2 * Copyright (c) 2008, 2009, 2010, 2011, 2012 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.
24 #include "classifier.h"
29 #include "openflow/nicira-ext.h"
30 #include "openvswitch/types.h"
35 enum ofperr ofputil_port_from_ofp11(ovs_be32 ofp11_port, uint16_t *ofp10_port);
36 ovs_be32 ofputil_port_to_ofp11(uint16_t ofp10_port);
38 enum ofperr ofputil_check_output_port(uint16_t ofp_port, int max_ports);
39 bool ofputil_port_from_string(const char *, uint16_t *portp);
40 void ofputil_format_port(uint16_t port, struct ds *);
42 /* Converting OFPFW10_NW_SRC_MASK and OFPFW10_NW_DST_MASK wildcard bit counts
43 * to and from IP bitmasks. */
44 ovs_be32 ofputil_wcbits_to_netmask(int wcbits);
45 int ofputil_netmask_to_wcbits(ovs_be32 netmask);
49 * A "protocol" is an OpenFlow version plus, for some OpenFlow versions,
50 * a bit extra about the flow match format in use.
52 * These are arranged from most portable to least portable, or alternatively
53 * from least powerful to most powerful. Protocols earlier on the list are
54 * more likely to be understood for the purpose of making requests, but
55 * protocol later on the list are more likely to accurately describe a flow
58 * On any given OpenFlow connection, a single protocol is in effect at any
59 * given time. These values use separate bits only because that makes it easy
60 * to test whether a particular protocol is within a given set of protocols and
61 * to implement set union and intersection.
63 enum ofputil_protocol {
64 /* OpenFlow 1.0 protocols.
66 * The "STD" protocols use the standard OpenFlow 1.0 flow format.
67 * The "NXM" protocols use the Nicira Extensible Match (NXM) flow format.
69 * The protocols with "TID" mean that the nx_flow_mod_table_id Nicira
70 * extension has been enabled. The other protocols have it disabled.
72 #define OFPUTIL_P_NONE 0
73 OFPUTIL_P_OF10_STD = 1 << 0,
74 OFPUTIL_P_OF10_STD_TID = 1 << 1,
75 OFPUTIL_P_OF10_NXM = 1 << 2,
76 OFPUTIL_P_OF10_NXM_TID = 1 << 3,
77 #define OFPUTIL_P_OF10_STD_ANY (OFPUTIL_P_OF10_STD | OFPUTIL_P_OF10_STD_TID)
78 #define OFPUTIL_P_OF10_NXM_ANY (OFPUTIL_P_OF10_NXM | OFPUTIL_P_OF10_NXM_TID)
80 /* OpenFlow 1.2+ protocols (only one variant each).
82 * These use the standard OpenFlow Extensible Match (OXM) flow format.
84 * OpenFlow 1.2+ always operates with an equivalent of the
85 * nx_flow_mod_table_id Nicira extension enabled, so there is no "TID"
87 OFPUTIL_P_OF12_OXM = 1 << 4,
88 OFPUTIL_P_OF13_OXM = 1 << 5,
91 #define OFPUTIL_P_ANY ((1 << 6) - 1)
93 /* Protocols in which a specific table may be specified in flow_mods. */
94 #define OFPUTIL_P_TID (OFPUTIL_P_OF10_STD_TID | \
95 OFPUTIL_P_OF10_NXM_TID | \
96 OFPUTIL_P_OF12_OXM | \
100 /* Protocols to use for flow dumps, from most to least preferred. */
101 extern enum ofputil_protocol ofputil_flow_dump_protocols[];
102 extern size_t ofputil_n_flow_dump_protocols;
104 enum ofputil_protocol ofputil_protocol_from_ofp_version(enum ofp_version);
105 enum ofp_version ofputil_protocol_to_ofp_version(enum ofputil_protocol);
107 bool ofputil_protocol_is_valid(enum ofputil_protocol);
108 enum ofputil_protocol ofputil_protocol_set_tid(enum ofputil_protocol,
110 enum ofputil_protocol ofputil_protocol_to_base(enum ofputil_protocol);
111 enum ofputil_protocol ofputil_protocol_set_base(
112 enum ofputil_protocol cur, enum ofputil_protocol new_base);
114 const char *ofputil_protocol_to_string(enum ofputil_protocol);
115 char *ofputil_protocols_to_string(enum ofputil_protocol);
116 enum ofputil_protocol ofputil_protocols_from_string(const char *);
117 enum ofputil_protocol ofputil_usable_protocols(const struct match *);
