302 }; 303 304 /* 305 * 0 1 2 3 306 * 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 1 307 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 308 * | Route Distinguisher | 309 * | (8 octets) | 310 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 311 * | IPv6 prefix | 312 * | (16 octets) | 313 * | | 314 * | | 315 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 316 * | Prefix Length | Must Be Zero | 317 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 318 */ 319 struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t { 320 nd_byte rd[8]; 321 nd_ipv6 prefix; 322 nd_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 * | Sender's VE ID | Receiver's VE ID | 333 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 334 * | Encapsulation Type | Must Be Zero | 335 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 336 * 0 1 2 3 337 */ 338 struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t { 339 nd_byte rd[8]; 340 nd_uint16_t sender_ve_id; 341 nd_uint16_t receiver_ve_id; 342 nd_uint16_t encapsulation; 343 }; 344 345 /* 346 * 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 1 347 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 348 * | Remote PE Address | 349 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 350 * | PW ID | 351 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 352 * | PW Type | Must Be Zero | 353 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 354 */ 355 struct lspping_tlv_targetfec_subtlv_fec_128_pw_old { 356 nd_ipv4 remote_pe_address; 357 nd_uint32_t pw_id; 358 nd_uint16_t pw_type; 359 }; 360 361 /* 362 * 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 1 363 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 364 * | Sender's PE Address | 365 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 366 * | Remote PE Address | 367 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 368 * | PW ID | 369 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 370 * | PW Type | Must Be Zero | 371 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 372 */ 373 struct lspping_tlv_targetfec_subtlv_fec_128_pw { 374 nd_ipv4 sender_pe_address; 375 nd_ipv4 remote_pe_address; 376 nd_uint32_t pw_id; 377 nd_uint16_t pw_type; 378 }; 379 380 /* 381 * 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 1 382 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 383 * | IPv4 prefix | 384 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 385 * | Prefix Length | Must Be Zero | 386 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 387 */ 388 struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t { 389 nd_ipv4 prefix; 390 nd_uint8_t prefix_len; 391 }; 392 393 /* 394 * 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 1 395 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 396 * | IPv6 prefix | 397 * | (16 octets) | 398 * | | 399 * | | 400 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 401 * | Prefix Length | Must Be Zero | 402 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 403 */ 404 struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t { 405 nd_ipv6 prefix; 406 nd_uint8_t prefix_len; 407 }; 408 409 /* 410 * 0 1 2 3 411 * 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 1 412 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 413 * | MTU | Address Type | Resvd (SBZ) | 414 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 415 * | Downstream IP Address (4 or 16 octets) | 416 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 417 * | Downstream Interface Address (4 or 16 octets) | 418 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 419 * | Multipath Type| Depth Limit | Multipath Length | 420 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 421 * . . 