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));
212 /* Appends a property to 'msg' whose type is 'type' and whose contents is a
213 * series of property headers, one for each 1-bit in 'bitmap'. */
215 put_bitmap_property(struct ofpbuf *msg, uint16_t type, uint64_t bitmap)
217 size_t start_ofs = start_property(msg, type);
219 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
220 start_property(msg, rightmost_1bit_idx(bitmap));
222 end_property(msg, start_ofs);
225 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
226 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
229 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
230 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
231 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
232 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
235 ofputil_wcbits_to_netmask(int wcbits)
238 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
241 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
242 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
243 * between 0 and 32 inclusive.
245 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
246 * still be in the valid range but isn't otherwise meaningful. */
248 ofputil_netmask_to_wcbits(ovs_be32 netmask)
250 return 32 - ip_count_cidr_bits(netmask);
253 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
254 * flow_wildcards in 'wc' for use in struct match. It is the caller's
255 * responsibility to handle the special case where the flow match's dl_vlan is
256 * set to OFP_VLAN_NONE. */
258 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
260 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35);
262 /* Initialize most of wc. */
263 flow_wildcards_init_catchall(wc);
265 if (!(ofpfw & OFPFW10_IN_PORT)) {
266 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
269 if (!(ofpfw & OFPFW10_NW_TOS)) {
270 wc->masks.nw_tos |= IP_DSCP_MASK;
273 if (!(ofpfw & OFPFW10_NW_PROTO)) {
274 wc->masks.nw_proto = UINT8_MAX;
276 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
277 >> OFPFW10_NW_SRC_SHIFT);
278 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
279 >> OFPFW10_NW_DST_SHIFT);
281 if (!(ofpfw & OFPFW10_TP_SRC)) {
282 wc->masks.tp_src = OVS_BE16_MAX;
284 if (!(ofpfw & OFPFW10_TP_DST)) {
285 wc->masks.tp_dst = OVS_BE16_MAX;
288 if (!(ofpfw & OFPFW10_DL_SRC)) {
289 WC_MASK_FIELD(wc, dl_src);
291 if (!(ofpfw & OFPFW10_DL_DST)) {
292 WC_MASK_FIELD(wc, dl_dst);
294 if (!(ofpfw & OFPFW10_DL_TYPE)) {
295 wc->masks.dl_type = OVS_BE16_MAX;
299 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
300 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
302 if (!(ofpfw & OFPFW10_DL_VLAN)) {
303 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
307 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
309 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
312 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
314 /* Initialize match->wc. */
315 memset(&match->flow, 0, sizeof match->flow);
316 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
318 /* Initialize most of match->flow. */
319 match->flow.nw_src = ofmatch->nw_src;
320 match->flow.nw_dst = ofmatch->nw_dst;
321 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
322 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
323 match->flow.tp_src = ofmatch->tp_src;
324 match->flow.tp_dst = ofmatch->tp_dst;
325 match->flow.dl_src = ofmatch->dl_src;
326 match->flow.dl_dst = ofmatch->dl_dst;
327 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
328 match->flow.nw_proto = ofmatch->nw_proto;
330 /* Translate VLANs. */
331 if (!(ofpfw & OFPFW10_DL_VLAN) &&
332 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
333 /* Match only packets without 802.1Q header.
335 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
337 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
338 * because we can't have a specific PCP without an 802.1Q header.
339 * However, older versions of OVS treated this as matching packets
340 * withut an 802.1Q header, so we do here too. */
341 match->flow.vlan_tci = htons(0);
342 match->wc.masks.vlan_tci = htons(0xffff);
344 ovs_be16 vid, pcp, tci;
347 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
348 hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
350 tci = vid | pcp | htons(VLAN_CFI);
351 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
355 match_zero_wildcarded_fields(match);
358 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
360 ofputil_match_to_ofp10_match(const struct match *match,
361 struct ofp10_match *ofmatch)
363 const struct flow_wildcards *wc = &match->wc;
366 /* Figure out most OpenFlow wildcards. */
368 if (!wc->masks.in_port.ofp_port) {
369 ofpfw |= OFPFW10_IN_PORT;
371 if (!wc->masks.dl_type) {
372 ofpfw |= OFPFW10_DL_TYPE;
374 if (!wc->masks.nw_proto) {
375 ofpfw |= OFPFW10_NW_PROTO;
377 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
378 << OFPFW10_NW_SRC_SHIFT);
379 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
380 << OFPFW10_NW_DST_SHIFT);
381 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
382 ofpfw |= OFPFW10_NW_TOS;
384 if (!wc->masks.tp_src) {
385 ofpfw |= OFPFW10_TP_SRC;
387 if (!wc->masks.tp_dst) {
388 ofpfw |= OFPFW10_TP_DST;
390 if (eth_addr_is_zero(wc->masks.dl_src)) {
391 ofpfw |= OFPFW10_DL_SRC;
393 if (eth_addr_is_zero(wc->masks.dl_dst)) {
394 ofpfw |= OFPFW10_DL_DST;
397 /* Translate VLANs. */
398 ofmatch->dl_vlan = htons(0);
399 ofmatch->dl_vlan_pcp = 0;
400 if (match->wc.masks.vlan_tci == htons(0)) {
401 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
402 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
403 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
404 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
406 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
407 ofpfw |= OFPFW10_DL_VLAN;
409 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
412 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
413 ofpfw |= OFPFW10_DL_VLAN_PCP;
415 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
419 /* Compose most of the match structure. */
420 ofmatch->wildcards = htonl(ofpfw);
421 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
422 ofmatch->dl_src = match->flow.dl_src;
423 ofmatch->dl_dst = match->flow.dl_dst;
424 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
425 ofmatch->nw_src = match->flow.nw_src;
426 ofmatch->nw_dst = match->flow.nw_dst;
427 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
428 ofmatch->nw_proto = match->flow.nw_proto;
429 ofmatch->tp_src = match->flow.tp_src;
430 ofmatch->tp_dst = match->flow.tp_dst;
431 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
432 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
436 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
437 uint16_t *padded_match_len)
439 struct ofp11_match_header *omh = buf->data;
442 if (buf->size < sizeof *omh) {
443 return OFPERR_OFPBMC_BAD_LEN;
446 match_len = ntohs(omh->length);
448 switch (ntohs(omh->type)) {
449 case OFPMT_STANDARD: {
450 struct ofp11_match *om;
452 if (match_len != sizeof *om || buf->size < sizeof *om) {
453 return OFPERR_OFPBMC_BAD_LEN;
455 om = ofpbuf_pull(buf, sizeof *om);
456 if (padded_match_len) {
457 *padded_match_len = match_len;
459 return ofputil_match_from_ofp11_match(om, match);
463 if (padded_match_len) {
464 *padded_match_len = ROUND_UP(match_len, 8);
466 return oxm_pull_match(buf, match);
469 return OFPERR_OFPBMC_BAD_TYPE;
473 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
474 * Returns 0 if successful, otherwise an OFPERR_* value. */
476 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
479 uint16_t wc = ntohl(ofmatch->wildcards);
480 bool ipv4, arp, rarp;
482 match_init_catchall(match);
484 if (!(wc & OFPFW11_IN_PORT)) {
488 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
490 return OFPERR_OFPBMC_BAD_VALUE;
492 match_set_in_port(match, ofp_port);
495 match_set_dl_src_masked(match, ofmatch->dl_src,
496 eth_addr_invert(ofmatch->dl_src_mask));
497 match_set_dl_dst_masked(match, ofmatch->dl_dst,
498 eth_addr_invert(ofmatch->dl_dst_mask));
500 if (!(wc & OFPFW11_DL_VLAN)) {
501 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
502 /* Match only packets without a VLAN tag. */
503 match->flow.vlan_tci = htons(0);
504 match->wc.masks.vlan_tci = OVS_BE16_MAX;
506 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
507 /* Match any packet with a VLAN tag regardless of VID. */
508 match->flow.vlan_tci = htons(VLAN_CFI);
509 match->wc.masks.vlan_tci = htons(VLAN_CFI);
510 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
511 /* Match only packets with the specified VLAN VID. */
512 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
513 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
516 return OFPERR_OFPBMC_BAD_VALUE;
519 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
520 if (ofmatch->dl_vlan_pcp <= 7) {
521 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
523 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
526 return OFPERR_OFPBMC_BAD_VALUE;
532 if (!(wc & OFPFW11_DL_TYPE)) {
533 match_set_dl_type(match,
534 ofputil_dl_type_from_openflow(ofmatch->dl_type));
537 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
538 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
539 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
541 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
542 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
544 return OFPERR_OFPBMC_BAD_VALUE;
547 match_set_nw_dscp(match, ofmatch->nw_tos);
550 if (ipv4 || arp || rarp) {
551 if (!(wc & OFPFW11_NW_PROTO)) {
552 match_set_nw_proto(match, ofmatch->nw_proto);
554 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
555 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
558 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
559 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
560 switch (match->flow.nw_proto) {
562 /* "A.2.3 Flow Match Structures" in OF1.1 says:
564 * The tp_src and tp_dst fields will be ignored unless the
565 * network protocol specified is as TCP, UDP or SCTP.
567 * but I'm pretty sure we should support ICMP too, otherwise
568 * that's a regression from OF1.0. */
569 if (!(wc & OFPFW11_TP_SRC)) {
570 uint16_t icmp_type = ntohs(ofmatch->tp_src);
571 if (icmp_type < 0x100) {
572 match_set_icmp_type(match, icmp_type);
574 return OFPERR_OFPBMC_BAD_FIELD;
577 if (!(wc & OFPFW11_TP_DST)) {
578 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
579 if (icmp_code < 0x100) {
580 match_set_icmp_code(match, icmp_code);
582 return OFPERR_OFPBMC_BAD_FIELD;
590 if (!(wc & (OFPFW11_TP_SRC))) {
591 match_set_tp_src(match, ofmatch->tp_src);
593 if (!(wc & (OFPFW11_TP_DST))) {
594 match_set_tp_dst(match, ofmatch->tp_dst);
599 /* OF1.1 says explicitly to ignore this. */
604 if (eth_type_mpls(match->flow.dl_type)) {
605 if (!(wc & OFPFW11_MPLS_LABEL)) {
606 match_set_mpls_label(match, 0, ofmatch->mpls_label);
608 if (!(wc & OFPFW11_MPLS_TC)) {
609 match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
613 match_set_metadata_masked(match, ofmatch->metadata,
614 ~ofmatch->metadata_mask);
619 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
621 ofputil_match_to_ofp11_match(const struct match *match,
622 struct ofp11_match *ofmatch)
626 memset(ofmatch, 0, sizeof *ofmatch);
627 ofmatch->omh.type = htons(OFPMT_STANDARD);
628 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
630 if (!match->wc.masks.in_port.ofp_port) {
631 wc |= OFPFW11_IN_PORT;
633 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
636 ofmatch->dl_src = match->flow.dl_src;
637 ofmatch->dl_src_mask = eth_addr_invert(match->wc.masks.dl_src);
638 ofmatch->dl_dst = match->flow.dl_dst;
639 ofmatch->dl_dst_mask = eth_addr_invert(match->wc.masks.dl_dst);
641 if (match->wc.masks.vlan_tci == htons(0)) {
642 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
643 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
644 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
645 ofmatch->dl_vlan = htons(OFPVID11_NONE);
646 wc |= OFPFW11_DL_VLAN_PCP;
648 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
649 ofmatch->dl_vlan = htons(OFPVID11_ANY);
651 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
654 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
655 wc |= OFPFW11_DL_VLAN_PCP;
657 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
661 if (!match->wc.masks.dl_type) {
662 wc |= OFPFW11_DL_TYPE;
664 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
667 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
668 wc |= OFPFW11_NW_TOS;
670 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
673 if (!match->wc.masks.nw_proto) {
674 wc |= OFPFW11_NW_PROTO;
676 ofmatch->nw_proto = match->flow.nw_proto;
679 ofmatch->nw_src = match->flow.nw_src;
680 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
681 ofmatch->nw_dst = match->flow.nw_dst;
682 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
684 if (!match->wc.masks.tp_src) {
685 wc |= OFPFW11_TP_SRC;
687 ofmatch->tp_src = match->flow.tp_src;
690 if (!match->wc.masks.tp_dst) {
691 wc |= OFPFW11_TP_DST;
693 ofmatch->tp_dst = match->flow.tp_dst;
696 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
697 wc |= OFPFW11_MPLS_LABEL;
699 ofmatch->mpls_label = htonl(mpls_lse_to_label(
700 match->flow.mpls_lse[0]));
703 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
704 wc |= OFPFW11_MPLS_TC;
706 ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
709 ofmatch->metadata = match->flow.metadata;
710 ofmatch->metadata_mask = ~match->wc.masks.metadata;
712 ofmatch->wildcards = htonl(wc);
715 /* Returns the "typical" length of a match for 'protocol', for use in
716 * estimating space to preallocate. */
718 ofputil_match_typical_len(enum ofputil_protocol protocol)
721 case OFPUTIL_P_OF10_STD:
722 case OFPUTIL_P_OF10_STD_TID:
723 return sizeof(struct ofp10_match);
725 case OFPUTIL_P_OF10_NXM:
726 case OFPUTIL_P_OF10_NXM_TID:
727 return NXM_TYPICAL_LEN;
729 case OFPUTIL_P_OF11_STD:
730 return sizeof(struct ofp11_match);
732 case OFPUTIL_P_OF12_OXM:
733 case OFPUTIL_P_OF13_OXM:
734 case OFPUTIL_P_OF14_OXM:
735 case OFPUTIL_P_OF15_OXM:
736 return NXM_TYPICAL_LEN;
743 /* Appends to 'b' an struct ofp11_match_header followed by a match that
744 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
745 * data appended out to a multiple of 8. 'protocol' must be one that is usable
746 * in OpenFlow 1.1 or later.
748 * This function can cause 'b''s data to be reallocated.
750 * Returns the number of bytes appended to 'b', excluding the padding. Never
753 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
754 enum ofputil_protocol protocol)
757 case OFPUTIL_P_OF10_STD:
758 case OFPUTIL_P_OF10_STD_TID:
759 case OFPUTIL_P_OF10_NXM:
760 case OFPUTIL_P_OF10_NXM_TID:
763 case OFPUTIL_P_OF11_STD: {
764 struct ofp11_match *om;
766 /* Make sure that no padding is needed. */
767 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
769 om = ofpbuf_put_uninit(b, sizeof *om);
770 ofputil_match_to_ofp11_match(match, om);
774 case OFPUTIL_P_OF12_OXM:
775 case OFPUTIL_P_OF13_OXM:
776 case OFPUTIL_P_OF14_OXM:
777 case OFPUTIL_P_OF15_OXM:
778 return oxm_put_match(b, match,
779 ofputil_protocol_to_ofp_version(protocol));
785 /* Given a 'dl_type' value in the format used in struct flow, returns the
786 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
789 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
791 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
792 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
796 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
797 * structure, returns the corresponding 'dl_type' value for use in struct
800 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
802 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
803 ? htons(FLOW_DL_TYPE_NONE)
809 struct proto_abbrev {
810 enum ofputil_protocol protocol;
814 /* Most users really don't care about some of the differences between
815 * protocols. These abbreviations help with that. */
816 static const struct proto_abbrev proto_abbrevs[] = {
817 { OFPUTIL_P_ANY, "any" },
818 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
819 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
820 { OFPUTIL_P_ANY_OXM, "OXM" },
822 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
824 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
833 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
835 /* Returns the set of ofputil_protocols that are supported with the given
836 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
837 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
838 * if 'version' is not supported or outside the valid range. */
839 enum ofputil_protocol
840 ofputil_protocols_from_ofp_version(enum ofp_version version)
844 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
846 return OFPUTIL_P_OF11_STD;
848 return OFPUTIL_P_OF12_OXM;
850 return OFPUTIL_P_OF13_OXM;
852 return OFPUTIL_P_OF14_OXM;
854 return OFPUTIL_P_OF15_OXM;
860 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
861 * connection that has negotiated the given 'version'. 'version' should
862 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
863 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
864 * outside the valid range. */
865 enum ofputil_protocol
866 ofputil_protocol_from_ofp_version(enum ofp_version version)
868 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
871 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
872 * etc.) that corresponds to 'protocol'. */
874 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
877 case OFPUTIL_P_OF10_STD:
878 case OFPUTIL_P_OF10_STD_TID:
879 case OFPUTIL_P_OF10_NXM:
880 case OFPUTIL_P_OF10_NXM_TID:
881 return OFP10_VERSION;
882 case OFPUTIL_P_OF11_STD:
883 return OFP11_VERSION;
884 case OFPUTIL_P_OF12_OXM:
885 return OFP12_VERSION;
886 case OFPUTIL_P_OF13_OXM:
887 return OFP13_VERSION;
888 case OFPUTIL_P_OF14_OXM:
889 return OFP14_VERSION;
890 case OFPUTIL_P_OF15_OXM:
891 return OFP15_VERSION;
897 /* Returns a bitmap of OpenFlow versions that are supported by at
898 * least one of the 'protocols'. */
900 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
904 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
905 enum ofputil_protocol protocol = rightmost_1bit(protocols);
907 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
913 /* Returns the set of protocols that are supported on top of the
914 * OpenFlow versions included in 'bitmap'. */
915 enum ofputil_protocol
916 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
918 enum ofputil_protocol protocols = 0;
920 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
921 enum ofp_version version = rightmost_1bit_idx(bitmap);
923 protocols |= ofputil_protocols_from_ofp_version(version);
929 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
932 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
934 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
937 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
938 * extension turned on or off if 'enable' is true or false, respectively.
