xref: /freebsd/contrib/tcpdump/print-openflow-1.0.c (revision 0a7e5f1f02aad2ff5fff1c60f44c6975fd07e1d9) 
1 /*
2  * This module implements decoding of OpenFlow protocol version 1.0 (wire
3  * protocol 0x01). The decoder implements terse (default), detailed (-v) and
4  * full (-vv) output formats and, as much as each format implies, detects and
5  * tries to work around sizing anomalies inside the messages. The decoder marks
6  * up bogus values of selected message fields and decodes partially captured
7  * messages up to the snapshot end. It is based on the specification below:
8  *
9  * [OF10] https://www.opennetworking.org/wp-content/uploads/2013/04/openflow-spec-v1.0.0.pdf
10  *
11  * Most functions in this file take the following arguments:
12  * * cp -- the pointer to the first octet to decode
13  * * len -- the declared length of the structure to decode
14  * The convention is that a printer function returns iff the given structure is
15  * completely within the packet buffer; otherwise it processes the part that is
16  * within the buffer, sooner of later takes the "truncated packet" shortcut via
17  * longjmp() and never returns. With that in mind, the function may return
18  * without printing the structure completely if it is invalid or the ndo_vflag
19  * value is not high enough. This way the calling function can try to decode
20  * the next data item.
21  *
22  * Decoding of Ethernet frames nested in OFPT_PACKET_IN and OFPT_PACKET_OUT
23  * messages is done only when the verbosity level set by command-line argument
24  * is "-vvv" or higher. In that case the verbosity level is temporarily
25  * decremented by 3 during the nested frame decoding. For example, running
26  * tcpdump with "-vvvv" will do full decoding of OpenFlow and "-v" decoding of
27  * the nested frames.
28  *
29  * Partial decoding of Big Switch Networks vendor extensions is done after the
30  * oftest (OpenFlow Testing Framework) and Loxigen (library generator) source
31  * code.
32  *
33  *
34  * Copyright (c) 2013 The TCPDUMP project
35  * All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  * 1. Redistributions of source code must retain the above copyright
41  *    notice, this list of conditions and the following disclaimer.
42  * 2. Redistributions in binary form must reproduce the above copyright
43  *    notice, this list of conditions and the following disclaimer in the
44  *    documentation and/or other materials provided with the distribution.
45  *
46  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
47  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
48  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
49  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
50  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
51  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
52  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
53  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
54  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
56  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
57  * POSSIBILITY OF SUCH DAMAGE.
58  */
59 
60 /* \summary: OpenFlow protocol version 1.0 printer */
61 
62 #include <config.h>
63 
64 #include "netdissect-stdinc.h"
65 
66 #define ND_LONGJMP_FROM_TCHECK
67 #include "netdissect.h"
68 #include "extract.h"
69 #include "addrtoname.h"
70 #include "ethertype.h"
71 #include "ipproto.h"
72 #include "oui.h"
73 #include "openflow.h"
74 
75 
76 #define OFPT_HELLO                    0x00
77 #define OFPT_ERROR                    0x01
78 #define OFPT_ECHO_REQUEST             0x02
79 #define OFPT_ECHO_REPLY               0x03
80 #define OFPT_VENDOR                   0x04
81 #define OFPT_FEATURES_REQUEST         0x05
82 #define OFPT_FEATURES_REPLY           0x06
83 #define OFPT_GET_CONFIG_REQUEST       0x07
84 #define OFPT_GET_CONFIG_REPLY         0x08
85 #define OFPT_SET_CONFIG               0x09
86 #define OFPT_PACKET_IN                0x0a
87 #define OFPT_FLOW_REMOVED             0x0b
88 #define OFPT_PORT_STATUS              0x0c
89 #define OFPT_PACKET_OUT               0x0d
90 #define OFPT_FLOW_MOD                 0x0e
91 #define OFPT_PORT_MOD                 0x0f
92 #define OFPT_STATS_REQUEST            0x10
93 #define OFPT_STATS_REPLY              0x11
94 #define OFPT_BARRIER_REQUEST          0x12
95 #define OFPT_BARRIER_REPLY            0x13
96 #define OFPT_QUEUE_GET_CONFIG_REQUEST 0x14
97 #define OFPT_QUEUE_GET_CONFIG_REPLY   0x15
98 #define OFPT_MAX                      OFPT_QUEUE_GET_CONFIG_REPLY
99 
100 #define OFPPC_PORT_DOWN    (1U <<0)
101 #define OFPPC_NO_STP       (1U <<1)
102 #define OFPPC_NO_RECV      (1U <<2)
103 #define OFPPC_NO_RECV_STP  (1U <<3)
104 #define OFPPC_NO_FLOOD     (1U <<4)
105 #define OFPPC_NO_FWD       (1U <<5)
106 #define OFPPC_NO_PACKET_IN (1U <<6)
107 static const struct tok ofppc_bm[] = {
108 	{ OFPPC_PORT_DOWN,    "PORT_DOWN"    },
109 	{ OFPPC_NO_STP,       "NO_STP"       },
110 	{ OFPPC_NO_RECV,      "NO_RECV"      },
111 	{ OFPPC_NO_RECV_STP,  "NO_RECV_STP"  },
112 	{ OFPPC_NO_FLOOD,     "NO_FLOOD"     },
113 	{ OFPPC_NO_FWD,       "NO_FWD"       },
114 	{ OFPPC_NO_PACKET_IN, "NO_PACKET_IN" },
115 	{ 0, NULL }
116 };
117 #define OFPPC_U (~(OFPPC_PORT_DOWN | OFPPC_NO_STP | OFPPC_NO_RECV | \
118                    OFPPC_NO_RECV_STP | OFPPC_NO_FLOOD | OFPPC_NO_FWD | \
119                    OFPPC_NO_PACKET_IN))
120 
121 /*
122  * [OF10] lists all FPPS_ constants in one enum, but they mean a 1-bit bitmap
123  * in the least significant octet and a 2-bit code point in the next octet.
124  * Remember to mix or to separate these two parts as the context requires.
125  */
126 #define OFPPS_LINK_DOWN   (1U << 0) /* bitmap             */
127 #define OFPPS_STP_LISTEN  (0U << 8) /* code point         */
128 #define OFPPS_STP_LEARN   (1U << 8) /* code point         */
129 #define OFPPS_STP_FORWARD (2U << 8) /* code point         */
130 #define OFPPS_STP_BLOCK   (3U << 8) /* code point         */
131 #define OFPPS_STP_MASK    (3U << 8) /* code point bitmask */
132 static const struct tok ofpps_stp_str[] = {
133 	{ OFPPS_STP_LISTEN,  "STP_LISTEN"  },
134 	{ OFPPS_STP_LEARN,   "STP_LEARN"   },
135 	{ OFPPS_STP_FORWARD, "STP_FORWARD" },
136 	{ OFPPS_STP_BLOCK,   "STP_BLOCK"   },
137 	{ 0, NULL }
138 };
139 #define OFPPS_U (~(OFPPS_LINK_DOWN | OFPPS_STP_LISTEN | OFPPS_STP_LEARN | \
140                    OFPPS_STP_FORWARD | OFPPS_STP_BLOCK))
141 
142 #define OFPP_MAX        0xff00U
143 #define OFPP_IN_PORT    0xfff8U
144 #define OFPP_TABLE      0xfff9U
145 #define OFPP_NORMAL     0xfffaU
146 #define OFPP_FLOOD      0xfffbU
147 #define OFPP_ALL        0xfffcU
148 #define OFPP_CONTROLLER 0xfffdU
149 #define OFPP_LOCAL      0xfffeU
150 #define OFPP_NONE       0xffffU
151 static const struct tok ofpp_str[] = {
152 	{ OFPP_MAX,        "MAX"        },
153 	{ OFPP_IN_PORT,    "IN_PORT"    },
154 	{ OFPP_TABLE,      "TABLE"      },
155 	{ OFPP_NORMAL,     "NORMAL"     },
156 	{ OFPP_FLOOD,      "FLOOD"      },
157 	{ OFPP_ALL,        "ALL"        },
158 	{ OFPP_CONTROLLER, "CONTROLLER" },
159 	{ OFPP_LOCAL,      "LOCAL"      },
160 	{ OFPP_NONE,       "NONE"       },
161 	{ 0, NULL }
162 };
163 
164 #define OFPPF_10MB_HD    (1U << 0)
165 #define OFPPF_10MB_FD    (1U << 1)
166 #define OFPPF_100MB_HD   (1U << 2)
167 #define OFPPF_100MB_FD   (1U << 3)
168 #define OFPPF_1GB_HD     (1U << 4)
169 #define OFPPF_1GB_FD     (1U << 5)
170 #define OFPPF_10GB_FD    (1U << 6)
171 #define OFPPF_COPPER     (1U << 7)
172 #define OFPPF_FIBER      (1U << 8)
173 #define OFPPF_AUTONEG    (1U << 9)
174 #define OFPPF_PAUSE      (1U <<10)
175 #define OFPPF_PAUSE_ASYM (1U <<11)
176 static const struct tok ofppf_bm[] = {
177 	{ OFPPF_10MB_HD,    "10MB_HD"    },
178 	{ OFPPF_10MB_FD,    "10MB_FD"    },
179 	{ OFPPF_100MB_HD,   "100MB_HD"   },
180 	{ OFPPF_100MB_FD,   "100MB_FD"   },
181 	{ OFPPF_1GB_HD,     "1GB_HD"     },
182 	{ OFPPF_1GB_FD,     "1GB_FD"     },
183 	{ OFPPF_10GB_FD,    "10GB_FD"    },
184 	{ OFPPF_COPPER,     "COPPER"     },
185 	{ OFPPF_FIBER,      "FIBER"      },
186 	{ OFPPF_AUTONEG,    "AUTONEG"    },
187 	{ OFPPF_PAUSE,      "PAUSE"      },
188 	{ OFPPF_PAUSE_ASYM, "PAUSE_ASYM" },
189 	{ 0, NULL }
190 };
191 #define OFPPF_U (~(OFPPF_10MB_HD | OFPPF_10MB_FD | OFPPF_100MB_HD | \
192                    OFPPF_100MB_FD | OFPPF_1GB_HD | OFPPF_1GB_FD | \
193                    OFPPF_10GB_FD | OFPPF_COPPER | OFPPF_FIBER | \
194                    OFPPF_AUTONEG | OFPPF_PAUSE | OFPPF_PAUSE_ASYM))
195 
196 #define OFPQT_NONE     0x0000
197 #define OFPQT_MIN_RATE 0x0001
198 static const struct tok ofpqt_str[] = {
199 	{ OFPQT_NONE,     "NONE"     },
200 	{ OFPQT_MIN_RATE, "MIN_RATE" },
201 	{ 0, NULL }
202 };
203 
204 #define OFPFW_IN_PORT      (1U <<0)
205 #define OFPFW_DL_VLAN      (1U <<1)
206 #define OFPFW_DL_SRC       (1U <<2)
207 #define OFPFW_DL_DST       (1U <<3)
208 #define OFPFW_DL_TYPE      (1U <<4)
209 #define OFPFW_NW_PROTO     (1U <<5)
210 #define OFPFW_TP_SRC       (1U <<6)
211 #define OFPFW_TP_DST       (1U <<7)
212 #define OFPFW_NW_SRC_SHIFT 8
213 #define OFPFW_NW_SRC_BITS  6
214 #define OFPFW_NW_SRC_MASK  (((1U <<OFPFW_NW_SRC_BITS) - 1) << OFPFW_NW_SRC_SHIFT)
215 #define OFPFW_NW_DST_SHIFT 14
216 #define OFPFW_NW_DST_BITS  6
217 #define OFPFW_NW_DST_MASK  (((1U <<OFPFW_NW_DST_BITS) - 1) << OFPFW_NW_DST_SHIFT)
218 #define OFPFW_DL_VLAN_PCP  (1U <<20)
219 #define OFPFW_NW_TOS       (1U <<21)
220 #define OFPFW_ALL          ((1U <<22) - 1)
221 static const struct tok ofpfw_bm[] = {
222 	{ OFPFW_IN_PORT,     "IN_PORT"     },
223 	{ OFPFW_DL_VLAN,     "DL_VLAN"     },
224 	{ OFPFW_DL_SRC,      "DL_SRC"      },
225 	{ OFPFW_DL_DST,      "DL_DST"      },
226 	{ OFPFW_DL_TYPE,     "DL_TYPE"     },
227 	{ OFPFW_NW_PROTO,    "NW_PROTO"    },
228 	{ OFPFW_TP_SRC,      "TP_SRC"      },
229 	{ OFPFW_TP_DST,      "TP_DST"      },
230 	{ OFPFW_DL_VLAN_PCP, "DL_VLAN_PCP" },
231 	{ OFPFW_NW_TOS,      "NW_TOS"      },
232 	{ 0, NULL }
233 };
234 /* The above array does not include bits 8~13 (OFPFW_NW_SRC_*) and 14~19
235  * (OFPFW_NW_DST_*), which are not a part of the bitmap and require decoding
236  * other than that of tok2str(). The macro below includes these bits such that
237  * they are not reported as bogus in the decoding. */
238 #define OFPFW_U (~(OFPFW_ALL))
239 
240 #define OFPAT_OUTPUT       0x0000U