422 * . (Multipath Information) . 423 * . . 424 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 425 * | Downstream Label | Protocol | 426 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 427 * . . 428 * . . 429 * . . 430 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 431 * | Downstream Label | Protocol | 432 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 433 */ 434 /* Enough to get the address type */ 435 struct lspping_tlv_downstream_map_t { 436 nd_uint16_t mtu; 437 nd_uint8_t address_type; 438 nd_uint8_t ds_flags; 439 }; 440 441 struct lspping_tlv_downstream_map_ipv4_t { 442 nd_uint16_t mtu; 443 nd_uint8_t address_type; 444 nd_uint8_t ds_flags; 445 nd_ipv4 downstream_ip; 446 nd_ipv4 downstream_interface; 447 }; 448 449 struct lspping_tlv_downstream_map_ipv4_unmb_t { 450 nd_uint16_t mtu; 451 nd_uint8_t address_type; 452 nd_uint8_t ds_flags; 453 nd_ipv4 downstream_ip; 454 nd_uint32_t downstream_interface; 455 }; 456 457 struct lspping_tlv_downstream_map_ipv6_t { 458 nd_uint16_t mtu; 459 nd_uint8_t address_type; 460 nd_uint8_t ds_flags; 461 nd_ipv6 downstream_ip; 462 nd_ipv6 downstream_interface; 463 }; 464 465 struct lspping_tlv_downstream_map_ipv6_unmb_t { 466 nd_uint16_t mtu; 467 nd_uint8_t address_type; 468 nd_uint8_t ds_flags; 469 nd_ipv6 downstream_ip; 470 nd_uint32_t downstream_interface; 471 }; 472 473 struct lspping_tlv_downstream_map_info_t { 474 nd_uint8_t multipath_type; 475 nd_uint8_t depth_limit; 476 nd_uint16_t multipath_length; 477 }; 478 479 #define LSPPING_AFI_IPV4 1 480 #define LSPPING_AFI_IPV4_UNMB 2 481 #define LSPPING_AFI_IPV6 3 482 #define LSPPING_AFI_IPV6_UNMB 4 483 484 static const struct tok lspping_tlv_downstream_addr_values[] = { 485 { LSPPING_AFI_IPV4, "IPv4"}, 486 { LSPPING_AFI_IPV4_UNMB, "Unnumbered IPv4"}, 487 { LSPPING_AFI_IPV6, "IPv6"}, 488 { LSPPING_AFI_IPV6_UNMB, "IPv6"}, 489 { 0, NULL} 490 }; 491 492 void 493 lspping_print(netdissect_options *ndo, 494 const u_char *pptr, u_int len) 495 { 496 const struct lspping_common_header *lspping_com_header; 497 const struct lspping_tlv_header *lspping_tlv_header; 498 const struct lspping_tlv_header *lspping_subtlv_header; 499 const u_char *tptr,*tlv_tptr,*subtlv_tptr; 500 u_int return_code, return_subcode; 501 u_int tlen,lspping_tlv_len,lspping_tlv_type,tlv_tlen; 502 int tlv_hexdump,subtlv_hexdump; 503 u_int lspping_subtlv_len,lspping_subtlv_type; 504 uint32_t int_part, fraction; 505 u_int address_type; 506 507 union { 508 const struct lspping_tlv_downstream_map_t *lspping_tlv_downstream_map; 509 const struct lspping_tlv_downstream_map_ipv4_t *lspping_tlv_downstream_map_ipv4; 510 const struct lspping_tlv_downstream_map_ipv4_unmb_t *lspping_tlv_downstream_map_ipv4_unmb; 511 const struct lspping_tlv_downstream_map_ipv6_t *lspping_tlv_downstream_map_ipv6; 512 const struct lspping_tlv_downstream_map_ipv6_unmb_t *lspping_tlv_downstream_map_ipv6_unmb; 513 const struct lspping_tlv_downstream_map_info_t *lspping_tlv_downstream_map_info; 514 } tlv_ptr; 515 516 union { 517 const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *lspping_tlv_targetfec_subtlv_ldp_ipv4; 518 const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *lspping_tlv_targetfec_subtlv_ldp_ipv6; 519 const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *lspping_tlv_targetfec_subtlv_rsvp_ipv4; 520 const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *lspping_tlv_targetfec_subtlv_rsvp_ipv6; 521 const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv4; 522 const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *lspping_tlv_targetfec_subtlv_l3vpn_ipv6; 