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.
18 #include "ofp-actions.h"
20 #include "byte-order.h"
22 #include "dynamic-string.h"
24 #include "meta-flow.h"
25 #include "multipath.h"
32 VLOG_DEFINE_THIS_MODULE(ofp_actions);
34 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
36 /* Converting OpenFlow 1.0 to ofpacts. */
39 output_from_openflow10(const struct ofp10_action_output *oao,
42 struct ofpact_output *output;
44 output = ofpact_put_OUTPUT(out);
45 output->port = u16_to_ofp(ntohs(oao->port));
46 output->max_len = ntohs(oao->max_len);
48 return ofputil_check_output_port(output->port, OFPP_MAX);
52 enqueue_from_openflow10(const struct ofp10_action_enqueue *oae,
55 struct ofpact_enqueue *enqueue;
57 enqueue = ofpact_put_ENQUEUE(out);
58 enqueue->port = u16_to_ofp(ntohs(oae->port));
59 enqueue->queue = ntohl(oae->queue_id);
60 if (ofp_to_u16(enqueue->port) >= ofp_to_u16(OFPP_MAX)
61 && enqueue->port != OFPP_IN_PORT
62 && enqueue->port != OFPP_LOCAL) {
63 return OFPERR_OFPBAC_BAD_OUT_PORT;
69 resubmit_from_openflow(const struct nx_action_resubmit *nar,
72 struct ofpact_resubmit *resubmit;
74 resubmit = ofpact_put_RESUBMIT(out);
75 resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT;
76 resubmit->in_port = u16_to_ofp(ntohs(nar->in_port));
77 resubmit->table_id = 0xff;
81 resubmit_table_from_openflow(const struct nx_action_resubmit *nar,
84 struct ofpact_resubmit *resubmit;
86 if (nar->pad[0] || nar->pad[1] || nar->pad[2]) {
87 return OFPERR_OFPBAC_BAD_ARGUMENT;
90 resubmit = ofpact_put_RESUBMIT(out);
91 resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT_TABLE;
92 resubmit->in_port = u16_to_ofp(ntohs(nar->in_port));
93 resubmit->table_id = nar->table;
98 output_reg_from_openflow(const struct nx_action_output_reg *naor,
101 struct ofpact_output_reg *output_reg;
103 if (!is_all_zeros(naor->zero, sizeof naor->zero)) {
104 return OFPERR_OFPBAC_BAD_ARGUMENT;
107 output_reg = ofpact_put_OUTPUT_REG(out);
108 output_reg->src.field = mf_from_nxm_header(ntohl(naor->src));
109 output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits);
110 output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits);
111 output_reg->max_len = ntohs(naor->max_len);
113 return mf_check_src(&output_reg->src, NULL);
117 fin_timeout_from_openflow(const struct nx_action_fin_timeout *naft,
120 struct ofpact_fin_timeout *oft;
122 oft = ofpact_put_FIN_TIMEOUT(out);
123 oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout);
124 oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout);
128 controller_from_openflow(const struct nx_action_controller *nac,
131 struct ofpact_controller *oc;
133 oc = ofpact_put_CONTROLLER(out);
134 oc->max_len = ntohs(nac->max_len);
135 oc->controller_id = ntohs(nac->controller_id);
136 oc->reason = nac->reason;
140 metadata_from_nxast(const struct nx_action_write_metadata *nawm,
143 struct ofpact_metadata *om;
145 if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) {
146 return OFPERR_NXBRC_MUST_BE_ZERO;
149 om = ofpact_put_WRITE_METADATA(out);
150 om->metadata = nawm->metadata;
151 om->mask = nawm->mask;
157 note_from_openflow(const struct nx_action_note *nan, struct ofpbuf *out)
159 struct ofpact_note *note;
162 length = ntohs(nan->len) - offsetof(struct nx_action_note, note);
163 note = ofpact_put(out, OFPACT_NOTE,
164 offsetof(struct ofpact_note, data) + length);
165 note->length = length;
166 memcpy(note->data, nan->note, length);
170 dec_ttl_from_openflow(struct ofpbuf *out, enum ofputil_action_code compat)
173 struct ofpact_cnt_ids *ids;
174 enum ofperr error = 0;
176 ids = ofpact_put_DEC_TTL(out);
177 ids->ofpact.compat = compat;
178 ids->n_controllers = 1;
179 ofpbuf_put(out, &id, sizeof id);
181 ofpact_update_len(out, &ids->ofpact);
186 dec_ttl_cnt_ids_from_openflow(const struct nx_action_cnt_ids *nac_ids,
189 struct ofpact_cnt_ids *ids;
193 ids = ofpact_put_DEC_TTL(out);
194 ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS;
195 ids->n_controllers = ntohs(nac_ids->n_controllers);
196 ids_size = ntohs(nac_ids->len) - sizeof *nac_ids;
198 if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) {
199 return OFPERR_NXBRC_MUST_BE_ZERO;
202 if (ids_size < ids->n_controllers * sizeof(ovs_be16)) {
203 VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %zu bytes "
204 "allocated for controller ids. %zu bytes are required for "
205 "%"PRIu16" controllers.", ids_size,
206 ids->n_controllers * sizeof(ovs_be16), ids->n_controllers);
207 return OFPERR_OFPBAC_BAD_LEN;
210 for (i = 0; i < ids->n_controllers; i++) {
211 uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]);
212 ofpbuf_put(out, &id, sizeof id);
216 ofpact_update_len(out, &ids->ofpact);
222 sample_from_openflow(const struct nx_action_sample *nas,
225 struct ofpact_sample *sample;
227 sample = ofpact_put_SAMPLE(out);
228 sample->probability = ntohs(nas->probability);
229 sample->collector_set_id = ntohl(nas->collector_set_id);
230 sample->obs_domain_id = ntohl(nas->obs_domain_id);
231 sample->obs_point_id = ntohl(nas->obs_point_id);
233 if (sample->probability == 0) {
234 return OFPERR_OFPBAC_BAD_ARGUMENT;
241 decode_nxast_action(const union ofp_action *a, enum ofputil_action_code *code)
243 const struct nx_action_header *nah = (const struct nx_action_header *) a;
244 uint16_t len = ntohs(a->header.len);
246 if (len < sizeof(struct nx_action_header)) {
247 return OFPERR_OFPBAC_BAD_LEN;
248 } else if (a->vendor.vendor != CONSTANT_HTONL(NX_VENDOR_ID)) {
249 return OFPERR_OFPBAC_BAD_VENDOR;
252 switch (nah->subtype) {
253 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
254 case CONSTANT_HTONS(ENUM): \
256 ? len >= sizeof(struct STRUCT) \
257 : len == sizeof(struct STRUCT)) { \
258 *code = OFPUTIL_##ENUM; \
261 return OFPERR_OFPBAC_BAD_LEN; \
264 #include "ofp-util.def"
266 case CONSTANT_HTONS(NXAST_SNAT__OBSOLETE):
267 case CONSTANT_HTONS(NXAST_DROP_SPOOFED_ARP__OBSOLETE):
269 return OFPERR_OFPBAC_BAD_TYPE;
273 /* Parses 'a' to determine its type. On success stores the correct type into
274 * '*code' and returns 0. On failure returns an OFPERR_* error code and
275 * '*code' is indeterminate.
277 * The caller must have already verified that 'a''s length is potentially
278 * correct (that is, a->header.len is nonzero and a multiple of sizeof(union
279 * ofp_action) and no longer than the amount of space allocated to 'a').
