xref: /freebsd/contrib/tcpdump/print-openflow-1.0.c (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
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] https://www.opennetworking.org/wp-content/uploads/2013/04/openflow-spec-v1.0.0.pdf
10  *
11  * Most functions in this file take the following arguments:
12  * * cp -- the pointer to the first octet to decode
13  * * len -- the declared length of the structure to decode
14  * The convention is that a printer function returns iff the given structure is
15  * completely within the packet buffer; otherwise it processes the part that is
16  * within the buffer, sooner of later takes the "truncated packet" shortcut via
17  * longjmp() and never returns. With that in mind, the function may return
18  * without printing the structure completely if it is invalid or the ndo_vflag
19  * value is not high enough. This way the calling function can try to decode
20  * the next data item.
21  *
22  * Decoding of Ethernet frames nested in OFPT_PACKET_IN and OFPT_PACKET_OUT
23  * messages is done only when the verbosity level set by command-line argument
24  * is "-vvv" or higher. In that case the verbosity level is temporarily
25  * decremented by 3 during the nested frame decoding. For example, running
26  * tcpdump with "-vvvv" will do full decoding of OpenFlow and "-v" decoding of
27  * the nested frames.
28  *
29  * Partial decoding of Big Switch Networks vendor extensions is done after the
30  * oftest (OpenFlow Testing Framework) and Loxigen (library generator) source
31  * code.
32  *
33  *
34  * Copyright (c) 2013 The TCPDUMP project
35  * All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  * 1. Redistributions of source code must retain the above copyright
41  *    notice, this list of conditions and the following disclaimer.
42  * 2. Redistributions in binary form must reproduce the above copyright
43  *    notice, this list of conditions and the following disclaimer in the
44  *    documentation and/or other materials provided with the distribution.
45  *
46  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
47  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
48  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
49  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
50  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
51  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
52  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
53  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
54  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
56  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
57  * POSSIBILITY OF SUCH DAMAGE.
58  */
59 
60 /* \summary: OpenFlow protocol version 1.0 printer */
61 
62 #ifdef HAVE_CONFIG_H
63 #include <config.h>
64 #endif
65 
66 #include "netdissect-stdinc.h"
67 
68 #define ND_LONGJMP_FROM_TCHECK
69 #include "netdissect.h"
70 #include "extract.h"
71 #include "addrtoname.h"
72 #include "ethertype.h"
73 #include "ipproto.h"
74 #include "oui.h"
75 #include "openflow.h"
76 
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 #define OFPT_MAX                      OFPT_QUEUE_GET_CONFIG_REPLY
101 
102 #define OFPPC_PORT_DOWN    (1U <<0)
103 #define OFPPC_NO_STP       (1U <<1)
104 #define OFPPC_NO_RECV      (1U <<2)
105 #define OFPPC_NO_RECV_STP  (1U <<3)
106 #define OFPPC_NO_FLOOD     (1U <<4)
107 #define OFPPC_NO_FWD       (1U <<5)
108 #define OFPPC_NO_PACKET_IN (1U <<6)
109 static const struct tok ofppc_bm[] = {
110 	{ OFPPC_PORT_DOWN,    "PORT_DOWN"    },
111 	{ OFPPC_NO_STP,       "NO_STP"       },
112 	{ OFPPC_NO_RECV,      "NO_RECV"      },
113 	{ OFPPC_NO_RECV_STP,  "NO_RECV_STP"  },
114 	{ OFPPC_NO_FLOOD,     "NO_FLOOD"     },
115 	{ OFPPC_NO_FWD,       "NO_FWD"       },
116 	{ OFPPC_NO_PACKET_IN, "NO_PACKET_IN" },
117 	{ 0, NULL }
118 };
119 #define OFPPC_U (~(OFPPC_PORT_DOWN | OFPPC_NO_STP | OFPPC_NO_RECV | \
120                    OFPPC_NO_RECV_STP | OFPPC_NO_FLOOD | OFPPC_NO_FWD | \
121                    OFPPC_NO_PACKET_IN))
122 
123 /*
124  * [OF10] lists all FPPS_ constants in one enum, but they mean a 1-bit bitmap
125  * in the least significant octet and a 2-bit code point in the next octet.
126  * Remember to mix or to separate these two parts as the context requires.
127  */
128 #define OFPPS_LINK_DOWN   (1U << 0) /* bitmap             */
129 #define OFPPS_STP_LISTEN  (0U << 8) /* code point         */
130 #define OFPPS_STP_LEARN   (1U << 8) /* code point         */
131 #define OFPPS_STP_FORWARD (2U << 8) /* code point         */
132 #define OFPPS_STP_BLOCK   (3U << 8) /* code point         */
133 #define OFPPS_STP_MASK    (3U << 8) /* code point bitmask */
134 static const struct tok ofpps_stp_str[] = {
135 	{ OFPPS_STP_LISTEN,  "STP_LISTEN"  },
136 	{ OFPPS_STP_LEARN,   "STP_LEARN"   },
137 	{ OFPPS_STP_FORWARD, "STP_FORWARD" },
138 	{ OFPPS_STP_BLOCK,   "STP_BLOCK"   },
139 	{ 0, NULL }
140 };
141 #define OFPPS_U (~(OFPPS_LINK_DOWN | OFPPS_STP_LISTEN | OFPPS_STP_LEARN | \
142                    OFPPS_STP_FORWARD | OFPPS_STP_BLOCK))
143 
144 #define OFPP_MAX        0xff00U
145 #define OFPP_IN_PORT    0xfff8U
146 #define OFPP_TABLE      0xfff9U
147 #define OFPP_NORMAL     0xfffaU
148 #define OFPP_FLOOD      0xfffbU
149 #define OFPP_ALL        0xfffcU
150 #define OFPP_CONTROLLER 0xfffdU
151 #define OFPP_LOCAL      0xfffeU
152 #define OFPP_NONE       0xffffU
153 static const struct tok ofpp_str[] = {
154 	{ OFPP_MAX,        "MAX"        },
155 	{ OFPP_IN_PORT,    "IN_PORT"    },
156 	{ OFPP_TABLE,      "TABLE"      },
157 	{ OFPP_NORMAL,     "NORMAL"     },
158 	{ OFPP_FLOOD,      "FLOOD"      },
159 	{ OFPP_ALL,        "ALL"        },
160 	{ OFPP_CONTROLLER, "CONTROLLER" },
161 	{ OFPP_LOCAL,      "LOCAL"      },
162 	{ OFPP_NONE,       "NONE"       },
163 	{ 0, NULL }
164 };
165 
166 #define OFPPF_10MB_HD    (1U << 0)
167 #define OFPPF_10MB_FD    (1U << 1)
168 #define OFPPF_100MB_HD   (1U << 2)
169 #define OFPPF_100MB_FD   (1U << 3)
170 #define OFPPF_1GB_HD     (1U << 4)
171 #define OFPPF_1GB_FD     (1U << 5)
172 #define OFPPF_10GB_FD    (1U << 6)
173 #define OFPPF_COPPER     (1U << 7)
174 #define OFPPF_FIBER      (1U << 8)
175 #define OFPPF_AUTONEG    (1U << 9)
176 #define OFPPF_PAUSE      (1U <<10)
177 #define OFPPF_PAUSE_ASYM (1U <<11)
178 static const struct tok ofppf_bm[] = {
179 	{ OFPPF_10MB_HD,    "10MB_HD"    },
180 	{ OFPPF_10MB_FD,    "10MB_FD"    },
181 	{ OFPPF_100MB_HD,   "100MB_HD"   },
182 	{ OFPPF_100MB_FD,   "100MB_FD"   },
183 	{ OFPPF_1GB_HD,     "1GB_HD"     },
184 	{ OFPPF_1GB_FD,     "1GB_FD"     },
185 	{ OFPPF_10GB_FD,    "10GB_FD"    },
186 	{ OFPPF_COPPER,     "COPPER"     },
187 	{ OFPPF_FIBER,      "FIBER"      },
188 	{ OFPPF_AUTONEG,    "AUTONEG"    },
189 	{ OFPPF_PAUSE,      "PAUSE"      },
190 	{ OFPPF_PAUSE_ASYM, "PAUSE_ASYM" },
191 	{ 0, NULL }
192 };
193 #define OFPPF_U (~(OFPPF_10MB_HD | OFPPF_10MB_FD | OFPPF_100MB_HD | \
194                    OFPPF_100MB_FD | OFPPF_1GB_HD | OFPPF_1GB_FD | \
195                    OFPPF_10GB_FD | OFPPF_COPPER | OFPPF_FIBER | \
196                    OFPPF_AUTONEG | OFPPF_PAUSE | OFPPF_PAUSE_ASYM))
197 
198 #define OFPQT_NONE     0x0000
199 #define OFPQT_MIN_RATE 0x0001
200 static const struct tok ofpqt_str[] = {
201 	{ OFPQT_NONE,     "NONE"     },
202 	{ OFPQT_MIN_RATE, "MIN_RATE" },
203 	{ 0, NULL }
204 };
205 
206 #define OFPFW_IN_PORT      (1U <<0)
207 #define OFPFW_DL_VLAN      (1U <<1)
208 #define OFPFW_DL_SRC       (1U <<2)
209 #define OFPFW_DL_DST       (1U <<3)
210 #define OFPFW_DL_TYPE      (1U <<4)
211 #define OFPFW_NW_PROTO     (1U <<5)
212 #define OFPFW_TP_SRC       (1U <<6)
213 #define OFPFW_TP_DST       (1U <<7)
214 #define OFPFW_NW_SRC_SHIFT 8
215 #define OFPFW_NW_SRC_BITS  6
216 #define OFPFW_NW_SRC_MASK  (((1U <<OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT)
217 #define OFPFW_NW_DST_SHIFT 14
218 #define OFPFW_NW_DST_BITS  6
219 #define OFPFW_NW_DST_MASK  (((1U <<OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT)
220 #define OFPFW_DL_VLAN_PCP  (1U <<20)
221 #define OFPFW_NW_TOS       (1U <<21)
222 #define OFPFW_ALL          ((1U <<22) - 1)
223 static const struct tok ofpfw_bm[] = {
224 	{ OFPFW_IN_PORT,     "IN_PORT"     },
225 	{ OFPFW_DL_VLAN,     "DL_VLAN"     },
226 	{ OFPFW_DL_SRC,      "DL_SRC"      },
227 	{ OFPFW_DL_DST,      "DL_DST"      },
228 	{ OFPFW_DL_TYPE,     "DL_TYPE"     },
229 	{ OFPFW_NW_PROTO,    "NW_PROTO"    },
230 	{ OFPFW_TP_SRC,      "TP_SRC"      },
231 	{ OFPFW_TP_DST,      "TP_DST"      },
232 	{ OFPFW_DL_VLAN_PCP, "DL_VLAN_PCP" },
233 	{ OFPFW_NW_TOS,      "NW_TOS"      },
234 	{ 0, NULL }
235 };
236 /* The above array does not include bits 8~13 (OFPFW_NW_SRC_*) and 14~19
237  * (OFPFW_NW_DST_*), which are not a part of the bitmap and require decoding
238  * other than that of tok2str(). The macro below includes these bits such that
239  * they are not reported as bogus in the decoding. */
240 #define OFPFW_U (~(OFPFW_ALL))
241 
242 #define OFPAT_OUTPUT       0x0000U
243 #define OFPAT_SET_VLAN_VID 0x0001U
244 #define OFPAT_SET_VLAN_PCP 0x0002U
245 #define OFPAT_STRIP_VLAN   0x0003U
246 #define OFPAT_SET_DL_SRC   0x0004U
247 #define OFPAT_SET_DL_DST   0x0005U
248 #define OFPAT_SET_NW_SRC   0x0006U
249 #define OFPAT_SET_NW_DST   0x0007U
250 #define OFPAT_SET_NW_TOS   0x0008U
251 #define OFPAT_SET_TP_SRC   0x0009U
252 #define OFPAT_SET_TP_DST   0x000aU
253 #define OFPAT_ENQUEUE      0x000bU
254 #define OFPAT_VENDOR       0xffffU
255 static const struct tok ofpat_str[] = {
256 	{ OFPAT_OUTPUT,       "OUTPUT"       },
257 	{ OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
258 	{ OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
259 	{ OFPAT_STRIP_VLAN,   "STRIP_VLAN"   },
260 	{ OFPAT_SET_DL_SRC,   "SET_DL_SRC"   },
261 	{ OFPAT_SET_DL_DST,   "SET_DL_DST"   },
262 	{ OFPAT_SET_NW_SRC,   "SET_NW_SRC"   },
263 	{ OFPAT_SET_NW_DST,   "SET_NW_DST"   },
