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1 office 1 /*
2 * This module implements decoding of OpenFlow protocol version 1.0 (wire
3 * protocol 0x01). The decoder implements terse (default), detailed (-v) and
4 * full (-vv) output formats and, as much as each format implies, detects and
5 * tries to work around sizing anomalies inside the messages. The decoder marks
6 * up bogus values of selected message fields and decodes partially captured
7 * messages up to the snapshot end. It is based on the specification below:
8 *
9 * [OF10] http://www.openflow.org/documents/openflow-spec-v1.0.0.pdf
10 *
11 * Most functions in this file take 3 arguments into account:
12 * * cp -- the pointer to the first octet to decode
13 * * len -- the length of the current structure as declared on the wire
14 * * ep -- the pointer to the end of the captured frame
15 * They return either the pointer to the next not-yet-decoded part of the frame
16 * or the value of ep, which means the current frame processing is over as it
17 * has been fully decoded or is malformed or truncated. This way it is possible
18 * to chain and nest such functions uniformly to decode an OF1.0 message, which
19 * consists of several layers of nested structures.
20 *
21 * Decoding of Ethernet frames nested in OFPT_PACKET_IN and OFPT_PACKET_OUT
22 * messages is done only when the verbosity level set by command-line argument
23 * is "-vvv" or higher. In that case the verbosity level is temporarily
24 * decremented by 3 during the nested frame decoding. For example, running
25 * tcpdump with "-vvvv" will do full decoding of OpenFlow and "-v" decoding of
26 * the nested frames.
27 *
28 * Partial decoding of Big Switch Networks vendor extensions is done after the
29 * oftest (OpenFlow Testing Framework) and Loxigen (library generator) source
30 * code.
31 *
32 *
33 * Copyright (c) 2013 The TCPDUMP project
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
46 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
47 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
48 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
49 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
51 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
52 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
53 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
55 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
56 * POSSIBILITY OF SUCH DAMAGE.
57 */
58  
59 #define NETDISSECT_REWORKED
60 #ifdef HAVE_CONFIG_H
61 #include "config.h"
62 #endif
63  
64 #include <tcpdump-stdinc.h>
65  
66 #include "interface.h"
67 #include "extract.h"
68 #include "addrtoname.h"
69 #include "ether.h"
70 #include "ethertype.h"
71 #include "ipproto.h"
72 #include "oui.h"
73 #include "openflow.h"
74  
75 static const char tstr[] = " [|openflow]";
76 static const char cstr[] = " (corrupt)";
77  
78 #define OFPT_HELLO 0x00
79 #define OFPT_ERROR 0x01
80 #define OFPT_ECHO_REQUEST 0x02
81 #define OFPT_ECHO_REPLY 0x03
82 #define OFPT_VENDOR 0x04
83 #define OFPT_FEATURES_REQUEST 0x05
84 #define OFPT_FEATURES_REPLY 0x06
85 #define OFPT_GET_CONFIG_REQUEST 0x07
86 #define OFPT_GET_CONFIG_REPLY 0x08
87 #define OFPT_SET_CONFIG 0x09
88 #define OFPT_PACKET_IN 0x0a
89 #define OFPT_FLOW_REMOVED 0x0b
90 #define OFPT_PORT_STATUS 0x0c
91 #define OFPT_PACKET_OUT 0x0d
92 #define OFPT_FLOW_MOD 0x0e
93 #define OFPT_PORT_MOD 0x0f
94 #define OFPT_STATS_REQUEST 0x10
95 #define OFPT_STATS_REPLY 0x11
96 #define OFPT_BARRIER_REQUEST 0x12
97 #define OFPT_BARRIER_REPLY 0x13
98 #define OFPT_QUEUE_GET_CONFIG_REQUEST 0x14
99 #define OFPT_QUEUE_GET_CONFIG_REPLY 0x15
100 static const struct tok ofpt_str[] = {
101 { OFPT_HELLO, "HELLO" },
102 { OFPT_ERROR, "ERROR" },
103 { OFPT_ECHO_REQUEST, "ECHO_REQUEST" },
104 { OFPT_ECHO_REPLY, "ECHO_REPLY" },
105 { OFPT_VENDOR, "VENDOR" },
106 { OFPT_FEATURES_REQUEST, "FEATURES_REQUEST" },
107 { OFPT_FEATURES_REPLY, "FEATURES_REPLY" },
108 { OFPT_GET_CONFIG_REQUEST, "GET_CONFIG_REQUEST" },
109 { OFPT_GET_CONFIG_REPLY, "GET_CONFIG_REPLY" },
110 { OFPT_SET_CONFIG, "SET_CONFIG" },
111 { OFPT_PACKET_IN, "PACKET_IN" },
112 { OFPT_FLOW_REMOVED, "FLOW_REMOVED" },
113 { OFPT_PORT_STATUS, "PORT_STATUS" },
114 { OFPT_PACKET_OUT, "PACKET_OUT" },
115 { OFPT_FLOW_MOD, "FLOW_MOD" },
116 { OFPT_PORT_MOD, "PORT_MOD" },
117 { OFPT_STATS_REQUEST, "STATS_REQUEST" },
118 { OFPT_STATS_REPLY, "STATS_REPLY" },
119 { OFPT_BARRIER_REQUEST, "BARRIER_REQUEST" },
120 { OFPT_BARRIER_REPLY, "BARRIER_REPLY" },
121 { OFPT_QUEUE_GET_CONFIG_REQUEST, "QUEUE_GET_CONFIG_REQUEST" },
122 { OFPT_QUEUE_GET_CONFIG_REPLY, "QUEUE_GET_CONFIG_REPLY" },
123 { 0, NULL }
124 };
125  
126 #define OFPPC_PORT_DOWN (1 << 0)
127 #define OFPPC_NO_STP (1 << 1)
128 #define OFPPC_NO_RECV (1 << 2)
129 #define OFPPC_NO_RECV_STP (1 << 3)
130 #define OFPPC_NO_FLOOD (1 << 4)
131 #define OFPPC_NO_FWD (1 << 5)
132 #define OFPPC_NO_PACKET_IN (1 << 6)
133 static const struct tok ofppc_bm[] = {
134 { OFPPC_PORT_DOWN, "PORT_DOWN" },
135 { OFPPC_NO_STP, "NO_STP" },
136 { OFPPC_NO_RECV, "NO_RECV" },
137 { OFPPC_NO_RECV_STP, "NO_RECV_STP" },
138 { OFPPC_NO_FLOOD, "NO_FLOOD" },
139 { OFPPC_NO_FWD, "NO_FWD" },
140 { OFPPC_NO_PACKET_IN, "NO_PACKET_IN" },
141 { 0, NULL }
142 };
143 #define OFPPC_U (~(OFPPC_PORT_DOWN | OFPPC_NO_STP | OFPPC_NO_RECV | \
144 OFPPC_NO_RECV_STP | OFPPC_NO_FLOOD | OFPPC_NO_FWD | \
145 OFPPC_NO_PACKET_IN))
146  
147 #define OFPPS_LINK_DOWN (1 << 0)
148 #define OFPPS_STP_LISTEN (0 << 8)
149 #define OFPPS_STP_LEARN (1 << 8)
150 #define OFPPS_STP_FORWARD (2 << 8)
151 #define OFPPS_STP_BLOCK (3 << 8)
152 #define OFPPS_STP_MASK (3 << 8)
153 static const struct tok ofpps_bm[] = {
154 { OFPPS_LINK_DOWN, "LINK_DOWN" },
155 { OFPPS_STP_LISTEN, "STP_LISTEN" },
156 { OFPPS_STP_LEARN, "STP_LEARN" },
157 { OFPPS_STP_FORWARD, "STP_FORWARD" },
158 { OFPPS_STP_BLOCK, "STP_BLOCK" },
159 { 0, NULL }
160 };
161 #define OFPPS_U (~(OFPPS_LINK_DOWN | OFPPS_STP_LISTEN | OFPPS_STP_LEARN | \
162 OFPPS_STP_FORWARD | OFPPS_STP_BLOCK))
163  
164 #define OFPP_MAX 0xff00
165 #define OFPP_IN_PORT 0xfff8
166 #define OFPP_TABLE 0xfff9
167 #define OFPP_NORMAL 0xfffa
168 #define OFPP_FLOOD 0xfffb
169 #define OFPP_ALL 0xfffc
170 #define OFPP_CONTROLLER 0xfffd
171 #define OFPP_LOCAL 0xfffe
172 #define OFPP_NONE 0xffff
173 static const struct tok ofpp_str[] = {
174 { OFPP_MAX, "MAX" },
175 { OFPP_IN_PORT, "IN_PORT" },
176 { OFPP_TABLE, "TABLE" },
177 { OFPP_NORMAL, "NORMAL" },
178 { OFPP_FLOOD, "FLOOD" },
179 { OFPP_ALL, "ALL" },
180 { OFPP_CONTROLLER, "CONTROLLER" },
181 { OFPP_LOCAL, "LOCAL" },
182 { OFPP_NONE, "NONE" },
183 { 0, NULL }
184 };
185  
186 #define OFPPF_10MB_HD (1 << 0)
187 #define OFPPF_10MB_FD (1 << 1)
188 #define OFPPF_100MB_HD (1 << 2)
189 #define OFPPF_100MB_FD (1 << 3)
190 #define OFPPF_1GB_HD (1 << 4)
191 #define OFPPF_1GB_FD (1 << 5)
192 #define OFPPF_10GB_FD (1 << 6)
193 #define OFPPF_COPPER (1 << 7)
194 #define OFPPF_FIBER (1 << 8)
195 #define OFPPF_AUTONEG (1 << 9)
196 #define OFPPF_PAUSE (1 << 10)
197 #define OFPPF_PAUSE_ASYM (1 << 11)
198 static const struct tok ofppf_bm[] = {
199 { OFPPF_10MB_HD, "10MB_HD" },
200 { OFPPF_10MB_FD, "10MB_FD" },
201 { OFPPF_100MB_HD, "100MB_HD" },
202 { OFPPF_100MB_FD, "100MB_FD" },
203 { OFPPF_1GB_HD, "1GB_HD" },
204 { OFPPF_1GB_FD, "1GB_FD" },
205 { OFPPF_10GB_FD, "10GB_FD" },
206 { OFPPF_COPPER, "COPPER" },
207 { OFPPF_FIBER, "FIBER" },
208 { OFPPF_AUTONEG, "AUTONEG" },
209 { OFPPF_PAUSE, "PAUSE" },
210 { OFPPF_PAUSE_ASYM, "PAUSE_ASYM" },
211 { 0, NULL }
212 };
213 #define OFPPF_U (~(OFPPF_10MB_HD | OFPPF_10MB_FD | OFPPF_100MB_HD | \
214 OFPPF_100MB_FD | OFPPF_1GB_HD | OFPPF_1GB_FD | \
215 OFPPF_10GB_FD | OFPPF_COPPER | OFPPF_FIBER | \
216 OFPPF_AUTONEG | OFPPF_PAUSE | OFPPF_PAUSE_ASYM))
217  
218 #define OFPQT_NONE 0x0000
219 #define OFPQT_MIN_RATE 0x0001
220 static const struct tok ofpqt_str[] = {
221 { OFPQT_NONE, "NONE" },
222 { OFPQT_MIN_RATE, "MIN_RATE" },
223 { 0, NULL }
224 };
225  
226 #define OFPFW_IN_PORT (1 << 0)
227 #define OFPFW_DL_VLAN (1 << 1)
228 #define OFPFW_DL_SRC (1 << 2)
229 #define OFPFW_DL_DST (1 << 3)
230 #define OFPFW_DL_TYPE (1 << 4)
231 #define OFPFW_NW_PROTO (1 << 5)
232 #define OFPFW_TP_SRC (1 << 6)
233 #define OFPFW_TP_DST (1 << 7)
234 #define OFPFW_NW_SRC_SHIFT 8
235 #define OFPFW_NW_SRC_BITS 6
236 #define OFPFW_NW_SRC_MASK (((1 << OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT)
237 #define OFPFW_NW_DST_SHIFT 14
238 #define OFPFW_NW_DST_BITS 6
239 #define OFPFW_NW_DST_MASK (((1 << OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT)
240 #define OFPFW_DL_VLAN_PCP (1 << 20)
241 #define OFPFW_NW_TOS (1 << 21)
242 #define OFPFW_ALL ((1 << 22) - 1)
243 static const struct tok ofpfw_bm[] = {
244 { OFPFW_IN_PORT, "IN_PORT" },
245 { OFPFW_DL_VLAN, "DL_VLAN" },
246 { OFPFW_DL_SRC, "DL_SRC" },
247 { OFPFW_DL_DST, "DL_DST" },
248 { OFPFW_DL_TYPE, "DL_TYPE" },
249 { OFPFW_NW_PROTO, "NW_PROTO" },
250 { OFPFW_TP_SRC, "TP_SRC" },
251 { OFPFW_TP_DST, "TP_DST" },
252 { OFPFW_DL_VLAN_PCP, "DL_VLAN_PCP" },
253 { OFPFW_NW_TOS, "NW_TOS" },
254 { 0, NULL }
255 };
256 /* The above array does not include bits 8~13 (OFPFW_NW_SRC_*) and 14~19
257 * (OFPFW_NW_DST_*), which are not a part of the bitmap and require decoding
258 * other than that of tok2str(). The macro below includes these bits such that
259 * they are not reported as bogus in the decoding. */
260 #define OFPFW_U (~(OFPFW_ALL))
261  
262 #define OFPAT_OUTPUT 0x0000
263 #define OFPAT_SET_VLAN_VID 0x0001
264 #define OFPAT_SET_VLAN_PCP 0x0002
265 #define OFPAT_STRIP_VLAN 0x0003
266 #define OFPAT_SET_DL_SRC 0x0004
267 #define OFPAT_SET_DL_DST 0x0005
268 #define OFPAT_SET_NW_SRC 0x0006
269 #define OFPAT_SET_NW_DST 0x0007
270 #define OFPAT_SET_NW_TOS 0x0008
271 #define OFPAT_SET_TP_SRC 0x0009
272 #define OFPAT_SET_TP_DST 0x000a
273 #define OFPAT_ENQUEUE 0x000b
274 #define OFPAT_VENDOR 0xffff
275 static const struct tok ofpat_str[] = {
276 { OFPAT_OUTPUT, "OUTPUT" },