119 void ofputil_format_version(struct ds *, enum ofp_version);
120 void ofputil_format_version_name(struct ds *, enum ofp_version);
122 /* A bitmap of version numbers
124 * Bit offsets correspond to ofp_version numbers which in turn correspond to
125 * wire-protocol numbers for Open Flow versions.. E.g. (1u << OFP11_VERSION)
126 * is the mask for Open Flow 1.1. If the bit for a version is set then it is
127 * allowed, otherwise it is disallowed. */
129 void ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap);
130 void ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap);
132 /* Bitmap of OpenFlow versions that Open vSwitch supports. */
133 #define OFPUTIL_SUPPORTED_VERSIONS \
134 ((1u << OFP10_VERSION) | (1u << OFP12_VERSION) | (1u << OFP13_VERSION))
136 /* Bitmap of OpenFlow versions to enable by default (a subset of
137 * OFPUTIL_SUPPORTED_VERSIONS). */
138 #define OFPUTIL_DEFAULT_VERSIONS (1u << OFP10_VERSION)
140 enum ofputil_protocol ofputil_protocols_from_string(const char *s);
142 const char *ofputil_version_to_string(enum ofp_version ofp_version);
143 uint32_t ofputil_versions_from_string(const char *s);
144 uint32_t ofputil_versions_from_strings(char ** const s, size_t count);
146 bool ofputil_decode_hello(const struct ofp_header *,
147 uint32_t *allowed_versions);
148 struct ofpbuf *ofputil_encode_hello(uint32_t version_bitmap);
150 struct ofpbuf *ofputil_encode_set_protocol(enum ofputil_protocol current,
151 enum ofputil_protocol want,
152 enum ofputil_protocol *next);
155 struct ofpbuf *ofputil_encode_nx_set_flow_format(enum nx_flow_format);
156 enum ofputil_protocol ofputil_nx_flow_format_to_protocol(enum nx_flow_format);
157 bool ofputil_nx_flow_format_is_valid(enum nx_flow_format);
158 const char *ofputil_nx_flow_format_to_string(enum nx_flow_format);
160 /* Work with ofp10_match. */
161 void ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *);
162 void ofputil_match_from_ofp10_match(const struct ofp10_match *,
164 void ofputil_normalize_match(struct match *);
165 void ofputil_normalize_match_quiet(struct match *);
166 void ofputil_match_to_ofp10_match(const struct match *, struct ofp10_match *);
168 /* Work with ofp11_match. */
169 enum ofperr ofputil_pull_ofp11_match(struct ofpbuf *, struct match *,
170 uint16_t *padded_match_len);
171 enum ofperr ofputil_match_from_ofp11_match(const struct ofp11_match *,
173 void ofputil_match_to_ofp11_match(const struct match *, struct ofp11_match *);
175 /* dl_type translation between OpenFlow and 'struct flow' format. */
176 ovs_be16 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type);
177 ovs_be16 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type);
180 bool ofputil_packet_in_format_is_valid(enum nx_packet_in_format);
181 int ofputil_packet_in_format_from_string(const char *);
182 const char *ofputil_packet_in_format_to_string(enum nx_packet_in_format);
183 struct ofpbuf *ofputil_make_set_packet_in_format(enum ofp_version,
184 enum nx_packet_in_format);
186 /* NXT_FLOW_MOD_TABLE_ID extension. */
187 struct ofpbuf *ofputil_make_flow_mod_table_id(bool flow_mod_table_id);
189 /* Protocol-independent flow_mod.
191 * The handling of cookies across multiple versions of OpenFlow is a bit
192 * confusing. A full description of Open vSwitch's cookie handling is
193 * in the DESIGN file. The following table shows the expected values of
194 * the cookie-related fields for the different flow_mod commands in
195 * OpenFlow 1.0 ("OF10") and NXM. "<used>" and "-" indicate a value
196 * that may be populated and an ignored field, respectively.
