2 * Routines for RX packet dissection
3 * Copyright 1999, Nathan Neulinger <nneul@umr.edu>
4 * Based on routines from tcpdump patches by
5 * Ken Hornstein <kenh@cmf.nrl.navy.mil>
7 * $Id: packet-rx.c,v 1.35 2002/04/14 23:22:21 guy Exp $
9 * Ethereal - Network traffic analyzer
10 * By Gerald Combs <gerald@ethereal.com>
11 * Copyright 1998 Gerald Combs
13 * Copied from packet-tftp.c
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version 2
18 * of the License, or (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
36 #ifdef HAVE_SYS_TYPES_H
37 # include <sys/types.h>
40 #ifdef HAVE_NETINET_IN_H
41 # include <netinet/in.h>
46 #include <epan/packet.h>
47 #include "packet-rx.h"
48 #include <epan/resolv.h>
50 #define UDP_PORT_RX_LOW 7000
51 #define UDP_PORT_RX_HIGH 7009
52 #define UDP_PORT_RX_AFS_BACKUPS 7021
54 static const value_string rx_types[] = {
55 { RX_PACKET_TYPE_DATA, "data" },
56 { RX_PACKET_TYPE_ACK, "ack" },
57 { RX_PACKET_TYPE_BUSY, "busy" },
58 { RX_PACKET_TYPE_ABORT, "abort" },
59 { RX_PACKET_TYPE_ACKALL, "ackall" },
60 { RX_PACKET_TYPE_CHALLENGE, "challenge" },
61 { RX_PACKET_TYPE_RESPONSE, "response" },
62 { RX_PACKET_TYPE_DEBUG, "debug" },
63 { RX_PACKET_TYPE_PARAMS, "params" },
64 { RX_PACKET_TYPE_VERSION, "version" },
68 static const value_string rx_flags[] = {
69 { RX_CLIENT_INITIATED, "client-init" },
70 { RX_REQUEST_ACK, "req-ack" },
71 { RX_LAST_PACKET, "last-pckt" },
72 { RX_MORE_PACKETS, "more-pckts" },
73 { RX_FREE_PACKET, "free-pckt" },
74 { RX_SLOW_START_OR_JUMBO, "slow-start/jumbogram" },
78 static const value_string rx_reason[] = {
79 { RX_ACK_REQUESTED, "Ack Requested" },
80 { RX_ACK_DUPLICATE, "Duplicate Packet" },
81 { RX_ACK_OUT_OF_SEQUENCE, "Out Of Sequence" },
82 { RX_ACK_EXEEDS_WINDOW, "Exceeds Window" },
83 { RX_ACK_NOSPACE, "No Space" },
84 { RX_ACK_PING, "Ping" },
85 { RX_ACK_PING_RESPONSE, "Ping Response" },
86 { RX_ACK_DELAY, "Delay" },
87 { RX_ACK_IDLE, "Idle" },
91 static const value_string rx_ack_type[] = {
92 { RX_ACK_TYPE_NACK, "NACK" },
93 { RX_ACK_TYPE_ACK, "ACK" },
97 static int proto_rx = -1;
98 static int hf_rx_epoch = -1;
99 static int hf_rx_cid = -1;
100 static int hf_rx_seq = -1;
101 static int hf_rx_serial = -1;
102 static int hf_rx_callnumber = -1;
103 static int hf_rx_type = -1;
104 static int hf_rx_flags = -1;
105 static int hf_rx_flags_clientinit = -1;
106 static int hf_rx_flags_request_ack = -1;
107 static int hf_rx_flags_last_packet = -1;
108 static int hf_rx_flags_more_packets = -1;
109 static int hf_rx_flags_free_packet = -1;
110 static int hf_rx_userstatus = -1;
111 static int hf_rx_securityindex = -1;
112 static int hf_rx_spare = -1;
113 static int hf_rx_serviceid = -1;
114 static int hf_rx_bufferspace = -1;
115 static int hf_rx_maxskew = -1;
116 static int hf_rx_first_packet = -1;
117 static int hf_rx_prev_packet = -1;
118 static int hf_rx_reason = -1;
119 static int hf_rx_numacks = -1;
120 static int hf_rx_ack_type = -1;
