2 * Copyright (c) 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
20 /* OpenFlow message headers abstraction.
22 * OpenFlow headers are unnecessarily complicated:
24 * - Some messages with the same meaning were renumbered between 1.0 and 1.1.
26 * - "Statistics" (aka multipart) messages have a different format from other
29 * - The 1.0 header for statistics messages is an odd number of 32-bit words
30 * long, leaving 64-bit quantities in the body misaligned. The 1.1 header
31 * for statistics added a padding word to fix this misalignment, although
32 * many statistic message bodies did not change.
34 * - Vendor-defined messages have an additional header but no standard way to
35 * distinguish individual types of message within a given vendor.
37 * This file attempts to abstract out the differences between the various forms
41 #include "openvswitch/types.h"
42 #include "ofp-errors.h"
47 /* Raw identifiers for OpenFlow messages.
49 * Some OpenFlow messages with similar meanings have multiple variants across
50 * OpenFlow versions or vendor extensions. Each variant has a different
51 * OFPRAW_* enumeration constant. More specifically, if two messages have
52 * different types, different numbers, or different arguments, then they must
53 * have different OFPRAW_* values.
55 * The comments here must follow a stylized form because the "extract-ofp-msgs"
56 * program parses them at build time to generate data tables. The syntax of
59 * type versions (number): arguments.
61 * where the syntax of each part is:
63 * - type: One of the following:
65 * * OFPT: standard OpenFlow message.
66 * * OFPST: standard OpenFlow statistics or multipart message.
67 * * NXT: Nicira extension message.
68 * * NXST: Nicira extension statistics or multipart message.
69 * * ONFT: Open Networking Foundation extension message.
70 * * ONFST: Open Networking Foundation multipart message.
72 * As new vendors implement extensions it will make sense to expand the
73 * dictionary of possible types.
75 * - versions: The OpenFlow version or versions in which this message is
76 * supported, e.g. "1.0" or "1.1" or "1.0+".
79 * For OFPT, the 'type' in struct ofp_header.
80 * For OFPST, the 'type' in struct ofp_stats_msg or ofp11_stats_msg.
81 * For NXT or ONFT, the 'subtype' in struct ofp_vendor_header.
82 * For NXST or ONFST, the 'subtype' in an appropriate vendor stats
85 * - arguments: The types of data that follow the OpenFlow headers (the
86 * message "body"). This can be "void" if the message has no body.
87 * Otherwise, it should be a comma-separated sequence of C types. The
88 * last type in the sequence can end with [] if the body ends in a
89 * variable-length sequence.
91 * The arguments are used to validate the lengths of messages when a
92 * header is parsed. Any message whose length isn't valid as a length of
93 * the specified types will be rejected with OFPERR_OFPBRC_BAD_LEN.
95 * A few OpenFlow messages, such as OFPT_PACKET_IN, intentionally end with
96 * only part of a structure, up to some specified member. The syntax "up
97 * to <member>" indicates this, e.g. "struct ofp11_packet_in up to data".
100 /* Immutable standard messages.
102 * The OpenFlow standard promises to preserve these messages and their numbers
103 * in future versions, so we mark them as <all>, which covers every OpenFlow
104 * version numbered 0x01...0xff, rather than as OF1.0+, which covers only
105 * OpenFlow versions that we otherwise implement.
107 * Without <all> here, then we would fail to decode "hello" messages that
108 * announce a version higher than we understand, even though there still could
109 * be a version in common with the peer that we do understand. The <all>
110 * keyword is less useful for the other messages, because our OpenFlow channels
111 * accept only OpenFlow messages with a previously negotiated version.
114 /* OFPT <all> (0): uint8_t[]. */
117 /* OFPT <all> (1): struct ofp_error_msg, uint8_t[]. */
120 /* OFPT <all> (2): uint8_t[]. */
121 OFPRAW_OFPT_ECHO_REQUEST,
123 /* OFPT <all> (3): uint8_t[]. */
124 OFPRAW_OFPT_ECHO_REPLY,
126 /* Other standard messages.
