2 * Copyright (c) 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.
18 #define OFP_ACTIONS_H 1
22 #include "meta-flow.h"
23 #include "ofp-errors.h"
25 #include "openflow/openflow.h"
26 #include "openflow/nicira-ext.h"
27 #include "openvswitch/types.h"
29 /* List of OVS abstracted actions.
31 * This macro is used directly only internally by this header, but the list is
32 * still of interest to developers.
34 * Each DEFINE_OFPACT invocation has the following parameters:
36 * 1. <ENUM>, used below in the enum definition of OFPACT_<ENUM>, and
39 * 2. <STRUCT> corresponding to a structure "struct <STRUCT>", that must be
40 * defined below. This structure must be an abstract definition of the
41 * action. Its first member must have type "struct ofpact" and name
42 * "ofpact". It may be fixed length or end with a flexible array member
43 * (e.g. "int member[];").
45 * 3. <MEMBER>, which has one of two possible values:
47 * - If "struct <STRUCT>" is fixed-length, it must be "ofpact".
49 * - If "struct <STRUCT>" is variable-length, it must be the name of the
50 * flexible array member.
54 DEFINE_OFPACT(OUTPUT, ofpact_output, ofpact) \
55 DEFINE_OFPACT(GROUP, ofpact_group, ofpact) \
56 DEFINE_OFPACT(CONTROLLER, ofpact_controller, ofpact) \
57 DEFINE_OFPACT(ENQUEUE, ofpact_enqueue, ofpact) \
58 DEFINE_OFPACT(OUTPUT_REG, ofpact_output_reg, ofpact) \
59 DEFINE_OFPACT(BUNDLE, ofpact_bundle, slaves) \
61 /* Header changes. */ \
62 DEFINE_OFPACT(SET_FIELD, ofpact_set_field, ofpact) \
63 DEFINE_OFPACT(SET_VLAN_VID, ofpact_vlan_vid, ofpact) \
64 DEFINE_OFPACT(SET_VLAN_PCP, ofpact_vlan_pcp, ofpact) \
65 DEFINE_OFPACT(STRIP_VLAN, ofpact_null, ofpact) \
66 DEFINE_OFPACT(PUSH_VLAN, ofpact_null, ofpact) \
67 DEFINE_OFPACT(SET_ETH_SRC, ofpact_mac, ofpact) \
68 DEFINE_OFPACT(SET_ETH_DST, ofpact_mac, ofpact) \
69 DEFINE_OFPACT(SET_IPV4_SRC, ofpact_ipv4, ofpact) \
70 DEFINE_OFPACT(SET_IPV4_DST, ofpact_ipv4, ofpact) \
71 DEFINE_OFPACT(SET_IP_DSCP, ofpact_dscp, ofpact) \
72 DEFINE_OFPACT(SET_IP_ECN, ofpact_ecn, ofpact) \
73 DEFINE_OFPACT(SET_IP_TTL, ofpact_ip_ttl, ofpact) \
74 DEFINE_OFPACT(SET_L4_SRC_PORT, ofpact_l4_port, ofpact) \
75 DEFINE_OFPACT(SET_L4_DST_PORT, ofpact_l4_port, ofpact) \
76 DEFINE_OFPACT(REG_MOVE, ofpact_reg_move, ofpact) \
77 DEFINE_OFPACT(REG_LOAD, ofpact_reg_load, ofpact) \
78 DEFINE_OFPACT(STACK_PUSH, ofpact_stack, ofpact) \
79 DEFINE_OFPACT(STACK_POP, ofpact_stack, ofpact) \
80 DEFINE_OFPACT(DEC_TTL, ofpact_cnt_ids, cnt_ids) \
81 DEFINE_OFPACT(SET_MPLS_TTL, ofpact_mpls_ttl, ofpact) \
82 DEFINE_OFPACT(DEC_MPLS_TTL, ofpact_null, ofpact) \
