2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 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-print.h"
22 #include <sys/types.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
27 #include "byte-order.h"
28 #include "classifier.h"
29 #include "dynamic-string.h"
31 #include "meta-flow.h"
32 #include "multipath.h"
36 #include "ofp-actions.h"
37 #include "ofp-errors.h"
41 #include "openflow/netronome-ext.h"
44 #include "tun-metadata.h"
45 #include "unaligned.h"
46 #include "type-props.h"
47 #include "openvswitch/vlog.h"
50 VLOG_DEFINE_THIS_MODULE(ofp_util);
52 /* Rate limit for OpenFlow message parse errors. These always indicate a bug
53 * in the peer and so there's not much point in showing a lot of them. */
54 static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
56 static enum ofputil_table_vacancy ofputil_decode_table_vacancy(
57 ovs_be32 config, enum ofp_version);
58 static enum ofputil_table_eviction ofputil_decode_table_eviction(
59 ovs_be32 config, enum ofp_version);
60 static ovs_be32 ofputil_encode_table_config(enum ofputil_table_miss,
61 enum ofputil_table_eviction,
62 enum ofputil_table_vacancy,
65 struct ofp_prop_header {
70 struct ofp_prop_experimenter {
71 ovs_be16 type; /* OFP*_EXPERIMENTER. */
72 ovs_be16 length; /* Length in bytes of this property. */
73 ovs_be32 experimenter; /* Experimenter ID which takes the same form as
74 * in struct ofp_experimenter_header. */
75 ovs_be32 exp_type; /* Experimenter defined. */
78 /* Pulls a property, beginning with struct ofp_prop_header, from the beginning
79 * of 'msg'. Stores the type of the property in '*typep' and, if 'property' is
80 * nonnull, the entire property, including the header, in '*property'. Returns
81 * 0 if successful, otherwise an error code.
83 * This function pulls the property's stated size padded out to a multiple of
84 * 'alignment' bytes. The common case in OpenFlow is an 'alignment' of 8, so
85 * you can use ofputil_pull_property() for that case. */
87 ofputil_pull_property__(struct ofpbuf *msg, struct ofpbuf *property,
88 unsigned int alignment, uint16_t *typep)
90 struct ofp_prop_header *oph;
91 unsigned int padded_len;
94 if (msg->size < sizeof *oph) {
95 return OFPERR_OFPBPC_BAD_LEN;
99 len = ntohs(oph->len);
100 padded_len = ROUND_UP(len, alignment);
101 if (len < sizeof *oph || padded_len > msg->size) {
102 return OFPERR_OFPBPC_BAD_LEN;
105 *typep = ntohs(oph->type);
107 ofpbuf_use_const(property, msg->data, len);
109 ofpbuf_pull(msg, padded_len);
113 /* Pulls a property, beginning with struct ofp_prop_header, from the beginning
114 * of 'msg'. Stores the type of the property in '*typep' and, if 'property' is
115 * nonnull, the entire property, including the header, in '*property'. Returns
116 * 0 if successful, otherwise an error code.
118 * This function pulls the property's stated size padded out to a multiple of
119 * 8 bytes, which is the common case for OpenFlow properties. */
121 ofputil_pull_property(struct ofpbuf *msg, struct ofpbuf *property,
124 return ofputil_pull_property__(msg, property, 8, typep);
127 static void OVS_PRINTF_FORMAT(2, 3)
128 log_property(bool loose, const char *message, ...)
130 enum vlog_level level = loose ? VLL_DBG : VLL_WARN;
131 if (!vlog_should_drop(THIS_MODULE, level, &bad_ofmsg_rl)) {
134 va_start(args, message);
135 vlog_valist(THIS_MODULE, level, message, args);
141 ofputil_check_mask(uint16_t type, uint32_t mask)
144 case OFPACPT_PACKET_IN_SLAVE:
145 case OFPACPT_PACKET_IN_MASTER:
146 if (mask > MAXIMUM_MASK_PACKET_IN) {
147 return OFPERR_OFPACFC_INVALID;
151 case OFPACPT_FLOW_REMOVED_SLAVE:
152 case OFPACPT_FLOW_REMOVED_MASTER:
153 if (mask > MAXIMUM_MASK_FLOW_REMOVED) {
154 return OFPERR_OFPACFC_INVALID;
158 case OFPACPT_PORT_STATUS_SLAVE:
159 case OFPACPT_PORT_STATUS_MASTER:
160 if (mask > MAXIMUM_MASK_PORT_STATUS) {
161 return OFPERR_OFPACFC_INVALID;
165 case OFPACPT_ROLE_STATUS_SLAVE:
166 case OFPACPT_ROLE_STATUS_MASTER:
167 if (mask > MAXIMUM_MASK_ROLE_STATUS) {
168 return OFPERR_OFPACFC_INVALID;
172 case OFPACPT_TABLE_STATUS_SLAVE:
173 case OFPACPT_TABLE_STATUS_MASTER:
174 if ((mask < MINIMUM_MASK_TABLE_STATUS && mask != 0) |
175 (mask > MAXIMUM_MASK_TABLE_STATUS)) {
176 return OFPERR_OFPACFC_INVALID;
180 case OFPACPT_REQUESTFORWARD_SLAVE:
181 case OFPACPT_REQUESTFORWARD_MASTER:
182 if (mask > MAXIMUM_MASK_REQUESTFORWARD) {
183 return OFPERR_OFPACFC_INVALID;
191 start_property(struct ofpbuf *msg, uint16_t type)
193 size_t start_ofs = msg->size;
194 struct ofp_prop_header *oph;
196 oph = ofpbuf_put_uninit(msg, sizeof *oph);
197 oph->type = htons(type);
198 oph->len = htons(4); /* May be updated later by end_property(). */
203 end_property(struct ofpbuf *msg, size_t start_ofs)
205 struct ofp_prop_header *oph;
207 oph = ofpbuf_at_assert(msg, start_ofs, sizeof *oph);
208 oph->len = htons(msg->size - start_ofs);
209 ofpbuf_padto(msg, ROUND_UP(msg->size, 8));
213 put_bitmap_properties(struct ofpbuf *msg, uint64_t bitmap)
215 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
216 start_property(msg, rightmost_1bit_idx(bitmap));
220 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
221 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
224 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
225 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
226 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
227 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
230 ofputil_wcbits_to_netmask(int wcbits)
233 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
236 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
237 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
238 * between 0 and 32 inclusive.
240 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
241 * still be in the valid range but isn't otherwise meaningful. */
243 ofputil_netmask_to_wcbits(ovs_be32 netmask)
245 return 32 - ip_count_cidr_bits(netmask);
248 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
249 * flow_wildcards in 'wc' for use in struct match. It is the caller's
250 * responsibility to handle the special case where the flow match's dl_vlan is
251 * set to OFP_VLAN_NONE. */
253 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
255 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35);
257 /* Initialize most of wc. */
258 flow_wildcards_init_catchall(wc);
260 if (!(ofpfw & OFPFW10_IN_PORT)) {
261 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
264 if (!(ofpfw & OFPFW10_NW_TOS)) {
265 wc->masks.nw_tos |= IP_DSCP_MASK;
268 if (!(ofpfw & OFPFW10_NW_PROTO)) {
269 wc->masks.nw_proto = UINT8_MAX;
271 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
272 >> OFPFW10_NW_SRC_SHIFT);
273 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
274 >> OFPFW10_NW_DST_SHIFT);
276 if (!(ofpfw & OFPFW10_TP_SRC)) {
277 wc->masks.tp_src = OVS_BE16_MAX;
279 if (!(ofpfw & OFPFW10_TP_DST)) {
280 wc->masks.tp_dst = OVS_BE16_MAX;
283 if (!(ofpfw & OFPFW10_DL_SRC)) {
284 WC_MASK_FIELD(wc, dl_src);
286 if (!(ofpfw & OFPFW10_DL_DST)) {
287 WC_MASK_FIELD(wc, dl_dst);
289 if (!(ofpfw & OFPFW10_DL_TYPE)) {
290 wc->masks.dl_type = OVS_BE16_MAX;
294 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
295 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
297 if (!(ofpfw & OFPFW10_DL_VLAN)) {
298 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
302 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
304 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
307 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
309 /* Initialize match->wc. */
310 memset(&match->flow, 0, sizeof match->flow);
311 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
313 /* Initialize most of match->flow. */
314 match->flow.nw_src = ofmatch->nw_src;
315 match->flow.nw_dst = ofmatch->nw_dst;
316 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
317 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
318 match->flow.tp_src = ofmatch->tp_src;
319 match->flow.tp_dst = ofmatch->tp_dst;
320 match->flow.dl_src = ofmatch->dl_src;
321 match->flow.dl_dst = ofmatch->dl_dst;
322 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
323 match->flow.nw_proto = ofmatch->nw_proto;
325 /* Translate VLANs. */
326 if (!(ofpfw & OFPFW10_DL_VLAN) &&
327 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
328 /* Match only packets without 802.1Q header.
330 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
332 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
333 * because we can't have a specific PCP without an 802.1Q header.
334 * However, older versions of OVS treated this as matching packets
335 * withut an 802.1Q header, so we do here too. */
336 match->flow.vlan_tci = htons(0);
337 match->wc.masks.vlan_tci = htons(0xffff);
339 ovs_be16 vid, pcp, tci;
342 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
343 hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
345 tci = vid | pcp | htons(VLAN_CFI);
346 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
350 match_zero_wildcarded_fields(match);
353 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
355 ofputil_match_to_ofp10_match(const struct match *match,
356 struct ofp10_match *ofmatch)
358 const struct flow_wildcards *wc = &match->wc;
361 /* Figure out most OpenFlow wildcards. */
363 if (!wc->masks.in_port.ofp_port) {
364 ofpfw |= OFPFW10_IN_PORT;
366 if (!wc->masks.dl_type) {
367 ofpfw |= OFPFW10_DL_TYPE;
369 if (!wc->masks.nw_proto) {
370 ofpfw |= OFPFW10_NW_PROTO;
372 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
373 << OFPFW10_NW_SRC_SHIFT);
374 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
375 << OFPFW10_NW_DST_SHIFT);
376 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
377 ofpfw |= OFPFW10_NW_TOS;
379 if (!wc->masks.tp_src) {
380 ofpfw |= OFPFW10_TP_SRC;
382 if (!wc->masks.tp_dst) {
383 ofpfw |= OFPFW10_TP_DST;
385 if (eth_addr_is_zero(wc->masks.dl_src)) {
386 ofpfw |= OFPFW10_DL_SRC;
388 if (eth_addr_is_zero(wc->masks.dl_dst)) {
389 ofpfw |= OFPFW10_DL_DST;
392 /* Translate VLANs. */
393 ofmatch->dl_vlan = htons(0);
394 ofmatch->dl_vlan_pcp = 0;
395 if (match->wc.masks.vlan_tci == htons(0)) {
396 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
397 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
398 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
399 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
401 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
402 ofpfw |= OFPFW10_DL_VLAN;
404 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
407 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
408 ofpfw |= OFPFW10_DL_VLAN_PCP;
410 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
414 /* Compose most of the match structure. */
415 ofmatch->wildcards = htonl(ofpfw);
416 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
417 ofmatch->dl_src = match->flow.dl_src;
418 ofmatch->dl_dst = match->flow.dl_dst;
419 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
420 ofmatch->nw_src = match->flow.nw_src;
421 ofmatch->nw_dst = match->flow.nw_dst;
422 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
423 ofmatch->nw_proto = match->flow.nw_proto;
424 ofmatch->tp_src = match->flow.tp_src;
425 ofmatch->tp_dst = match->flow.tp_dst;
426 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
427 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
431 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
432 uint16_t *padded_match_len)
434 struct ofp11_match_header *omh = buf->data;
437 if (buf->size < sizeof *omh) {
438 return OFPERR_OFPBMC_BAD_LEN;
441 match_len = ntohs(omh->length);
443 switch (ntohs(omh->type)) {
444 case OFPMT_STANDARD: {
445 struct ofp11_match *om;
447 if (match_len != sizeof *om || buf->size < sizeof *om) {
448 return OFPERR_OFPBMC_BAD_LEN;
450 om = ofpbuf_pull(buf, sizeof *om);
451 if (padded_match_len) {
452 *padded_match_len = match_len;
454 return ofputil_match_from_ofp11_match(om, match);
458 if (padded_match_len) {
459 *padded_match_len = ROUND_UP(match_len, 8);
461 return oxm_pull_match(buf, match);
464 return OFPERR_OFPBMC_BAD_TYPE;
468 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
469 * Returns 0 if successful, otherwise an OFPERR_* value. */
471 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
474 uint16_t wc = ntohl(ofmatch->wildcards);
475 bool ipv4, arp, rarp;
477 match_init_catchall(match);
479 if (!(wc & OFPFW11_IN_PORT)) {
483 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
485 return OFPERR_OFPBMC_BAD_VALUE;
487 match_set_in_port(match, ofp_port);
490 match_set_dl_src_masked(match, ofmatch->dl_src,
491 eth_addr_invert(ofmatch->dl_src_mask));
492 match_set_dl_dst_masked(match, ofmatch->dl_dst,
493 eth_addr_invert(ofmatch->dl_dst_mask));
495 if (!(wc & OFPFW11_DL_VLAN)) {
496 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
497 /* Match only packets without a VLAN tag. */
498 match->flow.vlan_tci = htons(0);
499 match->wc.masks.vlan_tci = OVS_BE16_MAX;
501 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
502 /* Match any packet with a VLAN tag regardless of VID. */
503 match->flow.vlan_tci = htons(VLAN_CFI);
504 match->wc.masks.vlan_tci = htons(VLAN_CFI);
505 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
506 /* Match only packets with the specified VLAN VID. */
507 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
508 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
511 return OFPERR_OFPBMC_BAD_VALUE;
514 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
515 if (ofmatch->dl_vlan_pcp <= 7) {
516 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
518 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
521 return OFPERR_OFPBMC_BAD_VALUE;
527 if (!(wc & OFPFW11_DL_TYPE)) {
528 match_set_dl_type(match,
529 ofputil_dl_type_from_openflow(ofmatch->dl_type));
532 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
533 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
534 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
536 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
537 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
539 return OFPERR_OFPBMC_BAD_VALUE;
542 match_set_nw_dscp(match, ofmatch->nw_tos);
545 if (ipv4 || arp || rarp) {
546 if (!(wc & OFPFW11_NW_PROTO)) {
547 match_set_nw_proto(match, ofmatch->nw_proto);
549 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
550 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
553 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
554 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
555 switch (match->flow.nw_proto) {
557 /* "A.2.3 Flow Match Structures" in OF1.1 says:
559 * The tp_src and tp_dst fields will be ignored unless the
560 * network protocol specified is as TCP, UDP or SCTP.
562 * but I'm pretty sure we should support ICMP too, otherwise
563 * that's a regression from OF1.0. */
564 if (!(wc & OFPFW11_TP_SRC)) {
565 uint16_t icmp_type = ntohs(ofmatch->tp_src);
566 if (icmp_type < 0x100) {
567 match_set_icmp_type(match, icmp_type);
569 return OFPERR_OFPBMC_BAD_FIELD;
572 if (!(wc & OFPFW11_TP_DST)) {
573 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
574 if (icmp_code < 0x100) {
575 match_set_icmp_code(match, icmp_code);
577 return OFPERR_OFPBMC_BAD_FIELD;
585 if (!(wc & (OFPFW11_TP_SRC))) {
586 match_set_tp_src(match, ofmatch->tp_src);
588 if (!(wc & (OFPFW11_TP_DST))) {
589 match_set_tp_dst(match, ofmatch->tp_dst);
594 /* OF1.1 says explicitly to ignore this. */
599 if (eth_type_mpls(match->flow.dl_type)) {
600 if (!(wc & OFPFW11_MPLS_LABEL)) {
601 match_set_mpls_label(match, 0, ofmatch->mpls_label);
603 if (!(wc & OFPFW11_MPLS_TC)) {
604 match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
608 match_set_metadata_masked(match, ofmatch->metadata,
609 ~ofmatch->metadata_mask);
614 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
616 ofputil_match_to_ofp11_match(const struct match *match,
617 struct ofp11_match *ofmatch)
621 memset(ofmatch, 0, sizeof *ofmatch);
622 ofmatch->omh.type = htons(OFPMT_STANDARD);
623 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
625 if (!match->wc.masks.in_port.ofp_port) {
626 wc |= OFPFW11_IN_PORT;
628 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
631 ofmatch->dl_src = match->flow.dl_src;
632 ofmatch->dl_src_mask = eth_addr_invert(match->wc.masks.dl_src);
633 ofmatch->dl_dst = match->flow.dl_dst;
634 ofmatch->dl_dst_mask = eth_addr_invert(match->wc.masks.dl_dst);
636 if (match->wc.masks.vlan_tci == htons(0)) {
637 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
638 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
639 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
640 ofmatch->dl_vlan = htons(OFPVID11_NONE);
641 wc |= OFPFW11_DL_VLAN_PCP;
643 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
644 ofmatch->dl_vlan = htons(OFPVID11_ANY);
646 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
649 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
650 wc |= OFPFW11_DL_VLAN_PCP;
652 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
656 if (!match->wc.masks.dl_type) {
657 wc |= OFPFW11_DL_TYPE;
659 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
662 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
663 wc |= OFPFW11_NW_TOS;
665 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
668 if (!match->wc.masks.nw_proto) {
669 wc |= OFPFW11_NW_PROTO;
671 ofmatch->nw_proto = match->flow.nw_proto;
674 ofmatch->nw_src = match->flow.nw_src;
675 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
676 ofmatch->nw_dst = match->flow.nw_dst;
677 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
679 if (!match->wc.masks.tp_src) {
680 wc |= OFPFW11_TP_SRC;
682 ofmatch->tp_src = match->flow.tp_src;
685 if (!match->wc.masks.tp_dst) {
686 wc |= OFPFW11_TP_DST;
688 ofmatch->tp_dst = match->flow.tp_dst;
691 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
692 wc |= OFPFW11_MPLS_LABEL;
694 ofmatch->mpls_label = htonl(mpls_lse_to_label(
695 match->flow.mpls_lse[0]));
698 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
699 wc |= OFPFW11_MPLS_TC;
701 ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
704 ofmatch->metadata = match->flow.metadata;
705 ofmatch->metadata_mask = ~match->wc.masks.metadata;
707 ofmatch->wildcards = htonl(wc);
710 /* Returns the "typical" length of a match for 'protocol', for use in
711 * estimating space to preallocate. */
713 ofputil_match_typical_len(enum ofputil_protocol protocol)
716 case OFPUTIL_P_OF10_STD:
717 case OFPUTIL_P_OF10_STD_TID:
718 return sizeof(struct ofp10_match);
720 case OFPUTIL_P_OF10_NXM:
721 case OFPUTIL_P_OF10_NXM_TID:
722 return NXM_TYPICAL_LEN;
724 case OFPUTIL_P_OF11_STD:
725 return sizeof(struct ofp11_match);
727 case OFPUTIL_P_OF12_OXM:
728 case OFPUTIL_P_OF13_OXM:
729 case OFPUTIL_P_OF14_OXM:
730 case OFPUTIL_P_OF15_OXM:
731 return NXM_TYPICAL_LEN;
738 /* Appends to 'b' an struct ofp11_match_header followed by a match that
739 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
740 * data appended out to a multiple of 8. 'protocol' must be one that is usable
741 * in OpenFlow 1.1 or later.
743 * This function can cause 'b''s data to be reallocated.
745 * Returns the number of bytes appended to 'b', excluding the padding. Never
748 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
749 enum ofputil_protocol protocol)
752 case OFPUTIL_P_OF10_STD:
753 case OFPUTIL_P_OF10_STD_TID:
754 case OFPUTIL_P_OF10_NXM:
755 case OFPUTIL_P_OF10_NXM_TID:
758 case OFPUTIL_P_OF11_STD: {
759 struct ofp11_match *om;
761 /* Make sure that no padding is needed. */
762 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
764 om = ofpbuf_put_uninit(b, sizeof *om);
765 ofputil_match_to_ofp11_match(match, om);
769 case OFPUTIL_P_OF12_OXM:
770 case OFPUTIL_P_OF13_OXM:
771 case OFPUTIL_P_OF14_OXM:
772 case OFPUTIL_P_OF15_OXM:
773 return oxm_put_match(b, match,
774 ofputil_protocol_to_ofp_version(protocol));
780 /* Given a 'dl_type' value in the format used in struct flow, returns the
781 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
784 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
786 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
787 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
791 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
792 * structure, returns the corresponding 'dl_type' value for use in struct
795 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
797 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
798 ? htons(FLOW_DL_TYPE_NONE)
804 struct proto_abbrev {
805 enum ofputil_protocol protocol;
809 /* Most users really don't care about some of the differences between
810 * protocols. These abbreviations help with that. */
811 static const struct proto_abbrev proto_abbrevs[] = {
812 { OFPUTIL_P_ANY, "any" },
813 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
814 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
815 { OFPUTIL_P_ANY_OXM, "OXM" },
817 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
819 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
828 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
830 /* Returns the set of ofputil_protocols that are supported with the given
831 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
832 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
833 * if 'version' is not supported or outside the valid range. */
834 enum ofputil_protocol
835 ofputil_protocols_from_ofp_version(enum ofp_version version)
839 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
841 return OFPUTIL_P_OF11_STD;
843 return OFPUTIL_P_OF12_OXM;
845 return OFPUTIL_P_OF13_OXM;
847 return OFPUTIL_P_OF14_OXM;
849 return OFPUTIL_P_OF15_OXM;
855 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
856 * connection that has negotiated the given 'version'. 'version' should
857 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
858 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
859 * outside the valid range. */
860 enum ofputil_protocol
861 ofputil_protocol_from_ofp_version(enum ofp_version version)
863 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
866 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
867 * etc.) that corresponds to 'protocol'. */
869 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
872 case OFPUTIL_P_OF10_STD:
873 case OFPUTIL_P_OF10_STD_TID:
874 case OFPUTIL_P_OF10_NXM:
875 case OFPUTIL_P_OF10_NXM_TID:
876 return OFP10_VERSION;
877 case OFPUTIL_P_OF11_STD:
878 return OFP11_VERSION;
879 case OFPUTIL_P_OF12_OXM:
880 return OFP12_VERSION;
881 case OFPUTIL_P_OF13_OXM:
882 return OFP13_VERSION;
883 case OFPUTIL_P_OF14_OXM:
884 return OFP14_VERSION;
885 case OFPUTIL_P_OF15_OXM:
886 return OFP15_VERSION;
892 /* Returns a bitmap of OpenFlow versions that are supported by at
893 * least one of the 'protocols'. */
895 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
899 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
900 enum ofputil_protocol protocol = rightmost_1bit(protocols);
902 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
908 /* Returns the set of protocols that are supported on top of the
909 * OpenFlow versions included in 'bitmap'. */
910 enum ofputil_protocol
911 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
913 enum ofputil_protocol protocols = 0;
915 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
916 enum ofp_version version = rightmost_1bit_idx(bitmap);
918 protocols |= ofputil_protocols_from_ofp_version(version);
924 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
927 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
929 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
932 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
933 * extension turned on or off if 'enable' is true or false, respectively.
935 * This extension is only useful for protocols whose "standard" version does
936 * not allow specific tables to be modified. In particular, this is true of
937 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
938 * specifies a table ID and so there is no need for such an extension. When
939 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
940 * extension, this function just returns its 'protocol' argument unchanged
941 * regardless of the value of 'enable'. */
942 enum ofputil_protocol
943 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
946 case OFPUTIL_P_OF10_STD:
947 case OFPUTIL_P_OF10_STD_TID:
948 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
950 case OFPUTIL_P_OF10_NXM:
951 case OFPUTIL_P_OF10_NXM_TID:
952 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
954 case OFPUTIL_P_OF11_STD:
955 return OFPUTIL_P_OF11_STD;
957 case OFPUTIL_P_OF12_OXM:
958 return OFPUTIL_P_OF12_OXM;
960 case OFPUTIL_P_OF13_OXM:
961 return OFPUTIL_P_OF13_OXM;
963 case OFPUTIL_P_OF14_OXM:
964 return OFPUTIL_P_OF14_OXM;
966 case OFPUTIL_P_OF15_OXM:
967 return OFPUTIL_P_OF15_OXM;
974 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
975 * some extension to a standard protocol version, the return value is the
976 * standard version of that protocol without any extension. If 'protocol' is a
977 * standard protocol version, returns 'protocol' unchanged. */
978 enum ofputil_protocol
979 ofputil_protocol_to_base(enum ofputil_protocol protocol)
981 return ofputil_protocol_set_tid(protocol, false);
984 /* Returns 'new_base' with any extensions taken from 'cur'. */
985 enum ofputil_protocol
986 ofputil_protocol_set_base(enum ofputil_protocol cur,
987 enum ofputil_protocol new_base)
989 bool tid = (cur & OFPUTIL_P_TID) != 0;
992 case OFPUTIL_P_OF10_STD:
993 case OFPUTIL_P_OF10_STD_TID:
994 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
996 case OFPUTIL_P_OF10_NXM:
997 case OFPUTIL_P_OF10_NXM_TID:
998 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
1000 case OFPUTIL_P_OF11_STD:
1001 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
1003 case OFPUTIL_P_OF12_OXM:
1004 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
1006 case OFPUTIL_P_OF13_OXM:
1007 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
1009 case OFPUTIL_P_OF14_OXM:
1010 return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
1012 case OFPUTIL_P_OF15_OXM:
1013 return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
1020 /* Returns a string form of 'protocol', if a simple form exists (that is, if
1021 * 'protocol' is either a single protocol or it is a combination of protocols
1022 * that have a single abbreviation). Otherwise, returns NULL. */
1024 ofputil_protocol_to_string(enum ofputil_protocol protocol)
1026 const struct proto_abbrev *p;
1028 /* Use a "switch" statement for single-bit names so that we get a compiler
1029 * warning if we forget any. */
1031 case OFPUTIL_P_OF10_NXM:
1032 return "NXM-table_id";
1034 case OFPUTIL_P_OF10_NXM_TID:
1035 return "NXM+table_id";
1037 case OFPUTIL_P_OF10_STD:
1038 return "OpenFlow10-table_id";
1040 case OFPUTIL_P_OF10_STD_TID:
1041 return "OpenFlow10+table_id";
1043 case OFPUTIL_P_OF11_STD:
1044 return "OpenFlow11";
1046 case OFPUTIL_P_OF12_OXM:
1047 return "OXM-OpenFlow12";
1049 case OFPUTIL_P_OF13_OXM:
1050 return "OXM-OpenFlow13";
1052 case OFPUTIL_P_OF14_OXM:
1053 return "OXM-OpenFlow14";
1055 case OFPUTIL_P_OF15_OXM:
1056 return "OXM-OpenFlow15";
1059 /* Check abbreviations. */
1060 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1061 if (protocol == p->protocol) {
1069 /* Returns a string that represents 'protocols'. The return value might be a
1070 * comma-separated list if 'protocols' doesn't have a simple name. The return
1071 * value is "none" if 'protocols' is 0.
