1 /*
2  * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
3  *        The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that: (1) source code distributions
7  * retain the above copyright notice and this paragraph in its entirety, (2)
8  * distributions including binary code include the above copyright notice and
9  * this paragraph in its entirety in the documentation or other materials
10  * provided with the distribution, and (3) all advertising materials mentioning
11  * features or use of this software display the following acknowledgement:
12  * ``This product includes software developed by the University of California,
13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14  * the University nor the names of its contributors may be used to endorse
15  * or promote products derived from this software without specific prior
16  * written permission.
17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20  */
21 
22 #include <sys/cdefs.h>
23 #ifndef lint
24 __RCSID("$NetBSD: print-ether.c,v 1.11 2024/09/02 16:15:31 christos Exp $");
25 #endif
26 
27 /* \summary: Ethernet printer */
28 
29 #include <config.h>
30 
31 #include "netdissect-stdinc.h"
32 
33 #define ND_LONGJMP_FROM_TCHECK
34 #include "netdissect.h"
35 #include "extract.h"
36 #include "addrtoname.h"
37 #include "ethertype.h"
38 
39 /*
40  * Structure of an Ethernet header.
41  */
42 struct    ether_header {
43           nd_mac_addr         ether_dhost;
44           nd_mac_addr         ether_shost;
45           nd_uint16_t         ether_length_type;
46 };
47 
48 /*
49  * Length of an Ethernet header; note that some compilers may pad
50  * "struct ether_header" to a multiple of 4 bytes, for example, so
51  * "sizeof (struct ether_header)" may not give the right answer.
52  */
53 #define ETHER_HDRLEN                    14
54 
55 const struct tok ethertype_values[] = {
56     { ETHERTYPE_IP,           "IPv4" },
57     { ETHERTYPE_MPLS,                   "MPLS unicast" },
58     { ETHERTYPE_MPLS_MULTI,   "MPLS multicast" },
59     { ETHERTYPE_IPV6,                   "IPv6" },
60     { ETHERTYPE_8021Q,                  "802.1Q" },
61     { ETHERTYPE_8021Q9100,    "802.1Q-9100" },
62     { ETHERTYPE_8021QinQ,     "802.1Q-QinQ" },
63     { ETHERTYPE_8021Q9200,    "802.1Q-9200" },
64     { ETHERTYPE_MACSEC,                 "802.1AE MACsec" },
65     { ETHERTYPE_VMAN,                   "VMAN" },
66     { ETHERTYPE_PUP,            "PUP" },
67     { ETHERTYPE_ARP,            "ARP"},
68     { ETHERTYPE_REVARP,         "Reverse ARP"},
69     { ETHERTYPE_NS,             "NS" },
70     { ETHERTYPE_SPRITE,         "Sprite" },
71     { ETHERTYPE_TRAIL,          "Trail" },
72     { ETHERTYPE_MOPDL,          "MOP DL" },
73     { ETHERTYPE_MOPRC,          "MOP RC" },
74     { ETHERTYPE_DN,             "DN" },
75     { ETHERTYPE_LAT,            "LAT" },
76     { ETHERTYPE_SCA,            "SCA" },
77     { ETHERTYPE_TEB,            "TEB" },
78     { ETHERTYPE_LANBRIDGE,      "Lanbridge" },
79     { ETHERTYPE_DECDNS,         "DEC DNS" },
80     { ETHERTYPE_DECDTS,         "DEC DTS" },
81     { ETHERTYPE_VEXP,           "VEXP" },
82     { ETHERTYPE_VPROD,          "VPROD" },
83     { ETHERTYPE_ATALK,          "Appletalk" },
84     { ETHERTYPE_AARP,           "Appletalk ARP" },
85     { ETHERTYPE_IPX,            "IPX" },
86     { ETHERTYPE_PPP,            "PPP" },
87     { ETHERTYPE_MPCP,           "MPCP" },
88     { ETHERTYPE_SLOW,           "Slow Protocols" },
89     { ETHERTYPE_PPPOED,         "PPPoE D" },
90     { ETHERTYPE_PPPOES,         "PPPoE S" },
91     { ETHERTYPE_EAPOL,          "EAPOL" },
92     { ETHERTYPE_REALTEK,        "Realtek protocols" },
93     { ETHERTYPE_MS_NLB_HB,      "MS NLB heartbeat" },
94     { ETHERTYPE_JUMBO,          "Jumbo" },
95     { ETHERTYPE_NSH,            "NSH" },
96     { ETHERTYPE_LOOPBACK,       "Loopback" },
97     { ETHERTYPE_ISO,            "OSI" },
98     { ETHERTYPE_GRE_ISO,        "GRE-OSI" },
