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 = 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 = ntohs(oae->port);
59 enqueue->queue = ntohl(oae->queue_id);
60 if (enqueue->port >= OFPP_MAX && enqueue->port != OFPP_IN_PORT
61 && enqueue->port != OFPP_LOCAL) {
62 return OFPERR_OFPBAC_BAD_OUT_PORT;
68 resubmit_from_openflow(const struct nx_action_resubmit *nar,
71 struct ofpact_resubmit *resubmit;
73 resubmit = ofpact_put_RESUBMIT(out);
74 resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT;
75 resubmit->in_port = ntohs(nar->in_port);
76 resubmit->table_id = 0xff;
80 resubmit_table_from_openflow(const struct nx_action_resubmit *nar,
83 struct ofpact_resubmit *resubmit;
85 if (nar->pad[0] || nar->pad[1] || nar->pad[2]) {
86 return OFPERR_OFPBAC_BAD_ARGUMENT;
89 resubmit = ofpact_put_RESUBMIT(out);
90 resubmit->ofpact.compat = OFPUTIL_NXAST_RESUBMIT_TABLE;
91 resubmit->in_port = ntohs(nar->in_port);
92 resubmit->table_id = nar->table;
97 output_reg_from_openflow(const struct nx_action_output_reg *naor,
100 struct ofpact_output_reg *output_reg;
102 if (!is_all_zeros(naor->zero, sizeof naor->zero)) {
103 return OFPERR_OFPBAC_BAD_ARGUMENT;
106 output_reg = ofpact_put_OUTPUT_REG(out);
107 output_reg->src.field = mf_from_nxm_header(ntohl(naor->src));
108 output_reg->src.ofs = nxm_decode_ofs(naor->ofs_nbits);
109 output_reg->src.n_bits = nxm_decode_n_bits(naor->ofs_nbits);
110 output_reg->max_len = ntohs(naor->max_len);
112 return mf_check_src(&output_reg->src, NULL);
116 fin_timeout_from_openflow(const struct nx_action_fin_timeout *naft,
119 struct ofpact_fin_timeout *oft;
121 oft = ofpact_put_FIN_TIMEOUT(out);
122 oft->fin_idle_timeout = ntohs(naft->fin_idle_timeout);
123 oft->fin_hard_timeout = ntohs(naft->fin_hard_timeout);
127 controller_from_openflow(const struct nx_action_controller *nac,
130 struct ofpact_controller *oc;
132 oc = ofpact_put_CONTROLLER(out);
133 oc->max_len = ntohs(nac->max_len);
134 oc->controller_id = ntohs(nac->controller_id);
135 oc->reason = nac->reason;
139 metadata_from_nxast(const struct nx_action_write_metadata *nawm,
142 struct ofpact_metadata *om;
144 if (!is_all_zeros(nawm->zeros, sizeof nawm->zeros)) {
145 return OFPERR_NXBRC_MUST_BE_ZERO;
148 om = ofpact_put_WRITE_METADATA(out);
149 om->metadata = nawm->metadata;
150 om->mask = nawm->mask;
156 note_from_openflow(const struct nx_action_note *nan, struct ofpbuf *out)
158 struct ofpact_note *note;
161 length = ntohs(nan->len) - offsetof(struct nx_action_note, note);
162 note = ofpact_put(out, OFPACT_NOTE,
163 offsetof(struct ofpact_note, data) + length);
164 note->length = length;
165 memcpy(note->data, nan->note, length);
169 dec_ttl_from_openflow(struct ofpbuf *out, enum ofputil_action_code compat)
172 struct ofpact_cnt_ids *ids;
173 enum ofperr error = 0;
175 ids = ofpact_put_DEC_TTL(out);
176 ids->ofpact.compat = compat;
177 ids->n_controllers = 1;
178 ofpbuf_put(out, &id, sizeof id);
180 ofpact_update_len(out, &ids->ofpact);
185 dec_ttl_cnt_ids_from_openflow(const struct nx_action_cnt_ids *nac_ids,
188 struct ofpact_cnt_ids *ids;
192 ids = ofpact_put_DEC_TTL(out);
193 ids->ofpact.compat = OFPUTIL_NXAST_DEC_TTL_CNT_IDS;
194 ids->n_controllers = ntohs(nac_ids->n_controllers);
195 ids_size = ntohs(nac_ids->len) - sizeof *nac_ids;
197 if (!is_all_zeros(nac_ids->zeros, sizeof nac_ids->zeros)) {
198 return OFPERR_NXBRC_MUST_BE_ZERO;
201 if (ids_size < ids->n_controllers * sizeof(ovs_be16)) {
202 VLOG_WARN_RL(&rl, "Nicira action dec_ttl_cnt_ids only has %zu bytes "
203 "allocated for controller ids. %zu bytes are required for "
204 "%"PRIu16" controllers.", ids_size,
205 ids->n_controllers * sizeof(ovs_be16), ids->n_controllers);
206 return OFPERR_OFPBAC_BAD_LEN;
209 for (i = 0; i < ids->n_controllers; i++) {
210 uint16_t id = ntohs(((ovs_be16 *)(nac_ids + 1))[i]);
211 ofpbuf_put(out, &id, sizeof id);
215 ofpact_update_len(out, &ids->ofpact);
221 decode_nxast_action(const union ofp_action *a, enum ofputil_action_code *code)
223 const struct nx_action_header *nah = (const struct nx_action_header *) a;
224 uint16_t len = ntohs(a->header.len);
226 if (len < sizeof(struct nx_action_header)) {
227 return OFPERR_OFPBAC_BAD_LEN;
228 } else if (a->vendor.vendor != CONSTANT_HTONL(NX_VENDOR_ID)) {
229 return OFPERR_OFPBAC_BAD_VENDOR;
232 switch (nah->subtype) {
233 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
234 case CONSTANT_HTONS(ENUM): \
236 ? len >= sizeof(struct STRUCT) \
237 : len == sizeof(struct STRUCT)) { \
238 *code = OFPUTIL_##ENUM; \
241 return OFPERR_OFPBAC_BAD_LEN; \
244 #include "ofp-util.def"
246 case CONSTANT_HTONS(NXAST_SNAT__OBSOLETE):
247 case CONSTANT_HTONS(NXAST_DROP_SPOOFED_ARP__OBSOLETE):
249 return OFPERR_OFPBAC_BAD_TYPE;
253 /* Parses 'a' to determine its type. On success stores the correct type into
254 * '*code' and returns 0. On failure returns an OFPERR_* error code and
255 * '*code' is indeterminate.
257 * The caller must have already verified that 'a''s length is potentially
258 * correct (that is, a->header.len is nonzero and a multiple of sizeof(union
259 * ofp_action) and no longer than the amount of space allocated to 'a').