128 * The meanings of these messages can (and often do) change from one version
129 * of OpenFlow to another. */
131 /* OFPT 1.0+ (5): void. */
132 OFPRAW_OFPT_FEATURES_REQUEST,
134 /* OFPT 1.0 (6): struct ofp_switch_features, struct ofp10_phy_port[]. */
135 OFPRAW_OFPT10_FEATURES_REPLY,
136 /* OFPT 1.1-1.2 (6): struct ofp_switch_features, struct ofp11_port[]. */
137 OFPRAW_OFPT11_FEATURES_REPLY,
138 /* OFPT 1.3+ (6): struct ofp_switch_features. */
139 OFPRAW_OFPT13_FEATURES_REPLY,
141 /* OFPT 1.0+ (7): void. */
142 OFPRAW_OFPT_GET_CONFIG_REQUEST,
144 /* OFPT 1.0+ (8): struct ofp_switch_config. */
145 OFPRAW_OFPT_GET_CONFIG_REPLY,
147 /* OFPT 1.0+ (9): struct ofp_switch_config. */
148 OFPRAW_OFPT_SET_CONFIG,
150 /* OFPT 1.0 (10): struct ofp10_packet_in up to data, uint8_t[]. */
151 OFPRAW_OFPT10_PACKET_IN,
152 /* OFPT 1.1 (10): struct ofp11_packet_in, uint8_t[]. */
153 OFPRAW_OFPT11_PACKET_IN,
154 /* OFPT 1.2 (10): struct ofp12_packet_in, uint8_t[]. */
155 OFPRAW_OFPT12_PACKET_IN,
156 /* OFPT 1.3+ (10): struct ofp12_packet_in, ovs_be64, uint8_t[]. */
157 OFPRAW_OFPT13_PACKET_IN,
158 /* NXT 1.0+ (17): struct nx_packet_in, uint8_t[]. */
159 OFPRAW_NXT_PACKET_IN,
160 /* NXT 1.0+ (30): uint8_t[8][]. */
161 OFPRAW_NXT_PACKET_IN2,
163 /* OFPT 1.0 (11): struct ofp10_flow_removed. */
164 OFPRAW_OFPT10_FLOW_REMOVED,
165 /* OFPT 1.1+ (11): struct ofp11_flow_removed, uint8_t[8][]. */
166 OFPRAW_OFPT11_FLOW_REMOVED,
167 /* NXT 1.0+ (14): struct nx_flow_removed, uint8_t[8][]. */
168 OFPRAW_NXT_FLOW_REMOVED,
170 /* OFPT 1.0 (12): struct ofp_port_status, struct ofp10_phy_port. */
171 OFPRAW_OFPT10_PORT_STATUS,
172 /* OFPT 1.1-1.3 (12): struct ofp_port_status, struct ofp11_port. */
173 OFPRAW_OFPT11_PORT_STATUS,
174 /* OFPT 1.4+ (12): struct ofp_port_status, struct ofp14_port, uint8_t[8][]. */
175 OFPRAW_OFPT14_PORT_STATUS,
177 /* OFPT 1.0 (13): struct ofp10_packet_out, uint8_t[]. */
178 OFPRAW_OFPT10_PACKET_OUT,
179 /* OFPT 1.1+ (13): struct ofp11_packet_out, uint8_t[]. */
180 OFPRAW_OFPT11_PACKET_OUT,
182 /* OFPT 1.0 (14): struct ofp10_flow_mod, uint8_t[8][]. */
183 OFPRAW_OFPT10_FLOW_MOD,
184 /* OFPT 1.1+ (14): struct ofp11_flow_mod, struct ofp11_instruction[]. */
185 OFPRAW_OFPT11_FLOW_MOD,
186 /* NXT 1.0+ (13): struct nx_flow_mod, uint8_t[8][]. */
189 /* OFPT 1.1-1.4 (15): struct ofp11_group_mod, uint8_t[8][]. */
190 OFPRAW_OFPT11_GROUP_MOD,
191 /* OFPT 1.5+ (15): struct ofp15_group_mod, uint8_t[8][]. */
192 OFPRAW_OFPT15_GROUP_MOD,
194 /* OFPT 1.0 (15): struct ofp10_port_mod. */
195 OFPRAW_OFPT10_PORT_MOD,
196 /* OFPT 1.1-1.3 (16): struct ofp11_port_mod. */
197 OFPRAW_OFPT11_PORT_MOD,
198 /* OFPT 1.4+ (16): struct ofp14_port_mod, uint8_t[8][]. */
199 OFPRAW_OFPT14_PORT_MOD,
201 /* OFPT 1.1-1.3 (17): struct ofp11_table_mod. */
202 OFPRAW_OFPT11_TABLE_MOD,
203 /* OFPT 1.4+ (17): struct ofp14_table_mod, uint8_t[8][]. */
204 OFPRAW_OFPT14_TABLE_MOD,
206 /* OFPT 1.0 (18): void. */
207 OFPRAW_OFPT10_BARRIER_REQUEST,
208 /* OFPT 1.1+ (20): void. */
209 OFPRAW_OFPT11_BARRIER_REQUEST,
211 /* OFPT 1.0 (19): void. */
212 OFPRAW_OFPT10_BARRIER_REPLY,
213 /* OFPT 1.1+ (21): void. */
214 OFPRAW_OFPT11_BARRIER_REPLY,
216 /* OFPT 1.0 (20): struct ofp10_queue_get_config_request. */
217 OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
218 /* OFPT 1.1-1.3 (22): struct ofp11_queue_get_config_request. */
219 OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
221 /* OFPT 1.0 (21): struct ofp10_queue_get_config_reply, uint8_t[8][]. */
