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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 invalid 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 /* \summary: OpenFlow protocol version 1.0 printer */
60 
61 #ifdef HAVE_CONFIG_H
62 #include "config.h"
63 #endif
64 
65 #include <netdissect-stdinc.h>
66 
67 #include "netdissect.h"
68 #include "extract.h"
69 #include "addrtoname.h"
70 #include "ether.h"
71 #include "ethertype.h"
72 #include "ipproto.h"
73 #include "oui.h"
74 #include "openflow.h"
75 
76 static const char tstr[] = " [|openflow]";
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 *
vlan_str(const uint16_t vid)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 *
pcp_str(const uint8_t pcp)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
of10_bitmap_print(netdissect_options * ndo,const struct tok * t,const uint32_t v,const uint32_t u)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 *
of10_data_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_bsn_message_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid: /* skip the undersized data */
952 	ND_PRINT((ndo, "%s", istr));
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 *
of10_bsn_actions_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid;
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 invalid:
1026 	ND_PRINT((ndo, "%s", istr));
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 *
of10_vendor_action_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid: /* skip the undersized data */
1055 	ND_PRINT((ndo, "%s", istr));
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 *
of10_vendor_message_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid: /* skip the undersized data */
1084 	ND_PRINT((ndo, "%s", istr));
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 *
of10_vendor_data_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid: /* skip the undersized data */
1110 	ND_PRINT((ndo, "%s", istr));
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 *
of10_packet_data_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_phy_ports_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid: /* skip the undersized trailing data */
1207 	ND_PRINT((ndo, "%s", istr));
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 *
of10_queue_props_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid;
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 invalid: /* skip the rest of queue properties */
1283 	ND_PRINT((ndo, "%s", istr));
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 *
of10_queues_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid;
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 invalid: /* skip the rest of queues */
1331 	ND_PRINT((ndo, "%s", istr));
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 *
of10_match_print(netdissect_options * ndo,const char * pfx,const u_char * cp,const u_char * ep)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 *
of10_actions_print(netdissect_options * ndo,const char * pfx,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid;
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 invalid: /* skip the rest of actions */
1602 	ND_PRINT((ndo, "%s", istr));
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 *
of10_features_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_flow_mod_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_port_mod_print(netdissect_options * ndo,const u_char * cp,const u_char * ep)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 *
of10_stats_request_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
1770 		return cp;
1771 	case OFPST_FLOW:
1772 	case OFPST_AGGREGATE:
1773 		if (len != OF_FLOW_STATS_REQUEST_LEN)
1774 			goto invalid;
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 invalid;
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 invalid;
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 invalid: /* skip the message body */
1819 	ND_PRINT((ndo, "%s", istr));
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 *
of10_desc_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid: /* skip the message body */
1866 	ND_PRINT((ndo, "%s", istr));
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 *
of10_flow_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid;
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 invalid: /* skip the rest of flow statistics entries */
1947 	ND_PRINT((ndo, "%s", istr));
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 *
of10_aggregate_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid: /* skip the message body */
1980 	ND_PRINT((ndo, "%s", istr));
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 *
of10_table_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid: /* skip the undersized trailing data */
2039 	ND_PRINT((ndo, "%s", istr));
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 *
of10_port_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid: /* skip the undersized trailing data */
2124 	ND_PRINT((ndo, "%s", istr));
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 *
of10_queue_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,u_int len)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 invalid;
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 invalid: /* skip the undersized trailing data */
2172 	ND_PRINT((ndo, "%s", istr));
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 *
of10_stats_reply_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_packet_out_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 invalid;
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 invalid: /* skip the rest of the message body */
2250 	ND_PRINT((ndo, "%s", istr));
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 *
of10_packet_in_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_flow_removed_print(netdissect_options * ndo,const u_char * cp,const u_char * ep)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 *
of10_error_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const u_int len)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 *
of10_header_body_print(netdissect_options * ndo,const u_char * cp,const u_char * ep,const uint8_t type,const uint16_t len,const uint32_t xid)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 	 * invalid, 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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid;
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 invalid: /* skip the message body */
2553 	ND_PRINT((ndo, "%s", istr));
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 }
2561