2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 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;
2038 ofpbuf_put_uninit(msg, sizeof *reply);
2039 ofputil_put_bands(mc->n_bands, mc->bands, msg);
2041 reply = ofpbuf_at_assert(msg, start_ofs, sizeof *reply);
2042 reply->flags = htons(mc->flags);
2043 reply->meter_id = htonl(mc->meter_id);
2044 reply->length = htons(msg->size - start_ofs);
2046 ofpmp_postappend(replies, start_ofs);
2049 /* Encode a meter stat for 'ms' and append it to 'replies'. */
2051 ofputil_append_meter_stats(struct ovs_list *replies,
2052 const struct ofputil_meter_stats *ms)
2054 struct ofp13_meter_stats *reply;
2058 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
2059 reply = ofpmp_append(replies, len);
2061 reply->meter_id = htonl(ms->meter_id);
2062 reply->len = htons(len);
2063 memset(reply->pad, 0, sizeof reply->pad);
2064 reply->flow_count = htonl(ms->flow_count);
2065 reply->packet_in_count = htonll(ms->packet_in_count);
2066 reply->byte_in_count = htonll(ms->byte_in_count);
2067 reply->duration_sec = htonl(ms->duration_sec);
2068 reply->duration_nsec = htonl(ms->duration_nsec);
2070 for (n = 0; n < ms->n_bands; ++n) {
2071 const struct ofputil_meter_band_stats *src = &ms->bands[n];
2072 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
2074 dst->packet_band_count = htonll(src->packet_count);
2075 dst->byte_band_count = htonll(src->byte_count);
2079 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
2080 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
2081 * 'bands'. The caller must have initialized 'bands' and retains ownership of
2082 * it across the call.
2084 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
2085 * message. Calling this function multiple times for a single 'msg' iterates
2086 * through the replies. 'bands' is cleared for each reply.
2088 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2089 * otherwise a positive errno value. */
2091 ofputil_decode_meter_config(struct ofpbuf *msg,
2092 struct ofputil_meter_config *mc,
2093 struct ofpbuf *bands)
2095 const struct ofp13_meter_config *omc;
2098 /* Pull OpenFlow headers for the first call. */
2100 ofpraw_pull_assert(msg);
2107 omc = ofpbuf_try_pull(msg, sizeof *omc);
2109 VLOG_WARN_RL(&bad_ofmsg_rl,
2110 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2112 return OFPERR_OFPBRC_BAD_LEN;
2115 ofpbuf_clear(bands);
2116 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2117 &mc->n_bands, bands);
2121 mc->meter_id = ntohl(omc->meter_id);
2122 mc->flags = ntohs(omc->flags);
2123 mc->bands = bands->data;
2129 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2130 struct ofpbuf *bands)
2132 const struct ofp13_meter_band_stats *ombs;
2133 struct ofputil_meter_band_stats *mbs;
2136 ombs = ofpbuf_try_pull(msg, len);
2138 return OFPERR_OFPBRC_BAD_LEN;
2141 n = len / sizeof *ombs;
2142 if (len != n * sizeof *ombs) {
2143 return OFPERR_OFPBRC_BAD_LEN;
2146 mbs = ofpbuf_put_uninit(bands, len);
2148 for (i = 0; i < n; ++i) {
2149 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2150 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2156 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2157 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2158 * decoded into 'bands'.
2160 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2161 * message. Calling this function multiple times for a single 'msg' iterates
2162 * through the replies. 'bands' is cleared for each reply.
2164 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2165 * otherwise a positive errno value. */
2167 ofputil_decode_meter_stats(struct ofpbuf *msg,
2168 struct ofputil_meter_stats *ms,
2169 struct ofpbuf *bands)
2171 const struct ofp13_meter_stats *oms;
2174 /* Pull OpenFlow headers for the first call. */
2176 ofpraw_pull_assert(msg);
2183 oms = ofpbuf_try_pull(msg, sizeof *oms);
2185 VLOG_WARN_RL(&bad_ofmsg_rl,
2186 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2188 return OFPERR_OFPBRC_BAD_LEN;
2191 ofpbuf_clear(bands);
2192 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2193 &ms->n_bands, bands);
2197 ms->meter_id = ntohl(oms->meter_id);
2198 ms->flow_count = ntohl(oms->flow_count);
2199 ms->packet_in_count = ntohll(oms->packet_in_count);
2200 ms->byte_in_count = ntohll(oms->byte_in_count);
2201 ms->duration_sec = ntohl(oms->duration_sec);
2202 ms->duration_nsec = ntohl(oms->duration_nsec);
2203 ms->bands = bands->data;
2209 ofputil_decode_meter_features(const struct ofp_header *oh,
2210 struct ofputil_meter_features *mf)
2212 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2214 mf->max_meters = ntohl(omf->max_meter);
2215 mf->band_types = ntohl(omf->band_types);
2216 mf->capabilities = ntohl(omf->capabilities);
2217 mf->max_bands = omf->max_bands;
2218 mf->max_color = omf->max_color;
2222 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2223 const struct ofp_header *request)
2225 struct ofpbuf *reply;
2226 struct ofp13_meter_features *omf;
2228 reply = ofpraw_alloc_stats_reply(request, 0);
2229 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2231 omf->max_meter = htonl(mf->max_meters);
2232 omf->band_types = htonl(mf->band_types);
2233 omf->capabilities = htonl(mf->capabilities);
2234 omf->max_bands = mf->max_bands;
2235 omf->max_color = mf->max_color;
2241 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2242 const struct ofputil_meter_mod *mm)
2246 struct ofp13_meter_mod *omm;
2248 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2249 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2250 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2251 omm->command = htons(mm->command);
2252 if (mm->command != OFPMC13_DELETE) {
2253 omm->flags = htons(mm->meter.flags);
2255 omm->meter_id = htonl(mm->meter.meter_id);
2257 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2259 ofpmsg_update_length(msg);
2264 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2265 enum ofputil_protocol protocol)
2267 return htons(protocol & OFPUTIL_P_TID
2268 ? (fm->command & 0xff) | (fm->table_id << 8)
2272 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2273 * 'protocol' and returns the message. */
2275 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2276 enum ofputil_protocol protocol)
2278 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2279 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2283 case OFPUTIL_P_OF11_STD:
2284 case OFPUTIL_P_OF12_OXM:
2285 case OFPUTIL_P_OF13_OXM:
2286 case OFPUTIL_P_OF14_OXM:
2287 case OFPUTIL_P_OF15_OXM: {
2288 struct ofp11_flow_mod *ofm;
2291 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2292 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2293 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2294 if ((protocol == OFPUTIL_P_OF11_STD
2295 && (fm->command == OFPFC_MODIFY ||
2296 fm->command == OFPFC_MODIFY_STRICT)
2297 && fm->cookie_mask == htonll(0))
2298 || fm->command == OFPFC_ADD) {
2299 ofm->cookie = fm->new_cookie;
2301 ofm->cookie = fm->cookie & fm->cookie_mask;
2303 ofm->cookie_mask = fm->cookie_mask;
2304 if (fm->table_id != OFPTT_ALL
2305 || (protocol != OFPUTIL_P_OF11_STD
2306 && (fm->command == OFPFC_DELETE ||
2307 fm->command == OFPFC_DELETE_STRICT))) {
2308 ofm->table_id = fm->table_id;
2312 ofm->command = fm->command;
2313 ofm->idle_timeout = htons(fm->idle_timeout);
2314 ofm->hard_timeout = htons(fm->hard_timeout);
2315 ofm->priority = htons(fm->priority);
2316 ofm->buffer_id = htonl(fm->buffer_id);
2317 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2318 ofm->out_group = htonl(fm->out_group);
2319 ofm->flags = raw_flags;
2320 if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
2321 ofm->importance = htons(fm->importance);
2323 ofm->importance = 0;
2325 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2326 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2331 case OFPUTIL_P_OF10_STD:
2332 case OFPUTIL_P_OF10_STD_TID: {
2333 struct ofp10_flow_mod *ofm;
2335 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2337 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2338 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2339 ofm->cookie = fm->new_cookie;
2340 ofm->command = ofputil_tid_command(fm, protocol);
2341 ofm->idle_timeout = htons(fm->idle_timeout);
2342 ofm->hard_timeout = htons(fm->hard_timeout);
2343 ofm->priority = htons(fm->priority);
2344 ofm->buffer_id = htonl(fm->buffer_id);
2345 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2346 ofm->flags = raw_flags;
2347 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2352 case OFPUTIL_P_OF10_NXM:
2353 case OFPUTIL_P_OF10_NXM_TID: {
2354 struct nx_flow_mod *nfm;
2357 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2358 NXM_TYPICAL_LEN + fm->ofpacts_len);
2359 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2360 nfm->command = ofputil_tid_command(fm, protocol);
2361 nfm->cookie = fm->new_cookie;
2362 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2364 nfm->idle_timeout = htons(fm->idle_timeout);
2365 nfm->hard_timeout = htons(fm->hard_timeout);
2366 nfm->priority = htons(fm->priority);
2367 nfm->buffer_id = htonl(fm->buffer_id);
2368 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2369 nfm->flags = raw_flags;
2370 nfm->match_len = htons(match_len);
2371 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2380 ofpmsg_update_length(msg);
2385 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2386 const struct ofp10_flow_stats_request *ofsr,
2389 fsr->aggregate = aggregate;
2390 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2391 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2392 fsr->out_group = OFPG_ANY;
2393 fsr->table_id = ofsr->table_id;
2394 fsr->cookie = fsr->cookie_mask = htonll(0);
2400 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2401 struct ofpbuf *b, bool aggregate)
2403 const struct ofp11_flow_stats_request *ofsr;
2406 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2407 fsr->aggregate = aggregate;
2408 fsr->table_id = ofsr->table_id;
2409 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2413 fsr->out_group = ntohl(ofsr->out_group);
2414 fsr->cookie = ofsr->cookie;
2415 fsr->cookie_mask = ofsr->cookie_mask;
2416 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2425 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2426 struct ofpbuf *b, bool aggregate)
2428 const struct nx_flow_stats_request *nfsr;
2431 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2432 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2433 &fsr->cookie, &fsr->cookie_mask);
2438 return OFPERR_OFPBRC_BAD_LEN;
2441 fsr->aggregate = aggregate;
2442 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2443 fsr->out_group = OFPG_ANY;
2444 fsr->table_id = nfsr->table_id;
2449 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2450 * 'port', suitable for OpenFlow version 'version'. */
2452 ofputil_encode_queue_get_config_request(enum ofp_version version,
2455 struct ofpbuf *request;
2457 if (version == OFP10_VERSION) {
2458 struct ofp10_queue_get_config_request *qgcr10;
2460 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2462 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2463 qgcr10->port = htons(ofp_to_u16(port));
2465 struct ofp11_queue_get_config_request *qgcr11;
2467 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2469 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2470 qgcr11->port = ofputil_port_to_ofp11(port);
2476 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2477 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2480 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2483 const struct ofp10_queue_get_config_request *qgcr10;
2484 const struct ofp11_queue_get_config_request *qgcr11;
2488 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2489 raw = ofpraw_pull_assert(&b);
2491 switch ((int) raw) {
2492 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2494 *port = u16_to_ofp(ntohs(qgcr10->port));
2497 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2499 enum ofperr error = ofputil_port_from_ofp11(qgcr11->port, port);
2500 if (error || *port == OFPP_ANY) {
2509 return (ofp_to_u16(*port) < ofp_to_u16(OFPP_MAX)
2511 : OFPERR_OFPQOFC_BAD_PORT);
2514 /* Constructs and returns the beginning of a reply to
2515 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2516 * individual queues with ofputil_append_queue_get_config_reply(). */
2518 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2520 struct ofp10_queue_get_config_reply *qgcr10;
2521 struct ofp11_queue_get_config_reply *qgcr11;
2522 struct ofpbuf *reply;
2528 error = ofputil_decode_queue_get_config_request(oh, &port);
2531 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2532 raw = ofpraw_pull_assert(&b);
2534 switch ((int) raw) {
2535 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2536 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2538 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2539 qgcr10->port = htons(ofp_to_u16(port));
2542 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2543 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2545 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2546 qgcr11->port = ofputil_port_to_ofp11(port);
2557 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2560 if (rate != UINT16_MAX) {
2561 struct ofp_queue_prop_rate *oqpr;
2563 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2564 oqpr->prop_header.property = htons(property);
2565 oqpr->prop_header.len = htons(sizeof *oqpr);
2566 oqpr->rate = htons(rate);
2570 /* Appends a queue description for 'queue_id' to the
2571 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2573 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2574 const struct ofputil_queue_config *oqc)
2576 const struct ofp_header *oh = reply->data;
2577 size_t start_ofs, len_ofs;
2580 start_ofs = reply->size;
2581 if (oh->version < OFP12_VERSION) {
2582 struct ofp10_packet_queue *opq10;
2584 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2585 opq10->queue_id = htonl(oqc->queue_id);
2586 len_ofs = (char *) &opq10->len - (char *) reply->data;
2588 struct ofp12_packet_queue *opq12;
2590 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2591 opq12->port = ofputil_port_to_ofp11(oqc->port);
2592 opq12->queue_id = htonl(oqc->queue_id);
2593 len_ofs = (char *) &opq12->len - (char *) reply->data;
2596 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2597 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2599 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2600 *len = htons(reply->size - start_ofs);
2603 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2604 * stores in '*port' the port that the reply is about. The caller may call
2605 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2606 * queues included in the reply. Returns 0 if successful, otherwise an
2609 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2611 const struct ofp10_queue_get_config_reply *qgcr10;
2612 const struct ofp11_queue_get_config_reply *qgcr11;
2615 raw = ofpraw_pull_assert(reply);
2616 switch ((int) raw) {
2617 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2618 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2619 *port = u16_to_ofp(ntohs(qgcr10->port));
2622 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2623 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2624 return ofputil_port_from_ofp11(qgcr11->port, port);
2631 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2633 const struct ofp_queue_prop_rate *oqpr;
2635 if (hdr->len == htons(sizeof *oqpr)) {
2636 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2637 *rate = ntohs(oqpr->rate);
2640 return OFPERR_OFPBRC_BAD_LEN;
2644 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2645 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2646 * must already have pulled off the main header.
2648 * This function returns EOF if the last queue has already been decoded, 0 if a
2649 * queue was successfully decoded into '*queue', or an ofperr if there was a
2650 * problem decoding 'reply'. */
2652 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2653 struct ofputil_queue_config *queue)
2655 const struct ofp_header *oh;
2656 unsigned int opq_len;
2663 queue->min_rate = UINT16_MAX;
2664 queue->max_rate = UINT16_MAX;
2667 if (oh->version < OFP12_VERSION) {
2668 const struct ofp10_packet_queue *opq10;
2670 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2672 return OFPERR_OFPBRC_BAD_LEN;
2674 queue->queue_id = ntohl(opq10->queue_id);
2675 len = ntohs(opq10->len);
2676 opq_len = sizeof *opq10;
2678 const struct ofp12_packet_queue *opq12;
2680 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2682 return OFPERR_OFPBRC_BAD_LEN;
2684 queue->queue_id = ntohl(opq12->queue_id);
2685 len = ntohs(opq12->len);
2686 opq_len = sizeof *opq12;
2689 if (len < opq_len || len > reply->size + opq_len || len % 8) {
2690 return OFPERR_OFPBRC_BAD_LEN;
2695 const struct ofp_queue_prop_header *hdr;
2696 unsigned int property;
2697 unsigned int prop_len;
2698 enum ofperr error = 0;
2700 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2701 prop_len = ntohs(hdr->len);
2702 if (prop_len < sizeof *hdr || prop_len > reply->size || prop_len % 8) {
2703 return OFPERR_OFPBRC_BAD_LEN;
2706 property = ntohs(hdr->property);
2708 case OFPQT_MIN_RATE:
2709 error = parse_queue_rate(hdr, &queue->min_rate);
2712 case OFPQT_MAX_RATE:
2713 error = parse_queue_rate(hdr, &queue->max_rate);
2717 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2724 ofpbuf_pull(reply, prop_len);
2730 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2731 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2732 * successful, otherwise an OpenFlow error code. */
2734 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2735 const struct ofp_header *oh)
2740 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2741 raw = ofpraw_pull_assert(&b);
2742 switch ((int) raw) {
2743 case OFPRAW_OFPST10_FLOW_REQUEST:
2744 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2746 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2747 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2749 case OFPRAW_OFPST11_FLOW_REQUEST:
2750 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2752 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2753 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2755 case OFPRAW_NXST_FLOW_REQUEST:
2756 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2758 case OFPRAW_NXST_AGGREGATE_REQUEST:
2759 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2762 /* Hey, the caller lied. */
2767 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2768 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2769 * 'protocol', and returns the message. */
2771 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2772 enum ofputil_protocol protocol)
2778 case OFPUTIL_P_OF11_STD:
2779 case OFPUTIL_P_OF12_OXM:
2780 case OFPUTIL_P_OF13_OXM:
2781 case OFPUTIL_P_OF14_OXM:
2782 case OFPUTIL_P_OF15_OXM: {
2783 struct ofp11_flow_stats_request *ofsr;
2785 raw = (fsr->aggregate
2786 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2787 : OFPRAW_OFPST11_FLOW_REQUEST);
2788 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2789 ofputil_match_typical_len(protocol));
2790 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2791 ofsr->table_id = fsr->table_id;
2792 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2793 ofsr->out_group = htonl(fsr->out_group);
2794 ofsr->cookie = fsr->cookie;
2795 ofsr->cookie_mask = fsr->cookie_mask;
2796 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2800 case OFPUTIL_P_OF10_STD:
2801 case OFPUTIL_P_OF10_STD_TID: {
2802 struct ofp10_flow_stats_request *ofsr;
2804 raw = (fsr->aggregate
2805 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2806 : OFPRAW_OFPST10_FLOW_REQUEST);
2807 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2808 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2809 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2810 ofsr->table_id = fsr->table_id;
2811 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2815 case OFPUTIL_P_OF10_NXM:
2816 case OFPUTIL_P_OF10_NXM_TID: {
2817 struct nx_flow_stats_request *nfsr;
2820 raw = (fsr->aggregate
2821 ? OFPRAW_NXST_AGGREGATE_REQUEST
2822 : OFPRAW_NXST_FLOW_REQUEST);
2823 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2824 ofpbuf_put_zeros(msg, sizeof *nfsr);
2825 match_len = nx_put_match(msg, &fsr->match,
2826 fsr->cookie, fsr->cookie_mask);
2829 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2830 nfsr->match_len = htons(match_len);
2831 nfsr->table_id = fsr->table_id;
2842 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2843 * ofputil_flow_stats in 'fs'.
2845 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2846 * OpenFlow message. Calling this function multiple times for a single 'msg'
2847 * iterates through the replies. The caller must initially leave 'msg''s layer
2848 * pointers null and not modify them between calls.
2850 * Most switches don't send the values needed to populate fs->idle_age and
2851 * fs->hard_age, so those members will usually be set to 0. If the switch from
2852 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2853 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2854 * 'idle_age' and 'hard_age' members in 'fs'.