121 static int hf_rx_ack = -1;
122 static int hf_rx_challenge = -1;
123 static int hf_rx_version = -1;
124 static int hf_rx_nonce = -1;
125 static int hf_rx_inc_nonce = -1;
126 static int hf_rx_min_level = -1;
127 static int hf_rx_level = -1;
128 static int hf_rx_response = -1;
129 static int hf_rx_encrypted = -1;
130 static int hf_rx_kvno = -1;
131 static int hf_rx_ticket_len = -1;
132 static int hf_rx_ticket = -1;
133 static int hf_rx_ifmtu = -1;
134 static int hf_rx_maxmtu = -1;
135 static int hf_rx_rwind = -1;
136 static int hf_rx_maxpackets = -1;
137 static int hf_rx_abort = -1;
138 static int hf_rx_abortcode = -1;
140 static gint ett_rx = -1;
141 static gint ett_rx_flags = -1;
142 static gint ett_rx_ack = -1;
143 static gint ett_rx_challenge = -1;
144 static gint ett_rx_response = -1;
145 static gint ett_rx_encrypted = -1;
146 static gint ett_rx_abort = -1;
148 static dissector_handle_t afs_handle;
151 dissect_rx_response_encrypted(tvbuff_t *tvb, proto_tree *parent_tree, int offset)
155 int old_offset=offset;
159 item = proto_tree_add_item(parent_tree, hf_rx_encrypted, tvb, offset, -1, FALSE);
160 tree = proto_item_add_subtree(item, ett_rx_encrypted);
162 /* epoch : 4 bytes */
165 ts.secs = tvb_get_ntohl(tvb, offset);
168 proto_tree_add_time(tree, hf_rx_epoch, tvb,
174 proto_tree_add_item(tree, hf_rx_cid, tvb, offset, 4, FALSE);
177 /*FIXME dont know how to handle this checksum, skipping it */
180 /* sequrityindex : 1 byte */
181 proto_tree_add_item(tree, hf_rx_securityindex, tvb, offset, 1, FALSE);
184 for (i=0; i<RX_MAXCALLS; i++) {
185 /* callnumber : 4 bytes */
186 callnumber = tvb_get_ntohl(tvb, offset);
187 proto_tree_add_uint(tree, hf_rx_callnumber, tvb,
188 offset, 4, callnumber);
192 /* inc nonce : 4 bytes */
193 proto_tree_add_item(tree, hf_rx_inc_nonce, tvb, offset, 4, FALSE);
196 /* level : 4 bytes */
197 proto_tree_add_item(tree, hf_rx_level, tvb, offset, 4, FALSE);
200 proto_item_set_len(item, offset-old_offset);
206 dissect_rx_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset, guint32 seq, guint32 callnumber)
211 int old_offset=offset;
213 if (check_col(pinfo->cinfo, COL_INFO)) {
214 col_add_fstr(pinfo->cinfo, COL_INFO,
219 "Destination Port: %s ",
221 (unsigned long)callnumber,
222 get_udp_port(pinfo->srcport),
223 get_udp_port(pinfo->destport)
227 item = proto_tree_add_item(parent_tree, hf_rx_response, tvb, offset, -1, FALSE);
228 tree = proto_item_add_subtree(item, ett_rx_response);
230 version = tvb_get_ntohl(tvb, offset);
231 proto_tree_add_uint(tree, hf_rx_version, tvb,
239 /* encrypted : struct */
240 offset = dissect_rx_response_encrypted(tvb, tree, offset);
243 proto_tree_add_item(tree, hf_rx_kvno, tvb, offset, 4, FALSE);
247 tl = tvb_get_ntohl(tvb, offset);
248 proto_tree_add_uint(tree, hf_rx_ticket_len, tvb,
252 proto_tree_add_item(tree, hf_rx_ticket, tvb, offset, tl, FALSE);
256 proto_item_set_len(item, offset-old_offset);