1073 * The caller must free the returned string (with free()). */
1075 ofputil_protocols_to_string(enum ofputil_protocol protocols)
1079 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
1080 if (protocols == 0) {
1081 return xstrdup("none");
1086 const struct proto_abbrev *p;
1090 ds_put_char(&s, ',');
1093 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1094 if ((protocols & p->protocol) == p->protocol) {
1095 ds_put_cstr(&s, p->name);
1096 protocols &= ~p->protocol;
1101 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1102 enum ofputil_protocol bit = 1u << i;
1104 if (protocols & bit) {
1105 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
1114 return ds_steal_cstr(&s);
1117 static enum ofputil_protocol
1118 ofputil_protocol_from_string__(const char *s, size_t n)
1120 const struct proto_abbrev *p;
1123 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1124 enum ofputil_protocol bit = 1u << i;
1125 const char *name = ofputil_protocol_to_string(bit);
1127 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
1132 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1133 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
1141 /* Returns the nonempty set of protocols represented by 's', which can be a
1142 * single protocol name or abbreviation or a comma-separated list of them.
1144 * Aborts the program with an error message if 's' is invalid. */
1145 enum ofputil_protocol
1146 ofputil_protocols_from_string(const char *s)
1148 const char *orig_s = s;
1149 enum ofputil_protocol protocols;
1153 enum ofputil_protocol p;
1156 n = strcspn(s, ",");
1162 p = ofputil_protocol_from_string__(s, n);
1164 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
1172 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
1178 ofputil_version_from_string(const char *s)
1180 if (!strcasecmp(s, "OpenFlow10")) {
1181 return OFP10_VERSION;
1183 if (!strcasecmp(s, "OpenFlow11")) {
1184 return OFP11_VERSION;
1186 if (!strcasecmp(s, "OpenFlow12")) {
1187 return OFP12_VERSION;
1189 if (!strcasecmp(s, "OpenFlow13")) {
1190 return OFP13_VERSION;
1192 if (!strcasecmp(s, "OpenFlow14")) {
1193 return OFP14_VERSION;
1195 if (!strcasecmp(s, "OpenFlow15")) {
1196 return OFP15_VERSION;
1202 is_delimiter(unsigned char c)
1204 return isspace(c) || c == ',';
1208 ofputil_versions_from_string(const char *s)
1211 uint32_t bitmap = 0;
1218 if (is_delimiter(s[i])) {
1223 while (s[i + j] && !is_delimiter(s[i + j])) {
1226 key = xmemdup0(s + i, j);
1227 version = ofputil_version_from_string(key);
1229 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1232 bitmap |= 1u << version;
1240 ofputil_versions_from_strings(char ** const s, size_t count)
1242 uint32_t bitmap = 0;
1245 int version = ofputil_version_from_string(s[count]);
1247 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1249 bitmap |= 1u << version;
1257 ofputil_version_to_string(enum ofp_version ofp_version)
1259 switch (ofp_version) {
1261 return "OpenFlow10";
1263 return "OpenFlow11";
1265 return "OpenFlow12";
1267 return "OpenFlow13";
1269 return "OpenFlow14";
1271 return "OpenFlow15";
1278 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1280 switch (packet_in_format) {
1281 case NXPIF_OPENFLOW10:
1290 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1292 switch (packet_in_format) {
1293 case NXPIF_OPENFLOW10:
1294 return "openflow10";
1303 ofputil_packet_in_format_from_string(const char *s)
1305 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1306 : !strcmp(s, "nxm") ? NXPIF_NXM
1311 ofputil_format_version(struct ds *msg, enum ofp_version version)
1313 ds_put_format(msg, "0x%02x", version);
1317 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1319 ds_put_cstr(msg, ofputil_version_to_string(version));
1323 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1324 void (*format_version)(struct ds *msg,
1328 format_version(msg, raw_ctz(bitmap));
1329 bitmap = zero_rightmost_1bit(bitmap);
1331 ds_put_cstr(msg, ", ");
1337 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1339 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1343 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1345 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1349 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1350 uint32_t *allowed_versionsp)
1352 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1353 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1354 uint32_t allowed_versions;
1356 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1360 /* Only use the first 32-bit element of the bitmap as that is all the
1361 * current implementation supports. Subsequent elements are ignored which
1362 * should have no effect on session negotiation until Open vSwitch supports
1363 * wire-protocol versions greater than 31.
1365 allowed_versions = ntohl(bitmap[0]);
1367 if (allowed_versions & 1) {
1368 /* There's no OpenFlow version 0. */
1369 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1371 allowed_versions &= ~1u;
1374 if (!allowed_versions) {
1375 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1376 "version (between 0x01 and 0x1f)");
1380 *allowed_versionsp = allowed_versions;
1385 version_bitmap_from_version(uint8_t ofp_version)
1387 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1390 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1391 * the set of OpenFlow versions for which 'oh' announces support.
1393 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1394 * successful, and thus '*allowed_versions' is always initialized. However, it
1395 * returns false if 'oh' contains some data that could not be fully understood,
1396 * true if 'oh' was completely parsed. */
1398 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1403 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1404 ofpbuf_pull(&msg, sizeof *oh);
1406 *allowed_versions = version_bitmap_from_version(oh->version);
1408 const struct ofp_hello_elem_header *oheh;
1411 if (msg.size < sizeof *oheh) {
1416 len = ntohs(oheh->length);
1417 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1421 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1422 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1430 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1431 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1433 should_send_version_bitmap(uint32_t allowed_versions)
1435 return !is_pow2((allowed_versions >> 1) + 1);
1438 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1439 * versions in the 'allowed_versions' bitmaps and returns the message. */
1441 ofputil_encode_hello(uint32_t allowed_versions)
1443 enum ofp_version ofp_version;
1446 ofp_version = leftmost_1bit_idx(allowed_versions);
1447 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1449 if (should_send_version_bitmap(allowed_versions)) {
1450 struct ofp_hello_elem_header *oheh;
1453 map_len = sizeof allowed_versions;
1454 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1455 oheh->type = htons(OFPHET_VERSIONBITMAP);
1456 oheh->length = htons(map_len + sizeof *oheh);
1457 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1459 ofpmsg_update_length(msg);
1465 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1466 * protocol is 'current', at least partly transitions the protocol to 'want'.
1467 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1468 * connection if the switch processes the returned message correctly. (If
1469 * '*next != want' then the caller will have to iterate.)
1471 * If 'current == want', or if it is not possible to transition from 'current'
1472 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1473 * protocol versions), returns NULL and stores 'current' in '*next'. */
1475 ofputil_encode_set_protocol(enum ofputil_protocol current,
1476 enum ofputil_protocol want,
1477 enum ofputil_protocol *next)
1479 enum ofp_version cur_version, want_version;
1480 enum ofputil_protocol cur_base, want_base;
1481 bool cur_tid, want_tid;
1483 cur_version = ofputil_protocol_to_ofp_version(current);
1484 want_version = ofputil_protocol_to_ofp_version(want);
1485 if (cur_version != want_version) {
1490 cur_base = ofputil_protocol_to_base(current);
1491 want_base = ofputil_protocol_to_base(want);
1492 if (cur_base != want_base) {
1493 *next = ofputil_protocol_set_base(current, want_base);
1495 switch (want_base) {
1496 case OFPUTIL_P_OF10_NXM:
1497 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1499 case OFPUTIL_P_OF10_STD:
1500 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1502 case OFPUTIL_P_OF11_STD:
1503 case OFPUTIL_P_OF12_OXM:
1504 case OFPUTIL_P_OF13_OXM:
1505 case OFPUTIL_P_OF14_OXM:
1506 case OFPUTIL_P_OF15_OXM:
1507 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1508 * verified above that we're not trying to change versions. */
1511 case OFPUTIL_P_OF10_STD_TID:
1512 case OFPUTIL_P_OF10_NXM_TID:
1517 cur_tid = (current & OFPUTIL_P_TID) != 0;
1518 want_tid = (want & OFPUTIL_P_TID) != 0;
1519 if (cur_tid != want_tid) {
1520 *next = ofputil_protocol_set_tid(current, want_tid);
1521 return ofputil_make_flow_mod_table_id(want_tid);
1524 ovs_assert(current == want);
1530 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1531 * format to 'nxff'. */
1533 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1535 struct nx_set_flow_format *sff;
1538 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1540 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1541 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1542 sff->format = htonl(nxff);
1547 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1549 enum ofputil_protocol
1550 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1552 switch (flow_format) {
1553 case NXFF_OPENFLOW10:
1554 return OFPUTIL_P_OF10_STD;
1557 return OFPUTIL_P_OF10_NXM;
1564 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1566 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1568 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1571 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1574 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1576 switch (flow_format) {
1577 case NXFF_OPENFLOW10:
1578 return "openflow10";
1587 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1588 enum nx_packet_in_format packet_in_format)
1590 struct nx_set_packet_in_format *spif;
1593 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1594 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1595 spif->format = htonl(packet_in_format);
1600 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1601 * extension on or off (according to 'flow_mod_table_id'). */
1603 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1605 struct nx_flow_mod_table_id *nfmti;
1608 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1609 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1610 nfmti->set = flow_mod_table_id;
1614 struct ofputil_flow_mod_flag {
1616 enum ofp_version min_version, max_version;
1617 enum ofputil_flow_mod_flags flag;
1620 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1621 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1622 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1623 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1625 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1626 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1627 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1632 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1633 enum ofp_flow_mod_command command,
1634 enum ofp_version version,
1635 enum ofputil_flow_mod_flags *flagsp)
1637 uint16_t raw_flags = ntohs(raw_flags_);
1638 const struct ofputil_flow_mod_flag *f;
1641 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1642 if (raw_flags & f->raw_flag
1643 && version >= f->min_version
1644 && (!f->max_version || version <= f->max_version)) {
1645 raw_flags &= ~f->raw_flag;
1650 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1653 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1654 * resets counters. */
1655 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1656 && command == OFPFC_ADD) {
1657 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1660 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1664 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1665 enum ofp_version version)
1667 const struct ofputil_flow_mod_flag *f;
1671 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1673 && version >= f->min_version
1674 && (!f->max_version || version <= f->max_version)) {
1675 raw_flags |= f->raw_flag;
1679 return htons(raw_flags);
1682 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1683 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1686 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1687 * The caller must initialize 'ofpacts' and retains ownership of it.
1688 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1690 * Does not validate the flow_mod actions. The caller should do that, with
1691 * ofpacts_check(). */
1693 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1694 const struct ofp_header *oh,
1695 enum ofputil_protocol protocol,
1696 struct ofpbuf *ofpacts,
1697 ofp_port_t max_port, uint8_t max_table)
1704 /* Ignored for non-delete actions */
1705 fm->delete_reason = OFPRR_DELETE;
1707 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1708 raw = ofpraw_pull_assert(&b);
1709 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1710 /* Standard OpenFlow 1.1+ flow_mod. */
1711 const struct ofp11_flow_mod *ofm;
1713 ofm = ofpbuf_pull(&b, sizeof *ofm);
1715 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1720 /* Translate the message. */
1721 fm->priority = ntohs(ofm->priority);
1722 if (ofm->command == OFPFC_ADD
1723 || (oh->version == OFP11_VERSION
1724 && (ofm->command == OFPFC_MODIFY ||
1725 ofm->command == OFPFC_MODIFY_STRICT)
1726 && ofm->cookie_mask == htonll(0))) {
1727 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1728 * not match on the cookie is treated as an "add" if there is no
1730 fm->cookie = htonll(0);
1731 fm->cookie_mask = htonll(0);
1732 fm->new_cookie = ofm->cookie;
1734 fm->cookie = ofm->cookie;
1735 fm->cookie_mask = ofm->cookie_mask;
1736 fm->new_cookie = OVS_BE64_MAX;
1738 fm->modify_cookie = false;
1739 fm->command = ofm->command;
1743 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1744 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1745 fm->table_id = ofm->table_id;
1746 if (fm->table_id == OFPTT_ALL
1747 && (oh->version == OFP11_VERSION
1748 || (ofm->command != OFPFC_DELETE &&
1749 ofm->command != OFPFC_DELETE_STRICT))) {
1750 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1753 fm->idle_timeout = ntohs(ofm->idle_timeout);
1754 fm->hard_timeout = ntohs(ofm->hard_timeout);
1755 if (oh->version >= OFP14_VERSION && ofm->command == OFPFC_ADD) {
1756 fm->importance = ntohs(ofm->importance);
1760 fm->buffer_id = ntohl(ofm->buffer_id);
1761 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1766 fm->out_group = (ofm->command == OFPFC_DELETE ||
1767 ofm->command == OFPFC_DELETE_STRICT
1768 ? ntohl(ofm->out_group)
1770 raw_flags = ofm->flags;
1774 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1775 /* Standard OpenFlow 1.0 flow_mod. */
1776 const struct ofp10_flow_mod *ofm;
1778 /* Get the ofp10_flow_mod. */
1779 ofm = ofpbuf_pull(&b, sizeof *ofm);
1781 /* Translate the rule. */
1782 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1783 ofputil_normalize_match(&fm->match);
1785 /* OpenFlow 1.0 says that exact-match rules have to have the
1786 * highest possible priority. */
1787 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1788 ? ntohs(ofm->priority)
1791 /* Translate the message. */
1792 command = ntohs(ofm->command);
1793 fm->cookie = htonll(0);
1794 fm->cookie_mask = htonll(0);
1795 fm->new_cookie = ofm->cookie;
1796 fm->idle_timeout = ntohs(ofm->idle_timeout);
1797 fm->hard_timeout = ntohs(ofm->hard_timeout);
1799 fm->buffer_id = ntohl(ofm->buffer_id);
1800 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1801 fm->out_group = OFPG_ANY;
1802 raw_flags = ofm->flags;
1803 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1804 /* Nicira extended flow_mod. */
1805 const struct nx_flow_mod *nfm;
1807 /* Dissect the message. */
1808 nfm = ofpbuf_pull(&b, sizeof *nfm);
1809 error = nx_pull_match(&b, ntohs(nfm->match_len),
1810 &fm->match, &fm->cookie, &fm->cookie_mask);
1815 /* Translate the message. */
1816 command = ntohs(nfm->command);
1817 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1818 /* Flow additions may only set a new cookie, not match an
1819 * existing cookie. */
1820 return OFPERR_NXBRC_NXM_INVALID;
1822 fm->priority = ntohs(nfm->priority);
1823 fm->new_cookie = nfm->cookie;
1824 fm->idle_timeout = ntohs(nfm->idle_timeout);
1825 fm->hard_timeout = ntohs(nfm->hard_timeout);
1827 fm->buffer_id = ntohl(nfm->buffer_id);
1828 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1829 fm->out_group = OFPG_ANY;
1830 raw_flags = nfm->flags;
1835 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1836 if (protocol & OFPUTIL_P_TID) {
1837 fm->command = command & 0xff;
1838 fm->table_id = command >> 8;
1840 if (command > 0xff) {
1841 VLOG_WARN_RL(&bad_ofmsg_rl, "flow_mod has explicit table_id "
1842 "but flow_mod_table_id extension is not enabled");
1844 fm->command = command;
1845 fm->table_id = 0xff;
1849 if (fm->command > OFPFC_DELETE_STRICT) {
1850 return OFPERR_OFPFMFC_BAD_COMMAND;
1853 error = ofpacts_pull_openflow_instructions(&b, b.size,
1854 oh->version, ofpacts);
1858 fm->ofpacts = ofpacts->data;
1859 fm->ofpacts_len = ofpacts->size;
1861 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1862 oh->version, &fm->flags);
1867 if (fm->flags & OFPUTIL_FF_EMERG) {
1868 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1869 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1871 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1872 * or hard_timeout is nonzero. Otherwise, there is no good error
1873 * code, so just state that the flow table is full. */
1874 return (fm->hard_timeout || fm->idle_timeout
1875 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1876 : OFPERR_OFPFMFC_TABLE_FULL);
1879 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1880 &fm->match.flow, max_port,
1881 fm->table_id, max_table, protocol);
1885 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1886 struct ofpbuf *bands)
1888 const struct ofp13_meter_band_header *ombh;
1889 struct ofputil_meter_band *mb;
1892 ombh = ofpbuf_try_pull(msg, len);
1894 return OFPERR_OFPBRC_BAD_LEN;
1897 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1898 size_t ombh_len = ntohs(ombh->len);
1899 /* All supported band types have the same length. */
1900 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1901 return OFPERR_OFPBRC_BAD_LEN;
1903 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1904 mb->type = ntohs(ombh->type);
1905 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1906 return OFPERR_OFPMMFC_BAD_BAND;
1908 mb->rate = ntohl(ombh->rate);
1909 mb->burst_size = ntohl(ombh->burst_size);
1910 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1911 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1914 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1915 (char *) ombh + ombh_len);
1918 return OFPERR_OFPBRC_BAD_LEN;
1925 ofputil_decode_meter_mod(const struct ofp_header *oh,
1926 struct ofputil_meter_mod *mm,
1927 struct ofpbuf *bands)
1929 const struct ofp13_meter_mod *omm;
1932 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1933 ofpraw_pull_assert(&b);
1934 omm = ofpbuf_pull(&b, sizeof *omm);
1936 /* Translate the message. */
1937 mm->command = ntohs(omm->command);
1938 if (mm->command != OFPMC13_ADD &&
1939 mm->command != OFPMC13_MODIFY &&
1940 mm->command != OFPMC13_DELETE) {
1941 return OFPERR_OFPMMFC_BAD_COMMAND;
1943 mm->meter.meter_id = ntohl(omm->meter_id);
1945 if (mm->command == OFPMC13_DELETE) {
1946 mm->meter.flags = 0;
1947 mm->meter.n_bands = 0;
1948 mm->meter.bands = NULL;
1952 mm->meter.flags = ntohs(omm->flags);
1953 if (mm->meter.flags & OFPMF13_KBPS &&
1954 mm->meter.flags & OFPMF13_PKTPS) {
1955 return OFPERR_OFPMMFC_BAD_FLAGS;
1957 mm->meter.bands = bands->data;
1959 error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
1968 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1970 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1971 *meter_id = ntohl(omr->meter_id);
1975 ofputil_encode_meter_request(enum ofp_version ofp_version,
1976 enum ofputil_meter_request_type type,
1984 case OFPUTIL_METER_CONFIG:
1985 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1987 case OFPUTIL_METER_STATS:
1988 raw = OFPRAW_OFPST13_METER_REQUEST;
1991 case OFPUTIL_METER_FEATURES:
1992 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1996 msg = ofpraw_alloc(raw, ofp_version, 0);
1998 if (type != OFPUTIL_METER_FEATURES) {
1999 struct ofp13_meter_multipart_request *omr;
2000 omr = ofpbuf_put_zeros(msg, sizeof *omr);
2001 omr->meter_id = htonl(meter_id);
2007 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
2012 for (n = 0; n < n_bands; ++n) {
2013 /* Currently all band types have same size. */
2014 struct ofp13_meter_band_dscp_remark *ombh;
2015 size_t ombh_len = sizeof *ombh;
2017 ombh = ofpbuf_put_zeros(msg, ombh_len);
2019 ombh->type = htons(mb->type);
2020 ombh->len = htons(ombh_len);
2021 ombh->rate = htonl(mb->rate);
2022 ombh->burst_size = htonl(mb->burst_size);
2023 ombh->prec_level = mb->prec_level;
2029 /* Encode a meter stat for 'mc' and append it to 'replies'. */
2031 ofputil_append_meter_config(struct ovs_list *replies,
2032 const struct ofputil_meter_config *mc)
2034 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
2035 size_t start_ofs = msg->size;
2036 struct ofp13_meter_config *reply = ofpbuf_put_uninit(msg, sizeof *reply);
2037 reply->flags = htons(mc->flags);
2038 reply->meter_id = htonl(mc->meter_id);
2040 ofputil_put_bands(mc->n_bands, mc->bands, msg);
2042 reply->length = htons(msg->size - start_ofs);
2044 ofpmp_postappend(replies, start_ofs);
2047 /* Encode a meter stat for 'ms' and append it to 'replies'. */
2049 ofputil_append_meter_stats(struct ovs_list *replies,
2050 const struct ofputil_meter_stats *ms)
2052 struct ofp13_meter_stats *reply;
2056 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
2057 reply = ofpmp_append(replies, len);
2059 reply->meter_id = htonl(ms->meter_id);
2060 reply->len = htons(len);
2061 memset(reply->pad, 0, sizeof reply->pad);
2062 reply->flow_count = htonl(ms->flow_count);
2063 reply->packet_in_count = htonll(ms->packet_in_count);
2064 reply->byte_in_count = htonll(ms->byte_in_count);
2065 reply->duration_sec = htonl(ms->duration_sec);
2066 reply->duration_nsec = htonl(ms->duration_nsec);
2068 for (n = 0; n < ms->n_bands; ++n) {
2069 const struct ofputil_meter_band_stats *src = &ms->bands[n];
2070 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
2072 dst->packet_band_count = htonll(src->packet_count);
2073 dst->byte_band_count = htonll(src->byte_count);
2077 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
2078 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
2079 * 'bands'. The caller must have initialized 'bands' and retains ownership of
2080 * it across the call.
2082 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
2083 * message. Calling this function multiple times for a single 'msg' iterates
2084 * through the replies. 'bands' is cleared for each reply.
2086 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2087 * otherwise a positive errno value. */
2089 ofputil_decode_meter_config(struct ofpbuf *msg,
2090 struct ofputil_meter_config *mc,
2091 struct ofpbuf *bands)
2093 const struct ofp13_meter_config *omc;
2096 /* Pull OpenFlow headers for the first call. */
2098 ofpraw_pull_assert(msg);
2105 omc = ofpbuf_try_pull(msg, sizeof *omc);
2107 VLOG_WARN_RL(&bad_ofmsg_rl,
2108 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2110 return OFPERR_OFPBRC_BAD_LEN;
2113 ofpbuf_clear(bands);
2114 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2115 &mc->n_bands, bands);
2119 mc->meter_id = ntohl(omc->meter_id);
2120 mc->flags = ntohs(omc->flags);
2121 mc->bands = bands->data;
2127 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2128 struct ofpbuf *bands)
2130 const struct ofp13_meter_band_stats *ombs;
2131 struct ofputil_meter_band_stats *mbs;
2134 ombs = ofpbuf_try_pull(msg, len);
2136 return OFPERR_OFPBRC_BAD_LEN;
2139 n = len / sizeof *ombs;
2140 if (len != n * sizeof *ombs) {
2141 return OFPERR_OFPBRC_BAD_LEN;
2144 mbs = ofpbuf_put_uninit(bands, len);
2146 for (i = 0; i < n; ++i) {
2147 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2148 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2154 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2155 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2156 * decoded into 'bands'.
2158 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2159 * message. Calling this function multiple times for a single 'msg' iterates
2160 * through the replies. 'bands' is cleared for each reply.
