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 = ofpbuf_at_assert(msg, start_ofs, sizeof *reply);
2043 reply->length = htons(msg->size - start_ofs);
2045 ofpmp_postappend(replies, start_ofs);
2048 /* Encode a meter stat for 'ms' and append it to 'replies'. */
2050 ofputil_append_meter_stats(struct ovs_list *replies,
2051 const struct ofputil_meter_stats *ms)
2053 struct ofp13_meter_stats *reply;
2057 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
2058 reply = ofpmp_append(replies, len);
2060 reply->meter_id = htonl(ms->meter_id);
2061 reply->len = htons(len);
2062 memset(reply->pad, 0, sizeof reply->pad);
2063 reply->flow_count = htonl(ms->flow_count);
2064 reply->packet_in_count = htonll(ms->packet_in_count);
2065 reply->byte_in_count = htonll(ms->byte_in_count);
2066 reply->duration_sec = htonl(ms->duration_sec);
2067 reply->duration_nsec = htonl(ms->duration_nsec);
2069 for (n = 0; n < ms->n_bands; ++n) {
2070 const struct ofputil_meter_band_stats *src = &ms->bands[n];
2071 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
2073 dst->packet_band_count = htonll(src->packet_count);
2074 dst->byte_band_count = htonll(src->byte_count);
2078 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
2079 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
2080 * 'bands'. The caller must have initialized 'bands' and retains ownership of
2081 * it across the call.
2083 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
2084 * message. Calling this function multiple times for a single 'msg' iterates
2085 * through the replies. 'bands' is cleared for each reply.
2087 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2088 * otherwise a positive errno value. */
2090 ofputil_decode_meter_config(struct ofpbuf *msg,
2091 struct ofputil_meter_config *mc,
2092 struct ofpbuf *bands)
2094 const struct ofp13_meter_config *omc;
2097 /* Pull OpenFlow headers for the first call. */
2099 ofpraw_pull_assert(msg);
2106 omc = ofpbuf_try_pull(msg, sizeof *omc);
2108 VLOG_WARN_RL(&bad_ofmsg_rl,
2109 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2111 return OFPERR_OFPBRC_BAD_LEN;
2114 ofpbuf_clear(bands);
2115 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2116 &mc->n_bands, bands);
2120 mc->meter_id = ntohl(omc->meter_id);
2121 mc->flags = ntohs(omc->flags);
2122 mc->bands = bands->data;
2128 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2129 struct ofpbuf *bands)
2131 const struct ofp13_meter_band_stats *ombs;
2132 struct ofputil_meter_band_stats *mbs;
2135 ombs = ofpbuf_try_pull(msg, len);
2137 return OFPERR_OFPBRC_BAD_LEN;
2140 n = len / sizeof *ombs;
2141 if (len != n * sizeof *ombs) {
2142 return OFPERR_OFPBRC_BAD_LEN;
2145 mbs = ofpbuf_put_uninit(bands, len);
2147 for (i = 0; i < n; ++i) {
2148 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2149 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2155 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2156 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2157 * decoded into 'bands'.
2159 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2160 * message. Calling this function multiple times for a single 'msg' iterates
2161 * through the replies. 'bands' is cleared for each reply.
2163 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2164 * otherwise a positive errno value. */
2166 ofputil_decode_meter_stats(struct ofpbuf *msg,
2167 struct ofputil_meter_stats *ms,
2168 struct ofpbuf *bands)
2170 const struct ofp13_meter_stats *oms;
2173 /* Pull OpenFlow headers for the first call. */
2175 ofpraw_pull_assert(msg);
2182 oms = ofpbuf_try_pull(msg, sizeof *oms);
2184 VLOG_WARN_RL(&bad_ofmsg_rl,
2185 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2187 return OFPERR_OFPBRC_BAD_LEN;
2190 ofpbuf_clear(bands);
2191 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2192 &ms->n_bands, bands);
2196 ms->meter_id = ntohl(oms->meter_id);
2197 ms->flow_count = ntohl(oms->flow_count);
2198 ms->packet_in_count = ntohll(oms->packet_in_count);
2199 ms->byte_in_count = ntohll(oms->byte_in_count);
2200 ms->duration_sec = ntohl(oms->duration_sec);
2201 ms->duration_nsec = ntohl(oms->duration_nsec);
2202 ms->bands = bands->data;
2208 ofputil_decode_meter_features(const struct ofp_header *oh,
2209 struct ofputil_meter_features *mf)
2211 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2213 mf->max_meters = ntohl(omf->max_meter);
2214 mf->band_types = ntohl(omf->band_types);
2215 mf->capabilities = ntohl(omf->capabilities);
2216 mf->max_bands = omf->max_bands;
2217 mf->max_color = omf->max_color;
2221 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2222 const struct ofp_header *request)
2224 struct ofpbuf *reply;
2225 struct ofp13_meter_features *omf;
2227 reply = ofpraw_alloc_stats_reply(request, 0);
2228 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2230 omf->max_meter = htonl(mf->max_meters);
2231 omf->band_types = htonl(mf->band_types);
2232 omf->capabilities = htonl(mf->capabilities);
2233 omf->max_bands = mf->max_bands;
2234 omf->max_color = mf->max_color;
2240 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2241 const struct ofputil_meter_mod *mm)
2245 struct ofp13_meter_mod *omm;
2247 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2248 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2249 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2250 omm->command = htons(mm->command);
2251 if (mm->command != OFPMC13_DELETE) {
2252 omm->flags = htons(mm->meter.flags);
2254 omm->meter_id = htonl(mm->meter.meter_id);
2256 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2258 ofpmsg_update_length(msg);
2263 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2264 enum ofputil_protocol protocol)
2266 return htons(protocol & OFPUTIL_P_TID
2267 ? (fm->command & 0xff) | (fm->table_id << 8)
2271 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2272 * 'protocol' and returns the message. */
2274 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2275 enum ofputil_protocol protocol)
2277 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2278 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2282 case OFPUTIL_P_OF11_STD:
2283 case OFPUTIL_P_OF12_OXM:
2284 case OFPUTIL_P_OF13_OXM:
2285 case OFPUTIL_P_OF14_OXM:
2286 case OFPUTIL_P_OF15_OXM: {
2287 struct ofp11_flow_mod *ofm;
2290 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2291 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2292 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2293 if ((protocol == OFPUTIL_P_OF11_STD
2294 && (fm->command == OFPFC_MODIFY ||
2295 fm->command == OFPFC_MODIFY_STRICT)
2296 && fm->cookie_mask == htonll(0))
2297 || fm->command == OFPFC_ADD) {
2298 ofm->cookie = fm->new_cookie;
2300 ofm->cookie = fm->cookie & fm->cookie_mask;
2302 ofm->cookie_mask = fm->cookie_mask;
2303 if (fm->table_id != OFPTT_ALL
2304 || (protocol != OFPUTIL_P_OF11_STD
2305 && (fm->command == OFPFC_DELETE ||
2306 fm->command == OFPFC_DELETE_STRICT))) {
2307 ofm->table_id = fm->table_id;
2311 ofm->command = fm->command;
2312 ofm->idle_timeout = htons(fm->idle_timeout);
2313 ofm->hard_timeout = htons(fm->hard_timeout);
2314 ofm->priority = htons(fm->priority);
2315 ofm->buffer_id = htonl(fm->buffer_id);
2316 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2317 ofm->out_group = htonl(fm->out_group);
2318 ofm->flags = raw_flags;
2319 if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
2320 ofm->importance = htons(fm->importance);
2322 ofm->importance = 0;
2324 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2325 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2330 case OFPUTIL_P_OF10_STD:
2331 case OFPUTIL_P_OF10_STD_TID: {
2332 struct ofp10_flow_mod *ofm;
2334 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2336 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2337 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2338 ofm->cookie = fm->new_cookie;
2339 ofm->command = ofputil_tid_command(fm, protocol);
2340 ofm->idle_timeout = htons(fm->idle_timeout);
2341 ofm->hard_timeout = htons(fm->hard_timeout);
2342 ofm->priority = htons(fm->priority);
2343 ofm->buffer_id = htonl(fm->buffer_id);
2344 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2345 ofm->flags = raw_flags;
2346 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2351 case OFPUTIL_P_OF10_NXM:
2352 case OFPUTIL_P_OF10_NXM_TID: {
2353 struct nx_flow_mod *nfm;
2356 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2357 NXM_TYPICAL_LEN + fm->ofpacts_len);
2358 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2359 nfm->command = ofputil_tid_command(fm, protocol);
2360 nfm->cookie = fm->new_cookie;
2361 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2363 nfm->idle_timeout = htons(fm->idle_timeout);
2364 nfm->hard_timeout = htons(fm->hard_timeout);
2365 nfm->priority = htons(fm->priority);
2366 nfm->buffer_id = htonl(fm->buffer_id);
2367 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2368 nfm->flags = raw_flags;
2369 nfm->match_len = htons(match_len);
2370 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2379 ofpmsg_update_length(msg);
2384 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2385 const struct ofp10_flow_stats_request *ofsr,
2388 fsr->aggregate = aggregate;
2389 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2390 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2391 fsr->out_group = OFPG_ANY;
2392 fsr->table_id = ofsr->table_id;
2393 fsr->cookie = fsr->cookie_mask = htonll(0);
2399 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2400 struct ofpbuf *b, bool aggregate)
2402 const struct ofp11_flow_stats_request *ofsr;
2405 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2406 fsr->aggregate = aggregate;
2407 fsr->table_id = ofsr->table_id;
2408 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2412 fsr->out_group = ntohl(ofsr->out_group);
2413 fsr->cookie = ofsr->cookie;
2414 fsr->cookie_mask = ofsr->cookie_mask;
2415 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2424 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2425 struct ofpbuf *b, bool aggregate)
2427 const struct nx_flow_stats_request *nfsr;
2430 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2431 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2432 &fsr->cookie, &fsr->cookie_mask);
2437 return OFPERR_OFPBRC_BAD_LEN;
2440 fsr->aggregate = aggregate;
2441 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2442 fsr->out_group = OFPG_ANY;
2443 fsr->table_id = nfsr->table_id;
2448 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2449 * 'port', suitable for OpenFlow version 'version'. */
2451 ofputil_encode_queue_get_config_request(enum ofp_version version,
2454 struct ofpbuf *request;
2456 if (version == OFP10_VERSION) {
2457 struct ofp10_queue_get_config_request *qgcr10;
2459 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2461 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2462 qgcr10->port = htons(ofp_to_u16(port));
2464 struct ofp11_queue_get_config_request *qgcr11;
2466 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2468 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2469 qgcr11->port = ofputil_port_to_ofp11(port);
2475 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2476 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2479 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2482 const struct ofp10_queue_get_config_request *qgcr10;
2483 const struct ofp11_queue_get_config_request *qgcr11;
2487 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2488 raw = ofpraw_pull_assert(&b);
2490 switch ((int) raw) {
2491 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2493 *port = u16_to_ofp(ntohs(qgcr10->port));
2496 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2498 return ofputil_port_from_ofp11(qgcr11->port, port);
2504 /* Constructs and returns the beginning of a reply to
2505 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2506 * individual queues with ofputil_append_queue_get_config_reply(). */
2508 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2510 struct ofp10_queue_get_config_reply *qgcr10;
2511 struct ofp11_queue_get_config_reply *qgcr11;
2512 struct ofpbuf *reply;
2518 error = ofputil_decode_queue_get_config_request(oh, &port);
2521 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2522 raw = ofpraw_pull_assert(&b);
2524 switch ((int) raw) {
2525 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2526 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2528 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2529 qgcr10->port = htons(ofp_to_u16(port));
2532 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2533 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2535 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2536 qgcr11->port = ofputil_port_to_ofp11(port);
2547 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2550 if (rate != UINT16_MAX) {
2551 struct ofp_queue_prop_rate *oqpr;
2553 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2554 oqpr->prop_header.property = htons(property);
2555 oqpr->prop_header.len = htons(sizeof *oqpr);
2556 oqpr->rate = htons(rate);
2560 /* Appends a queue description for 'queue_id' to the
2561 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2563 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2564 const struct ofputil_queue_config *oqc)
2566 const struct ofp_header *oh = reply->data;
2567 size_t start_ofs, len_ofs;
2570 start_ofs = reply->size;
2571 if (oh->version < OFP12_VERSION) {
2572 struct ofp10_packet_queue *opq10;
2574 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2575 opq10->queue_id = htonl(oqc->queue_id);
2576 len_ofs = (char *) &opq10->len - (char *) reply->data;
2578 struct ofp11_queue_get_config_reply *qgcr11;
2579 struct ofp12_packet_queue *opq12;
2582 qgcr11 = reply->msg;
2583 port = qgcr11->port;
2585 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2587 opq12->queue_id = htonl(oqc->queue_id);
2588 len_ofs = (char *) &opq12->len - (char *) reply->data;
2591 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2592 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2594 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2595 *len = htons(reply->size - start_ofs);
2598 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2599 * stores in '*port' the port that the reply is about. The caller may call
2600 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2601 * queues included in the reply. Returns 0 if successful, otherwise an
2604 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2606 const struct ofp10_queue_get_config_reply *qgcr10;
2607 const struct ofp11_queue_get_config_reply *qgcr11;
2610 raw = ofpraw_pull_assert(reply);
2611 switch ((int) raw) {
2612 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2613 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2614 *port = u16_to_ofp(ntohs(qgcr10->port));
2617 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2618 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2619 return ofputil_port_from_ofp11(qgcr11->port, port);
2626 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2628 const struct ofp_queue_prop_rate *oqpr;
2630 if (hdr->len == htons(sizeof *oqpr)) {
2631 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2632 *rate = ntohs(oqpr->rate);
2635 return OFPERR_OFPBRC_BAD_LEN;
2639 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2640 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2641 * must already have pulled off the main header.
2643 * This function returns EOF if the last queue has already been decoded, 0 if a
2644 * queue was successfully decoded into '*queue', or an ofperr if there was a
2645 * problem decoding 'reply'. */
2647 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2648 struct ofputil_queue_config *queue)
2650 const struct ofp_header *oh;
2651 unsigned int opq_len;
2658 queue->min_rate = UINT16_MAX;
2659 queue->max_rate = UINT16_MAX;
2662 if (oh->version < OFP12_VERSION) {
2663 const struct ofp10_packet_queue *opq10;
2665 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2667 return OFPERR_OFPBRC_BAD_LEN;
2669 queue->queue_id = ntohl(opq10->queue_id);
2670 len = ntohs(opq10->len);
2671 opq_len = sizeof *opq10;
2673 const struct ofp12_packet_queue *opq12;
2675 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2677 return OFPERR_OFPBRC_BAD_LEN;
2679 queue->queue_id = ntohl(opq12->queue_id);
2680 len = ntohs(opq12->len);
2681 opq_len = sizeof *opq12;
2684 if (len < opq_len || len > reply->size + opq_len || len % 8) {
2685 return OFPERR_OFPBRC_BAD_LEN;
2690 const struct ofp_queue_prop_header *hdr;
2691 unsigned int property;
2692 unsigned int prop_len;
2693 enum ofperr error = 0;
2695 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2696 prop_len = ntohs(hdr->len);
2697 if (prop_len < sizeof *hdr || prop_len > reply->size || prop_len % 8) {
2698 return OFPERR_OFPBRC_BAD_LEN;
2701 property = ntohs(hdr->property);
2703 case OFPQT_MIN_RATE:
2704 error = parse_queue_rate(hdr, &queue->min_rate);
2707 case OFPQT_MAX_RATE:
2708 error = parse_queue_rate(hdr, &queue->max_rate);
2712 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2719 ofpbuf_pull(reply, prop_len);
2725 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2726 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2727 * successful, otherwise an OpenFlow error code. */
2729 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2730 const struct ofp_header *oh)
2735 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2736 raw = ofpraw_pull_assert(&b);
2737 switch ((int) raw) {
2738 case OFPRAW_OFPST10_FLOW_REQUEST:
2739 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2741 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2742 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2744 case OFPRAW_OFPST11_FLOW_REQUEST:
2745 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2747 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2748 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2750 case OFPRAW_NXST_FLOW_REQUEST:
2751 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2753 case OFPRAW_NXST_AGGREGATE_REQUEST:
2754 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2757 /* Hey, the caller lied. */
2762 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2763 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2764 * 'protocol', and returns the message. */
2766 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2767 enum ofputil_protocol protocol)
2773 case OFPUTIL_P_OF11_STD:
2774 case OFPUTIL_P_OF12_OXM:
2775 case OFPUTIL_P_OF13_OXM:
2776 case OFPUTIL_P_OF14_OXM:
2777 case OFPUTIL_P_OF15_OXM: {
2778 struct ofp11_flow_stats_request *ofsr;
2780 raw = (fsr->aggregate
2781 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2782 : OFPRAW_OFPST11_FLOW_REQUEST);
2783 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2784 ofputil_match_typical_len(protocol));
2785 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2786 ofsr->table_id = fsr->table_id;
2787 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2788 ofsr->out_group = htonl(fsr->out_group);
2789 ofsr->cookie = fsr->cookie;
2790 ofsr->cookie_mask = fsr->cookie_mask;
2791 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2795 case OFPUTIL_P_OF10_STD:
2796 case OFPUTIL_P_OF10_STD_TID: {
2797 struct ofp10_flow_stats_request *ofsr;
2799 raw = (fsr->aggregate
2800 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2801 : OFPRAW_OFPST10_FLOW_REQUEST);
2802 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2803 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2804 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2805 ofsr->table_id = fsr->table_id;
2806 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2810 case OFPUTIL_P_OF10_NXM:
2811 case OFPUTIL_P_OF10_NXM_TID: {
2812 struct nx_flow_stats_request *nfsr;
2815 raw = (fsr->aggregate
2816 ? OFPRAW_NXST_AGGREGATE_REQUEST
2817 : OFPRAW_NXST_FLOW_REQUEST);
2818 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2819 ofpbuf_put_zeros(msg, sizeof *nfsr);
2820 match_len = nx_put_match(msg, &fsr->match,
2821 fsr->cookie, fsr->cookie_mask);
2824 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2825 nfsr->match_len = htons(match_len);
2826 nfsr->table_id = fsr->table_id;
2837 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2838 * ofputil_flow_stats in 'fs'.
2840 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2841 * OpenFlow message. Calling this function multiple times for a single 'msg'
2842 * iterates through the replies. The caller must initially leave 'msg''s layer
2843 * pointers null and not modify them between calls.
2845 * Most switches don't send the values needed to populate fs->idle_age and
2846 * fs->hard_age, so those members will usually be set to 0. If the switch from
2847 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2848 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2849 * 'idle_age' and 'hard_age' members in 'fs'.