264 	{ OFPAT_SET_NW_TOS,   "SET_NW_TOS"   },
265 	{ OFPAT_SET_TP_SRC,   "SET_TP_SRC"   },
266 	{ OFPAT_SET_TP_DST,   "SET_TP_DST"   },
267 	{ OFPAT_ENQUEUE,      "ENQUEUE"      },
268 	{ OFPAT_VENDOR,       "VENDOR"       },
269 	{ 0, NULL }
270 };
271 
272 /* bit-shifted, w/o vendor action */
273 static const struct tok ofpat_bm[] = {
274 	{ 1U <<OFPAT_OUTPUT,       "OUTPUT"       },
275 	{ 1U <<OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
276 	{ 1U <<OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
277 	{ 1U <<OFPAT_STRIP_VLAN,   "STRIP_VLAN"   },
278 	{ 1U <<OFPAT_SET_DL_SRC,   "SET_DL_SRC"   },
279 	{ 1U <<OFPAT_SET_DL_DST,   "SET_DL_DST"   },
280 	{ 1U <<OFPAT_SET_NW_SRC,   "SET_NW_SRC"   },
281 	{ 1U <<OFPAT_SET_NW_DST,   "SET_NW_DST"   },
282 	{ 1U <<OFPAT_SET_NW_TOS,   "SET_NW_TOS"   },
283 	{ 1U <<OFPAT_SET_TP_SRC,   "SET_TP_SRC"   },
284 	{ 1U <<OFPAT_SET_TP_DST,   "SET_TP_DST"   },
285 	{ 1U <<OFPAT_ENQUEUE,      "ENQUEUE"      },
286 	{ 0, NULL }
287 };
288 #define OFPAT_U (~(1U <<OFPAT_OUTPUT | 1U <<OFPAT_SET_VLAN_VID | \
289                    1U <<OFPAT_SET_VLAN_PCP | 1U <<OFPAT_STRIP_VLAN | \
290                    1U <<OFPAT_SET_DL_SRC | 1U <<OFPAT_SET_DL_DST | \
291                    1U <<OFPAT_SET_NW_SRC | 1U <<OFPAT_SET_NW_DST | \
292                    1U <<OFPAT_SET_NW_TOS | 1U <<OFPAT_SET_TP_SRC | \
293                    1U <<OFPAT_SET_TP_DST | 1U <<OFPAT_ENQUEUE))
294 
295 #define OFPC_FLOW_STATS   (1U <<0)
296 #define OFPC_TABLE_STATS  (1U <<1)
297 #define OFPC_PORT_STATS   (1U <<2)
298 #define OFPC_STP          (1U <<3)
299 #define OFPC_RESERVED     (1U <<4)
300 #define OFPC_IP_REASM     (1U <<5)
301 #define OFPC_QUEUE_STATS  (1U <<6)
302 #define OFPC_ARP_MATCH_IP (1U <<7)
303 static const struct tok ofp_capabilities_bm[] = {
304 	{ OFPC_FLOW_STATS,   "FLOW_STATS"   },
305 	{ OFPC_TABLE_STATS,  "TABLE_STATS"  },
306 	{ OFPC_PORT_STATS,   "PORT_STATS"   },
307 	{ OFPC_STP,          "STP"          },
308 	{ OFPC_RESERVED,     "RESERVED"     }, /* not in the mask below */
309 	{ OFPC_IP_REASM,     "IP_REASM"     },
310 	{ OFPC_QUEUE_STATS,  "QUEUE_STATS"  },
311 	{ OFPC_ARP_MATCH_IP, "ARP_MATCH_IP" },
312 	{ 0, NULL }
313 };
314 #define OFPCAP_U (~(OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
315                     OFPC_STP | OFPC_IP_REASM | OFPC_QUEUE_STATS | \
316                     OFPC_ARP_MATCH_IP))
317 
318 #define OFPC_FRAG_NORMAL 0x0000U
319 #define OFPC_FRAG_DROP   0x0001U
320 #define OFPC_FRAG_REASM  0x0002U
321 #define OFPC_FRAG_MASK   0x0003U
322 static const struct tok ofp_config_str[] = {
323 	{ OFPC_FRAG_NORMAL, "FRAG_NORMAL" },
324 	{ OFPC_FRAG_DROP,   "FRAG_DROP"   },
325 	{ OFPC_FRAG_REASM,  "FRAG_REASM"  },
326 	{ 0, NULL }
327 };
328 
329 #define OFPFC_ADD           0x0000U
330 #define OFPFC_MODIFY        0x0001U
331 #define OFPFC_MODIFY_STRICT 0x0002U
332 #define OFPFC_DELETE        0x0003U
333 #define OFPFC_DELETE_STRICT 0x0004U
334 static const struct tok ofpfc_str[] = {
335 	{ OFPFC_ADD,           "ADD"           },
336 	{ OFPFC_MODIFY,        "MODIFY"        },
337 	{ OFPFC_MODIFY_STRICT, "MODIFY_STRICT" },
338 	{ OFPFC_DELETE,        "DELETE"        },
339 	{ OFPFC_DELETE_STRICT, "DELETE_STRICT" },
340 	{ 0, NULL }
341 };
342 
343 static const struct tok bufferid_str[] = {
344 	{ 0xffffffff, "NONE" },
345 	{ 0, NULL }
346 };
347 
348 #define OFPFF_SEND_FLOW_REM (1U <<0)
349 #define OFPFF_CHECK_OVERLAP (1U <<1)
350 #define OFPFF_EMERG         (1U <<2)
351 static const struct tok ofpff_bm[] = {
352 	{ OFPFF_SEND_FLOW_REM, "SEND_FLOW_REM" },
353 	{ OFPFF_CHECK_OVERLAP, "CHECK_OVERLAP" },
354 	{ OFPFF_EMERG,         "EMERG"         },
355 	{ 0, NULL }
356 };
357 #define OFPFF_U (~(OFPFF_SEND_FLOW_REM | OFPFF_CHECK_OVERLAP | OFPFF_EMERG))
358 
359 #define OFPST_DESC      0x0000U
360 #define OFPST_FLOW      0x0001U
361 #define OFPST_AGGREGATE 0x0002U
362 #define OFPST_TABLE     0x0003U
363 #define OFPST_PORT      0x0004U
364 #define OFPST_QUEUE     0x0005U
365 #define OFPST_VENDOR    0xffffU
366 static const struct tok ofpst_str[] = {
367 	{ OFPST_DESC,      "DESC"      },
368 	{ OFPST_FLOW,      "FLOW"      },
369 	{ OFPST_AGGREGATE, "AGGREGATE" },
370 	{ OFPST_TABLE,     "TABLE"     },
371 	{ OFPST_PORT,      "PORT"      },
372 	{ OFPST_QUEUE,     "QUEUE"     },
373 	{ OFPST_VENDOR,    "VENDOR"    },
374 	{ 0, NULL }
375 };
376 
377 static const struct tok tableid_str[] = {
378 	{ 0xfeU, "EMERG" },
379 	{ 0xffU, "ALL"   },
380 	{ 0, NULL }
381 };
382 
383 #define OFPQ_ALL      0xffffffffU
384 static const struct tok ofpq_str[] = {
385 	{ OFPQ_ALL, "ALL" },
386 	{ 0, NULL }
387 };
388 
389 #define OFPSF_REPLY_MORE 0x0001U
390 static const struct tok ofpsf_reply_bm[] = {
391 	{ OFPSF_REPLY_MORE, "MORE" },
392 	{ 0, NULL }
393 };
394 #define OFPSF_REPLY_U (~(OFPSF_REPLY_MORE))
395 
396 #define OFPR_NO_MATCH 0x00U
397 #define OFPR_ACTION   0x01U
398 static const struct tok ofpr_str[] = {
399 	{ OFPR_NO_MATCH, "NO_MATCH" },
400 	{ OFPR_ACTION,   "ACTION"   },
401 	{ 0, NULL }
402 };
403 
404 #define OFPRR_IDLE_TIMEOUT 0x00U
405 #define OFPRR_HARD_TIMEOUT 0x01U
406 #define OFPRR_DELETE       0x02U
407 static const struct tok ofprr_str[] = {
408 	{ OFPRR_IDLE_TIMEOUT, "IDLE_TIMEOUT" },
409 	{ OFPRR_HARD_TIMEOUT, "HARD_TIMEOUT" },
410 	{ OFPRR_DELETE,       "DELETE"       },
411 	{ 0, NULL }
412 };
413 
414 #define OFPPR_ADD    0x00U
415 #define OFPPR_DELETE 0x01U
416 #define OFPPR_MODIFY 0x02U
417 static const struct tok ofppr_str[] = {
418 	{ OFPPR_ADD,    "ADD"    },
419 	{ OFPPR_DELETE, "DELETE" },
420 	{ OFPPR_MODIFY, "MODIFY" },
421 	{ 0, NULL }
422 };
423 
424 #define OFPET_HELLO_FAILED    0x0000U
425 #define OFPET_BAD_REQUEST     0x0001U
426 #define OFPET_BAD_ACTION      0x0002U
427 #define OFPET_FLOW_MOD_FAILED 0x0003U
428 #define OFPET_PORT_MOD_FAILED 0x0004U
429 #define OFPET_QUEUE_OP_FAILED 0x0005U
430 static const struct tok ofpet_str[] = {
431 	{ OFPET_HELLO_FAILED,    "HELLO_FAILED"    },
432 	{ OFPET_BAD_REQUEST,     "BAD_REQUEST"     },
433 	{ OFPET_BAD_ACTION,      "BAD_ACTION"      },
434 	{ OFPET_FLOW_MOD_FAILED, "FLOW_MOD_FAILED" },
435 	{ OFPET_PORT_MOD_FAILED, "PORT_MOD_FAILED" },
436 	{ OFPET_QUEUE_OP_FAILED, "QUEUE_OP_FAILED" },
437 	{ 0, NULL }
438 };
439 
440 #define OFPHFC_INCOMPATIBLE 0x0000U
441 #define OFPHFC_EPERM        0x0001U
442 static const struct tok ofphfc_str[] = {
443 	{ OFPHFC_INCOMPATIBLE, "INCOMPATIBLE" },
444 	{ OFPHFC_EPERM,        "EPERM"        },
445 	{ 0, NULL }
446 };
447 
448 #define OFPBRC_BAD_VERSION    0x0000U
449 #define OFPBRC_BAD_TYPE       0x0001U
450 #define OFPBRC_BAD_STAT       0x0002U
451 #define OFPBRC_BAD_VENDOR     0x0003U
452 #define OFPBRC_BAD_SUBTYPE    0x0004U
453 #define OFPBRC_EPERM          0x0005U
454 #define OFPBRC_BAD_LEN        0x0006U
455 #define OFPBRC_BUFFER_EMPTY   0x0007U
456 #define OFPBRC_BUFFER_UNKNOWN 0x0008U
457 static const struct tok ofpbrc_str[] = {
458 	{ OFPBRC_BAD_VERSION,    "BAD_VERSION"    },
459 	{ OFPBRC_BAD_TYPE,       "BAD_TYPE"       },
460 	{ OFPBRC_BAD_STAT,       "BAD_STAT"       },
461 	{ OFPBRC_BAD_VENDOR,     "BAD_VENDOR"     },
462 	{ OFPBRC_BAD_SUBTYPE,    "BAD_SUBTYPE"    },
463 	{ OFPBRC_EPERM,          "EPERM"          },
464 	{ OFPBRC_BAD_LEN,        "BAD_LEN"        },
465 	{ OFPBRC_BUFFER_EMPTY,   "BUFFER_EMPTY"   },
466 	{ OFPBRC_BUFFER_UNKNOWN, "BUFFER_UNKNOWN" },
467 	{ 0, NULL }
468 };
469 
470 #define OFPBAC_BAD_TYPE        0x0000U
471 #define OFPBAC_BAD_LEN         0x0001U
472 #define OFPBAC_BAD_VENDOR      0x0002U
473 #define OFPBAC_BAD_VENDOR_TYPE 0x0003U
474 #define OFPBAC_BAD_OUT_PORT    0x0004U
475 #define OFPBAC_BAD_ARGUMENT    0x0005U
476 #define OFPBAC_EPERM           0x0006U
477 #define OFPBAC_TOO_MANY        0x0007U
478 #define OFPBAC_BAD_QUEUE       0x0008U
479 static const struct tok ofpbac_str[] = {
480 	{ OFPBAC_BAD_TYPE,        "BAD_TYPE"        },
481 	{ OFPBAC_BAD_LEN,         "BAD_LEN"         },
482 	{ OFPBAC_BAD_VENDOR,      "BAD_VENDOR"      },
483 	{ OFPBAC_BAD_VENDOR_TYPE, "BAD_VENDOR_TYPE" },
484 	{ OFPBAC_BAD_OUT_PORT,    "BAD_OUT_PORT"    },
485 	{ OFPBAC_BAD_ARGUMENT,    "BAD_ARGUMENT"    },
486 	{ OFPBAC_EPERM,           "EPERM"           },
487 	{ OFPBAC_TOO_MANY,        "TOO_MANY"        },
488 	{ OFPBAC_BAD_QUEUE,       "BAD_QUEUE"       },
489 	{ 0, NULL }
490 };
491 
492 #define OFPFMFC_ALL_TABLES_FULL   0x0000U
493 #define OFPFMFC_OVERLAP           0x0001U
494 #define OFPFMFC_EPERM             0x0002U
495 #define OFPFMFC_BAD_EMERG_TIMEOUT 0x0003U
496 #define OFPFMFC_BAD_COMMAND       0x0004U
497 #define OFPFMFC_UNSUPPORTED       0x0005U
498 static const struct tok ofpfmfc_str[] = {
499 	{ OFPFMFC_ALL_TABLES_FULL,   "ALL_TABLES_FULL"   },
500 	{ OFPFMFC_OVERLAP,           "OVERLAP"           },
501 	{ OFPFMFC_EPERM,             "EPERM"             },
502 	{ OFPFMFC_BAD_EMERG_TIMEOUT, "BAD_EMERG_TIMEOUT" },
503 	{ OFPFMFC_BAD_COMMAND,       "BAD_COMMAND"       },
504 	{ OFPFMFC_UNSUPPORTED,       "UNSUPPORTED"       },
505 	{ 0, NULL }
506 };
507 
508 #define OFPPMFC_BAD_PORT    0x0000U
509 #define OFPPMFC_BAD_HW_ADDR 0x0001U
510 static const struct tok ofppmfc_str[] = {
511 	{ OFPPMFC_BAD_PORT,    "BAD_PORT"    },
512 	{ OFPPMFC_BAD_HW_ADDR, "BAD_HW_ADDR" },
513 	{ 0, NULL }
514 };
515 
516 #define OFPQOFC_BAD_PORT  0x0000U
517 #define OFPQOFC_BAD_QUEUE 0x0001U
518 #define OFPQOFC_EPERM     0x0002U
519 static const struct tok ofpqofc_str[] = {
520 	{ OFPQOFC_BAD_PORT,  "BAD_PORT"  },
521 	{ OFPQOFC_BAD_QUEUE, "BAD_QUEUE" },
522 	{ OFPQOFC_EPERM,     "EPERM"     },
523 	{ 0, NULL }
524 };
525 
526 static const struct uint_tokary of10_ofpet2tokary[] = {
527 	{ OFPET_HELLO_FAILED,    ofphfc_str  },
528 	{ OFPET_BAD_REQUEST,     ofpbrc_str  },
529 	{ OFPET_BAD_ACTION,      ofpbac_str  },
530 	{ OFPET_FLOW_MOD_FAILED, ofpfmfc_str },
531 	{ OFPET_PORT_MOD_FAILED, ofppmfc_str },
532 	{ OFPET_QUEUE_OP_FAILED, ofpqofc_str },
