2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 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.
23 #include "classifier.h"
28 #include "openflow/nicira-ext.h"
29 #include "openvswitch/types.h"
30 #include "type-props.h"
36 enum ofperr ofputil_port_from_ofp11(ovs_be32 ofp11_port,
37 ofp_port_t *ofp10_port);
38 ovs_be32 ofputil_port_to_ofp11(ofp_port_t ofp10_port);
40 enum ofperr ofputil_check_output_port(ofp_port_t ofp_port,
41 ofp_port_t max_ports);
42 bool ofputil_port_from_string(const char *, ofp_port_t *portp);
43 void ofputil_format_port(ofp_port_t port, struct ds *);
44 void ofputil_port_to_string(ofp_port_t, char namebuf[OFP_MAX_PORT_NAME_LEN],
48 enum { MAX_GROUP_NAME_LEN = INT_STRLEN(uint32_t) };
49 bool ofputil_group_from_string(const char *, uint32_t *group_id);
50 void ofputil_format_group(uint32_t group_id, struct ds *);
51 void ofputil_group_to_string(uint32_t group_id,
52 char namebuf[MAX_GROUP_NAME_LEN + 1],
55 /* Converting OFPFW10_NW_SRC_MASK and OFPFW10_NW_DST_MASK wildcard bit counts
56 * to and from IP bitmasks. */
57 ovs_be32 ofputil_wcbits_to_netmask(int wcbits);
58 int ofputil_netmask_to_wcbits(ovs_be32 netmask);
62 * A "protocol" is an OpenFlow version plus, for some OpenFlow versions,
63 * a bit extra about the flow match format in use.
65 * These are arranged from most portable to least portable, or alternatively
66 * from least powerful to most powerful. Protocols earlier on the list are
67 * more likely to be understood for the purpose of making requests, but
68 * protocol later on the list are more likely to accurately describe a flow
71 * On any given OpenFlow connection, a single protocol is in effect at any
72 * given time. These values use separate bits only because that makes it easy
73 * to test whether a particular protocol is within a given set of protocols and
74 * to implement set union and intersection.
76 enum ofputil_protocol {
77 /* OpenFlow 1.0 protocols.
79 * The "STD" protocols use the standard OpenFlow 1.0 flow format.
80 * The "NXM" protocols use the Nicira Extensible Match (NXM) flow format.
82 * The protocols with "TID" mean that the nx_flow_mod_table_id Nicira
83 * extension has been enabled. The other protocols have it disabled.
85 #define OFPUTIL_P_NONE 0
86 OFPUTIL_P_OF10_STD = 1 << 0,
87 OFPUTIL_P_OF10_STD_TID = 1 << 1,
88 OFPUTIL_P_OF10_NXM = 1 << 2,
89 OFPUTIL_P_OF10_NXM_TID = 1 << 3,
90 #define OFPUTIL_P_OF10_STD_ANY (OFPUTIL_P_OF10_STD | OFPUTIL_P_OF10_STD_TID)
91 #define OFPUTIL_P_OF10_NXM_ANY (OFPUTIL_P_OF10_NXM | OFPUTIL_P_OF10_NXM_TID)
93 /* OpenFlow 1.1 protocol.
95 * We only support the standard OpenFlow 1.1 flow format.
97 * OpenFlow 1.1 always operates with an equivalent of the
98 * nx_flow_mod_table_id Nicira extension enabled, so there is no "TID"
100 OFPUTIL_P_OF11_STD = 1 << 4,
102 /* OpenFlow 1.2+ protocols (only one variant each).
104 * These use the standard OpenFlow Extensible Match (OXM) flow format.