523 const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *lspping_tlv_targetfec_subtlv_l2vpn_endpt; 524 const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *lspping_tlv_targetfec_subtlv_l2vpn_vcid_old; 525 const struct lspping_tlv_targetfec_subtlv_fec_128_pw *lspping_tlv_targetfec_subtlv_l2vpn_vcid; 526 const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *lspping_tlv_targetfec_subtlv_bgp_ipv4; 527 const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *lspping_tlv_targetfec_subtlv_bgp_ipv6; 528 } subtlv_ptr; 529 530 ndo->ndo_protocol = "lspping"; 531 tptr=pptr; 532 lspping_com_header = (const struct lspping_common_header *)pptr; 533 if (len < sizeof(struct lspping_common_header)) 534 goto tooshort; 535 ND_TCHECK_SIZE(lspping_com_header); 536 537 /* 538 * Sanity checking of the header. 539 */ 540 if (GET_BE_U_2(lspping_com_header->version) != LSPPING_VERSION) { 541 ND_PRINT("LSP-PING version %u packet not supported", 542 GET_BE_U_2(lspping_com_header->version)); 543 return; 544 } 545 546 /* in non-verbose mode just lets print the basic Message Type*/ 547 if (ndo->ndo_vflag < 1) { 548 ND_PRINT("LSP-PINGv%u, %s, seq %u, length: %u", 549 GET_BE_U_2(lspping_com_header->version), 550 tok2str(lspping_msg_type_values, "unknown (%u)",GET_U_1(lspping_com_header->msg_type)), 551 GET_BE_U_4(lspping_com_header->seq_number), 552 len); 553 return; 554 } 555 556 /* ok they seem to want to know everything - lets fully decode it */ 557 558 tlen=len; 559 560 ND_PRINT("\n\tLSP-PINGv%u, msg-type: %s (%u), length: %u\n\t reply-mode: %s (%u)", 561 GET_BE_U_2(lspping_com_header->version), 562 tok2str(lspping_msg_type_values, "unknown",GET_U_1(lspping_com_header->msg_type)), 563 GET_U_1(lspping_com_header->msg_type), 564 len, 565 tok2str(lspping_reply_mode_values, "unknown",GET_U_1(lspping_com_header->reply_mode)), 566 GET_U_1(lspping_com_header->reply_mode)); 567 568 /* 569 * the following return codes require that the subcode is attached 570 * at the end of the translated token output 571 */ 572 return_code = GET_U_1(lspping_com_header->return_code); 573 return_subcode = GET_U_1(lspping_com_header->return_subcode); 574 if (return_code == 3 || 575 return_code == 4 || 576 return_code == 8 || 577 return_code == 10 || 578 return_code == 11 || 579 return_code == 12 ) 580 ND_PRINT("\n\t Return Code: %s %u (%u)\n\t Return Subcode: (%u)", 581 tok2str(lspping_return_code_values, "unknown",return_code), 582 return_subcode, 583 return_code, 584 return_subcode); 585 else 586 ND_PRINT("\n\t Return Code: %s (%u)\n\t Return Subcode: (%u)", 587 tok2str(lspping_return_code_values, "unknown",return_code), 588 return_code, 589 return_subcode); 590 591 ND_PRINT("\n\t Sender Handle: 0x%08x, Sequence: %u", 592 GET_BE_U_4(lspping_com_header->sender_handle), 593 GET_BE_U_4(lspping_com_header->seq_number)); 594 595 ND_PRINT("\n\t Sender Timestamp: "); 596 p_ntp_time(ndo, &lspping_com_header->ts_sent); 597 ND_PRINT(" "); 598 599 int_part=GET_BE_U_4(lspping_com_header->ts_rcvd.int_part); 600 fraction=GET_BE_U_4(lspping_com_header->ts_rcvd.fraction); 601 ND_PRINT("Receiver Timestamp: "); 602 if (! (int_part == 0 && fraction == 0)) 603 p_ntp_time(ndo, &lspping_com_header->ts_rcvd); 604 else 605 ND_PRINT("no timestamp"); 606 607 tptr+=sizeof(struct lspping_common_header); 608 tlen-=sizeof(struct lspping_common_header); 609 610 while (tlen != 0) { 611 /* Does the TLV go past the end of the packet? */ 612 if (tlen < sizeof(struct lspping_tlv_header)) 613 goto tooshort; 614 615 lspping_tlv_header = (const struct lspping_tlv_header *)tptr; 616 lspping_tlv_type=GET_BE_U_2(lspping_tlv_header->type); 617 lspping_tlv_len=GET_BE_U_2(lspping_tlv_header->length); 