277 { OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
278 { OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
279 { OFPAT_STRIP_VLAN, "STRIP_VLAN" },
280 { OFPAT_SET_DL_SRC, "SET_DL_SRC" },
281 { OFPAT_SET_DL_DST, "SET_DL_DST" },
282 { OFPAT_SET_NW_SRC, "SET_NW_SRC" },
283 { OFPAT_SET_NW_DST, "SET_NW_DST" },
284 { OFPAT_SET_NW_TOS, "SET_NW_TOS" },
285 { OFPAT_SET_TP_SRC, "SET_TP_SRC" },
286 { OFPAT_SET_TP_DST, "SET_TP_DST" },
287 { OFPAT_ENQUEUE, "ENQUEUE" },
288 { OFPAT_VENDOR, "VENDOR" },
289 { 0, NULL }
290 };
291  
292 /* bit-shifted, w/o vendor action */
293 static const struct tok ofpat_bm[] = {
294 { 1 << OFPAT_OUTPUT, "OUTPUT" },
295 { 1 << OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
296 { 1 << OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
297 { 1 << OFPAT_STRIP_VLAN, "STRIP_VLAN" },
298 { 1 << OFPAT_SET_DL_SRC, "SET_DL_SRC" },
299 { 1 << OFPAT_SET_DL_DST, "SET_DL_DST" },
300 { 1 << OFPAT_SET_NW_SRC, "SET_NW_SRC" },
301 { 1 << OFPAT_SET_NW_DST, "SET_NW_DST" },
302 { 1 << OFPAT_SET_NW_TOS, "SET_NW_TOS" },
303 { 1 << OFPAT_SET_TP_SRC, "SET_TP_SRC" },
304 { 1 << OFPAT_SET_TP_DST, "SET_TP_DST" },
305 { 1 << OFPAT_ENQUEUE, "ENQUEUE" },
306 { 0, NULL }
307 };
308 #define OFPAT_U (~(1 << OFPAT_OUTPUT | 1 << OFPAT_SET_VLAN_VID | \
309 1 << OFPAT_SET_VLAN_PCP | 1 << OFPAT_STRIP_VLAN | \
310 1 << OFPAT_SET_DL_SRC | 1 << OFPAT_SET_DL_DST | \
311 1 << OFPAT_SET_NW_SRC | 1 << OFPAT_SET_NW_DST | \
312 1 << OFPAT_SET_NW_TOS | 1 << OFPAT_SET_TP_SRC | \
313 1 << OFPAT_SET_TP_DST | 1 << OFPAT_ENQUEUE))
314  
315 #define OFPC_FLOW_STATS (1 << 0)
316 #define OFPC_TABLE_STATS (1 << 1)
317 #define OFPC_PORT_STATS (1 << 2)
318 #define OFPC_STP (1 << 3)
319 #define OFPC_RESERVED (1 << 4)
320 #define OFPC_IP_REASM (1 << 5)
321 #define OFPC_QUEUE_STATS (1 << 6)
322 #define OFPC_ARP_MATCH_IP (1 << 7)
323 static const struct tok ofp_capabilities_bm[] = {
324 { OFPC_FLOW_STATS, "FLOW_STATS" },
325 { OFPC_TABLE_STATS, "TABLE_STATS" },
326 { OFPC_PORT_STATS, "PORT_STATS" },
327 { OFPC_STP, "STP" },
328 { OFPC_RESERVED, "RESERVED" }, /* not in the mask below */
329 { OFPC_IP_REASM, "IP_REASM" },
330 { OFPC_QUEUE_STATS, "QUEUE_STATS" },
331 { OFPC_ARP_MATCH_IP, "ARP_MATCH_IP" },
332 { 0, NULL }
333 };
334 #define OFPCAP_U (~(OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
335 OFPC_STP | OFPC_IP_REASM | OFPC_QUEUE_STATS | \
336 OFPC_ARP_MATCH_IP))
337  
338 #define OFPC_FRAG_NORMAL 0x0000
339 #define OFPC_FRAG_DROP 0x0001
340 #define OFPC_FRAG_REASM 0x0002
341 #define OFPC_FRAG_MASK 0x0003
342 static const struct tok ofp_config_str[] = {
343 { OFPC_FRAG_NORMAL, "FRAG_NORMAL" },
344 { OFPC_FRAG_DROP, "FRAG_DROP" },
345 { OFPC_FRAG_REASM, "FRAG_REASM" },
346 { 0, NULL }
347 };
348  
349 #define OFPFC_ADD 0x0000
350 #define OFPFC_MODIFY 0x0001
351 #define OFPFC_MODIFY_STRICT 0x0002
352 #define OFPFC_DELETE 0x0003
353 #define OFPFC_DELETE_STRICT 0x0004
354 static const struct tok ofpfc_str[] = {
355 { OFPFC_ADD, "ADD" },
356 { OFPFC_MODIFY, "MODIFY" },
357 { OFPFC_MODIFY_STRICT, "MODIFY_STRICT" },
358 { OFPFC_DELETE, "DELETE" },
359 { OFPFC_DELETE_STRICT, "DELETE_STRICT" },
360 { 0, NULL }
361 };
362  
363 static const struct tok bufferid_str[] = {
364 { 0xffffffff, "NONE" },
365 { 0, NULL }
366 };
367  
368 #define OFPFF_SEND_FLOW_REM (1 << 0)
369 #define OFPFF_CHECK_OVERLAP (1 << 1)
370 #define OFPFF_EMERG (1 << 2)
371 static const struct tok ofpff_bm[] = {
372 { OFPFF_SEND_FLOW_REM, "SEND_FLOW_REM" },
373 { OFPFF_CHECK_OVERLAP, "CHECK_OVERLAP" },
374 { OFPFF_EMERG, "EMERG" },
375 { 0, NULL }
376 };
377 #define OFPFF_U (~(OFPFF_SEND_FLOW_REM | OFPFF_CHECK_OVERLAP | OFPFF_EMERG))
378  
379 #define OFPST_DESC 0x0000
380 #define OFPST_FLOW 0x0001
381 #define OFPST_AGGREGATE 0x0002
382 #define OFPST_TABLE 0x0003
383 #define OFPST_PORT 0x0004
384 #define OFPST_QUEUE 0x0005
385 #define OFPST_VENDOR 0xffff
386 static const struct tok ofpst_str[] = {
387 { OFPST_DESC, "DESC" },
388 { OFPST_FLOW, "FLOW" },
389 { OFPST_AGGREGATE, "AGGREGATE" },
390 { OFPST_TABLE, "TABLE" },
391 { OFPST_PORT, "PORT" },
392 { OFPST_QUEUE, "QUEUE" },
393 { OFPST_VENDOR, "VENDOR" },
394 { 0, NULL }
395 };
396  
397 static const struct tok tableid_str[] = {
398 { 0xfe, "EMERG" },
399 { 0xff, "ALL" },
400 { 0, NULL }
401 };
402  
403 #define OFPQ_ALL 0xffffffff
404 static const struct tok ofpq_str[] = {
405 { OFPQ_ALL, "ALL" },
406 { 0, NULL }
407 };
408  
409 #define OFPSF_REPLY_MORE 0x0001
410 static const struct tok ofpsf_reply_bm[] = {
411 { OFPSF_REPLY_MORE, "MORE" },
412 { 0, NULL }
413 };
414 #define OFPSF_REPLY_U (~(OFPSF_REPLY_MORE))
415  
416 #define OFPR_NO_MATCH 0x00
417 #define OFPR_ACTION 0x01
418 static const struct tok ofpr_str[] = {
419 { OFPR_NO_MATCH, "NO_MATCH" },
420 { OFPR_ACTION, "ACTION" },
421 { 0, NULL }
422 };
423  
424 #define OFPRR_IDLE_TIMEOUT 0x00
425 #define OFPRR_HARD_TIMEOUT 0x01
426 #define OFPRR_DELETE 0x02
427 static const struct tok ofprr_str[] = {
428 { OFPRR_IDLE_TIMEOUT, "IDLE_TIMEOUT" },
429 { OFPRR_HARD_TIMEOUT, "HARD_TIMEOUT" },
430 { OFPRR_DELETE, "DELETE" },
431 { 0, NULL }
432 };
433  
434 #define OFPPR_ADD 0x00
435 #define OFPPR_DELETE 0x01
436 #define OFPPR_MODIFY 0x02
437 static const struct tok ofppr_str[] = {
438 { OFPPR_ADD, "ADD" },
439 { OFPPR_DELETE, "DELETE" },
440 { OFPPR_MODIFY, "MODIFY" },
441 { 0, NULL }
442 };
443  
444 #define OFPET_HELLO_FAILED 0x0000
445 #define OFPET_BAD_REQUEST 0x0001
446 #define OFPET_BAD_ACTION 0x0002
447 #define OFPET_FLOW_MOD_FAILED 0x0003
448 #define OFPET_PORT_MOD_FAILED 0x0004
449 #define OFPET_QUEUE_OP_FAILED 0x0005
450 static const struct tok ofpet_str[] = {
451 { OFPET_HELLO_FAILED, "HELLO_FAILED" },
452 { OFPET_BAD_REQUEST, "BAD_REQUEST" },
453 { OFPET_BAD_ACTION, "BAD_ACTION" },
454 { OFPET_FLOW_MOD_FAILED, "FLOW_MOD_FAILED" },
455 { OFPET_PORT_MOD_FAILED, "PORT_MOD_FAILED" },
456 { OFPET_QUEUE_OP_FAILED, "QUEUE_OP_FAILED" },
457 { 0, NULL }
458 };
459  
460 #define OFPHFC_INCOMPATIBLE 0x0000
461 #define OFPHFC_EPERM 0x0001
462 static const struct tok ofphfc_str[] = {
463 { OFPHFC_INCOMPATIBLE, "INCOMPATIBLE" },
464 { OFPHFC_EPERM, "EPERM" },
465 { 0, NULL }
466 };
467  
468 #define OFPBRC_BAD_VERSION 0x0000
469 #define OFPBRC_BAD_TYPE 0x0001
470 #define OFPBRC_BAD_STAT 0x0002
471 #define OFPBRC_BAD_VENDOR 0x0003
472 #define OFPBRC_BAD_SUBTYPE 0x0004
473 #define OFPBRC_EPERM 0x0005
474 #define OFPBRC_BAD_LEN 0x0006
475 #define OFPBRC_BUFFER_EMPTY 0x0007
476 #define OFPBRC_BUFFER_UNKNOWN 0x0008
477 static const struct tok ofpbrc_str[] = {
478 { OFPBRC_BAD_VERSION, "BAD_VERSION" },
479 { OFPBRC_BAD_TYPE, "BAD_TYPE" },
480 { OFPBRC_BAD_STAT, "BAD_STAT" },
481 { OFPBRC_BAD_VENDOR, "BAD_VENDOR" },
482 { OFPBRC_BAD_SUBTYPE, "BAD_SUBTYPE" },
483 { OFPBRC_EPERM, "EPERM" },
484 { OFPBRC_BAD_LEN, "BAD_LEN" },
485 { OFPBRC_BUFFER_EMPTY, "BUFFER_EMPTY" },
486 { OFPBRC_BUFFER_UNKNOWN, "BUFFER_UNKNOWN" },
487 { 0, NULL }
488 };
489  
490 #define OFPBAC_BAD_TYPE 0x0000
491 #define OFPBAC_BAD_LEN 0x0001
492 #define OFPBAC_BAD_VENDOR 0x0002
493 #define OFPBAC_BAD_VENDOR_TYPE 0x0003
494 #define OFPBAC_BAD_OUT_PORT 0x0004
495 #define OFPBAC_BAD_ARGUMENT 0x0005
496 #define OFPBAC_EPERM 0x0006
497 #define OFPBAC_TOO_MANY 0x0007
498 #define OFPBAC_BAD_QUEUE 0x0008
499 static const struct tok ofpbac_str[] = {
500 { OFPBAC_BAD_TYPE, "BAD_TYPE" },
501 { OFPBAC_BAD_LEN, "BAD_LEN" },
502 { OFPBAC_BAD_VENDOR, "BAD_VENDOR" },
503 { OFPBAC_BAD_VENDOR_TYPE, "BAD_VENDOR_TYPE" },
504 { OFPBAC_BAD_OUT_PORT, "BAD_OUT_PORT" },
505 { OFPBAC_BAD_ARGUMENT, "BAD_ARGUMENT" },
506 { OFPBAC_EPERM, "EPERM" },
507 { OFPBAC_TOO_MANY, "TOO_MANY" },
508 { OFPBAC_BAD_QUEUE, "BAD_QUEUE" },
509 { 0, NULL }
510 };
511  
512 #define OFPFMFC_ALL_TABLES_FULL 0x0000
513 #define OFPFMFC_OVERLAP 0x0001
514 #define OFPFMFC_EPERM 0x0002
515 #define OFPFMFC_BAD_EMERG_TIMEOUT 0x0003
516 #define OFPFMFC_BAD_COMMAND 0x0004
517 #define OFPFMFC_UNSUPPORTED 0x0005
518 static const struct tok ofpfmfc_str[] = {
519 { OFPFMFC_ALL_TABLES_FULL, "ALL_TABLES_FULL" },
520 { OFPFMFC_OVERLAP, "OVERLAP" },
521 { OFPFMFC_EPERM, "EPERM" },
522 { OFPFMFC_BAD_EMERG_TIMEOUT, "BAD_EMERG_TIMEOUT" },
523 { OFPFMFC_BAD_COMMAND, "BAD_COMMAND" },
524 { OFPFMFC_UNSUPPORTED, "UNSUPPORTED" },
525 { 0, NULL }
526 };
527  
528 #define OFPPMFC_BAD_PORT 0x0000
529 #define OFPPMFC_BAD_HW_ADDR 0x0001
530 static const struct tok ofppmfc_str[] = {
531 { OFPPMFC_BAD_PORT, "BAD_PORT" },
532 { OFPPMFC_BAD_HW_ADDR, "BAD_HW_ADDR" },
533 { 0, NULL }
534 };
535  
536 #define OFPQOFC_BAD_PORT 0x0000
537 #define OFPQOFC_BAD_QUEUE 0x0001
538 #define OFPQOFC_EPERM 0x0002
539 static const struct tok ofpqofc_str[] = {
540 { OFPQOFC_BAD_PORT, "BAD_PORT" },
541 { OFPQOFC_BAD_QUEUE, "BAD_QUEUE" },
542 { OFPQOFC_EPERM, "EPERM" },
543 { 0, NULL }
544 };
545  
546 static const struct tok empty_str[] = {
547 { 0, NULL }
548 };
549  
550 /* lengths (fixed or minimal) of particular protocol structures */
551 #define OF_SWITCH_CONFIG_LEN 12
552 #define OF_PHY_PORT_LEN 48
553 #define OF_SWITCH_FEATURES_LEN 32
554 #define OF_PORT_STATUS_LEN 64
555 #define OF_PORT_MOD_LEN 32
556 #define OF_PACKET_IN_LEN 20
557 #define OF_ACTION_OUTPUT_LEN 8
558 #define OF_ACTION_VLAN_VID_LEN 8
559 #define OF_ACTION_VLAN_PCP_LEN 8
560 #define OF_ACTION_DL_ADDR_LEN 16
561 #define OF_ACTION_NW_ADDR_LEN 8
562 #define OF_ACTION_TP_PORT_LEN 8
563 #define OF_ACTION_NW_TOS_LEN 8
564 #define OF_ACTION_VENDOR_HEADER_LEN 8
565 #define OF_ACTION_HEADER_LEN 8
566 #define OF_PACKET_OUT_LEN 16
567 #define OF_MATCH_LEN 40
568 #define OF_FLOW_MOD_LEN 72
569 #define OF_FLOW_REMOVED_LEN 88
570 #define OF_ERROR_MSG_LEN 12
571 #define OF_STATS_REQUEST_LEN 12
572 #define OF_STATS_REPLY_LEN 12
573 #define OF_DESC_STATS_LEN 1056
574 #define OF_FLOW_STATS_REQUEST_LEN 44
575 #define OF_FLOW_STATS_LEN 88
576 #define OF_AGGREGATE_STATS_REQUEST_LEN 44
577 #define OF_AGGREGATE_STATS_REPLY_LEN 24
578 #define OF_TABLE_STATS_LEN 64