2162 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2163 * otherwise a positive errno value. */
2165 ofputil_decode_meter_stats(struct ofpbuf *msg,
2166 struct ofputil_meter_stats *ms,
2167 struct ofpbuf *bands)
2169 const struct ofp13_meter_stats *oms;
2172 /* Pull OpenFlow headers for the first call. */
2174 ofpraw_pull_assert(msg);
2181 oms = ofpbuf_try_pull(msg, sizeof *oms);
2183 VLOG_WARN_RL(&bad_ofmsg_rl,
2184 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2186 return OFPERR_OFPBRC_BAD_LEN;
2189 ofpbuf_clear(bands);
2190 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2191 &ms->n_bands, bands);
2195 ms->meter_id = ntohl(oms->meter_id);
2196 ms->flow_count = ntohl(oms->flow_count);
2197 ms->packet_in_count = ntohll(oms->packet_in_count);
2198 ms->byte_in_count = ntohll(oms->byte_in_count);
2199 ms->duration_sec = ntohl(oms->duration_sec);
2200 ms->duration_nsec = ntohl(oms->duration_nsec);
2201 ms->bands = bands->data;
2207 ofputil_decode_meter_features(const struct ofp_header *oh,
2208 struct ofputil_meter_features *mf)
2210 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2212 mf->max_meters = ntohl(omf->max_meter);
2213 mf->band_types = ntohl(omf->band_types);
2214 mf->capabilities = ntohl(omf->capabilities);
2215 mf->max_bands = omf->max_bands;
2216 mf->max_color = omf->max_color;
2220 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2221 const struct ofp_header *request)
2223 struct ofpbuf *reply;
2224 struct ofp13_meter_features *omf;
2226 reply = ofpraw_alloc_stats_reply(request, 0);
2227 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2229 omf->max_meter = htonl(mf->max_meters);
2230 omf->band_types = htonl(mf->band_types);
2231 omf->capabilities = htonl(mf->capabilities);
2232 omf->max_bands = mf->max_bands;
2233 omf->max_color = mf->max_color;
2239 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2240 const struct ofputil_meter_mod *mm)
2244 struct ofp13_meter_mod *omm;
2246 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2247 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2248 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2249 omm->command = htons(mm->command);
2250 if (mm->command != OFPMC13_DELETE) {
2251 omm->flags = htons(mm->meter.flags);
2253 omm->meter_id = htonl(mm->meter.meter_id);
2255 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2257 ofpmsg_update_length(msg);
2262 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2263 enum ofputil_protocol protocol)
2265 return htons(protocol & OFPUTIL_P_TID
2266 ? (fm->command & 0xff) | (fm->table_id << 8)
2270 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2271 * 'protocol' and returns the message. */
2273 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2274 enum ofputil_protocol protocol)
2276 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2277 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2281 case OFPUTIL_P_OF11_STD:
2282 case OFPUTIL_P_OF12_OXM:
2283 case OFPUTIL_P_OF13_OXM:
2284 case OFPUTIL_P_OF14_OXM:
2285 case OFPUTIL_P_OF15_OXM: {
2286 struct ofp11_flow_mod *ofm;
2289 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2290 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2291 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2292 if ((protocol == OFPUTIL_P_OF11_STD
2293 && (fm->command == OFPFC_MODIFY ||
2294 fm->command == OFPFC_MODIFY_STRICT)
2295 && fm->cookie_mask == htonll(0))
2296 || fm->command == OFPFC_ADD) {
2297 ofm->cookie = fm->new_cookie;
2299 ofm->cookie = fm->cookie & fm->cookie_mask;
2301 ofm->cookie_mask = fm->cookie_mask;
2302 if (fm->table_id != OFPTT_ALL
2303 || (protocol != OFPUTIL_P_OF11_STD
2304 && (fm->command == OFPFC_DELETE ||
2305 fm->command == OFPFC_DELETE_STRICT))) {
2306 ofm->table_id = fm->table_id;
2310 ofm->command = fm->command;
2311 ofm->idle_timeout = htons(fm->idle_timeout);
2312 ofm->hard_timeout = htons(fm->hard_timeout);
2313 ofm->priority = htons(fm->priority);
2314 ofm->buffer_id = htonl(fm->buffer_id);
2315 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2316 ofm->out_group = htonl(fm->out_group);
2317 ofm->flags = raw_flags;
2318 if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
2319 ofm->importance = htons(fm->importance);
2321 ofm->importance = 0;
2323 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2324 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2329 case OFPUTIL_P_OF10_STD:
2330 case OFPUTIL_P_OF10_STD_TID: {
2331 struct ofp10_flow_mod *ofm;
2333 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2335 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2336 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2337 ofm->cookie = fm->new_cookie;
2338 ofm->command = ofputil_tid_command(fm, protocol);
2339 ofm->idle_timeout = htons(fm->idle_timeout);
2340 ofm->hard_timeout = htons(fm->hard_timeout);
2341 ofm->priority = htons(fm->priority);
2342 ofm->buffer_id = htonl(fm->buffer_id);
2343 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2344 ofm->flags = raw_flags;
2345 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2350 case OFPUTIL_P_OF10_NXM:
2351 case OFPUTIL_P_OF10_NXM_TID: {
2352 struct nx_flow_mod *nfm;
2355 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2356 NXM_TYPICAL_LEN + fm->ofpacts_len);
2357 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2358 nfm->command = ofputil_tid_command(fm, protocol);
2359 nfm->cookie = fm->new_cookie;
2360 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2362 nfm->idle_timeout = htons(fm->idle_timeout);
2363 nfm->hard_timeout = htons(fm->hard_timeout);
2364 nfm->priority = htons(fm->priority);
2365 nfm->buffer_id = htonl(fm->buffer_id);
2366 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2367 nfm->flags = raw_flags;
2368 nfm->match_len = htons(match_len);
2369 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2378 ofpmsg_update_length(msg);
2383 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2384 const struct ofp10_flow_stats_request *ofsr,
2387 fsr->aggregate = aggregate;
2388 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2389 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2390 fsr->out_group = OFPG_ANY;
2391 fsr->table_id = ofsr->table_id;
2392 fsr->cookie = fsr->cookie_mask = htonll(0);
2398 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2399 struct ofpbuf *b, bool aggregate)
2401 const struct ofp11_flow_stats_request *ofsr;
2404 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2405 fsr->aggregate = aggregate;
2406 fsr->table_id = ofsr->table_id;
2407 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2411 fsr->out_group = ntohl(ofsr->out_group);
2412 fsr->cookie = ofsr->cookie;
2413 fsr->cookie_mask = ofsr->cookie_mask;
2414 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2423 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2424 struct ofpbuf *b, bool aggregate)
2426 const struct nx_flow_stats_request *nfsr;
2429 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2430 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2431 &fsr->cookie, &fsr->cookie_mask);
2436 return OFPERR_OFPBRC_BAD_LEN;
2439 fsr->aggregate = aggregate;
2440 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2441 fsr->out_group = OFPG_ANY;
2442 fsr->table_id = nfsr->table_id;
2447 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2448 * 'port', suitable for OpenFlow version 'version'. */
2450 ofputil_encode_queue_get_config_request(enum ofp_version version,
2453 struct ofpbuf *request;
2455 if (version == OFP10_VERSION) {
2456 struct ofp10_queue_get_config_request *qgcr10;
2458 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2460 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2461 qgcr10->port = htons(ofp_to_u16(port));
2463 struct ofp11_queue_get_config_request *qgcr11;
2465 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2467 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2468 qgcr11->port = ofputil_port_to_ofp11(port);
2474 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2475 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2478 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2481 const struct ofp10_queue_get_config_request *qgcr10;
2482 const struct ofp11_queue_get_config_request *qgcr11;
2486 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2487 raw = ofpraw_pull_assert(&b);
2489 switch ((int) raw) {
2490 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2492 *port = u16_to_ofp(ntohs(qgcr10->port));
2495 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2497 return ofputil_port_from_ofp11(qgcr11->port, port);
2503 /* Constructs and returns the beginning of a reply to
2504 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2505 * individual queues with ofputil_append_queue_get_config_reply(). */
2507 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2509 struct ofp10_queue_get_config_reply *qgcr10;
2510 struct ofp11_queue_get_config_reply *qgcr11;
2511 struct ofpbuf *reply;
2517 error = ofputil_decode_queue_get_config_request(oh, &port);
2520 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2521 raw = ofpraw_pull_assert(&b);
2523 switch ((int) raw) {
2524 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2525 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2527 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2528 qgcr10->port = htons(ofp_to_u16(port));
2531 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2532 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2534 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2535 qgcr11->port = ofputil_port_to_ofp11(port);
2546 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2549 if (rate != UINT16_MAX) {
2550 struct ofp_queue_prop_rate *oqpr;
2552 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2553 oqpr->prop_header.property = htons(property);
2554 oqpr->prop_header.len = htons(sizeof *oqpr);
2555 oqpr->rate = htons(rate);
2559 /* Appends a queue description for 'queue_id' to the
2560 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2562 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2563 const struct ofputil_queue_config *oqc)
2565 const struct ofp_header *oh = reply->data;
2566 size_t start_ofs, len_ofs;
2569 start_ofs = reply->size;
2570 if (oh->version < OFP12_VERSION) {
2571 struct ofp10_packet_queue *opq10;
2573 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2574 opq10->queue_id = htonl(oqc->queue_id);
2575 len_ofs = (char *) &opq10->len - (char *) reply->data;
2577 struct ofp11_queue_get_config_reply *qgcr11;
2578 struct ofp12_packet_queue *opq12;
2581 qgcr11 = reply->msg;
2582 port = qgcr11->port;
2584 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2586 opq12->queue_id = htonl(oqc->queue_id);
2587 len_ofs = (char *) &opq12->len - (char *) reply->data;
2590 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2591 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2593 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2594 *len = htons(reply->size - start_ofs);
2597 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2598 * stores in '*port' the port that the reply is about. The caller may call
2599 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2600 * queues included in the reply. Returns 0 if successful, otherwise an
2603 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2605 const struct ofp10_queue_get_config_reply *qgcr10;
2606 const struct ofp11_queue_get_config_reply *qgcr11;
2609 raw = ofpraw_pull_assert(reply);
2610 switch ((int) raw) {
2611 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2612 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2613 *port = u16_to_ofp(ntohs(qgcr10->port));
2616 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2617 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2618 return ofputil_port_from_ofp11(qgcr11->port, port);
2625 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2627 const struct ofp_queue_prop_rate *oqpr;
2629 if (hdr->len == htons(sizeof *oqpr)) {
2630 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2631 *rate = ntohs(oqpr->rate);
2634 return OFPERR_OFPBRC_BAD_LEN;
2638 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2639 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2640 * must already have pulled off the main header.
2642 * This function returns EOF if the last queue has already been decoded, 0 if a
2643 * queue was successfully decoded into '*queue', or an ofperr if there was a
2644 * problem decoding 'reply'. */
2646 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2647 struct ofputil_queue_config *queue)
2649 const struct ofp_header *oh;
2650 unsigned int opq_len;
2657 queue->min_rate = UINT16_MAX;
2658 queue->max_rate = UINT16_MAX;
2661 if (oh->version < OFP12_VERSION) {
2662 const struct ofp10_packet_queue *opq10;
2664 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2666 return OFPERR_OFPBRC_BAD_LEN;
2668 queue->queue_id = ntohl(opq10->queue_id);
2669 len = ntohs(opq10->len);
2670 opq_len = sizeof *opq10;
2672 const struct ofp12_packet_queue *opq12;
2674 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2676 return OFPERR_OFPBRC_BAD_LEN;
2678 queue->queue_id = ntohl(opq12->queue_id);
2679 len = ntohs(opq12->len);
2680 opq_len = sizeof *opq12;
2683 if (len < opq_len || len > reply->size + opq_len || len % 8) {
2684 return OFPERR_OFPBRC_BAD_LEN;
2689 const struct ofp_queue_prop_header *hdr;
2690 unsigned int property;
2691 unsigned int prop_len;
2692 enum ofperr error = 0;
2694 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2695 prop_len = ntohs(hdr->len);
2696 if (prop_len < sizeof *hdr || prop_len > reply->size || prop_len % 8) {
2697 return OFPERR_OFPBRC_BAD_LEN;
2700 property = ntohs(hdr->property);
2702 case OFPQT_MIN_RATE:
2703 error = parse_queue_rate(hdr, &queue->min_rate);
2706 case OFPQT_MAX_RATE:
2707 error = parse_queue_rate(hdr, &queue->max_rate);
2711 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2718 ofpbuf_pull(reply, prop_len);
2724 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2725 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2726 * successful, otherwise an OpenFlow error code. */
2728 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2729 const struct ofp_header *oh)
2734 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2735 raw = ofpraw_pull_assert(&b);
2736 switch ((int) raw) {
2737 case OFPRAW_OFPST10_FLOW_REQUEST:
2738 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2740 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2741 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2743 case OFPRAW_OFPST11_FLOW_REQUEST:
2744 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2746 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2747 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2749 case OFPRAW_NXST_FLOW_REQUEST:
2750 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2752 case OFPRAW_NXST_AGGREGATE_REQUEST:
2753 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2756 /* Hey, the caller lied. */
2761 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2762 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2763 * 'protocol', and returns the message. */
2765 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2766 enum ofputil_protocol protocol)
2772 case OFPUTIL_P_OF11_STD:
2773 case OFPUTIL_P_OF12_OXM:
2774 case OFPUTIL_P_OF13_OXM:
2775 case OFPUTIL_P_OF14_OXM:
2776 case OFPUTIL_P_OF15_OXM: {
2777 struct ofp11_flow_stats_request *ofsr;
2779 raw = (fsr->aggregate
2780 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2781 : OFPRAW_OFPST11_FLOW_REQUEST);
2782 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2783 ofputil_match_typical_len(protocol));
2784 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2785 ofsr->table_id = fsr->table_id;
2786 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2787 ofsr->out_group = htonl(fsr->out_group);
2788 ofsr->cookie = fsr->cookie;
2789 ofsr->cookie_mask = fsr->cookie_mask;
2790 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2794 case OFPUTIL_P_OF10_STD:
2795 case OFPUTIL_P_OF10_STD_TID: {
2796 struct ofp10_flow_stats_request *ofsr;
2798 raw = (fsr->aggregate
2799 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2800 : OFPRAW_OFPST10_FLOW_REQUEST);
2801 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2802 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2803 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2804 ofsr->table_id = fsr->table_id;
2805 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2809 case OFPUTIL_P_OF10_NXM:
2810 case OFPUTIL_P_OF10_NXM_TID: {
2811 struct nx_flow_stats_request *nfsr;
2814 raw = (fsr->aggregate
2815 ? OFPRAW_NXST_AGGREGATE_REQUEST
2816 : OFPRAW_NXST_FLOW_REQUEST);
2817 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2818 ofpbuf_put_zeros(msg, sizeof *nfsr);
2819 match_len = nx_put_match(msg, &fsr->match,
2820 fsr->cookie, fsr->cookie_mask);
2823 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2824 nfsr->match_len = htons(match_len);
2825 nfsr->table_id = fsr->table_id;
2836 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2837 * ofputil_flow_stats in 'fs'.
2839 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2840 * OpenFlow message. Calling this function multiple times for a single 'msg'
2841 * iterates through the replies. The caller must initially leave 'msg''s layer
2842 * pointers null and not modify them between calls.
2844 * Most switches don't send the values needed to populate fs->idle_age and
2845 * fs->hard_age, so those members will usually be set to 0. If the switch from
2846 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2847 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2848 * 'idle_age' and 'hard_age' members in 'fs'.
2850 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2851 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2852 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2854 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2855 * otherwise a positive errno value. */
2857 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2859 bool flow_age_extension,
2860 struct ofpbuf *ofpacts)
2862 const struct ofp_header *oh;
2863 size_t instructions_len;
2867 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2868 : ofpraw_pull(&raw, msg));
2876 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2877 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2878 const struct ofp11_flow_stats *ofs;
2880 uint16_t padded_match_len;
2882 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2884 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2885 "bytes at end", msg->size);
2889 length = ntohs(ofs->length);
2890 if (length < sizeof *ofs) {
2891 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2892 "length %"PRIuSIZE, length);
2896 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2897 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2900 instructions_len = length - sizeof *ofs - padded_match_len;
2902 fs->priority = ntohs(ofs->priority);
2903 fs->table_id = ofs->table_id;
2904 fs->duration_sec = ntohl(ofs->duration_sec);
2905 fs->duration_nsec = ntohl(ofs->duration_nsec);
2906 fs->idle_timeout = ntohs(ofs->idle_timeout);
2907 fs->hard_timeout = ntohs(ofs->hard_timeout);
2908 if (oh->version >= OFP14_VERSION) {
2909 fs->importance = ntohs(ofs->importance);
2913 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2914 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2924 fs->cookie = ofs->cookie;
2925 fs->packet_count = ntohll(ofs->packet_count);
2926 fs->byte_count = ntohll(ofs->byte_count);
2927 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2928 const struct ofp10_flow_stats *ofs;
2931 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2933 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2934 "bytes at end", msg->size);
2938 length = ntohs(ofs->length);
2939 if (length < sizeof *ofs) {
2940 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2941 "length %"PRIuSIZE, length);
2944 instructions_len = length - sizeof *ofs;
2946 fs->cookie = get_32aligned_be64(&ofs->cookie);
2947 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2948 fs->priority = ntohs(ofs->priority);
2949 fs->table_id = ofs->table_id;
2950 fs->duration_sec = ntohl(ofs->duration_sec);
2951 fs->duration_nsec = ntohl(ofs->duration_nsec);
2952 fs->idle_timeout = ntohs(ofs->idle_timeout);
2953 fs->hard_timeout = ntohs(ofs->hard_timeout);
2957 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2958 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2960 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2961 const struct nx_flow_stats *nfs;
2962 size_t match_len, length;
2964 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2966 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2967 "bytes at end", msg->size);
2971 length = ntohs(nfs->length);
2972 match_len = ntohs(nfs->match_len);
2973 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2974 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2975 "claims invalid length %"PRIuSIZE, match_len, length);
2978 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2981 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2983 fs->cookie = nfs->cookie;
2984 fs->table_id = nfs->table_id;
2985 fs->duration_sec = ntohl(nfs->duration_sec);
2986 fs->duration_nsec = ntohl(nfs->duration_nsec);
2987 fs->priority = ntohs(nfs->priority);
2988 fs->idle_timeout = ntohs(nfs->idle_timeout);
2989 fs->hard_timeout = ntohs(nfs->hard_timeout);
2993 if (flow_age_extension) {
2994 if (nfs->idle_age) {
2995 fs->idle_age = ntohs(nfs->idle_age) - 1;
2997 if (nfs->hard_age) {
2998 fs->hard_age = ntohs(nfs->hard_age) - 1;
3001 fs->packet_count = ntohll(nfs->packet_count);
3002 fs->byte_count = ntohll(nfs->byte_count);
3008 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
3010 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
3013 fs->ofpacts = ofpacts->data;
3014 fs->ofpacts_len = ofpacts->size;
3019 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
3021 * We use this in situations where OVS internally uses UINT64_MAX to mean
3022 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
3024 unknown_to_zero(uint64_t count)
3026 return count != UINT64_MAX ? count : 0;
3029 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
3030 * those already present in the list of ofpbufs in 'replies'. 'replies' should
3031 * have been initialized with ofpmp_init(). */
3033 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
3034 struct ovs_list *replies)
3036 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
3037 size_t start_ofs = reply->size;
3038 enum ofp_version version = ofpmp_version(replies);
3039 enum ofpraw raw = ofpmp_decode_raw(replies);
3041 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
3042 struct ofp11_flow_stats *ofs;
3044 ofpbuf_put_uninit(reply, sizeof *ofs);
3045 oxm_put_match(reply, &fs->match, version);
3046 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
3049 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3050 ofs->length = htons(reply->size - start_ofs);
3051 ofs->table_id = fs->table_id;
3053 ofs->duration_sec = htonl(fs->duration_sec);
3054 ofs->duration_nsec = htonl(fs->duration_nsec);
3055 ofs->priority = htons(fs->priority);
3056 ofs->idle_timeout = htons(fs->idle_timeout);
3057 ofs->hard_timeout = htons(fs->hard_timeout);
3058 if (version >= OFP14_VERSION) {
3059 ofs->importance = htons(fs->importance);
3061 ofs->importance = 0;
3063 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3064 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3068 memset(ofs->pad2, 0, sizeof ofs->pad2);
3069 ofs->cookie = fs->cookie;
3070 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3071 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3072 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3073 struct ofp10_flow_stats *ofs;
3075 ofpbuf_put_uninit(reply, sizeof *ofs);
3076 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3078 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3079 ofs->length = htons(reply->size - start_ofs);
3080 ofs->table_id = fs->table_id;
3082 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3083 ofs->duration_sec = htonl(fs->duration_sec);
3084 ofs->duration_nsec = htonl(fs->duration_nsec);
3085 ofs->priority = htons(fs->priority);
3086 ofs->idle_timeout = htons(fs->idle_timeout);
3087 ofs->hard_timeout = htons(fs->hard_timeout);
3088 memset(ofs->pad2, 0, sizeof ofs->pad2);
3089 put_32aligned_be64(&ofs->cookie, fs->cookie);
3090 put_32aligned_be64(&ofs->packet_count,
3091 htonll(unknown_to_zero(fs->packet_count)));
3092 put_32aligned_be64(&ofs->byte_count,
3093 htonll(unknown_to_zero(fs->byte_count)));
3094 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3095 struct nx_flow_stats *nfs;
3098 ofpbuf_put_uninit(reply, sizeof *nfs);
3099 match_len = nx_put_match(reply, &fs->match, 0, 0);
3100 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3102 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3103 nfs->length = htons(reply->size - start_ofs);
3104 nfs->table_id = fs->table_id;
3106 nfs->duration_sec = htonl(fs->duration_sec);
3107 nfs->duration_nsec = htonl(fs->duration_nsec);
3108 nfs->priority = htons(fs->priority);
3109 nfs->idle_timeout = htons(fs->idle_timeout);
3110 nfs->hard_timeout = htons(fs->hard_timeout);
3111 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3112 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3114 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3115 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3117 nfs->match_len = htons(match_len);
3118 nfs->cookie = fs->cookie;
3119 nfs->packet_count = htonll(fs->packet_count);
3120 nfs->byte_count = htonll(fs->byte_count);
3125 ofpmp_postappend(replies, start_ofs);
3128 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3129 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3131 ofputil_encode_aggregate_stats_reply(
3132 const struct ofputil_aggregate_stats *stats,
3133 const struct ofp_header *request)
3135 struct ofp_aggregate_stats_reply *asr;
3136 uint64_t packet_count;
3137 uint64_t byte_count;
3141 ofpraw_decode(&raw, request);
3142 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3143 packet_count = unknown_to_zero(stats->packet_count);
3144 byte_count = unknown_to_zero(stats->byte_count);
3146 packet_count = stats->packet_count;
3147 byte_count = stats->byte_count;
3150 msg = ofpraw_alloc_stats_reply(request, 0);
3151 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3152 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3153 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3154 asr->flow_count = htonl(stats->flow_count);
3160 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3161 const struct ofp_header *reply)
3163 struct ofp_aggregate_stats_reply *asr;
3166 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3167 ofpraw_pull_assert(&msg);
3170 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3171 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3172 stats->flow_count = ntohl(asr->flow_count);
3177 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3178 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3179 * an OpenFlow error code. */
3181 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3182 const struct ofp_header *oh)
3187 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3188 raw = ofpraw_pull_assert(&b);
3189 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3190 const struct ofp12_flow_removed *ofr;
3193 ofr = ofpbuf_pull(&b, sizeof *ofr);
3195 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3200 fr->priority = ntohs(ofr->priority);
3201 fr->cookie = ofr->cookie;
3202 fr->reason = ofr->reason;
3203 fr->table_id = ofr->table_id;
3204 fr->duration_sec = ntohl(ofr->duration_sec);
3205 fr->duration_nsec = ntohl(ofr->duration_nsec);
3206 fr->idle_timeout = ntohs(ofr->idle_timeout);
3207 fr->hard_timeout = ntohs(ofr->hard_timeout);
3208 fr->packet_count = ntohll(ofr->packet_count);
3209 fr->byte_count = ntohll(ofr->byte_count);
3210 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3211 const struct ofp10_flow_removed *ofr;
3213 ofr = ofpbuf_pull(&b, sizeof *ofr);
3215 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3216 fr->priority = ntohs(ofr->priority);
3217 fr->cookie = ofr->cookie;
3218 fr->reason = ofr->reason;
3220 fr->duration_sec = ntohl(ofr->duration_sec);
3221 fr->duration_nsec = ntohl(ofr->duration_nsec);
3222 fr->idle_timeout = ntohs(ofr->idle_timeout);
3223 fr->hard_timeout = 0;
3224 fr->packet_count = ntohll(ofr->packet_count);
3225 fr->byte_count = ntohll(ofr->byte_count);
3226 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3227 struct nx_flow_removed *nfr;
3230 nfr = ofpbuf_pull(&b, sizeof *nfr);
3231 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3237 return OFPERR_OFPBRC_BAD_LEN;
3240 fr->priority = ntohs(nfr->priority);
3241 fr->cookie = nfr->cookie;
3242 fr->reason = nfr->reason;
3243 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3244 fr->duration_sec = ntohl(nfr->duration_sec);
3245 fr->duration_nsec = ntohl(nfr->duration_nsec);
3246 fr->idle_timeout = ntohs(nfr->idle_timeout);
3247 fr->hard_timeout = 0;
3248 fr->packet_count = ntohll(nfr->packet_count);
3249 fr->byte_count = ntohll(nfr->byte_count);
3257 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3258 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3261 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3262 enum ofputil_protocol protocol)
3265 enum ofp_flow_removed_reason reason = fr->reason;
3267 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3268 reason = OFPRR_DELETE;
3272 case OFPUTIL_P_OF11_STD:
3273 case OFPUTIL_P_OF12_OXM:
3274 case OFPUTIL_P_OF13_OXM:
3275 case OFPUTIL_P_OF14_OXM:
3276 case OFPUTIL_P_OF15_OXM: {
3277 struct ofp12_flow_removed *ofr;
3279 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3280 ofputil_protocol_to_ofp_version(protocol),
3282 ofputil_match_typical_len(protocol));
3283 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3284 ofr->cookie = fr->cookie;
3285 ofr->priority = htons(fr->priority);
3286 ofr->reason = reason;
3287 ofr->table_id = fr->table_id;
3288 ofr->duration_sec = htonl(fr->duration_sec);
3289 ofr->duration_nsec = htonl(fr->duration_nsec);
3290 ofr->idle_timeout = htons(fr->idle_timeout);
3291 ofr->hard_timeout = htons(fr->hard_timeout);
3292 ofr->packet_count = htonll(fr->packet_count);
3293 ofr->byte_count = htonll(fr->byte_count);
3294 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3298 case OFPUTIL_P_OF10_STD:
3299 case OFPUTIL_P_OF10_STD_TID: {
3300 struct ofp10_flow_removed *ofr;
3302 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3304 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3305 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3306 ofr->cookie = fr->cookie;
3307 ofr->priority = htons(fr->priority);
3308 ofr->reason = reason;
3309 ofr->duration_sec = htonl(fr->duration_sec);
3310 ofr->duration_nsec = htonl(fr->duration_nsec);
3311 ofr->idle_timeout = htons(fr->idle_timeout);
3312 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3313 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3317 case OFPUTIL_P_OF10_NXM:
3318 case OFPUTIL_P_OF10_NXM_TID: {
3319 struct nx_flow_removed *nfr;
3322 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3323 htonl(0), NXM_TYPICAL_LEN);
3324 ofpbuf_put_zeros(msg, sizeof *nfr);
3325 match_len = nx_put_match(msg, &fr->match, 0, 0);
3328 nfr->cookie = fr->cookie;
3329 nfr->priority = htons(fr->priority);
3330 nfr->reason = reason;
3331 nfr->table_id = fr->table_id + 1;
3332 nfr->duration_sec = htonl(fr->duration_sec);
3333 nfr->duration_nsec = htonl(fr->duration_nsec);
3334 nfr->idle_timeout = htons(fr->idle_timeout);
3335 nfr->match_len = htons(match_len);
3336 nfr->packet_count = htonll(fr->packet_count);
3337 nfr->byte_count = htonll(fr->byte_count);
3349 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3350 const struct ofp_header *oh)
3355 memset(pin, 0, sizeof *pin);
3356 pin->cookie = OVS_BE64_MAX;
3358 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3359 raw = ofpraw_pull_assert(&b);
3360 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3361 const struct ofp13_packet_in *opi;
3363 size_t packet_in_size;
3365 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3366 packet_in_size = sizeof (struct ofp12_packet_in);
3368 packet_in_size = sizeof (struct ofp13_packet_in);
3371 opi = ofpbuf_pull(&b, packet_in_size);
3372 error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3377 if (!ofpbuf_try_pull(&b, 2)) {
3378 return OFPERR_OFPBRC_BAD_LEN;
3381 pin->reason = opi->pi.reason;
3382 pin->table_id = opi->pi.table_id;
3383 pin->buffer_id = ntohl(opi->pi.buffer_id);
3384 pin->total_len = ntohs(opi->pi.total_len);
3386 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3387 pin->cookie = opi->cookie;
3390 pin->packet = b.data;
3391 pin->packet_len = b.size;
3392 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3393 const struct ofp10_packet_in *opi;
3395 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3397 pin->packet = opi->data;
3398 pin->packet_len = b.size;
3400 match_init_catchall(&pin->flow_metadata);
3401 match_set_in_port(&pin->flow_metadata, u16_to_ofp(ntohs(opi->in_port)));
3402 pin->reason = opi->reason;
3403 pin->buffer_id = ntohl(opi->buffer_id);
3404 pin->total_len = ntohs(opi->total_len);
3405 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3406 const struct ofp11_packet_in *opi;
3410 opi = ofpbuf_pull(&b, sizeof *opi);
3412 pin->packet = b.data;
3413 pin->packet_len = b.size;
3415 pin->buffer_id = ntohl(opi->buffer_id);
3416 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3420 match_init_catchall(&pin->flow_metadata);
3421 match_set_in_port(&pin->flow_metadata, in_port);