83 DEFINE_OFPACT(PUSH_MPLS, ofpact_push_mpls, ofpact) \
84 DEFINE_OFPACT(POP_MPLS, ofpact_pop_mpls, ofpact) \
87 DEFINE_OFPACT(SET_TUNNEL, ofpact_tunnel, ofpact) \
88 DEFINE_OFPACT(SET_QUEUE, ofpact_queue, ofpact) \
89 DEFINE_OFPACT(POP_QUEUE, ofpact_null, ofpact) \
90 DEFINE_OFPACT(FIN_TIMEOUT, ofpact_fin_timeout, ofpact) \
92 /* Flow table interaction. */ \
93 DEFINE_OFPACT(RESUBMIT, ofpact_resubmit, ofpact) \
94 DEFINE_OFPACT(LEARN, ofpact_learn, specs) \
97 DEFINE_OFPACT(MULTIPATH, ofpact_multipath, ofpact) \
100 DEFINE_OFPACT(NOTE, ofpact_note, data) \
101 DEFINE_OFPACT(EXIT, ofpact_null, ofpact) \
102 DEFINE_OFPACT(SAMPLE, ofpact_sample, ofpact) \
105 DEFINE_OFPACT(METER, ofpact_meter, ofpact) \
106 DEFINE_OFPACT(CLEAR_ACTIONS, ofpact_null, ofpact) \
107 DEFINE_OFPACT(WRITE_ACTIONS, ofpact_nest, ofpact) \
108 DEFINE_OFPACT(WRITE_METADATA, ofpact_metadata, ofpact) \
109 DEFINE_OFPACT(GOTO_TABLE, ofpact_goto_table, ofpact)
111 /* enum ofpact_type, with a member OFPACT_<ENUM> for each action. */
112 enum OVS_PACKED_ENUM ofpact_type {
113 #define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) OFPACT_##ENUM,
118 /* N_OFPACTS, the number of values of "enum ofpact_type". */
121 #define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) + 1
126 /* Header for an action.
128 * Each action is a structure "struct ofpact_*" that begins with "struct
129 * ofpact", usually followed by other data that describes the action. Actions
130 * are padded out to a multiple of OFPACT_ALIGNTO bytes in length.
132 * The 'compat' member is special:
134 * - Most "struct ofpact"s correspond to one particular kind of OpenFlow
135 * action, at least in a given OpenFlow version. For example,
136 * OFPACT_SET_VLAN_VID corresponds to OFPAT10_SET_VLAN_VID in OpenFlow
139 * For such actions, the 'compat' member is not meaningful and generally
142 * - A few "struct ofpact"s correspond to multiple OpenFlow actions. For
143 * example, OFPACT_SET_TUNNEL can be NXAST_SET_TUNNEL or
144 * NXAST_SET_TUNNEL64. In these cases, if the "struct ofpact" originated
145 * from OpenFlow, then we want to make sure that, if it gets translated
146 * back to OpenFlow later, it is translated back to the same action type.
147 * (Otherwise, we'd violate the promise made in DESIGN, in the "Action
148 * Reproduction" section.)
150 * For such actions, the 'compat' member should be the original action
151 * type. (If the action didn't originate from OpenFlow, then setting
152 * 'compat' to zero should be fine: code to translate the ofpact to
153 * OpenFlow must tolerate this case.)