241 #define OFPAT_SET_VLAN_VID 0x0001U
242 #define OFPAT_SET_VLAN_PCP 0x0002U
243 #define OFPAT_STRIP_VLAN   0x0003U
244 #define OFPAT_SET_DL_SRC   0x0004U
245 #define OFPAT_SET_DL_DST   0x0005U
246 #define OFPAT_SET_NW_SRC   0x0006U
247 #define OFPAT_SET_NW_DST   0x0007U
248 #define OFPAT_SET_NW_TOS   0x0008U
249 #define OFPAT_SET_TP_SRC   0x0009U
250 #define OFPAT_SET_TP_DST   0x000aU
251 #define OFPAT_ENQUEUE      0x000bU
252 #define OFPAT_VENDOR       0xffffU
253 static const struct tok ofpat_str[] = {
254 	{ OFPAT_OUTPUT,       "OUTPUT"       },
255 	{ OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
256 	{ OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
257 	{ OFPAT_STRIP_VLAN,   "STRIP_VLAN"   },
258 	{ OFPAT_SET_DL_SRC,   "SET_DL_SRC"   },
259 	{ OFPAT_SET_DL_DST,   "SET_DL_DST"   },
260 	{ OFPAT_SET_NW_SRC,   "SET_NW_SRC"   },
261 	{ OFPAT_SET_NW_DST,   "SET_NW_DST"   },
262 	{ OFPAT_SET_NW_TOS,   "SET_NW_TOS"   },
263 	{ OFPAT_SET_TP_SRC,   "SET_TP_SRC"   },
264 	{ OFPAT_SET_TP_DST,   "SET_TP_DST"   },
265 	{ OFPAT_ENQUEUE,      "ENQUEUE"      },
266 	{ OFPAT_VENDOR,       "VENDOR"       },
267 	{ 0, NULL }
268 };
269 
270 /* bit-shifted, w/o vendor action */
271 static const struct tok ofpat_bm[] = {
272 	{ 1U <<OFPAT_OUTPUT,       "OUTPUT"       },
273 	{ 1U <<OFPAT_SET_VLAN_VID, "SET_VLAN_VID" },
274 	{ 1U <<OFPAT_SET_VLAN_PCP, "SET_VLAN_PCP" },
275 	{ 1U <<OFPAT_STRIP_VLAN,   "STRIP_VLAN"   },
276 	{ 1U <<OFPAT_SET_DL_SRC,   "SET_DL_SRC"   },
277 	{ 1U <<OFPAT_SET_DL_DST,   "SET_DL_DST"   },
278 	{ 1U <<OFPAT_SET_NW_SRC,   "SET_NW_SRC"   },
279 	{ 1U <<OFPAT_SET_NW_DST,   "SET_NW_DST"   },
280 	{ 1U <<OFPAT_SET_NW_TOS,   "SET_NW_TOS"   },
281 	{ 1U <<OFPAT_SET_TP_SRC,   "SET_TP_SRC"   },
282 	{ 1U <<OFPAT_SET_TP_DST,   "SET_TP_DST"   },
283 	{ 1U <<OFPAT_ENQUEUE,      "ENQUEUE"      },
284 	{ 0, NULL }
285 };
286 #define OFPAT_U (~(1U <<OFPAT_OUTPUT | 1U <<OFPAT_SET_VLAN_VID | \
287                    1U <<OFPAT_SET_VLAN_PCP | 1U <<OFPAT_STRIP_VLAN | \
288                    1U <<OFPAT_SET_DL_SRC | 1U <<OFPAT_SET_DL_DST | \
289                    1U <<OFPAT_SET_NW_SRC | 1U <<OFPAT_SET_NW_DST | \
290                    1U <<OFPAT_SET_NW_TOS | 1U <<OFPAT_SET_TP_SRC | \
291                    1U <<OFPAT_SET_TP_DST | 1U <<OFPAT_ENQUEUE))
292 
293 #define OFPC_FLOW_STATS   (1U <<0)
294 #define OFPC_TABLE_STATS  (1U <<1)
295 #define OFPC_PORT_STATS   (1U <<2)
296 #define OFPC_STP          (1U <<3)
297 #define OFPC_RESERVED     (1U <<4)
298 #define OFPC_IP_REASM     (1U <<5)
299 #define OFPC_QUEUE_STATS  (1U <<6)
300 #define OFPC_ARP_MATCH_IP (1U <<7)
301 static const struct tok ofp_capabilities_bm[] = {
302 	{ OFPC_FLOW_STATS,   "FLOW_STATS"   },
303 	{ OFPC_TABLE_STATS,  "TABLE_STATS"  },
304 	{ OFPC_PORT_STATS,   "PORT_STATS"   },
305 	{ OFPC_STP,          "STP"          },
306 	{ OFPC_RESERVED,     "RESERVED"     }, /* not in the mask below */
307 	{ OFPC_IP_REASM,     "IP_REASM"     },
308 	{ OFPC_QUEUE_STATS,  "QUEUE_STATS"  },
309 	{ OFPC_ARP_MATCH_IP, "ARP_MATCH_IP" },
310 	{ 0, NULL }
311 };
312 #define OFPCAP_U (~(OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
313                     OFPC_STP | OFPC_IP_REASM | OFPC_QUEUE_STATS | \
314                     OFPC_ARP_MATCH_IP))
315 
316 #define OFPC_FRAG_NORMAL 0x0000U
317 #define OFPC_FRAG_DROP   0x0001U
318 #define OFPC_FRAG_REASM  0x0002U
319 static const struct tok ofp_config_str[] = {
320 	{ OFPC_FRAG_NORMAL, "FRAG_NORMAL" },
321 	{ OFPC_FRAG_DROP,   "FRAG_DROP"   },
322 	{ OFPC_FRAG_REASM,  "FRAG_REASM"  },
323 	{ 0, NULL }
324 };
325 
326 #define OFPFC_ADD           0x0000U
327 #define OFPFC_MODIFY        0x0001U
328 #define OFPFC_MODIFY_STRICT 0x0002U
329 #define OFPFC_DELETE        0x0003U
330 #define OFPFC_DELETE_STRICT 0x0004U
331 static const struct tok ofpfc_str[] = {
332 	{ OFPFC_ADD,           "ADD"           },
333 	{ OFPFC_MODIFY,        "MODIFY"        },
334 	{ OFPFC_MODIFY_STRICT, "MODIFY_STRICT" },
335 	{ OFPFC_DELETE,        "DELETE"        },
336 	{ OFPFC_DELETE_STRICT, "DELETE_STRICT" },
337 	{ 0, NULL }
338 };
339 
340 static const struct tok bufferid_str[] = {
341 	{ 0xffffffff, "NONE" },
342 	{ 0, NULL }
343 };
344 
345 #define OFPFF_SEND_FLOW_REM (1U <<0)
346 #define OFPFF_CHECK_OVERLAP (1U <<1)
347 #define OFPFF_EMERG         (1U <<2)
348 static const struct tok ofpff_bm[] = {
349 	{ OFPFF_SEND_FLOW_REM, "SEND_FLOW_REM" },
350 	{ OFPFF_CHECK_OVERLAP, "CHECK_OVERLAP" },
351 	{ OFPFF_EMERG,         "EMERG"         },
352 	{ 0, NULL }
353 };
354 #define OFPFF_U (~(OFPFF_SEND_FLOW_REM | OFPFF_CHECK_OVERLAP | OFPFF_EMERG))
355 
356 #define OFPST_DESC      0x0000U
357 #define OFPST_FLOW      0x0001U
358 #define OFPST_AGGREGATE 0x0002U
359 #define OFPST_TABLE     0x0003U
360 #define OFPST_PORT      0x0004U
361 #define OFPST_QUEUE     0x0005U
362 #define OFPST_VENDOR    0xffffU
363 static const struct tok ofpst_str[] = {
364 	{ OFPST_DESC,      "DESC"      },
365 	{ OFPST_FLOW,      "FLOW"      },
366 	{ OFPST_AGGREGATE, "AGGREGATE" },
367 	{ OFPST_TABLE,     "TABLE"     },
368 	{ OFPST_PORT,      "PORT"      },
369 	{ OFPST_QUEUE,     "QUEUE"     },
370 	{ OFPST_VENDOR,    "VENDOR"    },
371 	{ 0, NULL }
372 };
373 
374 static const struct tok tableid_str[] = {
375 	{ 0xfeU, "EMERG" },
376 	{ 0xffU, "ALL"   },
377 	{ 0, NULL }
378 };
379 
380 #define OFPQ_ALL      0xffffffffU
381 static const struct tok ofpq_str[] = {
382 	{ OFPQ_ALL, "ALL" },
383 	{ 0, NULL }
384 };
385 
386 #define OFPSF_REPLY_MORE 0x0001U
387 static const struct tok ofpsf_reply_bm[] = {
388 	{ OFPSF_REPLY_MORE, "MORE" },
389 	{ 0, NULL }
390 };
391 #define OFPSF_REPLY_U (~(OFPSF_REPLY_MORE))
392 
393 #define OFPR_NO_MATCH 0x00U
394 #define OFPR_ACTION   0x01U
395 static const struct tok ofpr_str[] = {
396 	{ OFPR_NO_MATCH, "NO_MATCH" },
397 	{ OFPR_ACTION,   "ACTION"   },
398 	{ 0, NULL }
399 };
400 
401 #define OFPRR_IDLE_TIMEOUT 0x00U
402 #define OFPRR_HARD_TIMEOUT 0x01U
403 #define OFPRR_DELETE       0x02U
404 static const struct tok ofprr_str[] = {
405 	{ OFPRR_IDLE_TIMEOUT, "IDLE_TIMEOUT" },
406 	{ OFPRR_HARD_TIMEOUT, "HARD_TIMEOUT" },
407 	{ OFPRR_DELETE,       "DELETE"       },
408 	{ 0, NULL }
409 };
410 
411 #define OFPPR_ADD    0x00U
412 #define OFPPR_DELETE 0x01U
413 #define OFPPR_MODIFY 0x02U
414 static const struct tok ofppr_str[] = {
415 	{ OFPPR_ADD,    "ADD"    },
416 	{ OFPPR_DELETE, "DELETE" },
417 	{ OFPPR_MODIFY, "MODIFY" },
418 	{ 0, NULL }
419 };
420 
421 #define OFPET_HELLO_FAILED    0x0000U
422 #define OFPET_BAD_REQUEST     0x0001U
423 #define OFPET_BAD_ACTION      0x0002U
424 #define OFPET_FLOW_MOD_FAILED 0x0003U
425 #define OFPET_PORT_MOD_FAILED 0x0004U
426 #define OFPET_QUEUE_OP_FAILED 0x0005U
427 static const struct tok ofpet_str[] = {
428 	{ OFPET_HELLO_FAILED,    "HELLO_FAILED"    },
429 	{ OFPET_BAD_REQUEST,     "BAD_REQUEST"     },
430 	{ OFPET_BAD_ACTION,      "BAD_ACTION"      },
431 	{ OFPET_FLOW_MOD_FAILED, "FLOW_MOD_FAILED" },
432 	{ OFPET_PORT_MOD_FAILED, "PORT_MOD_FAILED" },
433 	{ OFPET_QUEUE_OP_FAILED, "QUEUE_OP_FAILED" },
434 	{ 0, NULL }
435 };
436 
437 #define OFPHFC_INCOMPATIBLE 0x0000U
438 #define OFPHFC_EPERM        0x0001U
439 static const struct tok ofphfc_str[] = {
440 	{ OFPHFC_INCOMPATIBLE, "INCOMPATIBLE" },
441 	{ OFPHFC_EPERM,        "EPERM"        },
442 	{ 0, NULL }
443 };
444 
445 #define OFPBRC_BAD_VERSION    0x0000U
446 #define OFPBRC_BAD_TYPE       0x0001U
447 #define OFPBRC_BAD_STAT       0x0002U
448 #define OFPBRC_BAD_VENDOR     0x0003U
449 #define OFPBRC_BAD_SUBTYPE    0x0004U
450 #define OFPBRC_EPERM          0x0005U
451 #define OFPBRC_BAD_LEN        0x0006U
452 #define OFPBRC_BUFFER_EMPTY   0x0007U
453 #define OFPBRC_BUFFER_UNKNOWN 0x0008U
454 static const struct tok ofpbrc_str[] = {
455 	{ OFPBRC_BAD_VERSION,    "BAD_VERSION"    },
456 	{ OFPBRC_BAD_TYPE,       "BAD_TYPE"       },
457 	{ OFPBRC_BAD_STAT,       "BAD_STAT"       },
458 	{ OFPBRC_BAD_VENDOR,     "BAD_VENDOR"     },
459 	{ OFPBRC_BAD_SUBTYPE,    "BAD_SUBTYPE"    },
460 	{ OFPBRC_EPERM,          "EPERM"          },
461 	{ OFPBRC_BAD_LEN,        "BAD_LEN"        },
462 	{ OFPBRC_BUFFER_EMPTY,   "BUFFER_EMPTY"   },
463 	{ OFPBRC_BUFFER_UNKNOWN, "BUFFER_UNKNOWN" },
464 	{ 0, NULL }
465 };
466 
467 #define OFPBAC_BAD_TYPE        0x0000U
468 #define OFPBAC_BAD_LEN         0x0001U
469 #define OFPBAC_BAD_VENDOR      0x0002U
470 #define OFPBAC_BAD_VENDOR_TYPE 0x0003U
471 #define OFPBAC_BAD_OUT_PORT    0x0004U
472 #define OFPBAC_BAD_ARGUMENT    0x0005U
473 #define OFPBAC_EPERM           0x0006U
474 #define OFPBAC_TOO_MANY        0x0007U
475 #define OFPBAC_BAD_QUEUE       0x0008U
476 static const struct tok ofpbac_str[] = {
477 	{ OFPBAC_BAD_TYPE,        "BAD_TYPE"        },
478 	{ OFPBAC_BAD_LEN,         "BAD_LEN"         },
479 	{ OFPBAC_BAD_VENDOR,      "BAD_VENDOR"      },
480 	{ OFPBAC_BAD_VENDOR_TYPE, "BAD_VENDOR_TYPE" },
481 	{ OFPBAC_BAD_OUT_PORT,    "BAD_OUT_PORT"    },
482 	{ OFPBAC_BAD_ARGUMENT,    "BAD_ARGUMENT"    },
483 	{ OFPBAC_EPERM,           "EPERM"           },
484 	{ OFPBAC_TOO_MANY,        "TOO_MANY"        },
485 	{ OFPBAC_BAD_QUEUE,       "BAD_QUEUE"       },
486 	{ 0, NULL }
487 };
488 
489 #define OFPFMFC_ALL_TABLES_FULL   0x0000U
490 #define OFPFMFC_OVERLAP           0x0001U
491 #define OFPFMFC_EPERM             0x0002U
492 #define OFPFMFC_BAD_EMERG_TIMEOUT 0x0003U
493 #define OFPFMFC_BAD_COMMAND       0x0004U
494 #define OFPFMFC_UNSUPPORTED       0x0005U
495 static const struct tok ofpfmfc_str[] = {
496 	{ OFPFMFC_ALL_TABLES_FULL,   "ALL_TABLES_FULL"   },
497 	{ OFPFMFC_OVERLAP,           "OVERLAP"           },
498 	{ OFPFMFC_EPERM,             "EPERM"             },
499 	{ OFPFMFC_BAD_EMERG_TIMEOUT, "BAD_EMERG_TIMEOUT" },
500 	{ OFPFMFC_BAD_COMMAND,       "BAD_COMMAND"       },
501 	{ OFPFMFC_UNSUPPORTED,       "UNSUPPORTED"       },
502 	{ 0, NULL }
503 };
504 
505 #define OFPPMFC_BAD_PORT    0x0000U
506 #define OFPPMFC_BAD_HW_ADDR 0x0001U
507 static const struct tok ofppmfc_str[] = {
508 	{ OFPPMFC_BAD_PORT,    "BAD_PORT"    },
509 	{ OFPPMFC_BAD_HW_ADDR, "BAD_HW_ADDR" },
510 	{ 0, NULL }
511 };
512 
513 #define OFPQOFC_BAD_PORT  0x0000U
514 #define OFPQOFC_BAD_QUEUE 0x0001U
515 #define OFPQOFC_EPERM     0x0002U
516 static const struct tok ofpqofc_str[] = {
517 	{ OFPQOFC_BAD_PORT,  "BAD_PORT"  },
518 	{ OFPQOFC_BAD_QUEUE, "BAD_QUEUE" },