106 * OpenFlow 1.2+ always operates with an equivalent of the
107 * nx_flow_mod_table_id Nicira extension enabled, so there is no "TID"
109 OFPUTIL_P_OF12_OXM = 1 << 5,
110 OFPUTIL_P_OF13_OXM = 1 << 6,
111 #define OFPUTIL_P_ANY_OXM (OFPUTIL_P_OF12_OXM | OFPUTIL_P_OF13_OXM)
113 #define OFPUTIL_P_NXM_OF11_UP (OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF11_STD | \
116 #define OFPUTIL_P_NXM_OXM_ANY (OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_ANY_OXM)
118 #define OFPUTIL_P_OF11_UP (OFPUTIL_P_OF11_STD | OFPUTIL_P_ANY_OXM)
120 #define OFPUTIL_P_OF12_UP (OFPUTIL_P_ANY_OXM)
122 #define OFPUTIL_P_OF13_UP (OFPUTIL_P_OF13_OXM)
125 #define OFPUTIL_P_ANY ((1 << 7) - 1)
127 /* Protocols in which a specific table may be specified in flow_mods. */
128 #define OFPUTIL_P_TID (OFPUTIL_P_OF10_STD_TID | \
129 OFPUTIL_P_OF10_NXM_TID | \
130 OFPUTIL_P_OF11_STD | \
134 /* Protocols to use for flow dumps, from most to least preferred. */
135 extern enum ofputil_protocol ofputil_flow_dump_protocols[];
136 extern size_t ofputil_n_flow_dump_protocols;
138 enum ofputil_protocol ofputil_protocol_from_ofp_version(enum ofp_version);
139 enum ofputil_protocol ofputil_protocols_from_ofp_version(enum ofp_version);
140 enum ofp_version ofputil_protocol_to_ofp_version(enum ofputil_protocol);
142 bool ofputil_protocol_is_valid(enum ofputil_protocol);
143 enum ofputil_protocol ofputil_protocol_set_tid(enum ofputil_protocol,
145 enum ofputil_protocol ofputil_protocol_to_base(enum ofputil_protocol);
146 enum ofputil_protocol ofputil_protocol_set_base(
147 enum ofputil_protocol cur, enum ofputil_protocol new_base);
149 const char *ofputil_protocol_to_string(enum ofputil_protocol);
150 char *ofputil_protocols_to_string(enum ofputil_protocol);
151 enum ofputil_protocol ofputil_protocols_from_string(const char *);
153 void ofputil_format_version(struct ds *, enum ofp_version);
154 void ofputil_format_version_name(struct ds *, enum ofp_version);
156 /* A bitmap of version numbers
158 * Bit offsets correspond to ofp_version numbers which in turn correspond to
159 * wire-protocol numbers for Open Flow versions.. E.g. (1u << OFP11_VERSION)
160 * is the mask for Open Flow 1.1. If the bit for a version is set then it is
161 * allowed, otherwise it is disallowed. */
163 void ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap);
164 void ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap);
166 uint32_t ofputil_protocols_to_version_bitmap(enum ofputil_protocol);
167 enum ofputil_protocol ofputil_protocols_from_version_bitmap(uint32_t bitmap);
169 /* Bitmap of OpenFlow versions that Open vSwitch supports. */
170 #define OFPUTIL_SUPPORTED_VERSIONS \
171 ((1u << OFP10_VERSION) | (1u << OFP12_VERSION) | (1u << OFP13_VERSION))
173 /* Bitmap of OpenFlow versions to enable by default (a subset of
174 * OFPUTIL_SUPPORTED_VERSIONS). */
175 #define OFPUTIL_DEFAULT_VERSIONS (1u << OFP10_VERSION)
177 enum ofputil_protocol ofputil_protocols_from_string(const char *s);
179 const char *ofputil_version_to_string(enum ofp_version ofp_version);
180 uint32_t ofputil_versions_from_string(const char *s);
181 uint32_t ofputil_versions_from_strings(char ** const s, size_t count);
183 bool ofputil_decode_hello(const struct ofp_header *,
184 uint32_t *allowed_versions);
185 struct ofpbuf *ofputil_encode_hello(uint32_t version_bitmap);
187 struct ofpbuf *ofputil_encode_set_protocol(enum ofputil_protocol current,
188 enum ofputil_protocol want,
189 enum ofputil_protocol *next);
192 struct ofpbuf *ofputil_encode_nx_set_flow_format(enum nx_flow_format);
193 enum ofputil_protocol ofputil_nx_flow_format_to_protocol(enum nx_flow_format);
194 bool ofputil_nx_flow_format_is_valid(enum nx_flow_format);
195 const char *ofputil_nx_flow_format_to_string(enum nx_flow_format);
197 /* Work with ofp10_match. */
198 void ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *);
199 void ofputil_match_from_ofp10_match(const struct ofp10_match *,
201 void ofputil_normalize_match(struct match *);
202 void ofputil_normalize_match_quiet(struct match *);
203 void ofputil_match_to_ofp10_match(const struct match *, struct ofp10_match *);
205 /* Work with ofp11_match. */
206 enum ofperr ofputil_pull_ofp11_match(struct ofpbuf *, struct match *,
207 uint16_t *padded_match_len);
208 enum ofperr ofputil_match_from_ofp11_match(const struct ofp11_match *,
210 int ofputil_put_ofp11_match(struct ofpbuf *, const struct match *,
211 enum ofputil_protocol);
212 void ofputil_match_to_ofp11_match(const struct match *, struct ofp11_match *);
213 int ofputil_match_typical_len(enum ofputil_protocol);
215 /* dl_type translation between OpenFlow and 'struct flow' format. */
216 ovs_be16 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type);
217 ovs_be16 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type);
220 bool ofputil_packet_in_format_is_valid(enum nx_packet_in_format);
221 int ofputil_packet_in_format_from_string(const char *);
222 const char *ofputil_packet_in_format_to_string(enum nx_packet_in_format);
223 struct ofpbuf *ofputil_make_set_packet_in_format(enum ofp_version,
224 enum nx_packet_in_format);
226 /* NXT_FLOW_MOD_TABLE_ID extension. */
227 struct ofpbuf *ofputil_make_flow_mod_table_id(bool flow_mod_table_id);
229 /* Protocol-independent flow_mod flags. */
230 enum ofputil_flow_mod_flags {
231 /* Flags that are maintained with a flow as part of its state.