156 enum ofpact_type type; /* OFPACT_*. */
157 enum ofputil_action_code compat; /* Original type when added, if any. */
158 uint16_t len; /* Length of the action, in bytes, including
159 * struct ofpact, excluding padding. */
163 /* Make sure that OVS_PACKED_ENUM really worked. */
164 BUILD_ASSERT_DECL(sizeof(struct ofpact) == 4);
168 #define OFPACT_ALIGNTO 8
169 #define OFPACT_ALIGN(SIZE) ROUND_UP(SIZE, OFPACT_ALIGNTO)
171 static inline struct ofpact *
172 ofpact_next(const struct ofpact *ofpact)
174 return (void *) ((uint8_t *) ofpact + OFPACT_ALIGN(ofpact->len));
177 static inline struct ofpact *
178 ofpact_end(const struct ofpact *ofpacts, size_t ofpacts_len)
180 return (void *) ((uint8_t *) ofpacts + ofpacts_len);
183 /* Assigns POS to each ofpact, in turn, in the OFPACTS_LEN bytes of ofpacts
184 * starting at OFPACTS. */
185 #define OFPACT_FOR_EACH(POS, OFPACTS, OFPACTS_LEN) \
186 for ((POS) = (OFPACTS); (POS) < ofpact_end(OFPACTS, OFPACTS_LEN); \
187 (POS) = ofpact_next(POS))
189 /* Action structure for each OFPACT_*. */
191 /* OFPACT_STRIP_VLAN, OFPACT_POP_QUEUE, OFPACT_EXIT, OFPACT_CLEAR_ACTIONS.
193 * Used for OFPAT10_STRIP_VLAN, NXAST_POP_QUEUE, NXAST_EXIT,
194 * OFPAT11_POP_VLAN, OFPIT11_CLEAR_ACTIONS.
196 * Action structure for actions that do not have any extra data beyond the
199 struct ofpact ofpact;
204 * Used for OFPAT10_OUTPUT. */
205 struct ofpact_output {
206 struct ofpact ofpact;
207 ofp_port_t port; /* Output port. */
208 uint16_t max_len; /* Max send len, for port OFPP_CONTROLLER. */
211 /* OFPACT_CONTROLLER.
213 * Used for NXAST_CONTROLLER. */
214 struct ofpact_controller {
215 struct ofpact ofpact;
216 uint16_t max_len; /* Maximum length to send to controller. */
217 uint16_t controller_id; /* Controller ID to send packet-in. */
218 enum ofp_packet_in_reason reason; /* Reason to put in packet-in. */
223 * Used for OFPAT10_ENQUEUE. */
224 struct ofpact_enqueue {
225 struct ofpact ofpact;
230 /* OFPACT_OUTPUT_REG.
232 * Used for NXAST_OUTPUT_REG. */
233 struct ofpact_output_reg {
234 struct ofpact ofpact;
235 struct mf_subfield src;
241 * Used for NXAST_BUNDLE. */
242 struct ofpact_bundle {
243 struct ofpact ofpact;
245 /* Slave choice algorithm to apply to hash value. */
246 enum nx_bd_algorithm algorithm;
248 /* What fields to hash and how. */
249 enum nx_hash_fields fields;
250 uint16_t basis; /* Universal hash parameter. */
252 struct mf_subfield dst;
254 /* Slaves for output. */
255 unsigned int n_slaves;
259 /* OFPACT_SET_VLAN_VID.
261 * We keep track if vlan was present at action validation time to avoid a
262 * PUSH_VLAN when translating to OpenFlow 1.1+.
264 * We also keep the originating OFPUTIL action code in ofpact.compat.
266 * Used for OFPAT10_SET_VLAN_VID and OFPAT11_SET_VLAN_VID. */
267 struct ofpact_vlan_vid {
268 struct ofpact ofpact;
269 uint16_t vlan_vid; /* VLAN VID in low 12 bits, 0 in other bits. */
270 bool push_vlan_if_needed; /* OF 1.0 semantics if true. */
271 bool flow_has_vlan; /* VLAN present at action validation time? */
274 /* OFPACT_SET_VLAN_PCP.
276 * We keep track if vlan was present at action validation time to avoid a
277 * PUSH_VLAN when translating to OpenFlow 1.1+.
279 * We also keep the originating OFPUTIL action code in ofpact.compat.