3422 pin->total_len = ntohs(opi->total_len);
3423 pin->reason = opi->reason;
3424 pin->table_id = opi->table_id;
3425 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3426 const struct nx_packet_in *npi;
3429 npi = ofpbuf_pull(&b, sizeof *npi);
3430 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3431 &pin->flow_metadata, NULL, NULL);
3436 if (!ofpbuf_try_pull(&b, 2)) {
3437 return OFPERR_OFPBRC_BAD_LEN;
3440 pin->reason = npi->reason;
3441 pin->table_id = npi->table_id;
3442 pin->cookie = npi->cookie;
3444 pin->buffer_id = ntohl(npi->buffer_id);
3445 pin->total_len = ntohs(npi->total_len);
3447 pin->packet = b.data;
3448 pin->packet_len = b.size;
3456 static struct ofpbuf *
3457 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3459 struct ofp10_packet_in *opi;
3460 struct ofpbuf *packet;
3462 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3463 htonl(0), pin->packet_len);
3464 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3465 opi->total_len = htons(pin->total_len);
3466 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3467 opi->reason = pin->reason;
3468 opi->buffer_id = htonl(pin->buffer_id);
3470 ofpbuf_put(packet, pin->packet, pin->packet_len);
3475 static struct ofpbuf *
3476 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3478 struct nx_packet_in *npi;
3479 struct ofpbuf *packet;
3482 /* The final argument is just an estimate of the space required. */
3483 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3484 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3485 ofpbuf_put_zeros(packet, sizeof *npi);
3486 match_len = nx_put_match(packet, &pin->flow_metadata, 0, 0);
3487 ofpbuf_put_zeros(packet, 2);
3488 ofpbuf_put(packet, pin->packet, pin->packet_len);
3491 npi->buffer_id = htonl(pin->buffer_id);
3492 npi->total_len = htons(pin->total_len);
3493 npi->reason = pin->reason;
3494 npi->table_id = pin->table_id;
3495 npi->cookie = pin->cookie;
3496 npi->match_len = htons(match_len);
3501 static struct ofpbuf *
3502 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3504 struct ofp11_packet_in *opi;
3505 struct ofpbuf *packet;
3507 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3508 htonl(0), pin->packet_len);
3509 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3510 opi->buffer_id = htonl(pin->buffer_id);
3511 opi->in_port = ofputil_port_to_ofp11(pin->flow_metadata.flow.in_port.ofp_port);
3512 opi->in_phy_port = opi->in_port;
3513 opi->total_len = htons(pin->total_len);
3514 opi->reason = pin->reason;
3515 opi->table_id = pin->table_id;
3517 ofpbuf_put(packet, pin->packet, pin->packet_len);
3522 static struct ofpbuf *
3523 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3524 enum ofputil_protocol protocol)
3526 struct ofp13_packet_in *opi;
3527 enum ofpraw packet_in_raw;
3528 enum ofp_version packet_in_version;
3529 size_t packet_in_size;
3530 struct ofpbuf *packet;
3532 if (protocol == OFPUTIL_P_OF12_OXM) {
3533 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3534 packet_in_version = OFP12_VERSION;
3535 packet_in_size = sizeof (struct ofp12_packet_in);
3537 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3538 packet_in_version = ofputil_protocol_to_ofp_version(protocol);
3539 packet_in_size = sizeof (struct ofp13_packet_in);
3542 /* The final argument is just an estimate of the space required. */
3543 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3544 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3545 ofpbuf_put_zeros(packet, packet_in_size);
3546 oxm_put_match(packet, &pin->flow_metadata,
3547 ofputil_protocol_to_ofp_version(protocol));
3548 ofpbuf_put_zeros(packet, 2);
3549 ofpbuf_put(packet, pin->packet, pin->packet_len);
3552 opi->pi.buffer_id = htonl(pin->buffer_id);
3553 opi->pi.total_len = htons(pin->total_len);
3554 opi->pi.reason = pin->reason;
3555 opi->pi.table_id = pin->table_id;
3556 if (protocol != OFPUTIL_P_OF12_OXM) {
3557 opi->cookie = pin->cookie;
3563 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3564 * in the format specified by 'packet_in_format'. */
3566 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3567 enum ofputil_protocol protocol,
3568 enum nx_packet_in_format packet_in_format)
3570 struct ofpbuf *packet;
3573 case OFPUTIL_P_OF10_STD:
3574 case OFPUTIL_P_OF10_STD_TID:
3575 case OFPUTIL_P_OF10_NXM:
3576 case OFPUTIL_P_OF10_NXM_TID:
3577 packet = (packet_in_format == NXPIF_NXM
3578 ? ofputil_encode_nx_packet_in(pin)
3579 : ofputil_encode_ofp10_packet_in(pin));
3582 case OFPUTIL_P_OF11_STD:
3583 packet = ofputil_encode_ofp11_packet_in(pin);
3586 case OFPUTIL_P_OF12_OXM:
3587 case OFPUTIL_P_OF13_OXM:
3588 case OFPUTIL_P_OF14_OXM:
3589 case OFPUTIL_P_OF15_OXM:
3590 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3597 ofpmsg_update_length(packet);
3601 /* Returns a string form of 'reason'. The return value is either a statically
3602 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3603 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3605 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3606 char *reasonbuf, size_t bufsize)
3613 case OFPR_INVALID_TTL:
3614 return "invalid_ttl";
3615 case OFPR_ACTION_SET:
3616 return "action_set";
3619 case OFPR_PACKET_OUT:
3620 return "packet_out";
3622 case OFPR_N_REASONS:
3624 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3630 ofputil_packet_in_reason_from_string(const char *s,
3631 enum ofp_packet_in_reason *reason)
3635 for (i = 0; i < OFPR_N_REASONS; i++) {
3636 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3637 const char *reason_s;
3639 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3641 if (!strcasecmp(s, reason_s)) {
3649 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3652 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3653 * message's actions. The caller must initialize 'ofpacts' and retains
3654 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3656 * Returns 0 if successful, otherwise an OFPERR_* value. */
3658 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3659 const struct ofp_header *oh,
3660 struct ofpbuf *ofpacts)
3665 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3666 raw = ofpraw_pull_assert(&b);
3668 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3670 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3672 po->buffer_id = ntohl(opo->buffer_id);
3673 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3678 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3679 oh->version, ofpacts);
3683 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3685 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3687 po->buffer_id = ntohl(opo->buffer_id);
3688 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3690 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3691 oh->version, ofpacts);
3699 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3700 && po->in_port != OFPP_LOCAL
3701 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3702 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3704 return OFPERR_OFPBRC_BAD_PORT;
3707 po->ofpacts = ofpacts->data;
3708 po->ofpacts_len = ofpacts->size;
3710 if (po->buffer_id == UINT32_MAX) {
3711 po->packet = b.data;
3712 po->packet_len = b.size;
3721 /* ofputil_phy_port */
3723 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3724 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3725 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3726 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3727 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3728 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3729 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3730 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3732 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3733 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3734 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3735 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3736 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3737 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3739 static enum netdev_features
3740 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3742 uint32_t ofp10 = ntohl(ofp10_);
3743 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3747 netdev_port_features_to_ofp10(enum netdev_features features)
3749 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3752 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3753 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3754 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3755 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3756 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3757 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3758 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3759 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3760 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3761 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3762 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3763 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3764 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3765 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3766 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3767 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3769 static enum netdev_features
3770 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3772 return ntohl(ofp11) & 0xffff;
3776 netdev_port_features_to_ofp11(enum netdev_features features)
3778 return htonl(features & 0xffff);
3782 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3783 const struct ofp10_phy_port *opp)
3785 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3786 pp->hw_addr = opp->hw_addr;
3787 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3789 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3790 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3792 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3793 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3794 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3795 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3797 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3798 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3804 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3805 const struct ofp11_port *op)
3809 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3813 pp->hw_addr = op->hw_addr;
3814 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3816 pp->config = ntohl(op->config) & OFPPC11_ALL;
3817 pp->state = ntohl(op->state) & OFPPS11_ALL;
3819 pp->curr = netdev_port_features_from_ofp11(op->curr);
3820 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3821 pp->supported = netdev_port_features_from_ofp11(op->supported);
3822 pp->peer = netdev_port_features_from_ofp11(op->peer);
3824 pp->curr_speed = ntohl(op->curr_speed);
3825 pp->max_speed = ntohl(op->max_speed);
3831 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3832 struct ofputil_phy_port *pp)
3834 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3836 if (payload->size != sizeof *eth) {
3837 return OFPERR_OFPBPC_BAD_LEN;
3840 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3841 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3842 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3843 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3845 pp->curr_speed = ntohl(eth->curr_speed);
3846 pp->max_speed = ntohl(eth->max_speed);
3852 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3854 struct ofpbuf properties;
3855 struct ofp14_port *op;
3859 op = ofpbuf_try_pull(msg, sizeof *op);
3861 return OFPERR_OFPBRC_BAD_LEN;
3864 len = ntohs(op->length);
3865 if (len < sizeof *op || len - sizeof *op > msg->size) {
3866 return OFPERR_OFPBRC_BAD_LEN;
3869 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3871 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3875 pp->hw_addr = op->hw_addr;
3876 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3878 pp->config = ntohl(op->config) & OFPPC11_ALL;
3879 pp->state = ntohl(op->state) & OFPPS11_ALL;
3881 while (properties.size > 0) {
3882 struct ofpbuf payload;
3886 error = ofputil_pull_property(&properties, &payload, &type);
3892 case OFPPDPT14_ETHERNET:
3893 error = parse_ofp14_port_ethernet_property(&payload, pp);
3897 log_property(true, "unknown port property %"PRIu16, type);
3911 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3912 struct ofp10_phy_port *opp)
3914 memset(opp, 0, sizeof *opp);
3916 opp->port_no = htons(ofp_to_u16(pp->port_no));
3917 opp->hw_addr = pp->hw_addr;
3918 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3920 opp->config = htonl(pp->config & OFPPC10_ALL);
3921 opp->state = htonl(pp->state & OFPPS10_ALL);
3923 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3924 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3925 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3926 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3930 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3931 struct ofp11_port *op)
3933 memset(op, 0, sizeof *op);
3935 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3936 op->hw_addr = pp->hw_addr;
3937 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3939 op->config = htonl(pp->config & OFPPC11_ALL);
3940 op->state = htonl(pp->state & OFPPS11_ALL);
3942 op->curr = netdev_port_features_to_ofp11(pp->curr);
3943 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3944 op->supported = netdev_port_features_to_ofp11(pp->supported);
3945 op->peer = netdev_port_features_to_ofp11(pp->peer);
3947 op->curr_speed = htonl(pp->curr_speed);
3948 op->max_speed = htonl(pp->max_speed);
3952 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3955 struct ofp14_port *op;
3956 struct ofp14_port_desc_prop_ethernet *eth;
3958 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3960 op = ofpbuf_put_zeros(b, sizeof *op);
3961 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3962 op->length = htons(sizeof *op + sizeof *eth);
3963 op->hw_addr = pp->hw_addr;
3964 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3965 op->config = htonl(pp->config & OFPPC11_ALL);
3966 op->state = htonl(pp->state & OFPPS11_ALL);
3968 eth = ofpbuf_put_zeros(b, sizeof *eth);
3969 eth->type = htons(OFPPDPT14_ETHERNET);
3970 eth->length = htons(sizeof *eth);
3971 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3972 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3973 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3974 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3975 eth->curr_speed = htonl(pp->curr_speed);
3976 eth->max_speed = htonl(pp->max_speed);
3980 ofputil_put_phy_port(enum ofp_version ofp_version,
3981 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3983 switch (ofp_version) {
3984 case OFP10_VERSION: {
3985 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3986 ofputil_encode_ofp10_phy_port(pp, opp);
3992 case OFP13_VERSION: {
3993 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3994 ofputil_encode_ofp11_port(pp, op);
4000 ofputil_put_ofp14_port(pp, b);
4009 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
4015 ofpbuf_use_const(&b, request, ntohs(request->length));
4016 raw = ofpraw_pull_assert(&b);
4017 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4020 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4021 ovs_be32 *ofp11_port;
4023 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4024 return ofputil_port_from_ofp11(*ofp11_port, port);
4031 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4034 struct ofpbuf *request;
4036 switch (ofp_version) {
4042 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4045 case OFP15_VERSION:{
4046 struct ofp15_port_desc_request *req;
4047 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4049 req = ofpbuf_put_zeros(request, sizeof *req);
4050 req->port_no = ofputil_port_to_ofp11(port);
4061 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4062 struct ovs_list *replies)
4064 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4065 size_t start_ofs = reply->size;
4067 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4068 ofpmp_postappend(replies, start_ofs);
4071 /* ofputil_switch_features */
4073 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4074 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4075 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4076 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4077 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4078 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4079 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4080 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4083 ofputil_capabilities_mask(enum ofp_version ofp_version)
4085 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4086 switch (ofp_version) {
4089 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4094 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4096 /* Caller needs to check osf->header.version itself */
4101 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4102 * abstract representation in '*features'. Initializes '*b' to iterate over
4103 * the OpenFlow port structures following 'osf' with later calls to
4104 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4105 * OFPERR_* value. */
4107 ofputil_decode_switch_features(const struct ofp_header *oh,
4108 struct ofputil_switch_features *features,
4111 const struct ofp_switch_features *osf;
4114 ofpbuf_use_const(b, oh, ntohs(oh->length));
4115 raw = ofpraw_pull_assert(b);
4117 osf = ofpbuf_pull(b, sizeof *osf);
4118 features->datapath_id = ntohll(osf->datapath_id);
4119 features->n_buffers = ntohl(osf->n_buffers);
4120 features->n_tables = osf->n_tables;
4121 features->auxiliary_id = 0;
4123 features->capabilities = ntohl(osf->capabilities) &
4124 ofputil_capabilities_mask(oh->version);
4126 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4127 if (osf->capabilities & htonl(OFPC10_STP)) {
4128 features->capabilities |= OFPUTIL_C_STP;
4130 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4132 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4133 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4134 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4135 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4137 features->ofpacts = 0;
4138 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4139 features->auxiliary_id = osf->auxiliary_id;
4142 return OFPERR_OFPBRC_BAD_VERSION;
4148 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4149 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4150 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4152 * Given a buffer 'b' that contains a Features Reply message, this message
4153 * checks if it contains a complete list of the switch's ports. Returns true,
4154 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4155 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4158 * When this function returns false, the caller should send an OFPST_PORT_DESC
4159 * stats request to get the ports. */
4161 ofputil_switch_features_has_ports(struct ofpbuf *b)
4163 struct ofp_header *oh = b->data;
4164 size_t phy_port_size;
4166 if (oh->version >= OFP13_VERSION) {
4167 /* OpenFlow 1.3+ never has ports in the feature reply. */
4171 phy_port_size = (oh->version == OFP10_VERSION
4172 ? sizeof(struct ofp10_phy_port)
4173 : sizeof(struct ofp11_port));
4174 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4175 /* There's room for additional ports in the feature reply.
4176 * Assume that the list is complete. */
4180 /* The feature reply has no room for more ports. Probably the list is
4181 * truncated. Drop the ports and tell the caller to retrieve them with
4182 * OFPST_PORT_DESC. */
4183 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4184 ofpmsg_update_length(b);
4188 /* Returns a buffer owned by the caller that encodes 'features' in the format
4189 * required by 'protocol' with the given 'xid'. The caller should append port
4190 * information to the buffer with subsequent calls to
4191 * ofputil_put_switch_features_port(). */
4193 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4194 enum ofputil_protocol protocol, ovs_be32 xid)
4196 struct ofp_switch_features *osf;
4198 enum ofp_version version;
4201 version = ofputil_protocol_to_ofp_version(protocol);
4204 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4208 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4213 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4218 b = ofpraw_alloc_xid(raw, version, xid, 0);
4219 osf = ofpbuf_put_zeros(b, sizeof *osf);
4220 osf->datapath_id = htonll(features->datapath_id);
4221 osf->n_buffers = htonl(features->n_buffers);
4222 osf->n_tables = features->n_tables;
4224 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4225 osf->capabilities = htonl(features->capabilities &
4226 ofputil_capabilities_mask(version));
4229 if (features->capabilities & OFPUTIL_C_STP) {
4230 osf->capabilities |= htonl(OFPC10_STP);
4232 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4238 osf->auxiliary_id = features->auxiliary_id;
4242 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4243 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4253 /* Encodes 'pp' into the format required by the switch_features message already
4254 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4255 * and appends the encoded version to 'b'. */
4257 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4260 const struct ofp_header *oh = b->data;
4262 if (oh->version < OFP13_VERSION) {
4263 /* Try adding a port description to the message, but drop it again if
4264 * the buffer overflows. (This possibility for overflow is why
4265 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4266 size_t start_ofs = b->size;
4267 ofputil_put_phy_port(oh->version, pp, b);
4268 if (b->size > UINT16_MAX) {
4269 b->size = start_ofs;
4274 /* ofputil_port_status */
4276 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4277 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4279 ofputil_decode_port_status(const struct ofp_header *oh,
4280 struct ofputil_port_status *ps)
4282 const struct ofp_port_status *ops;
4286 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4287 ofpraw_pull_assert(&b);
4288 ops = ofpbuf_pull(&b, sizeof *ops);
4290 if (ops->reason != OFPPR_ADD &&
4291 ops->reason != OFPPR_DELETE &&
4292 ops->reason != OFPPR_MODIFY) {
4293 return OFPERR_NXBRC_BAD_REASON;
4295 ps->reason = ops->reason;
4297 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4298 ovs_assert(retval != EOF);
4302 /* Converts the abstract form of a "port status" message in '*ps' into an
4303 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4304 * a buffer owned by the caller. */
4306 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4307 enum ofputil_protocol protocol)
4309 struct ofp_port_status *ops;
4311 enum ofp_version version;
4314 version = ofputil_protocol_to_ofp_version(protocol);
4317 raw = OFPRAW_OFPT10_PORT_STATUS;
4323 raw = OFPRAW_OFPT11_PORT_STATUS;
4328 raw = OFPRAW_OFPT14_PORT_STATUS;
4335 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4336 ops = ofpbuf_put_zeros(b, sizeof *ops);
4337 ops->reason = ps->reason;
4338 ofputil_put_phy_port(version, &ps->desc, b);
4339 ofpmsg_update_length(b);
4343 /* ofputil_port_mod */
4346 parse_port_mod_ethernet_property(struct ofpbuf *property,
4347 struct ofputil_port_mod *pm)
4349 struct ofp14_port_mod_prop_ethernet *eth = property->data;
4351 if (property->size != sizeof *eth) {
4352 return OFPERR_OFPBRC_BAD_LEN;
4355 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4359 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4360 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4362 ofputil_decode_port_mod(const struct ofp_header *oh,
4363 struct ofputil_port_mod *pm, bool loose)
4368 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4369 raw = ofpraw_pull_assert(&b);
4371 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4372 const struct ofp10_port_mod *opm = b.data;
4374 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4375 pm->hw_addr = opm->hw_addr;
4376 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4377 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4378 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4379 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4380 const struct ofp11_port_mod *opm = b.data;
4383 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4388 pm->hw_addr = opm->hw_addr;
4389 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4390 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4391 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4392 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4393 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4396 memset(pm, 0, sizeof *pm);
4398 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4403 pm->hw_addr = opm->hw_addr;
4404 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4405 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4407 while (b.size > 0) {
4408 struct ofpbuf property;
4412 error = ofputil_pull_property(&b, &property, &type);
4418 case OFPPMPT14_ETHERNET:
4419 error = parse_port_mod_ethernet_property(&property, pm);
4423 log_property(loose, "unknown port_mod property %"PRIu16, type);
4426 } else if (type == OFPPMPT14_EXPERIMENTER) {
4427 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4429 error = OFPERR_OFPBRC_BAD_TYPE;
4439 return OFPERR_OFPBRC_BAD_TYPE;
4442 pm->config &= pm->mask;
4446 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4447 * message suitable for 'protocol', and returns that encoded form in a buffer
4448 * owned by the caller. */
4450 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4451 enum ofputil_protocol protocol)
4453 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4456 switch (ofp_version) {
4457 case OFP10_VERSION: {
4458 struct ofp10_port_mod *opm;
4460 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4461 opm = ofpbuf_put_zeros(b, sizeof *opm);
4462 opm->port_no = htons(ofp_to_u16(pm->port_no));
4463 opm->hw_addr = pm->hw_addr;
4464 opm->config = htonl(pm->config & OFPPC10_ALL);
4465 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4466 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4472 case OFP13_VERSION: {
4473 struct ofp11_port_mod *opm;
4475 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4476 opm = ofpbuf_put_zeros(b, sizeof *opm);
4477 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4478 opm->hw_addr = pm->hw_addr;
4479 opm->config = htonl(pm->config & OFPPC11_ALL);
4480 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4481 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4485 case OFP15_VERSION: {
4486 struct ofp14_port_mod_prop_ethernet *eth;
4487 struct ofp14_port_mod *opm;
4489 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4490 opm = ofpbuf_put_zeros(b, sizeof *opm);
4491 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4492 opm->hw_addr = pm->hw_addr;
4493 opm->config = htonl(pm->config & OFPPC11_ALL);
4494 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4496 if (pm->advertise) {
4497 eth = ofpbuf_put_zeros(b, sizeof *eth);
4498 eth->type = htons(OFPPMPT14_ETHERNET);
4499 eth->length = htons(sizeof *eth);
4500 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4511 /* Table features. */
4514 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4519 error = ofputil_pull_property(msg, payload, typep);
4520 if (payload && !error) {
4521 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4527 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4532 while (payload->size > 0) {
4536 error = ofputil_pull_property__(payload, NULL, 1, &type);
4540 if (type < CHAR_BIT * sizeof types) {
4541 types |= 1u << type;
4545 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4550 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4553 while (payload->size > 0) {
4554 enum ovs_instruction_type inst;
4558 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4559 * It seems clear that they aren't padded to 8 bytes, though, because
4560 * both standards say that "non-experimenter instructions are 4 bytes"
4561 * and do not mention any padding before the first instruction ID.
4562 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4563 * aligned on an odd 4-byte boundary.)
4565 * Anyway, we just assume they're all glommed together on byte
4567 error = ofputil_pull_property__(payload, NULL, 1, &ofpit);
4572 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4574 *insts |= 1u << inst;
4575 } else if (!loose) {
4583 parse_table_features_next_table(struct ofpbuf *payload,
4584 unsigned long int *next_tables)
4588 memset(next_tables, 0, bitmap_n_bytes(255));
4589 for (i = 0; i < payload->size; i++) {
4590 uint8_t id = ((const uint8_t *) payload->data)[i];
4592 return OFPERR_OFPBPC_BAD_VALUE;
4594 bitmap_set1(next_tables, id);
4600 parse_oxms(struct ofpbuf *payload, bool loose,
4601 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4603 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4604 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4606 while (payload->size > 0) {
4607 const struct mf_field *field;
4611 error = nx_pull_header(payload, &field, &hasmask);
4613 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4614 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4620 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4621 return OFPERR_OFPBMC_BAD_MASK;
4625 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4626 return OFPERR_OFPBMC_BAD_MASK;
4631 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4632 * ofputil_table_features in 'tf'.
4634 * If 'loose' is true, this function ignores properties and values that it does
4635 * not understand, as a controller would want to do when interpreting
4636 * capabilities provided by a switch. If 'loose' is false, this function
4637 * treats unknown properties and values as an error, as a switch would want to
4638 * do when interpreting a configuration request made by a controller.
4640 * A single OpenFlow message can specify features for multiple tables. Calling
4641 * this function multiple times for a single 'msg' iterates through the tables
4642 * in the message. The caller must initially leave 'msg''s layer pointers null
4643 * and not modify them between calls.
4645 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4646 * a positive "enum ofperr" value. */
4648 ofputil_decode_table_features(struct ofpbuf *msg,
4649 struct ofputil_table_features *tf, bool loose)
4651 const struct ofp_header *oh;
4652 struct ofp13_table_features *otf;
4653 struct ofpbuf properties;
4656 memset(tf, 0, sizeof *tf);
4659 ofpraw_pull_assert(msg);
4667 if (msg->size < sizeof *otf) {
4668 return OFPERR_OFPBPC_BAD_LEN;
4672 len = ntohs(otf->length);
4673 if (len < sizeof *otf || len % 8 || len > msg->size) {
4674 return OFPERR_OFPBPC_BAD_LEN;
4676 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4677 ofpbuf_pull(&properties, sizeof *otf);
4679 tf->table_id = otf->table_id;
4680 if (tf->table_id == OFPTT_ALL) {
4681 return OFPERR_OFPTFFC_BAD_TABLE;
4684 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4685 tf->metadata_match = otf->metadata_match;
4686 tf->metadata_write = otf->metadata_write;
4687 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4688 if (oh->version >= OFP14_VERSION) {
4689 uint32_t caps = ntohl(otf->capabilities);
4690 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4691 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4693 tf->supports_eviction = -1;
4694 tf->supports_vacancy_events = -1;
4696 tf->max_entries = ntohl(otf->max_entries);
4698 while (properties.size > 0) {
4699 struct ofpbuf payload;
4703 error = pull_table_feature_property(&properties, &payload, &type);
4708 switch ((enum ofp13_table_feature_prop_type) type) {
4709 case OFPTFPT13_INSTRUCTIONS:
4710 error = parse_instruction_ids(&payload, loose,
4711 &tf->nonmiss.instructions);
4713 case OFPTFPT13_INSTRUCTIONS_MISS:
4714 error = parse_instruction_ids(&payload, loose,
4715 &tf->miss.instructions);
4718 case OFPTFPT13_NEXT_TABLES:
4719 error = parse_table_features_next_table(&payload,
4722 case OFPTFPT13_NEXT_TABLES_MISS:
4723 error = parse_table_features_next_table(&payload, tf->miss.next);
4726 case OFPTFPT13_WRITE_ACTIONS:
4727 error = parse_action_bitmap(&payload, oh->version,
4728 &tf->nonmiss.write.ofpacts);
4730 case OFPTFPT13_WRITE_ACTIONS_MISS:
4731 error = parse_action_bitmap(&payload, oh->version,
4732 &tf->miss.write.ofpacts);
4735 case OFPTFPT13_APPLY_ACTIONS:
4736 error = parse_action_bitmap(&payload, oh->version,
4737 &tf->nonmiss.apply.ofpacts);
4739 case OFPTFPT13_APPLY_ACTIONS_MISS:
4740 error = parse_action_bitmap(&payload, oh->version,
4741 &tf->miss.apply.ofpacts);
4744 case OFPTFPT13_MATCH:
4745 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4747 case OFPTFPT13_WILDCARDS:
4748 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4751 case OFPTFPT13_WRITE_SETFIELD:
4752 error = parse_oxms(&payload, loose,
4753 &tf->nonmiss.write.set_fields, NULL);
4755 case OFPTFPT13_WRITE_SETFIELD_MISS:
4756 error = parse_oxms(&payload, loose,
4757 &tf->miss.write.set_fields, NULL);
4759 case OFPTFPT13_APPLY_SETFIELD:
4760 error = parse_oxms(&payload, loose,
4761 &tf->nonmiss.apply.set_fields, NULL);
4763 case OFPTFPT13_APPLY_SETFIELD_MISS:
4764 error = parse_oxms(&payload, loose,
4765 &tf->miss.apply.set_fields, NULL);
4768 case OFPTFPT13_EXPERIMENTER:
4769 case OFPTFPT13_EXPERIMENTER_MISS:
4771 log_property(loose, "unknown table features property %"PRIu16,
4773 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4781 /* Fix inconsistencies:
4783 * - Turn on 'match' bits that are set in 'mask', because maskable
4784 * fields are matchable.