261 dissect_rx_abort(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset, guint32 seq, guint32 callnumber)
265 int old_offset=offset;
267 if (check_col(pinfo->cinfo, COL_INFO)) {
268 col_add_fstr(pinfo->cinfo, COL_INFO,
273 "Destination Port: %s ",
275 (unsigned long)callnumber,
276 get_udp_port(pinfo->srcport),
277 get_udp_port(pinfo->destport)
281 item = proto_tree_add_item(parent_tree, hf_rx_abort, tvb, offset, -1, FALSE);
282 tree = proto_item_add_subtree(item, ett_rx_abort);
285 proto_tree_add_item(tree, hf_rx_abortcode, tvb, offset, 4, FALSE);
288 proto_item_set_len(item, offset-old_offset);
294 dissect_rx_challenge(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset, guint32 seq, guint32 callnumber)
299 int old_offset=offset;
301 if (check_col(pinfo->cinfo, COL_INFO)) {
302 col_add_fstr(pinfo->cinfo, COL_INFO,
307 "Destination Port: %s ",
309 (unsigned long)callnumber,
310 get_udp_port(pinfo->srcport),
311 get_udp_port(pinfo->destport)
315 item = proto_tree_add_item(parent_tree, hf_rx_challenge, tvb, offset, -1, FALSE);
316 tree = proto_item_add_subtree(item, ett_rx_challenge);
318 version = tvb_get_ntohl(tvb, offset);
319 proto_tree_add_uint(tree, hf_rx_version, tvb,
324 proto_tree_add_item(tree, hf_rx_nonce, tvb, offset, 4, FALSE);
327 proto_tree_add_item(tree, hf_rx_min_level, tvb, offset, 4, FALSE);
331 proto_item_set_len(item, offset-old_offset);
336 dissect_rx_acks(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, int offset, guint32 seq, guint32 callnumber)
341 int old_offset = offset;
343 if (check_col(pinfo->cinfo, COL_INFO)) {
344 col_add_fstr(pinfo->cinfo, COL_INFO,
349 "Destination Port: %s ",
351 (unsigned long)callnumber,
352 get_udp_port(pinfo->srcport),
353 get_udp_port(pinfo->destport)
357 item = proto_tree_add_item(parent_tree, hf_rx_ack, tvb, offset, -1, FALSE);
358 tree = proto_item_add_subtree(item, ett_rx_ack);
361 /* bufferspace: 2 bytes*/
362 proto_tree_add_item(tree, hf_rx_bufferspace, tvb, offset, 2, FALSE);
365 /* maxskew: 2 bytes*/
366 proto_tree_add_item(tree, hf_rx_maxskew, tvb, offset, 2, FALSE);
369 /* first packet: 4 bytes*/
370 proto_tree_add_item(tree, hf_rx_first_packet, tvb, offset, 4, FALSE);
373 /* prev packet: 4 bytes*/
374 proto_tree_add_item(tree, hf_rx_prev_packet, tvb, offset, 4, FALSE);
377 /* serial : 4 bytes */
378 proto_tree_add_item(tree, hf_rx_serial, tvb, offset, 4, FALSE);
381 /* reason : 1 byte */
382 proto_tree_add_item(tree, hf_rx_reason, tvb, offset, 1, FALSE);
386 num = tvb_get_guint8(tvb, offset);
387 proto_tree_add_uint(tree, hf_rx_numacks, tvb, offset, 1, num);
391 proto_tree_add_item(tree, hf_rx_ack_type, tvb, offset, 1,
396 /* Some implementations adds some extra fields.
397 * As far as I can see, these first add 3 padding bytes and then
398 * up to 4 32-bit values. (0,3,4 have been witnessed)
400 * RX as a protocol seems to be completely nondefined and seems to lack
401 * any sort of documentation other than "read the source of any of the
402 * (compatible?) implementations.