233 * (OFPUTIL_FF_EMERG would be here too, if OVS supported it.) */
234 OFPUTIL_FF_SEND_FLOW_REM = 1 << 0, /* All versions. */
235 OFPUTIL_FF_NO_PKT_COUNTS = 1 << 1, /* OpenFlow 1.3+. */
236 OFPUTIL_FF_NO_BYT_COUNTS = 1 << 2, /* OpenFlow 1.3+. */
237 #define OFPUTIL_FF_STATE (OFPUTIL_FF_SEND_FLOW_REM \
238 | OFPUTIL_FF_NO_PKT_COUNTS \
239 | OFPUTIL_FF_NO_BYT_COUNTS)
241 /* Flags that affect flow_mod behavior but are not part of flow state. */
242 OFPUTIL_FF_CHECK_OVERLAP = 1 << 3, /* All versions. */
243 OFPUTIL_FF_EMERG = 1 << 4, /* OpenFlow 1.0 only. */
244 OFPUTIL_FF_RESET_COUNTS = 1 << 5, /* OpenFlow 1.2+. */
247 /* Protocol-independent flow_mod.
249 * The handling of cookies across multiple versions of OpenFlow is a bit
250 * confusing. See DESIGN for the details. */
251 struct ofputil_flow_mod {
252 struct list list_node; /* For queuing flow_mods. */
255 unsigned int priority;
257 /* Cookie matching. The flow_mod affects only flows that have cookies that
258 * bitwise match 'cookie' bits in positions where 'cookie_mask has 1-bits.
260 * 'cookie_mask' should be zero for OFPFC_ADD flow_mods. */
261 ovs_be64 cookie; /* Cookie bits to match. */
262 ovs_be64 cookie_mask; /* 1-bit in each 'cookie' bit to match. */
266 * OFPFC_ADD uses 'new_cookie' as the new flow's cookie. 'new_cookie'
267 * should not be UINT64_MAX.
269 * OFPFC_MODIFY and OFPFC_MODIFY_STRICT have two cases:
271 * - If one or more matching flows exist and 'modify_cookie' is true,
272 * then the flow_mod changes the existing flows' cookies to
273 * 'new_cookie'. 'new_cookie' should not be UINT64_MAX.
275 * - If no matching flow exists, 'new_cookie' is not UINT64_MAX, and
276 * 'cookie_mask' is 0, then the flow_mod adds a new flow with
277 * 'new_cookie' as its cookie.
279 ovs_be64 new_cookie; /* New cookie to install or UINT64_MAX. */
280 bool modify_cookie; /* Set cookie of existing flow to 'new_cookie'? */
284 uint16_t idle_timeout;
285 uint16_t hard_timeout;
289 enum ofputil_flow_mod_flags flags;
290 struct ofpact *ofpacts; /* Series of "struct ofpact"s. */
291 size_t ofpacts_len; /* Length of ofpacts, in bytes. */
294 enum ofperr ofputil_decode_flow_mod(struct ofputil_flow_mod *,
295 const struct ofp_header *,
296 enum ofputil_protocol,
297 struct ofpbuf *ofpacts);
298 struct ofpbuf *ofputil_encode_flow_mod(const struct ofputil_flow_mod *,
299 enum ofputil_protocol);
301 /* Flow stats or aggregate stats request, independent of protocol. */
302 struct ofputil_flow_stats_request {
303 bool aggregate; /* Aggregate results? */
306 ovs_be64 cookie_mask;
312 enum ofperr ofputil_decode_flow_stats_request(
313 struct ofputil_flow_stats_request *, const struct ofp_header *);
314 struct ofpbuf *ofputil_encode_flow_stats_request(
315 const struct ofputil_flow_stats_request *, enum ofputil_protocol);
317 /* Flow stats reply, independent of protocol. */
318 struct ofputil_flow_stats {
322 uint32_t duration_sec;
323 uint32_t duration_nsec;
325 uint16_t idle_timeout;
326 uint16_t hard_timeout;
327 int idle_age; /* Seconds since last packet, -1 if unknown. */
328 int hard_age; /* Seconds since last change, -1 if unknown. */
329 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
330 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
331 struct ofpact *ofpacts;
333 enum ofputil_flow_mod_flags flags;
336 int ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *,
338 bool flow_age_extension,
339 struct ofpbuf *ofpacts);
340 void ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *,
341 struct list *replies);
343 /* Aggregate stats reply, independent of protocol. */
344 struct ofputil_aggregate_stats {
345 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
346 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
350 struct ofpbuf *ofputil_encode_aggregate_stats_reply(
351 const struct ofputil_aggregate_stats *stats,
352 const struct ofp_header *request);
353 enum ofperr ofputil_decode_aggregate_stats_reply(
354 struct ofputil_aggregate_stats *,
355 const struct ofp_header *reply);
357 /* Flow removed message, independent of protocol. */
358 struct ofputil_flow_removed {
362 uint8_t reason; /* One of OFPRR_*. */
363 uint8_t table_id; /* 255 if message didn't include table ID. */
364 uint32_t duration_sec;
365 uint32_t duration_nsec;
366 uint16_t idle_timeout;
367 uint16_t hard_timeout;
368 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
369 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
372 enum ofperr ofputil_decode_flow_removed(struct ofputil_flow_removed *,
373 const struct ofp_header *);
374 struct ofpbuf *ofputil_encode_flow_removed(const struct ofputil_flow_removed *,
375 enum ofputil_protocol);
377 /* Abstract packet-in message. */
378 struct ofputil_packet_in {
382 enum ofp_packet_in_reason reason; /* One of OFPR_*. */
383 uint16_t controller_id; /* Controller ID to send to. */
389 uint16_t total_len; /* Full length of frame. */
391 struct flow_metadata fmd; /* Metadata at creation time. */
394 enum ofperr ofputil_decode_packet_in(struct ofputil_packet_in *,
395 const struct ofp_header *);
396 struct ofpbuf *ofputil_encode_packet_in(const struct ofputil_packet_in *,
397 enum ofputil_protocol protocol,
398 enum nx_packet_in_format);
400 enum { OFPUTIL_PACKET_IN_REASON_BUFSIZE = INT_STRLEN(int) + 1 };
401 const char *ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason,
404 bool ofputil_packet_in_reason_from_string(const char *,
405 enum ofp_packet_in_reason *);
407 /* Abstract packet-out message.