2851 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2852 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2853 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2855 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2856 * otherwise a positive errno value. */
2858 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2860 bool flow_age_extension,
2861 struct ofpbuf *ofpacts)
2863 const struct ofp_header *oh;
2864 size_t instructions_len;
2868 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2869 : ofpraw_pull(&raw, msg));
2877 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2878 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2879 const struct ofp11_flow_stats *ofs;
2881 uint16_t padded_match_len;
2883 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2885 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2886 "bytes at end", msg->size);
2890 length = ntohs(ofs->length);
2891 if (length < sizeof *ofs) {
2892 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2893 "length %"PRIuSIZE, length);
2897 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2898 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2901 instructions_len = length - sizeof *ofs - padded_match_len;
2903 fs->priority = ntohs(ofs->priority);
2904 fs->table_id = ofs->table_id;
2905 fs->duration_sec = ntohl(ofs->duration_sec);
2906 fs->duration_nsec = ntohl(ofs->duration_nsec);
2907 fs->idle_timeout = ntohs(ofs->idle_timeout);
2908 fs->hard_timeout = ntohs(ofs->hard_timeout);
2909 if (oh->version >= OFP14_VERSION) {
2910 fs->importance = ntohs(ofs->importance);
2914 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2915 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2925 fs->cookie = ofs->cookie;
2926 fs->packet_count = ntohll(ofs->packet_count);
2927 fs->byte_count = ntohll(ofs->byte_count);
2928 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2929 const struct ofp10_flow_stats *ofs;
2932 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2934 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2935 "bytes at end", msg->size);
2939 length = ntohs(ofs->length);
2940 if (length < sizeof *ofs) {
2941 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2942 "length %"PRIuSIZE, length);
2945 instructions_len = length - sizeof *ofs;
2947 fs->cookie = get_32aligned_be64(&ofs->cookie);
2948 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2949 fs->priority = ntohs(ofs->priority);
2950 fs->table_id = ofs->table_id;
2951 fs->duration_sec = ntohl(ofs->duration_sec);
2952 fs->duration_nsec = ntohl(ofs->duration_nsec);
2953 fs->idle_timeout = ntohs(ofs->idle_timeout);
2954 fs->hard_timeout = ntohs(ofs->hard_timeout);
2958 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2959 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2961 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2962 const struct nx_flow_stats *nfs;
2963 size_t match_len, length;
2965 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2967 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2968 "bytes at end", msg->size);
2972 length = ntohs(nfs->length);
2973 match_len = ntohs(nfs->match_len);
2974 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2975 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2976 "claims invalid length %"PRIuSIZE, match_len, length);
2979 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2982 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2984 fs->cookie = nfs->cookie;
2985 fs->table_id = nfs->table_id;
2986 fs->duration_sec = ntohl(nfs->duration_sec);
2987 fs->duration_nsec = ntohl(nfs->duration_nsec);
2988 fs->priority = ntohs(nfs->priority);
2989 fs->idle_timeout = ntohs(nfs->idle_timeout);
2990 fs->hard_timeout = ntohs(nfs->hard_timeout);
2994 if (flow_age_extension) {
2995 if (nfs->idle_age) {
2996 fs->idle_age = ntohs(nfs->idle_age) - 1;
2998 if (nfs->hard_age) {
2999 fs->hard_age = ntohs(nfs->hard_age) - 1;
3002 fs->packet_count = ntohll(nfs->packet_count);
3003 fs->byte_count = ntohll(nfs->byte_count);
3009 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
3011 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
3014 fs->ofpacts = ofpacts->data;
3015 fs->ofpacts_len = ofpacts->size;
3020 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
3022 * We use this in situations where OVS internally uses UINT64_MAX to mean
3023 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
3025 unknown_to_zero(uint64_t count)
3027 return count != UINT64_MAX ? count : 0;
3030 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
3031 * those already present in the list of ofpbufs in 'replies'. 'replies' should
3032 * have been initialized with ofpmp_init(). */
3034 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
3035 struct ovs_list *replies)
3037 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
3038 size_t start_ofs = reply->size;
3039 enum ofp_version version = ofpmp_version(replies);
3040 enum ofpraw raw = ofpmp_decode_raw(replies);
3042 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
3043 struct ofp11_flow_stats *ofs;
3045 ofpbuf_put_uninit(reply, sizeof *ofs);
3046 oxm_put_match(reply, &fs->match, version);
3047 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
3050 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3051 ofs->length = htons(reply->size - start_ofs);
3052 ofs->table_id = fs->table_id;
3054 ofs->duration_sec = htonl(fs->duration_sec);
3055 ofs->duration_nsec = htonl(fs->duration_nsec);
3056 ofs->priority = htons(fs->priority);
3057 ofs->idle_timeout = htons(fs->idle_timeout);
3058 ofs->hard_timeout = htons(fs->hard_timeout);
3059 if (version >= OFP14_VERSION) {
3060 ofs->importance = htons(fs->importance);
3062 ofs->importance = 0;
3064 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3065 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3069 memset(ofs->pad2, 0, sizeof ofs->pad2);
3070 ofs->cookie = fs->cookie;
3071 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3072 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3073 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3074 struct ofp10_flow_stats *ofs;
3076 ofpbuf_put_uninit(reply, sizeof *ofs);
3077 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3079 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3080 ofs->length = htons(reply->size - start_ofs);
3081 ofs->table_id = fs->table_id;
3083 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3084 ofs->duration_sec = htonl(fs->duration_sec);
3085 ofs->duration_nsec = htonl(fs->duration_nsec);
3086 ofs->priority = htons(fs->priority);
3087 ofs->idle_timeout = htons(fs->idle_timeout);
3088 ofs->hard_timeout = htons(fs->hard_timeout);
3089 memset(ofs->pad2, 0, sizeof ofs->pad2);
3090 put_32aligned_be64(&ofs->cookie, fs->cookie);
3091 put_32aligned_be64(&ofs->packet_count,
3092 htonll(unknown_to_zero(fs->packet_count)));
3093 put_32aligned_be64(&ofs->byte_count,
3094 htonll(unknown_to_zero(fs->byte_count)));
3095 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3096 struct nx_flow_stats *nfs;
3099 ofpbuf_put_uninit(reply, sizeof *nfs);
3100 match_len = nx_put_match(reply, &fs->match, 0, 0);
3101 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3103 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3104 nfs->length = htons(reply->size - start_ofs);
3105 nfs->table_id = fs->table_id;
3107 nfs->duration_sec = htonl(fs->duration_sec);
3108 nfs->duration_nsec = htonl(fs->duration_nsec);
3109 nfs->priority = htons(fs->priority);
3110 nfs->idle_timeout = htons(fs->idle_timeout);
3111 nfs->hard_timeout = htons(fs->hard_timeout);
3112 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3113 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3115 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3116 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3118 nfs->match_len = htons(match_len);
3119 nfs->cookie = fs->cookie;
3120 nfs->packet_count = htonll(fs->packet_count);
3121 nfs->byte_count = htonll(fs->byte_count);
3126 ofpmp_postappend(replies, start_ofs);
3129 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3130 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3132 ofputil_encode_aggregate_stats_reply(
3133 const struct ofputil_aggregate_stats *stats,
3134 const struct ofp_header *request)
3136 struct ofp_aggregate_stats_reply *asr;
3137 uint64_t packet_count;
3138 uint64_t byte_count;
3142 ofpraw_decode(&raw, request);
3143 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3144 packet_count = unknown_to_zero(stats->packet_count);
3145 byte_count = unknown_to_zero(stats->byte_count);
3147 packet_count = stats->packet_count;
3148 byte_count = stats->byte_count;
3151 msg = ofpraw_alloc_stats_reply(request, 0);
3152 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3153 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3154 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3155 asr->flow_count = htonl(stats->flow_count);
3161 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3162 const struct ofp_header *reply)
3164 struct ofp_aggregate_stats_reply *asr;
3167 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3168 ofpraw_pull_assert(&msg);
3171 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3172 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3173 stats->flow_count = ntohl(asr->flow_count);
3178 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3179 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3180 * an OpenFlow error code. */
3182 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3183 const struct ofp_header *oh)
3188 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3189 raw = ofpraw_pull_assert(&b);
3190 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3191 const struct ofp12_flow_removed *ofr;
3194 ofr = ofpbuf_pull(&b, sizeof *ofr);
3196 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3201 fr->priority = ntohs(ofr->priority);
3202 fr->cookie = ofr->cookie;
3203 fr->reason = ofr->reason;
3204 fr->table_id = ofr->table_id;
3205 fr->duration_sec = ntohl(ofr->duration_sec);
3206 fr->duration_nsec = ntohl(ofr->duration_nsec);
3207 fr->idle_timeout = ntohs(ofr->idle_timeout);
3208 fr->hard_timeout = ntohs(ofr->hard_timeout);
3209 fr->packet_count = ntohll(ofr->packet_count);
3210 fr->byte_count = ntohll(ofr->byte_count);
3211 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3212 const struct ofp10_flow_removed *ofr;
3214 ofr = ofpbuf_pull(&b, sizeof *ofr);
3216 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3217 fr->priority = ntohs(ofr->priority);
3218 fr->cookie = ofr->cookie;
3219 fr->reason = ofr->reason;
3221 fr->duration_sec = ntohl(ofr->duration_sec);
3222 fr->duration_nsec = ntohl(ofr->duration_nsec);
3223 fr->idle_timeout = ntohs(ofr->idle_timeout);
3224 fr->hard_timeout = 0;
3225 fr->packet_count = ntohll(ofr->packet_count);
3226 fr->byte_count = ntohll(ofr->byte_count);
3227 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3228 struct nx_flow_removed *nfr;
3231 nfr = ofpbuf_pull(&b, sizeof *nfr);
3232 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3238 return OFPERR_OFPBRC_BAD_LEN;
3241 fr->priority = ntohs(nfr->priority);
3242 fr->cookie = nfr->cookie;
3243 fr->reason = nfr->reason;
3244 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3245 fr->duration_sec = ntohl(nfr->duration_sec);
3246 fr->duration_nsec = ntohl(nfr->duration_nsec);
3247 fr->idle_timeout = ntohs(nfr->idle_timeout);
3248 fr->hard_timeout = 0;
3249 fr->packet_count = ntohll(nfr->packet_count);
3250 fr->byte_count = ntohll(nfr->byte_count);
3258 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3259 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3262 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3263 enum ofputil_protocol protocol)
3266 enum ofp_flow_removed_reason reason = fr->reason;
3268 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3269 reason = OFPRR_DELETE;
3273 case OFPUTIL_P_OF11_STD:
3274 case OFPUTIL_P_OF12_OXM:
3275 case OFPUTIL_P_OF13_OXM:
3276 case OFPUTIL_P_OF14_OXM:
3277 case OFPUTIL_P_OF15_OXM: {
3278 struct ofp12_flow_removed *ofr;
3280 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3281 ofputil_protocol_to_ofp_version(protocol),
3283 ofputil_match_typical_len(protocol));
3284 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3285 ofr->cookie = fr->cookie;
3286 ofr->priority = htons(fr->priority);
3287 ofr->reason = reason;
3288 ofr->table_id = fr->table_id;
3289 ofr->duration_sec = htonl(fr->duration_sec);
3290 ofr->duration_nsec = htonl(fr->duration_nsec);
3291 ofr->idle_timeout = htons(fr->idle_timeout);
3292 ofr->hard_timeout = htons(fr->hard_timeout);
3293 ofr->packet_count = htonll(fr->packet_count);
3294 ofr->byte_count = htonll(fr->byte_count);
3295 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3299 case OFPUTIL_P_OF10_STD:
3300 case OFPUTIL_P_OF10_STD_TID: {
3301 struct ofp10_flow_removed *ofr;
3303 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3305 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3306 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3307 ofr->cookie = fr->cookie;
3308 ofr->priority = htons(fr->priority);
3309 ofr->reason = reason;
3310 ofr->duration_sec = htonl(fr->duration_sec);
3311 ofr->duration_nsec = htonl(fr->duration_nsec);
3312 ofr->idle_timeout = htons(fr->idle_timeout);
3313 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3314 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3318 case OFPUTIL_P_OF10_NXM:
3319 case OFPUTIL_P_OF10_NXM_TID: {
3320 struct nx_flow_removed *nfr;
3323 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3324 htonl(0), NXM_TYPICAL_LEN);
3325 ofpbuf_put_zeros(msg, sizeof *nfr);
3326 match_len = nx_put_match(msg, &fr->match, 0, 0);
3329 nfr->cookie = fr->cookie;
3330 nfr->priority = htons(fr->priority);
3331 nfr->reason = reason;
3332 nfr->table_id = fr->table_id + 1;
3333 nfr->duration_sec = htonl(fr->duration_sec);
3334 nfr->duration_nsec = htonl(fr->duration_nsec);
3335 nfr->idle_timeout = htons(fr->idle_timeout);
3336 nfr->match_len = htons(match_len);
3337 nfr->packet_count = htonll(fr->packet_count);
3338 nfr->byte_count = htonll(fr->byte_count);
3350 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3351 const struct ofp_header *oh)
3356 memset(pin, 0, sizeof *pin);
3357 pin->cookie = OVS_BE64_MAX;
3359 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3360 raw = ofpraw_pull_assert(&b);
3361 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3362 const struct ofp13_packet_in *opi;
3364 size_t packet_in_size;
3366 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3367 packet_in_size = sizeof (struct ofp12_packet_in);
3369 packet_in_size = sizeof (struct ofp13_packet_in);
3372 opi = ofpbuf_pull(&b, packet_in_size);
3373 error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3378 if (!ofpbuf_try_pull(&b, 2)) {
3379 return OFPERR_OFPBRC_BAD_LEN;
3382 pin->reason = opi->pi.reason;
3383 pin->table_id = opi->pi.table_id;
3384 pin->buffer_id = ntohl(opi->pi.buffer_id);
3385 pin->total_len = ntohs(opi->pi.total_len);
3387 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3388 pin->cookie = opi->cookie;
3391 pin->packet = b.data;
3392 pin->packet_len = b.size;
3393 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3394 const struct ofp10_packet_in *opi;
3396 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3398 pin->packet = opi->data;
3399 pin->packet_len = b.size;
3401 match_init_catchall(&pin->flow_metadata);
3402 match_set_in_port(&pin->flow_metadata, u16_to_ofp(ntohs(opi->in_port)));
3403 pin->reason = opi->reason;
3404 pin->buffer_id = ntohl(opi->buffer_id);
3405 pin->total_len = ntohs(opi->total_len);
3406 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3407 const struct ofp11_packet_in *opi;
3411 opi = ofpbuf_pull(&b, sizeof *opi);
3413 pin->packet = b.data;
3414 pin->packet_len = b.size;
3416 pin->buffer_id = ntohl(opi->buffer_id);
3417 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3421 match_init_catchall(&pin->flow_metadata);
3422 match_set_in_port(&pin->flow_metadata, in_port);
3423 pin->total_len = ntohs(opi->total_len);
3424 pin->reason = opi->reason;
3425 pin->table_id = opi->table_id;
3426 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3427 const struct nx_packet_in *npi;
3430 npi = ofpbuf_pull(&b, sizeof *npi);
3431 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3432 &pin->flow_metadata, NULL, NULL);
3437 if (!ofpbuf_try_pull(&b, 2)) {
3438 return OFPERR_OFPBRC_BAD_LEN;
3441 pin->reason = npi->reason;
3442 pin->table_id = npi->table_id;
3443 pin->cookie = npi->cookie;
3445 pin->buffer_id = ntohl(npi->buffer_id);
3446 pin->total_len = ntohs(npi->total_len);
3448 pin->packet = b.data;
3449 pin->packet_len = b.size;
3457 static struct ofpbuf *
3458 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3460 struct ofp10_packet_in *opi;
3461 struct ofpbuf *packet;
3463 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3464 htonl(0), pin->packet_len);
3465 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3466 opi->total_len = htons(pin->total_len);
3467 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3468 opi->reason = pin->reason;
3469 opi->buffer_id = htonl(pin->buffer_id);
3471 ofpbuf_put(packet, pin->packet, pin->packet_len);
3476 static struct ofpbuf *
3477 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3479 struct nx_packet_in *npi;
3480 struct ofpbuf *packet;
3483 /* The final argument is just an estimate of the space required. */
3484 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3485 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3486 ofpbuf_put_zeros(packet, sizeof *npi);
3487 match_len = nx_put_match(packet, &pin->flow_metadata, 0, 0);
3488 ofpbuf_put_zeros(packet, 2);
3489 ofpbuf_put(packet, pin->packet, pin->packet_len);
3492 npi->buffer_id = htonl(pin->buffer_id);
3493 npi->total_len = htons(pin->total_len);
3494 npi->reason = pin->reason;
3495 npi->table_id = pin->table_id;
3496 npi->cookie = pin->cookie;
3497 npi->match_len = htons(match_len);
3502 static struct ofpbuf *
3503 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3505 struct ofp11_packet_in *opi;
3506 struct ofpbuf *packet;
3508 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3509 htonl(0), pin->packet_len);
3510 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3511 opi->buffer_id = htonl(pin->buffer_id);
3512 opi->in_port = ofputil_port_to_ofp11(pin->flow_metadata.flow.in_port.ofp_port);
3513 opi->in_phy_port = opi->in_port;
3514 opi->total_len = htons(pin->total_len);
3515 opi->reason = pin->reason;
3516 opi->table_id = pin->table_id;
3518 ofpbuf_put(packet, pin->packet, pin->packet_len);
3523 static struct ofpbuf *
3524 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3525 enum ofputil_protocol protocol)
3527 struct ofp13_packet_in *opi;
3528 enum ofpraw packet_in_raw;
3529 enum ofp_version packet_in_version;
3530 size_t packet_in_size;
3531 struct ofpbuf *packet;
3533 if (protocol == OFPUTIL_P_OF12_OXM) {
3534 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3535 packet_in_version = OFP12_VERSION;
3536 packet_in_size = sizeof (struct ofp12_packet_in);
3538 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3539 packet_in_version = ofputil_protocol_to_ofp_version(protocol);
3540 packet_in_size = sizeof (struct ofp13_packet_in);
3543 /* The final argument is just an estimate of the space required. */
3544 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3545 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3546 ofpbuf_put_zeros(packet, packet_in_size);
3547 oxm_put_match(packet, &pin->flow_metadata,
3548 ofputil_protocol_to_ofp_version(protocol));
3549 ofpbuf_put_zeros(packet, 2);
3550 ofpbuf_put(packet, pin->packet, pin->packet_len);
3553 opi->pi.buffer_id = htonl(pin->buffer_id);
3554 opi->pi.total_len = htons(pin->total_len);
3555 opi->pi.reason = pin->reason;
3556 opi->pi.table_id = pin->table_id;
3557 if (protocol != OFPUTIL_P_OF12_OXM) {
3558 opi->cookie = pin->cookie;
3564 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3565 * in the format specified by 'packet_in_format'. */
3567 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3568 enum ofputil_protocol protocol,
3569 enum nx_packet_in_format packet_in_format)
3571 struct ofpbuf *packet;
3574 case OFPUTIL_P_OF10_STD:
3575 case OFPUTIL_P_OF10_STD_TID:
3576 case OFPUTIL_P_OF10_NXM:
3577 case OFPUTIL_P_OF10_NXM_TID:
3578 packet = (packet_in_format == NXPIF_NXM
3579 ? ofputil_encode_nx_packet_in(pin)
3580 : ofputil_encode_ofp10_packet_in(pin));
3583 case OFPUTIL_P_OF11_STD:
3584 packet = ofputil_encode_ofp11_packet_in(pin);
3587 case OFPUTIL_P_OF12_OXM:
3588 case OFPUTIL_P_OF13_OXM:
3589 case OFPUTIL_P_OF14_OXM:
3590 case OFPUTIL_P_OF15_OXM:
3591 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3598 ofpmsg_update_length(packet);
3602 /* Returns a string form of 'reason'. The return value is either a statically
3603 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3604 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3606 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3607 char *reasonbuf, size_t bufsize)
3614 case OFPR_INVALID_TTL:
3615 return "invalid_ttl";
3616 case OFPR_ACTION_SET:
3617 return "action_set";
3620 case OFPR_PACKET_OUT:
3621 return "packet_out";
3623 case OFPR_N_REASONS:
3625 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3631 ofputil_packet_in_reason_from_string(const char *s,
3632 enum ofp_packet_in_reason *reason)
3636 for (i = 0; i < OFPR_N_REASONS; i++) {
3637 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3638 const char *reason_s;
3640 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3642 if (!strcasecmp(s, reason_s)) {
3650 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3653 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3654 * message's actions. The caller must initialize 'ofpacts' and retains
3655 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3657 * Returns 0 if successful, otherwise an OFPERR_* value. */
3659 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3660 const struct ofp_header *oh,
3661 struct ofpbuf *ofpacts)
3666 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3667 raw = ofpraw_pull_assert(&b);
3669 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3671 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3673 po->buffer_id = ntohl(opo->buffer_id);
3674 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3679 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3680 oh->version, ofpacts);
3684 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3686 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3688 po->buffer_id = ntohl(opo->buffer_id);
3689 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3691 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3692 oh->version, ofpacts);
3700 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3701 && po->in_port != OFPP_LOCAL
3702 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3703 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3705 return OFPERR_OFPBRC_BAD_PORT;
3708 po->ofpacts = ofpacts->data;
3709 po->ofpacts_len = ofpacts->size;
3711 if (po->buffer_id == UINT32_MAX) {
3712 po->packet = b.data;
3713 po->packet_len = b.size;
3722 /* ofputil_phy_port */
3724 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3725 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3726 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3727 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3728 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3729 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3730 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3731 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3733 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3734 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3735 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3736 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3737 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3738 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3740 static enum netdev_features
3741 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3743 uint32_t ofp10 = ntohl(ofp10_);
3744 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3748 netdev_port_features_to_ofp10(enum netdev_features features)
3750 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3753 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3754 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3755 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3756 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3757 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3758 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3759 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3760 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3761 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3762 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3763 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3764 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3765 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3766 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3767 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3768 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3770 static enum netdev_features
3771 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3773 return ntohl(ofp11) & 0xffff;
3777 netdev_port_features_to_ofp11(enum netdev_features features)
3779 return htonl(features & 0xffff);
3783 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3784 const struct ofp10_phy_port *opp)
3786 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3787 pp->hw_addr = opp->hw_addr;
3788 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3790 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3791 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3793 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3794 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3795 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3796 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3798 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3799 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3805 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3806 const struct ofp11_port *op)
3810 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3814 pp->hw_addr = op->hw_addr;
3815 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3817 pp->config = ntohl(op->config) & OFPPC11_ALL;
3818 pp->state = ntohl(op->state) & OFPPS11_ALL;
3820 pp->curr = netdev_port_features_from_ofp11(op->curr);
3821 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3822 pp->supported = netdev_port_features_from_ofp11(op->supported);
3823 pp->peer = netdev_port_features_from_ofp11(op->peer);
3825 pp->curr_speed = ntohl(op->curr_speed);
3826 pp->max_speed = ntohl(op->max_speed);
3832 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3833 struct ofputil_phy_port *pp)
3835 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3837 if (payload->size != sizeof *eth) {
3838 return OFPERR_OFPBPC_BAD_LEN;
3841 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3842 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3843 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3844 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3846 pp->curr_speed = ntohl(eth->curr_speed);
3847 pp->max_speed = ntohl(eth->max_speed);
3853 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3855 struct ofpbuf properties;
3856 struct ofp14_port *op;
3860 op = ofpbuf_try_pull(msg, sizeof *op);
3862 return OFPERR_OFPBRC_BAD_LEN;
3865 len = ntohs(op->length);
3866 if (len < sizeof *op || len - sizeof *op > msg->size) {
3867 return OFPERR_OFPBRC_BAD_LEN;
3870 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3872 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3876 pp->hw_addr = op->hw_addr;
3877 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3879 pp->config = ntohl(op->config) & OFPPC11_ALL;
3880 pp->state = ntohl(op->state) & OFPPS11_ALL;
3882 while (properties.size > 0) {
3883 struct ofpbuf payload;
3887 error = ofputil_pull_property(&properties, &payload, &type);
3893 case OFPPDPT14_ETHERNET:
3894 error = parse_ofp14_port_ethernet_property(&payload, pp);
3898 log_property(true, "unknown port property %"PRIu16, type);
3912 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3913 struct ofp10_phy_port *opp)
3915 memset(opp, 0, sizeof *opp);
3917 opp->port_no = htons(ofp_to_u16(pp->port_no));
3918 opp->hw_addr = pp->hw_addr;
3919 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3921 opp->config = htonl(pp->config & OFPPC10_ALL);
3922 opp->state = htonl(pp->state & OFPPS10_ALL);
3924 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3925 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3926 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3927 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3931 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3932 struct ofp11_port *op)
3934 memset(op, 0, sizeof *op);
3936 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3937 op->hw_addr = pp->hw_addr;
3938 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3940 op->config = htonl(pp->config & OFPPC11_ALL);
3941 op->state = htonl(pp->state & OFPPS11_ALL);
3943 op->curr = netdev_port_features_to_ofp11(pp->curr);
3944 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3945 op->supported = netdev_port_features_to_ofp11(pp->supported);
3946 op->peer = netdev_port_features_to_ofp11(pp->peer);
3948 op->curr_speed = htonl(pp->curr_speed);
3949 op->max_speed = htonl(pp->max_speed);
3953 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3956 struct ofp14_port *op;
3957 struct ofp14_port_desc_prop_ethernet *eth;
3959 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3961 op = ofpbuf_put_zeros(b, sizeof *op);
3962 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3963 op->length = htons(sizeof *op + sizeof *eth);
3964 op->hw_addr = pp->hw_addr;
3965 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3966 op->config = htonl(pp->config & OFPPC11_ALL);
3967 op->state = htonl(pp->state & OFPPS11_ALL);
3969 eth = ofpbuf_put_zeros(b, sizeof *eth);
3970 eth->type = htons(OFPPDPT14_ETHERNET);
3971 eth->length = htons(sizeof *eth);
3972 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3973 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3974 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3975 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3976 eth->curr_speed = htonl(pp->curr_speed);
3977 eth->max_speed = htonl(pp->max_speed);
3981 ofputil_put_phy_port(enum ofp_version ofp_version,
3982 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3984 switch (ofp_version) {
3985 case OFP10_VERSION: {
3986 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3987 ofputil_encode_ofp10_phy_port(pp, opp);
3993 case OFP13_VERSION: {
3994 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3995 ofputil_encode_ofp11_port(pp, op);
4001 ofputil_put_ofp14_port(pp, b);
4010 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
4016 ofpbuf_use_const(&b, request, ntohs(request->length));
4017 raw = ofpraw_pull_assert(&b);
4018 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4021 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4022 ovs_be32 *ofp11_port;
4024 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4025 return ofputil_port_from_ofp11(*ofp11_port, port);
4032 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4035 struct ofpbuf *request;
4037 switch (ofp_version) {
4043 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4046 case OFP15_VERSION:{
4047 struct ofp15_port_desc_request *req;
4048 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4050 req = ofpbuf_put_zeros(request, sizeof *req);
4051 req->port_no = ofputil_port_to_ofp11(port);
4062 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4063 struct ovs_list *replies)
4065 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4066 size_t start_ofs = reply->size;
4068 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4069 ofpmp_postappend(replies, start_ofs);
4072 /* ofputil_switch_features */
4074 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4075 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4076 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4077 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4078 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4079 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4080 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4081 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4084 ofputil_capabilities_mask(enum ofp_version ofp_version)
4086 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4087 switch (ofp_version) {
4090 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4095 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4097 /* Caller needs to check osf->header.version itself */
4102 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4103 * abstract representation in '*features'. Initializes '*b' to iterate over
4104 * the OpenFlow port structures following 'osf' with later calls to
4105 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4106 * OFPERR_* value. */
4108 ofputil_decode_switch_features(const struct ofp_header *oh,
4109 struct ofputil_switch_features *features,
4112 const struct ofp_switch_features *osf;
4115 ofpbuf_use_const(b, oh, ntohs(oh->length));
4116 raw = ofpraw_pull_assert(b);
4118 osf = ofpbuf_pull(b, sizeof *osf);
4119 features->datapath_id = ntohll(osf->datapath_id);
4120 features->n_buffers = ntohl(osf->n_buffers);
4121 features->n_tables = osf->n_tables;
4122 features->auxiliary_id = 0;
4124 features->capabilities = ntohl(osf->capabilities) &
4125 ofputil_capabilities_mask(oh->version);
4127 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4128 if (osf->capabilities & htonl(OFPC10_STP)) {
4129 features->capabilities |= OFPUTIL_C_STP;
4131 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4133 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4134 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4135 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4136 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4138 features->ofpacts = 0;
4139 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4140 features->auxiliary_id = osf->auxiliary_id;
4143 return OFPERR_OFPBRC_BAD_VERSION;
4149 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4150 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4151 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4153 * Given a buffer 'b' that contains a Features Reply message, this message
4154 * checks if it contains a complete list of the switch's ports. Returns true,
4155 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4156 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4159 * When this function returns false, the caller should send an OFPST_PORT_DESC
4160 * stats request to get the ports. */
4162 ofputil_switch_features_has_ports(struct ofpbuf *b)
4164 struct ofp_header *oh = b->data;
4165 size_t phy_port_size;
4167 if (oh->version >= OFP13_VERSION) {
4168 /* OpenFlow 1.3+ never has ports in the feature reply. */
4172 phy_port_size = (oh->version == OFP10_VERSION
4173 ? sizeof(struct ofp10_phy_port)
4174 : sizeof(struct ofp11_port));
4175 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4176 /* There's room for additional ports in the feature reply.