940 * This extension is only useful for protocols whose "standard" version does
941 * not allow specific tables to be modified. In particular, this is true of
942 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
943 * specifies a table ID and so there is no need for such an extension. When
944 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
945 * extension, this function just returns its 'protocol' argument unchanged
946 * regardless of the value of 'enable'. */
947 enum ofputil_protocol
948 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
951 case OFPUTIL_P_OF10_STD:
952 case OFPUTIL_P_OF10_STD_TID:
953 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
955 case OFPUTIL_P_OF10_NXM:
956 case OFPUTIL_P_OF10_NXM_TID:
957 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
959 case OFPUTIL_P_OF11_STD:
960 return OFPUTIL_P_OF11_STD;
962 case OFPUTIL_P_OF12_OXM:
963 return OFPUTIL_P_OF12_OXM;
965 case OFPUTIL_P_OF13_OXM:
966 return OFPUTIL_P_OF13_OXM;
968 case OFPUTIL_P_OF14_OXM:
969 return OFPUTIL_P_OF14_OXM;
971 case OFPUTIL_P_OF15_OXM:
972 return OFPUTIL_P_OF15_OXM;
979 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
980 * some extension to a standard protocol version, the return value is the
981 * standard version of that protocol without any extension. If 'protocol' is a
982 * standard protocol version, returns 'protocol' unchanged. */
983 enum ofputil_protocol
984 ofputil_protocol_to_base(enum ofputil_protocol protocol)
986 return ofputil_protocol_set_tid(protocol, false);
989 /* Returns 'new_base' with any extensions taken from 'cur'. */
990 enum ofputil_protocol
991 ofputil_protocol_set_base(enum ofputil_protocol cur,
992 enum ofputil_protocol new_base)
994 bool tid = (cur & OFPUTIL_P_TID) != 0;
997 case OFPUTIL_P_OF10_STD:
998 case OFPUTIL_P_OF10_STD_TID:
999 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
1001 case OFPUTIL_P_OF10_NXM:
1002 case OFPUTIL_P_OF10_NXM_TID:
1003 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
1005 case OFPUTIL_P_OF11_STD:
1006 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
1008 case OFPUTIL_P_OF12_OXM:
1009 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
1011 case OFPUTIL_P_OF13_OXM:
1012 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
1014 case OFPUTIL_P_OF14_OXM:
1015 return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
1017 case OFPUTIL_P_OF15_OXM:
1018 return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
1025 /* Returns a string form of 'protocol', if a simple form exists (that is, if
1026 * 'protocol' is either a single protocol or it is a combination of protocols
1027 * that have a single abbreviation). Otherwise, returns NULL. */
1029 ofputil_protocol_to_string(enum ofputil_protocol protocol)
1031 const struct proto_abbrev *p;
1033 /* Use a "switch" statement for single-bit names so that we get a compiler
1034 * warning if we forget any. */
1036 case OFPUTIL_P_OF10_NXM:
1037 return "NXM-table_id";
1039 case OFPUTIL_P_OF10_NXM_TID:
1040 return "NXM+table_id";
1042 case OFPUTIL_P_OF10_STD:
1043 return "OpenFlow10-table_id";
1045 case OFPUTIL_P_OF10_STD_TID:
1046 return "OpenFlow10+table_id";
1048 case OFPUTIL_P_OF11_STD:
1049 return "OpenFlow11";
1051 case OFPUTIL_P_OF12_OXM:
1052 return "OXM-OpenFlow12";
1054 case OFPUTIL_P_OF13_OXM:
1055 return "OXM-OpenFlow13";
1057 case OFPUTIL_P_OF14_OXM:
1058 return "OXM-OpenFlow14";
1060 case OFPUTIL_P_OF15_OXM:
1061 return "OXM-OpenFlow15";
1064 /* Check abbreviations. */
1065 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1066 if (protocol == p->protocol) {
1074 /* Returns a string that represents 'protocols'. The return value might be a
1075 * comma-separated list if 'protocols' doesn't have a simple name. The return
1076 * value is "none" if 'protocols' is 0.
1078 * The caller must free the returned string (with free()). */
1080 ofputil_protocols_to_string(enum ofputil_protocol protocols)
1084 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
1085 if (protocols == 0) {
1086 return xstrdup("none");
1091 const struct proto_abbrev *p;
1095 ds_put_char(&s, ',');
1098 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1099 if ((protocols & p->protocol) == p->protocol) {
1100 ds_put_cstr(&s, p->name);
1101 protocols &= ~p->protocol;
1106 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1107 enum ofputil_protocol bit = 1u << i;
1109 if (protocols & bit) {
1110 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
1119 return ds_steal_cstr(&s);
1122 static enum ofputil_protocol
1123 ofputil_protocol_from_string__(const char *s, size_t n)
1125 const struct proto_abbrev *p;
1128 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1129 enum ofputil_protocol bit = 1u << i;
1130 const char *name = ofputil_protocol_to_string(bit);
1132 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
1137 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1138 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
1146 /* Returns the nonempty set of protocols represented by 's', which can be a
1147 * single protocol name or abbreviation or a comma-separated list of them.
1149 * Aborts the program with an error message if 's' is invalid. */
1150 enum ofputil_protocol
1151 ofputil_protocols_from_string(const char *s)
1153 const char *orig_s = s;
1154 enum ofputil_protocol protocols;
1158 enum ofputil_protocol p;
1161 n = strcspn(s, ",");
1167 p = ofputil_protocol_from_string__(s, n);
1169 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
1177 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
1183 ofputil_version_from_string(const char *s)
1185 if (!strcasecmp(s, "OpenFlow10")) {
1186 return OFP10_VERSION;
1188 if (!strcasecmp(s, "OpenFlow11")) {
1189 return OFP11_VERSION;
1191 if (!strcasecmp(s, "OpenFlow12")) {
1192 return OFP12_VERSION;
1194 if (!strcasecmp(s, "OpenFlow13")) {
1195 return OFP13_VERSION;
1197 if (!strcasecmp(s, "OpenFlow14")) {
1198 return OFP14_VERSION;
1200 if (!strcasecmp(s, "OpenFlow15")) {
1201 return OFP15_VERSION;
1207 is_delimiter(unsigned char c)
1209 return isspace(c) || c == ',';
1213 ofputil_versions_from_string(const char *s)
1216 uint32_t bitmap = 0;
1223 if (is_delimiter(s[i])) {
1228 while (s[i + j] && !is_delimiter(s[i + j])) {
1231 key = xmemdup0(s + i, j);
1232 version = ofputil_version_from_string(key);
1234 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1237 bitmap |= 1u << version;
1245 ofputil_versions_from_strings(char ** const s, size_t count)
1247 uint32_t bitmap = 0;
1250 int version = ofputil_version_from_string(s[count]);
1252 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1254 bitmap |= 1u << version;
1262 ofputil_version_to_string(enum ofp_version ofp_version)
1264 switch (ofp_version) {
1266 return "OpenFlow10";
1268 return "OpenFlow11";
1270 return "OpenFlow12";
1272 return "OpenFlow13";
1274 return "OpenFlow14";
1276 return "OpenFlow15";
1283 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1285 switch (packet_in_format) {
1286 case NXPIF_OPENFLOW10:
1295 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1297 switch (packet_in_format) {
1298 case NXPIF_OPENFLOW10:
1299 return "openflow10";
1308 ofputil_packet_in_format_from_string(const char *s)
1310 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1311 : !strcmp(s, "nxm") ? NXPIF_NXM
1316 ofputil_format_version(struct ds *msg, enum ofp_version version)
1318 ds_put_format(msg, "0x%02x", version);
1322 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1324 ds_put_cstr(msg, ofputil_version_to_string(version));
1328 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1329 void (*format_version)(struct ds *msg,
1333 format_version(msg, raw_ctz(bitmap));
1334 bitmap = zero_rightmost_1bit(bitmap);
1336 ds_put_cstr(msg, ", ");
1342 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1344 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1348 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1350 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1354 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1355 uint32_t *allowed_versionsp)
1357 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1358 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1359 uint32_t allowed_versions;
1361 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1365 /* Only use the first 32-bit element of the bitmap as that is all the
1366 * current implementation supports. Subsequent elements are ignored which
1367 * should have no effect on session negotiation until Open vSwitch supports
1368 * wire-protocol versions greater than 31.
1370 allowed_versions = ntohl(bitmap[0]);
1372 if (allowed_versions & 1) {
1373 /* There's no OpenFlow version 0. */
1374 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1376 allowed_versions &= ~1u;
1379 if (!allowed_versions) {
1380 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1381 "version (between 0x01 and 0x1f)");
1385 *allowed_versionsp = allowed_versions;
1390 version_bitmap_from_version(uint8_t ofp_version)
1392 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1395 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1396 * the set of OpenFlow versions for which 'oh' announces support.
1398 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1399 * successful, and thus '*allowed_versions' is always initialized. However, it
1400 * returns false if 'oh' contains some data that could not be fully understood,
1401 * true if 'oh' was completely parsed. */
1403 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1408 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1409 ofpbuf_pull(&msg, sizeof *oh);
1411 *allowed_versions = version_bitmap_from_version(oh->version);
1413 const struct ofp_hello_elem_header *oheh;
1416 if (msg.size < sizeof *oheh) {
1421 len = ntohs(oheh->length);
1422 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1426 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1427 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1435 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1436 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1438 should_send_version_bitmap(uint32_t allowed_versions)
1440 return !is_pow2((allowed_versions >> 1) + 1);
1443 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1444 * versions in the 'allowed_versions' bitmaps and returns the message. */
1446 ofputil_encode_hello(uint32_t allowed_versions)
1448 enum ofp_version ofp_version;
1451 ofp_version = leftmost_1bit_idx(allowed_versions);
1452 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1454 if (should_send_version_bitmap(allowed_versions)) {
1455 struct ofp_hello_elem_header *oheh;
1458 map_len = sizeof allowed_versions;
1459 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1460 oheh->type = htons(OFPHET_VERSIONBITMAP);
1461 oheh->length = htons(map_len + sizeof *oheh);
1462 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1464 ofpmsg_update_length(msg);
1470 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1471 * protocol is 'current', at least partly transitions the protocol to 'want'.
1472 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1473 * connection if the switch processes the returned message correctly. (If
1474 * '*next != want' then the caller will have to iterate.)
1476 * If 'current == want', or if it is not possible to transition from 'current'
1477 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1478 * protocol versions), returns NULL and stores 'current' in '*next'. */
1480 ofputil_encode_set_protocol(enum ofputil_protocol current,
1481 enum ofputil_protocol want,
1482 enum ofputil_protocol *next)
1484 enum ofp_version cur_version, want_version;
1485 enum ofputil_protocol cur_base, want_base;
1486 bool cur_tid, want_tid;
1488 cur_version = ofputil_protocol_to_ofp_version(current);
1489 want_version = ofputil_protocol_to_ofp_version(want);
1490 if (cur_version != want_version) {
1495 cur_base = ofputil_protocol_to_base(current);
1496 want_base = ofputil_protocol_to_base(want);
1497 if (cur_base != want_base) {
1498 *next = ofputil_protocol_set_base(current, want_base);
1500 switch (want_base) {
1501 case OFPUTIL_P_OF10_NXM:
1502 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1504 case OFPUTIL_P_OF10_STD:
1505 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1507 case OFPUTIL_P_OF11_STD:
1508 case OFPUTIL_P_OF12_OXM:
1509 case OFPUTIL_P_OF13_OXM:
1510 case OFPUTIL_P_OF14_OXM:
1511 case OFPUTIL_P_OF15_OXM:
1512 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1513 * verified above that we're not trying to change versions. */
1516 case OFPUTIL_P_OF10_STD_TID:
1517 case OFPUTIL_P_OF10_NXM_TID:
1522 cur_tid = (current & OFPUTIL_P_TID) != 0;
1523 want_tid = (want & OFPUTIL_P_TID) != 0;
1524 if (cur_tid != want_tid) {
1525 *next = ofputil_protocol_set_tid(current, want_tid);
1526 return ofputil_make_flow_mod_table_id(want_tid);
1529 ovs_assert(current == want);
1535 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1536 * format to 'nxff'. */
1538 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1540 struct nx_set_flow_format *sff;
1543 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1545 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1546 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1547 sff->format = htonl(nxff);
1552 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1554 enum ofputil_protocol
1555 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1557 switch (flow_format) {
1558 case NXFF_OPENFLOW10:
1559 return OFPUTIL_P_OF10_STD;
1562 return OFPUTIL_P_OF10_NXM;
1569 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1571 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1573 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1576 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1579 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1581 switch (flow_format) {
1582 case NXFF_OPENFLOW10:
1583 return "openflow10";
1592 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1593 enum nx_packet_in_format packet_in_format)
1595 struct nx_set_packet_in_format *spif;
1598 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1599 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1600 spif->format = htonl(packet_in_format);
1605 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1606 * extension on or off (according to 'flow_mod_table_id'). */
1608 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1610 struct nx_flow_mod_table_id *nfmti;
1613 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1614 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1615 nfmti->set = flow_mod_table_id;
1619 struct ofputil_flow_mod_flag {
1621 enum ofp_version min_version, max_version;
1622 enum ofputil_flow_mod_flags flag;
1625 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1626 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1627 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1628 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1630 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1631 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1632 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1637 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1638 enum ofp_flow_mod_command command,
1639 enum ofp_version version,
1640 enum ofputil_flow_mod_flags *flagsp)
1642 uint16_t raw_flags = ntohs(raw_flags_);
1643 const struct ofputil_flow_mod_flag *f;
1646 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1647 if (raw_flags & f->raw_flag
1648 && version >= f->min_version
1649 && (!f->max_version || version <= f->max_version)) {
1650 raw_flags &= ~f->raw_flag;
1655 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1658 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1659 * resets counters. */
1660 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1661 && command == OFPFC_ADD) {
1662 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1665 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1669 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1670 enum ofp_version version)
1672 const struct ofputil_flow_mod_flag *f;
1676 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1678 && version >= f->min_version
1679 && (!f->max_version || version <= f->max_version)) {
1680 raw_flags |= f->raw_flag;
1684 return htons(raw_flags);
1687 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1688 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1691 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1692 * The caller must initialize 'ofpacts' and retains ownership of it.