222 OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
223 /* OFPT 1.1-1.3 (23): struct ofp11_queue_get_config_reply, uint8_t[8][]. */
224 OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
226 /* OFPT 1.2+ (24): struct ofp12_role_request. */
227 OFPRAW_OFPT12_ROLE_REQUEST,
228 /* NXT 1.0+ (10): struct nx_role_request. */
229 OFPRAW_NXT_ROLE_REQUEST,
231 /* OFPT 1.2+ (25): struct ofp12_role_request. */
232 OFPRAW_OFPT12_ROLE_REPLY,
233 /* NXT 1.0+ (11): struct nx_role_request. */
234 OFPRAW_NXT_ROLE_REPLY,
236 /* OFPT 1.3 (26): void. */
237 OFPRAW_OFPT13_GET_ASYNC_REQUEST,
238 /* OFPT 1.4+ (26): void. */
239 OFPRAW_OFPT14_GET_ASYNC_REQUEST,
240 /* OFPT 1.3 (27): struct ofp13_async_config. */
241 OFPRAW_OFPT13_GET_ASYNC_REPLY,
242 /* OFPT 1.4+ (27): uint8_t[8][]. */
243 OFPRAW_OFPT14_GET_ASYNC_REPLY,
244 /* OFPT 1.3 (28): struct ofp13_async_config. */
245 OFPRAW_OFPT13_SET_ASYNC,
246 /* NXT 1.0+ (19): struct nx_async_config. */
247 OFPRAW_NXT_SET_ASYNC_CONFIG,
248 /* NXT 1.0-1.3 (27): uint8_t[8][]. */
249 OFPRAW_NXT_SET_ASYNC_CONFIG2,
250 /* OFPT 1.4+ (28): uint8_t[8][]. */
251 OFPRAW_OFPT14_SET_ASYNC,
253 /* OFPT 1.3+ (29): struct ofp13_meter_mod, uint8_t[8][]. */
254 OFPRAW_OFPT13_METER_MOD,
256 /* OFPT 1.4+ (30): struct ofp14_role_status, uint8_t[8][]. */
257 OFPRAW_OFPT14_ROLE_STATUS,
259 /* OFPT 1.4+ (32): struct ofp14_requestforward, uint8_t[8][]. */
260 OFPRAW_OFPT14_REQUESTFORWARD,
262 /* OFPT 1.4+ (33): struct ofp14_bundle_ctrl_msg, uint8_t[8][]. */
263 OFPRAW_OFPT14_BUNDLE_CONTROL,
265 /* OFPT 1.4+ (34): struct ofp14_bundle_ctrl_msg, uint8_t[]. */
266 OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE,
268 /* Standard statistics. */
270 /* OFPST 1.0+ (0): void. */
271 OFPRAW_OFPST_DESC_REQUEST,
273 /* OFPST 1.0+ (0): struct ofp_desc_stats. */
274 OFPRAW_OFPST_DESC_REPLY,
276 /* OFPST 1.0 (1): struct ofp10_flow_stats_request. */
277 OFPRAW_OFPST10_FLOW_REQUEST,
278 /* OFPST 1.1+ (1): struct ofp11_flow_stats_request, uint8_t[8][]. */
279 OFPRAW_OFPST11_FLOW_REQUEST,
280 /* NXST 1.0 (0): struct nx_flow_stats_request, uint8_t[8][]. */
281 OFPRAW_NXST_FLOW_REQUEST,
283 /* OFPST 1.0 (1): uint8_t[]. */
284 OFPRAW_OFPST10_FLOW_REPLY,
285 /* OFPST 1.1-1.2 (1): uint8_t[]. */
286 OFPRAW_OFPST11_FLOW_REPLY,
287 /* OFPST 1.3+ (1): uint8_t[]. */
288 OFPRAW_OFPST13_FLOW_REPLY,
289 /* NXST 1.0 (0): uint8_t[]. */
290 OFPRAW_NXST_FLOW_REPLY,
292 /* OFPST 1.0 (2): struct ofp10_flow_stats_request. */
293 OFPRAW_OFPST10_AGGREGATE_REQUEST,
294 /* OFPST 1.1+ (2): struct ofp11_flow_stats_request, uint8_t[8][]. */
295 OFPRAW_OFPST11_AGGREGATE_REQUEST,
296 /* NXST 1.0 (1): struct nx_flow_stats_request, uint8_t[8][]. */
297 OFPRAW_NXST_AGGREGATE_REQUEST,
299 /* OFPST 1.0+ (2): struct ofp_aggregate_stats_reply. */
300 OFPRAW_OFPST_AGGREGATE_REPLY,
301 /* NXST 1.0 (1): struct ofp_aggregate_stats_reply. */
302 OFPRAW_NXST_AGGREGATE_REPLY,
304 /* OFPST 1.0+ (3): void. */
305 OFPRAW_OFPST_TABLE_REQUEST,
307 /* OFPST 1.0 (3): struct ofp10_table_stats[]. */
308 OFPRAW_OFPST10_TABLE_REPLY,
309 /* OFPST 1.1 (3): struct ofp11_table_stats[]. */
310 OFPRAW_OFPST11_TABLE_REPLY,
311 /* OFPST 1.2 (3): struct ofp12_table_stats[]. */
312 OFPRAW_OFPST12_TABLE_REPLY,
313 /* OFPST 1.3+ (3): struct ofp13_table_stats[]. */
314 OFPRAW_OFPST13_TABLE_REPLY,
316 /* OFPST 1.0 (4): struct ofp10_port_stats_request. */
317 OFPRAW_OFPST10_PORT_REQUEST,
318 /* OFPST 1.1+ (4): struct ofp11_port_stats_request. */