533 	/* uint2tokary() does not use array termination. */
534 };
535 
536 /* lengths (fixed or minimal) of particular message types, where not 0 */
537 #define OF_SWITCH_CONFIG_FIXLEN            (12U - OF_HEADER_FIXLEN)
538 #define OF_FEATURES_REPLY_MINLEN           (32U - OF_HEADER_FIXLEN)
539 #define OF_PORT_STATUS_FIXLEN              (64U - OF_HEADER_FIXLEN)
540 #define OF_PORT_MOD_FIXLEN                 (32U - OF_HEADER_FIXLEN)
541 #define OF_PACKET_IN_MINLEN                (20U - OF_HEADER_FIXLEN) /* with 2 mock octets */
542 #define OF_PACKET_OUT_MINLEN               (16U - OF_HEADER_FIXLEN)
543 #define OF_FLOW_MOD_MINLEN                 (72U - OF_HEADER_FIXLEN)
544 #define OF_FLOW_REMOVED_FIXLEN             (88U - OF_HEADER_FIXLEN)
545 #define OF_ERROR_MSG_MINLEN                (12U - OF_HEADER_FIXLEN)
546 #define OF_STATS_REQUEST_MINLEN            (12U - OF_HEADER_FIXLEN)
547 #define OF_STATS_REPLY_MINLEN              (12U - OF_HEADER_FIXLEN)
548 #define OF_VENDOR_MINLEN                   (12U - OF_HEADER_FIXLEN)
549 #define OF_QUEUE_GET_CONFIG_REQUEST_FIXLEN (12U - OF_HEADER_FIXLEN)
550 #define OF_QUEUE_GET_CONFIG_REPLY_MINLEN   (16U - OF_HEADER_FIXLEN)
551 
552 /* lengths (fixed or minimal) of particular protocol structures */
553 #define OF_PHY_PORT_FIXLEN                    48
554 #define OF_ACTION_MINLEN                       8
555 #define OF_MATCH_FIXLEN                       40
556 #define OF_DESC_STATS_REPLY_FIXLEN          1056
557 #define OF_FLOW_STATS_REQUEST_FIXLEN          44
558 #define OF_FLOW_STATS_REPLY_MINLEN            88
559 #define OF_AGGREGATE_STATS_REPLY_FIXLEN       24
560 #define OF_TABLE_STATS_REPLY_FIXLEN           64
561 #define OF_PORT_STATS_REQUEST_FIXLEN           8
562 #define OF_PORT_STATS_REPLY_FIXLEN           104
563 #define OF_QUEUE_PROP_MINLEN                   8
564 #define OF_QUEUE_PROP_MIN_RATE_FIXLEN         16
565 #define OF_PACKET_QUEUE_MINLEN                 8
566 #define OF_QUEUE_STATS_REQUEST_FIXLEN          8
567 #define OF_QUEUE_STATS_REPLY_FIXLEN           32
568 
569 /* miscellaneous constants from [OF10] */
570 #define OFP_MAX_TABLE_NAME_LEN     32
571 #define OFP_MAX_PORT_NAME_LEN      16
572 #define DESC_STR_LEN              256
573 #define SERIAL_NUM_LEN             32
574 #define OFP_VLAN_NONE          0xffffU
575 
576 /* vendor extensions */
577 #define BSN_SET_IP_MASK                    0
578 #define BSN_GET_IP_MASK_REQUEST            1
579 #define BSN_GET_IP_MASK_REPLY              2
580 #define BSN_SET_MIRRORING                  3
581 #define BSN_GET_MIRRORING_REQUEST          4
582 #define BSN_GET_MIRRORING_REPLY            5
583 #define BSN_SHELL_COMMAND                  6
584 #define BSN_SHELL_OUTPUT                   7
585 #define BSN_SHELL_STATUS                   8
586 #define BSN_GET_INTERFACES_REQUEST         9
587 #define BSN_GET_INTERFACES_REPLY          10
588 #define BSN_SET_PKTIN_SUPPRESSION_REQUEST 11
589 #define BSN_SET_L2_TABLE_REQUEST          12
590 #define BSN_GET_L2_TABLE_REQUEST          13
591 #define BSN_GET_L2_TABLE_REPLY            14
592 #define BSN_VIRTUAL_PORT_CREATE_REQUEST   15
593 #define BSN_VIRTUAL_PORT_CREATE_REPLY     16
594 #define BSN_VIRTUAL_PORT_REMOVE_REQUEST   17
595 #define BSN_BW_ENABLE_SET_REQUEST         18
596 #define BSN_BW_ENABLE_GET_REQUEST         19
597 #define BSN_BW_ENABLE_GET_REPLY           20
598 #define BSN_BW_CLEAR_DATA_REQUEST         21
599 #define BSN_BW_CLEAR_DATA_REPLY           22
600 #define BSN_BW_ENABLE_SET_REPLY           23
601 #define BSN_SET_L2_TABLE_REPLY            24
602 #define BSN_SET_PKTIN_SUPPRESSION_REPLY   25
603 #define BSN_VIRTUAL_PORT_REMOVE_REPLY     26
604 #define BSN_HYBRID_GET_REQUEST            27
605 #define BSN_HYBRID_GET_REPLY              28
606                                        /* 29 */
607                                        /* 30 */
608 #define BSN_PDU_TX_REQUEST                31
609 #define BSN_PDU_TX_REPLY                  32
610 #define BSN_PDU_RX_REQUEST                33
611 #define BSN_PDU_RX_REPLY                  34
612 #define BSN_PDU_RX_TIMEOUT                35
613 
614 static const struct tok bsn_subtype_str[] = {
615 	{ BSN_SET_IP_MASK,                   "SET_IP_MASK"                   },
616 	{ BSN_GET_IP_MASK_REQUEST,           "GET_IP_MASK_REQUEST"           },
617 	{ BSN_GET_IP_MASK_REPLY,             "GET_IP_MASK_REPLY"             },
618 	{ BSN_SET_MIRRORING,                 "SET_MIRRORING"                 },
619 	{ BSN_GET_MIRRORING_REQUEST,         "GET_MIRRORING_REQUEST"         },
620 	{ BSN_GET_MIRRORING_REPLY,           "GET_MIRRORING_REPLY"           },
621 	{ BSN_SHELL_COMMAND,                 "SHELL_COMMAND"                 },
622 	{ BSN_SHELL_OUTPUT,                  "SHELL_OUTPUT"                  },
623 	{ BSN_SHELL_STATUS,                  "SHELL_STATUS"                  },
624 	{ BSN_GET_INTERFACES_REQUEST,        "GET_INTERFACES_REQUEST"        },
625 	{ BSN_GET_INTERFACES_REPLY,          "GET_INTERFACES_REPLY"          },
626 	{ BSN_SET_PKTIN_SUPPRESSION_REQUEST, "SET_PKTIN_SUPPRESSION_REQUEST" },
627 	{ BSN_SET_L2_TABLE_REQUEST,          "SET_L2_TABLE_REQUEST"          },
628 	{ BSN_GET_L2_TABLE_REQUEST,          "GET_L2_TABLE_REQUEST"          },
629 	{ BSN_GET_L2_TABLE_REPLY,            "GET_L2_TABLE_REPLY"            },
630 	{ BSN_VIRTUAL_PORT_CREATE_REQUEST,   "VIRTUAL_PORT_CREATE_REQUEST"   },
631 	{ BSN_VIRTUAL_PORT_CREATE_REPLY,     "VIRTUAL_PORT_CREATE_REPLY"     },
632 	{ BSN_VIRTUAL_PORT_REMOVE_REQUEST,   "VIRTUAL_PORT_REMOVE_REQUEST"   },
633 	{ BSN_BW_ENABLE_SET_REQUEST,         "BW_ENABLE_SET_REQUEST"         },
634 	{ BSN_BW_ENABLE_GET_REQUEST,         "BW_ENABLE_GET_REQUEST"         },
635 	{ BSN_BW_ENABLE_GET_REPLY,           "BW_ENABLE_GET_REPLY"           },
636 	{ BSN_BW_CLEAR_DATA_REQUEST,         "BW_CLEAR_DATA_REQUEST"         },
637 	{ BSN_BW_CLEAR_DATA_REPLY,           "BW_CLEAR_DATA_REPLY"           },
638 	{ BSN_BW_ENABLE_SET_REPLY,           "BW_ENABLE_SET_REPLY"           },
639 	{ BSN_SET_L2_TABLE_REPLY,            "SET_L2_TABLE_REPLY"            },
640 	{ BSN_SET_PKTIN_SUPPRESSION_REPLY,   "SET_PKTIN_SUPPRESSION_REPLY"   },
641 	{ BSN_VIRTUAL_PORT_REMOVE_REPLY,     "VIRTUAL_PORT_REMOVE_REPLY"     },
642 	{ BSN_HYBRID_GET_REQUEST,            "HYBRID_GET_REQUEST"            },
643 	{ BSN_HYBRID_GET_REPLY,              "HYBRID_GET_REPLY"              },
644 	{ BSN_PDU_TX_REQUEST,                "PDU_TX_REQUEST"                },
645 	{ BSN_PDU_TX_REPLY,                  "PDU_TX_REPLY"                  },
646 	{ BSN_PDU_RX_REQUEST,                "PDU_RX_REQUEST"                },
647 	{ BSN_PDU_RX_REPLY,                  "PDU_RX_REPLY"                  },
648 	{ BSN_PDU_RX_TIMEOUT,                "PDU_RX_TIMEOUT"                },
649 	{ 0, NULL }
650 };
651 
652 #define BSN_ACTION_MIRROR                  1
653 #define BSN_ACTION_SET_TUNNEL_DST          2
654                                         /* 3 */
655 #define BSN_ACTION_CHECKSUM                4
656 
657 static const struct tok bsn_action_subtype_str[] = {
658 	{ BSN_ACTION_MIRROR,                 "MIRROR"                        },
659 	{ BSN_ACTION_SET_TUNNEL_DST,         "SET_TUNNEL_DST"                },
660 	{ BSN_ACTION_CHECKSUM,               "CHECKSUM"                      },
661 	{ 0, NULL }
662 };
663 
664 static const struct tok bsn_mirror_copy_stage_str[] = {
665 	{ 0, "INGRESS" },
666 	{ 1, "EGRESS"  },
667 	{ 0, NULL },
668 };
669 
670 static const struct tok bsn_onoff_str[] = {
671 	{ 0, "OFF" },
672 	{ 1, "ON"  },
673 	{ 0, NULL },
674 };
675 
676 static const char *
677 vlan_str(const uint16_t vid)
678 {
679 	static char buf[sizeof("65535 (bogus)")];
680 
681 	if (vid == OFP_VLAN_NONE)
682 		return "NONE";
683 	snprintf(buf, sizeof(buf), "%u%s", vid,
684 	         (vid > 0 && vid < 0x0fff) ? "" : " (bogus)");
685 	return buf;
686 }
687 
688 static const char *
689 pcp_str(const uint8_t pcp)
690 {
691 	static char buf[sizeof("255 (bogus)")];
692 	snprintf(buf, sizeof(buf), "%u%s", pcp,
693 	         pcp <= 7 ? "" : " (bogus)");
694 	return buf;
695 }
696 
697 static void
698 of10_bsn_message_print(netdissect_options *ndo,
699                        const u_char *cp, u_int len)
700 {
701 	uint32_t subtype;
702 
703 	if (len < 4)
704 		goto invalid;
705 	/* subtype */
706 	subtype = GET_BE_U_4(cp);
707 	OF_FWD(4);
708 	ND_PRINT("\n\t subtype %s", tok2str(bsn_subtype_str, "unknown (0x%08x)", subtype));
709 	switch (subtype) {
710 	case BSN_GET_IP_MASK_REQUEST:
711 		/*
712 		 *  0                   1                   2                   3
713 		 *  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
714 		 * +---------------+---------------+---------------+---------------+
715 		 * |                            subtype                            |
716 		 * +---------------+---------------+---------------+---------------+
717 		 * |     index     |                      pad                      |
718 		 * +---------------+---------------+---------------+---------------+
719 		 * |                              pad                              |
720 		 * +---------------+---------------+---------------+---------------+
721 		 *
722 		 */
723 		if (len != 8)
724 			goto invalid;
725 		/* index */
726 		ND_PRINT(", index %u", GET_U_1(cp));
727 		OF_FWD(1);
728 		/* pad */
729 		/* Always the last field, check bounds. */
730 		ND_TCHECK_7(cp);
731 		break;
732 	case BSN_SET_IP_MASK:
733 	case BSN_GET_IP_MASK_REPLY:
734 		/*
735 		 *  0                   1                   2                   3
736 		 *  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
737 		 * +---------------+---------------+---------------+---------------+
738 		 * |                            subtype                            |
739 		 * +---------------+---------------+---------------+---------------+
740 		 * |     index     |                      pad                      |