404 if (tvb_length_remaining(tvb, offset)>3) {
405 offset += 3; /* guess. some implementations adds 3 bytes */
407 if (tvb_reported_length_remaining(tvb, offset) >= 4){
408 proto_tree_add_item(tree, hf_rx_ifmtu, tvb, offset, 4,
412 if (tvb_reported_length_remaining(tvb, offset) >= 4){
413 proto_tree_add_item(tree, hf_rx_maxmtu, tvb, offset, 4,
417 if (tvb_reported_length_remaining(tvb, offset) >= 4){
418 proto_tree_add_item(tree, hf_rx_rwind, tvb, offset, 4,
422 if (tvb_reported_length_remaining(tvb, offset) >= 4){
423 proto_tree_add_item(tree, hf_rx_maxpackets, tvb, offset, 4,
429 proto_item_set_len(item, offset-old_offset);
435 dissect_rx_flags(tvbuff_t *tvb, struct rxinfo *rxinfo, proto_tree *parent_tree, int offset)
441 flags = tvb_get_guint8(tvb, offset);
442 rxinfo->flags = flags;
444 item = proto_tree_add_uint(parent_tree, hf_rx_flags, tvb,
446 tree = proto_item_add_subtree(item, ett_rx_flags);
448 proto_tree_add_uint(tree, hf_rx_flags_free_packet, tvb,
450 proto_tree_add_uint(tree, hf_rx_flags_more_packets, tvb,
452 proto_tree_add_uint(tree, hf_rx_flags_last_packet, tvb,
454 proto_tree_add_uint(tree, hf_rx_flags_request_ack, tvb,
456 proto_tree_add_uint(tree, hf_rx_flags_clientinit, tvb,
464 dissect_rx(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree)
469 struct rxinfo rxinfo;
471 guint32 seq, callnumber;
474 if (check_col(pinfo->cinfo, COL_PROTOCOL))
475 col_set_str(pinfo->cinfo, COL_PROTOCOL, "RX");
476 if (check_col(pinfo->cinfo, COL_INFO))
477 col_clear(pinfo->cinfo, COL_INFO);
479 item = proto_tree_add_protocol_format(parent_tree, proto_rx, tvb,
480 offset, 28, "RX Protocol");
481 tree = proto_item_add_subtree(item, ett_rx);
483 /* epoch : 4 bytes */
486 ts.secs = tvb_get_ntohl(tvb, offset);
489 proto_tree_add_time(tree, hf_rx_epoch, tvb,
495 proto_tree_add_item(tree, hf_rx_cid, tvb, offset, 4, FALSE);
498 /* callnumber : 4 bytes */
499 callnumber = tvb_get_ntohl(tvb, offset);
500 proto_tree_add_uint(tree, hf_rx_callnumber, tvb,
501 offset, 4, callnumber);
503 rxinfo.callnumber = callnumber;
506 seq = tvb_get_ntohl(tvb, offset);
507 proto_tree_add_uint(tree, hf_rx_seq, tvb,
512 /* serial : 4 bytes */
513 proto_tree_add_item(tree, hf_rx_serial, tvb, offset, 4, FALSE);
517 type = tvb_get_guint8(tvb, offset);
518 proto_tree_add_uint(tree, hf_rx_type, tvb,
524 offset = dissect_rx_flags(tvb, &rxinfo, tree, offset);
526 /* userstatus : 1 byte */
527 proto_tree_add_item(tree, hf_rx_userstatus, tvb, offset, 1, FALSE);
530 /* sequrityindex : 1 byte */
531 proto_tree_add_item(tree, hf_rx_securityindex, tvb, offset, 1, FALSE);
535 * How clever: even though the AFS header files indicate that the
536 * serviceId is first, it's really encoded _after_ the spare field.
537 * I wasted a day figuring that out!