409 * ofputil_decode_packet_out() will ensure that 'in_port' is a physical port
410 * (OFPP_MAX or less) or one of OFPP_LOCAL, OFPP_NONE, or OFPP_CONTROLLER. */
411 struct ofputil_packet_out {
412 const void *packet; /* Packet data, if buffer_id == UINT32_MAX. */
413 size_t packet_len; /* Length of packet data in bytes. */
414 uint32_t buffer_id; /* Buffer id or UINT32_MAX if no buffer. */
415 ofp_port_t in_port; /* Packet's input port. */
416 struct ofpact *ofpacts; /* Actions. */
417 size_t ofpacts_len; /* Size of ofpacts in bytes. */
420 enum ofperr ofputil_decode_packet_out(struct ofputil_packet_out *,
421 const struct ofp_header *,
422 struct ofpbuf *ofpacts);
423 struct ofpbuf *ofputil_encode_packet_out(const struct ofputil_packet_out *,
424 enum ofputil_protocol protocol);
426 enum ofputil_port_config {
427 /* OpenFlow 1.0 and 1.1 share these values for these port config bits. */
428 OFPUTIL_PC_PORT_DOWN = 1 << 0, /* Port is administratively down. */
429 OFPUTIL_PC_NO_RECV = 1 << 2, /* Drop all packets received by port. */
430 OFPUTIL_PC_NO_FWD = 1 << 5, /* Drop packets forwarded to port. */
431 OFPUTIL_PC_NO_PACKET_IN = 1 << 6, /* No send packet-in msgs for port. */
432 /* OpenFlow 1.0 only. */
433 OFPUTIL_PC_NO_STP = 1 << 1, /* No 802.1D spanning tree for port. */
434 OFPUTIL_PC_NO_RECV_STP = 1 << 3, /* Drop received 802.1D STP packets. */
435 OFPUTIL_PC_NO_FLOOD = 1 << 4, /* Do not include port when flooding. */
436 /* There are no OpenFlow 1.1-only bits. */
439 enum ofputil_port_state {
440 /* OpenFlow 1.0 and 1.1 share this values for these port state bits. */
441 OFPUTIL_PS_LINK_DOWN = 1 << 0, /* No physical link present. */
442 /* OpenFlow 1.1 only. */
443 OFPUTIL_PS_BLOCKED = 1 << 1, /* Port is blocked */
444 OFPUTIL_PS_LIVE = 1 << 2, /* Live for Fast Failover Group. */
445 /* OpenFlow 1.0 only. */
446 OFPUTIL_PS_STP_LISTEN = 0 << 8, /* Not learning or relaying frames. */
447 OFPUTIL_PS_STP_LEARN = 1 << 8, /* Learning but not relaying frames. */
448 OFPUTIL_PS_STP_FORWARD = 2 << 8, /* Learning and relaying frames. */
449 OFPUTIL_PS_STP_BLOCK = 3 << 8, /* Not part of spanning tree. */
450 OFPUTIL_PS_STP_MASK = 3 << 8 /* Bit mask for OFPPS10_STP_* values. */
453 /* Abstract ofp10_phy_port or ofp11_port. */
454 struct ofputil_phy_port {
456 uint8_t hw_addr[OFP_ETH_ALEN];
457 char name[OFP_MAX_PORT_NAME_LEN];
458 enum ofputil_port_config config;
459 enum ofputil_port_state state;
461 /* NETDEV_F_* feature bitmasks. */
462 enum netdev_features curr; /* Current features. */
463 enum netdev_features advertised; /* Features advertised by the port. */
464 enum netdev_features supported; /* Features supported by the port. */
465 enum netdev_features peer; /* Features advertised by peer. */
468 uint32_t curr_speed; /* Current speed, in kbps. */
469 uint32_t max_speed; /* Maximum supported speed, in kbps. */
472 enum ofputil_capabilities {
473 /* OpenFlow 1.0, 1.1, 1.2, and 1.3 share these capability values. */
474 OFPUTIL_C_FLOW_STATS = 1 << 0, /* Flow statistics. */
475 OFPUTIL_C_TABLE_STATS = 1 << 1, /* Table statistics. */
476 OFPUTIL_C_PORT_STATS = 1 << 2, /* Port statistics. */
477 OFPUTIL_C_IP_REASM = 1 << 5, /* Can reassemble IP fragments. */
478 OFPUTIL_C_QUEUE_STATS = 1 << 6, /* Queue statistics. */
480 /* OpenFlow 1.0 and 1.1 share this capability. */
481 OFPUTIL_C_ARP_MATCH_IP = 1 << 7, /* Match IP addresses in ARP pkts. */
483 /* OpenFlow 1.0 only. */
484 OFPUTIL_C_STP = 1 << 3, /* 802.1d spanning tree. */
486 /* OpenFlow 1.1, 1.2, and 1.3 share this capability. */
487 OFPUTIL_C_GROUP_STATS = 1 << 4, /* Group statistics. */
489 /* OpenFlow 1.2 and 1.3 share this capability */
490 OFPUTIL_C_PORT_BLOCKED = 1 << 8, /* Switch will block looping ports */
493 enum ofputil_action_bitmap {