319 OFPRAW_OFPST11_PORT_REQUEST,
321 /* OFPST 1.0 (4): struct ofp10_port_stats[]. */
322 OFPRAW_OFPST10_PORT_REPLY,
323 /* OFPST 1.1-1.2 (4): struct ofp11_port_stats[]. */
324 OFPRAW_OFPST11_PORT_REPLY,
325 /* OFPST 1.3 (4): struct ofp13_port_stats[]. */
326 OFPRAW_OFPST13_PORT_REPLY,
327 /* OFPST 1.4+ (4): uint8_t[8][]. */
328 OFPRAW_OFPST14_PORT_REPLY,
330 /* OFPST 1.0 (5): struct ofp10_queue_stats_request. */
331 OFPRAW_OFPST10_QUEUE_REQUEST,
332 /* OFPST 1.1+ (5): struct ofp11_queue_stats_request. */
333 OFPRAW_OFPST11_QUEUE_REQUEST,
335 /* OFPST 1.0 (5): struct ofp10_queue_stats[]. */
336 OFPRAW_OFPST10_QUEUE_REPLY,
337 /* OFPST 1.1-1.2 (5): struct ofp11_queue_stats[]. */
338 OFPRAW_OFPST11_QUEUE_REPLY,
339 /* OFPST 1.3 (5): struct ofp13_queue_stats[]. */
340 OFPRAW_OFPST13_QUEUE_REPLY,
341 /* OFPST 1.4+ (5): uint8_t[8][]. */
342 OFPRAW_OFPST14_QUEUE_REPLY,
344 /* OFPST 1.1+ (6): struct ofp11_group_stats_request. */
345 OFPRAW_OFPST11_GROUP_REQUEST,
347 /* OFPST 1.1-1.2 (6): uint8_t[8][]. */
348 OFPRAW_OFPST11_GROUP_REPLY,
349 /* OFPST 1.3+ (6): uint8_t[8][]. */
350 OFPRAW_OFPST13_GROUP_REPLY,
352 /* OFPST 1.1-1.4 (7): void. */
353 OFPRAW_OFPST11_GROUP_DESC_REQUEST,
354 /* OFPST 1.5+ (7): struct ofp15_group_desc_request. */
355 OFPRAW_OFPST15_GROUP_DESC_REQUEST,
357 /* OFPST 1.1+ (7): uint8_t[8][]. */
358 OFPRAW_OFPST11_GROUP_DESC_REPLY,
360 /* OFPST 1.2+ (8): void. */
361 OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
363 /* OFPST 1.2+ (8): struct ofp12_group_features_stats. */
364 OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
366 /* OFPST 1.3+ (9): struct ofp13_meter_multipart_request. */
367 OFPRAW_OFPST13_METER_REQUEST,
369 /* OFPST 1.3+ (9): uint8_t[8][]. */
370 OFPRAW_OFPST13_METER_REPLY,
372 /* OFPST 1.3+ (10): struct ofp13_meter_multipart_request. */
373 OFPRAW_OFPST13_METER_CONFIG_REQUEST,
375 /* OFPST 1.3+ (10): uint8_t[8][]. */
376 OFPRAW_OFPST13_METER_CONFIG_REPLY,
378 /* OFPST 1.3+ (11): void. */
379 OFPRAW_OFPST13_METER_FEATURES_REQUEST,
381 /* OFPST 1.3+ (11): struct ofp13_meter_features. */
382 OFPRAW_OFPST13_METER_FEATURES_REPLY,
384 /* OFPST 1.3+ (12): void. */
385 OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
387 /* OFPST 1.3+ (12): struct ofp13_table_features, uint8_t[8][]. */
388 OFPRAW_OFPST13_TABLE_FEATURES_REPLY,
390 /* OFPST 1.4+ (14): void. */
391 OFPRAW_OFPST14_TABLE_DESC_REQUEST,
393 /* OFPST 1.4+ (14): struct ofp14_table_desc, uint8_t[8][]. */
394 OFPRAW_OFPST14_TABLE_DESC_REPLY,
396 /* OFPST 1.0-1.4 (13): void. */
397 OFPRAW_OFPST10_PORT_DESC_REQUEST,
398 /* OFPST 1.5+ (13): struct ofp15_port_desc_request. */
399 OFPRAW_OFPST15_PORT_DESC_REQUEST,
401 /* OFPST 1.0 (13): struct ofp10_phy_port[]. */
402 OFPRAW_OFPST10_PORT_DESC_REPLY,
403 /* OFPST 1.1-1.3 (13): struct ofp11_port[]. */
404 OFPRAW_OFPST11_PORT_DESC_REPLY,
405 /* OFPST 1.4+ (13): uint8_t[8][]. */
406 OFPRAW_OFPST14_PORT_DESC_REPLY,
408 /* OFPST 1.4+ (15): struct ofp14_queue_desc_request. */
409 OFPRAW_OFPST14_QUEUE_DESC_REQUEST,
410 /* OFPST 1.4+ (15): uint8_t[8][]. */
411 OFPRAW_OFPST14_QUEUE_DESC_REPLY,
413 /* OFPST 1.4+ (16): uint8_t[8][]. */
414 OFPRAW_OFPST14_FLOW_MONITOR_REQUEST,
415 /* NXST 1.0 (2): uint8_t[8][]. */
416 OFPRAW_NXST_FLOW_MONITOR_REQUEST,
418 /* OFPST 1.4+ (16): uint8_t[8][]. */
419 OFPRAW_OFPST14_FLOW_MONITOR_REPLY,
420 /* NXST 1.0 (2): uint8_t[8][]. */
421 OFPRAW_NXST_FLOW_MONITOR_REPLY,
423 /* Nicira extension messages.