741 		 * +---------------+---------------+---------------+---------------+
742 		 * |                              mask                             |
743 		 * +---------------+---------------+---------------+---------------+
744 		 *
745 		 */
746 		if (len != 8)
747 			goto invalid;
748 		/* index */
749 		ND_PRINT(", index %u", GET_U_1(cp));
750 		OF_FWD(1);
751 		/* pad */
752 		OF_FWD(3);
753 		/* mask */
754 		ND_PRINT(", mask %s", GET_IPADDR_STRING(cp));
755 		break;
756 	case BSN_SET_MIRRORING:
757 	case BSN_GET_MIRRORING_REQUEST:
758 	case BSN_GET_MIRRORING_REPLY:
759 		/*
760 		 *  0                   1                   2                   3
761 		 *  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
762 		 * +---------------+---------------+---------------+---------------+
763 		 * |                            subtype                            |
764 		 * +---------------+---------------+---------------+---------------+
765 		 * | report m. p.  |                      pad                      |
766 		 * +---------------+---------------+---------------+---------------+
767 		 *
768 		 */
769 		if (len != 4)
770 			goto invalid;
771 		/* report_mirror_ports */
772 		ND_PRINT(", report_mirror_ports %s",
773 			 tok2str(bsn_onoff_str, "bogus (%u)", GET_U_1(cp)));
774 		OF_FWD(1);
775 		/* pad */
776 		/* Always the last field, check bounds. */
777 		ND_TCHECK_3(cp);
778 		break;
779 	case BSN_GET_INTERFACES_REQUEST:
780 	case BSN_GET_L2_TABLE_REQUEST:
781 	case BSN_BW_ENABLE_GET_REQUEST:
782 	case BSN_BW_CLEAR_DATA_REQUEST:
783 	case BSN_HYBRID_GET_REQUEST:
784 		/*
785 		 *  0                   1                   2                   3
786 		 *  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
787 		 * +---------------+---------------+---------------+---------------+
788 		 * |                            subtype                            |
789 		 * +---------------+---------------+---------------+---------------+
790 		 *
791 		 */
792 		if (len)
793 			goto invalid;
794 		break;
795 	case BSN_VIRTUAL_PORT_REMOVE_REQUEST:
796 		/*
797 		 *  0                   1                   2                   3
798 		 *  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
799 		 * +---------------+---------------+---------------+---------------+
800 		 * |                            subtype                            |
801 		 * +---------------+---------------+---------------+---------------+
802 		 * |                           vport_no                            |
803 		 * +---------------+---------------+---------------+---------------+
804 		 *
805 		 */
806 		if (len != 4)
807 			goto invalid;
808 		/* vport_no */
809 		ND_PRINT(", vport_no %u", GET_BE_U_4(cp));
810 		break;
811 	case BSN_SHELL_COMMAND:
812 		/*
813 		 *  0                   1                   2                   3
814 		 *  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
815 		 * +---------------+---------------+---------------+---------------+
816 		 * |                            subtype                            |
817 		 * +---------------+---------------+---------------+---------------+
818 		 * |                            service                            |
819 		 * +---------------+---------------+---------------+---------------+
820 		 * |                             data ...
821 		 * +---------------+---------------+--------
822 		 *
823 		 */
824 		if (len < 4)
825 			goto invalid;
826 		/* service */
827 		ND_PRINT(", service %u", GET_BE_U_4(cp));
828 		OF_FWD(4);
829 		/* data */
830 		ND_PRINT(", data '");
831 		(void)nd_printn(ndo, cp, len, NULL);
832 		ND_PRINT("'");
833 		break;
834 	case BSN_SHELL_OUTPUT:
835 		/*
836 		 *  0                   1                   2                   3
837 		 *  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
838 		 * +---------------+---------------+---------------+---------------+
839 		 * |                            subtype                            |
840 		 * +---------------+---------------+---------------+---------------+
841 		 * |                             data ...
842 		 * +---------------+---------------+--------
843 		 *
844 		 */
845 		/* already checked that len >= 4 */
846 		/* data */
847 		ND_PRINT(", data '");
848 		(void)nd_printn(ndo, cp, len, NULL);
849 		ND_PRINT("'");
850 		break;
851 	case BSN_SHELL_STATUS:
852 		/*
853 		 *  0                   1                   2                   3
854 		 *  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
855 		 * +---------------+---------------+---------------+---------------+
856 		 * |                            subtype                            |
857 		 * +---------------+---------------+---------------+---------------+
858 		 * |                            status                             |
859 		 * +---------------+---------------+---------------+---------------+
860 		 *
861 		 */
862 		if (len != 4)
863 			goto invalid;
864 		/* status */
865 		ND_PRINT(", status 0x%08x", GET_BE_U_4(cp));
866 		break;
867 	default:
868 		ND_TCHECK_LEN(cp, len);
869 	}
870 	return;
871 
872 invalid: /* skip the undersized data */
873 	nd_print_invalid(ndo);
874 	ND_TCHECK_LEN(cp, len);
875 }
876 
877 static void
878 of10_bsn_actions_print(netdissect_options *ndo,
879                        const u_char *cp, u_int len)
880 {
881 	uint32_t subtype, vlan_tag;
882 
883 	if (len < 4)
884 		goto invalid;
885 	/* subtype */
886 	subtype = GET_BE_U_4(cp);
887 	OF_FWD(4);
888 	ND_PRINT("\n\t  subtype %s", tok2str(bsn_action_subtype_str, "unknown (0x%08x)", subtype));
889 	switch (subtype) {
890 	case BSN_ACTION_MIRROR:
891 		/*
892 		 *  0                   1                   2                   3
893 		 *  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
894 		 * +---------------+---------------+---------------+---------------+
895 		 * |                            subtype                            |
896 		 * +---------------+---------------+---------------+---------------+
897 		 * |                           dest_port                           |
898 		 * +---------------+---------------+---------------+---------------+
899 		 * |                           vlan_tag                            |
900 		 * +---------------+---------------+---------------+---------------+
901 		 * |  copy_stage   |                      pad                      |
902 		 * +---------------+---------------+---------------+---------------+
903 		 *
904 		 */
905 		if (len != 12)
906 			goto invalid;
907 		/* dest_port */
908 		ND_PRINT(", dest_port %u", GET_BE_U_4(cp));
909 		OF_FWD(4);
910 		/* vlan_tag */
911 		vlan_tag = GET_BE_U_4(cp);
912 		OF_FWD(4);
913 		switch (vlan_tag >> 16) {
914 		case 0:
915 			ND_PRINT(", vlan_tag none");
916 			break;
917 		case ETHERTYPE_8021Q:
918 			ND_PRINT(", vlan_tag 802.1Q (%s)", ieee8021q_tci_string(vlan_tag & 0xffff));
919 			break;
920 		default:
921 			ND_PRINT(", vlan_tag unknown (0x%04x)", vlan_tag >> 16);
922 		}
923 		/* copy_stage */
924 		ND_PRINT(", copy_stage %s",
925 			 tok2str(bsn_mirror_copy_stage_str, "unknown (%u)", GET_U_1(cp)));
926 		OF_FWD(1);
927 		/* pad */
928 		/* Always the last field, check bounds. */
929 		ND_TCHECK_3(cp);
930 		break;
931 	default:
932 		ND_TCHECK_LEN(cp, len);
933 	}
934 	return;
935 
936 invalid:
937 	nd_print_invalid(ndo);
938 	ND_TCHECK_LEN(cp, len);
939 }
940 
941 static void
942 of10_vendor_action_print(netdissect_options *ndo,
943                          const u_char *cp, u_int len)
944 {
945 	uint32_t vendor;
946 	void (*decoder)(netdissect_options *, const u_char *, u_int);
947 
948 	if (len < 4)
949 		goto invalid;
950 	/* vendor */
951 	vendor = GET_BE_U_4(cp);
952 	OF_FWD(4);
953 	ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
954 	/* data */
955 	decoder =
956 		vendor == OUI_BSN         ? of10_bsn_actions_print         :
957 		of_data_print;
958 	decoder(ndo, cp, len);
959 	return;
960 
961 invalid: /* skip the undersized data */
962 	nd_print_invalid(ndo);
963 	ND_TCHECK_LEN(cp, len);
964 }
965 
966 /* [OF10] Section 5.5.4 */
967 static void
968 of10_vendor_message_print(netdissect_options *ndo,
969                           const u_char *cp, u_int len)
970 {
971 	uint32_t vendor;
972 	void (*decoder)(netdissect_options *, const u_char *, u_int);
973 
974 	/* vendor */
975 	vendor = GET_BE_U_4(cp);
976 	OF_FWD(4);
977 	ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
978 	/* data */
979 	decoder =
980 		vendor == OUI_BSN         ? of10_bsn_message_print         :
981 		of_data_print;
982 	decoder(ndo, cp, len);
983 }
984 
985 /* Vendor ID is mandatory, data is optional. */
986 static void
987 of10_vendor_data_print(netdissect_options *ndo,
988                        const u_char *cp, u_int len)
989 {
990 	uint32_t vendor;
991 
992 	if (len < 4)
993 		goto invalid;
994 	/* vendor */
995 	vendor = GET_BE_U_4(cp);
996 	OF_FWD(4);
997 	ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
998 	/* data */
999 	of_data_print(ndo, cp, len);
1000 	return;
1001 
1002 invalid: /* skip the undersized data */
1003 	nd_print_invalid(ndo);
1004 	ND_TCHECK_LEN(cp, len);
1005 }
1006 
1007 static void
1008 of10_packet_data_print(netdissect_options *ndo,
1009                        const u_char *cp, const u_int len)
1010 {
1011 	if (len == 0)
1012 		return;
1013 	/* data */
1014 	ND_PRINT("\n\t data (%u octets)", len);
1015 	if (ndo->ndo_vflag < 3) {
1016 		ND_TCHECK_LEN(cp, len);
1017 		return;
1018 	}
1019 	ndo->ndo_vflag -= 3;
1020 	ND_PRINT(", frame decoding below\n");
1021 	/*
1022 	 * The encapsulated Ethernet frame is not necessarily the last
1023 	 * data of this packet (i.e. there may be more OpenFlow messages
1024 	 * after the current OFPT_PACKET_IN/OFPT_PACKET_OUT message, in
1025 	 * which case the current (outer) packet's snapshot end is not
1026 	 * what ether_print() needs to decode an Ethernet frame nested in
1027 	 * the middle of a TCP payload.