618 619 ND_PRINT("\n\t %s TLV (%u), length: %u", 620 tok2str(lspping_tlv_values, 621 "Unknown", 622 lspping_tlv_type), 623 lspping_tlv_type, 624 lspping_tlv_len); 625 626 /* some little sanity checking */ 627 if (lspping_tlv_len == 0) { 628 tptr+=sizeof(struct lspping_tlv_header); 629 tlen-=sizeof(struct lspping_tlv_header); 630 continue; /* no value to dissect */ 631 } 632 633 tlv_tptr=tptr+sizeof(struct lspping_tlv_header); 634 tlv_tlen=lspping_tlv_len; /* header not included -> no adjustment */ 635 636 /* Does the TLV go past the end of the packet? */ 637 if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header)) 638 goto tooshort; 639 /* did we capture enough for fully decoding the tlv ? */ 640 ND_TCHECK_LEN(tlv_tptr, lspping_tlv_len); 641 tlv_hexdump=FALSE; 642 643 switch(lspping_tlv_type) { 644 case LSPPING_TLV_TARGET_FEC_STACK: 645 while (tlv_tlen != 0) { 646 /* Does the subTLV header go past the end of the TLV? */ 647 if (tlv_tlen < sizeof(struct lspping_tlv_header)) { 648 ND_PRINT("\n\t TLV is too short"); 649 tlv_hexdump = TRUE; 650 goto tlv_tooshort; 651 } 652 subtlv_hexdump=FALSE; 653 654 lspping_subtlv_header = (const struct lspping_tlv_header *)tlv_tptr; 655 lspping_subtlv_type=GET_BE_U_2(lspping_subtlv_header->type); 656 lspping_subtlv_len=GET_BE_U_2(lspping_subtlv_header->length); 657 subtlv_tptr=tlv_tptr+sizeof(struct lspping_tlv_header); 658 659 /* Does the subTLV go past the end of the TLV? */ 660 if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) { 661 ND_PRINT("\n\t TLV is too short"); 662 tlv_hexdump = TRUE; 663 goto tlv_tooshort; 664 } 665 666 /* Did we capture enough for fully decoding the subTLV? */ 667 ND_TCHECK_LEN(subtlv_tptr, lspping_subtlv_len); 668 669 ND_PRINT("\n\t %s subTLV (%u), length: %u", 670 tok2str(lspping_tlvtargetfec_subtlv_values, 671 "Unknown", 672 lspping_subtlv_type), 673 lspping_subtlv_type, 674 lspping_subtlv_len); 675 676 switch(lspping_subtlv_type) { 677 678 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV4: 679 /* Is the subTLV length correct? */ 680 if (lspping_subtlv_len != 5) { 681 ND_PRINT("\n\t invalid subTLV length, should be 5"); 682 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 683 } else { 684 subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4 = 685 (const struct lspping_tlv_targetfec_subtlv_ldp_ipv4_t *)subtlv_tptr; 686 ND_PRINT("\n\t %s/%u", 687 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix), 688 GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv4->prefix_len)); 689 } 690 break; 691 692 case LSPPING_TLV_TARGETFEC_SUBTLV_LDP_IPV6: 693 /* Is the subTLV length correct? */ 694 if (lspping_subtlv_len != 17) { 695 ND_PRINT("\n\t invalid subTLV length, should be 17"); 696 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 697 } else { 698 subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6 = 699 (const struct lspping_tlv_targetfec_subtlv_ldp_ipv6_t *)subtlv_tptr; 700 ND_PRINT("\n\t %s/%u", 701 GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix), 702 GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_ldp_ipv6->prefix_len)); 703 } 704 break; 705 706 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV4: 707 /* Is the subTLV length correct? */ 708 if (lspping_subtlv_len != 5) { 709 ND_PRINT("\n\t invalid subTLV length, should be 5"); 710 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 711 } else { 712 subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4 = 713 (const struct lspping_tlv_targetfec_subtlv_bgp_ipv4_t *)subtlv_tptr; 714 ND_PRINT("\n\t %s/%u", 715 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix), 716 GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv4->prefix_len)); 717 } 718 break; 719 720 case LSPPING_TLV_TARGETFEC_SUBTLV_BGP_IPV6: 721 /* Is the subTLV length correct? */ 722 if (lspping_subtlv_len != 17) { 723 ND_PRINT("\n\t invalid subTLV length, should be 17"); 724 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 725 } else { 726 subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6 = 727 (const struct lspping_tlv_targetfec_subtlv_bgp_ipv6_t *)subtlv_tptr; 728 ND_PRINT("\n\t %s/%u", 729 GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix), 730 GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_bgp_ipv6->prefix_len)); 731 } 732 break; 733 734 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV4: 735 /* Is the subTLV length correct? */ 736 if (lspping_subtlv_len != 20) { 737 ND_PRINT("\n\t invalid subTLV length, should be 20"); 738 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 739 } else { 740 subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4 = 741 (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv4_t *)subtlv_tptr; 742 ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" 743 "\n\t tunnel-id 0x%04x, extended tunnel-id %s", 744 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_endpoint), 745 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_sender), 746 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->lsp_id), 747 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->tunnel_id), 748 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv4->extended_tunnel_id)); 749 } 750 break; 751 752 case LSPPING_TLV_TARGETFEC_SUBTLV_RSVP_IPV6: 753 /* Is the subTLV length correct? */ 754 if (lspping_subtlv_len != 56) { 755 ND_PRINT("\n\t invalid subTLV length, should be 56"); 756 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 757 } else { 758 subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6 = 759 (const struct lspping_tlv_targetfec_subtlv_rsvp_ipv6_t *)subtlv_tptr; 760 ND_PRINT("\n\t tunnel end-point %s, tunnel sender %s, lsp-id 0x%04x" 761 "\n\t tunnel-id 0x%04x, extended tunnel-id %s", 762 GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_endpoint), 763 GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_sender), 764 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->lsp_id), 765 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->tunnel_id), 766 GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_rsvp_ipv6->extended_tunnel_id)); 767 } 768 break; 769 770 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV4: 771 /* Is the subTLV length correct? */ 772 if (lspping_subtlv_len != 13) { 773 ND_PRINT("\n\t invalid subTLV length, should be 13"); 774 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 775 } else { 776 subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4 = 777 (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv4_t *)subtlv_tptr; 778 ND_PRINT("\n\t RD: %s, %s/%u", 779 bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->rd), 780 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix), 781 GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv4->prefix_len)); 782 } 783 break; 784 785 case LSPPING_TLV_TARGETFEC_SUBTLV_L3VPN_IPV6: 786 /* Is the subTLV length correct? */ 787 if (lspping_subtlv_len != 25) { 788 ND_PRINT("\n\t invalid subTLV length, should be 25"); 789 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 790 } else { 791 subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6 = 792 (const struct lspping_tlv_targetfec_subtlv_l3vpn_ipv6_t *)subtlv_tptr; 793 ND_PRINT("\n\t RD: %s, %s/%u", 794 bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->rd), 795 GET_IP6ADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix), 