425 * Nicira extensions that correspond to standard OpenFlow messages are listed
426 * alongside the standard versions above. */
428 /* NXT 1.0 (12): struct nx_set_flow_format. */
429 OFPRAW_NXT_SET_FLOW_FORMAT,
431 /* NXT 1.0+ (15): struct nx_flow_mod_table_id. */
432 OFPRAW_NXT_FLOW_MOD_TABLE_ID,
434 /* NXT 1.0+ (16): struct nx_set_packet_in_format. */
435 OFPRAW_NXT_SET_PACKET_IN_FORMAT,
437 /* NXT 1.0+ (18): void. */
440 /* NXT 1.0+ (20): struct nx_controller_id. */
441 OFPRAW_NXT_SET_CONTROLLER_ID,
443 /* NXT 1.0+ (21): struct nx_flow_monitor_cancel. */
444 OFPRAW_NXT_FLOW_MONITOR_CANCEL,
446 /* NXT 1.0+ (22): void. */
447 OFPRAW_NXT_FLOW_MONITOR_PAUSED,
449 /* NXT 1.0+ (23): void. */
450 OFPRAW_NXT_FLOW_MONITOR_RESUMED,
452 /* NXT 1.0+ (24): struct nx_tlv_table_mod, struct nx_tlv_map[]. */
453 OFPRAW_NXT_TLV_TABLE_MOD,
455 /* NXT 1.0+ (25): void. */
456 OFPRAW_NXT_TLV_TABLE_REQUEST,
458 /* NXT 1.0+ (26): struct nx_tlv_table_reply, struct nx_tlv_map[]. */
459 OFPRAW_NXT_TLV_TABLE_REPLY,
461 /* NXT 1.0+ (28): uint8_t[8][]. */
465 /* Decoding messages into OFPRAW_* values. */
466 enum ofperr ofpraw_decode(enum ofpraw *, const struct ofp_header *);
467 enum ofpraw ofpraw_decode_assert(const struct ofp_header *);
468 enum ofperr ofpraw_pull(enum ofpraw *, struct ofpbuf *);
469 enum ofpraw ofpraw_pull_assert(struct ofpbuf *);
471 enum ofperr ofpraw_decode_partial(enum ofpraw *,
472 const struct ofp_header *, size_t length);
474 /* Encoding messages using OFPRAW_* values. */
475 struct ofpbuf *ofpraw_alloc(enum ofpraw, uint8_t ofp_version,
476 size_t extra_tailroom);
477 struct ofpbuf *ofpraw_alloc_xid(enum ofpraw, uint8_t ofp_version,
478 ovs_be32 xid, size_t extra_tailroom);
479 struct ofpbuf *ofpraw_alloc_reply(enum ofpraw,
480 const struct ofp_header *request,
481 size_t extra_tailroom);
482 struct ofpbuf *ofpraw_alloc_stats_reply(const struct ofp_header *request,
483 size_t extra_tailroom);
485 void ofpraw_put(enum ofpraw, uint8_t ofp_version, struct ofpbuf *);
486 void ofpraw_put_xid(enum ofpraw, uint8_t ofp_version, ovs_be32 xid,
488 void ofpraw_put_reply(enum ofpraw, const struct ofp_header *request,
490 void ofpraw_put_stats_reply(const struct ofp_header *request, struct ofpbuf *);
492 /* Information about OFPRAW_* values. */
493 const char *ofpraw_get_name(enum ofpraw);
494 enum ofpraw ofpraw_stats_request_to_reply(enum ofpraw, uint8_t version);
496 /* Semantic identifiers for OpenFlow messages.
498 * Each OFPTYPE_* enumeration constant represents one or more concrete format
499 * of OpenFlow message. When two variants of a message have essentially the
500 * same meaning, they are assigned a single OFPTYPE_* value.
502 * The comments here must follow a stylized form because the "extract-ofp-msgs"
503 * program parses them at build time to generate data tables. The format is
504 * simply to list each OFPRAW_* enumeration constant for a given OFPTYPE_*,
505 * each followed by a period. */
507 /* Immutable messages. */
508 OFPTYPE_HELLO, /* OFPRAW_OFPT_HELLO. */
509 OFPTYPE_ERROR, /* OFPRAW_OFPT_ERROR. */
510 OFPTYPE_ECHO_REQUEST, /* OFPRAW_OFPT_ECHO_REQUEST. */
511 OFPTYPE_ECHO_REPLY, /* OFPRAW_OFPT_ECHO_REPLY. */
513 /* Switch configuration messages. */
514 OFPTYPE_FEATURES_REQUEST, /* OFPRAW_OFPT_FEATURES_REQUEST. */
515 OFPTYPE_FEATURES_REPLY, /* OFPRAW_OFPT10_FEATURES_REPLY.
516 * OFPRAW_OFPT11_FEATURES_REPLY.