1693 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1695 * Does not validate the flow_mod actions. The caller should do that, with
1696 * ofpacts_check(). */
1698 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1699 const struct ofp_header *oh,
1700 enum ofputil_protocol protocol,
1701 struct ofpbuf *ofpacts,
1702 ofp_port_t max_port, uint8_t max_table)
1709 /* Ignored for non-delete actions */
1710 fm->delete_reason = OFPRR_DELETE;
1712 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1713 raw = ofpraw_pull_assert(&b);
1714 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1715 /* Standard OpenFlow 1.1+ flow_mod. */
1716 const struct ofp11_flow_mod *ofm;
1718 ofm = ofpbuf_pull(&b, sizeof *ofm);
1720 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1725 /* Translate the message. */
1726 fm->priority = ntohs(ofm->priority);
1727 if (ofm->command == OFPFC_ADD
1728 || (oh->version == OFP11_VERSION
1729 && (ofm->command == OFPFC_MODIFY ||
1730 ofm->command == OFPFC_MODIFY_STRICT)
1731 && ofm->cookie_mask == htonll(0))) {
1732 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1733 * not match on the cookie is treated as an "add" if there is no
1735 fm->cookie = htonll(0);
1736 fm->cookie_mask = htonll(0);
1737 fm->new_cookie = ofm->cookie;
1739 fm->cookie = ofm->cookie;
1740 fm->cookie_mask = ofm->cookie_mask;
1741 fm->new_cookie = OVS_BE64_MAX;
1743 fm->modify_cookie = false;
1744 fm->command = ofm->command;
1748 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1749 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1750 fm->table_id = ofm->table_id;
1751 if (fm->table_id == OFPTT_ALL
1752 && (oh->version == OFP11_VERSION
1753 || (ofm->command != OFPFC_DELETE &&
1754 ofm->command != OFPFC_DELETE_STRICT))) {
1755 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1758 fm->idle_timeout = ntohs(ofm->idle_timeout);
1759 fm->hard_timeout = ntohs(ofm->hard_timeout);
1760 if (oh->version >= OFP14_VERSION && ofm->command == OFPFC_ADD) {
1761 fm->importance = ntohs(ofm->importance);
1765 fm->buffer_id = ntohl(ofm->buffer_id);
1766 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1771 fm->out_group = (ofm->command == OFPFC_DELETE ||
1772 ofm->command == OFPFC_DELETE_STRICT
1773 ? ntohl(ofm->out_group)
1775 raw_flags = ofm->flags;
1779 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1780 /* Standard OpenFlow 1.0 flow_mod. */
1781 const struct ofp10_flow_mod *ofm;
1783 /* Get the ofp10_flow_mod. */
1784 ofm = ofpbuf_pull(&b, sizeof *ofm);
1786 /* Translate the rule. */
1787 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1788 ofputil_normalize_match(&fm->match);
1790 /* OpenFlow 1.0 says that exact-match rules have to have the
1791 * highest possible priority. */
1792 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1793 ? ntohs(ofm->priority)
1796 /* Translate the message. */
1797 command = ntohs(ofm->command);
1798 fm->cookie = htonll(0);
1799 fm->cookie_mask = htonll(0);
1800 fm->new_cookie = ofm->cookie;
1801 fm->idle_timeout = ntohs(ofm->idle_timeout);
1802 fm->hard_timeout = ntohs(ofm->hard_timeout);
1804 fm->buffer_id = ntohl(ofm->buffer_id);
1805 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1806 fm->out_group = OFPG_ANY;
1807 raw_flags = ofm->flags;
1808 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1809 /* Nicira extended flow_mod. */
1810 const struct nx_flow_mod *nfm;
1812 /* Dissect the message. */
1813 nfm = ofpbuf_pull(&b, sizeof *nfm);
1814 error = nx_pull_match(&b, ntohs(nfm->match_len),
1815 &fm->match, &fm->cookie, &fm->cookie_mask);
1820 /* Translate the message. */
1821 command = ntohs(nfm->command);
1822 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1823 /* Flow additions may only set a new cookie, not match an
1824 * existing cookie. */
1825 return OFPERR_NXBRC_NXM_INVALID;
1827 fm->priority = ntohs(nfm->priority);
1828 fm->new_cookie = nfm->cookie;
1829 fm->idle_timeout = ntohs(nfm->idle_timeout);
1830 fm->hard_timeout = ntohs(nfm->hard_timeout);
1832 fm->buffer_id = ntohl(nfm->buffer_id);
1833 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1834 fm->out_group = OFPG_ANY;
1835 raw_flags = nfm->flags;
1840 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1841 if (protocol & OFPUTIL_P_TID) {
1842 fm->command = command & 0xff;
1843 fm->table_id = command >> 8;
1845 if (command > 0xff) {
1846 VLOG_WARN_RL(&bad_ofmsg_rl, "flow_mod has explicit table_id "
1847 "but flow_mod_table_id extension is not enabled");
1849 fm->command = command;
1850 fm->table_id = 0xff;
1854 if (fm->command > OFPFC_DELETE_STRICT) {
1855 return OFPERR_OFPFMFC_BAD_COMMAND;
1858 error = ofpacts_pull_openflow_instructions(&b, b.size,
1859 oh->version, ofpacts);
1863 fm->ofpacts = ofpacts->data;
1864 fm->ofpacts_len = ofpacts->size;
1866 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1867 oh->version, &fm->flags);
1872 if (fm->flags & OFPUTIL_FF_EMERG) {
1873 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1874 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1876 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1877 * or hard_timeout is nonzero. Otherwise, there is no good error
1878 * code, so just state that the flow table is full. */
1879 return (fm->hard_timeout || fm->idle_timeout
1880 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1881 : OFPERR_OFPFMFC_TABLE_FULL);
1884 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1885 &fm->match.flow, max_port,
1886 fm->table_id, max_table, protocol);
1890 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1891 struct ofpbuf *bands)
1893 const struct ofp13_meter_band_header *ombh;
1894 struct ofputil_meter_band *mb;
1897 ombh = ofpbuf_try_pull(msg, len);
1899 return OFPERR_OFPBRC_BAD_LEN;
1902 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1903 size_t ombh_len = ntohs(ombh->len);
1904 /* All supported band types have the same length. */
1905 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1906 return OFPERR_OFPBRC_BAD_LEN;
1908 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1909 mb->type = ntohs(ombh->type);
1910 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1911 return OFPERR_OFPMMFC_BAD_BAND;
1913 mb->rate = ntohl(ombh->rate);
1914 mb->burst_size = ntohl(ombh->burst_size);
1915 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1916 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1919 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1920 (char *) ombh + ombh_len);
1923 return OFPERR_OFPBRC_BAD_LEN;
1930 ofputil_decode_meter_mod(const struct ofp_header *oh,
1931 struct ofputil_meter_mod *mm,
1932 struct ofpbuf *bands)
1934 const struct ofp13_meter_mod *omm;
1937 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1938 ofpraw_pull_assert(&b);
1939 omm = ofpbuf_pull(&b, sizeof *omm);
1941 /* Translate the message. */
1942 mm->command = ntohs(omm->command);
1943 if (mm->command != OFPMC13_ADD &&
1944 mm->command != OFPMC13_MODIFY &&
1945 mm->command != OFPMC13_DELETE) {
1946 return OFPERR_OFPMMFC_BAD_COMMAND;
1948 mm->meter.meter_id = ntohl(omm->meter_id);
1950 if (mm->command == OFPMC13_DELETE) {
1951 mm->meter.flags = 0;
1952 mm->meter.n_bands = 0;
1953 mm->meter.bands = NULL;
1957 mm->meter.flags = ntohs(omm->flags);
1958 if (mm->meter.flags & OFPMF13_KBPS &&
1959 mm->meter.flags & OFPMF13_PKTPS) {
1960 return OFPERR_OFPMMFC_BAD_FLAGS;
1962 mm->meter.bands = bands->data;
1964 error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
1973 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1975 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1976 *meter_id = ntohl(omr->meter_id);
1980 ofputil_encode_meter_request(enum ofp_version ofp_version,
1981 enum ofputil_meter_request_type type,
1989 case OFPUTIL_METER_CONFIG:
1990 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1992 case OFPUTIL_METER_STATS:
1993 raw = OFPRAW_OFPST13_METER_REQUEST;
1996 case OFPUTIL_METER_FEATURES:
1997 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
2001 msg = ofpraw_alloc(raw, ofp_version, 0);
2003 if (type != OFPUTIL_METER_FEATURES) {
2004 struct ofp13_meter_multipart_request *omr;
2005 omr = ofpbuf_put_zeros(msg, sizeof *omr);
2006 omr->meter_id = htonl(meter_id);
2012 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
2017 for (n = 0; n < n_bands; ++n) {
2018 /* Currently all band types have same size. */
2019 struct ofp13_meter_band_dscp_remark *ombh;
2020 size_t ombh_len = sizeof *ombh;
2022 ombh = ofpbuf_put_zeros(msg, ombh_len);
2024 ombh->type = htons(mb->type);
2025 ombh->len = htons(ombh_len);
2026 ombh->rate = htonl(mb->rate);
2027 ombh->burst_size = htonl(mb->burst_size);
2028 ombh->prec_level = mb->prec_level;
2034 /* Encode a meter stat for 'mc' and append it to 'replies'. */
2036 ofputil_append_meter_config(struct ovs_list *replies,
2037 const struct ofputil_meter_config *mc)
2039 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
2040 size_t start_ofs = msg->size;
2041 struct ofp13_meter_config *reply;
2043 ofpbuf_put_uninit(msg, sizeof *reply);
2044 ofputil_put_bands(mc->n_bands, mc->bands, msg);
2046 reply = ofpbuf_at_assert(msg, start_ofs, sizeof *reply);
2047 reply->flags = htons(mc->flags);
2048 reply->meter_id = htonl(mc->meter_id);
2049 reply->length = htons(msg->size - start_ofs);
2051 ofpmp_postappend(replies, start_ofs);
2054 /* Encode a meter stat for 'ms' and append it to 'replies'. */
2056 ofputil_append_meter_stats(struct ovs_list *replies,
2057 const struct ofputil_meter_stats *ms)
2059 struct ofp13_meter_stats *reply;
2063 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
2064 reply = ofpmp_append(replies, len);
2066 reply->meter_id = htonl(ms->meter_id);
2067 reply->len = htons(len);
2068 memset(reply->pad, 0, sizeof reply->pad);
2069 reply->flow_count = htonl(ms->flow_count);
2070 reply->packet_in_count = htonll(ms->packet_in_count);
2071 reply->byte_in_count = htonll(ms->byte_in_count);
2072 reply->duration_sec = htonl(ms->duration_sec);
2073 reply->duration_nsec = htonl(ms->duration_nsec);
2075 for (n = 0; n < ms->n_bands; ++n) {
2076 const struct ofputil_meter_band_stats *src = &ms->bands[n];
2077 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
2079 dst->packet_band_count = htonll(src->packet_count);
2080 dst->byte_band_count = htonll(src->byte_count);
2084 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
2085 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
2086 * 'bands'. The caller must have initialized 'bands' and retains ownership of
2087 * it across the call.
2089 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
2090 * message. Calling this function multiple times for a single 'msg' iterates
2091 * through the replies. 'bands' is cleared for each reply.
2093 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2094 * otherwise a positive errno value. */
2096 ofputil_decode_meter_config(struct ofpbuf *msg,
2097 struct ofputil_meter_config *mc,
2098 struct ofpbuf *bands)
2100 const struct ofp13_meter_config *omc;
2103 /* Pull OpenFlow headers for the first call. */
2105 ofpraw_pull_assert(msg);
2112 omc = ofpbuf_try_pull(msg, sizeof *omc);
2114 VLOG_WARN_RL(&bad_ofmsg_rl,
2115 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2117 return OFPERR_OFPBRC_BAD_LEN;
2120 ofpbuf_clear(bands);
2121 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2122 &mc->n_bands, bands);
2126 mc->meter_id = ntohl(omc->meter_id);
2127 mc->flags = ntohs(omc->flags);
2128 mc->bands = bands->data;
2134 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2135 struct ofpbuf *bands)
2137 const struct ofp13_meter_band_stats *ombs;
2138 struct ofputil_meter_band_stats *mbs;
2141 ombs = ofpbuf_try_pull(msg, len);
2143 return OFPERR_OFPBRC_BAD_LEN;
2146 n = len / sizeof *ombs;
2147 if (len != n * sizeof *ombs) {
2148 return OFPERR_OFPBRC_BAD_LEN;
2151 mbs = ofpbuf_put_uninit(bands, len);
2153 for (i = 0; i < n; ++i) {
2154 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2155 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2161 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2162 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2163 * decoded into 'bands'.
2165 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2166 * message. Calling this function multiple times for a single 'msg' iterates
2167 * through the replies. 'bands' is cleared for each reply.
2169 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2170 * otherwise a positive errno value. */
2172 ofputil_decode_meter_stats(struct ofpbuf *msg,
2173 struct ofputil_meter_stats *ms,
2174 struct ofpbuf *bands)
2176 const struct ofp13_meter_stats *oms;
2179 /* Pull OpenFlow headers for the first call. */
2181 ofpraw_pull_assert(msg);
2188 oms = ofpbuf_try_pull(msg, sizeof *oms);
2190 VLOG_WARN_RL(&bad_ofmsg_rl,
2191 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2193 return OFPERR_OFPBRC_BAD_LEN;
2196 ofpbuf_clear(bands);
2197 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2198 &ms->n_bands, bands);
2202 ms->meter_id = ntohl(oms->meter_id);
2203 ms->flow_count = ntohl(oms->flow_count);
2204 ms->packet_in_count = ntohll(oms->packet_in_count);
2205 ms->byte_in_count = ntohll(oms->byte_in_count);
2206 ms->duration_sec = ntohl(oms->duration_sec);
2207 ms->duration_nsec = ntohl(oms->duration_nsec);
2208 ms->bands = bands->data;
2214 ofputil_decode_meter_features(const struct ofp_header *oh,
2215 struct ofputil_meter_features *mf)
2217 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2219 mf->max_meters = ntohl(omf->max_meter);
2220 mf->band_types = ntohl(omf->band_types);
2221 mf->capabilities = ntohl(omf->capabilities);
2222 mf->max_bands = omf->max_bands;
2223 mf->max_color = omf->max_color;
2227 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2228 const struct ofp_header *request)
2230 struct ofpbuf *reply;
2231 struct ofp13_meter_features *omf;
2233 reply = ofpraw_alloc_stats_reply(request, 0);
2234 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2236 omf->max_meter = htonl(mf->max_meters);
2237 omf->band_types = htonl(mf->band_types);
2238 omf->capabilities = htonl(mf->capabilities);
2239 omf->max_bands = mf->max_bands;
2240 omf->max_color = mf->max_color;
2246 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2247 const struct ofputil_meter_mod *mm)
2251 struct ofp13_meter_mod *omm;
2253 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2254 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2255 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2256 omm->command = htons(mm->command);
2257 if (mm->command != OFPMC13_DELETE) {
2258 omm->flags = htons(mm->meter.flags);
2260 omm->meter_id = htonl(mm->meter.meter_id);
2262 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2264 ofpmsg_update_length(msg);
2269 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2270 enum ofputil_protocol protocol)
2272 return htons(protocol & OFPUTIL_P_TID
2273 ? (fm->command & 0xff) | (fm->table_id << 8)
2277 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2278 * 'protocol' and returns the message. */
2280 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2281 enum ofputil_protocol protocol)
2283 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2284 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2288 case OFPUTIL_P_OF11_STD:
2289 case OFPUTIL_P_OF12_OXM:
2290 case OFPUTIL_P_OF13_OXM:
2291 case OFPUTIL_P_OF14_OXM:
2292 case OFPUTIL_P_OF15_OXM: {
2293 struct ofp11_flow_mod *ofm;
2296 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2297 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2298 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2299 if ((protocol == OFPUTIL_P_OF11_STD
2300 && (fm->command == OFPFC_MODIFY ||
2301 fm->command == OFPFC_MODIFY_STRICT)
2302 && fm->cookie_mask == htonll(0))
2303 || fm->command == OFPFC_ADD) {
2304 ofm->cookie = fm->new_cookie;
2306 ofm->cookie = fm->cookie & fm->cookie_mask;
2308 ofm->cookie_mask = fm->cookie_mask;
2309 if (fm->table_id != OFPTT_ALL
2310 || (protocol != OFPUTIL_P_OF11_STD
2311 && (fm->command == OFPFC_DELETE ||
2312 fm->command == OFPFC_DELETE_STRICT))) {
2313 ofm->table_id = fm->table_id;
2317 ofm->command = fm->command;
2318 ofm->idle_timeout = htons(fm->idle_timeout);
2319 ofm->hard_timeout = htons(fm->hard_timeout);
2320 ofm->priority = htons(fm->priority);
2321 ofm->buffer_id = htonl(fm->buffer_id);
2322 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2323 ofm->out_group = htonl(fm->out_group);
2324 ofm->flags = raw_flags;
2325 if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
2326 ofm->importance = htons(fm->importance);
2328 ofm->importance = 0;
2330 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2331 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2336 case OFPUTIL_P_OF10_STD:
2337 case OFPUTIL_P_OF10_STD_TID: {
2338 struct ofp10_flow_mod *ofm;
2340 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2342 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2343 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2344 ofm->cookie = fm->new_cookie;
2345 ofm->command = ofputil_tid_command(fm, protocol);
2346 ofm->idle_timeout = htons(fm->idle_timeout);
2347 ofm->hard_timeout = htons(fm->hard_timeout);
2348 ofm->priority = htons(fm->priority);
2349 ofm->buffer_id = htonl(fm->buffer_id);
2350 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2351 ofm->flags = raw_flags;
2352 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2357 case OFPUTIL_P_OF10_NXM:
2358 case OFPUTIL_P_OF10_NXM_TID: {
2359 struct nx_flow_mod *nfm;
2362 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2363 NXM_TYPICAL_LEN + fm->ofpacts_len);
2364 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2365 nfm->command = ofputil_tid_command(fm, protocol);
2366 nfm->cookie = fm->new_cookie;
2367 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2369 nfm->idle_timeout = htons(fm->idle_timeout);
2370 nfm->hard_timeout = htons(fm->hard_timeout);
2371 nfm->priority = htons(fm->priority);
2372 nfm->buffer_id = htonl(fm->buffer_id);
2373 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2374 nfm->flags = raw_flags;
2375 nfm->match_len = htons(match_len);
2376 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2385 ofpmsg_update_length(msg);
2390 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2391 const struct ofp10_flow_stats_request *ofsr,
2394 fsr->aggregate = aggregate;
2395 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2396 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2397 fsr->out_group = OFPG_ANY;
2398 fsr->table_id = ofsr->table_id;
2399 fsr->cookie = fsr->cookie_mask = htonll(0);
2405 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2406 struct ofpbuf *b, bool aggregate)
2408 const struct ofp11_flow_stats_request *ofsr;
2411 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2412 fsr->aggregate = aggregate;
2413 fsr->table_id = ofsr->table_id;
2414 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2418 fsr->out_group = ntohl(ofsr->out_group);
2419 fsr->cookie = ofsr->cookie;
2420 fsr->cookie_mask = ofsr->cookie_mask;
2421 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2430 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2431 struct ofpbuf *b, bool aggregate)
2433 const struct nx_flow_stats_request *nfsr;
