2 * Copyright (c) 1998-2006 The TCPDUMP project
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that: (1) source code
6 * distributions retain the above copyright notice and this paragraph
7 * in its entirety, and (2) distributions including binary code include
8 * the above copyright notice and this paragraph in its entirety in
9 * the documentation or other materials provided with the distribution.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
13 * FOR A PARTICULAR PURPOSE.
15 * support for the IEEE MPCP protocol as per 802.3ah
17 * Original code by Hannes Gredler (hannes@juniper.net)
21 static const char rcsid[] _U_ =
22 "@(#) $Header: /tcpdump/master/tcpdump/print-mpcp.c,v 1.2 2006-02-10 17:24:55 hannes Exp $";
29 #include <tcpdump-stdinc.h>
35 #include "interface.h"
37 #include "addrtoname.h"
40 #define MPCP_TIMESTAMP_LEN 4
41 #define MPCP_TIMESTAMP_DURATION_LEN 2
43 struct mpcp_common_header_t {
45 u_int8_t timestamp[MPCP_TIMESTAMP_LEN];
48 #define MPCP_OPCODE_PAUSE 0x0001
49 #define MPCP_OPCODE_GATE 0x0002
50 #define MPCP_OPCODE_REPORT 0x0003
51 #define MPCP_OPCODE_REG_REQ 0x0004
52 #define MPCP_OPCODE_REG 0x0005
53 #define MPCP_OPCODE_REG_ACK 0x0006
55 static const struct tok mpcp_opcode_values[] = {
56 { MPCP_OPCODE_PAUSE, "Pause" },
57 { MPCP_OPCODE_GATE, "Gate" },
58 { MPCP_OPCODE_REPORT, "Report" },
59 { MPCP_OPCODE_REG_REQ, "Register Request" },
60 { MPCP_OPCODE_REG, "Register" },
61 { MPCP_OPCODE_REG_ACK, "Register ACK" },
65 #define MPCP_GRANT_NUMBER_LEN 1
66 #define MPCP_GRANT_NUMBER_MASK 0x7
67 static const struct tok mpcp_grant_flag_values[] = {
68 { 0x08, "Discovery" },
69 { 0x10, "Force Grant #1" },
70 { 0x20, "Force Grant #2" },
71 { 0x40, "Force Grant #3" },
72 { 0x80, "Force Grant #4" },
77 u_int8_t starttime[MPCP_TIMESTAMP_LEN];
78 u_int8_t duration[MPCP_TIMESTAMP_DURATION_LEN];
81 struct mpcp_reg_req_t {
83 u_int8_t pending_grants;
87 static const struct tok mpcp_reg_req_flag_values[] = {
94 u_int8_t assigned_port[2];
96 u_int8_t sync_time[MPCP_TIMESTAMP_DURATION_LEN];
97 u_int8_t echoed_pending_grants;
100 static const struct tok mpcp_reg_flag_values[] = {
101 { 1, "Re-Register" },
102 { 2, "De-Register" },
108 #define MPCP_REPORT_QUEUESETS_LEN 1
109 #define MPCP_REPORT_REPORTBITMAP_LEN 1
110 static const struct tok mpcp_report_bitmap_values[] = {
122 struct mpcp_reg_ack_t {
124 u_int8_t echoed_assigned_port[2];
125 u_int8_t echoed_sync_time[MPCP_TIMESTAMP_DURATION_LEN];
128 static const struct tok mpcp_reg_ack_flag_values[] = {
135 mpcp_print(register const u_char *pptr, register u_int length) {
138 const struct mpcp_common_header_t *common_header;
139 const struct mpcp_grant_t *grant;
140 const struct mpcp_reg_req_t *reg_req;
141 const struct mpcp_reg_t *reg;
142 const struct mpcp_reg_ack_t *reg_ack;
148 u_int8_t grant_numbers, grant;
149 u_int8_t queue_sets, queue_set, report_bitmap, report;
152 mpcp.common_header = (const struct mpcp_common_header_t *)pptr;
154 if (!TTEST2(*tptr, sizeof(const struct mpcp_common_header_t)))
156 opcode = EXTRACT_16BITS(mpcp.common_header->opcode);