4786 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4787 * that is arbitrarily maskable can be wildcarded entirely.
4789 * - Turn off 'wildcard' bits that are not in 'match', because a field
4790 * must be matchable for it to be meaningfully wildcarded. */
4791 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4792 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4793 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4798 /* Encodes and returns a request to obtain the table features of a switch.
4799 * The message is encoded for OpenFlow version 'ofp_version'. */
4801 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4803 struct ofpbuf *request = NULL;
4805 switch (ofp_version) {
4809 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4810 "(\'-O OpenFlow13\')");
4814 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4825 put_fields_property(struct ofpbuf *reply,
4826 const struct mf_bitmap *fields,
4827 const struct mf_bitmap *masks,
4828 enum ofp13_table_feature_prop_type property,
4829 enum ofp_version version)
4834 start_ofs = start_property(reply, property);
4835 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4836 nx_put_header(reply, field, version,
4837 masks && bitmap_is_set(masks->bm, field));
4839 end_property(reply, start_ofs);
4843 put_table_action_features(struct ofpbuf *reply,
4844 const struct ofputil_table_action_features *taf,
4845 enum ofp13_table_feature_prop_type actions_type,
4846 enum ofp13_table_feature_prop_type set_fields_type,
4847 int miss_offset, enum ofp_version version)
4851 start_ofs = start_property(reply, actions_type + miss_offset);
4852 put_bitmap_properties(reply,
4853 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4855 end_property(reply, start_ofs);
4857 put_fields_property(reply, &taf->set_fields, NULL,
4858 set_fields_type + miss_offset, version);
4862 put_table_instruction_features(
4863 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4864 int miss_offset, enum ofp_version version)
4869 start_ofs = start_property(reply, OFPTFPT13_INSTRUCTIONS + miss_offset);
4870 put_bitmap_properties(reply,
4871 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4873 end_property(reply, start_ofs);
4875 start_ofs = start_property(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4876 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4877 ofpbuf_put(reply, &table_id, 1);
4879 end_property(reply, start_ofs);
4881 put_table_action_features(reply, &tif->write,
4882 OFPTFPT13_WRITE_ACTIONS,
4883 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4884 put_table_action_features(reply, &tif->apply,
4885 OFPTFPT13_APPLY_ACTIONS,
4886 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4890 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4891 struct ovs_list *replies)
4893 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4894 enum ofp_version version = ofpmp_version(replies);
4895 size_t start_ofs = reply->size;
4896 struct ofp13_table_features *otf;
4898 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4899 otf->table_id = tf->table_id;
4900 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4901 otf->metadata_match = tf->metadata_match;
4902 otf->metadata_write = tf->metadata_write;
4903 if (version >= OFP14_VERSION) {
4904 if (tf->supports_eviction) {
4905 otf->capabilities |= htonl(OFPTC14_EVICTION);
4907 if (tf->supports_vacancy_events) {
4908 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4911 otf->max_entries = htonl(tf->max_entries);
4913 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4914 put_table_instruction_features(reply, &tf->miss, 1, version);
4916 put_fields_property(reply, &tf->match, &tf->mask,
4917 OFPTFPT13_MATCH, version);
4918 put_fields_property(reply, &tf->wildcard, NULL,
4919 OFPTFPT13_WILDCARDS, version);
4921 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4922 otf->length = htons(reply->size - start_ofs);
4923 ofpmp_postappend(replies, start_ofs);
4927 parse_table_desc_eviction_property(struct ofpbuf *property,
4928 struct ofputil_table_desc *td)
4930 struct ofp14_table_mod_prop_eviction *ote = property->data;
4932 if (property->size != sizeof *ote) {
4933 return OFPERR_OFPBPC_BAD_LEN;
4936 td->eviction_flags = ntohl(ote->flags);
4941 parse_table_desc_vacancy_property(struct ofpbuf *property,
4942 struct ofputil_table_desc *td)
4944 struct ofp14_table_mod_prop_vacancy *otv = property->data;
4946 if (property->size != sizeof *otv) {
4947 return OFPERR_OFPBPC_BAD_LEN;
4950 td->table_vacancy.vacancy_down = otv->vacancy_down;
4951 td->table_vacancy.vacancy_up = otv->vacancy_up;
4952 td->table_vacancy.vacancy = otv->vacancy;
4956 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
4957 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
4958 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
4961 ofputil_decode_table_desc(struct ofpbuf *msg,
4962 struct ofputil_table_desc *td,
4963 enum ofp_version version)
4965 struct ofp14_table_desc *otd;
4966 struct ofpbuf properties;
4969 memset(td, 0, sizeof *td);
4972 ofpraw_pull_assert(msg);
4979 otd = ofpbuf_try_pull(msg, sizeof *otd);
4981 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
4982 "leftover bytes at end", msg->size);
4983 return OFPERR_OFPBRC_BAD_LEN;
4986 td->table_id = otd->table_id;
4987 length = ntohs(otd->length);
4988 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
4989 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
4990 "length %"PRIuSIZE, length);
4991 return OFPERR_OFPBRC_BAD_LEN;
4993 length -= sizeof *otd;
4994 ofpbuf_use_const(&properties, ofpbuf_pull(msg, length), length);
4996 td->eviction = ofputil_decode_table_eviction(otd->config, version);
4997 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
4998 td->eviction_flags = UINT32_MAX;
5000 while (properties.size > 0) {
5001 struct ofpbuf payload;
5005 error = ofputil_pull_property(&properties, &payload, &type);
5011 case OFPTMPT14_EVICTION:
5012 error = parse_table_desc_eviction_property(&payload, td);
5015 case OFPTMPT14_VACANCY:
5016 error = parse_table_desc_vacancy_property(&payload, td);
5020 log_property(true, "unknown table_desc property %"PRIu16, type);
5033 /* Encodes and returns a request to obtain description of tables of a switch.
5034 * The message is encoded for OpenFlow version 'ofp_version'. */
5036 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
5038 struct ofpbuf *request = NULL;
5040 if (ofp_version >= OFP14_VERSION) {
5041 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
5044 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
5045 "(\'-O OpenFlow14\')");
5051 /* Function to append Table desc information in a reply list. */
5053 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
5054 struct ovs_list *replies,
5055 enum ofp_version version)
5057 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5059 struct ofp14_table_desc *otd;
5061 start_otd = reply->size;
5062 ofpbuf_put_zeros(reply, sizeof *otd);
5063 if (td->eviction_flags != UINT32_MAX) {
5064 struct ofp14_table_mod_prop_eviction *ote;
5066 ote = ofpbuf_put_zeros(reply, sizeof *ote);
5067 ote->type = htons(OFPTMPT14_EVICTION);
5068 ote->length = htons(sizeof *ote);
5069 ote->flags = htonl(td->eviction_flags);
5071 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5072 struct ofp14_table_mod_prop_vacancy *otv;
5074 otv = ofpbuf_put_zeros(reply, sizeof *otv);
5075 otv->type = htons(OFPTMPT14_VACANCY);
5076 otv->length = htons(sizeof *otv);
5077 otv->vacancy_down = td->table_vacancy.vacancy_down;
5078 otv->vacancy_up = td->table_vacancy.vacancy_up;
5079 otv->vacancy = td->table_vacancy.vacancy;
5082 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5083 otd->length = htons(reply->size - start_otd);
5084 otd->table_id = td->table_id;
5085 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5086 td->eviction, td->vacancy,
5088 ofpmp_postappend(replies, start_otd);
5091 /* This function parses Vacancy property, and decodes the
5092 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5093 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5094 * greater than vacancy_up and also when current vacancy has non-zero
5095 * value. Returns 0 on success. */
5097 parse_table_mod_vacancy_property(struct ofpbuf *property,
5098 struct ofputil_table_mod *tm)
5100 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5102 if (property->size != sizeof *otv) {
5103 return OFPERR_OFPBPC_BAD_LEN;
5105 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5106 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5107 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5108 log_property(false, "Value of vacancy_down is greater than "
5110 return OFPERR_OFPBPC_BAD_VALUE;
5112 if (tm->table_vacancy.vacancy_down > 100 ||
5113 tm->table_vacancy.vacancy_up > 100) {
5114 log_property(false, "Vacancy threshold percentage should not be"
5115 "greater than 100");
5116 return OFPERR_OFPBPC_BAD_VALUE;
5118 tm->table_vacancy.vacancy = otv->vacancy;
5119 if (tm->table_vacancy.vacancy) {
5120 log_property(false, "Vacancy value should be zero for table-mod "
5122 return OFPERR_OFPBPC_BAD_VALUE;
5127 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5128 * table configuration (a table mod, table stats, or table features message),
5129 * returns the table vacancy configuration that it specifies.
5131 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5132 * so for other 'version' this function always returns
5133 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5134 static enum ofputil_table_vacancy
5135 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5137 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5138 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5139 : OFPUTIL_TABLE_VACANCY_OFF);
5143 parse_table_mod_eviction_property(struct ofpbuf *property,
5144 struct ofputil_table_mod *tm)
5146 struct ofp14_table_mod_prop_eviction *ote = property->data;
5148 if (property->size != sizeof *ote) {
5149 return OFPERR_OFPBPC_BAD_LEN;
5152 tm->eviction_flags = ntohl(ote->flags);
5156 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5157 * table configuration (a table mod, table stats, or table features message),
5158 * returns the table eviction configuration that it specifies.
5160 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5161 * so for other 'version' values this function always returns
5162 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5163 static enum ofputil_table_eviction
5164 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5166 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5167 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5168 : OFPUTIL_TABLE_EVICTION_OFF);
5171 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5172 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5173 * 'eviction' values. */
5175 ofputil_encode_table_config(enum ofputil_table_miss miss,
5176 enum ofputil_table_eviction eviction,
5177 enum ofputil_table_vacancy vacancy,
5178 enum ofp_version version)
5180 uint32_t config = 0;
5181 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5182 * information on the crazy evolution of this field. */
5185 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5190 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5192 case OFPUTIL_TABLE_MISS_DEFAULT:
5193 /* Really this shouldn't be used for encoding (the caller should
5194 * provide a specific value) but I can't imagine that defaulting to
5195 * the fall-through case here will hurt. */
5196 case OFPUTIL_TABLE_MISS_CONTROLLER:
5198 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5199 case OFPUTIL_TABLE_MISS_CONTINUE:
5200 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5201 case OFPUTIL_TABLE_MISS_DROP:
5202 return htonl(OFPTC11_TABLE_MISS_DROP);
5207 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5208 * flags, so this is correct. */
5213 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5214 * OFPTC14_VACANCY_EVENTS. */
5215 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5216 config |= OFPTC14_EVICTION;
5218 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5219 config |= OFPTC14_VACANCY_EVENTS;
5221 return htonl(config);
5227 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5228 * table configuration (a table mod, table stats, or table features message),
5229 * returns the table miss configuration that it specifies.
5231 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5232 * other 'version' values this function always returns
5233 * OFPUTIL_TABLE_MISS_DEFAULT. */
5234 static enum ofputil_table_miss
5235 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5237 uint32_t config = ntohl(config_);
5239 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5240 switch (config & OFPTC11_TABLE_MISS_MASK) {
5241 case OFPTC11_TABLE_MISS_CONTROLLER:
5242 return OFPUTIL_TABLE_MISS_CONTROLLER;
5244 case OFPTC11_TABLE_MISS_CONTINUE:
5245 return OFPUTIL_TABLE_MISS_CONTINUE;
5247 case OFPTC11_TABLE_MISS_DROP:
5248 return OFPUTIL_TABLE_MISS_DROP;
5251 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5252 return OFPUTIL_TABLE_MISS_CONTROLLER;
5255 return OFPUTIL_TABLE_MISS_DEFAULT;
5259 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5260 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5262 ofputil_decode_table_mod(const struct ofp_header *oh,
5263 struct ofputil_table_mod *pm)
5268 memset(pm, 0, sizeof *pm);
5269 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5270 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5271 pm->eviction_flags = UINT32_MAX;
5272 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5273 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5274 raw = ofpraw_pull_assert(&b);
5276 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5277 const struct ofp11_table_mod *otm = b.data;
5279 pm->table_id = otm->table_id;
5280 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5281 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5282 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5284 pm->table_id = otm->table_id;
5285 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5286 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5287 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5288 while (b.size > 0) {
5289 struct ofpbuf property;
5293 error = ofputil_pull_property(&b, &property, &type);
5299 case OFPTMPT14_EVICTION:
5300 error = parse_table_mod_eviction_property(&property, pm);
5303 case OFPTMPT14_VACANCY:
5304 error = parse_table_mod_vacancy_property(&property, pm);
5308 error = OFPERR_OFPBRC_BAD_TYPE;
5317 return OFPERR_OFPBRC_BAD_TYPE;
5323 /* Converts the abstract form of a "table mod" message in '*tm' into an
5324 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5325 * buffer owned by the caller. */
5327 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5328 enum ofputil_protocol protocol)
5330 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5333 switch (ofp_version) {
5334 case OFP10_VERSION: {
5335 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5336 "(\'-O OpenFlow11\')");
5341 case OFP13_VERSION: {
5342 struct ofp11_table_mod *otm;
5344 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5345 otm = ofpbuf_put_zeros(b, sizeof *otm);
5346 otm->table_id = tm->table_id;
5347 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5348 tm->vacancy, ofp_version);
5352 case OFP15_VERSION: {
5353 struct ofp14_table_mod *otm;
5354 struct ofp14_table_mod_prop_eviction *ote;
5355 struct ofp14_table_mod_prop_vacancy *otv;
5357 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5358 otm = ofpbuf_put_zeros(b, sizeof *otm);
5359 otm->table_id = tm->table_id;
5360 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5361 tm->vacancy, ofp_version);
5363 if (tm->eviction_flags != UINT32_MAX) {
5364 ote = ofpbuf_put_zeros(b, sizeof *ote);
5365 ote->type = htons(OFPTMPT14_EVICTION);
5366 ote->length = htons(sizeof *ote);
5367 ote->flags = htonl(tm->eviction_flags);
5369 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5370 otv = ofpbuf_put_zeros(b, sizeof *otv);
5371 otv->type = htons(OFPTMPT14_VACANCY);
5372 otv->length = htons(sizeof *otv);
5373 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5374 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5385 /* ofputil_role_request */
5387 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5388 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5389 * OFPERR_* value. */
5391 ofputil_decode_role_message(const struct ofp_header *oh,
5392 struct ofputil_role_request *rr)
5397 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5398 raw = ofpraw_pull_assert(&b);
5400 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5401 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5402 const struct ofp12_role_request *orr = b.msg;
5404 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5405 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5406 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5407 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5408 return OFPERR_OFPRRFC_BAD_ROLE;
5411 rr->role = ntohl(orr->role);
5412 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5413 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5414 : orr->generation_id == OVS_BE64_MAX) {
5415 rr->have_generation_id = false;
5416 rr->generation_id = 0;
5418 rr->have_generation_id = true;
5419 rr->generation_id = ntohll(orr->generation_id);
5421 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5422 raw == OFPRAW_NXT_ROLE_REPLY) {
5423 const struct nx_role_request *nrr = b.msg;
5425 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5426 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5427 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5429 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5430 nrr->role != htonl(NX_ROLE_MASTER) &&
5431 nrr->role != htonl(NX_ROLE_SLAVE)) {
5432 return OFPERR_OFPRRFC_BAD_ROLE;
5435 rr->role = ntohl(nrr->role) + 1;
5436 rr->have_generation_id = false;
5437 rr->generation_id = 0;
5445 /* Returns an encoded form of a role reply suitable for the "request" in a
5446 * buffer owned by the caller. */
5448 ofputil_encode_role_reply(const struct ofp_header *request,
5449 const struct ofputil_role_request *rr)
5454 raw = ofpraw_decode_assert(request);
5455 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5456 struct ofp12_role_request *orr;
5458 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5459 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5461 orr->role = htonl(rr->role);
5462 orr->generation_id = htonll(rr->have_generation_id
5465 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5466 struct nx_role_request *nrr;
5468 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5469 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5470 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5472 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5473 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5474 nrr->role = htonl(rr->role - 1);
5482 /* Encodes "role status" message 'status' for sending in the given
5483 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5484 * otherwise a null pointer. */
5486 ofputil_encode_role_status(const struct ofputil_role_status *status,
5487 enum ofputil_protocol protocol)
5489 enum ofp_version version;
5491 version = ofputil_protocol_to_ofp_version(protocol);
5492 if (version >= OFP14_VERSION) {
5493 struct ofp14_role_status *rstatus;
5496 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5498 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5499 rstatus->role = htonl(status->role);
5500 rstatus->reason = status->reason;
5501 rstatus->generation_id = htonll(status->generation_id);
5510 ofputil_decode_role_status(const struct ofp_header *oh,
5511 struct ofputil_role_status *rs)
5515 const struct ofp14_role_status *r;
5517 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5518 raw = ofpraw_pull_assert(&b);
5519 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5522 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5523 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5524 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5525 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5526 return OFPERR_OFPRRFC_BAD_ROLE;
5529 rs->role = ntohl(r->role);
5530 rs->generation_id = ntohll(r->generation_id);
5531 rs->reason = r->reason;
5536 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5537 * 'protocol' must be for OpenFlow 1.4 or later. */
5539 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5540 enum ofputil_protocol protocol)
5542 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5543 struct ofpbuf *inner;
5545 switch (rf->reason) {
5546 case OFPRFR_GROUP_MOD:
5547 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5550 case OFPRFR_METER_MOD:
5551 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5554 case OFPRFR_N_REASONS:
5559 struct ofp_header *inner_oh = inner->data;
5560 inner_oh->xid = rf->xid;
5561 inner_oh->length = htons(inner->size);
5563 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5564 ofp_version, htonl(0),
5566 ofpbuf_put(outer, inner->data, inner->size);
5567 ofpbuf_delete(inner);
5572 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5573 * form into '*rf' and returns 0, and the caller is later responsible for
5574 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5575 * failure, returns an ofperr and '*rf' is indeterminate. */
5577 ofputil_decode_requestforward(const struct ofp_header *outer,
5578 struct ofputil_requestforward *rf)
5583 ofpbuf_use_const(&b, outer, ntohs(outer->length));
5585 /* Skip past outer message. */
5586 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5587 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5589 /* Validate inner message. */
5590 if (b.size < sizeof(struct ofp_header)) {
5591 return OFPERR_OFPBFC_MSG_BAD_LEN;
5593 const struct ofp_header *inner = b.data;
5594 unsigned int inner_len = ntohs(inner->length);
5595 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5596 return OFPERR_OFPBFC_MSG_BAD_LEN;
5598 if (inner->version != outer->version) {
5599 return OFPERR_OFPBRC_BAD_VERSION;
5602 /* Parse inner message. */
5604 error = ofptype_decode(&type, inner);
5609 rf->xid = inner->xid;
5610 if (type == OFPTYPE_GROUP_MOD) {
5611 rf->reason = OFPRFR_GROUP_MOD;
5612 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5613 error = ofputil_decode_group_mod(inner, rf->group_mod);
5615 free(rf->group_mod);
5618 } else if (type == OFPTYPE_METER_MOD) {
5619 rf->reason = OFPRFR_METER_MOD;
5620 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5621 ofpbuf_init(&rf->bands, 64);
5622 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5624 free(rf->meter_mod);
5625 ofpbuf_uninit(&rf->bands);
5629 return OFPERR_OFPBFC_MSG_UNSUP;
5635 /* Frees the content of 'rf', which should have been initialized through a
5636 * successful call to ofputil_decode_requestforward(). */
5638 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5644 switch (rf->reason) {
5645 case OFPRFR_GROUP_MOD:
5646 ofputil_uninit_group_mod(rf->group_mod);
5647 free(rf->group_mod);
5650 case OFPRFR_METER_MOD:
5651 ofpbuf_uninit(&rf->bands);
5652 free(rf->meter_mod);
5655 case OFPRFR_N_REASONS:
5662 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5663 * matched and a field that must be wildcarded. This function returns a bitmap
5664 * that contains both kinds of fields. */
5665 static struct mf_bitmap
5666 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5668 struct mf_bitmap wc = features->match;
5669 bitmap_not(wc.bm, MFF_N_IDS);
5670 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5674 struct ofp10_wc_map {
5675 enum ofp10_flow_wildcards wc10;
5676 enum mf_field_id mf;
5679 static const struct ofp10_wc_map ofp10_wc_map[] = {
5680 { OFPFW10_IN_PORT, MFF_IN_PORT },
5681 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5682 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5683 { OFPFW10_DL_DST, MFF_ETH_DST},
5684 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5685 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5686 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5687 { OFPFW10_TP_DST, MFF_TCP_DST },
5688 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5689 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5690 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5691 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5695 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5697 const struct ofp10_wc_map *p;
5700 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5701 if (bitmap_is_set(fields->bm, p->mf)) {
5708 static struct mf_bitmap
5709 mf_bitmap_from_of10(ovs_be32 wc10_)
5711 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5712 const struct ofp10_wc_map *p;
5713 uint32_t wc10 = ntohl(wc10_);
5715 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5716 if (wc10 & p->wc10) {
5717 bitmap_set1(fields.bm, p->mf);
5724 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5725 const struct ofputil_table_features *features,
5728 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5729 struct ofp10_table_stats *out;
5731 out = ofpbuf_put_zeros(buf, sizeof *out);
5732 out->table_id = features->table_id;
5733 ovs_strlcpy(out->name, features->name, sizeof out->name);
5734 out->wildcards = mf_bitmap_to_of10(&wc);
5735 out->max_entries = htonl(features->max_entries);
5736 out->active_count = htonl(stats->active_count);
5737 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5738 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5741 struct ofp11_wc_map {
5742 enum ofp11_flow_match_fields wc11;
5743 enum mf_field_id mf;
5746 static const struct ofp11_wc_map ofp11_wc_map[] = {
5747 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5748 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5749 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5750 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5751 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5752 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5753 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5754 { OFPFMF11_TP_DST, MFF_TCP_DST },
5755 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5756 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5757 /* I don't know what OFPFMF11_TYPE means. */
5758 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5759 { OFPFMF11_DL_DST, MFF_ETH_DST },
5760 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5761 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5762 { OFPFMF11_METADATA, MFF_METADATA },
5766 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5768 const struct ofp11_wc_map *p;
5771 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5772 if (bitmap_is_set(fields->bm, p->mf)) {
5779 static struct mf_bitmap
5780 mf_bitmap_from_of11(ovs_be32 wc11_)
5782 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5783 const struct ofp11_wc_map *p;
5784 uint32_t wc11 = ntohl(wc11_);
5786 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5787 if (wc11 & p->wc11) {
5788 bitmap_set1(fields.bm, p->mf);
5795 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5796 const struct ofputil_table_features *features,
5799 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5800 struct ofp11_table_stats *out;
5802 out = ofpbuf_put_zeros(buf, sizeof *out);
5803 out->table_id = features->table_id;
5804 ovs_strlcpy(out->name, features->name, sizeof out->name);
5805 out->wildcards = mf_bitmap_to_of11(&wc);
5806 out->match = mf_bitmap_to_of11(&features->match);
5807 out->instructions = ovsinst_bitmap_to_openflow(
5808 features->nonmiss.instructions, OFP11_VERSION);
5809 out->write_actions = ofpact_bitmap_to_openflow(
5810 features->nonmiss.write.ofpacts, OFP11_VERSION);
5811 out->apply_actions = ofpact_bitmap_to_openflow(
5812 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5813 out->config = htonl(features->miss_config);
5814 out->max_entries = htonl(features->max_entries);
5815 out->active_count = htonl(stats->active_count);
5816 out->lookup_count = htonll(stats->lookup_count);
5817 out->matched_count = htonll(stats->matched_count);
5821 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5822 const struct ofputil_table_features *features,
5825 struct ofp12_table_stats *out;
5827 out = ofpbuf_put_zeros(buf, sizeof *out);
5828 out->table_id = features->table_id;
5829 ovs_strlcpy(out->name, features->name, sizeof out->name);
5830 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5831 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5833 out->write_actions = ofpact_bitmap_to_openflow(
5834 features->nonmiss.write.ofpacts, OFP12_VERSION);
5835 out->apply_actions = ofpact_bitmap_to_openflow(
5836 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5837 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5838 &features->nonmiss.write.set_fields, OFP12_VERSION);
5839 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5840 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5841 out->metadata_match = features->metadata_match;
5842 out->metadata_write = features->metadata_write;
5843 out->instructions = ovsinst_bitmap_to_openflow(
5844 features->nonmiss.instructions, OFP12_VERSION);
5845 out->config = ofputil_encode_table_config(features->miss_config,
5846 OFPUTIL_TABLE_EVICTION_DEFAULT,
5847 OFPUTIL_TABLE_VACANCY_DEFAULT,
5849 out->max_entries = htonl(features->max_entries);
5850 out->active_count = htonl(stats->active_count);
5851 out->lookup_count = htonll(stats->lookup_count);
5852 out->matched_count = htonll(stats->matched_count);
5856 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5859 struct ofp13_table_stats *out;
5861 out = ofpbuf_put_zeros(buf, sizeof *out);
5862 out->table_id = stats->table_id;
5863 out->active_count = htonl(stats->active_count);
5864 out->lookup_count = htonll(stats->lookup_count);
5865 out->matched_count = htonll(stats->matched_count);
5869 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5871 return ofpraw_alloc_stats_reply(request, 0);
5875 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5876 const struct ofputil_table_stats *stats,
5877 const struct ofputil_table_features *features)
5879 struct ofp_header *oh = reply->header;
5881 ovs_assert(stats->table_id == features->table_id);
5883 switch ((enum ofp_version) oh->version) {
5885 ofputil_put_ofp10_table_stats(stats, features, reply);
5889 ofputil_put_ofp11_table_stats(stats, features, reply);
5893 ofputil_put_ofp12_table_stats(stats, features, reply);
5899 ofputil_put_ofp13_table_stats(stats, reply);
5908 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5909 struct ofputil_table_stats *stats,
5910 struct ofputil_table_features *features)
5912 struct ofp10_table_stats *ots;
5914 ots = ofpbuf_try_pull(msg, sizeof *ots);
5916 return OFPERR_OFPBRC_BAD_LEN;
5919 features->table_id = ots->table_id;
5920 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5921 features->max_entries = ntohl(ots->max_entries);
5922 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5924 stats->table_id = ots->table_id;
5925 stats->active_count = ntohl(ots->active_count);
5926 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5927 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5933 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5934 struct ofputil_table_stats *stats,
5935 struct ofputil_table_features *features)
5937 struct ofp11_table_stats *ots;
5939 ots = ofpbuf_try_pull(msg, sizeof *ots);
5941 return OFPERR_OFPBRC_BAD_LEN;
5944 features->table_id = ots->table_id;
5945 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5946 features->max_entries = ntohl(ots->max_entries);
5947 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5948 ots->instructions, OFP11_VERSION);
5949 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5950 ots->write_actions, OFP11_VERSION);
5951 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5952 ots->write_actions, OFP11_VERSION);
5953 features->miss = features->nonmiss;
5954 features->miss_config = ofputil_decode_table_miss(ots->config,
5956 features->match = mf_bitmap_from_of11(ots->match);
5957 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5958 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5960 stats->table_id = ots->table_id;
5961 stats->active_count = ntohl(ots->active_count);
5962 stats->lookup_count = ntohll(ots->lookup_count);
5963 stats->matched_count = ntohll(ots->matched_count);
5969 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5970 struct ofputil_table_stats *stats,
5971 struct ofputil_table_features *features)
5973 struct ofp12_table_stats *ots;
5975 ots = ofpbuf_try_pull(msg, sizeof *ots);
5977 return OFPERR_OFPBRC_BAD_LEN;
5980 features->table_id = ots->table_id;
5981 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5982 features->metadata_match = ots->metadata_match;
5983 features->metadata_write = ots->metadata_write;
5984 features->miss_config = ofputil_decode_table_miss(ots->config,
5986 features->max_entries = ntohl(ots->max_entries);
5988 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5989 ots->instructions, OFP12_VERSION);
5990 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5991 ots->write_actions, OFP12_VERSION);
5992 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5993 ots->apply_actions, OFP12_VERSION);
5994 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
5995 ots->write_setfields, OFP12_VERSION);
5996 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
5997 ots->apply_setfields, OFP12_VERSION);
5998 features->miss = features->nonmiss;
6000 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
6001 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
6003 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
6005 stats->table_id = ots->table_id;
6006 stats->active_count = ntohl(ots->active_count);
6007 stats->lookup_count = ntohll(ots->lookup_count);
6008 stats->matched_count = ntohll(ots->matched_count);
6014 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
6015 struct ofputil_table_stats *stats,
6016 struct ofputil_table_features *features)
6018 struct ofp13_table_stats *ots;
6020 ots = ofpbuf_try_pull(msg, sizeof *ots);
6022 return OFPERR_OFPBRC_BAD_LEN;
6025 features->table_id = ots->table_id;
6027 stats->table_id = ots->table_id;
6028 stats->active_count = ntohl(ots->active_count);
6029 stats->lookup_count = ntohll(ots->lookup_count);
6030 stats->matched_count = ntohll(ots->matched_count);
6036 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
6037 struct ofputil_table_stats *stats,
6038 struct ofputil_table_features *features)
6040 const struct ofp_header *oh;
6043 ofpraw_pull_assert(msg);
6051 memset(stats, 0, sizeof *stats);
6052 memset(features, 0, sizeof *features);
6053 features->supports_eviction = -1;
6054 features->supports_vacancy_events = -1;
6056 switch ((enum ofp_version) oh->version) {
6058 return ofputil_decode_ofp10_table_stats(msg, stats, features);
6061 return ofputil_decode_ofp11_table_stats(msg, stats, features);
6064 return ofputil_decode_ofp12_table_stats(msg, stats, features);
6069 return ofputil_decode_ofp13_table_stats(msg, stats, features);
6076 /* ofputil_flow_monitor_request */
6078 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
6079 * ofputil_flow_monitor_request in 'rq'.