579 #define OF_PORT_STATS_REQUEST_LEN 8
580 #define OF_PORT_STATS_LEN 104
581 #define OF_VENDOR_HEADER_LEN 12
582 #define OF_QUEUE_PROP_HEADER_LEN 8
583 #define OF_QUEUE_PROP_MIN_RATE_LEN 16
584 #define OF_PACKET_QUEUE_LEN 8
585 #define OF_QUEUE_GET_CONFIG_REQUEST_LEN 12
586 #define OF_QUEUE_GET_CONFIG_REPLY_LEN 16
587 #define OF_ACTION_ENQUEUE_LEN 16
588 #define OF_QUEUE_STATS_REQUEST_LEN 8
589 #define OF_QUEUE_STATS_LEN 32
590  
591 /* miscellaneous constants from [OF10] */
592 #define OFP_MAX_TABLE_NAME_LEN 32
593 #define OFP_MAX_PORT_NAME_LEN 16
594 #define DESC_STR_LEN 256
595 #define SERIAL_NUM_LEN 32
596 #define OFP_VLAN_NONE 0xffff
597  
598 /* vendor extensions */
599 #define BSN_SET_IP_MASK 0
600 #define BSN_GET_IP_MASK_REQUEST 1
601 #define BSN_GET_IP_MASK_REPLY 2
602 #define BSN_SET_MIRRORING 3
603 #define BSN_GET_MIRRORING_REQUEST 4
604 #define BSN_GET_MIRRORING_REPLY 5
605 #define BSN_SHELL_COMMAND 6
606 #define BSN_SHELL_OUTPUT 7
607 #define BSN_SHELL_STATUS 8
608 #define BSN_GET_INTERFACES_REQUEST 9
609 #define BSN_GET_INTERFACES_REPLY 10
610 #define BSN_SET_PKTIN_SUPPRESSION_REQUEST 11
611 #define BSN_SET_L2_TABLE_REQUEST 12
612 #define BSN_GET_L2_TABLE_REQUEST 13
613 #define BSN_GET_L2_TABLE_REPLY 14
614 #define BSN_VIRTUAL_PORT_CREATE_REQUEST 15
615 #define BSN_VIRTUAL_PORT_CREATE_REPLY 16
616 #define BSN_VIRTUAL_PORT_REMOVE_REQUEST 17
617 #define BSN_BW_ENABLE_SET_REQUEST 18
618 #define BSN_BW_ENABLE_GET_REQUEST 19
619 #define BSN_BW_ENABLE_GET_REPLY 20
620 #define BSN_BW_CLEAR_DATA_REQUEST 21
621 #define BSN_BW_CLEAR_DATA_REPLY 22
622 #define BSN_BW_ENABLE_SET_REPLY 23
623 #define BSN_SET_L2_TABLE_REPLY 24
624 #define BSN_SET_PKTIN_SUPPRESSION_REPLY 25
625 #define BSN_VIRTUAL_PORT_REMOVE_REPLY 26
626 #define BSN_HYBRID_GET_REQUEST 27
627 #define BSN_HYBRID_GET_REPLY 28
628 /* 29 */
629 /* 30 */
630 #define BSN_PDU_TX_REQUEST 31
631 #define BSN_PDU_TX_REPLY 32
632 #define BSN_PDU_RX_REQUEST 33
633 #define BSN_PDU_RX_REPLY 34
634 #define BSN_PDU_RX_TIMEOUT 35
635  
636 static const struct tok bsn_subtype_str[] = {
637 { BSN_SET_IP_MASK, "SET_IP_MASK" },
638 { BSN_GET_IP_MASK_REQUEST, "GET_IP_MASK_REQUEST" },
639 { BSN_GET_IP_MASK_REPLY, "GET_IP_MASK_REPLY" },
640 { BSN_SET_MIRRORING, "SET_MIRRORING" },
641 { BSN_GET_MIRRORING_REQUEST, "GET_MIRRORING_REQUEST" },
642 { BSN_GET_MIRRORING_REPLY, "GET_MIRRORING_REPLY" },
643 { BSN_SHELL_COMMAND, "SHELL_COMMAND" },
644 { BSN_SHELL_OUTPUT, "SHELL_OUTPUT" },
645 { BSN_SHELL_STATUS, "SHELL_STATUS" },
646 { BSN_GET_INTERFACES_REQUEST, "GET_INTERFACES_REQUEST" },
647 { BSN_GET_INTERFACES_REPLY, "GET_INTERFACES_REPLY" },
648 { BSN_SET_PKTIN_SUPPRESSION_REQUEST, "SET_PKTIN_SUPPRESSION_REQUEST" },
649 { BSN_SET_L2_TABLE_REQUEST, "SET_L2_TABLE_REQUEST" },
650 { BSN_GET_L2_TABLE_REQUEST, "GET_L2_TABLE_REQUEST" },
651 { BSN_GET_L2_TABLE_REPLY, "GET_L2_TABLE_REPLY" },
652 { BSN_VIRTUAL_PORT_CREATE_REQUEST, "VIRTUAL_PORT_CREATE_REQUEST" },
653 { BSN_VIRTUAL_PORT_CREATE_REPLY, "VIRTUAL_PORT_CREATE_REPLY" },
654 { BSN_VIRTUAL_PORT_REMOVE_REQUEST, "VIRTUAL_PORT_REMOVE_REQUEST" },
655 { BSN_BW_ENABLE_SET_REQUEST, "BW_ENABLE_SET_REQUEST" },
656 { BSN_BW_ENABLE_GET_REQUEST, "BW_ENABLE_GET_REQUEST" },
657 { BSN_BW_ENABLE_GET_REPLY, "BW_ENABLE_GET_REPLY" },
658 { BSN_BW_CLEAR_DATA_REQUEST, "BW_CLEAR_DATA_REQUEST" },
659 { BSN_BW_CLEAR_DATA_REPLY, "BW_CLEAR_DATA_REPLY" },
660 { BSN_BW_ENABLE_SET_REPLY, "BW_ENABLE_SET_REPLY" },
661 { BSN_SET_L2_TABLE_REPLY, "SET_L2_TABLE_REPLY" },
662 { BSN_SET_PKTIN_SUPPRESSION_REPLY, "SET_PKTIN_SUPPRESSION_REPLY" },
663 { BSN_VIRTUAL_PORT_REMOVE_REPLY, "VIRTUAL_PORT_REMOVE_REPLY" },
664 { BSN_HYBRID_GET_REQUEST, "HYBRID_GET_REQUEST" },
665 { BSN_HYBRID_GET_REPLY, "HYBRID_GET_REPLY" },
666 { BSN_PDU_TX_REQUEST, "PDU_TX_REQUEST" },
667 { BSN_PDU_TX_REPLY, "PDU_TX_REPLY" },
668 { BSN_PDU_RX_REQUEST, "PDU_RX_REQUEST" },
669 { BSN_PDU_RX_REPLY, "PDU_RX_REPLY" },
670 { BSN_PDU_RX_TIMEOUT, "PDU_RX_TIMEOUT" },
671 { 0, NULL }
672 };
673  
674 #define BSN_ACTION_MIRROR 1
675 #define BSN_ACTION_SET_TUNNEL_DST 2
676 /* 3 */
677 #define BSN_ACTION_CHECKSUM 4
678  
679 static const struct tok bsn_action_subtype_str[] = {
680 { BSN_ACTION_MIRROR, "MIRROR" },
681 { BSN_ACTION_SET_TUNNEL_DST, "SET_TUNNEL_DST" },
682 { BSN_ACTION_CHECKSUM, "CHECKSUM" },
683 { 0, NULL }
684 };
685  
686 static const struct tok bsn_mirror_copy_stage_str[] = {
687 { 0, "INGRESS" },
688 { 1, "EGRESS" },
689 { 0, NULL },
690 };
691  
692 static const struct tok bsn_onoff_str[] = {
693 { 0, "OFF" },
694 { 1, "ON" },
695 { 0, NULL },
696 };
697  
698 static const char *
699 vlan_str(const uint16_t vid)
700 {
701 static char buf[sizeof("65535 (bogus)")];
702 const char *fmt;
703  
704 if (vid == OFP_VLAN_NONE)
705 return "NONE";
706 fmt = (vid > 0 && vid < 0x0fff) ? "%u" : "%u (bogus)";
707 snprintf(buf, sizeof(buf), fmt, vid);
708 return buf;
709 }
710  
711 static const char *
712 pcp_str(const uint8_t pcp)
713 {
714 static char buf[sizeof("255 (bogus)")];
715 snprintf(buf, sizeof(buf), pcp <= 7 ? "%u" : "%u (bogus)", pcp);
716 return buf;
717 }
718  
719 static void
720 of10_bitmap_print(netdissect_options *ndo,
721 const struct tok *t, const uint32_t v, const uint32_t u)
722 {
723 const char *sep = " (";
724  
725 if (v == 0)
726 return;
727 /* assigned bits */
728 for (; t->s != NULL; t++)
729 if (v & t->v) {
730 ND_PRINT((ndo, "%s%s", sep, t->s));
731 sep = ", ";
732 }
733 /* unassigned bits? */
734 ND_PRINT((ndo, v & u ? ") (bogus)" : ")"));
735 }
736  
737 static const u_char *
738 of10_data_print(netdissect_options *ndo,
739 const u_char *cp, const u_char *ep, const u_int len)
740 {
741 if (len == 0)
742 return cp;
743 /* data */
744 ND_PRINT((ndo, "\n\t data (%u octets)", len));
745 ND_TCHECK2(*cp, len);
746 if (ndo->ndo_vflag >= 2)
747 hex_and_ascii_print(ndo, "\n\t ", cp, len);
748 return cp + len;
749  
750 trunc:
751 ND_PRINT((ndo, "%s", tstr));
752 return ep;
753 }
754  
755 static const u_char *
756 of10_bsn_message_print(netdissect_options *ndo,
757 const u_char *cp, const u_char *ep, const u_int len)
758 {
759 const u_char *cp0 = cp;
760 uint32_t subtype;
761  
762 if (len < 4)
763 goto corrupt;
764 /* subtype */
765 ND_TCHECK2(*cp, 4);
766 subtype = EXTRACT_32BITS(cp);
767 cp += 4;
768 ND_PRINT((ndo, "\n\t subtype %s", tok2str(bsn_subtype_str, "unknown (0x%08x)", subtype)));
769 switch (subtype) {
770 case BSN_GET_IP_MASK_REQUEST:
771 /*
772 * 0 1 2 3
773 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
774 * +---------------+---------------+---------------+---------------+
775 * | subtype |
776 * +---------------+---------------+---------------+---------------+
777 * | index | pad |
778 * +---------------+---------------+---------------+---------------+
779 * | pad |
780 * +---------------+---------------+---------------+---------------+
781 *
782 */
783 if (len != 12)
784 goto corrupt;
785 /* index */
786 ND_TCHECK2(*cp, 1);
787 ND_PRINT((ndo, ", index %u", *cp));
788 cp += 1;
789 /* pad */
790 ND_TCHECK2(*cp, 7);
791 cp += 7;
792 break;
793 case BSN_SET_IP_MASK:
794 case BSN_GET_IP_MASK_REPLY:
795 /*
796 * 0 1 2 3
797 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
798 * +---------------+---------------+---------------+---------------+
799 * | subtype |
800 * +---------------+---------------+---------------+---------------+
801 * | index | pad |
802 * +---------------+---------------+---------------+---------------+
803 * | mask |
804 * +---------------+---------------+---------------+---------------+
805 *
806 */
807 if (len != 12)
808 goto corrupt;
809 /* index */
810 ND_TCHECK2(*cp, 1);
811 ND_PRINT((ndo, ", index %u", *cp));
812 cp += 1;
813 /* pad */
814 ND_TCHECK2(*cp, 3);
815 cp += 3;
816 /* mask */
817 ND_TCHECK2(*cp, 4);
818 ND_PRINT((ndo, ", mask %s", ipaddr_string(ndo, cp)));
819 cp += 4;
820 break;
821 case BSN_SET_MIRRORING:
822 case BSN_GET_MIRRORING_REQUEST:
823 case BSN_GET_MIRRORING_REPLY:
824 /*
825 * 0 1 2 3
826 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
827 * +---------------+---------------+---------------+---------------+
828 * | subtype |
829 * +---------------+---------------+---------------+---------------+
830 * | report m. p. | pad |
831 * +---------------+---------------+---------------+---------------+
832 *
833 */
834 if (len != 8)
835 goto corrupt;
836 /* report_mirror_ports */
837 ND_TCHECK2(*cp, 1);
838 ND_PRINT((ndo, ", report_mirror_ports %s", tok2str(bsn_onoff_str, "bogus (%u)", *cp)));
839 cp += 1;
840 /* pad */
841 ND_TCHECK2(*cp, 3);
842 cp += 3;
843 break;
844 case BSN_GET_INTERFACES_REQUEST:
845 case BSN_GET_L2_TABLE_REQUEST:
846 case BSN_BW_ENABLE_GET_REQUEST:
847 case BSN_BW_CLEAR_DATA_REQUEST:
848 case BSN_HYBRID_GET_REQUEST:
849 /*
850 * 0 1 2 3
851 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
852 * +---------------+---------------+---------------+---------------+
853 * | subtype |
854 * +---------------+---------------+---------------+---------------+
855 *
856 */
857 if (len != 4)
858 goto corrupt;
859 break;
860 case BSN_VIRTUAL_PORT_REMOVE_REQUEST:
861 /*
862 * 0 1 2 3
863 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
864 * +---------------+---------------+---------------+---------------+
865 * | subtype |
866 * +---------------+---------------+---------------+---------------+
867 * | vport_no |
868 * +---------------+---------------+---------------+---------------+
869 *
870 */
871 if (len != 8)
872 goto corrupt;
873 /* vport_no */
874 ND_TCHECK2(*cp, 4);
875 ND_PRINT((ndo, ", vport_no %u", EXTRACT_32BITS(cp)));
876 cp += 4;
877 break;
878 case BSN_SHELL_COMMAND:
879 /*
880 * 0 1 2 3
881 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
882 * +---------------+---------------+---------------+---------------+
883 * | subtype |
884 * +---------------+---------------+---------------+---------------+
885 * | service |
886 * +---------------+---------------+---------------+---------------+
887 * | data ...