2856 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2857 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2858 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2860 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2861 * otherwise a positive errno value. */
2863 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2865 bool flow_age_extension,
2866 struct ofpbuf *ofpacts)
2868 const struct ofp_header *oh;
2869 size_t instructions_len;
2873 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2874 : ofpraw_pull(&raw, msg));
2882 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2883 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2884 const struct ofp11_flow_stats *ofs;
2886 uint16_t padded_match_len;
2888 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2890 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2891 "bytes at end", msg->size);
2895 length = ntohs(ofs->length);
2896 if (length < sizeof *ofs) {
2897 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2898 "length %"PRIuSIZE, length);
2902 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2903 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2906 instructions_len = length - sizeof *ofs - padded_match_len;
2908 fs->priority = ntohs(ofs->priority);
2909 fs->table_id = ofs->table_id;
2910 fs->duration_sec = ntohl(ofs->duration_sec);
2911 fs->duration_nsec = ntohl(ofs->duration_nsec);
2912 fs->idle_timeout = ntohs(ofs->idle_timeout);
2913 fs->hard_timeout = ntohs(ofs->hard_timeout);
2914 if (oh->version >= OFP14_VERSION) {
2915 fs->importance = ntohs(ofs->importance);
2919 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2920 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2930 fs->cookie = ofs->cookie;
2931 fs->packet_count = ntohll(ofs->packet_count);
2932 fs->byte_count = ntohll(ofs->byte_count);
2933 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2934 const struct ofp10_flow_stats *ofs;
2937 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2939 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2940 "bytes at end", msg->size);
2944 length = ntohs(ofs->length);
2945 if (length < sizeof *ofs) {
2946 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2947 "length %"PRIuSIZE, length);
2950 instructions_len = length - sizeof *ofs;
2952 fs->cookie = get_32aligned_be64(&ofs->cookie);
2953 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2954 fs->priority = ntohs(ofs->priority);
2955 fs->table_id = ofs->table_id;
2956 fs->duration_sec = ntohl(ofs->duration_sec);
2957 fs->duration_nsec = ntohl(ofs->duration_nsec);
2958 fs->idle_timeout = ntohs(ofs->idle_timeout);
2959 fs->hard_timeout = ntohs(ofs->hard_timeout);
2963 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2964 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2966 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2967 const struct nx_flow_stats *nfs;
2968 size_t match_len, length;
2970 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2972 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2973 "bytes at end", msg->size);
2977 length = ntohs(nfs->length);
2978 match_len = ntohs(nfs->match_len);
2979 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2980 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2981 "claims invalid length %"PRIuSIZE, match_len, length);
2984 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2987 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2989 fs->cookie = nfs->cookie;
2990 fs->table_id = nfs->table_id;
2991 fs->duration_sec = ntohl(nfs->duration_sec);
2992 fs->duration_nsec = ntohl(nfs->duration_nsec);
2993 fs->priority = ntohs(nfs->priority);
2994 fs->idle_timeout = ntohs(nfs->idle_timeout);
2995 fs->hard_timeout = ntohs(nfs->hard_timeout);
2999 if (flow_age_extension) {
3000 if (nfs->idle_age) {
3001 fs->idle_age = ntohs(nfs->idle_age) - 1;
3003 if (nfs->hard_age) {
3004 fs->hard_age = ntohs(nfs->hard_age) - 1;
3007 fs->packet_count = ntohll(nfs->packet_count);
3008 fs->byte_count = ntohll(nfs->byte_count);
3014 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
3016 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
3019 fs->ofpacts = ofpacts->data;
3020 fs->ofpacts_len = ofpacts->size;
3025 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
3027 * We use this in situations where OVS internally uses UINT64_MAX to mean
3028 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
3030 unknown_to_zero(uint64_t count)
3032 return count != UINT64_MAX ? count : 0;
3035 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
3036 * those already present in the list of ofpbufs in 'replies'. 'replies' should
3037 * have been initialized with ofpmp_init(). */
3039 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
3040 struct ovs_list *replies)
3042 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
3043 size_t start_ofs = reply->size;
3044 enum ofp_version version = ofpmp_version(replies);
3045 enum ofpraw raw = ofpmp_decode_raw(replies);
3047 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
3048 struct ofp11_flow_stats *ofs;
3050 ofpbuf_put_uninit(reply, sizeof *ofs);
3051 oxm_put_match(reply, &fs->match, version);
3052 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
3055 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3056 ofs->length = htons(reply->size - start_ofs);
3057 ofs->table_id = fs->table_id;
3059 ofs->duration_sec = htonl(fs->duration_sec);
3060 ofs->duration_nsec = htonl(fs->duration_nsec);
3061 ofs->priority = htons(fs->priority);
3062 ofs->idle_timeout = htons(fs->idle_timeout);
3063 ofs->hard_timeout = htons(fs->hard_timeout);
3064 if (version >= OFP14_VERSION) {
3065 ofs->importance = htons(fs->importance);
3067 ofs->importance = 0;
3069 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3070 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3074 memset(ofs->pad2, 0, sizeof ofs->pad2);
3075 ofs->cookie = fs->cookie;
3076 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3077 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3078 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3079 struct ofp10_flow_stats *ofs;
3081 ofpbuf_put_uninit(reply, sizeof *ofs);
3082 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3084 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3085 ofs->length = htons(reply->size - start_ofs);
3086 ofs->table_id = fs->table_id;
3088 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3089 ofs->duration_sec = htonl(fs->duration_sec);
3090 ofs->duration_nsec = htonl(fs->duration_nsec);
3091 ofs->priority = htons(fs->priority);
3092 ofs->idle_timeout = htons(fs->idle_timeout);
3093 ofs->hard_timeout = htons(fs->hard_timeout);
3094 memset(ofs->pad2, 0, sizeof ofs->pad2);
3095 put_32aligned_be64(&ofs->cookie, fs->cookie);
3096 put_32aligned_be64(&ofs->packet_count,
3097 htonll(unknown_to_zero(fs->packet_count)));
3098 put_32aligned_be64(&ofs->byte_count,
3099 htonll(unknown_to_zero(fs->byte_count)));
3100 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3101 struct nx_flow_stats *nfs;
3104 ofpbuf_put_uninit(reply, sizeof *nfs);
3105 match_len = nx_put_match(reply, &fs->match, 0, 0);
3106 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3108 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3109 nfs->length = htons(reply->size - start_ofs);
3110 nfs->table_id = fs->table_id;
3112 nfs->duration_sec = htonl(fs->duration_sec);
3113 nfs->duration_nsec = htonl(fs->duration_nsec);
3114 nfs->priority = htons(fs->priority);
3115 nfs->idle_timeout = htons(fs->idle_timeout);
3116 nfs->hard_timeout = htons(fs->hard_timeout);
3117 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3118 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3120 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3121 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3123 nfs->match_len = htons(match_len);
3124 nfs->cookie = fs->cookie;
3125 nfs->packet_count = htonll(fs->packet_count);
3126 nfs->byte_count = htonll(fs->byte_count);
3131 ofpmp_postappend(replies, start_ofs);
3134 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3135 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3137 ofputil_encode_aggregate_stats_reply(
3138 const struct ofputil_aggregate_stats *stats,
3139 const struct ofp_header *request)
3141 struct ofp_aggregate_stats_reply *asr;
3142 uint64_t packet_count;
3143 uint64_t byte_count;
3147 ofpraw_decode(&raw, request);
3148 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3149 packet_count = unknown_to_zero(stats->packet_count);
3150 byte_count = unknown_to_zero(stats->byte_count);
3152 packet_count = stats->packet_count;
3153 byte_count = stats->byte_count;
3156 msg = ofpraw_alloc_stats_reply(request, 0);
3157 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3158 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3159 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3160 asr->flow_count = htonl(stats->flow_count);
3166 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3167 const struct ofp_header *reply)
3169 struct ofp_aggregate_stats_reply *asr;
3172 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3173 ofpraw_pull_assert(&msg);
3176 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3177 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3178 stats->flow_count = ntohl(asr->flow_count);
3183 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3184 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3185 * an OpenFlow error code. */
3187 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3188 const struct ofp_header *oh)
3193 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3194 raw = ofpraw_pull_assert(&b);
3195 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3196 const struct ofp12_flow_removed *ofr;
3199 ofr = ofpbuf_pull(&b, sizeof *ofr);
3201 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3206 fr->priority = ntohs(ofr->priority);
3207 fr->cookie = ofr->cookie;
3208 fr->reason = ofr->reason;
3209 fr->table_id = ofr->table_id;
3210 fr->duration_sec = ntohl(ofr->duration_sec);
3211 fr->duration_nsec = ntohl(ofr->duration_nsec);
3212 fr->idle_timeout = ntohs(ofr->idle_timeout);
3213 fr->hard_timeout = ntohs(ofr->hard_timeout);
3214 fr->packet_count = ntohll(ofr->packet_count);
3215 fr->byte_count = ntohll(ofr->byte_count);
3216 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3217 const struct ofp10_flow_removed *ofr;
3219 ofr = ofpbuf_pull(&b, sizeof *ofr);
3221 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3222 fr->priority = ntohs(ofr->priority);
3223 fr->cookie = ofr->cookie;
3224 fr->reason = ofr->reason;
3226 fr->duration_sec = ntohl(ofr->duration_sec);
3227 fr->duration_nsec = ntohl(ofr->duration_nsec);
3228 fr->idle_timeout = ntohs(ofr->idle_timeout);
3229 fr->hard_timeout = 0;
3230 fr->packet_count = ntohll(ofr->packet_count);
3231 fr->byte_count = ntohll(ofr->byte_count);
3232 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3233 struct nx_flow_removed *nfr;
3236 nfr = ofpbuf_pull(&b, sizeof *nfr);
3237 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3243 return OFPERR_OFPBRC_BAD_LEN;
3246 fr->priority = ntohs(nfr->priority);
3247 fr->cookie = nfr->cookie;
3248 fr->reason = nfr->reason;
3249 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3250 fr->duration_sec = ntohl(nfr->duration_sec);
3251 fr->duration_nsec = ntohl(nfr->duration_nsec);
3252 fr->idle_timeout = ntohs(nfr->idle_timeout);
3253 fr->hard_timeout = 0;
3254 fr->packet_count = ntohll(nfr->packet_count);
3255 fr->byte_count = ntohll(nfr->byte_count);
3263 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3264 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3267 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3268 enum ofputil_protocol protocol)
3271 enum ofp_flow_removed_reason reason = fr->reason;
3273 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3274 reason = OFPRR_DELETE;
3278 case OFPUTIL_P_OF11_STD:
3279 case OFPUTIL_P_OF12_OXM:
3280 case OFPUTIL_P_OF13_OXM:
3281 case OFPUTIL_P_OF14_OXM:
3282 case OFPUTIL_P_OF15_OXM: {
3283 struct ofp12_flow_removed *ofr;
3285 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3286 ofputil_protocol_to_ofp_version(protocol),
3288 ofputil_match_typical_len(protocol));
3289 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3290 ofr->cookie = fr->cookie;
3291 ofr->priority = htons(fr->priority);
3292 ofr->reason = reason;
3293 ofr->table_id = fr->table_id;
3294 ofr->duration_sec = htonl(fr->duration_sec);
3295 ofr->duration_nsec = htonl(fr->duration_nsec);
3296 ofr->idle_timeout = htons(fr->idle_timeout);
3297 ofr->hard_timeout = htons(fr->hard_timeout);
3298 ofr->packet_count = htonll(fr->packet_count);
3299 ofr->byte_count = htonll(fr->byte_count);
3300 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3304 case OFPUTIL_P_OF10_STD:
3305 case OFPUTIL_P_OF10_STD_TID: {
3306 struct ofp10_flow_removed *ofr;
3308 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3310 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3311 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3312 ofr->cookie = fr->cookie;
3313 ofr->priority = htons(fr->priority);
3314 ofr->reason = reason;
3315 ofr->duration_sec = htonl(fr->duration_sec);
3316 ofr->duration_nsec = htonl(fr->duration_nsec);
3317 ofr->idle_timeout = htons(fr->idle_timeout);
3318 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3319 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3323 case OFPUTIL_P_OF10_NXM:
3324 case OFPUTIL_P_OF10_NXM_TID: {
3325 struct nx_flow_removed *nfr;
3328 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3329 htonl(0), NXM_TYPICAL_LEN);
3330 ofpbuf_put_zeros(msg, sizeof *nfr);
3331 match_len = nx_put_match(msg, &fr->match, 0, 0);
3334 nfr->cookie = fr->cookie;
3335 nfr->priority = htons(fr->priority);
3336 nfr->reason = reason;
3337 nfr->table_id = fr->table_id + 1;
3338 nfr->duration_sec = htonl(fr->duration_sec);
3339 nfr->duration_nsec = htonl(fr->duration_nsec);
3340 nfr->idle_timeout = htons(fr->idle_timeout);
3341 nfr->match_len = htons(match_len);
3342 nfr->packet_count = htonll(fr->packet_count);
3343 nfr->byte_count = htonll(fr->byte_count);
3355 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3356 const struct ofp_header *oh)
3361 memset(pin, 0, sizeof *pin);
3362 pin->cookie = OVS_BE64_MAX;
3364 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3365 raw = ofpraw_pull_assert(&b);
3366 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3367 const struct ofp13_packet_in *opi;
3369 size_t packet_in_size;
3371 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3372 packet_in_size = sizeof (struct ofp12_packet_in);
3374 packet_in_size = sizeof (struct ofp13_packet_in);
3377 opi = ofpbuf_pull(&b, packet_in_size);
3378 error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3383 if (!ofpbuf_try_pull(&b, 2)) {
3384 return OFPERR_OFPBRC_BAD_LEN;
3387 pin->reason = opi->pi.reason;
3388 pin->table_id = opi->pi.table_id;
3389 pin->buffer_id = ntohl(opi->pi.buffer_id);
3390 pin->total_len = ntohs(opi->pi.total_len);
3392 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3393 pin->cookie = opi->cookie;
3396 pin->packet = b.data;
3397 pin->packet_len = b.size;
3398 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3399 const struct ofp10_packet_in *opi;
3401 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3403 pin->packet = opi->data;
3404 pin->packet_len = b.size;
3406 match_init_catchall(&pin->flow_metadata);
3407 match_set_in_port(&pin->flow_metadata, u16_to_ofp(ntohs(opi->in_port)));
3408 pin->reason = opi->reason;
3409 pin->buffer_id = ntohl(opi->buffer_id);
3410 pin->total_len = ntohs(opi->total_len);
3411 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3412 const struct ofp11_packet_in *opi;
3416 opi = ofpbuf_pull(&b, sizeof *opi);
3418 pin->packet = b.data;
3419 pin->packet_len = b.size;
3421 pin->buffer_id = ntohl(opi->buffer_id);
3422 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3426 match_init_catchall(&pin->flow_metadata);
3427 match_set_in_port(&pin->flow_metadata, in_port);
3428 pin->total_len = ntohs(opi->total_len);
3429 pin->reason = opi->reason;
3430 pin->table_id = opi->table_id;
3431 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3432 const struct nx_packet_in *npi;
3435 npi = ofpbuf_pull(&b, sizeof *npi);
3436 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3437 &pin->flow_metadata, NULL, NULL);
3442 if (!ofpbuf_try_pull(&b, 2)) {
3443 return OFPERR_OFPBRC_BAD_LEN;
3446 pin->reason = npi->reason;
3447 pin->table_id = npi->table_id;
3448 pin->cookie = npi->cookie;
3450 pin->buffer_id = ntohl(npi->buffer_id);
3451 pin->total_len = ntohs(npi->total_len);
3453 pin->packet = b.data;
3454 pin->packet_len = b.size;
3462 static struct ofpbuf *
3463 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3465 struct ofp10_packet_in *opi;
3466 struct ofpbuf *packet;
3468 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3469 htonl(0), pin->packet_len);
3470 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3471 opi->total_len = htons(pin->total_len);
3472 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3473 opi->reason = pin->reason;
3474 opi->buffer_id = htonl(pin->buffer_id);
3476 ofpbuf_put(packet, pin->packet, pin->packet_len);
3481 static struct ofpbuf *
3482 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3484 struct nx_packet_in *npi;
3485 struct ofpbuf *packet;
3488 /* The final argument is just an estimate of the space required. */
3489 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3490 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3491 ofpbuf_put_zeros(packet, sizeof *npi);
3492 match_len = nx_put_match(packet, &pin->flow_metadata, 0, 0);
3493 ofpbuf_put_zeros(packet, 2);
3494 ofpbuf_put(packet, pin->packet, pin->packet_len);
3497 npi->buffer_id = htonl(pin->buffer_id);
3498 npi->total_len = htons(pin->total_len);
3499 npi->reason = pin->reason;
3500 npi->table_id = pin->table_id;
3501 npi->cookie = pin->cookie;
3502 npi->match_len = htons(match_len);
3507 static struct ofpbuf *
3508 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3510 struct ofp11_packet_in *opi;
3511 struct ofpbuf *packet;
3513 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3514 htonl(0), pin->packet_len);
3515 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3516 opi->buffer_id = htonl(pin->buffer_id);
3517 opi->in_port = ofputil_port_to_ofp11(pin->flow_metadata.flow.in_port.ofp_port);
3518 opi->in_phy_port = opi->in_port;
3519 opi->total_len = htons(pin->total_len);
3520 opi->reason = pin->reason;
3521 opi->table_id = pin->table_id;
3523 ofpbuf_put(packet, pin->packet, pin->packet_len);
3528 static struct ofpbuf *
3529 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3530 enum ofputil_protocol protocol)
3532 struct ofp13_packet_in *opi;
3533 enum ofpraw packet_in_raw;
3534 enum ofp_version packet_in_version;
3535 size_t packet_in_size;
3536 struct ofpbuf *packet;
3538 if (protocol == OFPUTIL_P_OF12_OXM) {
3539 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3540 packet_in_version = OFP12_VERSION;
3541 packet_in_size = sizeof (struct ofp12_packet_in);
3543 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3544 packet_in_version = ofputil_protocol_to_ofp_version(protocol);
3545 packet_in_size = sizeof (struct ofp13_packet_in);
3548 /* The final argument is just an estimate of the space required. */
3549 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3550 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3551 ofpbuf_put_zeros(packet, packet_in_size);
3552 oxm_put_match(packet, &pin->flow_metadata,
3553 ofputil_protocol_to_ofp_version(protocol));
3554 ofpbuf_put_zeros(packet, 2);
3555 ofpbuf_put(packet, pin->packet, pin->packet_len);
3558 opi->pi.buffer_id = htonl(pin->buffer_id);
3559 opi->pi.total_len = htons(pin->total_len);
3560 opi->pi.reason = pin->reason;
3561 opi->pi.table_id = pin->table_id;
3562 if (protocol != OFPUTIL_P_OF12_OXM) {
3563 opi->cookie = pin->cookie;
3569 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3570 * in the format specified by 'packet_in_format'. */
3572 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3573 enum ofputil_protocol protocol,
3574 enum nx_packet_in_format packet_in_format)
3576 struct ofpbuf *packet;
3579 case OFPUTIL_P_OF10_STD:
3580 case OFPUTIL_P_OF10_STD_TID:
3581 case OFPUTIL_P_OF10_NXM:
3582 case OFPUTIL_P_OF10_NXM_TID:
3583 packet = (packet_in_format == NXPIF_NXM
3584 ? ofputil_encode_nx_packet_in(pin)
3585 : ofputil_encode_ofp10_packet_in(pin));
3588 case OFPUTIL_P_OF11_STD:
3589 packet = ofputil_encode_ofp11_packet_in(pin);
3592 case OFPUTIL_P_OF12_OXM:
3593 case OFPUTIL_P_OF13_OXM:
3594 case OFPUTIL_P_OF14_OXM:
3595 case OFPUTIL_P_OF15_OXM:
3596 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3603 ofpmsg_update_length(packet);
3607 /* Returns a string form of 'reason'. The return value is either a statically
3608 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3609 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3611 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3612 char *reasonbuf, size_t bufsize)
3619 case OFPR_INVALID_TTL:
3620 return "invalid_ttl";
3621 case OFPR_ACTION_SET:
3622 return "action_set";
3625 case OFPR_PACKET_OUT:
3626 return "packet_out";
3628 case OFPR_N_REASONS:
3630 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3636 ofputil_packet_in_reason_from_string(const char *s,
3637 enum ofp_packet_in_reason *reason)
3641 for (i = 0; i < OFPR_N_REASONS; i++) {
3642 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3643 const char *reason_s;
3645 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3647 if (!strcasecmp(s, reason_s)) {
3655 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3658 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3659 * message's actions. The caller must initialize 'ofpacts' and retains
3660 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3662 * Returns 0 if successful, otherwise an OFPERR_* value. */
3664 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3665 const struct ofp_header *oh,
3666 struct ofpbuf *ofpacts)
3671 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3672 raw = ofpraw_pull_assert(&b);
3674 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3676 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3678 po->buffer_id = ntohl(opo->buffer_id);
3679 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3684 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3685 oh->version, ofpacts);
3689 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3691 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3693 po->buffer_id = ntohl(opo->buffer_id);
3694 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3696 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3697 oh->version, ofpacts);
3705 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3706 && po->in_port != OFPP_LOCAL
3707 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3708 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3710 return OFPERR_OFPBRC_BAD_PORT;
3713 po->ofpacts = ofpacts->data;
3714 po->ofpacts_len = ofpacts->size;
3716 if (po->buffer_id == UINT32_MAX) {
3717 po->packet = b.data;
3718 po->packet_len = b.size;
3727 /* ofputil_phy_port */
3729 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3730 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3731 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3732 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3733 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3734 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3735 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3736 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3738 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3739 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3740 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3741 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3742 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3743 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3745 static enum netdev_features
3746 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3748 uint32_t ofp10 = ntohl(ofp10_);
3749 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3753 netdev_port_features_to_ofp10(enum netdev_features features)
3755 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3758 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3759 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3760 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3761 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3762 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3763 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3764 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3765 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3766 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3767 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3768 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3769 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3770 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3771 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3772 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3773 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3775 static enum netdev_features
3776 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3778 return ntohl(ofp11) & 0xffff;
3782 netdev_port_features_to_ofp11(enum netdev_features features)
3784 return htonl(features & 0xffff);
3788 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3789 const struct ofp10_phy_port *opp)
3791 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3792 pp->hw_addr = opp->hw_addr;
3793 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3795 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3796 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3798 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3799 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3800 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3801 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3803 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3804 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3810 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3811 const struct ofp11_port *op)
3815 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3819 pp->hw_addr = op->hw_addr;
3820 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3822 pp->config = ntohl(op->config) & OFPPC11_ALL;
3823 pp->state = ntohl(op->state) & OFPPS11_ALL;
3825 pp->curr = netdev_port_features_from_ofp11(op->curr);
3826 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3827 pp->supported = netdev_port_features_from_ofp11(op->supported);
3828 pp->peer = netdev_port_features_from_ofp11(op->peer);
3830 pp->curr_speed = ntohl(op->curr_speed);
3831 pp->max_speed = ntohl(op->max_speed);
3837 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3838 struct ofputil_phy_port *pp)
3840 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3842 if (payload->size != sizeof *eth) {
3843 return OFPERR_OFPBPC_BAD_LEN;
3846 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3847 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3848 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3849 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3851 pp->curr_speed = ntohl(eth->curr_speed);
3852 pp->max_speed = ntohl(eth->max_speed);
3858 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3860 struct ofpbuf properties;
3861 struct ofp14_port *op;
3865 op = ofpbuf_try_pull(msg, sizeof *op);
3867 return OFPERR_OFPBRC_BAD_LEN;
3870 len = ntohs(op->length);
3871 if (len < sizeof *op || len - sizeof *op > msg->size) {
3872 return OFPERR_OFPBRC_BAD_LEN;
3875 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3877 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3881 pp->hw_addr = op->hw_addr;
3882 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3884 pp->config = ntohl(op->config) & OFPPC11_ALL;
3885 pp->state = ntohl(op->state) & OFPPS11_ALL;
3887 while (properties.size > 0) {
3888 struct ofpbuf payload;
3892 error = ofputil_pull_property(&properties, &payload, &type);
3898 case OFPPDPT14_ETHERNET:
3899 error = parse_ofp14_port_ethernet_property(&payload, pp);
3903 log_property(true, "unknown port property %"PRIu16, type);
3917 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3918 struct ofp10_phy_port *opp)
3920 memset(opp, 0, sizeof *opp);
3922 opp->port_no = htons(ofp_to_u16(pp->port_no));
3923 opp->hw_addr = pp->hw_addr;
3924 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3926 opp->config = htonl(pp->config & OFPPC10_ALL);
3927 opp->state = htonl(pp->state & OFPPS10_ALL);
3929 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3930 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3931 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3932 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3936 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3937 struct ofp11_port *op)
3939 memset(op, 0, sizeof *op);
3941 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3942 op->hw_addr = pp->hw_addr;
3943 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3945 op->config = htonl(pp->config & OFPPC11_ALL);
3946 op->state = htonl(pp->state & OFPPS11_ALL);
3948 op->curr = netdev_port_features_to_ofp11(pp->curr);
3949 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3950 op->supported = netdev_port_features_to_ofp11(pp->supported);
3951 op->peer = netdev_port_features_to_ofp11(pp->peer);
3953 op->curr_speed = htonl(pp->curr_speed);
3954 op->max_speed = htonl(pp->max_speed);
3958 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3961 struct ofp14_port *op;
3962 struct ofp14_port_desc_prop_ethernet *eth;
3964 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3966 op = ofpbuf_put_zeros(b, sizeof *op);
3967 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3968 op->length = htons(sizeof *op + sizeof *eth);
3969 op->hw_addr = pp->hw_addr;
3970 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3971 op->config = htonl(pp->config & OFPPC11_ALL);
3972 op->state = htonl(pp->state & OFPPS11_ALL);
3974 eth = ofpbuf_put_zeros(b, sizeof *eth);
3975 eth->type = htons(OFPPDPT14_ETHERNET);
3976 eth->length = htons(sizeof *eth);
3977 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3978 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3979 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3980 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3981 eth->curr_speed = htonl(pp->curr_speed);
3982 eth->max_speed = htonl(pp->max_speed);
3986 ofputil_put_phy_port(enum ofp_version ofp_version,
3987 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3989 switch (ofp_version) {
3990 case OFP10_VERSION: {
3991 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3992 ofputil_encode_ofp10_phy_port(pp, opp);
3998 case OFP13_VERSION: {
3999 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
4000 ofputil_encode_ofp11_port(pp, op);
4006 ofputil_put_ofp14_port(pp, b);
4015 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
4021 ofpbuf_use_const(&b, request, ntohs(request->length));
4022 raw = ofpraw_pull_assert(&b);
4023 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4026 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4027 ovs_be32 *ofp11_port;
4029 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4030 return ofputil_port_from_ofp11(*ofp11_port, port);
4037 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4040 struct ofpbuf *request;
4042 switch (ofp_version) {
4048 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4051 case OFP15_VERSION:{
4052 struct ofp15_port_desc_request *req;
4053 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4055 req = ofpbuf_put_zeros(request, sizeof *req);
4056 req->port_no = ofputil_port_to_ofp11(port);
4067 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4068 struct ovs_list *replies)
4070 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4071 size_t start_ofs = reply->size;
4073 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4074 ofpmp_postappend(replies, start_ofs);
4077 /* ofputil_switch_features */
4079 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4080 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4081 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4082 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4083 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4084 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4085 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4086 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4089 ofputil_capabilities_mask(enum ofp_version ofp_version)
4091 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4092 switch (ofp_version) {
4095 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4100 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4102 /* Caller needs to check osf->header.version itself */
4107 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4108 * abstract representation in '*features'. Initializes '*b' to iterate over
4109 * the OpenFlow port structures following 'osf' with later calls to
4110 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4111 * OFPERR_* value. */
4113 ofputil_decode_switch_features(const struct ofp_header *oh,
4114 struct ofputil_switch_features *features,
4117 const struct ofp_switch_features *osf;
4120 ofpbuf_use_const(b, oh, ntohs(oh->length));
4121 raw = ofpraw_pull_assert(b);
4123 osf = ofpbuf_pull(b, sizeof *osf);
4124 features->datapath_id = ntohll(osf->datapath_id);
4125 features->n_buffers = ntohl(osf->n_buffers);
4126 features->n_tables = osf->n_tables;
4127 features->auxiliary_id = 0;
4129 features->capabilities = ntohl(osf->capabilities) &
4130 ofputil_capabilities_mask(oh->version);
4132 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4133 if (osf->capabilities & htonl(OFPC10_STP)) {
4134 features->capabilities |= OFPUTIL_C_STP;
4136 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4138 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4139 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4140 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4141 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4143 features->ofpacts = 0;
4144 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4145 features->auxiliary_id = osf->auxiliary_id;
4148 return OFPERR_OFPBRC_BAD_VERSION;
4154 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4155 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4156 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4158 * Given a buffer 'b' that contains a Features Reply message, this message
4159 * checks if it contains a complete list of the switch's ports. Returns true,
4160 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4161 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4164 * When this function returns false, the caller should send an OFPST_PORT_DESC
4165 * stats request to get the ports. */
4167 ofputil_switch_features_has_ports(struct ofpbuf *b)
4169 struct ofp_header *oh = b->data;
4170 size_t phy_port_size;
4172 if (oh->version >= OFP13_VERSION) {
4173 /* OpenFlow 1.3+ never has ports in the feature reply. */
4177 phy_port_size = (oh->version == OFP10_VERSION
4178 ? sizeof(struct ofp10_phy_port)
4179 : sizeof(struct ofp11_port));
4180 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4181 /* There's room for additional ports in the feature reply.