99     { ETHERTYPE_CFM_OLD,        "CFM (old)" },
100     { ETHERTYPE_CFM,            "CFM" },
101     { ETHERTYPE_IEEE1905_1,     "IEEE1905.1" },
102     { ETHERTYPE_LLDP,           "LLDP" },
103     { ETHERTYPE_TIPC,           "TIPC"},
104     { ETHERTYPE_GEONET_OLD,     "GeoNet (old)"},
105     { ETHERTYPE_GEONET,         "GeoNet"},
106     { ETHERTYPE_CALM_FAST,      "CALM FAST"},
107     { ETHERTYPE_AOE,            "AoE" },
108     { ETHERTYPE_PTP,            "PTP" },
109     { ETHERTYPE_ARISTA,         "Arista Vendor Specific Protocol" },
110     { 0, NULL}
111 };
112 
113 static void
ether_addresses_print(netdissect_options * ndo,const u_char * src,const u_char * dst)114 ether_addresses_print(netdissect_options *ndo, const u_char *src,
115                           const u_char *dst)
116 {
117           ND_PRINT("%s > %s, ",
118                      GET_ETHERADDR_STRING(src), GET_ETHERADDR_STRING(dst));
119 }
120 
121 static void
ether_type_print(netdissect_options * ndo,uint16_t type)122 ether_type_print(netdissect_options *ndo, uint16_t type)
123 {
124           if (!ndo->ndo_qflag)
125                     ND_PRINT("ethertype %s (0x%04x)",
126                                tok2str(ethertype_values, "Unknown", type), type);
127           else
128                     ND_PRINT("%s",
129                                tok2str(ethertype_values, "Unknown Ethertype (0x%04x)", type));
130 }
131 
132 /*
133  * Common code for printing Ethernet frames.
134  *
135  * It can handle Ethernet headers with extra tag information inserted
136  * after the destination and source addresses, as is inserted by some
137  * switch chips, and extra encapsulation header information before
138  * printing Ethernet header information (such as a LANE ID for ATM LANE).
139  */
140 static u_int
ether_common_print(netdissect_options * ndo,const u_char * p,u_int length,u_int caplen,void (* print_switch_tag)(netdissect_options * ndo,const u_char *),u_int switch_tag_len,void (* print_encap_header)(netdissect_options * ndo,const u_char *),const u_char * encap_header_arg)141 ether_common_print(netdissect_options *ndo, const u_char *p, u_int length,
142     u_int caplen,
143     void (*print_switch_tag)(netdissect_options *ndo, const u_char *),
144     u_int switch_tag_len,
145     void (*print_encap_header)(netdissect_options *ndo, const u_char *),
146     const u_char *encap_header_arg)
147 {
148           const struct ether_header *ehp;
149           u_int orig_length;
150           u_int hdrlen;
151           u_short length_type;
152           int printed_length;
153           int llc_hdrlen;
154           struct lladdr_info src, dst;
155 
156           if (length < caplen) {
157                     ND_PRINT("[length %u < caplen %u]", length, caplen);
158                     nd_print_invalid(ndo);
159                     return length;
160           }
161           if (caplen < ETHER_HDRLEN + switch_tag_len) {
162                     nd_print_trunc(ndo);
163                     return caplen;
164           }
165 
166           if (print_encap_header != NULL)
167                     (*print_encap_header)(ndo, encap_header_arg);
168 
169           orig_length = length;
170 
171           /*
172            * Get the source and destination addresses, skip past them,
173            * and print them if we're printing the link-layer header.
174            */
175           ehp = (const struct ether_header *)p;
176           src.addr = ehp->ether_shost;
177           src.addr_string = etheraddr_string;
178           dst.addr = ehp->ether_dhost;
179           dst.addr_string = etheraddr_string;
180 
181           length -= 2*MAC_ADDR_LEN;
182           caplen -= 2*MAC_ADDR_LEN;
183           p += 2*MAC_ADDR_LEN;
184           hdrlen = 2*MAC_ADDR_LEN;
185 
186           if (ndo->ndo_eflag)
187                     ether_addresses_print(ndo, src.addr, dst.addr);
188 
189           /*
190            * Print the switch tag, if we have one, and skip past it.