796 GET_U_1(subtlv_ptr.lspping_tlv_targetfec_subtlv_l3vpn_ipv6->prefix_len)); 797 } 798 break; 799 800 case LSPPING_TLV_TARGETFEC_SUBTLV_L2VPN_ENDPT: 801 /* Is the subTLV length correct? */ 802 if (lspping_subtlv_len != 14) { 803 ND_PRINT("\n\t invalid subTLV length, should be 14"); 804 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 805 } else { 806 subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt = 807 (const struct lspping_tlv_targetfec_subtlv_l2vpn_endpt_t *)subtlv_tptr; 808 ND_PRINT("\n\t RD: %s, Sender VE ID: %u, Receiver VE ID: %u" 809 "\n\t Encapsulation Type: %s (%u)", 810 bgp_vpn_rd_print(ndo, subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->rd), 811 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->sender_ve_id), 812 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->receiver_ve_id), 813 tok2str(mpls_pw_types_values, 814 "unknown", 815 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)), 816 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_endpt->encapsulation)); 817 } 818 break; 819 820 /* the old L2VPN VCID subTLV does not have support for the sender field */ 821 case LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW_OLD: 822 /* Is the subTLV length correct? */ 823 if (lspping_subtlv_len != 10) { 824 ND_PRINT("\n\t invalid subTLV length, should be 10"); 825 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 826 } else { 827 subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old = 828 (const struct lspping_tlv_targetfec_subtlv_fec_128_pw_old *)subtlv_tptr; 829 ND_PRINT("\n\t Remote PE: %s" 830 "\n\t PW ID: 0x%08x, PW Type: %s (%u)", 831 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->remote_pe_address), 832 GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_id), 833 tok2str(mpls_pw_types_values, 834 "unknown", 835 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type)), 836 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid_old->pw_type)); 837 } 838 break; 839 840 case LSPPING_TLV_TARGETFEC_SUBTLV_FEC_128_PW: 841 /* Is the subTLV length correct? */ 842 if (lspping_subtlv_len != 14) { 843 ND_PRINT("\n\t invalid subTLV length, should be 14"); 844 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 845 } else { 846 subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid = 847 (const struct lspping_tlv_targetfec_subtlv_fec_128_pw *)subtlv_tptr; 848 ND_PRINT("\n\t Sender PE: %s, Remote PE: %s" 849 "\n\t PW ID: 0x%08x, PW Type: %s (%u)", 850 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->sender_pe_address), 851 GET_IPADDR_STRING(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->remote_pe_address), 852 GET_BE_U_4(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_id), 853 tok2str(mpls_pw_types_values, 854 "unknown", 855 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type)), 856 GET_BE_U_2(subtlv_ptr.lspping_tlv_targetfec_subtlv_l2vpn_vcid->pw_type)); 857 } 858 break; 859 860 default: 861 subtlv_hexdump=TRUE; /* unknown subTLV just hexdump it */ 862 break; 863 } 864 /* do we want to see an additionally subtlv hexdump ? */ 865 if (ndo->ndo_vflag > 1 || subtlv_hexdump==TRUE) 866 print_unknown_data(ndo, tlv_tptr+sizeof(struct lspping_tlv_header), 867 "\n\t ", 868 lspping_subtlv_len); 869 870 /* All subTLVs are aligned to four octet boundary */ 871 if (lspping_subtlv_len % 4) { 872 lspping_subtlv_len += 4 - (lspping_subtlv_len % 4); 873 /* Does the subTLV, including padding, go past the end of the TLV? */ 874 if (tlv_tlen < lspping_subtlv_len+sizeof(struct lspping_tlv_header)) { 875 ND_PRINT("\n\t\t TLV is too short"); 876 return; 877 } 878 } 879 tlv_tptr+=lspping_subtlv_len; 880 