157 printf("MPCP, Opcode %s", tok2str(mpcp_opcode_values, "Unknown (%u)", opcode));
158 if (opcode != MPCP_OPCODE_PAUSE) {
159 printf(", Timestamp %u ticks", EXTRACT_32BITS(mpcp.common_header->timestamp));
161 printf(", length %u", length);
166 tptr += sizeof(const struct mpcp_common_header_t);
169 case MPCP_OPCODE_PAUSE:
172 case MPCP_OPCODE_GATE:
173 if (!TTEST2(*tptr, MPCP_GRANT_NUMBER_LEN))
175 grant_numbers = *tptr & MPCP_GRANT_NUMBER_MASK;
176 printf("\n\tGrant Numbers %u, Flags [ %s ]",
178 bittok2str(mpcp_grant_flag_values,
180 *tptr &~ MPCP_GRANT_NUMBER_MASK));
183 for (grant = 1; grant <= grant_numbers; grant++) {
184 if (!TTEST2(*tptr, sizeof(const struct mpcp_grant_t)))
186 mpcp.grant = (const struct mpcp_grant_t *)tptr;
187 printf("\n\tGrant #%u, Start-Time %u ticks, duration %u ticks",
189 EXTRACT_32BITS(mpcp.grant->starttime),
190 EXTRACT_16BITS(mpcp.grant->duration));
191 tptr += sizeof(const struct mpcp_grant_t);
194 if (!TTEST2(*tptr, MPCP_TIMESTAMP_DURATION_LEN))
196 printf("\n\tSync-Time %u ticks", EXTRACT_16BITS(tptr));
200 case MPCP_OPCODE_REPORT:
201 if (!TTEST2(*tptr, MPCP_REPORT_QUEUESETS_LEN))
204 tptr+=MPCP_REPORT_QUEUESETS_LEN;
205 printf("\n\tTotal Queue-Sets %u", queue_sets);
207 for (queue_set = 1; queue_set < queue_sets; queue_set++) {
208 if (!TTEST2(*tptr, MPCP_REPORT_REPORTBITMAP_LEN))
210 report_bitmap = *(tptr);
211 printf("\n\t Queue-Set #%u, Report-Bitmap [ %s ]",
213 bittok2str(mpcp_report_bitmap_values, "Unknown", report_bitmap));
217 while (report_bitmap != 0) {
218 if (report_bitmap & 1) {
219 if (!TTEST2(*tptr, MPCP_TIMESTAMP_DURATION_LEN))
221 printf("\n\t Q%u Report, Duration %u ticks",
223 EXTRACT_16BITS(tptr));
224 tptr+=MPCP_TIMESTAMP_DURATION_LEN;
227 report_bitmap = report_bitmap >> 1;
232 case MPCP_OPCODE_REG_REQ:
233 if (!TTEST2(*tptr, sizeof(const struct mpcp_reg_req_t)))
235 mpcp.reg_req = (const struct mpcp_reg_req_t *)tptr;
236 printf("\n\tFlags [ %s ], Pending-Grants %u",
237 bittok2str(mpcp_reg_req_flag_values, "Reserved", mpcp.reg_req->flags),
238 mpcp.reg_req->pending_grants);
241 case MPCP_OPCODE_REG:
242 if (!TTEST2(*tptr, sizeof(const struct mpcp_reg_t)))
244 mpcp.reg = (const struct mpcp_reg_t *)tptr;
245 printf("\n\tAssigned-Port %u, Flags [ %s ]" \
246 "\n\tSync-Time %u ticks, Echoed-Pending-Grants %u",
247 EXTRACT_16BITS(mpcp.reg->assigned_port),
248 bittok2str(mpcp_reg_flag_values, "Reserved", mpcp.reg->flags),
249 EXTRACT_16BITS(mpcp.reg->sync_time),
250 mpcp.reg->echoed_pending_grants);
253 case MPCP_OPCODE_REG_ACK:
254 if (!TTEST2(*tptr, sizeof(const struct mpcp_reg_ack_t)))
256 mpcp.reg_ack = (const struct mpcp_reg_ack_t *)tptr;
257 printf("\n\tEchoed-Assigned-Port %u, Flags [ %s ]" \
258 "\n\tEchoed-Sync-Time %u ticks",
259 EXTRACT_16BITS(mpcp.reg_ack->echoed_assigned_port),
260 bittok2str(mpcp_reg_ack_flag_values, "Reserved", mpcp.reg_ack->flags),
261 EXTRACT_16BITS(mpcp.reg_ack->echoed_sync_time));
265 /* unknown opcode - hexdump for now */
266 print_unknown_data(pptr, "\n\t", length);
273 printf("\n\t[|MPCP]");