281 * This function verifies that 'a''s length is correct for the type of action
282 * that it represents. */
284 decode_openflow10_action(const union ofp_action *a,
285 enum ofputil_action_code *code)
288 case CONSTANT_HTONS(OFPAT10_VENDOR):
289 return decode_nxast_action(a, code);
291 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
292 case CONSTANT_HTONS(ENUM): \
293 if (a->header.len == htons(sizeof(struct STRUCT))) { \
294 *code = OFPUTIL_##ENUM; \
297 return OFPERR_OFPBAC_BAD_LEN; \
300 #include "ofp-util.def"
303 return OFPERR_OFPBAC_BAD_TYPE;
308 ofpact_from_nxast(const union ofp_action *a, enum ofputil_action_code code,
311 const struct nx_action_resubmit *nar;
312 const struct nx_action_set_tunnel *nast;
313 const struct nx_action_set_queue *nasq;
314 const struct nx_action_note *nan;
315 const struct nx_action_set_tunnel64 *nast64;
316 const struct nx_action_write_metadata *nawm;
317 struct ofpact_tunnel *tunnel;
318 enum ofperr error = 0;
321 case OFPUTIL_ACTION_INVALID:
322 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
323 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
324 #include "ofp-util.def"
327 case OFPUTIL_NXAST_RESUBMIT:
328 resubmit_from_openflow((const struct nx_action_resubmit *) a, out);
331 case OFPUTIL_NXAST_SET_TUNNEL:
332 nast = (const struct nx_action_set_tunnel *) a;
333 tunnel = ofpact_put_SET_TUNNEL(out);
334 tunnel->ofpact.compat = code;
335 tunnel->tun_id = ntohl(nast->tun_id);
338 case OFPUTIL_NXAST_WRITE_METADATA:
339 nawm = ALIGNED_CAST(const struct nx_action_write_metadata *, a);
340 error = metadata_from_nxast(nawm, out);
343 case OFPUTIL_NXAST_SET_QUEUE:
344 nasq = (const struct nx_action_set_queue *) a;
345 ofpact_put_SET_QUEUE(out)->queue_id = ntohl(nasq->queue_id);
348 case OFPUTIL_NXAST_POP_QUEUE:
349 ofpact_put_POP_QUEUE(out);
352 case OFPUTIL_NXAST_REG_MOVE:
353 error = nxm_reg_move_from_openflow(
354 (const struct nx_action_reg_move *) a, out);
357 case OFPUTIL_NXAST_REG_LOAD:
358 error = nxm_reg_load_from_openflow(
359 ALIGNED_CAST(const struct nx_action_reg_load *, a), out);
362 case OFPUTIL_NXAST_STACK_PUSH:
363 error = nxm_stack_push_from_openflow(
364 (const struct nx_action_stack *) a, out);
367 case OFPUTIL_NXAST_STACK_POP:
368 error = nxm_stack_pop_from_openflow(
369 (const struct nx_action_stack *) a, out);
372 case OFPUTIL_NXAST_NOTE:
373 nan = (const struct nx_action_note *) a;
374 note_from_openflow(nan, out);
377 case OFPUTIL_NXAST_SET_TUNNEL64:
378 nast64 = ALIGNED_CAST(const struct nx_action_set_tunnel64 *, a);
379 tunnel = ofpact_put_SET_TUNNEL(out);
380 tunnel->ofpact.compat = code;
381 tunnel->tun_id = ntohll(nast64->tun_id);
384 case OFPUTIL_NXAST_MULTIPATH:
385 error = multipath_from_openflow((const struct nx_action_multipath *) a,
386 ofpact_put_MULTIPATH(out));
389 case OFPUTIL_NXAST_BUNDLE:
390 case OFPUTIL_NXAST_BUNDLE_LOAD:
391 error = bundle_from_openflow((const struct nx_action_bundle *) a, out);
394 case OFPUTIL_NXAST_OUTPUT_REG:
395 error = output_reg_from_openflow(
396 (const struct nx_action_output_reg *) a, out);
399 case OFPUTIL_NXAST_RESUBMIT_TABLE:
400 nar = (const struct nx_action_resubmit *) a;
401 error = resubmit_table_from_openflow(nar, out);
404 case OFPUTIL_NXAST_LEARN:
405 error = learn_from_openflow(
406 ALIGNED_CAST(const struct nx_action_learn *, a), out);
409 case OFPUTIL_NXAST_EXIT:
410 ofpact_put_EXIT(out);
413 case OFPUTIL_NXAST_DEC_TTL:
414 error = dec_ttl_from_openflow(out, code);
417 case OFPUTIL_NXAST_DEC_TTL_CNT_IDS:
418 error = dec_ttl_cnt_ids_from_openflow(
419 (const struct nx_action_cnt_ids *) a, out);
422 case OFPUTIL_NXAST_FIN_TIMEOUT:
423 fin_timeout_from_openflow(
424 (const struct nx_action_fin_timeout *) a, out);
427 case OFPUTIL_NXAST_CONTROLLER:
428 controller_from_openflow((const struct nx_action_controller *) a, out);
431 case OFPUTIL_NXAST_PUSH_MPLS: {
432 struct nx_action_push_mpls *nxapm = (struct nx_action_push_mpls *)a;
433 if (!eth_type_mpls(nxapm->ethertype)) {
434 return OFPERR_OFPBAC_BAD_ARGUMENT;
436 ofpact_put_PUSH_MPLS(out)->ethertype = nxapm->ethertype;
440 case OFPUTIL_NXAST_SET_MPLS_TTL: {
441 struct nx_action_mpls_ttl *nxamt = (struct nx_action_mpls_ttl *)a;
442 ofpact_put_SET_MPLS_TTL(out)->ttl = nxamt->ttl;
446 case OFPUTIL_NXAST_DEC_MPLS_TTL:
447 ofpact_put_DEC_MPLS_TTL(out);
450 case OFPUTIL_NXAST_POP_MPLS: {
451 struct nx_action_pop_mpls *nxapm = (struct nx_action_pop_mpls *)a;
452 if (eth_type_mpls(nxapm->ethertype)) {
453 return OFPERR_OFPBAC_BAD_ARGUMENT;
455 ofpact_put_POP_MPLS(out)->ethertype = nxapm->ethertype;
459 case OFPUTIL_NXAST_SAMPLE:
460 error = sample_from_openflow(
461 (const struct nx_action_sample *) a, out);
469 ofpact_from_openflow10(const union ofp_action *a, struct ofpbuf *out)
471 enum ofputil_action_code code;
474 error = decode_openflow10_action(a, &code);
480 case OFPUTIL_ACTION_INVALID:
481 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
482 #include "ofp-util.def"
485 case OFPUTIL_OFPAT10_OUTPUT:
486 return output_from_openflow10(&a->output10, out);
488 case OFPUTIL_OFPAT10_SET_VLAN_VID:
489 if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
490 return OFPERR_OFPBAC_BAD_ARGUMENT;
492 ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
495 case OFPUTIL_OFPAT10_SET_VLAN_PCP:
496 if (a->vlan_pcp.vlan_pcp & ~7) {
497 return OFPERR_OFPBAC_BAD_ARGUMENT;
499 ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
502 case OFPUTIL_OFPAT10_STRIP_VLAN:
503 ofpact_put_STRIP_VLAN(out);
506 case OFPUTIL_OFPAT10_SET_DL_SRC:
507 memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
508 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
511 case OFPUTIL_OFPAT10_SET_DL_DST:
512 memcpy(ofpact_put_SET_ETH_DST(out)->mac,
513 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
516 case OFPUTIL_OFPAT10_SET_NW_SRC:
517 ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
520 case OFPUTIL_OFPAT10_SET_NW_DST:
521 ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
524 case OFPUTIL_OFPAT10_SET_NW_TOS:
525 if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
526 return OFPERR_OFPBAC_BAD_ARGUMENT;
528 ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
531 case OFPUTIL_OFPAT10_SET_TP_SRC:
532 ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
535 case OFPUTIL_OFPAT10_SET_TP_DST:
536 ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
540 case OFPUTIL_OFPAT10_ENQUEUE:
541 error = enqueue_from_openflow10((const struct ofp10_action_enqueue *) a,
545 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
546 #include "ofp-util.def"
547 return ofpact_from_nxast(a, code, out);
553 static inline union ofp_action *
554 action_next(const union ofp_action *a)
556 return ((union ofp_action *) (void *)
557 ((uint8_t *) a + ntohs(a->header.len)));
561 action_is_valid(const union ofp_action *a, size_t n_actions)
563 uint16_t len = ntohs(a->header.len);
564 return (!(len % OFP_ACTION_ALIGN)
566 && len / sizeof *a <= n_actions);
569 /* This macro is careful to check for actions with bad lengths. */
570 #define ACTION_FOR_EACH(ITER, LEFT, ACTIONS, N_ACTIONS) \
571 for ((ITER) = (ACTIONS), (LEFT) = (N_ACTIONS); \
572 (LEFT) > 0 && action_is_valid(ITER, LEFT); \
573 ((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \
574 (ITER) = action_next(ITER)))
577 log_bad_action(const union ofp_action *actions, size_t n_actions, size_t ofs,
580 if (!VLOG_DROP_WARN(&rl)) {
584 ds_put_hex_dump(&s, actions, n_actions * sizeof *actions, 0, false);
585 VLOG_WARN("bad action at offset %#zx (%s):\n%s",
586 ofs * sizeof *actions, ofperr_get_name(error), ds_cstr(&s));
592 ofpacts_from_openflow(const union ofp_action *in, size_t n_in,
594 enum ofperr (*ofpact_from_openflow)(
595 const union ofp_action *a, struct ofpbuf *out))
597 const union ofp_action *a;
600 ACTION_FOR_EACH (a, left, in, n_in) {
601 enum ofperr error = ofpact_from_openflow(a, out);
603 log_bad_action(in, n_in, a - in, error);
608 enum ofperr error = OFPERR_OFPBAC_BAD_LEN;
609 log_bad_action(in, n_in, n_in - left, error);
618 ofpacts_from_openflow10(const union ofp_action *in, size_t n_in,
621 return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow10);
625 ofpacts_pull_actions(struct ofpbuf *openflow, unsigned int actions_len,
626 struct ofpbuf *ofpacts,
627 enum ofperr (*translate)(const union ofp_action *actions,
629 struct ofpbuf *ofpacts))
631 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
632 const union ofp_action *actions;
635 ofpbuf_clear(ofpacts);
637 if (actions_len % OFP_ACTION_ALIGN != 0) {
638 VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a "
639 "multiple of %d", actions_len, OFP_ACTION_ALIGN);
640 return OFPERR_OFPBRC_BAD_LEN;
643 actions = ofpbuf_try_pull(openflow, actions_len);
644 if (actions == NULL) {
645 VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds "
646 "remaining message length (%zu)",
647 actions_len, openflow->size);
648 return OFPERR_OFPBRC_BAD_LEN;
651 error = translate(actions, actions_len / OFP_ACTION_ALIGN, ofpacts);
653 ofpbuf_clear(ofpacts);
657 error = ofpacts_verify(ofpacts->data, ofpacts->size);
659 ofpbuf_clear(ofpacts);
664 /* Attempts to convert 'actions_len' bytes of OpenFlow 1.0 actions from the
665 * front of 'openflow' into ofpacts. On success, replaces any existing content
666 * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'.
667 * Returns 0 if successful, otherwise an OpenFlow error.