519 	{ OFPQOFC_EPERM,     "EPERM"     },
520 	{ 0, NULL }
521 };
522 
523 static const struct uint_tokary of10_ofpet2tokary[] = {
524 	{ OFPET_HELLO_FAILED,    ofphfc_str  },
525 	{ OFPET_BAD_REQUEST,     ofpbrc_str  },
526 	{ OFPET_BAD_ACTION,      ofpbac_str  },
527 	{ OFPET_FLOW_MOD_FAILED, ofpfmfc_str },
528 	{ OFPET_PORT_MOD_FAILED, ofppmfc_str },
529 	{ OFPET_QUEUE_OP_FAILED, ofpqofc_str },
530 	/* uint2tokary() does not use array termination. */
531 };
532 
533 /* lengths (fixed or minimal) of particular message types, where not 0 */
534 #define OF_SWITCH_CONFIG_FIXLEN            (12U - OF_HEADER_FIXLEN)
535 #define OF_FEATURES_REPLY_MINLEN           (32U - OF_HEADER_FIXLEN)
536 #define OF_PORT_STATUS_FIXLEN              (64U - OF_HEADER_FIXLEN)
537 #define OF_PORT_MOD_FIXLEN                 (32U - OF_HEADER_FIXLEN)
538 #define OF_PACKET_IN_MINLEN                (20U - OF_HEADER_FIXLEN) /* with 2 mock octets */
539 #define OF_PACKET_OUT_MINLEN               (16U - OF_HEADER_FIXLEN)
540 #define OF_FLOW_MOD_MINLEN                 (72U - OF_HEADER_FIXLEN)
541 #define OF_FLOW_REMOVED_FIXLEN             (88U - OF_HEADER_FIXLEN)
542 #define OF_ERROR_MSG_MINLEN                (12U - OF_HEADER_FIXLEN)
543 #define OF_STATS_REQUEST_MINLEN            (12U - OF_HEADER_FIXLEN)
544 #define OF_STATS_REPLY_MINLEN              (12U - OF_HEADER_FIXLEN)
545 #define OF_VENDOR_MINLEN                   (12U - OF_HEADER_FIXLEN)
546 #define OF_QUEUE_GET_CONFIG_REQUEST_FIXLEN (12U - OF_HEADER_FIXLEN)
547 #define OF_QUEUE_GET_CONFIG_REPLY_MINLEN   (16U - OF_HEADER_FIXLEN)
548 
549 /* lengths (fixed or minimal) of particular protocol structures */
550 #define OF_PHY_PORT_FIXLEN                    48
551 #define OF_ACTION_MINLEN                       8
552 #define OF_MATCH_FIXLEN                       40
553 #define OF_DESC_STATS_REPLY_FIXLEN          1056
554 #define OF_FLOW_STATS_REQUEST_FIXLEN          44
555 #define OF_FLOW_STATS_REPLY_MINLEN            88
556 #define OF_AGGREGATE_STATS_REPLY_FIXLEN       24
557 #define OF_TABLE_STATS_REPLY_FIXLEN           64
558 #define OF_PORT_STATS_REQUEST_FIXLEN           8
559 #define OF_PORT_STATS_REPLY_FIXLEN           104
560 #define OF_QUEUE_PROP_MINLEN                   8
561 #define OF_QUEUE_PROP_MIN_RATE_FIXLEN         16
562 #define OF_PACKET_QUEUE_MINLEN                 8
563 #define OF_QUEUE_STATS_REQUEST_FIXLEN          8
564 #define OF_QUEUE_STATS_REPLY_FIXLEN           32
565 
566 /* miscellaneous constants from [OF10] */
567 #define OFP_MAX_TABLE_NAME_LEN     32
568 #define OFP_MAX_PORT_NAME_LEN      16
569 #define DESC_STR_LEN              256
570 #define SERIAL_NUM_LEN             32
571 #define OFP_VLAN_NONE          0xffffU
572 
573 /* vendor extensions */
574 #define BSN_SET_IP_MASK                    0
575 #define BSN_GET_IP_MASK_REQUEST            1
576 #define BSN_GET_IP_MASK_REPLY              2
577 #define BSN_SET_MIRRORING                  3
578 #define BSN_GET_MIRRORING_REQUEST          4
579 #define BSN_GET_MIRRORING_REPLY            5
580 #define BSN_SHELL_COMMAND                  6
581 #define BSN_SHELL_OUTPUT                   7
582 #define BSN_SHELL_STATUS                   8
583 #define BSN_GET_INTERFACES_REQUEST         9
584 #define BSN_GET_INTERFACES_REPLY          10
585 #define BSN_SET_PKTIN_SUPPRESSION_REQUEST 11
586 #define BSN_SET_L2_TABLE_REQUEST          12
587 #define BSN_GET_L2_TABLE_REQUEST          13
588 #define BSN_GET_L2_TABLE_REPLY            14
589 #define BSN_VIRTUAL_PORT_CREATE_REQUEST   15
590 #define BSN_VIRTUAL_PORT_CREATE_REPLY     16
591 #define BSN_VIRTUAL_PORT_REMOVE_REQUEST   17
592 #define BSN_BW_ENABLE_SET_REQUEST         18
593 #define BSN_BW_ENABLE_GET_REQUEST         19
594 #define BSN_BW_ENABLE_GET_REPLY           20
595 #define BSN_BW_CLEAR_DATA_REQUEST         21
596 #define BSN_BW_CLEAR_DATA_REPLY           22
597 #define BSN_BW_ENABLE_SET_REPLY           23
598 #define BSN_SET_L2_TABLE_REPLY            24
599 #define BSN_SET_PKTIN_SUPPRESSION_REPLY   25
600 #define BSN_VIRTUAL_PORT_REMOVE_REPLY     26
601 #define BSN_HYBRID_GET_REQUEST            27
602 #define BSN_HYBRID_GET_REPLY              28
603                                        /* 29 */
604                                        /* 30 */
605 #define BSN_PDU_TX_REQUEST                31
606 #define BSN_PDU_TX_REPLY                  32
607 #define BSN_PDU_RX_REQUEST                33
608 #define BSN_PDU_RX_REPLY                  34
609 #define BSN_PDU_RX_TIMEOUT                35
610 
611 static const struct tok bsn_subtype_str[] = {
612 	{ BSN_SET_IP_MASK,                   "SET_IP_MASK"                   },
613 	{ BSN_GET_IP_MASK_REQUEST,           "GET_IP_MASK_REQUEST"           },
614 	{ BSN_GET_IP_MASK_REPLY,             "GET_IP_MASK_REPLY"             },
615 	{ BSN_SET_MIRRORING,                 "SET_MIRRORING"                 },
616 	{ BSN_GET_MIRRORING_REQUEST,         "GET_MIRRORING_REQUEST"         },
617 	{ BSN_GET_MIRRORING_REPLY,           "GET_MIRRORING_REPLY"           },
618 	{ BSN_SHELL_COMMAND,                 "SHELL_COMMAND"                 },
619 	{ BSN_SHELL_OUTPUT,                  "SHELL_OUTPUT"                  },
620 	{ BSN_SHELL_STATUS,                  "SHELL_STATUS"                  },
621 	{ BSN_GET_INTERFACES_REQUEST,        "GET_INTERFACES_REQUEST"        },
622 	{ BSN_GET_INTERFACES_REPLY,          "GET_INTERFACES_REPLY"          },
623 	{ BSN_SET_PKTIN_SUPPRESSION_REQUEST, "SET_PKTIN_SUPPRESSION_REQUEST" },
624 	{ BSN_SET_L2_TABLE_REQUEST,          "SET_L2_TABLE_REQUEST"          },
625 	{ BSN_GET_L2_TABLE_REQUEST,          "GET_L2_TABLE_REQUEST"          },
626 	{ BSN_GET_L2_TABLE_REPLY,            "GET_L2_TABLE_REPLY"            },
627 	{ BSN_VIRTUAL_PORT_CREATE_REQUEST,   "VIRTUAL_PORT_CREATE_REQUEST"   },
628 	{ BSN_VIRTUAL_PORT_CREATE_REPLY,     "VIRTUAL_PORT_CREATE_REPLY"     },
629 	{ BSN_VIRTUAL_PORT_REMOVE_REQUEST,   "VIRTUAL_PORT_REMOVE_REQUEST"   },
630 	{ BSN_BW_ENABLE_SET_REQUEST,         "BW_ENABLE_SET_REQUEST"         },
631 	{ BSN_BW_ENABLE_GET_REQUEST,         "BW_ENABLE_GET_REQUEST"         },
632 	{ BSN_BW_ENABLE_GET_REPLY,           "BW_ENABLE_GET_REPLY"           },
633 	{ BSN_BW_CLEAR_DATA_REQUEST,         "BW_CLEAR_DATA_REQUEST"         },
634 	{ BSN_BW_CLEAR_DATA_REPLY,           "BW_CLEAR_DATA_REPLY"           },
635 	{ BSN_BW_ENABLE_SET_REPLY,           "BW_ENABLE_SET_REPLY"           },
636 	{ BSN_SET_L2_TABLE_REPLY,            "SET_L2_TABLE_REPLY"            },
637 	{ BSN_SET_PKTIN_SUPPRESSION_REPLY,   "SET_PKTIN_SUPPRESSION_REPLY"   },
638 	{ BSN_VIRTUAL_PORT_REMOVE_REPLY,     "VIRTUAL_PORT_REMOVE_REPLY"     },
639 	{ BSN_HYBRID_GET_REQUEST,            "HYBRID_GET_REQUEST"            },
640 	{ BSN_HYBRID_GET_REPLY,              "HYBRID_GET_REPLY"              },
641 	{ BSN_PDU_TX_REQUEST,                "PDU_TX_REQUEST"                },
642 	{ BSN_PDU_TX_REPLY,                  "PDU_TX_REPLY"                  },
643 	{ BSN_PDU_RX_REQUEST,                "PDU_RX_REQUEST"                },
644 	{ BSN_PDU_RX_REPLY,                  "PDU_RX_REPLY"                  },
645 	{ BSN_PDU_RX_TIMEOUT,                "PDU_RX_TIMEOUT"                },
646 	{ 0, NULL }
647 };
648 
649 #define BSN_ACTION_MIRROR                  1
650 #define BSN_ACTION_SET_TUNNEL_DST          2
651                                         /* 3 */
652 #define BSN_ACTION_CHECKSUM                4
653 
654 static const struct tok bsn_action_subtype_str[] = {
655 	{ BSN_ACTION_MIRROR,                 "MIRROR"                        },
656 	{ BSN_ACTION_SET_TUNNEL_DST,         "SET_TUNNEL_DST"                },
657 	{ BSN_ACTION_CHECKSUM,               "CHECKSUM"                      },
658 	{ 0, NULL }
659 };
660 
661 static const struct tok bsn_mirror_copy_stage_str[] = {
662 	{ 0, "INGRESS" },
663 	{ 1, "EGRESS"  },
664 	{ 0, NULL },
665 };
666 
667 static const struct tok bsn_onoff_str[] = {
668 	{ 0, "OFF" },
669 	{ 1, "ON"  },
670 	{ 0, NULL },
671 };
672 
673 static const char *
vlan_str(const uint16_t vid)674 vlan_str(const uint16_t vid)
675 {
676 	static char buf[sizeof("65535 (bogus)")];
677 
678 	if (vid == OFP_VLAN_NONE)
679 		return "NONE";
680 	snprintf(buf, sizeof(buf), "%u%s", vid,
681 	         (vid > 0 && vid < 0x0fff) ? "" : " (bogus)");
682 	return buf;
683 }
684 
685 static const char *
pcp_str(const uint8_t pcp)686 pcp_str(const uint8_t pcp)
687 {
688 	static char buf[sizeof("255 (bogus)")];
689 	snprintf(buf, sizeof(buf), "%u%s", pcp,
690 	         pcp <= 7 ? "" : " (bogus)");
691 	return buf;
692 }
693 
694 static void
of10_bsn_message_print(netdissect_options * ndo,const u_char * cp,u_int len)695 of10_bsn_message_print(netdissect_options *ndo,
696                        const u_char *cp, u_int len)
697 {
698 	uint32_t subtype;
699 
700 	ND_PRINT("\n\t");
701 	ND_ICHECK_U(len, <, 4);
702 	/* subtype */
703 	subtype = GET_BE_U_4(cp);
704 	OF_FWD(4);
705 	ND_PRINT(" subtype %s", tok2str(bsn_subtype_str, "unknown (0x%08x)", subtype));
706 	switch (subtype) {
707 	case BSN_GET_IP_MASK_REQUEST:
708 		/*
709 		 *  0                   1                   2                   3
710 		 *  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
711 		 * +---------------+---------------+---------------+---------------+
712 		 * |                            subtype                            |
713 		 * +---------------+---------------+---------------+---------------+
714 		 * |     index     |                      pad                      |
715 		 * +---------------+---------------+---------------+---------------+
716 		 * |                              pad                              |
717 		 * +---------------+---------------+---------------+---------------+
718 		 *
719 		 */
720 		ND_ICHECK_U(len, !=, 8);
721 		/* index */
722 		ND_PRINT(", index %u", GET_U_1(cp));
723 		OF_FWD(1);
724 		/* pad */
725 		/* Always the last field, check bounds. */
726 		ND_TCHECK_7(cp);
727 		break;
728 	case BSN_SET_IP_MASK:
729 	case BSN_GET_IP_MASK_REPLY:
730 		/*
731 		 *  0                   1                   2                   3
732 		 *  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
733 		 * +---------------+---------------+---------------+---------------+
734 		 * |                            subtype                            |
735 		 * +---------------+---------------+---------------+---------------+