198 * cookie cookie_mask new_cookie
199 * ====== =========== ==========
200 * OF10 Add - 0 <used>
201 * OF10 Modify - 0 <used>
204 * NXM Modify <used> <used> <used>
205 * NXM Delete <used> <used> -
207 struct ofputil_flow_mod {
209 unsigned int priority;
210 ovs_be64 cookie; /* Cookie bits to match. */
211 ovs_be64 cookie_mask; /* 1-bit in each 'cookie' bit to match. */
212 ovs_be64 new_cookie; /* New cookie to install or -1. */
215 uint16_t idle_timeout;
216 uint16_t hard_timeout;
220 struct ofpact *ofpacts; /* Series of "struct ofpact"s. */
221 size_t ofpacts_len; /* Length of ofpacts, in bytes. */
224 enum ofperr ofputil_decode_flow_mod(struct ofputil_flow_mod *,
225 const struct ofp_header *,
226 enum ofputil_protocol,
227 struct ofpbuf *ofpacts);
228 struct ofpbuf *ofputil_encode_flow_mod(const struct ofputil_flow_mod *,
229 enum ofputil_protocol);
231 enum ofputil_protocol ofputil_flow_mod_usable_protocols(
232 const struct ofputil_flow_mod *fms, size_t n_fms);
234 /* Flow stats or aggregate stats request, independent of protocol. */
235 struct ofputil_flow_stats_request {
236 bool aggregate; /* Aggregate results? */
239 ovs_be64 cookie_mask;
244 enum ofperr ofputil_decode_flow_stats_request(
245 struct ofputil_flow_stats_request *, const struct ofp_header *);
246 struct ofpbuf *ofputil_encode_flow_stats_request(
247 const struct ofputil_flow_stats_request *, enum ofputil_protocol);
248 enum ofputil_protocol ofputil_flow_stats_request_usable_protocols(
249 const struct ofputil_flow_stats_request *);
251 /* Flow stats reply, independent of protocol. */
252 struct ofputil_flow_stats {
256 uint32_t duration_sec;
257 uint32_t duration_nsec;
259 uint16_t idle_timeout;
260 uint16_t hard_timeout;
261 int idle_age; /* Seconds since last packet, -1 if unknown. */
262 int hard_age; /* Seconds since last change, -1 if unknown. */
263 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
264 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
265 struct ofpact *ofpacts;
267 uint16_t flags; /* Added for OF 1.3 */
270 int ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *,
272 bool flow_age_extension,
273 struct ofpbuf *ofpacts);
274 void ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *,
275 struct list *replies);
277 /* Aggregate stats reply, independent of protocol. */
278 struct ofputil_aggregate_stats {
279 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
280 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
284 struct ofpbuf *ofputil_encode_aggregate_stats_reply(
285 const struct ofputil_aggregate_stats *stats,
286 const struct ofp_header *request);
287 enum ofperr ofputil_decode_aggregate_stats_reply(
288 struct ofputil_aggregate_stats *,
289 const struct ofp_header *reply);
291 /* Flow removed message, independent of protocol. */
292 struct ofputil_flow_removed {
296 uint8_t reason; /* One of OFPRR_*. */
297 uint8_t table_id; /* 255 if message didn't include table ID. */
298 uint32_t duration_sec;
299 uint32_t duration_nsec;
300 uint16_t idle_timeout;
301 uint16_t hard_timeout;
302 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
303 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
306 enum ofperr ofputil_decode_flow_removed(struct ofputil_flow_removed *,
307 const struct ofp_header *);
308 struct ofpbuf *ofputil_encode_flow_removed(const struct ofputil_flow_removed *,
309 enum ofputil_protocol);
311 /* Abstract packet-in message. */
312 struct ofputil_packet_in {
316 enum ofp_packet_in_reason reason; /* One of OFPR_*. */
317 uint16_t controller_id; /* Controller ID to send to. */
323 uint16_t total_len; /* Full length of frame. */
325 struct flow_metadata fmd; /* Metadata at creation time. */
328 enum ofperr ofputil_decode_packet_in(struct ofputil_packet_in *,
329 const struct ofp_header *);
330 struct ofpbuf *ofputil_encode_packet_in(const struct ofputil_packet_in *,
331 enum ofputil_protocol protocol,
332 enum nx_packet_in_format);
334 const char *ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason);
335 bool ofputil_packet_in_reason_from_string(const char *,
336 enum ofp_packet_in_reason *);
338 /* Abstract packet-out message.