669 * The parsed actions are valid generically, but they may not be valid in a
670 * specific context. For example, port numbers up to OFPP_MAX are valid
671 * generically, but specific datapaths may only support port numbers in a
672 * smaller range. Use ofpacts_check() to additional check whether actions are
673 * valid in a specific context. */
675 ofpacts_pull_openflow10(struct ofpbuf *openflow, unsigned int actions_len,
676 struct ofpbuf *ofpacts)
678 return ofpacts_pull_actions(openflow, actions_len, ofpacts,
679 ofpacts_from_openflow10);
682 /* OpenFlow 1.1 actions. */
684 /* Parses 'a' to determine its type. On success stores the correct type into
685 * '*code' and returns 0. On failure returns an OFPERR_* error code and
686 * '*code' is indeterminate.
688 * The caller must have already verified that 'a''s length is potentially
689 * correct (that is, a->header.len is nonzero and a multiple of sizeof(union
690 * ofp_action) and no longer than the amount of space allocated to 'a').
692 * This function verifies that 'a''s length is correct for the type of action
693 * that it represents. */
695 decode_openflow11_action(const union ofp_action *a,
696 enum ofputil_action_code *code)
701 case CONSTANT_HTONS(OFPAT11_EXPERIMENTER):
702 return decode_nxast_action(a, code);
704 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
705 case CONSTANT_HTONS(ENUM): \
706 len = ntohs(a->header.len); \
708 ? len >= sizeof(struct STRUCT) \
709 : len == sizeof(struct STRUCT)) { \
710 *code = OFPUTIL_##ENUM; \
713 return OFPERR_OFPBAC_BAD_LEN; \
716 #include "ofp-util.def"
719 return OFPERR_OFPBAC_BAD_TYPE;
724 output_from_openflow11(const struct ofp11_action_output *oao,
727 struct ofpact_output *output;
730 output = ofpact_put_OUTPUT(out);
731 output->max_len = ntohs(oao->max_len);
733 error = ofputil_port_from_ofp11(oao->port, &output->port);
738 return ofputil_check_output_port(output->port, OFPP_MAX);
742 ofpact_from_openflow11(const union ofp_action *a, struct ofpbuf *out)
744 enum ofputil_action_code code;
747 error = decode_openflow11_action(a, &code);
753 case OFPUTIL_ACTION_INVALID:
754 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
755 #include "ofp-util.def"
758 case OFPUTIL_OFPAT11_OUTPUT:
759 return output_from_openflow11((const struct ofp11_action_output *) a,
762 case OFPUTIL_OFPAT11_SET_VLAN_VID:
763 if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
764 return OFPERR_OFPBAC_BAD_ARGUMENT;
766 ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
769 case OFPUTIL_OFPAT11_SET_VLAN_PCP:
770 if (a->vlan_pcp.vlan_pcp & ~7) {
771 return OFPERR_OFPBAC_BAD_ARGUMENT;
773 ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
776 case OFPUTIL_OFPAT11_PUSH_VLAN:
777 if (((const struct ofp11_action_push *)a)->ethertype !=
778 htons(ETH_TYPE_VLAN_8021Q)) {
779 /* XXX 802.1AD(QinQ) isn't supported at the moment */
780 return OFPERR_OFPBAC_BAD_ARGUMENT;
782 ofpact_put_PUSH_VLAN(out);
785 case OFPUTIL_OFPAT11_POP_VLAN:
786 ofpact_put_STRIP_VLAN(out);
789 case OFPUTIL_OFPAT11_SET_QUEUE:
790 ofpact_put_SET_QUEUE(out)->queue_id =
791 ntohl(((const struct ofp11_action_set_queue *)a)->queue_id);
794 case OFPUTIL_OFPAT11_SET_DL_SRC:
795 memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
796 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
799 case OFPUTIL_OFPAT11_SET_DL_DST:
800 memcpy(ofpact_put_SET_ETH_DST(out)->mac,
801 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
804 case OFPUTIL_OFPAT11_DEC_NW_TTL:
805 dec_ttl_from_openflow(out, code);
808 case OFPUTIL_OFPAT11_SET_NW_SRC:
809 ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
812 case OFPUTIL_OFPAT11_SET_NW_DST:
813 ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
816 case OFPUTIL_OFPAT11_SET_NW_TOS:
817 if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
818 return OFPERR_OFPBAC_BAD_ARGUMENT;
820 ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
823 case OFPUTIL_OFPAT11_SET_TP_SRC:
824 ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
827 case OFPUTIL_OFPAT11_SET_TP_DST:
828 ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
831 case OFPUTIL_OFPAT12_SET_FIELD:
832 return nxm_reg_load_from_openflow12_set_field(
833 (const struct ofp12_action_set_field *)a, out);
835 case OFPUTIL_OFPAT11_SET_MPLS_TTL: {
836 struct ofp11_action_mpls_ttl *oamt = (struct ofp11_action_mpls_ttl *)a;
837 ofpact_put_SET_MPLS_TTL(out)->ttl = oamt->mpls_ttl;
841 case OFPUTIL_OFPAT11_DEC_MPLS_TTL:
842 ofpact_put_DEC_MPLS_TTL(out);
845 case OFPUTIL_OFPAT11_PUSH_MPLS: {
846 struct ofp11_action_push *oap = (struct ofp11_action_push *)a;
847 if (!eth_type_mpls(oap->ethertype)) {
848 return OFPERR_OFPBAC_BAD_ARGUMENT;
850 ofpact_put_PUSH_MPLS(out)->ethertype = oap->ethertype;
854 case OFPUTIL_OFPAT11_POP_MPLS: {
855 struct ofp11_action_pop_mpls *oapm = (struct ofp11_action_pop_mpls *)a;
856 if (eth_type_mpls(oapm->ethertype)) {
857 return OFPERR_OFPBAC_BAD_ARGUMENT;
859 ofpact_put_POP_MPLS(out)->ethertype = oapm->ethertype;
863 case OFPUTIL_OFPAT11_GROUP: {
864 struct ofp11_action_group *oag = (struct ofp11_action_group *)a;
865 ofpact_put_GROUP(out)->group_id = ntohl(oag->group_id);
869 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
870 #include "ofp-util.def"
871 return ofpact_from_nxast(a, code, out);
878 ofpacts_from_openflow11(const union ofp_action *in, size_t n_in,
881 return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow11);
884 /* OpenFlow 1.1 instructions. */
886 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \
887 static inline const struct STRUCT * \
888 instruction_get_##ENUM(const struct ofp11_instruction *inst)\
890 ovs_assert(inst->type == htons(ENUM)); \
891 return ALIGNED_CAST(struct STRUCT *, inst); \
895 instruction_init_##ENUM(struct STRUCT *s) \
897 memset(s, 0, sizeof *s); \
898 s->type = htons(ENUM); \
899 s->len = htons(sizeof *s); \
902 static inline struct STRUCT * \
903 instruction_put_##ENUM(struct ofpbuf *buf) \
905 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
906 instruction_init_##ENUM(s); \
912 struct instruction_type_info {
913 enum ovs_instruction_type type;
917 static const struct instruction_type_info inst_info[] = {
918 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME},
924 ovs_instruction_name_from_type(enum ovs_instruction_type type)
926 return inst_info[type].name;
930 ovs_instruction_type_from_name(const char *name)
932 const struct instruction_type_info *p;
933 for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) {
934 if (!strcasecmp(name, p->name)) {
941 enum ovs_instruction_type
942 ovs_instruction_type_from_ofpact_type(enum ofpact_type type)
946 return OVSINST_OFPIT13_METER;
947 case OFPACT_CLEAR_ACTIONS:
948 return OVSINST_OFPIT11_CLEAR_ACTIONS;
949 case OFPACT_WRITE_METADATA:
950 return OVSINST_OFPIT11_WRITE_METADATA;
951 case OFPACT_GOTO_TABLE:
952 return OVSINST_OFPIT11_GOTO_TABLE;
955 case OFPACT_CONTROLLER:
957 case OFPACT_OUTPUT_REG:
959 case OFPACT_SET_VLAN_VID:
960 case OFPACT_SET_VLAN_PCP:
961 case OFPACT_STRIP_VLAN:
962 case OFPACT_PUSH_VLAN:
963 case OFPACT_SET_ETH_SRC:
964 case OFPACT_SET_ETH_DST:
965 case OFPACT_SET_IPV4_SRC:
966 case OFPACT_SET_IPV4_DST:
967 case OFPACT_SET_IPV4_DSCP:
968 case OFPACT_SET_L4_SRC_PORT:
969 case OFPACT_SET_L4_DST_PORT:
970 case OFPACT_REG_MOVE:
971 case OFPACT_REG_LOAD:
972 case OFPACT_STACK_PUSH:
973 case OFPACT_STACK_POP:
975 case OFPACT_SET_MPLS_TTL:
976 case OFPACT_DEC_MPLS_TTL:
977 case OFPACT_PUSH_MPLS:
978 case OFPACT_POP_MPLS:
979 case OFPACT_SET_TUNNEL:
980 case OFPACT_SET_QUEUE:
981 case OFPACT_POP_QUEUE:
982 case OFPACT_FIN_TIMEOUT:
983 case OFPACT_RESUBMIT:
985 case OFPACT_MULTIPATH:
990 return OVSINST_OFPIT11_APPLY_ACTIONS;
994 static inline struct ofp11_instruction *
995 instruction_next(const struct ofp11_instruction *inst)
997 return ((struct ofp11_instruction *) (void *)
998 ((uint8_t *) inst + ntohs(inst->len)));
1002 instruction_is_valid(const struct ofp11_instruction *inst,
1003 size_t n_instructions)
1005 uint16_t len = ntohs(inst->len);
1006 return (!(len % OFP11_INSTRUCTION_ALIGN)
1007 && len >= sizeof *inst
1008 && len / sizeof *inst <= n_instructions);
1011 /* This macro is careful to check for instructions with bad lengths. */
1012 #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \
1013 for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \
1014 (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \
1015 ((LEFT) -= (ntohs((ITER)->len) \
1016 / sizeof(struct ofp11_instruction)), \
1017 (ITER) = instruction_next(ITER)))
1020 decode_openflow11_instruction(const struct ofp11_instruction *inst,
1021 enum ovs_instruction_type *type)
1023 uint16_t len = ntohs(inst->len);
1025 switch (inst->type) {
1026 case CONSTANT_HTONS(OFPIT11_EXPERIMENTER):
1027 return OFPERR_OFPBIC_BAD_EXPERIMENTER;
1029 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \
1030 case CONSTANT_HTONS(ENUM): \
1032 ? len >= sizeof(struct STRUCT) \
1033 : len == sizeof(struct STRUCT)) { \
1034 *type = OVSINST_##ENUM; \
1037 return OFPERR_OFPBIC_BAD_LEN; \
1043 return OFPERR_OFPBIC_UNKNOWN_INST;
1048 decode_openflow11_instructions(const struct ofp11_instruction insts[],
1050 const struct ofp11_instruction *out[])
1052 const struct ofp11_instruction *inst;
1055 memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out);
1056 INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) {
1057 enum ovs_instruction_type type;
1060 error = decode_openflow11_instruction(inst, &type);
1066 return OFPERR_ONFBIC_DUP_INSTRUCTION;
1072 VLOG_WARN_RL(&rl, "bad instruction format at offset %zu",
1073 (n_insts - left) * sizeof *inst);
1074 return OFPERR_OFPBIC_BAD_LEN;
1080 get_actions_from_instruction(const struct ofp11_instruction *inst,
1081 const union ofp_action **actions,
1084 *actions = ALIGNED_CAST(const union ofp_action *, inst + 1);
1085 *n_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN;
1088 /* Attempts to convert 'actions_len' bytes of OpenFlow 1.1 actions from the
1089 * front of 'openflow' into ofpacts. On success, replaces any existing content
1090 * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'.