4177 * Assume that the list is complete. */
4181 /* The feature reply has no room for more ports. Probably the list is
4182 * truncated. Drop the ports and tell the caller to retrieve them with
4183 * OFPST_PORT_DESC. */
4184 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4185 ofpmsg_update_length(b);
4189 /* Returns a buffer owned by the caller that encodes 'features' in the format
4190 * required by 'protocol' with the given 'xid'. The caller should append port
4191 * information to the buffer with subsequent calls to
4192 * ofputil_put_switch_features_port(). */
4194 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4195 enum ofputil_protocol protocol, ovs_be32 xid)
4197 struct ofp_switch_features *osf;
4199 enum ofp_version version;
4202 version = ofputil_protocol_to_ofp_version(protocol);
4205 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4209 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4214 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4219 b = ofpraw_alloc_xid(raw, version, xid, 0);
4220 osf = ofpbuf_put_zeros(b, sizeof *osf);
4221 osf->datapath_id = htonll(features->datapath_id);
4222 osf->n_buffers = htonl(features->n_buffers);
4223 osf->n_tables = features->n_tables;
4225 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4226 osf->capabilities = htonl(features->capabilities &
4227 ofputil_capabilities_mask(version));
4230 if (features->capabilities & OFPUTIL_C_STP) {
4231 osf->capabilities |= htonl(OFPC10_STP);
4233 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4239 osf->auxiliary_id = features->auxiliary_id;
4243 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4244 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4254 /* Encodes 'pp' into the format required by the switch_features message already
4255 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4256 * and appends the encoded version to 'b'. */
4258 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4261 const struct ofp_header *oh = b->data;
4263 if (oh->version < OFP13_VERSION) {
4264 /* Try adding a port description to the message, but drop it again if
4265 * the buffer overflows. (This possibility for overflow is why
4266 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4267 size_t start_ofs = b->size;
4268 ofputil_put_phy_port(oh->version, pp, b);
4269 if (b->size > UINT16_MAX) {
4270 b->size = start_ofs;
4275 /* ofputil_port_status */
4277 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4278 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4280 ofputil_decode_port_status(const struct ofp_header *oh,
4281 struct ofputil_port_status *ps)
4283 const struct ofp_port_status *ops;
4287 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4288 ofpraw_pull_assert(&b);
4289 ops = ofpbuf_pull(&b, sizeof *ops);
4291 if (ops->reason != OFPPR_ADD &&
4292 ops->reason != OFPPR_DELETE &&
4293 ops->reason != OFPPR_MODIFY) {
4294 return OFPERR_NXBRC_BAD_REASON;
4296 ps->reason = ops->reason;
4298 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4299 ovs_assert(retval != EOF);
4303 /* Converts the abstract form of a "port status" message in '*ps' into an
4304 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4305 * a buffer owned by the caller. */
4307 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4308 enum ofputil_protocol protocol)
4310 struct ofp_port_status *ops;
4312 enum ofp_version version;
4315 version = ofputil_protocol_to_ofp_version(protocol);
4318 raw = OFPRAW_OFPT10_PORT_STATUS;
4324 raw = OFPRAW_OFPT11_PORT_STATUS;
4329 raw = OFPRAW_OFPT14_PORT_STATUS;
4336 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4337 ops = ofpbuf_put_zeros(b, sizeof *ops);
4338 ops->reason = ps->reason;
4339 ofputil_put_phy_port(version, &ps->desc, b);
4340 ofpmsg_update_length(b);
4344 /* ofputil_port_mod */
4347 parse_port_mod_ethernet_property(struct ofpbuf *property,
4348 struct ofputil_port_mod *pm)
4350 struct ofp14_port_mod_prop_ethernet *eth = property->data;
4352 if (property->size != sizeof *eth) {
4353 return OFPERR_OFPBRC_BAD_LEN;
4356 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4360 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4361 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4363 ofputil_decode_port_mod(const struct ofp_header *oh,
4364 struct ofputil_port_mod *pm, bool loose)
4369 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4370 raw = ofpraw_pull_assert(&b);
4372 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4373 const struct ofp10_port_mod *opm = b.data;
4375 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4376 pm->hw_addr = opm->hw_addr;
4377 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4378 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4379 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4380 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4381 const struct ofp11_port_mod *opm = b.data;
4384 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4389 pm->hw_addr = opm->hw_addr;
4390 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4391 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4392 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4393 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4394 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4397 memset(pm, 0, sizeof *pm);
4399 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4404 pm->hw_addr = opm->hw_addr;
4405 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4406 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4408 while (b.size > 0) {
4409 struct ofpbuf property;
4413 error = ofputil_pull_property(&b, &property, &type);
4419 case OFPPMPT14_ETHERNET:
4420 error = parse_port_mod_ethernet_property(&property, pm);
4424 log_property(loose, "unknown port_mod property %"PRIu16, type);
4427 } else if (type == OFPPMPT14_EXPERIMENTER) {
4428 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4430 error = OFPERR_OFPBRC_BAD_TYPE;
4440 return OFPERR_OFPBRC_BAD_TYPE;
4443 pm->config &= pm->mask;
4447 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4448 * message suitable for 'protocol', and returns that encoded form in a buffer
4449 * owned by the caller. */
4451 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4452 enum ofputil_protocol protocol)
4454 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4457 switch (ofp_version) {
4458 case OFP10_VERSION: {
4459 struct ofp10_port_mod *opm;
4461 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4462 opm = ofpbuf_put_zeros(b, sizeof *opm);
4463 opm->port_no = htons(ofp_to_u16(pm->port_no));
4464 opm->hw_addr = pm->hw_addr;
4465 opm->config = htonl(pm->config & OFPPC10_ALL);
4466 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4467 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4473 case OFP13_VERSION: {
4474 struct ofp11_port_mod *opm;
4476 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4477 opm = ofpbuf_put_zeros(b, sizeof *opm);
4478 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4479 opm->hw_addr = pm->hw_addr;
4480 opm->config = htonl(pm->config & OFPPC11_ALL);
4481 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4482 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4486 case OFP15_VERSION: {
4487 struct ofp14_port_mod_prop_ethernet *eth;
4488 struct ofp14_port_mod *opm;
4490 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4491 opm = ofpbuf_put_zeros(b, sizeof *opm);
4492 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4493 opm->hw_addr = pm->hw_addr;
4494 opm->config = htonl(pm->config & OFPPC11_ALL);
4495 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4497 if (pm->advertise) {
4498 eth = ofpbuf_put_zeros(b, sizeof *eth);
4499 eth->type = htons(OFPPMPT14_ETHERNET);
4500 eth->length = htons(sizeof *eth);
4501 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4512 /* Table features. */
4515 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4520 error = ofputil_pull_property(msg, payload, typep);
4521 if (payload && !error) {
4522 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4528 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4533 while (payload->size > 0) {
4537 error = ofputil_pull_property__(payload, NULL, 1, &type);
4541 if (type < CHAR_BIT * sizeof types) {
4542 types |= 1u << type;
4546 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4551 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4554 while (payload->size > 0) {
4555 enum ovs_instruction_type inst;
4559 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4560 * It seems clear that they aren't padded to 8 bytes, though, because
4561 * both standards say that "non-experimenter instructions are 4 bytes"
4562 * and do not mention any padding before the first instruction ID.
4563 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4564 * aligned on an odd 4-byte boundary.)
4566 * Anyway, we just assume they're all glommed together on byte
4568 error = ofputil_pull_property__(payload, NULL, 1, &ofpit);
4573 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4575 *insts |= 1u << inst;
4576 } else if (!loose) {
4584 parse_table_features_next_table(struct ofpbuf *payload,
4585 unsigned long int *next_tables)
4589 memset(next_tables, 0, bitmap_n_bytes(255));
4590 for (i = 0; i < payload->size; i++) {
4591 uint8_t id = ((const uint8_t *) payload->data)[i];
4593 return OFPERR_OFPBPC_BAD_VALUE;
4595 bitmap_set1(next_tables, id);
4601 parse_oxms(struct ofpbuf *payload, bool loose,
4602 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4604 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4605 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4607 while (payload->size > 0) {
4608 const struct mf_field *field;
4612 error = nx_pull_header(payload, &field, &hasmask);
4614 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4615 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4621 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4622 return OFPERR_OFPBMC_BAD_MASK;
4626 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4627 return OFPERR_OFPBMC_BAD_MASK;
4632 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4633 * ofputil_table_features in 'tf'.
4635 * If 'loose' is true, this function ignores properties and values that it does
4636 * not understand, as a controller would want to do when interpreting
4637 * capabilities provided by a switch. If 'loose' is false, this function
4638 * treats unknown properties and values as an error, as a switch would want to
4639 * do when interpreting a configuration request made by a controller.
4641 * A single OpenFlow message can specify features for multiple tables. Calling
4642 * this function multiple times for a single 'msg' iterates through the tables
4643 * in the message. The caller must initially leave 'msg''s layer pointers null
4644 * and not modify them between calls.
4646 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4647 * a positive "enum ofperr" value. */
4649 ofputil_decode_table_features(struct ofpbuf *msg,
4650 struct ofputil_table_features *tf, bool loose)
4652 const struct ofp_header *oh;
4653 struct ofp13_table_features *otf;
4654 struct ofpbuf properties;
4657 memset(tf, 0, sizeof *tf);
4660 ofpraw_pull_assert(msg);
4668 if (msg->size < sizeof *otf) {
4669 return OFPERR_OFPBPC_BAD_LEN;
4673 len = ntohs(otf->length);
4674 if (len < sizeof *otf || len % 8 || len > msg->size) {
4675 return OFPERR_OFPBPC_BAD_LEN;
4677 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4678 ofpbuf_pull(&properties, sizeof *otf);
4680 tf->table_id = otf->table_id;
4681 if (tf->table_id == OFPTT_ALL) {
4682 return OFPERR_OFPTFFC_BAD_TABLE;
4685 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4686 tf->metadata_match = otf->metadata_match;
4687 tf->metadata_write = otf->metadata_write;
4688 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4689 if (oh->version >= OFP14_VERSION) {
4690 uint32_t caps = ntohl(otf->capabilities);
4691 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4692 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4694 tf->supports_eviction = -1;
4695 tf->supports_vacancy_events = -1;
4697 tf->max_entries = ntohl(otf->max_entries);
4699 while (properties.size > 0) {
4700 struct ofpbuf payload;
4704 error = pull_table_feature_property(&properties, &payload, &type);
4709 switch ((enum ofp13_table_feature_prop_type) type) {
4710 case OFPTFPT13_INSTRUCTIONS:
4711 error = parse_instruction_ids(&payload, loose,
4712 &tf->nonmiss.instructions);
4714 case OFPTFPT13_INSTRUCTIONS_MISS:
4715 error = parse_instruction_ids(&payload, loose,
4716 &tf->miss.instructions);
4719 case OFPTFPT13_NEXT_TABLES:
4720 error = parse_table_features_next_table(&payload,
4723 case OFPTFPT13_NEXT_TABLES_MISS:
4724 error = parse_table_features_next_table(&payload, tf->miss.next);
4727 case OFPTFPT13_WRITE_ACTIONS:
4728 error = parse_action_bitmap(&payload, oh->version,
4729 &tf->nonmiss.write.ofpacts);
4731 case OFPTFPT13_WRITE_ACTIONS_MISS:
4732 error = parse_action_bitmap(&payload, oh->version,
4733 &tf->miss.write.ofpacts);
4736 case OFPTFPT13_APPLY_ACTIONS:
4737 error = parse_action_bitmap(&payload, oh->version,
4738 &tf->nonmiss.apply.ofpacts);
4740 case OFPTFPT13_APPLY_ACTIONS_MISS:
4741 error = parse_action_bitmap(&payload, oh->version,
4742 &tf->miss.apply.ofpacts);
4745 case OFPTFPT13_MATCH:
4746 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4748 case OFPTFPT13_WILDCARDS:
4749 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4752 case OFPTFPT13_WRITE_SETFIELD:
4753 error = parse_oxms(&payload, loose,
4754 &tf->nonmiss.write.set_fields, NULL);
4756 case OFPTFPT13_WRITE_SETFIELD_MISS:
4757 error = parse_oxms(&payload, loose,
4758 &tf->miss.write.set_fields, NULL);
4760 case OFPTFPT13_APPLY_SETFIELD:
4761 error = parse_oxms(&payload, loose,
4762 &tf->nonmiss.apply.set_fields, NULL);
4764 case OFPTFPT13_APPLY_SETFIELD_MISS:
4765 error = parse_oxms(&payload, loose,
4766 &tf->miss.apply.set_fields, NULL);
4769 case OFPTFPT13_EXPERIMENTER:
4770 case OFPTFPT13_EXPERIMENTER_MISS:
4772 log_property(loose, "unknown table features property %"PRIu16,
4774 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4782 /* Fix inconsistencies:
4784 * - Turn on 'match' bits that are set in 'mask', because maskable
4785 * fields are matchable.
4787 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4788 * that is arbitrarily maskable can be wildcarded entirely.
4790 * - Turn off 'wildcard' bits that are not in 'match', because a field
4791 * must be matchable for it to be meaningfully wildcarded. */
4792 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4793 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4794 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4799 /* Encodes and returns a request to obtain the table features of a switch.