340 * ofputil_decode_packet_out() will ensure that 'in_port' is a physical port
341 * (OFPP_MAX or less) or one of OFPP_LOCAL, OFPP_NONE, or OFPP_CONTROLLER. */
342 struct ofputil_packet_out {
343 const void *packet; /* Packet data, if buffer_id == UINT32_MAX. */
344 size_t packet_len; /* Length of packet data in bytes. */
345 uint32_t buffer_id; /* Buffer id or UINT32_MAX if no buffer. */
346 uint16_t in_port; /* Packet's input port. */
347 struct ofpact *ofpacts; /* Actions. */
348 size_t ofpacts_len; /* Size of ofpacts in bytes. */
351 enum ofperr ofputil_decode_packet_out(struct ofputil_packet_out *,
352 const struct ofp_header *,
353 struct ofpbuf *ofpacts);
354 struct ofpbuf *ofputil_encode_packet_out(const struct ofputil_packet_out *,
355 enum ofputil_protocol protocol);
357 enum ofputil_port_config {
358 /* OpenFlow 1.0 and 1.1 share these values for these port config bits. */
359 OFPUTIL_PC_PORT_DOWN = 1 << 0, /* Port is administratively down. */
360 OFPUTIL_PC_NO_RECV = 1 << 2, /* Drop all packets received by port. */
361 OFPUTIL_PC_NO_FWD = 1 << 5, /* Drop packets forwarded to port. */
362 OFPUTIL_PC_NO_PACKET_IN = 1 << 6, /* No send packet-in msgs for port. */
363 /* OpenFlow 1.0 only. */
364 OFPUTIL_PC_NO_STP = 1 << 1, /* No 802.1D spanning tree for port. */
365 OFPUTIL_PC_NO_RECV_STP = 1 << 3, /* Drop received 802.1D STP packets. */
366 OFPUTIL_PC_NO_FLOOD = 1 << 4, /* Do not include port when flooding. */
367 /* There are no OpenFlow 1.1-only bits. */
370 enum ofputil_port_state {
371 /* OpenFlow 1.0 and 1.1 share this values for these port state bits. */
372 OFPUTIL_PS_LINK_DOWN = 1 << 0, /* No physical link present. */
373 /* OpenFlow 1.1 only. */
374 OFPUTIL_PS_BLOCKED = 1 << 1, /* Port is blocked */
375 OFPUTIL_PS_LIVE = 1 << 2, /* Live for Fast Failover Group. */
376 /* OpenFlow 1.0 only. */
377 OFPUTIL_PS_STP_LISTEN = 0 << 8, /* Not learning or relaying frames. */
378 OFPUTIL_PS_STP_LEARN = 1 << 8, /* Learning but not relaying frames. */
379 OFPUTIL_PS_STP_FORWARD = 2 << 8, /* Learning and relaying frames. */
380 OFPUTIL_PS_STP_BLOCK = 3 << 8, /* Not part of spanning tree. */
381 OFPUTIL_PS_STP_MASK = 3 << 8 /* Bit mask for OFPPS10_STP_* values. */
384 /* Abstract ofp10_phy_port or ofp11_port. */
385 struct ofputil_phy_port {
387 uint8_t hw_addr[OFP_ETH_ALEN];
388 char name[OFP_MAX_PORT_NAME_LEN];
389 enum ofputil_port_config config;
390 enum ofputil_port_state state;
392 /* NETDEV_F_* feature bitmasks. */
393 enum netdev_features curr; /* Current features. */
394 enum netdev_features advertised; /* Features advertised by the port. */
395 enum netdev_features supported; /* Features supported by the port. */
396 enum netdev_features peer; /* Features advertised by peer. */
399 uint32_t curr_speed; /* Current speed, in kbps. */
400 uint32_t max_speed; /* Maximum supported speed, in kbps. */
403 enum ofputil_capabilities {
404 /* OpenFlow 1.0, 1.1, 1.2, and 1.3 share these capability values. */
405 OFPUTIL_C_FLOW_STATS = 1 << 0, /* Flow statistics. */
406 OFPUTIL_C_TABLE_STATS = 1 << 1, /* Table statistics. */
407 OFPUTIL_C_PORT_STATS = 1 << 2, /* Port statistics. */
408 OFPUTIL_C_IP_REASM = 1 << 5, /* Can reassemble IP fragments. */
409 OFPUTIL_C_QUEUE_STATS = 1 << 6, /* Queue statistics. */