2436 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2437 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2438 &fsr->cookie, &fsr->cookie_mask);
2443 return OFPERR_OFPBRC_BAD_LEN;
2446 fsr->aggregate = aggregate;
2447 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2448 fsr->out_group = OFPG_ANY;
2449 fsr->table_id = nfsr->table_id;
2454 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2455 * 'port', suitable for OpenFlow version 'version'. */
2457 ofputil_encode_queue_get_config_request(enum ofp_version version,
2460 struct ofpbuf *request;
2462 if (version == OFP10_VERSION) {
2463 struct ofp10_queue_get_config_request *qgcr10;
2465 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2467 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2468 qgcr10->port = htons(ofp_to_u16(port));
2470 struct ofp11_queue_get_config_request *qgcr11;
2472 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2474 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2475 qgcr11->port = ofputil_port_to_ofp11(port);
2481 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2482 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2485 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2488 const struct ofp10_queue_get_config_request *qgcr10;
2489 const struct ofp11_queue_get_config_request *qgcr11;
2493 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2494 raw = ofpraw_pull_assert(&b);
2496 switch ((int) raw) {
2497 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2499 *port = u16_to_ofp(ntohs(qgcr10->port));
2502 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2504 enum ofperr error = ofputil_port_from_ofp11(qgcr11->port, port);
2505 if (error || *port == OFPP_ANY) {
2514 return (ofp_to_u16(*port) < ofp_to_u16(OFPP_MAX)
2516 : OFPERR_OFPQOFC_BAD_PORT);
2519 /* Constructs and returns the beginning of a reply to
2520 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2521 * individual queues with ofputil_append_queue_get_config_reply(). */
2523 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2525 struct ofp10_queue_get_config_reply *qgcr10;
2526 struct ofp11_queue_get_config_reply *qgcr11;
2527 struct ofpbuf *reply;
2533 error = ofputil_decode_queue_get_config_request(oh, &port);
2536 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2537 raw = ofpraw_pull_assert(&b);
2539 switch ((int) raw) {
2540 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2541 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2543 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2544 qgcr10->port = htons(ofp_to_u16(port));
2547 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2548 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2550 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2551 qgcr11->port = ofputil_port_to_ofp11(port);
2562 put_ofp10_queue_rate(struct ofpbuf *reply,
2563 enum ofp10_queue_properties property, uint16_t rate)
2565 if (rate != UINT16_MAX) {
2566 struct ofp10_queue_prop_rate *oqpr;
2568 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2569 oqpr->prop_header.property = htons(property);
2570 oqpr->prop_header.len = htons(sizeof *oqpr);
2571 oqpr->rate = htons(rate);
2575 /* Appends a queue description for 'queue_id' to the
2576 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2578 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2579 const struct ofputil_queue_config *oqc)
2581 const struct ofp_header *oh = reply->data;
2582 size_t start_ofs, len_ofs;
2585 start_ofs = reply->size;
2586 if (oh->version < OFP12_VERSION) {
2587 struct ofp10_packet_queue *opq10;
2589 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2590 opq10->queue_id = htonl(oqc->queue_id);
2591 len_ofs = (char *) &opq10->len - (char *) reply->data;
2593 struct ofp12_packet_queue *opq12;
2595 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2596 opq12->port = ofputil_port_to_ofp11(oqc->port);
2597 opq12->queue_id = htonl(oqc->queue_id);
2598 len_ofs = (char *) &opq12->len - (char *) reply->data;
2601 put_ofp10_queue_rate(reply, OFPQT10_MIN_RATE, oqc->min_rate);
2602 put_ofp10_queue_rate(reply, OFPQT11_MAX_RATE, oqc->max_rate);
2604 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2605 *len = htons(reply->size - start_ofs);
2608 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2609 * stores in '*port' the port that the reply is about. The caller may call
2610 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2611 * queues included in the reply. Returns 0 if successful, otherwise an
2614 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2616 const struct ofp10_queue_get_config_reply *qgcr10;
2617 const struct ofp11_queue_get_config_reply *qgcr11;
2620 raw = ofpraw_pull_assert(reply);
2621 switch ((int) raw) {
2622 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2623 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2624 *port = u16_to_ofp(ntohs(qgcr10->port));
2627 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2628 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2629 return ofputil_port_from_ofp11(qgcr11->port, port);
2636 parse_ofp10_queue_rate(const struct ofp10_queue_prop_header *hdr,
2639 const struct ofp10_queue_prop_rate *oqpr;
2641 if (hdr->len == htons(sizeof *oqpr)) {
2642 oqpr = (const struct ofp10_queue_prop_rate *) hdr;
2643 *rate = ntohs(oqpr->rate);
2646 return OFPERR_OFPBRC_BAD_LEN;
2650 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2651 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2652 * must already have pulled off the main header.
2654 * This function returns EOF if the last queue has already been decoded, 0 if a
2655 * queue was successfully decoded into '*queue', or an ofperr if there was a
2656 * problem decoding 'reply'. */
2658 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2659 struct ofputil_queue_config *queue)
2661 const struct ofp_header *oh;
2662 unsigned int opq_len;
2669 queue->min_rate = UINT16_MAX;
2670 queue->max_rate = UINT16_MAX;
2673 if (oh->version < OFP12_VERSION) {
2674 const struct ofp10_packet_queue *opq10;
2676 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2678 return OFPERR_OFPBRC_BAD_LEN;
2680 queue->queue_id = ntohl(opq10->queue_id);
2681 len = ntohs(opq10->len);
2682 opq_len = sizeof *opq10;
2684 const struct ofp12_packet_queue *opq12;
2686 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2688 return OFPERR_OFPBRC_BAD_LEN;
2690 queue->queue_id = ntohl(opq12->queue_id);
2691 len = ntohs(opq12->len);
2692 opq_len = sizeof *opq12;
2695 if (len < opq_len || len > reply->size + opq_len || len % 8) {
2696 return OFPERR_OFPBRC_BAD_LEN;
2701 const struct ofp10_queue_prop_header *hdr;
2702 unsigned int property;
2703 unsigned int prop_len;
2704 enum ofperr error = 0;
2706 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2707 prop_len = ntohs(hdr->len);
2708 if (prop_len < sizeof *hdr || prop_len > reply->size || prop_len % 8) {
2709 return OFPERR_OFPBRC_BAD_LEN;
2712 property = ntohs(hdr->property);
2714 case OFPQT10_MIN_RATE:
2715 error = parse_ofp10_queue_rate(hdr, &queue->min_rate);
2718 case OFPQT11_MAX_RATE:
2719 error = parse_ofp10_queue_rate(hdr, &queue->max_rate);
2723 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2730 ofpbuf_pull(reply, prop_len);
2736 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2737 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2738 * successful, otherwise an OpenFlow error code. */
2740 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2741 const struct ofp_header *oh)
2746 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2747 raw = ofpraw_pull_assert(&b);
2748 switch ((int) raw) {
2749 case OFPRAW_OFPST10_FLOW_REQUEST:
2750 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2752 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2753 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2755 case OFPRAW_OFPST11_FLOW_REQUEST:
2756 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2758 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2759 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2761 case OFPRAW_NXST_FLOW_REQUEST:
2762 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2764 case OFPRAW_NXST_AGGREGATE_REQUEST:
2765 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2768 /* Hey, the caller lied. */
2773 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2774 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2775 * 'protocol', and returns the message. */
2777 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2778 enum ofputil_protocol protocol)
2784 case OFPUTIL_P_OF11_STD:
2785 case OFPUTIL_P_OF12_OXM:
2786 case OFPUTIL_P_OF13_OXM:
2787 case OFPUTIL_P_OF14_OXM:
2788 case OFPUTIL_P_OF15_OXM: {
2789 struct ofp11_flow_stats_request *ofsr;
2791 raw = (fsr->aggregate
2792 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2793 : OFPRAW_OFPST11_FLOW_REQUEST);
2794 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2795 ofputil_match_typical_len(protocol));
2796 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2797 ofsr->table_id = fsr->table_id;
2798 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2799 ofsr->out_group = htonl(fsr->out_group);
2800 ofsr->cookie = fsr->cookie;
2801 ofsr->cookie_mask = fsr->cookie_mask;
2802 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2806 case OFPUTIL_P_OF10_STD:
2807 case OFPUTIL_P_OF10_STD_TID: {
2808 struct ofp10_flow_stats_request *ofsr;
2810 raw = (fsr->aggregate
2811 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2812 : OFPRAW_OFPST10_FLOW_REQUEST);
2813 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2814 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2815 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2816 ofsr->table_id = fsr->table_id;
2817 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2821 case OFPUTIL_P_OF10_NXM:
2822 case OFPUTIL_P_OF10_NXM_TID: {
2823 struct nx_flow_stats_request *nfsr;
2826 raw = (fsr->aggregate
2827 ? OFPRAW_NXST_AGGREGATE_REQUEST
2828 : OFPRAW_NXST_FLOW_REQUEST);
2829 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2830 ofpbuf_put_zeros(msg, sizeof *nfsr);
2831 match_len = nx_put_match(msg, &fsr->match,
2832 fsr->cookie, fsr->cookie_mask);
2835 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2836 nfsr->match_len = htons(match_len);
2837 nfsr->table_id = fsr->table_id;
2848 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2849 * ofputil_flow_stats in 'fs'.
2851 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2852 * OpenFlow message. Calling this function multiple times for a single 'msg'
2853 * iterates through the replies. The caller must initially leave 'msg''s layer
2854 * pointers null and not modify them between calls.
2856 * Most switches don't send the values needed to populate fs->idle_age and
2857 * fs->hard_age, so those members will usually be set to 0. If the switch from
2858 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2859 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2860 * 'idle_age' and 'hard_age' members in 'fs'.
2862 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2863 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2864 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2866 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2867 * otherwise a positive errno value. */
2869 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2871 bool flow_age_extension,
2872 struct ofpbuf *ofpacts)
2874 const struct ofp_header *oh;
2875 size_t instructions_len;
2879 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2880 : ofpraw_pull(&raw, msg));
2888 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2889 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2890 const struct ofp11_flow_stats *ofs;
2892 uint16_t padded_match_len;
2894 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2896 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2897 "bytes at end", msg->size);
2901 length = ntohs(ofs->length);
2902 if (length < sizeof *ofs) {
2903 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2904 "length %"PRIuSIZE, length);
2908 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2909 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2912 instructions_len = length - sizeof *ofs - padded_match_len;
2914 fs->priority = ntohs(ofs->priority);
2915 fs->table_id = ofs->table_id;
2916 fs->duration_sec = ntohl(ofs->duration_sec);
2917 fs->duration_nsec = ntohl(ofs->duration_nsec);
2918 fs->idle_timeout = ntohs(ofs->idle_timeout);
2919 fs->hard_timeout = ntohs(ofs->hard_timeout);
2920 if (oh->version >= OFP14_VERSION) {
2921 fs->importance = ntohs(ofs->importance);
2925 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2926 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2936 fs->cookie = ofs->cookie;
2937 fs->packet_count = ntohll(ofs->packet_count);
2938 fs->byte_count = ntohll(ofs->byte_count);
2939 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2940 const struct ofp10_flow_stats *ofs;
2943 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2945 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2946 "bytes at end", msg->size);
2950 length = ntohs(ofs->length);
2951 if (length < sizeof *ofs) {
2952 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2953 "length %"PRIuSIZE, length);
2956 instructions_len = length - sizeof *ofs;
2958 fs->cookie = get_32aligned_be64(&ofs->cookie);
2959 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2960 fs->priority = ntohs(ofs->priority);
2961 fs->table_id = ofs->table_id;
2962 fs->duration_sec = ntohl(ofs->duration_sec);
2963 fs->duration_nsec = ntohl(ofs->duration_nsec);
2964 fs->idle_timeout = ntohs(ofs->idle_timeout);
2965 fs->hard_timeout = ntohs(ofs->hard_timeout);
2969 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2970 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2972 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2973 const struct nx_flow_stats *nfs;
2974 size_t match_len, length;
2976 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2978 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2979 "bytes at end", msg->size);
2983 length = ntohs(nfs->length);
2984 match_len = ntohs(nfs->match_len);
2985 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2986 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2987 "claims invalid length %"PRIuSIZE, match_len, length);
2990 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2993 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2995 fs->cookie = nfs->cookie;
2996 fs->table_id = nfs->table_id;
2997 fs->duration_sec = ntohl(nfs->duration_sec);
2998 fs->duration_nsec = ntohl(nfs->duration_nsec);
2999 fs->priority = ntohs(nfs->priority);
3000 fs->idle_timeout = ntohs(nfs->idle_timeout);
3001 fs->hard_timeout = ntohs(nfs->hard_timeout);
3005 if (flow_age_extension) {
3006 if (nfs->idle_age) {
3007 fs->idle_age = ntohs(nfs->idle_age) - 1;
3009 if (nfs->hard_age) {
3010 fs->hard_age = ntohs(nfs->hard_age) - 1;
3013 fs->packet_count = ntohll(nfs->packet_count);
3014 fs->byte_count = ntohll(nfs->byte_count);
3020 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
3022 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
3025 fs->ofpacts = ofpacts->data;
3026 fs->ofpacts_len = ofpacts->size;
3031 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
3033 * We use this in situations where OVS internally uses UINT64_MAX to mean
3034 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
3036 unknown_to_zero(uint64_t count)
3038 return count != UINT64_MAX ? count : 0;
3041 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
3042 * those already present in the list of ofpbufs in 'replies'. 'replies' should
3043 * have been initialized with ofpmp_init(). */
3045 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
3046 struct ovs_list *replies)
3048 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
3049 size_t start_ofs = reply->size;
3050 enum ofp_version version = ofpmp_version(replies);
3051 enum ofpraw raw = ofpmp_decode_raw(replies);
3053 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
3054 struct ofp11_flow_stats *ofs;
3056 ofpbuf_put_uninit(reply, sizeof *ofs);
3057 oxm_put_match(reply, &fs->match, version);
3058 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
3061 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3062 ofs->length = htons(reply->size - start_ofs);
3063 ofs->table_id = fs->table_id;
3065 ofs->duration_sec = htonl(fs->duration_sec);
3066 ofs->duration_nsec = htonl(fs->duration_nsec);
3067 ofs->priority = htons(fs->priority);
3068 ofs->idle_timeout = htons(fs->idle_timeout);
3069 ofs->hard_timeout = htons(fs->hard_timeout);
3070 if (version >= OFP14_VERSION) {
3071 ofs->importance = htons(fs->importance);
3073 ofs->importance = 0;
3075 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3076 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3080 memset(ofs->pad2, 0, sizeof ofs->pad2);
3081 ofs->cookie = fs->cookie;
3082 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3083 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3084 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3085 struct ofp10_flow_stats *ofs;
3087 ofpbuf_put_uninit(reply, sizeof *ofs);
3088 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3090 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3091 ofs->length = htons(reply->size - start_ofs);
3092 ofs->table_id = fs->table_id;
3094 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3095 ofs->duration_sec = htonl(fs->duration_sec);
3096 ofs->duration_nsec = htonl(fs->duration_nsec);
3097 ofs->priority = htons(fs->priority);
3098 ofs->idle_timeout = htons(fs->idle_timeout);
3099 ofs->hard_timeout = htons(fs->hard_timeout);
3100 memset(ofs->pad2, 0, sizeof ofs->pad2);
3101 put_32aligned_be64(&ofs->cookie, fs->cookie);
3102 put_32aligned_be64(&ofs->packet_count,
3103 htonll(unknown_to_zero(fs->packet_count)));
3104 put_32aligned_be64(&ofs->byte_count,
3105 htonll(unknown_to_zero(fs->byte_count)));
3106 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3107 struct nx_flow_stats *nfs;
3110 ofpbuf_put_uninit(reply, sizeof *nfs);
3111 match_len = nx_put_match(reply, &fs->match, 0, 0);
3112 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3114 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3115 nfs->length = htons(reply->size - start_ofs);
3116 nfs->table_id = fs->table_id;
3118 nfs->duration_sec = htonl(fs->duration_sec);
3119 nfs->duration_nsec = htonl(fs->duration_nsec);
3120 nfs->priority = htons(fs->priority);
3121 nfs->idle_timeout = htons(fs->idle_timeout);
3122 nfs->hard_timeout = htons(fs->hard_timeout);
3123 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3124 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3126 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3127 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3129 nfs->match_len = htons(match_len);
3130 nfs->cookie = fs->cookie;
3131 nfs->packet_count = htonll(fs->packet_count);
3132 nfs->byte_count = htonll(fs->byte_count);
3137 ofpmp_postappend(replies, start_ofs);
3140 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3141 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3143 ofputil_encode_aggregate_stats_reply(