281 * Used for OFPAT10_SET_VLAN_PCP and OFPAT11_SET_VLAN_PCP. */
282 struct ofpact_vlan_pcp {
283 struct ofpact ofpact;
284 uint8_t vlan_pcp; /* VLAN PCP in low 3 bits, 0 in other bits. */
285 bool push_vlan_if_needed; /* OF 1.0 semantics if true. */
286 bool flow_has_vlan; /* VLAN present at action validation time? */
289 /* OFPACT_SET_ETH_SRC, OFPACT_SET_ETH_DST.
291 * Used for OFPAT10_SET_DL_SRC, OFPAT10_SET_DL_DST. */
293 struct ofpact ofpact;
294 uint8_t mac[ETH_ADDR_LEN];
297 /* OFPACT_SET_IPV4_SRC, OFPACT_SET_IPV4_DST.
299 * Used for OFPAT10_SET_NW_SRC, OFPAT10_SET_NW_DST. */
301 struct ofpact ofpact;
305 /* OFPACT_SET_IP_DSCP.
307 * Used for OFPAT10_SET_NW_TOS. */
309 struct ofpact ofpact;
310 uint8_t dscp; /* DSCP in high 6 bits, rest ignored. */
313 /* OFPACT_SET_IP_ECN.
315 * Used for OFPAT11_SET_NW_ECN. */
317 struct ofpact ofpact;
318 uint8_t ecn; /* ECN in low 2 bits, rest ignored. */
321 /* OFPACT_SET_IP_TTL.
323 * Used for OFPAT11_SET_NW_TTL. */
324 struct ofpact_ip_ttl {
325 struct ofpact ofpact;
329 /* OFPACT_SET_L4_SRC_PORT, OFPACT_SET_L4_DST_PORT.
331 * Used for OFPAT10_SET_TP_SRC, OFPAT10_SET_TP_DST. */
332 struct ofpact_l4_port {
333 struct ofpact ofpact;
334 uint16_t port; /* TCP, UDP or SCTP port number. */
335 uint8_t flow_ip_proto; /* IP proto from corresponding match, or 0 */
340 * Used for NXAST_REG_MOVE. */
341 struct ofpact_reg_move {
342 struct ofpact ofpact;
343 struct mf_subfield src;
344 struct mf_subfield dst;
347 /* OFPACT_STACK_PUSH.
349 * Used for NXAST_STACK_PUSH and NXAST_STACK_POP. */
350 struct ofpact_stack {
351 struct ofpact ofpact;
352 struct mf_subfield subfield;
357 * Used for NXAST_REG_LOAD. */
358 struct ofpact_reg_load {
359 struct ofpact ofpact;
360 struct mf_subfield dst;
361 union mf_subvalue subvalue; /* Least-significant bits are used. */
364 /* The position in the packet at which to insert an MPLS header.
366 * Used NXAST_PUSH_MPLS, OFPAT11_PUSH_MPLS. */
367 enum ofpact_mpls_position {
368 /* Add the MPLS LSE after the Ethernet header but before any VLAN tags.
369 * OpenFlow 1.3+ requires this behavior. */
370 OFPACT_MPLS_BEFORE_VLAN,
372 /* Add the MPLS LSE after the Ethernet header and any VLAN tags.
373 * OpenFlow 1.1 and 1.2 require this behavior. */
374 OFPACT_MPLS_AFTER_VLAN
379 * Used for OFPAT12_SET_FIELD. */
380 struct ofpact_set_field {
381 struct ofpact ofpact;
382 const struct mf_field *field;
383 bool flow_has_vlan; /* VLAN present at action validation time. */
384 union mf_value value;
387 /* OFPACT_PUSH_VLAN/MPLS/PBB
389 * Used for NXAST_PUSH_MPLS, OFPAT11_PUSH_MPLS. */
390 struct ofpact_push_mpls {
391 struct ofpact ofpact;
393 enum ofpact_mpls_position position;
398 * Used for NXAST_POP_MPLS, OFPAT11_POP_MPLS.. */
399 struct ofpact_pop_mpls {
400 struct ofpact ofpact;
404 /* OFPACT_SET_TUNNEL.