4800 * The message is encoded for OpenFlow version 'ofp_version'. */
4802 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4804 struct ofpbuf *request = NULL;
4806 switch (ofp_version) {
4810 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4811 "(\'-O OpenFlow13\')");
4815 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4826 put_fields_property(struct ofpbuf *reply,
4827 const struct mf_bitmap *fields,
4828 const struct mf_bitmap *masks,
4829 enum ofp13_table_feature_prop_type property,
4830 enum ofp_version version)
4835 start_ofs = start_property(reply, property);
4836 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4837 nx_put_header(reply, field, version,
4838 masks && bitmap_is_set(masks->bm, field));
4840 end_property(reply, start_ofs);
4844 put_table_action_features(struct ofpbuf *reply,
4845 const struct ofputil_table_action_features *taf,
4846 enum ofp13_table_feature_prop_type actions_type,
4847 enum ofp13_table_feature_prop_type set_fields_type,
4848 int miss_offset, enum ofp_version version)
4852 start_ofs = start_property(reply, actions_type + miss_offset);
4853 put_bitmap_properties(reply,
4854 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4856 end_property(reply, start_ofs);
4858 put_fields_property(reply, &taf->set_fields, NULL,
4859 set_fields_type + miss_offset, version);
4863 put_table_instruction_features(
4864 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4865 int miss_offset, enum ofp_version version)
4870 start_ofs = start_property(reply, OFPTFPT13_INSTRUCTIONS + miss_offset);
4871 put_bitmap_properties(reply,
4872 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4874 end_property(reply, start_ofs);
4876 start_ofs = start_property(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4877 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4878 ofpbuf_put(reply, &table_id, 1);
4880 end_property(reply, start_ofs);
4882 put_table_action_features(reply, &tif->write,
4883 OFPTFPT13_WRITE_ACTIONS,
4884 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4885 put_table_action_features(reply, &tif->apply,
4886 OFPTFPT13_APPLY_ACTIONS,
4887 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4891 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4892 struct ovs_list *replies)
4894 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4895 enum ofp_version version = ofpmp_version(replies);
4896 size_t start_ofs = reply->size;
4897 struct ofp13_table_features *otf;
4899 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4900 otf->table_id = tf->table_id;
4901 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4902 otf->metadata_match = tf->metadata_match;
4903 otf->metadata_write = tf->metadata_write;
4904 if (version >= OFP14_VERSION) {
4905 if (tf->supports_eviction) {
4906 otf->capabilities |= htonl(OFPTC14_EVICTION);
4908 if (tf->supports_vacancy_events) {
4909 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4912 otf->max_entries = htonl(tf->max_entries);
4914 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4915 put_table_instruction_features(reply, &tf->miss, 1, version);
4917 put_fields_property(reply, &tf->match, &tf->mask,
4918 OFPTFPT13_MATCH, version);
4919 put_fields_property(reply, &tf->wildcard, NULL,
4920 OFPTFPT13_WILDCARDS, version);
4922 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4923 otf->length = htons(reply->size - start_ofs);
4924 ofpmp_postappend(replies, start_ofs);
4928 parse_table_desc_eviction_property(struct ofpbuf *property,
4929 struct ofputil_table_desc *td)
4931 struct ofp14_table_mod_prop_eviction *ote = property->data;
4933 if (property->size != sizeof *ote) {
4934 return OFPERR_OFPBPC_BAD_LEN;
4937 td->eviction_flags = ntohl(ote->flags);
4942 parse_table_desc_vacancy_property(struct ofpbuf *property,
4943 struct ofputil_table_desc *td)
4945 struct ofp14_table_mod_prop_vacancy *otv = property->data;
4947 if (property->size != sizeof *otv) {
4948 return OFPERR_OFPBPC_BAD_LEN;
4951 td->table_vacancy.vacancy_down = otv->vacancy_down;
4952 td->table_vacancy.vacancy_up = otv->vacancy_up;
4953 td->table_vacancy.vacancy = otv->vacancy;
4957 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
4958 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
4959 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
4962 ofputil_decode_table_desc(struct ofpbuf *msg,
4963 struct ofputil_table_desc *td,
4964 enum ofp_version version)
4966 struct ofp14_table_desc *otd;
4967 struct ofpbuf properties;
4970 memset(td, 0, sizeof *td);
4973 ofpraw_pull_assert(msg);
4980 otd = ofpbuf_try_pull(msg, sizeof *otd);
4982 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
4983 "leftover bytes at end", msg->size);
4984 return OFPERR_OFPBRC_BAD_LEN;
4987 td->table_id = otd->table_id;
4988 length = ntohs(otd->length);
4989 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
4990 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
4991 "length %"PRIuSIZE, length);
4992 return OFPERR_OFPBRC_BAD_LEN;
4994 length -= sizeof *otd;
4995 ofpbuf_use_const(&properties, ofpbuf_pull(msg, length), length);
4997 td->eviction = ofputil_decode_table_eviction(otd->config, version);
4998 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
4999 td->eviction_flags = UINT32_MAX;
5001 while (properties.size > 0) {
5002 struct ofpbuf payload;
5006 error = ofputil_pull_property(&properties, &payload, &type);
5012 case OFPTMPT14_EVICTION:
5013 error = parse_table_desc_eviction_property(&payload, td);
5016 case OFPTMPT14_VACANCY:
5017 error = parse_table_desc_vacancy_property(&payload, td);
5021 log_property(true, "unknown table_desc property %"PRIu16, type);
5034 /* Encodes and returns a request to obtain description of tables of a switch.
5035 * The message is encoded for OpenFlow version 'ofp_version'. */
5037 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
5039 struct ofpbuf *request = NULL;
5041 if (ofp_version >= OFP14_VERSION) {
5042 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
5045 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
5046 "(\'-O OpenFlow14\')");
5052 /* Function to append Table desc information in a reply list. */
5054 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
5055 struct ovs_list *replies,
5056 enum ofp_version version)
5058 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5060 struct ofp14_table_desc *otd;
5062 start_otd = reply->size;
5063 ofpbuf_put_zeros(reply, sizeof *otd);
5064 if (td->eviction_flags != UINT32_MAX) {
5065 struct ofp14_table_mod_prop_eviction *ote;
5067 ote = ofpbuf_put_zeros(reply, sizeof *ote);
5068 ote->type = htons(OFPTMPT14_EVICTION);
5069 ote->length = htons(sizeof *ote);
5070 ote->flags = htonl(td->eviction_flags);
5072 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5073 struct ofp14_table_mod_prop_vacancy *otv;
5075 otv = ofpbuf_put_zeros(reply, sizeof *otv);
5076 otv->type = htons(OFPTMPT14_VACANCY);
5077 otv->length = htons(sizeof *otv);
5078 otv->vacancy_down = td->table_vacancy.vacancy_down;
5079 otv->vacancy_up = td->table_vacancy.vacancy_up;
5080 otv->vacancy = td->table_vacancy.vacancy;
5083 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5084 otd->length = htons(reply->size - start_otd);
5085 otd->table_id = td->table_id;
5086 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5087 td->eviction, td->vacancy,
5089 ofpmp_postappend(replies, start_otd);
5092 /* This function parses Vacancy property, and decodes the
5093 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5094 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5095 * greater than vacancy_up and also when current vacancy has non-zero
5096 * value. Returns 0 on success. */
5098 parse_table_mod_vacancy_property(struct ofpbuf *property,
5099 struct ofputil_table_mod *tm)
5101 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5103 if (property->size != sizeof *otv) {
5104 return OFPERR_OFPBPC_BAD_LEN;
5106 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5107 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5108 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5109 log_property(false, "Value of vacancy_down is greater than "
5111 return OFPERR_OFPBPC_BAD_VALUE;
5113 if (tm->table_vacancy.vacancy_down > 100 ||
5114 tm->table_vacancy.vacancy_up > 100) {
5115 log_property(false, "Vacancy threshold percentage should not be"
5116 "greater than 100");
5117 return OFPERR_OFPBPC_BAD_VALUE;
5119 tm->table_vacancy.vacancy = otv->vacancy;
5120 if (tm->table_vacancy.vacancy) {
5121 log_property(false, "Vacancy value should be zero for table-mod "
5123 return OFPERR_OFPBPC_BAD_VALUE;
5128 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5129 * table configuration (a table mod, table stats, or table features message),
5130 * returns the table vacancy configuration that it specifies.
5132 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5133 * so for other 'version' this function always returns
5134 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5135 static enum ofputil_table_vacancy
5136 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5138 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5139 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5140 : OFPUTIL_TABLE_VACANCY_OFF);
5144 parse_table_mod_eviction_property(struct ofpbuf *property,
5145 struct ofputil_table_mod *tm)
5147 struct ofp14_table_mod_prop_eviction *ote = property->data;
5149 if (property->size != sizeof *ote) {
5150 return OFPERR_OFPBPC_BAD_LEN;
5153 tm->eviction_flags = ntohl(ote->flags);
5157 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5158 * table configuration (a table mod, table stats, or table features message),
5159 * returns the table eviction configuration that it specifies.
5161 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5162 * so for other 'version' values this function always returns
5163 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5164 static enum ofputil_table_eviction
5165 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5167 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5168 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5169 : OFPUTIL_TABLE_EVICTION_OFF);
5172 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5173 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5174 * 'eviction' values. */
5176 ofputil_encode_table_config(enum ofputil_table_miss miss,
5177 enum ofputil_table_eviction eviction,
5178 enum ofputil_table_vacancy vacancy,
5179 enum ofp_version version)
5181 uint32_t config = 0;
5182 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5183 * information on the crazy evolution of this field. */
5186 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5191 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5193 case OFPUTIL_TABLE_MISS_DEFAULT:
5194 /* Really this shouldn't be used for encoding (the caller should
5195 * provide a specific value) but I can't imagine that defaulting to
5196 * the fall-through case here will hurt. */
5197 case OFPUTIL_TABLE_MISS_CONTROLLER:
5199 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5200 case OFPUTIL_TABLE_MISS_CONTINUE:
5201 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5202 case OFPUTIL_TABLE_MISS_DROP:
5203 return htonl(OFPTC11_TABLE_MISS_DROP);
5208 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5209 * flags, so this is correct. */
5214 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5215 * OFPTC14_VACANCY_EVENTS. */
5216 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5217 config |= OFPTC14_EVICTION;
5219 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5220 config |= OFPTC14_VACANCY_EVENTS;
5222 return htonl(config);
5228 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5229 * table configuration (a table mod, table stats, or table features message),
5230 * returns the table miss configuration that it specifies.
5232 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5233 * other 'version' values this function always returns
5234 * OFPUTIL_TABLE_MISS_DEFAULT. */
5235 static enum ofputil_table_miss
5236 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5238 uint32_t config = ntohl(config_);
5240 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5241 switch (config & OFPTC11_TABLE_MISS_MASK) {
5242 case OFPTC11_TABLE_MISS_CONTROLLER:
5243 return OFPUTIL_TABLE_MISS_CONTROLLER;
5245 case OFPTC11_TABLE_MISS_CONTINUE:
5246 return OFPUTIL_TABLE_MISS_CONTINUE;
5248 case OFPTC11_TABLE_MISS_DROP:
5249 return OFPUTIL_TABLE_MISS_DROP;
5252 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5253 return OFPUTIL_TABLE_MISS_CONTROLLER;
5256 return OFPUTIL_TABLE_MISS_DEFAULT;
5260 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5261 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5263 ofputil_decode_table_mod(const struct ofp_header *oh,
5264 struct ofputil_table_mod *pm)
5269 memset(pm, 0, sizeof *pm);
5270 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5271 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5272 pm->eviction_flags = UINT32_MAX;
5273 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5274 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5275 raw = ofpraw_pull_assert(&b);
5277 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5278 const struct ofp11_table_mod *otm = b.data;
5280 pm->table_id = otm->table_id;
5281 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5282 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5283 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5285 pm->table_id = otm->table_id;
5286 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5287 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5288 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5289 while (b.size > 0) {
5290 struct ofpbuf property;
5294 error = ofputil_pull_property(&b, &property, &type);
5300 case OFPTMPT14_EVICTION:
5301 error = parse_table_mod_eviction_property(&property, pm);
5304 case OFPTMPT14_VACANCY:
5305 error = parse_table_mod_vacancy_property(&property, pm);
5309 error = OFPERR_OFPBRC_BAD_TYPE;
5318 return OFPERR_OFPBRC_BAD_TYPE;
5324 /* Converts the abstract form of a "table mod" message in '*tm' into an
5325 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5326 * buffer owned by the caller. */
5328 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5329 enum ofputil_protocol protocol)
5331 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5334 switch (ofp_version) {
5335 case OFP10_VERSION: {
5336 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5337 "(\'-O OpenFlow11\')");
5342 case OFP13_VERSION: {
5343 struct ofp11_table_mod *otm;
5345 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5346 otm = ofpbuf_put_zeros(b, sizeof *otm);
5347 otm->table_id = tm->table_id;
5348 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5349 tm->vacancy, ofp_version);
5353 case OFP15_VERSION: {
5354 struct ofp14_table_mod *otm;
5355 struct ofp14_table_mod_prop_eviction *ote;
5356 struct ofp14_table_mod_prop_vacancy *otv;
5358 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5359 otm = ofpbuf_put_zeros(b, sizeof *otm);
5360 otm->table_id = tm->table_id;
5361 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5362 tm->vacancy, ofp_version);
5364 if (tm->eviction_flags != UINT32_MAX) {
5365 ote = ofpbuf_put_zeros(b, sizeof *ote);
5366 ote->type = htons(OFPTMPT14_EVICTION);
5367 ote->length = htons(sizeof *ote);
5368 ote->flags = htonl(tm->eviction_flags);
5370 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5371 otv = ofpbuf_put_zeros(b, sizeof *otv);
5372 otv->type = htons(OFPTMPT14_VACANCY);
5373 otv->length = htons(sizeof *otv);
5374 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5375 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5386 /* ofputil_role_request */
5388 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5389 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5390 * OFPERR_* value. */
5392 ofputil_decode_role_message(const struct ofp_header *oh,
5393 struct ofputil_role_request *rr)
5398 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5399 raw = ofpraw_pull_assert(&b);
5401 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5402 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5403 const struct ofp12_role_request *orr = b.msg;
5405 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5406 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5407 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5408 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5409 return OFPERR_OFPRRFC_BAD_ROLE;
5412 rr->role = ntohl(orr->role);
5413 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5414 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5415 : orr->generation_id == OVS_BE64_MAX) {
5416 rr->have_generation_id = false;
5417 rr->generation_id = 0;
5419 rr->have_generation_id = true;
5420 rr->generation_id = ntohll(orr->generation_id);
5422 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5423 raw == OFPRAW_NXT_ROLE_REPLY) {
5424 const struct nx_role_request *nrr = b.msg;
5426 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5427 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5428 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5430 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5431 nrr->role != htonl(NX_ROLE_MASTER) &&
5432 nrr->role != htonl(NX_ROLE_SLAVE)) {
5433 return OFPERR_OFPRRFC_BAD_ROLE;
5436 rr->role = ntohl(nrr->role) + 1;
5437 rr->have_generation_id = false;
5438 rr->generation_id = 0;
5446 /* Returns an encoded form of a role reply suitable for the "request" in a
5447 * buffer owned by the caller. */
5449 ofputil_encode_role_reply(const struct ofp_header *request,
5450 const struct ofputil_role_request *rr)
5455 raw = ofpraw_decode_assert(request);
5456 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5457 struct ofp12_role_request *orr;
5459 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5460 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5462 orr->role = htonl(rr->role);
5463 orr->generation_id = htonll(rr->have_generation_id
5466 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5467 struct nx_role_request *nrr;
5469 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5470 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5471 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5473 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5474 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5475 nrr->role = htonl(rr->role - 1);
5483 /* Encodes "role status" message 'status' for sending in the given
5484 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5485 * otherwise a null pointer. */
5487 ofputil_encode_role_status(const struct ofputil_role_status *status,
5488 enum ofputil_protocol protocol)
5490 enum ofp_version version;
5492 version = ofputil_protocol_to_ofp_version(protocol);
5493 if (version >= OFP14_VERSION) {
5494 struct ofp14_role_status *rstatus;
5497 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5499 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5500 rstatus->role = htonl(status->role);
5501 rstatus->reason = status->reason;
5502 rstatus->generation_id = htonll(status->generation_id);
5511 ofputil_decode_role_status(const struct ofp_header *oh,
5512 struct ofputil_role_status *rs)
5516 const struct ofp14_role_status *r;
5518 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5519 raw = ofpraw_pull_assert(&b);
5520 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5523 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5524 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5525 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5526 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5527 return OFPERR_OFPRRFC_BAD_ROLE;
5530 rs->role = ntohl(r->role);
5531 rs->generation_id = ntohll(r->generation_id);
5532 rs->reason = r->reason;
5537 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5538 * 'protocol' must be for OpenFlow 1.4 or later. */
5540 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5541 enum ofputil_protocol protocol)
5543 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5544 struct ofpbuf *inner;
5546 switch (rf->reason) {
5547 case OFPRFR_GROUP_MOD:
5548 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5551 case OFPRFR_METER_MOD:
5552 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5555 case OFPRFR_N_REASONS:
5560 struct ofp_header *inner_oh = inner->data;
5561 inner_oh->xid = rf->xid;
5562 inner_oh->length = htons(inner->size);
5564 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5565 ofp_version, htonl(0),
5567 ofpbuf_put(outer, inner->data, inner->size);
5568 ofpbuf_delete(inner);
5573 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5574 * form into '*rf' and returns 0, and the caller is later responsible for
5575 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5576 * failure, returns an ofperr and '*rf' is indeterminate. */
5578 ofputil_decode_requestforward(const struct ofp_header *outer,
5579 struct ofputil_requestforward *rf)
5584 ofpbuf_use_const(&b, outer, ntohs(outer->length));
5586 /* Skip past outer message. */
5587 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5588 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5590 /* Validate inner message. */
5591 if (b.size < sizeof(struct ofp_header)) {
5592 return OFPERR_OFPBFC_MSG_BAD_LEN;
5594 const struct ofp_header *inner = b.data;
5595 unsigned int inner_len = ntohs(inner->length);
5596 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5597 return OFPERR_OFPBFC_MSG_BAD_LEN;
5599 if (inner->version != outer->version) {
5600 return OFPERR_OFPBRC_BAD_VERSION;
5603 /* Parse inner message. */
5605 error = ofptype_decode(&type, inner);
5610 rf->xid = inner->xid;
5611 if (type == OFPTYPE_GROUP_MOD) {
5612 rf->reason = OFPRFR_GROUP_MOD;
5613 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5614 error = ofputil_decode_group_mod(inner, rf->group_mod);
5616 free(rf->group_mod);
5619 } else if (type == OFPTYPE_METER_MOD) {
5620 rf->reason = OFPRFR_METER_MOD;
5621 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5622 ofpbuf_init(&rf->bands, 64);
5623 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5625 free(rf->meter_mod);
5626 ofpbuf_uninit(&rf->bands);
5630 return OFPERR_OFPBFC_MSG_UNSUP;
5636 /* Frees the content of 'rf', which should have been initialized through a
5637 * successful call to ofputil_decode_requestforward(). */
5639 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5645 switch (rf->reason) {
5646 case OFPRFR_GROUP_MOD:
5647 ofputil_uninit_group_mod(rf->group_mod);
5648 free(rf->group_mod);
5651 case OFPRFR_METER_MOD:
5652 ofpbuf_uninit(&rf->bands);
5653 free(rf->meter_mod);
5656 case OFPRFR_N_REASONS:
5663 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5664 * matched and a field that must be wildcarded. This function returns a bitmap
5665 * that contains both kinds of fields. */
5666 static struct mf_bitmap
5667 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5669 struct mf_bitmap wc = features->match;
5670 bitmap_not(wc.bm, MFF_N_IDS);
5671 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5675 struct ofp10_wc_map {
5676 enum ofp10_flow_wildcards wc10;
5677 enum mf_field_id mf;
5680 static const struct ofp10_wc_map ofp10_wc_map[] = {
5681 { OFPFW10_IN_PORT, MFF_IN_PORT },
5682 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5683 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5684 { OFPFW10_DL_DST, MFF_ETH_DST},
5685 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5686 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5687 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5688 { OFPFW10_TP_DST, MFF_TCP_DST },
5689 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5690 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5691 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5692 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5696 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5698 const struct ofp10_wc_map *p;
5701 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5702 if (bitmap_is_set(fields->bm, p->mf)) {
5709 static struct mf_bitmap
5710 mf_bitmap_from_of10(ovs_be32 wc10_)
5712 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5713 const struct ofp10_wc_map *p;
5714 uint32_t wc10 = ntohl(wc10_);
5716 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5717 if (wc10 & p->wc10) {
5718 bitmap_set1(fields.bm, p->mf);
5725 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5726 const struct ofputil_table_features *features,
5729 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5730 struct ofp10_table_stats *out;
5732 out = ofpbuf_put_zeros(buf, sizeof *out);
5733 out->table_id = features->table_id;
5734 ovs_strlcpy(out->name, features->name, sizeof out->name);
5735 out->wildcards = mf_bitmap_to_of10(&wc);
5736 out->max_entries = htonl(features->max_entries);
5737 out->active_count = htonl(stats->active_count);
5738 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5739 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5742 struct ofp11_wc_map {
5743 enum ofp11_flow_match_fields wc11;
5744 enum mf_field_id mf;
5747 static const struct ofp11_wc_map ofp11_wc_map[] = {
5748 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5749 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5750 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5751 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5752 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5753 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5754 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5755 { OFPFMF11_TP_DST, MFF_TCP_DST },
5756 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5757 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5758 /* I don't know what OFPFMF11_TYPE means. */
5759 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5760 { OFPFMF11_DL_DST, MFF_ETH_DST },
5761 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5762 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5763 { OFPFMF11_METADATA, MFF_METADATA },
5767 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5769 const struct ofp11_wc_map *p;
5772 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5773 if (bitmap_is_set(fields->bm, p->mf)) {
5780 static struct mf_bitmap
5781 mf_bitmap_from_of11(ovs_be32 wc11_)
5783 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5784 const struct ofp11_wc_map *p;
5785 uint32_t wc11 = ntohl(wc11_);
5787 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5788 if (wc11 & p->wc11) {
5789 bitmap_set1(fields.bm, p->mf);
5796 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5797 const struct ofputil_table_features *features,
5800 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5801 struct ofp11_table_stats *out;
5803 out = ofpbuf_put_zeros(buf, sizeof *out);
5804 out->table_id = features->table_id;
5805 ovs_strlcpy(out->name, features->name, sizeof out->name);
5806 out->wildcards = mf_bitmap_to_of11(&wc);
5807 out->match = mf_bitmap_to_of11(&features->match);
5808 out->instructions = ovsinst_bitmap_to_openflow(
5809 features->nonmiss.instructions, OFP11_VERSION);
5810 out->write_actions = ofpact_bitmap_to_openflow(
5811 features->nonmiss.write.ofpacts, OFP11_VERSION);
5812 out->apply_actions = ofpact_bitmap_to_openflow(
5813 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5814 out->config = htonl(features->miss_config);
5815 out->max_entries = htonl(features->max_entries);
5816 out->active_count = htonl(stats->active_count);