191            */
192           if (print_switch_tag != NULL)
193                     (*print_switch_tag)(ndo, p);
194 
195           length -= switch_tag_len;
196           caplen -= switch_tag_len;
197           p += switch_tag_len;
198           hdrlen += switch_tag_len;
199 
200           /*
201            * Get the length/type field, skip past it, and print it
202            * if we're printing the link-layer header.
203            */
204 recurse:
205           length_type = GET_BE_U_2(p);
206 
207           length -= 2;
208           caplen -= 2;
209           p += 2;
210           hdrlen += 2;
211 
212           /*
213            * Process 802.1AE MACsec headers.
214            */
215           printed_length = 0;
216           if (length_type == ETHERTYPE_MACSEC) {
217                     /*
218                      * MACsec, aka IEEE 802.1AE-2006
219                      * Print the header, and try to print the payload if it's not encrypted
220                      */
221                     if (ndo->ndo_eflag) {
222                               ether_type_print(ndo, length_type);
223                               ND_PRINT(", length %u: ", orig_length);
224                               printed_length = 1;
225                     }
226 
227                     int ret = macsec_print(ndo, &p, &length, &caplen, &hdrlen,
228                                                &src, &dst);
229 
230                     if (ret == 0) {
231                               /* Payload is encrypted; print it as raw data. */
232                               if (!ndo->ndo_suppress_default_print)
233                                         ND_DEFAULTPRINT(p, caplen);
234                               return hdrlen;
235                     } else if (ret > 0) {
236                               /* Problem printing the header; just quit. */
237                               return ret;
238                     } else {
239                               /*
240                                * Keep processing type/length fields.
241                                */
242                               length_type = GET_BE_U_2(p);
243 
244                               ND_ICHECK_U(caplen, <, 2);
245                               length -= 2;
246                               caplen -= 2;
247                               p += 2;
248                               hdrlen += 2;
249                     }
250           }
251 
252           /*
253            * Process VLAN tag types.
254            */
255           while (length_type == ETHERTYPE_8021Q  ||
256                     length_type == ETHERTYPE_8021Q9100 ||
257                     length_type == ETHERTYPE_8021Q9200 ||
258                     length_type == ETHERTYPE_8021QinQ) {
259                     /*
260                      * It has a VLAN tag.
261                      * Print VLAN information, and then go back and process
262                      * the enclosed type field.
263                      */
264                     if (caplen < 4) {
265                               ndo->ndo_protocol = "vlan";
266                               nd_print_trunc(ndo);
267                               return hdrlen + caplen;
268                     }
269                     if (length < 4) {
270                               ndo->ndo_protocol = "vlan";
271                               nd_print_trunc(ndo);
272                               return hdrlen + length;
273                     }
274                     if (ndo->ndo_eflag) {
275                               uint16_t tag = GET_BE_U_2(p);
276 
277                               ether_type_print(ndo, length_type);
278                               if (!printed_length) {
279                                         ND_PRINT(", length %u: ", orig_length);
280                                         printed_length = 1;
281                               } else
282                                         ND_PRINT(", ");
283                               ND_PRINT("%s, ", ieee8021q_tci_string(tag));
284                     }
285 
286                     length_type = GET_BE_U_2(p + 2);
287                     p += 4;
288                     length -= 4;
289                     caplen -= 4;
290                     hdrlen += 4;
291           }
292 
293           /*
294            * We now have the final length/type field.
295            */
296           if (length_type <= MAX_ETHERNET_LENGTH_VAL) {
297                     /*
298                      * It's a length field, containing the length of the
299                      * remaining payload; use it as such, as long as
300                      * it's not too large (bigger than the actual payload).
301                      */
302                     if (length_type < length) {
303                               length = length_type;
304                               if (caplen > length)
305                                         caplen = length;
306                     }
307 
308                     /*
309                      * Cut off the snapshot length to the end of the
310                      * payload.
311                      */
312                     if (!nd_push_snaplen(ndo, p, length)) {
313                               (*ndo->ndo_error)(ndo, S_ERR_ND_MEM_ALLOC,
314                                         "%s: can't push snaplen on buffer stack", __func__);
315                     }
316 
317                     if (ndo->ndo_eflag) {
318                               ND_PRINT("802.3");
319                               if (!printed_length)
320                                         ND_PRINT(", length %u: ", length);
321                     }
322 
323                     /*
324                      * An LLC header follows the length.  Print that and
325                      * higher layers.
