print-atm.c revision 235530
1221163Sadrian/* 2221163Sadrian * Copyright (c) 1994, 1995, 1996, 1997 3221163Sadrian * The Regents of the University of California. All rights reserved. 4221163Sadrian * 5221163Sadrian * Redistribution and use in source and binary forms, with or without 6221163Sadrian * modification, are permitted provided that: (1) source code distributions 7221163Sadrian * retain the above copyright notice and this paragraph in its entirety, (2) 8221163Sadrian * distributions including binary code include the above copyright notice and 9221163Sadrian * this paragraph in its entirety in the documentation or other materials 10221163Sadrian * provided with the distribution, and (3) all advertising materials mentioning 11221163Sadrian * features or use of this software display the following acknowledgement: 12221163Sadrian * ``This product includes software developed by the University of California, 13221163Sadrian * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14221163Sadrian * the University nor the names of its contributors may be used to endorse 15221163Sadrian * or promote products derived from this software without specific prior 16221163Sadrian * written permission. 17221163Sadrian * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18221163Sadrian * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19221163Sadrian * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20221163Sadrian * 21221163Sadrian * $FreeBSD: head/contrib/tcpdump/print-atm.c 235530 2012-05-17 05:11:57Z delphij $ 22221163Sadrian */ 23221163Sadrian#ifndef lint 24221163Sadrianstatic const char rcsid[] _U_ = 25221163Sadrian "@(#) $Header: /tcpdump/master/tcpdump/print-atm.c,v 1.49 2007-10-22 19:37:51 guy Exp $ (LBL)"; 26221163Sadrian#endif 27221163Sadrian 28221163Sadrian#ifdef HAVE_CONFIG_H 29221163Sadrian#include "config.h" 30221163Sadrian#endif 31221163Sadrian 32221163Sadrian#include <tcpdump-stdinc.h> 33221163Sadrian 34221163Sadrian#include <stdio.h> 35221163Sadrian#include <pcap.h> 36221163Sadrian#include <string.h> 37221163Sadrian 38221163Sadrian#include "interface.h" 39221163Sadrian#include "extract.h" 40221163Sadrian#include "addrtoname.h" 41221163Sadrian#include "ethertype.h" 42221163Sadrian#include "atm.h" 43221163Sadrian#include "atmuni31.h" 44221163Sadrian#include "llc.h" 45221163Sadrian 46221163Sadrian#include "ether.h" 47221163Sadrian 48221163Sadrian#define OAM_CRC10_MASK 0x3ff 49221163Sadrian#define OAM_PAYLOAD_LEN 48 50221163Sadrian#define OAM_FUNCTION_SPECIFIC_LEN 45 /* this excludes crc10 and cell-type/function-type */ 51221163Sadrian#define OAM_CELLTYPE_FUNCTYPE_LEN 1 52221163Sadrian 53221163Sadrianstruct tok oam_f_values[] = { 54221163Sadrian { VCI_OAMF4SC, "OAM F4 (segment)" }, 55221163Sadrian { VCI_OAMF4EC, "OAM F4 (end)" }, 56221163Sadrian { 0, NULL } 57221163Sadrian}; 58221163Sadrian 59221163Sadrianstruct tok atm_pty_values[] = { 60221163Sadrian { 0x0, "user data, uncongested, SDU 0" }, 61221163Sadrian { 0x1, "user data, uncongested, SDU 1" }, 62221163Sadrian { 0x2, "user data, congested, SDU 0" }, 63221163Sadrian { 0x3, "user data, congested, SDU 1" }, 64221163Sadrian { 0x4, "VCC OAM F5 flow segment" }, 65221163Sadrian { 0x5, "VCC OAM F5 flow end-to-end" }, 66221163Sadrian { 0x6, "Traffic Control and resource Mgmt" }, 67221163Sadrian { 0, NULL } 68221163Sadrian}; 69221163Sadrian 