541 proto_tree_add_item(tree, hf_rx_spare, tvb, offset, 2, FALSE);
544 /* service id : 2 bytes */
545 serviceid = tvb_get_ntohs(tvb, offset);
546 proto_tree_add_uint(tree, hf_rx_serviceid, tvb,
547 offset, 2, serviceid);
549 rxinfo.serviceid = serviceid;
552 case RX_PACKET_TYPE_ACK:
553 /*dissect_rx_acks(tvb, pinfo, parent_tree, offset,
554 cant create it in a parallell tree, then ett seasrch
556 dissect_rx_acks(tvb, pinfo, tree, offset,
559 case RX_PACKET_TYPE_ACKALL:
560 /* does not contain any payload */
561 if (check_col(pinfo->cinfo, COL_INFO)) {
562 col_add_fstr(pinfo->cinfo, COL_INFO,
567 "Destination Port: %s ",
569 (unsigned long)callnumber,
570 get_udp_port(pinfo->srcport),
571 get_udp_port(pinfo->destport)
575 case RX_PACKET_TYPE_CHALLENGE:
576 dissect_rx_challenge(tvb, pinfo, tree, offset, seq, callnumber);
578 case RX_PACKET_TYPE_RESPONSE:
579 dissect_rx_response(tvb, pinfo, tree, offset, seq, callnumber);
581 case RX_PACKET_TYPE_DATA: {
583 pinfo->private_data = &rxinfo;
584 next_tvb = tvb_new_subset(tvb, offset, -1, -1);
585 call_dissector(afs_handle, next_tvb, pinfo, parent_tree);
588 case RX_PACKET_TYPE_ABORT:
589 dissect_rx_abort(tvb, pinfo, tree, offset, seq, callnumber);
596 proto_register_rx(void)
598 static hf_register_info hf[] = {
600 "Epoch", "rx.epoch", FT_ABSOLUTE_TIME, BASE_DEC,
601 NULL, 0, "Epoch", HFILL }},
604 "CID", "rx.cid", FT_UINT32, BASE_DEC,
605 NULL, 0, "CID", HFILL }},
607 { &hf_rx_callnumber, {
608 "Call Number", "rx.callnumber", FT_UINT32, BASE_DEC,
609 NULL, 0, "Call Number", HFILL }},
612 "Sequence Number", "rx.seq", FT_UINT32, BASE_DEC,
613 NULL, 0, "Sequence Number", HFILL }},
616 "Serial", "rx.serial", FT_UINT32, BASE_DEC,
617 NULL, 0, "Serial", HFILL }},
620 "Type", "rx.type", FT_UINT8, BASE_DEC,
621 VALS(rx_types), 0, "Type", HFILL }},
624 "Flags", "rx.flags", FT_UINT8, BASE_HEX,
625 NULL, 0, "Flags", HFILL }},
627 { &hf_rx_flags_clientinit, {
628 "Client Initiated", "rx.flags.client_init", FT_UINT8, BASE_BIN,
629 NULL, RX_CLIENT_INITIATED, "Client Initiated", HFILL }},
631 { &hf_rx_flags_request_ack, {
632 "Request Ack", "rx.flags.request_ack", FT_UINT8, BASE_BIN,
633 NULL, RX_REQUEST_ACK, "Request Ack", HFILL }},
635 { &hf_rx_flags_last_packet, {
636 "Last Packet", "rx.flags.last_packet", FT_UINT8, BASE_BIN,
637 NULL, RX_LAST_PACKET, "Last Packet", HFILL }},
639 { &hf_rx_flags_more_packets, {
640 "More Packets", "rx.flags.more_packets", FT_UINT8, BASE_BIN,
641 NULL, RX_MORE_PACKETS, "More Packets", HFILL }},
643 { &hf_rx_flags_free_packet, {
644 "Free Packet", "rx.flags.free_packet", FT_UINT8, BASE_BIN,
645 NULL, RX_FREE_PACKET, "Free Packet", HFILL }},
647 { &hf_rx_userstatus, {
648 "User Status", "rx.userstatus", FT_UINT32, BASE_DEC,
649 NULL, 0, "User Status", HFILL }},
651 { &hf_rx_securityindex, {
652 "Security Index", "rx.securityindex", FT_UINT32, BASE_DEC,
653 NULL, 0, "Security Index", HFILL }},
656 "Spare/Checksum", "rx.spare", FT_UINT16, BASE_DEC,
657 NULL, 0, "Spare/Checksum", HFILL }},
659 { &hf_rx_serviceid, {
660 "Service ID", "rx.serviceid", FT_UINT16, BASE_DEC,
661 NULL, 0, "Service ID", HFILL }},
663 { &hf_rx_bufferspace, {
664 "Bufferspace", "rx.bufferspace", FT_UINT16, BASE_DEC,