6081 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6082 * message. Calling this function multiple times for a single 'msg' iterates
6083 * through the requests. The caller must initially leave 'msg''s layer
6084 * pointers null and not modify them between calls.
6086 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6087 * otherwise an OFPERR_* value. */
6089 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6092 struct nx_flow_monitor_request *nfmr;
6096 ofpraw_pull_assert(msg);
6103 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6105 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6106 "leftover bytes at end", msg->size);
6107 return OFPERR_OFPBRC_BAD_LEN;
6110 flags = ntohs(nfmr->flags);
6111 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6112 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6113 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6114 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6116 return OFPERR_OFPMOFC_BAD_FLAGS;
6119 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6120 return OFPERR_NXBRC_MUST_BE_ZERO;
6123 rq->id = ntohl(nfmr->id);
6125 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6126 rq->table_id = nfmr->table_id;
6128 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6132 ofputil_append_flow_monitor_request(
6133 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6135 struct nx_flow_monitor_request *nfmr;
6140 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6143 start_ofs = msg->size;
6144 ofpbuf_put_zeros(msg, sizeof *nfmr);
6145 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6147 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6148 nfmr->id = htonl(rq->id);
6149 nfmr->flags = htons(rq->flags);
6150 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6151 nfmr->match_len = htons(match_len);
6152 nfmr->table_id = rq->table_id;
6155 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6156 * into an abstract ofputil_flow_update in 'update'. The caller must have
6157 * initialized update->match to point to space allocated for a match.
6159 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6160 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6161 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6162 * will point into the 'ofpacts' buffer.
6164 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6165 * this function multiple times for a single 'msg' iterates through the
6166 * updates. The caller must initially leave 'msg''s layer pointers null and
6167 * not modify them between calls.
6169 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6170 * otherwise an OFPERR_* value. */
6172 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6173 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6175 struct nx_flow_update_header *nfuh;
6176 unsigned int length;
6177 struct ofp_header *oh;
6180 ofpraw_pull_assert(msg);
6187 if (msg->size < sizeof(struct nx_flow_update_header)) {
6194 update->event = ntohs(nfuh->event);
6195 length = ntohs(nfuh->length);
6196 if (length > msg->size || length % 8) {
6200 if (update->event == NXFME_ABBREV) {
6201 struct nx_flow_update_abbrev *nfua;
6203 if (length != sizeof *nfua) {
6207 nfua = ofpbuf_pull(msg, sizeof *nfua);
6208 update->xid = nfua->xid;
6210 } else if (update->event == NXFME_ADDED
6211 || update->event == NXFME_DELETED
6212 || update->event == NXFME_MODIFIED) {
6213 struct nx_flow_update_full *nfuf;
6214 unsigned int actions_len;
6215 unsigned int match_len;
6218 if (length < sizeof *nfuf) {
6222 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6223 match_len = ntohs(nfuf->match_len);
6224 if (sizeof *nfuf + match_len > length) {
6228 update->reason = ntohs(nfuf->reason);
6229 update->idle_timeout = ntohs(nfuf->idle_timeout);
6230 update->hard_timeout = ntohs(nfuf->hard_timeout);
6231 update->table_id = nfuf->table_id;
6232 update->cookie = nfuf->cookie;
6233 update->priority = ntohs(nfuf->priority);
6235 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6240 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6241 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6247 update->ofpacts = ofpacts->data;
6248 update->ofpacts_len = ofpacts->size;
6251 VLOG_WARN_RL(&bad_ofmsg_rl,
6252 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6253 ntohs(nfuh->event));
6254 return OFPERR_NXBRC_FM_BAD_EVENT;
6258 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6259 "leftover bytes at end", msg->size);
6260 return OFPERR_OFPBRC_BAD_LEN;
6264 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6266 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6268 return ntohl(cancel->id);
6272 ofputil_encode_flow_monitor_cancel(uint32_t id)
6274 struct nx_flow_monitor_cancel *nfmc;
6277 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6278 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6279 nfmc->id = htonl(id);
6284 ofputil_start_flow_update(struct ovs_list *replies)
6288 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6292 list_push_back(replies, &msg->list_node);
6296 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6297 struct ovs_list *replies)
6299 enum ofp_version version = ofpmp_version(replies);
6300 struct nx_flow_update_header *nfuh;
6304 msg = ofpbuf_from_list(list_back(replies));
6305 start_ofs = msg->size;
6307 if (update->event == NXFME_ABBREV) {
6308 struct nx_flow_update_abbrev *nfua;
6310 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6311 nfua->xid = update->xid;
6313 struct nx_flow_update_full *nfuf;
6316 ofpbuf_put_zeros(msg, sizeof *nfuf);
6317 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6318 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6320 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6321 nfuf->reason = htons(update->reason);
6322 nfuf->priority = htons(update->priority);
6323 nfuf->idle_timeout = htons(update->idle_timeout);
6324 nfuf->hard_timeout = htons(update->hard_timeout);
6325 nfuf->match_len = htons(match_len);
6326 nfuf->table_id = update->table_id;
6327 nfuf->cookie = update->cookie;
6330 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6331 nfuh->length = htons(msg->size - start_ofs);
6332 nfuh->event = htons(update->event);
6334 ofpmp_postappend(replies, start_ofs);
6338 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6339 enum ofputil_protocol protocol)
6341 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6345 size = po->ofpacts_len;
6346 if (po->buffer_id == UINT32_MAX) {
6347 size += po->packet_len;
6350 switch (ofp_version) {
6351 case OFP10_VERSION: {
6352 struct ofp10_packet_out *opo;
6355 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6356 ofpbuf_put_zeros(msg, sizeof *opo);
6357 actions_ofs = msg->size;
6358 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6362 opo->buffer_id = htonl(po->buffer_id);
6363 opo->in_port = htons(ofp_to_u16(po->in_port));
6364 opo->actions_len = htons(msg->size - actions_ofs);
6372 case OFP15_VERSION: {
6373 struct ofp11_packet_out *opo;
6376 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6377 ofpbuf_put_zeros(msg, sizeof *opo);
6378 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6381 opo->buffer_id = htonl(po->buffer_id);
6382 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6383 opo->actions_len = htons(len);
6391 if (po->buffer_id == UINT32_MAX) {
6392 ofpbuf_put(msg, po->packet, po->packet_len);
6395 ofpmsg_update_length(msg);
6400 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6402 make_echo_request(enum ofp_version ofp_version)
6404 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6408 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6409 * OFPT_ECHO_REQUEST message in 'rq'. */
6411 make_echo_reply(const struct ofp_header *rq)
6413 struct ofpbuf rq_buf;
6414 struct ofpbuf *reply;
6416 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6417 ofpraw_pull_assert(&rq_buf);
6419 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
6420 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6425 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6429 switch (ofp_version) {
6435 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6439 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6446 return ofpraw_alloc(type, ofp_version, 0);
6450 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
6452 switch (flags & OFPC_FRAG_MASK) {
6453 case OFPC_FRAG_NORMAL: return "normal";
6454 case OFPC_FRAG_DROP: return "drop";
6455 case OFPC_FRAG_REASM: return "reassemble";
6456 case OFPC_FRAG_NX_MATCH: return "nx-match";
6463 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
6465 if (!strcasecmp(s, "normal")) {
6466 *flags = OFPC_FRAG_NORMAL;
6467 } else if (!strcasecmp(s, "drop")) {
6468 *flags = OFPC_FRAG_DROP;
6469 } else if (!strcasecmp(s, "reassemble")) {
6470 *flags = OFPC_FRAG_REASM;
6471 } else if (!strcasecmp(s, "nx-match")) {
6472 *flags = OFPC_FRAG_NX_MATCH;
6479 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6480 * port number and stores the latter in '*ofp10_port', for the purpose of
6481 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6482 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6484 * See the definition of OFP11_MAX for an explanation of the mapping. */
6486 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6488 uint32_t ofp11_port_h = ntohl(ofp11_port);
6490 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6491 *ofp10_port = u16_to_ofp(ofp11_port_h);
6493 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6494 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6497 *ofp10_port = OFPP_NONE;
6498 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6499 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6500 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6501 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6502 return OFPERR_OFPBAC_BAD_OUT_PORT;
6506 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6507 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6509 * See the definition of OFP11_MAX for an explanation of the mapping. */
6511 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6513 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6514 ? ofp_to_u16(ofp10_port)
6515 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6518 #define OFPUTIL_NAMED_PORTS \
6519 OFPUTIL_NAMED_PORT(IN_PORT) \
6520 OFPUTIL_NAMED_PORT(TABLE) \
6521 OFPUTIL_NAMED_PORT(NORMAL) \
6522 OFPUTIL_NAMED_PORT(FLOOD) \
6523 OFPUTIL_NAMED_PORT(ALL) \
6524 OFPUTIL_NAMED_PORT(CONTROLLER) \
6525 OFPUTIL_NAMED_PORT(LOCAL) \
6526 OFPUTIL_NAMED_PORT(ANY) \
6527 OFPUTIL_NAMED_PORT(UNSET)
6529 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6530 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6531 OFPUTIL_NAMED_PORTS \
6532 OFPUTIL_NAMED_PORT(NONE)
6534 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6535 * integer or, for reserved ports, the standard OpenFlow name for the port
6538 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6539 * or name. The caller should issue an error message in this case, because
6540 * this function usually does not. (This gives the caller an opportunity to
6541 * look up the port name another way, e.g. by contacting the switch and listing
6542 * the names of all its ports).
6544 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6545 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6546 * range as described in include/openflow/openflow-1.1.h. */
6548 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6550 unsigned int port32; /* int is at least 32 bits wide. */
6553 VLOG_WARN("Negative value %s is not a valid port number.", s);
6557 if (str_to_uint(s, 10, &port32)) {
6558 if (port32 < ofp_to_u16(OFPP_MAX)) {
6560 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6561 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6562 "be translated to %u when talking to an OF1.1 or "
6563 "later controller", port32, port32 + OFPP11_OFFSET);
6564 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6565 char name[OFP_MAX_PORT_NAME_LEN];
6567 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6568 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6569 "for compatibility with OpenFlow 1.1 and later",
6571 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6572 VLOG_WARN("port %u is outside the supported range 0 through "
6573 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6574 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6577 port32 -= OFPP11_OFFSET;
6580 *portp = u16_to_ofp(port32);
6587 static const struct pair pairs[] = {
6588 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6589 OFPUTIL_NAMED_PORTS_WITH_NONE
6590 #undef OFPUTIL_NAMED_PORT
6592 const struct pair *p;
6594 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6595 if (!strcasecmp(s, p->name)) {
6604 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6605 * Most ports' string representation is just the port number, but for special
6606 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6608 ofputil_format_port(ofp_port_t port, struct ds *s)
6610 char name[OFP_MAX_PORT_NAME_LEN];
6612 ofputil_port_to_string(port, name, sizeof name);
6613 ds_put_cstr(s, name);
6616 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6617 * representation of OpenFlow port number 'port'. Most ports are represented
6618 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6619 * by name, e.g. "LOCAL". */
6621 ofputil_port_to_string(ofp_port_t port,
6622 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6625 #define OFPUTIL_NAMED_PORT(NAME) \
6627 ovs_strlcpy(namebuf, #NAME, bufsize); \
6630 #undef OFPUTIL_NAMED_PORT
6633 snprintf(namebuf, bufsize, "%"PRIu16, port);
6638 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6639 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6640 * (either "ANY" or "ALL").
6642 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6645 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6647 if (!strcasecmp(s, "any")) {
6648 *group_idp = OFPG_ANY;
6649 } else if (!strcasecmp(s, "all")) {
6650 *group_idp = OFPG_ALL;
6651 } else if (!str_to_uint(s, 10, group_idp)) {
6652 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6653 "32-bit nonnegative integers or the keywords ANY or "
6661 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6662 * Most groups' string representation is just the number, but for special
6663 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6665 ofputil_format_group(uint32_t group_id, struct ds *s)
6667 char name[MAX_GROUP_NAME_LEN];
6669 ofputil_group_to_string(group_id, name, sizeof name);
6670 ds_put_cstr(s, name);
6674 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6675 * representation of OpenFlow group ID 'group_id'. Most group are represented
6676 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6677 * by name, e.g. "ALL". */
6679 ofputil_group_to_string(uint32_t group_id,
6680 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6684 ovs_strlcpy(namebuf, "ALL", bufsize);
6688 ovs_strlcpy(namebuf, "ANY", bufsize);
6692 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6697 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6698 * 'ofp_version', tries to pull the first element from the array. If
6699 * successful, initializes '*pp' with an abstract representation of the
6700 * port and returns 0. If no ports remain to be decoded, returns EOF.
6701 * On an error, returns a positive OFPERR_* value. */
6703 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6704 struct ofputil_phy_port *pp)
6706 memset(pp, 0, sizeof *pp);
6708 switch (ofp_version) {
6709 case OFP10_VERSION: {
6710 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6711 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6715 case OFP13_VERSION: {
6716 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6717 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6721 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6728 ofputil_normalize_match__(struct match *match, bool may_log)
6731 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6732 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6733 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6734 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6735 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6736 MAY_ARP_THA = 1 << 5, /* arp_tha */
6737 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6738 MAY_ND_TARGET = 1 << 7, /* nd_target */
6739 MAY_MPLS = 1 << 8, /* mpls label and tc */
6742 struct flow_wildcards wc;
6744 /* Figure out what fields may be matched. */
6745 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6746 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6747 if (match->flow.nw_proto == IPPROTO_TCP ||
6748 match->flow.nw_proto == IPPROTO_UDP ||
6749 match->flow.nw_proto == IPPROTO_SCTP ||
6750 match->flow.nw_proto == IPPROTO_ICMP) {
6751 may_match |= MAY_TP_ADDR;
6753 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6754 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6755 if (match->flow.nw_proto == IPPROTO_TCP ||
6756 match->flow.nw_proto == IPPROTO_UDP ||
6757 match->flow.nw_proto == IPPROTO_SCTP) {
6758 may_match |= MAY_TP_ADDR;
6759 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6760 may_match |= MAY_TP_ADDR;
6761 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6762 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6763 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6764 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6767 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6768 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6769 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6770 } else if (eth_type_mpls(match->flow.dl_type)) {
6771 may_match = MAY_MPLS;
6776 /* Clear the fields that may not be matched. */
6778 if (!(may_match & MAY_NW_ADDR)) {
6779 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6781 if (!(may_match & MAY_TP_ADDR)) {
6782 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6784 if (!(may_match & MAY_NW_PROTO)) {
6785 wc.masks.nw_proto = 0;
6787 if (!(may_match & MAY_IPVx)) {
6788 wc.masks.nw_tos = 0;
6789 wc.masks.nw_ttl = 0;
6791 if (!(may_match & MAY_ARP_SHA)) {
6792 WC_UNMASK_FIELD(&wc, arp_sha);
6794 if (!(may_match & MAY_ARP_THA)) {
6795 WC_UNMASK_FIELD(&wc, arp_tha);
6797 if (!(may_match & MAY_IPV6)) {
6798 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6799 wc.masks.ipv6_label = htonl(0);
6801 if (!(may_match & MAY_ND_TARGET)) {
6802 wc.masks.nd_target = in6addr_any;
6804 if (!(may_match & MAY_MPLS)) {
6805 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6808 /* Log any changes. */
6809 if (!flow_wildcards_equal(&wc, &match->wc)) {
6810 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6811 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6814 match_zero_wildcarded_fields(match);
6817 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6818 VLOG_INFO("normalization changed ofp_match, details:");
6819 VLOG_INFO(" pre: %s", pre);
6820 VLOG_INFO("post: %s", post);
6827 /* "Normalizes" the wildcards in 'match'. That means:
6829 * 1. If the type of level N is known, then only the valid fields for that
6830 * level may be specified. For example, ARP does not have a TOS field,
6831 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6832 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6833 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6836 * 2. If the type of level N is not known (or not understood by Open
6837 * vSwitch), then no fields at all for that level may be specified. For
6838 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6839 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6842 * If this function changes 'match', it logs a rate-limited informational
6845 ofputil_normalize_match(struct match *match)
6847 ofputil_normalize_match__(match, true);
6850 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6851 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6852 * sense for use on flows received from elsewhere (so that a bug in the program
6853 * that sent them can be reported and corrected). */
6855 ofputil_normalize_match_quiet(struct match *match)
6857 ofputil_normalize_match__(match, false);
6860 /* Parses a key or a key-value pair from '*stringp'.
6862 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6863 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6864 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6865 * are substrings of '*stringp' created by replacing some of its bytes by null
6866 * terminators. Returns true.
6868 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6869 * NULL and returns false. */
6871 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6873 char *pos, *key, *value;
6877 pos += strspn(pos, ", \t\r\n");
6879 *keyp = *valuep = NULL;
6884 key_len = strcspn(pos, ":=(, \t\r\n");
6885 if (key[key_len] == ':' || key[key_len] == '=') {
6886 /* The value can be separated by a colon. */
6889 value = key + key_len + 1;
6890 value_len = strcspn(value, ", \t\r\n");
6891 pos = value + value_len + (value[value_len] != '\0');
6892 value[value_len] = '\0';
6893 } else if (key[key_len] == '(') {
6894 /* The value can be surrounded by balanced parentheses. The outermost
6895 * set of parentheses is removed. */
6899 value = key + key_len + 1;
6900 for (value_len = 0; level > 0; value_len++) {
6901 switch (value[value_len]) {
6915 value[value_len - 1] = '\0';
6916 pos = value + value_len;
6918 /* There might be no value at all. */
6919 value = key + key_len; /* Will become the empty string below. */
6920 pos = key + key_len + (key[key_len] != '\0');
6922 key[key_len] = '\0';
6930 /* Encode a dump ports request for 'port', the encoded message
6931 * will be for OpenFlow version 'ofp_version'. Returns message
6932 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6934 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6936 struct ofpbuf *request;
6938 switch (ofp_version) {
6939 case OFP10_VERSION: {
6940 struct ofp10_port_stats_request *req;
6941 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6942 req = ofpbuf_put_zeros(request, sizeof *req);
6943 req->port_no = htons(ofp_to_u16(port));
6950 case OFP15_VERSION: {
6951 struct ofp11_port_stats_request *req;
6952 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6953 req = ofpbuf_put_zeros(request, sizeof *req);
6954 req->port_no = ofputil_port_to_ofp11(port);
6965 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6966 struct ofp10_port_stats *ps10)
6968 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6969 memset(ps10->pad, 0, sizeof ps10->pad);
6970 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6971 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6972 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6973 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6974 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6975 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6976 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6977 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6978 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6979 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6980 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6981 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6985 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6986 struct ofp11_port_stats *ps11)
6988 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6989 memset(ps11->pad, 0, sizeof ps11->pad);
6990 ps11->rx_packets = htonll(ops->stats.rx_packets);
6991 ps11->tx_packets = htonll(ops->stats.tx_packets);
6992 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6993 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6994 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6995 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6996 ps11->rx_errors = htonll(ops->stats.rx_errors);
6997 ps11->tx_errors = htonll(ops->stats.tx_errors);
6998 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6999 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
7000 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7001 ps11->collisions = htonll(ops->stats.collisions);
7005 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
7006 struct ofp13_port_stats *ps13)
7008 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
7009 ps13->duration_sec = htonl(ops->duration_sec);
7010 ps13->duration_nsec = htonl(ops->duration_nsec);
7014 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
7015 struct ovs_list *replies)
7017 struct ofp14_port_stats_prop_ethernet *eth;
7018 struct ofp14_port_stats *ps14;
7019 struct ofpbuf *reply;
7021 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
7023 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
7024 ps14->length = htons(sizeof *ps14 + sizeof *eth);
7025 memset(ps14->pad, 0, sizeof ps14->pad);
7026 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
7027 ps14->duration_sec = htonl(ops->duration_sec);
7028 ps14->duration_nsec = htonl(ops->duration_nsec);
7029 ps14->rx_packets = htonll(ops->stats.rx_packets);
7030 ps14->tx_packets = htonll(ops->stats.tx_packets);
7031 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
7032 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
7033 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
7034 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
7035 ps14->rx_errors = htonll(ops->stats.rx_errors);
7036 ps14->tx_errors = htonll(ops->stats.tx_errors);
7038 eth = ofpbuf_put_uninit(reply, sizeof *eth);
7039 eth->type = htons(OFPPSPT14_ETHERNET);
7040 eth->length = htons(sizeof *eth);
7041 memset(eth->pad, 0, sizeof eth->pad);
7042 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7043 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
7044 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7045 eth->collisions = htonll(ops->stats.collisions);
7048 /* Encode a ports stat for 'ops' and append it to 'replies'. */
7050 ofputil_append_port_stat(struct ovs_list *replies,
7051 const struct ofputil_port_stats *ops)
7053 switch (ofpmp_version(replies)) {
7054 case OFP13_VERSION: {
7055 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7056 ofputil_port_stats_to_ofp13(ops, reply);
7060 case OFP11_VERSION: {
7061 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7062 ofputil_port_stats_to_ofp11(ops, reply);
7066 case OFP10_VERSION: {
7067 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7068 ofputil_port_stats_to_ofp10(ops, reply);
7074 ofputil_append_ofp14_port_stats(ops, replies);
7083 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7084 const struct ofp10_port_stats *ps10)
7086 memset(ops, 0, sizeof *ops);
7088 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7089 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7090 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7091 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7092 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7093 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7094 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7095 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7096 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7097 ops->stats.rx_frame_errors =
7098 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7099 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7100 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7101 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7102 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7108 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7109 const struct ofp11_port_stats *ps11)
7113 memset(ops, 0, sizeof *ops);
7114 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7119 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7120 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7121 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7122 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7123 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7124 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7125 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7126 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7127 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7128 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7129 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7130 ops->stats.collisions = ntohll(ps11->collisions);
7131 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7137 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7138 const struct ofp13_port_stats *ps13)
7140 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7142 ops->duration_sec = ntohl(ps13->duration_sec);
7143 ops->duration_nsec = ntohl(ps13->duration_nsec);
7149 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7150 struct ofputil_port_stats *ops)
7152 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7154 if (payload->size != sizeof *eth) {
7155 return OFPERR_OFPBPC_BAD_LEN;
7158 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7159 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7160 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7161 ops->stats.collisions = ntohll(eth->collisions);
7167 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7170 const struct ofp14_port_stats *ps14;
7171 struct ofpbuf properties;
7175 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7177 return OFPERR_OFPBRC_BAD_LEN;
7180 len = ntohs(ps14->length);
7181 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7182 return OFPERR_OFPBRC_BAD_LEN;
7184 len -= sizeof *ps14;
7185 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
7187 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7192 ops->duration_sec = ntohl(ps14->duration_sec);
7193 ops->duration_nsec = ntohl(ps14->duration_nsec);
7194 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7195 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7196 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7197 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7198 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7199 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7200 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7201 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7202 ops->stats.rx_frame_errors = UINT64_MAX;
7203 ops->stats.rx_over_errors = UINT64_MAX;
7204 ops->stats.rx_crc_errors = UINT64_MAX;
7205 ops->stats.collisions = UINT64_MAX;
7207 while (properties.size > 0) {
7208 struct ofpbuf payload;
7212 error = ofputil_pull_property(&properties, &payload, &type);
7218 case OFPPSPT14_ETHERNET:
7219 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7223 log_property(true, "unknown port stats property %"PRIu16, type);
7236 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7239 ofputil_count_port_stats(const struct ofp_header *oh)
7241 struct ofputil_port_stats ps;
7245 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7246 ofpraw_pull_assert(&b);
7247 while (!ofputil_decode_port_stats(&ps, &b)) {
7253 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7254 * ofputil_port_stats in 'ps'.
7256 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7257 * message. Calling this function multiple times for a single 'msg' iterates
7258 * through the replies. The caller must initially leave 'msg''s layer pointers
7259 * null and not modify them between calls.