5817 out->lookup_count = htonll(stats->lookup_count);
5818 out->matched_count = htonll(stats->matched_count);
5822 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5823 const struct ofputil_table_features *features,
5826 struct ofp12_table_stats *out;
5828 out = ofpbuf_put_zeros(buf, sizeof *out);
5829 out->table_id = features->table_id;
5830 ovs_strlcpy(out->name, features->name, sizeof out->name);
5831 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5832 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5834 out->write_actions = ofpact_bitmap_to_openflow(
5835 features->nonmiss.write.ofpacts, OFP12_VERSION);
5836 out->apply_actions = ofpact_bitmap_to_openflow(
5837 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5838 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5839 &features->nonmiss.write.set_fields, OFP12_VERSION);
5840 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5841 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5842 out->metadata_match = features->metadata_match;
5843 out->metadata_write = features->metadata_write;
5844 out->instructions = ovsinst_bitmap_to_openflow(
5845 features->nonmiss.instructions, OFP12_VERSION);
5846 out->config = ofputil_encode_table_config(features->miss_config,
5847 OFPUTIL_TABLE_EVICTION_DEFAULT,
5848 OFPUTIL_TABLE_VACANCY_DEFAULT,
5850 out->max_entries = htonl(features->max_entries);
5851 out->active_count = htonl(stats->active_count);
5852 out->lookup_count = htonll(stats->lookup_count);
5853 out->matched_count = htonll(stats->matched_count);
5857 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5860 struct ofp13_table_stats *out;
5862 out = ofpbuf_put_zeros(buf, sizeof *out);
5863 out->table_id = stats->table_id;
5864 out->active_count = htonl(stats->active_count);
5865 out->lookup_count = htonll(stats->lookup_count);
5866 out->matched_count = htonll(stats->matched_count);
5870 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5872 return ofpraw_alloc_stats_reply(request, 0);
5876 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5877 const struct ofputil_table_stats *stats,
5878 const struct ofputil_table_features *features)
5880 struct ofp_header *oh = reply->header;
5882 ovs_assert(stats->table_id == features->table_id);
5884 switch ((enum ofp_version) oh->version) {
5886 ofputil_put_ofp10_table_stats(stats, features, reply);
5890 ofputil_put_ofp11_table_stats(stats, features, reply);
5894 ofputil_put_ofp12_table_stats(stats, features, reply);
5900 ofputil_put_ofp13_table_stats(stats, reply);
5909 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5910 struct ofputil_table_stats *stats,
5911 struct ofputil_table_features *features)
5913 struct ofp10_table_stats *ots;
5915 ots = ofpbuf_try_pull(msg, sizeof *ots);
5917 return OFPERR_OFPBRC_BAD_LEN;
5920 features->table_id = ots->table_id;
5921 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5922 features->max_entries = ntohl(ots->max_entries);
5923 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5925 stats->table_id = ots->table_id;
5926 stats->active_count = ntohl(ots->active_count);
5927 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5928 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5934 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5935 struct ofputil_table_stats *stats,
5936 struct ofputil_table_features *features)
5938 struct ofp11_table_stats *ots;
5940 ots = ofpbuf_try_pull(msg, sizeof *ots);
5942 return OFPERR_OFPBRC_BAD_LEN;
5945 features->table_id = ots->table_id;
5946 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5947 features->max_entries = ntohl(ots->max_entries);
5948 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5949 ots->instructions, OFP11_VERSION);
5950 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5951 ots->write_actions, OFP11_VERSION);
5952 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5953 ots->write_actions, OFP11_VERSION);
5954 features->miss = features->nonmiss;
5955 features->miss_config = ofputil_decode_table_miss(ots->config,
5957 features->match = mf_bitmap_from_of11(ots->match);
5958 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5959 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5961 stats->table_id = ots->table_id;
5962 stats->active_count = ntohl(ots->active_count);
5963 stats->lookup_count = ntohll(ots->lookup_count);
5964 stats->matched_count = ntohll(ots->matched_count);
5970 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5971 struct ofputil_table_stats *stats,
5972 struct ofputil_table_features *features)
5974 struct ofp12_table_stats *ots;
5976 ots = ofpbuf_try_pull(msg, sizeof *ots);
5978 return OFPERR_OFPBRC_BAD_LEN;
5981 features->table_id = ots->table_id;
5982 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5983 features->metadata_match = ots->metadata_match;
5984 features->metadata_write = ots->metadata_write;
5985 features->miss_config = ofputil_decode_table_miss(ots->config,
5987 features->max_entries = ntohl(ots->max_entries);
5989 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5990 ots->instructions, OFP12_VERSION);
5991 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5992 ots->write_actions, OFP12_VERSION);
5993 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5994 ots->apply_actions, OFP12_VERSION);
5995 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
5996 ots->write_setfields, OFP12_VERSION);
5997 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
5998 ots->apply_setfields, OFP12_VERSION);
5999 features->miss = features->nonmiss;
6001 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
6002 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
6004 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
6006 stats->table_id = ots->table_id;
6007 stats->active_count = ntohl(ots->active_count);
6008 stats->lookup_count = ntohll(ots->lookup_count);
6009 stats->matched_count = ntohll(ots->matched_count);
6015 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
6016 struct ofputil_table_stats *stats,
6017 struct ofputil_table_features *features)
6019 struct ofp13_table_stats *ots;
6021 ots = ofpbuf_try_pull(msg, sizeof *ots);
6023 return OFPERR_OFPBRC_BAD_LEN;
6026 features->table_id = ots->table_id;
6028 stats->table_id = ots->table_id;
6029 stats->active_count = ntohl(ots->active_count);
6030 stats->lookup_count = ntohll(ots->lookup_count);
6031 stats->matched_count = ntohll(ots->matched_count);
6037 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
6038 struct ofputil_table_stats *stats,
6039 struct ofputil_table_features *features)
6041 const struct ofp_header *oh;
6044 ofpraw_pull_assert(msg);
6052 memset(stats, 0, sizeof *stats);
6053 memset(features, 0, sizeof *features);
6054 features->supports_eviction = -1;
6055 features->supports_vacancy_events = -1;
6057 switch ((enum ofp_version) oh->version) {
6059 return ofputil_decode_ofp10_table_stats(msg, stats, features);
6062 return ofputil_decode_ofp11_table_stats(msg, stats, features);
6065 return ofputil_decode_ofp12_table_stats(msg, stats, features);
6070 return ofputil_decode_ofp13_table_stats(msg, stats, features);
6077 /* ofputil_flow_monitor_request */
6079 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
6080 * ofputil_flow_monitor_request in 'rq'.
6082 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6083 * message. Calling this function multiple times for a single 'msg' iterates
6084 * through the requests. The caller must initially leave 'msg''s layer
6085 * pointers null and not modify them between calls.
6087 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6088 * otherwise an OFPERR_* value. */
6090 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6093 struct nx_flow_monitor_request *nfmr;
6097 ofpraw_pull_assert(msg);
6104 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6106 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6107 "leftover bytes at end", msg->size);
6108 return OFPERR_OFPBRC_BAD_LEN;
6111 flags = ntohs(nfmr->flags);
6112 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6113 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6114 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6115 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6117 return OFPERR_OFPMOFC_BAD_FLAGS;
6120 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6121 return OFPERR_NXBRC_MUST_BE_ZERO;
6124 rq->id = ntohl(nfmr->id);
6126 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6127 rq->table_id = nfmr->table_id;
6129 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6133 ofputil_append_flow_monitor_request(
6134 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6136 struct nx_flow_monitor_request *nfmr;
6141 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6144 start_ofs = msg->size;
6145 ofpbuf_put_zeros(msg, sizeof *nfmr);
6146 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6148 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6149 nfmr->id = htonl(rq->id);
6150 nfmr->flags = htons(rq->flags);
6151 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6152 nfmr->match_len = htons(match_len);
6153 nfmr->table_id = rq->table_id;
6156 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6157 * into an abstract ofputil_flow_update in 'update'. The caller must have
6158 * initialized update->match to point to space allocated for a match.
6160 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6161 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6162 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6163 * will point into the 'ofpacts' buffer.
6165 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6166 * this function multiple times for a single 'msg' iterates through the
6167 * updates. The caller must initially leave 'msg''s layer pointers null and
6168 * not modify them between calls.
6170 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6171 * otherwise an OFPERR_* value. */
6173 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6174 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6176 struct nx_flow_update_header *nfuh;
6177 unsigned int length;
6178 struct ofp_header *oh;
6181 ofpraw_pull_assert(msg);
6188 if (msg->size < sizeof(struct nx_flow_update_header)) {
6195 update->event = ntohs(nfuh->event);
6196 length = ntohs(nfuh->length);
6197 if (length > msg->size || length % 8) {
6201 if (update->event == NXFME_ABBREV) {
6202 struct nx_flow_update_abbrev *nfua;
6204 if (length != sizeof *nfua) {
6208 nfua = ofpbuf_pull(msg, sizeof *nfua);
6209 update->xid = nfua->xid;
6211 } else if (update->event == NXFME_ADDED
6212 || update->event == NXFME_DELETED
6213 || update->event == NXFME_MODIFIED) {
6214 struct nx_flow_update_full *nfuf;
6215 unsigned int actions_len;
6216 unsigned int match_len;
6219 if (length < sizeof *nfuf) {
6223 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6224 match_len = ntohs(nfuf->match_len);
6225 if (sizeof *nfuf + match_len > length) {
6229 update->reason = ntohs(nfuf->reason);
6230 update->idle_timeout = ntohs(nfuf->idle_timeout);
6231 update->hard_timeout = ntohs(nfuf->hard_timeout);
6232 update->table_id = nfuf->table_id;
6233 update->cookie = nfuf->cookie;
6234 update->priority = ntohs(nfuf->priority);
6236 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6241 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6242 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6248 update->ofpacts = ofpacts->data;
6249 update->ofpacts_len = ofpacts->size;
6252 VLOG_WARN_RL(&bad_ofmsg_rl,
6253 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6254 ntohs(nfuh->event));
6255 return OFPERR_NXBRC_FM_BAD_EVENT;
6259 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6260 "leftover bytes at end", msg->size);
6261 return OFPERR_OFPBRC_BAD_LEN;
6265 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6267 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6269 return ntohl(cancel->id);
6273 ofputil_encode_flow_monitor_cancel(uint32_t id)
6275 struct nx_flow_monitor_cancel *nfmc;
6278 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6279 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6280 nfmc->id = htonl(id);
6285 ofputil_start_flow_update(struct ovs_list *replies)
6289 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6293 list_push_back(replies, &msg->list_node);
6297 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6298 struct ovs_list *replies)
6300 enum ofp_version version = ofpmp_version(replies);
6301 struct nx_flow_update_header *nfuh;
6305 msg = ofpbuf_from_list(list_back(replies));
6306 start_ofs = msg->size;
6308 if (update->event == NXFME_ABBREV) {
6309 struct nx_flow_update_abbrev *nfua;
6311 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6312 nfua->xid = update->xid;
6314 struct nx_flow_update_full *nfuf;
6317 ofpbuf_put_zeros(msg, sizeof *nfuf);
6318 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6319 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6321 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6322 nfuf->reason = htons(update->reason);
6323 nfuf->priority = htons(update->priority);
6324 nfuf->idle_timeout = htons(update->idle_timeout);
6325 nfuf->hard_timeout = htons(update->hard_timeout);
6326 nfuf->match_len = htons(match_len);
6327 nfuf->table_id = update->table_id;
6328 nfuf->cookie = update->cookie;
6331 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6332 nfuh->length = htons(msg->size - start_ofs);
6333 nfuh->event = htons(update->event);
6335 ofpmp_postappend(replies, start_ofs);
6339 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6340 enum ofputil_protocol protocol)
6342 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6346 size = po->ofpacts_len;
6347 if (po->buffer_id == UINT32_MAX) {
6348 size += po->packet_len;
6351 switch (ofp_version) {
6352 case OFP10_VERSION: {
6353 struct ofp10_packet_out *opo;
6356 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6357 ofpbuf_put_zeros(msg, sizeof *opo);
6358 actions_ofs = msg->size;
6359 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6363 opo->buffer_id = htonl(po->buffer_id);
6364 opo->in_port = htons(ofp_to_u16(po->in_port));
6365 opo->actions_len = htons(msg->size - actions_ofs);
6373 case OFP15_VERSION: {
6374 struct ofp11_packet_out *opo;
6377 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6378 ofpbuf_put_zeros(msg, sizeof *opo);
6379 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6382 opo->buffer_id = htonl(po->buffer_id);
6383 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6384 opo->actions_len = htons(len);
6392 if (po->buffer_id == UINT32_MAX) {
6393 ofpbuf_put(msg, po->packet, po->packet_len);
6396 ofpmsg_update_length(msg);
6401 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6403 make_echo_request(enum ofp_version ofp_version)
6405 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6409 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6410 * OFPT_ECHO_REQUEST message in 'rq'. */
6412 make_echo_reply(const struct ofp_header *rq)
6414 struct ofpbuf rq_buf;
6415 struct ofpbuf *reply;
6417 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6418 ofpraw_pull_assert(&rq_buf);
6420 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
6421 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6426 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6430 switch (ofp_version) {
6436 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6440 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6447 return ofpraw_alloc(type, ofp_version, 0);
6451 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
6453 switch (flags & OFPC_FRAG_MASK) {
6454 case OFPC_FRAG_NORMAL: return "normal";
6455 case OFPC_FRAG_DROP: return "drop";
6456 case OFPC_FRAG_REASM: return "reassemble";
6457 case OFPC_FRAG_NX_MATCH: return "nx-match";
6464 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
6466 if (!strcasecmp(s, "normal")) {
6467 *flags = OFPC_FRAG_NORMAL;
6468 } else if (!strcasecmp(s, "drop")) {
6469 *flags = OFPC_FRAG_DROP;
6470 } else if (!strcasecmp(s, "reassemble")) {
6471 *flags = OFPC_FRAG_REASM;
6472 } else if (!strcasecmp(s, "nx-match")) {
6473 *flags = OFPC_FRAG_NX_MATCH;
6480 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6481 * port number and stores the latter in '*ofp10_port', for the purpose of
6482 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6483 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6485 * See the definition of OFP11_MAX for an explanation of the mapping. */
6487 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6489 uint32_t ofp11_port_h = ntohl(ofp11_port);
6491 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6492 *ofp10_port = u16_to_ofp(ofp11_port_h);
6494 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6495 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6498 *ofp10_port = OFPP_NONE;
6499 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6500 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6501 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6502 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6503 return OFPERR_OFPBAC_BAD_OUT_PORT;
6507 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6508 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6510 * See the definition of OFP11_MAX for an explanation of the mapping. */
6512 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6514 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6515 ? ofp_to_u16(ofp10_port)
6516 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6519 #define OFPUTIL_NAMED_PORTS \
6520 OFPUTIL_NAMED_PORT(IN_PORT) \
6521 OFPUTIL_NAMED_PORT(TABLE) \
6522 OFPUTIL_NAMED_PORT(NORMAL) \
6523 OFPUTIL_NAMED_PORT(FLOOD) \
6524 OFPUTIL_NAMED_PORT(ALL) \
6525 OFPUTIL_NAMED_PORT(CONTROLLER) \
6526 OFPUTIL_NAMED_PORT(LOCAL) \
6527 OFPUTIL_NAMED_PORT(ANY) \
6528 OFPUTIL_NAMED_PORT(UNSET)
6530 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6531 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6532 OFPUTIL_NAMED_PORTS \
6533 OFPUTIL_NAMED_PORT(NONE)
6535 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6536 * integer or, for reserved ports, the standard OpenFlow name for the port
6539 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6540 * or name. The caller should issue an error message in this case, because
6541 * this function usually does not. (This gives the caller an opportunity to
6542 * look up the port name another way, e.g. by contacting the switch and listing
6543 * the names of all its ports).
6545 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6546 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6547 * range as described in include/openflow/openflow-1.1.h. */
6549 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6551 unsigned int port32; /* int is at least 32 bits wide. */
6554 VLOG_WARN("Negative value %s is not a valid port number.", s);
6558 if (str_to_uint(s, 10, &port32)) {
6559 if (port32 < ofp_to_u16(OFPP_MAX)) {
6561 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6562 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6563 "be translated to %u when talking to an OF1.1 or "
6564 "later controller", port32, port32 + OFPP11_OFFSET);
6565 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6566 char name[OFP_MAX_PORT_NAME_LEN];
6568 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6569 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6570 "for compatibility with OpenFlow 1.1 and later",
6572 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6573 VLOG_WARN("port %u is outside the supported range 0 through "
6574 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6575 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6578 port32 -= OFPP11_OFFSET;
6581 *portp = u16_to_ofp(port32);
6588 static const struct pair pairs[] = {
6589 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6590 OFPUTIL_NAMED_PORTS_WITH_NONE
6591 #undef OFPUTIL_NAMED_PORT
6593 const struct pair *p;
6595 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6596 if (!strcasecmp(s, p->name)) {
6605 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6606 * Most ports' string representation is just the port number, but for special
6607 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6609 ofputil_format_port(ofp_port_t port, struct ds *s)
6611 char name[OFP_MAX_PORT_NAME_LEN];
6613 ofputil_port_to_string(port, name, sizeof name);
6614 ds_put_cstr(s, name);
6617 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6618 * representation of OpenFlow port number 'port'. Most ports are represented
6619 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6620 * by name, e.g. "LOCAL". */
6622 ofputil_port_to_string(ofp_port_t port,
6623 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6626 #define OFPUTIL_NAMED_PORT(NAME) \
6628 ovs_strlcpy(namebuf, #NAME, bufsize); \
6631 #undef OFPUTIL_NAMED_PORT
6634 snprintf(namebuf, bufsize, "%"PRIu16, port);
6639 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6640 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6641 * (either "ANY" or "ALL").
6643 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6646 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6648 if (!strcasecmp(s, "any")) {
6649 *group_idp = OFPG_ANY;
6650 } else if (!strcasecmp(s, "all")) {
6651 *group_idp = OFPG_ALL;
6652 } else if (!str_to_uint(s, 10, group_idp)) {
6653 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6654 "32-bit nonnegative integers or the keywords ANY or "
6662 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6663 * Most groups' string representation is just the number, but for special
6664 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6666 ofputil_format_group(uint32_t group_id, struct ds *s)
6668 char name[MAX_GROUP_NAME_LEN];
6670 ofputil_group_to_string(group_id, name, sizeof name);
6671 ds_put_cstr(s, name);
6675 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6676 * representation of OpenFlow group ID 'group_id'. Most group are represented
6677 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6678 * by name, e.g. "ALL". */
6680 ofputil_group_to_string(uint32_t group_id,
6681 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6685 ovs_strlcpy(namebuf, "ALL", bufsize);
6689 ovs_strlcpy(namebuf, "ANY", bufsize);
6693 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6698 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6699 * 'ofp_version', tries to pull the first element from the array. If
6700 * successful, initializes '*pp' with an abstract representation of the
6701 * port and returns 0. If no ports remain to be decoded, returns EOF.
6702 * On an error, returns a positive OFPERR_* value. */
6704 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6705 struct ofputil_phy_port *pp)
6707 memset(pp, 0, sizeof *pp);
6709 switch (ofp_version) {
6710 case OFP10_VERSION: {
6711 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6712 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6716 case OFP13_VERSION: {
6717 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6718 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6722 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6729 ofputil_normalize_match__(struct match *match, bool may_log)
6732 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6733 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6734 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6735 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6736 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6737 MAY_ARP_THA = 1 << 5, /* arp_tha */
6738 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6739 MAY_ND_TARGET = 1 << 7, /* nd_target */
6740 MAY_MPLS = 1 << 8, /* mpls label and tc */
6743 struct flow_wildcards wc;
6745 /* Figure out what fields may be matched. */
6746 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6747 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6748 if (match->flow.nw_proto == IPPROTO_TCP ||
6749 match->flow.nw_proto == IPPROTO_UDP ||
6750 match->flow.nw_proto == IPPROTO_SCTP ||
6751 match->flow.nw_proto == IPPROTO_ICMP) {
6752 may_match |= MAY_TP_ADDR;
6754 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6755 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6756 if (match->flow.nw_proto == IPPROTO_TCP ||
6757 match->flow.nw_proto == IPPROTO_UDP ||
6758 match->flow.nw_proto == IPPROTO_SCTP) {
6759 may_match |= MAY_TP_ADDR;
6760 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6761 may_match |= MAY_TP_ADDR;
6762 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6763 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6764 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6765 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6768 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6769 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6770 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6771 } else if (eth_type_mpls(match->flow.dl_type)) {
6772 may_match = MAY_MPLS;
6777 /* Clear the fields that may not be matched. */
6779 if (!(may_match & MAY_NW_ADDR)) {
6780 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6782 if (!(may_match & MAY_TP_ADDR)) {
6783 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6785 if (!(may_match & MAY_NW_PROTO)) {
6786 wc.masks.nw_proto = 0;
6788 if (!(may_match & MAY_IPVx)) {
6789 wc.masks.nw_tos = 0;
6790 wc.masks.nw_ttl = 0;
6792 if (!(may_match & MAY_ARP_SHA)) {
6793 WC_UNMASK_FIELD(&wc, arp_sha);
6795 if (!(may_match & MAY_ARP_THA)) {
6796 WC_UNMASK_FIELD(&wc, arp_tha);
6798 if (!(may_match & MAY_IPV6)) {
6799 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6800 wc.masks.ipv6_label = htonl(0);
6802 if (!(may_match & MAY_ND_TARGET)) {
6803 wc.masks.nd_target = in6addr_any;
6805 if (!(may_match & MAY_MPLS)) {
6806 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6809 /* Log any changes. */
6810 if (!flow_wildcards_equal(&wc, &match->wc)) {
6811 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6812 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6815 match_zero_wildcarded_fields(match);
6818 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6819 VLOG_INFO("normalization changed ofp_match, details:");
6820 VLOG_INFO(" pre: %s", pre);
6821 VLOG_INFO("post: %s", post);
6828 /* "Normalizes" the wildcards in 'match'. That means:
6830 * 1. If the type of level N is known, then only the valid fields for that
6831 * level may be specified. For example, ARP does not have a TOS field,
6832 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6833 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6834 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6837 * 2. If the type of level N is not known (or not understood by Open
6838 * vSwitch), then no fields at all for that level may be specified. For
6839 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6840 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6843 * If this function changes 'match', it logs a rate-limited informational
6846 ofputil_normalize_match(struct match *match)
6848 ofputil_normalize_match__(match, true);
6851 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6852 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6853 * sense for use on flows received from elsewhere (so that a bug in the program
6854 * that sent them can be reported and corrected). */
6856 ofputil_normalize_match_quiet(struct match *match)
6858 ofputil_normalize_match__(match, false);
6861 /* Parses a key or a key-value pair from '*stringp'.