736 		 * |     index     |                      pad                      |
737 		 * +---------------+---------------+---------------+---------------+
738 		 * |                              mask                             |
739 		 * +---------------+---------------+---------------+---------------+
740 		 *
741 		 */
742 		ND_ICHECK_U(len, !=, 8);
743 		/* index */
744 		ND_PRINT(", index %u", GET_U_1(cp));
745 		OF_FWD(1);
746 		/* pad */
747 		OF_FWD(3);
748 		/* mask */
749 		ND_PRINT(", mask %s", GET_IPADDR_STRING(cp));
750 		break;
751 	case BSN_SET_MIRRORING:
752 	case BSN_GET_MIRRORING_REQUEST:
753 	case BSN_GET_MIRRORING_REPLY:
754 		/*
755 		 *  0                   1                   2                   3
756 		 *  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
757 		 * +---------------+---------------+---------------+---------------+
758 		 * |                            subtype                            |
759 		 * +---------------+---------------+---------------+---------------+
760 		 * | report m. p.  |                      pad                      |
761 		 * +---------------+---------------+---------------+---------------+
762 		 *
763 		 */
764 		ND_ICHECK_U(len, !=, 4);
765 		/* report_mirror_ports */
766 		ND_PRINT(", report_mirror_ports %s",
767 			 tok2str(bsn_onoff_str, "bogus (%u)", GET_U_1(cp)));
768 		OF_FWD(1);
769 		/* pad */
770 		/* Always the last field, check bounds. */
771 		ND_TCHECK_3(cp);
772 		break;
773 	case BSN_GET_INTERFACES_REQUEST:
774 	case BSN_GET_L2_TABLE_REQUEST:
775 	case BSN_BW_ENABLE_GET_REQUEST:
776 	case BSN_BW_CLEAR_DATA_REQUEST:
777 	case BSN_HYBRID_GET_REQUEST:
778 		/*
779 		 *  0                   1                   2                   3
780 		 *  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
781 		 * +---------------+---------------+---------------+---------------+
782 		 * |                            subtype                            |
783 		 * +---------------+---------------+---------------+---------------+
784 		 *
785 		 */
786 		ND_ICHECK_U(len, !=, 0);
787 		break;
788 	case BSN_VIRTUAL_PORT_REMOVE_REQUEST:
789 		/*
790 		 *  0                   1                   2                   3
791 		 *  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
792 		 * +---------------+---------------+---------------+---------------+
793 		 * |                            subtype                            |
794 		 * +---------------+---------------+---------------+---------------+
795 		 * |                           vport_no                            |
796 		 * +---------------+---------------+---------------+---------------+
797 		 *
798 		 */
799 		ND_ICHECK_U(len, !=, 4);
800 		/* vport_no */
801 		ND_PRINT(", vport_no %u", GET_BE_U_4(cp));
802 		break;
803 	case BSN_SHELL_COMMAND:
804 		/*
805 		 *  0                   1                   2                   3
806 		 *  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
807 		 * +---------------+---------------+---------------+---------------+
808 		 * |                            subtype                            |
809 		 * +---------------+---------------+---------------+---------------+
810 		 * |                            service                            |
811 		 * +---------------+---------------+---------------+---------------+
812 		 * |                             data ...
813 		 * +---------------+---------------+--------
814 		 *
815 		 */
816 		ND_ICHECK_U(len, <, 4);
817 		/* service */
818 		ND_PRINT(", service %u", GET_BE_U_4(cp));
819 		OF_FWD(4);
820 		/* data */
821 		ND_PRINT(", data '");
822 		(void)nd_printn(ndo, cp, len, NULL);
823 		ND_PRINT("'");
824 		break;
825 	case BSN_SHELL_OUTPUT:
826 		/*
827 		 *  0                   1                   2                   3
828 		 *  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
829 		 * +---------------+---------------+---------------+---------------+
830 		 * |                            subtype                            |
831 		 * +---------------+---------------+---------------+---------------+
832 		 * |                             data ...
833 		 * +---------------+---------------+--------
834 		 *
835 		 */
836 		/* already checked that len >= 4 */
837 		/* data */
838 		ND_PRINT(", data '");
839 		(void)nd_printn(ndo, cp, len, NULL);
840 		ND_PRINT("'");
841 		break;
842 	case BSN_SHELL_STATUS:
843 		/*
844 		 *  0                   1                   2                   3
845 		 *  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
846 		 * +---------------+---------------+---------------+---------------+
847 		 * |                            subtype                            |
848 		 * +---------------+---------------+---------------+---------------+
849 		 * |                            status                             |
850 		 * +---------------+---------------+---------------+---------------+
851 		 *
852 		 */
853 		ND_ICHECK_U(len, !=, 4);
854 		/* status */
855 		ND_PRINT(", status 0x%08x", GET_BE_U_4(cp));
856 		break;
857 	default:
858 		ND_TCHECK_LEN(cp, len);
859 	}
860 	return;
861 
862 invalid: /* skip the undersized data */
863 	nd_print_invalid(ndo);
864 	ND_TCHECK_LEN(cp, len);
865 }
866 
867 static void
of10_bsn_actions_print(netdissect_options * ndo,const u_char * cp,u_int len)868 of10_bsn_actions_print(netdissect_options *ndo,
869                        const u_char *cp, u_int len)
870 {
871 	uint32_t subtype, vlan_tag;
872 
873 	ND_PRINT("\n\t ");
874 	ND_ICHECK_U(len, <, 4);
875 	/* subtype */
876 	subtype = GET_BE_U_4(cp);
877 	OF_FWD(4);
878 	ND_PRINT(" subtype %s", tok2str(bsn_action_subtype_str, "unknown (0x%08x)", subtype));
879 	switch (subtype) {
880 	case BSN_ACTION_MIRROR:
881 		/*
882 		 *  0                   1                   2                   3
883 		 *  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
884 		 * +---------------+---------------+---------------+---------------+
885 		 * |                            subtype                            |
886 		 * +---------------+---------------+---------------+---------------+
887 		 * |                           dest_port                           |
888 		 * +---------------+---------------+---------------+---------------+
889 		 * |                           vlan_tag                            |
890 		 * +---------------+---------------+---------------+---------------+
891 		 * |  copy_stage   |                      pad                      |
892 		 * +---------------+---------------+---------------+---------------+
893 		 *
894 		 */
895 		ND_ICHECK_U(len, !=, 12);
896 		/* dest_port */
897 		ND_PRINT(", dest_port %u", GET_BE_U_4(cp));
898 		OF_FWD(4);
899 		/* vlan_tag */
900 		vlan_tag = GET_BE_U_4(cp);
901 		OF_FWD(4);
902 		switch (vlan_tag >> 16) {
903 		case 0:
904 			ND_PRINT(", vlan_tag none");
905 			break;
906 		case ETHERTYPE_8021Q:
907 			ND_PRINT(", vlan_tag 802.1Q (%s)", ieee8021q_tci_string(vlan_tag & 0xffff));
908 			break;
909 		default:
910 			ND_PRINT(", vlan_tag unknown (0x%04x)", vlan_tag >> 16);
911 		}
912 		/* copy_stage */
913 		ND_PRINT(", copy_stage %s",
914 			 tok2str(bsn_mirror_copy_stage_str, "unknown (%u)", GET_U_1(cp)));
915 		OF_FWD(1);
916 		/* pad */
917 		/* Always the last field, check bounds. */
918 		ND_TCHECK_3(cp);
919 		break;
920 	default:
921 		ND_TCHECK_LEN(cp, len);
922 	}
923 	return;
924 
925 invalid:
926 	nd_print_invalid(ndo);
927 	ND_TCHECK_LEN(cp, len);
928 }
929 
930 static void
of10_vendor_action_print(netdissect_options * ndo,const u_char * cp,u_int len)931 of10_vendor_action_print(netdissect_options *ndo,
932                          const u_char *cp, u_int len)
933 {
934 	uint32_t vendor;
935 	void (*decoder)(netdissect_options *, const u_char *, u_int);
936 
937 	ND_ICHECK_U(len, <, 4);
938 	/* vendor */
939 	vendor = GET_BE_U_4(cp);
940 	OF_FWD(4);
941 	ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
942 	/* data */
943 	decoder =
944 		vendor == OUI_BSN         ? of10_bsn_actions_print         :
945 		of_data_print;
946 	decoder(ndo, cp, len);
947 	return;
948 
949 invalid: /* skip the undersized data */
950 	nd_print_invalid(ndo);
951 	ND_TCHECK_LEN(cp, len);
952 }
953 
954 /* [OF10] Section 5.5.4 */
955 static void
of10_vendor_message_print(netdissect_options * ndo,const u_char * cp,u_int len)956 of10_vendor_message_print(netdissect_options *ndo,
957                           const u_char *cp, u_int len)
958 {
959 	uint32_t vendor;
960 	void (*decoder)(netdissect_options *, const u_char *, u_int);
961 
962 	/* vendor */
963 	vendor = GET_BE_U_4(cp);
964 	OF_FWD(4);
965 	ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
966 	/* data */
967 	decoder =
968 		vendor == OUI_BSN         ? of10_bsn_message_print         :
969 		of_data_print;
970 	decoder(ndo, cp, len);
971 }
972 
973 /* Vendor ID is mandatory, data is optional. */
974 static void
of10_vendor_data_print(netdissect_options * ndo,const u_char * cp,u_int len)975 of10_vendor_data_print(netdissect_options *ndo,
976                        const u_char *cp, u_int len)
977 {
978 	uint32_t vendor;
979 
980 	ND_ICHECK_U(len, <, 4);
981 	/* vendor */
982 	vendor = GET_BE_U_4(cp);
983 	OF_FWD(4);
984 	ND_PRINT(", vendor 0x%08x (%s)", vendor, of_vendor_name(vendor));
985 	/* data */
986 	of_data_print(ndo, cp, len);
987 	return;
988 
989 invalid: /* skip the undersized data */
990 	nd_print_invalid(ndo);
991 	ND_TCHECK_LEN(cp, len);
992 }
993 
994 static void
of10_packet_data_print(netdissect_options * ndo,const u_char * cp,const u_int len)995 of10_packet_data_print(netdissect_options *ndo,
996                        const u_char *cp, const u_int len)
997 {
998 	if (len == 0)
999 		return;
1000 	/* data */
1001 	ND_PRINT("\n\t data (%u octets)", len);
1002 	if (ndo->ndo_vflag < 3) {
1003 		ND_TCHECK_LEN(cp, len);
1004 		return;
1005 	}
1006 	ndo->ndo_vflag -= 3;
1007 	ND_PRINT(", frame decoding below\n");
1008 	/*
1009 	 * The encapsulated Ethernet frame is not necessarily the last
1010 	 * data of this packet (i.e. there may be more OpenFlow messages
1011 	 * after the current OFPT_PACKET_IN/OFPT_PACKET_OUT message, in
1012 	 * which case the current (outer) packet's snapshot end is not
1013 	 * what ether_print() needs to decode an Ethernet frame nested in
1014 	 * the middle of a TCP payload.