3144 const struct ofputil_aggregate_stats *stats,
3145 const struct ofp_header *request)
3147 struct ofp_aggregate_stats_reply *asr;
3148 uint64_t packet_count;
3149 uint64_t byte_count;
3153 ofpraw_decode(&raw, request);
3154 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3155 packet_count = unknown_to_zero(stats->packet_count);
3156 byte_count = unknown_to_zero(stats->byte_count);
3158 packet_count = stats->packet_count;
3159 byte_count = stats->byte_count;
3162 msg = ofpraw_alloc_stats_reply(request, 0);
3163 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3164 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3165 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3166 asr->flow_count = htonl(stats->flow_count);
3172 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3173 const struct ofp_header *reply)
3175 struct ofp_aggregate_stats_reply *asr;
3178 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3179 ofpraw_pull_assert(&msg);
3182 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3183 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3184 stats->flow_count = ntohl(asr->flow_count);
3189 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3190 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3191 * an OpenFlow error code. */
3193 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3194 const struct ofp_header *oh)
3199 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3200 raw = ofpraw_pull_assert(&b);
3201 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3202 const struct ofp12_flow_removed *ofr;
3205 ofr = ofpbuf_pull(&b, sizeof *ofr);
3207 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3212 fr->priority = ntohs(ofr->priority);
3213 fr->cookie = ofr->cookie;
3214 fr->reason = ofr->reason;
3215 fr->table_id = ofr->table_id;
3216 fr->duration_sec = ntohl(ofr->duration_sec);
3217 fr->duration_nsec = ntohl(ofr->duration_nsec);
3218 fr->idle_timeout = ntohs(ofr->idle_timeout);
3219 fr->hard_timeout = ntohs(ofr->hard_timeout);
3220 fr->packet_count = ntohll(ofr->packet_count);
3221 fr->byte_count = ntohll(ofr->byte_count);
3222 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3223 const struct ofp10_flow_removed *ofr;
3225 ofr = ofpbuf_pull(&b, sizeof *ofr);
3227 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3228 fr->priority = ntohs(ofr->priority);
3229 fr->cookie = ofr->cookie;
3230 fr->reason = ofr->reason;
3232 fr->duration_sec = ntohl(ofr->duration_sec);
3233 fr->duration_nsec = ntohl(ofr->duration_nsec);
3234 fr->idle_timeout = ntohs(ofr->idle_timeout);
3235 fr->hard_timeout = 0;
3236 fr->packet_count = ntohll(ofr->packet_count);
3237 fr->byte_count = ntohll(ofr->byte_count);
3238 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3239 struct nx_flow_removed *nfr;
3242 nfr = ofpbuf_pull(&b, sizeof *nfr);
3243 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3249 return OFPERR_OFPBRC_BAD_LEN;
3252 fr->priority = ntohs(nfr->priority);
3253 fr->cookie = nfr->cookie;
3254 fr->reason = nfr->reason;
3255 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3256 fr->duration_sec = ntohl(nfr->duration_sec);
3257 fr->duration_nsec = ntohl(nfr->duration_nsec);
3258 fr->idle_timeout = ntohs(nfr->idle_timeout);
3259 fr->hard_timeout = 0;
3260 fr->packet_count = ntohll(nfr->packet_count);
3261 fr->byte_count = ntohll(nfr->byte_count);
3269 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3270 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3273 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3274 enum ofputil_protocol protocol)
3277 enum ofp_flow_removed_reason reason = fr->reason;
3279 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3280 reason = OFPRR_DELETE;
3284 case OFPUTIL_P_OF11_STD:
3285 case OFPUTIL_P_OF12_OXM:
3286 case OFPUTIL_P_OF13_OXM:
3287 case OFPUTIL_P_OF14_OXM:
3288 case OFPUTIL_P_OF15_OXM: {
3289 struct ofp12_flow_removed *ofr;
3291 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3292 ofputil_protocol_to_ofp_version(protocol),
3294 ofputil_match_typical_len(protocol));
3295 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3296 ofr->cookie = fr->cookie;
3297 ofr->priority = htons(fr->priority);
3298 ofr->reason = reason;
3299 ofr->table_id = fr->table_id;
3300 ofr->duration_sec = htonl(fr->duration_sec);
3301 ofr->duration_nsec = htonl(fr->duration_nsec);
3302 ofr->idle_timeout = htons(fr->idle_timeout);
3303 ofr->hard_timeout = htons(fr->hard_timeout);
3304 ofr->packet_count = htonll(fr->packet_count);
3305 ofr->byte_count = htonll(fr->byte_count);
3306 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3310 case OFPUTIL_P_OF10_STD:
3311 case OFPUTIL_P_OF10_STD_TID: {
3312 struct ofp10_flow_removed *ofr;
3314 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3316 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3317 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3318 ofr->cookie = fr->cookie;
3319 ofr->priority = htons(fr->priority);
3320 ofr->reason = reason;
3321 ofr->duration_sec = htonl(fr->duration_sec);
3322 ofr->duration_nsec = htonl(fr->duration_nsec);
3323 ofr->idle_timeout = htons(fr->idle_timeout);
3324 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3325 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3329 case OFPUTIL_P_OF10_NXM:
3330 case OFPUTIL_P_OF10_NXM_TID: {
3331 struct nx_flow_removed *nfr;
3334 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3335 htonl(0), NXM_TYPICAL_LEN);
3336 ofpbuf_put_zeros(msg, sizeof *nfr);
3337 match_len = nx_put_match(msg, &fr->match, 0, 0);
3340 nfr->cookie = fr->cookie;
3341 nfr->priority = htons(fr->priority);
3342 nfr->reason = reason;
3343 nfr->table_id = fr->table_id + 1;
3344 nfr->duration_sec = htonl(fr->duration_sec);
3345 nfr->duration_nsec = htonl(fr->duration_nsec);
3346 nfr->idle_timeout = htons(fr->idle_timeout);
3347 nfr->match_len = htons(match_len);
3348 nfr->packet_count = htonll(fr->packet_count);
3349 nfr->byte_count = htonll(fr->byte_count);
3361 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3362 const struct ofp_header *oh)
3367 memset(pin, 0, sizeof *pin);
3368 pin->cookie = OVS_BE64_MAX;
3370 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3371 raw = ofpraw_pull_assert(&b);
3372 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3373 const struct ofp13_packet_in *opi;
3375 size_t packet_in_size;
3377 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3378 packet_in_size = sizeof (struct ofp12_packet_in);
3380 packet_in_size = sizeof (struct ofp13_packet_in);
3383 opi = ofpbuf_pull(&b, packet_in_size);
3384 error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3389 if (!ofpbuf_try_pull(&b, 2)) {
3390 return OFPERR_OFPBRC_BAD_LEN;
3393 pin->reason = opi->pi.reason;
3394 pin->table_id = opi->pi.table_id;
3395 pin->buffer_id = ntohl(opi->pi.buffer_id);
3396 pin->total_len = ntohs(opi->pi.total_len);
3398 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3399 pin->cookie = opi->cookie;
3402 pin->packet = b.data;
3403 pin->packet_len = b.size;
3404 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3405 const struct ofp10_packet_in *opi;
3407 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3409 pin->packet = opi->data;
3410 pin->packet_len = b.size;
3412 match_init_catchall(&pin->flow_metadata);
3413 match_set_in_port(&pin->flow_metadata, u16_to_ofp(ntohs(opi->in_port)));
3414 pin->reason = opi->reason;
3415 pin->buffer_id = ntohl(opi->buffer_id);
3416 pin->total_len = ntohs(opi->total_len);
3417 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3418 const struct ofp11_packet_in *opi;
3422 opi = ofpbuf_pull(&b, sizeof *opi);
3424 pin->packet = b.data;
3425 pin->packet_len = b.size;
3427 pin->buffer_id = ntohl(opi->buffer_id);
3428 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3432 match_init_catchall(&pin->flow_metadata);
3433 match_set_in_port(&pin->flow_metadata, in_port);
3434 pin->total_len = ntohs(opi->total_len);
3435 pin->reason = opi->reason;
3436 pin->table_id = opi->table_id;
3437 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3438 const struct nx_packet_in *npi;
3441 npi = ofpbuf_pull(&b, sizeof *npi);
3442 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3443 &pin->flow_metadata, NULL, NULL);
3448 if (!ofpbuf_try_pull(&b, 2)) {
3449 return OFPERR_OFPBRC_BAD_LEN;
3452 pin->reason = npi->reason;
3453 pin->table_id = npi->table_id;
3454 pin->cookie = npi->cookie;
3456 pin->buffer_id = ntohl(npi->buffer_id);
3457 pin->total_len = ntohs(npi->total_len);
3459 pin->packet = b.data;
3460 pin->packet_len = b.size;
3468 static struct ofpbuf *
3469 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3471 struct ofp10_packet_in *opi;
3472 struct ofpbuf *packet;
3474 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3475 htonl(0), pin->packet_len);
3476 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3477 opi->total_len = htons(pin->total_len);
3478 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3479 opi->reason = pin->reason;
3480 opi->buffer_id = htonl(pin->buffer_id);
3482 ofpbuf_put(packet, pin->packet, pin->packet_len);
3487 static struct ofpbuf *
3488 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3490 struct nx_packet_in *npi;
3491 struct ofpbuf *packet;
3494 /* The final argument is just an estimate of the space required. */
3495 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3496 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3497 ofpbuf_put_zeros(packet, sizeof *npi);
3498 match_len = nx_put_match(packet, &pin->flow_metadata, 0, 0);
3499 ofpbuf_put_zeros(packet, 2);
3500 ofpbuf_put(packet, pin->packet, pin->packet_len);
3503 npi->buffer_id = htonl(pin->buffer_id);
3504 npi->total_len = htons(pin->total_len);
3505 npi->reason = pin->reason;
3506 npi->table_id = pin->table_id;
3507 npi->cookie = pin->cookie;
3508 npi->match_len = htons(match_len);
3513 static struct ofpbuf *
3514 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3516 struct ofp11_packet_in *opi;
3517 struct ofpbuf *packet;
3519 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3520 htonl(0), pin->packet_len);
3521 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3522 opi->buffer_id = htonl(pin->buffer_id);
3523 opi->in_port = ofputil_port_to_ofp11(pin->flow_metadata.flow.in_port.ofp_port);
3524 opi->in_phy_port = opi->in_port;
3525 opi->total_len = htons(pin->total_len);
3526 opi->reason = pin->reason;
3527 opi->table_id = pin->table_id;
3529 ofpbuf_put(packet, pin->packet, pin->packet_len);
3534 static struct ofpbuf *
3535 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3536 enum ofputil_protocol protocol)
3538 struct ofp13_packet_in *opi;
3539 enum ofpraw packet_in_raw;
3540 enum ofp_version packet_in_version;
3541 size_t packet_in_size;
3542 struct ofpbuf *packet;
3544 if (protocol == OFPUTIL_P_OF12_OXM) {
3545 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3546 packet_in_version = OFP12_VERSION;
3547 packet_in_size = sizeof (struct ofp12_packet_in);
3549 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3550 packet_in_version = ofputil_protocol_to_ofp_version(protocol);
3551 packet_in_size = sizeof (struct ofp13_packet_in);
3554 /* The final argument is just an estimate of the space required. */
3555 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3556 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3557 ofpbuf_put_zeros(packet, packet_in_size);
3558 oxm_put_match(packet, &pin->flow_metadata,
3559 ofputil_protocol_to_ofp_version(protocol));
3560 ofpbuf_put_zeros(packet, 2);
3561 ofpbuf_put(packet, pin->packet, pin->packet_len);
3564 opi->pi.buffer_id = htonl(pin->buffer_id);
3565 opi->pi.total_len = htons(pin->total_len);
3566 opi->pi.reason = pin->reason;
3567 opi->pi.table_id = pin->table_id;
3568 if (protocol != OFPUTIL_P_OF12_OXM) {
3569 opi->cookie = pin->cookie;
3575 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3576 * in the format specified by 'packet_in_format'. */
3578 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3579 enum ofputil_protocol protocol,
3580 enum nx_packet_in_format packet_in_format)
3582 struct ofpbuf *packet;
3585 case OFPUTIL_P_OF10_STD:
3586 case OFPUTIL_P_OF10_STD_TID:
3587 case OFPUTIL_P_OF10_NXM:
3588 case OFPUTIL_P_OF10_NXM_TID:
3589 packet = (packet_in_format == NXPIF_NXM
3590 ? ofputil_encode_nx_packet_in(pin)
3591 : ofputil_encode_ofp10_packet_in(pin));
3594 case OFPUTIL_P_OF11_STD:
3595 packet = ofputil_encode_ofp11_packet_in(pin);
3598 case OFPUTIL_P_OF12_OXM:
3599 case OFPUTIL_P_OF13_OXM:
3600 case OFPUTIL_P_OF14_OXM:
3601 case OFPUTIL_P_OF15_OXM:
3602 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3609 ofpmsg_update_length(packet);
3613 /* Returns a string form of 'reason'. The return value is either a statically
3614 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3615 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3617 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3618 char *reasonbuf, size_t bufsize)
3625 case OFPR_INVALID_TTL:
3626 return "invalid_ttl";
3627 case OFPR_ACTION_SET:
3628 return "action_set";
3631 case OFPR_PACKET_OUT:
3632 return "packet_out";
3634 case OFPR_N_REASONS:
3636 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3642 ofputil_packet_in_reason_from_string(const char *s,
3643 enum ofp_packet_in_reason *reason)
3647 for (i = 0; i < OFPR_N_REASONS; i++) {
3648 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3649 const char *reason_s;
3651 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3653 if (!strcasecmp(s, reason_s)) {
3661 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3664 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3665 * message's actions. The caller must initialize 'ofpacts' and retains
3666 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3668 * Returns 0 if successful, otherwise an OFPERR_* value. */
3670 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3671 const struct ofp_header *oh,
3672 struct ofpbuf *ofpacts)
3677 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3678 raw = ofpraw_pull_assert(&b);
3680 ofpbuf_clear(ofpacts);
3681 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3683 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3685 po->buffer_id = ntohl(opo->buffer_id);
3686 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3691 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3692 oh->version, ofpacts);
3696 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3698 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3700 po->buffer_id = ntohl(opo->buffer_id);
3701 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3703 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3704 oh->version, ofpacts);
3712 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3713 && po->in_port != OFPP_LOCAL
3714 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3715 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3717 return OFPERR_OFPBRC_BAD_PORT;
3720 po->ofpacts = ofpacts->data;
3721 po->ofpacts_len = ofpacts->size;
3723 if (po->buffer_id == UINT32_MAX) {
3724 po->packet = b.data;
3725 po->packet_len = b.size;
3734 /* ofputil_phy_port */
3736 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3737 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3738 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3739 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3740 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3741 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3742 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3743 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3745 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3746 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3747 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3748 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3749 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3750 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3752 static enum netdev_features
3753 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3755 uint32_t ofp10 = ntohl(ofp10_);
3756 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3760 netdev_port_features_to_ofp10(enum netdev_features features)
3762 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3765 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3766 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3767 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3768 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3769 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3770 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3771 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3772 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3773 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3774 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3775 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3776 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3777 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3778 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3779 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3780 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3782 static enum netdev_features
3783 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3785 return ntohl(ofp11) & 0xffff;
3789 netdev_port_features_to_ofp11(enum netdev_features features)
3791 return htonl(features & 0xffff);
3795 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3796 const struct ofp10_phy_port *opp)
3798 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3799 pp->hw_addr = opp->hw_addr;
3800 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3802 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3803 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3805 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3806 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3807 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3808 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3810 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3811 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3817 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3818 const struct ofp11_port *op)
3822 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3826 pp->hw_addr = op->hw_addr;
3827 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3829 pp->config = ntohl(op->config) & OFPPC11_ALL;
3830 pp->state = ntohl(op->state) & OFPPS11_ALL;
3832 pp->curr = netdev_port_features_from_ofp11(op->curr);
3833 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3834 pp->supported = netdev_port_features_from_ofp11(op->supported);
3835 pp->peer = netdev_port_features_from_ofp11(op->peer);
3837 pp->curr_speed = ntohl(op->curr_speed);
3838 pp->max_speed = ntohl(op->max_speed);
3844 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3845 struct ofputil_phy_port *pp)
3847 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3849 if (payload->size != sizeof *eth) {
3850 return OFPERR_OFPBPC_BAD_LEN;
3853 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3854 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3855 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3856 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3858 pp->curr_speed = ntohl(eth->curr_speed);