406 * Used for NXAST_SET_TUNNEL, NXAST_SET_TUNNEL64. */
407 struct ofpact_tunnel {
408 struct ofpact ofpact;
414 * Used for NXAST_SET_QUEUE. */
415 struct ofpact_queue {
416 struct ofpact ofpact;
420 /* OFPACT_FIN_TIMEOUT.
422 * Used for NXAST_FIN_TIMEOUT. */
423 struct ofpact_fin_timeout {
424 struct ofpact ofpact;
425 uint16_t fin_idle_timeout;
426 uint16_t fin_hard_timeout;
429 /* OFPACT_WRITE_METADATA.
431 * Used for NXAST_WRITE_METADATA. */
432 struct ofpact_metadata {
433 struct ofpact ofpact;
440 * Used for OFPIT13_METER. */
441 struct ofpact_meter {
442 struct ofpact ofpact;
446 /* OFPACT_WRITE_ACTIONS.
448 * Used for OFPIT11_WRITE_ACTIONS. */
450 struct ofpact ofpact;
451 uint8_t pad[OFPACT_ALIGN(sizeof(struct ofpact)) - sizeof(struct ofpact)];
452 struct ofpact actions[];
454 BUILD_ASSERT_DECL(offsetof(struct ofpact_nest, actions) == OFPACT_ALIGNTO);
457 ofpact_nest_get_action_len(const struct ofpact_nest *on)
459 return on->ofpact.len - offsetof(struct ofpact_nest, actions);
462 void ofpacts_execute_action_set(struct ofpbuf *action_list,
463 const struct ofpbuf *action_set);
467 * Used for NXAST_RESUBMIT, NXAST_RESUBMIT_TABLE. */
468 struct ofpact_resubmit {
469 struct ofpact ofpact;
474 /* Part of struct ofpact_learn, below. */
475 struct ofpact_learn_spec {
476 int n_bits; /* Number of bits in source and dest. */
478 int src_type; /* One of NX_LEARN_SRC_*. */
479 struct mf_subfield src; /* NX_LEARN_SRC_FIELD only. */
480 union mf_subvalue src_imm; /* NX_LEARN_SRC_IMMEDIATE only. */
482 int dst_type; /* One of NX_LEARN_DST_*. */
483 struct mf_subfield dst; /* NX_LEARN_DST_MATCH, NX_LEARN_DST_LOAD only. */
488 * Used for NXAST_LEARN. */
489 struct ofpact_learn {
490 struct ofpact ofpact;
492 uint16_t idle_timeout; /* Idle time before discarding (seconds). */
493 uint16_t hard_timeout; /* Max time before discarding (seconds). */
494 uint16_t priority; /* Priority level of flow entry. */
495 uint64_t cookie; /* Cookie for new flow. */
496 enum ofputil_flow_mod_flags flags;
497 uint8_t table_id; /* Table to insert flow entry. */
498 uint16_t fin_idle_timeout; /* Idle timeout after FIN, if nonzero. */
499 uint16_t fin_hard_timeout; /* Hard timeout after FIN, if nonzero. */
501 unsigned int n_specs;
502 struct ofpact_learn_spec specs[];
507 * Used for NXAST_MULTIPATH. */
508 struct ofpact_multipath {
509 struct ofpact ofpact;
511 /* What fields to hash and how. */
512 enum nx_hash_fields fields;
513 uint16_t basis; /* Universal hash parameter. */
515 /* Multipath link choice algorithm to apply to hash value. */
516 enum nx_mp_algorithm algorithm;
517 uint16_t max_link; /* Number of output links, minus 1. */
518 uint32_t arg; /* Algorithm-specific argument. */
520 /* Where to store the result. */
521 struct mf_subfield dst;
526 * Used for NXAST_NOTE. */
528 struct ofpact ofpact;
535 * Used for NXAST_SAMPLE. */
536 struct ofpact_sample {
537 struct ofpact ofpact;
538 uint16_t probability; // Always >0.