261 * This function verifies that 'a''s length is correct for the type of action
262 * that it represents. */
264 decode_openflow10_action(const union ofp_action *a,
265 enum ofputil_action_code *code)
268 case CONSTANT_HTONS(OFPAT10_VENDOR):
269 return decode_nxast_action(a, code);
271 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
272 case CONSTANT_HTONS(ENUM): \
273 if (a->header.len == htons(sizeof(struct STRUCT))) { \
274 *code = OFPUTIL_##ENUM; \
277 return OFPERR_OFPBAC_BAD_LEN; \
280 #include "ofp-util.def"
283 return OFPERR_OFPBAC_BAD_TYPE;
288 ofpact_from_nxast(const union ofp_action *a, enum ofputil_action_code code,
291 const struct nx_action_resubmit *nar;
292 const struct nx_action_set_tunnel *nast;
293 const struct nx_action_set_queue *nasq;
294 const struct nx_action_note *nan;
295 const struct nx_action_set_tunnel64 *nast64;
296 const struct nx_action_write_metadata *nawm;
297 struct ofpact_tunnel *tunnel;
298 enum ofperr error = 0;
301 case OFPUTIL_ACTION_INVALID:
302 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
303 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
304 #include "ofp-util.def"
307 case OFPUTIL_NXAST_RESUBMIT:
308 resubmit_from_openflow((const struct nx_action_resubmit *) a, out);
311 case OFPUTIL_NXAST_SET_TUNNEL:
312 nast = (const struct nx_action_set_tunnel *) a;
313 tunnel = ofpact_put_SET_TUNNEL(out);
314 tunnel->ofpact.compat = code;
315 tunnel->tun_id = ntohl(nast->tun_id);
318 case OFPUTIL_NXAST_WRITE_METADATA:
319 nawm = (const struct nx_action_write_metadata *) a;
320 error = metadata_from_nxast(nawm, out);
323 case OFPUTIL_NXAST_SET_QUEUE:
324 nasq = (const struct nx_action_set_queue *) a;
325 ofpact_put_SET_QUEUE(out)->queue_id = ntohl(nasq->queue_id);
328 case OFPUTIL_NXAST_POP_QUEUE:
329 ofpact_put_POP_QUEUE(out);
332 case OFPUTIL_NXAST_REG_MOVE:
333 error = nxm_reg_move_from_openflow(
334 (const struct nx_action_reg_move *) a, out);
337 case OFPUTIL_NXAST_REG_LOAD:
338 error = nxm_reg_load_from_openflow(
339 (const struct nx_action_reg_load *) a, out);
342 case OFPUTIL_NXAST_NOTE:
343 nan = (const struct nx_action_note *) a;
344 note_from_openflow(nan, out);
347 case OFPUTIL_NXAST_SET_TUNNEL64:
348 nast64 = (const struct nx_action_set_tunnel64 *) a;
349 tunnel = ofpact_put_SET_TUNNEL(out);
350 tunnel->ofpact.compat = code;
351 tunnel->tun_id = ntohll(nast64->tun_id);
354 case OFPUTIL_NXAST_MULTIPATH:
355 error = multipath_from_openflow((const struct nx_action_multipath *) a,
356 ofpact_put_MULTIPATH(out));
359 case OFPUTIL_NXAST_BUNDLE:
360 case OFPUTIL_NXAST_BUNDLE_LOAD:
361 error = bundle_from_openflow((const struct nx_action_bundle *) a, out);
364 case OFPUTIL_NXAST_OUTPUT_REG:
365 error = output_reg_from_openflow(
366 (const struct nx_action_output_reg *) a, out);
369 case OFPUTIL_NXAST_RESUBMIT_TABLE:
370 nar = (const struct nx_action_resubmit *) a;
371 error = resubmit_table_from_openflow(nar, out);
374 case OFPUTIL_NXAST_LEARN:
375 error = learn_from_openflow((const struct nx_action_learn *) a, out);
378 case OFPUTIL_NXAST_EXIT:
379 ofpact_put_EXIT(out);
382 case OFPUTIL_NXAST_DEC_TTL:
383 error = dec_ttl_from_openflow(out, code);
386 case OFPUTIL_NXAST_DEC_TTL_CNT_IDS:
387 error = dec_ttl_cnt_ids_from_openflow(
388 (const struct nx_action_cnt_ids *) a, out);
391 case OFPUTIL_NXAST_FIN_TIMEOUT:
392 fin_timeout_from_openflow(
393 (const struct nx_action_fin_timeout *) a, out);
396 case OFPUTIL_NXAST_CONTROLLER:
397 controller_from_openflow((const struct nx_action_controller *) a, out);
400 case OFPUTIL_NXAST_PUSH_MPLS: {
401 struct nx_action_push_mpls *nxapm = (struct nx_action_push_mpls *)a;
402 if (!eth_type_mpls(nxapm->ethertype)) {
403 return OFPERR_OFPBAC_BAD_ARGUMENT;
405 ofpact_put_PUSH_MPLS(out)->ethertype = nxapm->ethertype;
409 case OFPUTIL_NXAST_SET_MPLS_TTL: {
410 struct nx_action_mpls_ttl *nxamt = (struct nx_action_mpls_ttl *)a;
411 ofpact_put_SET_MPLS_TTL(out)->ttl = nxamt->ttl;
415 case OFPUTIL_NXAST_DEC_MPLS_TTL:
416 ofpact_put_DEC_MPLS_TTL(out);
419 case OFPUTIL_NXAST_POP_MPLS: {
420 struct nx_action_pop_mpls *nxapm = (struct nx_action_pop_mpls *)a;
421 if (eth_type_mpls(nxapm->ethertype)) {
422 return OFPERR_OFPBAC_BAD_ARGUMENT;
424 ofpact_put_POP_MPLS(out)->ethertype = nxapm->ethertype;
433 ofpact_from_openflow10(const union ofp_action *a, struct ofpbuf *out)
435 enum ofputil_action_code code;
438 error = decode_openflow10_action(a, &code);
444 case OFPUTIL_ACTION_INVALID:
445 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
446 #include "ofp-util.def"
449 case OFPUTIL_OFPAT10_OUTPUT:
450 return output_from_openflow10(&a->output10, out);
452 case OFPUTIL_OFPAT10_SET_VLAN_VID:
453 if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
454 return OFPERR_OFPBAC_BAD_ARGUMENT;
456 ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
459 case OFPUTIL_OFPAT10_SET_VLAN_PCP:
460 if (a->vlan_pcp.vlan_pcp & ~7) {
461 return OFPERR_OFPBAC_BAD_ARGUMENT;
463 ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
466 case OFPUTIL_OFPAT10_STRIP_VLAN:
467 ofpact_put_STRIP_VLAN(out);
470 case OFPUTIL_OFPAT10_SET_DL_SRC:
471 memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
472 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
475 case OFPUTIL_OFPAT10_SET_DL_DST:
476 memcpy(ofpact_put_SET_ETH_DST(out)->mac,
477 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
480 case OFPUTIL_OFPAT10_SET_NW_SRC:
481 ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
484 case OFPUTIL_OFPAT10_SET_NW_DST:
485 ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
488 case OFPUTIL_OFPAT10_SET_NW_TOS:
489 if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
490 return OFPERR_OFPBAC_BAD_ARGUMENT;
492 ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
495 case OFPUTIL_OFPAT10_SET_TP_SRC:
496 ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
499 case OFPUTIL_OFPAT10_SET_TP_DST:
500 ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
504 case OFPUTIL_OFPAT10_ENQUEUE:
505 error = enqueue_from_openflow10((const struct ofp10_action_enqueue *) a,
509 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
510 #include "ofp-util.def"
511 return ofpact_from_nxast(a, code, out);
517 static inline union ofp_action *
518 action_next(const union ofp_action *a)
520 return ((union ofp_action *) (void *)
521 ((uint8_t *) a + ntohs(a->header.len)));
525 action_is_valid(const union ofp_action *a, size_t n_actions)
527 uint16_t len = ntohs(a->header.len);
528 return (!(len % OFP_ACTION_ALIGN)
530 && len / sizeof *a <= n_actions);
533 /* This macro is careful to check for actions with bad lengths. */
534 #define ACTION_FOR_EACH(ITER, LEFT, ACTIONS, N_ACTIONS) \
535 for ((ITER) = (ACTIONS), (LEFT) = (N_ACTIONS); \
536 (LEFT) > 0 && action_is_valid(ITER, LEFT); \
537 ((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \
538 (ITER) = action_next(ITER)))
541 log_bad_action(const union ofp_action *actions, size_t n_actions, size_t ofs,
544 if (!VLOG_DROP_WARN(&rl)) {
548 ds_put_hex_dump(&s, actions, n_actions * sizeof *actions, 0, false);
549 VLOG_WARN("bad action at offset %#zx (%s):\n%s",
550 ofs * sizeof *actions, ofperr_get_name(error), ds_cstr(&s));
556 ofpacts_from_openflow(const union ofp_action *in, size_t n_in,
558 enum ofperr (*ofpact_from_openflow)(
559 const union ofp_action *a, struct ofpbuf *out))
561 const union ofp_action *a;
564 ACTION_FOR_EACH (a, left, in, n_in) {
565 enum ofperr error = ofpact_from_openflow(a, out);
567 log_bad_action(in, n_in, a - in, error);
572 enum ofperr error = OFPERR_OFPBAC_BAD_LEN;
573 log_bad_action(in, n_in, n_in - left, error);
582 ofpacts_from_openflow10(const union ofp_action *in, size_t n_in,
585 return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow10);
589 ofpacts_pull_actions(struct ofpbuf *openflow, unsigned int actions_len,
590 struct ofpbuf *ofpacts,
591 enum ofperr (*translate)(const union ofp_action *actions,
593 struct ofpbuf *ofpacts))
595 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
596 const union ofp_action *actions;
599 ofpbuf_clear(ofpacts);
601 if (actions_len % OFP_ACTION_ALIGN != 0) {
602 VLOG_WARN_RL(&rl, "OpenFlow message actions length %u is not a "
603 "multiple of %d", actions_len, OFP_ACTION_ALIGN);
604 return OFPERR_OFPBRC_BAD_LEN;
607 actions = ofpbuf_try_pull(openflow, actions_len);
608 if (actions == NULL) {
609 VLOG_WARN_RL(&rl, "OpenFlow message actions length %u exceeds "
610 "remaining message length (%zu)",
611 actions_len, openflow->size);
612 return OFPERR_OFPBRC_BAD_LEN;
615 error = translate(actions, actions_len / OFP_ACTION_ALIGN, ofpacts);
617 ofpbuf_clear(ofpacts);
621 error = ofpacts_verify(ofpacts->data, ofpacts->size);
623 ofpbuf_clear(ofpacts);
628 /* Attempts to convert 'actions_len' bytes of OpenFlow 1.0 actions from the
629 * front of 'openflow' into ofpacts. On success, replaces any existing content
630 * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'.
631 * Returns 0 if successful, otherwise an OpenFlow error.
633 * The parsed actions are valid generically, but they may not be valid in a
634 * specific context. For example, port numbers up to OFPP_MAX are valid
635 * generically, but specific datapaths may only support port numbers in a
636 * smaller range. Use ofpacts_check() to additional check whether actions are
637 * valid in a specific context. */
639 ofpacts_pull_openflow10(struct ofpbuf *openflow, unsigned int actions_len,
640 struct ofpbuf *ofpacts)
642 return ofpacts_pull_actions(openflow, actions_len, ofpacts,
643 ofpacts_from_openflow10);
646 /* OpenFlow 1.1 actions. */
648 /* Parses 'a' to determine its type. On success stores the correct type into
649 * '*code' and returns 0. On failure returns an OFPERR_* error code and
650 * '*code' is indeterminate.