3859 pp->max_speed = ntohl(eth->max_speed);
3865 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3867 struct ofpbuf properties;
3868 struct ofp14_port *op;
3872 op = ofpbuf_try_pull(msg, sizeof *op);
3874 return OFPERR_OFPBRC_BAD_LEN;
3877 len = ntohs(op->length);
3878 if (len < sizeof *op || len - sizeof *op > msg->size) {
3879 return OFPERR_OFPBRC_BAD_LEN;
3882 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3884 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3888 pp->hw_addr = op->hw_addr;
3889 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3891 pp->config = ntohl(op->config) & OFPPC11_ALL;
3892 pp->state = ntohl(op->state) & OFPPS11_ALL;
3894 while (properties.size > 0) {
3895 struct ofpbuf payload;
3899 error = ofputil_pull_property(&properties, &payload, &type);
3905 case OFPPDPT14_ETHERNET:
3906 error = parse_ofp14_port_ethernet_property(&payload, pp);
3910 log_property(true, "unknown port property %"PRIu16, type);
3924 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3925 struct ofp10_phy_port *opp)
3927 memset(opp, 0, sizeof *opp);
3929 opp->port_no = htons(ofp_to_u16(pp->port_no));
3930 opp->hw_addr = pp->hw_addr;
3931 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3933 opp->config = htonl(pp->config & OFPPC10_ALL);
3934 opp->state = htonl(pp->state & OFPPS10_ALL);
3936 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3937 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3938 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3939 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3943 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3944 struct ofp11_port *op)
3946 memset(op, 0, sizeof *op);
3948 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3949 op->hw_addr = pp->hw_addr;
3950 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3952 op->config = htonl(pp->config & OFPPC11_ALL);
3953 op->state = htonl(pp->state & OFPPS11_ALL);
3955 op->curr = netdev_port_features_to_ofp11(pp->curr);
3956 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3957 op->supported = netdev_port_features_to_ofp11(pp->supported);
3958 op->peer = netdev_port_features_to_ofp11(pp->peer);
3960 op->curr_speed = htonl(pp->curr_speed);
3961 op->max_speed = htonl(pp->max_speed);
3965 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3968 struct ofp14_port *op;
3969 struct ofp14_port_desc_prop_ethernet *eth;
3971 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3973 op = ofpbuf_put_zeros(b, sizeof *op);
3974 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3975 op->length = htons(sizeof *op + sizeof *eth);
3976 op->hw_addr = pp->hw_addr;
3977 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3978 op->config = htonl(pp->config & OFPPC11_ALL);
3979 op->state = htonl(pp->state & OFPPS11_ALL);
3981 eth = ofpbuf_put_zeros(b, sizeof *eth);
3982 eth->type = htons(OFPPDPT14_ETHERNET);
3983 eth->length = htons(sizeof *eth);
3984 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3985 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3986 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3987 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3988 eth->curr_speed = htonl(pp->curr_speed);
3989 eth->max_speed = htonl(pp->max_speed);
3993 ofputil_put_phy_port(enum ofp_version ofp_version,
3994 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3996 switch (ofp_version) {
3997 case OFP10_VERSION: {
3998 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3999 ofputil_encode_ofp10_phy_port(pp, opp);
4005 case OFP13_VERSION: {
4006 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
4007 ofputil_encode_ofp11_port(pp, op);
4013 ofputil_put_ofp14_port(pp, b);
4022 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
4028 ofpbuf_use_const(&b, request, ntohs(request->length));
4029 raw = ofpraw_pull_assert(&b);
4030 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4033 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4034 ovs_be32 *ofp11_port;
4036 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4037 return ofputil_port_from_ofp11(*ofp11_port, port);
4044 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4047 struct ofpbuf *request;
4049 switch (ofp_version) {
4055 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4058 case OFP15_VERSION:{
4059 struct ofp15_port_desc_request *req;
4060 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4062 req = ofpbuf_put_zeros(request, sizeof *req);
4063 req->port_no = ofputil_port_to_ofp11(port);
4074 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4075 struct ovs_list *replies)
4077 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4078 size_t start_ofs = reply->size;
4080 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4081 ofpmp_postappend(replies, start_ofs);
4084 /* ofputil_switch_config */
4086 /* Decodes 'oh', which must be an OFPT_GET_CONFIG_REPLY or OFPT_SET_CONFIG
4087 * message, into 'config'. Returns false if 'oh' contained any flags that
4088 * aren't specified in its version of OpenFlow, true otherwise. */
4090 ofputil_decode_switch_config(const struct ofp_header *oh,
4091 struct ofputil_switch_config *config)
4093 const struct ofp_switch_config *osc;
4096 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4097 ofpraw_pull_assert(&b);
4098 osc = ofpbuf_pull(&b, sizeof *osc);
4100 config->frag = ntohs(osc->flags) & OFPC_FRAG_MASK;
4101 config->miss_send_len = ntohs(osc->miss_send_len);
4103 ovs_be16 valid_mask = htons(OFPC_FRAG_MASK);
4104 if (oh->version < OFP13_VERSION) {
4105 const ovs_be16 ttl_bit = htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4106 valid_mask |= ttl_bit;
4107 config->invalid_ttl_to_controller = (osc->flags & ttl_bit) != 0;
4109 config->invalid_ttl_to_controller = -1;
4112 return !(osc->flags & ~valid_mask);
4116 ofputil_decode_get_config_reply(const struct ofp_header *oh,
4117 struct ofputil_switch_config *config)
4119 ofputil_decode_switch_config(oh, config);
4123 ofputil_decode_set_config(const struct ofp_header *oh,
4124 struct ofputil_switch_config *config)
4126 return (ofputil_decode_switch_config(oh, config)
4128 : OFPERR_OFPSCFC_BAD_FLAGS);
4131 static struct ofpbuf *
4132 ofputil_put_switch_config(const struct ofputil_switch_config *config,
4135 const struct ofp_header *oh = b->data;
4136 struct ofp_switch_config *osc = ofpbuf_put_zeros(b, sizeof *osc);
4137 osc->flags = htons(config->frag);
4138 if (config->invalid_ttl_to_controller > 0 && oh->version < OFP13_VERSION) {
4139 osc->flags |= htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4141 osc->miss_send_len = htons(config->miss_send_len);
4146 ofputil_encode_get_config_reply(const struct ofp_header *request,
4147 const struct ofputil_switch_config *config)
4149 struct ofpbuf *b = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY,
4151 return ofputil_put_switch_config(config, b);
4155 ofputil_encode_set_config(const struct ofputil_switch_config *config,
4156 enum ofp_version version)
4158 struct ofpbuf *b = ofpraw_alloc(OFPRAW_OFPT_SET_CONFIG, version, 0);
4159 return ofputil_put_switch_config(config, b);
4162 /* ofputil_switch_features */
4164 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4165 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4166 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4167 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4168 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4169 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4170 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4171 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4174 ofputil_capabilities_mask(enum ofp_version ofp_version)
4176 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4177 switch (ofp_version) {
4180 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4185 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4187 /* Caller needs to check osf->header.version itself */
4192 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4193 * abstract representation in '*features'. Initializes '*b' to iterate over
4194 * the OpenFlow port structures following 'osf' with later calls to
4195 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4196 * OFPERR_* value. */
4198 ofputil_decode_switch_features(const struct ofp_header *oh,
4199 struct ofputil_switch_features *features,
4202 const struct ofp_switch_features *osf;
4205 ofpbuf_use_const(b, oh, ntohs(oh->length));
4206 raw = ofpraw_pull_assert(b);
4208 osf = ofpbuf_pull(b, sizeof *osf);
4209 features->datapath_id = ntohll(osf->datapath_id);
4210 features->n_buffers = ntohl(osf->n_buffers);
4211 features->n_tables = osf->n_tables;
4212 features->auxiliary_id = 0;
4214 features->capabilities = ntohl(osf->capabilities) &
4215 ofputil_capabilities_mask(oh->version);
4217 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4218 if (osf->capabilities & htonl(OFPC10_STP)) {
4219 features->capabilities |= OFPUTIL_C_STP;
4221 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4223 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4224 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4225 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4226 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4228 features->ofpacts = 0;
4229 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4230 features->auxiliary_id = osf->auxiliary_id;
4233 return OFPERR_OFPBRC_BAD_VERSION;
4239 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4240 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4241 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4243 * Given a buffer 'b' that contains a Features Reply message, this message
4244 * checks if it contains a complete list of the switch's ports. Returns true,
4245 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4246 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4249 * When this function returns false, the caller should send an OFPST_PORT_DESC
4250 * stats request to get the ports. */
4252 ofputil_switch_features_has_ports(struct ofpbuf *b)
4254 struct ofp_header *oh = b->data;
4255 size_t phy_port_size;
4257 if (oh->version >= OFP13_VERSION) {
4258 /* OpenFlow 1.3+ never has ports in the feature reply. */
4262 phy_port_size = (oh->version == OFP10_VERSION
4263 ? sizeof(struct ofp10_phy_port)
4264 : sizeof(struct ofp11_port));
4265 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4266 /* There's room for additional ports in the feature reply.
4267 * Assume that the list is complete. */
4271 /* The feature reply has no room for more ports. Probably the list is
4272 * truncated. Drop the ports and tell the caller to retrieve them with
4273 * OFPST_PORT_DESC. */
4274 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4275 ofpmsg_update_length(b);
4279 /* Returns a buffer owned by the caller that encodes 'features' in the format
4280 * required by 'protocol' with the given 'xid'. The caller should append port
4281 * information to the buffer with subsequent calls to
4282 * ofputil_put_switch_features_port(). */
4284 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4285 enum ofputil_protocol protocol, ovs_be32 xid)
4287 struct ofp_switch_features *osf;
4289 enum ofp_version version;
4292 version = ofputil_protocol_to_ofp_version(protocol);
4295 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4299 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4304 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4309 b = ofpraw_alloc_xid(raw, version, xid, 0);
4310 osf = ofpbuf_put_zeros(b, sizeof *osf);
4311 osf->datapath_id = htonll(features->datapath_id);
4312 osf->n_buffers = htonl(features->n_buffers);
4313 osf->n_tables = features->n_tables;
4315 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4316 osf->capabilities = htonl(features->capabilities &
4317 ofputil_capabilities_mask(version));
4320 if (features->capabilities & OFPUTIL_C_STP) {
4321 osf->capabilities |= htonl(OFPC10_STP);
4323 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4329 osf->auxiliary_id = features->auxiliary_id;
4333 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4334 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4344 /* Encodes 'pp' into the format required by the switch_features message already
4345 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4346 * and appends the encoded version to 'b'. */
4348 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4351 const struct ofp_header *oh = b->data;
4353 if (oh->version < OFP13_VERSION) {
4354 /* Try adding a port description to the message, but drop it again if
4355 * the buffer overflows. (This possibility for overflow is why
4356 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4357 size_t start_ofs = b->size;
4358 ofputil_put_phy_port(oh->version, pp, b);
4359 if (b->size > UINT16_MAX) {
4360 b->size = start_ofs;
4365 /* ofputil_port_status */
4367 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4368 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4370 ofputil_decode_port_status(const struct ofp_header *oh,
4371 struct ofputil_port_status *ps)
4373 const struct ofp_port_status *ops;
4377 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4378 ofpraw_pull_assert(&b);
4379 ops = ofpbuf_pull(&b, sizeof *ops);
4381 if (ops->reason != OFPPR_ADD &&
4382 ops->reason != OFPPR_DELETE &&
4383 ops->reason != OFPPR_MODIFY) {
4384 return OFPERR_NXBRC_BAD_REASON;
4386 ps->reason = ops->reason;
4388 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4389 ovs_assert(retval != EOF);
4393 /* Converts the abstract form of a "port status" message in '*ps' into an
4394 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4395 * a buffer owned by the caller. */
4397 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4398 enum ofputil_protocol protocol)
4400 struct ofp_port_status *ops;
4402 enum ofp_version version;
4405 version = ofputil_protocol_to_ofp_version(protocol);
4408 raw = OFPRAW_OFPT10_PORT_STATUS;
4414 raw = OFPRAW_OFPT11_PORT_STATUS;
4419 raw = OFPRAW_OFPT14_PORT_STATUS;
4426 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4427 ops = ofpbuf_put_zeros(b, sizeof *ops);
4428 ops->reason = ps->reason;
4429 ofputil_put_phy_port(version, &ps->desc, b);
4430 ofpmsg_update_length(b);
4434 /* ofputil_port_mod */
4437 parse_port_mod_ethernet_property(struct ofpbuf *property,
4438 struct ofputil_port_mod *pm)
4440 struct ofp14_port_mod_prop_ethernet *eth = property->data;
4442 if (property->size != sizeof *eth) {
4443 return OFPERR_OFPBRC_BAD_LEN;
4446 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4450 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4451 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4453 ofputil_decode_port_mod(const struct ofp_header *oh,
4454 struct ofputil_port_mod *pm, bool loose)
4459 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4460 raw = ofpraw_pull_assert(&b);
4462 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4463 const struct ofp10_port_mod *opm = b.data;
4465 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4466 pm->hw_addr = opm->hw_addr;
4467 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4468 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4469 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4470 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4471 const struct ofp11_port_mod *opm = b.data;
4474 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4479 pm->hw_addr = opm->hw_addr;
4480 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4481 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4482 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4483 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4484 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4487 memset(pm, 0, sizeof *pm);
4489 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4494 pm->hw_addr = opm->hw_addr;
4495 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4496 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4498 while (b.size > 0) {
4499 struct ofpbuf property;
4503 error = ofputil_pull_property(&b, &property, &type);
4509 case OFPPMPT14_ETHERNET:
4510 error = parse_port_mod_ethernet_property(&property, pm);
4514 log_property(loose, "unknown port_mod property %"PRIu16, type);
4517 } else if (type == OFPPMPT14_EXPERIMENTER) {
4518 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4520 error = OFPERR_OFPBRC_BAD_TYPE;
4530 return OFPERR_OFPBRC_BAD_TYPE;
4533 pm->config &= pm->mask;
4537 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4538 * message suitable for 'protocol', and returns that encoded form in a buffer
4539 * owned by the caller. */
4541 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4542 enum ofputil_protocol protocol)
4544 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4547 switch (ofp_version) {
4548 case OFP10_VERSION: {
4549 struct ofp10_port_mod *opm;
4551 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4552 opm = ofpbuf_put_zeros(b, sizeof *opm);
4553 opm->port_no = htons(ofp_to_u16(pm->port_no));
4554 opm->hw_addr = pm->hw_addr;
4555 opm->config = htonl(pm->config & OFPPC10_ALL);
4556 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4557 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4563 case OFP13_VERSION: {
4564 struct ofp11_port_mod *opm;
4566 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4567 opm = ofpbuf_put_zeros(b, sizeof *opm);
4568 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4569 opm->hw_addr = pm->hw_addr;
4570 opm->config = htonl(pm->config & OFPPC11_ALL);
4571 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4572 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4576 case OFP15_VERSION: {
4577 struct ofp14_port_mod_prop_ethernet *eth;
4578 struct ofp14_port_mod *opm;
4580 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4581 opm = ofpbuf_put_zeros(b, sizeof *opm);
4582 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4583 opm->hw_addr = pm->hw_addr;
4584 opm->config = htonl(pm->config & OFPPC11_ALL);
4585 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4587 if (pm->advertise) {
4588 eth = ofpbuf_put_zeros(b, sizeof *eth);
4589 eth->type = htons(OFPPMPT14_ETHERNET);
4590 eth->length = htons(sizeof *eth);
4591 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4602 /* Table features. */
4605 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4610 error = ofputil_pull_property(msg, payload, typep);
4611 if (payload && !error) {
4612 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4618 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4623 while (payload->size > 0) {
4627 error = ofputil_pull_property__(payload, NULL, 1, &type);
4631 if (type < CHAR_BIT * sizeof types) {
4632 types |= 1u << type;
4636 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4641 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4644 while (payload->size > 0) {
4645 enum ovs_instruction_type inst;
4649 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4650 * It seems clear that they aren't padded to 8 bytes, though, because
4651 * both standards say that "non-experimenter instructions are 4 bytes"
4652 * and do not mention any padding before the first instruction ID.