6863 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6864 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6865 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6866 * are substrings of '*stringp' created by replacing some of its bytes by null
6867 * terminators. Returns true.
6869 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6870 * NULL and returns false. */
6872 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6874 char *pos, *key, *value;
6878 pos += strspn(pos, ", \t\r\n");
6880 *keyp = *valuep = NULL;
6885 key_len = strcspn(pos, ":=(, \t\r\n");
6886 if (key[key_len] == ':' || key[key_len] == '=') {
6887 /* The value can be separated by a colon. */
6890 value = key + key_len + 1;
6891 value_len = strcspn(value, ", \t\r\n");
6892 pos = value + value_len + (value[value_len] != '\0');
6893 value[value_len] = '\0';
6894 } else if (key[key_len] == '(') {
6895 /* The value can be surrounded by balanced parentheses. The outermost
6896 * set of parentheses is removed. */
6900 value = key + key_len + 1;
6901 for (value_len = 0; level > 0; value_len++) {
6902 switch (value[value_len]) {
6916 value[value_len - 1] = '\0';
6917 pos = value + value_len;
6919 /* There might be no value at all. */
6920 value = key + key_len; /* Will become the empty string below. */
6921 pos = key + key_len + (key[key_len] != '\0');
6923 key[key_len] = '\0';
6931 /* Encode a dump ports request for 'port', the encoded message
6932 * will be for OpenFlow version 'ofp_version'. Returns message
6933 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6935 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6937 struct ofpbuf *request;
6939 switch (ofp_version) {
6940 case OFP10_VERSION: {
6941 struct ofp10_port_stats_request *req;
6942 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6943 req = ofpbuf_put_zeros(request, sizeof *req);
6944 req->port_no = htons(ofp_to_u16(port));
6951 case OFP15_VERSION: {
6952 struct ofp11_port_stats_request *req;
6953 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6954 req = ofpbuf_put_zeros(request, sizeof *req);
6955 req->port_no = ofputil_port_to_ofp11(port);
6966 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6967 struct ofp10_port_stats *ps10)
6969 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6970 memset(ps10->pad, 0, sizeof ps10->pad);
6971 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6972 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6973 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6974 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6975 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6976 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6977 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6978 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6979 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6980 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6981 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6982 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6986 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6987 struct ofp11_port_stats *ps11)
6989 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6990 memset(ps11->pad, 0, sizeof ps11->pad);
6991 ps11->rx_packets = htonll(ops->stats.rx_packets);
6992 ps11->tx_packets = htonll(ops->stats.tx_packets);
6993 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6994 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6995 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6996 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6997 ps11->rx_errors = htonll(ops->stats.rx_errors);
6998 ps11->tx_errors = htonll(ops->stats.tx_errors);
6999 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7000 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
7001 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7002 ps11->collisions = htonll(ops->stats.collisions);
7006 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
7007 struct ofp13_port_stats *ps13)
7009 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
7010 ps13->duration_sec = htonl(ops->duration_sec);
7011 ps13->duration_nsec = htonl(ops->duration_nsec);
7015 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
7016 struct ovs_list *replies)
7018 struct ofp14_port_stats_prop_ethernet *eth;
7019 struct ofp14_port_stats *ps14;
7020 struct ofpbuf *reply;
7022 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
7024 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
7025 ps14->length = htons(sizeof *ps14 + sizeof *eth);
7026 memset(ps14->pad, 0, sizeof ps14->pad);
7027 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
7028 ps14->duration_sec = htonl(ops->duration_sec);
7029 ps14->duration_nsec = htonl(ops->duration_nsec);
7030 ps14->rx_packets = htonll(ops->stats.rx_packets);
7031 ps14->tx_packets = htonll(ops->stats.tx_packets);
7032 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
7033 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
7034 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
7035 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
7036 ps14->rx_errors = htonll(ops->stats.rx_errors);
7037 ps14->tx_errors = htonll(ops->stats.tx_errors);
7039 eth = ofpbuf_put_uninit(reply, sizeof *eth);
7040 eth->type = htons(OFPPSPT14_ETHERNET);
7041 eth->length = htons(sizeof *eth);
7042 memset(eth->pad, 0, sizeof eth->pad);
7043 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7044 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
7045 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7046 eth->collisions = htonll(ops->stats.collisions);
7049 /* Encode a ports stat for 'ops' and append it to 'replies'. */
7051 ofputil_append_port_stat(struct ovs_list *replies,
7052 const struct ofputil_port_stats *ops)
7054 switch (ofpmp_version(replies)) {
7055 case OFP13_VERSION: {
7056 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7057 ofputil_port_stats_to_ofp13(ops, reply);
7061 case OFP11_VERSION: {
7062 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7063 ofputil_port_stats_to_ofp11(ops, reply);
7067 case OFP10_VERSION: {
7068 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7069 ofputil_port_stats_to_ofp10(ops, reply);
7075 ofputil_append_ofp14_port_stats(ops, replies);
7084 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7085 const struct ofp10_port_stats *ps10)
7087 memset(ops, 0, sizeof *ops);
7089 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7090 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7091 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7092 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7093 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7094 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7095 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7096 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7097 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7098 ops->stats.rx_frame_errors =
7099 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7100 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7101 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7102 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7103 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7109 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7110 const struct ofp11_port_stats *ps11)
7114 memset(ops, 0, sizeof *ops);
7115 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7120 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7121 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7122 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7123 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7124 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7125 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7126 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7127 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7128 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7129 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7130 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7131 ops->stats.collisions = ntohll(ps11->collisions);
7132 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7138 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7139 const struct ofp13_port_stats *ps13)
7141 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7143 ops->duration_sec = ntohl(ps13->duration_sec);
7144 ops->duration_nsec = ntohl(ps13->duration_nsec);
7150 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7151 struct ofputil_port_stats *ops)
7153 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7155 if (payload->size != sizeof *eth) {
7156 return OFPERR_OFPBPC_BAD_LEN;
7159 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7160 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7161 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7162 ops->stats.collisions = ntohll(eth->collisions);
7168 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7171 const struct ofp14_port_stats *ps14;
7172 struct ofpbuf properties;
7176 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7178 return OFPERR_OFPBRC_BAD_LEN;
7181 len = ntohs(ps14->length);
7182 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7183 return OFPERR_OFPBRC_BAD_LEN;
7185 len -= sizeof *ps14;
7186 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
7188 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7193 ops->duration_sec = ntohl(ps14->duration_sec);
7194 ops->duration_nsec = ntohl(ps14->duration_nsec);
7195 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7196 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7197 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7198 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7199 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7200 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7201 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7202 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7203 ops->stats.rx_frame_errors = UINT64_MAX;
7204 ops->stats.rx_over_errors = UINT64_MAX;
7205 ops->stats.rx_crc_errors = UINT64_MAX;
7206 ops->stats.collisions = UINT64_MAX;
7208 while (properties.size > 0) {
7209 struct ofpbuf payload;
7213 error = ofputil_pull_property(&properties, &payload, &type);
7219 case OFPPSPT14_ETHERNET:
7220 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7224 log_property(true, "unknown port stats property %"PRIu16, type);
7237 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7240 ofputil_count_port_stats(const struct ofp_header *oh)
7242 struct ofputil_port_stats ps;
7246 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7247 ofpraw_pull_assert(&b);
7248 while (!ofputil_decode_port_stats(&ps, &b)) {
7254 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7255 * ofputil_port_stats in 'ps'.
7257 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7258 * message. Calling this function multiple times for a single 'msg' iterates
7259 * through the replies. The caller must initially leave 'msg''s layer pointers
7260 * null and not modify them between calls.
7262 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7263 * otherwise a positive errno value. */
7265 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7270 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7271 : ofpraw_pull(&raw, msg));
7278 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7279 return ofputil_pull_ofp14_port_stats(ps, msg);
7280 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7281 const struct ofp13_port_stats *ps13;
7283 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7287 return ofputil_port_stats_from_ofp13(ps, ps13);
7288 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7289 const struct ofp11_port_stats *ps11;
7291 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7295 return ofputil_port_stats_from_ofp11(ps, ps11);
7296 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7297 const struct ofp10_port_stats *ps10;
7299 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7303 return ofputil_port_stats_from_ofp10(ps, ps10);
7309 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7310 "bytes at end", msg->size);
7311 return OFPERR_OFPBRC_BAD_LEN;
7314 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7315 * port number and stores the latter in '*ofp10_port'.
7316 * Returns 0 if successful, otherwise an OFPERR_* number. */
7318 ofputil_decode_port_stats_request(const struct ofp_header *request,
7319 ofp_port_t *ofp10_port)
7321 switch ((enum ofp_version)request->version) {
7326 case OFP11_VERSION: {
7327 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7328 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7331 case OFP10_VERSION: {
7332 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7333 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7342 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7344 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7346 struct ofputil_bucket *bucket;
7348 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7349 free(bucket->ofpacts);
7354 /* Clones 'bucket' and its ofpacts data */
7355 static struct ofputil_bucket *
7356 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7358 struct ofputil_bucket *new;
7360 new = xmemdup(bucket, sizeof *bucket);
7361 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7366 /* Clones each of the buckets in the list 'src' appending them
7367 * in turn to 'dest' which should be an initialised list.
7368 * An exception is that if the pointer value of a bucket in 'src'
7369 * matches 'skip' then it is not cloned or appended to 'dest'.
7370 * This allows all of 'src' or 'all of 'src' except 'skip' to
7371 * be cloned and appended to 'dest'. */
7373 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7374 const struct ofputil_bucket *skip)
7376 struct ofputil_bucket *bucket;
7378 LIST_FOR_EACH (bucket, list_node, src) {
7379 struct ofputil_bucket *new_bucket;
7381 if (bucket == skip) {
7385 new_bucket = ofputil_bucket_clone_data(bucket);
7386 list_push_back(dest, &new_bucket->list_node);
7390 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7391 * Returns the first bucket found or NULL if no buckets are found. */
7392 struct ofputil_bucket *
7393 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7395 struct ofputil_bucket *bucket;
7397 if (bucket_id > OFPG15_BUCKET_MAX) {
7401 LIST_FOR_EACH (bucket, list_node, buckets) {
7402 if (bucket->bucket_id == bucket_id) {
7410 /* Returns true if more than one bucket in the list 'buckets'
7411 * have the same bucket id. Returns false otherwise. */
7413 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7415 struct ofputil_bucket *i, *j;
7417 LIST_FOR_EACH (i, list_node, buckets) {
7418 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7422 if (i->bucket_id == j->bucket_id) {
7431 /* Returns the bucket at the front of the list 'buckets'.
7432 * Undefined if 'buckets is empty. */
7433 struct ofputil_bucket *
7434 ofputil_bucket_list_front(const struct ovs_list *buckets)
7436 static struct ofputil_bucket *bucket;
7438 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7443 /* Returns the bucket at the back of the list 'buckets'.
7444 * Undefined if 'buckets is empty. */
7445 struct ofputil_bucket *
7446 ofputil_bucket_list_back(const struct ovs_list *buckets)
7448 static struct ofputil_bucket *bucket;
7450 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7455 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7456 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7459 * Group statistics include packet and byte counts for each group. */
7461 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7464 struct ofpbuf *request;
7466 switch (ofp_version) {
7468 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7469 "(\'-O OpenFlow11\')");
7474 case OFP15_VERSION: {
7475 struct ofp11_group_stats_request *req;
7476 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7477 req = ofpbuf_put_zeros(request, sizeof *req);
7478 req->group_id = htonl(group_id);
7489 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7491 ofputil_bucket_list_destroy(&gd->buckets);
7492 free(&gd->props.fields);
7495 /* Decodes the OpenFlow group description request in 'oh', returning the group
7496 * whose description is requested, or OFPG_ALL if stats for all groups was
7499 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7501 struct ofpbuf request;
7504 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7505 raw = ofpraw_pull_assert(&request);
7506 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7508 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7509 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7510 return ntohl(*group_id);
7516 /* Returns an OpenFlow group description request for OpenFlow version
7517 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7518 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7521 * Group descriptions include the bucket and action configuration for each
7524 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7527 struct ofpbuf *request;
7529 switch (ofp_version) {
7531 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7532 "(\'-O OpenFlow11\')");
7537 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7540 case OFP15_VERSION:{
7541 struct ofp15_group_desc_request *req;
7542 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7544 req = ofpbuf_put_zeros(request, sizeof *req);
7545 req->group_id = htonl(group_id);
7556 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7557 struct ofp11_bucket_counter bucket_cnts[])
7561 for (i = 0; i < gs->n_buckets; i++) {
7562 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7563 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7568 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7569 struct ofp11_group_stats *gs11, size_t length,
7570 struct ofp11_bucket_counter bucket_cnts[])
7572 memset(gs11, 0, sizeof *gs11);
7573 gs11->length = htons(length);
7574 gs11->group_id = htonl(gs->group_id);
7575 gs11->ref_count = htonl(gs->ref_count);
7576 gs11->packet_count = htonll(gs->packet_count);
7577 gs11->byte_count = htonll(gs->byte_count);
7578 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7582 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7583 struct ofp13_group_stats *gs13, size_t length,
7584 struct ofp11_bucket_counter bucket_cnts[])
7586 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7587 gs13->duration_sec = htonl(gs->duration_sec);
7588 gs13->duration_nsec = htonl(gs->duration_nsec);
7592 /* Encodes 'gs' properly for the format of the list of group statistics
7593 * replies already begun in 'replies' and appends it to the list. 'replies'
7594 * must have originally been initialized with ofpmp_init(). */
7596 ofputil_append_group_stats(struct ovs_list *replies,
7597 const struct ofputil_group_stats *gs)
7599 size_t bucket_counter_size;
7600 struct ofp11_bucket_counter *bucket_counters;
7603 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7605 switch (ofpmp_version(replies)) {
7607 case OFP12_VERSION:{
7608 struct ofp11_group_stats *gs11;
7610 length = sizeof *gs11 + bucket_counter_size;
7611 gs11 = ofpmp_append(replies, length);
7612 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7613 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7619 case OFP15_VERSION: {
7620 struct ofp13_group_stats *gs13;
7622 length = sizeof *gs13 + bucket_counter_size;
7623 gs13 = ofpmp_append(replies, length);
7624 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7625 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7634 /* Returns an OpenFlow group features request for OpenFlow version
7637 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7639 struct ofpbuf *request = NULL;
7641 switch (ofp_version) {
7644 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7645 "(\'-O OpenFlow12\')");
7650 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7660 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7661 * group features request 'request'. */
7663 ofputil_encode_group_features_reply(
7664 const struct ofputil_group_features *features,
7665 const struct ofp_header *request)
7667 struct ofp12_group_features_stats *ogf;
7668 struct ofpbuf *reply;
7671 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7672 request->version, request->xid, 0);
7673 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7674 ogf->types = htonl(features->types);
7675 ogf->capabilities = htonl(features->capabilities);
7676 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7677 ogf->max_groups[i] = htonl(features->max_groups[i]);
7678 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7685 /* Decodes group features reply 'oh' into 'features'. */
7687 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7688 struct ofputil_group_features *features)
7690 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7693 features->types = ntohl(ogf->types);
7694 features->capabilities = ntohl(ogf->capabilities);
7695 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7696 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7697 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7698 ogf->actions[i], oh->version);
7702 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7703 * group ID and stores the latter in '*group_id'.
7704 * Returns 0 if successful, otherwise an OFPERR_* number. */
7706 ofputil_decode_group_stats_request(const struct ofp_header *request,
7709 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7710 *group_id = ntohl(gsr11->group_id);
7714 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7715 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7716 * caller to eventually free.
7718 * Multiple group stats replies can be packed into a single OpenFlow message.
7719 * Calling this function multiple times for a single 'msg' iterates through the
7720 * replies. The caller must initially leave 'msg''s layer pointers null and
7721 * not modify them between calls.