517 * OFPRAW_OFPT13_FEATURES_REPLY. */
518 OFPTYPE_GET_CONFIG_REQUEST, /* OFPRAW_OFPT_GET_CONFIG_REQUEST. */
519 OFPTYPE_GET_CONFIG_REPLY, /* OFPRAW_OFPT_GET_CONFIG_REPLY. */
520 OFPTYPE_SET_CONFIG, /* OFPRAW_OFPT_SET_CONFIG. */
522 /* Asynchronous messages. */
523 OFPTYPE_PACKET_IN, /* OFPRAW_OFPT10_PACKET_IN.
524 * OFPRAW_OFPT11_PACKET_IN.
525 * OFPRAW_OFPT12_PACKET_IN.
526 * OFPRAW_OFPT13_PACKET_IN.
527 * OFPRAW_NXT_PACKET_IN2.
528 * OFPRAW_NXT_PACKET_IN. */
529 OFPTYPE_FLOW_REMOVED, /* OFPRAW_OFPT10_FLOW_REMOVED.
530 * OFPRAW_OFPT11_FLOW_REMOVED.
531 * OFPRAW_NXT_FLOW_REMOVED. */
532 OFPTYPE_PORT_STATUS, /* OFPRAW_OFPT10_PORT_STATUS.
533 * OFPRAW_OFPT11_PORT_STATUS.
534 * OFPRAW_OFPT14_PORT_STATUS. */
536 /* Controller command messages. */
537 OFPTYPE_PACKET_OUT, /* OFPRAW_OFPT10_PACKET_OUT.
538 * OFPRAW_OFPT11_PACKET_OUT. */
539 OFPTYPE_FLOW_MOD, /* OFPRAW_OFPT10_FLOW_MOD.
540 * OFPRAW_OFPT11_FLOW_MOD.
541 * OFPRAW_NXT_FLOW_MOD. */
542 OFPTYPE_GROUP_MOD, /* OFPRAW_OFPT11_GROUP_MOD.
543 * OFPRAW_OFPT15_GROUP_MOD. */
544 OFPTYPE_PORT_MOD, /* OFPRAW_OFPT10_PORT_MOD.
545 * OFPRAW_OFPT11_PORT_MOD.
546 * OFPRAW_OFPT14_PORT_MOD. */
547 OFPTYPE_TABLE_MOD, /* OFPRAW_OFPT11_TABLE_MOD.
548 * OFPRAW_OFPT14_TABLE_MOD. */
550 /* Barrier messages. */
551 OFPTYPE_BARRIER_REQUEST, /* OFPRAW_OFPT10_BARRIER_REQUEST.
552 * OFPRAW_OFPT11_BARRIER_REQUEST. */
553 OFPTYPE_BARRIER_REPLY, /* OFPRAW_OFPT10_BARRIER_REPLY.
554 * OFPRAW_OFPT11_BARRIER_REPLY. */
556 /* Queue Configuration messages. */
557 OFPTYPE_QUEUE_GET_CONFIG_REQUEST, /* OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST.
558 * OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST.
559 * OFPRAW_OFPST14_QUEUE_DESC_REQUEST. */
560 OFPTYPE_QUEUE_GET_CONFIG_REPLY, /* OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY.
561 * OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY.
562 * OFPRAW_OFPST14_QUEUE_DESC_REPLY. */
564 /* Controller role change request messages. */
565 OFPTYPE_ROLE_REQUEST, /* OFPRAW_OFPT12_ROLE_REQUEST.
566 * OFPRAW_NXT_ROLE_REQUEST. */
567 OFPTYPE_ROLE_REPLY, /* OFPRAW_OFPT12_ROLE_REPLY.
568 * OFPRAW_NXT_ROLE_REPLY. */
570 /* Asynchronous message configuration. */
571 OFPTYPE_GET_ASYNC_REQUEST, /* OFPRAW_OFPT13_GET_ASYNC_REQUEST.
572 * OFPRAW_OFPT14_GET_ASYNC_REQUEST. */
573 OFPTYPE_GET_ASYNC_REPLY, /* OFPRAW_OFPT13_GET_ASYNC_REPLY.
574 * OFPRAW_OFPT14_GET_ASYNC_REPLY. */
575 OFPTYPE_SET_ASYNC_CONFIG, /* OFPRAW_NXT_SET_ASYNC_CONFIG.
576 * OFPRAW_NXT_SET_ASYNC_CONFIG2.
577 * OFPRAW_OFPT13_SET_ASYNC.
578 * OFPRAW_OFPT14_SET_ASYNC. */
580 /* Meters and rate limiters configuration messages. */
581 OFPTYPE_METER_MOD, /* OFPRAW_OFPT13_METER_MOD. */
583 /* Controller role change event messages. */
584 OFPTYPE_ROLE_STATUS, /* OFPRAW_OFPT14_ROLE_STATUS. */
586 /* Request forwarding by the switch. */
587 OFPTYPE_REQUESTFORWARD, /* OFPRAW_OFPT14_REQUESTFORWARD. */
589 OFPTYPE_BUNDLE_CONTROL, /* OFPRAW_OFPT14_BUNDLE_CONTROL. */
591 OFPTYPE_BUNDLE_ADD_MESSAGE, /* OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE. */
594 OFPTYPE_DESC_STATS_REQUEST, /* OFPRAW_OFPST_DESC_REQUEST. */
595 OFPTYPE_DESC_STATS_REPLY, /* OFPRAW_OFPST_DESC_REPLY. */
596 OFPTYPE_FLOW_STATS_REQUEST, /* OFPRAW_OFPST10_FLOW_REQUEST.
597 * OFPRAW_OFPST11_FLOW_REQUEST.