539 uint32_t collector_set_id;
540 uint32_t obs_domain_id;
541 uint32_t obs_point_id;
546 * Used for OFPAT11_DEC_NW_TTL, NXAST_DEC_TTL and NXAST_DEC_TTL_CNT_IDS. */
547 struct ofpact_cnt_ids {
548 struct ofpact ofpact;
550 /* Controller ids. */
551 unsigned int n_controllers;
555 /* OFPACT_SET_MPLS_TTL.
557 * Used for NXAST_SET_MPLS_TTL */
558 struct ofpact_mpls_ttl {
559 struct ofpact ofpact;
566 * Used for OFPIT11_GOTO_TABLE */
567 struct ofpact_goto_table {
568 struct ofpact ofpact;
574 * Used for OFPAT11_GROUP. */
575 struct ofpact_group {
576 struct ofpact ofpact;
580 /* Converting OpenFlow to ofpacts. */
581 enum ofperr ofpacts_pull_openflow_actions(struct ofpbuf *openflow,
582 unsigned int actions_len,
583 enum ofp_version version,
584 struct ofpbuf *ofpacts);
585 enum ofperr ofpacts_pull_openflow_instructions(struct ofpbuf *openflow,
586 unsigned int instructions_len,
587 enum ofp_version version,
588 struct ofpbuf *ofpacts);
589 enum ofperr ofpacts_check(struct ofpact[], size_t ofpacts_len,
590 struct flow *, ofp_port_t max_ports,
591 uint8_t table_id, bool enforce_consistency);
592 enum ofperr ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len);
593 enum ofperr ofpact_check_output_port(ofp_port_t port, ofp_port_t max_ports);
595 /* Converting ofpacts to OpenFlow. */
596 size_t ofpacts_put_openflow_actions(const struct ofpact[], size_t ofpacts_len,
597 struct ofpbuf *openflow, enum ofp_version);
598 void ofpacts_put_openflow_instructions(const struct ofpact[],
600 struct ofpbuf *openflow,
601 enum ofp_version ofp_version);
603 /* Working with ofpacts. */
604 bool ofpacts_output_to_port(const struct ofpact[], size_t ofpacts_len,
606 bool ofpacts_output_to_group(const struct ofpact[], size_t ofpacts_len,
608 bool ofpacts_equal(const struct ofpact a[], size_t a_len,
609 const struct ofpact b[], size_t b_len);
610 uint32_t ofpacts_get_meter(const struct ofpact[], size_t ofpacts_len);
612 /* Formatting ofpacts.
614 * (For parsing ofpacts, see ofp-parse.h.) */
615 void ofpacts_format(const struct ofpact[], size_t ofpacts_len, struct ds *);
617 /* Internal use by the helpers below. */
618 void ofpact_init(struct ofpact *, enum ofpact_type, size_t len);
619 void *ofpact_put(struct ofpbuf *, enum ofpact_type, size_t len);
621 /* For each OFPACT_<ENUM> with a corresponding struct <STRUCT>, this defines
622 * the following commonly useful functions:
624 * struct <STRUCT> *ofpact_put_<ENUM>(struct ofpbuf *ofpacts);
626 * Appends a new 'ofpact', of length OFPACT_<ENUM>_RAW_SIZE, to 'ofpacts',
627 * initializes it with ofpact_init_<ENUM>(), and returns it. Also sets
628 * 'ofpacts->l2' to the returned action.
630 * After using this function to add a variable-length action, add the
631 * elements of the flexible array (e.g. with ofpbuf_put()), then use
632 * ofpact_update_len() to update the length embedded into the action.
633 * (Keep in mind the need to refresh the structure from 'ofpacts->l2' after
634 * adding data to 'ofpacts'.)