70221163Sadrian#define OAM_CELLTYPE_FM 0x1 71221163Sadrian#define OAM_CELLTYPE_PM 0x2 72221163Sadrian#define OAM_CELLTYPE_AD 0x8 73221163Sadrian#define OAM_CELLTYPE_SM 0xf 74221163Sadrian 75221163Sadrianstruct tok oam_celltype_values[] = { 76221163Sadrian { OAM_CELLTYPE_FM, "Fault Management" }, 77221163Sadrian { OAM_CELLTYPE_PM, "Performance Management" }, 78221163Sadrian { OAM_CELLTYPE_AD, "activate/deactivate" }, 79221163Sadrian { OAM_CELLTYPE_SM, "System Management" }, 80221163Sadrian { 0, NULL } 81225883Sadrian}; 82221163Sadrian 83221163Sadrian#define OAM_FM_FUNCTYPE_AIS 0x0 84221163Sadrian#define OAM_FM_FUNCTYPE_RDI 0x1 85221163Sadrian#define OAM_FM_FUNCTYPE_CONTCHECK 0x4 86221163Sadrian#define OAM_FM_FUNCTYPE_LOOPBACK 0x8 87225883Sadrian 88221163Sadrianstruct tok oam_fm_functype_values[] = { 89221163Sadrian { OAM_FM_FUNCTYPE_AIS, "AIS" }, 90221163Sadrian { OAM_FM_FUNCTYPE_RDI, "RDI" }, 91221163Sadrian { OAM_FM_FUNCTYPE_CONTCHECK, "Continuity Check" }, 92221163Sadrian { OAM_FM_FUNCTYPE_LOOPBACK, "Loopback" }, 93221163Sadrian { 0, NULL } 94221163Sadrian}; 95221163Sadrian 96221163Sadrianstruct tok oam_pm_functype_values[] = { 97221163Sadrian { 0x0, "Forward Monitoring" }, 98221163Sadrian { 0x1, "Backward Reporting" }, 99221163Sadrian { 0x2, "Monitoring and Reporting" }, 100221163Sadrian { 0, NULL } 101221163Sadrian}; 102221163Sadrian 103221163Sadrianstruct tok oam_ad_functype_values[] = { 104221163Sadrian { 0x0, "Performance Monitoring" }, 105221163Sadrian { 0x1, "Continuity Check" }, 106221163Sadrian { 0, NULL } 107221163Sadrian}; 108221163Sadrian 109221163Sadrian#define OAM_FM_LOOPBACK_INDICATOR_MASK 0x1 110221163Sadrian 111221163Sadrianstruct tok oam_fm_loopback_indicator_values[] = { 112221163Sadrian { 0x0, "Reply" }, 113221163Sadrian { 0x1, "Request" }, 114221163Sadrian { 0, NULL } 115221163Sadrian}; 116221163Sadrian 117221163Sadrianstatic const struct tok *oam_functype_values[16] = { 118221163Sadrian NULL, 119221163Sadrian oam_fm_functype_values, /* 1 */ 120221163Sadrian oam_pm_functype_values, /* 2 */ 121221163Sadrian NULL, 122221163Sadrian NULL, 123221163Sadrian NULL, 124221163Sadrian NULL, 125221163Sadrian NULL, 126221163Sadrian oam_ad_functype_values, /* 8 */ 127221163Sadrian NULL, 128221163Sadrian NULL, 129221163Sadrian NULL, 130221163Sadrian NULL, 131221163Sadrian NULL, 132221163Sadrian NULL, 133221163Sadrian NULL 134221163Sadrian}; 135221163Sadrian 136221163Sadrian/* 137221163Sadrian * Print an RFC 1483 LLC-encapsulated ATM frame. 138221163Sadrian */ 139221163Sadrianstatic void 140221163Sadrianatm_llc_print(const u_char *p, int length, int caplen) 141221163Sadrian{ 142221163Sadrian u_short extracted_ethertype; 143221163Sadrian 144221163Sadrian if (!llc_print(p, length, caplen, NULL, NULL, 145221163Sadrian &extracted_ethertype)) { 146221163Sadrian /* ether_type not known, print raw packet */ 147221163Sadrian if (extracted_ethertype) { 148221163Sadrian printf("(LLC %s) ", 149221163Sadrian etherproto_string(htons(extracted_ethertype))); 150221163Sadrian } 151221163Sadrian if (!suppress_default_print) 152221163Sadrian default_print(p, caplen); 153221163Sadrian } 154221163Sadrian} 155221163Sadrian 156221163Sadrian/* 157221163Sadrian * Given a SAP value, generate the LLC header value for a UI packet 158221163Sadrian * with that SAP as the source and destination SAP. 159221163Sadrian */ 160221163Sadrian#define LLC_UI_HDR(sap) ((sap)<<16 | (sap<<8) | 0x03) 161221163Sadrian 162221163Sadrian/* 163221163Sadrian * This is the top level routine of the printer. 