4182 * Assume that the list is complete. */
4186 /* The feature reply has no room for more ports. Probably the list is
4187 * truncated. Drop the ports and tell the caller to retrieve them with
4188 * OFPST_PORT_DESC. */
4189 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4190 ofpmsg_update_length(b);
4194 /* Returns a buffer owned by the caller that encodes 'features' in the format
4195 * required by 'protocol' with the given 'xid'. The caller should append port
4196 * information to the buffer with subsequent calls to
4197 * ofputil_put_switch_features_port(). */
4199 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4200 enum ofputil_protocol protocol, ovs_be32 xid)
4202 struct ofp_switch_features *osf;
4204 enum ofp_version version;
4207 version = ofputil_protocol_to_ofp_version(protocol);
4210 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4214 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4219 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4224 b = ofpraw_alloc_xid(raw, version, xid, 0);
4225 osf = ofpbuf_put_zeros(b, sizeof *osf);
4226 osf->datapath_id = htonll(features->datapath_id);
4227 osf->n_buffers = htonl(features->n_buffers);
4228 osf->n_tables = features->n_tables;
4230 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4231 osf->capabilities = htonl(features->capabilities &
4232 ofputil_capabilities_mask(version));
4235 if (features->capabilities & OFPUTIL_C_STP) {
4236 osf->capabilities |= htonl(OFPC10_STP);
4238 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4244 osf->auxiliary_id = features->auxiliary_id;
4248 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4249 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4259 /* Encodes 'pp' into the format required by the switch_features message already
4260 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4261 * and appends the encoded version to 'b'. */
4263 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4266 const struct ofp_header *oh = b->data;
4268 if (oh->version < OFP13_VERSION) {
4269 /* Try adding a port description to the message, but drop it again if
4270 * the buffer overflows. (This possibility for overflow is why
4271 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4272 size_t start_ofs = b->size;
4273 ofputil_put_phy_port(oh->version, pp, b);
4274 if (b->size > UINT16_MAX) {
4275 b->size = start_ofs;
4280 /* ofputil_port_status */
4282 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4283 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4285 ofputil_decode_port_status(const struct ofp_header *oh,
4286 struct ofputil_port_status *ps)
4288 const struct ofp_port_status *ops;
4292 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4293 ofpraw_pull_assert(&b);
4294 ops = ofpbuf_pull(&b, sizeof *ops);
4296 if (ops->reason != OFPPR_ADD &&
4297 ops->reason != OFPPR_DELETE &&
4298 ops->reason != OFPPR_MODIFY) {
4299 return OFPERR_NXBRC_BAD_REASON;
4301 ps->reason = ops->reason;
4303 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4304 ovs_assert(retval != EOF);
4308 /* Converts the abstract form of a "port status" message in '*ps' into an
4309 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4310 * a buffer owned by the caller. */
4312 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4313 enum ofputil_protocol protocol)
4315 struct ofp_port_status *ops;
4317 enum ofp_version version;
4320 version = ofputil_protocol_to_ofp_version(protocol);
4323 raw = OFPRAW_OFPT10_PORT_STATUS;
4329 raw = OFPRAW_OFPT11_PORT_STATUS;
4334 raw = OFPRAW_OFPT14_PORT_STATUS;
4341 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4342 ops = ofpbuf_put_zeros(b, sizeof *ops);
4343 ops->reason = ps->reason;
4344 ofputil_put_phy_port(version, &ps->desc, b);
4345 ofpmsg_update_length(b);
4349 /* ofputil_port_mod */
4352 parse_port_mod_ethernet_property(struct ofpbuf *property,
4353 struct ofputil_port_mod *pm)
4355 struct ofp14_port_mod_prop_ethernet *eth = property->data;
4357 if (property->size != sizeof *eth) {
4358 return OFPERR_OFPBRC_BAD_LEN;
4361 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4365 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4366 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4368 ofputil_decode_port_mod(const struct ofp_header *oh,
4369 struct ofputil_port_mod *pm, bool loose)
4374 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4375 raw = ofpraw_pull_assert(&b);
4377 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4378 const struct ofp10_port_mod *opm = b.data;
4380 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4381 pm->hw_addr = opm->hw_addr;
4382 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4383 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4384 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4385 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4386 const struct ofp11_port_mod *opm = b.data;
4389 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4394 pm->hw_addr = opm->hw_addr;
4395 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4396 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4397 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4398 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4399 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4402 memset(pm, 0, sizeof *pm);
4404 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4409 pm->hw_addr = opm->hw_addr;
4410 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4411 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4413 while (b.size > 0) {
4414 struct ofpbuf property;
4418 error = ofputil_pull_property(&b, &property, &type);
4424 case OFPPMPT14_ETHERNET:
4425 error = parse_port_mod_ethernet_property(&property, pm);
4429 log_property(loose, "unknown port_mod property %"PRIu16, type);
4432 } else if (type == OFPPMPT14_EXPERIMENTER) {
4433 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4435 error = OFPERR_OFPBRC_BAD_TYPE;
4445 return OFPERR_OFPBRC_BAD_TYPE;
4448 pm->config &= pm->mask;
4452 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4453 * message suitable for 'protocol', and returns that encoded form in a buffer
4454 * owned by the caller. */
4456 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4457 enum ofputil_protocol protocol)
4459 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4462 switch (ofp_version) {
4463 case OFP10_VERSION: {
4464 struct ofp10_port_mod *opm;
4466 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4467 opm = ofpbuf_put_zeros(b, sizeof *opm);
4468 opm->port_no = htons(ofp_to_u16(pm->port_no));
4469 opm->hw_addr = pm->hw_addr;
4470 opm->config = htonl(pm->config & OFPPC10_ALL);
4471 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4472 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4478 case OFP13_VERSION: {
4479 struct ofp11_port_mod *opm;
4481 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4482 opm = ofpbuf_put_zeros(b, sizeof *opm);
4483 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4484 opm->hw_addr = pm->hw_addr;
4485 opm->config = htonl(pm->config & OFPPC11_ALL);
4486 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4487 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4491 case OFP15_VERSION: {
4492 struct ofp14_port_mod_prop_ethernet *eth;
4493 struct ofp14_port_mod *opm;
4495 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4496 opm = ofpbuf_put_zeros(b, sizeof *opm);
4497 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4498 opm->hw_addr = pm->hw_addr;
4499 opm->config = htonl(pm->config & OFPPC11_ALL);
4500 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4502 if (pm->advertise) {
4503 eth = ofpbuf_put_zeros(b, sizeof *eth);
4504 eth->type = htons(OFPPMPT14_ETHERNET);
4505 eth->length = htons(sizeof *eth);
4506 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4517 /* Table features. */
4520 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4525 error = ofputil_pull_property(msg, payload, typep);
4526 if (payload && !error) {
4527 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4533 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4538 while (payload->size > 0) {
4542 error = ofputil_pull_property__(payload, NULL, 1, &type);
4546 if (type < CHAR_BIT * sizeof types) {
4547 types |= 1u << type;
4551 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4556 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4559 while (payload->size > 0) {
4560 enum ovs_instruction_type inst;
4564 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4565 * It seems clear that they aren't padded to 8 bytes, though, because
4566 * both standards say that "non-experimenter instructions are 4 bytes"
4567 * and do not mention any padding before the first instruction ID.
4568 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4569 * aligned on an odd 4-byte boundary.)
4571 * Anyway, we just assume they're all glommed together on byte
4573 error = ofputil_pull_property__(payload, NULL, 1, &ofpit);
4578 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4580 *insts |= 1u << inst;
4581 } else if (!loose) {
4589 parse_table_features_next_table(struct ofpbuf *payload,
4590 unsigned long int *next_tables)
4594 memset(next_tables, 0, bitmap_n_bytes(255));
4595 for (i = 0; i < payload->size; i++) {
4596 uint8_t id = ((const uint8_t *) payload->data)[i];
4598 return OFPERR_OFPBPC_BAD_VALUE;
4600 bitmap_set1(next_tables, id);
4606 parse_oxms(struct ofpbuf *payload, bool loose,
4607 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4609 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4610 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4612 while (payload->size > 0) {
4613 const struct mf_field *field;
4617 error = nx_pull_header(payload, &field, &hasmask);
4619 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4620 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4626 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4627 return OFPERR_OFPBMC_BAD_MASK;
4631 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4632 return OFPERR_OFPBMC_BAD_MASK;
4637 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4638 * ofputil_table_features in 'tf'.
4640 * If 'loose' is true, this function ignores properties and values that it does
4641 * not understand, as a controller would want to do when interpreting
4642 * capabilities provided by a switch. If 'loose' is false, this function
4643 * treats unknown properties and values as an error, as a switch would want to
4644 * do when interpreting a configuration request made by a controller.
4646 * A single OpenFlow message can specify features for multiple tables. Calling
4647 * this function multiple times for a single 'msg' iterates through the tables
4648 * in the message. The caller must initially leave 'msg''s layer pointers null
4649 * and not modify them between calls.
4651 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4652 * a positive "enum ofperr" value. */
4654 ofputil_decode_table_features(struct ofpbuf *msg,
4655 struct ofputil_table_features *tf, bool loose)
4657 const struct ofp_header *oh;
4658 struct ofp13_table_features *otf;
4659 struct ofpbuf properties;
4662 memset(tf, 0, sizeof *tf);
4665 ofpraw_pull_assert(msg);
4673 if (msg->size < sizeof *otf) {
4674 return OFPERR_OFPBPC_BAD_LEN;
4678 len = ntohs(otf->length);
4679 if (len < sizeof *otf || len % 8 || len > msg->size) {
4680 return OFPERR_OFPBPC_BAD_LEN;
4682 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4683 ofpbuf_pull(&properties, sizeof *otf);
4685 tf->table_id = otf->table_id;
4686 if (tf->table_id == OFPTT_ALL) {
4687 return OFPERR_OFPTFFC_BAD_TABLE;
4690 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4691 tf->metadata_match = otf->metadata_match;
4692 tf->metadata_write = otf->metadata_write;
4693 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4694 if (oh->version >= OFP14_VERSION) {
4695 uint32_t caps = ntohl(otf->capabilities);
4696 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4697 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4699 tf->supports_eviction = -1;
4700 tf->supports_vacancy_events = -1;
4702 tf->max_entries = ntohl(otf->max_entries);
4704 while (properties.size > 0) {
4705 struct ofpbuf payload;
4709 error = pull_table_feature_property(&properties, &payload, &type);
4714 switch ((enum ofp13_table_feature_prop_type) type) {
4715 case OFPTFPT13_INSTRUCTIONS:
4716 error = parse_instruction_ids(&payload, loose,
4717 &tf->nonmiss.instructions);
4719 case OFPTFPT13_INSTRUCTIONS_MISS:
4720 error = parse_instruction_ids(&payload, loose,
4721 &tf->miss.instructions);
4724 case OFPTFPT13_NEXT_TABLES:
4725 error = parse_table_features_next_table(&payload,
4728 case OFPTFPT13_NEXT_TABLES_MISS:
4729 error = parse_table_features_next_table(&payload, tf->miss.next);
4732 case OFPTFPT13_WRITE_ACTIONS:
4733 error = parse_action_bitmap(&payload, oh->version,
4734 &tf->nonmiss.write.ofpacts);
4736 case OFPTFPT13_WRITE_ACTIONS_MISS:
4737 error = parse_action_bitmap(&payload, oh->version,
4738 &tf->miss.write.ofpacts);
4741 case OFPTFPT13_APPLY_ACTIONS:
4742 error = parse_action_bitmap(&payload, oh->version,
4743 &tf->nonmiss.apply.ofpacts);
4745 case OFPTFPT13_APPLY_ACTIONS_MISS:
4746 error = parse_action_bitmap(&payload, oh->version,
4747 &tf->miss.apply.ofpacts);
4750 case OFPTFPT13_MATCH:
4751 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4753 case OFPTFPT13_WILDCARDS:
4754 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4757 case OFPTFPT13_WRITE_SETFIELD:
4758 error = parse_oxms(&payload, loose,
4759 &tf->nonmiss.write.set_fields, NULL);
4761 case OFPTFPT13_WRITE_SETFIELD_MISS:
4762 error = parse_oxms(&payload, loose,
4763 &tf->miss.write.set_fields, NULL);
4765 case OFPTFPT13_APPLY_SETFIELD:
4766 error = parse_oxms(&payload, loose,
4767 &tf->nonmiss.apply.set_fields, NULL);
4769 case OFPTFPT13_APPLY_SETFIELD_MISS:
4770 error = parse_oxms(&payload, loose,
4771 &tf->miss.apply.set_fields, NULL);
4774 case OFPTFPT13_EXPERIMENTER:
4775 case OFPTFPT13_EXPERIMENTER_MISS:
4777 log_property(loose, "unknown table features property %"PRIu16,
4779 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4787 /* Fix inconsistencies:
4789 * - Turn on 'match' bits that are set in 'mask', because maskable
4790 * fields are matchable.
4792 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4793 * that is arbitrarily maskable can be wildcarded entirely.
4795 * - Turn off 'wildcard' bits that are not in 'match', because a field
4796 * must be matchable for it to be meaningfully wildcarded. */
4797 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4798 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4799 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4804 /* Encodes and returns a request to obtain the table features of a switch.