1028 	 */
1029 	const u_char *snapend_save = ndo->ndo_snapend;
1030 	ndo->ndo_snapend = ND_MIN(cp + len, ndo->ndo_snapend);
1031 	ether_print(ndo, cp, len, ND_BYTES_AVAILABLE_AFTER(cp), NULL, NULL);
1032 	ndo->ndo_snapend = snapend_save;
1033 	ndo->ndo_vflag += 3;
1034 }
1035 
1036 /* [OF10] Section 5.2.1 */
1037 static void
1038 of10_phy_port_print(netdissect_options *ndo,
1039                     const u_char *cp)
1040 {
1041 	uint32_t state;
1042 
1043 	/* port_no */
1044 	ND_PRINT("\n\t  port_no %s",
1045 		 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1046 	cp += 2;
1047 	/* hw_addr */
1048 	ND_PRINT(", hw_addr %s", GET_ETHERADDR_STRING(cp));
1049 	cp += MAC_ADDR_LEN;
1050 	/* name */
1051 	ND_PRINT(", name '");
1052 	nd_printjnp(ndo, cp, OFP_MAX_PORT_NAME_LEN);
1053 	ND_PRINT("'");
1054 	cp += OFP_MAX_PORT_NAME_LEN;
1055 
1056 	if (ndo->ndo_vflag < 2) {
1057 		ND_TCHECK_LEN(cp, 24);
1058 		return;
1059 	}
1060 	/* config */
1061 	ND_PRINT("\n\t   config 0x%08x", GET_BE_U_4(cp));
1062 	of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
1063 	cp += 4;
1064 	/* state */
1065 	state = GET_BE_U_4(cp);
1066 	/*
1067 	 * Decode the code point and the single bit separately, but
1068 	 * format the result as a single sequence of comma-separated
1069 	 * strings (see the comments at the OFPPS_ props).
1070 	 */
1071 	ND_PRINT("\n\t   state 0x%08x (%s%s)%s", state,
1072 	         tok2str(ofpps_stp_str, "", state & OFPPS_STP_MASK),
1073 	         state & OFPPS_LINK_DOWN ? ", LINK_DOWN" : "",
1074 	         state & OFPPS_U ? " (bogus)" : "");
1075 	cp += 4;
1076 	/* curr */
1077 	ND_PRINT("\n\t   curr 0x%08x", GET_BE_U_4(cp));
1078 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1079 	cp += 4;
1080 	/* advertised */
1081 	ND_PRINT("\n\t   advertised 0x%08x", GET_BE_U_4(cp));
1082 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1083 	cp += 4;
1084 	/* supported */
1085 	ND_PRINT("\n\t   supported 0x%08x", GET_BE_U_4(cp));
1086 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1087 	cp += 4;
1088 	/* peer */
1089 	ND_PRINT("\n\t   peer 0x%08x", GET_BE_U_4(cp));
1090 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1091 }
1092 
1093 /* [OF10] Section 5.2.2 */
1094 static void
1095 of10_queue_props_print(netdissect_options *ndo,
1096                        const u_char *cp, u_int len)
1097 {
1098 	while (len) {
1099 		uint16_t property, plen;
1100 		u_char plen_bogus = 0, skip = 0;
1101 
1102 		if (len < OF_QUEUE_PROP_MINLEN)
1103 			goto invalid;
1104 		/* property */
1105 		property = GET_BE_U_2(cp);
1106 		OF_FWD(2);
1107 		ND_PRINT("\n\t   property %s", tok2str(ofpqt_str, "invalid (0x%04x)", property));
1108 		/* len */
1109 		plen = GET_BE_U_2(cp);
1110 		OF_FWD(2);
1111 		ND_PRINT(", len %u", plen);
1112 		if (plen < OF_QUEUE_PROP_MINLEN || plen > len + 4)
1113 			goto invalid;
1114 		/* pad */
1115 		/* Sometimes the last field, check bounds. */
1116 		OF_CHK_FWD(4);
1117 		/* property-specific constraints and decoding */
1118 		switch (property) {
1119 		case OFPQT_NONE:
1120 			plen_bogus = plen != OF_QUEUE_PROP_MINLEN;
1121 			break;
1122 		case OFPQT_MIN_RATE:
1123 			plen_bogus = plen != OF_QUEUE_PROP_MIN_RATE_FIXLEN;
1124 			break;
1125 		default:
1126 			skip = 1;
1127 		}
1128 		if (plen_bogus) {
1129 			ND_PRINT(" (bogus)");
1130 			skip = 1;
1131 		}
1132 		if (skip) {
1133 			/*
1134 			 * plen >= OF_QUEUE_PROP_MINLEN
1135 			 * cp is OF_QUEUE_PROP_MINLEN bytes in
1136 			 */
1137 			OF_CHK_FWD(plen - OF_QUEUE_PROP_MINLEN);
1138 			continue;
1139 		}
1140 		if (property == OFPQT_MIN_RATE) { /* the only case of property decoding */
1141 			/* rate */
1142 			uint16_t rate = GET_BE_U_2(cp);
1143 			OF_FWD(2);
1144 			if (rate > 1000)
1145 				ND_PRINT(", rate disabled");
1146 			else
1147 				ND_PRINT(", rate %u.%u%%", rate / 10, rate % 10);
1148 			/* pad */
1149 			/* Sometimes the last field, check bounds. */
1150 			OF_CHK_FWD(6);
1151 		}
1152 	} /* while */
1153 	return;
1154 
1155 invalid: /* skip the rest of queue properties */
1156 	nd_print_invalid(ndo);
1157 	ND_TCHECK_LEN(cp, len);
1158 }
1159 
1160 /* ibid */
1161 static void
1162 of10_queues_print(netdissect_options *ndo,
1163                   const u_char *cp, u_int len)
1164 {
1165 	while (len) {
1166 		uint16_t desclen;
1167 
1168 		if (len < OF_PACKET_QUEUE_MINLEN)
1169 			goto invalid;
1170 		/* queue_id */
1171 		ND_PRINT("\n\t  queue_id %u", GET_BE_U_4(cp));
1172 		OF_FWD(4);
1173 		/* len */
1174 		desclen = GET_BE_U_2(cp);
1175 		OF_FWD(2);
1176 		ND_PRINT(", len %u", desclen);
1177 		if (desclen < OF_PACKET_QUEUE_MINLEN || desclen > len + 6)
1178 			goto invalid;
1179 		/* pad */
1180 		/* Sometimes the last field, check bounds. */
1181 		OF_CHK_FWD(2);
1182 		/* properties */
1183 		if (ndo->ndo_vflag >= 2)
1184 			of10_queue_props_print(ndo, cp, desclen - OF_PACKET_QUEUE_MINLEN);
1185 		else
1186 			ND_TCHECK_LEN(cp, desclen - OF_PACKET_QUEUE_MINLEN);
1187 		OF_FWD(desclen - OF_PACKET_QUEUE_MINLEN);
1188 	} /* while */
1189 	return;
1190 
1191 invalid: /* skip the rest of queues */
1192 	nd_print_invalid(ndo);
1193 	ND_TCHECK_LEN(cp, len);
1194 }
1195 
1196 /* [OF10] Section 5.2.3 */
1197 static void
1198 of10_match_print(netdissect_options *ndo,
1199                  const char *pfx, const u_char *cp)
1200 {
1201 	uint32_t wildcards;
1202 	uint16_t dl_type;
1203 	uint8_t nw_proto;
1204 	u_int nw_bits;
1205 	const char *field_name;
1206 
1207 	/* wildcards */
1208 	wildcards = GET_BE_U_4(cp);
1209 	if (wildcards & OFPFW_U)
1210 		ND_PRINT("%swildcards 0x%08x (bogus)", pfx, wildcards);
1211 	cp += 4;
1212 	/* in_port */
1213 	if (! (wildcards & OFPFW_IN_PORT))
1214 		ND_PRINT("%smatch in_port %s", pfx,
1215 		         tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1216 	cp += 2;
1217 	/* dl_src */
1218 	if (! (wildcards & OFPFW_DL_SRC))
1219 		ND_PRINT("%smatch dl_src %s", pfx, GET_ETHERADDR_STRING(cp));
1220 	cp += MAC_ADDR_LEN;
1221 	/* dl_dst */
1222 	if (! (wildcards & OFPFW_DL_DST))
1223 		ND_PRINT("%smatch dl_dst %s", pfx, GET_ETHERADDR_STRING(cp));
1224 	cp += MAC_ADDR_LEN;
1225 	/* dl_vlan */
1226 	if (! (wildcards & OFPFW_DL_VLAN))
1227 		ND_PRINT("%smatch dl_vlan %s", pfx, vlan_str(GET_BE_U_2(cp)));
1228 	cp += 2;
1229 	/* dl_vlan_pcp */
1230 	if (! (wildcards & OFPFW_DL_VLAN_PCP))
1231 		ND_PRINT("%smatch dl_vlan_pcp %s", pfx, pcp_str(GET_U_1(cp)));
1232 	cp += 1;
1233 	/* pad1 */
1234 	cp += 1;
1235 	/* dl_type */
1236 	dl_type = GET_BE_U_2(cp);
1237 	cp += 2;
1238 	if (! (wildcards & OFPFW_DL_TYPE))
1239 		ND_PRINT("%smatch dl_type 0x%04x", pfx, dl_type);
1240 	/* nw_tos */
1241 	if (! (wildcards & OFPFW_NW_TOS))
1242 		ND_PRINT("%smatch nw_tos 0x%02x", pfx, GET_U_1(cp));
1243 	cp += 1;
1244 	/* nw_proto */
1245 	nw_proto = GET_U_1(cp);
1246 	cp += 1;
1247 	if (! (wildcards & OFPFW_NW_PROTO)) {
1248 		field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_ARP
1249 		  ? "arp_opcode" : "nw_proto";
1250 		ND_PRINT("%smatch %s %u", pfx, field_name, nw_proto);
1251 	}
1252 	/* pad2 */
1253 	cp += 2;
1254 	/* nw_src */
1255 	nw_bits = (wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT;
1256 	if (nw_bits < 32)
1257 		ND_PRINT("%smatch nw_src %s/%u", pfx, GET_IPADDR_STRING(cp), 32 - nw_bits);
1258 	cp += 4;
1259 	/* nw_dst */
1260 	nw_bits = (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT;
1261 	if (nw_bits < 32)
1262 		ND_PRINT("%smatch nw_dst %s/%u", pfx, GET_IPADDR_STRING(cp), 32 - nw_bits);
1263 	cp += 4;
1264 	/* tp_src */
1265 	if (! (wildcards & OFPFW_TP_SRC)) {
1266 		field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
1267 		  && ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
1268 		  ? "icmp_type" : "tp_src";
1269 		ND_PRINT("%smatch %s %u", pfx, field_name, GET_BE_U_2(cp));
1270 	}
1271 	cp += 2;
1272 	/* tp_dst */
1273 	/* The last unconditional check was at nw_proto, so have an "else" here. */
1274 	if (! (wildcards & OFPFW_TP_DST)) {
1275 		field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
1276 		  && ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
1277 		  ? "icmp_code" : "tp_dst";
1278 		ND_PRINT("%smatch %s %u", pfx, field_name, GET_BE_U_2(cp));
1279 	}
1280 	else
1281 		ND_TCHECK_2(cp);
1282 }
1283 
1284 /* [OF10] Section 5.2.4 */
1285 static void
1286 of10_actions_print(netdissect_options *ndo,
1287                    const char *pfx, const u_char *cp, u_int len)
1288 {
1289 	while (len) {
1290 		uint16_t type, alen, output_port;
1291 		u_char alen_bogus = 0, skip = 0;
1292 
1293 		if (len < OF_ACTION_MINLEN)
1294 			goto invalid;
1295 		/* type */
1296 		type = GET_BE_U_2(cp);
1297 		OF_FWD(2);
1298 		ND_PRINT("%saction type %s", pfx, tok2str(ofpat_str, "invalid (0x%04x)", type));
1299 		/* length */
1300 		alen = GET_BE_U_2(cp);
1301 		OF_FWD(2);
1302 		ND_PRINT(", len %u", alen);
1303 		/*
1304 		 * The 4-byte "pad" in the specification is not a field of the
1305 		 * action header, but a placeholder to illustrate the 64-bit
1306 		 * alignment requirement. Action type specific case blocks
1307 		 * below fetch these 4 bytes.
1308 		 */
1309 
1310 		/* On action size underrun/overrun skip the rest of the action list. */
1311 		if (alen < OF_ACTION_MINLEN || alen > len + 4)
1312 			goto invalid;
1313 		/*
1314 		 * After validating the basic length constraint it will be safe
1315 		 * to skip the current action if the action size is not valid
1316 		 * for the type or the type is invalid.