7261 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7262 * otherwise a positive errno value. */
7264 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7269 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7270 : ofpraw_pull(&raw, msg));
7277 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7278 return ofputil_pull_ofp14_port_stats(ps, msg);
7279 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7280 const struct ofp13_port_stats *ps13;
7282 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7286 return ofputil_port_stats_from_ofp13(ps, ps13);
7287 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7288 const struct ofp11_port_stats *ps11;
7290 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7294 return ofputil_port_stats_from_ofp11(ps, ps11);
7295 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7296 const struct ofp10_port_stats *ps10;
7298 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7302 return ofputil_port_stats_from_ofp10(ps, ps10);
7308 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7309 "bytes at end", msg->size);
7310 return OFPERR_OFPBRC_BAD_LEN;
7313 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7314 * port number and stores the latter in '*ofp10_port'.
7315 * Returns 0 if successful, otherwise an OFPERR_* number. */
7317 ofputil_decode_port_stats_request(const struct ofp_header *request,
7318 ofp_port_t *ofp10_port)
7320 switch ((enum ofp_version)request->version) {
7325 case OFP11_VERSION: {
7326 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7327 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7330 case OFP10_VERSION: {
7331 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7332 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7341 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7343 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7345 struct ofputil_bucket *bucket;
7347 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7348 free(bucket->ofpacts);
7353 /* Clones 'bucket' and its ofpacts data */
7354 static struct ofputil_bucket *
7355 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7357 struct ofputil_bucket *new;
7359 new = xmemdup(bucket, sizeof *bucket);
7360 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7365 /* Clones each of the buckets in the list 'src' appending them
7366 * in turn to 'dest' which should be an initialised list.
7367 * An exception is that if the pointer value of a bucket in 'src'
7368 * matches 'skip' then it is not cloned or appended to 'dest'.
7369 * This allows all of 'src' or 'all of 'src' except 'skip' to
7370 * be cloned and appended to 'dest'. */
7372 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7373 const struct ofputil_bucket *skip)
7375 struct ofputil_bucket *bucket;
7377 LIST_FOR_EACH (bucket, list_node, src) {
7378 struct ofputil_bucket *new_bucket;
7380 if (bucket == skip) {
7384 new_bucket = ofputil_bucket_clone_data(bucket);
7385 list_push_back(dest, &new_bucket->list_node);
7389 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7390 * Returns the first bucket found or NULL if no buckets are found. */
7391 struct ofputil_bucket *
7392 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7394 struct ofputil_bucket *bucket;
7396 if (bucket_id > OFPG15_BUCKET_MAX) {
7400 LIST_FOR_EACH (bucket, list_node, buckets) {
7401 if (bucket->bucket_id == bucket_id) {
7409 /* Returns true if more than one bucket in the list 'buckets'
7410 * have the same bucket id. Returns false otherwise. */
7412 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7414 struct ofputil_bucket *i, *j;
7416 LIST_FOR_EACH (i, list_node, buckets) {
7417 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7421 if (i->bucket_id == j->bucket_id) {
7430 /* Returns the bucket at the front of the list 'buckets'.
7431 * Undefined if 'buckets is empty. */
7432 struct ofputil_bucket *
7433 ofputil_bucket_list_front(const struct ovs_list *buckets)
7435 static struct ofputil_bucket *bucket;
7437 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7442 /* Returns the bucket at the back of the list 'buckets'.
7443 * Undefined if 'buckets is empty. */
7444 struct ofputil_bucket *
7445 ofputil_bucket_list_back(const struct ovs_list *buckets)
7447 static struct ofputil_bucket *bucket;
7449 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7454 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7455 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7458 * Group statistics include packet and byte counts for each group. */
7460 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7463 struct ofpbuf *request;
7465 switch (ofp_version) {
7467 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7468 "(\'-O OpenFlow11\')");
7473 case OFP15_VERSION: {
7474 struct ofp11_group_stats_request *req;
7475 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7476 req = ofpbuf_put_zeros(request, sizeof *req);
7477 req->group_id = htonl(group_id);
7488 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7490 ofputil_bucket_list_destroy(&gd->buckets);
7491 free(&gd->props.fields);
7494 /* Decodes the OpenFlow group description request in 'oh', returning the group
7495 * whose description is requested, or OFPG_ALL if stats for all groups was
7498 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7500 struct ofpbuf request;
7503 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7504 raw = ofpraw_pull_assert(&request);
7505 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7507 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7508 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7509 return ntohl(*group_id);
7515 /* Returns an OpenFlow group description request for OpenFlow version
7516 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7517 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7520 * Group descriptions include the bucket and action configuration for each
7523 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7526 struct ofpbuf *request;
7528 switch (ofp_version) {
7530 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7531 "(\'-O OpenFlow11\')");
7536 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7539 case OFP15_VERSION:{
7540 struct ofp15_group_desc_request *req;
7541 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7543 req = ofpbuf_put_zeros(request, sizeof *req);
7544 req->group_id = htonl(group_id);
7555 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7556 struct ofp11_bucket_counter bucket_cnts[])
7560 for (i = 0; i < gs->n_buckets; i++) {
7561 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7562 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7567 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7568 struct ofp11_group_stats *gs11, size_t length,
7569 struct ofp11_bucket_counter bucket_cnts[])
7571 memset(gs11, 0, sizeof *gs11);
7572 gs11->length = htons(length);
7573 gs11->group_id = htonl(gs->group_id);
7574 gs11->ref_count = htonl(gs->ref_count);
7575 gs11->packet_count = htonll(gs->packet_count);
7576 gs11->byte_count = htonll(gs->byte_count);
7577 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7581 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7582 struct ofp13_group_stats *gs13, size_t length,
7583 struct ofp11_bucket_counter bucket_cnts[])
7585 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7586 gs13->duration_sec = htonl(gs->duration_sec);
7587 gs13->duration_nsec = htonl(gs->duration_nsec);
7591 /* Encodes 'gs' properly for the format of the list of group statistics
7592 * replies already begun in 'replies' and appends it to the list. 'replies'
7593 * must have originally been initialized with ofpmp_init(). */
7595 ofputil_append_group_stats(struct ovs_list *replies,
7596 const struct ofputil_group_stats *gs)
7598 size_t bucket_counter_size;
7599 struct ofp11_bucket_counter *bucket_counters;
7602 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7604 switch (ofpmp_version(replies)) {
7606 case OFP12_VERSION:{
7607 struct ofp11_group_stats *gs11;
7609 length = sizeof *gs11 + bucket_counter_size;
7610 gs11 = ofpmp_append(replies, length);
7611 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7612 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7618 case OFP15_VERSION: {
7619 struct ofp13_group_stats *gs13;
7621 length = sizeof *gs13 + bucket_counter_size;
7622 gs13 = ofpmp_append(replies, length);
7623 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7624 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7633 /* Returns an OpenFlow group features request for OpenFlow version
7636 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7638 struct ofpbuf *request = NULL;
7640 switch (ofp_version) {
7643 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7644 "(\'-O OpenFlow12\')");
7649 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7659 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7660 * group features request 'request'. */
7662 ofputil_encode_group_features_reply(
7663 const struct ofputil_group_features *features,
7664 const struct ofp_header *request)
7666 struct ofp12_group_features_stats *ogf;
7667 struct ofpbuf *reply;
7670 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7671 request->version, request->xid, 0);
7672 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7673 ogf->types = htonl(features->types);
7674 ogf->capabilities = htonl(features->capabilities);
7675 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7676 ogf->max_groups[i] = htonl(features->max_groups[i]);
7677 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7684 /* Decodes group features reply 'oh' into 'features'. */
7686 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7687 struct ofputil_group_features *features)
7689 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7692 features->types = ntohl(ogf->types);
7693 features->capabilities = ntohl(ogf->capabilities);
7694 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7695 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7696 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7697 ogf->actions[i], oh->version);
7701 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7702 * group ID and stores the latter in '*group_id'.
7703 * Returns 0 if successful, otherwise an OFPERR_* number. */
7705 ofputil_decode_group_stats_request(const struct ofp_header *request,
7708 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7709 *group_id = ntohl(gsr11->group_id);
7713 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7714 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7715 * caller to eventually free.
7717 * Multiple group stats replies can be packed into a single OpenFlow message.
7718 * Calling this function multiple times for a single 'msg' iterates through the
7719 * replies. The caller must initially leave 'msg''s layer pointers null and
7720 * not modify them between calls.
7722 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7723 * otherwise a positive errno value. */
7725 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7726 struct ofputil_group_stats *gs)
7728 struct ofp11_bucket_counter *obc;
7729 struct ofp11_group_stats *ogs11;
7736 gs->bucket_stats = NULL;
7737 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7738 : ofpraw_pull(&raw, msg));
7747 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7748 base_len = sizeof *ogs11;
7749 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7750 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7751 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7752 struct ofp13_group_stats *ogs13;
7754 base_len = sizeof *ogs13;
7755 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7758 gs->duration_sec = ntohl(ogs13->duration_sec);
7759 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7768 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7769 ofpraw_get_name(raw), msg->size);
7770 return OFPERR_OFPBRC_BAD_LEN;
7772 length = ntohs(ogs11->length);
7773 if (length < sizeof base_len) {
7774 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7775 ofpraw_get_name(raw), length);
7776 return OFPERR_OFPBRC_BAD_LEN;
7779 gs->group_id = ntohl(ogs11->group_id);
7780 gs->ref_count = ntohl(ogs11->ref_count);
7781 gs->packet_count = ntohll(ogs11->packet_count);
7782 gs->byte_count = ntohll(ogs11->byte_count);
7784 gs->n_buckets = (length - base_len) / sizeof *obc;
7785 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7787 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7788 ofpraw_get_name(raw), msg->size);
7789 return OFPERR_OFPBRC_BAD_LEN;
7792 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7793 for (i = 0; i < gs->n_buckets; i++) {
7794 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7795 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7802 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7803 struct ofpbuf *openflow, enum ofp_version ofp_version)
7805 struct ofp11_bucket *ob;
7808 start = openflow->size;
7809 ofpbuf_put_zeros(openflow, sizeof *ob);
7810 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7811 openflow, ofp_version);
7812 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7813 ob->len = htons(openflow->size - start);
7814 ob->weight = htons(bucket->weight);
7815 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7816 ob->watch_group = htonl(bucket->watch_group);
7820 ofputil_put_ofp15_group_bucket_prop_weight(ovs_be16 weight,
7821 struct ofpbuf *openflow)
7824 struct ofp15_group_bucket_prop_weight *prop;
7826 start_ofs = start_property(openflow, OFPGBPT15_WEIGHT);
7827 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7828 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7829 prop->weight = weight;
7830 end_property(openflow, start_ofs);
7834 ofputil_put_ofp15_group_bucket_prop_watch(ovs_be32 watch, uint16_t type,
7835 struct ofpbuf *openflow)
7838 struct ofp15_group_bucket_prop_watch *prop;
7840 start_ofs = start_property(openflow, type);
7841 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7842 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7843 prop->watch = watch;
7844 end_property(openflow, start_ofs);
7848 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7849 uint32_t bucket_id, enum ofp11_group_type group_type,
7850 struct ofpbuf *openflow, enum ofp_version ofp_version)
7852 struct ofp15_bucket *ob;
7853 size_t start, actions_start, actions_len;
7855 start = openflow->size;
7856 ofpbuf_put_zeros(openflow, sizeof *ob);
7858 actions_start = openflow->size;
7859 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7860 openflow, ofp_version);
7861 actions_len = openflow->size - actions_start;
7863 if (group_type == OFPGT11_SELECT) {
7864 ofputil_put_ofp15_group_bucket_prop_weight(htons(bucket->weight),
7867 if (bucket->watch_port != OFPP_ANY) {
7868 ovs_be32 port = ofputil_port_to_ofp11(bucket->watch_port);
7869 ofputil_put_ofp15_group_bucket_prop_watch(port,
7870 OFPGBPT15_WATCH_PORT,
7873 if (bucket->watch_group != OFPG_ANY) {
7874 ovs_be32 group = htonl(bucket->watch_group);
7875 ofputil_put_ofp15_group_bucket_prop_watch(group,
7876 OFPGBPT15_WATCH_GROUP,
7880 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7881 ob->len = htons(openflow->size - start);
7882 ob->action_array_len = htons(actions_len);
7883 ob->bucket_id = htonl(bucket_id);
7887 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7888 const struct ofputil_group_props *gp,
7889 struct ofpbuf *openflow)
7891 struct ntr_group_prop_selection_method *prop;
7894 start = openflow->size;
7895 ofpbuf_put_zeros(openflow, sizeof *prop);
7896 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7897 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7898 prop->type = htons(OFPGPT15_EXPERIMENTER);
7899 prop->experimenter = htonl(NTR_VENDOR_ID);
7900 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7901 strcpy(prop->selection_method, gp->selection_method);
7902 prop->selection_method_param = htonll(gp->selection_method_param);
7903 end_property(openflow, start);
7907 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7908 const struct ovs_list *buckets,
7909 struct ovs_list *replies,
7910 enum ofp_version version)
7912 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7913 struct ofp11_group_desc_stats *ogds;
7914 struct ofputil_bucket *bucket;
7917 start_ogds = reply->size;
7918 ofpbuf_put_zeros(reply, sizeof *ogds);
7919 LIST_FOR_EACH (bucket, list_node, buckets) {
7920 ofputil_put_ofp11_bucket(bucket, reply, version);
7922 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7923 ogds->length = htons(reply->size - start_ogds);
7924 ogds->type = gds->type;
7925 ogds->group_id = htonl(gds->group_id);
7927 ofpmp_postappend(replies, start_ogds);
7931 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
7932 const struct ovs_list *buckets,
7933 struct ovs_list *replies,
7934 enum ofp_version version)
7936 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7937 struct ofp15_group_desc_stats *ogds;
7938 struct ofputil_bucket *bucket;
7939 size_t start_ogds, start_buckets;
7941 start_ogds = reply->size;
7942 ofpbuf_put_zeros(reply, sizeof *ogds);
7943 start_buckets = reply->size;
7944 LIST_FOR_EACH (bucket, list_node, buckets) {
7945 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
7946 gds->type, reply, version);
7948 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7949 ogds->type = gds->type;
7950 ogds->group_id = htonl(gds->group_id);
7951 ogds->bucket_list_len = htons(reply->size - start_buckets);
7953 /* Add group properties */
7954 if (gds->props.selection_method[0]) {
7955 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
7958 ogds->length = htons(reply->size - start_ogds);
7960 ofpmp_postappend(replies, start_ogds);
7963 /* Appends a group stats reply that contains the data in 'gds' to those already
7964 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7965 * initialized with ofpmp_init(). */
7967 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7968 const struct ovs_list *buckets,
7969 struct ovs_list *replies)
7971 enum ofp_version version = ofpmp_version(replies);
7979 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
7983 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
7993 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
7994 enum ofp_version version, struct ovs_list *buckets)
7996 struct ofp11_bucket *ob;
7997 uint32_t bucket_id = 0;
8000 while (buckets_length > 0) {
8001 struct ofputil_bucket *bucket;
8002 struct ofpbuf ofpacts;
8006 ob = (buckets_length >= sizeof *ob
8007 ? ofpbuf_try_pull(msg, sizeof *ob)
8010 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
8012 return OFPERR_OFPGMFC_BAD_BUCKET;
8015 ob_len = ntohs(ob->len);
8016 if (ob_len < sizeof *ob) {
8017 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8018 "%"PRIuSIZE" is not valid", ob_len);
8019 return OFPERR_OFPGMFC_BAD_BUCKET;
8020 } else if (ob_len > buckets_length) {
8021 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8022 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
8023 ob_len, buckets_length);
8024 return OFPERR_OFPGMFC_BAD_BUCKET;
8026 buckets_length -= ob_len;
8028 ofpbuf_init(&ofpacts, 0);
8029 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
8032 ofpbuf_uninit(&ofpacts);
8033 ofputil_bucket_list_destroy(buckets);
8037 bucket = xzalloc(sizeof *bucket);
8038 bucket->weight = ntohs(ob->weight);
8039 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
8041 ofpbuf_uninit(&ofpacts);
8042 ofputil_bucket_list_destroy(buckets);
8043 return OFPERR_OFPGMFC_BAD_WATCH;
8045 bucket->watch_group = ntohl(ob->watch_group);
8046 bucket->bucket_id = bucket_id++;
8048 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8049 bucket->ofpacts_len = ofpacts.size;
8050 list_push_back(buckets, &bucket->list_node);
8057 parse_ofp15_group_bucket_prop_weight(const struct ofpbuf *payload,
8060 struct ofp15_group_bucket_prop_weight *prop = payload->data;
8062 if (payload->size != sizeof *prop) {
8063 log_property(false, "OpenFlow bucket weight property length "
8064 "%u is not valid", payload->size);
8065 return OFPERR_OFPBPC_BAD_LEN;
8068 *weight = prop->weight;
8074 parse_ofp15_group_bucket_prop_watch(const struct ofpbuf *payload,
8077 struct ofp15_group_bucket_prop_watch *prop = payload->data;
8079 if (payload->size != sizeof *prop) {
8080 log_property(false, "OpenFlow bucket watch port or group "
8081 "property length %u is not valid", payload->size);
8082 return OFPERR_OFPBPC_BAD_LEN;
8085 *watch = prop->watch;
8091 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
8092 enum ofp_version version, uint8_t group_type,
8093 struct ovs_list *buckets)
8095 struct ofp15_bucket *ob;
8098 while (buckets_length > 0) {
8099 struct ofputil_bucket *bucket = NULL;
8100 struct ofpbuf ofpacts;
8101 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
8102 struct ofpbuf properties;
8103 size_t ob_len, actions_len, properties_len;
8104 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
8105 ovs_be32 watch_group = htonl(OFPG_ANY);
8106 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
8108 ofpbuf_init(&ofpacts, 0);
8110 ob = ofpbuf_try_pull(msg, sizeof *ob);
8112 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
8113 " leftover bytes", buckets_length);
8117 ob_len = ntohs(ob->len);
8118 actions_len = ntohs(ob->action_array_len);
8120 if (ob_len < sizeof *ob) {
8121 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8122 "%"PRIuSIZE" is not valid", ob_len);
8124 } else if (ob_len > buckets_length) {
8125 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8126 "%"PRIuSIZE" exceeds remaining buckets data size %"
8127 PRIuSIZE, ob_len, buckets_length);
8129 } else if (actions_len > ob_len - sizeof *ob) {
8130 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
8131 "length %"PRIuSIZE" exceeds remaining bucket "
8132 "data size %"PRIuSIZE, actions_len,
8133 ob_len - sizeof *ob);
8136 buckets_length -= ob_len;
8138 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
8144 properties_len = ob_len - sizeof *ob - actions_len;
8145 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8148 while (properties.size > 0) {
8149 struct ofpbuf payload;
8152 err = ofputil_pull_property(&properties, &payload, &type);
8158 case OFPGBPT15_WEIGHT:
8159 err = parse_ofp15_group_bucket_prop_weight(&payload, &weight);
8162 case OFPGBPT15_WATCH_PORT:
8163 err = parse_ofp15_group_bucket_prop_watch(&payload,
8167 case OFPGBPT15_WATCH_GROUP:
8168 err = parse_ofp15_group_bucket_prop_watch(&payload,
8173 log_property(false, "unknown group bucket property %"PRIu16,
8175 err = OFPERR_OFPBPC_BAD_TYPE;
8184 bucket = xzalloc(sizeof *bucket);
8186 bucket->weight = ntohs(weight);
8187 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8189 err = OFPERR_OFPGMFC_BAD_WATCH;
8192 bucket->watch_group = ntohl(watch_group);
8193 bucket->bucket_id = ntohl(ob->bucket_id);
8194 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8195 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8197 err = OFPERR_OFPGMFC_BAD_BUCKET;
8201 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8202 bucket->ofpacts_len = ofpacts.size;
8203 list_push_back(buckets, &bucket->list_node);
8209 ofpbuf_uninit(&ofpacts);
8210 ofputil_bucket_list_destroy(buckets);
8214 if (ofputil_bucket_check_duplicate_id(buckets)) {
8215 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8216 ofputil_bucket_list_destroy(buckets);
8217 return OFPERR_OFPGMFC_BAD_BUCKET;
8224 ofputil_init_group_properties(struct ofputil_group_props *gp)
8226 memset(gp, 0, sizeof *gp);
8230 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8231 enum ofp11_group_type group_type,
8232 enum ofp15_group_mod_command group_cmd,
8233 struct ofputil_group_props *gp)
8235 struct ntr_group_prop_selection_method *prop = payload->data;
8236 size_t fields_len, method_len;
8239 switch (group_type) {
8240 case OFPGT11_SELECT:
8243 case OFPGT11_INDIRECT:
8245 log_property(false, "ntr selection method property is only allowed "
8246 "for select groups");
8247 return OFPERR_OFPBPC_BAD_VALUE;
8252 switch (group_cmd) {
8254 case OFPGC15_MODIFY:
8256 case OFPGC15_DELETE:
8257 case OFPGC15_INSERT_BUCKET:
8258 case OFPGC15_REMOVE_BUCKET:
8259 log_property(false, "ntr selection method property is only allowed "
8260 "for add and delete group modifications");
8261 return OFPERR_OFPBPC_BAD_VALUE;
8266 if (payload->size < sizeof *prop) {
8267 log_property(false, "ntr selection method property length "
8268 "%u is not valid", payload->size);
8269 return OFPERR_OFPBPC_BAD_LEN;
8272 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8274 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8275 log_property(false, "ntr selection method is not null terminated");
8276 return OFPERR_OFPBPC_BAD_VALUE;
8279 if (strcmp("hash", prop->selection_method)) {
8280 log_property(false, "ntr selection method '%s' is not supported",
8281 prop->selection_method);
8282 return OFPERR_OFPBPC_BAD_VALUE;
8285 strcpy(gp->selection_method, prop->selection_method);
8286 gp->selection_method_param = ntohll(prop->selection_method_param);
8288 if (!method_len && gp->selection_method_param) {
8289 log_property(false, "ntr selection method parameter is non-zero but "
8290 "selection method is empty");
8291 return OFPERR_OFPBPC_BAD_VALUE;
8294 ofpbuf_pull(payload, sizeof *prop);
8296 fields_len = ntohs(prop->length) - sizeof *prop;
8297 if (!method_len && fields_len) {
8298 log_property(false, "ntr selection method parameter is zero "
8299 "but fields are provided");
8300 return OFPERR_OFPBPC_BAD_VALUE;
8303 error = oxm_pull_field_array(payload->data, fields_len,
8306 log_property(false, "ntr selection method fields are invalid");
8314 parse_group_prop_ntr(struct ofpbuf *payload, uint32_t exp_type,
8315 enum ofp11_group_type group_type,
8316 enum ofp15_group_mod_command group_cmd,
8317 struct ofputil_group_props *gp)
8322 case NTRT_SELECTION_METHOD:
8323 error = parse_group_prop_ntr_selection_method(payload, group_type,
8328 log_property(false, "unknown group property ntr experimenter type "
8329 "%"PRIu32, exp_type);
8330 error = OFPERR_OFPBPC_BAD_TYPE;
8338 parse_ofp15_group_prop_exp(struct ofpbuf *payload,
8339 enum ofp11_group_type group_type,
8340 enum ofp15_group_mod_command group_cmd,
8341 struct ofputil_group_props *gp)
8343 struct ofp_prop_experimenter *prop = payload->data;
8344 uint16_t experimenter;
8348 if (payload->size < sizeof *prop) {
8349 return OFPERR_OFPBPC_BAD_LEN;
8352 experimenter = ntohl(prop->experimenter);
8353 exp_type = ntohl(prop->exp_type);
8355 switch (experimenter) {
8357 case NTR_COMPAT_VENDOR_ID:
8358 error = parse_group_prop_ntr(payload, exp_type, group_type,
8363 log_property(false, "unknown group property experimenter %"PRIu16,
8365 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
8373 parse_ofp15_group_properties(struct ofpbuf *msg,
8374 enum ofp11_group_type group_type,
8375 enum ofp15_group_mod_command group_cmd,
8376 struct ofputil_group_props *gp,
8377 size_t properties_len)
8379 struct ofpbuf properties;
8381 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8384 while (properties.size > 0) {
8385 struct ofpbuf payload;
8389 error = ofputil_pull_property(&properties, &payload, &type);
8395 case OFPGPT15_EXPERIMENTER:
8396 error = parse_ofp15_group_prop_exp(&payload, group_type,
8401 log_property(false, "unknown group property %"PRIu16, type);
8402 error = OFPERR_OFPBPC_BAD_TYPE;
8415 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8417 enum ofp_version version)
8419 struct ofp11_group_desc_stats *ogds;
8423 ofpraw_pull_assert(msg);
8430 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8432 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8433 "leftover bytes at end", msg->size);
8434 return OFPERR_OFPBRC_BAD_LEN;
8436 gd->type = ogds->type;
8437 gd->group_id = ntohl(ogds->group_id);
8439 length = ntohs(ogds->length);
8440 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8441 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8442 "length %"PRIuSIZE, length);
8443 return OFPERR_OFPBRC_BAD_LEN;
8446 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8451 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8453 enum ofp_version version)
8455 struct ofp15_group_desc_stats *ogds;
8456 uint16_t length, bucket_list_len;
8460 ofpraw_pull_assert(msg);
8467 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8469 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8470 "leftover bytes at end", msg->size);
8471 return OFPERR_OFPBRC_BAD_LEN;
8473 gd->type = ogds->type;
8474 gd->group_id = ntohl(ogds->group_id);
8476 length = ntohs(ogds->length);
8477 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8478 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8479 "length %u", length);
8480 return OFPERR_OFPBRC_BAD_LEN;
8483 bucket_list_len = ntohs(ogds->bucket_list_len);
8484 if (length < bucket_list_len + sizeof *ogds) {
8485 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8486 "bucket list length %u", bucket_list_len);
8487 return OFPERR_OFPBRC_BAD_LEN;
8489 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8495 /* By definition group desc messages don't have a group mod command.
8496 * However, parse_group_prop_ntr_selection_method() checks to make sure
8497 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8498 * against group mod messages with other commands supplying
8499 * a NTR selection method group experimenter property.
8500 * Such properties are valid for group desc replies so
8501 * claim that the group mod command is OFPGC15_ADD to
8502 * satisfy the check in parse_group_prop_ntr_selection_method() */
8503 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8504 length - sizeof *ogds - bucket_list_len);
8507 /* Converts a group description reply in 'msg' into an abstract
8508 * ofputil_group_desc in 'gd'.
8510 * Multiple group description replies can be packed into a single OpenFlow
8511 * message. Calling this function multiple times for a single 'msg' iterates
8512 * through the replies. The caller must initially leave 'msg''s layer pointers
8513 * null and not modify them between calls.