4805 * The message is encoded for OpenFlow version 'ofp_version'. */
4807 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4809 struct ofpbuf *request = NULL;
4811 switch (ofp_version) {
4815 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4816 "(\'-O OpenFlow13\')");
4820 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4831 put_fields_property(struct ofpbuf *reply,
4832 const struct mf_bitmap *fields,
4833 const struct mf_bitmap *masks,
4834 enum ofp13_table_feature_prop_type property,
4835 enum ofp_version version)
4840 start_ofs = start_property(reply, property);
4841 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4842 nx_put_header(reply, field, version,
4843 masks && bitmap_is_set(masks->bm, field));
4845 end_property(reply, start_ofs);
4849 put_table_action_features(struct ofpbuf *reply,
4850 const struct ofputil_table_action_features *taf,
4851 enum ofp13_table_feature_prop_type actions_type,
4852 enum ofp13_table_feature_prop_type set_fields_type,
4853 int miss_offset, enum ofp_version version)
4857 start_ofs = start_property(reply, actions_type + miss_offset);
4858 put_bitmap_properties(reply,
4859 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4861 end_property(reply, start_ofs);
4863 put_fields_property(reply, &taf->set_fields, NULL,
4864 set_fields_type + miss_offset, version);
4868 put_table_instruction_features(
4869 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4870 int miss_offset, enum ofp_version version)
4875 start_ofs = start_property(reply, OFPTFPT13_INSTRUCTIONS + miss_offset);
4876 put_bitmap_properties(reply,
4877 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4879 end_property(reply, start_ofs);
4881 start_ofs = start_property(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4882 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4883 ofpbuf_put(reply, &table_id, 1);
4885 end_property(reply, start_ofs);
4887 put_table_action_features(reply, &tif->write,
4888 OFPTFPT13_WRITE_ACTIONS,
4889 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4890 put_table_action_features(reply, &tif->apply,
4891 OFPTFPT13_APPLY_ACTIONS,
4892 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4896 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4897 struct ovs_list *replies)
4899 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4900 enum ofp_version version = ofpmp_version(replies);
4901 size_t start_ofs = reply->size;
4902 struct ofp13_table_features *otf;
4904 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4905 otf->table_id = tf->table_id;
4906 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4907 otf->metadata_match = tf->metadata_match;
4908 otf->metadata_write = tf->metadata_write;
4909 if (version >= OFP14_VERSION) {
4910 if (tf->supports_eviction) {
4911 otf->capabilities |= htonl(OFPTC14_EVICTION);
4913 if (tf->supports_vacancy_events) {
4914 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4917 otf->max_entries = htonl(tf->max_entries);
4919 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4920 put_table_instruction_features(reply, &tf->miss, 1, version);
4922 put_fields_property(reply, &tf->match, &tf->mask,
4923 OFPTFPT13_MATCH, version);
4924 put_fields_property(reply, &tf->wildcard, NULL,
4925 OFPTFPT13_WILDCARDS, version);
4927 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4928 otf->length = htons(reply->size - start_ofs);
4929 ofpmp_postappend(replies, start_ofs);
4933 parse_table_desc_eviction_property(struct ofpbuf *property,
4934 struct ofputil_table_desc *td)
4936 struct ofp14_table_mod_prop_eviction *ote = property->data;
4938 if (property->size != sizeof *ote) {
4939 return OFPERR_OFPBPC_BAD_LEN;
4942 td->eviction_flags = ntohl(ote->flags);
4947 parse_table_desc_vacancy_property(struct ofpbuf *property,
4948 struct ofputil_table_desc *td)
4950 struct ofp14_table_mod_prop_vacancy *otv = property->data;
4952 if (property->size != sizeof *otv) {
4953 return OFPERR_OFPBPC_BAD_LEN;
4956 td->table_vacancy.vacancy_down = otv->vacancy_down;
4957 td->table_vacancy.vacancy_up = otv->vacancy_up;
4958 td->table_vacancy.vacancy = otv->vacancy;
4962 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
4963 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
4964 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
4967 ofputil_decode_table_desc(struct ofpbuf *msg,
4968 struct ofputil_table_desc *td,
4969 enum ofp_version version)
4971 struct ofp14_table_desc *otd;
4972 struct ofpbuf properties;
4975 memset(td, 0, sizeof *td);
4978 ofpraw_pull_assert(msg);
4985 otd = ofpbuf_try_pull(msg, sizeof *otd);
4987 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
4988 "leftover bytes at end", msg->size);
4989 return OFPERR_OFPBRC_BAD_LEN;
4992 td->table_id = otd->table_id;
4993 length = ntohs(otd->length);
4994 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
4995 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
4996 "length %"PRIuSIZE, length);
4997 return OFPERR_OFPBRC_BAD_LEN;
4999 length -= sizeof *otd;
5000 ofpbuf_use_const(&properties, ofpbuf_pull(msg, length), length);
5002 td->eviction = ofputil_decode_table_eviction(otd->config, version);
5003 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
5004 td->eviction_flags = UINT32_MAX;
5006 while (properties.size > 0) {
5007 struct ofpbuf payload;
5011 error = ofputil_pull_property(&properties, &payload, &type);
5017 case OFPTMPT14_EVICTION:
5018 error = parse_table_desc_eviction_property(&payload, td);
5021 case OFPTMPT14_VACANCY:
5022 error = parse_table_desc_vacancy_property(&payload, td);
5026 log_property(true, "unknown table_desc property %"PRIu16, type);
5039 /* Encodes and returns a request to obtain description of tables of a switch.
5040 * The message is encoded for OpenFlow version 'ofp_version'. */
5042 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
5044 struct ofpbuf *request = NULL;
5046 if (ofp_version >= OFP14_VERSION) {
5047 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
5050 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
5051 "(\'-O OpenFlow14\')");
5057 /* Function to append Table desc information in a reply list. */
5059 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
5060 struct ovs_list *replies,
5061 enum ofp_version version)
5063 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5065 struct ofp14_table_desc *otd;
5067 start_otd = reply->size;
5068 ofpbuf_put_zeros(reply, sizeof *otd);
5069 if (td->eviction_flags != UINT32_MAX) {
5070 struct ofp14_table_mod_prop_eviction *ote;
5072 ote = ofpbuf_put_zeros(reply, sizeof *ote);
5073 ote->type = htons(OFPTMPT14_EVICTION);
5074 ote->length = htons(sizeof *ote);
5075 ote->flags = htonl(td->eviction_flags);
5077 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5078 struct ofp14_table_mod_prop_vacancy *otv;
5080 otv = ofpbuf_put_zeros(reply, sizeof *otv);
5081 otv->type = htons(OFPTMPT14_VACANCY);
5082 otv->length = htons(sizeof *otv);
5083 otv->vacancy_down = td->table_vacancy.vacancy_down;
5084 otv->vacancy_up = td->table_vacancy.vacancy_up;
5085 otv->vacancy = td->table_vacancy.vacancy;
5088 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5089 otd->length = htons(reply->size - start_otd);
5090 otd->table_id = td->table_id;
5091 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5092 td->eviction, td->vacancy,
5094 ofpmp_postappend(replies, start_otd);
5097 /* This function parses Vacancy property, and decodes the
5098 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5099 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5100 * greater than vacancy_up and also when current vacancy has non-zero
5101 * value. Returns 0 on success. */
5103 parse_table_mod_vacancy_property(struct ofpbuf *property,
5104 struct ofputil_table_mod *tm)
5106 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5108 if (property->size != sizeof *otv) {
5109 return OFPERR_OFPBPC_BAD_LEN;
5111 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5112 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5113 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5114 log_property(false, "Value of vacancy_down is greater than "
5116 return OFPERR_OFPBPC_BAD_VALUE;
5118 if (tm->table_vacancy.vacancy_down > 100 ||
5119 tm->table_vacancy.vacancy_up > 100) {
5120 log_property(false, "Vacancy threshold percentage should not be"
5121 "greater than 100");
5122 return OFPERR_OFPBPC_BAD_VALUE;
5124 tm->table_vacancy.vacancy = otv->vacancy;
5125 if (tm->table_vacancy.vacancy) {
5126 log_property(false, "Vacancy value should be zero for table-mod "
5128 return OFPERR_OFPBPC_BAD_VALUE;
5133 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5134 * table configuration (a table mod, table stats, or table features message),
5135 * returns the table vacancy configuration that it specifies.
5137 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5138 * so for other 'version' this function always returns
5139 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5140 static enum ofputil_table_vacancy
5141 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5143 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5144 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5145 : OFPUTIL_TABLE_VACANCY_OFF);
5149 parse_table_mod_eviction_property(struct ofpbuf *property,
5150 struct ofputil_table_mod *tm)
5152 struct ofp14_table_mod_prop_eviction *ote = property->data;
5154 if (property->size != sizeof *ote) {
5155 return OFPERR_OFPBPC_BAD_LEN;
5158 tm->eviction_flags = ntohl(ote->flags);
5162 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5163 * table configuration (a table mod, table stats, or table features message),
5164 * returns the table eviction configuration that it specifies.
5166 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5167 * so for other 'version' values this function always returns
5168 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5169 static enum ofputil_table_eviction
5170 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5172 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5173 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5174 : OFPUTIL_TABLE_EVICTION_OFF);
5177 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5178 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5179 * 'eviction' values. */
5181 ofputil_encode_table_config(enum ofputil_table_miss miss,
5182 enum ofputil_table_eviction eviction,
5183 enum ofputil_table_vacancy vacancy,
5184 enum ofp_version version)
5186 uint32_t config = 0;
5187 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5188 * information on the crazy evolution of this field. */
5191 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5196 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5198 case OFPUTIL_TABLE_MISS_DEFAULT:
5199 /* Really this shouldn't be used for encoding (the caller should
5200 * provide a specific value) but I can't imagine that defaulting to
5201 * the fall-through case here will hurt. */
5202 case OFPUTIL_TABLE_MISS_CONTROLLER:
5204 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5205 case OFPUTIL_TABLE_MISS_CONTINUE:
5206 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5207 case OFPUTIL_TABLE_MISS_DROP:
5208 return htonl(OFPTC11_TABLE_MISS_DROP);
5213 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5214 * flags, so this is correct. */
5219 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5220 * OFPTC14_VACANCY_EVENTS. */
5221 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5222 config |= OFPTC14_EVICTION;
5224 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5225 config |= OFPTC14_VACANCY_EVENTS;
5227 return htonl(config);
5233 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5234 * table configuration (a table mod, table stats, or table features message),
5235 * returns the table miss configuration that it specifies.
5237 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5238 * other 'version' values this function always returns
5239 * OFPUTIL_TABLE_MISS_DEFAULT. */
5240 static enum ofputil_table_miss
5241 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5243 uint32_t config = ntohl(config_);
5245 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5246 switch (config & OFPTC11_TABLE_MISS_MASK) {
5247 case OFPTC11_TABLE_MISS_CONTROLLER:
5248 return OFPUTIL_TABLE_MISS_CONTROLLER;
5250 case OFPTC11_TABLE_MISS_CONTINUE:
5251 return OFPUTIL_TABLE_MISS_CONTINUE;
5253 case OFPTC11_TABLE_MISS_DROP:
5254 return OFPUTIL_TABLE_MISS_DROP;
5257 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5258 return OFPUTIL_TABLE_MISS_CONTROLLER;
5261 return OFPUTIL_TABLE_MISS_DEFAULT;
5265 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5266 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5268 ofputil_decode_table_mod(const struct ofp_header *oh,
5269 struct ofputil_table_mod *pm)
5274 memset(pm, 0, sizeof *pm);
5275 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5276 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5277 pm->eviction_flags = UINT32_MAX;
5278 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5279 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5280 raw = ofpraw_pull_assert(&b);
5282 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5283 const struct ofp11_table_mod *otm = b.data;
5285 pm->table_id = otm->table_id;
5286 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5287 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5288 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5290 pm->table_id = otm->table_id;
5291 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5292 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5293 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5294 while (b.size > 0) {
5295 struct ofpbuf property;
5299 error = ofputil_pull_property(&b, &property, &type);
5305 case OFPTMPT14_EVICTION:
5306 error = parse_table_mod_eviction_property(&property, pm);
5309 case OFPTMPT14_VACANCY:
5310 error = parse_table_mod_vacancy_property(&property, pm);
5314 error = OFPERR_OFPBRC_BAD_TYPE;
5323 return OFPERR_OFPBRC_BAD_TYPE;
5329 /* Converts the abstract form of a "table mod" message in '*tm' into an
5330 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5331 * buffer owned by the caller. */
5333 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5334 enum ofputil_protocol protocol)
5336 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5339 switch (ofp_version) {
5340 case OFP10_VERSION: {
5341 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5342 "(\'-O OpenFlow11\')");
5347 case OFP13_VERSION: {
5348 struct ofp11_table_mod *otm;
5350 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5351 otm = ofpbuf_put_zeros(b, sizeof *otm);
5352 otm->table_id = tm->table_id;
5353 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5354 tm->vacancy, ofp_version);
5358 case OFP15_VERSION: {
5359 struct ofp14_table_mod *otm;
5360 struct ofp14_table_mod_prop_eviction *ote;
5361 struct ofp14_table_mod_prop_vacancy *otv;
5363 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5364 otm = ofpbuf_put_zeros(b, sizeof *otm);
5365 otm->table_id = tm->table_id;
5366 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5367 tm->vacancy, ofp_version);
5369 if (tm->eviction_flags != UINT32_MAX) {
5370 ote = ofpbuf_put_zeros(b, sizeof *ote);
5371 ote->type = htons(OFPTMPT14_EVICTION);
5372 ote->length = htons(sizeof *ote);
5373 ote->flags = htonl(tm->eviction_flags);
5375 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5376 otv = ofpbuf_put_zeros(b, sizeof *otv);
5377 otv->type = htons(OFPTMPT14_VACANCY);
5378 otv->length = htons(sizeof *otv);
5379 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5380 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5391 /* ofputil_role_request */
5393 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5394 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5395 * OFPERR_* value. */
5397 ofputil_decode_role_message(const struct ofp_header *oh,
5398 struct ofputil_role_request *rr)
5403 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5404 raw = ofpraw_pull_assert(&b);
5406 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5407 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5408 const struct ofp12_role_request *orr = b.msg;
5410 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5411 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5412 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5413 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5414 return OFPERR_OFPRRFC_BAD_ROLE;
5417 rr->role = ntohl(orr->role);
5418 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5419 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5420 : orr->generation_id == OVS_BE64_MAX) {
5421 rr->have_generation_id = false;
5422 rr->generation_id = 0;
5424 rr->have_generation_id = true;
5425 rr->generation_id = ntohll(orr->generation_id);
5427 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5428 raw == OFPRAW_NXT_ROLE_REPLY) {
5429 const struct nx_role_request *nrr = b.msg;
5431 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5432 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5433 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5435 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5436 nrr->role != htonl(NX_ROLE_MASTER) &&
5437 nrr->role != htonl(NX_ROLE_SLAVE)) {
5438 return OFPERR_OFPRRFC_BAD_ROLE;
5441 rr->role = ntohl(nrr->role) + 1;
5442 rr->have_generation_id = false;
5443 rr->generation_id = 0;
5451 /* Returns an encoded form of a role reply suitable for the "request" in a
5452 * buffer owned by the caller. */
5454 ofputil_encode_role_reply(const struct ofp_header *request,
5455 const struct ofputil_role_request *rr)
5460 raw = ofpraw_decode_assert(request);
5461 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5462 struct ofp12_role_request *orr;
5464 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5465 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5467 orr->role = htonl(rr->role);
5468 orr->generation_id = htonll(rr->have_generation_id
5471 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5472 struct nx_role_request *nrr;
5474 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5475 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5476 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5478 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5479 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5480 nrr->role = htonl(rr->role - 1);
5488 /* Encodes "role status" message 'status' for sending in the given
5489 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5490 * otherwise a null pointer. */
5492 ofputil_encode_role_status(const struct ofputil_role_status *status,
5493 enum ofputil_protocol protocol)
5495 enum ofp_version version;
5497 version = ofputil_protocol_to_ofp_version(protocol);
5498 if (version >= OFP14_VERSION) {
5499 struct ofp14_role_status *rstatus;
5502 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5504 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5505 rstatus->role = htonl(status->role);
5506 rstatus->reason = status->reason;
5507 rstatus->generation_id = htonll(status->generation_id);
5516 ofputil_decode_role_status(const struct ofp_header *oh,
5517 struct ofputil_role_status *rs)
5521 const struct ofp14_role_status *r;
5523 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5524 raw = ofpraw_pull_assert(&b);
5525 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5528 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5529 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5530 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5531 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5532 return OFPERR_OFPRRFC_BAD_ROLE;
5535 rs->role = ntohl(r->role);
5536 rs->generation_id = ntohll(r->generation_id);
5537 rs->reason = r->reason;
5542 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5543 * 'protocol' must be for OpenFlow 1.4 or later. */
5545 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5546 enum ofputil_protocol protocol)
5548 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5549 struct ofpbuf *inner;
5551 switch (rf->reason) {
5552 case OFPRFR_GROUP_MOD:
5553 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5556 case OFPRFR_METER_MOD:
5557 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5560 case OFPRFR_N_REASONS:
5565 struct ofp_header *inner_oh = inner->data;
5566 inner_oh->xid = rf->xid;
5567 inner_oh->length = htons(inner->size);
5569 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5570 ofp_version, htonl(0),
5572 ofpbuf_put(outer, inner->data, inner->size);
5573 ofpbuf_delete(inner);
5578 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5579 * form into '*rf' and returns 0, and the caller is later responsible for
5580 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5581 * failure, returns an ofperr and '*rf' is indeterminate. */
5583 ofputil_decode_requestforward(const struct ofp_header *outer,
5584 struct ofputil_requestforward *rf)
5589 ofpbuf_use_const(&b, outer, ntohs(outer->length));
5591 /* Skip past outer message. */
5592 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5593 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5595 /* Validate inner message. */
5596 if (b.size < sizeof(struct ofp_header)) {
5597 return OFPERR_OFPBFC_MSG_BAD_LEN;
5599 const struct ofp_header *inner = b.data;
5600 unsigned int inner_len = ntohs(inner->length);
5601 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5602 return OFPERR_OFPBFC_MSG_BAD_LEN;
5604 if (inner->version != outer->version) {
5605 return OFPERR_OFPBRC_BAD_VERSION;
5608 /* Parse inner message. */
5610 error = ofptype_decode(&type, inner);
5615 rf->xid = inner->xid;
5616 if (type == OFPTYPE_GROUP_MOD) {
5617 rf->reason = OFPRFR_GROUP_MOD;
5618 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5619 error = ofputil_decode_group_mod(inner, rf->group_mod);
5621 free(rf->group_mod);
5624 } else if (type == OFPTYPE_METER_MOD) {
5625 rf->reason = OFPRFR_METER_MOD;
5626 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5627 ofpbuf_init(&rf->bands, 64);
5628 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5630 free(rf->meter_mod);
5631 ofpbuf_uninit(&rf->bands);
5635 return OFPERR_OFPBFC_MSG_UNSUP;
5641 /* Frees the content of 'rf', which should have been initialized through a
5642 * successful call to ofputil_decode_requestforward(). */
5644 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5650 switch (rf->reason) {
5651 case OFPRFR_GROUP_MOD:
5652 ofputil_uninit_group_mod(rf->group_mod);
5653 free(rf->group_mod);
5656 case OFPRFR_METER_MOD:
5657 ofpbuf_uninit(&rf->bands);
5658 free(rf->meter_mod);
5661 case OFPRFR_N_REASONS:
5668 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5669 * matched and a field that must be wildcarded. This function returns a bitmap
5670 * that contains both kinds of fields. */
5671 static struct mf_bitmap
5672 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5674 struct mf_bitmap wc = features->match;
5675 bitmap_not(wc.bm, MFF_N_IDS);
5676 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5680 struct ofp10_wc_map {
5681 enum ofp10_flow_wildcards wc10;
5682 enum mf_field_id mf;
5685 static const struct ofp10_wc_map ofp10_wc_map[] = {
5686 { OFPFW10_IN_PORT, MFF_IN_PORT },
5687 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5688 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5689 { OFPFW10_DL_DST, MFF_ETH_DST},
5690 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5691 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5692 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5693 { OFPFW10_TP_DST, MFF_TCP_DST },
5694 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5695 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5696 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5697 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5701 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5703 const struct ofp10_wc_map *p;
5706 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5707 if (bitmap_is_set(fields->bm, p->mf)) {
5714 static struct mf_bitmap
5715 mf_bitmap_from_of10(ovs_be32 wc10_)
5717 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5718 const struct ofp10_wc_map *p;
5719 uint32_t wc10 = ntohl(wc10_);
5721 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5722 if (wc10 & p->wc10) {
5723 bitmap_set1(fields.bm, p->mf);
5730 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5731 const struct ofputil_table_features *features,
5734 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5735 struct ofp10_table_stats *out;
5737 out = ofpbuf_put_zeros(buf, sizeof *out);
5738 out->table_id = features->table_id;
5739 ovs_strlcpy(out->name, features->name, sizeof out->name);
5740 out->wildcards = mf_bitmap_to_of10(&wc);
5741 out->max_entries = htonl(features->max_entries);
5742 out->active_count = htonl(stats->active_count);
5743 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5744 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5747 struct ofp11_wc_map {
5748 enum ofp11_flow_match_fields wc11;
5749 enum mf_field_id mf;
5752 static const struct ofp11_wc_map ofp11_wc_map[] = {
5753 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5754 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5755 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5756 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5757 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5758 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5759 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5760 { OFPFMF11_TP_DST, MFF_TCP_DST },
5761 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5762 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5763 /* I don't know what OFPFMF11_TYPE means. */
5764 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5765 { OFPFMF11_DL_DST, MFF_ETH_DST },
5766 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5767 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5768 { OFPFMF11_METADATA, MFF_METADATA },
5772 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5774 const struct ofp11_wc_map *p;
5777 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5778 if (bitmap_is_set(fields->bm, p->mf)) {
5785 static struct mf_bitmap
5786 mf_bitmap_from_of11(ovs_be32 wc11_)
5788 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5789 const struct ofp11_wc_map *p;
5790 uint32_t wc11 = ntohl(wc11_);
5792 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5793 if (wc11 & p->wc11) {
5794 bitmap_set1(fields.bm, p->mf);
5801 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5802 const struct ofputil_table_features *features,
5805 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5806 struct ofp11_table_stats *out;
5808 out = ofpbuf_put_zeros(buf, sizeof *out);
5809 out->table_id = features->table_id;
5810 ovs_strlcpy(out->name, features->name, sizeof out->name);
5811 out->wildcards = mf_bitmap_to_of11(&wc);
5812 out->match = mf_bitmap_to_of11(&features->match);
5813 out->instructions = ovsinst_bitmap_to_openflow(
5814 features->nonmiss.instructions, OFP11_VERSION);
5815 out->write_actions = ofpact_bitmap_to_openflow(
5816 features->nonmiss.write.ofpacts, OFP11_VERSION);
5817 out->apply_actions = ofpact_bitmap_to_openflow(
5818 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5819 out->config = htonl(features->miss_config);
5820 out->max_entries = htonl(features->max_entries);
5821 out->active_count = htonl(stats->active_count);