652 * The caller must have already verified that 'a''s length is potentially
653 * correct (that is, a->header.len is nonzero and a multiple of sizeof(union
654 * ofp_action) and no longer than the amount of space allocated to 'a').
656 * This function verifies that 'a''s length is correct for the type of action
657 * that it represents. */
659 decode_openflow11_action(const union ofp_action *a,
660 enum ofputil_action_code *code)
665 case CONSTANT_HTONS(OFPAT11_EXPERIMENTER):
666 return decode_nxast_action(a, code);
668 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
669 case CONSTANT_HTONS(ENUM): \
670 len = ntohs(a->header.len); \
672 ? len >= sizeof(struct STRUCT) \
673 : len == sizeof(struct STRUCT)) { \
674 *code = OFPUTIL_##ENUM; \
677 return OFPERR_OFPBAC_BAD_LEN; \
680 #include "ofp-util.def"
683 return OFPERR_OFPBAC_BAD_TYPE;
688 output_from_openflow11(const struct ofp11_action_output *oao,
691 struct ofpact_output *output;
694 output = ofpact_put_OUTPUT(out);
695 output->max_len = ntohs(oao->max_len);
697 error = ofputil_port_from_ofp11(oao->port, &output->port);
702 return ofputil_check_output_port(output->port, OFPP_MAX);
706 ofpact_from_openflow11(const union ofp_action *a, struct ofpbuf *out)
708 enum ofputil_action_code code;
711 error = decode_openflow11_action(a, &code);
717 case OFPUTIL_ACTION_INVALID:
718 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) case OFPUTIL_##ENUM:
719 #include "ofp-util.def"
722 case OFPUTIL_OFPAT11_OUTPUT:
723 return output_from_openflow11((const struct ofp11_action_output *) a,
726 case OFPUTIL_OFPAT11_SET_VLAN_VID:
727 if (a->vlan_vid.vlan_vid & ~htons(0xfff)) {
728 return OFPERR_OFPBAC_BAD_ARGUMENT;
730 ofpact_put_SET_VLAN_VID(out)->vlan_vid = ntohs(a->vlan_vid.vlan_vid);
733 case OFPUTIL_OFPAT11_SET_VLAN_PCP:
734 if (a->vlan_pcp.vlan_pcp & ~7) {
735 return OFPERR_OFPBAC_BAD_ARGUMENT;
737 ofpact_put_SET_VLAN_PCP(out)->vlan_pcp = a->vlan_pcp.vlan_pcp;
740 case OFPUTIL_OFPAT11_PUSH_VLAN:
741 if (((const struct ofp11_action_push *)a)->ethertype !=
742 htons(ETH_TYPE_VLAN_8021Q)) {
743 /* XXX 802.1AD(QinQ) isn't supported at the moment */
744 return OFPERR_OFPBAC_BAD_ARGUMENT;
746 ofpact_put_PUSH_VLAN(out);
749 case OFPUTIL_OFPAT11_POP_VLAN:
750 ofpact_put_STRIP_VLAN(out);
753 case OFPUTIL_OFPAT11_SET_QUEUE:
754 ofpact_put_SET_QUEUE(out)->queue_id =
755 ntohl(((const struct ofp11_action_set_queue *)a)->queue_id);
758 case OFPUTIL_OFPAT11_SET_DL_SRC:
759 memcpy(ofpact_put_SET_ETH_SRC(out)->mac,
760 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
763 case OFPUTIL_OFPAT11_SET_DL_DST:
764 memcpy(ofpact_put_SET_ETH_DST(out)->mac,
765 ((const struct ofp_action_dl_addr *) a)->dl_addr, ETH_ADDR_LEN);
768 case OFPUTIL_OFPAT11_DEC_NW_TTL:
769 dec_ttl_from_openflow(out, code);
772 case OFPUTIL_OFPAT11_SET_NW_SRC:
773 ofpact_put_SET_IPV4_SRC(out)->ipv4 = a->nw_addr.nw_addr;
776 case OFPUTIL_OFPAT11_SET_NW_DST:
777 ofpact_put_SET_IPV4_DST(out)->ipv4 = a->nw_addr.nw_addr;
780 case OFPUTIL_OFPAT11_SET_NW_TOS:
781 if (a->nw_tos.nw_tos & ~IP_DSCP_MASK) {
782 return OFPERR_OFPBAC_BAD_ARGUMENT;
784 ofpact_put_SET_IPV4_DSCP(out)->dscp = a->nw_tos.nw_tos;
787 case OFPUTIL_OFPAT11_SET_TP_SRC:
788 ofpact_put_SET_L4_SRC_PORT(out)->port = ntohs(a->tp_port.tp_port);
791 case OFPUTIL_OFPAT11_SET_TP_DST:
792 ofpact_put_SET_L4_DST_PORT(out)->port = ntohs(a->tp_port.tp_port);
795 case OFPUTIL_OFPAT12_SET_FIELD:
796 return nxm_reg_load_from_openflow12_set_field(
797 (const struct ofp12_action_set_field *)a, out);
799 case OFPUTIL_OFPAT11_SET_MPLS_TTL: {
800 struct ofp11_action_mpls_ttl *oamt = (struct ofp11_action_mpls_ttl *)a;
801 ofpact_put_SET_MPLS_TTL(out)->ttl = oamt->mpls_ttl;
805 case OFPUTIL_OFPAT11_DEC_MPLS_TTL:
806 ofpact_put_DEC_MPLS_TTL(out);
809 case OFPUTIL_OFPAT11_PUSH_MPLS: {
810 struct ofp11_action_push *oap = (struct ofp11_action_push *)a;
811 if (!eth_type_mpls(oap->ethertype)) {
812 return OFPERR_OFPBAC_BAD_ARGUMENT;
814 ofpact_put_PUSH_MPLS(out)->ethertype = oap->ethertype;
818 case OFPUTIL_OFPAT11_POP_MPLS: {
819 struct ofp11_action_pop_mpls *oapm = (struct ofp11_action_pop_mpls *)a;
820 if (eth_type_mpls(oapm->ethertype)) {
821 return OFPERR_OFPBAC_BAD_ARGUMENT;
823 ofpact_put_POP_MPLS(out)->ethertype = oapm->ethertype;
827 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
828 #include "ofp-util.def"
829 return ofpact_from_nxast(a, code, out);
836 ofpacts_from_openflow11(const union ofp_action *in, size_t n_in,
839 return ofpacts_from_openflow(in, n_in, out, ofpact_from_openflow11);
842 /* OpenFlow 1.1 instructions. */
844 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \
845 static inline const struct STRUCT * \
846 instruction_get_##ENUM(const struct ofp11_instruction *inst)\
848 ovs_assert(inst->type == htons(ENUM)); \
849 return (struct STRUCT *)inst; \
853 instruction_init_##ENUM(struct STRUCT *s) \
855 memset(s, 0, sizeof *s); \
856 s->type = htons(ENUM); \
857 s->len = htons(sizeof *s); \
860 static inline struct STRUCT * \
861 instruction_put_##ENUM(struct ofpbuf *buf) \
863 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
864 instruction_init_##ENUM(s); \
870 struct instruction_type_info {
871 enum ovs_instruction_type type;
875 static const struct instruction_type_info inst_info[] = {
876 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) {OVSINST_##ENUM, NAME},
882 ofpact_instruction_name_from_type(enum ovs_instruction_type type)
884 return inst_info[type].name;
888 ofpact_instruction_type_from_name(const char *name)
890 const struct instruction_type_info *p;
891 for (p = inst_info; p < &inst_info[ARRAY_SIZE(inst_info)]; p++) {
892 if (!strcasecmp(name, p->name)) {
899 static inline struct ofp11_instruction *
900 instruction_next(const struct ofp11_instruction *inst)
902 return ((struct ofp11_instruction *) (void *)
903 ((uint8_t *) inst + ntohs(inst->len)));
907 instruction_is_valid(const struct ofp11_instruction *inst,
908 size_t n_instructions)
910 uint16_t len = ntohs(inst->len);
911 return (!(len % OFP11_INSTRUCTION_ALIGN)
912 && len >= sizeof *inst
913 && len / sizeof *inst <= n_instructions);
916 /* This macro is careful to check for instructions with bad lengths. */
917 #define INSTRUCTION_FOR_EACH(ITER, LEFT, INSTRUCTIONS, N_INSTRUCTIONS) \
918 for ((ITER) = (INSTRUCTIONS), (LEFT) = (N_INSTRUCTIONS); \
919 (LEFT) > 0 && instruction_is_valid(ITER, LEFT); \
920 ((LEFT) -= (ntohs((ITER)->len) \
921 / sizeof(struct ofp11_instruction)), \
922 (ITER) = instruction_next(ITER)))
925 decode_openflow11_instruction(const struct ofp11_instruction *inst,
926 enum ovs_instruction_type *type)
928 uint16_t len = ntohs(inst->len);
930 switch (inst->type) {
931 case CONSTANT_HTONS(OFPIT11_EXPERIMENTER):
932 return OFPERR_OFPBIC_BAD_EXPERIMENTER;
934 #define DEFINE_INST(ENUM, STRUCT, EXTENSIBLE, NAME) \
935 case CONSTANT_HTONS(ENUM): \
937 ? len >= sizeof(struct STRUCT) \
938 : len == sizeof(struct STRUCT)) { \
939 *type = OVSINST_##ENUM; \
942 return OFPERR_OFPBIC_BAD_LEN; \
948 return OFPERR_OFPBIC_UNKNOWN_INST;
953 decode_openflow11_instructions(const struct ofp11_instruction insts[],
955 const struct ofp11_instruction *out[])
957 const struct ofp11_instruction *inst;
960 memset(out, 0, N_OVS_INSTRUCTIONS * sizeof *out);
961 INSTRUCTION_FOR_EACH (inst, left, insts, n_insts) {
962 enum ovs_instruction_type type;
965 error = decode_openflow11_instruction(inst, &type);
971 return OFPERR_OFPBAC_UNSUPPORTED_ORDER; /* No specific code for
972 * a duplicate instruction
979 VLOG_WARN_RL(&rl, "bad instruction format at offset %zu",
980 (n_insts - left) * sizeof *inst);
981 return OFPERR_OFPBIC_BAD_LEN;
987 get_actions_from_instruction(const struct ofp11_instruction *inst,
988 const union ofp_action **actions,
991 *actions = (const union ofp_action *) (inst + 1);
992 *n_actions = (ntohs(inst->len) - sizeof *inst) / OFP11_INSTRUCTION_ALIGN;
995 /* Attempts to convert 'actions_len' bytes of OpenFlow 1.1 actions from the
996 * front of 'openflow' into ofpacts. On success, replaces any existing content
997 * in 'ofpacts' by the converted ofpacts; on failure, clears 'ofpacts'.