1091 * Returns 0 if successful, otherwise an OpenFlow error.
1093 * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in
1094 * instructions, so you should call ofpacts_pull_openflow11_instructions()
1095 * instead of this function.
1097 * The parsed actions are valid generically, but they may not be valid in a
1098 * specific context. For example, port numbers up to OFPP_MAX are valid
1099 * generically, but specific datapaths may only support port numbers in a
1100 * smaller range. Use ofpacts_check() to additional check whether actions are
1101 * valid in a specific context. */
1103 ofpacts_pull_openflow11_actions(struct ofpbuf *openflow,
1104 unsigned int actions_len,
1105 struct ofpbuf *ofpacts)
1107 return ofpacts_pull_actions(openflow, actions_len, ofpacts,
1108 ofpacts_from_openflow11);
1112 ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow,
1113 unsigned int instructions_len,
1114 struct ofpbuf *ofpacts)
1116 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1117 const struct ofp11_instruction *instructions;
1118 const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS];
1121 ofpbuf_clear(ofpacts);
1123 if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) {
1124 VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a "
1126 instructions_len, OFP11_INSTRUCTION_ALIGN);
1127 error = OFPERR_OFPBIC_BAD_LEN;
1131 instructions = ofpbuf_try_pull(openflow, instructions_len);
1132 if (instructions == NULL) {
1133 VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds "
1134 "remaining message length (%zu)",
1135 instructions_len, openflow->size);
1136 error = OFPERR_OFPBIC_BAD_LEN;
1140 error = decode_openflow11_instructions(
1141 instructions, instructions_len / OFP11_INSTRUCTION_ALIGN,
1147 if (insts[OVSINST_OFPIT13_METER]) {
1148 const struct ofp13_instruction_meter *oim;
1149 struct ofpact_meter *om;
1151 oim = ALIGNED_CAST(const struct ofp13_instruction_meter *,
1152 insts[OVSINST_OFPIT13_METER]);
1154 om = ofpact_put_METER(ofpacts);
1155 om->meter_id = ntohl(oim->meter_id);
1157 if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) {
1158 const union ofp_action *actions;
1161 get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS],
1162 &actions, &n_actions);
1163 error = ofpacts_from_openflow11(actions, n_actions, ofpacts);
1168 if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) {
1169 instruction_get_OFPIT11_CLEAR_ACTIONS(
1170 insts[OVSINST_OFPIT11_CLEAR_ACTIONS]);
1171 ofpact_put_CLEAR_ACTIONS(ofpacts);
1173 /* XXX Write-Actions */
1174 if (insts[OVSINST_OFPIT11_WRITE_METADATA]) {
1175 const struct ofp11_instruction_write_metadata *oiwm;
1176 struct ofpact_metadata *om;
1178 oiwm = ALIGNED_CAST(const struct ofp11_instruction_write_metadata *,
1179 insts[OVSINST_OFPIT11_WRITE_METADATA]);
1181 om = ofpact_put_WRITE_METADATA(ofpacts);
1182 om->metadata = oiwm->metadata;
1183 om->mask = oiwm->metadata_mask;
1185 if (insts[OVSINST_OFPIT11_GOTO_TABLE]) {
1186 const struct ofp11_instruction_goto_table *oigt;
1187 struct ofpact_goto_table *ogt;
1189 oigt = instruction_get_OFPIT11_GOTO_TABLE(
1190 insts[OVSINST_OFPIT11_GOTO_TABLE]);
1191 ogt = ofpact_put_GOTO_TABLE(ofpacts);
1192 ogt->table_id = oigt->table_id;
1195 if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) {
1196 error = OFPERR_OFPBIC_UNSUP_INST;
1200 error = ofpacts_verify(ofpacts->data, ofpacts->size);
1203 ofpbuf_clear(ofpacts);
1208 /* May modify flow->dl_type, caller must restore it. */
1210 ofpact_check__(const struct ofpact *a, struct flow *flow, ofp_port_t max_ports,
1213 const struct ofpact_enqueue *enqueue;
1217 return ofputil_check_output_port(ofpact_get_OUTPUT(a)->port,
1220 case OFPACT_CONTROLLER:
1223 case OFPACT_ENQUEUE:
1224 enqueue = ofpact_get_ENQUEUE(a);
1225 if (ofp_to_u16(enqueue->port) >= ofp_to_u16(max_ports)
1226 && enqueue->port != OFPP_IN_PORT
1227 && enqueue->port != OFPP_LOCAL) {
1228 return OFPERR_OFPBAC_BAD_OUT_PORT;
1232 case OFPACT_OUTPUT_REG:
1233 return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow);
1236 return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow);
1238 case OFPACT_SET_VLAN_VID:
1239 case OFPACT_SET_VLAN_PCP:
1240 case OFPACT_STRIP_VLAN:
1241 case OFPACT_PUSH_VLAN:
1242 case OFPACT_SET_ETH_SRC:
1243 case OFPACT_SET_ETH_DST:
1244 case OFPACT_SET_IPV4_SRC:
1245 case OFPACT_SET_IPV4_DST:
1246 case OFPACT_SET_IPV4_DSCP:
1247 case OFPACT_SET_L4_SRC_PORT:
1248 case OFPACT_SET_L4_DST_PORT:
1251 case OFPACT_REG_MOVE:
1252 return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow);
1254 case OFPACT_REG_LOAD:
1255 return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow);
1257 case OFPACT_STACK_PUSH:
1258 return nxm_stack_push_check(ofpact_get_STACK_PUSH(a), flow);
1260 case OFPACT_STACK_POP:
1261 return nxm_stack_pop_check(ofpact_get_STACK_POP(a), flow);
1263 case OFPACT_DEC_TTL:
1264 case OFPACT_SET_MPLS_TTL:
1265 case OFPACT_DEC_MPLS_TTL:
1266 case OFPACT_SET_TUNNEL:
1267 case OFPACT_SET_QUEUE:
1268 case OFPACT_POP_QUEUE:
1269 case OFPACT_FIN_TIMEOUT:
1270 case OFPACT_RESUBMIT:
1274 return learn_check(ofpact_get_LEARN(a), flow);
1276 case OFPACT_MULTIPATH:
1277 return multipath_check(ofpact_get_MULTIPATH(a), flow);
1283 case OFPACT_PUSH_MPLS:
1284 flow->dl_type = ofpact_get_PUSH_MPLS(a)->ethertype;
1287 case OFPACT_POP_MPLS:
1288 flow->dl_type = ofpact_get_POP_MPLS(a)->ethertype;
1294 case OFPACT_CLEAR_ACTIONS:
1295 case OFPACT_WRITE_METADATA:
1298 case OFPACT_METER: {
1299 uint32_t mid = ofpact_get_METER(a)->meter_id;
1300 if (mid == 0 || mid > OFPM13_MAX) {
1301 return OFPERR_OFPMMFC_INVALID_METER;
1306 case OFPACT_GOTO_TABLE:
1307 if (ofpact_get_GOTO_TABLE(a)->table_id <= table_id) {
1308 return OFPERR_OFPBRC_BAD_TABLE_ID;
1320 /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are
1321 * appropriate for a packet with the prerequisites satisfied by 'flow' in a
1322 * switch with no more than 'max_ports' ports.