tlv_tlen-=lspping_subtlv_len+sizeof(struct lspping_tlv_header); 881 } 882 break; 883 884 case LSPPING_TLV_DOWNSTREAM_MAPPING: 885 /* Does the header go past the end of the TLV? */ 886 if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_t)) { 887 ND_PRINT("\n\t TLV is too short"); 888 tlv_hexdump = TRUE; 889 goto tlv_tooshort; 890 } 891 /* Did we capture enough to get the address family? */ 892 ND_TCHECK_LEN(tlv_tptr, 893 sizeof(struct lspping_tlv_downstream_map_t)); 894 895 tlv_ptr.lspping_tlv_downstream_map= 896 (const struct lspping_tlv_downstream_map_t *)tlv_tptr; 897 898 /* that strange thing with the downstream map TLV is that until now 899 * we do not know if its IPv4 or IPv6 or is unnumbered; after 900 * we find the address-type, we recast the tlv_tptr and move on. */ 901 902 address_type = GET_U_1(tlv_ptr.lspping_tlv_downstream_map->address_type); 903 ND_PRINT("\n\t MTU: %u, Address-Type: %s (%u)", 904 GET_BE_U_2(tlv_ptr.lspping_tlv_downstream_map->mtu), 905 tok2str(lspping_tlv_downstream_addr_values, 906 "unknown", 907 address_type), 908 address_type); 909 910 switch(address_type) { 911 912 case LSPPING_AFI_IPV4: 913 /* Does the data go past the end of the TLV? */ 914 if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_t)) { 915 ND_PRINT("\n\t TLV is too short"); 916 tlv_hexdump = TRUE; 917 goto tlv_tooshort; 918 } 919 /* Did we capture enough for this part of the TLV? */ 920 ND_TCHECK_LEN(tlv_tptr, 921 sizeof(struct lspping_tlv_downstream_map_ipv4_t)); 922 923 tlv_ptr.lspping_tlv_downstream_map_ipv4= 924 (const struct lspping_tlv_downstream_map_ipv4_t *)tlv_tptr; 925 ND_PRINT("\n\t Downstream IP: %s" 926 "\n\t Downstream Interface IP: %s", 927 GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_ip), 928 GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4->downstream_interface)); 929 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_t); 930 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_t); 931 break; 932 case LSPPING_AFI_IPV4_UNMB: 933 /* Does the data go past the end of the TLV? */ 934 if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t)) { 935 ND_PRINT("\n\t TLV is too short"); 936 tlv_hexdump = TRUE; 937 goto tlv_tooshort; 938 } 939 /* Did we capture enough for this part of the TLV? */ 940 ND_TCHECK_LEN(tlv_tptr, 941 sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t)); 942 943 tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb= 944 (const struct lspping_tlv_downstream_map_ipv4_unmb_t *)tlv_tptr; 945 ND_PRINT("\n\t Downstream IP: %s" 946 "\n\t Downstream Interface Index: 0x%08x", 947 GET_IPADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_ip), 948 GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv4_unmb->downstream_interface)); 949 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t); 950 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv4_unmb_t); 951 break; 952 case LSPPING_AFI_IPV6: 953 /* Does the data go past the end of the TLV? */ 954 if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_t)) { 955 ND_PRINT("\n\t TLV is too short"); 956 tlv_hexdump = TRUE; 957 goto tlv_tooshort; 958 } 959 /* Did we capture enough for this part of the TLV? */ 960 ND_TCHECK_LEN(tlv_tptr, 961 sizeof(struct lspping_tlv_downstream_map_ipv6_t)); 962 963 tlv_ptr.lspping_tlv_downstream_map_ipv6= 964 (const struct lspping_tlv_downstream_map_ipv6_t *)tlv_tptr; 965 ND_PRINT("\n\t Downstream IP: %s" 966 "\n\t Downstream Interface IP: %s", 967 GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_ip), 968 GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6->downstream_interface)); 969 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_t); 970 