5822 out->lookup_count = htonll(stats->lookup_count);
5823 out->matched_count = htonll(stats->matched_count);
5827 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5828 const struct ofputil_table_features *features,
5831 struct ofp12_table_stats *out;
5833 out = ofpbuf_put_zeros(buf, sizeof *out);
5834 out->table_id = features->table_id;
5835 ovs_strlcpy(out->name, features->name, sizeof out->name);
5836 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5837 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5839 out->write_actions = ofpact_bitmap_to_openflow(
5840 features->nonmiss.write.ofpacts, OFP12_VERSION);
5841 out->apply_actions = ofpact_bitmap_to_openflow(
5842 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5843 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5844 &features->nonmiss.write.set_fields, OFP12_VERSION);
5845 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5846 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5847 out->metadata_match = features->metadata_match;
5848 out->metadata_write = features->metadata_write;
5849 out->instructions = ovsinst_bitmap_to_openflow(
5850 features->nonmiss.instructions, OFP12_VERSION);
5851 out->config = ofputil_encode_table_config(features->miss_config,
5852 OFPUTIL_TABLE_EVICTION_DEFAULT,
5853 OFPUTIL_TABLE_VACANCY_DEFAULT,
5855 out->max_entries = htonl(features->max_entries);
5856 out->active_count = htonl(stats->active_count);
5857 out->lookup_count = htonll(stats->lookup_count);
5858 out->matched_count = htonll(stats->matched_count);
5862 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5865 struct ofp13_table_stats *out;
5867 out = ofpbuf_put_zeros(buf, sizeof *out);
5868 out->table_id = stats->table_id;
5869 out->active_count = htonl(stats->active_count);
5870 out->lookup_count = htonll(stats->lookup_count);
5871 out->matched_count = htonll(stats->matched_count);
5875 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5877 return ofpraw_alloc_stats_reply(request, 0);
5881 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5882 const struct ofputil_table_stats *stats,
5883 const struct ofputil_table_features *features)
5885 struct ofp_header *oh = reply->header;
5887 ovs_assert(stats->table_id == features->table_id);
5889 switch ((enum ofp_version) oh->version) {
5891 ofputil_put_ofp10_table_stats(stats, features, reply);
5895 ofputil_put_ofp11_table_stats(stats, features, reply);
5899 ofputil_put_ofp12_table_stats(stats, features, reply);
5905 ofputil_put_ofp13_table_stats(stats, reply);
5914 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5915 struct ofputil_table_stats *stats,
5916 struct ofputil_table_features *features)
5918 struct ofp10_table_stats *ots;
5920 ots = ofpbuf_try_pull(msg, sizeof *ots);
5922 return OFPERR_OFPBRC_BAD_LEN;
5925 features->table_id = ots->table_id;
5926 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5927 features->max_entries = ntohl(ots->max_entries);
5928 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5930 stats->table_id = ots->table_id;
5931 stats->active_count = ntohl(ots->active_count);
5932 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5933 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5939 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5940 struct ofputil_table_stats *stats,
5941 struct ofputil_table_features *features)
5943 struct ofp11_table_stats *ots;
5945 ots = ofpbuf_try_pull(msg, sizeof *ots);
5947 return OFPERR_OFPBRC_BAD_LEN;
5950 features->table_id = ots->table_id;
5951 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5952 features->max_entries = ntohl(ots->max_entries);
5953 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5954 ots->instructions, OFP11_VERSION);
5955 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5956 ots->write_actions, OFP11_VERSION);
5957 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5958 ots->write_actions, OFP11_VERSION);
5959 features->miss = features->nonmiss;
5960 features->miss_config = ofputil_decode_table_miss(ots->config,
5962 features->match = mf_bitmap_from_of11(ots->match);
5963 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5964 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5966 stats->table_id = ots->table_id;
5967 stats->active_count = ntohl(ots->active_count);
5968 stats->lookup_count = ntohll(ots->lookup_count);
5969 stats->matched_count = ntohll(ots->matched_count);
5975 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5976 struct ofputil_table_stats *stats,
5977 struct ofputil_table_features *features)
5979 struct ofp12_table_stats *ots;
5981 ots = ofpbuf_try_pull(msg, sizeof *ots);
5983 return OFPERR_OFPBRC_BAD_LEN;
5986 features->table_id = ots->table_id;
5987 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5988 features->metadata_match = ots->metadata_match;
5989 features->metadata_write = ots->metadata_write;
5990 features->miss_config = ofputil_decode_table_miss(ots->config,
5992 features->max_entries = ntohl(ots->max_entries);
5994 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5995 ots->instructions, OFP12_VERSION);
5996 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5997 ots->write_actions, OFP12_VERSION);
5998 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5999 ots->apply_actions, OFP12_VERSION);
6000 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
6001 ots->write_setfields, OFP12_VERSION);
6002 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
6003 ots->apply_setfields, OFP12_VERSION);
6004 features->miss = features->nonmiss;
6006 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
6007 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
6009 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
6011 stats->table_id = ots->table_id;
6012 stats->active_count = ntohl(ots->active_count);
6013 stats->lookup_count = ntohll(ots->lookup_count);
6014 stats->matched_count = ntohll(ots->matched_count);
6020 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
6021 struct ofputil_table_stats *stats,
6022 struct ofputil_table_features *features)
6024 struct ofp13_table_stats *ots;
6026 ots = ofpbuf_try_pull(msg, sizeof *ots);
6028 return OFPERR_OFPBRC_BAD_LEN;
6031 features->table_id = ots->table_id;
6033 stats->table_id = ots->table_id;
6034 stats->active_count = ntohl(ots->active_count);
6035 stats->lookup_count = ntohll(ots->lookup_count);
6036 stats->matched_count = ntohll(ots->matched_count);
6042 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
6043 struct ofputil_table_stats *stats,
6044 struct ofputil_table_features *features)
6046 const struct ofp_header *oh;
6049 ofpraw_pull_assert(msg);
6057 memset(stats, 0, sizeof *stats);
6058 memset(features, 0, sizeof *features);
6059 features->supports_eviction = -1;
6060 features->supports_vacancy_events = -1;
6062 switch ((enum ofp_version) oh->version) {
6064 return ofputil_decode_ofp10_table_stats(msg, stats, features);
6067 return ofputil_decode_ofp11_table_stats(msg, stats, features);
6070 return ofputil_decode_ofp12_table_stats(msg, stats, features);
6075 return ofputil_decode_ofp13_table_stats(msg, stats, features);
6082 /* ofputil_flow_monitor_request */
6084 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
6085 * ofputil_flow_monitor_request in 'rq'.
6087 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6088 * message. Calling this function multiple times for a single 'msg' iterates
6089 * through the requests. The caller must initially leave 'msg''s layer
6090 * pointers null and not modify them between calls.
6092 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6093 * otherwise an OFPERR_* value. */
6095 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6098 struct nx_flow_monitor_request *nfmr;
6102 ofpraw_pull_assert(msg);
6109 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6111 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6112 "leftover bytes at end", msg->size);
6113 return OFPERR_OFPBRC_BAD_LEN;
6116 flags = ntohs(nfmr->flags);
6117 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6118 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6119 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6120 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6122 return OFPERR_OFPMOFC_BAD_FLAGS;
6125 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6126 return OFPERR_NXBRC_MUST_BE_ZERO;
6129 rq->id = ntohl(nfmr->id);
6131 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6132 rq->table_id = nfmr->table_id;
6134 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6138 ofputil_append_flow_monitor_request(
6139 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6141 struct nx_flow_monitor_request *nfmr;
6146 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6149 start_ofs = msg->size;
6150 ofpbuf_put_zeros(msg, sizeof *nfmr);
6151 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6153 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6154 nfmr->id = htonl(rq->id);
6155 nfmr->flags = htons(rq->flags);
6156 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6157 nfmr->match_len = htons(match_len);
6158 nfmr->table_id = rq->table_id;
6161 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6162 * into an abstract ofputil_flow_update in 'update'. The caller must have
6163 * initialized update->match to point to space allocated for a match.
6165 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6166 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6167 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6168 * will point into the 'ofpacts' buffer.
6170 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6171 * this function multiple times for a single 'msg' iterates through the
6172 * updates. The caller must initially leave 'msg''s layer pointers null and
6173 * not modify them between calls.
6175 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6176 * otherwise an OFPERR_* value. */
6178 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6179 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6181 struct nx_flow_update_header *nfuh;
6182 unsigned int length;
6183 struct ofp_header *oh;
6186 ofpraw_pull_assert(msg);
6193 if (msg->size < sizeof(struct nx_flow_update_header)) {
6200 update->event = ntohs(nfuh->event);
6201 length = ntohs(nfuh->length);
6202 if (length > msg->size || length % 8) {
6206 if (update->event == NXFME_ABBREV) {
6207 struct nx_flow_update_abbrev *nfua;
6209 if (length != sizeof *nfua) {
6213 nfua = ofpbuf_pull(msg, sizeof *nfua);
6214 update->xid = nfua->xid;
6216 } else if (update->event == NXFME_ADDED
6217 || update->event == NXFME_DELETED
6218 || update->event == NXFME_MODIFIED) {
6219 struct nx_flow_update_full *nfuf;
6220 unsigned int actions_len;
6221 unsigned int match_len;
6224 if (length < sizeof *nfuf) {
6228 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6229 match_len = ntohs(nfuf->match_len);
6230 if (sizeof *nfuf + match_len > length) {
6234 update->reason = ntohs(nfuf->reason);
6235 update->idle_timeout = ntohs(nfuf->idle_timeout);
6236 update->hard_timeout = ntohs(nfuf->hard_timeout);
6237 update->table_id = nfuf->table_id;
6238 update->cookie = nfuf->cookie;
6239 update->priority = ntohs(nfuf->priority);
6241 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6246 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6247 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6253 update->ofpacts = ofpacts->data;
6254 update->ofpacts_len = ofpacts->size;
6257 VLOG_WARN_RL(&bad_ofmsg_rl,
6258 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6259 ntohs(nfuh->event));
6260 return OFPERR_NXBRC_FM_BAD_EVENT;
6264 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6265 "leftover bytes at end", msg->size);
6266 return OFPERR_OFPBRC_BAD_LEN;
6270 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6272 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6274 return ntohl(cancel->id);
6278 ofputil_encode_flow_monitor_cancel(uint32_t id)
6280 struct nx_flow_monitor_cancel *nfmc;
6283 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6284 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6285 nfmc->id = htonl(id);
6290 ofputil_start_flow_update(struct ovs_list *replies)
6294 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6298 list_push_back(replies, &msg->list_node);
6302 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6303 struct ovs_list *replies)
6305 enum ofp_version version = ofpmp_version(replies);
6306 struct nx_flow_update_header *nfuh;
6310 msg = ofpbuf_from_list(list_back(replies));
6311 start_ofs = msg->size;
6313 if (update->event == NXFME_ABBREV) {
6314 struct nx_flow_update_abbrev *nfua;
6316 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6317 nfua->xid = update->xid;
6319 struct nx_flow_update_full *nfuf;
6322 ofpbuf_put_zeros(msg, sizeof *nfuf);
6323 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6324 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6326 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6327 nfuf->reason = htons(update->reason);
6328 nfuf->priority = htons(update->priority);
6329 nfuf->idle_timeout = htons(update->idle_timeout);
6330 nfuf->hard_timeout = htons(update->hard_timeout);
6331 nfuf->match_len = htons(match_len);
6332 nfuf->table_id = update->table_id;
6333 nfuf->cookie = update->cookie;
6336 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6337 nfuh->length = htons(msg->size - start_ofs);
6338 nfuh->event = htons(update->event);
6340 ofpmp_postappend(replies, start_ofs);
6344 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6345 enum ofputil_protocol protocol)
6347 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6351 size = po->ofpacts_len;
6352 if (po->buffer_id == UINT32_MAX) {
6353 size += po->packet_len;
6356 switch (ofp_version) {
6357 case OFP10_VERSION: {
6358 struct ofp10_packet_out *opo;
6361 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6362 ofpbuf_put_zeros(msg, sizeof *opo);
6363 actions_ofs = msg->size;
6364 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6368 opo->buffer_id = htonl(po->buffer_id);
6369 opo->in_port = htons(ofp_to_u16(po->in_port));
6370 opo->actions_len = htons(msg->size - actions_ofs);
6378 case OFP15_VERSION: {
6379 struct ofp11_packet_out *opo;
6382 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6383 ofpbuf_put_zeros(msg, sizeof *opo);
6384 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6387 opo->buffer_id = htonl(po->buffer_id);
6388 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6389 opo->actions_len = htons(len);
6397 if (po->buffer_id == UINT32_MAX) {
6398 ofpbuf_put(msg, po->packet, po->packet_len);
6401 ofpmsg_update_length(msg);
6406 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6408 make_echo_request(enum ofp_version ofp_version)
6410 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6414 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6415 * OFPT_ECHO_REQUEST message in 'rq'. */
6417 make_echo_reply(const struct ofp_header *rq)
6419 struct ofpbuf rq_buf;
6420 struct ofpbuf *reply;
6422 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6423 ofpraw_pull_assert(&rq_buf);
6425 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
6426 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6431 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6435 switch (ofp_version) {
6441 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6445 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6452 return ofpraw_alloc(type, ofp_version, 0);
6456 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
6458 switch (flags & OFPC_FRAG_MASK) {
6459 case OFPC_FRAG_NORMAL: return "normal";
6460 case OFPC_FRAG_DROP: return "drop";
6461 case OFPC_FRAG_REASM: return "reassemble";
6462 case OFPC_FRAG_NX_MATCH: return "nx-match";
6469 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
6471 if (!strcasecmp(s, "normal")) {
6472 *flags = OFPC_FRAG_NORMAL;
6473 } else if (!strcasecmp(s, "drop")) {
6474 *flags = OFPC_FRAG_DROP;
6475 } else if (!strcasecmp(s, "reassemble")) {
6476 *flags = OFPC_FRAG_REASM;
6477 } else if (!strcasecmp(s, "nx-match")) {
6478 *flags = OFPC_FRAG_NX_MATCH;
6485 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6486 * port number and stores the latter in '*ofp10_port', for the purpose of
6487 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6488 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6490 * See the definition of OFP11_MAX for an explanation of the mapping. */
6492 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6494 uint32_t ofp11_port_h = ntohl(ofp11_port);
6496 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6497 *ofp10_port = u16_to_ofp(ofp11_port_h);
6499 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6500 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6503 *ofp10_port = OFPP_NONE;
6504 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6505 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6506 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6507 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6508 return OFPERR_OFPBAC_BAD_OUT_PORT;
6512 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6513 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6515 * See the definition of OFP11_MAX for an explanation of the mapping. */
6517 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6519 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6520 ? ofp_to_u16(ofp10_port)
6521 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6524 #define OFPUTIL_NAMED_PORTS \
6525 OFPUTIL_NAMED_PORT(IN_PORT) \
6526 OFPUTIL_NAMED_PORT(TABLE) \
6527 OFPUTIL_NAMED_PORT(NORMAL) \
6528 OFPUTIL_NAMED_PORT(FLOOD) \
6529 OFPUTIL_NAMED_PORT(ALL) \
6530 OFPUTIL_NAMED_PORT(CONTROLLER) \
6531 OFPUTIL_NAMED_PORT(LOCAL) \
6532 OFPUTIL_NAMED_PORT(ANY) \
6533 OFPUTIL_NAMED_PORT(UNSET)
6535 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6536 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6537 OFPUTIL_NAMED_PORTS \
6538 OFPUTIL_NAMED_PORT(NONE)
6540 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6541 * integer or, for reserved ports, the standard OpenFlow name for the port
6544 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6545 * or name. The caller should issue an error message in this case, because
6546 * this function usually does not. (This gives the caller an opportunity to
6547 * look up the port name another way, e.g. by contacting the switch and listing
6548 * the names of all its ports).
6550 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6551 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6552 * range as described in include/openflow/openflow-1.1.h. */
6554 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6556 unsigned int port32; /* int is at least 32 bits wide. */
6559 VLOG_WARN("Negative value %s is not a valid port number.", s);
6563 if (str_to_uint(s, 10, &port32)) {
6564 if (port32 < ofp_to_u16(OFPP_MAX)) {
6566 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6567 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6568 "be translated to %u when talking to an OF1.1 or "
6569 "later controller", port32, port32 + OFPP11_OFFSET);
6570 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6571 char name[OFP_MAX_PORT_NAME_LEN];
6573 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6574 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6575 "for compatibility with OpenFlow 1.1 and later",
6577 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6578 VLOG_WARN("port %u is outside the supported range 0 through "
6579 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6580 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6583 port32 -= OFPP11_OFFSET;
6586 *portp = u16_to_ofp(port32);
6593 static const struct pair pairs[] = {
6594 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6595 OFPUTIL_NAMED_PORTS_WITH_NONE
6596 #undef OFPUTIL_NAMED_PORT
6598 const struct pair *p;
6600 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6601 if (!strcasecmp(s, p->name)) {
6610 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6611 * Most ports' string representation is just the port number, but for special
6612 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6614 ofputil_format_port(ofp_port_t port, struct ds *s)
6616 char name[OFP_MAX_PORT_NAME_LEN];
6618 ofputil_port_to_string(port, name, sizeof name);
6619 ds_put_cstr(s, name);
6622 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6623 * representation of OpenFlow port number 'port'. Most ports are represented
6624 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6625 * by name, e.g. "LOCAL". */
6627 ofputil_port_to_string(ofp_port_t port,
6628 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6631 #define OFPUTIL_NAMED_PORT(NAME) \
6633 ovs_strlcpy(namebuf, #NAME, bufsize); \
6636 #undef OFPUTIL_NAMED_PORT
6639 snprintf(namebuf, bufsize, "%"PRIu16, port);
6644 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6645 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6646 * (either "ANY" or "ALL").
6648 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6651 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6653 if (!strcasecmp(s, "any")) {
6654 *group_idp = OFPG_ANY;
6655 } else if (!strcasecmp(s, "all")) {
6656 *group_idp = OFPG_ALL;
6657 } else if (!str_to_uint(s, 10, group_idp)) {
6658 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6659 "32-bit nonnegative integers or the keywords ANY or "
6667 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6668 * Most groups' string representation is just the number, but for special
6669 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6671 ofputil_format_group(uint32_t group_id, struct ds *s)
6673 char name[MAX_GROUP_NAME_LEN];
6675 ofputil_group_to_string(group_id, name, sizeof name);
6676 ds_put_cstr(s, name);
6680 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6681 * representation of OpenFlow group ID 'group_id'. Most group are represented
6682 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6683 * by name, e.g. "ALL". */
6685 ofputil_group_to_string(uint32_t group_id,
6686 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6690 ovs_strlcpy(namebuf, "ALL", bufsize);
6694 ovs_strlcpy(namebuf, "ANY", bufsize);
6698 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6703 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6704 * 'ofp_version', tries to pull the first element from the array. If
6705 * successful, initializes '*pp' with an abstract representation of the
6706 * port and returns 0. If no ports remain to be decoded, returns EOF.
6707 * On an error, returns a positive OFPERR_* value. */
6709 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6710 struct ofputil_phy_port *pp)
6712 memset(pp, 0, sizeof *pp);
6714 switch (ofp_version) {
6715 case OFP10_VERSION: {
6716 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6717 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6721 case OFP13_VERSION: {
6722 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6723 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6727 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6734 ofputil_normalize_match__(struct match *match, bool may_log)
6737 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6738 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6739 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6740 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6741 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6742 MAY_ARP_THA = 1 << 5, /* arp_tha */
6743 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6744 MAY_ND_TARGET = 1 << 7, /* nd_target */
6745 MAY_MPLS = 1 << 8, /* mpls label and tc */
6748 struct flow_wildcards wc;
6750 /* Figure out what fields may be matched. */
6751 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6752 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6753 if (match->flow.nw_proto == IPPROTO_TCP ||
6754 match->flow.nw_proto == IPPROTO_UDP ||
6755 match->flow.nw_proto == IPPROTO_SCTP ||
6756 match->flow.nw_proto == IPPROTO_ICMP) {
6757 may_match |= MAY_TP_ADDR;
6759 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6760 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6761 if (match->flow.nw_proto == IPPROTO_TCP ||
6762 match->flow.nw_proto == IPPROTO_UDP ||
6763 match->flow.nw_proto == IPPROTO_SCTP) {
6764 may_match |= MAY_TP_ADDR;
6765 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6766 may_match |= MAY_TP_ADDR;
6767 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6768 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6769 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6770 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6773 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6774 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6775 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6776 } else if (eth_type_mpls(match->flow.dl_type)) {
6777 may_match = MAY_MPLS;
6782 /* Clear the fields that may not be matched. */
6784 if (!(may_match & MAY_NW_ADDR)) {
6785 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6787 if (!(may_match & MAY_TP_ADDR)) {
6788 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6790 if (!(may_match & MAY_NW_PROTO)) {
6791 wc.masks.nw_proto = 0;
6793 if (!(may_match & MAY_IPVx)) {
6794 wc.masks.nw_tos = 0;
6795 wc.masks.nw_ttl = 0;
6797 if (!(may_match & MAY_ARP_SHA)) {
6798 WC_UNMASK_FIELD(&wc, arp_sha);
6800 if (!(may_match & MAY_ARP_THA)) {
6801 WC_UNMASK_FIELD(&wc, arp_tha);
6803 if (!(may_match & MAY_IPV6)) {
6804 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6805 wc.masks.ipv6_label = htonl(0);
6807 if (!(may_match & MAY_ND_TARGET)) {
6808 wc.masks.nd_target = in6addr_any;
6810 if (!(may_match & MAY_MPLS)) {
6811 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6814 /* Log any changes. */
6815 if (!flow_wildcards_equal(&wc, &match->wc)) {
6816 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6817 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6820 match_zero_wildcarded_fields(match);
6823 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6824 VLOG_INFO("normalization changed ofp_match, details:");
6825 VLOG_INFO(" pre: %s", pre);
6826 VLOG_INFO("post: %s", post);
6833 /* "Normalizes" the wildcards in 'match'. That means:
6835 * 1. If the type of level N is known, then only the valid fields for that
6836 * level may be specified. For example, ARP does not have a TOS field,
6837 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6838 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6839 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6842 * 2. If the type of level N is not known (or not understood by Open
6843 * vSwitch), then no fields at all for that level may be specified. For
6844 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6845 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6848 * If this function changes 'match', it logs a rate-limited informational
6851 ofputil_normalize_match(struct match *match)
6853 ofputil_normalize_match__(match, true);
6856 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6857 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6858 * sense for use on flows received from elsewhere (so that a bug in the program
6859 * that sent them can be reported and corrected). */
6861 ofputil_normalize_match_quiet(struct match *match)
6863 ofputil_normalize_match__(match, false);
6866 /* Parses a key or a key-value pair from '*stringp'.