326                      */
327                     llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
328                     if (llc_hdrlen < 0) {
329                               /* packet type not known, print raw packet */
330                               if (!ndo->ndo_suppress_default_print)
331                                         ND_DEFAULTPRINT(p, caplen);
332                               llc_hdrlen = -llc_hdrlen;
333                     }
334                     hdrlen += llc_hdrlen;
335                     nd_pop_packet_info(ndo);
336           } else if (length_type == ETHERTYPE_JUMBO) {
337                     /*
338                      * It's a type field, with the type for Alteon jumbo frames.
339                      * See
340                      *
341                      *        https://tools.ietf.org/html/draft-ietf-isis-ext-eth-01
342                      *
343                      * which indicates that, following the type field,
344                      * there's an LLC header and payload.
345                      */
346                     /* Try to print the LLC-layer header & higher layers */
347                     llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst);
348                     if (llc_hdrlen < 0) {
349                               /* packet type not known, print raw packet */
350                               if (!ndo->ndo_suppress_default_print)
351                                         ND_DEFAULTPRINT(p, caplen);
352                               llc_hdrlen = -llc_hdrlen;
353                     }
354                     hdrlen += llc_hdrlen;
355           } else if (length_type == ETHERTYPE_ARISTA) {
356                     if (caplen < 2) {
357                               ND_PRINT("[|arista]");
358                               return hdrlen + caplen;
359                     }
360                     if (length < 2) {
361                               ND_PRINT("[|arista]");
362                               return hdrlen + length;
363                     }
364                     ether_type_print(ndo, length_type);
365                     ND_PRINT(", length %u: ", orig_length);
366                     int bytesConsumed = arista_ethertype_print(ndo, p, length);
367                     if (bytesConsumed > 0) {
368                               p += bytesConsumed;
369                               length -= bytesConsumed;
370                               caplen -= bytesConsumed;
371                               hdrlen += bytesConsumed;
372                               goto recurse;
373                     } else {
374                               /* subtype/version not known, print raw packet */
375                               if (!ndo->ndo_eflag && length_type > MAX_ETHERNET_LENGTH_VAL) {
376                                         ether_addresses_print(ndo, src.addr, dst.addr);
377                                         ether_type_print(ndo, length_type);
378                                         ND_PRINT(", length %u: ", orig_length);
379                               }
380                                if (!ndo->ndo_suppress_default_print)
381                                          ND_DEFAULTPRINT(p, caplen);
382                     }
383           } else {
384                     /*
385                      * It's a type field with some other value.
386                      */
387                     if (ndo->ndo_eflag) {
388                               ether_type_print(ndo, length_type);
389                               if (!printed_length)
390                                         ND_PRINT(", length %u: ", orig_length);
391                               else
392                                         ND_PRINT(", ");
393                     }
394                     if (ethertype_print(ndo, length_type, p, length, caplen, &src, &dst) == 0) {
395                               /* type not known, print raw packet */
396                               if (!ndo->ndo_eflag) {
397                                         /*
398                                          * We didn't print the full link-layer
399                                          * header, as -e wasn't specified, so
400                                          * print only the source and destination
401                                          * MAC addresses and the final Ethernet
402                                          * type.
403                                          */
404                                         ether_addresses_print(ndo, src.addr, dst.addr);
405                                         ether_type_print(ndo, length_type);
406                                         ND_PRINT(", length %u: ", orig_length);
407                               }
408 
409                               if (!ndo->ndo_suppress_default_print)
410                                         ND_DEFAULTPRINT(p, caplen);
411                     }
412           }
413 invalid:
414           return hdrlen;
415 }
416 
417 /*
418  * Print an Ethernet frame while specifying a non-standard Ethernet header
419  * length.
420  * This might be encapsulated within another frame; we might be passed
421  * a pointer to a function that can print header information for that
422  * frame's protocol, and an argument to pass to that function.
423  *
424  * FIXME: caplen can and should be derived from ndo->ndo_snapend and p.
425  */
426 u_int
ether_switch_tag_print(netdissect_options * ndo,const u_char * p,u_int length,u_int caplen,void (* print_switch_tag)(netdissect_options *,const u_char *),u_int switch_tag_len)427 ether_switch_tag_print(netdissect_options *ndo, const u_char *p, u_int length,
428     u_int caplen,
429     void (*print_switch_tag)(netdissect_options *, const u_char *),
430     u_int switch_tag_len)
431 {
432           return ether_common_print(ndo, p, length, caplen, print_switch_tag,
433                                           switch_tag_len, NULL, NULL);
434 }
435 
436 /*
437  * Print an Ethernet frame.