888 * +---------------+---------------+--------
889 *
890 */
891 if (len < 8)
892 goto corrupt;
893 /* service */
894 ND_TCHECK2(*cp, 4);
895 ND_PRINT((ndo, ", service %u", EXTRACT_32BITS(cp)));
896 cp += 4;
897 /* data */
898 ND_PRINT((ndo, ", data '"));
899 if (fn_printn(ndo, cp, len - 8, ep)) {
900 ND_PRINT((ndo, "'"));
901 goto trunc;
902 }
903 ND_PRINT((ndo, "'"));
904 cp += len - 8;
905 break;
906 case BSN_SHELL_OUTPUT:
907 /*
908 * 0 1 2 3
909 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
910 * +---------------+---------------+---------------+---------------+
911 * | subtype |
912 * +---------------+---------------+---------------+---------------+
913 * | data ...
914 * +---------------+---------------+--------
915 *
916 */
917 /* already checked that len >= 4 */
918 /* data */
919 ND_PRINT((ndo, ", data '"));
920 if (fn_printn(ndo, cp, len - 4, ep)) {
921 ND_PRINT((ndo, "'"));
922 goto trunc;
923 }
924 ND_PRINT((ndo, "'"));
925 cp += len - 4;
926 break;
927 case BSN_SHELL_STATUS:
928 /*
929 * 0 1 2 3
930 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
931 * +---------------+---------------+---------------+---------------+
932 * | subtype |
933 * +---------------+---------------+---------------+---------------+
934 * | status |
935 * +---------------+---------------+---------------+---------------+
936 *
937 */
938 if (len != 8)
939 goto corrupt;
940 /* status */
941 ND_TCHECK2(*cp, 4);
942 ND_PRINT((ndo, ", status 0x%08x", EXTRACT_32BITS(cp)));
943 cp += 4;
944 break;
945 default:
946 ND_TCHECK2(*cp, len - 4);
947 cp += len - 4;
948 }
949 return cp;
950  
951 corrupt: /* skip the undersized data */
952 ND_PRINT((ndo, "%s", cstr));
953 ND_TCHECK2(*cp0, len);
954 return cp0 + len;
955 trunc:
956 ND_PRINT((ndo, "%s", tstr));
957 return ep;
958 }
959  
960 static const u_char *
961 of10_bsn_actions_print(netdissect_options *ndo,
962 const u_char *cp, const u_char *ep, const u_int len)
963 {
964 const u_char *cp0 = cp;
965 uint32_t subtype, vlan_tag;
966  
967 if (len < 4)
968 goto corrupt;
969 /* subtype */
970 ND_TCHECK2(*cp, 4);
971 subtype = EXTRACT_32BITS(cp);
972 cp += 4;
973 ND_PRINT((ndo, "\n\t subtype %s", tok2str(bsn_action_subtype_str, "unknown (0x%08x)", subtype)));
974 switch (subtype) {
975 case BSN_ACTION_MIRROR:
976 /*
977 * 0 1 2 3
978 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
979 * +---------------+---------------+---------------+---------------+
980 * | subtype |
981 * +---------------+---------------+---------------+---------------+
982 * | dest_port |
983 * +---------------+---------------+---------------+---------------+
984 * | vlan_tag |
985 * +---------------+---------------+---------------+---------------+
986 * | copy_stage | pad |
987 * +---------------+---------------+---------------+---------------+
988 *
989 */
990 if (len != 16)
991 goto corrupt;
992 /* dest_port */
993 ND_TCHECK2(*cp, 4);
994 ND_PRINT((ndo, ", dest_port %u", EXTRACT_32BITS(cp)));
995 cp += 4;
996 /* vlan_tag */
997 ND_TCHECK2(*cp, 4);
998 vlan_tag = EXTRACT_32BITS(cp);
999 cp += 4;
1000 switch (vlan_tag >> 16) {
1001 case 0:
1002 ND_PRINT((ndo, ", vlan_tag none"));
1003 break;
1004 case ETHERTYPE_8021Q:
1005 ND_PRINT((ndo, ", vlan_tag 802.1Q (%s)", ieee8021q_tci_string(vlan_tag & 0xffff)));
1006 break;
1007 default:
1008 ND_PRINT((ndo, ", vlan_tag unknown (0x%04x)", vlan_tag >> 16));
1009 }
1010 /* copy_stage */
1011 ND_TCHECK2(*cp, 1);
1012 ND_PRINT((ndo, ", copy_stage %s", tok2str(bsn_mirror_copy_stage_str, "unknown (%u)", *cp)));
1013 cp += 1;
1014 /* pad */
1015 ND_TCHECK2(*cp, 3);
1016 cp += 3;
1017 break;
1018 default:
1019 ND_TCHECK2(*cp, len - 4);
1020 cp += len - 4;
1021 }
1022  
1023 return cp;
1024  
1025 corrupt:
1026 ND_PRINT((ndo, "%s", cstr));
1027 ND_TCHECK2(*cp0, len);
1028 return cp0 + len;
1029 trunc:
1030 ND_PRINT((ndo, "%s", tstr));
1031 return ep;
1032 }
1033  
1034 static const u_char *
1035 of10_vendor_action_print(netdissect_options *ndo,
1036 const u_char *cp, const u_char *ep, const u_int len)
1037 {
1038 uint32_t vendor;
1039 const u_char *(*decoder)(netdissect_options *, const u_char *, const u_char *, const u_int);
1040  
1041 if (len < 4)
1042 goto corrupt;
1043 /* vendor */
1044 ND_TCHECK2(*cp, 4);
1045 vendor = EXTRACT_32BITS(cp);
1046 cp += 4;
1047 ND_PRINT((ndo, ", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor)));
1048 /* data */
1049 decoder =
1050 vendor == OUI_BSN ? of10_bsn_actions_print :
1051 of10_data_print;
1052 return decoder(ndo, cp, ep, len - 4);
1053  
1054 corrupt: /* skip the undersized data */
1055 ND_PRINT((ndo, "%s", cstr));
1056 ND_TCHECK2(*cp, len);
1057 return cp + len;
1058 trunc:
1059 ND_PRINT((ndo, "%s", tstr));
1060 return ep;
1061 }
1062  
1063 static const u_char *
1064 of10_vendor_message_print(netdissect_options *ndo,
1065 const u_char *cp, const u_char *ep, const u_int len)
1066 {
1067 uint32_t vendor;
1068 const u_char *(*decoder)(netdissect_options *, const u_char *, const u_char *, u_int);
1069  
1070 if (len < 4)
1071 goto corrupt;
1072 /* vendor */
1073 ND_TCHECK2(*cp, 4);
1074 vendor = EXTRACT_32BITS(cp);
1075 cp += 4;
1076 ND_PRINT((ndo, ", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor)));
1077 /* data */
1078 decoder =
1079 vendor == OUI_BSN ? of10_bsn_message_print :
1080 of10_data_print;
1081 return decoder(ndo, cp, ep, len - 4);
1082  
1083 corrupt: /* skip the undersized data */
1084 ND_PRINT((ndo, "%s", cstr));
1085 ND_TCHECK2(*cp, len);
1086 return cp + len;
1087 trunc:
1088 ND_PRINT((ndo, "%s", tstr));
1089 return ep;
1090 }
1091  
1092 /* Vendor ID is mandatory, data is optional. */
1093 static const u_char *
1094 of10_vendor_data_print(netdissect_options *ndo,
1095 const u_char *cp, const u_char *ep, const u_int len)
1096 {
1097 uint32_t vendor;
1098  
1099 if (len < 4)
1100 goto corrupt;
1101 /* vendor */
1102 ND_TCHECK2(*cp, 4);
1103 vendor = EXTRACT_32BITS(cp);
1104 cp += 4;
1105 ND_PRINT((ndo, ", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor)));
1106 /* data */
1107 return of10_data_print(ndo, cp, ep, len - 4);
1108  
1109 corrupt: /* skip the undersized data */
1110 ND_PRINT((ndo, "%s", cstr));
1111 ND_TCHECK2(*cp, len);
1112 return cp + len;
1113 trunc:
1114 ND_PRINT((ndo, "%s", tstr));
1115 return ep;
1116 }
1117  
1118 static const u_char *
1119 of10_packet_data_print(netdissect_options *ndo,
1120 const u_char *cp, const u_char *ep, const u_int len)
1121 {
1122 if (len == 0)
1123 return cp;
1124 /* data */
1125 ND_PRINT((ndo, "\n\t data (%u octets)", len));
1126 if (ndo->ndo_vflag < 3)
1127 return cp + len;
1128 ND_TCHECK2(*cp, len);
1129 ndo->ndo_vflag -= 3;
1130 ND_PRINT((ndo, ", frame decoding below\n"));
1131 ether_print(ndo, cp, len, ndo->ndo_snapend - cp, NULL, NULL);
1132 ndo->ndo_vflag += 3;
1133 return cp + len;
1134  
1135 trunc:
1136 ND_PRINT((ndo, "%s", tstr));
1137 return ep;
1138 }
1139  
1140 /* [OF10] Section 5.2.1 */
1141 static const u_char *
1142 of10_phy_ports_print(netdissect_options *ndo,
1143 const u_char *cp, const u_char *ep, u_int len)
1144 {
1145 const u_char *cp0 = cp;
1146 const u_int len0 = len;
1147  
1148 while (len) {
1149 if (len < OF_PHY_PORT_LEN)
1150 goto corrupt;
1151 /* port_no */
1152 ND_TCHECK2(*cp, 2);
1153 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1154 cp += 2;
1155 /* hw_addr */
1156 ND_TCHECK2(*cp, ETHER_ADDR_LEN);
1157 ND_PRINT((ndo, ", hw_addr %s", etheraddr_string(ndo, cp)));
1158 cp += ETHER_ADDR_LEN;
1159 /* name */
1160 ND_TCHECK2(*cp, OFP_MAX_PORT_NAME_LEN);
1161 ND_PRINT((ndo, ", name '"));
1162 fn_print(ndo, cp, cp + OFP_MAX_PORT_NAME_LEN);
1163 ND_PRINT((ndo, "'"));
1164 cp += OFP_MAX_PORT_NAME_LEN;
1165  
1166 if (ndo->ndo_vflag < 2) {
1167 ND_TCHECK2(*cp, 24);
1168 cp += 24;
1169 goto next_port;
1170 }
1171 /* config */
1172 ND_TCHECK2(*cp, 4);
1173 ND_PRINT((ndo, "\n\t config 0x%08x", EXTRACT_32BITS(cp)));
1174 of10_bitmap_print(ndo, ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U);
1175 cp += 4;
1176 /* state */
1177 ND_TCHECK2(*cp, 4);
1178 ND_PRINT((ndo, "\n\t state 0x%08x", EXTRACT_32BITS(cp)));
1179 of10_bitmap_print(ndo, ofpps_bm, EXTRACT_32BITS(cp), OFPPS_U);
1180 cp += 4;
1181 /* curr */
1182 ND_TCHECK2(*cp, 4);
1183 ND_PRINT((ndo, "\n\t curr 0x%08x", EXTRACT_32BITS(cp)));
1184 of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
1185 cp += 4;
1186 /* advertised */
1187 ND_TCHECK2(*cp, 4);
1188 ND_PRINT((ndo, "\n\t advertised 0x%08x", EXTRACT_32BITS(cp)));
1189 of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
1190 cp += 4;
1191 /* supported */
1192 ND_TCHECK2(*cp, 4);
1193 ND_PRINT((ndo, "\n\t supported 0x%08x", EXTRACT_32BITS(cp)));
1194 of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
1195 cp += 4;
1196 /* peer */
1197 ND_TCHECK2(*cp, 4);
1198 ND_PRINT((ndo, "\n\t peer 0x%08x", EXTRACT_32BITS(cp)));
1199 of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
1200 cp += 4;
1201 next_port:
1202 len -= OF_PHY_PORT_LEN;
1203 } /* while */
1204 return cp;
1205  
1206 corrupt: /* skip the undersized trailing data */
1207 ND_PRINT((ndo, "%s", cstr));
1208 ND_TCHECK2(*cp0, len0);
1209 return cp0 + len0;
1210 trunc:
1211 ND_PRINT((ndo, "%s", tstr));
1212 return ep;
1213 }
1214  
1215 /* [OF10] Section 5.2.2 */
1216 static const u_char *
1217 of10_queue_props_print(netdissect_options *ndo,
1218 const u_char *cp, const u_char *ep, u_int len)
1219 {
1220 const u_char *cp0 = cp;
1221 const u_int len0 = len;
1222 uint16_t property, plen, rate;
1223  
1224 while (len) {
1225 u_char plen_bogus = 0, skip = 0;
1226  
1227 if (len < OF_QUEUE_PROP_HEADER_LEN)
1228 goto corrupt;
1229 /* property */
1230 ND_TCHECK2(*cp, 2);
1231 property = EXTRACT_16BITS(cp);
1232 cp += 2;
1233 ND_PRINT((ndo, "\n\t property %s", tok2str(ofpqt_str, "invalid (0x%04x)", property)));
1234 /* len */
1235 ND_TCHECK2(*cp, 2);
1236 plen = EXTRACT_16BITS(cp);
1237 cp += 2;
1238 ND_PRINT((ndo, ", len %u", plen));
1239 if (plen < OF_QUEUE_PROP_HEADER_LEN || plen > len)