494 OFPUTIL_A_OUTPUT = 1 << 0,
495 OFPUTIL_A_SET_VLAN_VID = 1 << 1,
496 OFPUTIL_A_SET_VLAN_PCP = 1 << 2,
497 OFPUTIL_A_STRIP_VLAN = 1 << 3,
498 OFPUTIL_A_SET_DL_SRC = 1 << 4,
499 OFPUTIL_A_SET_DL_DST = 1 << 5,
500 OFPUTIL_A_SET_NW_SRC = 1 << 6,
501 OFPUTIL_A_SET_NW_DST = 1 << 7,
502 OFPUTIL_A_SET_NW_ECN = 1 << 8,
503 OFPUTIL_A_SET_NW_TOS = 1 << 9,
504 OFPUTIL_A_SET_TP_SRC = 1 << 10,
505 OFPUTIL_A_SET_TP_DST = 1 << 11,
506 OFPUTIL_A_ENQUEUE = 1 << 12,
507 OFPUTIL_A_COPY_TTL_OUT = 1 << 13,
508 OFPUTIL_A_COPY_TTL_IN = 1 << 14,
509 OFPUTIL_A_SET_MPLS_LABEL = 1 << 15,
510 OFPUTIL_A_SET_MPLS_TC = 1 << 16,
511 OFPUTIL_A_SET_MPLS_TTL = 1 << 17,
512 OFPUTIL_A_DEC_MPLS_TTL = 1 << 18,
513 OFPUTIL_A_PUSH_VLAN = 1 << 19,
514 OFPUTIL_A_POP_VLAN = 1 << 20,
515 OFPUTIL_A_PUSH_MPLS = 1 << 21,
516 OFPUTIL_A_POP_MPLS = 1 << 22,
517 OFPUTIL_A_SET_QUEUE = 1 << 23,
518 OFPUTIL_A_GROUP = 1 << 24,
519 OFPUTIL_A_SET_NW_TTL = 1 << 25,
520 OFPUTIL_A_DEC_NW_TTL = 1 << 26,
521 OFPUTIL_A_SET_FIELD = 1 << 27,
524 /* Abstract ofp_switch_features. */
525 struct ofputil_switch_features {
526 uint64_t datapath_id; /* Datapath unique ID. */
527 uint32_t n_buffers; /* Max packets buffered at once. */
528 uint8_t n_tables; /* Number of tables supported by datapath. */
529 uint8_t auxiliary_id; /* Identify auxiliary connections */
530 enum ofputil_capabilities capabilities;
531 enum ofputil_action_bitmap actions;
534 enum ofperr ofputil_decode_switch_features(const struct ofp_header *,
535 struct ofputil_switch_features *,
538 struct ofpbuf *ofputil_encode_switch_features(
539 const struct ofputil_switch_features *, enum ofputil_protocol,
541 void ofputil_put_switch_features_port(const struct ofputil_phy_port *,
543 bool ofputil_switch_features_ports_trunc(struct ofpbuf *b);
545 /* phy_port helper functions. */
546 int ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *,
547 struct ofputil_phy_port *);
548 size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *);
550 /* Abstract ofp_port_status. */
551 struct ofputil_port_status {
552 enum ofp_port_reason reason;
553 struct ofputil_phy_port desc;
556 enum ofperr ofputil_decode_port_status(const struct ofp_header *,
557 struct ofputil_port_status *);
558 struct ofpbuf *ofputil_encode_port_status(const struct ofputil_port_status *,
559 enum ofputil_protocol);
561 /* Abstract ofp_port_mod. */
562 struct ofputil_port_mod {
564 uint8_t hw_addr[OFP_ETH_ALEN];
565 enum ofputil_port_config config;
566 enum ofputil_port_config mask;
567 enum netdev_features advertise;
570 enum ofperr ofputil_decode_port_mod(const struct ofp_header *,
571 struct ofputil_port_mod *);
572 struct ofpbuf *ofputil_encode_port_mod(const struct ofputil_port_mod *,
573 enum ofputil_protocol);
575 /* Abstract ofp_table_mod. */
576 struct ofputil_table_mod {
577 uint8_t table_id; /* ID of the table, 0xff indicates all tables. */
581 enum ofperr ofputil_decode_table_mod(const struct ofp_header *,
582 struct ofputil_table_mod *);
583 struct ofpbuf *ofputil_encode_table_mod(const struct ofputil_table_mod *,
584 enum ofputil_protocol);
586 /* Meter band configuration for all supported band types. */
587 struct ofputil_meter_band {
589 uint8_t prec_level; /* Non-zero if type == OFPMBT_DSCP_REMARK. */
594 struct ofputil_meter_band_stats {
595 uint64_t packet_count;
599 struct ofputil_meter_config {
603 struct ofputil_meter_band *bands;
606 /* Abstract ofp_meter_mod. */
607 struct ofputil_meter_mod {
609 struct ofputil_meter_config meter;
612 struct ofputil_meter_stats {
615 uint64_t packet_in_count;
616 uint64_t byte_in_count;
617 uint32_t duration_sec;
618 uint32_t duration_nsec;
620 struct ofputil_meter_band_stats *bands;
623 struct ofputil_meter_features {
624 uint32_t max_meters; /* Maximum number of meters. */