4653 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4654 * aligned on an odd 4-byte boundary.)
4656 * Anyway, we just assume they're all glommed together on byte
4658 error = ofputil_pull_property__(payload, NULL, 1, &ofpit);
4663 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4665 *insts |= 1u << inst;
4666 } else if (!loose) {
4674 parse_table_features_next_table(struct ofpbuf *payload,
4675 unsigned long int *next_tables)
4679 memset(next_tables, 0, bitmap_n_bytes(255));
4680 for (i = 0; i < payload->size; i++) {
4681 uint8_t id = ((const uint8_t *) payload->data)[i];
4683 return OFPERR_OFPBPC_BAD_VALUE;
4685 bitmap_set1(next_tables, id);
4691 parse_oxms(struct ofpbuf *payload, bool loose,
4692 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4694 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4695 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4697 while (payload->size > 0) {
4698 const struct mf_field *field;
4702 error = nx_pull_header(payload, &field, &hasmask);
4704 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4705 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4711 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4712 return OFPERR_OFPBMC_BAD_MASK;
4716 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4717 return OFPERR_OFPBMC_BAD_MASK;
4722 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4723 * ofputil_table_features in 'tf'.
4725 * If 'loose' is true, this function ignores properties and values that it does
4726 * not understand, as a controller would want to do when interpreting
4727 * capabilities provided by a switch. If 'loose' is false, this function
4728 * treats unknown properties and values as an error, as a switch would want to
4729 * do when interpreting a configuration request made by a controller.
4731 * A single OpenFlow message can specify features for multiple tables. Calling
4732 * this function multiple times for a single 'msg' iterates through the tables
4733 * in the message. The caller must initially leave 'msg''s layer pointers null
4734 * and not modify them between calls.
4736 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4737 * a positive "enum ofperr" value. */
4739 ofputil_decode_table_features(struct ofpbuf *msg,
4740 struct ofputil_table_features *tf, bool loose)
4742 const struct ofp_header *oh;
4743 struct ofp13_table_features *otf;
4744 struct ofpbuf properties;
4747 memset(tf, 0, sizeof *tf);
4750 ofpraw_pull_assert(msg);
4758 if (msg->size < sizeof *otf) {
4759 return OFPERR_OFPBPC_BAD_LEN;
4763 len = ntohs(otf->length);
4764 if (len < sizeof *otf || len % 8 || len > msg->size) {
4765 return OFPERR_OFPBPC_BAD_LEN;
4767 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4768 ofpbuf_pull(&properties, sizeof *otf);
4770 tf->table_id = otf->table_id;
4771 if (tf->table_id == OFPTT_ALL) {
4772 return OFPERR_OFPTFFC_BAD_TABLE;
4775 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4776 tf->metadata_match = otf->metadata_match;
4777 tf->metadata_write = otf->metadata_write;
4778 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4779 if (oh->version >= OFP14_VERSION) {
4780 uint32_t caps = ntohl(otf->capabilities);
4781 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4782 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4784 tf->supports_eviction = -1;
4785 tf->supports_vacancy_events = -1;
4787 tf->max_entries = ntohl(otf->max_entries);
4789 while (properties.size > 0) {
4790 struct ofpbuf payload;
4794 error = pull_table_feature_property(&properties, &payload, &type);
4799 switch ((enum ofp13_table_feature_prop_type) type) {
4800 case OFPTFPT13_INSTRUCTIONS:
4801 error = parse_instruction_ids(&payload, loose,
4802 &tf->nonmiss.instructions);
4804 case OFPTFPT13_INSTRUCTIONS_MISS:
4805 error = parse_instruction_ids(&payload, loose,
4806 &tf->miss.instructions);
4809 case OFPTFPT13_NEXT_TABLES:
4810 error = parse_table_features_next_table(&payload,
4813 case OFPTFPT13_NEXT_TABLES_MISS:
4814 error = parse_table_features_next_table(&payload, tf->miss.next);
4817 case OFPTFPT13_WRITE_ACTIONS:
4818 error = parse_action_bitmap(&payload, oh->version,
4819 &tf->nonmiss.write.ofpacts);
4821 case OFPTFPT13_WRITE_ACTIONS_MISS:
4822 error = parse_action_bitmap(&payload, oh->version,
4823 &tf->miss.write.ofpacts);
4826 case OFPTFPT13_APPLY_ACTIONS:
4827 error = parse_action_bitmap(&payload, oh->version,
4828 &tf->nonmiss.apply.ofpacts);
4830 case OFPTFPT13_APPLY_ACTIONS_MISS:
4831 error = parse_action_bitmap(&payload, oh->version,
4832 &tf->miss.apply.ofpacts);
4835 case OFPTFPT13_MATCH:
4836 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4838 case OFPTFPT13_WILDCARDS:
4839 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4842 case OFPTFPT13_WRITE_SETFIELD:
4843 error = parse_oxms(&payload, loose,
4844 &tf->nonmiss.write.set_fields, NULL);
4846 case OFPTFPT13_WRITE_SETFIELD_MISS:
4847 error = parse_oxms(&payload, loose,
4848 &tf->miss.write.set_fields, NULL);
4850 case OFPTFPT13_APPLY_SETFIELD:
4851 error = parse_oxms(&payload, loose,
4852 &tf->nonmiss.apply.set_fields, NULL);
4854 case OFPTFPT13_APPLY_SETFIELD_MISS:
4855 error = parse_oxms(&payload, loose,
4856 &tf->miss.apply.set_fields, NULL);
4859 case OFPTFPT13_EXPERIMENTER:
4860 case OFPTFPT13_EXPERIMENTER_MISS:
4862 log_property(loose, "unknown table features property %"PRIu16,
4864 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4872 /* Fix inconsistencies:
4874 * - Turn on 'match' bits that are set in 'mask', because maskable
4875 * fields are matchable.
4877 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4878 * that is arbitrarily maskable can be wildcarded entirely.
4880 * - Turn off 'wildcard' bits that are not in 'match', because a field
4881 * must be matchable for it to be meaningfully wildcarded. */
4882 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4883 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4884 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4889 /* Encodes and returns a request to obtain the table features of a switch.
4890 * The message is encoded for OpenFlow version 'ofp_version'. */
4892 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4894 struct ofpbuf *request = NULL;
4896 switch (ofp_version) {
4900 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4901 "(\'-O OpenFlow13\')");
4905 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4916 put_fields_property(struct ofpbuf *reply,
4917 const struct mf_bitmap *fields,
4918 const struct mf_bitmap *masks,
4919 enum ofp13_table_feature_prop_type property,
4920 enum ofp_version version)
4925 start_ofs = start_property(reply, property);
4926 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4927 nx_put_header(reply, field, version,
4928 masks && bitmap_is_set(masks->bm, field));
4930 end_property(reply, start_ofs);
4934 put_table_action_features(struct ofpbuf *reply,
4935 const struct ofputil_table_action_features *taf,
4936 enum ofp13_table_feature_prop_type actions_type,
4937 enum ofp13_table_feature_prop_type set_fields_type,
4938 int miss_offset, enum ofp_version version)
4940 put_bitmap_property(reply, actions_type + miss_offset,
4941 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4943 put_fields_property(reply, &taf->set_fields, NULL,
4944 set_fields_type + miss_offset, version);
4948 put_table_instruction_features(
4949 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4950 int miss_offset, enum ofp_version version)
4955 put_bitmap_property(reply, OFPTFPT13_INSTRUCTIONS + miss_offset,
4956 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4959 start_ofs = start_property(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4960 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4961 ofpbuf_put(reply, &table_id, 1);
4963 end_property(reply, start_ofs);
4965 put_table_action_features(reply, &tif->write,
4966 OFPTFPT13_WRITE_ACTIONS,
4967 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4968 put_table_action_features(reply, &tif->apply,
4969 OFPTFPT13_APPLY_ACTIONS,
4970 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4974 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4975 struct ovs_list *replies)
4977 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4978 enum ofp_version version = ofpmp_version(replies);
4979 size_t start_ofs = reply->size;
4980 struct ofp13_table_features *otf;
4982 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4983 otf->table_id = tf->table_id;
4984 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4985 otf->metadata_match = tf->metadata_match;
4986 otf->metadata_write = tf->metadata_write;
4987 if (version >= OFP14_VERSION) {
4988 if (tf->supports_eviction) {
4989 otf->capabilities |= htonl(OFPTC14_EVICTION);
4991 if (tf->supports_vacancy_events) {
4992 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4995 otf->max_entries = htonl(tf->max_entries);
4997 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4998 put_table_instruction_features(reply, &tf->miss, 1, version);
5000 put_fields_property(reply, &tf->match, &tf->mask,
5001 OFPTFPT13_MATCH, version);
5002 put_fields_property(reply, &tf->wildcard, NULL,
5003 OFPTFPT13_WILDCARDS, version);
5005 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
5006 otf->length = htons(reply->size - start_ofs);
5007 ofpmp_postappend(replies, start_ofs);
5011 parse_table_desc_eviction_property(struct ofpbuf *property,
5012 struct ofputil_table_desc *td)
5014 struct ofp14_table_mod_prop_eviction *ote = property->data;
5016 if (property->size != sizeof *ote) {
5017 return OFPERR_OFPBPC_BAD_LEN;
5020 td->eviction_flags = ntohl(ote->flags);
5025 parse_table_desc_vacancy_property(struct ofpbuf *property,
5026 struct ofputil_table_desc *td)
5028 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5030 if (property->size != sizeof *otv) {
5031 return OFPERR_OFPBPC_BAD_LEN;
5034 td->table_vacancy.vacancy_down = otv->vacancy_down;
5035 td->table_vacancy.vacancy_up = otv->vacancy_up;
5036 td->table_vacancy.vacancy = otv->vacancy;
5040 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
5041 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
5042 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
5045 ofputil_decode_table_desc(struct ofpbuf *msg,
5046 struct ofputil_table_desc *td,
5047 enum ofp_version version)
5049 struct ofp14_table_desc *otd;
5050 struct ofpbuf properties;
5053 memset(td, 0, sizeof *td);
5056 ofpraw_pull_assert(msg);
5063 otd = ofpbuf_try_pull(msg, sizeof *otd);
5065 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
5066 "leftover bytes at end", msg->size);
5067 return OFPERR_OFPBRC_BAD_LEN;
5070 td->table_id = otd->table_id;
5071 length = ntohs(otd->length);
5072 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
5073 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
5074 "length %"PRIuSIZE, length);
5075 return OFPERR_OFPBRC_BAD_LEN;
5077 length -= sizeof *otd;
5078 ofpbuf_use_const(&properties, ofpbuf_pull(msg, length), length);
5080 td->eviction = ofputil_decode_table_eviction(otd->config, version);
5081 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
5082 td->eviction_flags = UINT32_MAX;
5084 while (properties.size > 0) {
5085 struct ofpbuf payload;
5089 error = ofputil_pull_property(&properties, &payload, &type);
5095 case OFPTMPT14_EVICTION:
5096 error = parse_table_desc_eviction_property(&payload, td);
5099 case OFPTMPT14_VACANCY:
5100 error = parse_table_desc_vacancy_property(&payload, td);
5104 log_property(true, "unknown table_desc property %"PRIu16, type);
5117 /* Encodes and returns a request to obtain description of tables of a switch.
5118 * The message is encoded for OpenFlow version 'ofp_version'. */
5120 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
5122 struct ofpbuf *request = NULL;
5124 if (ofp_version >= OFP14_VERSION) {
5125 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
5128 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
5129 "(\'-O OpenFlow14\')");
5135 /* Function to append Table desc information in a reply list. */
5137 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
5138 struct ovs_list *replies,
5139 enum ofp_version version)
5141 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5143 struct ofp14_table_desc *otd;
5145 start_otd = reply->size;
5146 ofpbuf_put_zeros(reply, sizeof *otd);
5147 if (td->eviction_flags != UINT32_MAX) {
5148 struct ofp14_table_mod_prop_eviction *ote;
5150 ote = ofpbuf_put_zeros(reply, sizeof *ote);
5151 ote->type = htons(OFPTMPT14_EVICTION);
5152 ote->length = htons(sizeof *ote);
5153 ote->flags = htonl(td->eviction_flags);
5155 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5156 struct ofp14_table_mod_prop_vacancy *otv;
5158 otv = ofpbuf_put_zeros(reply, sizeof *otv);
5159 otv->type = htons(OFPTMPT14_VACANCY);
5160 otv->length = htons(sizeof *otv);
5161 otv->vacancy_down = td->table_vacancy.vacancy_down;
5162 otv->vacancy_up = td->table_vacancy.vacancy_up;
5163 otv->vacancy = td->table_vacancy.vacancy;
5166 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5167 otd->length = htons(reply->size - start_otd);
5168 otd->table_id = td->table_id;
5169 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5170 td->eviction, td->vacancy,
5172 ofpmp_postappend(replies, start_otd);
5175 /* This function parses Vacancy property, and decodes the
5176 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5177 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5178 * greater than vacancy_up and also when current vacancy has non-zero
5179 * value. Returns 0 on success. */
5181 parse_table_mod_vacancy_property(struct ofpbuf *property,
5182 struct ofputil_table_mod *tm)
5184 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5186 if (property->size != sizeof *otv) {
5187 return OFPERR_OFPBPC_BAD_LEN;
5189 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5190 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5191 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5192 log_property(false, "Value of vacancy_down is greater than "
5194 return OFPERR_OFPBPC_BAD_VALUE;
5196 if (tm->table_vacancy.vacancy_down > 100 ||
5197 tm->table_vacancy.vacancy_up > 100) {
5198 log_property(false, "Vacancy threshold percentage should not be"
5199 "greater than 100");
5200 return OFPERR_OFPBPC_BAD_VALUE;
5202 tm->table_vacancy.vacancy = otv->vacancy;
5203 if (tm->table_vacancy.vacancy) {
5204 log_property(false, "Vacancy value should be zero for table-mod "
5206 return OFPERR_OFPBPC_BAD_VALUE;
5211 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5212 * table configuration (a table mod, table stats, or table features message),
5213 * returns the table vacancy configuration that it specifies.
5215 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5216 * so for other 'version' this function always returns
5217 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5218 static enum ofputil_table_vacancy
5219 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5221 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5222 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5223 : OFPUTIL_TABLE_VACANCY_OFF);
5227 parse_table_mod_eviction_property(struct ofpbuf *property,
5228 struct ofputil_table_mod *tm)
5230 struct ofp14_table_mod_prop_eviction *ote = property->data;
5232 if (property->size != sizeof *ote) {
5233 return OFPERR_OFPBPC_BAD_LEN;
5236 tm->eviction_flags = ntohl(ote->flags);
5240 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5241 * table configuration (a table mod, table stats, or table features message),
5242 * returns the table eviction configuration that it specifies.
5244 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5245 * so for other 'version' values this function always returns
5246 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5247 static enum ofputil_table_eviction
5248 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5250 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5251 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5252 : OFPUTIL_TABLE_EVICTION_OFF);
5255 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5256 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5257 * 'eviction' values. */
5259 ofputil_encode_table_config(enum ofputil_table_miss miss,
5260 enum ofputil_table_eviction eviction,
5261 enum ofputil_table_vacancy vacancy,
5262 enum ofp_version version)
5264 uint32_t config = 0;
5265 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5266 * information on the crazy evolution of this field. */
5269 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5274 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5276 case OFPUTIL_TABLE_MISS_DEFAULT:
5277 /* Really this shouldn't be used for encoding (the caller should
5278 * provide a specific value) but I can't imagine that defaulting to
5279 * the fall-through case here will hurt. */
5280 case OFPUTIL_TABLE_MISS_CONTROLLER:
5282 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5283 case OFPUTIL_TABLE_MISS_CONTINUE:
5284 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5285 case OFPUTIL_TABLE_MISS_DROP:
5286 return htonl(OFPTC11_TABLE_MISS_DROP);
5291 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5292 * flags, so this is correct. */
5297 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5298 * OFPTC14_VACANCY_EVENTS. */
5299 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5300 config |= OFPTC14_EVICTION;
5302 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5303 config |= OFPTC14_VACANCY_EVENTS;
5305 return htonl(config);
5311 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5312 * table configuration (a table mod, table stats, or table features message),
5313 * returns the table miss configuration that it specifies.