'p' points 164221163Sadrian * to the LLC/SNAP header of the packet, 'h->ts' is the timestamp, 165221163Sadrian * 'h->len' is the length of the packet off the wire, and 'h->caplen' 166221163Sadrian * is the number of bytes actually captured. 167221163Sadrian */ 168221163Sadrianu_int 169221163Sadrianatm_if_print(const struct pcap_pkthdr *h, const u_char *p) 170221163Sadrian{ 171221163Sadrian u_int caplen = h->caplen; 172221163Sadrian u_int length = h->len; 173221163Sadrian u_int32_t llchdr; 174221163Sadrian u_int hdrlen = 0; 175221163Sadrian 176221163Sadrian if (caplen < 8) { 177221163Sadrian printf("[|atm]"); 178221163Sadrian return (caplen); 179221163Sadrian } 180221163Sadrian 181221163Sadrian /* Cisco Style NLPID ? */ 182221163Sadrian if (*p == LLC_UI) { 183221163Sadrian if (eflag) 184221163Sadrian printf("CNLPID "); 185221163Sadrian isoclns_print(p+1, length-1, caplen-1); 186221163Sadrian return hdrlen; 187221163Sadrian } 188221163Sadrian 189221163Sadrian /* 190221163Sadrian * Extract the presumed LLC header into a variable, for quick 191221163Sadrian * testing. 192221163Sadrian * Then check for a header that's neither a header for a SNAP 193221163Sadrian * packet nor an RFC 2684 routed NLPID-formatted PDU nor 194221163Sadrian * an 802.2-but-no-SNAP IP packet. 195221163Sadrian */ 196221163Sadrian llchdr = EXTRACT_24BITS(p); 197221163Sadrian if (llchdr != LLC_UI_HDR(LLCSAP_SNAP) && 198221163Sadrian llchdr != LLC_UI_HDR(LLCSAP_ISONS) && 199221163Sadrian llchdr != LLC_UI_HDR(LLCSAP_IP)) { 200221163Sadrian /* 201221163Sadrian * XXX - assume 802.6 MAC header from Fore driver. 202221163Sadrian * 203221163Sadrian * Unfortunately, the above list doesn't check for 204221163Sadrian * all known SAPs, doesn't check for headers where 205221163Sadrian * the source and destination SAP aren't the same, 206221163Sadrian * and doesn't check for non-UI frames. It also 207221163Sadrian * runs the risk of an 802.6 MAC header that happens 208221163Sadrian * to begin with one of those values being 209221163Sadrian * incorrectly treated as an 802.2 header. 210221163Sadrian * 211221163Sadrian * So is that Fore driver still around? And, if so, 212221163Sadrian * is it still putting 802.6 MAC headers on ATM 213221163Sadrian * packets? If so, could it be changed to use a 214221163Sadrian * new DLT_IEEE802_6 value if we added it? 215221163Sadrian */ 216221163Sadrian if (eflag) 217221163Sadrian printf("%08x%08x %08x%08x ", 218221163Sadrian EXTRACT_32BITS(p), 219221163Sadrian EXTRACT_32BITS(p+4), 220221163Sadrian EXTRACT_32BITS(p+8), 221221163Sadrian EXTRACT_32BITS(p+12)); 222221163Sadrian p += 20; 223221163Sadrian length -= 20; 224221163Sadrian caplen -= 20; 225221163Sadrian hdrlen += 20; 226221163Sadrian } 227221163Sadrian atm_llc_print(p, length, caplen); 228221163Sadrian return (hdrlen); 229221163Sadrian} 230221163Sadrian 231221163Sadrian/* 232221163Sadrian * ATM signalling. 