6868 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6869 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6870 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6871 * are substrings of '*stringp' created by replacing some of its bytes by null
6872 * terminators. Returns true.
6874 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6875 * NULL and returns false. */
6877 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6879 char *pos, *key, *value;
6883 pos += strspn(pos, ", \t\r\n");
6885 *keyp = *valuep = NULL;
6890 key_len = strcspn(pos, ":=(, \t\r\n");
6891 if (key[key_len] == ':' || key[key_len] == '=') {
6892 /* The value can be separated by a colon. */
6895 value = key + key_len + 1;
6896 value_len = strcspn(value, ", \t\r\n");
6897 pos = value + value_len + (value[value_len] != '\0');
6898 value[value_len] = '\0';
6899 } else if (key[key_len] == '(') {
6900 /* The value can be surrounded by balanced parentheses. The outermost
6901 * set of parentheses is removed. */
6905 value = key + key_len + 1;
6906 for (value_len = 0; level > 0; value_len++) {
6907 switch (value[value_len]) {
6921 value[value_len - 1] = '\0';
6922 pos = value + value_len;
6924 /* There might be no value at all. */
6925 value = key + key_len; /* Will become the empty string below. */
6926 pos = key + key_len + (key[key_len] != '\0');
6928 key[key_len] = '\0';
6936 /* Encode a dump ports request for 'port', the encoded message
6937 * will be for OpenFlow version 'ofp_version'. Returns message
6938 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6940 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6942 struct ofpbuf *request;
6944 switch (ofp_version) {
6945 case OFP10_VERSION: {
6946 struct ofp10_port_stats_request *req;
6947 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6948 req = ofpbuf_put_zeros(request, sizeof *req);
6949 req->port_no = htons(ofp_to_u16(port));
6956 case OFP15_VERSION: {
6957 struct ofp11_port_stats_request *req;
6958 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6959 req = ofpbuf_put_zeros(request, sizeof *req);
6960 req->port_no = ofputil_port_to_ofp11(port);
6971 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6972 struct ofp10_port_stats *ps10)
6974 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6975 memset(ps10->pad, 0, sizeof ps10->pad);
6976 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6977 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6978 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6979 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6980 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6981 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6982 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6983 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6984 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6985 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6986 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6987 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6991 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6992 struct ofp11_port_stats *ps11)
6994 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6995 memset(ps11->pad, 0, sizeof ps11->pad);
6996 ps11->rx_packets = htonll(ops->stats.rx_packets);
6997 ps11->tx_packets = htonll(ops->stats.tx_packets);
6998 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6999 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
7000 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
7001 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
7002 ps11->rx_errors = htonll(ops->stats.rx_errors);
7003 ps11->tx_errors = htonll(ops->stats.tx_errors);
7004 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7005 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
7006 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7007 ps11->collisions = htonll(ops->stats.collisions);
7011 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
7012 struct ofp13_port_stats *ps13)
7014 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
7015 ps13->duration_sec = htonl(ops->duration_sec);
7016 ps13->duration_nsec = htonl(ops->duration_nsec);
7020 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
7021 struct ovs_list *replies)
7023 struct ofp14_port_stats_prop_ethernet *eth;
7024 struct ofp14_port_stats *ps14;
7025 struct ofpbuf *reply;
7027 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
7029 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
7030 ps14->length = htons(sizeof *ps14 + sizeof *eth);
7031 memset(ps14->pad, 0, sizeof ps14->pad);
7032 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
7033 ps14->duration_sec = htonl(ops->duration_sec);
7034 ps14->duration_nsec = htonl(ops->duration_nsec);
7035 ps14->rx_packets = htonll(ops->stats.rx_packets);
7036 ps14->tx_packets = htonll(ops->stats.tx_packets);
7037 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
7038 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
7039 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
7040 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
7041 ps14->rx_errors = htonll(ops->stats.rx_errors);
7042 ps14->tx_errors = htonll(ops->stats.tx_errors);
7044 eth = ofpbuf_put_uninit(reply, sizeof *eth);
7045 eth->type = htons(OFPPSPT14_ETHERNET);
7046 eth->length = htons(sizeof *eth);
7047 memset(eth->pad, 0, sizeof eth->pad);
7048 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7049 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
7050 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7051 eth->collisions = htonll(ops->stats.collisions);
7054 /* Encode a ports stat for 'ops' and append it to 'replies'. */
7056 ofputil_append_port_stat(struct ovs_list *replies,
7057 const struct ofputil_port_stats *ops)
7059 switch (ofpmp_version(replies)) {
7060 case OFP13_VERSION: {
7061 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7062 ofputil_port_stats_to_ofp13(ops, reply);
7066 case OFP11_VERSION: {
7067 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7068 ofputil_port_stats_to_ofp11(ops, reply);
7072 case OFP10_VERSION: {
7073 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7074 ofputil_port_stats_to_ofp10(ops, reply);
7080 ofputil_append_ofp14_port_stats(ops, replies);
7089 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7090 const struct ofp10_port_stats *ps10)
7092 memset(ops, 0, sizeof *ops);
7094 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7095 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7096 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7097 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7098 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7099 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7100 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7101 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7102 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7103 ops->stats.rx_frame_errors =
7104 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7105 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7106 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7107 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7108 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7114 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7115 const struct ofp11_port_stats *ps11)
7119 memset(ops, 0, sizeof *ops);
7120 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7125 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7126 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7127 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7128 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7129 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7130 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7131 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7132 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7133 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7134 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7135 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7136 ops->stats.collisions = ntohll(ps11->collisions);
7137 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7143 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7144 const struct ofp13_port_stats *ps13)
7146 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7148 ops->duration_sec = ntohl(ps13->duration_sec);
7149 ops->duration_nsec = ntohl(ps13->duration_nsec);
7155 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7156 struct ofputil_port_stats *ops)
7158 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7160 if (payload->size != sizeof *eth) {
7161 return OFPERR_OFPBPC_BAD_LEN;
7164 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7165 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7166 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7167 ops->stats.collisions = ntohll(eth->collisions);
7173 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7176 const struct ofp14_port_stats *ps14;
7177 struct ofpbuf properties;
7181 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7183 return OFPERR_OFPBRC_BAD_LEN;
7186 len = ntohs(ps14->length);
7187 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7188 return OFPERR_OFPBRC_BAD_LEN;
7190 len -= sizeof *ps14;
7191 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
7193 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7198 ops->duration_sec = ntohl(ps14->duration_sec);
7199 ops->duration_nsec = ntohl(ps14->duration_nsec);
7200 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7201 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7202 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7203 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7204 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7205 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7206 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7207 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7208 ops->stats.rx_frame_errors = UINT64_MAX;
7209 ops->stats.rx_over_errors = UINT64_MAX;
7210 ops->stats.rx_crc_errors = UINT64_MAX;
7211 ops->stats.collisions = UINT64_MAX;
7213 while (properties.size > 0) {
7214 struct ofpbuf payload;
7218 error = ofputil_pull_property(&properties, &payload, &type);
7224 case OFPPSPT14_ETHERNET:
7225 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7229 log_property(true, "unknown port stats property %"PRIu16, type);
7242 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7245 ofputil_count_port_stats(const struct ofp_header *oh)
7247 struct ofputil_port_stats ps;
7251 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7252 ofpraw_pull_assert(&b);
7253 while (!ofputil_decode_port_stats(&ps, &b)) {
7259 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7260 * ofputil_port_stats in 'ps'.
7262 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7263 * message. Calling this function multiple times for a single 'msg' iterates
7264 * through the replies. The caller must initially leave 'msg''s layer pointers
7265 * null and not modify them between calls.
7267 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7268 * otherwise a positive errno value. */
7270 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7275 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7276 : ofpraw_pull(&raw, msg));
7283 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7284 return ofputil_pull_ofp14_port_stats(ps, msg);
7285 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7286 const struct ofp13_port_stats *ps13;
7288 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7292 return ofputil_port_stats_from_ofp13(ps, ps13);
7293 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7294 const struct ofp11_port_stats *ps11;
7296 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7300 return ofputil_port_stats_from_ofp11(ps, ps11);
7301 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7302 const struct ofp10_port_stats *ps10;
7304 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7308 return ofputil_port_stats_from_ofp10(ps, ps10);
7314 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7315 "bytes at end", msg->size);
7316 return OFPERR_OFPBRC_BAD_LEN;
7319 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7320 * port number and stores the latter in '*ofp10_port'.
7321 * Returns 0 if successful, otherwise an OFPERR_* number. */
7323 ofputil_decode_port_stats_request(const struct ofp_header *request,
7324 ofp_port_t *ofp10_port)
7326 switch ((enum ofp_version)request->version) {
7331 case OFP11_VERSION: {
7332 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7333 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7336 case OFP10_VERSION: {
7337 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7338 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7347 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7349 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7351 struct ofputil_bucket *bucket;
7353 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7354 free(bucket->ofpacts);
7359 /* Clones 'bucket' and its ofpacts data */
7360 static struct ofputil_bucket *
7361 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7363 struct ofputil_bucket *new;
7365 new = xmemdup(bucket, sizeof *bucket);
7366 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7371 /* Clones each of the buckets in the list 'src' appending them
7372 * in turn to 'dest' which should be an initialised list.
7373 * An exception is that if the pointer value of a bucket in 'src'
7374 * matches 'skip' then it is not cloned or appended to 'dest'.
7375 * This allows all of 'src' or 'all of 'src' except 'skip' to
7376 * be cloned and appended to 'dest'. */
7378 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7379 const struct ofputil_bucket *skip)
7381 struct ofputil_bucket *bucket;
7383 LIST_FOR_EACH (bucket, list_node, src) {
7384 struct ofputil_bucket *new_bucket;
7386 if (bucket == skip) {
7390 new_bucket = ofputil_bucket_clone_data(bucket);
7391 list_push_back(dest, &new_bucket->list_node);
7395 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7396 * Returns the first bucket found or NULL if no buckets are found. */
7397 struct ofputil_bucket *
7398 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7400 struct ofputil_bucket *bucket;
7402 if (bucket_id > OFPG15_BUCKET_MAX) {
7406 LIST_FOR_EACH (bucket, list_node, buckets) {
7407 if (bucket->bucket_id == bucket_id) {
7415 /* Returns true if more than one bucket in the list 'buckets'
7416 * have the same bucket id. Returns false otherwise. */
7418 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7420 struct ofputil_bucket *i, *j;
7422 LIST_FOR_EACH (i, list_node, buckets) {
7423 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7427 if (i->bucket_id == j->bucket_id) {
7436 /* Returns the bucket at the front of the list 'buckets'.
7437 * Undefined if 'buckets is empty. */
7438 struct ofputil_bucket *
7439 ofputil_bucket_list_front(const struct ovs_list *buckets)
7441 static struct ofputil_bucket *bucket;
7443 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7448 /* Returns the bucket at the back of the list 'buckets'.
7449 * Undefined if 'buckets is empty. */
7450 struct ofputil_bucket *
7451 ofputil_bucket_list_back(const struct ovs_list *buckets)
7453 static struct ofputil_bucket *bucket;
7455 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7460 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7461 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7464 * Group statistics include packet and byte counts for each group. */
7466 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7469 struct ofpbuf *request;
7471 switch (ofp_version) {
7473 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7474 "(\'-O OpenFlow11\')");
7479 case OFP15_VERSION: {
7480 struct ofp11_group_stats_request *req;
7481 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7482 req = ofpbuf_put_zeros(request, sizeof *req);
7483 req->group_id = htonl(group_id);
7494 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7496 ofputil_bucket_list_destroy(&gd->buckets);
7497 free(&gd->props.fields);
7500 /* Decodes the OpenFlow group description request in 'oh', returning the group
7501 * whose description is requested, or OFPG_ALL if stats for all groups was
7504 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7506 struct ofpbuf request;
7509 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7510 raw = ofpraw_pull_assert(&request);
7511 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7513 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7514 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7515 return ntohl(*group_id);
7521 /* Returns an OpenFlow group description request for OpenFlow version
7522 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7523 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7526 * Group descriptions include the bucket and action configuration for each
7529 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7532 struct ofpbuf *request;
7534 switch (ofp_version) {
7536 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7537 "(\'-O OpenFlow11\')");
7542 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7545 case OFP15_VERSION:{
7546 struct ofp15_group_desc_request *req;
7547 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7549 req = ofpbuf_put_zeros(request, sizeof *req);
7550 req->group_id = htonl(group_id);
7561 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7562 struct ofp11_bucket_counter bucket_cnts[])
7566 for (i = 0; i < gs->n_buckets; i++) {
7567 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7568 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7573 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7574 struct ofp11_group_stats *gs11, size_t length,
7575 struct ofp11_bucket_counter bucket_cnts[])
7577 memset(gs11, 0, sizeof *gs11);
7578 gs11->length = htons(length);
7579 gs11->group_id = htonl(gs->group_id);
7580 gs11->ref_count = htonl(gs->ref_count);
7581 gs11->packet_count = htonll(gs->packet_count);
7582 gs11->byte_count = htonll(gs->byte_count);
7583 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7587 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7588 struct ofp13_group_stats *gs13, size_t length,
7589 struct ofp11_bucket_counter bucket_cnts[])
7591 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7592 gs13->duration_sec = htonl(gs->duration_sec);
7593 gs13->duration_nsec = htonl(gs->duration_nsec);
7597 /* Encodes 'gs' properly for the format of the list of group statistics
7598 * replies already begun in 'replies' and appends it to the list. 'replies'
7599 * must have originally been initialized with ofpmp_init(). */
7601 ofputil_append_group_stats(struct ovs_list *replies,
7602 const struct ofputil_group_stats *gs)
7604 size_t bucket_counter_size;
7605 struct ofp11_bucket_counter *bucket_counters;
7608 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7610 switch (ofpmp_version(replies)) {
7612 case OFP12_VERSION:{
7613 struct ofp11_group_stats *gs11;
7615 length = sizeof *gs11 + bucket_counter_size;
7616 gs11 = ofpmp_append(replies, length);
7617 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7618 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7624 case OFP15_VERSION: {
7625 struct ofp13_group_stats *gs13;
7627 length = sizeof *gs13 + bucket_counter_size;
7628 gs13 = ofpmp_append(replies, length);
7629 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7630 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7639 /* Returns an OpenFlow group features request for OpenFlow version
7642 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7644 struct ofpbuf *request = NULL;
7646 switch (ofp_version) {
7649 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7650 "(\'-O OpenFlow12\')");
7655 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7665 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7666 * group features request 'request'. */
7668 ofputil_encode_group_features_reply(
7669 const struct ofputil_group_features *features,
7670 const struct ofp_header *request)
7672 struct ofp12_group_features_stats *ogf;
7673 struct ofpbuf *reply;
7676 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7677 request->version, request->xid, 0);
7678 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7679 ogf->types = htonl(features->types);
7680 ogf->capabilities = htonl(features->capabilities);
7681 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7682 ogf->max_groups[i] = htonl(features->max_groups[i]);
7683 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7690 /* Decodes group features reply 'oh' into 'features'. */
7692 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7693 struct ofputil_group_features *features)
7695 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7698 features->types = ntohl(ogf->types);
7699 features->capabilities = ntohl(ogf->capabilities);
7700 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7701 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7702 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7703 ogf->actions[i], oh->version);
7707 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7708 * group ID and stores the latter in '*group_id'.
7709 * Returns 0 if successful, otherwise an OFPERR_* number. */
7711 ofputil_decode_group_stats_request(const struct ofp_header *request,
7714 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7715 *group_id = ntohl(gsr11->group_id);
7719 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7720 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7721 * caller to eventually free.
7723 * Multiple group stats replies can be packed into a single OpenFlow message.
7724 * Calling this function multiple times for a single 'msg' iterates through the
7725 * replies. The caller must initially leave 'msg''s layer pointers null and
7726 * not modify them between calls.