1015 	 */
1016 	const u_char *snapend_save = ndo->ndo_snapend;
1017 	ndo->ndo_snapend = ND_MIN(cp + len, ndo->ndo_snapend);
1018 	ether_print(ndo, cp, len, ND_BYTES_AVAILABLE_AFTER(cp), NULL, NULL);
1019 	ndo->ndo_snapend = snapend_save;
1020 	ndo->ndo_vflag += 3;
1021 }
1022 
1023 /* [OF10] Section 5.2.1 */
1024 static void
of10_phy_port_print(netdissect_options * ndo,const u_char * cp)1025 of10_phy_port_print(netdissect_options *ndo,
1026                     const u_char *cp)
1027 {
1028 	uint32_t state;
1029 
1030 	/* port_no */
1031 	ND_PRINT("\n\t  port_no %s",
1032 		 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1033 	cp += 2;
1034 	/* hw_addr */
1035 	ND_PRINT(", hw_addr %s", GET_ETHERADDR_STRING(cp));
1036 	cp += MAC_ADDR_LEN;
1037 	/* name */
1038 	ND_PRINT(", name '");
1039 	nd_printjnp(ndo, cp, OFP_MAX_PORT_NAME_LEN);
1040 	ND_PRINT("'");
1041 	cp += OFP_MAX_PORT_NAME_LEN;
1042 
1043 	if (ndo->ndo_vflag < 2) {
1044 		ND_TCHECK_LEN(cp, 24);
1045 		return;
1046 	}
1047 	/* config */
1048 	ND_PRINT("\n\t   config 0x%08x", GET_BE_U_4(cp));
1049 	of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
1050 	cp += 4;
1051 	/* state */
1052 	state = GET_BE_U_4(cp);
1053 	/*
1054 	 * Decode the code point and the single bit separately, but
1055 	 * format the result as a single sequence of comma-separated
1056 	 * strings (see the comments at the OFPPS_ props).
1057 	 */
1058 	ND_PRINT("\n\t   state 0x%08x (%s%s)%s", state,
1059 	         tok2str(ofpps_stp_str, "", state & OFPPS_STP_MASK),
1060 	         state & OFPPS_LINK_DOWN ? ", LINK_DOWN" : "",
1061 	         state & OFPPS_U ? " (bogus)" : "");
1062 	cp += 4;
1063 	/* curr */
1064 	ND_PRINT("\n\t   curr 0x%08x", GET_BE_U_4(cp));
1065 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1066 	cp += 4;
1067 	/* advertised */
1068 	ND_PRINT("\n\t   advertised 0x%08x", GET_BE_U_4(cp));
1069 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1070 	cp += 4;
1071 	/* supported */
1072 	ND_PRINT("\n\t   supported 0x%08x", GET_BE_U_4(cp));
1073 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1074 	cp += 4;
1075 	/* peer */
1076 	ND_PRINT("\n\t   peer 0x%08x", GET_BE_U_4(cp));
1077 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1078 }
1079 
1080 /* [OF10] Section 5.2.2 */
1081 static void
of10_queue_props_print(netdissect_options * ndo,const u_char * cp,u_int len)1082 of10_queue_props_print(netdissect_options *ndo,
1083                        const u_char *cp, u_int len)
1084 {
1085 	while (len) {
1086 		uint16_t property, plen;
1087 		u_char plen_bogus = 0, skip = 0;
1088 
1089 		ND_PRINT("\n\t  ");
1090 		ND_ICHECKMSG_U("remaining length", len, <, OF_QUEUE_PROP_MINLEN);
1091 		/* property */
1092 		property = GET_BE_U_2(cp);
1093 		OF_FWD(2);
1094 		ND_PRINT(" property %s", tok2str(ofpqt_str, "invalid (0x%04x)", property));
1095 		/* len */
1096 		plen = GET_BE_U_2(cp);
1097 		OF_FWD(2);
1098 		ND_PRINT(", len %u", plen);
1099 		ND_ICHECKMSG_U("property length", plen, <, OF_QUEUE_PROP_MINLEN);
1100 		ND_ICHECKMSG_U("property length", plen, >, len + 4);
1101 		/* pad */
1102 		/* Sometimes the last field, check bounds. */
1103 		OF_CHK_FWD(4);
1104 		/* property-specific constraints and decoding */
1105 		switch (property) {
1106 		case OFPQT_NONE:
1107 			plen_bogus = plen != OF_QUEUE_PROP_MINLEN;
1108 			break;
1109 		case OFPQT_MIN_RATE:
1110 			plen_bogus = plen != OF_QUEUE_PROP_MIN_RATE_FIXLEN;
1111 			break;
1112 		default:
1113 			skip = 1;
1114 		}
1115 		if (plen_bogus) {
1116 			ND_PRINT(" (bogus)");
1117 			skip = 1;
1118 		}
1119 		if (skip) {
1120 			/*
1121 			 * plen >= OF_QUEUE_PROP_MINLEN
1122 			 * cp is OF_QUEUE_PROP_MINLEN bytes in
1123 			 */
1124 			OF_CHK_FWD(plen - OF_QUEUE_PROP_MINLEN);
1125 			continue;
1126 		}
1127 		if (property == OFPQT_MIN_RATE) { /* the only case of property decoding */
1128 			/* rate */
1129 			uint16_t rate = GET_BE_U_2(cp);
1130 			OF_FWD(2);
1131 			if (rate > 1000)
1132 				ND_PRINT(", rate disabled");
1133 			else
1134 				ND_PRINT(", rate %u.%u%%", rate / 10, rate % 10);
1135 			/* pad */
1136 			/* Sometimes the last field, check bounds. */
1137 			OF_CHK_FWD(6);
1138 		}
1139 	} /* while */
1140 	return;
1141 
1142 invalid: /* skip the rest of queue properties */
1143 	nd_print_invalid(ndo);
1144 	ND_TCHECK_LEN(cp, len);
1145 }
1146 
1147 /* ibid */
1148 static void
of10_queues_print(netdissect_options * ndo,const u_char * cp,u_int len)1149 of10_queues_print(netdissect_options *ndo,
1150                   const u_char *cp, u_int len)
1151 {
1152 	while (len) {
1153 		uint16_t desclen;
1154 
1155 		ND_PRINT("\n\t ");
1156 		ND_ICHECKMSG_U("remaining length", len, <, OF_PACKET_QUEUE_MINLEN);
1157 		/* queue_id */
1158 		ND_PRINT(" queue_id %u", GET_BE_U_4(cp));
1159 		OF_FWD(4);
1160 		/* len */
1161 		desclen = GET_BE_U_2(cp);
1162 		OF_FWD(2);
1163 		ND_PRINT(", len %u", desclen);
1164 		ND_ICHECKMSG_U("prop. desc. length", desclen, <, OF_PACKET_QUEUE_MINLEN);
1165 		ND_ICHECKMSG_U("prop. desc. length", desclen, >, len + 6);
1166 		/* pad */
1167 		/* Sometimes the last field, check bounds. */
1168 		OF_CHK_FWD(2);
1169 		/* properties */
1170 		if (ndo->ndo_vflag >= 2)
1171 			of10_queue_props_print(ndo, cp, desclen - OF_PACKET_QUEUE_MINLEN);
1172 		else
1173 			ND_TCHECK_LEN(cp, desclen - OF_PACKET_QUEUE_MINLEN);
1174 		OF_FWD(desclen - OF_PACKET_QUEUE_MINLEN);
1175 	} /* while */
1176 	return;
1177 
1178 invalid: /* skip the rest of queues */
1179 	nd_print_invalid(ndo);
1180 	ND_TCHECK_LEN(cp, len);
1181 }
1182 
1183 /* [OF10] Section 5.2.3 */
1184 static void
of10_match_print(netdissect_options * ndo,const char * pfx,const u_char * cp)1185 of10_match_print(netdissect_options *ndo,
1186                  const char *pfx, const u_char *cp)
1187 {
1188 	uint32_t wildcards;
1189 	uint16_t dl_type;
1190 	uint8_t nw_proto;
1191 	u_int nw_bits;
1192 	const char *field_name;
1193 
1194 	/* wildcards */
1195 	wildcards = GET_BE_U_4(cp);
1196 	if (wildcards & OFPFW_U)
1197 		ND_PRINT("%swildcards 0x%08x (bogus)", pfx, wildcards);
1198 	cp += 4;
1199 	/* in_port */
1200 	if (! (wildcards & OFPFW_IN_PORT))
1201 		ND_PRINT("%smatch in_port %s", pfx,
1202 		         tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1203 	cp += 2;
1204 	/* dl_src */
1205 	if (! (wildcards & OFPFW_DL_SRC))
1206 		ND_PRINT("%smatch dl_src %s", pfx, GET_ETHERADDR_STRING(cp));
1207 	cp += MAC_ADDR_LEN;
1208 	/* dl_dst */
1209 	if (! (wildcards & OFPFW_DL_DST))
1210 		ND_PRINT("%smatch dl_dst %s", pfx, GET_ETHERADDR_STRING(cp));
1211 	cp += MAC_ADDR_LEN;
1212 	/* dl_vlan */
1213 	if (! (wildcards & OFPFW_DL_VLAN))
1214 		ND_PRINT("%smatch dl_vlan %s", pfx, vlan_str(GET_BE_U_2(cp)));
1215 	cp += 2;
1216 	/* dl_vlan_pcp */
1217 	if (! (wildcards & OFPFW_DL_VLAN_PCP))
1218 		ND_PRINT("%smatch dl_vlan_pcp %s", pfx, pcp_str(GET_U_1(cp)));
1219 	cp += 1;
1220 	/* pad1 */
1221 	cp += 1;
1222 	/* dl_type */
1223 	dl_type = GET_BE_U_2(cp);
1224 	cp += 2;
1225 	if (! (wildcards & OFPFW_DL_TYPE))
1226 		ND_PRINT("%smatch dl_type 0x%04x", pfx, dl_type);
1227 	/* nw_tos */
1228 	if (! (wildcards & OFPFW_NW_TOS))
1229 		ND_PRINT("%smatch nw_tos 0x%02x", pfx, GET_U_1(cp));
1230 	cp += 1;
1231 	/* nw_proto */
1232 	nw_proto = GET_U_1(cp);
1233 	cp += 1;
1234 	if (! (wildcards & OFPFW_NW_PROTO)) {
1235 		field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_ARP
1236 		  ? "arp_opcode" : "nw_proto";
1237 		ND_PRINT("%smatch %s %u", pfx, field_name, nw_proto);
1238 	}
1239 	/* pad2 */
1240 	cp += 2;
1241 	/* nw_src */
1242 	nw_bits = (wildcards & OFPFW_NW_SRC_MASK) >> OFPFW_NW_SRC_SHIFT;
1243 	if (nw_bits < 32)
1244 		ND_PRINT("%smatch nw_src %s/%u", pfx, GET_IPADDR_STRING(cp), 32 - nw_bits);
1245 	cp += 4;
1246 	/* nw_dst */
1247 	nw_bits = (wildcards & OFPFW_NW_DST_MASK) >> OFPFW_NW_DST_SHIFT;
1248 	if (nw_bits < 32)
1249 		ND_PRINT("%smatch nw_dst %s/%u", pfx, GET_IPADDR_STRING(cp), 32 - nw_bits);
1250 	cp += 4;
1251 	/* tp_src */
1252 	if (! (wildcards & OFPFW_TP_SRC)) {
1253 		field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
1254 		  && ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
1255 		  ? "icmp_type" : "tp_src";
1256 		ND_PRINT("%smatch %s %u", pfx, field_name, GET_BE_U_2(cp));
1257 	}
1258 	cp += 2;
1259 	/* tp_dst */
1260 	/* The last unconditional check was at nw_proto, so have an "else" here. */
1261 	if (! (wildcards & OFPFW_TP_DST)) {
1262 		field_name = ! (wildcards & OFPFW_DL_TYPE) && dl_type == ETHERTYPE_IP
1263 		  && ! (wildcards & OFPFW_NW_PROTO) && nw_proto == IPPROTO_ICMP
1264 		  ? "icmp_code" : "tp_dst";
1265 		ND_PRINT("%smatch %s %u", pfx, field_name, GET_BE_U_2(cp));
1266 	} else
1267 		ND_TCHECK_2(cp);
1268 }
1269 
1270 /* [OF10] Section 5.2.4 */
1271 static void
of10_actions_print(netdissect_options * ndo,const char * pfx,const u_char * cp,u_int len)1272 of10_actions_print(netdissect_options *ndo,
1273                    const char *pfx, const u_char *cp, u_int len)
1274 {
1275 	while (len) {
1276 		uint16_t type, alen, output_port;
1277 		u_char alen_bogus = 0, skip = 0;
1278 
1279 		ND_PRINT("%saction", pfx);
1280 		ND_ICHECKMSG_U("remaining length", len, <, OF_ACTION_MINLEN);
1281 		/* type */
1282 		type = GET_BE_U_2(cp);
1283 		OF_FWD(2);
1284 		ND_PRINT(" type %s", tok2str(ofpat_str, "invalid (0x%04x)", type));
1285 		/* length */
1286 		alen = GET_BE_U_2(cp);
1287 		OF_FWD(2);
1288 		ND_PRINT(", len %u", alen);
1289 		/*
1290 		 * The 4-byte "pad" in the specification is not a field of the
1291 		 * action header, but a placeholder to illustrate the 64-bit
1292 		 * alignment requirement. Action type specific case blocks
1293 		 * below fetch these 4 bytes.
1294 		 */
1295 
1296 		/* On action size underrun/overrun skip the rest of the action list. */
1297 		ND_ICHECK_U(alen, <, OF_ACTION_MINLEN);
1298 		ND_ICHECK_U(alen, >, len + 4);
1299 		/*
1300 		 * After validating the basic length constraint it will be safe
1301 		 * to skip the current action if the action size is not valid
1302 		 * for the type or the type is invalid.