998 * Returns 0 if successful, otherwise an OpenFlow error.
1000 * In most places in OpenFlow 1.1 and 1.2, actions appear encapsulated in
1001 * instructions, so you should call ofpacts_pull_openflow11_instructions()
1002 * instead of this function.
1004 * The parsed actions are valid generically, but they may not be valid in a
1005 * specific context. For example, port numbers up to OFPP_MAX are valid
1006 * generically, but specific datapaths may only support port numbers in a
1007 * smaller range. Use ofpacts_check() to additional check whether actions are
1008 * valid in a specific context. */
1010 ofpacts_pull_openflow11_actions(struct ofpbuf *openflow,
1011 unsigned int actions_len,
1012 struct ofpbuf *ofpacts)
1014 return ofpacts_pull_actions(openflow, actions_len, ofpacts,
1015 ofpacts_from_openflow11);
1019 ofpacts_pull_openflow11_instructions(struct ofpbuf *openflow,
1020 unsigned int instructions_len,
1021 struct ofpbuf *ofpacts)
1023 static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(1, 5);
1024 const struct ofp11_instruction *instructions;
1025 const struct ofp11_instruction *insts[N_OVS_INSTRUCTIONS];
1028 ofpbuf_clear(ofpacts);
1030 if (instructions_len % OFP11_INSTRUCTION_ALIGN != 0) {
1031 VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u is not a "
1033 instructions_len, OFP11_INSTRUCTION_ALIGN);
1034 error = OFPERR_OFPBIC_BAD_LEN;
1038 instructions = ofpbuf_try_pull(openflow, instructions_len);
1039 if (instructions == NULL) {
1040 VLOG_WARN_RL(&rl, "OpenFlow message instructions length %u exceeds "
1041 "remaining message length (%zu)",
1042 instructions_len, openflow->size);
1043 error = OFPERR_OFPBIC_BAD_LEN;
1047 error = decode_openflow11_instructions(
1048 instructions, instructions_len / OFP11_INSTRUCTION_ALIGN,
1054 if (insts[OVSINST_OFPIT11_APPLY_ACTIONS]) {
1055 const union ofp_action *actions;
1058 get_actions_from_instruction(insts[OVSINST_OFPIT11_APPLY_ACTIONS],
1059 &actions, &n_actions);
1060 error = ofpacts_from_openflow11(actions, n_actions, ofpacts);
1065 if (insts[OVSINST_OFPIT11_CLEAR_ACTIONS]) {
1066 instruction_get_OFPIT11_CLEAR_ACTIONS(
1067 insts[OVSINST_OFPIT11_CLEAR_ACTIONS]);
1068 ofpact_put_CLEAR_ACTIONS(ofpacts);
1070 /* XXX Write-Actions */
1071 if (insts[OVSINST_OFPIT11_WRITE_METADATA]) {
1072 const struct ofp11_instruction_write_metadata *oiwm;
1073 struct ofpact_metadata *om;
1075 oiwm = (const struct ofp11_instruction_write_metadata *)
1076 insts[OVSINST_OFPIT11_WRITE_METADATA];
1078 om = ofpact_put_WRITE_METADATA(ofpacts);
1079 om->metadata = oiwm->metadata;
1080 om->mask = oiwm->metadata_mask;
1082 if (insts[OVSINST_OFPIT11_GOTO_TABLE]) {
1083 const struct ofp11_instruction_goto_table *oigt;
1084 struct ofpact_goto_table *ogt;
1086 oigt = instruction_get_OFPIT11_GOTO_TABLE(
1087 insts[OVSINST_OFPIT11_GOTO_TABLE]);
1088 ogt = ofpact_put_GOTO_TABLE(ofpacts);
1089 ogt->table_id = oigt->table_id;
1092 if (insts[OVSINST_OFPIT11_WRITE_ACTIONS]) {
1093 error = OFPERR_OFPBIC_UNSUP_INST;
1097 error = ofpacts_verify(ofpacts->data, ofpacts->size);
1100 ofpbuf_clear(ofpacts);
1106 ofpact_check__(const struct ofpact *a, const struct flow *flow, int max_ports,
1109 const struct ofpact_enqueue *enqueue;
1113 return ofputil_check_output_port(ofpact_get_OUTPUT(a)->port,
1116 case OFPACT_CONTROLLER:
1119 case OFPACT_ENQUEUE:
1120 enqueue = ofpact_get_ENQUEUE(a);
1121 if (enqueue->port >= max_ports && enqueue->port != OFPP_IN_PORT
1122 && enqueue->port != OFPP_LOCAL) {
1123 return OFPERR_OFPBAC_BAD_OUT_PORT;
1127 case OFPACT_OUTPUT_REG:
1128 return mf_check_src(&ofpact_get_OUTPUT_REG(a)->src, flow);
1131 return bundle_check(ofpact_get_BUNDLE(a), max_ports, flow);
1133 case OFPACT_SET_VLAN_VID:
1134 case OFPACT_SET_VLAN_PCP:
1135 case OFPACT_STRIP_VLAN:
1136 case OFPACT_PUSH_VLAN:
1137 case OFPACT_SET_ETH_SRC:
1138 case OFPACT_SET_ETH_DST:
1139 case OFPACT_SET_IPV4_SRC:
1140 case OFPACT_SET_IPV4_DST:
1141 case OFPACT_SET_IPV4_DSCP:
1142 case OFPACT_SET_L4_SRC_PORT:
1143 case OFPACT_SET_L4_DST_PORT:
1146 case OFPACT_REG_MOVE:
1147 return nxm_reg_move_check(ofpact_get_REG_MOVE(a), flow);
1149 case OFPACT_REG_LOAD:
1150 if (*dl_type != flow->dl_type) {
1151 struct flow updated_flow = *flow;
1152 updated_flow.dl_type = *dl_type;
1153 return nxm_reg_load_check(ofpact_get_REG_LOAD(a), &updated_flow);
1155 return nxm_reg_load_check(ofpact_get_REG_LOAD(a), flow);
1158 case OFPACT_DEC_TTL:
1159 case OFPACT_SET_MPLS_TTL:
1160 case OFPACT_DEC_MPLS_TTL:
1161 case OFPACT_SET_TUNNEL:
1162 case OFPACT_SET_QUEUE:
1163 case OFPACT_POP_QUEUE:
1164 case OFPACT_FIN_TIMEOUT:
1165 case OFPACT_RESUBMIT:
1169 return learn_check(ofpact_get_LEARN(a), flow);
1171 case OFPACT_MULTIPATH:
1172 return multipath_check(ofpact_get_MULTIPATH(a), flow);
1178 case OFPACT_PUSH_MPLS:
1179 *dl_type = ofpact_get_PUSH_MPLS(a)->ethertype;
1182 case OFPACT_POP_MPLS:
1183 *dl_type = ofpact_get_POP_MPLS(a)->ethertype;
1186 case OFPACT_CLEAR_ACTIONS:
1187 case OFPACT_WRITE_METADATA:
1188 case OFPACT_GOTO_TABLE:
1196 /* Checks that the 'ofpacts_len' bytes of actions in 'ofpacts' are
1197 * appropriate for a packet with the prerequisites satisfied by 'flow' in a
1198 * switch with no more than 'max_ports' ports. */
1200 ofpacts_check(const struct ofpact ofpacts[], size_t ofpacts_len,
1201 const struct flow *flow, int max_ports)
1203 const struct ofpact *a;
1204 ovs_be16 dl_type = flow->dl_type;
1206 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1207 enum ofperr error = ofpact_check__(a, flow, max_ports, &dl_type);
1216 /* Verifies that the 'ofpacts_len' bytes of actions in 'ofpacts' are
1217 * in the appropriate order as defined by the OpenFlow spec. */
1219 ofpacts_verify(const struct ofpact ofpacts[], size_t ofpacts_len)
1221 const struct ofpact *a;
1222 enum ovs_instruction_type inst;
1224 inst = OVSINST_OFPIT11_APPLY_ACTIONS;
1225 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1226 enum ovs_instruction_type next;
1228 if (a->type == OFPACT_CLEAR_ACTIONS) {
1229 next = OVSINST_OFPIT11_CLEAR_ACTIONS;
1230 } else if (a->type == OFPACT_WRITE_METADATA) {
1231 next = OVSINST_OFPIT11_WRITE_METADATA;
1232 } else if (a->type == OFPACT_GOTO_TABLE) {