598 * OFPRAW_NXST_FLOW_REQUEST. */
599 OFPTYPE_FLOW_STATS_REPLY, /* OFPRAW_OFPST10_FLOW_REPLY.
600 * OFPRAW_OFPST11_FLOW_REPLY.
601 * OFPRAW_OFPST13_FLOW_REPLY.
602 * OFPRAW_NXST_FLOW_REPLY. */
603 OFPTYPE_AGGREGATE_STATS_REQUEST, /* OFPRAW_OFPST10_AGGREGATE_REQUEST.
604 * OFPRAW_OFPST11_AGGREGATE_REQUEST.
605 * OFPRAW_NXST_AGGREGATE_REQUEST. */
606 OFPTYPE_AGGREGATE_STATS_REPLY, /* OFPRAW_OFPST_AGGREGATE_REPLY.
607 * OFPRAW_NXST_AGGREGATE_REPLY. */
608 OFPTYPE_TABLE_STATS_REQUEST, /* OFPRAW_OFPST_TABLE_REQUEST. */
609 OFPTYPE_TABLE_STATS_REPLY, /* OFPRAW_OFPST10_TABLE_REPLY.
610 * OFPRAW_OFPST11_TABLE_REPLY.
611 * OFPRAW_OFPST12_TABLE_REPLY.
612 * OFPRAW_OFPST13_TABLE_REPLY. */
613 OFPTYPE_PORT_STATS_REQUEST, /* OFPRAW_OFPST10_PORT_REQUEST.
614 * OFPRAW_OFPST11_PORT_REQUEST. */
615 OFPTYPE_PORT_STATS_REPLY, /* OFPRAW_OFPST10_PORT_REPLY.
616 * OFPRAW_OFPST11_PORT_REPLY.
617 * OFPRAW_OFPST13_PORT_REPLY.
618 * OFPRAW_OFPST14_PORT_REPLY. */
619 OFPTYPE_QUEUE_STATS_REQUEST, /* OFPRAW_OFPST10_QUEUE_REQUEST.
620 * OFPRAW_OFPST11_QUEUE_REQUEST. */
621 OFPTYPE_QUEUE_STATS_REPLY, /* OFPRAW_OFPST10_QUEUE_REPLY.
622 * OFPRAW_OFPST11_QUEUE_REPLY.
623 * OFPRAW_OFPST13_QUEUE_REPLY.
624 * OFPRAW_OFPST14_QUEUE_REPLY. */
626 OFPTYPE_GROUP_STATS_REQUEST, /* OFPRAW_OFPST11_GROUP_REQUEST. */
628 OFPTYPE_GROUP_STATS_REPLY, /* OFPRAW_OFPST11_GROUP_REPLY.
629 * OFPRAW_OFPST13_GROUP_REPLY. */
631 OFPTYPE_GROUP_DESC_STATS_REQUEST, /* OFPRAW_OFPST11_GROUP_DESC_REQUEST.
632 * OFPRAW_OFPST15_GROUP_DESC_REQUEST. */
634 OFPTYPE_GROUP_DESC_STATS_REPLY, /* OFPRAW_OFPST11_GROUP_DESC_REPLY. */
636 OFPTYPE_GROUP_FEATURES_STATS_REQUEST, /* OFPRAW_OFPST12_GROUP_FEATURES_REQUEST. */
638 OFPTYPE_GROUP_FEATURES_STATS_REPLY, /* OFPRAW_OFPST12_GROUP_FEATURES_REPLY. */
640 OFPTYPE_METER_STATS_REQUEST, /* OFPRAW_OFPST13_METER_REQUEST. */
642 OFPTYPE_METER_STATS_REPLY, /* OFPRAW_OFPST13_METER_REPLY. */
644 OFPTYPE_METER_CONFIG_STATS_REQUEST, /* OFPRAW_OFPST13_METER_CONFIG_REQUEST. */
646 OFPTYPE_METER_CONFIG_STATS_REPLY, /* OFPRAW_OFPST13_METER_CONFIG_REPLY. */
648 OFPTYPE_METER_FEATURES_STATS_REQUEST, /* OFPRAW_OFPST13_METER_FEATURES_REQUEST. */
650 OFPTYPE_METER_FEATURES_STATS_REPLY, /* OFPRAW_OFPST13_METER_FEATURES_REPLY. */
652 OFPTYPE_TABLE_FEATURES_STATS_REQUEST, /* OFPRAW_OFPST13_TABLE_FEATURES_REQUEST. */
654 OFPTYPE_TABLE_FEATURES_STATS_REPLY, /* OFPRAW_OFPST13_TABLE_FEATURES_REPLY. */
656 OFPTYPE_TABLE_DESC_REQUEST, /* OFPRAW_OFPST14_TABLE_DESC_REQUEST. */
658 OFPTYPE_TABLE_DESC_REPLY, /* OFPRAW_OFPST14_TABLE_DESC_REPLY. */
660 OFPTYPE_PORT_DESC_STATS_REQUEST, /* OFPRAW_OFPST10_PORT_DESC_REQUEST.
661 * OFPRAW_OFPST15_PORT_DESC_REQUEST. */
663 OFPTYPE_PORT_DESC_STATS_REPLY, /* OFPRAW_OFPST10_PORT_DESC_REPLY.
664 * OFPRAW_OFPST11_PORT_DESC_REPLY.