411 /* OpenFlow 1.0 and 1.1 share this capability. */
412 OFPUTIL_C_ARP_MATCH_IP = 1 << 7, /* Match IP addresses in ARP pkts. */
414 /* OpenFlow 1.0 only. */
415 OFPUTIL_C_STP = 1 << 3, /* 802.1d spanning tree. */
417 /* OpenFlow 1.1, 1.2, and 1.3 share this capability. */
418 OFPUTIL_C_GROUP_STATS = 1 << 4, /* Group statistics. */
420 /* OpenFlow 1.2 and 1.3 share this capability */
421 OFPUTIL_C_PORT_BLOCKED = 1 << 8, /* Switch will block looping ports */
424 enum ofputil_action_bitmap {
425 OFPUTIL_A_OUTPUT = 1 << 0,
426 OFPUTIL_A_SET_VLAN_VID = 1 << 1,
427 OFPUTIL_A_SET_VLAN_PCP = 1 << 2,
428 OFPUTIL_A_STRIP_VLAN = 1 << 3,
429 OFPUTIL_A_SET_DL_SRC = 1 << 4,
430 OFPUTIL_A_SET_DL_DST = 1 << 5,
431 OFPUTIL_A_SET_NW_SRC = 1 << 6,
432 OFPUTIL_A_SET_NW_DST = 1 << 7,
433 OFPUTIL_A_SET_NW_ECN = 1 << 8,
434 OFPUTIL_A_SET_NW_TOS = 1 << 9,
435 OFPUTIL_A_SET_TP_SRC = 1 << 10,
436 OFPUTIL_A_SET_TP_DST = 1 << 11,
437 OFPUTIL_A_ENQUEUE = 1 << 12,
438 OFPUTIL_A_COPY_TTL_OUT = 1 << 13,
439 OFPUTIL_A_COPY_TTL_IN = 1 << 14,
440 OFPUTIL_A_SET_MPLS_LABEL = 1 << 15,
441 OFPUTIL_A_SET_MPLS_TC = 1 << 16,
442 OFPUTIL_A_SET_MPLS_TTL = 1 << 17,
443 OFPUTIL_A_DEC_MPLS_TTL = 1 << 18,
444 OFPUTIL_A_PUSH_VLAN = 1 << 19,
445 OFPUTIL_A_POP_VLAN = 1 << 20,
446 OFPUTIL_A_PUSH_MPLS = 1 << 21,
447 OFPUTIL_A_POP_MPLS = 1 << 22,
448 OFPUTIL_A_SET_QUEUE = 1 << 23,
449 OFPUTIL_A_GROUP = 1 << 24,
450 OFPUTIL_A_SET_NW_TTL = 1 << 25,
451 OFPUTIL_A_DEC_NW_TTL = 1 << 26,
452 OFPUTIL_A_SET_FIELD = 1 << 27,
455 /* Abstract ofp_switch_features. */
456 struct ofputil_switch_features {
457 uint64_t datapath_id; /* Datapath unique ID. */
458 uint32_t n_buffers; /* Max packets buffered at once. */
459 uint8_t n_tables; /* Number of tables supported by datapath. */
460 uint8_t auxiliary_id; /* Identify auxiliary connections */
461 enum ofputil_capabilities capabilities;
462 enum ofputil_action_bitmap actions;
465 enum ofperr ofputil_decode_switch_features(const struct ofp_header *,
466 struct ofputil_switch_features *,
469 struct ofpbuf *ofputil_encode_switch_features(
470 const struct ofputil_switch_features *, enum ofputil_protocol,
472 void ofputil_put_switch_features_port(const struct ofputil_phy_port *,
474 bool ofputil_switch_features_ports_trunc(struct ofpbuf *b);
476 /* phy_port helper functions. */
477 int ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *,
478 struct ofputil_phy_port *);
479 size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *);
481 /* Abstract ofp_port_status. */
482 struct ofputil_port_status {
483 enum ofp_port_reason reason;
484 struct ofputil_phy_port desc;
487 enum ofperr ofputil_decode_port_status(const struct ofp_header *,
488 struct ofputil_port_status *);
489 struct ofpbuf *ofputil_encode_port_status(const struct ofputil_port_status *,
490 enum ofputil_protocol);
492 /* Abstract ofp_port_mod. */
493 struct ofputil_port_mod {
495 uint8_t hw_addr[OFP_ETH_ALEN];
496 enum ofputil_port_config config;
497 enum ofputil_port_config mask;
498 enum netdev_features advertise;
501 enum ofperr ofputil_decode_port_mod(const struct ofp_header *,
502 struct ofputil_port_mod *);
503 struct ofpbuf *ofputil_encode_port_mod(const struct ofputil_port_mod *,
504 enum ofputil_protocol);
506 /* Abstract table stats.