8515 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8516 * otherwise a positive errno value. */
8518 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8519 struct ofpbuf *msg, enum ofp_version version)
8521 ofputil_init_group_properties(&gd->props);
8529 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8532 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8541 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8543 ofputil_bucket_list_destroy(&gm->buckets);
8546 static struct ofpbuf *
8547 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8548 const struct ofputil_group_mod *gm)
8551 struct ofp11_group_mod *ogm;
8553 struct ofputil_bucket *bucket;
8555 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8556 start_ogm = b->size;
8557 ofpbuf_put_zeros(b, sizeof *ogm);
8559 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8560 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8562 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8563 ogm->command = htons(gm->command);
8564 ogm->type = gm->type;
8565 ogm->group_id = htonl(gm->group_id);
8570 static struct ofpbuf *
8571 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8572 const struct ofputil_group_mod *gm)
8575 struct ofp15_group_mod *ogm;
8577 struct ofputil_bucket *bucket;
8578 struct id_pool *bucket_ids = NULL;
8580 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8581 start_ogm = b->size;
8582 ofpbuf_put_zeros(b, sizeof *ogm);
8584 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8587 /* Generate a bucket id if none was supplied */
8588 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8590 const struct ofputil_bucket *bkt;
8592 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8594 /* Mark all bucket_ids that are present in gm
8595 * as used in the pool. */
8596 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8597 if (bkt == bucket) {
8600 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8601 id_pool_add(bucket_ids, bkt->bucket_id);
8606 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8610 bucket_id = bucket->bucket_id;
8613 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8615 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8616 ogm->command = htons(gm->command);
8617 ogm->type = gm->type;
8618 ogm->group_id = htonl(gm->group_id);
8619 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8620 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8622 /* Add group properties */
8623 if (gm->props.selection_method[0]) {
8624 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8627 id_pool_destroy(bucket_ids);
8632 bad_group_cmd(enum ofp15_group_mod_command cmd)
8634 const char *opt_version;
8635 const char *version;
8636 const char *cmd_str;
8640 case OFPGC15_MODIFY:
8641 case OFPGC15_DELETE:
8646 case OFPGC15_INSERT_BUCKET:
8647 case OFPGC15_REMOVE_BUCKET:
8658 cmd_str = "add-group";
8661 case OFPGC15_MODIFY:
8662 cmd_str = "mod-group";
8665 case OFPGC15_DELETE:
8666 cmd_str = "del-group";
8669 case OFPGC15_INSERT_BUCKET:
8670 cmd_str = "insert-bucket";
8673 case OFPGC15_REMOVE_BUCKET:
8674 cmd_str = "remove-bucket";
8681 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8682 cmd_str, version, opt_version);
8686 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8687 * 'ofp_version' and returns the message. */
8689 ofputil_encode_group_mod(enum ofp_version ofp_version,
8690 const struct ofputil_group_mod *gm)
8693 switch (ofp_version) {
8695 bad_group_cmd(gm->command);
8701 if (gm->command > OFPGC11_DELETE) {
8702 bad_group_cmd(gm->command);
8704 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8707 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8715 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8716 struct ofputil_group_mod *gm)
8718 const struct ofp11_group_mod *ogm;
8721 ogm = ofpbuf_pull(msg, sizeof *ogm);
8722 gm->command = ntohs(ogm->command);
8723 gm->type = ogm->type;
8724 gm->group_id = ntohl(ogm->group_id);
8725 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8727 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8730 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8732 && ofp_version >= OFP13_VERSION
8733 && gm->command == OFPGC11_DELETE
8734 && !list_is_empty(&gm->buckets)) {
8735 error = OFPERR_OFPGMFC_INVALID_GROUP;
8742 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8743 struct ofputil_group_mod *gm)
8745 const struct ofp15_group_mod *ogm;
8746 uint16_t bucket_list_len;
8747 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8749 ogm = ofpbuf_pull(msg, sizeof *ogm);
8750 gm->command = ntohs(ogm->command);
8751 gm->type = ogm->type;
8752 gm->group_id = ntohl(ogm->group_id);
8754 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8755 switch (gm->command) {
8756 case OFPGC15_REMOVE_BUCKET:
8757 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8761 case OFPGC15_INSERT_BUCKET:
8762 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8763 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8764 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8770 case OFPGC11_MODIFY:
8771 case OFPGC11_DELETE:
8773 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8779 VLOG_WARN_RL(&bad_ofmsg_rl,
8780 "group command bucket id (%u) is out of range",
8781 gm->command_bucket_id);
8782 return OFPERR_OFPGMFC_BAD_BUCKET;
8785 bucket_list_len = ntohs(ogm->bucket_array_len);
8786 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8787 gm->type, &gm->buckets);
8792 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8796 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8797 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8799 ofputil_decode_group_mod(const struct ofp_header *oh,
8800 struct ofputil_group_mod *gm)
8802 enum ofp_version ofp_version = oh->version;
8804 struct ofputil_bucket *bucket;
8807 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
8808 ofpraw_pull_assert(&msg);
8810 ofputil_init_group_properties(&gm->props);
8812 switch (ofp_version)
8818 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8822 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8835 case OFPGT11_INDIRECT:
8836 if (!list_is_singleton(&gm->buckets)) {
8837 return OFPERR_OFPGMFC_INVALID_GROUP;
8841 case OFPGT11_SELECT:
8845 return OFPERR_OFPGMFC_BAD_TYPE;
8848 switch (gm->command) {
8850 case OFPGC11_MODIFY:
8851 case OFPGC11_DELETE:
8852 case OFPGC15_INSERT_BUCKET:
8854 case OFPGC15_REMOVE_BUCKET:
8855 if (!list_is_empty(&gm->buckets)) {
8856 return OFPERR_OFPGMFC_BAD_BUCKET;
8860 return OFPERR_OFPGMFC_BAD_COMMAND;
8863 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8864 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8865 return OFPERR_OFPGMFC_INVALID_GROUP;
8870 case OFPGT11_INDIRECT:
8871 if (ofputil_bucket_has_liveness(bucket)) {
8872 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8875 case OFPGT11_SELECT:
8878 if (!ofputil_bucket_has_liveness(bucket)) {
8879 return OFPERR_OFPGMFC_INVALID_GROUP;
8890 /* Parse a queue status request message into 'oqsr'.
8891 * Returns 0 if successful, otherwise an OFPERR_* number. */
8893 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8894 struct ofputil_queue_stats_request *oqsr)
8896 switch ((enum ofp_version)request->version) {
8901 case OFP11_VERSION: {
8902 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8903 oqsr->queue_id = ntohl(qsr11->queue_id);
8904 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8907 case OFP10_VERSION: {
8908 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8909 oqsr->queue_id = ntohl(qsr10->queue_id);
8910 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8911 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
8912 if (oqsr->port_no == OFPP_ALL) {
8913 oqsr->port_no = OFPP_ANY;
8923 /* Encode a queue stats request for 'oqsr', the encoded message
8924 * will be for OpenFlow version 'ofp_version'. Returns message
8925 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
8927 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
8928 const struct ofputil_queue_stats_request *oqsr)
8930 struct ofpbuf *request;
8932 switch (ofp_version) {
8937 case OFP15_VERSION: {
8938 struct ofp11_queue_stats_request *req;
8939 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
8940 req = ofpbuf_put_zeros(request, sizeof *req);
8941 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
8942 req->queue_id = htonl(oqsr->queue_id);
8945 case OFP10_VERSION: {
8946 struct ofp10_queue_stats_request *req;
8947 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
8948 req = ofpbuf_put_zeros(request, sizeof *req);
8949 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
8950 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
8951 ? OFPP_ALL : oqsr->port_no));
8952 req->queue_id = htonl(oqsr->queue_id);
8962 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
8965 ofputil_count_queue_stats(const struct ofp_header *oh)
8967 struct ofputil_queue_stats qs;
8971 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8972 ofpraw_pull_assert(&b);
8973 while (!ofputil_decode_queue_stats(&qs, &b)) {
8980 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
8981 const struct ofp10_queue_stats *qs10)
8983 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
8984 oqs->queue_id = ntohl(qs10->queue_id);
8985 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
8986 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
8987 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
8988 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8994 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
8995 const struct ofp11_queue_stats *qs11)
8999 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
9004 oqs->queue_id = ntohl(qs11->queue_id);
9005 oqs->tx_bytes = ntohll(qs11->tx_bytes);
9006 oqs->tx_packets = ntohll(qs11->tx_packets);
9007 oqs->tx_errors = ntohll(qs11->tx_errors);
9008 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
9014 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
9015 const struct ofp13_queue_stats *qs13)
9017 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
9019 oqs->duration_sec = ntohl(qs13->duration_sec);
9020 oqs->duration_nsec = ntohl(qs13->duration_nsec);
9027 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
9030 const struct ofp14_queue_stats *qs14;
9033 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
9035 return OFPERR_OFPBRC_BAD_LEN;
9038 len = ntohs(qs14->length);
9039 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
9040 return OFPERR_OFPBRC_BAD_LEN;
9042 ofpbuf_pull(msg, len - sizeof *qs14);
9044 /* No properties yet defined, so ignore them for now. */
9046 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
9049 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
9050 * ofputil_queue_stats in 'qs'.
9052 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
9053 * message. Calling this function multiple times for a single 'msg' iterates
9054 * through the replies. The caller must initially leave 'msg''s layer pointers
9055 * null and not modify them between calls.
9057 * Returns 0 if successful, EOF if no replies were left in this 'msg',
9058 * otherwise a positive errno value. */
9060 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
9065 error = (msg->header ? ofpraw_decode(&raw, msg->header)
9066 : ofpraw_pull(&raw, msg));
9073 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
9074 return ofputil_pull_ofp14_queue_stats(qs, msg);
9075 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
9076 const struct ofp13_queue_stats *qs13;
9078 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
9082 return ofputil_queue_stats_from_ofp13(qs, qs13);
9083 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
9084 const struct ofp11_queue_stats *qs11;
9086 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
9090 return ofputil_queue_stats_from_ofp11(qs, qs11);
9091 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
9092 const struct ofp10_queue_stats *qs10;
9094 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
9098 return ofputil_queue_stats_from_ofp10(qs, qs10);
9104 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
9105 "bytes at end", msg->size);
9106 return OFPERR_OFPBRC_BAD_LEN;
9110 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
9111 struct ofp10_queue_stats *qs10)
9113 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
9114 memset(qs10->pad, 0, sizeof qs10->pad);
9115 qs10->queue_id = htonl(oqs->queue_id);
9116 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
9117 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
9118 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
9122 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
9123 struct ofp11_queue_stats *qs11)
9125 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
9126 qs11->queue_id = htonl(oqs->queue_id);
9127 qs11->tx_bytes = htonll(oqs->tx_bytes);
9128 qs11->tx_packets = htonll(oqs->tx_packets);
9129 qs11->tx_errors = htonll(oqs->tx_errors);
9133 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
9134 struct ofp13_queue_stats *qs13)
9136 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
9137 if (oqs->duration_sec != UINT32_MAX) {
9138 qs13->duration_sec = htonl(oqs->duration_sec);
9139 qs13->duration_nsec = htonl(oqs->duration_nsec);
9141 qs13->duration_sec = OVS_BE32_MAX;
9142 qs13->duration_nsec = OVS_BE32_MAX;
9147 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
9148 struct ofp14_queue_stats *qs14)
9150 qs14->length = htons(sizeof *qs14);
9151 memset(qs14->pad, 0, sizeof qs14->pad);
9152 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
9156 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
9158 ofputil_append_queue_stat(struct ovs_list *replies,
9159 const struct ofputil_queue_stats *oqs)
9161 switch (ofpmp_version(replies)) {
9162 case OFP13_VERSION: {
9163 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9164 ofputil_queue_stats_to_ofp13(oqs, reply);
9169 case OFP11_VERSION: {
9170 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9171 ofputil_queue_stats_to_ofp11(oqs, reply);
9175 case OFP10_VERSION: {
9176 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9177 ofputil_queue_stats_to_ofp10(oqs, reply);
9182 case OFP15_VERSION: {
9183 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9184 ofputil_queue_stats_to_ofp14(oqs, reply);
9194 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
9195 struct ofputil_bundle_ctrl_msg *msg)
9199 const struct ofp14_bundle_ctrl_msg *m;
9201 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9202 raw = ofpraw_pull_assert(&b);
9203 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
9206 msg->bundle_id = ntohl(m->bundle_id);
9207 msg->type = ntohs(m->type);
9208 msg->flags = ntohs(m->flags);
9214 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9215 struct ofputil_bundle_ctrl_msg *bc)
9217 struct ofpbuf *request;
9218 struct ofp14_bundle_ctrl_msg *m;
9220 switch (ofp_version) {
9225 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9226 "(\'-O OpenFlow14\')");
9229 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9230 m = ofpbuf_put_zeros(request, sizeof *m);
9232 m->bundle_id = htonl(bc->bundle_id);
9233 m->type = htons(bc->type);
9234 m->flags = htons(bc->flags);
9244 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9245 struct ofputil_bundle_ctrl_msg *msg)
9248 struct ofp14_bundle_ctrl_msg *m;
9250 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9251 m = ofpbuf_put_zeros(buf, sizeof *m);
9253 m->bundle_id = htonl(msg->bundle_id);
9254 m->type = htons(msg->type);
9255 m->flags = htons(msg->flags);
9260 /* Return true for bundlable state change requests, false for other messages.
9263 ofputil_is_bundlable(enum ofptype type)
9266 /* Minimum required by OpenFlow 1.4. */
9267 case OFPTYPE_PORT_MOD:
9268 case OFPTYPE_FLOW_MOD:
9271 /* Nice to have later. */
9272 case OFPTYPE_FLOW_MOD_TABLE_ID:
9273 case OFPTYPE_GROUP_MOD:
9274 case OFPTYPE_TABLE_MOD:
9275 case OFPTYPE_METER_MOD:
9276 case OFPTYPE_PACKET_OUT:
9277 case OFPTYPE_NXT_TLV_TABLE_MOD:
9279 /* Not to be bundlable. */
9280 case OFPTYPE_ECHO_REQUEST:
9281 case OFPTYPE_FEATURES_REQUEST:
9282 case OFPTYPE_GET_CONFIG_REQUEST:
9283 case OFPTYPE_SET_CONFIG:
9284 case OFPTYPE_BARRIER_REQUEST:
9285 case OFPTYPE_ROLE_REQUEST:
9286 case OFPTYPE_ECHO_REPLY:
9287 case OFPTYPE_SET_FLOW_FORMAT:
9288 case OFPTYPE_SET_PACKET_IN_FORMAT:
9289 case OFPTYPE_SET_CONTROLLER_ID:
9290 case OFPTYPE_FLOW_AGE:
9291 case OFPTYPE_FLOW_MONITOR_CANCEL:
9292 case OFPTYPE_SET_ASYNC_CONFIG:
9293 case OFPTYPE_GET_ASYNC_REQUEST:
9294 case OFPTYPE_DESC_STATS_REQUEST:
9295 case OFPTYPE_FLOW_STATS_REQUEST:
9296 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9297 case OFPTYPE_TABLE_STATS_REQUEST:
9298 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9299 case OFPTYPE_TABLE_DESC_REQUEST:
9300 case OFPTYPE_PORT_STATS_REQUEST:
9301 case OFPTYPE_QUEUE_STATS_REQUEST:
9302 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9303 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9304 case OFPTYPE_METER_STATS_REQUEST:
9305 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9306 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9307 case OFPTYPE_GROUP_STATS_REQUEST:
9308 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9309 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9310 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9311 case OFPTYPE_BUNDLE_CONTROL:
9312 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9315 case OFPTYPE_FEATURES_REPLY:
9316 case OFPTYPE_GET_CONFIG_REPLY:
9317 case OFPTYPE_PACKET_IN:
9318 case OFPTYPE_FLOW_REMOVED:
9319 case OFPTYPE_PORT_STATUS:
9320 case OFPTYPE_BARRIER_REPLY:
9321 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9322 case OFPTYPE_DESC_STATS_REPLY:
9323 case OFPTYPE_FLOW_STATS_REPLY:
9324 case OFPTYPE_QUEUE_STATS_REPLY:
9325 case OFPTYPE_PORT_STATS_REPLY:
9326 case OFPTYPE_TABLE_STATS_REPLY:
9327 case OFPTYPE_AGGREGATE_STATS_REPLY:
9328 case OFPTYPE_PORT_DESC_STATS_REPLY:
9329 case OFPTYPE_ROLE_REPLY:
9330 case OFPTYPE_FLOW_MONITOR_PAUSED:
9331 case OFPTYPE_FLOW_MONITOR_RESUMED:
9332 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9333 case OFPTYPE_GET_ASYNC_REPLY:
9334 case OFPTYPE_GROUP_STATS_REPLY:
9335 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9336 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9337 case OFPTYPE_METER_STATS_REPLY:
9338 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9339 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9340 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9341 case OFPTYPE_TABLE_DESC_REPLY:
9342 case OFPTYPE_ROLE_STATUS:
9343 case OFPTYPE_REQUESTFORWARD:
9344 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9345 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9353 ofputil_decode_bundle_add(const struct ofp_header *oh,
9354 struct ofputil_bundle_add_msg *msg,
9355 enum ofptype *type_ptr)
9357 const struct ofp14_bundle_ctrl_msg *m;
9364 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9365 raw = ofpraw_pull_assert(&b);
9366 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9368 m = ofpbuf_pull(&b, sizeof *m);
9369 msg->bundle_id = ntohl(m->bundle_id);
9370 msg->flags = ntohs(m->flags);
9373 if (msg->msg->version != oh->version) {
9374 return OFPERR_NXBFC_BAD_VERSION;
9376 inner_len = ntohs(msg->msg->length);
9377 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9378 return OFPERR_OFPBFC_MSG_BAD_LEN;
9380 if (msg->msg->xid != oh->xid) {
9381 return OFPERR_OFPBFC_MSG_BAD_XID;
9384 /* Reject unbundlable messages. */
9388 error = ofptype_decode(type_ptr, msg->msg);
9390 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9391 "message is unparsable (%s)", ofperr_get_name(error));
9392 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9395 if (!ofputil_is_bundlable(*type_ptr)) {
9396 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9397 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(*type_ptr));
9398 return OFPERR_OFPBFC_MSG_UNSUP;
9405 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9406 struct ofputil_bundle_add_msg *msg)
9408 struct ofpbuf *request;
9409 struct ofp14_bundle_ctrl_msg *m;
9411 /* Must use the same xid as the embedded message. */
9412 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9414 m = ofpbuf_put_zeros(request, sizeof *m);
9416 m->bundle_id = htonl(msg->bundle_id);
9417 m->flags = htons(msg->flags);
9418 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9424 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9426 struct ofputil_tlv_map *map;
9428 LIST_FOR_EACH (map, list_node, mappings) {
9429 struct nx_tlv_map *nx_map;
9431 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9432 nx_map->option_class = htons(map->option_class);
9433 nx_map->option_type = map->option_type;
9434 nx_map->option_len = map->option_len;
9435 nx_map->index = htons(map->index);
9440 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9441 struct ofputil_tlv_table_mod *ttm)
9444 struct nx_tlv_table_mod *nx_ttm;
9446 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9447 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9448 nx_ttm->command = htons(ttm->command);
9449 encode_tlv_table_mappings(b, &ttm->mappings);
9455 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9456 struct ovs_list *mappings)
9458 list_init(mappings);
9461 struct nx_tlv_map *nx_map;
9462 struct ofputil_tlv_map *map;
9464 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9465 map = xmalloc(sizeof *map);
9466 list_push_back(mappings, &map->list_node);
9468 map->option_class = ntohs(nx_map->option_class);
9469 map->option_type = nx_map->option_type;
9471 map->option_len = nx_map->option_len;
9472 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9473 VLOG_WARN_RL(&bad_ofmsg_rl,
9474 "tlv table option length (%u) is not a valid option size",
9476 ofputil_uninit_tlv_table(mappings);
9477 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9480 map->index = ntohs(nx_map->index);
9481 if (map->index >= max_fields) {
9482 VLOG_WARN_RL(&bad_ofmsg_rl,
9483 "tlv table field index (%u) is too large (max %u)",
9484 map->index, max_fields - 1);
9485 ofputil_uninit_tlv_table(mappings);
9486 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9494 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9495 struct ofputil_tlv_table_mod *ttm)
9498 struct nx_tlv_table_mod *nx_ttm;
9500 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9501 ofpraw_pull_assert(&msg);
9503 nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9504 ttm->command = ntohs(nx_ttm->command);
9505 if (ttm->command > NXTTMC_CLEAR) {
9506 VLOG_WARN_RL(&bad_ofmsg_rl,
9507 "tlv table mod command (%u) is out of range",
9509 return OFPERR_NXTTMFC_BAD_COMMAND;
9512 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9517 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9518 struct ofputil_tlv_table_reply *ttr)
9521 struct nx_tlv_table_reply *nx_ttr;
9523 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9524 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9525 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9526 nx_ttr->max_fields = htons(ttr->max_fields);
9528 encode_tlv_table_mappings(b, &ttr->mappings);
9533 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9534 * if successful, otherwise an ofperr.
9536 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9537 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9538 * less than TUN_METADATA_NUM_OPTS. */
9540 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9541 struct ofputil_tlv_table_reply *ttr)
9544 struct nx_tlv_table_reply *nx_ttr;
9546 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9547 ofpraw_pull_assert(&msg);
9549 nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9550 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9551 ttr->max_fields = ntohs(nx_ttr->max_fields);
9553 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9557 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9559 struct ofputil_tlv_map *map;
9561 LIST_FOR_EACH_POP (map, list_node, mappings) {
9566 /* Decodes the OpenFlow "set async config" request and "get async config
9567 * reply" message in '*oh' into an abstract form in 'master' and 'slave'.
9569 * If 'loose' is true, this function ignores properties and values that it does
9570 * not understand, as a controller would want to do when interpreting
9571 * capabilities provided by a switch. If 'loose' is false, this function
9572 * treats unknown properties and values as an error, as a switch would want to
9573 * do when interpreting a configuration request made by a controller.
9575 * Returns 0 if successful, otherwise an OFPERR_* value.
9577 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9578 * the valid range of mask.
9580 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9583 ofputil_decode_set_async_config(const struct ofp_header *oh,
9584 uint32_t master[OAM_N_TYPES],
9585 uint32_t slave[OAM_N_TYPES],
9591 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9592 raw = ofpraw_pull_assert(&b);
9594 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9595 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9596 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9597 const struct nx_async_config *msg = ofpmsg_body(oh);
9599 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
9600 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
9601 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
9603 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
9604 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
9605 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
9607 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9608 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY) {
9610 while (b.size > 0) {
9611 struct ofp14_async_config_prop_reasons *msg;
9612 struct ofpbuf property;
9616 error = ofputil_pull_property(&b, &property, &type);
9621 msg = property.data;
9623 if (property.size != sizeof *msg) {
9624 return OFPERR_OFPBRC_BAD_LEN;
9628 error = ofputil_check_mask(type, ntohl(msg->mask));
9635 case OFPACPT_PACKET_IN_SLAVE:
9636 slave[OAM_PACKET_IN] = ntohl(msg->mask);
9639 case OFPACPT_PACKET_IN_MASTER:
9640 master[OAM_PACKET_IN] = ntohl(msg->mask);
9643 case OFPACPT_PORT_STATUS_SLAVE:
9644 slave[OAM_PORT_STATUS] = ntohl(msg->mask);
9647 case OFPACPT_PORT_STATUS_MASTER:
9648 master[OAM_PORT_STATUS] = ntohl(msg->mask);
9651 case OFPACPT_FLOW_REMOVED_SLAVE:
9652 slave[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9655 case OFPACPT_FLOW_REMOVED_MASTER:
9656 master[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9659 case OFPACPT_ROLE_STATUS_SLAVE:
9660 slave[OAM_ROLE_STATUS] = ntohl(msg->mask);
9663 case OFPACPT_ROLE_STATUS_MASTER:
9664 master[OAM_ROLE_STATUS] = ntohl(msg->mask);
9667 case OFPACPT_TABLE_STATUS_SLAVE:
9668 slave[OAM_TABLE_STATUS] = ntohl(msg->mask);
9671 case OFPACPT_TABLE_STATUS_MASTER:
9672 master[OAM_TABLE_STATUS] = ntohl(msg->mask);
9675 case OFPACPT_REQUESTFORWARD_SLAVE:
9676 slave[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9679 case OFPACPT_REQUESTFORWARD_MASTER:
9680 master[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9684 error = loose ? 0 : OFPERR_OFPACFC_UNSUPPORTED;
9689 return OFPERR_OFPBRC_BAD_VERSION;
9694 /* Append all asynchronous configuration properties in GET_ASYNC_REPLY
9695 * message, describing if various set of asynchronous messages are enabled
9698 ofputil_get_async_reply(struct ofpbuf *buf, const uint32_t master_mask,
9699 const uint32_t slave_mask, const uint32_t type)
9703 for (role = 0; role < 2; role++) {
9704 struct ofp14_async_config_prop_reasons *msg;
9706 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9710 msg->type = (role ? htons(OFPACPT_PACKET_IN_SLAVE)
9711 : htons(OFPACPT_PACKET_IN_MASTER));
9714 case OAM_PORT_STATUS:
9715 msg->type = (role ? htons(OFPACPT_PORT_STATUS_SLAVE)
9716 : htons(OFPACPT_PORT_STATUS_MASTER));
9719 case OAM_FLOW_REMOVED:
9720 msg->type = (role ? htons(OFPACPT_FLOW_REMOVED_SLAVE)
9721 : htons(OFPACPT_FLOW_REMOVED_MASTER));
9724 case OAM_ROLE_STATUS:
9725 msg->type = (role ? htons(OFPACPT_ROLE_STATUS_SLAVE)
9726 : htons(OFPACPT_ROLE_STATUS_MASTER));
9729 case OAM_TABLE_STATUS:
9730 msg->type = (role ? htons(OFPACPT_TABLE_STATUS_SLAVE)
9731 : htons(OFPACPT_TABLE_STATUS_MASTER));
9734 case OAM_REQUESTFORWARD:
9735 msg->type = (role ? htons(OFPACPT_REQUESTFORWARD_SLAVE)
9736 : htons(OFPACPT_REQUESTFORWARD_MASTER));
9740 return OFPERR_OFPBRC_BAD_TYPE;
9742 msg->length = htons(sizeof *msg);
9743 msg->mask = (role ? htonl(slave_mask) : htonl(master_mask));
9749 /* Returns a OpenFlow message that encodes 'asynchronous configuration' properly
9750 * as a reply to get async config request. */
9752 ofputil_encode_get_async_config(const struct ofp_header *oh,
9753 uint32_t master[OAM_N_TYPES],
9754 uint32_t slave[OAM_N_TYPES])
9759 buf = ofpraw_alloc_reply((oh->version < OFP14_VERSION
9760 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9761 : OFPRAW_OFPT14_GET_ASYNC_REPLY), oh, 0);
9763 if (oh->version < OFP14_VERSION) {
9764 struct nx_async_config *msg;
9765 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9767 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
9768 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
9769 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
9771 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
9772 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
9773 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
9774 } else if (oh->version == OFP14_VERSION) {
9775 for (type = 0; type < OAM_N_TYPES; type++) {
9776 ofputil_get_async_reply(buf, master[type], slave[type], type);