1240 goto corrupt;
1241 /* pad */
1242 ND_TCHECK2(*cp, 4);
1243 cp += 4;
1244 /* property-specific constraints and decoding */
1245 switch (property) {
1246 case OFPQT_NONE:
1247 plen_bogus = plen != OF_QUEUE_PROP_HEADER_LEN;
1248 break;
1249 case OFPQT_MIN_RATE:
1250 plen_bogus = plen != OF_QUEUE_PROP_MIN_RATE_LEN;
1251 break;
1252 default:
1253 skip = 1;
1254 }
1255 if (plen_bogus) {
1256 ND_PRINT((ndo, " (bogus)"));
1257 skip = 1;
1258 }
1259 if (skip) {
1260 ND_TCHECK2(*cp, plen - 4);
1261 cp += plen - 4;
1262 goto next_property;
1263 }
1264 if (property == OFPQT_MIN_RATE) { /* the only case of property decoding */
1265 /* rate */
1266 ND_TCHECK2(*cp, 2);
1267 rate = EXTRACT_16BITS(cp);
1268 cp += 2;
1269 if (rate > 1000)
1270 ND_PRINT((ndo, ", rate disabled"));
1271 else
1272 ND_PRINT((ndo, ", rate %u.%u%%", rate / 10, rate % 10));
1273 /* pad */
1274 ND_TCHECK2(*cp, 6);
1275 cp += 6;
1276 }
1277 next_property:
1278 len -= plen;
1279 } /* while */
1280 return cp;
1281  
1282 corrupt: /* skip the rest of queue properties */
1283 ND_PRINT((ndo, "%s", cstr));
1284 ND_TCHECK2(*cp0, len0);
1285 return cp0 + len0;
1286 trunc:
1287 ND_PRINT((ndo, "%s", tstr));
1288 return ep;
1289 }
1290  
1291 /* ibid */
1292 static const u_char *
1293 of10_queues_print(netdissect_options *ndo,
1294 const u_char *cp, const u_char *ep, u_int len)
1295 {
1296 const u_char *cp0 = cp;
1297 const u_int len0 = len;
1298 uint16_t desclen;
1299  
1300 while (len) {
1301 if (len < OF_PACKET_QUEUE_LEN)
1302 goto corrupt;
1303 /* queue_id */
1304 ND_TCHECK2(*cp, 4);
1305 ND_PRINT((ndo, "\n\t queue_id %u", EXTRACT_32BITS(cp)));
1306 cp += 4;
1307 /* len */
1308 ND_TCHECK2(*cp, 2);
1309 desclen = EXTRACT_16BITS(cp);
1310 cp += 2;
1311 ND_PRINT((ndo, ", len %u", desclen));
1312 if (desclen < OF_PACKET_QUEUE_LEN || desclen > len)
1313 goto corrupt;
1314 /* pad */
1315 ND_TCHECK2(*cp, 2);
1316 cp += 2;
1317 /* properties */
1318 if (ndo->ndo_vflag < 2) {
1319 ND_TCHECK2(*cp, desclen - OF_PACKET_QUEUE_LEN);
1320 cp += desclen - OF_PACKET_QUEUE_LEN;
1321 goto next_queue;
1322 }
1323 if (ep == (cp = of10_queue_props_print(ndo, cp, ep, desclen - OF_PACKET_QUEUE_LEN)))
1324 return ep; /* end of snapshot */
1325 next_queue:
1326 len -= desclen;
1327 } /* while */
1328 return cp;
1329  
1330 corrupt: /* skip the rest of queues */
1331 ND_PRINT((ndo, "%s", cstr));
1332 ND_TCHECK2(*cp0, len0);
1333 return cp0 + len0;
1334 trunc:
1335 ND_PRINT((ndo, "%s", tstr));
1336 return ep;
1337 }
1338  
1339 /* [OF10] Section 5.2.3 */
1340 static const u_char *
1341 of10_match_print(netdissect_options *ndo,
1342 const char *pfx, const u_char *cp, const u_char *ep)
1343 {
1344 uint32_t wildcards;
1345 uint16_t dl_type;
1346 uint8_t nw_proto;
1347 u_char nw_bits;
1348 const char *field_name;
1349  
1350 /* wildcards */
1351 ND_TCHECK2(*cp, 4);
1352 wildcards = EXTRACT_32BITS(cp);
1353 if (wildcards & OFPFW_U)
1354 ND_PRINT((ndo, "%swildcards 0x%08x (bogus)", pfx, wildcards));
1355 cp += 4;
1356 /* in_port */
1357 ND_TCHECK2(*cp, 2);
1358 if (! (wildcards & OFPFW_IN_PORT))
1359 ND_PRINT((ndo, "%smatch in_port %s", pfx, tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1360 cp += 2;
1361 /* dl_src */
1362 ND_TCHECK2(*cp, ETHER_ADDR_LEN);
1363 if (! (wildcards & OFPFW_DL_SRC))
1364 ND_PRINT((ndo, "%smatch dl_src %s", pfx, etheraddr_string(ndo, cp)));
1365 cp += ETHER_ADDR_LEN;
1366 /* dl_dst */
1367 ND_TCHECK2(*cp, ETHER_ADDR_LEN);
1368 if (! (wildcards & OFPFW_DL_DST))
1369 ND_PRINT((ndo, "%smatch dl_dst %s", pfx, etheraddr_string(ndo, cp)));
1370 cp += ETHER_ADDR_LEN;
1371 /* dl_vlan */
1372 ND_TCHECK2(*cp, 2);
1373 if (! (wildcards & OFPFW_DL_VLAN))
1374 ND_PRINT((ndo, "%smatch dl_vlan %s", pfx, vlan_str(EXTRACT_16BITS(cp))));
1375 cp += 2;
1376 /* dl_vlan_pcp */
1377 ND_TCHECK2(*cp, 1);
1378 if (! (wildcards & OFPFW_DL_VLAN_PCP))
1379 ND_PRINT((ndo, "%smatch dl_vlan_pcp %s", pfx, pcp_str(*cp)));
1380 cp += 1;
1381 /* pad1 */
1382 ND_TCHECK2(*cp, 1);
1383 cp += 1;
1384 /* dl_type */
1385 ND_TCHECK2(*cp, 2);
1386 dl_type = EXTRACT_16BITS(cp);
1387 cp += 2;
1388 if (! (wildcards & OFPFW_DL_TYPE))
1389 ND_PRINT((ndo, "%smatch dl_type 0x%04x", pfx, dl_type));
1390 /* nw_tos */
1391 ND_TCHECK2(*cp, 1);
1392 if (! (wildcards & OFPFW_NW_TOS))
1393 ND_PRINT((ndo, "%smatch nw_tos 0x%02x", pfx, *cp));
1394 cp += 1;
1395 /* nw_proto */
1396 ND_TCHECK2(*cp, 1);
1397 nw_proto = *cp;
1398 cp += 1;
1399 if (! (wildcards & OFPFW_NW_PROTO)) {
1400 field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_ARP
1401 ? "arp_opcode" : "nw_proto";
1402 ND_PRINT((ndo, "%smatch %s %u", pfx, field_name, nw_proto));
1403 }
1404 /* pad2 */
1405 ND_TCHECK2(*cp, 2);
1406 cp += 2;
1407 /* nw_src */
1408 ND_TCHECK2(*cp, 4);
1409 nw_bits = (wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT;
1410 if (nw_bits < 32)
1411 ND_PRINT((ndo, "%smatch nw_src %s/%u", pfx, ipaddr_string(ndo, cp), 32 - nw_bits));
1412 cp += 4;
1413 /* nw_dst */
1414 ND_TCHECK2(*cp, 4);
1415 nw_bits = (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT;
1416 if (nw_bits < 32)
1417 ND_PRINT((ndo, "%smatch nw_dst %s/%u", pfx, ipaddr_string(ndo, cp), 32 - nw_bits));
1418 cp += 4;
1419 /* tp_src */
1420 ND_TCHECK2(*cp, 2);
1421 if (! (wildcards & OFPFW_TP_SRC)) {
1422 field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
1423 && ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
1424 ? "icmp_type" : "tp_src";
1425 ND_PRINT((ndo, "%smatch %s %u", pfx, field_name, EXTRACT_16BITS(cp)));
1426 }
1427 cp += 2;
1428 /* tp_dst */
1429 ND_TCHECK2(*cp, 2);
1430 if (! (wildcards & OFPFW_TP_DST)) {
1431 field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
1432 && ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
1433 ? "icmp_code" : "tp_dst";
1434 ND_PRINT((ndo, "%smatch %s %u", pfx, field_name, EXTRACT_16BITS(cp)));
1435 }
1436 return cp + 2;
1437  
1438 trunc:
1439 ND_PRINT((ndo, "%s", tstr));
1440 return ep;
1441 }
1442  
1443 /* [OF10] Section 5.2.4 */
1444 static const u_char *
1445 of10_actions_print(netdissect_options *ndo,
1446 const char *pfx, const u_char *cp, const u_char *ep,
1447 u_int len)
1448 {
1449 const u_char *cp0 = cp;
1450 const u_int len0 = len;
1451 uint16_t type, alen, output_port;
1452  
1453 while (len) {
1454 u_char alen_bogus = 0, skip = 0;
1455  
1456 if (len < OF_ACTION_HEADER_LEN)
1457 goto corrupt;
1458 /* type */
1459 ND_TCHECK2(*cp, 2);
1460 type = EXTRACT_16BITS(cp);
1461 cp += 2;
1462 ND_PRINT((ndo, "%saction type %s", pfx, tok2str(ofpat_str, "invalid (0x%04x)", type)));
1463 /* length */
1464 ND_TCHECK2(*cp, 2);
1465 alen = EXTRACT_16BITS(cp);
1466 cp += 2;
1467 ND_PRINT((ndo, ", len %u", alen));
1468 /* On action size underrun/overrun skip the rest of the action list. */
1469 if (alen < OF_ACTION_HEADER_LEN || alen > len)
1470 goto corrupt;
1471 /* On action size inappropriate for the given type or invalid type just skip
1472 * the current action, as the basic length constraint has been met. */
1473 switch (type) {
1474 case OFPAT_OUTPUT:
1475 case OFPAT_SET_VLAN_VID:
1476 case OFPAT_SET_VLAN_PCP:
1477 case OFPAT_STRIP_VLAN:
1478 case OFPAT_SET_NW_SRC:
1479 case OFPAT_SET_NW_DST:
1480 case OFPAT_SET_NW_TOS:
1481 case OFPAT_SET_TP_SRC:
1482 case OFPAT_SET_TP_DST:
1483 alen_bogus = alen != 8;
1484 break;
1485 case OFPAT_SET_DL_SRC:
1486 case OFPAT_SET_DL_DST:
1487 case OFPAT_ENQUEUE:
1488 alen_bogus = alen != 16;
1489 break;
1490 case OFPAT_VENDOR:
1491 alen_bogus = alen % 8 != 0; /* already >= 8 so far */
1492 break;
1493 default:
1494 skip = 1;
1495 }
1496 if (alen_bogus) {
1497 ND_PRINT((ndo, " (bogus)"));
1498 skip = 1;
1499 }
1500 if (skip) {
1501 ND_TCHECK2(*cp, alen - 4);
1502 cp += alen - 4;
1503 goto next_action;
1504 }
1505 /* OK to decode the rest of the action structure */
1506 switch (type) {
1507 case OFPAT_OUTPUT:
1508 /* port */
1509 ND_TCHECK2(*cp, 2);
1510 output_port = EXTRACT_16BITS(cp);
1511 cp += 2;
1512 ND_PRINT((ndo, ", port %s", tok2str(ofpp_str, "%u", output_port)));
1513 /* max_len */
1514 ND_TCHECK2(*cp, 2);
1515 if (output_port == OFPP_CONTROLLER)
1516 ND_PRINT((ndo, ", max_len %u", EXTRACT_16BITS(cp)));
1517 cp += 2;
1518 break;
1519 case OFPAT_SET_VLAN_VID:
1520 /* vlan_vid */
1521 ND_TCHECK2(*cp, 2);
1522 ND_PRINT((ndo, ", vlan_vid %s", vlan_str(EXTRACT_16BITS(cp))));
1523 cp += 2;
1524 /* pad */
1525 ND_TCHECK2(*cp, 2);
1526 cp += 2;
1527 break;
1528 case OFPAT_SET_VLAN_PCP:
1529 /* vlan_pcp */
1530 ND_TCHECK2(*cp, 1);
1531 ND_PRINT((ndo, ", vlan_pcp %s", pcp_str(*cp)));
1532 cp += 1;
1533 /* pad */
1534 ND_TCHECK2(*cp, 3);
1535 cp += 3;
1536 break;
1537 case OFPAT_SET_DL_SRC:
1538 case OFPAT_SET_DL_DST:
1539 /* dl_addr */
1540 ND_TCHECK2(*cp, ETHER_ADDR_LEN);
1541 ND_PRINT((ndo, ", dl_addr %s", etheraddr_string(ndo, cp)));
1542 cp += ETHER_ADDR_LEN;
1543 /* pad */
1544 ND_TCHECK2(*cp, 6);
1545 cp += 6;
1546 break;
1547 case OFPAT_SET_NW_SRC:
1548 case OFPAT_SET_NW_DST:
1549 /* nw_addr */
1550 ND_TCHECK2(*cp, 4);
1551 ND_PRINT((ndo, ", nw_addr %s", ipaddr_string(ndo, cp)));
1552 cp += 4;
1553 break;
1554 case OFPAT_SET_NW_TOS:
1555 /* nw_tos */
1556 ND_TCHECK2(*cp, 1);
1557 ND_PRINT((ndo, ", nw_tos 0x%02x", *cp));
1558 cp += 1;
1559 /* pad */
1560 ND_TCHECK2(*cp, 3);
1561 cp += 3;
1562 break;
1563 case OFPAT_SET_TP_SRC:
1564 case OFPAT_SET_TP_DST:
1565 /* nw_tos */
1566 ND_TCHECK2(*cp, 2);
1567 ND_PRINT((ndo, ", tp_port %u", EXTRACT_16BITS(cp)));
1568 cp += 2;
1569 /* pad */
1570 ND_TCHECK2(*cp, 2);
1571 cp += 2;
1572 break;
1573 case OFPAT_ENQUEUE:
1574 /* port */
1575 ND_TCHECK2(*cp, 2);
1576 ND_PRINT((ndo, ", port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1577 cp += 2;
1578 /* pad */
1579 ND_TCHECK2(*cp, 6);
1580 cp += 6;
1581 /* queue_id */
1582 ND_TCHECK2(*cp, 4);
1583 ND_PRINT((ndo, ", queue_id %s", tok2str(ofpq_str, "%u", EXTRACT_32BITS(cp))));
1584 cp += 4;
1585 break;
1586 case OFPAT_VENDOR:
1587 if (ep == (cp = of10_vendor_action_print(ndo, cp, ep, alen - 4)))