508 * For now we use ofp12_table_stats as a superset of the other protocol
509 * versions' table stats. */
511 struct ofpbuf *ofputil_encode_table_stats_reply(
512 const struct ofp12_table_stats[], int n,
513 const struct ofp_header *request);
515 /* Abstract nx_flow_monitor_request. */
516 struct ofputil_flow_monitor_request {
518 enum nx_flow_monitor_flags flags;
524 int ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *,
526 void ofputil_append_flow_monitor_request(
527 const struct ofputil_flow_monitor_request *, struct ofpbuf *msg);
529 /* Abstract nx_flow_update. */
530 struct ofputil_flow_update {
531 enum nx_flow_update_event event;
533 /* Used only for NXFME_ADDED, NXFME_DELETED, NXFME_MODIFIED. */
534 enum ofp_flow_removed_reason reason;
535 uint16_t idle_timeout;
536 uint16_t hard_timeout;
541 struct ofpact *ofpacts;
544 /* Used only for NXFME_ABBREV. */
548 int ofputil_decode_flow_update(struct ofputil_flow_update *,
549 struct ofpbuf *msg, struct ofpbuf *ofpacts);
550 void ofputil_start_flow_update(struct list *replies);
551 void ofputil_append_flow_update(const struct ofputil_flow_update *,
552 struct list *replies);
554 /* Abstract nx_flow_monitor_cancel. */
555 uint32_t ofputil_decode_flow_monitor_cancel(const struct ofp_header *);
556 struct ofpbuf *ofputil_encode_flow_monitor_cancel(uint32_t id);
558 /* Encoding OpenFlow stats messages. */
559 void ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version,
560 const struct ofputil_phy_port *pp,
561 struct list *replies);
563 /* Encoding simple OpenFlow messages. */
564 struct ofpbuf *make_echo_request(enum ofp_version);
565 struct ofpbuf *make_echo_reply(const struct ofp_header *rq);
567 struct ofpbuf *ofputil_encode_barrier_request(enum ofp_version);
569 const char *ofputil_frag_handling_to_string(enum ofp_config_flags);
570 bool ofputil_frag_handling_from_string(const char *, enum ofp_config_flags *);
575 /* The type of an action.
577 * For each implemented OFPAT10_* and NXAST_* action type, there is a
578 * corresponding constant prefixed with OFPUTIL_, e.g.:
580 * OFPUTIL_OFPAT10_OUTPUT
581 * OFPUTIL_OFPAT10_SET_VLAN_VID
582 * OFPUTIL_OFPAT10_SET_VLAN_PCP
583 * OFPUTIL_OFPAT10_STRIP_VLAN
584 * OFPUTIL_OFPAT10_SET_DL_SRC
585 * OFPUTIL_OFPAT10_SET_DL_DST
586 * OFPUTIL_OFPAT10_SET_NW_SRC
587 * OFPUTIL_OFPAT10_SET_NW_DST
588 * OFPUTIL_OFPAT10_SET_NW_TOS
589 * OFPUTIL_OFPAT10_SET_TP_SRC
590 * OFPUTIL_OFPAT10_SET_TP_DST
591 * OFPUTIL_OFPAT10_ENQUEUE
592 * OFPUTIL_NXAST_RESUBMIT
593 * OFPUTIL_NXAST_SET_TUNNEL
594 * OFPUTIL_NXAST_SET_METADATA
595 * OFPUTIL_NXAST_SET_QUEUE
596 * OFPUTIL_NXAST_POP_QUEUE
597 * OFPUTIL_NXAST_REG_MOVE
598 * OFPUTIL_NXAST_REG_LOAD
600 * OFPUTIL_NXAST_SET_TUNNEL64
601 * OFPUTIL_NXAST_MULTIPATH
602 * OFPUTIL_NXAST_AUTOPATH
603 * OFPUTIL_NXAST_BUNDLE
604 * OFPUTIL_NXAST_BUNDLE_LOAD
605 * OFPUTIL_NXAST_RESUBMIT_TABLE
606 * OFPUTIL_NXAST_OUTPUT_REG
607 * OFPUTIL_NXAST_LEARN
608 * OFPUTIL_NXAST_DEC_TTL
609 * OFPUTIL_NXAST_FIN_TIMEOUT
611 * (The above list helps developers who want to "grep" for these definitions.)