438  * This might be encapsulated within another frame; we might be passed
439  * a pointer to a function that can print header information for that
440  * frame's protocol, and an argument to pass to that function.
441  *
442  * FIXME: caplen can and should be derived from ndo->ndo_snapend and p.
443  */
444 u_int
ether_print(netdissect_options * ndo,const u_char * p,u_int length,u_int caplen,void (* print_encap_header)(netdissect_options * ndo,const u_char *),const u_char * encap_header_arg)445 ether_print(netdissect_options *ndo,
446               const u_char *p, u_int length, u_int caplen,
447               void (*print_encap_header)(netdissect_options *ndo, const u_char *),
448               const u_char *encap_header_arg)
449 {
450           ndo->ndo_protocol = "ether";
451           return ether_common_print(ndo, p, length, caplen, NULL, 0,
452                                           print_encap_header, encap_header_arg);
453 }
454 
455 /*
456  * This is the top level routine of the printer.  'p' points
457  * to the ether header of the packet, 'h->len' is the length
458  * of the packet off the wire, and 'h->caplen' is the number
459  * of bytes actually captured.
460  */
461 void
ether_if_print(netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)462 ether_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
463                  const u_char *p)
464 {
465           ndo->ndo_protocol = "ether";
466           ndo->ndo_ll_hdr_len +=
467                     ether_print(ndo, p, h->len, h->caplen, NULL, NULL);
468 }
469 
470 /*
471  * This is the top level routine of the printer.  'p' points
472  * to the ether header of the packet, 'h->len' is the length
473  * of the packet off the wire, and 'h->caplen' is the number
474  * of bytes actually captured.
475  *
476  * This is for DLT_NETANALYZER, which has a 4-byte pseudo-header
477  * before the Ethernet header.
478  */
479 void
netanalyzer_if_print(netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)480 netanalyzer_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h,
481                          const u_char *p)
482 {
483           /*
484            * Fail if we don't have enough data for the Hilscher pseudo-header.
485            */
486           ndo->ndo_protocol = "netanalyzer";
487           ND_TCHECK_LEN(p, 4);
488 
489           /* Skip the pseudo-header. */
490           ndo->ndo_ll_hdr_len += 4;
491           ndo->ndo_ll_hdr_len +=
492                     ether_print(ndo, p + 4, h->len - 4, h->caplen - 4, NULL, NULL);
493 }
494 
495 /*
496  * This is the top level routine of the printer.  'p' points
497  * to the ether header of the packet, 'h->len' is the length
498  * of the packet off the wire, and 'h->caplen' is the number
499  * of bytes actually captured.
500  *
501  * This is for DLT_NETANALYZER_TRANSPARENT, which has a 4-byte
502  * pseudo-header, a 7-byte Ethernet preamble, and a 1-byte Ethernet SOF
503  * before the Ethernet header.
504  */
505 void
netanalyzer_transparent_if_print(netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)506 netanalyzer_transparent_if_print(netdissect_options *ndo,
507                                          const struct pcap_pkthdr *h,
508                                          const u_char *p)
509 {
510           /*
511            * Fail if we don't have enough data for the Hilscher pseudo-header,
512            * preamble, and SOF.
513            */
514           ndo->ndo_protocol = "netanalyzer_transparent";
515           ND_TCHECK_LEN(p, 12);
516 
517           /* Skip the pseudo-header, preamble, and SOF. */
518           ndo->ndo_ll_hdr_len += 12;
519           ndo->ndo_ll_hdr_len +=
520                     ether_print(ndo, p + 12, h->len - 12, h->caplen - 12, NULL, NULL);
521 }
522 
523 /*
524  * Prints the packet payload, given an Ethernet type code for the payload's
525  * protocol.
526  *
527  * Returns non-zero if it can do so, zero if the ethertype is unknown.