1588 return ep; /* end of snapshot */
1589 break;
1590 case OFPAT_STRIP_VLAN:
1591 /* pad */
1592 ND_TCHECK2(*cp, 4);
1593 cp += 4;
1594 break;
1595 } /* switch */
1596 next_action:
1597 len -= alen;
1598 } /* while */
1599 return cp;
1600  
1601 corrupt: /* skip the rest of actions */
1602 ND_PRINT((ndo, "%s", cstr));
1603 ND_TCHECK2(*cp0, len0);
1604 return cp0 + len0;
1605 trunc:
1606 ND_PRINT((ndo, "%s", tstr));
1607 return ep;
1608 }
1609  
1610 /* [OF10] Section 5.3.1 */
1611 static const u_char *
1612 of10_features_reply_print(netdissect_options *ndo,
1613 const u_char *cp, const u_char *ep, const u_int len)
1614 {
1615 /* datapath_id */
1616 ND_TCHECK2(*cp, 8);
1617 ND_PRINT((ndo, "\n\t dpid 0x%016" PRIx64, EXTRACT_64BITS(cp)));
1618 cp += 8;
1619 /* n_buffers */
1620 ND_TCHECK2(*cp, 4);
1621 ND_PRINT((ndo, ", n_buffers %u", EXTRACT_32BITS(cp)));
1622 cp += 4;
1623 /* n_tables */
1624 ND_TCHECK2(*cp, 1);
1625 ND_PRINT((ndo, ", n_tables %u", *cp));
1626 cp += 1;
1627 /* pad */
1628 ND_TCHECK2(*cp, 3);
1629 cp += 3;
1630 /* capabilities */
1631 ND_TCHECK2(*cp, 4);
1632 ND_PRINT((ndo, "\n\t capabilities 0x%08x", EXTRACT_32BITS(cp)));
1633 of10_bitmap_print(ndo, ofp_capabilities_bm, EXTRACT_32BITS(cp), OFPCAP_U);
1634 cp += 4;
1635 /* actions */
1636 ND_TCHECK2(*cp, 4);
1637 ND_PRINT((ndo, "\n\t actions 0x%08x", EXTRACT_32BITS(cp)));
1638 of10_bitmap_print(ndo, ofpat_bm, EXTRACT_32BITS(cp), OFPAT_U);
1639 cp += 4;
1640 /* ports */
1641 return of10_phy_ports_print(ndo, cp, ep, len - OF_SWITCH_FEATURES_LEN);
1642  
1643 trunc:
1644 ND_PRINT((ndo, "%s", tstr));
1645 return ep;
1646 }
1647  
1648 /* [OF10] Section 5.3.3 */
1649 static const u_char *
1650 of10_flow_mod_print(netdissect_options *ndo,
1651 const u_char *cp, const u_char *ep, const u_int len)
1652 {
1653 uint16_t command;
1654  
1655 /* match */
1656 if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
1657 return ep; /* end of snapshot */
1658 /* cookie */
1659 ND_TCHECK2(*cp, 8);
1660 ND_PRINT((ndo, "\n\t cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)));
1661 cp += 8;
1662 /* command */
1663 ND_TCHECK2(*cp, 2);
1664 command = EXTRACT_16BITS(cp);
1665 ND_PRINT((ndo, ", command %s", tok2str(ofpfc_str, "invalid (0x%04x)", command)));
1666 cp += 2;
1667 /* idle_timeout */
1668 ND_TCHECK2(*cp, 2);
1669 if (EXTRACT_16BITS(cp))
1670 ND_PRINT((ndo, ", idle_timeout %u", EXTRACT_16BITS(cp)));
1671 cp += 2;
1672 /* hard_timeout */
1673 ND_TCHECK2(*cp, 2);
1674 if (EXTRACT_16BITS(cp))
1675 ND_PRINT((ndo, ", hard_timeout %u", EXTRACT_16BITS(cp)));
1676 cp += 2;
1677 /* priority */
1678 ND_TCHECK2(*cp, 2);
1679 if (EXTRACT_16BITS(cp))
1680 ND_PRINT((ndo, ", priority %u", EXTRACT_16BITS(cp)));
1681 cp += 2;
1682 /* buffer_id */
1683 ND_TCHECK2(*cp, 4);
1684 if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
1685 command == OFPFC_MODIFY_STRICT)
1686 ND_PRINT((ndo, ", buffer_id %s", tok2str(bufferid_str, "0x%08x", EXTRACT_32BITS(cp))));
1687 cp += 4;
1688 /* out_port */
1689 ND_TCHECK2(*cp, 2);
1690 if (command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT)
1691 ND_PRINT((ndo, ", out_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1692 cp += 2;
1693 /* flags */
1694 ND_TCHECK2(*cp, 2);
1695 ND_PRINT((ndo, ", flags 0x%04x", EXTRACT_16BITS(cp)));
1696 of10_bitmap_print(ndo, ofpff_bm, EXTRACT_16BITS(cp), OFPFF_U);
1697 cp += 2;
1698 /* actions */
1699 return of10_actions_print(ndo, "\n\t ", cp, ep, len - OF_FLOW_MOD_LEN);
1700  
1701 trunc:
1702 ND_PRINT((ndo, "%s", tstr));
1703 return ep;
1704 }
1705  
1706 /* ibid */
1707 static const u_char *
1708 of10_port_mod_print(netdissect_options *ndo,
1709 const u_char *cp, const u_char *ep)
1710 {
1711 /* port_no */
1712 ND_TCHECK2(*cp, 2);
1713 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1714 cp += 2;
1715 /* hw_addr */
1716 ND_TCHECK2(*cp, ETHER_ADDR_LEN);
1717 ND_PRINT((ndo, ", hw_addr %s", etheraddr_string(ndo, cp)));
1718 cp += ETHER_ADDR_LEN;
1719 /* config */
1720 ND_TCHECK2(*cp, 4);
1721 ND_PRINT((ndo, "\n\t config 0x%08x", EXTRACT_32BITS(cp)));
1722 of10_bitmap_print(ndo, ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U);
1723 cp += 4;
1724 /* mask */
1725 ND_TCHECK2(*cp, 4);
1726 ND_PRINT((ndo, "\n\t mask 0x%08x", EXTRACT_32BITS(cp)));
1727 of10_bitmap_print(ndo, ofppc_bm, EXTRACT_32BITS(cp), OFPPC_U);
1728 cp += 4;
1729 /* advertise */
1730 ND_TCHECK2(*cp, 4);
1731 ND_PRINT((ndo, "\n\t advertise 0x%08x", EXTRACT_32BITS(cp)));
1732 of10_bitmap_print(ndo, ofppf_bm, EXTRACT_32BITS(cp), OFPPF_U);
1733 cp += 4;
1734 /* pad */
1735 ND_TCHECK2(*cp, 4);
1736 return cp + 4;
1737  
1738 trunc:
1739 ND_PRINT((ndo, "%s", tstr));
1740 return ep;
1741 }
1742  
1743 /* [OF10] Section 5.3.5 */
1744 static const u_char *
1745 of10_stats_request_print(netdissect_options *ndo,
1746 const u_char *cp, const u_char *ep, u_int len)
1747 {
1748 const u_char *cp0 = cp;
1749 const u_int len0 = len;
1750 uint16_t type;
1751  
1752 /* type */
1753 ND_TCHECK2(*cp, 2);
1754 type = EXTRACT_16BITS(cp);
1755 cp += 2;
1756 ND_PRINT((ndo, "\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type)));
1757 /* flags */
1758 ND_TCHECK2(*cp, 2);
1759 ND_PRINT((ndo, ", flags 0x%04x", EXTRACT_16BITS(cp)));
1760 if (EXTRACT_16BITS(cp))
1761 ND_PRINT((ndo, " (bogus)"));
1762 cp += 2;
1763 /* type-specific body of one of fixed lengths */
1764 len -= OF_STATS_REQUEST_LEN;
1765 switch(type) {
1766 case OFPST_DESC:
1767 case OFPST_TABLE:
1768 if (len)
1769 goto corrupt;
1770 return cp;
1771 case OFPST_FLOW:
1772 case OFPST_AGGREGATE:
1773 if (len != OF_FLOW_STATS_REQUEST_LEN)
1774 goto corrupt;
1775 /* match */
1776 if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
1777 return ep; /* end of snapshot */
1778 /* table_id */
1779 ND_TCHECK2(*cp, 1);
1780 ND_PRINT((ndo, "\n\t table_id %s", tok2str(tableid_str, "%u", *cp)));
1781 cp += 1;
1782 /* pad */
1783 ND_TCHECK2(*cp, 1);
1784 cp += 1;
1785 /* out_port */
1786 ND_TCHECK2(*cp, 2);
1787 ND_PRINT((ndo, ", out_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1788 return cp + 2;
1789 case OFPST_PORT:
1790 if (len != OF_PORT_STATS_REQUEST_LEN)
1791 goto corrupt;
1792 /* port_no */
1793 ND_TCHECK2(*cp, 2);
1794 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1795 cp += 2;
1796 /* pad */
1797 ND_TCHECK2(*cp, 6);
1798 return cp + 6;
1799 case OFPST_QUEUE:
1800 if (len != OF_QUEUE_STATS_REQUEST_LEN)
1801 goto corrupt;
1802 /* port_no */
1803 ND_TCHECK2(*cp, 2);
1804 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
1805 cp += 2;
1806 /* pad */
1807 ND_TCHECK2(*cp, 2);
1808 cp += 2;
1809 /* queue_id */
1810 ND_TCHECK2(*cp, 4);
1811 ND_PRINT((ndo, ", queue_id %s", tok2str(ofpq_str, "%u", EXTRACT_32BITS(cp))));
1812 return cp + 4;
1813 case OFPST_VENDOR:
1814 return of10_vendor_data_print(ndo, cp, ep, len);
1815 }
1816 return cp;
1817  
1818 corrupt: /* skip the message body */
1819 ND_PRINT((ndo, "%s", cstr));
1820 ND_TCHECK2(*cp0, len0);
1821 return cp0 + len0;
1822 trunc:
1823 ND_PRINT((ndo, "%s", tstr));
1824 return ep;
1825 }
1826  
1827 /* ibid */
1828 static const u_char *
1829 of10_desc_stats_reply_print(netdissect_options *ndo,
1830 const u_char *cp, const u_char *ep, const u_int len)
1831 {
1832 if (len != OF_DESC_STATS_LEN)
1833 goto corrupt;
1834 /* mfr_desc */
1835 ND_TCHECK2(*cp, DESC_STR_LEN);
1836 ND_PRINT((ndo, "\n\t mfr_desc '"));
1837 fn_print(ndo, cp, cp + DESC_STR_LEN);
1838 ND_PRINT((ndo, "'"));
1839 cp += DESC_STR_LEN;
1840 /* hw_desc */
1841 ND_TCHECK2(*cp, DESC_STR_LEN);
1842 ND_PRINT((ndo, "\n\t hw_desc '"));
1843 fn_print(ndo, cp, cp + DESC_STR_LEN);
1844 ND_PRINT((ndo, "'"));
1845 cp += DESC_STR_LEN;
1846 /* sw_desc */
1847 ND_TCHECK2(*cp, DESC_STR_LEN);
1848 ND_PRINT((ndo, "\n\t sw_desc '"));
1849 fn_print(ndo, cp, cp + DESC_STR_LEN);
1850 ND_PRINT((ndo, "'"));
1851 cp += DESC_STR_LEN;
1852 /* serial_num */
1853 ND_TCHECK2(*cp, SERIAL_NUM_LEN);
1854 ND_PRINT((ndo, "\n\t serial_num '"));
1855 fn_print(ndo, cp, cp + SERIAL_NUM_LEN);
1856 ND_PRINT((ndo, "'"));
1857 cp += SERIAL_NUM_LEN;
1858 /* dp_desc */
1859 ND_TCHECK2(*cp, DESC_STR_LEN);
1860 ND_PRINT((ndo, "\n\t dp_desc '"));
1861 fn_print(ndo, cp, cp + DESC_STR_LEN);
1862 ND_PRINT((ndo, "'"));
1863 return cp + DESC_STR_LEN;
1864  
1865 corrupt: /* skip the message body */
1866 ND_PRINT((ndo, "%s", cstr));
1867 ND_TCHECK2(*cp, len);
1868 return cp + len;
1869 trunc:
1870 ND_PRINT((ndo, "%s", tstr));
1871 return ep;
1872 }
1873  
1874 /* ibid */
1875 static const u_char *
1876 of10_flow_stats_reply_print(netdissect_options *ndo,
1877 const u_char *cp, const u_char *ep, u_int len)
1878 {
1879 const u_char *cp0 = cp;
1880 const u_int len0 = len;
1881 uint16_t entry_len;
1882  
1883 while (len) {
1884 if (len < OF_FLOW_STATS_LEN)
1885 goto corrupt;
1886 /* length */
1887 ND_TCHECK2(*cp, 2);
1888 entry_len = EXTRACT_16BITS(cp);
1889 ND_PRINT((ndo, "\n\t length %u", entry_len));
1890 if (entry_len < OF_FLOW_STATS_LEN || entry_len > len)
1891 goto corrupt;
1892 cp += 2;
1893 /* table_id */
1894 ND_TCHECK2(*cp, 1);
1895 ND_PRINT((ndo, ", table_id %s", tok2str(tableid_str, "%u", *cp)));
1896 cp += 1;
1897 /* pad */
1898 ND_TCHECK2(*cp, 1);
1899 cp += 1;
1900 /* match */
1901 if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
1902 return ep; /* end of snapshot */
1903 /* duration_sec */
1904 ND_TCHECK2(*cp, 4);
1905 ND_PRINT((ndo, "\n\t duration_sec %u", EXTRACT_32BITS(cp)));
1906 cp += 4;
1907 /* duration_nsec */
1908 ND_TCHECK2(*cp, 4);
1909 ND_PRINT((ndo, ", duration_nsec %u", EXTRACT_32BITS(cp)));
1910 cp += 4;
1911 /* priority */
1912 ND_TCHECK2(*cp, 2);
1913 ND_PRINT((ndo, ", priority %u", EXTRACT_16BITS(cp)));
1914 cp += 2;
1915 /* idle_timeout */
1916 ND_TCHECK2(*cp, 2);
1917 ND_PRINT((ndo, ", idle_timeout %u", EXTRACT_16BITS(cp)));
1918 cp += 2;
1919 /* hard_timeout */
1920 ND_TCHECK2(*cp, 2);
1921 ND_PRINT((ndo, ", hard_timeout %u", EXTRACT_16BITS(cp)));
1922 cp += 2;
1923 /* pad2 */
1924 ND_TCHECK2(*cp, 6);