625 uint32_t band_types; /* Can support max 32 band types. */
626 uint32_t capabilities; /* Supported flags. */
631 enum ofperr ofputil_decode_meter_mod(const struct ofp_header *,
632 struct ofputil_meter_mod *,
633 struct ofpbuf *bands);
634 struct ofpbuf *ofputil_encode_meter_mod(enum ofp_version,
635 const struct ofputil_meter_mod *);
637 void ofputil_decode_meter_features(const struct ofp_header *,
638 struct ofputil_meter_features *);
639 struct ofpbuf *ofputil_encode_meter_features_reply(const struct
640 ofputil_meter_features *,
641 const struct ofp_header *
643 void ofputil_decode_meter_request(const struct ofp_header *,
646 void ofputil_append_meter_config(struct list *replies,
647 const struct ofputil_meter_config *);
649 void ofputil_append_meter_stats(struct list *replies,
650 const struct ofputil_meter_stats *);
652 enum ofputil_meter_request_type {
653 OFPUTIL_METER_FEATURES,
654 OFPUTIL_METER_CONFIG,
658 struct ofpbuf *ofputil_encode_meter_request(enum ofp_version,
659 enum ofputil_meter_request_type,
662 int ofputil_decode_meter_stats(struct ofpbuf *,
663 struct ofputil_meter_stats *,
664 struct ofpbuf *bands);
666 int ofputil_decode_meter_config(struct ofpbuf *,
667 struct ofputil_meter_config *,
668 struct ofpbuf *bands);
670 /* Type for meter_id in ofproto provider interface, UINT32_MAX if invalid. */
671 typedef struct { uint32_t uint32; } ofproto_meter_id;
673 /* Abstract ofp_role_request and reply. */
674 struct ofputil_role_request {
675 enum ofp12_controller_role role;
676 bool have_generation_id;
677 uint64_t generation_id;
680 enum ofperr ofputil_decode_role_message(const struct ofp_header *,
681 struct ofputil_role_request *);
682 struct ofpbuf *ofputil_encode_role_reply(const struct ofp_header *,
683 const struct ofputil_role_request *);
685 /* Abstract table stats.
687 * For now we use ofp12_table_stats as a superset of the other protocol
688 * versions' table stats. */
690 struct ofpbuf *ofputil_encode_table_stats_reply(
691 const struct ofp12_table_stats[], int n,
692 const struct ofp_header *request);
694 /* Abstract nx_flow_monitor_request. */
695 struct ofputil_flow_monitor_request {
697 enum nx_flow_monitor_flags flags;
703 int ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *,
705 void ofputil_append_flow_monitor_request(
706 const struct ofputil_flow_monitor_request *, struct ofpbuf *msg);
708 /* Abstract nx_flow_update. */
709 struct ofputil_flow_update {
710 enum nx_flow_update_event event;
712 /* Used only for NXFME_ADDED, NXFME_DELETED, NXFME_MODIFIED. */
713 enum ofp_flow_removed_reason reason;
714 uint16_t idle_timeout;
715 uint16_t hard_timeout;
720 struct ofpact *ofpacts;
723 /* Used only for NXFME_ABBREV. */
727 int ofputil_decode_flow_update(struct ofputil_flow_update *,
728 struct ofpbuf *msg, struct ofpbuf *ofpacts);
729 void ofputil_start_flow_update(struct list *replies);
730 void ofputil_append_flow_update(const struct ofputil_flow_update *,
731 struct list *replies);
733 /* Abstract nx_flow_monitor_cancel. */
734 uint32_t ofputil_decode_flow_monitor_cancel(const struct ofp_header *);
735 struct ofpbuf *ofputil_encode_flow_monitor_cancel(uint32_t id);
737 /* Encoding OpenFlow stats messages. */
738 void ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version,
739 const struct ofputil_phy_port *pp,
740 struct list *replies);
742 /* Encoding simple OpenFlow messages. */
743 struct ofpbuf *make_echo_request(enum ofp_version);
744 struct ofpbuf *make_echo_reply(const struct ofp_header *rq);
746 struct ofpbuf *ofputil_encode_barrier_request(enum ofp_version);
748 const char *ofputil_frag_handling_to_string(enum ofp_config_flags);
749 bool ofputil_frag_handling_from_string(const char *, enum ofp_config_flags *);
754 /* The type of an action.