1233 next = OVSINST_OFPIT11_GOTO_TABLE;
1235 next = OVSINST_OFPIT11_APPLY_ACTIONS;
1238 if (inst != OVSINST_OFPIT11_APPLY_ACTIONS && next <= inst) {
1239 const char *name = ofpact_instruction_name_from_type(inst);
1240 const char *next_name = ofpact_instruction_name_from_type(next);
1243 VLOG_WARN("duplicate %s instruction not allowed, for OpenFlow "
1244 "1.1+ compatibility", name);
1246 VLOG_WARN("invalid instruction ordering: %s must appear "
1247 "before %s, for OpenFlow 1.1+ compatibility",
1250 return OFPERR_OFPBAC_UNSUPPORTED_ORDER;
1259 /* Converting ofpacts to Nicira OpenFlow extensions. */
1262 ofpact_output_reg_to_nxast(const struct ofpact_output_reg *output_reg,
1265 struct nx_action_output_reg *naor = ofputil_put_NXAST_OUTPUT_REG(out);
1267 naor->ofs_nbits = nxm_encode_ofs_nbits(output_reg->src.ofs,
1268 output_reg->src.n_bits);
1269 naor->src = htonl(output_reg->src.field->nxm_header);
1270 naor->max_len = htons(output_reg->max_len);
1274 ofpact_resubmit_to_nxast(const struct ofpact_resubmit *resubmit,
1277 struct nx_action_resubmit *nar;
1279 if (resubmit->table_id == 0xff
1280 && resubmit->ofpact.compat != OFPUTIL_NXAST_RESUBMIT_TABLE) {
1281 nar = ofputil_put_NXAST_RESUBMIT(out);
1283 nar = ofputil_put_NXAST_RESUBMIT_TABLE(out);
1284 nar->table = resubmit->table_id;
1286 nar->in_port = htons(resubmit->in_port);
1290 ofpact_set_tunnel_to_nxast(const struct ofpact_tunnel *tunnel,
1293 uint64_t tun_id = tunnel->tun_id;
1295 if (tun_id <= UINT32_MAX
1296 && tunnel->ofpact.compat != OFPUTIL_NXAST_SET_TUNNEL64) {
1297 ofputil_put_NXAST_SET_TUNNEL(out)->tun_id = htonl(tun_id);
1299 ofputil_put_NXAST_SET_TUNNEL64(out)->tun_id = htonll(tun_id);
1304 ofpact_write_metadata_to_nxast(const struct ofpact_metadata *om,
1307 struct nx_action_write_metadata *nawm;
1309 nawm = ofputil_put_NXAST_WRITE_METADATA(out);
1310 nawm->metadata = om->metadata;
1311 nawm->mask = om->mask;
1315 ofpact_note_to_nxast(const struct ofpact_note *note, struct ofpbuf *out)
1317 size_t start_ofs = out->size;
1318 struct nx_action_note *nan;
1319 unsigned int remainder;
1322 nan = ofputil_put_NXAST_NOTE(out);
1323 out->size -= sizeof nan->note;
1325 ofpbuf_put(out, note->data, note->length);
1327 len = out->size - start_ofs;
1328 remainder = len % OFP_ACTION_ALIGN;
1330 ofpbuf_put_zeros(out, OFP_ACTION_ALIGN - remainder);
1332 nan = (struct nx_action_note *)((char *)out->data + start_ofs);
1333 nan->len = htons(out->size - start_ofs);
1337 ofpact_controller_to_nxast(const struct ofpact_controller *oc,
1340 struct nx_action_controller *nac;
1342 nac = ofputil_put_NXAST_CONTROLLER(out);
1343 nac->max_len = htons(oc->max_len);
1344 nac->controller_id = htons(oc->controller_id);
1345 nac->reason = oc->reason;
1349 ofpact_dec_ttl_to_nxast(const struct ofpact_cnt_ids *oc_ids,
1352 if (oc_ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL) {
1353 ofputil_put_NXAST_DEC_TTL(out);
1355 struct nx_action_cnt_ids *nac_ids =
1356 ofputil_put_NXAST_DEC_TTL_CNT_IDS(out);
1357 int ids_len = ROUND_UP(2 * oc_ids->n_controllers, OFP_ACTION_ALIGN);
1361 nac_ids->len = htons(ntohs(nac_ids->len) + ids_len);
1362 nac_ids->n_controllers = htons(oc_ids->n_controllers);
1364 ids = ofpbuf_put_zeros(out, ids_len);
1365 for (i = 0; i < oc_ids->n_controllers; i++) {
1366 ids[i] = htons(oc_ids->cnt_ids[i]);
1372 ofpact_fin_timeout_to_nxast(const struct ofpact_fin_timeout *fin_timeout,
1375 struct nx_action_fin_timeout *naft = ofputil_put_NXAST_FIN_TIMEOUT(out);
1376 naft->fin_idle_timeout = htons(fin_timeout->fin_idle_timeout);
1377 naft->fin_hard_timeout = htons(fin_timeout->fin_hard_timeout);
1381 ofpact_to_nxast(const struct ofpact *a, struct ofpbuf *out)
1384 case OFPACT_CONTROLLER:
1385 ofpact_controller_to_nxast(ofpact_get_CONTROLLER(a), out);
1388 case OFPACT_OUTPUT_REG:
1389 ofpact_output_reg_to_nxast(ofpact_get_OUTPUT_REG(a), out);
1393 bundle_to_nxast(ofpact_get_BUNDLE(a), out);
1396 case OFPACT_REG_MOVE:
1397 nxm_reg_move_to_nxast(ofpact_get_REG_MOVE(a), out);
1400 case OFPACT_REG_LOAD:
1401 nxm_reg_load_to_nxast(ofpact_get_REG_LOAD(a), out);
1404 case OFPACT_DEC_TTL:
1405 ofpact_dec_ttl_to_nxast(ofpact_get_DEC_TTL(a), out);
1408 case OFPACT_SET_MPLS_TTL:
1409 ofputil_put_NXAST_SET_MPLS_TTL(out)->ttl
1410 = ofpact_get_SET_MPLS_TTL(a)->ttl;
1413 case OFPACT_DEC_MPLS_TTL:
1414 ofputil_put_NXAST_DEC_MPLS_TTL(out);
1417 case OFPACT_SET_TUNNEL:
1418 ofpact_set_tunnel_to_nxast(ofpact_get_SET_TUNNEL(a), out);
1421 case OFPACT_WRITE_METADATA:
1422 ofpact_write_metadata_to_nxast(ofpact_get_WRITE_METADATA(a), out);
1425 case OFPACT_SET_QUEUE:
1426 ofputil_put_NXAST_SET_QUEUE(out)->queue_id
1427 = htonl(ofpact_get_SET_QUEUE(a)->queue_id);
1430 case OFPACT_POP_QUEUE:
1431 ofputil_put_NXAST_POP_QUEUE(out);
1434 case OFPACT_FIN_TIMEOUT:
1435 ofpact_fin_timeout_to_nxast(ofpact_get_FIN_TIMEOUT(a), out);
1438 case OFPACT_RESUBMIT:
1439 ofpact_resubmit_to_nxast(ofpact_get_RESUBMIT(a), out);
1443 learn_to_nxast(ofpact_get_LEARN(a), out);
1446 case OFPACT_MULTIPATH:
1447 multipath_to_nxast(ofpact_get_MULTIPATH(a), out);
1451 ofpact_note_to_nxast(ofpact_get_NOTE(a), out);
1455 ofputil_put_NXAST_EXIT(out);
1458 case OFPACT_PUSH_MPLS:
1459 ofputil_put_NXAST_PUSH_MPLS(out)->ethertype =
1460 ofpact_get_PUSH_MPLS(a)->ethertype;
1463 case OFPACT_POP_MPLS:
1464 ofputil_put_NXAST_POP_MPLS(out)->ethertype =
1465 ofpact_get_POP_MPLS(a)->ethertype;
1469 case OFPACT_ENQUEUE:
1470 case OFPACT_SET_VLAN_VID:
1471 case OFPACT_SET_VLAN_PCP:
1472 case OFPACT_STRIP_VLAN:
1473 case OFPACT_PUSH_VLAN:
1474 case OFPACT_SET_ETH_SRC:
1475 case OFPACT_SET_ETH_DST:
1476 case OFPACT_SET_IPV4_SRC:
1477 case OFPACT_SET_IPV4_DST:
1478 case OFPACT_SET_IPV4_DSCP:
1479 case OFPACT_SET_L4_SRC_PORT:
1480 case OFPACT_SET_L4_DST_PORT:
1481 case OFPACT_CLEAR_ACTIONS:
1482 case OFPACT_GOTO_TABLE:
1487 /* Converting ofpacts to OpenFlow 1.0. */
1490 ofpact_output_to_openflow10(const struct ofpact_output *output,
1493 struct ofp10_action_output *oao;
1495 oao = ofputil_put_OFPAT10_OUTPUT(out);
1496 oao->port = htons(output->port);
1497 oao->max_len = htons(output->max_len);
1501 ofpact_enqueue_to_openflow10(const struct ofpact_enqueue *enqueue,
1504 struct ofp10_action_enqueue *oae;