1925 cp += 6;
1926 /* cookie */
1927 ND_TCHECK2(*cp, 8);
1928 ND_PRINT((ndo, ", cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)));
1929 cp += 8;
1930 /* packet_count */
1931 ND_TCHECK2(*cp, 8);
1932 ND_PRINT((ndo, ", packet_count %" PRIu64, EXTRACT_64BITS(cp)));
1933 cp += 8;
1934 /* byte_count */
1935 ND_TCHECK2(*cp, 8);
1936 ND_PRINT((ndo, ", byte_count %" PRIu64, EXTRACT_64BITS(cp)));
1937 cp += 8;
1938 /* actions */
1939 if (ep == (cp = of10_actions_print(ndo, "\n\t ", cp, ep, entry_len - OF_FLOW_STATS_LEN)))
1940 return ep; /* end of snapshot */
1941  
1942 len -= entry_len;
1943 } /* while */
1944 return cp;
1945  
1946 corrupt: /* skip the rest of flow statistics entries */
1947 ND_PRINT((ndo, "%s", cstr));
1948 ND_TCHECK2(*cp0, len0);
1949 return cp0 + len0;
1950 trunc:
1951 ND_PRINT((ndo, "%s", tstr));
1952 return ep;
1953 }
1954  
1955 /* ibid */
1956 static const u_char *
1957 of10_aggregate_stats_reply_print(netdissect_options *ndo,
1958 const u_char *cp, const u_char *ep,
1959 const u_int len)
1960 {
1961 if (len != OF_AGGREGATE_STATS_REPLY_LEN)
1962 goto corrupt;
1963 /* packet_count */
1964 ND_TCHECK2(*cp, 8);
1965 ND_PRINT((ndo, "\n\t packet_count %" PRIu64, EXTRACT_64BITS(cp)));
1966 cp += 8;
1967 /* byte_count */
1968 ND_TCHECK2(*cp, 8);
1969 ND_PRINT((ndo, ", byte_count %" PRIu64, EXTRACT_64BITS(cp)));
1970 cp += 8;
1971 /* flow_count */
1972 ND_TCHECK2(*cp, 4);
1973 ND_PRINT((ndo, ", flow_count %u", EXTRACT_32BITS(cp)));
1974 cp += 4;
1975 /* pad */
1976 ND_TCHECK2(*cp, 4);
1977 return cp + 4;
1978  
1979 corrupt: /* skip the message body */
1980 ND_PRINT((ndo, "%s", cstr));
1981 ND_TCHECK2(*cp, len);
1982 return cp + len;
1983 trunc:
1984 ND_PRINT((ndo, "%s", tstr));
1985 return ep;
1986 }
1987  
1988 /* ibid */
1989 static const u_char *
1990 of10_table_stats_reply_print(netdissect_options *ndo,
1991 const u_char *cp, const u_char *ep, u_int len)
1992 {
1993 const u_char *cp0 = cp;
1994 const u_int len0 = len;
1995  
1996 while (len) {
1997 if (len < OF_TABLE_STATS_LEN)
1998 goto corrupt;
1999 /* table_id */
2000 ND_TCHECK2(*cp, 1);
2001 ND_PRINT((ndo, "\n\t table_id %s", tok2str(tableid_str, "%u", *cp)));
2002 cp += 1;
2003 /* pad */
2004 ND_TCHECK2(*cp, 3);
2005 cp += 3;
2006 /* name */
2007 ND_TCHECK2(*cp, OFP_MAX_TABLE_NAME_LEN);
2008 ND_PRINT((ndo, ", name '"));
2009 fn_print(ndo, cp, cp + OFP_MAX_TABLE_NAME_LEN);
2010 ND_PRINT((ndo, "'"));
2011 cp += OFP_MAX_TABLE_NAME_LEN;
2012 /* wildcards */
2013 ND_TCHECK2(*cp, 4);
2014 ND_PRINT((ndo, "\n\t wildcards 0x%08x", EXTRACT_32BITS(cp)));
2015 of10_bitmap_print(ndo, ofpfw_bm, EXTRACT_32BITS(cp), OFPFW_U);
2016 cp += 4;
2017 /* max_entries */
2018 ND_TCHECK2(*cp, 4);
2019 ND_PRINT((ndo, "\n\t max_entries %u", EXTRACT_32BITS(cp)));
2020 cp += 4;
2021 /* active_count */
2022 ND_TCHECK2(*cp, 4);
2023 ND_PRINT((ndo, ", active_count %u", EXTRACT_32BITS(cp)));
2024 cp += 4;
2025 /* lookup_count */
2026 ND_TCHECK2(*cp, 8);
2027 ND_PRINT((ndo, ", lookup_count %" PRIu64, EXTRACT_64BITS(cp)));
2028 cp += 8;
2029 /* matched_count */
2030 ND_TCHECK2(*cp, 8);
2031 ND_PRINT((ndo, ", matched_count %" PRIu64, EXTRACT_64BITS(cp)));
2032 cp += 8;
2033  
2034 len -= OF_TABLE_STATS_LEN;
2035 } /* while */
2036 return cp;
2037  
2038 corrupt: /* skip the undersized trailing data */
2039 ND_PRINT((ndo, "%s", cstr));
2040 ND_TCHECK2(*cp0, len0);
2041 return cp0 + len0;
2042 trunc:
2043 ND_PRINT((ndo, "%s", tstr));
2044 return ep;
2045 }
2046  
2047 /* ibid */
2048 static const u_char *
2049 of10_port_stats_reply_print(netdissect_options *ndo,
2050 const u_char *cp, const u_char *ep, u_int len)
2051 {
2052 const u_char *cp0 = cp;
2053 const u_int len0 = len;
2054  
2055 while (len) {
2056 if (len < OF_PORT_STATS_LEN)
2057 goto corrupt;
2058 /* port_no */
2059 ND_TCHECK2(*cp, 2);
2060 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
2061 cp += 2;
2062 if (ndo->ndo_vflag < 2) {
2063 ND_TCHECK2(*cp, OF_PORT_STATS_LEN - 2);
2064 cp += OF_PORT_STATS_LEN - 2;
2065 goto next_port;
2066 }
2067 /* pad */
2068 ND_TCHECK2(*cp, 6);
2069 cp += 6;
2070 /* rx_packets */
2071 ND_TCHECK2(*cp, 8);
2072 ND_PRINT((ndo, ", rx_packets %" PRIu64, EXTRACT_64BITS(cp)));
2073 cp += 8;
2074 /* tx_packets */
2075 ND_TCHECK2(*cp, 8);
2076 ND_PRINT((ndo, ", tx_packets %" PRIu64, EXTRACT_64BITS(cp)));
2077 cp += 8;
2078 /* rx_bytes */
2079 ND_TCHECK2(*cp, 8);
2080 ND_PRINT((ndo, ", rx_bytes %" PRIu64, EXTRACT_64BITS(cp)));
2081 cp += 8;
2082 /* tx_bytes */
2083 ND_TCHECK2(*cp, 8);
2084 ND_PRINT((ndo, ", tx_bytes %" PRIu64, EXTRACT_64BITS(cp)));
2085 cp += 8;
2086 /* rx_dropped */
2087 ND_TCHECK2(*cp, 8);
2088 ND_PRINT((ndo, ", rx_dropped %" PRIu64, EXTRACT_64BITS(cp)));
2089 cp += 8;
2090 /* tx_dropped */
2091 ND_TCHECK2(*cp, 8);
2092 ND_PRINT((ndo, ", tx_dropped %" PRIu64, EXTRACT_64BITS(cp)));
2093 cp += 8;
2094 /* rx_errors */
2095 ND_TCHECK2(*cp, 8);
2096 ND_PRINT((ndo, ", rx_errors %" PRIu64, EXTRACT_64BITS(cp)));
2097 cp += 8;
2098 /* tx_errors */
2099 ND_TCHECK2(*cp, 8);
2100 ND_PRINT((ndo, ", tx_errors %" PRIu64, EXTRACT_64BITS(cp)));
2101 cp += 8;
2102 /* rx_frame_err */
2103 ND_TCHECK2(*cp, 8);
2104 ND_PRINT((ndo, ", rx_frame_err %" PRIu64, EXTRACT_64BITS(cp)));
2105 cp += 8;
2106 /* rx_over_err */
2107 ND_TCHECK2(*cp, 8);
2108 ND_PRINT((ndo, ", rx_over_err %" PRIu64, EXTRACT_64BITS(cp)));
2109 cp += 8;
2110 /* rx_crc_err */
2111 ND_TCHECK2(*cp, 8);
2112 ND_PRINT((ndo, ", rx_crc_err %" PRIu64, EXTRACT_64BITS(cp)));
2113 cp += 8;
2114 /* collisions */
2115 ND_TCHECK2(*cp, 8);
2116 ND_PRINT((ndo, ", collisions %" PRIu64, EXTRACT_64BITS(cp)));
2117 cp += 8;
2118 next_port:
2119 len -= OF_PORT_STATS_LEN;
2120 } /* while */
2121 return cp;
2122  
2123 corrupt: /* skip the undersized trailing data */
2124 ND_PRINT((ndo, "%s", cstr));
2125 ND_TCHECK2(*cp0, len0);
2126 return cp0 + len0;
2127 trunc:
2128 ND_PRINT((ndo, "%s", tstr));
2129 return ep;
2130 }
2131  
2132 /* ibid */
2133 static const u_char *
2134 of10_queue_stats_reply_print(netdissect_options *ndo,
2135 const u_char *cp, const u_char *ep, u_int len)
2136 {
2137 const u_char *cp0 = cp;
2138 const u_int len0 = len;
2139  
2140 while (len) {
2141 if (len < OF_QUEUE_STATS_LEN)
2142 goto corrupt;
2143 /* port_no */
2144 ND_TCHECK2(*cp, 2);
2145 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
2146 cp += 2;
2147 /* pad */
2148 ND_TCHECK2(*cp, 2);
2149 cp += 2;
2150 /* queue_id */
2151 ND_TCHECK2(*cp, 4);
2152 ND_PRINT((ndo, ", queue_id %u", EXTRACT_32BITS(cp)));
2153 cp += 4;
2154 /* tx_bytes */
2155 ND_TCHECK2(*cp, 8);
2156 ND_PRINT((ndo, ", tx_bytes %" PRIu64, EXTRACT_64BITS(cp)));
2157 cp += 8;
2158 /* tx_packets */
2159 ND_TCHECK2(*cp, 8);
2160 ND_PRINT((ndo, ", tx_packets %" PRIu64, EXTRACT_64BITS(cp)));
2161 cp += 8;
2162 /* tx_errors */
2163 ND_TCHECK2(*cp, 8);
2164 ND_PRINT((ndo, ", tx_errors %" PRIu64, EXTRACT_64BITS(cp)));
2165 cp += 8;
2166  
2167 len -= OF_QUEUE_STATS_LEN;
2168 } /* while */
2169 return cp;
2170  
2171 corrupt: /* skip the undersized trailing data */
2172 ND_PRINT((ndo, "%s", cstr));
2173 ND_TCHECK2(*cp0, len0);
2174 return cp0 + len0;
2175 trunc:
2176 ND_PRINT((ndo, "%s", tstr));
2177 return ep;
2178 }
2179  
2180 /* ibid */
2181 static const u_char *
2182 of10_stats_reply_print(netdissect_options *ndo,
2183 const u_char *cp, const u_char *ep, const u_int len)
2184 {
2185 const u_char *cp0 = cp;
2186 uint16_t type;
2187  
2188 /* type */
2189 ND_TCHECK2(*cp, 2);
2190 type = EXTRACT_16BITS(cp);
2191 ND_PRINT((ndo, "\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type)));
2192 cp += 2;
2193 /* flags */
2194 ND_TCHECK2(*cp, 2);
2195 ND_PRINT((ndo, ", flags 0x%04x", EXTRACT_16BITS(cp)));
2196 of10_bitmap_print(ndo, ofpsf_reply_bm, EXTRACT_16BITS(cp), OFPSF_REPLY_U);
2197 cp += 2;
2198  
2199 if (ndo->ndo_vflag > 0) {
2200 const u_char *(*decoder)(netdissect_options *, const u_char *, const u_char *, u_int) =
2201 type == OFPST_DESC ? of10_desc_stats_reply_print :
2202 type == OFPST_FLOW ? of10_flow_stats_reply_print :
2203 type == OFPST_AGGREGATE ? of10_aggregate_stats_reply_print :
2204 type == OFPST_TABLE ? of10_table_stats_reply_print :
2205 type == OFPST_PORT ? of10_port_stats_reply_print :
2206 type == OFPST_QUEUE ? of10_queue_stats_reply_print :
2207 type == OFPST_VENDOR ? of10_vendor_data_print :
2208 NULL;
2209 if (decoder != NULL)
2210 return decoder(ndo, cp, ep, len - OF_STATS_REPLY_LEN);
2211 }
2212 ND_TCHECK2(*cp0, len);
2213 return cp0 + len;
2214  
2215 trunc:
2216 ND_PRINT((ndo, "%s", tstr));
2217 return ep;
2218 }
2219  
2220 /* [OF10] Section 5.3.6 */
2221 static const u_char *
2222 of10_packet_out_print(netdissect_options *ndo,
2223 const u_char *cp, const u_char *ep, const u_int len)
2224 {
2225 const u_char *cp0 = cp;
2226 const u_int len0 = len;
2227 uint16_t actions_len;
2228  
2229 /* buffer_id */
2230 ND_TCHECK2(*cp, 4);
2231 ND_PRINT((ndo, "\n\t buffer_id 0x%08x", EXTRACT_32BITS(cp)));
2232 cp += 4;
2233 /* in_port */
2234 ND_TCHECK2(*cp, 2);
2235 ND_PRINT((ndo, ", in_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
2236 cp += 2;
2237 /* actions_len */
2238 ND_TCHECK2(*cp, 2);
2239 actions_len = EXTRACT_16BITS(cp);
2240 cp += 2;
2241 if (actions_len > len - OF_PACKET_OUT_LEN)
2242 goto corrupt;
2243 /* actions */
2244 if (ep == (cp = of10_actions_print(ndo, "\n\t ", cp, ep, actions_len)))
2245 return ep; /* end of snapshot */
2246 /* data */
2247 return of10_packet_data_print(ndo, cp, ep, len - OF_PACKET_OUT_LEN - actions_len);
2248  
2249 corrupt: /* skip the rest of the message body */
2250 ND_PRINT((ndo, "%s", cstr));
2251 ND_TCHECK2(*cp0, len0);
2252 return cp0 + len0;
2253 trunc:
2254 ND_PRINT((ndo, "%s", tstr));
2255 return ep;
2256 }
2257  
2258 /* [OF10] Section 5.4.1 */
2259 static const u_char *
2260 of10_packet_in_print(netdissect_options *ndo,
2261 const u_char *cp, const u_char *ep, const u_int len)
2262 {
2263 /* buffer_id */
2264 ND_TCHECK2(*cp, 4);