1324 * May temporarily modify 'flow', but restores the changes before returning. */
1326 ofpacts_check(const struct ofpact ofpacts[], size_t ofpacts_len,
1327 struct flow *flow, ofp_port_t max_ports, uint8_t table_id)
1329 const struct ofpact *a;
1330 ovs_be16 dl_type = flow->dl_type;
1331 enum ofperr error = 0;
1333 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1334 error = ofpact_check__(a, flow, max_ports, table_id);
1339 flow->dl_type = dl_type; /* Restore. */
1343 /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are
1344 * in the appropriate order as defined by the OpenFlow spec. */
1346 ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len)
1348 const struct ofpact *a;
1349 enum ovs_instruction_type inst;
1351 inst = OVSINST_OFPIT11_APPLY_ACTIONS;
1352 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1353 enum ovs_instruction_type next;
1355 next = ovs_instruction_type_from_ofpact_type(a->type);
1356 if (inst != OVSINST_OFPIT11_APPLY_ACTIONS && next <= inst) {
1357 const char *name = ovs_instruction_name_from_type(inst);
1358 const char *next_name = ovs_instruction_name_from_type(next);
1361 VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow "
1362 "1.1+ compatibility", name);
1364 VLOG_WARN("invalid instruction ordering: %s must appear "
1365 "before %s, for OpenFlow 1.1+ compatibility",
1368 return OFPERR_OFPBAC_UNSUPPORTED_ORDER;
1377 /* Converting ofpacts to Nicira OpenFlow extensions. */
1380 ofpact_output_reg_to_nxast(const struct ofpact_output_reg *output_reg,
1383 struct nx_action_output_reg *naor = ofputil_put_NXAST_OUTPUT_REG(out);
1385 naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs,
1386 output_reg->src.n_bits);
1387 naor->src = htonl(output_reg->src.field->nxm_header);
1388 naor->max_len = htons(output_reg->max_len);
1392 ofpact_resubmit_to_nxast(const struct ofpact_resubmit *resubmit,
1395 struct nx_action_resubmit *nar;
1397 if (resubmit->table_id == 0xff
1398 && resubmit->ofpact.compat != OFPUTIL_NXAST_RESUBMIT_TABLE) {
1399 nar = ofputil_put_NXAST_RESUBMIT(out);
1401 nar = ofputil_put_NXAST_RESUBMIT_TABLE(out);
1402 nar->table = resubmit->table_id;
1404 nar->in_port = htons(ofp_to_u16(resubmit->in_port));
1408 ofpact_set_tunnel_to_nxast(const struct ofpact_tunnel *tunnel,
1411 uint64_t tun_id = tunnel->tun_id;
1413 if (tun_id <= UINT32_MAX
1414 && tunnel->ofpact.compat != OFPUTIL_NXAST_SET_TUNNEL64) {
1415 ofputil_put_NXAST_SET_TUNNEL(out)->tun_id = htonl(tun_id);
1417 ofputil_put_NXAST_SET_TUNNEL64(out)->tun_id = htonll(tun_id);
1422 ofpact_write_metadata_to_nxast(const struct ofpact_metadata *om,
1425 struct nx_action_write_metadata *nawm;
1427 nawm = ofputil_put_NXAST_WRITE_METADATA(out);
1428 nawm->metadata = om->metadata;
1429 nawm->mask = om->mask;
1433 ofpact_note_to_nxast(const struct ofpact_note *note, struct ofpbuf *out)
1435 size_t start_ofs = out->size;
1436 struct nx_action_note *nan;
1437 unsigned int remainder;
1440 nan = ofputil_put_NXAST_NOTE(out);
1441 out->size -= sizeof nan->note;
1443 ofpbuf_put(out, note->data, note->length);
1445 len = out->size - start_ofs;
1446 remainder = len % OFP_ACTION_ALIGN;
1448 ofpbuf_put_zeros(out, OFP_ACTION_ALIGN - remainder);
1450 nan = ofpbuf_at(out, start_ofs, sizeof *nan);
1451 nan->len = htons(out->size - start_ofs);
1455 ofpact_controller_to_nxast(const struct ofpact_controller *oc,
1458 struct nx_action_controller *nac;
1460 nac = ofputil_put_NXAST_CONTROLLER(out);
1461 nac->max_len = htons(oc->max_len);
1462 nac->controller_id = htons(oc->controller_id);
1463 nac->reason = oc->reason;
1467 ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids,
1470 if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) {
1471 ofputil_put_NXAST_DEC_TTL(out);
1473 struct nx_action_cnt_ids *nac_ids =
1474 ofputil_put_NXAST_DEC_TTL_CNT_IDS(out);
1475 int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN);
1479 nac_ids->len = htons(ntohs(nac_ids->len) + ids_len);
1480 nac_ids->n_controllers = htons(oc_ids->n_controllers);
1482 ids = ofpbuf_put_zeros(out, ids_len);
1483 for (i = 0; i < oc_ids->n_controllers; i++) {
1484 ids[i] = htons(oc_ids->cnt_ids[i]);
1490 ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout,
1493 struct nx_action_fin_timeout *naft = ofputil_put_NXAST_FIN_TIMEOUT(out);
1494 naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout);
1495 naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout);
1499 ofpact_sample_to_nxast(const struct ofpact_sample *os,
1502 struct nx_action_sample *nas;
1504 nas = ofputil_put_NXAST_SAMPLE(out);
1505 nas->probability = htons(os->probability);
1506 nas->collector_set_id = htonl(os->collector_set_id);
1507 nas->obs_domain_id = htonl(os->obs_domain_id);
1508 nas->obs_point_id = htonl(os->obs_point_id);
1512 ofpact_to_nxast(const struct ofpact *a, struct ofpbuf *out)
1515 case OFPACT_CONTROLLER:
1516 ofpact_controller_to_nxast(ofpact_get_CONTROLLER(a), out);
1519 case OFPACT_OUTPUT_REG:
1520 ofpact_output_reg_to_nxast(ofpact_get_OUTPUT_REG(a), out);
1524 bundle_to_nxast(ofpact_get_BUNDLE(a), out);
1527 case OFPACT_REG_MOVE:
1528 nxm_reg_move_to_nxast(ofpact_get_REG_MOVE(a), out);
1531 case OFPACT_REG_LOAD:
1532 nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out);
1535 case OFPACT_STACK_PUSH:
1536 nxm_stack_push_to_nxast(ofpact_get_STACK_PUSH(a), out);
1539 case OFPACT_STACK_POP:
1540 nxm_stack_pop_to_nxast(ofpact_get_STACK_POP(a), out);
1543 case OFPACT_DEC_TTL:
1544 ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out);
1547 case OFPACT_SET_MPLS_TTL:
1548 ofputil_put_NXAST_SET_MPLS_TTL(out)->ttl
1549 = ofpact_get_SET_MPLS_TTL(a)->ttl;
1552 case OFPACT_DEC_MPLS_TTL:
1553 ofputil_put_NXAST_DEC_MPLS_TTL(out);
1556 case OFPACT_SET_TUNNEL:
1557 ofpact_set_tunnel_to_nxast(ofpact_get_SET_TUNNEL(a), out);
1560 case OFPACT_WRITE_METADATA:
1561 ofpact_write_metadata_to_nxast(ofpact_get_WRITE_METADATA(a), out);
1564 case OFPACT_SET_QUEUE:
1565 ofputil_put_NXAST_SET_QUEUE(out)->queue_id
1566 = htonl(ofpact_get_SET_QUEUE(a)->queue_id);
1569 case OFPACT_POP_QUEUE:
1570 ofputil_put_NXAST_POP_QUEUE(out);
1573 case OFPACT_FIN_TIMEOUT:
1574 ofpact_fin_timeout_to_nxast(ofpact_get_FIN_TIMEOUT(a), out);
1577 case OFPACT_RESUBMIT:
1578 ofpact_resubmit_to_nxast(ofpact_get_RESUBMIT(a), out);
1582 learn_to_nxast(ofpact_get_LEARN(a), out);
1585 case OFPACT_MULTIPATH:
1586 multipath_to_nxast(ofpact_get_MULTIPATH(a), out);
1590 ofpact_note_to_nxast(ofpact_get_NOTE(a), out);
1594 ofputil_put_NXAST_EXIT(out);
1597 case OFPACT_PUSH_MPLS:
1598 ofputil_put_NXAST_PUSH_MPLS(out)->ethertype =
1599 ofpact_get_PUSH_MPLS(a)->ethertype;
1602 case OFPACT_POP_MPLS:
1603 ofputil_put_NXAST_POP_MPLS(out)->ethertype =
1604 ofpact_get_POP_MPLS(a)->ethertype;
1608 ofpact_sample_to_nxast(ofpact_get_SAMPLE(a), out);
1613 case OFPACT_ENQUEUE:
1614 case OFPACT_SET_VLAN_VID:
1615 case OFPACT_SET_VLAN_PCP:
1616 case OFPACT_STRIP_VLAN:
1617 case OFPACT_PUSH_VLAN:
1618 case OFPACT_SET_ETH_SRC:
1619 case OFPACT_SET_ETH_DST:
1620 case OFPACT_SET_IPV4_SRC:
1621 case OFPACT_SET_IPV4_DST:
1622 case OFPACT_SET_IPV4_DSCP:
1623 case OFPACT_SET_L4_SRC_PORT:
1624 case OFPACT_SET_L4_DST_PORT:
1625 case OFPACT_CLEAR_ACTIONS:
1626 case OFPACT_GOTO_TABLE:
1632 /* Converting ofpacts to OpenFlow 1.0. */
1635 ofpact_output_to_openflow10(const struct ofpact_output *output,
1638 struct ofp10_action_output *oao;
1640 oao = ofputil_put_OFPAT10_OUTPUT(out);
1641 oao->port = htons(ofp_to_u16(output->port));
1642 oao->max_len = htons(output->max_len);
1646 ofpact_enqueue_to_openflow10(const struct ofpact_enqueue *enqueue,
1649 struct ofp10_action_enqueue *oae;
1651 oae = ofputil_put_OFPAT10_ENQUEUE(out);
1652 oae->port = htons(ofp_to_u16(enqueue->port));
1653 oae->queue_id = htonl(enqueue->queue);
1657 ofpact_to_openflow10(const struct ofpact *a, struct ofpbuf *out)
1661 ofpact_output_to_openflow10(ofpact_get_OUTPUT(a), out);
1664 case OFPACT_ENQUEUE:
1665 ofpact_enqueue_to_openflow10(ofpact_get_ENQUEUE(a), out);
1668 case OFPACT_SET_VLAN_VID:
1669 ofputil_put_OFPAT10_SET_VLAN_VID(out)->vlan_vid
1670 = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid);
1673 case OFPACT_SET_VLAN_PCP:
1674 ofputil_put_OFPAT10_SET_VLAN_PCP(out)->vlan_pcp
1675 = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp;
1678 case OFPACT_STRIP_VLAN:
1679 ofputil_put_OFPAT10_STRIP_VLAN(out);
1682 case OFPACT_SET_ETH_SRC:
1683 memcpy(ofputil_put_OFPAT10_SET_DL_SRC(out)->dl_addr,
1684 ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN);
1687 case OFPACT_SET_ETH_DST:
1688 memcpy(ofputil_put_OFPAT10_SET_DL_DST(out)->dl_addr,
1689 ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN);
1692 case OFPACT_SET_IPV4_SRC:
1693 ofputil_put_OFPAT10_SET_NW_SRC(out)->nw_addr
1694 = ofpact_get_SET_IPV4_SRC(a)->ipv4;
1697 case OFPACT_SET_IPV4_DST:
1698 ofputil_put_OFPAT10_SET_NW_DST(out)->nw_addr
1699 = ofpact_get_SET_IPV4_DST(a)->ipv4;
1702 case OFPACT_SET_IPV4_DSCP:
1703 ofputil_put_OFPAT10_SET_NW_TOS(out)->nw_tos
1704 = ofpact_get_SET_IPV4_DSCP(a)->dscp;
1707 case OFPACT_SET_L4_SRC_PORT:
1708 ofputil_put_OFPAT10_SET_TP_SRC(out)->tp_port
1709 = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
1712 case OFPACT_SET_L4_DST_PORT:
1713 ofputil_put_OFPAT10_SET_TP_DST(out)->tp_port
1714 = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
1717 case OFPACT_PUSH_VLAN:
1718 case OFPACT_CLEAR_ACTIONS:
1719 case OFPACT_GOTO_TABLE:
1727 case OFPACT_CONTROLLER:
1728 case OFPACT_OUTPUT_REG:
1730 case OFPACT_REG_MOVE:
1731 case OFPACT_REG_LOAD:
1732 case OFPACT_STACK_PUSH:
1733 case OFPACT_STACK_POP:
1734 case OFPACT_DEC_TTL:
1735 case OFPACT_SET_MPLS_TTL:
1736 case OFPACT_DEC_MPLS_TTL:
1737 case OFPACT_SET_TUNNEL:
1738 case OFPACT_WRITE_METADATA:
1739 case OFPACT_SET_QUEUE:
1740 case OFPACT_POP_QUEUE:
1741 case OFPACT_FIN_TIMEOUT:
1742 case OFPACT_RESUBMIT:
1744 case OFPACT_MULTIPATH:
1747 case OFPACT_PUSH_MPLS:
1748 case OFPACT_POP_MPLS:
1750 ofpact_to_nxast(a, out);
1755 /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow 1.0
1756 * actions in 'openflow', appending the actions to any existing data in
1759 ofpacts_put_openflow10(const struct ofpact ofpacts[], size_t ofpacts_len,
1760 struct ofpbuf *openflow)
1762 const struct ofpact *a;
1764 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1765 ofpact_to_openflow10(a, openflow);
1769 /* Converting ofpacts to OpenFlow 1.1. */
1772 ofpact_output_to_openflow11(const struct ofpact_output *output,
1775 struct ofp11_action_output *oao;
1777 oao = ofputil_put_OFPAT11_OUTPUT(out);
1778 oao->port = ofputil_port_to_ofp11(output->port);
1779 oao->max_len = htons(output->max_len);
1783 ofpact_dec_ttl_to_openflow11(const struct ofpact_cnt_ids *dec_ttl,
1786 if (dec_ttl->n_controllers == 1 && dec_ttl->cnt_ids[0] == 0
1787 && (!dec_ttl->ofpact.compat ||
1788 dec_ttl->ofpact.compat == OFPUTIL_OFPAT11_DEC_NW_TTL)) {
1789 ofputil_put_OFPAT11_DEC_NW_TTL(out);
1791 ofpact_dec_ttl_to_nxast(dec_ttl, out);
1796 ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out)
1800 return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out);
1802 case OFPACT_ENQUEUE:
1806 case OFPACT_SET_VLAN_VID:
1807 ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid
1808 = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid);
1811 case OFPACT_SET_VLAN_PCP:
1812 ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp
1813 = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp;
1816 case OFPACT_STRIP_VLAN:
1817 ofputil_put_OFPAT11_POP_VLAN(out);
1820 case OFPACT_PUSH_VLAN:
1821 /* XXX ETH_TYPE_VLAN_8021AD case */
1822 ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype =
1823 htons(ETH_TYPE_VLAN_8021Q);
1826 case OFPACT_SET_QUEUE:
1827 ofputil_put_OFPAT11_SET_QUEUE(out)->queue_id
1828 = htonl(ofpact_get_SET_QUEUE(a)->queue_id);
1831 case OFPACT_SET_ETH_SRC:
1832 memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr,
1833 ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN);
1836 case OFPACT_SET_ETH_DST:
1837 memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr,
1838 ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN);
1841 case OFPACT_SET_IPV4_SRC:
1842 ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr
1843 = ofpact_get_SET_IPV4_SRC(a)->ipv4;
1846 case OFPACT_SET_IPV4_DST:
1847 ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr
1848 = ofpact_get_SET_IPV4_DST(a)->ipv4;
1851 case OFPACT_SET_IPV4_DSCP:
1852 ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos
1853 = ofpact_get_SET_IPV4_DSCP(a)->dscp;
1856 case OFPACT_SET_L4_SRC_PORT:
1857 ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port
1858 = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
1861 case OFPACT_SET_L4_DST_PORT:
1862 ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port
1863 = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
1866 case OFPACT_DEC_TTL:
1867 ofpact_dec_ttl_to_openflow11(ofpact_get_DEC_TTL(a), out);
1870 case OFPACT_SET_MPLS_TTL:
1871 ofputil_put_OFPAT11_SET_MPLS_TTL(out)->mpls_ttl
1872 = ofpact_get_SET_MPLS_TTL(a)->ttl;
1875 case OFPACT_DEC_MPLS_TTL:
1876 ofputil_put_OFPAT11_DEC_MPLS_TTL(out);
1879 case OFPACT_WRITE_METADATA:
1880 /* OpenFlow 1.1 uses OFPIT_WRITE_METADATA to express this action. */
1883 case OFPACT_PUSH_MPLS:
1884 ofputil_put_OFPAT11_PUSH_MPLS(out)->ethertype =
1885 ofpact_get_PUSH_MPLS(a)->ethertype;
1888 case OFPACT_POP_MPLS:
1889 ofputil_put_OFPAT11_POP_MPLS(out)->ethertype =
1890 ofpact_get_POP_MPLS(a)->ethertype;
1894 case OFPACT_CLEAR_ACTIONS:
1895 case OFPACT_GOTO_TABLE:
1900 ofputil_put_OFPAT11_GROUP(out)->group_id =
1901 htonl(ofpact_get_GROUP(a)->group_id);
1904 case OFPACT_CONTROLLER:
1905 case OFPACT_OUTPUT_REG:
1907 case OFPACT_REG_MOVE:
1908 case OFPACT_REG_LOAD:
1909 case OFPACT_STACK_PUSH:
1910 case OFPACT_STACK_POP:
1911 case OFPACT_SET_TUNNEL:
1912 case OFPACT_POP_QUEUE:
1913 case OFPACT_FIN_TIMEOUT:
1914 case OFPACT_RESUBMIT:
1916 case OFPACT_MULTIPATH:
1920 ofpact_to_nxast(a, out);
1925 /* Converts the ofpacts in 'ofpacts' (terminated by OFPACT_END) into OpenFlow
1926 * 1.1 actions in 'openflow', appending the actions to any existing data in
1929 ofpacts_put_openflow11_actions(const struct ofpact ofpacts[],
1930 size_t ofpacts_len, struct ofpbuf *openflow)
1932 const struct ofpact *a;
1933 size_t start_size = openflow->size;
1935 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1936 ofpact_to_openflow11(a, openflow);