1317 		 */
1318 		switch (type) {
1319 		case OFPAT_OUTPUT:
1320 		case OFPAT_SET_VLAN_VID:
1321 		case OFPAT_SET_VLAN_PCP:
1322 		case OFPAT_STRIP_VLAN:
1323 		case OFPAT_SET_NW_SRC:
1324 		case OFPAT_SET_NW_DST:
1325 		case OFPAT_SET_NW_TOS:
1326 		case OFPAT_SET_TP_SRC:
1327 		case OFPAT_SET_TP_DST:
1328 			alen_bogus = alen != 8;
1329 			break;
1330 		case OFPAT_SET_DL_SRC:
1331 		case OFPAT_SET_DL_DST:
1332 		case OFPAT_ENQUEUE:
1333 			alen_bogus = alen != 16;
1334 			break;
1335 		case OFPAT_VENDOR:
1336 			alen_bogus = alen % 8 != 0; /* already >= 8 so far */
1337 			break;
1338 		default:
1339 			skip = 1;
1340 		}
1341 		if (alen_bogus) {
1342 			ND_PRINT(" (bogus)");
1343 			skip = 1;
1344 		}
1345 		if (skip) {
1346 			/*
1347 			 * alen >= OF_ACTION_MINLEN
1348 			 * cp is 4 bytes in
1349 			 */
1350 			OF_CHK_FWD(alen - 4);
1351 			continue;
1352 		}
1353 		/* OK to decode the rest of the action structure */
1354 		switch (type) {
1355 		case OFPAT_OUTPUT:
1356 			/* port */
1357 			output_port = GET_BE_U_2(cp);
1358 			OF_FWD(2);
1359 			ND_PRINT(", port %s", tok2str(ofpp_str, "%u", output_port));
1360 			/* max_len */
1361 			if (output_port == OFPP_CONTROLLER)
1362 				ND_PRINT(", max_len %u", GET_BE_U_2(cp));
1363 			else
1364 				ND_TCHECK_2(cp);
1365 			OF_FWD(2);
1366 			break;
1367 		case OFPAT_SET_VLAN_VID:
1368 			/* vlan_vid */
1369 			ND_PRINT(", vlan_vid %s", vlan_str(GET_BE_U_2(cp)));
1370 			OF_FWD(2);
1371 			/* pad */
1372 			/* Sometimes the last field, check bounds. */
1373 			OF_CHK_FWD(2);
1374 			break;
1375 		case OFPAT_SET_VLAN_PCP:
1376 			/* vlan_pcp */
1377 			ND_PRINT(", vlan_pcp %s", pcp_str(GET_U_1(cp)));
1378 			OF_FWD(1);
1379 			/* pad */
1380 			/* Sometimes the last field, check bounds. */
1381 			OF_CHK_FWD(3);
1382 			break;
1383 		case OFPAT_SET_DL_SRC:
1384 		case OFPAT_SET_DL_DST:
1385 			/* dl_addr */
1386 			ND_PRINT(", dl_addr %s", GET_ETHERADDR_STRING(cp));
1387 			OF_FWD(MAC_ADDR_LEN);
1388 			/* pad */
1389 			/* Sometimes the last field, check bounds. */
1390 			OF_CHK_FWD(6);
1391 			break;
1392 		case OFPAT_SET_NW_SRC:
1393 		case OFPAT_SET_NW_DST:
1394 			/* nw_addr */
1395 			ND_PRINT(", nw_addr %s", GET_IPADDR_STRING(cp));
1396 			OF_FWD(4);
1397 			break;
1398 		case OFPAT_SET_NW_TOS:
1399 			/* nw_tos */
1400 			ND_PRINT(", nw_tos 0x%02x", GET_U_1(cp));
1401 			OF_FWD(1);
1402 			/* pad */
1403 			/* Sometimes the last field, check bounds. */
1404 			OF_CHK_FWD(3);
1405 			break;
1406 		case OFPAT_SET_TP_SRC:
1407 		case OFPAT_SET_TP_DST:
1408 			/* nw_tos */
1409 			ND_PRINT(", tp_port %u", GET_BE_U_2(cp));
1410 			OF_FWD(2);
1411 			/* pad */
1412 			/* Sometimes the last field, check bounds. */
1413 			OF_CHK_FWD(2);
1414 			break;
1415 		case OFPAT_ENQUEUE:
1416 			/* port */
1417 			ND_PRINT(", port %s",
1418 				 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1419 			OF_FWD(2);
1420 			/* pad */
1421 			OF_FWD(6);
1422 			/* queue_id */
1423 			ND_PRINT(", queue_id %s",
1424 				 tok2str(ofpq_str, "%u", GET_BE_U_4(cp)));
1425 			OF_FWD(4);
1426 			break;
1427 		case OFPAT_VENDOR:
1428 			of10_vendor_action_print(ndo, cp, alen - 4);
1429 			OF_FWD(alen - 4);
1430 			break;
1431 		case OFPAT_STRIP_VLAN:
1432 			/* pad */
1433 			/* Sometimes the last field, check bounds. */
1434 			OF_CHK_FWD(4);
1435 			break;
1436 		} /* switch */
1437 	} /* while */
1438 	return;
1439 
1440 invalid: /* skip the rest of actions */
1441 	nd_print_invalid(ndo);
1442 	ND_TCHECK_LEN(cp, len);
1443 }
1444 
1445 /* [OF10] Section 5.3.1 */
1446 static void
1447 of10_features_reply_print(netdissect_options *ndo,
1448                           const u_char *cp, u_int len)
1449 {
1450 	/* datapath_id */
1451 	ND_PRINT("\n\t dpid 0x%016" PRIx64, GET_BE_U_8(cp));
1452 	OF_FWD(8);
1453 	/* n_buffers */
1454 	ND_PRINT(", n_buffers %u", GET_BE_U_4(cp));
1455 	OF_FWD(4);
1456 	/* n_tables */
1457 	ND_PRINT(", n_tables %u", GET_U_1(cp));
1458 	OF_FWD(1);
1459 	/* pad */
1460 	OF_FWD(3);
1461 	/* capabilities */
1462 	ND_PRINT("\n\t capabilities 0x%08x", GET_BE_U_4(cp));
1463 	of_bitmap_print(ndo, ofp_capabilities_bm, GET_BE_U_4(cp), OFPCAP_U);
1464 	OF_FWD(4);
1465 	/* actions */
1466 	ND_PRINT("\n\t actions 0x%08x", GET_BE_U_4(cp));
1467 	of_bitmap_print(ndo, ofpat_bm, GET_BE_U_4(cp), OFPAT_U);
1468 	OF_FWD(4);
1469 	/* ports */
1470 	while (len) {
1471 		if (len < OF_PHY_PORT_FIXLEN)
1472 			goto invalid;
1473 		of10_phy_port_print(ndo, cp);
1474 		OF_FWD(OF_PHY_PORT_FIXLEN);
1475 	}
1476 	return;
1477 
1478 invalid: /* skip the undersized trailing data */
1479 	nd_print_invalid(ndo);
1480 	ND_TCHECK_LEN(cp, len);
1481 }
1482 
1483 /* [OF10] Section 5.3.2 */
1484 static void
1485 of10_switch_config_msg_print(netdissect_options *ndo,
1486                              const u_char *cp, u_int len _U_)
1487 {
1488 	/* flags */
1489 	ND_PRINT("\n\t flags %s",
1490 	         tok2str(ofp_config_str, "invalid (0x%04x)", GET_BE_U_2(cp)));
1491 	cp += 2;
1492 	/* miss_send_len */
1493 	ND_PRINT(", miss_send_len %u", GET_BE_U_2(cp));
1494 }
1495 
1496 /* [OF10] Section 5.3.3 */
1497 static void
1498 of10_flow_mod_print(netdissect_options *ndo,
1499                     const u_char *cp, u_int len)
1500 {
1501 	uint16_t command;
1502 
1503 	/* match */
1504 	of10_match_print(ndo, "\n\t ", cp);
1505 	OF_FWD(OF_MATCH_FIXLEN);
1506 	/* cookie */
1507 	ND_PRINT("\n\t cookie 0x%016" PRIx64, GET_BE_U_8(cp));
1508 	OF_FWD(8);
1509 	/* command */
1510 	command = GET_BE_U_2(cp);
1511 	ND_PRINT(", command %s", tok2str(ofpfc_str, "invalid (0x%04x)", command));
1512 	OF_FWD(2);
1513 	/* idle_timeout */
1514 	if (GET_BE_U_2(cp))
1515 		ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
1516 	OF_FWD(2);
1517 	/* hard_timeout */
1518 	if (GET_BE_U_2(cp))
1519 		ND_PRINT(", hard_timeout %u", GET_BE_U_2(cp));
1520 	OF_FWD(2);
1521 	/* priority */
1522 	if (GET_BE_U_2(cp))
1523 		ND_PRINT(", priority %u", GET_BE_U_2(cp));
1524 	OF_FWD(2);
1525 	/* buffer_id */
1526 	if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
1527 	    command == OFPFC_MODIFY_STRICT)
1528 		ND_PRINT(", buffer_id %s",
1529 		         tok2str(bufferid_str, "0x%08x", GET_BE_U_4(cp)));
1530 	OF_FWD(4);
1531 	/* out_port */
1532 	if (command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT)
1533 		ND_PRINT(", out_port %s",
1534 		         tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1535 	OF_FWD(2);
1536 	/* flags */
1537 	ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
1538 	of_bitmap_print(ndo, ofpff_bm, GET_BE_U_2(cp), OFPFF_U);
1539 	OF_FWD(2);
1540 	/* actions */
1541 	of10_actions_print(ndo, "\n\t ", cp, len);
1542 }
1543 
1544 /* ibid */
1545 static void
1546 of10_port_mod_print(netdissect_options *ndo,
1547                     const u_char *cp, u_int len _U_)
1548 {
1549 	/* port_no */
1550 	ND_PRINT("\n\t port_no %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1551 	cp += 2;
1552 	/* hw_addr */
1553 	ND_PRINT(", hw_addr %s", GET_ETHERADDR_STRING(cp));
1554 	cp += MAC_ADDR_LEN;
1555 	/* config */
1556 	ND_PRINT("\n\t config 0x%08x", GET_BE_U_4(cp));
1557 	of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
1558 	cp += 4;
1559 	/* mask */
1560 	ND_PRINT("\n\t mask 0x%08x", GET_BE_U_4(cp));
1561 	of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
1562 	cp += 4;
1563 	/* advertise */
1564 	ND_PRINT("\n\t advertise 0x%08x", GET_BE_U_4(cp));
1565 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1566 	cp += 4;
1567 	/* pad */
1568 	/* Always the last field, check bounds. */
1569 	ND_TCHECK_4(cp);
1570 }
1571 
1572 /* [OF10] Section 5.3.4 */
1573 static void
1574 of10_queue_get_config_request_print(netdissect_options *ndo,
1575                                     const u_char *cp, u_int len _U_)
1576 {
1577 	/* port */
1578 	ND_PRINT("\n\t port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1579 	cp += 2;
1580 	/* pad */
1581 	/* Always the last field, check bounds. */
1582 	ND_TCHECK_2(cp);
1583 }
1584 
1585 /* ibid */
1586 static void
1587 of10_queue_get_config_reply_print(netdissect_options *ndo,
1588                                   const u_char *cp, u_int len)
1589 {
1590 	/* port */
1591 	ND_PRINT("\n\t port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1592 	OF_FWD(2);
1593 	/* pad */
1594 	/* Sometimes the last field, check bounds. */
1595 	OF_CHK_FWD(6);
1596 	/* queues */
1597 	of10_queues_print(ndo, cp, len);
1598 }
1599 
1600 /* [OF10] Section 5.3.5 */
1601 static void
1602 of10_stats_request_print(netdissect_options *ndo,
1603                          const u_char *cp, u_int len)
1604 {
1605 	uint16_t type;
1606 
1607 	/* type */
1608 	type = GET_BE_U_2(cp);
1609 	OF_FWD(2);
1610 	ND_PRINT("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type));
1611 	/* flags */
1612 	ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
1613 	if (GET_BE_U_2(cp))
1614 		ND_PRINT(" (bogus)");
1615 	OF_FWD(2);
1616 	/* type-specific body of one of fixed lengths */
1617 	switch(type) {
1618 	case OFPST_DESC:
1619 	case OFPST_TABLE:
1620 		if (len)
1621 			goto invalid;
1622 		return;
1623 	case OFPST_FLOW:
1624 	case OFPST_AGGREGATE:
1625 		if (len != OF_FLOW_STATS_REQUEST_FIXLEN)
1626 			goto invalid;
1627 		/* match */
1628 		of10_match_print(ndo, "\n\t ", cp);
1629 		OF_FWD(OF_MATCH_FIXLEN);
1630 		/* table_id */
1631 		ND_PRINT("\n\t table_id %s",
1632 			 tok2str(tableid_str, "%u", GET_U_1(cp)));
1633 		OF_FWD(1);
1634 		/* pad */
1635 		OF_FWD(1);
1636 		/* out_port */
1637 		ND_PRINT(", out_port %s",
1638 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1639 		return;
1640 	case OFPST_PORT:
1641 		if (len != OF_PORT_STATS_REQUEST_FIXLEN)