2265 ND_PRINT((ndo, "\n\t buffer_id %s", tok2str(bufferid_str, "0x%08x", EXTRACT_32BITS(cp))));
2266 cp += 4;
2267 /* total_len */
2268 ND_TCHECK2(*cp, 2);
2269 ND_PRINT((ndo, ", total_len %u", EXTRACT_16BITS(cp)));
2270 cp += 2;
2271 /* in_port */
2272 ND_TCHECK2(*cp, 2);
2273 ND_PRINT((ndo, ", in_port %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
2274 cp += 2;
2275 /* reason */
2276 ND_TCHECK2(*cp, 1);
2277 ND_PRINT((ndo, ", reason %s", tok2str(ofpr_str, "invalid (0x%02x)", *cp)));
2278 cp += 1;
2279 /* pad */
2280 ND_TCHECK2(*cp, 1);
2281 cp += 1;
2282 /* data */
2283 /* 2 mock octets count in OF_PACKET_IN_LEN but not in len */
2284 return of10_packet_data_print(ndo, cp, ep, len - (OF_PACKET_IN_LEN - 2));
2285  
2286 trunc:
2287 ND_PRINT((ndo, "%s", tstr));
2288 return ep;
2289 }
2290  
2291 /* [OF10] Section 5.4.2 */
2292 static const u_char *
2293 of10_flow_removed_print(netdissect_options *ndo,
2294 const u_char *cp, const u_char *ep)
2295 {
2296 /* match */
2297 if (ep == (cp = of10_match_print(ndo, "\n\t ", cp, ep)))
2298 return ep; /* end of snapshot */
2299 /* cookie */
2300 ND_TCHECK2(*cp, 8);
2301 ND_PRINT((ndo, "\n\t cookie 0x%016" PRIx64, EXTRACT_64BITS(cp)));
2302 cp += 8;
2303 /* priority */
2304 ND_TCHECK2(*cp, 2);
2305 if (EXTRACT_16BITS(cp))
2306 ND_PRINT((ndo, ", priority %u", EXTRACT_16BITS(cp)));
2307 cp += 2;
2308 /* reason */
2309 ND_TCHECK2(*cp, 1);
2310 ND_PRINT((ndo, ", reason %s", tok2str(ofprr_str, "unknown (0x%02x)", *cp)));
2311 cp += 1;
2312 /* pad */
2313 ND_TCHECK2(*cp, 1);
2314 cp += 1;
2315 /* duration_sec */
2316 ND_TCHECK2(*cp, 4);
2317 ND_PRINT((ndo, ", duration_sec %u", EXTRACT_32BITS(cp)));
2318 cp += 4;
2319 /* duration_nsec */
2320 ND_TCHECK2(*cp, 4);
2321 ND_PRINT((ndo, ", duration_nsec %u", EXTRACT_32BITS(cp)));
2322 cp += 4;
2323 /* idle_timeout */
2324 ND_TCHECK2(*cp, 2);
2325 if (EXTRACT_16BITS(cp))
2326 ND_PRINT((ndo, ", idle_timeout %u", EXTRACT_16BITS(cp)));
2327 cp += 2;
2328 /* pad2 */
2329 ND_TCHECK2(*cp, 2);
2330 cp += 2;
2331 /* packet_count */
2332 ND_TCHECK2(*cp, 8);
2333 ND_PRINT((ndo, ", packet_count %" PRIu64, EXTRACT_64BITS(cp)));
2334 cp += 8;
2335 /* byte_count */
2336 ND_TCHECK2(*cp, 8);
2337 ND_PRINT((ndo, ", byte_count %" PRIu64, EXTRACT_64BITS(cp)));
2338 return cp + 8;
2339  
2340 trunc:
2341 ND_PRINT((ndo, "%s", tstr));
2342 return ep;
2343 }
2344  
2345 /* [OF10] Section 5.4.4 */
2346 static const u_char *
2347 of10_error_print(netdissect_options *ndo,
2348 const u_char *cp, const u_char *ep, const u_int len)
2349 {
2350 uint16_t type;
2351 const struct tok *code_str;
2352  
2353 /* type */
2354 ND_TCHECK2(*cp, 2);
2355 type = EXTRACT_16BITS(cp);
2356 cp += 2;
2357 ND_PRINT((ndo, "\n\t type %s", tok2str(ofpet_str, "invalid (0x%04x)", type)));
2358 /* code */
2359 ND_TCHECK2(*cp, 2);
2360 code_str =
2361 type == OFPET_HELLO_FAILED ? ofphfc_str :
2362 type == OFPET_BAD_REQUEST ? ofpbrc_str :
2363 type == OFPET_BAD_ACTION ? ofpbac_str :
2364 type == OFPET_FLOW_MOD_FAILED ? ofpfmfc_str :
2365 type == OFPET_PORT_MOD_FAILED ? ofppmfc_str :
2366 type == OFPET_QUEUE_OP_FAILED ? ofpqofc_str :
2367 empty_str;
2368 ND_PRINT((ndo, ", code %s", tok2str(code_str, "invalid (0x%04x)", EXTRACT_16BITS(cp))));
2369 cp += 2;
2370 /* data */
2371 return of10_data_print(ndo, cp, ep, len - OF_ERROR_MSG_LEN);
2372  
2373 trunc:
2374 ND_PRINT((ndo, "%s", tstr));
2375 return ep;
2376 }
2377  
2378 const u_char *
2379 of10_header_body_print(netdissect_options *ndo,
2380 const u_char *cp, const u_char *ep, const uint8_t type,
2381 const uint16_t len, const uint32_t xid)
2382 {
2383 const u_char *cp0 = cp;
2384 const u_int len0 = len;
2385 /* Thus far message length is not less than the basic header size, but most
2386 * message types have additional assorted constraints on the length. Wherever
2387 * possible, check that message length meets the constraint, in remaining
2388 * cases check that the length is OK to begin decoding and leave any final
2389 * verification up to a lower-layer function. When the current message is
2390 * corrupt, proceed to the next message. */
2391  
2392 /* [OF10] Section 5.1 */
2393 ND_PRINT((ndo, "\n\tversion 1.0, type %s, length %u, xid 0x%08x",
2394 tok2str(ofpt_str, "invalid (0x%02x)", type), len, xid));
2395 switch (type) {
2396 /* OpenFlow header only. */
2397 case OFPT_FEATURES_REQUEST: /* [OF10] Section 5.3.1 */
2398 case OFPT_GET_CONFIG_REQUEST: /* [OF10] Section 5.3.2 */
2399 case OFPT_BARRIER_REQUEST: /* [OF10] Section 5.3.7 */
2400 case OFPT_BARRIER_REPLY: /* ibid */
2401 if (len != OF_HEADER_LEN)
2402 goto corrupt;
2403 break;
2404  
2405 /* OpenFlow header and fixed-size message body. */
2406 case OFPT_SET_CONFIG: /* [OF10] Section 5.3.2 */
2407 case OFPT_GET_CONFIG_REPLY: /* ibid */
2408 if (len != OF_SWITCH_CONFIG_LEN)
2409 goto corrupt;
2410 if (ndo->ndo_vflag < 1)
2411 goto next_message;
2412 /* flags */
2413 ND_TCHECK2(*cp, 2);
2414 ND_PRINT((ndo, "\n\t flags %s", tok2str(ofp_config_str, "invalid (0x%04x)", EXTRACT_16BITS(cp))));
2415 cp += 2;
2416 /* miss_send_len */
2417 ND_TCHECK2(*cp, 2);
2418 ND_PRINT((ndo, ", miss_send_len %u", EXTRACT_16BITS(cp)));
2419 return cp + 2;
2420 case OFPT_PORT_MOD:
2421 if (len != OF_PORT_MOD_LEN)
2422 goto corrupt;
2423 if (ndo->ndo_vflag < 1)
2424 goto next_message;
2425 return of10_port_mod_print(ndo, cp, ep);
2426 case OFPT_QUEUE_GET_CONFIG_REQUEST: /* [OF10] Section 5.3.4 */
2427 if (len != OF_QUEUE_GET_CONFIG_REQUEST_LEN)
2428 goto corrupt;
2429 if (ndo->ndo_vflag < 1)
2430 goto next_message;
2431 /* port */
2432 ND_TCHECK2(*cp, 2);
2433 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
2434 cp += 2;
2435 /* pad */
2436 ND_TCHECK2(*cp, 2);
2437 return cp + 2;
2438 case OFPT_FLOW_REMOVED:
2439 if (len != OF_FLOW_REMOVED_LEN)
2440 goto corrupt;
2441 if (ndo->ndo_vflag < 1)
2442 goto next_message;
2443 return of10_flow_removed_print(ndo, cp, ep);
2444 case OFPT_PORT_STATUS: /* [OF10] Section 5.4.3 */
2445 if (len != OF_PORT_STATUS_LEN)
2446 goto corrupt;
2447 if (ndo->ndo_vflag < 1)
2448 goto next_message;
2449 /* reason */
2450 ND_TCHECK2(*cp, 1);
2451 ND_PRINT((ndo, "\n\t reason %s", tok2str(ofppr_str, "invalid (0x%02x)", *cp)));
2452 cp += 1;
2453 /* pad */
2454 ND_TCHECK2(*cp, 7);
2455 cp += 7;
2456 /* desc */
2457 return of10_phy_ports_print(ndo, cp, ep, OF_PHY_PORT_LEN);
2458  
2459 /* OpenFlow header, fixed-size message body and n * fixed-size data units. */
2460 case OFPT_FEATURES_REPLY:
2461 if (len < OF_SWITCH_FEATURES_LEN)
2462 goto corrupt;
2463 if (ndo->ndo_vflag < 1)
2464 goto next_message;
2465 return of10_features_reply_print(ndo, cp, ep, len);
2466  
2467 /* OpenFlow header and variable-size data. */
2468 case OFPT_HELLO: /* [OF10] Section 5.5.1 */
2469 case OFPT_ECHO_REQUEST: /* [OF10] Section 5.5.2 */
2470 case OFPT_ECHO_REPLY: /* [OF10] Section 5.5.3 */
2471 if (ndo->ndo_vflag < 1)
2472 goto next_message;
2473 return of10_data_print(ndo, cp, ep, len - OF_HEADER_LEN);
2474  
2475 /* OpenFlow header, fixed-size message body and variable-size data. */
2476 case OFPT_ERROR:
2477 if (len < OF_ERROR_MSG_LEN)
2478 goto corrupt;
2479 if (ndo->ndo_vflag < 1)
2480 goto next_message;
2481 return of10_error_print(ndo, cp, ep, len);
2482 case OFPT_VENDOR:
2483 /* [OF10] Section 5.5.4 */
2484 if (len < OF_VENDOR_HEADER_LEN)
2485 goto corrupt;
2486 if (ndo->ndo_vflag < 1)
2487 goto next_message;
2488 return of10_vendor_message_print(ndo, cp, ep, len - OF_HEADER_LEN);
2489 case OFPT_PACKET_IN:
2490 /* 2 mock octets count in OF_PACKET_IN_LEN but not in len */
2491 if (len < OF_PACKET_IN_LEN - 2)
2492 goto corrupt;
2493 if (ndo->ndo_vflag < 1)
2494 goto next_message;
2495 return of10_packet_in_print(ndo, cp, ep, len);
2496  
2497 /* a. OpenFlow header. */
2498 /* b. OpenFlow header and one of the fixed-size message bodies. */
2499 /* c. OpenFlow header, fixed-size message body and variable-size data. */
2500 case OFPT_STATS_REQUEST:
2501 if (len < OF_STATS_REQUEST_LEN)
2502 goto corrupt;
2503 if (ndo->ndo_vflag < 1)
2504 goto next_message;
2505 return of10_stats_request_print(ndo, cp, ep, len);
2506  
2507 /* a. OpenFlow header and fixed-size message body. */
2508 /* b. OpenFlow header and n * fixed-size data units. */
2509 /* c. OpenFlow header and n * variable-size data units. */
2510 /* d. OpenFlow header, fixed-size message body and variable-size data. */
2511 case OFPT_STATS_REPLY:
2512 if (len < OF_STATS_REPLY_LEN)
2513 goto corrupt;
2514 if (ndo->ndo_vflag < 1)
2515 goto next_message;
2516 return of10_stats_reply_print(ndo, cp, ep, len);
2517  
2518 /* OpenFlow header and n * variable-size data units and variable-size data. */
2519 case OFPT_PACKET_OUT:
2520 if (len < OF_PACKET_OUT_LEN)
2521 goto corrupt;
2522 if (ndo->ndo_vflag < 1)
2523 goto next_message;
2524 return of10_packet_out_print(ndo, cp, ep, len);
2525  
2526 /* OpenFlow header, fixed-size message body and n * variable-size data units. */
2527 case OFPT_FLOW_MOD:
2528 if (len < OF_FLOW_MOD_LEN)
2529 goto corrupt;
2530 if (ndo->ndo_vflag < 1)
2531 goto next_message;
2532 return of10_flow_mod_print(ndo, cp, ep, len);
2533  
2534 /* OpenFlow header, fixed-size message body and n * variable-size data units. */
2535 case OFPT_QUEUE_GET_CONFIG_REPLY: /* [OF10] Section 5.3.4 */
2536 if (len < OF_QUEUE_GET_CONFIG_REPLY_LEN)
2537 goto corrupt;
2538 if (ndo->ndo_vflag < 1)
2539 goto next_message;
2540 /* port */
2541 ND_TCHECK2(*cp, 2);
2542 ND_PRINT((ndo, "\n\t port_no %s", tok2str(ofpp_str, "%u", EXTRACT_16BITS(cp))));
2543 cp += 2;
2544 /* pad */
2545 ND_TCHECK2(*cp, 6);
2546 cp += 6;
2547 /* queues */
2548 return of10_queues_print(ndo, cp, ep, len - OF_QUEUE_GET_CONFIG_REPLY_LEN);
2549 } /* switch (type) */
2550 goto next_message;
2551  
2552 corrupt: /* skip the message body */
2553 ND_PRINT((ndo, "%s", cstr));
2554 next_message:
2555 ND_TCHECK2(*cp0, len0 - OF_HEADER_LEN);
2556 return cp0 + len0 - OF_HEADER_LEN;
2557 trunc:
2558 ND_PRINT((ndo, "%s", tstr));
2559 return ep;
2560 }