528  */
529 
530 int
ethertype_print(netdissect_options * ndo,u_short ether_type,const u_char * p,u_int length,u_int caplen,const struct lladdr_info * src,const struct lladdr_info * dst)531 ethertype_print(netdissect_options *ndo,
532                     u_short ether_type, const u_char *p,
533                     u_int length, u_int caplen,
534                     const struct lladdr_info *src, const struct lladdr_info *dst)
535 {
536           switch (ether_type) {
537 
538           case ETHERTYPE_IP:
539                     ip_print(ndo, p, length);
540                     return (1);
541 
542           case ETHERTYPE_IPV6:
543                     ip6_print(ndo, p, length);
544                     return (1);
545 
546           case ETHERTYPE_ARP:
547           case ETHERTYPE_REVARP:
548                     arp_print(ndo, p, length, caplen);
549                     return (1);
550 
551           case ETHERTYPE_DN:
552                     decnet_print(ndo, p, length, caplen);
553                     return (1);
554 
555           case ETHERTYPE_ATALK:
556                     if (ndo->ndo_vflag)
557                               ND_PRINT("et1 ");
558                     atalk_print(ndo, p, length);
559                     return (1);
560 
561           case ETHERTYPE_AARP:
562                     aarp_print(ndo, p, length);
563                     return (1);
564 
565           case ETHERTYPE_IPX:
566                     ND_PRINT("(NOV-ETHII) ");
567                     ipx_print(ndo, p, length);
568                     return (1);
569 
570           case ETHERTYPE_ISO:
571                     if (length == 0 || caplen == 0) {
572                               ndo->ndo_protocol = "isoclns";
573                               nd_print_trunc(ndo);
574                               return (1);
575                     }
576                     /* At least one byte is required */
577                     /* FIXME: Reference for this byte? */
578                     ND_TCHECK_LEN(p, 1);
579                     isoclns_print(ndo, p + 1, length - 1);
580                     return(1);
581 
582           case ETHERTYPE_PPPOED:
583           case ETHERTYPE_PPPOES:
584           case ETHERTYPE_PPPOED2:
585           case ETHERTYPE_PPPOES2:
586                     pppoe_print(ndo, p, length);
587                     return (1);
588 
589           case ETHERTYPE_EAPOL:
590                     eapol_print(ndo, p);
591                     return (1);
592 
593           case ETHERTYPE_REALTEK:
594                     rtl_print(ndo, p, length, src, dst);
595                     return (1);
596 
597           case ETHERTYPE_PPP:
598                     if (length) {
599                               ND_PRINT(": ");
600                               ppp_print(ndo, p, length);
601                     }
602                     return (1);
603 
604           case ETHERTYPE_MPCP:
605                     mpcp_print(ndo, p, length);
606                     return (1);
607 
608           case ETHERTYPE_SLOW:
609                     slow_print(ndo, p, length);
610                     return (1);
611 
612           case ETHERTYPE_CFM:
613           case ETHERTYPE_CFM_OLD:
614                     cfm_print(ndo, p, length);
615                     return (1);
616 
617           case ETHERTYPE_LLDP:
618                     lldp_print(ndo, p, length);
619                     return (1);
620 
621           case ETHERTYPE_NSH:
622                     nsh_print(ndo, p, length);
623                     return (1);
624 
625           case ETHERTYPE_LOOPBACK:
626                     loopback_print(ndo, p, length);
627                     return (1);
628 
629           case ETHERTYPE_MPLS:
630           case ETHERTYPE_MPLS_MULTI:
631                     mpls_print(ndo, p, length);
632                     return (1);
633 
634           case ETHERTYPE_TIPC:
635                     tipc_print(ndo, p, length, caplen);
636                     return (1);
637 
638           case ETHERTYPE_MS_NLB_HB:
639                     msnlb_print(ndo, p);
640                     return (1);
641 
642           case ETHERTYPE_GEONET_OLD:
643           case ETHERTYPE_GEONET:
644                     geonet_print(ndo, p, length, src);
645                     return (1);
646 
647           case ETHERTYPE_CALM_FAST:
648                     calm_fast_print(ndo, p, length, src);
649                     return (1);
650 
651           case ETHERTYPE_AOE:
652                     aoe_print(ndo, p, length);
653                     return (1);
654 
655           case ETHERTYPE_PTP:
656                     ptp_print(ndo, p, length);
657                     return (1);
658 
659           case ETHERTYPE_LAT:
660           case ETHERTYPE_SCA:
661           case ETHERTYPE_MOPRC:
662           case ETHERTYPE_MOPDL:
663           case ETHERTYPE_IEEE1905_1:
664                     /* default_print for now */
665           default:
666                     return (0);
667           }
668 }
669