1939 return openflow->size - start_size;
1943 ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs)
1945 struct ofp11_instruction_actions *oia;
1947 /* Update the instruction's length (or, if it's empty, delete it). */
1948 oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia);
1949 if (openflow->size > ofs + sizeof *oia) {
1950 oia->len = htons(openflow->size - ofs);
1952 openflow->size = ofs;
1957 ofpacts_put_openflow11_instructions(const struct ofpact ofpacts[],
1959 struct ofpbuf *openflow)
1961 const struct ofpact *a;
1963 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1964 switch (ovs_instruction_type_from_ofpact_type(a->type)) {
1965 case OVSINST_OFPIT11_CLEAR_ACTIONS:
1966 instruction_put_OFPIT11_CLEAR_ACTIONS(openflow);
1969 case OVSINST_OFPIT11_GOTO_TABLE: {
1970 struct ofp11_instruction_goto_table *oigt;
1971 oigt = instruction_put_OFPIT11_GOTO_TABLE(openflow);
1972 oigt->table_id = ofpact_get_GOTO_TABLE(a)->table_id;
1973 memset(oigt->pad, 0, sizeof oigt->pad);
1977 case OVSINST_OFPIT11_WRITE_METADATA: {
1978 const struct ofpact_metadata *om;
1979 struct ofp11_instruction_write_metadata *oiwm;
1981 om = ofpact_get_WRITE_METADATA(a);
1982 oiwm = instruction_put_OFPIT11_WRITE_METADATA(openflow);
1983 oiwm->metadata = om->metadata;
1984 oiwm->metadata_mask = om->mask;
1988 case OVSINST_OFPIT13_METER: {
1989 const struct ofpact_meter *om;
1990 struct ofp13_instruction_meter *oim;
1992 om = ofpact_get_METER(a);
1993 oim = instruction_put_OFPIT13_METER(openflow);
1994 oim->meter_id = htonl(om->meter_id);
1998 case OVSINST_OFPIT11_APPLY_ACTIONS: {
1999 const size_t ofs = openflow->size;
2000 const size_t ofpacts_len_left =
2001 (uint8_t*)ofpact_end(ofpacts, ofpacts_len) - (uint8_t*)a;
2002 const struct ofpact *action;
2003 const struct ofpact *processed = a;
2005 instruction_put_OFPIT11_APPLY_ACTIONS(openflow);
2006 OFPACT_FOR_EACH(action, a, ofpacts_len_left) {
2007 if (ovs_instruction_type_from_ofpact_type(action->type)
2008 != OVSINST_OFPIT11_APPLY_ACTIONS) {
2011 ofpact_to_openflow11(action, openflow);
2014 ofpacts_update_instruction_actions(openflow, ofs);
2019 case OVSINST_OFPIT11_WRITE_ACTIONS:
2025 /* Returns true if 'action' outputs to 'port', false otherwise. */
2027 ofpact_outputs_to_port(const struct ofpact *ofpact, ofp_port_t port)
2029 switch (ofpact->type) {
2031 return ofpact_get_OUTPUT(ofpact)->port == port;
2032 case OFPACT_ENQUEUE:
2033 return ofpact_get_ENQUEUE(ofpact)->port == port;
2034 case OFPACT_CONTROLLER:
2035 return port == OFPP_CONTROLLER;
2037 case OFPACT_OUTPUT_REG:
2039 case OFPACT_SET_VLAN_VID:
2040 case OFPACT_SET_VLAN_PCP:
2041 case OFPACT_STRIP_VLAN:
2042 case OFPACT_PUSH_VLAN:
2043 case OFPACT_SET_ETH_SRC:
2044 case OFPACT_SET_ETH_DST:
2045 case OFPACT_SET_IPV4_SRC:
2046 case OFPACT_SET_IPV4_DST:
2047 case OFPACT_SET_IPV4_DSCP:
2048 case OFPACT_SET_L4_SRC_PORT:
2049 case OFPACT_SET_L4_DST_PORT:
2050 case OFPACT_REG_MOVE:
2051 case OFPACT_REG_LOAD:
2052 case OFPACT_STACK_PUSH:
2053 case OFPACT_STACK_POP:
2054 case OFPACT_DEC_TTL:
2055 case OFPACT_SET_MPLS_TTL:
2056 case OFPACT_DEC_MPLS_TTL:
2057 case OFPACT_SET_TUNNEL:
2058 case OFPACT_WRITE_METADATA:
2059 case OFPACT_SET_QUEUE:
2060 case OFPACT_POP_QUEUE:
2061 case OFPACT_FIN_TIMEOUT:
2062 case OFPACT_RESUBMIT:
2064 case OFPACT_MULTIPATH:
2067 case OFPACT_PUSH_MPLS:
2068 case OFPACT_POP_MPLS:
2070 case OFPACT_CLEAR_ACTIONS:
2071 case OFPACT_GOTO_TABLE:
2079 /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs
2080 * to 'port', false otherwise. */
2082 ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len,
2085 const struct ofpact *a;
2087 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2088 if (ofpact_outputs_to_port(a, port)) {
2096 /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs
2097 * to 'group', false otherwise. */
2099 ofpacts_output_to_group(const struct ofpact *ofpacts, size_t ofpacts_len,
2102 const struct ofpact *a;
2104 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2105 if (a->type == OFPACT_GROUP
2106 && ofpact_get_GROUP(a)->group_id == group_id) {
2115 ofpacts_equal(const struct ofpact *a, size_t a_len,
2116 const struct ofpact *b, size_t b_len)
2118 return a_len == b_len && !memcmp(a, b, a_len);
2121 /* Finds the OFPACT_METER action, if any, in the 'ofpacts_len' bytes of
2122 * 'ofpacts'. If found, returns its meter ID; if not, returns 0.
2124 * This function relies on the order of 'ofpacts' being correct (as checked by
2125 * ofpacts_verify()). */
2127 ofpacts_get_meter(const struct ofpact ofpacts[], size_t ofpacts_len)
2129 const struct ofpact *a;
2131 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2132 enum ovs_instruction_type inst;
2134 inst = ovs_instruction_type_from_ofpact_type(a->type);
2135 if (a->type == OFPACT_METER) {
2136 return ofpact_get_METER(a)->meter_id;
2137 } else if (inst > OVSINST_OFPIT13_METER) {
2145 /* Formatting ofpacts. */
2148 print_note(const struct ofpact_note *note, struct ds *string)
2152 ds_put_cstr(string, "note:");
2153 for (i = 0; i < note->length; i++) {
2155 ds_put_char(string, '.');
2157 ds_put_format(string, "%02"PRIx8, note->data[i]);
2162 print_dec_ttl(const struct ofpact_cnt_ids *ids,
2167 ds_put_cstr(s, "dec_ttl");
2168 if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) {
2169 ds_put_cstr(s, "(");
2170 for (i = 0; i < ids->n_controllers; i++) {
2172 ds_put_cstr(s, ",");
2174 ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]);
2176 ds_put_cstr(s, ")");
2181 print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout,
2184 ds_put_cstr(s, "fin_timeout(");
2185 if (fin_timeout->fin_idle_timeout) {
2186 ds_put_format(s, "idle_timeout=%"PRIu16",",
2187 fin_timeout->fin_idle_timeout);
2189 if (fin_timeout->fin_hard_timeout) {
2190 ds_put_format(s, "hard_timeout=%"PRIu16",",
2191 fin_timeout->fin_hard_timeout);
2194 ds_put_char(s, ')');
2198 ofpact_format(const struct ofpact *a, struct ds *s)
2200 const struct ofpact_enqueue *enqueue;
2201 const struct ofpact_resubmit *resubmit;
2202 const struct ofpact_controller *controller;
2203 const struct ofpact_metadata *metadata;
2204 const struct ofpact_tunnel *tunnel;
2205 const struct ofpact_sample *sample;
2210 port = ofpact_get_OUTPUT(a)->port;
2211 if (ofp_to_u16(port) < ofp_to_u16(OFPP_MAX)) {
2212 ds_put_format(s, "output:%"PRIu16, port);
2214 ofputil_format_port(port, s);
2215 if (port == OFPP_CONTROLLER) {
2216 ds_put_format(s, ":%"PRIu16, ofpact_get_OUTPUT(a)->max_len);
2221 case OFPACT_CONTROLLER:
2222 controller = ofpact_get_CONTROLLER(a);
2223 if (controller->reason == OFPR_ACTION &&
2224 controller->controller_id == 0) {
2225 ds_put_format(s, "CONTROLLER:%"PRIu16,
2226 ofpact_get_CONTROLLER(a)->max_len);
2228 enum ofp_packet_in_reason reason = controller->reason;
2230 ds_put_cstr(s, "controller(");
2231 if (reason != OFPR_ACTION) {
2232 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
2234 ds_put_format(s, "reason=%s,",
2235 ofputil_packet_in_reason_to_string(
2236 reason, reasonbuf, sizeof reasonbuf));
2238 if (controller->max_len != UINT16_MAX) {
2239 ds_put_format(s, "max_len=%"PRIu16",", controller->max_len);
2241 if (controller->controller_id != 0) {