7728 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7729 * otherwise a positive errno value. */
7731 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7732 struct ofputil_group_stats *gs)
7734 struct ofp11_bucket_counter *obc;
7735 struct ofp11_group_stats *ogs11;
7742 gs->bucket_stats = NULL;
7743 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7744 : ofpraw_pull(&raw, msg));
7753 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7754 base_len = sizeof *ogs11;
7755 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7756 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7757 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7758 struct ofp13_group_stats *ogs13;
7760 base_len = sizeof *ogs13;
7761 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7764 gs->duration_sec = ntohl(ogs13->duration_sec);
7765 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7774 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7775 ofpraw_get_name(raw), msg->size);
7776 return OFPERR_OFPBRC_BAD_LEN;
7778 length = ntohs(ogs11->length);
7779 if (length < sizeof base_len) {
7780 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7781 ofpraw_get_name(raw), length);
7782 return OFPERR_OFPBRC_BAD_LEN;
7785 gs->group_id = ntohl(ogs11->group_id);
7786 gs->ref_count = ntohl(ogs11->ref_count);
7787 gs->packet_count = ntohll(ogs11->packet_count);
7788 gs->byte_count = ntohll(ogs11->byte_count);
7790 gs->n_buckets = (length - base_len) / sizeof *obc;
7791 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7793 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7794 ofpraw_get_name(raw), msg->size);
7795 return OFPERR_OFPBRC_BAD_LEN;
7798 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7799 for (i = 0; i < gs->n_buckets; i++) {
7800 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7801 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7808 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7809 struct ofpbuf *openflow, enum ofp_version ofp_version)
7811 struct ofp11_bucket *ob;
7814 start = openflow->size;
7815 ofpbuf_put_zeros(openflow, sizeof *ob);
7816 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7817 openflow, ofp_version);
7818 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7819 ob->len = htons(openflow->size - start);
7820 ob->weight = htons(bucket->weight);
7821 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7822 ob->watch_group = htonl(bucket->watch_group);
7826 ofputil_put_ofp15_group_bucket_prop_weight(ovs_be16 weight,
7827 struct ofpbuf *openflow)
7830 struct ofp15_group_bucket_prop_weight *prop;
7832 start_ofs = start_property(openflow, OFPGBPT15_WEIGHT);
7833 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7834 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7835 prop->weight = weight;
7836 end_property(openflow, start_ofs);
7840 ofputil_put_ofp15_group_bucket_prop_watch(ovs_be32 watch, uint16_t type,
7841 struct ofpbuf *openflow)
7844 struct ofp15_group_bucket_prop_watch *prop;
7846 start_ofs = start_property(openflow, type);
7847 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7848 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7849 prop->watch = watch;
7850 end_property(openflow, start_ofs);
7854 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7855 uint32_t bucket_id, enum ofp11_group_type group_type,
7856 struct ofpbuf *openflow, enum ofp_version ofp_version)
7858 struct ofp15_bucket *ob;
7859 size_t start, actions_start, actions_len;
7861 start = openflow->size;
7862 ofpbuf_put_zeros(openflow, sizeof *ob);
7864 actions_start = openflow->size;
7865 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7866 openflow, ofp_version);
7867 actions_len = openflow->size - actions_start;
7869 if (group_type == OFPGT11_SELECT) {
7870 ofputil_put_ofp15_group_bucket_prop_weight(htons(bucket->weight),
7873 if (bucket->watch_port != OFPP_ANY) {
7874 ovs_be32 port = ofputil_port_to_ofp11(bucket->watch_port);
7875 ofputil_put_ofp15_group_bucket_prop_watch(port,
7876 OFPGBPT15_WATCH_PORT,
7879 if (bucket->watch_group != OFPG_ANY) {
7880 ovs_be32 group = htonl(bucket->watch_group);
7881 ofputil_put_ofp15_group_bucket_prop_watch(group,
7882 OFPGBPT15_WATCH_GROUP,
7886 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7887 ob->len = htons(openflow->size - start);
7888 ob->action_array_len = htons(actions_len);
7889 ob->bucket_id = htonl(bucket_id);
7893 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7894 const struct ofputil_group_props *gp,
7895 struct ofpbuf *openflow)
7897 struct ntr_group_prop_selection_method *prop;
7900 start = openflow->size;
7901 ofpbuf_put_zeros(openflow, sizeof *prop);
7902 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7903 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7904 prop->type = htons(OFPGPT15_EXPERIMENTER);
7905 prop->experimenter = htonl(NTR_VENDOR_ID);
7906 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7907 strcpy(prop->selection_method, gp->selection_method);
7908 prop->selection_method_param = htonll(gp->selection_method_param);
7909 end_property(openflow, start);
7913 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7914 const struct ovs_list *buckets,
7915 struct ovs_list *replies,
7916 enum ofp_version version)
7918 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7919 struct ofp11_group_desc_stats *ogds;
7920 struct ofputil_bucket *bucket;
7923 start_ogds = reply->size;
7924 ofpbuf_put_zeros(reply, sizeof *ogds);
7925 LIST_FOR_EACH (bucket, list_node, buckets) {
7926 ofputil_put_ofp11_bucket(bucket, reply, version);
7928 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7929 ogds->length = htons(reply->size - start_ogds);
7930 ogds->type = gds->type;
7931 ogds->group_id = htonl(gds->group_id);
7933 ofpmp_postappend(replies, start_ogds);
7937 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
7938 const struct ovs_list *buckets,
7939 struct ovs_list *replies,
7940 enum ofp_version version)
7942 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7943 struct ofp15_group_desc_stats *ogds;
7944 struct ofputil_bucket *bucket;
7945 size_t start_ogds, start_buckets;
7947 start_ogds = reply->size;
7948 ofpbuf_put_zeros(reply, sizeof *ogds);
7949 start_buckets = reply->size;
7950 LIST_FOR_EACH (bucket, list_node, buckets) {
7951 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
7952 gds->type, reply, version);
7954 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7955 ogds->type = gds->type;
7956 ogds->group_id = htonl(gds->group_id);
7957 ogds->bucket_list_len = htons(reply->size - start_buckets);
7959 /* Add group properties */
7960 if (gds->props.selection_method[0]) {
7961 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
7964 ogds->length = htons(reply->size - start_ogds);
7966 ofpmp_postappend(replies, start_ogds);
7969 /* Appends a group stats reply that contains the data in 'gds' to those already
7970 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7971 * initialized with ofpmp_init(). */
7973 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7974 const struct ovs_list *buckets,
7975 struct ovs_list *replies)
7977 enum ofp_version version = ofpmp_version(replies);
7985 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
7989 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
7999 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
8000 enum ofp_version version, struct ovs_list *buckets)
8002 struct ofp11_bucket *ob;
8003 uint32_t bucket_id = 0;
8006 while (buckets_length > 0) {
8007 struct ofputil_bucket *bucket;
8008 struct ofpbuf ofpacts;
8012 ob = (buckets_length >= sizeof *ob
8013 ? ofpbuf_try_pull(msg, sizeof *ob)
8016 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
8018 return OFPERR_OFPGMFC_BAD_BUCKET;
8021 ob_len = ntohs(ob->len);
8022 if (ob_len < sizeof *ob) {
8023 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8024 "%"PRIuSIZE" is not valid", ob_len);
8025 return OFPERR_OFPGMFC_BAD_BUCKET;
8026 } else if (ob_len > buckets_length) {
8027 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8028 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
8029 ob_len, buckets_length);
8030 return OFPERR_OFPGMFC_BAD_BUCKET;
8032 buckets_length -= ob_len;
8034 ofpbuf_init(&ofpacts, 0);
8035 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
8038 ofpbuf_uninit(&ofpacts);
8039 ofputil_bucket_list_destroy(buckets);
8043 bucket = xzalloc(sizeof *bucket);
8044 bucket->weight = ntohs(ob->weight);
8045 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
8047 ofpbuf_uninit(&ofpacts);
8048 ofputil_bucket_list_destroy(buckets);
8049 return OFPERR_OFPGMFC_BAD_WATCH;
8051 bucket->watch_group = ntohl(ob->watch_group);
8052 bucket->bucket_id = bucket_id++;
8054 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8055 bucket->ofpacts_len = ofpacts.size;
8056 list_push_back(buckets, &bucket->list_node);
8063 parse_ofp15_group_bucket_prop_weight(const struct ofpbuf *payload,
8066 struct ofp15_group_bucket_prop_weight *prop = payload->data;
8068 if (payload->size != sizeof *prop) {
8069 log_property(false, "OpenFlow bucket weight property length "
8070 "%u is not valid", payload->size);
8071 return OFPERR_OFPBPC_BAD_LEN;
8074 *weight = prop->weight;
8080 parse_ofp15_group_bucket_prop_watch(const struct ofpbuf *payload,
8083 struct ofp15_group_bucket_prop_watch *prop = payload->data;
8085 if (payload->size != sizeof *prop) {
8086 log_property(false, "OpenFlow bucket watch port or group "
8087 "property length %u is not valid", payload->size);
8088 return OFPERR_OFPBPC_BAD_LEN;
8091 *watch = prop->watch;
8097 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
8098 enum ofp_version version, uint8_t group_type,
8099 struct ovs_list *buckets)
8101 struct ofp15_bucket *ob;
8104 while (buckets_length > 0) {
8105 struct ofputil_bucket *bucket = NULL;
8106 struct ofpbuf ofpacts;
8107 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
8108 struct ofpbuf properties;
8109 size_t ob_len, actions_len, properties_len;
8110 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
8111 ovs_be32 watch_group = htonl(OFPG_ANY);
8112 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
8114 ofpbuf_init(&ofpacts, 0);
8116 ob = ofpbuf_try_pull(msg, sizeof *ob);
8118 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
8119 " leftover bytes", buckets_length);
8123 ob_len = ntohs(ob->len);
8124 actions_len = ntohs(ob->action_array_len);
8126 if (ob_len < sizeof *ob) {
8127 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8128 "%"PRIuSIZE" is not valid", ob_len);
8130 } else if (ob_len > buckets_length) {
8131 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8132 "%"PRIuSIZE" exceeds remaining buckets data size %"
8133 PRIuSIZE, ob_len, buckets_length);
8135 } else if (actions_len > ob_len - sizeof *ob) {
8136 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
8137 "length %"PRIuSIZE" exceeds remaining bucket "
8138 "data size %"PRIuSIZE, actions_len,
8139 ob_len - sizeof *ob);
8142 buckets_length -= ob_len;
8144 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
8150 properties_len = ob_len - sizeof *ob - actions_len;
8151 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8154 while (properties.size > 0) {
8155 struct ofpbuf payload;
8158 err = ofputil_pull_property(&properties, &payload, &type);
8164 case OFPGBPT15_WEIGHT:
8165 err = parse_ofp15_group_bucket_prop_weight(&payload, &weight);
8168 case OFPGBPT15_WATCH_PORT:
8169 err = parse_ofp15_group_bucket_prop_watch(&payload,
8173 case OFPGBPT15_WATCH_GROUP:
8174 err = parse_ofp15_group_bucket_prop_watch(&payload,
8179 log_property(false, "unknown group bucket property %"PRIu16,
8181 err = OFPERR_OFPBPC_BAD_TYPE;
8190 bucket = xzalloc(sizeof *bucket);
8192 bucket->weight = ntohs(weight);
8193 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8195 err = OFPERR_OFPGMFC_BAD_WATCH;
8198 bucket->watch_group = ntohl(watch_group);
8199 bucket->bucket_id = ntohl(ob->bucket_id);
8200 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8201 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8203 err = OFPERR_OFPGMFC_BAD_BUCKET;
8207 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8208 bucket->ofpacts_len = ofpacts.size;
8209 list_push_back(buckets, &bucket->list_node);
8215 ofpbuf_uninit(&ofpacts);
8216 ofputil_bucket_list_destroy(buckets);
8220 if (ofputil_bucket_check_duplicate_id(buckets)) {
8221 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8222 ofputil_bucket_list_destroy(buckets);
8223 return OFPERR_OFPGMFC_BAD_BUCKET;
8230 ofputil_init_group_properties(struct ofputil_group_props *gp)
8232 memset(gp, 0, sizeof *gp);
8236 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8237 enum ofp11_group_type group_type,
8238 enum ofp15_group_mod_command group_cmd,
8239 struct ofputil_group_props *gp)
8241 struct ntr_group_prop_selection_method *prop = payload->data;
8242 size_t fields_len, method_len;
8245 switch (group_type) {
8246 case OFPGT11_SELECT:
8249 case OFPGT11_INDIRECT:
8251 log_property(false, "ntr selection method property is only allowed "
8252 "for select groups");
8253 return OFPERR_OFPBPC_BAD_VALUE;
8258 switch (group_cmd) {
8260 case OFPGC15_MODIFY:
8262 case OFPGC15_DELETE:
8263 case OFPGC15_INSERT_BUCKET:
8264 case OFPGC15_REMOVE_BUCKET:
8265 log_property(false, "ntr selection method property is only allowed "
8266 "for add and delete group modifications");
8267 return OFPERR_OFPBPC_BAD_VALUE;
8272 if (payload->size < sizeof *prop) {
8273 log_property(false, "ntr selection method property length "
8274 "%u is not valid", payload->size);
8275 return OFPERR_OFPBPC_BAD_LEN;
8278 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8280 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8281 log_property(false, "ntr selection method is not null terminated");
8282 return OFPERR_OFPBPC_BAD_VALUE;
8285 if (strcmp("hash", prop->selection_method)) {
8286 log_property(false, "ntr selection method '%s' is not supported",
8287 prop->selection_method);
8288 return OFPERR_OFPBPC_BAD_VALUE;
8291 strcpy(gp->selection_method, prop->selection_method);
8292 gp->selection_method_param = ntohll(prop->selection_method_param);
8294 if (!method_len && gp->selection_method_param) {
8295 log_property(false, "ntr selection method parameter is non-zero but "
8296 "selection method is empty");
8297 return OFPERR_OFPBPC_BAD_VALUE;
8300 ofpbuf_pull(payload, sizeof *prop);
8302 fields_len = ntohs(prop->length) - sizeof *prop;
8303 if (!method_len && fields_len) {
8304 log_property(false, "ntr selection method parameter is zero "
8305 "but fields are provided");
8306 return OFPERR_OFPBPC_BAD_VALUE;
8309 error = oxm_pull_field_array(payload->data, fields_len,
8312 log_property(false, "ntr selection method fields are invalid");
8320 parse_group_prop_ntr(struct ofpbuf *payload, uint32_t exp_type,
8321 enum ofp11_group_type group_type,
8322 enum ofp15_group_mod_command group_cmd,
8323 struct ofputil_group_props *gp)
8328 case NTRT_SELECTION_METHOD:
8329 error = parse_group_prop_ntr_selection_method(payload, group_type,
8334 log_property(false, "unknown group property ntr experimenter type "
8335 "%"PRIu32, exp_type);
8336 error = OFPERR_OFPBPC_BAD_TYPE;
8344 parse_ofp15_group_prop_exp(struct ofpbuf *payload,
8345 enum ofp11_group_type group_type,
8346 enum ofp15_group_mod_command group_cmd,
8347 struct ofputil_group_props *gp)
8349 struct ofp_prop_experimenter *prop = payload->data;
8350 uint16_t experimenter;
8354 if (payload->size < sizeof *prop) {
8355 return OFPERR_OFPBPC_BAD_LEN;
8358 experimenter = ntohl(prop->experimenter);
8359 exp_type = ntohl(prop->exp_type);
8361 switch (experimenter) {
8363 case NTR_COMPAT_VENDOR_ID:
8364 error = parse_group_prop_ntr(payload, exp_type, group_type,
8369 log_property(false, "unknown group property experimenter %"PRIu16,
8371 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
8379 parse_ofp15_group_properties(struct ofpbuf *msg,
8380 enum ofp11_group_type group_type,
8381 enum ofp15_group_mod_command group_cmd,
8382 struct ofputil_group_props *gp,
8383 size_t properties_len)
8385 struct ofpbuf properties;
8387 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8390 while (properties.size > 0) {
8391 struct ofpbuf payload;
8395 error = ofputil_pull_property(&properties, &payload, &type);
8401 case OFPGPT15_EXPERIMENTER:
8402 error = parse_ofp15_group_prop_exp(&payload, group_type,
8407 log_property(false, "unknown group property %"PRIu16, type);
8408 error = OFPERR_OFPBPC_BAD_TYPE;
8421 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8423 enum ofp_version version)
8425 struct ofp11_group_desc_stats *ogds;
8429 ofpraw_pull_assert(msg);
8436 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8438 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8439 "leftover bytes at end", msg->size);
8440 return OFPERR_OFPBRC_BAD_LEN;
8442 gd->type = ogds->type;
8443 gd->group_id = ntohl(ogds->group_id);
8445 length = ntohs(ogds->length);
8446 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8447 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8448 "length %"PRIuSIZE, length);
8449 return OFPERR_OFPBRC_BAD_LEN;
8452 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8457 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8459 enum ofp_version version)
8461 struct ofp15_group_desc_stats *ogds;
8462 uint16_t length, bucket_list_len;
8466 ofpraw_pull_assert(msg);
8473 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8475 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8476 "leftover bytes at end", msg->size);
8477 return OFPERR_OFPBRC_BAD_LEN;
8479 gd->type = ogds->type;
8480 gd->group_id = ntohl(ogds->group_id);
8482 length = ntohs(ogds->length);
8483 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8484 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8485 "length %u", length);
8486 return OFPERR_OFPBRC_BAD_LEN;
8489 bucket_list_len = ntohs(ogds->bucket_list_len);
8490 if (length < bucket_list_len + sizeof *ogds) {
8491 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8492 "bucket list length %u", bucket_list_len);
8493 return OFPERR_OFPBRC_BAD_LEN;
8495 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8501 /* By definition group desc messages don't have a group mod command.
8502 * However, parse_group_prop_ntr_selection_method() checks to make sure
8503 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8504 * against group mod messages with other commands supplying
8505 * a NTR selection method group experimenter property.
8506 * Such properties are valid for group desc replies so
8507 * claim that the group mod command is OFPGC15_ADD to
8508 * satisfy the check in parse_group_prop_ntr_selection_method() */
8509 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8510 length - sizeof *ogds - bucket_list_len);
8513 /* Converts a group description reply in 'msg' into an abstract
8514 * ofputil_group_desc in 'gd'.
8516 * Multiple group description replies can be packed into a single OpenFlow
8517 * message. Calling this function multiple times for a single 'msg' iterates
8518 * through the replies. The caller must initially leave 'msg''s layer pointers
8519 * null and not modify them between calls.
8521 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8522 * otherwise a positive errno value. */
8524 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8525 struct ofpbuf *msg, enum ofp_version version)
8527 ofputil_init_group_properties(&gd->props);
8535 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8538 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8547 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8549 ofputil_bucket_list_destroy(&gm->buckets);
8552 static struct ofpbuf *
8553 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8554 const struct ofputil_group_mod *gm)
8557 struct ofp11_group_mod *ogm;
8559 struct ofputil_bucket *bucket;
8561 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8562 start_ogm = b->size;
8563 ofpbuf_put_zeros(b, sizeof *ogm);
8565 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8566 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8568 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8569 ogm->command = htons(gm->command);
8570 ogm->type = gm->type;
8571 ogm->group_id = htonl(gm->group_id);
8576 static struct ofpbuf *
8577 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8578 const struct ofputil_group_mod *gm)
8581 struct ofp15_group_mod *ogm;
8583 struct ofputil_bucket *bucket;
8584 struct id_pool *bucket_ids = NULL;
8586 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8587 start_ogm = b->size;
8588 ofpbuf_put_zeros(b, sizeof *ogm);
8590 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8593 /* Generate a bucket id if none was supplied */
8594 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8596 const struct ofputil_bucket *bkt;
8598 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8600 /* Mark all bucket_ids that are present in gm
8601 * as used in the pool. */
8602 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8603 if (bkt == bucket) {
8606 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8607 id_pool_add(bucket_ids, bkt->bucket_id);
8612 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8616 bucket_id = bucket->bucket_id;
8619 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8621 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8622 ogm->command = htons(gm->command);
8623 ogm->type = gm->type;
8624 ogm->group_id = htonl(gm->group_id);
8625 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8626 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8628 /* Add group properties */
8629 if (gm->props.selection_method[0]) {
8630 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8633 id_pool_destroy(bucket_ids);
8638 bad_group_cmd(enum ofp15_group_mod_command cmd)
8640 const char *opt_version;
8641 const char *version;
8642 const char *cmd_str;
8646 case OFPGC15_MODIFY:
8647 case OFPGC15_DELETE:
8652 case OFPGC15_INSERT_BUCKET:
8653 case OFPGC15_REMOVE_BUCKET:
8664 cmd_str = "add-group";
8667 case OFPGC15_MODIFY:
8668 cmd_str = "mod-group";
8671 case OFPGC15_DELETE:
8672 cmd_str = "del-group";
8675 case OFPGC15_INSERT_BUCKET:
8676 cmd_str = "insert-bucket";
8679 case OFPGC15_REMOVE_BUCKET:
8680 cmd_str = "remove-bucket";
8687 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8688 cmd_str, version, opt_version);
8692 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8693 * 'ofp_version' and returns the message. */
8695 ofputil_encode_group_mod(enum ofp_version ofp_version,
8696 const struct ofputil_group_mod *gm)
8699 switch (ofp_version) {
8701 bad_group_cmd(gm->command);
8707 if (gm->command > OFPGC11_DELETE) {
8708 bad_group_cmd(gm->command);
8710 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8713 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8721 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8722 struct ofputil_group_mod *gm)
8724 const struct ofp11_group_mod *ogm;
8727 ogm = ofpbuf_pull(msg, sizeof *ogm);
8728 gm->command = ntohs(ogm->command);
8729 gm->type = ogm->type;
8730 gm->group_id = ntohl(ogm->group_id);
8731 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8733 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8736 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8738 && ofp_version >= OFP13_VERSION
8739 && gm->command == OFPGC11_DELETE
8740 && !list_is_empty(&gm->buckets)) {
8741 error = OFPERR_OFPGMFC_INVALID_GROUP;
8748 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8749 struct ofputil_group_mod *gm)
8751 const struct ofp15_group_mod *ogm;
8752 uint16_t bucket_list_len;
8753 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8755 ogm = ofpbuf_pull(msg, sizeof *ogm);
8756 gm->command = ntohs(ogm->command);
8757 gm->type = ogm->type;
8758 gm->group_id = ntohl(ogm->group_id);
8760 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8761 switch (gm->command) {
8762 case OFPGC15_REMOVE_BUCKET:
8763 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8767 case OFPGC15_INSERT_BUCKET:
8768 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8769 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8770 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8776 case OFPGC11_MODIFY:
8777 case OFPGC11_DELETE:
8779 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8785 VLOG_WARN_RL(&bad_ofmsg_rl,
8786 "group command bucket id (%u) is out of range",
8787 gm->command_bucket_id);
8788 return OFPERR_OFPGMFC_BAD_BUCKET;
8791 bucket_list_len = ntohs(ogm->bucket_array_len);
8792 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8793 gm->type, &gm->buckets);
8798 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8802 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8803 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8805 ofputil_decode_group_mod(const struct ofp_header *oh,
8806 struct ofputil_group_mod *gm)
8808 enum ofp_version ofp_version = oh->version;
8810 struct ofputil_bucket *bucket;
8813 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
8814 ofpraw_pull_assert(&msg);
8816 ofputil_init_group_properties(&gm->props);
8818 switch (ofp_version)
8824 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8828 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8841 case OFPGT11_INDIRECT:
8842 if (!list_is_singleton(&gm->buckets)) {
8843 return OFPERR_OFPGMFC_INVALID_GROUP;
8847 case OFPGT11_SELECT:
8851 return OFPERR_OFPGMFC_BAD_TYPE;
8854 switch (gm->command) {
8856 case OFPGC11_MODIFY:
8857 case OFPGC11_DELETE:
8858 case OFPGC15_INSERT_BUCKET:
8860 case OFPGC15_REMOVE_BUCKET:
8861 if (!list_is_empty(&gm->buckets)) {
8862 return OFPERR_OFPGMFC_BAD_BUCKET;
8866 return OFPERR_OFPGMFC_BAD_COMMAND;
8869 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8870 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8871 return OFPERR_OFPGMFC_INVALID_GROUP;
8876 case OFPGT11_INDIRECT:
8877 if (ofputil_bucket_has_liveness(bucket)) {
8878 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8881 case OFPGT11_SELECT:
8884 if (!ofputil_bucket_has_liveness(bucket)) {
8885 return OFPERR_OFPGMFC_INVALID_GROUP;
8889 /* Returning BAD TYPE to be consistent
8890 * though gm->type has been checked already. */
8891 return OFPERR_OFPGMFC_BAD_TYPE;
8898 /* Parse a queue status request message into 'oqsr'.
