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Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-slow.c
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c8cf0f94
PA		 1/*
2 * Copyright (c) 1998-2005 The TCPDUMP project
3 *
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.
14 *
15 * support for the IEEE "slow protocols" LACP, MARKER as per 802.3ad
16 *
17 * Original code by Hannes Gredler (hannes@juniper.net)
18 */
19
20#ifndef lint
21static const char rcsid[] _U_ =
22 "@(#) $Header: /tcpdump/master/tcpdump/print-slow.c,v 1.1.2.1 2005/07/10 14:47:56 hannes Exp $";
23#endif
24
25#ifdef HAVE_CONFIG_H
26#include "config.h"
27#endif
28
29#include <tcpdump-stdinc.h>
30
31#include <stdio.h>
32#include <stdlib.h>
33#include <string.h>
34
35#include "interface.h"
36#include "extract.h"
37#include "addrtoname.h"
38#include "ether.h"
39
40struct slow_common_header {
41 u_int8_t proto_subtype;
42 u_int8_t version;
43};
44
45#define SLOW_PROTO_LACP 1
46#define SLOW_PROTO_MARKER 2
47
48#define LACP_VERSION 1
49#define MARKER_VERSION 1
50
51static const struct tok slow_proto_values[] = {
52 { SLOW_PROTO_LACP, "LACP" },
53 { SLOW_PROTO_MARKER, "MARKER" },
54 { 0, NULL}
55};
56
57struct tlv_header_t {
58 u_int8_t type;
59 u_int8_t length;
60};
61
62#define LACP_TLV_TERMINATOR 0x00
63#define LACP_TLV_ACTOR_INFO 0x01
64#define LACP_TLV_PARTNER_INFO 0x02
65#define LACP_TLV_COLLECTOR_INFO 0x03
66
67#define MARKER_TLV_TERMINATOR 0x00
68#define MARKER_TLV_MARKER_INFO 0x01
69
70static const struct tok slow_tlv_values[] = {
71 { (SLOW_PROTO_LACP << 8) + LACP_TLV_TERMINATOR, "Terminator"},
72 { (SLOW_PROTO_LACP << 8) + LACP_TLV_ACTOR_INFO, "Actor Information"},
73 { (SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO, "Partner Information"},
74 { (SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO, "Collector Information"},
75
76 { (SLOW_PROTO_MARKER << 8) + MARKER_TLV_TERMINATOR, "Terminator"},
77 { (SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO, "Marker Information"},
78 { 0, NULL}
79};
80
81struct lacp_tlv_actor_partner_info_t {
82 u_int8_t sys_pri[2];
83 u_int8_t sys[ETHER_ADDR_LEN];
84 u_int8_t key[2];
85 u_int8_t port_pri[2];
86 u_int8_t port[2];
87 u_int8_t state;
88 u_int8_t pad[3];
89};
90
91static const struct tok lacp_tlv_actor_partner_info_state_values[] = {
92 { 0x01, "Activity"},
93 { 0x02, "Timeout"},
94 { 0x04, "Aggregation"},
95 { 0x08, "Synchronization"},
96 { 0x10, "Collecting"},
97 { 0x20, "Distributing"},
98 { 0x40, "Default"},
99 { 0x80, "Expired"},
100 { 0, NULL}
101};
102
103struct lacp_tlv_collector_info_t {
104 u_int8_t max_delay[2];
105 u_int8_t pad[12];
106};
107
108struct marker_tlv_marker_info_t {
109 u_int8_t req_port[2];
110 u_int8_t req_sys[ETHER_ADDR_LEN];
111 u_int8_t req_trans_id[4];
112 u_int8_t pad[2];
113};
114
115struct lacp_marker_tlv_terminator_t {
116 u_int8_t pad[50];
117};
118
119void
120slow_print(register const u_char *pptr, register u_int len) {
121
122 const struct slow_common_header *slow_com_header;
123 const struct tlv_header_t *tlv_header;
124 const u_char *tptr,*tlv_tptr;
125 u_int tlv_len,tlen,tlv_tlen;
126
127 union {
128 const struct lacp_marker_tlv_terminator_t *lacp_marker_tlv_terminator;
129 const struct lacp_tlv_actor_partner_info_t *lacp_tlv_actor_partner_info;
130 const struct lacp_tlv_collector_info_t *lacp_tlv_collector_info;
131 const struct marker_tlv_marker_info_t *marker_tlv_marker_info;
132 } tlv_ptr;
133
134 tptr=pptr;
135 slow_com_header = (const struct slow_common_header *)pptr;
136 TCHECK(*slow_com_header);
137
138 /*
139 * Sanity checking of the header.