1303 		 */
1304 		switch (type) {
1305 		case OFPAT_OUTPUT:
1306 		case OFPAT_SET_VLAN_VID:
1307 		case OFPAT_SET_VLAN_PCP:
1308 		case OFPAT_STRIP_VLAN:
1309 		case OFPAT_SET_NW_SRC:
1310 		case OFPAT_SET_NW_DST:
1311 		case OFPAT_SET_NW_TOS:
1312 		case OFPAT_SET_TP_SRC:
1313 		case OFPAT_SET_TP_DST:
1314 			alen_bogus = alen != 8;
1315 			break;
1316 		case OFPAT_SET_DL_SRC:
1317 		case OFPAT_SET_DL_DST:
1318 		case OFPAT_ENQUEUE:
1319 			alen_bogus = alen != 16;
1320 			break;
1321 		case OFPAT_VENDOR:
1322 			alen_bogus = alen % 8 != 0; /* already >= 8 so far */
1323 			break;
1324 		default:
1325 			skip = 1;
1326 		}
1327 		if (alen_bogus) {
1328 			ND_PRINT(" (bogus)");
1329 			skip = 1;
1330 		}
1331 		if (skip) {
1332 			/*
1333 			 * alen >= OF_ACTION_MINLEN
1334 			 * cp is 4 bytes in
1335 			 */
1336 			OF_CHK_FWD(alen - 4);
1337 			continue;
1338 		}
1339 		/* OK to decode the rest of the action structure */
1340 		switch (type) {
1341 		case OFPAT_OUTPUT:
1342 			/* port */
1343 			output_port = GET_BE_U_2(cp);
1344 			OF_FWD(2);
1345 			ND_PRINT(", port %s", tok2str(ofpp_str, "%u", output_port));
1346 			/* max_len */
1347 			if (output_port == OFPP_CONTROLLER)
1348 				ND_PRINT(", max_len %u", GET_BE_U_2(cp));
1349 			else
1350 				ND_TCHECK_2(cp);
1351 			OF_FWD(2);
1352 			break;
1353 		case OFPAT_SET_VLAN_VID:
1354 			/* vlan_vid */
1355 			ND_PRINT(", vlan_vid %s", vlan_str(GET_BE_U_2(cp)));
1356 			OF_FWD(2);
1357 			/* pad */
1358 			/* Sometimes the last field, check bounds. */
1359 			OF_CHK_FWD(2);
1360 			break;
1361 		case OFPAT_SET_VLAN_PCP:
1362 			/* vlan_pcp */
1363 			ND_PRINT(", vlan_pcp %s", pcp_str(GET_U_1(cp)));
1364 			OF_FWD(1);
1365 			/* pad */
1366 			/* Sometimes the last field, check bounds. */
1367 			OF_CHK_FWD(3);
1368 			break;
1369 		case OFPAT_SET_DL_SRC:
1370 		case OFPAT_SET_DL_DST:
1371 			/* dl_addr */
1372 			ND_PRINT(", dl_addr %s", GET_ETHERADDR_STRING(cp));
1373 			OF_FWD(MAC_ADDR_LEN);
1374 			/* pad */
1375 			/* Sometimes the last field, check bounds. */
1376 			OF_CHK_FWD(6);
1377 			break;
1378 		case OFPAT_SET_NW_SRC:
1379 		case OFPAT_SET_NW_DST:
1380 			/* nw_addr */
1381 			ND_PRINT(", nw_addr %s", GET_IPADDR_STRING(cp));
1382 			OF_FWD(4);
1383 			break;
1384 		case OFPAT_SET_NW_TOS:
1385 			/* nw_tos */
1386 			ND_PRINT(", nw_tos 0x%02x", GET_U_1(cp));
1387 			OF_FWD(1);
1388 			/* pad */
1389 			/* Sometimes the last field, check bounds. */
1390 			OF_CHK_FWD(3);
1391 			break;
1392 		case OFPAT_SET_TP_SRC:
1393 		case OFPAT_SET_TP_DST:
1394 			/* nw_tos */
1395 			ND_PRINT(", tp_port %u", GET_BE_U_2(cp));
1396 			OF_FWD(2);
1397 			/* pad */
1398 			/* Sometimes the last field, check bounds. */
1399 			OF_CHK_FWD(2);
1400 			break;
1401 		case OFPAT_ENQUEUE:
1402 			/* port */
1403 			ND_PRINT(", port %s",
1404 				 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1405 			OF_FWD(2);
1406 			/* pad */
1407 			OF_FWD(6);
1408 			/* queue_id */
1409 			ND_PRINT(", queue_id %s",
1410 				 tok2str(ofpq_str, "%u", GET_BE_U_4(cp)));
1411 			OF_FWD(4);
1412 			break;
1413 		case OFPAT_VENDOR:
1414 			of10_vendor_action_print(ndo, cp, alen - 4);
1415 			OF_FWD(alen - 4);
1416 			break;
1417 		case OFPAT_STRIP_VLAN:
1418 			/* pad */
1419 			/* Sometimes the last field, check bounds. */
1420 			OF_CHK_FWD(4);
1421 			break;
1422 		} /* switch */
1423 	} /* while */
1424 	return;
1425 
1426 invalid: /* skip the rest of actions */
1427 	nd_print_invalid(ndo);
1428 	ND_TCHECK_LEN(cp, len);
1429 }
1430 
1431 /* [OF10] Section 5.3.1 */
1432 static void
of10_features_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1433 of10_features_reply_print(netdissect_options *ndo,
1434                           const u_char *cp, u_int len)
1435 {
1436 	/* datapath_id */
1437 	ND_PRINT("\n\t dpid 0x%016" PRIx64, GET_BE_U_8(cp));
1438 	OF_FWD(8);
1439 	/* n_buffers */
1440 	ND_PRINT(", n_buffers %u", GET_BE_U_4(cp));
1441 	OF_FWD(4);
1442 	/* n_tables */
1443 	ND_PRINT(", n_tables %u", GET_U_1(cp));
1444 	OF_FWD(1);
1445 	/* pad */
1446 	OF_FWD(3);
1447 	/* capabilities */
1448 	ND_PRINT("\n\t capabilities 0x%08x", GET_BE_U_4(cp));
1449 	of_bitmap_print(ndo, ofp_capabilities_bm, GET_BE_U_4(cp), OFPCAP_U);
1450 	OF_FWD(4);
1451 	/* actions */
1452 	ND_PRINT("\n\t actions 0x%08x", GET_BE_U_4(cp));
1453 	of_bitmap_print(ndo, ofpat_bm, GET_BE_U_4(cp), OFPAT_U);
1454 	OF_FWD(4);
1455 	/* ports */
1456 	while (len) {
1457 		ND_ICHECKMSG_U("\n\t  port def. length", len, <, OF_PHY_PORT_FIXLEN);
1458 		of10_phy_port_print(ndo, cp);
1459 		OF_FWD(OF_PHY_PORT_FIXLEN);
1460 	}
1461 	return;
1462 
1463 invalid: /* skip the undersized trailing data */
1464 	nd_print_invalid(ndo);
1465 	ND_TCHECK_LEN(cp, len);
1466 }
1467 
1468 /* [OF10] Section 5.3.2 */
1469 static void
of10_switch_config_msg_print(netdissect_options * ndo,const u_char * cp,u_int len _U_)1470 of10_switch_config_msg_print(netdissect_options *ndo,
1471                              const u_char *cp, u_int len _U_)
1472 {
1473 	/* flags */
1474 	ND_PRINT("\n\t flags %s",
1475 	         tok2str(ofp_config_str, "invalid (0x%04x)", GET_BE_U_2(cp)));
1476 	cp += 2;
1477 	/* miss_send_len */
1478 	ND_PRINT(", miss_send_len %u", GET_BE_U_2(cp));
1479 }
1480 
1481 /* [OF10] Section 5.3.3 */
1482 static void
of10_flow_mod_print(netdissect_options * ndo,const u_char * cp,u_int len)1483 of10_flow_mod_print(netdissect_options *ndo,
1484                     const u_char *cp, u_int len)
1485 {
1486 	uint16_t command;
1487 
1488 	/* match */
1489 	of10_match_print(ndo, "\n\t ", cp);
1490 	OF_FWD(OF_MATCH_FIXLEN);
1491 	/* cookie */
1492 	ND_PRINT("\n\t cookie 0x%016" PRIx64, GET_BE_U_8(cp));
1493 	OF_FWD(8);
1494 	/* command */
1495 	command = GET_BE_U_2(cp);
1496 	ND_PRINT(", command %s", tok2str(ofpfc_str, "invalid (0x%04x)", command));
1497 	OF_FWD(2);
1498 	/* idle_timeout */
1499 	if (GET_BE_U_2(cp))
1500 		ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
1501 	OF_FWD(2);
1502 	/* hard_timeout */
1503 	if (GET_BE_U_2(cp))
1504 		ND_PRINT(", hard_timeout %u", GET_BE_U_2(cp));
1505 	OF_FWD(2);
1506 	/* priority */
1507 	if (GET_BE_U_2(cp))
1508 		ND_PRINT(", priority %u", GET_BE_U_2(cp));
1509 	OF_FWD(2);
1510 	/* buffer_id */
1511 	if (command == OFPFC_ADD || command == OFPFC_MODIFY ||
1512 	    command == OFPFC_MODIFY_STRICT)
1513 		ND_PRINT(", buffer_id %s",
1514 		         tok2str(bufferid_str, "0x%08x", GET_BE_U_4(cp)));
1515 	OF_FWD(4);
1516 	/* out_port */
1517 	if (command == OFPFC_DELETE || command == OFPFC_DELETE_STRICT)
1518 		ND_PRINT(", out_port %s",
1519 		         tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1520 	OF_FWD(2);
1521 	/* flags */
1522 	ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
1523 	of_bitmap_print(ndo, ofpff_bm, GET_BE_U_2(cp), OFPFF_U);
1524 	OF_FWD(2);
1525 	/* actions */
1526 	of10_actions_print(ndo, "\n\t ", cp, len);
1527 }
1528 
1529 /* ibid */
1530 static void
of10_port_mod_print(netdissect_options * ndo,const u_char * cp,u_int len _U_)1531 of10_port_mod_print(netdissect_options *ndo,
1532                     const u_char *cp, u_int len _U_)
1533 {
1534 	/* port_no */
1535 	ND_PRINT("\n\t port_no %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1536 	cp += 2;
1537 	/* hw_addr */
1538 	ND_PRINT(", hw_addr %s", GET_ETHERADDR_STRING(cp));
1539 	cp += MAC_ADDR_LEN;
1540 	/* config */
1541 	ND_PRINT("\n\t  config 0x%08x", GET_BE_U_4(cp));
1542 	of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
1543 	cp += 4;
1544 	/* mask */
1545 	ND_PRINT("\n\t  mask 0x%08x", GET_BE_U_4(cp));
1546 	of_bitmap_print(ndo, ofppc_bm, GET_BE_U_4(cp), OFPPC_U);
1547 	cp += 4;
1548 	/* advertise */
1549 	ND_PRINT("\n\t  advertise 0x%08x", GET_BE_U_4(cp));
1550 	of_bitmap_print(ndo, ofppf_bm, GET_BE_U_4(cp), OFPPF_U);
1551 	cp += 4;
1552 	/* pad */
1553 	/* Always the last field, check bounds. */
1554 	ND_TCHECK_4(cp);
1555 }
1556 
1557 /* [OF10] Section 5.3.4 */
1558 static void
of10_queue_get_config_request_print(netdissect_options * ndo,const u_char * cp,u_int len _U_)1559 of10_queue_get_config_request_print(netdissect_options *ndo,
1560                                     const u_char *cp, u_int len _U_)
1561 {
1562 	/* port */
1563 	ND_PRINT("\n\t port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1564 	cp += 2;
1565 	/* pad */
1566 	/* Always the last field, check bounds. */
1567 	ND_TCHECK_2(cp);
1568 }
1569 
1570 /* ibid */
1571 static void
of10_queue_get_config_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1572 of10_queue_get_config_reply_print(netdissect_options *ndo,
1573                                   const u_char *cp, u_int len)
1574 {
1575 	/* port */
1576 	ND_PRINT("\n\t port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1577 	OF_FWD(2);
1578 	/* pad */
1579 	/* Sometimes the last field, check bounds. */
1580 	OF_CHK_FWD(6);
1581 	/* queues */
1582 	of10_queues_print(ndo, cp, len);
1583 }
1584 
1585 /* [OF10] Section 5.3.5 */
1586 static void
of10_stats_request_print(netdissect_options * ndo,const u_char * cp,u_int len)1587 of10_stats_request_print(netdissect_options *ndo,
1588                          const u_char *cp, u_int len)
1589 {
1590 	uint16_t type;
1591 
1592 	/* type */
1593 	type = GET_BE_U_2(cp);
1594 	OF_FWD(2);
1595 	ND_PRINT("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type));
1596 	/* flags */
1597 	ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
1598 	if (GET_BE_U_2(cp))
1599 		ND_PRINT(" (bogus)");
1600 	OF_FWD(2);
1601 	/* type-specific body of one of fixed lengths */
1602 	switch(type) {
1603 	case OFPST_DESC:
1604 	case OFPST_TABLE:
1605 		ND_ICHECK_U(len, !=, 0);
1606 		return;
1607 	case OFPST_FLOW:
1608 	case OFPST_AGGREGATE:
1609 		ND_ICHECK_U(len, !=, OF_FLOW_STATS_REQUEST_FIXLEN);
1610 		/* match */
1611 		of10_match_print(ndo, "\n\t ", cp);
1612 		OF_FWD(OF_MATCH_FIXLEN);
1613 		/* table_id */
1614 		ND_PRINT("\n\t table_id %s",
1615 			 tok2str(tableid_str, "%u", GET_U_1(cp)));
1616 		OF_FWD(1);
1617 		/* pad */
1618 		OF_FWD(1);
1619 		/* out_port */
1620 		ND_PRINT(", out_port %s",
1621 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1622 		return;
1623 	case OFPST_PORT:
1624 		ND_ICHECK_U(len, !=, OF_PORT_STATS_REQUEST_FIXLEN);
1625 		/* port_no */
1626 		ND_PRINT("\n\t port_no %s",
1627 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1628 		OF_FWD(2);
1629 		/* pad */
1630 		/* Always the last field, check bounds. */
1631 		OF_CHK_FWD(6);
1632 		return;
1633 	case OFPST_QUEUE:
1634 		ND_ICHECK_U(len, !=, OF_QUEUE_STATS_REQUEST_FIXLEN);
1635 		/* port_no */
1636 		ND_PRINT("\n\t port_no %s",
1637 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1638 		OF_FWD(2);
1639 		/* pad */
1640 		OF_FWD(2);
1641 		/* queue_id */
1642 		ND_PRINT(", queue_id %s",
1643 			 tok2str(ofpq_str, "%u", GET_BE_U_4(cp)));
1644 		return;
1645 	case OFPST_VENDOR:
1646 		of10_vendor_data_print(ndo, cp, len);
1647 		return;
1648 	}
1649 	return;
1650 
1651 invalid: /* skip the message body */
1652 	nd_print_invalid(ndo);
1653 	ND_TCHECK_LEN(cp, len);
1654 }
1655 
1656 /* ibid */
1657 static void
of10_desc_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1658 of10_desc_stats_reply_print(netdissect_options *ndo,
1659                             const u_char *cp, u_int len)
1660 {
1661 	ND_PRINT("\n\t ");
1662 	ND_ICHECK_U(len, !=, OF_DESC_STATS_REPLY_FIXLEN);
1663 	/* mfr_desc */
1664 	ND_PRINT(" mfr_desc '");
1665 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1666 	ND_PRINT("'");
1667 	OF_FWD(DESC_STR_LEN);
1668 	/* hw_desc */
1669 	ND_PRINT("\n\t  hw_desc '");
1670 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1671 	ND_PRINT("'");
1672 	OF_FWD(DESC_STR_LEN);
1673 	/* sw_desc */
1674 	ND_PRINT("\n\t  sw_desc '");
1675 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1676 	ND_PRINT("'");
1677 	OF_FWD(DESC_STR_LEN);
1678 	/* serial_num */
1679 	ND_PRINT("\n\t  serial_num '");
1680 	nd_printjnp(ndo, cp, SERIAL_NUM_LEN);
1681 	ND_PRINT("'");
1682 	OF_FWD(SERIAL_NUM_LEN);
1683 	/* dp_desc */
1684 	ND_PRINT("\n\t  dp_desc '");
1685 	nd_printjnp(ndo, cp, DESC_STR_LEN);
1686 	ND_PRINT("'");
1687 	return;
1688 
1689 invalid: /* skip the message body */
1690 	nd_print_invalid(ndo);
1691 	ND_TCHECK_LEN(cp, len);
1692 }
1693 
1694 /* ibid */
1695 static void
of10_flow_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1696 of10_flow_stats_reply_print(netdissect_options *ndo,
1697                             const u_char *cp, u_int len)
1698 {
1699 	while (len) {
1700 		uint16_t entry_len;
1701 
1702 		ND_PRINT("\n\t");
1703 		ND_ICHECKMSG_U("remaining length", len, <, OF_FLOW_STATS_REPLY_MINLEN);
1704 		/* length */
1705 		entry_len = GET_BE_U_2(cp);
1706 		ND_PRINT(" length %u", entry_len);
1707 		ND_ICHECK_U(entry_len, <, OF_FLOW_STATS_REPLY_MINLEN);
1708 		ND_ICHECK_U(entry_len, >, len);
1709 		OF_FWD(2);
1710 		/* table_id */
1711 		ND_PRINT(", table_id %s",
1712 			 tok2str(tableid_str, "%u", GET_U_1(cp)));
1713 		OF_FWD(1);
1714 		/* pad */
1715 		OF_FWD(1);
1716 		/* match */
1717 		of10_match_print(ndo, "\n\t  ", cp);
1718 		OF_FWD(OF_MATCH_FIXLEN);
1719 		/* duration_sec */
1720 		ND_PRINT("\n\t  duration_sec %u", GET_BE_U_4(cp));
1721 		OF_FWD(4);
1722 		/* duration_nsec */
1723 		ND_PRINT(", duration_nsec %u", GET_BE_U_4(cp));
1724 		OF_FWD(4);
1725 		/* priority */
1726 		ND_PRINT(", priority %u", GET_BE_U_2(cp));
1727 		OF_FWD(2);
1728 		/* idle_timeout */
1729 		ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
1730 		OF_FWD(2);
1731 		/* hard_timeout */
1732 		ND_PRINT(", hard_timeout %u", GET_BE_U_2(cp));
1733 		OF_FWD(2);
1734 		/* pad2 */
1735 		OF_FWD(6);
1736 		/* cookie */
1737 		ND_PRINT(", cookie 0x%016" PRIx64, GET_BE_U_8(cp));
1738 		OF_FWD(8);
1739 		/* packet_count */
1740 		ND_PRINT(", packet_count %" PRIu64, GET_BE_U_8(cp));
1741 		OF_FWD(8);
1742 		/* byte_count */
1743 		ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
1744 		OF_FWD(8);
1745 		/* actions */
1746 		of10_actions_print(ndo, "\n\t  ", cp, entry_len - OF_FLOW_STATS_REPLY_MINLEN);
1747 		OF_FWD(entry_len - OF_FLOW_STATS_REPLY_MINLEN);
1748 	} /* while */
1749 	return;
1750 
1751 invalid: /* skip the rest of flow statistics entries */
1752 	nd_print_invalid(ndo);
1753 	ND_TCHECK_LEN(cp, len);
1754 }
1755 
1756 /* ibid */
1757 static void
of10_aggregate_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1758 of10_aggregate_stats_reply_print(netdissect_options *ndo,
1759                                  const u_char *cp, u_int len)
1760 {
1761 	ND_PRINT("\n\t");
1762 	ND_ICHECKMSG_U("remaining length", len, !=, OF_AGGREGATE_STATS_REPLY_FIXLEN);
1763 	/* packet_count */
1764 	ND_PRINT(" packet_count %" PRIu64, GET_BE_U_8(cp));
1765 	OF_FWD(8);
1766 	/* byte_count */
1767 	ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
1768 	OF_FWD(8);
1769 	/* flow_count */
1770 	ND_PRINT(", flow_count %u", GET_BE_U_4(cp));
1771 	OF_FWD(4);
1772 	/* pad */
1773 	/* Always the last field, check bounds. */
1774 	ND_TCHECK_4(cp);
1775 	return;
1776 
1777 invalid: /* skip the message body */
1778 	nd_print_invalid(ndo);
1779 	ND_TCHECK_LEN(cp, len);
1780 }
1781 
1782 /* ibid */
1783 static void
of10_table_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1784 of10_table_stats_reply_print(netdissect_options *ndo,
1785                              const u_char *cp, u_int len)
1786 {
1787 	while (len) {
1788 		ND_PRINT("\n\t");
1789 		ND_ICHECKMSG_U("remaining length", len, <, OF_TABLE_STATS_REPLY_FIXLEN);
1790 		/* table_id */
1791 		ND_PRINT(" table_id %s",
1792 		         tok2str(tableid_str, "%u", GET_U_1(cp)));
1793 		OF_FWD(1);
1794 		/* pad */
1795 		OF_FWD(3);
1796 		/* name */
1797 		ND_PRINT(", name '");
1798 		nd_printjnp(ndo, cp, OFP_MAX_TABLE_NAME_LEN);
1799 		ND_PRINT("'");
1800 		OF_FWD(OFP_MAX_TABLE_NAME_LEN);
1801 		/* wildcards */
1802 		ND_PRINT("\n\t  wildcards 0x%08x", GET_BE_U_4(cp));
1803 		of_bitmap_print(ndo, ofpfw_bm, GET_BE_U_4(cp), OFPFW_U);
1804 		OF_FWD(4);
1805 		/* max_entries */
1806 		ND_PRINT("\n\t  max_entries %u", GET_BE_U_4(cp));
1807 		OF_FWD(4);
1808 		/* active_count */
1809 		ND_PRINT(", active_count %u", GET_BE_U_4(cp));
1810 		OF_FWD(4);
1811 		/* lookup_count */
1812 		ND_PRINT(", lookup_count %" PRIu64, GET_BE_U_8(cp));
1813 		OF_FWD(8);
1814 		/* matched_count */
1815 		ND_PRINT(", matched_count %" PRIu64, GET_BE_U_8(cp));
1816 		OF_FWD(8);
1817 	} /* while */
1818 	return;
1819 
1820 invalid: /* skip the undersized trailing data */
1821 	nd_print_invalid(ndo);
1822 	ND_TCHECK_LEN(cp, len);
1823 }
1824 
1825 /* ibid */
1826 static void
of10_port_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1827 of10_port_stats_reply_print(netdissect_options *ndo,
1828                             const u_char *cp, u_int len)
1829 {
1830 	while (len) {
1831 		ND_PRINT("\n\t ");
1832 		ND_ICHECKMSG_U("remaining length", len, <, OF_PORT_STATS_REPLY_FIXLEN);
1833 		/* port_no */
1834 		ND_PRINT(" port_no %s",
1835 			 tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1836 		OF_FWD(2);
1837 		if (ndo->ndo_vflag < 2) {
1838 			OF_CHK_FWD(OF_PORT_STATS_REPLY_FIXLEN - 2);
1839 			continue;
1840 		}
1841 		/* pad */
1842 		OF_FWD(6);
1843 		/* rx_packets */
1844 		ND_PRINT(", rx_packets %" PRIu64, GET_BE_U_8(cp));
1845 		OF_FWD(8);
1846 		/* tx_packets */
1847 		ND_PRINT(", tx_packets %" PRIu64, GET_BE_U_8(cp));
1848 		OF_FWD(8);
1849 		/* rx_bytes */
1850 		ND_PRINT(", rx_bytes %" PRIu64, GET_BE_U_8(cp));
1851 		OF_FWD(8);
1852 		/* tx_bytes */
1853 		ND_PRINT(", tx_bytes %" PRIu64, GET_BE_U_8(cp));
1854 		OF_FWD(8);
1855 		/* rx_dropped */
1856 		ND_PRINT(", rx_dropped %" PRIu64, GET_BE_U_8(cp));
1857 		OF_FWD(8);
1858 		/* tx_dropped */
1859 		ND_PRINT(", tx_dropped %" PRIu64, GET_BE_U_8(cp));
1860 		OF_FWD(8);
1861 		/* rx_errors */
1862 		ND_PRINT(", rx_errors %" PRIu64, GET_BE_U_8(cp));
1863 		OF_FWD(8);
1864 		/* tx_errors */
1865 		ND_PRINT(", tx_errors %" PRIu64, GET_BE_U_8(cp));
1866 		OF_FWD(8);
1867 		/* rx_frame_err */
1868 		ND_PRINT(", rx_frame_err %" PRIu64, GET_BE_U_8(cp));
1869 		OF_FWD(8);
1870 		/* rx_over_err */
1871 		ND_PRINT(", rx_over_err %" PRIu64, GET_BE_U_8(cp));
1872 		OF_FWD(8);
1873 		/* rx_crc_err */
1874 		ND_PRINT(", rx_crc_err %" PRIu64, GET_BE_U_8(cp));
1875 		OF_FWD(8);
1876 		/* collisions */
1877 		ND_PRINT(", collisions %" PRIu64, GET_BE_U_8(cp));
1878 		OF_FWD(8);
1879 	} /* while */
1880 	return;
1881 
1882 invalid: /* skip the undersized trailing data */
1883 	nd_print_invalid(ndo);
1884 	ND_TCHECK_LEN(cp, len);
1885 }
1886 
1887 /* ibid */
1888 static void
of10_queue_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1889 of10_queue_stats_reply_print(netdissect_options *ndo,
1890                              const u_char *cp, u_int len)
1891 {
1892 	while (len) {
1893 		ND_PRINT("\n\t ");
1894 		ND_ICHECKMSG_U("remaining length", len, <, OF_QUEUE_STATS_REPLY_FIXLEN);
1895 		/* port_no */
1896 		ND_PRINT(" port_no %s",
1897 		         tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1898 		OF_FWD(2);
1899 		/* pad */
1900 		OF_FWD(2);
1901 		/* queue_id */
1902 		ND_PRINT(", queue_id %u", GET_BE_U_4(cp));
1903 		OF_FWD(4);
1904 		/* tx_bytes */
1905 		ND_PRINT(", tx_bytes %" PRIu64, GET_BE_U_8(cp));
1906 		OF_FWD(8);
1907 		/* tx_packets */
1908 		ND_PRINT(", tx_packets %" PRIu64, GET_BE_U_8(cp));
1909 		OF_FWD(8);
1910 		/* tx_errors */
1911 		ND_PRINT(", tx_errors %" PRIu64, GET_BE_U_8(cp));
1912 		OF_FWD(8);
1913 	} /* while */
1914 	return;
1915 
1916 invalid: /* skip the undersized trailing data */
1917 	nd_print_invalid(ndo);
1918 	ND_TCHECK_LEN(cp, len);
1919 }
1920 
1921 /* ibid */
1922 static void
of10_stats_reply_print(netdissect_options * ndo,const u_char * cp,u_int len)1923 of10_stats_reply_print(netdissect_options *ndo,
1924                        const u_char *cp, u_int len)
1925 {
1926 	uint16_t type;
1927 
1928 	/* type */
1929 	type = GET_BE_U_2(cp);
1930 	ND_PRINT("\n\t type %s", tok2str(ofpst_str, "invalid (0x%04x)", type));
1931 	OF_FWD(2);
1932 	/* flags */
1933 	ND_PRINT(", flags 0x%04x", GET_BE_U_2(cp));
1934 	of_bitmap_print(ndo, ofpsf_reply_bm, GET_BE_U_2(cp), OFPSF_REPLY_U);
1935 	OF_FWD(2);
1936 
1937 	if (ndo->ndo_vflag > 0) {
1938 		void (*decoder)(netdissect_options *, const u_char *, u_int) =
1939 			type == OFPST_DESC      ? of10_desc_stats_reply_print      :