1642 			goto invalid;
1643 		/* port_no */
1644 		ND_PRINT("\n\t port_no %s",
1645 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1646 		OF_FWD(2);
1647 		/* pad */
1648 		/* Always the last field, check bounds. */
1649 		OF_CHK_FWD(6);
1650 		return;
1651 	case OFPST_QUEUE:
1652 		if (len != OF_QUEUE_STATS_REQUEST_FIXLEN)
1653 			goto invalid;
1654 		/* port_no */
1655 		ND_PRINT("\n\t port_no %s",
1656 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1657 		OF_FWD(2);
1658 		/* pad */
1659 		OF_FWD(2);
1660 		/* queue_id */
1661 		ND_PRINT(", queue_id %s",
1662 			 tok2str(ofpq_str, "%u", GET_BE_U_4(cp)));
1663 		return;
1664 	case OFPST_VENDOR:
1665 		of10_vendor_data_print(ndo, cp, len);
1666 		return;
1667 	}
1668 	return;
1669 
1670 invalid: /* skip the message body */
1671 	nd_print_invalid(ndo);
1672 	ND_TCHECK_LEN(cp, len);
1673 }
1674 
1675 /* ibid */
1676 static void
1677 of10_desc_stats_reply_print(netdissect_options *ndo,
1678                             const u_char *cp, u_int len)
1679 {
1680 	if (len != OF_DESC_STATS_REPLY_FIXLEN)
1681 		goto invalid;
1682 	/* mfr_desc */
1683 	ND_PRINT("\n\t  mfr_desc '");
1684 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1685 	ND_PRINT("'");
1686 	OF_FWD(DESC_STR_LEN);
1687 	/* hw_desc */
1688 	ND_PRINT("\n\t  hw_desc '");
1689 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1690 	ND_PRINT("'");
1691 	OF_FWD(DESC_STR_LEN);
1692 	/* sw_desc */
1693 	ND_PRINT("\n\t  sw_desc '");
1694 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1695 	ND_PRINT("'");
1696 	OF_FWD(DESC_STR_LEN);
1697 	/* serial_num */
1698 	ND_PRINT("\n\t  serial_num '");
1699 	nd_printjnp(ndo, cp, SERIAL_NUM_LEN);
1700 	ND_PRINT("'");
1701 	OF_FWD(SERIAL_NUM_LEN);
1702 	/* dp_desc */
1703 	ND_PRINT("\n\t  dp_desc '");
1704 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1705 	ND_PRINT("'");
1706 	return;
1707 
1708 invalid: /* skip the message body */
1709 	nd_print_invalid(ndo);
1710 	ND_TCHECK_LEN(cp, len);
1711 }
1712 
1713 /* ibid */
1714 static void
1715 of10_flow_stats_reply_print(netdissect_options *ndo,
1716                             const u_char *cp, u_int len)
1717 {
1718 	while (len) {
1719 		uint16_t entry_len;
1720 
1721 		if (len < OF_FLOW_STATS_REPLY_MINLEN)
1722 			goto invalid;
1723 		/* length */
1724 		entry_len = GET_BE_U_2(cp);
1725 		ND_PRINT("\n\t length %u", entry_len);
1726 		if (entry_len < OF_FLOW_STATS_REPLY_MINLEN || entry_len > len)
1727 			goto invalid;
1728 		OF_FWD(2);
1729 		/* table_id */
1730 		ND_PRINT(", table_id %s",
1731 			 tok2str(tableid_str, "%u", GET_U_1(cp)));
1732 		OF_FWD(1);
1733 		/* pad */
1734 		OF_FWD(1);
1735 		/* match */
1736 		of10_match_print(ndo, "\n\t  ", cp);
1737 		OF_FWD(OF_MATCH_FIXLEN);
1738 		/* duration_sec */
1739 		ND_PRINT("\n\t  duration_sec %u", GET_BE_U_4(cp));
1740 		OF_FWD(4);
1741 		/* duration_nsec */
1742 		ND_PRINT(", duration_nsec %u", GET_BE_U_4(cp));
1743 		OF_FWD(4);
1744 		/* priority */
1745 		ND_PRINT(", priority %u", GET_BE_U_2(cp));
1746 		OF_FWD(2);
1747 		/* idle_timeout */
1748 		ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
1749 		OF_FWD(2);
1750 		/* hard_timeout */
1751 		ND_PRINT(", hard_timeout %u", GET_BE_U_2(cp));
1752 		OF_FWD(2);
1753 		/* pad2 */
1754 		OF_FWD(6);
1755 		/* cookie */
1756 		ND_PRINT(", cookie 0x%016" PRIx64, GET_BE_U_8(cp));
1757 		OF_FWD(8);
1758 		/* packet_count */
1759 		ND_PRINT(", packet_count %" PRIu64, GET_BE_U_8(cp));
1760 		OF_FWD(8);
1761 		/* byte_count */
1762 		ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
1763 		OF_FWD(8);
1764 		/* actions */
1765 		of10_actions_print(ndo, "\n\t  ", cp, entry_len - OF_FLOW_STATS_REPLY_MINLEN);
1766 		OF_FWD(entry_len - OF_FLOW_STATS_REPLY_MINLEN);
1767 	} /* while */
1768 	return;
1769 
1770 invalid: /* skip the rest of flow statistics entries */
1771 	nd_print_invalid(ndo);
1772 	ND_TCHECK_LEN(cp, len);
1773 }
1774 
1775 /* ibid */
1776 static void
1777 of10_aggregate_stats_reply_print(netdissect_options *ndo,
1778                                  const u_char *cp, u_int len)
1779 {
1780 	if (len != OF_AGGREGATE_STATS_REPLY_FIXLEN)
1781 		goto invalid;
1782 	/* packet_count */
1783 	ND_PRINT("\n\t packet_count %" PRIu64, GET_BE_U_8(cp));
1784 	OF_FWD(8);
1785 	/* byte_count */
1786 	ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
1787 	OF_FWD(8);
1788 	/* flow_count */
1789 	ND_PRINT(", flow_count %u", GET_BE_U_4(cp));
1790 	OF_FWD(4);
1791 	/* pad */
1792 	/* Always the last field, check bounds. */
1793 	ND_TCHECK_4(cp);
1794 	return;
1795 
1796 invalid: /* skip the message body */
1797 	nd_print_invalid(ndo);
1798 	ND_TCHECK_LEN(cp, len);
1799 }
1800 
1801 /* ibid */
1802 static void
1803 of10_table_stats_reply_print(netdissect_options *ndo,
1804                              const u_char *cp, u_int len)
1805 {
1806 	while (len) {
1807 		if (len < OF_TABLE_STATS_REPLY_FIXLEN)
1808 			goto invalid;
1809 		/* table_id */
1810 		ND_PRINT("\n\t table_id %s",
1811 		         tok2str(tableid_str, "%u", GET_U_1(cp)));
1812 		OF_FWD(1);
1813 		/* pad */
1814 		OF_FWD(3);
1815 		/* name */
1816 		ND_PRINT(", name '");
1817 		nd_printjnp(ndo, cp, OFP_MAX_TABLE_NAME_LEN);
1818 		ND_PRINT("'");
1819 		OF_FWD(OFP_MAX_TABLE_NAME_LEN);
1820 		/* wildcards */
1821 		ND_PRINT("\n\t  wildcards 0x%08x", GET_BE_U_4(cp));
1822 		of_bitmap_print(ndo, ofpfw_bm, GET_BE_U_4(cp), OFPFW_U);
1823 		OF_FWD(4);
1824 		/* max_entries */
1825 		ND_PRINT("\n\t  max_entries %u", GET_BE_U_4(cp));
1826 		OF_FWD(4);
1827 		/* active_count */
1828 		ND_PRINT(", active_count %u", GET_BE_U_4(cp));
1829 		OF_FWD(4);
1830 		/* lookup_count */
1831 		ND_PRINT(", lookup_count %" PRIu64, GET_BE_U_8(cp));
1832 		OF_FWD(8);
1833 		/* matched_count */
1834 		ND_PRINT(", matched_count %" PRIu64, GET_BE_U_8(cp));
1835 		OF_FWD(8);
1836 	} /* while */
1837 	return;
1838 
1839 invalid: /* skip the undersized trailing data */
1840 	nd_print_invalid(ndo);
1841 	ND_TCHECK_LEN(cp, len);
1842 }
1843 
1844 /* ibid */
1845 static void
1846 of10_port_stats_reply_print(netdissect_options *ndo,
1847                             const u_char *cp, u_int len)
1848 {
1849 	while (len) {
1850 		if (len < OF_PORT_STATS_REPLY_FIXLEN)
1851 			goto invalid;
1852 		/* port_no */
1853 		ND_PRINT("\n\t  port_no %s",
1854 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1855 		OF_FWD(2);
1856 		if (ndo->ndo_vflag < 2) {
1857 			OF_CHK_FWD(OF_PORT_STATS_REPLY_FIXLEN - 2);
1858 			continue;
1859 		}
1860 		/* pad */
1861 		OF_FWD(6);
1862 		/* rx_packets */
1863 		ND_PRINT(", rx_packets %" PRIu64, GET_BE_U_8(cp));
1864 		OF_FWD(8);
1865 		/* tx_packets */
1866 		ND_PRINT(", tx_packets %" PRIu64, GET_BE_U_8(cp));
1867 		OF_FWD(8);
1868 		/* rx_bytes */
1869 		ND_PRINT(", rx_bytes %" PRIu64, GET_BE_U_8(cp));
1870 		OF_FWD(8);
1871 		/* tx_bytes */
1872 		ND_PRINT(", tx_bytes %" PRIu64, GET_BE_U_8(cp));
1873 		OF_FWD(8);
1874 		/* rx_dropped */
1875 		ND_PRINT(", rx_dropped %" PRIu64, GET_BE_U_8(cp));
1876 		OF_FWD(8);
1877 		/* tx_dropped */
1878 		ND_PRINT(", tx_dropped %" PRIu64, GET_BE_U_8(cp));
1879 		OF_FWD(8);
1880 		/* rx_errors */
1881 		ND_PRINT(", rx_errors %" PRIu64, GET_BE_U_8(cp));
1882 		OF_FWD(8);
1883 		/* tx_errors */
1884 		ND_PRINT(", tx_errors %" PRIu64, GET_BE_U_8(cp));
1885 		OF_FWD(8);
1886 		/* rx_frame_err */
1887 		ND_PRINT(", rx_frame_err %" PRIu64, GET_BE_U_8(cp));
1888 		OF_FWD(8);
1889 		/* rx_over_err */
1890 		ND_PRINT(", rx_over_err %" PRIu64, GET_BE_U_8(cp));
1891 		OF_FWD(8);
1892 		/* rx_crc_err */
1893 		ND_PRINT(", rx_crc_err %" PRIu64, GET_BE_U_8(cp));
1894 		OF_FWD(8);
1895 		/* collisions */
1896 		ND_PRINT(", collisions %" PRIu64, GET_BE_U_8(cp));
1897 		OF_FWD(8);
1898 	} /* while */
1899 	return;
1900 
1901 invalid: /* skip the undersized trailing data */
1902 	nd_print_invalid(ndo);
1903 	ND_TCHECK_LEN(cp, len);
1904 }
1905 
1906 /* ibid */
1907 static void
1908 of10_queue_stats_reply_print(netdissect_options *ndo,
1909                              const u_char *cp, u_int len)
1910 {
1911 	while (len) {
1912 		if (len < OF_QUEUE_STATS_REPLY_FIXLEN)
1913 			goto invalid;
1914 		/* port_no */
1915 		ND_PRINT("\n\t  port_no %s",
1916 		         tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1917 		OF_FWD(2);
1918 		/* pad */
1919 		OF_FWD(2);
1920 		/* queue_id */
1921 		ND_PRINT(", queue_id %u", GET_BE_U_4(cp));
1922 		OF_FWD(4);
1923 		/* tx_bytes */
1924 		ND_PRINT(", tx_bytes %" PRIu64, GET_BE_U_8(cp));
1925 		OF_FWD(8);
1926 		/* tx_packets */
1927 		ND_PRINT(", tx_packets %" PRIu64, GET_BE_U_8(cp));
1928 		OF_FWD(8);
1929 		/* tx_errors */
1930 		ND_PRINT(", tx_errors %" PRIu64, GET_BE_U_8(cp));
1931 		OF_FWD(8);
1932 	} /* while */
1933 	return;
1934 
1935 invalid: /* skip the undersized trailing data */
1936 	nd_print_invalid(ndo);
1937 	ND_TCHECK_LEN(cp, len);
1938 }
1939 
1940 /* ibid */
1941 static void
1942 of10_stats_reply_print(netdissect_options *ndo,
1943                        const u_char *cp, u_int len)
1944 {
1945 	uint16_t type;
1946 
1947 	/* type */
1948 	type = GET_BE_U_2(cp);
1949 	ND_PRINT("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type));
1950 	OF_FWD(2);
1951 	/* flags */
1952 	ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
1953 	of_bitmap_print(ndo, ofpsf_reply_bm, GET_BE_U_2(cp), OFPSF_REPLY_U);
1954 	OF_FWD(2);
1955 
1956 	if (ndo->ndo_vflag > 0) {
1957 		void (*decoder)(netdissect_options *, const u_char *, u_int) =
1958 			type == OFPST_DESC      ? of10_desc_stats_reply_print      :
1959 			type == OFPST_FLOW      ? of10_flow_stats_reply_print      :
1960 			type == OFPST_AGGREGATE ? of10_aggregate_stats_reply_print :