2242 ds_put_format(s, "id=%"PRIu16",", controller->controller_id);
2245 ds_put_char(s, ')');
2249 case OFPACT_ENQUEUE:
2250 enqueue = ofpact_get_ENQUEUE(a);
2251 ds_put_format(s, "enqueue:");
2252 ofputil_format_port(enqueue->port, s);
2253 ds_put_format(s, "q%"PRIu32, enqueue->queue);
2256 case OFPACT_OUTPUT_REG:
2257 ds_put_cstr(s, "output:");
2258 mf_format_subfield(&ofpact_get_OUTPUT_REG(a)->src, s);
2262 bundle_format(ofpact_get_BUNDLE(a), s);
2265 case OFPACT_SET_VLAN_VID:
2266 ds_put_format(s, "mod_vlan_vid:%"PRIu16,
2267 ofpact_get_SET_VLAN_VID(a)->vlan_vid);
2270 case OFPACT_SET_VLAN_PCP:
2271 ds_put_format(s, "mod_vlan_pcp:%"PRIu8,
2272 ofpact_get_SET_VLAN_PCP(a)->vlan_pcp);
2275 case OFPACT_STRIP_VLAN:
2276 ds_put_cstr(s, "strip_vlan");
2279 case OFPACT_PUSH_VLAN:
2280 /* XXX 802.1AD case*/
2281 ds_put_format(s, "push_vlan:%#"PRIx16, ETH_TYPE_VLAN_8021Q);
2284 case OFPACT_SET_ETH_SRC:
2285 ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT,
2286 ETH_ADDR_ARGS(ofpact_get_SET_ETH_SRC(a)->mac));
2289 case OFPACT_SET_ETH_DST:
2290 ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT,
2291 ETH_ADDR_ARGS(ofpact_get_SET_ETH_DST(a)->mac));
2294 case OFPACT_SET_IPV4_SRC:
2295 ds_put_format(s, "mod_nw_src:"IP_FMT,
2296 IP_ARGS(ofpact_get_SET_IPV4_SRC(a)->ipv4));
2299 case OFPACT_SET_IPV4_DST:
2300 ds_put_format(s, "mod_nw_dst:"IP_FMT,
2301 IP_ARGS(ofpact_get_SET_IPV4_DST(a)->ipv4));
2304 case OFPACT_SET_IPV4_DSCP:
2305 ds_put_format(s, "mod_nw_tos:%d", ofpact_get_SET_IPV4_DSCP(a)->dscp);
2308 case OFPACT_SET_L4_SRC_PORT:
2309 ds_put_format(s, "mod_tp_src:%d", ofpact_get_SET_L4_SRC_PORT(a)->port);
2312 case OFPACT_SET_L4_DST_PORT:
2313 ds_put_format(s, "mod_tp_dst:%d", ofpact_get_SET_L4_DST_PORT(a)->port);
2316 case OFPACT_REG_MOVE:
2317 nxm_format_reg_move(ofpact_get_REG_MOVE(a), s);
2320 case OFPACT_REG_LOAD:
2321 nxm_format_reg_load(ofpact_get_REG_LOAD(a), s);
2324 case OFPACT_STACK_PUSH:
2325 nxm_format_stack_push(ofpact_get_STACK_PUSH(a), s);
2328 case OFPACT_STACK_POP:
2329 nxm_format_stack_pop(ofpact_get_STACK_POP(a), s);
2332 case OFPACT_DEC_TTL:
2333 print_dec_ttl(ofpact_get_DEC_TTL(a), s);
2336 case OFPACT_SET_MPLS_TTL:
2337 ds_put_format(s, "set_mpls_ttl(%"PRIu8")",
2338 ofpact_get_SET_MPLS_TTL(a)->ttl);
2341 case OFPACT_DEC_MPLS_TTL:
2342 ds_put_cstr(s, "dec_mpls_ttl");
2345 case OFPACT_SET_TUNNEL:
2346 tunnel = ofpact_get_SET_TUNNEL(a);
2347 ds_put_format(s, "set_tunnel%s:%#"PRIx64,
2348 (tunnel->tun_id > UINT32_MAX
2349 || a->compat == OFPUTIL_NXAST_SET_TUNNEL64 ? "64" : ""),
2353 case OFPACT_SET_QUEUE:
2354 ds_put_format(s, "set_queue:%"PRIu32,
2355 ofpact_get_SET_QUEUE(a)->queue_id);
2358 case OFPACT_POP_QUEUE:
2359 ds_put_cstr(s, "pop_queue");
2362 case OFPACT_FIN_TIMEOUT:
2363 print_fin_timeout(ofpact_get_FIN_TIMEOUT(a), s);
2366 case OFPACT_RESUBMIT:
2367 resubmit = ofpact_get_RESUBMIT(a);
2368 if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) {
2369 ds_put_cstr(s, "resubmit:");
2370 ofputil_format_port(resubmit->in_port, s);
2372 ds_put_format(s, "resubmit(");
2373 if (resubmit->in_port != OFPP_IN_PORT) {
2374 ofputil_format_port(resubmit->in_port, s);
2376 ds_put_char(s, ',');
2377 if (resubmit->table_id != 255) {
2378 ds_put_format(s, "%"PRIu8, resubmit->table_id);
2380 ds_put_char(s, ')');
2385 learn_format(ofpact_get_LEARN(a), s);
2388 case OFPACT_MULTIPATH:
2389 multipath_format(ofpact_get_MULTIPATH(a), s);
2393 print_note(ofpact_get_NOTE(a), s);
2396 case OFPACT_PUSH_MPLS:
2397 ds_put_format(s, "push_mpls:0x%04"PRIx16,
2398 ntohs(ofpact_get_PUSH_MPLS(a)->ethertype));
2401 case OFPACT_POP_MPLS:
2402 ds_put_format(s, "pop_mpls:0x%04"PRIx16,
2403 ntohs(ofpact_get_POP_MPLS(a)->ethertype));
2407 ds_put_cstr(s, "exit");
2411 sample = ofpact_get_SAMPLE(a);
2413 s, "sample(probability=%"PRIu16",collector_set_id=%"PRIu32
2414 ",obs_domain_id=%"PRIu32",obs_point_id=%"PRIu32")",
2415 sample->probability, sample->collector_set_id,
2416 sample->obs_domain_id, sample->obs_point_id);
2419 case OFPACT_CLEAR_ACTIONS:
2420 ds_put_format(s, "%s",
2421 ovs_instruction_name_from_type(
2422 OVSINST_OFPIT11_CLEAR_ACTIONS));
2425 case OFPACT_WRITE_METADATA:
2426 metadata = ofpact_get_WRITE_METADATA(a);
2427 ds_put_format(s, "%s:%#"PRIx64,
2428 ovs_instruction_name_from_type(
2429 OVSINST_OFPIT11_WRITE_METADATA),
2430 ntohll(metadata->metadata));
2431 if (metadata->mask != OVS_BE64_MAX) {
2432 ds_put_format(s, "/%#"PRIx64, ntohll(metadata->mask));
2436 case OFPACT_GOTO_TABLE:
2437 ds_put_format(s, "%s:%"PRIu8,
2438 ovs_instruction_name_from_type(
2439 OVSINST_OFPIT11_GOTO_TABLE),
2440 ofpact_get_GOTO_TABLE(a)->table_id);
2444 ds_put_format(s, "%s:%"PRIu32,
2445 ovs_instruction_name_from_type(OVSINST_OFPIT13_METER),
2446 ofpact_get_METER(a)->meter_id);
2450 ds_put_format(s, "group:%"PRIu32,
2451 ofpact_get_GROUP(a)->group_id);
2456 /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in
2457 * 'ofpacts' to 'string'. */
2459 ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len,
2462 ds_put_cstr(string, "actions=");
2464 ds_put_cstr(string, "drop");
2466 const struct ofpact *a;
2468 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2470 ds_put_cstr(string, ",");
2473 /* XXX write-actions */
2474 ofpact_format(a, string);
2479 /* Internal use by helpers. */
2482 ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len)
2484 struct ofpact *ofpact;
2486 ofpact_pad(ofpacts);
2487 ofpact = ofpacts->l2 = ofpbuf_put_uninit(ofpacts, len);
2488 ofpact_init(ofpact, type, len);
2493 ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len)
2495 memset(ofpact, 0, len);
2496 ofpact->type = type;
2497 ofpact->compat = OFPUTIL_ACTION_INVALID;
2501 /* Updates 'ofpact->len' to the number of bytes in the tail of 'ofpacts'
2502 * starting at 'ofpact'.
2504 * This is the correct way to update a variable-length ofpact's length after
2505 * adding the variable-length part of the payload. (See the large comment
2506 * near the end of ofp-actions.h for more information.) */
2508 ofpact_update_len(struct ofpbuf *ofpacts, struct ofpact *ofpact)
2510 ovs_assert(ofpact == ofpacts->l2);
2511 ofpact->len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact;
2514 /* Pads out 'ofpacts' to a multiple of OFPACT_ALIGNTO bytes in length. Each
2515 * ofpact_put_<ENUM>() calls this function automatically beforehand, but the
2516 * client must call this itself after adding the final ofpact to an array of
2519 * (The consequences of failing to call this function are probably not dire.
2520 * OFPACT_FOR_EACH will calculate a pointer beyond the end of the ofpacts, but
2521 * not dereference it. That's undefined behavior, technically, but it will not
2522 * cause a real problem on common systems. Still, it seems better to call
2525 ofpact_pad(struct ofpbuf *ofpacts)
2527 unsigned int rem = ofpacts->size % OFPACT_ALIGNTO;
2529 ofpbuf_put_zeros(ofpacts, OFPACT_ALIGNTO - rem);
2534 ofpact_set_field_init(struct ofpact_reg_load *load, const struct mf_field *mf,
2537 load->ofpact.compat = OFPUTIL_OFPAT12_SET_FIELD;
2538 load->dst.field = mf;
2540 load->dst.n_bits = mf->n_bits;
2541 bitwise_copy(src, mf->n_bytes, load->dst.ofs,
2542 &load->subvalue, sizeof load->subvalue, 0, mf->n_bits);