1940 			type == OFPST_FLOW      ? of10_flow_stats_reply_print      :
1941 			type == OFPST_AGGREGATE ? of10_aggregate_stats_reply_print :
1942 			type == OFPST_TABLE     ? of10_table_stats_reply_print     :
1943 			type == OFPST_PORT      ? of10_port_stats_reply_print      :
1944 			type == OFPST_QUEUE     ? of10_queue_stats_reply_print     :
1945 			type == OFPST_VENDOR    ? of10_vendor_data_print           :
1946 			NULL;
1947 		if (decoder != NULL) {
1948 			decoder(ndo, cp, len);
1949 			return;
1950 		}
1951 	}
1952 	ND_TCHECK_LEN(cp, len);
1953 }
1954 
1955 /* [OF10] Section 5.3.6 */
1956 static void
of10_packet_out_print(netdissect_options * ndo,const u_char * cp,u_int len)1957 of10_packet_out_print(netdissect_options *ndo,
1958                       const u_char *cp, u_int len)
1959 {
1960 	uint16_t actions_len;
1961 
1962 	/* buffer_id */
1963 	ND_PRINT("\n\t buffer_id 0x%08x", GET_BE_U_4(cp));
1964 	OF_FWD(4);
1965 	/* in_port */
1966 	ND_PRINT(", in_port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1967 	OF_FWD(2);
1968 	/* actions_len */
1969 	actions_len = GET_BE_U_2(cp);
1970 	ND_PRINT(", actions_len %u", actions_len);
1971 	OF_FWD(2);
1972 	ND_ICHECK_U(actions_len, >, len);
1973 	/* actions */
1974 	of10_actions_print(ndo, "\n\t ", cp, actions_len);
1975 	OF_FWD(actions_len);
1976 	/* data */
1977 	of10_packet_data_print(ndo, cp, len);
1978 	return;
1979 
1980 invalid: /* skip the rest of the message body */
1981 	nd_print_invalid(ndo);
1982 	ND_TCHECK_LEN(cp, len);
1983 }
1984 
1985 /* [OF10] Section 5.4.1 */
1986 static void
of10_packet_in_print(netdissect_options * ndo,const u_char * cp,u_int len)1987 of10_packet_in_print(netdissect_options *ndo,
1988                      const u_char *cp, u_int len)
1989 {
1990 	/* buffer_id */
1991 	ND_PRINT("\n\t buffer_id %s",
1992 	         tok2str(bufferid_str, "0x%08x", GET_BE_U_4(cp)));
1993 	OF_FWD(4);
1994 	/* total_len */
1995 	ND_PRINT(", total_len %u", GET_BE_U_2(cp));
1996 	OF_FWD(2);
1997 	/* in_port */
1998 	ND_PRINT(", in_port %s", tok2str(ofpp_str, "%u", GET_BE_U_2(cp)));
1999 	OF_FWD(2);
2000 	/* reason */
2001 	ND_PRINT(", reason %s",
2002 		 tok2str(ofpr_str, "invalid (0x%02x)", GET_U_1(cp)));
2003 	OF_FWD(1);
2004 	/* pad */
2005 	/* Sometimes the last field, check bounds. */
2006 	OF_CHK_FWD(1);
2007 	/* data */
2008 	of10_packet_data_print(ndo, cp, len);
2009 }
2010 
2011 /* [OF10] Section 5.4.2 */
2012 static void
of10_flow_removed_print(netdissect_options * ndo,const u_char * cp,u_int len _U_)2013 of10_flow_removed_print(netdissect_options *ndo,
2014                         const u_char *cp, u_int len _U_)
2015 {
2016 	/* match */
2017 	of10_match_print(ndo, "\n\t ", cp);
2018 	cp += OF_MATCH_FIXLEN;
2019 	/* cookie */
2020 	ND_PRINT("\n\t cookie 0x%016" PRIx64, GET_BE_U_8(cp));
2021 	cp += 8;
2022 	/* priority */
2023 	if (GET_BE_U_2(cp))
2024 		ND_PRINT(", priority %u", GET_BE_U_2(cp));
2025 	cp += 2;
2026 	/* reason */
2027 	ND_PRINT(", reason %s",
2028 	         tok2str(ofprr_str, "unknown (0x%02x)", GET_U_1(cp)));
2029 	cp += 1;
2030 	/* pad */
2031 	cp += 1;
2032 	/* duration_sec */
2033 	ND_PRINT(", duration_sec %u", GET_BE_U_4(cp));
2034 	cp += 4;
2035 	/* duration_nsec */
2036 	ND_PRINT(", duration_nsec %u", GET_BE_U_4(cp));
2037 	cp += 4;
2038 	/* idle_timeout */
2039 	if (GET_BE_U_2(cp))
2040 		ND_PRINT(", idle_timeout %u", GET_BE_U_2(cp));
2041 	cp += 2;
2042 	/* pad2 */
2043 	cp += 2;
2044 	/* packet_count */
2045 	ND_PRINT(", packet_count %" PRIu64, GET_BE_U_8(cp));
2046 	cp += 8;
2047 	/* byte_count */
2048 	ND_PRINT(", byte_count %" PRIu64, GET_BE_U_8(cp));
2049 }
2050 
2051 /* [OF10] Section 5.4.3 */
2052 static void
of10_port_status_print(netdissect_options * ndo,const u_char * cp,u_int len _U_)2053 of10_port_status_print(netdissect_options *ndo,
2054                        const u_char *cp, u_int len _U_)
2055 {
2056 	/* reason */
2057 	ND_PRINT("\n\t reason %s",
2058 	         tok2str(ofppr_str, "invalid (0x%02x)", GET_U_1(cp)));
2059 	cp += 1;
2060 	/* pad */
2061 	/* No need to check bounds, more data follows. */
2062 	cp += 7;
2063 	/* desc */
2064 	of10_phy_port_print(ndo, cp);
2065 }
2066 
2067 /* [OF10] Section 5.4.4 */
2068 static void
of10_error_print(netdissect_options * ndo,const u_char * cp,u_int len)2069 of10_error_print(netdissect_options *ndo,
2070                  const u_char *cp, u_int len)
2071 {
2072 	uint16_t type, code;
2073 	const struct tok *code_str;
2074 
2075 	/* type */
2076 	type = GET_BE_U_2(cp);
2077 	OF_FWD(2);
2078 	ND_PRINT("\n\t type %s", tok2str(ofpet_str, "invalid (0x%04x)", type));
2079 	/* code */
2080 	code = GET_BE_U_2(cp);
2081 	OF_FWD(2);
2082 	code_str = uint2tokary(of10_ofpet2tokary, type);
2083 	if (code_str != NULL)
2084 		ND_PRINT(", code %s",
2085 		         tok2str(code_str, "invalid (0x%04x)", code));
2086 	else
2087 		ND_PRINT(", code invalid (0x%04x)", code);
2088 	/* data */
2089 	of_data_print(ndo, cp, len);
2090 }
2091 
2092 static const struct of_msgtypeinfo of10_msgtypeinfo[OFPT_MAX + 1] = {
2093 	/*
2094 	 * [OF10] Section 5.5.1
2095 	 * Variable-size data.
2096 	 */
2097 	{
2098 		"HELLO",                    of_data_print,
2099 		REQ_MINLEN,                 0
2100 	},
2101 	/*
2102 	 * [OF10] Section 5.4.4
2103 	 * A fixed-size message body and variable-size data.
2104 	 */
2105 	{
2106 		"ERROR",                    of10_error_print,
2107 		REQ_MINLEN,                 OF_ERROR_MSG_MINLEN
2108 	},
2109 	/*
2110 	 * [OF10] Section 5.5.2
2111 	 * Variable-size data.
2112 	 */
2113 	{
2114 		"ECHO_REQUEST",             of_data_print,
2115 		REQ_MINLEN,                 0
2116 	},
2117 	/*
2118 	 * [OF10] Section 5.5.3
2119 	 * Variable-size data.
2120 	 */
2121 	{
2122 		"ECHO_REPLY",               of_data_print,
2123 		REQ_MINLEN,                 0
2124 	},
2125 	/*
2126 	 * [OF10] Section 5.5.4
2127 	 * A fixed-size message body and variable-size data.
2128 	 */
2129 	{
2130 		"VENDOR",                   of10_vendor_message_print,
2131 		REQ_MINLEN,                 OF_VENDOR_MINLEN
2132 	},
2133 	/*
2134 	 * [OF10] Section 5.3.1
2135 	 * No message body.
2136 	 */
2137 	{
2138 		"FEATURES_REQUEST",         NULL,
2139 		REQ_FIXLEN,                 0
2140 	},
2141 	/*
2142 	 * [OF10] Section 5.3.1
2143 	 * A fixed-size message body and n * fixed-size data units.
2144 	 */
2145 	{
2146 		"FEATURES_REPLY",           of10_features_reply_print,
2147 		REQ_MINLEN,                 OF_FEATURES_REPLY_MINLEN
2148 	},
2149 	/*
2150 	 * [OF10] Section 5.3.2
2151 	 * No message body.
2152 	 */
2153 	{
2154 		"GET_CONFIG_REQUEST",       NULL,
2155 		REQ_FIXLEN,                 0
2156 	},
2157 	/*
2158 	 * [OF10] Section 5.3.2
2159 	 * A fixed-size message body.
2160 	 */
2161 	{
2162 		"GET_CONFIG_REPLY",         of10_switch_config_msg_print,
2163 		REQ_FIXLEN,                 OF_SWITCH_CONFIG_FIXLEN
2164 	},
2165 	/*
2166 	 * [OF10] Section 5.3.2
2167 	 * A fixed-size message body.
2168 	 */
2169 	{
2170 		"SET_CONFIG",               of10_switch_config_msg_print,
2171 		REQ_FIXLEN,                 OF_SWITCH_CONFIG_FIXLEN
2172 	},
2173 	/*
2174 	 * [OF10] Section 5.4.1
2175 	 * A fixed-size message body and variable-size data.
2176 	 * (The 2 mock octets count in OF_PACKET_IN_MINLEN only.)
2177 	 */
2178 	{
2179 		"PACKET_IN",                of10_packet_in_print,
2180 		REQ_MINLEN,                 OF_PACKET_IN_MINLEN - 2
2181 	},
2182 	/*
2183 	 * [OF10] Section 5.4.2
2184 	 * A fixed-size message body.
2185 	 */
2186 	{
2187 		"FLOW_REMOVED",             of10_flow_removed_print,
2188 		REQ_FIXLEN,                 OF_FLOW_REMOVED_FIXLEN
2189 	},
2190 	/*
2191 	 * [OF10] Section 5.4.3
2192 	 * A fixed-size message body.
2193 	 */
2194 	{
2195 		"PORT_STATUS",              of10_port_status_print,
2196 		REQ_FIXLEN,                 OF_PORT_STATUS_FIXLEN
2197 	},
2198 	/*
2199 	 * [OF10] Section 5.3.6
2200 	 * A fixed-size message body, n * variable-size data units and
2201 	 * variable-size data.
2202 	 */
2203 	{
2204 		"PACKET_OUT",               of10_packet_out_print,
2205 		REQ_MINLEN,                 OF_PACKET_OUT_MINLEN
2206 	},
2207 	/*
2208 	 * [OF10] Section 5.3.3
2209 	 * A fixed-size message body and n * variable-size data units.
2210 	 */
2211 	{
2212 		"FLOW_MOD",                 of10_flow_mod_print,
2213 		REQ_MINLEN,                 OF_FLOW_MOD_MINLEN
2214 	},
2215 	/*
2216 	 * [OF10] Section 5.3.3
2217 	 * A fixed-size message body.
2218 	 */
2219 	{
2220 		"PORT_MOD",                 of10_port_mod_print,
2221 		REQ_FIXLEN,                 OF_PORT_MOD_FIXLEN
2222 	},
2223 	/*
2224 	 * [OF10] Section 5.3.5
2225 	 * A fixed-size message body and possibly more data of varying size
2226 	 * and structure.
2227 	 */
2228 	{
2229 		"STATS_REQUEST",            of10_stats_request_print,
2230 		REQ_MINLEN,                 OF_STATS_REQUEST_MINLEN
2231 	},
2232 	/*
2233 	 * [OF10] Section 5.3.5
2234 	 * A fixed-size message body and possibly more data of varying size
2235 	 * and structure.
2236 	 */
2237 	{
2238 		"STATS_REPLY",              of10_stats_reply_print,
2239 		REQ_MINLEN,                 OF_STATS_REPLY_MINLEN
2240 	},
2241 	/*
2242 	 * [OF10] Section 5.3.7
2243 	 * No message body.
2244 	 */
2245 	{
2246 		"BARRIER_REQUEST",          NULL,
2247 		REQ_FIXLEN,                 0
2248 	},
2249 	/*
2250 	 * [OF10] Section 5.3.7
2251 	 * No message body.
2252 	 */
2253 	{
2254 		"BARRIER_REPLY",            NULL,
2255 		REQ_FIXLEN,                 0
2256 	},
2257 	/*
2258 	 * [OF10] Section 5.3.4
2259 	 * A fixed-size message body.
2260 	 */
2261 	{
2262 		"QUEUE_GET_CONFIG_REQUEST", of10_queue_get_config_request_print,
2263 		REQ_FIXLEN,                 OF_QUEUE_GET_CONFIG_REQUEST_FIXLEN
2264 	},
2265 	/*
2266 	 * [OF10] Section 5.3.4
2267 	 * A fixed-size message body and n * variable-size data units.
2268 	 */
2269 	{
2270 		"QUEUE_GET_CONFIG_REPLY",   of10_queue_get_config_reply_print,
2271 		REQ_MINLEN,                 OF_QUEUE_GET_CONFIG_REPLY_MINLEN
2272 	},
2273 };
2274 
2275 const struct of_msgtypeinfo *
of10_identify_msgtype(const uint8_t type)2276 of10_identify_msgtype(const uint8_t type)
2277 {
2278 	return type <= OFPT_MAX ? &of10_msgtypeinfo[type] : NULL;
2279 }
2280