665 * OFPRAW_OFPST14_PORT_DESC_REPLY. */
667 OFPTYPE_FLOW_MONITOR_STATS_REQUEST, /* OFPRAW_OFPST14_FLOW_MONITOR_REQUEST.
668 * OFPRAW_NXST_FLOW_MONITOR_REQUEST. */
669 OFPTYPE_FLOW_MONITOR_STATS_REPLY, /* OFPRAW_OFPST14_FLOW_MONITOR_REPLY.
670 * OFPRAW_NXST_FLOW_MONITOR_REPLY. */
672 /* Nicira extensions. */
673 OFPTYPE_SET_FLOW_FORMAT, /* OFPRAW_NXT_SET_FLOW_FORMAT. */
674 OFPTYPE_FLOW_MOD_TABLE_ID, /* OFPRAW_NXT_FLOW_MOD_TABLE_ID. */
675 OFPTYPE_SET_PACKET_IN_FORMAT, /* OFPRAW_NXT_SET_PACKET_IN_FORMAT. */
676 OFPTYPE_FLOW_AGE, /* OFPRAW_NXT_FLOW_AGE. */
677 OFPTYPE_SET_CONTROLLER_ID, /* OFPRAW_NXT_SET_CONTROLLER_ID. */
678 OFPTYPE_NXT_TLV_TABLE_MOD, /* OFPRAW_NXT_TLV_TABLE_MOD. */
679 OFPTYPE_NXT_TLV_TABLE_REQUEST, /* OFPRAW_NXT_TLV_TABLE_REQUEST. */
680 OFPTYPE_NXT_TLV_TABLE_REPLY, /* OFPRAW_NXT_TLV_TABLE_REPLY. */
681 OFPTYPE_NXT_RESUME, /* OFPRAW_NXT_RESUME. */
683 /* Flow monitor extension. */
684 OFPTYPE_FLOW_MONITOR_CANCEL, /* OFPRAW_NXT_FLOW_MONITOR_CANCEL. */
685 OFPTYPE_FLOW_MONITOR_PAUSED, /* OFPRAW_NXT_FLOW_MONITOR_PAUSED. */
686 OFPTYPE_FLOW_MONITOR_RESUMED, /* OFPRAW_NXT_FLOW_MONITOR_RESUMED. */
689 /* Decoding messages into OFPTYPE_* values. */
690 enum ofperr ofptype_decode(enum ofptype *, const struct ofp_header *);
691 enum ofperr ofptype_pull(enum ofptype *, struct ofpbuf *);
692 enum ofptype ofptype_from_ofpraw(enum ofpraw);
694 /* Information about OFTYPE_* values. */
695 const char *ofptype_get_name(enum ofptype);
697 /* OpenFlow message properties. */
698 void ofpmsg_update_length(struct ofpbuf *);
699 const void *ofpmsg_body(const struct ofp_header *);
700 bool ofpmsg_is_stat_request(const struct ofp_header *);
702 /* Multipart messages (aka "statistics").
704 * Individual OpenFlow messages are limited to 64 kB in size, but some messages
705 * need to be longer. Therefore, multipart messages allow a longer message to
706 * be divided into multiple parts at some convenient boundary. For example,
707 * limiting the response to a "flow dump" request to 64 kB would unreasonably
708 * limit the maximum number of flows in an OpenFlow switch, so a "flow dump" is
709 * expressed as a multipart request/reply pair, with the reply broken into
710 * pieces between flows.
712 * Multipart messages always consist of a request/reply pair.
714 * In OpenFlow 1.0, 1.1, and 1.2, requests must always fit in a single message,
715 * that is, only a multipart reply may have more than one part. OpenFlow 1.3
716 * adds one multipart request. This code does not yet support multipart
719 /* Encoding multipart replies.
721 * These functions are useful for multipart replies that might really require
722 * more than one message. A multipart message that is known in advance to fit
723 * within 64 kB doesn't need any special treatment, so you might as well use
724 * the ofpraw_alloc_*() functions.
726 * These functions work with a "struct ovs_list" of "struct ofpbuf"s, each of
727 * which represents one part of a multipart message. */
728 void ofpmp_init(struct ovs_list *, const struct ofp_header *request);
729 struct ofpbuf *ofpmp_reserve(struct ovs_list *, size_t len);
730 void *ofpmp_append(struct ovs_list *, size_t len);
731 void ofpmp_postappend(struct ovs_list *, size_t start_ofs);
733 enum ofp_version ofpmp_version(struct ovs_list *);
734 enum ofpraw ofpmp_decode_raw(struct ovs_list *);
736 /* Decoding multipart replies. */
737 uint16_t ofpmp_flags(const struct ofp_header *);
738 bool ofpmp_more(const struct ofp_header *);
740 #endif /* ofp-msgs.h */