140 */
141 if (slow_com_header->proto_subtype == SLOW_PROTO_LACP &&
142 slow_com_header->version != LACP_VERSION) {
143 printf("LACP version %u packet not supported",slow_com_header->version);
144 return;
145 }
146 if (slow_com_header->proto_subtype == SLOW_PROTO_MARKER &&
147 slow_com_header->version != MARKER_VERSION) {
148 printf("MARKER version %u packet not supported",slow_com_header->version);
149 return;
150 }
151
152 printf("%sv%u, length: %u",
153 tok2str(slow_proto_values, "unknown (%u)",slow_com_header->proto_subtype),
154 slow_com_header->version,
155 len);
156
157 if (!vflag)
158 return;
159
160 /* ok they seem to want to know everything - lets fully decode it */
161 tlen=len-sizeof(struct slow_common_header);
162 tptr+=sizeof(const struct slow_common_header);
163
164 while(tlen>0) {
165 /* did we capture enough for fully decoding the tlv header ? */
166 TCHECK2(*tptr, sizeof(struct tlv_header_t));
167 tlv_header = (const struct tlv_header_t *)tptr;
168 tlv_len = tlv_header->length;
169
170 printf("\n\t%s TLV (0x%02x), length: %u",
171 tok2str(slow_tlv_values,
172 "Unknown",
173 (slow_com_header->proto_subtype << 8) + tlv_header->type),
174 tlv_header->type,
175 tlv_len);
176
177 if ((tlv_len < sizeof(struct tlv_header_t) ||
178 tlv_len > tlen) &&
179 tlv_header->type != LACP_TLV_TERMINATOR &&
180 tlv_header->type != MARKER_TLV_TERMINATOR) {
181 printf("\n\t-----trailing data-----");
182 print_unknown_data(tptr+sizeof(sizeof(struct tlv_header_t)),"\n\t ",tlen);
183 return;
184 }
185
186 tlv_tptr=tptr+sizeof(struct tlv_header_t);
187 tlv_tlen=tlv_len-sizeof(struct tlv_header_t);
188
189 /* did we capture enough for fully decoding the tlv ? */
190 TCHECK2(*tptr, tlv_len);
191
192 switch((slow_com_header->proto_subtype << 8) + tlv_header->type) {
193
194 /* those two TLVs have the same structure -> fall through */
195 case ((SLOW_PROTO_LACP << 8) + LACP_TLV_ACTOR_INFO):
196 case ((SLOW_PROTO_LACP << 8) + LACP_TLV_PARTNER_INFO):
197 tlv_ptr.lacp_tlv_actor_partner_info = (const struct lacp_tlv_actor_partner_info_t *)tlv_tptr;
198
199 printf("\n\t System %s, System Priority %u, Key %u" \
200 ", Port %u, Port Priority %u\n\t State Flags [%s]",
201 etheraddr_string(tlv_ptr.lacp_tlv_actor_partner_info->sys),
202 EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->sys_pri),
203 EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->key),
204 EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port),
205 EXTRACT_16BITS(tlv_ptr.lacp_tlv_actor_partner_info->port_pri),
206 bittok2str(lacp_tlv_actor_partner_info_state_values,
207 "none",
208 tlv_ptr.lacp_tlv_actor_partner_info->state));
209
210 break;
211
212 case ((SLOW_PROTO_LACP << 8) + LACP_TLV_COLLECTOR_INFO):
213 tlv_ptr.lacp_tlv_collector_info = (const struct lacp_tlv_collector_info_t *)tlv_tptr;
214
215 printf("\n\t Max Delay %u",
216 EXTRACT_16BITS(tlv_ptr.lacp_tlv_collector_info->max_delay));
217
218 break;
219
220 case ((SLOW_PROTO_MARKER << 8) + MARKER_TLV_MARKER_INFO):
221 tlv_ptr.marker_tlv_marker_info = (const struct marker_tlv_marker_info_t *)tlv_tptr;
222
223 printf("\n\t Request System %s, Request Port %u, Request Transaction ID 0x%08x",
224 etheraddr_string(tlv_ptr.marker_tlv_marker_info->req_sys),
225 EXTRACT_16BITS(tlv_ptr.marker_tlv_marker_info->req_port),
226 EXTRACT_32BITS(tlv_ptr.marker_tlv_marker_info->req_trans_id));
227
228 break;
229
230 /* those two TLVs have the same structure -> fall through */
231 case ((SLOW_PROTO_LACP << 8) + LACP_TLV_TERMINATOR):
232 case ((SLOW_PROTO_MARKER << 8) + LACP_TLV_TERMINATOR):
233 tlv_ptr.lacp_marker_tlv_terminator = (const struct lacp_marker_tlv_terminator_t *)tlv_tptr;
234 if (tlv_len == 0) {
235 tlv_len = sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad) +
236 sizeof(struct tlv_header_t);
237 /* tell the user that we modified the length field */
238 if (vflag>1)
239 printf(" (=%u)",tlv_len);
240 /* we have messed around with the length field - now we need to check
241 * again if there are enough bytes on the wire for the hexdump */
242 TCHECK2(tlv_ptr.lacp_marker_tlv_terminator->pad[0],
243 sizeof(tlv_ptr.lacp_marker_tlv_terminator->pad));
244 }
245
246 break;
247
248 default:
249 if (vflag <= 1)
250 print_unknown_data(tlv_tptr,"\n\t ",tlv_tlen);
251 break;
252 }
253 /* do we want to see an additionally hexdump ? */
254 if (vflag > 1)
255 print_unknown_data(tptr+sizeof(sizeof(struct tlv_header_t)),"\n\t ",
256 tlv_len-sizeof(struct tlv_header_t));
257
258 tptr+=tlv_len;
259 tlen-=tlv_len;
260 }
261 return;
262trunc:
263 printf("\n\t\t packet exceeded snapshot");
264}
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