8899 * Returns 0 if successful, otherwise an OFPERR_* number. */
8901 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8902 struct ofputil_queue_stats_request *oqsr)
8904 switch ((enum ofp_version)request->version) {
8909 case OFP11_VERSION: {
8910 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8911 oqsr->queue_id = ntohl(qsr11->queue_id);
8912 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8915 case OFP10_VERSION: {
8916 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8917 oqsr->queue_id = ntohl(qsr10->queue_id);
8918 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8919 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
8920 if (oqsr->port_no == OFPP_ALL) {
8921 oqsr->port_no = OFPP_ANY;
8931 /* Encode a queue stats request for 'oqsr', the encoded message
8932 * will be for OpenFlow version 'ofp_version'. Returns message
8933 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
8935 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
8936 const struct ofputil_queue_stats_request *oqsr)
8938 struct ofpbuf *request;
8940 switch (ofp_version) {
8945 case OFP15_VERSION: {
8946 struct ofp11_queue_stats_request *req;
8947 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
8948 req = ofpbuf_put_zeros(request, sizeof *req);
8949 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
8950 req->queue_id = htonl(oqsr->queue_id);
8953 case OFP10_VERSION: {
8954 struct ofp10_queue_stats_request *req;
8955 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
8956 req = ofpbuf_put_zeros(request, sizeof *req);
8957 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
8958 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
8959 ? OFPP_ALL : oqsr->port_no));
8960 req->queue_id = htonl(oqsr->queue_id);
8970 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
8973 ofputil_count_queue_stats(const struct ofp_header *oh)
8975 struct ofputil_queue_stats qs;
8979 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8980 ofpraw_pull_assert(&b);
8981 while (!ofputil_decode_queue_stats(&qs, &b)) {
8988 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
8989 const struct ofp10_queue_stats *qs10)
8991 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
8992 oqs->queue_id = ntohl(qs10->queue_id);
8993 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
8994 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
8995 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
8996 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
9002 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
9003 const struct ofp11_queue_stats *qs11)
9007 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
9012 oqs->queue_id = ntohl(qs11->queue_id);
9013 oqs->tx_bytes = ntohll(qs11->tx_bytes);
9014 oqs->tx_packets = ntohll(qs11->tx_packets);
9015 oqs->tx_errors = ntohll(qs11->tx_errors);
9016 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
9022 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
9023 const struct ofp13_queue_stats *qs13)
9025 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
9027 oqs->duration_sec = ntohl(qs13->duration_sec);
9028 oqs->duration_nsec = ntohl(qs13->duration_nsec);
9035 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
9038 const struct ofp14_queue_stats *qs14;
9041 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
9043 return OFPERR_OFPBRC_BAD_LEN;
9046 len = ntohs(qs14->length);
9047 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
9048 return OFPERR_OFPBRC_BAD_LEN;
9050 ofpbuf_pull(msg, len - sizeof *qs14);
9052 /* No properties yet defined, so ignore them for now. */
9054 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
9057 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
9058 * ofputil_queue_stats in 'qs'.
9060 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
9061 * message. Calling this function multiple times for a single 'msg' iterates
9062 * through the replies. The caller must initially leave 'msg''s layer pointers
9063 * null and not modify them between calls.
9065 * Returns 0 if successful, EOF if no replies were left in this 'msg',
9066 * otherwise a positive errno value. */
9068 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
9073 error = (msg->header ? ofpraw_decode(&raw, msg->header)
9074 : ofpraw_pull(&raw, msg));
9081 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
9082 return ofputil_pull_ofp14_queue_stats(qs, msg);
9083 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
9084 const struct ofp13_queue_stats *qs13;
9086 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
9090 return ofputil_queue_stats_from_ofp13(qs, qs13);
9091 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
9092 const struct ofp11_queue_stats *qs11;
9094 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
9098 return ofputil_queue_stats_from_ofp11(qs, qs11);
9099 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
9100 const struct ofp10_queue_stats *qs10;
9102 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
9106 return ofputil_queue_stats_from_ofp10(qs, qs10);
9112 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
9113 "bytes at end", msg->size);
9114 return OFPERR_OFPBRC_BAD_LEN;
9118 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
9119 struct ofp10_queue_stats *qs10)
9121 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
9122 memset(qs10->pad, 0, sizeof qs10->pad);
9123 qs10->queue_id = htonl(oqs->queue_id);
9124 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
9125 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
9126 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
9130 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
9131 struct ofp11_queue_stats *qs11)
9133 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
9134 qs11->queue_id = htonl(oqs->queue_id);
9135 qs11->tx_bytes = htonll(oqs->tx_bytes);
9136 qs11->tx_packets = htonll(oqs->tx_packets);
9137 qs11->tx_errors = htonll(oqs->tx_errors);
9141 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
9142 struct ofp13_queue_stats *qs13)
9144 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
9145 if (oqs->duration_sec != UINT32_MAX) {
9146 qs13->duration_sec = htonl(oqs->duration_sec);
9147 qs13->duration_nsec = htonl(oqs->duration_nsec);
9149 qs13->duration_sec = OVS_BE32_MAX;
9150 qs13->duration_nsec = OVS_BE32_MAX;
9155 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
9156 struct ofp14_queue_stats *qs14)
9158 qs14->length = htons(sizeof *qs14);
9159 memset(qs14->pad, 0, sizeof qs14->pad);
9160 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
9164 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
9166 ofputil_append_queue_stat(struct ovs_list *replies,
9167 const struct ofputil_queue_stats *oqs)
9169 switch (ofpmp_version(replies)) {
9170 case OFP13_VERSION: {
9171 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9172 ofputil_queue_stats_to_ofp13(oqs, reply);
9177 case OFP11_VERSION: {
9178 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9179 ofputil_queue_stats_to_ofp11(oqs, reply);
9183 case OFP10_VERSION: {
9184 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9185 ofputil_queue_stats_to_ofp10(oqs, reply);
9190 case OFP15_VERSION: {
9191 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9192 ofputil_queue_stats_to_ofp14(oqs, reply);
9202 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
9203 struct ofputil_bundle_ctrl_msg *msg)
9207 const struct ofp14_bundle_ctrl_msg *m;
9209 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9210 raw = ofpraw_pull_assert(&b);
9211 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
9214 msg->bundle_id = ntohl(m->bundle_id);
9215 msg->type = ntohs(m->type);
9216 msg->flags = ntohs(m->flags);
9222 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9223 struct ofputil_bundle_ctrl_msg *bc)
9225 struct ofpbuf *request;
9226 struct ofp14_bundle_ctrl_msg *m;
9228 switch (ofp_version) {
9233 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9234 "(\'-O OpenFlow14\')");
9237 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9238 m = ofpbuf_put_zeros(request, sizeof *m);
9240 m->bundle_id = htonl(bc->bundle_id);
9241 m->type = htons(bc->type);
9242 m->flags = htons(bc->flags);
9252 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9253 struct ofputil_bundle_ctrl_msg *msg)
9256 struct ofp14_bundle_ctrl_msg *m;
9258 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9259 m = ofpbuf_put_zeros(buf, sizeof *m);
9261 m->bundle_id = htonl(msg->bundle_id);
9262 m->type = htons(msg->type);
9263 m->flags = htons(msg->flags);
9268 /* Return true for bundlable state change requests, false for other messages.
9271 ofputil_is_bundlable(enum ofptype type)
9274 /* Minimum required by OpenFlow 1.4. */
9275 case OFPTYPE_PORT_MOD:
9276 case OFPTYPE_FLOW_MOD:
9279 /* Nice to have later. */
9280 case OFPTYPE_FLOW_MOD_TABLE_ID:
9281 case OFPTYPE_GROUP_MOD:
9282 case OFPTYPE_TABLE_MOD:
9283 case OFPTYPE_METER_MOD:
9284 case OFPTYPE_PACKET_OUT:
9285 case OFPTYPE_NXT_TLV_TABLE_MOD:
9287 /* Not to be bundlable. */
9288 case OFPTYPE_ECHO_REQUEST:
9289 case OFPTYPE_FEATURES_REQUEST:
9290 case OFPTYPE_GET_CONFIG_REQUEST:
9291 case OFPTYPE_SET_CONFIG:
9292 case OFPTYPE_BARRIER_REQUEST:
9293 case OFPTYPE_ROLE_REQUEST:
9294 case OFPTYPE_ECHO_REPLY:
9295 case OFPTYPE_SET_FLOW_FORMAT:
9296 case OFPTYPE_SET_PACKET_IN_FORMAT:
9297 case OFPTYPE_SET_CONTROLLER_ID:
9298 case OFPTYPE_FLOW_AGE:
9299 case OFPTYPE_FLOW_MONITOR_CANCEL:
9300 case OFPTYPE_SET_ASYNC_CONFIG:
9301 case OFPTYPE_GET_ASYNC_REQUEST:
9302 case OFPTYPE_DESC_STATS_REQUEST:
9303 case OFPTYPE_FLOW_STATS_REQUEST:
9304 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9305 case OFPTYPE_TABLE_STATS_REQUEST:
9306 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9307 case OFPTYPE_TABLE_DESC_REQUEST:
9308 case OFPTYPE_PORT_STATS_REQUEST:
9309 case OFPTYPE_QUEUE_STATS_REQUEST:
9310 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9311 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9312 case OFPTYPE_METER_STATS_REQUEST:
9313 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9314 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9315 case OFPTYPE_GROUP_STATS_REQUEST:
9316 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9317 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9318 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9319 case OFPTYPE_BUNDLE_CONTROL:
9320 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9323 case OFPTYPE_FEATURES_REPLY:
9324 case OFPTYPE_GET_CONFIG_REPLY:
9325 case OFPTYPE_PACKET_IN:
9326 case OFPTYPE_FLOW_REMOVED:
9327 case OFPTYPE_PORT_STATUS:
9328 case OFPTYPE_BARRIER_REPLY:
9329 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9330 case OFPTYPE_DESC_STATS_REPLY:
9331 case OFPTYPE_FLOW_STATS_REPLY:
9332 case OFPTYPE_QUEUE_STATS_REPLY:
9333 case OFPTYPE_PORT_STATS_REPLY:
9334 case OFPTYPE_TABLE_STATS_REPLY:
9335 case OFPTYPE_AGGREGATE_STATS_REPLY:
9336 case OFPTYPE_PORT_DESC_STATS_REPLY:
9337 case OFPTYPE_ROLE_REPLY:
9338 case OFPTYPE_FLOW_MONITOR_PAUSED:
9339 case OFPTYPE_FLOW_MONITOR_RESUMED:
9340 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9341 case OFPTYPE_GET_ASYNC_REPLY:
9342 case OFPTYPE_GROUP_STATS_REPLY:
9343 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9344 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9345 case OFPTYPE_METER_STATS_REPLY:
9346 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9347 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9348 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9349 case OFPTYPE_TABLE_DESC_REPLY:
9350 case OFPTYPE_ROLE_STATUS:
9351 case OFPTYPE_REQUESTFORWARD:
9352 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9353 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9361 ofputil_decode_bundle_add(const struct ofp_header *oh,
9362 struct ofputil_bundle_add_msg *msg,
9363 enum ofptype *type_ptr)
9365 const struct ofp14_bundle_ctrl_msg *m;
9372 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9373 raw = ofpraw_pull_assert(&b);
9374 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9376 m = ofpbuf_pull(&b, sizeof *m);
9377 msg->bundle_id = ntohl(m->bundle_id);
9378 msg->flags = ntohs(m->flags);
9381 if (msg->msg->version != oh->version) {
9382 return OFPERR_NXBFC_BAD_VERSION;
9384 inner_len = ntohs(msg->msg->length);
9385 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9386 return OFPERR_OFPBFC_MSG_BAD_LEN;
9388 if (msg->msg->xid != oh->xid) {
9389 return OFPERR_OFPBFC_MSG_BAD_XID;
9392 /* Reject unbundlable messages. */
9396 error = ofptype_decode(type_ptr, msg->msg);
9398 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9399 "message is unparsable (%s)", ofperr_get_name(error));
9400 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9403 if (!ofputil_is_bundlable(*type_ptr)) {
9404 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9405 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(*type_ptr));
9406 return OFPERR_OFPBFC_MSG_UNSUP;
9413 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9414 struct ofputil_bundle_add_msg *msg)
9416 struct ofpbuf *request;
9417 struct ofp14_bundle_ctrl_msg *m;
9419 /* Must use the same xid as the embedded message. */
9420 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9422 m = ofpbuf_put_zeros(request, sizeof *m);
9424 m->bundle_id = htonl(msg->bundle_id);
9425 m->flags = htons(msg->flags);
9426 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9432 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9434 struct ofputil_tlv_map *map;
9436 LIST_FOR_EACH (map, list_node, mappings) {
9437 struct nx_tlv_map *nx_map;
9439 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9440 nx_map->option_class = htons(map->option_class);
9441 nx_map->option_type = map->option_type;
9442 nx_map->option_len = map->option_len;
9443 nx_map->index = htons(map->index);
9448 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9449 struct ofputil_tlv_table_mod *ttm)
9452 struct nx_tlv_table_mod *nx_ttm;
9454 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9455 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9456 nx_ttm->command = htons(ttm->command);
9457 encode_tlv_table_mappings(b, &ttm->mappings);
9463 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9464 struct ovs_list *mappings)
9466 list_init(mappings);
9469 struct nx_tlv_map *nx_map;
9470 struct ofputil_tlv_map *map;
9472 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9473 map = xmalloc(sizeof *map);
9474 list_push_back(mappings, &map->list_node);
9476 map->option_class = ntohs(nx_map->option_class);
9477 map->option_type = nx_map->option_type;
9479 map->option_len = nx_map->option_len;
9480 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9481 VLOG_WARN_RL(&bad_ofmsg_rl,
9482 "tlv table option length (%u) is not a valid option size",
9484 ofputil_uninit_tlv_table(mappings);
9485 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9488 map->index = ntohs(nx_map->index);
9489 if (map->index >= max_fields) {
9490 VLOG_WARN_RL(&bad_ofmsg_rl,
9491 "tlv table field index (%u) is too large (max %u)",
9492 map->index, max_fields - 1);
9493 ofputil_uninit_tlv_table(mappings);
9494 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9502 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9503 struct ofputil_tlv_table_mod *ttm)
9506 struct nx_tlv_table_mod *nx_ttm;
9508 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9509 ofpraw_pull_assert(&msg);
9511 nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9512 ttm->command = ntohs(nx_ttm->command);
9513 if (ttm->command > NXTTMC_CLEAR) {
9514 VLOG_WARN_RL(&bad_ofmsg_rl,
9515 "tlv table mod command (%u) is out of range",
9517 return OFPERR_NXTTMFC_BAD_COMMAND;
9520 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9525 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9526 struct ofputil_tlv_table_reply *ttr)
9529 struct nx_tlv_table_reply *nx_ttr;
9531 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9532 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9533 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9534 nx_ttr->max_fields = htons(ttr->max_fields);
9536 encode_tlv_table_mappings(b, &ttr->mappings);
9541 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9542 * if successful, otherwise an ofperr.
9544 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9545 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9546 * less than TUN_METADATA_NUM_OPTS. */
9548 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9549 struct ofputil_tlv_table_reply *ttr)
9552 struct nx_tlv_table_reply *nx_ttr;
9554 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9555 ofpraw_pull_assert(&msg);
9557 nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9558 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9559 ttr->max_fields = ntohs(nx_ttr->max_fields);
9561 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9565 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9567 struct ofputil_tlv_map *map;
9569 LIST_FOR_EACH_POP (map, list_node, mappings) {
9574 /* Decodes the OpenFlow "set async config" request and "get async config
9575 * reply" message in '*oh' into an abstract form in 'master' and 'slave'.
9577 * If 'loose' is true, this function ignores properties and values that it does
9578 * not understand, as a controller would want to do when interpreting
9579 * capabilities provided by a switch. If 'loose' is false, this function
9580 * treats unknown properties and values as an error, as a switch would want to
9581 * do when interpreting a configuration request made by a controller.
9583 * Returns 0 if successful, otherwise an OFPERR_* value.
9585 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9586 * the valid range of mask.
9588 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9591 ofputil_decode_set_async_config(const struct ofp_header *oh,
9592 uint32_t master[OAM_N_TYPES],
9593 uint32_t slave[OAM_N_TYPES],
9599 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9600 raw = ofpraw_pull_assert(&b);
9602 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9603 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9604 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9605 const struct nx_async_config *msg = ofpmsg_body(oh);
9607 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
9608 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
9609 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
9611 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
9612 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
9613 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
9615 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9616 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY) {
9618 while (b.size > 0) {
9619 struct ofp14_async_config_prop_reasons *msg;
9620 struct ofpbuf property;
9624 error = ofputil_pull_property(&b, &property, &type);
9629 msg = property.data;
9631 if (property.size != sizeof *msg) {
9632 return OFPERR_OFPBRC_BAD_LEN;
9636 error = ofputil_check_mask(type, ntohl(msg->mask));
9643 case OFPACPT_PACKET_IN_SLAVE:
9644 slave[OAM_PACKET_IN] = ntohl(msg->mask);
9647 case OFPACPT_PACKET_IN_MASTER:
9648 master[OAM_PACKET_IN] = ntohl(msg->mask);
9651 case OFPACPT_PORT_STATUS_SLAVE:
9652 slave[OAM_PORT_STATUS] = ntohl(msg->mask);
9655 case OFPACPT_PORT_STATUS_MASTER:
9656 master[OAM_PORT_STATUS] = ntohl(msg->mask);
9659 case OFPACPT_FLOW_REMOVED_SLAVE:
9660 slave[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9663 case OFPACPT_FLOW_REMOVED_MASTER:
9664 master[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9667 case OFPACPT_ROLE_STATUS_SLAVE:
9668 slave[OAM_ROLE_STATUS] = ntohl(msg->mask);
9671 case OFPACPT_ROLE_STATUS_MASTER:
9672 master[OAM_ROLE_STATUS] = ntohl(msg->mask);
9675 case OFPACPT_TABLE_STATUS_SLAVE:
9676 slave[OAM_TABLE_STATUS] = ntohl(msg->mask);
9679 case OFPACPT_TABLE_STATUS_MASTER:
9680 master[OAM_TABLE_STATUS] = ntohl(msg->mask);
9683 case OFPACPT_REQUESTFORWARD_SLAVE:
9684 slave[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9687 case OFPACPT_REQUESTFORWARD_MASTER:
9688 master[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9692 error = loose ? 0 : OFPERR_OFPACFC_UNSUPPORTED;
9697 return OFPERR_OFPBRC_BAD_VERSION;
9702 /* Append all asynchronous configuration properties in GET_ASYNC_REPLY
9703 * message, describing if various set of asynchronous messages are enabled
9706 ofputil_get_async_reply(struct ofpbuf *buf, const uint32_t master_mask,
9707 const uint32_t slave_mask, const uint32_t type)
9711 for (role = 0; role < 2; role++) {
9712 struct ofp14_async_config_prop_reasons *msg;
9714 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9718 msg->type = (role ? htons(OFPACPT_PACKET_IN_SLAVE)
9719 : htons(OFPACPT_PACKET_IN_MASTER));
9722 case OAM_PORT_STATUS:
9723 msg->type = (role ? htons(OFPACPT_PORT_STATUS_SLAVE)
9724 : htons(OFPACPT_PORT_STATUS_MASTER));
9727 case OAM_FLOW_REMOVED:
9728 msg->type = (role ? htons(OFPACPT_FLOW_REMOVED_SLAVE)
9729 : htons(OFPACPT_FLOW_REMOVED_MASTER));
9732 case OAM_ROLE_STATUS:
9733 msg->type = (role ? htons(OFPACPT_ROLE_STATUS_SLAVE)
9734 : htons(OFPACPT_ROLE_STATUS_MASTER));
9737 case OAM_TABLE_STATUS:
9738 msg->type = (role ? htons(OFPACPT_TABLE_STATUS_SLAVE)
9739 : htons(OFPACPT_TABLE_STATUS_MASTER));
9742 case OAM_REQUESTFORWARD:
9743 msg->type = (role ? htons(OFPACPT_REQUESTFORWARD_SLAVE)
9744 : htons(OFPACPT_REQUESTFORWARD_MASTER));
9748 return OFPERR_OFPBRC_BAD_TYPE;
9750 msg->length = htons(sizeof *msg);
9751 msg->mask = (role ? htonl(slave_mask) : htonl(master_mask));
9757 /* Returns a OpenFlow message that encodes 'asynchronous configuration' properly
9758 * as a reply to get async config request. */
9760 ofputil_encode_get_async_config(const struct ofp_header *oh,
9761 uint32_t master[OAM_N_TYPES],
9762 uint32_t slave[OAM_N_TYPES])
9767 buf = ofpraw_alloc_reply((oh->version < OFP14_VERSION
9768 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9769 : OFPRAW_OFPT14_GET_ASYNC_REPLY), oh, 0);
9771 if (oh->version < OFP14_VERSION) {
9772 struct nx_async_config *msg;
9773 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9775 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
9776 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
9777 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
9779 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
9780 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
9781 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
9782 } else if (oh->version == OFP14_VERSION) {
9783 for (type = 0; type < OAM_N_TYPES; type++) {
9784 ofputil_get_async_reply(buf, master[type], slave[type], type);