1506 oae = ofputil_put_OFPAT10_ENQUEUE(out);
1507 oae->port = htons(enqueue->port);
1508 oae->queue_id = htonl(enqueue->queue);
1512 ofpact_to_openflow10(const struct ofpact *a, struct ofpbuf *out)
1516 ofpact_output_to_openflow10(ofpact_get_OUTPUT(a), out);
1519 case OFPACT_ENQUEUE:
1520 ofpact_enqueue_to_openflow10(ofpact_get_ENQUEUE(a), out);
1523 case OFPACT_SET_VLAN_VID:
1524 ofputil_put_OFPAT10_SET_VLAN_VID(out)->vlan_vid
1525 = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid);
1528 case OFPACT_SET_VLAN_PCP:
1529 ofputil_put_OFPAT10_SET_VLAN_PCP(out)->vlan_pcp
1530 = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp;
1533 case OFPACT_STRIP_VLAN:
1534 ofputil_put_OFPAT10_STRIP_VLAN(out);
1537 case OFPACT_SET_ETH_SRC:
1538 memcpy(ofputil_put_OFPAT10_SET_DL_SRC(out)->dl_addr,
1539 ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN);
1542 case OFPACT_SET_ETH_DST:
1543 memcpy(ofputil_put_OFPAT10_SET_DL_DST(out)->dl_addr,
1544 ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN);
1547 case OFPACT_SET_IPV4_SRC:
1548 ofputil_put_OFPAT10_SET_NW_SRC(out)->nw_addr
1549 = ofpact_get_SET_IPV4_SRC(a)->ipv4;
1552 case OFPACT_SET_IPV4_DST:
1553 ofputil_put_OFPAT10_SET_NW_DST(out)->nw_addr
1554 = ofpact_get_SET_IPV4_DST(a)->ipv4;
1557 case OFPACT_SET_IPV4_DSCP:
1558 ofputil_put_OFPAT10_SET_NW_TOS(out)->nw_tos
1559 = ofpact_get_SET_IPV4_DSCP(a)->dscp;
1562 case OFPACT_SET_L4_SRC_PORT:
1563 ofputil_put_OFPAT10_SET_TP_SRC(out)->tp_port
1564 = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
1567 case OFPACT_SET_L4_DST_PORT:
1568 ofputil_put_OFPAT10_SET_TP_DST(out)->tp_port
1569 = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
1572 case OFPACT_PUSH_VLAN:
1573 case OFPACT_CLEAR_ACTIONS:
1574 case OFPACT_GOTO_TABLE:
1578 case OFPACT_CONTROLLER:
1579 case OFPACT_OUTPUT_REG:
1581 case OFPACT_REG_MOVE:
1582 case OFPACT_REG_LOAD:
1583 case OFPACT_DEC_TTL:
1584 case OFPACT_SET_MPLS_TTL:
1585 case OFPACT_DEC_MPLS_TTL:
1586 case OFPACT_SET_TUNNEL:
1587 case OFPACT_WRITE_METADATA:
1588 case OFPACT_SET_QUEUE:
1589 case OFPACT_POP_QUEUE:
1590 case OFPACT_FIN_TIMEOUT:
1591 case OFPACT_RESUBMIT:
1593 case OFPACT_MULTIPATH:
1596 case OFPACT_PUSH_MPLS:
1597 case OFPACT_POP_MPLS:
1598 ofpact_to_nxast(a, out);
1603 /* Converts the 'ofpacts_len' bytes of ofpacts in 'ofpacts' into OpenFlow 1.0
1604 * actions in 'openflow', appending the actions to any existing data in
1607 ofpacts_put_openflow10(const struct ofpact ofpacts[], size_t ofpacts_len,
1608 struct ofpbuf *openflow)
1610 const struct ofpact *a;
1612 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1613 ofpact_to_openflow10(a, openflow);
1617 /* Converting ofpacts to OpenFlow 1.1. */
1620 ofpact_output_to_openflow11(const struct ofpact_output *output,
1623 struct ofp11_action_output *oao;
1625 oao = ofputil_put_OFPAT11_OUTPUT(out);
1626 oao->port = ofputil_port_to_ofp11(output->port);
1627 oao->max_len = htons(output->max_len);
1631 ofpact_dec_ttl_to_openflow11(const struct ofpact_cnt_ids *dec_ttl,
1634 if (dec_ttl->n_controllers == 1 && dec_ttl->cnt_ids[0] == 0
1635 && (!dec_ttl->ofpact.compat ||
1636 dec_ttl->ofpact.compat == OFPUTIL_OFPAT11_DEC_NW_TTL)) {
1637 ofputil_put_OFPAT11_DEC_NW_TTL(out);
1639 ofpact_dec_ttl_to_nxast(dec_ttl, out);
1644 ofpact_to_openflow11(const struct ofpact *a, struct ofpbuf *out)
1648 return ofpact_output_to_openflow11(ofpact_get_OUTPUT(a), out);
1650 case OFPACT_ENQUEUE:
1654 case OFPACT_SET_VLAN_VID:
1655 ofputil_put_OFPAT11_SET_VLAN_VID(out)->vlan_vid
1656 = htons(ofpact_get_SET_VLAN_VID(a)->vlan_vid);
1659 case OFPACT_SET_VLAN_PCP:
1660 ofputil_put_OFPAT11_SET_VLAN_PCP(out)->vlan_pcp
1661 = ofpact_get_SET_VLAN_PCP(a)->vlan_pcp;
1664 case OFPACT_STRIP_VLAN:
1665 ofputil_put_OFPAT11_POP_VLAN(out);
1668 case OFPACT_PUSH_VLAN:
1669 /* XXX ETH_TYPE_VLAN_8021AD case */
1670 ofputil_put_OFPAT11_PUSH_VLAN(out)->ethertype =
1671 htons(ETH_TYPE_VLAN_8021Q);
1674 case OFPACT_SET_QUEUE:
1675 ofputil_put_OFPAT11_SET_QUEUE(out)->queue_id
1676 = htonl(ofpact_get_SET_QUEUE(a)->queue_id);
1679 case OFPACT_SET_ETH_SRC:
1680 memcpy(ofputil_put_OFPAT11_SET_DL_SRC(out)->dl_addr,
1681 ofpact_get_SET_ETH_SRC(a)->mac, ETH_ADDR_LEN);
1684 case OFPACT_SET_ETH_DST:
1685 memcpy(ofputil_put_OFPAT11_SET_DL_DST(out)->dl_addr,
1686 ofpact_get_SET_ETH_DST(a)->mac, ETH_ADDR_LEN);
1689 case OFPACT_SET_IPV4_SRC:
1690 ofputil_put_OFPAT11_SET_NW_SRC(out)->nw_addr
1691 = ofpact_get_SET_IPV4_SRC(a)->ipv4;
1694 case OFPACT_SET_IPV4_DST:
1695 ofputil_put_OFPAT11_SET_NW_DST(out)->nw_addr
1696 = ofpact_get_SET_IPV4_DST(a)->ipv4;
1699 case OFPACT_SET_IPV4_DSCP:
1700 ofputil_put_OFPAT11_SET_NW_TOS(out)->nw_tos
1701 = ofpact_get_SET_IPV4_DSCP(a)->dscp;
1704 case OFPACT_SET_L4_SRC_PORT:
1705 ofputil_put_OFPAT11_SET_TP_SRC(out)->tp_port
1706 = htons(ofpact_get_SET_L4_SRC_PORT(a)->port);
1709 case OFPACT_SET_L4_DST_PORT:
1710 ofputil_put_OFPAT11_SET_TP_DST(out)->tp_port
1711 = htons(ofpact_get_SET_L4_DST_PORT(a)->port);
1714 case OFPACT_DEC_TTL:
1715 ofpact_dec_ttl_to_openflow11(ofpact_get_DEC_TTL(a), out);
1718 case OFPACT_SET_MPLS_TTL:
1719 ofputil_put_OFPAT11_SET_MPLS_TTL(out)->mpls_ttl
1720 = ofpact_get_SET_MPLS_TTL(a)->ttl;
1723 case OFPACT_DEC_MPLS_TTL:
1724 ofputil_put_OFPAT11_DEC_MPLS_TTL(out);
1727 case OFPACT_WRITE_METADATA:
1728 /* OpenFlow 1.1 uses OFPIT_WRITE_METADATA to express this action. */
1731 case OFPACT_PUSH_MPLS:
1732 ofputil_put_OFPAT11_PUSH_MPLS(out)->ethertype =
1733 ofpact_get_PUSH_MPLS(a)->ethertype;
1736 case OFPACT_POP_MPLS:
1737 ofputil_put_OFPAT11_POP_MPLS(out)->ethertype =
1738 ofpact_get_POP_MPLS(a)->ethertype;
1742 case OFPACT_CLEAR_ACTIONS:
1743 case OFPACT_GOTO_TABLE:
1746 case OFPACT_CONTROLLER:
1747 case OFPACT_OUTPUT_REG:
1749 case OFPACT_REG_MOVE:
1750 case OFPACT_REG_LOAD:
1751 case OFPACT_SET_TUNNEL:
1752 case OFPACT_POP_QUEUE:
1753 case OFPACT_FIN_TIMEOUT:
1754 case OFPACT_RESUBMIT:
1756 case OFPACT_MULTIPATH:
1759 ofpact_to_nxast(a, out);
1764 /* Converts the ofpacts in 'ofpacts' (terminated by OFPACT_END) into OpenFlow
1765 * 1.1 actions in 'openflow', appending the actions to any existing data in
1768 ofpacts_put_openflow11_actions(const struct ofpact ofpacts[],
1769 size_t ofpacts_len, struct ofpbuf *openflow)