636 * struct <STRUCT> *ofpact_get_<ENUM>(const struct ofpact *ofpact);
638 * Returns 'ofpact' cast to "struct <STRUCT> *". 'ofpact->type' must be
641 * as well as the following more rarely useful definitions:
643 * void ofpact_init_<ENUM>(struct <STRUCT> *ofpact);
645 * Initializes the parts of 'ofpact' that identify it as having type
646 * OFPACT_<ENUM> and length OFPACT_<ENUM>_RAW_SIZE and zeros the rest.
650 * The size of the action structure. For a fixed-length action, this is
651 * sizeof(struct <STRUCT>). For a variable-length action, this is the
652 * offset to the variable-length part.
656 * An integer constant, the value of OFPACT_<ENUM>_RAW_SIZE rounded up to a
657 * multiple of OFPACT_ALIGNTO.
659 #define DEFINE_OFPACT(ENUM, STRUCT, MEMBER) \
660 BUILD_ASSERT_DECL(offsetof(struct STRUCT, ofpact) == 0); \
662 enum { OFPACT_##ENUM##_RAW_SIZE \
663 = (offsetof(struct STRUCT, MEMBER) \
664 ? offsetof(struct STRUCT, MEMBER) \
665 : sizeof(struct STRUCT)) }; \
667 enum { OFPACT_##ENUM##_SIZE \
668 = ROUND_UP(OFPACT_##ENUM##_RAW_SIZE, OFPACT_ALIGNTO) }; \
670 static inline struct STRUCT * \
671 ofpact_get_##ENUM(const struct ofpact *ofpact) \
673 ovs_assert(ofpact->type == OFPACT_##ENUM); \
674 return ALIGNED_CAST(struct STRUCT *, ofpact); \
677 static inline struct STRUCT * \
678 ofpact_put_##ENUM(struct ofpbuf *ofpacts) \
680 return ofpact_put(ofpacts, OFPACT_##ENUM, \
681 OFPACT_##ENUM##_RAW_SIZE); \
685 ofpact_init_##ENUM(struct STRUCT *ofpact) \
687 ofpact_init(&ofpact->ofpact, OFPACT_##ENUM, \
688 OFPACT_##ENUM##_RAW_SIZE); \
693 /* Functions to use after adding ofpacts to a buffer. */
694 void ofpact_update_len(struct ofpbuf *, struct ofpact *);
695 void ofpact_pad(struct ofpbuf *);
697 /* OpenFlow 1.1 instructions.
698 * The order is sorted in execution order. Not in the value of OFPIT11_xxx.
699 * It is enforced on parser from text string.
701 #define OVS_INSTRUCTIONS \
702 DEFINE_INST(OFPIT13_METER, \
703 ofp13_instruction_meter, false, \
706 DEFINE_INST(OFPIT11_APPLY_ACTIONS, \
707 ofp11_instruction_actions, true, \
710 DEFINE_INST(OFPIT11_CLEAR_ACTIONS, \
711 ofp11_instruction, false, \
714 DEFINE_INST(OFPIT11_WRITE_ACTIONS, \
715 ofp11_instruction_actions, true, \
718 DEFINE_INST(OFPIT11_WRITE_METADATA, \
719 ofp11_instruction_write_metadata, false, \
722 DEFINE_INST(OFPIT11_GOTO_TABLE, \
723 ofp11_instruction_goto_table, false, \
726 enum ovs_instruction_type {
727 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) OVSINST_##ENUM,
733 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) + 1
734 N_OVS_INSTRUCTIONS = OVS_INSTRUCTIONS
738 const char *ovs_instruction_name_from_type(enum ovs_instruction_type type);
739 int ovs_instruction_type_from_name(const char *name);
740 enum ovs_instruction_type ovs_instruction_type_from_ofpact_type(
742 #endif /* ofp-actions.h */