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_t); 971 break; 972 case LSPPING_AFI_IPV6_UNMB: 973 /* Does the data go past the end of the TLV? */ 974 if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t)) { 975 ND_PRINT("\n\t TLV is too short"); 976 tlv_hexdump = TRUE; 977 goto tlv_tooshort; 978 } 979 /* Did we capture enough for this part of the TLV? */ 980 ND_TCHECK_LEN(tlv_tptr, 981 sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t)); 982 983 tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb= 984 (const struct lspping_tlv_downstream_map_ipv6_unmb_t *)tlv_tptr; 985 ND_PRINT("\n\t Downstream IP: %s" 986 "\n\t Downstream Interface Index: 0x%08x", 987 GET_IP6ADDR_STRING(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_ip), 988 GET_BE_U_4(tlv_ptr.lspping_tlv_downstream_map_ipv6_unmb->downstream_interface)); 989 tlv_tptr+=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t); 990 tlv_tlen-=sizeof(struct lspping_tlv_downstream_map_ipv6_unmb_t); 991 break; 992 993 default: 994 /* should not happen ! - no error message - tok2str() has barked already */ 995 break; 996 } 997 998 /* Does the data go past the end of the TLV? */ 999 if (tlv_tlen < sizeof(struct lspping_tlv_downstream_map_info_t)) { 1000 ND_PRINT("\n\t TLV is too short"); 1001 tlv_hexdump = TRUE; 1002 goto tlv_tooshort; 1003 } 1004 /* Did we capture enough for this part of the TLV? */ 1005 ND_TCHECK_LEN(tlv_tptr, 1006 sizeof(struct lspping_tlv_downstream_map_info_t)); 1007 1008 tlv_ptr.lspping_tlv_downstream_map_info= 1009 (const struct lspping_tlv_downstream_map_info_t *)tlv_tptr; 1010 1011 /* FIXME add hash-key type, depth limit, multipath processing */ 1012 1013 /* FIXME print downstream labels */ 1014 1015 tlv_hexdump=TRUE; /* dump the TLV until code complete */ 1016 1017 break; 1018 1019 case LSPPING_TLV_BFD_DISCRIMINATOR: 1020 if (tlv_tlen < LSPPING_TLV_BFD_DISCRIMINATOR_LEN) { 1021 ND_PRINT("\n\t TLV is too short"); 1022 tlv_hexdump = TRUE; 1023 goto tlv_tooshort; 1024 } else { 1025 ND_PRINT("\n\t BFD Discriminator 0x%08x", GET_BE_U_4(tlv_tptr)); 1026 } 1027 break; 1028 1029 case LSPPING_TLV_VENDOR_ENTERPRISE: 1030 { 1031 uint32_t vendor_id; 1032 1033 if (tlv_tlen < LSPPING_TLV_VENDOR_ENTERPRISE_LEN) { 1034 ND_PRINT("\n\t TLV is too short"); 1035 tlv_hexdump = TRUE; 1036 goto tlv_tooshort; 1037 } else { 1038 vendor_id = GET_BE_U_4(tlv_tptr); 1039 ND_PRINT("\n\t Vendor: %s (0x%04x)", 1040 tok2str(smi_values, "Unknown", vendor_id), 1041 vendor_id); 1042 } 1043 } 1044 break; 1045 1046 /* 1047 * FIXME those are the defined TLVs that lack a decoder 1048 * you are welcome to contribute code ;-) 1049 */ 1050 case LSPPING_TLV_PAD: 1051 case LSPPING_TLV_ERROR_CODE: 1052 case LSPPING_TLV_VENDOR_PRIVATE: 1053 1054 default: 1055 if (ndo->ndo_vflag <= 1) 1056 print_unknown_data(ndo, tlv_tptr, "\n\t ", tlv_tlen); 1057 break; 1058 } 1059 /* do we want to see an additionally tlv hexdump ? */ 1060 tlv_tooshort: 1061 if (ndo->ndo_vflag > 1 || tlv_hexdump==TRUE) 1062 print_unknown_data(ndo, tptr+sizeof(struct lspping_tlv_header), "\n\t ", 1063 lspping_tlv_len); 1064 1065 1066 /* All TLVs are aligned to four octet boundary */ 1067 if (lspping_tlv_len % 4) { 1068 lspping_tlv_len += (4 - lspping_tlv_len % 4); 1069 /* Does the TLV, including padding, go past the end of the packet? */ 1070 if (tlen < lspping_tlv_len+sizeof(struct lspping_tlv_header)) 1071 goto tooshort; 1072 } 1073 1074 tptr+=lspping_tlv_len+sizeof(struct lspping_tlv_header); 1075 tlen-=lspping_tlv_len+sizeof(struct lspping_tlv_header); 1076 } 1077 return; 1078 tooshort: 1079 ND_PRINT("\n\t\t packet is too short"); 1080 } 1081
Indexes created Wed Mar 25 00:23:37 UTC 2026