7723 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7724 * otherwise a positive errno value. */
7726 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7727 struct ofputil_group_stats *gs)
7729 struct ofp11_bucket_counter *obc;
7730 struct ofp11_group_stats *ogs11;
7737 gs->bucket_stats = NULL;
7738 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7739 : ofpraw_pull(&raw, msg));
7748 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7749 base_len = sizeof *ogs11;
7750 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7751 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7752 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7753 struct ofp13_group_stats *ogs13;
7755 base_len = sizeof *ogs13;
7756 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7759 gs->duration_sec = ntohl(ogs13->duration_sec);
7760 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7769 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7770 ofpraw_get_name(raw), msg->size);
7771 return OFPERR_OFPBRC_BAD_LEN;
7773 length = ntohs(ogs11->length);
7774 if (length < sizeof base_len) {
7775 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7776 ofpraw_get_name(raw), length);
7777 return OFPERR_OFPBRC_BAD_LEN;
7780 gs->group_id = ntohl(ogs11->group_id);
7781 gs->ref_count = ntohl(ogs11->ref_count);
7782 gs->packet_count = ntohll(ogs11->packet_count);
7783 gs->byte_count = ntohll(ogs11->byte_count);
7785 gs->n_buckets = (length - base_len) / sizeof *obc;
7786 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7788 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7789 ofpraw_get_name(raw), msg->size);
7790 return OFPERR_OFPBRC_BAD_LEN;
7793 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7794 for (i = 0; i < gs->n_buckets; i++) {
7795 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7796 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7803 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7804 struct ofpbuf *openflow, enum ofp_version ofp_version)
7806 struct ofp11_bucket *ob;
7809 start = openflow->size;
7810 ofpbuf_put_zeros(openflow, sizeof *ob);
7811 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7812 openflow, ofp_version);
7813 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7814 ob->len = htons(openflow->size - start);
7815 ob->weight = htons(bucket->weight);
7816 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7817 ob->watch_group = htonl(bucket->watch_group);
7821 ofputil_put_ofp15_group_bucket_prop_weight(ovs_be16 weight,
7822 struct ofpbuf *openflow)
7825 struct ofp15_group_bucket_prop_weight *prop;
7827 start_ofs = start_property(openflow, OFPGBPT15_WEIGHT);
7828 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7829 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7830 prop->weight = weight;
7831 end_property(openflow, start_ofs);
7835 ofputil_put_ofp15_group_bucket_prop_watch(ovs_be32 watch, uint16_t type,
7836 struct ofpbuf *openflow)
7839 struct ofp15_group_bucket_prop_watch *prop;
7841 start_ofs = start_property(openflow, type);
7842 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7843 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7844 prop->watch = watch;
7845 end_property(openflow, start_ofs);
7849 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7850 uint32_t bucket_id, enum ofp11_group_type group_type,
7851 struct ofpbuf *openflow, enum ofp_version ofp_version)
7853 struct ofp15_bucket *ob;
7854 size_t start, actions_start, actions_len;
7856 start = openflow->size;
7857 ofpbuf_put_zeros(openflow, sizeof *ob);
7859 actions_start = openflow->size;
7860 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7861 openflow, ofp_version);
7862 actions_len = openflow->size - actions_start;
7864 if (group_type == OFPGT11_SELECT) {
7865 ofputil_put_ofp15_group_bucket_prop_weight(htons(bucket->weight),
7868 if (bucket->watch_port != OFPP_ANY) {
7869 ovs_be32 port = ofputil_port_to_ofp11(bucket->watch_port);
7870 ofputil_put_ofp15_group_bucket_prop_watch(port,
7871 OFPGBPT15_WATCH_PORT,
7874 if (bucket->watch_group != OFPG_ANY) {
7875 ovs_be32 group = htonl(bucket->watch_group);
7876 ofputil_put_ofp15_group_bucket_prop_watch(group,
7877 OFPGBPT15_WATCH_GROUP,
7881 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7882 ob->len = htons(openflow->size - start);
7883 ob->action_array_len = htons(actions_len);
7884 ob->bucket_id = htonl(bucket_id);
7888 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7889 const struct ofputil_group_props *gp,
7890 struct ofpbuf *openflow)
7892 struct ntr_group_prop_selection_method *prop;
7895 start = openflow->size;
7896 ofpbuf_put_zeros(openflow, sizeof *prop);
7897 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7898 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7899 prop->type = htons(OFPGPT15_EXPERIMENTER);
7900 prop->experimenter = htonl(NTR_VENDOR_ID);
7901 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7902 strcpy(prop->selection_method, gp->selection_method);
7903 prop->selection_method_param = htonll(gp->selection_method_param);
7904 end_property(openflow, start);
7908 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7909 const struct ovs_list *buckets,
7910 struct ovs_list *replies,
7911 enum ofp_version version)
7913 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7914 struct ofp11_group_desc_stats *ogds;
7915 struct ofputil_bucket *bucket;
7918 start_ogds = reply->size;
7919 ofpbuf_put_zeros(reply, sizeof *ogds);
7920 LIST_FOR_EACH (bucket, list_node, buckets) {
7921 ofputil_put_ofp11_bucket(bucket, reply, version);
7923 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7924 ogds->length = htons(reply->size - start_ogds);
7925 ogds->type = gds->type;
7926 ogds->group_id = htonl(gds->group_id);
7928 ofpmp_postappend(replies, start_ogds);
7932 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
7933 const struct ovs_list *buckets,
7934 struct ovs_list *replies,
7935 enum ofp_version version)
7937 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7938 struct ofp15_group_desc_stats *ogds;
7939 struct ofputil_bucket *bucket;
7940 size_t start_ogds, start_buckets;
7942 start_ogds = reply->size;
7943 ofpbuf_put_zeros(reply, sizeof *ogds);
7944 start_buckets = reply->size;
7945 LIST_FOR_EACH (bucket, list_node, buckets) {
7946 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
7947 gds->type, reply, version);
7949 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7950 ogds->type = gds->type;
7951 ogds->group_id = htonl(gds->group_id);
7952 ogds->bucket_list_len = htons(reply->size - start_buckets);
7954 /* Add group properties */
7955 if (gds->props.selection_method[0]) {
7956 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
7959 ogds->length = htons(reply->size - start_ogds);
7961 ofpmp_postappend(replies, start_ogds);
7964 /* Appends a group stats reply that contains the data in 'gds' to those already
7965 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7966 * initialized with ofpmp_init(). */
7968 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7969 const struct ovs_list *buckets,
7970 struct ovs_list *replies)
7972 enum ofp_version version = ofpmp_version(replies);
7980 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
7984 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
7994 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
7995 enum ofp_version version, struct ovs_list *buckets)
7997 struct ofp11_bucket *ob;
7998 uint32_t bucket_id = 0;
8001 while (buckets_length > 0) {
8002 struct ofputil_bucket *bucket;
8003 struct ofpbuf ofpacts;
8007 ob = (buckets_length >= sizeof *ob
8008 ? ofpbuf_try_pull(msg, sizeof *ob)
8011 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
8013 return OFPERR_OFPGMFC_BAD_BUCKET;
8016 ob_len = ntohs(ob->len);
8017 if (ob_len < sizeof *ob) {
8018 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8019 "%"PRIuSIZE" is not valid", ob_len);
8020 return OFPERR_OFPGMFC_BAD_BUCKET;
8021 } else if (ob_len > buckets_length) {
8022 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8023 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
8024 ob_len, buckets_length);
8025 return OFPERR_OFPGMFC_BAD_BUCKET;
8027 buckets_length -= ob_len;
8029 ofpbuf_init(&ofpacts, 0);
8030 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
8033 ofpbuf_uninit(&ofpacts);
8034 ofputil_bucket_list_destroy(buckets);
8038 bucket = xzalloc(sizeof *bucket);
8039 bucket->weight = ntohs(ob->weight);
8040 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
8042 ofpbuf_uninit(&ofpacts);
8043 ofputil_bucket_list_destroy(buckets);
8044 return OFPERR_OFPGMFC_BAD_WATCH;
8046 bucket->watch_group = ntohl(ob->watch_group);
8047 bucket->bucket_id = bucket_id++;
8049 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8050 bucket->ofpacts_len = ofpacts.size;
8051 list_push_back(buckets, &bucket->list_node);
8058 parse_ofp15_group_bucket_prop_weight(const struct ofpbuf *payload,
8061 struct ofp15_group_bucket_prop_weight *prop = payload->data;
8063 if (payload->size != sizeof *prop) {
8064 log_property(false, "OpenFlow bucket weight property length "
8065 "%u is not valid", payload->size);
8066 return OFPERR_OFPBPC_BAD_LEN;
8069 *weight = prop->weight;
8075 parse_ofp15_group_bucket_prop_watch(const struct ofpbuf *payload,
8078 struct ofp15_group_bucket_prop_watch *prop = payload->data;
8080 if (payload->size != sizeof *prop) {
8081 log_property(false, "OpenFlow bucket watch port or group "
8082 "property length %u is not valid", payload->size);
8083 return OFPERR_OFPBPC_BAD_LEN;
8086 *watch = prop->watch;
8092 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
8093 enum ofp_version version, uint8_t group_type,
8094 struct ovs_list *buckets)
8096 struct ofp15_bucket *ob;
8099 while (buckets_length > 0) {
8100 struct ofputil_bucket *bucket = NULL;
8101 struct ofpbuf ofpacts;
8102 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
8103 struct ofpbuf properties;
8104 size_t ob_len, actions_len, properties_len;
8105 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
8106 ovs_be32 watch_group = htonl(OFPG_ANY);
8107 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
8109 ofpbuf_init(&ofpacts, 0);
8111 ob = ofpbuf_try_pull(msg, sizeof *ob);
8113 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
8114 " leftover bytes", buckets_length);
8118 ob_len = ntohs(ob->len);
8119 actions_len = ntohs(ob->action_array_len);
8121 if (ob_len < sizeof *ob) {
8122 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8123 "%"PRIuSIZE" is not valid", ob_len);
8125 } else if (ob_len > buckets_length) {
8126 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8127 "%"PRIuSIZE" exceeds remaining buckets data size %"
8128 PRIuSIZE, ob_len, buckets_length);
8130 } else if (actions_len > ob_len - sizeof *ob) {
8131 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
8132 "length %"PRIuSIZE" exceeds remaining bucket "
8133 "data size %"PRIuSIZE, actions_len,
8134 ob_len - sizeof *ob);
8137 buckets_length -= ob_len;
8139 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
8145 properties_len = ob_len - sizeof *ob - actions_len;
8146 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8149 while (properties.size > 0) {
8150 struct ofpbuf payload;
8153 err = ofputil_pull_property(&properties, &payload, &type);
8159 case OFPGBPT15_WEIGHT:
8160 err = parse_ofp15_group_bucket_prop_weight(&payload, &weight);
8163 case OFPGBPT15_WATCH_PORT:
8164 err = parse_ofp15_group_bucket_prop_watch(&payload,
8168 case OFPGBPT15_WATCH_GROUP:
8169 err = parse_ofp15_group_bucket_prop_watch(&payload,
8174 log_property(false, "unknown group bucket property %"PRIu16,
8176 err = OFPERR_OFPBPC_BAD_TYPE;
8185 bucket = xzalloc(sizeof *bucket);
8187 bucket->weight = ntohs(weight);
8188 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8190 err = OFPERR_OFPGMFC_BAD_WATCH;
8193 bucket->watch_group = ntohl(watch_group);
8194 bucket->bucket_id = ntohl(ob->bucket_id);
8195 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8196 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8198 err = OFPERR_OFPGMFC_BAD_BUCKET;
8202 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8203 bucket->ofpacts_len = ofpacts.size;
8204 list_push_back(buckets, &bucket->list_node);
8210 ofpbuf_uninit(&ofpacts);
8211 ofputil_bucket_list_destroy(buckets);
8215 if (ofputil_bucket_check_duplicate_id(buckets)) {
8216 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8217 ofputil_bucket_list_destroy(buckets);
8218 return OFPERR_OFPGMFC_BAD_BUCKET;
8225 ofputil_init_group_properties(struct ofputil_group_props *gp)
8227 memset(gp, 0, sizeof *gp);
8231 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8232 enum ofp11_group_type group_type,
8233 enum ofp15_group_mod_command group_cmd,
8234 struct ofputil_group_props *gp)
8236 struct ntr_group_prop_selection_method *prop = payload->data;
8237 size_t fields_len, method_len;
8240 switch (group_type) {
8241 case OFPGT11_SELECT:
8244 case OFPGT11_INDIRECT:
8246 log_property(false, "ntr selection method property is only allowed "
8247 "for select groups");
8248 return OFPERR_OFPBPC_BAD_VALUE;
8253 switch (group_cmd) {
8255 case OFPGC15_MODIFY:
8257 case OFPGC15_DELETE:
8258 case OFPGC15_INSERT_BUCKET:
8259 case OFPGC15_REMOVE_BUCKET:
8260 log_property(false, "ntr selection method property is only allowed "
8261 "for add and delete group modifications");
8262 return OFPERR_OFPBPC_BAD_VALUE;
8267 if (payload->size < sizeof *prop) {
8268 log_property(false, "ntr selection method property length "
8269 "%u is not valid", payload->size);
8270 return OFPERR_OFPBPC_BAD_LEN;
8273 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8275 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8276 log_property(false, "ntr selection method is not null terminated");
8277 return OFPERR_OFPBPC_BAD_VALUE;
8280 if (strcmp("hash", prop->selection_method)) {
8281 log_property(false, "ntr selection method '%s' is not supported",
8282 prop->selection_method);
8283 return OFPERR_OFPBPC_BAD_VALUE;
8286 strcpy(gp->selection_method, prop->selection_method);
8287 gp->selection_method_param = ntohll(prop->selection_method_param);
8289 if (!method_len && gp->selection_method_param) {
8290 log_property(false, "ntr selection method parameter is non-zero but "
8291 "selection method is empty");
8292 return OFPERR_OFPBPC_BAD_VALUE;
8295 ofpbuf_pull(payload, sizeof *prop);
8297 fields_len = ntohs(prop->length) - sizeof *prop;
8298 if (!method_len && fields_len) {
8299 log_property(false, "ntr selection method parameter is zero "
8300 "but fields are provided");
8301 return OFPERR_OFPBPC_BAD_VALUE;
8304 error = oxm_pull_field_array(payload->data, fields_len,
8307 log_property(false, "ntr selection method fields are invalid");
8315 parse_group_prop_ntr(struct ofpbuf *payload, uint32_t exp_type,
8316 enum ofp11_group_type group_type,
8317 enum ofp15_group_mod_command group_cmd,
8318 struct ofputil_group_props *gp)
8323 case NTRT_SELECTION_METHOD:
8324 error = parse_group_prop_ntr_selection_method(payload, group_type,
8329 log_property(false, "unknown group property ntr experimenter type "
8330 "%"PRIu32, exp_type);
8331 error = OFPERR_OFPBPC_BAD_TYPE;
8339 parse_ofp15_group_prop_exp(struct ofpbuf *payload,
8340 enum ofp11_group_type group_type,
8341 enum ofp15_group_mod_command group_cmd,
8342 struct ofputil_group_props *gp)
8344 struct ofp_prop_experimenter *prop = payload->data;
8345 uint16_t experimenter;
8349 if (payload->size < sizeof *prop) {
8350 return OFPERR_OFPBPC_BAD_LEN;
8353 experimenter = ntohl(prop->experimenter);
8354 exp_type = ntohl(prop->exp_type);
8356 switch (experimenter) {
8358 case NTR_COMPAT_VENDOR_ID:
8359 error = parse_group_prop_ntr(payload, exp_type, group_type,
8364 log_property(false, "unknown group property experimenter %"PRIu16,
8366 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
8374 parse_ofp15_group_properties(struct ofpbuf *msg,
8375 enum ofp11_group_type group_type,
8376 enum ofp15_group_mod_command group_cmd,
8377 struct ofputil_group_props *gp,
8378 size_t properties_len)
8380 struct ofpbuf properties;
8382 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8385 while (properties.size > 0) {
8386 struct ofpbuf payload;
8390 error = ofputil_pull_property(&properties, &payload, &type);
8396 case OFPGPT15_EXPERIMENTER:
8397 error = parse_ofp15_group_prop_exp(&payload, group_type,
8402 log_property(false, "unknown group property %"PRIu16, type);
8403 error = OFPERR_OFPBPC_BAD_TYPE;
8416 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8418 enum ofp_version version)
8420 struct ofp11_group_desc_stats *ogds;
8424 ofpraw_pull_assert(msg);
8431 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8433 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8434 "leftover bytes at end", msg->size);
8435 return OFPERR_OFPBRC_BAD_LEN;
8437 gd->type = ogds->type;
8438 gd->group_id = ntohl(ogds->group_id);
8440 length = ntohs(ogds->length);
8441 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8442 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8443 "length %"PRIuSIZE, length);
8444 return OFPERR_OFPBRC_BAD_LEN;
8447 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8452 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8454 enum ofp_version version)
8456 struct ofp15_group_desc_stats *ogds;
8457 uint16_t length, bucket_list_len;
8461 ofpraw_pull_assert(msg);
8468 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8470 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8471 "leftover bytes at end", msg->size);
8472 return OFPERR_OFPBRC_BAD_LEN;
8474 gd->type = ogds->type;
8475 gd->group_id = ntohl(ogds->group_id);
8477 length = ntohs(ogds->length);
8478 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8479 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8480 "length %u", length);
8481 return OFPERR_OFPBRC_BAD_LEN;
8484 bucket_list_len = ntohs(ogds->bucket_list_len);
8485 if (length < bucket_list_len + sizeof *ogds) {
8486 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8487 "bucket list length %u", bucket_list_len);
8488 return OFPERR_OFPBRC_BAD_LEN;
8490 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8496 /* By definition group desc messages don't have a group mod command.
8497 * However, parse_group_prop_ntr_selection_method() checks to make sure
8498 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8499 * against group mod messages with other commands supplying
8500 * a NTR selection method group experimenter property.
8501 * Such properties are valid for group desc replies so
8502 * claim that the group mod command is OFPGC15_ADD to
8503 * satisfy the check in parse_group_prop_ntr_selection_method() */
8504 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8505 length - sizeof *ogds - bucket_list_len);
8508 /* Converts a group description reply in 'msg' into an abstract
8509 * ofputil_group_desc in 'gd'.
8511 * Multiple group description replies can be packed into a single OpenFlow
8512 * message. Calling this function multiple times for a single 'msg' iterates
8513 * through the replies. The caller must initially leave 'msg''s layer pointers
8514 * null and not modify them between calls.
8516 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8517 * otherwise a positive errno value. */
8519 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8520 struct ofpbuf *msg, enum ofp_version version)
8522 ofputil_init_group_properties(&gd->props);
8530 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8533 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8542 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8544 ofputil_bucket_list_destroy(&gm->buckets);
8547 static struct ofpbuf *
8548 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8549 const struct ofputil_group_mod *gm)
8552 struct ofp11_group_mod *ogm;
8554 struct ofputil_bucket *bucket;
8556 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8557 start_ogm = b->size;
8558 ofpbuf_put_zeros(b, sizeof *ogm);
8560 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8561 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8563 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8564 ogm->command = htons(gm->command);
8565 ogm->type = gm->type;
8566 ogm->group_id = htonl(gm->group_id);
8571 static struct ofpbuf *
8572 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8573 const struct ofputil_group_mod *gm)
8576 struct ofp15_group_mod *ogm;
8578 struct ofputil_bucket *bucket;
8579 struct id_pool *bucket_ids = NULL;
8581 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8582 start_ogm = b->size;
8583 ofpbuf_put_zeros(b, sizeof *ogm);
8585 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8588 /* Generate a bucket id if none was supplied */
8589 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8591 const struct ofputil_bucket *bkt;
8593 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8595 /* Mark all bucket_ids that are present in gm
8596 * as used in the pool. */
8597 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8598 if (bkt == bucket) {
8601 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8602 id_pool_add(bucket_ids, bkt->bucket_id);
8607 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8611 bucket_id = bucket->bucket_id;
8614 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8616 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8617 ogm->command = htons(gm->command);
8618 ogm->type = gm->type;
8619 ogm->group_id = htonl(gm->group_id);
8620 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8621 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8623 /* Add group properties */
8624 if (gm->props.selection_method[0]) {
8625 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8628 id_pool_destroy(bucket_ids);
8633 bad_group_cmd(enum ofp15_group_mod_command cmd)
8635 const char *opt_version;
8636 const char *version;
8637 const char *cmd_str;
8641 case OFPGC15_MODIFY:
8642 case OFPGC15_DELETE:
8647 case OFPGC15_INSERT_BUCKET:
8648 case OFPGC15_REMOVE_BUCKET:
8659 cmd_str = "add-group";
8662 case OFPGC15_MODIFY:
8663 cmd_str = "mod-group";
8666 case OFPGC15_DELETE:
8667 cmd_str = "del-group";
8670 case OFPGC15_INSERT_BUCKET:
8671 cmd_str = "insert-bucket";
8674 case OFPGC15_REMOVE_BUCKET:
8675 cmd_str = "remove-bucket";
8682 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8683 cmd_str, version, opt_version);
8687 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8688 * 'ofp_version' and returns the message. */
8690 ofputil_encode_group_mod(enum ofp_version ofp_version,
8691 const struct ofputil_group_mod *gm)
8694 switch (ofp_version) {
8696 bad_group_cmd(gm->command);
8702 if (gm->command > OFPGC11_DELETE) {
8703 bad_group_cmd(gm->command);
8705 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8708 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8716 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8717 struct ofputil_group_mod *gm)
8719 const struct ofp11_group_mod *ogm;
8722 ogm = ofpbuf_pull(msg, sizeof *ogm);
8723 gm->command = ntohs(ogm->command);
8724 gm->type = ogm->type;
8725 gm->group_id = ntohl(ogm->group_id);
8726 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8728 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8731 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8733 && ofp_version >= OFP13_VERSION
8734 && gm->command == OFPGC11_DELETE
8735 && !list_is_empty(&gm->buckets)) {
8736 error = OFPERR_OFPGMFC_INVALID_GROUP;
8743 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8744 struct ofputil_group_mod *gm)
8746 const struct ofp15_group_mod *ogm;
8747 uint16_t bucket_list_len;
8748 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8750 ogm = ofpbuf_pull(msg, sizeof *ogm);
8751 gm->command = ntohs(ogm->command);
8752 gm->type = ogm->type;
8753 gm->group_id = ntohl(ogm->group_id);
8755 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8756 switch (gm->command) {
8757 case OFPGC15_REMOVE_BUCKET:
8758 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8762 case OFPGC15_INSERT_BUCKET:
8763 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8764 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8765 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8771 case OFPGC11_MODIFY:
8772 case OFPGC11_DELETE:
8774 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8780 VLOG_WARN_RL(&bad_ofmsg_rl,
8781 "group command bucket id (%u) is out of range",
8782 gm->command_bucket_id);
8783 return OFPERR_OFPGMFC_BAD_BUCKET;
8786 bucket_list_len = ntohs(ogm->bucket_array_len);
8787 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8788 gm->type, &gm->buckets);
8793 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8797 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8798 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8800 ofputil_decode_group_mod(const struct ofp_header *oh,
8801 struct ofputil_group_mod *gm)
8803 enum ofp_version ofp_version = oh->version;
8805 struct ofputil_bucket *bucket;
8808 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
8809 ofpraw_pull_assert(&msg);
8811 ofputil_init_group_properties(&gm->props);
8813 switch (ofp_version)
8819 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8823 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8836 case OFPGT11_INDIRECT:
8837 if (!list_is_singleton(&gm->buckets)) {
8838 return OFPERR_OFPGMFC_INVALID_GROUP;
8842 case OFPGT11_SELECT:
8846 return OFPERR_OFPGMFC_BAD_TYPE;
8849 switch (gm->command) {
8851 case OFPGC11_MODIFY:
8852 case OFPGC11_DELETE:
8853 case OFPGC15_INSERT_BUCKET:
8855 case OFPGC15_REMOVE_BUCKET:
8856 if (!list_is_empty(&gm->buckets)) {
8857 return OFPERR_OFPGMFC_BAD_BUCKET;
8861 return OFPERR_OFPGMFC_BAD_COMMAND;
8864 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8865 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8866 return OFPERR_OFPGMFC_INVALID_GROUP;
8871 case OFPGT11_INDIRECT:
8872 if (ofputil_bucket_has_liveness(bucket)) {
8873 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8876 case OFPGT11_SELECT:
8879 if (!ofputil_bucket_has_liveness(bucket)) {
8880 return OFPERR_OFPGMFC_INVALID_GROUP;
8884 /* Returning BAD TYPE to be consistent
8885 * though gm->type has been checked already. */
8886 return OFPERR_OFPGMFC_BAD_TYPE;
8893 /* Parse a queue status request message into 'oqsr'.