1961 			type == OFPST_TABLE     ? of10_table_stats_reply_print     :
1962 			type == OFPST_PORT      ? of10_port_stats_reply_print      :
1963 			type == OFPST_QUEUE     ? of10_queue_stats_reply_print     :
1964 			type == OFPST_VENDOR    ? of10_vendor_data_print           :
1965 			NULL;
1966 		if (decoder != NULL) {
1967 			decoder(ndo, cp, len);
1968 			return;
1969 		}
1970 	}
1971 	ND_TCHECK_LEN(cp, len);
1972 }
1973 
1974 /* [OF10] Section 5.3.6 */
1975 static void
1976 of10_packet_out_print(netdissect_options *ndo,
1977                       const u_char *cp, u_int len)
1978 {
1979 	uint16_t actions_len;
1980 
1981 	/* buffer_id */
1982 	ND_PRINT("\n\t buffer_id 0x%08x", GET_BE_U_4(cp));
1983 	OF_FWD(4);
1984 	/* in_port */
1985 	ND_PRINT(", in_port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1986 	OF_FWD(2);
1987 	/* actions_len */
1988 	actions_len = GET_BE_U_2(cp);
1989 	OF_FWD(2);
1990 	if (actions_len > len)
1991 		goto invalid;
1992 	/* actions */
1993 	of10_actions_print(ndo, "\n\t ", cp, actions_len);
1994 	OF_FWD(actions_len);
1995 	/* data */
1996 	of10_packet_data_print(ndo, cp, len);
1997 	return;
1998 
1999 invalid: /* skip the rest of the message body */
2000 	nd_print_invalid(ndo);
2001 	ND_TCHECK_LEN(cp, len);
2002 }
2003 
2004 /* [OF10] Section 5.4.1 */
2005 static void
2006 of10_packet_in_print(netdissect_options *ndo,
2007                      const u_char *cp, u_int len)
2008 {
2009 	/* buffer_id */
2010 	ND_PRINT("\n\t buffer_id %s",
2011 	         tok2str(bufferid_str, "0x%08x", GET_BE_U_4(cp)));
2012 	OF_FWD(4);
2013 	/* total_len */
2014 	ND_PRINT(", total_len %u", GET_BE_U_2(cp));
2015 	OF_FWD(2);
2016 	/* in_port */
2017 	ND_PRINT(", in_port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
2018 	OF_FWD(2);
2019 	/* reason */
2020 	ND_PRINT(", reason %s",
2021 		 tok2str(ofpr_str, "invalid (0x%02x)", GET_U_1(cp)));
2022 	OF_FWD(1);
2023 	/* pad */
2024 	/* Sometimes the last field, check bounds. */
2025 	OF_CHK_FWD(1);
2026 	/* data */
2027 	of10_packet_data_print(ndo, cp, len);
2028 }
2029 
2030 /* [OF10] Section 5.4.2 */
2031 static void
2032 of10_flow_removed_print(netdissect_options *ndo,
2033                         const u_char *cp, u_int len _U_)
2034 {
2035 	/* match */
2036 	of10_match_print(ndo, "\n\t ", cp);
2037 	cp += OF_MATCH_FIXLEN;
2038 	/* cookie */
2039 	ND_PRINT("\n\t cookie 0x%016" PRIx64, GET_BE_U_8(cp));
2040 	cp += 8;
2041 	/* priority */
2042 	if (GET_BE_U_2(cp))
2043 		ND_PRINT(", priority %u", GET_BE_U_2(cp));
2044 	cp += 2;
2045 	/* reason */
2046 	ND_PRINT(", reason %s",
2047 	         tok2str(ofprr_str, "unknown (0x%02x)", GET_U_1(cp)));
2048 	cp += 1;
2049 	/* pad */
2050 	cp += 1;
2051 	/* duration_sec */
2052 	ND_PRINT(", duration_sec %u", GET_BE_U_4(cp));
2053 	cp += 4;
2054 	/* duration_nsec */
2055 	ND_PRINT(", duration_nsec %u", GET_BE_U_4(cp));
2056 	cp += 4;
2057 	/* idle_timeout */
2058 	if (GET_BE_U_2(cp))
2059 		ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
2060 	cp += 2;
2061 	/* pad2 */
2062 	cp += 2;
2063 	/* packet_count */
2064 	ND_PRINT(", packet_count %" PRIu64, GET_BE_U_8(cp));
2065 	cp += 8;
2066 	/* byte_count */
2067 	ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
2068 }
2069 
2070 /* [OF10] Section 5.4.3 */
2071 static void
2072 of10_port_status_print(netdissect_options *ndo,
2073                        const u_char *cp, u_int len _U_)
2074 {
2075 	/* reason */
2076 	ND_PRINT("\n\t reason %s",
2077 	         tok2str(ofppr_str, "invalid (0x%02x)", GET_U_1(cp)));
2078 	cp += 1;
2079 	/* pad */
2080 	/* No need to check bounds, more data follows. */
2081 	cp += 7;
2082 	/* desc */
2083 	of10_phy_port_print(ndo, cp);
2084 }
2085 
2086 /* [OF10] Section 5.4.4 */
2087 static void
2088 of10_error_print(netdissect_options *ndo,
2089                  const u_char *cp, u_int len)
2090 {
2091 	uint16_t type, code;
2092 	const struct tok *code_str;
2093 
2094 	/* type */
2095 	type = GET_BE_U_2(cp);
2096 	OF_FWD(2);
2097 	ND_PRINT("\n\t type %s", tok2str(ofpet_str, "invalid (0x%04x)", type));
2098 	/* code */
2099 	code = GET_BE_U_2(cp);
2100 	OF_FWD(2);
2101 	code_str = uint2tokary(of10_ofpet2tokary, type);
2102 	if (code_str != NULL)
2103 		ND_PRINT(", code %s",
2104 		         tok2str(code_str, "invalid (0x%04x)", code));
2105 	else
2106 		ND_PRINT(", code invalid (0x%04x)", code);
2107 	/* data */
2108 	of_data_print(ndo, cp, len);
2109 }
2110 
2111 static const struct of_msgtypeinfo of10_msgtypeinfo[OFPT_MAX + 1] = {
2112 	/*
2113 	 * [OF10] Section 5.5.1
2114 	 * Variable-size data.
2115 	 */
2116 	{
2117 		"HELLO",                    of_data_print,
2118 		REQ_MINLEN,                 0
2119 	},
2120 	/*
2121 	 * [OF10] Section 5.4.4
2122 	 * A fixed-size message body and variable-size data.
2123 	 */
2124 	{
2125 		"ERROR",                    of10_error_print,
2126 		REQ_MINLEN,                 OF_ERROR_MSG_MINLEN
2127 	},
2128 	/*
2129 	 * [OF10] Section 5.5.2
2130 	 * Variable-size data.
2131 	 */
2132 	{
2133 		"ECHO_REQUEST",             of_data_print,
2134 		REQ_MINLEN,                 0
2135 	},
2136 	/*
2137 	 * [OF10] Section 5.5.3
2138 	 * Variable-size data.
2139 	 */
2140 	{
2141 		"ECHO_REPLY",               of_data_print,
2142 		REQ_MINLEN,                 0
2143 	},
2144 	/*
2145 	 * [OF10] Section 5.5.4
2146 	 * A fixed-size message body and variable-size data.
2147 	 */
2148 	{
2149 		"VENDOR",                   of10_vendor_message_print,
2150 		REQ_MINLEN,                 OF_VENDOR_MINLEN
2151 	},
2152 	/*
2153 	 * [OF10] Section 5.3.1
2154 	 * No message body.
2155 	 */
2156 	{
2157 		"FEATURES_REQUEST",         NULL,
2158 		REQ_FIXLEN,                 0
2159 	},
2160 	/*
2161 	 * [OF10] Section 5.3.1
2162 	 * A fixed-size message body and n * fixed-size data units.
2163 	 */
2164 	{
2165 		"FEATURES_REPLY",           of10_features_reply_print,
2166 		REQ_MINLEN,                 OF_FEATURES_REPLY_MINLEN
2167 	},
2168 	/*
2169 	 * [OF10] Section 5.3.2
2170 	 * No message body.
2171 	 */
2172 	{
2173 		"GET_CONFIG_REQUEST",       NULL,
2174 		REQ_FIXLEN,                 0
2175 	},
2176 	/*
2177 	 * [OF10] Section 5.3.2
2178 	 * A fixed-size message body.
2179 	 */
2180 	{
2181 		"GET_CONFIG_REPLY",         of10_switch_config_msg_print,
2182 		REQ_FIXLEN,                 OF_SWITCH_CONFIG_FIXLEN
2183 	},
2184 	/*
2185 	 * [OF10] Section 5.3.2
2186 	 * A fixed-size message body.
2187 	 */
2188 	{
2189 		"SET_CONFIG",               of10_switch_config_msg_print,
2190 		REQ_FIXLEN,                 OF_SWITCH_CONFIG_FIXLEN
2191 	},
2192 	/*
2193 	 * [OF10] Section 5.4.1
2194 	 * A fixed-size message body and variable-size data.
2195 	 * (The 2 mock octets count in OF_PACKET_IN_MINLEN only.)
2196 	 */
2197 	{
2198 		"PACKET_IN",                of10_packet_in_print,
2199 		REQ_MINLEN,                 OF_PACKET_IN_MINLEN - 2
2200 	},
2201 	/*
2202 	 * [OF10] Section 5.4.2
2203 	 * A fixed-size message body.
2204 	 */
2205 	{
2206 		"FLOW_REMOVED",             of10_flow_removed_print,
2207 		REQ_FIXLEN,                 OF_FLOW_REMOVED_FIXLEN
2208 	},
2209 	/*
2210 	 * [OF10] Section 5.4.3
2211 	 * A fixed-size message body.
2212 	 */
2213 	{
2214 		"PORT_STATUS",              of10_port_status_print,
2215 		REQ_FIXLEN,                 OF_PORT_STATUS_FIXLEN
2216 	},
2217 	/*
2218 	 * [OF10] Section 5.3.6
2219 	 * A fixed-size message body, n * variable-size data units and
2220 	 * variable-size data.
2221 	 */
2222 	{
2223 		"PACKET_OUT",               of10_packet_out_print,
2224 		REQ_MINLEN,                 OF_PACKET_OUT_MINLEN
2225 	},
2226 	/*
2227 	 * [OF10] Section 5.3.3
2228 	 * A fixed-size message body and n * variable-size data units.
2229 	 */
2230 	{
2231 		"FLOW_MOD",                 of10_flow_mod_print,
2232 		REQ_MINLEN,                 OF_FLOW_MOD_MINLEN
2233 	},
2234 	/*
2235 	 * [OF10] Section 5.3.3
2236 	 * A fixed-size message body.
2237 	 */
2238 	{
2239 		"PORT_MOD",                 of10_port_mod_print,
2240 		REQ_FIXLEN,                 OF_PORT_MOD_FIXLEN
2241 	},
2242 	/*
2243 	 * [OF10] Section 5.3.5
2244 	 * A fixed-size message body and possibly more data of varying size
2245 	 * and structure.
2246 	 */
2247 	{
2248 		"STATS_REQUEST",            of10_stats_request_print,
2249 		REQ_MINLEN,                 OF_STATS_REQUEST_MINLEN
2250 	},
2251 	/*
2252 	 * [OF10] Section 5.3.5
2253 	 * A fixed-size message body and possibly more data of varying size
2254 	 * and structure.
2255 	 */
2256 	{
2257 		"STATS_REPLY",              of10_stats_reply_print,
2258 		REQ_MINLEN,                 OF_STATS_REPLY_MINLEN
2259 	},
2260 	/*
2261 	 * [OF10] Section 5.3.7
2262 	 * No message body.
2263 	 */
2264 	{
2265 		"BARRIER_REQUEST",          NULL,
2266 		REQ_FIXLEN,                 0
2267 	},
2268 	/*
2269 	 * [OF10] Section 5.3.7
2270 	 * No message body.
2271 	 */
2272 	{
2273 		"BARRIER_REPLY",            NULL,
2274 		REQ_FIXLEN,                 0
2275 	},
2276 	/*
2277 	 * [OF10] Section 5.3.4
2278 	 * A fixed-size message body.
2279 	 */
2280 	{
2281 		"QUEUE_GET_CONFIG_REQUEST", of10_queue_get_config_request_print,
2282 		REQ_FIXLEN,                 OF_QUEUE_GET_CONFIG_REQUEST_FIXLEN
2283 	},
2284 	/*
2285 	 * [OF10] Section 5.3.4
2286 	 * A fixed-size message body and n * variable-size data units.
2287 	 */
2288 	{
2289 		"QUEUE_GET_CONFIG_REPLY",   of10_queue_get_config_reply_print,
2290 		REQ_MINLEN,                 OF_QUEUE_GET_CONFIG_REPLY_MINLEN
2291 	},
2292 };
2293 
2294 const struct of_msgtypeinfo *
2295 of10_identify_msgtype(const uint8_t type)
2296 {
2297 	return type <= OFPT_MAX ? &of10_msgtypeinfo[type] : NULL;
2298 }
2299