233221163Sadrian */ 234221163Sadrianstatic struct tok msgtype2str[] = { 235221163Sadrian { CALL_PROCEED, "Call_proceeding" }, 236221163Sadrian { CONNECT, "Connect" }, 237221163Sadrian { CONNECT_ACK, "Connect_ack" }, 238221163Sadrian { SETUP, "Setup" }, 239221596Sadrian { RELEASE, "Release" }, 240221596Sadrian { RELEASE_DONE, "Release_complete" }, 241221163Sadrian { RESTART, "Restart" }, 242221596Sadrian { RESTART_ACK, "Restart_ack" }, 243221163Sadrian { STATUS, "Status" }, 244221163Sadrian { STATUS_ENQ, "Status_enquiry" }, 245221163Sadrian { ADD_PARTY, "Add_party" }, 246221163Sadrian { ADD_PARTY_ACK, "Add_party_ack" }, 247221163Sadrian { ADD_PARTY_REJ, "Add_party_reject" }, 248221163Sadrian { DROP_PARTY, "Drop_party" }, 249221163Sadrian { DROP_PARTY_ACK, "Drop_party_ack" }, 250221163Sadrian { 0, NULL } 251221163Sadrian}; 252221163Sadrian 253221163Sadrianstatic void 254221163Sadriansig_print(const u_char *p, int caplen) 255221163Sadrian{ 256221163Sadrian bpf_u_int32 call_ref; 257221163Sadrian 258221163Sadrian if (caplen < PROTO_POS) { 259221163Sadrian printf("[|atm]"); 260221163Sadrian return; 261221163Sadrian } 262221163Sadrian if (p[PROTO_POS] == Q2931) { 263221163Sadrian /* 264221163Sadrian * protocol:Q.2931 for User to Network Interface 265221163Sadrian * (UNI 3.1) signalling 266221163Sadrian */ 267221163Sadrian printf("Q.2931"); 268221163Sadrian if (caplen < MSG_TYPE_POS) { 269221163Sadrian printf(" [|atm]"); 270221163Sadrian return; 271221163Sadrian } 272221163Sadrian printf(":%s ", 273221163Sadrian tok2str(msgtype2str, "msgtype#%d", p[MSG_TYPE_POS])); 274221163Sadrian 275221163Sadrian /* 276221163Sadrian * The call reference comes before the message type, 277221163Sadrian * so if we know we have the message type, which we 278221163Sadrian * do from the caplen test above, we also know we have 279221163Sadrian * the call reference. 280221163Sadrian */ 281221163Sadrian call_ref = EXTRACT_24BITS(&p[CALL_REF_POS]); 282221163Sadrian printf("CALL_REF:0x%06x", call_ref); 283221163Sadrian } else { 284221163Sadrian /* SCCOP with some unknown protocol atop it */ 285221163Sadrian printf("SSCOP, proto %d ", p[PROTO_POS]); 286221163Sadrian } 287221163Sadrian} 288221163Sadrian 289221163Sadrian/* 290221163Sadrian * Print an ATM PDU (such as an AAL5 PDU). 291221163Sadrian */ 292222584Sadrianvoid 293221163Sadrianatm_print(u_int vpi, u_int vci, u_int traftype, const u_char *p, u_int length, 294221603Sadrian u_int caplen) 295221603Sadrian{ 296221603Sadrian if (eflag) 297221603Sadrian printf("VPI:%u VCI:%u ", vpi, vci); 298221603Sadrian 299221603Sadrian if (vpi == 0) { 300221603Sadrian switch (vci) { 301226488Sadrian 302226488Sadrian case VCI_PPC: 303221603Sadrian sig_print(p, caplen); 304221163Sadrian return; 305221163Sadrian 306221163Sadrian case VCI_BCC: 307221163Sadrian printf("broadcast sig: "); 308221163Sadrian return; 309221163Sadrian 310221163Sadrian case VCI_OAMF4SC: /* fall through */ 311221163Sadrian case VCI_OAMF4EC: 312221163Sadrian oam_print(p, length, ATM_OAM_HEC); 313221163Sadrian return; 314221163Sadrian 315 case VCI_METAC: 316 printf("meta: "); 317 return; 318 319 case VCI_ILMIC: 320 printf("ilmi: "); 321 snmp_print(p, length); 322 return; 323 } 324 } 325 326 switch (traftype) { 327 328 case ATM_LLC: 329 default: 330 /* 331 * Assumes traffic is LLC if unknown. 