756 * For each implemented OFPAT10_* and NXAST_* action type, there is a
757 * corresponding constant prefixed with OFPUTIL_, e.g.:
759 * OFPUTIL_OFPAT10_OUTPUT
760 * OFPUTIL_OFPAT10_SET_VLAN_VID
761 * OFPUTIL_OFPAT10_SET_VLAN_PCP
762 * OFPUTIL_OFPAT10_STRIP_VLAN
763 * OFPUTIL_OFPAT10_SET_DL_SRC
764 * OFPUTIL_OFPAT10_SET_DL_DST
765 * OFPUTIL_OFPAT10_SET_NW_SRC
766 * OFPUTIL_OFPAT10_SET_NW_DST
767 * OFPUTIL_OFPAT10_SET_NW_TOS
768 * OFPUTIL_OFPAT10_SET_TP_SRC
769 * OFPUTIL_OFPAT10_SET_TP_DST
770 * OFPUTIL_OFPAT10_ENQUEUE
771 * OFPUTIL_NXAST_RESUBMIT
772 * OFPUTIL_NXAST_SET_TUNNEL
773 * OFPUTIL_NXAST_SET_METADATA
774 * OFPUTIL_NXAST_SET_QUEUE
775 * OFPUTIL_NXAST_POP_QUEUE
776 * OFPUTIL_NXAST_REG_MOVE
777 * OFPUTIL_NXAST_REG_LOAD
779 * OFPUTIL_NXAST_SET_TUNNEL64
780 * OFPUTIL_NXAST_MULTIPATH
781 * OFPUTIL_NXAST_BUNDLE
782 * OFPUTIL_NXAST_BUNDLE_LOAD
783 * OFPUTIL_NXAST_RESUBMIT_TABLE
784 * OFPUTIL_NXAST_OUTPUT_REG
785 * OFPUTIL_NXAST_LEARN
786 * OFPUTIL_NXAST_DEC_TTL
787 * OFPUTIL_NXAST_FIN_TIMEOUT
789 * (The above list helps developers who want to "grep" for these definitions.)
791 enum OVS_PACKED_ENUM ofputil_action_code {
792 OFPUTIL_ACTION_INVALID,
793 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) OFPUTIL_##ENUM,
794 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) OFPUTIL_##ENUM,
795 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) OFPUTIL_##ENUM,
796 #include "ofp-util.def"
799 /* The number of values of "enum ofputil_action_code". */
801 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) + 1
802 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) + 1
803 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) + 1
804 OFPUTIL_N_ACTIONS = 1
805 #include "ofp-util.def"
808 int ofputil_action_code_from_name(const char *);
810 void *ofputil_put_action(enum ofputil_action_code, struct ofpbuf *buf);
812 /* For each OpenFlow action <ENUM> that has a corresponding action structure
813 * struct <STRUCT>, this defines two functions:
815 * void ofputil_init_<ENUM>(struct <STRUCT> *action);
817 * Initializes the parts of 'action' that identify it as having type <ENUM>
818 * and length 'sizeof *action' and zeros the rest. For actions that have
819 * variable length, the length used and cleared is that of struct <STRUCT>.
821 * struct <STRUCT> *ofputil_put_<ENUM>(struct ofpbuf *buf);
823 * Appends a new 'action', of length 'sizeof(struct <STRUCT>)', to 'buf',
824 * initializes it with ofputil_init_<ENUM>(), and returns it.