665 NULL, 0, "Number Of Packets Available", HFILL }},
668 "Max Skew", "rx.maxskew", FT_UINT16, BASE_DEC,
669 NULL, 0, "Max Skew", HFILL }},
671 { &hf_rx_first_packet, {
672 "First Packet", "rx.first", FT_UINT32, BASE_DEC,
673 NULL, 0, "First Packet", HFILL }},
675 { &hf_rx_prev_packet, {
676 "Prev Packet", "rx.prev", FT_UINT32, BASE_DEC,
677 NULL, 0, "Previous Packet", HFILL }},
680 "Reason", "rx.reason", FT_UINT8, BASE_DEC,
681 VALS(rx_reason), 0, "Reason For This ACK", HFILL }},
684 "Num ACKs", "rx.num_acks", FT_UINT8, BASE_DEC,
685 NULL, 0, "Number Of ACKs", HFILL }},
688 "ACK Type", "rx.ack_type", FT_UINT8, BASE_DEC,
689 VALS(rx_ack_type), 0, "Type Of ACKs", HFILL }},
692 "ACK Packet", "rx.ack", FT_NONE, BASE_NONE,
693 NULL, 0, "ACK Packet", HFILL }},
695 { &hf_rx_challenge, {
696 "CHALLENGE Packet", "rx.challenge", FT_NONE, BASE_NONE,
697 NULL, 0, "CHALLENGE Packet", HFILL }},
700 "Version", "rx.version", FT_UINT32, BASE_DEC,
701 NULL, 0, "Version Of Challenge/Response", HFILL }},
704 "Nonce", "rx.nonce", FT_UINT32, BASE_HEX,
705 NULL, 0, "Nonce", HFILL }},
707 { &hf_rx_inc_nonce, {
708 "Inc Nonce", "rx.inc_nonce", FT_UINT32, BASE_HEX,
709 NULL, 0, "Incremented Nonce", HFILL }},
711 { &hf_rx_min_level, {
712 "Min Level", "rx.min_level", FT_UINT32, BASE_DEC,
713 NULL, 0, "Min Level", HFILL }},
716 "Level", "rx.level", FT_UINT32, BASE_DEC,
717 NULL, 0, "Level", HFILL }},
720 "RESPONSE Packet", "rx.response", FT_NONE, BASE_NONE,
721 NULL, 0, "RESPONSE Packet", HFILL }},
724 "ABORT Packet", "rx.abort", FT_NONE, BASE_NONE,
725 NULL, 0, "ABORT Packet", HFILL }},
727 { &hf_rx_encrypted, {
728 "Encrypted", "rx.encrypted", FT_NONE, BASE_NONE,
729 NULL, 0, "Encrypted part of response packet", HFILL }},
732 "kvno", "rx.kvno", FT_UINT32, BASE_DEC,
733 NULL, 0, "kvno", HFILL }},
735 { &hf_rx_ticket_len, {
736 "Ticket len", "rx.ticket_len", FT_UINT32, BASE_DEC,
737 NULL, 0, "Ticket Length", HFILL }},
740 "ticket", "rx.ticket", FT_BYTES, BASE_HEX,
741 NULL, 0, "Ticket", HFILL }},
744 "Interface MTU", "rx.if_mtu", FT_UINT32, BASE_DEC,
745 NULL, 0, "Interface MTU", HFILL }},
748 "Max MTU", "rx.max_mtu", FT_UINT32, BASE_DEC,
749 NULL, 0, "Max MTU", HFILL }},
752 "rwind", "rx.rwind", FT_UINT32, BASE_DEC,
753 NULL, 0, "rwind", HFILL }},
755 { &hf_rx_maxpackets, {
756 "Max Packets", "rx.max_packets", FT_UINT32, BASE_DEC,
757 NULL, 0, "Max Packets", HFILL }},
759 { &hf_rx_abortcode, {
760 "Abort Code", "rx.abort_code", FT_UINT32, BASE_DEC,
761 NULL, 0, "Abort Code", HFILL }},
764 static gint *ett[] = {
774 proto_rx = proto_register_protocol("RX Protocol", "RX", "rx");
775 proto_register_field_array(proto_rx, hf, array_length(hf));
776 proto_register_subtree_array(ett, array_length(ett));
780 proto_reg_handoff_rx(void)
782 dissector_handle_t rx_handle;
787 * Get handle for the AFS dissector.
789 afs_handle = find_dissector("afs");
791 /* Ports in the range UDP_PORT_RX_LOW to UDP_PORT_RX_HIGH
792 are all used for various AFS services. */
793 rx_handle = create_dissector_handle(dissect_rx, proto_rx);
794 for (port = UDP_PORT_RX_LOW; port <= UDP_PORT_RX_HIGH; port++)
795 dissector_add("udp.port", port, rx_handle);
796 dissector_add("udp.port", UDP_PORT_RX_AFS_BACKUPS, rx_handle);