332 */ 333 atm_llc_print(p, length, caplen); 334 break; 335 336 case ATM_LANE: 337 lane_print(p, length, caplen); 338 break; 339 } 340} 341 342struct oam_fm_loopback_t { 343 u_int8_t loopback_indicator; 344 u_int8_t correlation_tag[4]; 345 u_int8_t loopback_id[12]; 346 u_int8_t source_id[12]; 347 u_int8_t unused[16]; 348}; 349 350struct oam_fm_ais_rdi_t { 351 u_int8_t failure_type; 352 u_int8_t failure_location[16]; 353 u_int8_t unused[28]; 354}; 355 356int 357oam_print (const u_char *p, u_int length, u_int hec) { 358 359 u_int32_t cell_header; 360 u_int16_t vpi, vci, cksum, cksum_shouldbe, idx; 361 u_int8_t cell_type, func_type, payload, clp; 362 363 union { 364 const struct oam_fm_loopback_t *oam_fm_loopback; 365 const struct oam_fm_ais_rdi_t *oam_fm_ais_rdi; 366 } oam_ptr; 367 368 369 cell_header = EXTRACT_32BITS(p+hec); 370 cell_type = ((*(p+ATM_HDR_LEN_NOHEC+hec))>>4) & 0x0f; 371 func_type = (*(p+ATM_HDR_LEN_NOHEC+hec)) & 0x0f; 372 373 vpi = (cell_header>>20)&0xff; 374 vci = (cell_header>>4)&0xffff; 375 payload = (cell_header>>1)&0x7; 376 clp = cell_header&0x1; 377 378 printf("%s, vpi %u, vci %u, payload [ %s ], clp %u, length %u", 379 tok2str(oam_f_values, "OAM F5", vci), 380 vpi, vci, 381 tok2str(atm_pty_values, "Unknown", payload), 382 clp, length); 383 384 if (!vflag) { 385 return 1; 386 } 387 388 printf("\n\tcell-type %s (%u)", 389 tok2str(oam_celltype_values, "unknown", cell_type), 390 cell_type); 391 392 if (oam_functype_values[cell_type] == NULL) 393 printf(", func-type unknown (%u)", func_type); 394 else 395 printf(", func-type %s (%u)", 396 tok2str(oam_functype_values[cell_type],"none",func_type), 397 func_type); 398 399 p += ATM_HDR_LEN_NOHEC + hec; 400 401 switch (cell_type << 4 | func_type) { 402 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_LOOPBACK): 403 oam_ptr.oam_fm_loopback = (const struct oam_fm_loopback_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN); 404 printf("\n\tLoopback-Indicator %s, Correlation-Tag 0x%08x", 405 tok2str(oam_fm_loopback_indicator_values, 406 "Unknown", 407 oam_ptr.oam_fm_loopback->loopback_indicator & OAM_FM_LOOPBACK_INDICATOR_MASK), 408 EXTRACT_32BITS(&oam_ptr.oam_fm_loopback->correlation_tag)); 409 printf("\n\tLocation-ID "); 410 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->loopback_id); idx++) { 411 if (idx % 2) { 412 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->loopback_id[idx])); 413 } 414 } 415 printf("\n\tSource-ID "); 416 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_loopback->source_id); idx++) { 417 if (idx % 2) { 418 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_loopback->source_id[idx])); 419 } 420 } 421 break; 422 423 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_AIS): 424 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_RDI): 425 oam_ptr.oam_fm_ais_rdi = (const struct oam_fm_ais_rdi_t *)(p + OAM_CELLTYPE_FUNCTYPE_LEN); 426 printf("\n\tFailure-type 0x%02x", oam_ptr.oam_fm_ais_rdi->failure_type); 427 printf("\n\tLocation-ID "); 428 for (idx = 0; idx < sizeof(oam_ptr.oam_fm_ais_rdi->failure_location); idx++) { 429 if (idx % 2) { 430 printf("%04x ", EXTRACT_16BITS(&oam_ptr.oam_fm_ais_rdi->failure_location[idx])); 431 } 432 } 433 break; 434 435 case (OAM_CELLTYPE_FM << 4 | OAM_FM_FUNCTYPE_CONTCHECK): 436 /* FIXME */ 437 break; 438 439 default: 440 break; 441 } 442 443 /* crc10 checksum verification */ 444 cksum = EXTRACT_16BITS(p + OAM_CELLTYPE_FUNCTYPE_LEN + OAM_FUNCTION_SPECIFIC_LEN) 445 & OAM_CRC10_MASK; 446 cksum_shouldbe = verify_crc10_cksum(0, p, OAM_PAYLOAD_LEN); 447 448 printf("\n\tcksum 0x%03x (%scorrect)", 449 cksum, 450 cksum_shouldbe == 0 ? "" : "in"); 451 452 return 1; 453} 454