8894 * Returns 0 if successful, otherwise an OFPERR_* number. */
8896 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8897 struct ofputil_queue_stats_request *oqsr)
8899 switch ((enum ofp_version)request->version) {
8904 case OFP11_VERSION: {
8905 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8906 oqsr->queue_id = ntohl(qsr11->queue_id);
8907 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8910 case OFP10_VERSION: {
8911 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8912 oqsr->queue_id = ntohl(qsr10->queue_id);
8913 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8914 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
8915 if (oqsr->port_no == OFPP_ALL) {
8916 oqsr->port_no = OFPP_ANY;
8926 /* Encode a queue stats request for 'oqsr', the encoded message
8927 * will be for OpenFlow version 'ofp_version'. Returns message
8928 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
8930 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
8931 const struct ofputil_queue_stats_request *oqsr)
8933 struct ofpbuf *request;
8935 switch (ofp_version) {
8940 case OFP15_VERSION: {
8941 struct ofp11_queue_stats_request *req;
8942 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
8943 req = ofpbuf_put_zeros(request, sizeof *req);
8944 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
8945 req->queue_id = htonl(oqsr->queue_id);
8948 case OFP10_VERSION: {
8949 struct ofp10_queue_stats_request *req;
8950 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
8951 req = ofpbuf_put_zeros(request, sizeof *req);
8952 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
8953 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
8954 ? OFPP_ALL : oqsr->port_no));
8955 req->queue_id = htonl(oqsr->queue_id);
8965 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
8968 ofputil_count_queue_stats(const struct ofp_header *oh)
8970 struct ofputil_queue_stats qs;
8974 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8975 ofpraw_pull_assert(&b);
8976 while (!ofputil_decode_queue_stats(&qs, &b)) {
8983 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
8984 const struct ofp10_queue_stats *qs10)
8986 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
8987 oqs->queue_id = ntohl(qs10->queue_id);
8988 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
8989 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
8990 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
8991 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8997 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
8998 const struct ofp11_queue_stats *qs11)
9002 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
9007 oqs->queue_id = ntohl(qs11->queue_id);
9008 oqs->tx_bytes = ntohll(qs11->tx_bytes);
9009 oqs->tx_packets = ntohll(qs11->tx_packets);
9010 oqs->tx_errors = ntohll(qs11->tx_errors);
9011 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
9017 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
9018 const struct ofp13_queue_stats *qs13)
9020 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
9022 oqs->duration_sec = ntohl(qs13->duration_sec);
9023 oqs->duration_nsec = ntohl(qs13->duration_nsec);
9030 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
9033 const struct ofp14_queue_stats *qs14;
9036 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
9038 return OFPERR_OFPBRC_BAD_LEN;
9041 len = ntohs(qs14->length);
9042 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
9043 return OFPERR_OFPBRC_BAD_LEN;
9045 ofpbuf_pull(msg, len - sizeof *qs14);
9047 /* No properties yet defined, so ignore them for now. */
9049 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
9052 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
9053 * ofputil_queue_stats in 'qs'.
9055 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
9056 * message. Calling this function multiple times for a single 'msg' iterates
9057 * through the replies. The caller must initially leave 'msg''s layer pointers
9058 * null and not modify them between calls.
9060 * Returns 0 if successful, EOF if no replies were left in this 'msg',
9061 * otherwise a positive errno value. */
9063 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
9068 error = (msg->header ? ofpraw_decode(&raw, msg->header)
9069 : ofpraw_pull(&raw, msg));
9076 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
9077 return ofputil_pull_ofp14_queue_stats(qs, msg);
9078 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
9079 const struct ofp13_queue_stats *qs13;
9081 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
9085 return ofputil_queue_stats_from_ofp13(qs, qs13);
9086 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
9087 const struct ofp11_queue_stats *qs11;
9089 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
9093 return ofputil_queue_stats_from_ofp11(qs, qs11);
9094 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
9095 const struct ofp10_queue_stats *qs10;
9097 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
9101 return ofputil_queue_stats_from_ofp10(qs, qs10);
9107 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
9108 "bytes at end", msg->size);
9109 return OFPERR_OFPBRC_BAD_LEN;
9113 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
9114 struct ofp10_queue_stats *qs10)
9116 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
9117 memset(qs10->pad, 0, sizeof qs10->pad);
9118 qs10->queue_id = htonl(oqs->queue_id);
9119 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
9120 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
9121 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
9125 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
9126 struct ofp11_queue_stats *qs11)
9128 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
9129 qs11->queue_id = htonl(oqs->queue_id);
9130 qs11->tx_bytes = htonll(oqs->tx_bytes);
9131 qs11->tx_packets = htonll(oqs->tx_packets);
9132 qs11->tx_errors = htonll(oqs->tx_errors);
9136 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
9137 struct ofp13_queue_stats *qs13)
9139 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
9140 if (oqs->duration_sec != UINT32_MAX) {
9141 qs13->duration_sec = htonl(oqs->duration_sec);
9142 qs13->duration_nsec = htonl(oqs->duration_nsec);
9144 qs13->duration_sec = OVS_BE32_MAX;
9145 qs13->duration_nsec = OVS_BE32_MAX;
9150 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
9151 struct ofp14_queue_stats *qs14)
9153 qs14->length = htons(sizeof *qs14);
9154 memset(qs14->pad, 0, sizeof qs14->pad);
9155 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
9159 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
9161 ofputil_append_queue_stat(struct ovs_list *replies,
9162 const struct ofputil_queue_stats *oqs)
9164 switch (ofpmp_version(replies)) {
9165 case OFP13_VERSION: {
9166 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9167 ofputil_queue_stats_to_ofp13(oqs, reply);
9172 case OFP11_VERSION: {
9173 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9174 ofputil_queue_stats_to_ofp11(oqs, reply);
9178 case OFP10_VERSION: {
9179 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9180 ofputil_queue_stats_to_ofp10(oqs, reply);
9185 case OFP15_VERSION: {
9186 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9187 ofputil_queue_stats_to_ofp14(oqs, reply);
9197 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
9198 struct ofputil_bundle_ctrl_msg *msg)
9202 const struct ofp14_bundle_ctrl_msg *m;
9204 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9205 raw = ofpraw_pull_assert(&b);
9206 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
9209 msg->bundle_id = ntohl(m->bundle_id);
9210 msg->type = ntohs(m->type);
9211 msg->flags = ntohs(m->flags);
9217 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9218 struct ofputil_bundle_ctrl_msg *bc)
9220 struct ofpbuf *request;
9221 struct ofp14_bundle_ctrl_msg *m;
9223 switch (ofp_version) {
9228 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9229 "(\'-O OpenFlow14\')");
9232 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9233 m = ofpbuf_put_zeros(request, sizeof *m);
9235 m->bundle_id = htonl(bc->bundle_id);
9236 m->type = htons(bc->type);
9237 m->flags = htons(bc->flags);
9247 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9248 struct ofputil_bundle_ctrl_msg *msg)
9251 struct ofp14_bundle_ctrl_msg *m;
9253 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9254 m = ofpbuf_put_zeros(buf, sizeof *m);
9256 m->bundle_id = htonl(msg->bundle_id);
9257 m->type = htons(msg->type);
9258 m->flags = htons(msg->flags);
9263 /* Return true for bundlable state change requests, false for other messages.
9266 ofputil_is_bundlable(enum ofptype type)
9269 /* Minimum required by OpenFlow 1.4. */
9270 case OFPTYPE_PORT_MOD:
9271 case OFPTYPE_FLOW_MOD:
9274 /* Nice to have later. */
9275 case OFPTYPE_FLOW_MOD_TABLE_ID:
9276 case OFPTYPE_GROUP_MOD:
9277 case OFPTYPE_TABLE_MOD:
9278 case OFPTYPE_METER_MOD:
9279 case OFPTYPE_PACKET_OUT:
9280 case OFPTYPE_NXT_TLV_TABLE_MOD:
9282 /* Not to be bundlable. */
9283 case OFPTYPE_ECHO_REQUEST:
9284 case OFPTYPE_FEATURES_REQUEST:
9285 case OFPTYPE_GET_CONFIG_REQUEST:
9286 case OFPTYPE_SET_CONFIG:
9287 case OFPTYPE_BARRIER_REQUEST:
9288 case OFPTYPE_ROLE_REQUEST:
9289 case OFPTYPE_ECHO_REPLY:
9290 case OFPTYPE_SET_FLOW_FORMAT:
9291 case OFPTYPE_SET_PACKET_IN_FORMAT:
9292 case OFPTYPE_SET_CONTROLLER_ID:
9293 case OFPTYPE_FLOW_AGE:
9294 case OFPTYPE_FLOW_MONITOR_CANCEL:
9295 case OFPTYPE_SET_ASYNC_CONFIG:
9296 case OFPTYPE_GET_ASYNC_REQUEST:
9297 case OFPTYPE_DESC_STATS_REQUEST:
9298 case OFPTYPE_FLOW_STATS_REQUEST:
9299 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9300 case OFPTYPE_TABLE_STATS_REQUEST:
9301 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9302 case OFPTYPE_TABLE_DESC_REQUEST:
9303 case OFPTYPE_PORT_STATS_REQUEST:
9304 case OFPTYPE_QUEUE_STATS_REQUEST:
9305 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9306 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9307 case OFPTYPE_METER_STATS_REQUEST:
9308 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9309 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9310 case OFPTYPE_GROUP_STATS_REQUEST:
9311 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9312 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9313 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9314 case OFPTYPE_BUNDLE_CONTROL:
9315 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9318 case OFPTYPE_FEATURES_REPLY:
9319 case OFPTYPE_GET_CONFIG_REPLY:
9320 case OFPTYPE_PACKET_IN:
9321 case OFPTYPE_FLOW_REMOVED:
9322 case OFPTYPE_PORT_STATUS:
9323 case OFPTYPE_BARRIER_REPLY:
9324 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9325 case OFPTYPE_DESC_STATS_REPLY:
9326 case OFPTYPE_FLOW_STATS_REPLY:
9327 case OFPTYPE_QUEUE_STATS_REPLY:
9328 case OFPTYPE_PORT_STATS_REPLY:
9329 case OFPTYPE_TABLE_STATS_REPLY:
9330 case OFPTYPE_AGGREGATE_STATS_REPLY:
9331 case OFPTYPE_PORT_DESC_STATS_REPLY:
9332 case OFPTYPE_ROLE_REPLY:
9333 case OFPTYPE_FLOW_MONITOR_PAUSED:
9334 case OFPTYPE_FLOW_MONITOR_RESUMED:
9335 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9336 case OFPTYPE_GET_ASYNC_REPLY:
9337 case OFPTYPE_GROUP_STATS_REPLY:
9338 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9339 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9340 case OFPTYPE_METER_STATS_REPLY:
9341 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9342 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9343 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9344 case OFPTYPE_TABLE_DESC_REPLY:
9345 case OFPTYPE_ROLE_STATUS:
9346 case OFPTYPE_REQUESTFORWARD:
9347 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9348 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9356 ofputil_decode_bundle_add(const struct ofp_header *oh,
9357 struct ofputil_bundle_add_msg *msg,
9358 enum ofptype *type_ptr)
9360 const struct ofp14_bundle_ctrl_msg *m;
9367 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9368 raw = ofpraw_pull_assert(&b);
9369 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9371 m = ofpbuf_pull(&b, sizeof *m);
9372 msg->bundle_id = ntohl(m->bundle_id);
9373 msg->flags = ntohs(m->flags);
9376 if (msg->msg->version != oh->version) {
9377 return OFPERR_NXBFC_BAD_VERSION;
9379 inner_len = ntohs(msg->msg->length);
9380 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9381 return OFPERR_OFPBFC_MSG_BAD_LEN;
9383 if (msg->msg->xid != oh->xid) {
9384 return OFPERR_OFPBFC_MSG_BAD_XID;
9387 /* Reject unbundlable messages. */
9391 error = ofptype_decode(type_ptr, msg->msg);
9393 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9394 "message is unparsable (%s)", ofperr_get_name(error));
9395 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9398 if (!ofputil_is_bundlable(*type_ptr)) {
9399 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9400 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(*type_ptr));
9401 return OFPERR_OFPBFC_MSG_UNSUP;
9408 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9409 struct ofputil_bundle_add_msg *msg)
9411 struct ofpbuf *request;
9412 struct ofp14_bundle_ctrl_msg *m;
9414 /* Must use the same xid as the embedded message. */
9415 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9417 m = ofpbuf_put_zeros(request, sizeof *m);
9419 m->bundle_id = htonl(msg->bundle_id);
9420 m->flags = htons(msg->flags);
9421 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9427 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9429 struct ofputil_tlv_map *map;
9431 LIST_FOR_EACH (map, list_node, mappings) {
9432 struct nx_tlv_map *nx_map;
9434 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9435 nx_map->option_class = htons(map->option_class);
9436 nx_map->option_type = map->option_type;
9437 nx_map->option_len = map->option_len;
9438 nx_map->index = htons(map->index);
9443 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9444 struct ofputil_tlv_table_mod *ttm)
9447 struct nx_tlv_table_mod *nx_ttm;
9449 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9450 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9451 nx_ttm->command = htons(ttm->command);
9452 encode_tlv_table_mappings(b, &ttm->mappings);
9458 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9459 struct ovs_list *mappings)
9461 list_init(mappings);
9464 struct nx_tlv_map *nx_map;
9465 struct ofputil_tlv_map *map;
9467 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9468 map = xmalloc(sizeof *map);
9469 list_push_back(mappings, &map->list_node);
9471 map->option_class = ntohs(nx_map->option_class);
9472 map->option_type = nx_map->option_type;
9474 map->option_len = nx_map->option_len;
9475 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9476 VLOG_WARN_RL(&bad_ofmsg_rl,
9477 "tlv table option length (%u) is not a valid option size",
9479 ofputil_uninit_tlv_table(mappings);
9480 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9483 map->index = ntohs(nx_map->index);
9484 if (map->index >= max_fields) {
9485 VLOG_WARN_RL(&bad_ofmsg_rl,
9486 "tlv table field index (%u) is too large (max %u)",
9487 map->index, max_fields - 1);
9488 ofputil_uninit_tlv_table(mappings);
9489 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9497 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9498 struct ofputil_tlv_table_mod *ttm)
9501 struct nx_tlv_table_mod *nx_ttm;
9503 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9504 ofpraw_pull_assert(&msg);
9506 nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9507 ttm->command = ntohs(nx_ttm->command);
9508 if (ttm->command > NXTTMC_CLEAR) {
9509 VLOG_WARN_RL(&bad_ofmsg_rl,
9510 "tlv table mod command (%u) is out of range",
9512 return OFPERR_NXTTMFC_BAD_COMMAND;
9515 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9520 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9521 struct ofputil_tlv_table_reply *ttr)
9524 struct nx_tlv_table_reply *nx_ttr;
9526 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9527 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9528 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9529 nx_ttr->max_fields = htons(ttr->max_fields);
9531 encode_tlv_table_mappings(b, &ttr->mappings);
9536 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9537 * if successful, otherwise an ofperr.
9539 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9540 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9541 * less than TUN_METADATA_NUM_OPTS. */
9543 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9544 struct ofputil_tlv_table_reply *ttr)
9547 struct nx_tlv_table_reply *nx_ttr;
9549 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9550 ofpraw_pull_assert(&msg);
9552 nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9553 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9554 ttr->max_fields = ntohs(nx_ttr->max_fields);
9556 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9560 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9562 struct ofputil_tlv_map *map;
9564 LIST_FOR_EACH_POP (map, list_node, mappings) {
9569 /* Decodes the OpenFlow "set async config" request and "get async config
9570 * reply" message in '*oh' into an abstract form in 'master' and 'slave'.
9572 * If 'loose' is true, this function ignores properties and values that it does
9573 * not understand, as a controller would want to do when interpreting
9574 * capabilities provided by a switch. If 'loose' is false, this function
9575 * treats unknown properties and values as an error, as a switch would want to
9576 * do when interpreting a configuration request made by a controller.
9578 * Returns 0 if successful, otherwise an OFPERR_* value.
9580 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9581 * the valid range of mask.
9583 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9586 ofputil_decode_set_async_config(const struct ofp_header *oh,
9587 uint32_t master[OAM_N_TYPES],
9588 uint32_t slave[OAM_N_TYPES],
9594 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9595 raw = ofpraw_pull_assert(&b);
9597 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9598 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9599 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9600 const struct nx_async_config *msg = ofpmsg_body(oh);
9602 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
9603 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
9604 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
9606 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
9607 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
9608 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
9610 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9611 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY) {
9613 while (b.size > 0) {
9614 struct ofp14_async_config_prop_reasons *msg;
9615 struct ofpbuf property;
9619 error = ofputil_pull_property(&b, &property, &type);
9624 msg = property.data;
9626 if (property.size != sizeof *msg) {
9627 return OFPERR_OFPBRC_BAD_LEN;
9631 error = ofputil_check_mask(type, ntohl(msg->mask));
9638 case OFPACPT_PACKET_IN_SLAVE:
9639 slave[OAM_PACKET_IN] = ntohl(msg->mask);
9642 case OFPACPT_PACKET_IN_MASTER:
9643 master[OAM_PACKET_IN] = ntohl(msg->mask);
9646 case OFPACPT_PORT_STATUS_SLAVE:
9647 slave[OAM_PORT_STATUS] = ntohl(msg->mask);
9650 case OFPACPT_PORT_STATUS_MASTER:
9651 master[OAM_PORT_STATUS] = ntohl(msg->mask);
9654 case OFPACPT_FLOW_REMOVED_SLAVE:
9655 slave[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9658 case OFPACPT_FLOW_REMOVED_MASTER:
9659 master[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9662 case OFPACPT_ROLE_STATUS_SLAVE:
9663 slave[OAM_ROLE_STATUS] = ntohl(msg->mask);
9666 case OFPACPT_ROLE_STATUS_MASTER:
9667 master[OAM_ROLE_STATUS] = ntohl(msg->mask);
9670 case OFPACPT_TABLE_STATUS_SLAVE:
9671 slave[OAM_TABLE_STATUS] = ntohl(msg->mask);
9674 case OFPACPT_TABLE_STATUS_MASTER:
9675 master[OAM_TABLE_STATUS] = ntohl(msg->mask);
9678 case OFPACPT_REQUESTFORWARD_SLAVE:
9679 slave[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9682 case OFPACPT_REQUESTFORWARD_MASTER:
9683 master[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9687 error = loose ? 0 : OFPERR_OFPACFC_UNSUPPORTED;
9692 return OFPERR_OFPBRC_BAD_VERSION;
9697 /* Append all asynchronous configuration properties in GET_ASYNC_REPLY
9698 * message, describing if various set of asynchronous messages are enabled
9701 ofputil_get_async_reply(struct ofpbuf *buf, const uint32_t master_mask,
9702 const uint32_t slave_mask, const uint32_t type)
9706 for (role = 0; role < 2; role++) {
9707 struct ofp14_async_config_prop_reasons *msg;
9709 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9713 msg->type = (role ? htons(OFPACPT_PACKET_IN_SLAVE)
9714 : htons(OFPACPT_PACKET_IN_MASTER));
9717 case OAM_PORT_STATUS:
9718 msg->type = (role ? htons(OFPACPT_PORT_STATUS_SLAVE)
9719 : htons(OFPACPT_PORT_STATUS_MASTER));
9722 case OAM_FLOW_REMOVED:
9723 msg->type = (role ? htons(OFPACPT_FLOW_REMOVED_SLAVE)
9724 : htons(OFPACPT_FLOW_REMOVED_MASTER));
9727 case OAM_ROLE_STATUS:
9728 msg->type = (role ? htons(OFPACPT_ROLE_STATUS_SLAVE)
9729 : htons(OFPACPT_ROLE_STATUS_MASTER));
9732 case OAM_TABLE_STATUS:
9733 msg->type = (role ? htons(OFPACPT_TABLE_STATUS_SLAVE)
9734 : htons(OFPACPT_TABLE_STATUS_MASTER));
9737 case OAM_REQUESTFORWARD:
9738 msg->type = (role ? htons(OFPACPT_REQUESTFORWARD_SLAVE)
9739 : htons(OFPACPT_REQUESTFORWARD_MASTER));
9743 return OFPERR_OFPBRC_BAD_TYPE;
9745 msg->length = htons(sizeof *msg);
9746 msg->mask = (role ? htonl(slave_mask) : htonl(master_mask));
9752 /* Returns a OpenFlow message that encodes 'asynchronous configuration' properly
9753 * as a reply to get async config request. */
9755 ofputil_encode_get_async_config(const struct ofp_header *oh,
9756 uint32_t master[OAM_N_TYPES],
9757 uint32_t slave[OAM_N_TYPES])
9762 buf = ofpraw_alloc_reply((oh->version < OFP14_VERSION
9763 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9764 : OFPRAW_OFPT14_GET_ASYNC_REPLY), oh, 0);
9766 if (oh->version < OFP14_VERSION) {
9767 struct nx_async_config *msg;
9768 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9770 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
9771 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
9772 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
9774 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
9775 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
9776 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
9777 } else if (oh->version == OFP14_VERSION) {
9778 for (type = 0; type < OAM_N_TYPES; type++) {
9779 ofputil_get_async_reply(buf, master[type], slave[type], type);