826 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
827 void ofputil_init_##ENUM(struct STRUCT *); \
828 struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
829 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
830 void ofputil_init_##ENUM(struct STRUCT *); \
831 struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
832 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
833 void ofputil_init_##ENUM(struct STRUCT *); \
834 struct STRUCT *ofputil_put_##ENUM(struct ofpbuf *);
835 #include "ofp-util.def"
837 #define OFP_ACTION_ALIGN 8 /* Alignment of ofp_actions. */
839 bool action_outputs_to_port(const union ofp_action *, ovs_be16 port);
841 enum ofperr ofputil_pull_actions(struct ofpbuf *, unsigned int actions_len,
842 union ofp_action **, size_t *);
844 bool ofputil_actions_equal(const union ofp_action *a, size_t n_a,
845 const union ofp_action *b, size_t n_b);
846 union ofp_action *ofputil_actions_clone(const union ofp_action *, size_t n);
848 /* Handy utility for parsing flows and actions. */
849 bool ofputil_parse_key_value(char **stringp, char **keyp, char **valuep);
851 struct ofputil_port_stats {
853 struct netdev_stats stats;
854 uint32_t duration_sec; /* UINT32_MAX if unknown. */
855 uint32_t duration_nsec;
858 struct ofpbuf *ofputil_encode_dump_ports_request(enum ofp_version ofp_version,
860 void ofputil_append_port_stat(struct list *replies,
861 const struct ofputil_port_stats *ops);
862 size_t ofputil_count_port_stats(const struct ofp_header *);
863 int ofputil_decode_port_stats(struct ofputil_port_stats *, struct ofpbuf *msg);
864 enum ofperr ofputil_decode_port_stats_request(const struct ofp_header *request,
865 ofp_port_t *ofp10_port);
867 struct ofputil_queue_stats_request {
868 ofp_port_t port_no; /* OFPP_ANY means "all ports". */
873 ofputil_decode_queue_stats_request(const struct ofp_header *request,
874 struct ofputil_queue_stats_request *oqsr);
876 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
877 const struct ofputil_queue_stats_request *oqsr);
879 struct ofputil_queue_stats {
883 /* Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
888 /* UINT32_MAX if unknown. */
889 uint32_t duration_sec;
890 uint32_t duration_nsec;
893 size_t ofputil_count_queue_stats(const struct ofp_header *);
894 int ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg);
895 void ofputil_append_queue_stat(struct list *replies,
896 const struct ofputil_queue_stats *oqs);
898 /* Bucket for use in groups. */
899 struct ofputil_bucket {
900 struct list list_node;
901 uint16_t weight; /* Relative weight, for "select" groups. */
902 ofp_port_t watch_port; /* Port whose state affects whether this bucket
903 * is live. Only required for fast failover
905 uint32_t watch_group; /* Group whose state affects whether this
906 * bucket is live. Only required for fast
907 * failover groups. */
908 struct ofpact *ofpacts; /* Series of "struct ofpact"s. */
909 size_t ofpacts_len; /* Length of ofpacts, in bytes. */
912 /* Protocol-independent group_mod. */
913 struct ofputil_group_mod {
914 uint16_t command; /* One of OFPGC11_*. */
915 uint8_t type; /* One of OFPGT11_*. */
916 uint32_t group_id; /* Group identifier. */
917 struct list buckets; /* Contains "struct ofputil_bucket"s. */
920 struct bucket_counter {
921 uint64_t packet_count; /* Number of packets processed by bucket. */
922 uint64_t byte_count; /* Number of bytes processed by bucket. */
925 /* Group stats reply, independent of protocol. */
926 struct ofputil_group_stats {
927 uint32_t group_id; /* Group identifier. */
929 uint64_t packet_count; /* Packet count, UINT64_MAX if unknown. */
930 uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
931 uint32_t duration_sec; /* UINT32_MAX if unknown. */
932 uint32_t duration_nsec;
934 struct bucket_counter *bucket_stats;
937 /* Group features reply, independent of protocol. */
938 struct ofputil_group_features {
939 uint32_t types; /* Bitmap of OFPGT_* values supported. */
940 uint32_t capabilities; /* Bitmap of OFPGFC12_* capability supported. */
941 uint32_t max_groups[4]; /* Maximum number of groups for each type. */
942 uint32_t actions[4]; /* Bitmaps of OFPAT_* that are supported. */
945 /* Group desc reply, independent of protocol. */
946 struct ofputil_group_desc {
947 uint8_t type; /* One of OFPGT_*. */
948 uint32_t group_id; /* Group identifier. */
949 struct list buckets; /* Contains "struct ofputil_bucket"s. */
952 void ofputil_bucket_list_destroy(struct list *buckets);
954 struct ofpbuf *ofputil_encode_group_stats_request(enum ofp_version,
956 enum ofperr ofputil_decode_group_stats_request(
957 const struct ofp_header *request, uint32_t *group_id);
958 void ofputil_append_group_stats(struct list *replies,
959 const struct ofputil_group_stats *);
960 struct ofpbuf *ofputil_encode_group_features_request(enum ofp_version);
961 struct ofpbuf *ofputil_encode_group_features_reply(
962 const struct ofputil_group_features *, const struct ofp_header *request);
963 void ofputil_decode_group_features_reply(const struct ofp_header *,
964 struct ofputil_group_features *);
965 struct ofpbuf *ofputil_encode_group_mod(enum ofp_version ofp_version,
966 const struct ofputil_group_mod *gm);
968 enum ofperr ofputil_decode_group_mod(const struct ofp_header *,
969 struct ofputil_group_mod *);
971 int ofputil_decode_group_stats_reply(struct ofpbuf *,
972 struct ofputil_group_stats *);
974 int ofputil_decode_group_desc_reply(struct ofputil_group_desc *,
975 struct ofpbuf *, enum ofp_version);
977 void ofputil_append_group_desc_reply(const struct ofputil_group_desc *,
978 struct list *buckets,
979 struct list *replies);
980 struct ofpbuf *ofputil_encode_group_desc_request(enum ofp_version);
982 #endif /* ofp-util.h */