1771 const struct ofpact *a;
1772 size_t start_size = openflow->size;
1774 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1775 ofpact_to_openflow11(a, openflow);
1778 return openflow->size - start_size;
1782 ofpacts_update_instruction_actions(struct ofpbuf *openflow, size_t ofs)
1784 struct ofp11_instruction_actions *oia;
1786 /* Update the instruction's length (or, if it's empty, delete it). */
1787 oia = ofpbuf_at_assert(openflow, ofs, sizeof *oia);
1788 if (openflow->size > ofs + sizeof *oia) {
1789 oia->len = htons(openflow->size - ofs);
1791 openflow->size = ofs;
1796 ofpacts_put_openflow11_instructions(const struct ofpact ofpacts[],
1798 struct ofpbuf *openflow)
1800 const struct ofpact *a;
1802 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1803 /* XXX Write-Actions */
1805 if (a->type == OFPACT_CLEAR_ACTIONS) {
1806 instruction_put_OFPIT11_CLEAR_ACTIONS(openflow);
1807 } else if (a->type == OFPACT_GOTO_TABLE) {
1808 struct ofp11_instruction_goto_table *oigt;
1810 oigt = instruction_put_OFPIT11_GOTO_TABLE(openflow);
1811 oigt->table_id = ofpact_get_GOTO_TABLE(a)->table_id;
1812 memset(oigt->pad, 0, sizeof oigt->pad);
1813 } else if (a->type == OFPACT_WRITE_METADATA) {
1814 const struct ofpact_metadata *om;
1815 struct ofp11_instruction_write_metadata *oiwm;
1817 om = ofpact_get_WRITE_METADATA(a);
1818 oiwm = instruction_put_OFPIT11_WRITE_METADATA(openflow);
1819 oiwm->metadata = om->metadata;
1820 oiwm->metadata_mask = om->mask;
1821 } else if (!ofpact_is_instruction(a)) {
1823 const size_t ofs = openflow->size;
1824 const size_t ofpacts_len_left =
1825 (uint8_t*)ofpact_end(ofpacts, ofpacts_len) - (uint8_t*)a;
1826 const struct ofpact *action;
1827 const struct ofpact *processed = a;
1829 instruction_put_OFPIT11_APPLY_ACTIONS(openflow);
1830 OFPACT_FOR_EACH(action, a, ofpacts_len_left) {
1831 if (ofpact_is_instruction(action)) {
1834 ofpact_to_openflow11(action, openflow);
1837 ofpacts_update_instruction_actions(openflow, ofs);
1843 /* Returns true if 'action' outputs to 'port', false otherwise. */
1845 ofpact_outputs_to_port(const struct ofpact *ofpact, uint16_t port)
1847 switch (ofpact->type) {
1849 return ofpact_get_OUTPUT(ofpact)->port == port;
1850 case OFPACT_ENQUEUE:
1851 return ofpact_get_ENQUEUE(ofpact)->port == port;
1852 case OFPACT_CONTROLLER:
1853 return port == OFPP_CONTROLLER;
1855 case OFPACT_OUTPUT_REG:
1857 case OFPACT_SET_VLAN_VID:
1858 case OFPACT_SET_VLAN_PCP:
1859 case OFPACT_STRIP_VLAN:
1860 case OFPACT_PUSH_VLAN:
1861 case OFPACT_SET_ETH_SRC:
1862 case OFPACT_SET_ETH_DST:
1863 case OFPACT_SET_IPV4_SRC:
1864 case OFPACT_SET_IPV4_DST:
1865 case OFPACT_SET_IPV4_DSCP:
1866 case OFPACT_SET_L4_SRC_PORT:
1867 case OFPACT_SET_L4_DST_PORT:
1868 case OFPACT_REG_MOVE:
1869 case OFPACT_REG_LOAD:
1870 case OFPACT_DEC_TTL:
1871 case OFPACT_SET_MPLS_TTL:
1872 case OFPACT_DEC_MPLS_TTL:
1873 case OFPACT_SET_TUNNEL:
1874 case OFPACT_WRITE_METADATA:
1875 case OFPACT_SET_QUEUE:
1876 case OFPACT_POP_QUEUE:
1877 case OFPACT_FIN_TIMEOUT:
1878 case OFPACT_RESUBMIT:
1880 case OFPACT_MULTIPATH:
1883 case OFPACT_PUSH_MPLS:
1884 case OFPACT_POP_MPLS:
1885 case OFPACT_CLEAR_ACTIONS:
1886 case OFPACT_GOTO_TABLE:
1892 /* Returns true if any action in the 'ofpacts_len' bytes of 'ofpacts' outputs
1893 * to 'port', false otherwise. */
1895 ofpacts_output_to_port(const struct ofpact *ofpacts, size_t ofpacts_len,
1898 const struct ofpact *a;
1900 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
1901 if (ofpact_outputs_to_port(a, port)) {
1910 ofpacts_equal(const struct ofpact *a, size_t a_len,
1911 const struct ofpact *b, size_t b_len)
1913 return a_len == b_len && !memcmp(a, b, a_len);
1916 /* Formatting ofpacts. */
1919 print_note(const struct ofpact_note *note, struct ds *string)
1923 ds_put_cstr(string, "note:");
1924 for (i = 0; i < note->length; i++) {
1926 ds_put_char(string, '.');
1928 ds_put_format(string, "%02"PRIx8, note->data[i]);
1933 print_dec_ttl(const struct ofpact_cnt_ids *ids,
1938 ds_put_cstr(s, "dec_ttl");
1939 if (ids->ofpact.compat == OFPUTIL_NXAST_DEC_TTL_CNT_IDS) {
1940 ds_put_cstr(s, "(");
1941 for (i = 0; i < ids->n_controllers; i++) {
1943 ds_put_cstr(s, ",");
1945 ds_put_format(s, "%"PRIu16, ids->cnt_ids[i]);
1947 ds_put_cstr(s, ")");
1952 print_fin_timeout(const struct ofpact_fin_timeout *fin_timeout,
1955 ds_put_cstr(s, "fin_timeout(");
1956 if (fin_timeout->fin_idle_timeout) {
1957 ds_put_format(s, "idle_timeout=%"PRIu16",",
1958 fin_timeout->fin_idle_timeout);
1960 if (fin_timeout->fin_hard_timeout) {
1961 ds_put_format(s, "hard_timeout=%"PRIu16",",
1962 fin_timeout->fin_hard_timeout);
1965 ds_put_char(s, ')');
1969 ofpact_format(const struct ofpact *a, struct ds *s)
1971 const struct ofpact_enqueue *enqueue;
1972 const struct ofpact_resubmit *resubmit;
1973 const struct ofpact_controller *controller;
1974 const struct ofpact_metadata *metadata;
1975 const struct ofpact_tunnel *tunnel;
1980 port = ofpact_get_OUTPUT(a)->port;
1981 if (port < OFPP_MAX) {
1982 ds_put_format(s, "output:%"PRIu16, port);
1984 ofputil_format_port(port, s);
1985 if (port == OFPP_CONTROLLER) {
1986 ds_put_format(s, ":%"PRIu16, ofpact_get_OUTPUT(a)->max_len);
1991 case OFPACT_CONTROLLER:
1992 controller = ofpact_get_CONTROLLER(a);
1993 if (controller->reason == OFPR_ACTION &&
1994 controller->controller_id == 0) {
1995 ds_put_format(s, "CONTROLLER:%"PRIu16,
1996 ofpact_get_CONTROLLER(a)->max_len);
1998 enum ofp_packet_in_reason reason = controller->reason;
2000 ds_put_cstr(s, "controller(");
2001 if (reason != OFPR_ACTION) {
2002 ds_put_format(s, "reason=%s,",
2003 ofputil_packet_in_reason_to_string(reason));
2005 if (controller->max_len != UINT16_MAX) {
2006 ds_put_format(s, "max_len=%"PRIu16",", controller->max_len);
2008 if (controller->controller_id != 0) {
2009 ds_put_format(s, "id=%"PRIu16",", controller->controller_id);
2012 ds_put_char(s, ')');
2016 case OFPACT_ENQUEUE:
2017 enqueue = ofpact_get_ENQUEUE(a);
2018 ds_put_format(s, "enqueue:");
2019 ofputil_format_port(enqueue->port, s);
2020 ds_put_format(s, "q%"PRIu32, enqueue->queue);
2023 case OFPACT_OUTPUT_REG:
2024 ds_put_cstr(s, "output:");
2025 mf_format_subfield(&ofpact_get_OUTPUT_REG(a)->src, s);