613 enum OVS_PACKED_ENUM ofputil_action_code {
614 OFPUTIL_ACTION_INVALID,
615 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) OFPUTIL_##ENUM,
616 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) OFPUTIL_##ENUM,
617 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) OFPUTIL_##ENUM,
618 #include "ofp-util.def"
621 /* The number of values of "enum ofputil_action_code". */
623 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) + 1
624 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) + 1
625 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) + 1
626 OFPUTIL_N_ACTIONS = 1
627 #include "ofp-util.def"
630 int ofputil_action_code_from_name(const char *);
632 void *ofputil_put_action(enum ofputil_action_code, struct ofpbuf *buf);
634 /* For each OpenFlow action <ENUM> that has a corresponding action structure
635 * struct <STRUCT>, this defines two functions:
637 * void ofputil_init_<ENUM>(struct <STRUCT> *action);
639 * Initializes the parts of 'action' that identify it as having type <ENUM>
640 * and length 'sizeof *action' and zeros the rest. For actions that have
641 * variable length, the length used and cleared is that of struct <STRUCT>.
643 * struct <STRUCT> *ofputil_put_<ENUM>(struct ofpbuf *buf);
645 * Appends a new 'action', of length 'sizeof(struct <STRUCT>)', to 'buf',
646 * initializes it with ofputil_init_<ENUM>(), and returns it.
648 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
649 void ofputil_init_##ENUM(struct STRUCT *); \
650 struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
651 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
652 void ofputil_init_##ENUM(struct STRUCT *); \
653 struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
654 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
655 void ofputil_init_##ENUM(struct STRUCT *); \
656 struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
657 #include "ofp-util.def"
659 #define OFP_ACTION_ALIGN 8 /* Alignment of ofp_actions. */
661 enum ofperr validate_actions(const union ofp_action *, size_t n_actions,
662 const struct flow *, int max_ports);
663 bool action_outputs_to_port(const union ofp_action *, ovs_be16 port);
665 enum ofperr ofputil_pull_actions(struct ofpbuf *, unsigned int actions_len,
666 union ofp_action **, size_t *);
668 bool ofputil_actions_equal(const union ofp_action *a, size_t n_a,
669 const union ofp_action *b, size_t n_b);
670 union ofp_action *ofputil_actions_clone(const union ofp_action *, size_t n);
672 /* Handy utility for parsing flows and actions. */
673 bool ofputil_parse_key_value(char **stringp, char **keyp, char **valuep);
675 struct ofpbuf *ofputlil_dump_ports(enum ofp_version ofp_version, int16_t port);
677 struct ofputil_port_stats {
679 struct netdev_stats stats;
682 struct ofpbuf *ofputil_encode_dump_ports_request(enum ofp_version ofp_version,
684 void ofputil_append_port_stat(struct list *replies,
685 const struct ofputil_port_stats *ops);
686 size_t ofputil_count_port_stats(const struct ofp_header *);
687 int ofputil_decode_port_stats(struct ofputil_port_stats *, struct ofpbuf *msg);
688 enum ofperr ofputil_decode_port_stats_request(const struct ofp_header *request,
689 uint16_t *ofp10_port);
691 struct ofputil_queue_stats_request {
692 uint16_t port_no; /* OFPP_ANY means "all ports". */
697 ofputil_decode_queue_stats_request(const struct ofp_header *request,
698 struct ofputil_queue_stats_request *oqsr);
700 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
701 const struct ofputil_queue_stats_request *oqsr);
703 struct ofputil_queue_stats {
706 struct netdev_queue_stats stats;
709 size_t ofputil_count_queue_stats(const struct ofp_header *);
710 int ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg);
711 void ofputil_append_queue_stat(struct list *replies,
712 const struct ofputil_queue_stats *oqs);
714 #endif /* ofp-util.h */