2029 bundle_format(ofpact_get_BUNDLE(a), s);
2032 case OFPACT_SET_VLAN_VID:
2033 ds_put_format(s, "mod_vlan_vid:%"PRIu16,
2034 ofpact_get_SET_VLAN_VID(a)->vlan_vid);
2037 case OFPACT_SET_VLAN_PCP:
2038 ds_put_format(s, "mod_vlan_pcp:%"PRIu8,
2039 ofpact_get_SET_VLAN_PCP(a)->vlan_pcp);
2042 case OFPACT_STRIP_VLAN:
2043 ds_put_cstr(s, "strip_vlan");
2046 case OFPACT_PUSH_VLAN:
2047 /* XXX 802.1AD case*/
2048 ds_put_format(s, "push_vlan:%#"PRIx16, ETH_TYPE_VLAN_8021Q);
2051 case OFPACT_SET_ETH_SRC:
2052 ds_put_format(s, "mod_dl_src:"ETH_ADDR_FMT,
2053 ETH_ADDR_ARGS(ofpact_get_SET_ETH_SRC(a)->mac));
2056 case OFPACT_SET_ETH_DST:
2057 ds_put_format(s, "mod_dl_dst:"ETH_ADDR_FMT,
2058 ETH_ADDR_ARGS(ofpact_get_SET_ETH_DST(a)->mac));
2061 case OFPACT_SET_IPV4_SRC:
2062 ds_put_format(s, "mod_nw_src:"IP_FMT,
2063 IP_ARGS(ofpact_get_SET_IPV4_SRC(a)->ipv4));
2066 case OFPACT_SET_IPV4_DST:
2067 ds_put_format(s, "mod_nw_dst:"IP_FMT,
2068 IP_ARGS(ofpact_get_SET_IPV4_DST(a)->ipv4));
2071 case OFPACT_SET_IPV4_DSCP:
2072 ds_put_format(s, "mod_nw_tos:%d", ofpact_get_SET_IPV4_DSCP(a)->dscp);
2075 case OFPACT_SET_L4_SRC_PORT:
2076 ds_put_format(s, "mod_tp_src:%d", ofpact_get_SET_L4_SRC_PORT(a)->port);
2079 case OFPACT_SET_L4_DST_PORT:
2080 ds_put_format(s, "mod_tp_dst:%d", ofpact_get_SET_L4_DST_PORT(a)->port);
2083 case OFPACT_REG_MOVE:
2084 nxm_format_reg_move(ofpact_get_REG_MOVE(a), s);
2087 case OFPACT_REG_LOAD:
2088 nxm_format_reg_load(ofpact_get_REG_LOAD(a), s);
2091 case OFPACT_DEC_TTL:
2092 print_dec_ttl(ofpact_get_DEC_TTL(a), s);
2095 case OFPACT_SET_MPLS_TTL:
2096 ds_put_format(s, "set_mpls_ttl(%"PRIu8")",
2097 ofpact_get_SET_MPLS_TTL(a)->ttl);
2100 case OFPACT_DEC_MPLS_TTL:
2101 ds_put_cstr(s, "dec_mpls_ttl");
2104 case OFPACT_SET_TUNNEL:
2105 tunnel = ofpact_get_SET_TUNNEL(a);
2106 ds_put_format(s, "set_tunnel%s:%#"PRIx64,
2107 (tunnel->tun_id > UINT32_MAX
2108 || a->compat == OFPUTIL_NXAST_SET_TUNNEL64 ? "64" : ""),
2112 case OFPACT_SET_QUEUE:
2113 ds_put_format(s, "set_queue:%"PRIu32,
2114 ofpact_get_SET_QUEUE(a)->queue_id);
2117 case OFPACT_POP_QUEUE:
2118 ds_put_cstr(s, "pop_queue");
2121 case OFPACT_FIN_TIMEOUT:
2122 print_fin_timeout(ofpact_get_FIN_TIMEOUT(a), s);
2125 case OFPACT_RESUBMIT:
2126 resubmit = ofpact_get_RESUBMIT(a);
2127 if (resubmit->in_port != OFPP_IN_PORT && resubmit->table_id == 255) {
2128 ds_put_cstr(s, "resubmit:");
2129 ofputil_format_port(resubmit->in_port, s);
2131 ds_put_format(s, "resubmit(");
2132 if (resubmit->in_port != OFPP_IN_PORT) {
2133 ofputil_format_port(resubmit->in_port, s);
2135 ds_put_char(s, ',');
2136 if (resubmit->table_id != 255) {
2137 ds_put_format(s, "%"PRIu8, resubmit->table_id);
2139 ds_put_char(s, ')');
2144 learn_format(ofpact_get_LEARN(a), s);
2147 case OFPACT_MULTIPATH:
2148 multipath_format(ofpact_get_MULTIPATH(a), s);
2152 print_note(ofpact_get_NOTE(a), s);
2155 case OFPACT_PUSH_MPLS:
2156 ds_put_format(s, "push_mpls:0x%04"PRIx16,
2157 ntohs(ofpact_get_PUSH_MPLS(a)->ethertype));
2160 case OFPACT_POP_MPLS:
2161 ds_put_format(s, "pop_mpls:0x%04"PRIx16,
2162 ntohs(ofpact_get_POP_MPLS(a)->ethertype));
2166 ds_put_cstr(s, "exit");
2169 case OFPACT_CLEAR_ACTIONS:
2170 ds_put_format(s, "%s",
2171 ofpact_instruction_name_from_type(
2172 OVSINST_OFPIT11_CLEAR_ACTIONS));
2175 case OFPACT_WRITE_METADATA:
2176 metadata = ofpact_get_WRITE_METADATA(a);
2177 ds_put_format(s, "%s:%#"PRIx64,
2178 ofpact_instruction_name_from_type(
2179 OVSINST_OFPIT11_WRITE_METADATA),
2180 ntohll(metadata->metadata));
2181 if (metadata->mask != htonll(UINT64_MAX)) {
2182 ds_put_format(s, "/%#"PRIx64, ntohll(metadata->mask));
2186 case OFPACT_GOTO_TABLE:
2187 ds_put_format(s, "%s:%"PRIu8,
2188 ofpact_instruction_name_from_type(
2189 OVSINST_OFPIT11_GOTO_TABLE),
2190 ofpact_get_GOTO_TABLE(a)->table_id);
2195 /* Appends a string representing the 'ofpacts_len' bytes of ofpacts in
2196 * 'ofpacts' to 'string'. */
2198 ofpacts_format(const struct ofpact *ofpacts, size_t ofpacts_len,
2201 ds_put_cstr(string, "actions=");
2203 ds_put_cstr(string, "drop");
2205 const struct ofpact *a;
2207 OFPACT_FOR_EACH (a, ofpacts, ofpacts_len) {
2209 ds_put_cstr(string, ",");
2212 /* XXX write-actions */
2213 ofpact_format(a, string);
2218 /* Internal use by helpers. */
2221 ofpact_put(struct ofpbuf *ofpacts, enum ofpact_type type, size_t len)
2223 struct ofpact *ofpact;
2225 ofpact_pad(ofpacts);
2226 ofpact = ofpacts->l2 = ofpbuf_put_uninit(ofpacts, len);
2227 ofpact_init(ofpact, type, len);
2232 ofpact_init(struct ofpact *ofpact, enum ofpact_type type, size_t len)
2234 memset(ofpact, 0, len);
2235 ofpact->type = type;
2236 ofpact->compat = OFPUTIL_ACTION_INVALID;
2240 /* Updates 'ofpact->len' to the number of bytes in the tail of 'ofpacts'
2241 * starting at 'ofpact'.
2243 * This is the correct way to update a variable-length ofpact's length after
2244 * adding the variable-length part of the payload. (See the large comment
2245 * near the end of ofp-actions.h for more information.) */
2247 ofpact_update_len(struct ofpbuf *ofpacts, struct ofpact *ofpact)
2249 ovs_assert(ofpact == ofpacts->l2);
2250 ofpact->len = (char *) ofpbuf_tail(ofpacts) - (char *) ofpact;
2253 /* Pads out 'ofpacts' to a multiple of OFPACT_ALIGNTO bytes in length. Each
2254 * ofpact_put_<ENUM>() calls this function automatically beforehand, but the
2255 * client must call this itself after adding the final ofpact to an array of
2258 * (The consequences of failing to call this function are probably not dire.
2259 * OFPACT_FOR_EACH will calculate a pointer beyond the end of the ofpacts, but
2260 * not dereference it. That's undefined behavior, technically, but it will not
2261 * cause a real problem on common systems. Still, it seems better to call
2264 ofpact_pad(struct ofpbuf *ofpacts)
2266 unsigned int rem = ofpacts->size % OFPACT_ALIGNTO;
2268 ofpbuf_put_zeros(ofpacts, OFPACT_ALIGNTO - rem);
2273 ofpact_set_field_init(struct ofpact_reg_load *load, const struct mf_field *mf,
2276 load->ofpact.compat = OFPUTIL_OFPAT12_SET_FIELD;
2277 load->dst.field = mf;
2279 load->dst.n_bits = mf->n_bits;
2280 bitwise_copy(src, mf->n_bytes, load->dst.ofs,
2281 &load->subvalue, sizeof load->subvalue, 0, mf->n_bits);