5315 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5316 * other 'version' values this function always returns
5317 * OFPUTIL_TABLE_MISS_DEFAULT. */
5318 static enum ofputil_table_miss
5319 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5321 uint32_t config = ntohl(config_);
5323 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5324 switch (config & OFPTC11_TABLE_MISS_MASK) {
5325 case OFPTC11_TABLE_MISS_CONTROLLER:
5326 return OFPUTIL_TABLE_MISS_CONTROLLER;
5328 case OFPTC11_TABLE_MISS_CONTINUE:
5329 return OFPUTIL_TABLE_MISS_CONTINUE;
5331 case OFPTC11_TABLE_MISS_DROP:
5332 return OFPUTIL_TABLE_MISS_DROP;
5335 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5336 return OFPUTIL_TABLE_MISS_CONTROLLER;
5339 return OFPUTIL_TABLE_MISS_DEFAULT;
5343 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5344 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5346 ofputil_decode_table_mod(const struct ofp_header *oh,
5347 struct ofputil_table_mod *pm)
5352 memset(pm, 0, sizeof *pm);
5353 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5354 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5355 pm->eviction_flags = UINT32_MAX;
5356 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5357 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5358 raw = ofpraw_pull_assert(&b);
5360 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5361 const struct ofp11_table_mod *otm = b.data;
5363 pm->table_id = otm->table_id;
5364 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5365 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5366 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5368 pm->table_id = otm->table_id;
5369 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5370 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5371 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5372 while (b.size > 0) {
5373 struct ofpbuf property;
5377 error = ofputil_pull_property(&b, &property, &type);
5383 case OFPTMPT14_EVICTION:
5384 error = parse_table_mod_eviction_property(&property, pm);
5387 case OFPTMPT14_VACANCY:
5388 error = parse_table_mod_vacancy_property(&property, pm);
5392 error = OFPERR_OFPBRC_BAD_TYPE;
5401 return OFPERR_OFPBRC_BAD_TYPE;
5407 /* Converts the abstract form of a "table mod" message in '*tm' into an
5408 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5409 * buffer owned by the caller. */
5411 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5412 enum ofputil_protocol protocol)
5414 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5417 switch (ofp_version) {
5418 case OFP10_VERSION: {
5419 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5420 "(\'-O OpenFlow11\')");
5425 case OFP13_VERSION: {
5426 struct ofp11_table_mod *otm;
5428 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5429 otm = ofpbuf_put_zeros(b, sizeof *otm);
5430 otm->table_id = tm->table_id;
5431 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5432 tm->vacancy, ofp_version);
5436 case OFP15_VERSION: {
5437 struct ofp14_table_mod *otm;
5438 struct ofp14_table_mod_prop_eviction *ote;
5439 struct ofp14_table_mod_prop_vacancy *otv;
5441 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5442 otm = ofpbuf_put_zeros(b, sizeof *otm);
5443 otm->table_id = tm->table_id;
5444 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5445 tm->vacancy, ofp_version);
5447 if (tm->eviction_flags != UINT32_MAX) {
5448 ote = ofpbuf_put_zeros(b, sizeof *ote);
5449 ote->type = htons(OFPTMPT14_EVICTION);
5450 ote->length = htons(sizeof *ote);
5451 ote->flags = htonl(tm->eviction_flags);
5453 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5454 otv = ofpbuf_put_zeros(b, sizeof *otv);
5455 otv->type = htons(OFPTMPT14_VACANCY);
5456 otv->length = htons(sizeof *otv);
5457 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5458 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5469 /* ofputil_role_request */
5471 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5472 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5473 * OFPERR_* value. */
5475 ofputil_decode_role_message(const struct ofp_header *oh,
5476 struct ofputil_role_request *rr)
5481 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5482 raw = ofpraw_pull_assert(&b);
5484 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5485 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5486 const struct ofp12_role_request *orr = b.msg;
5488 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5489 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5490 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5491 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5492 return OFPERR_OFPRRFC_BAD_ROLE;
5495 rr->role = ntohl(orr->role);
5496 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5497 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5498 : orr->generation_id == OVS_BE64_MAX) {
5499 rr->have_generation_id = false;
5500 rr->generation_id = 0;
5502 rr->have_generation_id = true;
5503 rr->generation_id = ntohll(orr->generation_id);
5505 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5506 raw == OFPRAW_NXT_ROLE_REPLY) {
5507 const struct nx_role_request *nrr = b.msg;
5509 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5510 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5511 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5513 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5514 nrr->role != htonl(NX_ROLE_MASTER) &&
5515 nrr->role != htonl(NX_ROLE_SLAVE)) {
5516 return OFPERR_OFPRRFC_BAD_ROLE;
5519 rr->role = ntohl(nrr->role) + 1;
5520 rr->have_generation_id = false;
5521 rr->generation_id = 0;
5529 /* Returns an encoded form of a role reply suitable for the "request" in a
5530 * buffer owned by the caller. */
5532 ofputil_encode_role_reply(const struct ofp_header *request,
5533 const struct ofputil_role_request *rr)
5538 raw = ofpraw_decode_assert(request);
5539 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5540 struct ofp12_role_request *orr;
5542 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5543 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5545 orr->role = htonl(rr->role);
5546 orr->generation_id = htonll(rr->have_generation_id
5549 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5550 struct nx_role_request *nrr;
5552 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5553 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5554 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5556 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5557 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5558 nrr->role = htonl(rr->role - 1);
5566 /* Encodes "role status" message 'status' for sending in the given
5567 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5568 * otherwise a null pointer. */
5570 ofputil_encode_role_status(const struct ofputil_role_status *status,
5571 enum ofputil_protocol protocol)
5573 enum ofp_version version;
5575 version = ofputil_protocol_to_ofp_version(protocol);
5576 if (version >= OFP14_VERSION) {
5577 struct ofp14_role_status *rstatus;
5580 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5582 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5583 rstatus->role = htonl(status->role);
5584 rstatus->reason = status->reason;
5585 rstatus->generation_id = htonll(status->generation_id);
5594 ofputil_decode_role_status(const struct ofp_header *oh,
5595 struct ofputil_role_status *rs)
5599 const struct ofp14_role_status *r;
5601 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5602 raw = ofpraw_pull_assert(&b);
5603 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5606 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5607 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5608 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5609 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5610 return OFPERR_OFPRRFC_BAD_ROLE;
5613 rs->role = ntohl(r->role);
5614 rs->generation_id = ntohll(r->generation_id);
5615 rs->reason = r->reason;
5620 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5621 * 'protocol' must be for OpenFlow 1.4 or later. */
5623 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5624 enum ofputil_protocol protocol)
5626 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5627 struct ofpbuf *inner;
5629 switch (rf->reason) {
5630 case OFPRFR_GROUP_MOD:
5631 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5634 case OFPRFR_METER_MOD:
5635 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5638 case OFPRFR_N_REASONS:
5643 struct ofp_header *inner_oh = inner->data;
5644 inner_oh->xid = rf->xid;
5645 inner_oh->length = htons(inner->size);
5647 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5648 ofp_version, htonl(0),
5650 ofpbuf_put(outer, inner->data, inner->size);
5651 ofpbuf_delete(inner);
5656 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5657 * form into '*rf' and returns 0, and the caller is later responsible for
5658 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5659 * failure, returns an ofperr and '*rf' is indeterminate. */
5661 ofputil_decode_requestforward(const struct ofp_header *outer,
5662 struct ofputil_requestforward *rf)
5667 ofpbuf_use_const(&b, outer, ntohs(outer->length));
5669 /* Skip past outer message. */
5670 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5671 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5673 /* Validate inner message. */
5674 if (b.size < sizeof(struct ofp_header)) {
5675 return OFPERR_OFPBFC_MSG_BAD_LEN;
5677 const struct ofp_header *inner = b.data;
5678 unsigned int inner_len = ntohs(inner->length);
5679 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5680 return OFPERR_OFPBFC_MSG_BAD_LEN;
5682 if (inner->version != outer->version) {
5683 return OFPERR_OFPBRC_BAD_VERSION;
5686 /* Parse inner message. */
5688 error = ofptype_decode(&type, inner);
5693 rf->xid = inner->xid;
5694 if (type == OFPTYPE_GROUP_MOD) {
5695 rf->reason = OFPRFR_GROUP_MOD;
5696 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5697 error = ofputil_decode_group_mod(inner, rf->group_mod);
5699 free(rf->group_mod);
5702 } else if (type == OFPTYPE_METER_MOD) {
5703 rf->reason = OFPRFR_METER_MOD;
5704 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5705 ofpbuf_init(&rf->bands, 64);
5706 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5708 free(rf->meter_mod);
5709 ofpbuf_uninit(&rf->bands);
5713 return OFPERR_OFPBFC_MSG_UNSUP;
5719 /* Frees the content of 'rf', which should have been initialized through a
5720 * successful call to ofputil_decode_requestforward(). */
5722 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5728 switch (rf->reason) {
5729 case OFPRFR_GROUP_MOD:
5730 ofputil_uninit_group_mod(rf->group_mod);
5731 free(rf->group_mod);
5734 case OFPRFR_METER_MOD:
5735 ofpbuf_uninit(&rf->bands);
5736 free(rf->meter_mod);
5739 case OFPRFR_N_REASONS:
5746 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5747 * matched and a field that must be wildcarded. This function returns a bitmap
5748 * that contains both kinds of fields. */
5749 static struct mf_bitmap
5750 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5752 struct mf_bitmap wc = features->match;
5753 bitmap_not(wc.bm, MFF_N_IDS);
5754 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5758 struct ofp10_wc_map {
5759 enum ofp10_flow_wildcards wc10;
5760 enum mf_field_id mf;
5763 static const struct ofp10_wc_map ofp10_wc_map[] = {
5764 { OFPFW10_IN_PORT, MFF_IN_PORT },
5765 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5766 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5767 { OFPFW10_DL_DST, MFF_ETH_DST},
5768 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5769 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5770 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5771 { OFPFW10_TP_DST, MFF_TCP_DST },
5772 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5773 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5774 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5775 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5779 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5781 const struct ofp10_wc_map *p;
5784 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5785 if (bitmap_is_set(fields->bm, p->mf)) {
5792 static struct mf_bitmap
5793 mf_bitmap_from_of10(ovs_be32 wc10_)
5795 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5796 const struct ofp10_wc_map *p;
5797 uint32_t wc10 = ntohl(wc10_);
5799 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5800 if (wc10 & p->wc10) {
5801 bitmap_set1(fields.bm, p->mf);
5808 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5809 const struct ofputil_table_features *features,
5812 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5813 struct ofp10_table_stats *out;
5815 out = ofpbuf_put_zeros(buf, sizeof *out);
5816 out->table_id = features->table_id;
5817 ovs_strlcpy(out->name, features->name, sizeof out->name);
5818 out->wildcards = mf_bitmap_to_of10(&wc);
5819 out->max_entries = htonl(features->max_entries);
5820 out->active_count = htonl(stats->active_count);
5821 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5822 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5825 struct ofp11_wc_map {
5826 enum ofp11_flow_match_fields wc11;
5827 enum mf_field_id mf;
5830 static const struct ofp11_wc_map ofp11_wc_map[] = {
5831 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5832 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5833 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5834 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5835 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5836 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5837 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5838 { OFPFMF11_TP_DST, MFF_TCP_DST },
5839 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5840 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5841 /* I don't know what OFPFMF11_TYPE means. */
5842 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5843 { OFPFMF11_DL_DST, MFF_ETH_DST },
5844 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5845 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5846 { OFPFMF11_METADATA, MFF_METADATA },
5850 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5852 const struct ofp11_wc_map *p;
5855 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5856 if (bitmap_is_set(fields->bm, p->mf)) {
5863 static struct mf_bitmap
5864 mf_bitmap_from_of11(ovs_be32 wc11_)
5866 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5867 const struct ofp11_wc_map *p;
5868 uint32_t wc11 = ntohl(wc11_);
5870 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5871 if (wc11 & p->wc11) {
5872 bitmap_set1(fields.bm, p->mf);
5879 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5880 const struct ofputil_table_features *features,
5883 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5884 struct ofp11_table_stats *out;
5886 out = ofpbuf_put_zeros(buf, sizeof *out);
5887 out->table_id = features->table_id;
5888 ovs_strlcpy(out->name, features->name, sizeof out->name);
5889 out->wildcards = mf_bitmap_to_of11(&wc);
5890 out->match = mf_bitmap_to_of11(&features->match);
5891 out->instructions = ovsinst_bitmap_to_openflow(
5892 features->nonmiss.instructions, OFP11_VERSION);
5893 out->write_actions = ofpact_bitmap_to_openflow(
5894 features->nonmiss.write.ofpacts, OFP11_VERSION);
5895 out->apply_actions = ofpact_bitmap_to_openflow(
5896 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5897 out->config = htonl(features->miss_config);
5898 out->max_entries = htonl(features->max_entries);
5899 out->active_count = htonl(stats->active_count);
5900 out->lookup_count = htonll(stats->lookup_count);
5901 out->matched_count = htonll(stats->matched_count);
5905 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5906 const struct ofputil_table_features *features,
5909 struct ofp12_table_stats *out;
5911 out = ofpbuf_put_zeros(buf, sizeof *out);
5912 out->table_id = features->table_id;
5913 ovs_strlcpy(out->name, features->name, sizeof out->name);
5914 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5915 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5917 out->write_actions = ofpact_bitmap_to_openflow(
5918 features->nonmiss.write.ofpacts, OFP12_VERSION);
5919 out->apply_actions = ofpact_bitmap_to_openflow(
5920 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5921 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5922 &features->nonmiss.write.set_fields, OFP12_VERSION);
5923 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5924 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5925 out->metadata_match = features->metadata_match;
5926 out->metadata_write = features->metadata_write;
5927 out->instructions = ovsinst_bitmap_to_openflow(
5928 features->nonmiss.instructions, OFP12_VERSION);
5929 out->config = ofputil_encode_table_config(features->miss_config,
5930 OFPUTIL_TABLE_EVICTION_DEFAULT,
5931 OFPUTIL_TABLE_VACANCY_DEFAULT,
5933 out->max_entries = htonl(features->max_entries);
5934 out->active_count = htonl(stats->active_count);
5935 out->lookup_count = htonll(stats->lookup_count);
5936 out->matched_count = htonll(stats->matched_count);
5940 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5943 struct ofp13_table_stats *out;
5945 out = ofpbuf_put_zeros(buf, sizeof *out);
5946 out->table_id = stats->table_id;
5947 out->active_count = htonl(stats->active_count);
5948 out->lookup_count = htonll(stats->lookup_count);
5949 out->matched_count = htonll(stats->matched_count);
5953 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5955 return ofpraw_alloc_stats_reply(request, 0);
5959 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5960 const struct ofputil_table_stats *stats,
5961 const struct ofputil_table_features *features)
5963 struct ofp_header *oh = reply->header;
5965 ovs_assert(stats->table_id == features->table_id);
5967 switch ((enum ofp_version) oh->version) {
5969 ofputil_put_ofp10_table_stats(stats, features, reply);
5973 ofputil_put_ofp11_table_stats(stats, features, reply);
5977 ofputil_put_ofp12_table_stats(stats, features, reply);
5983 ofputil_put_ofp13_table_stats(stats, reply);
5992 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5993 struct ofputil_table_stats *stats,
5994 struct ofputil_table_features *features)
5996 struct ofp10_table_stats *ots;
5998 ots = ofpbuf_try_pull(msg, sizeof *ots);
6000 return OFPERR_OFPBRC_BAD_LEN;
6003 features->table_id = ots->table_id;
6004 ovs_strlcpy(features->name, ots->name, sizeof features->name);
6005 features->max_entries = ntohl(ots->max_entries);
6006 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
6008 stats->table_id = ots->table_id;
6009 stats->active_count = ntohl(ots->active_count);
6010 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
6011 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
6017 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
6018 struct ofputil_table_stats *stats,
6019 struct ofputil_table_features *features)
6021 struct ofp11_table_stats *ots;
6023 ots = ofpbuf_try_pull(msg, sizeof *ots);
6025 return OFPERR_OFPBRC_BAD_LEN;
6028 features->table_id = ots->table_id;
6029 ovs_strlcpy(features->name, ots->name, sizeof features->name);
6030 features->max_entries = ntohl(ots->max_entries);
6031 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
6032 ots->instructions, OFP11_VERSION);
6033 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
6034 ots->write_actions, OFP11_VERSION);
6035 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
6036 ots->write_actions, OFP11_VERSION);
6037 features->miss = features->nonmiss;
6038 features->miss_config = ofputil_decode_table_miss(ots->config,
6040 features->match = mf_bitmap_from_of11(ots->match);
6041 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
6042 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
6044 stats->table_id = ots->table_id;
6045 stats->active_count = ntohl(ots->active_count);
6046 stats->lookup_count = ntohll(ots->lookup_count);
6047 stats->matched_count = ntohll(ots->matched_count);
6053 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
6054 struct ofputil_table_stats *stats,
6055 struct ofputil_table_features *features)
6057 struct ofp12_table_stats *ots;
6059 ots = ofpbuf_try_pull(msg, sizeof *ots);
6061 return OFPERR_OFPBRC_BAD_LEN;
6064 features->table_id = ots->table_id;
6065 ovs_strlcpy(features->name, ots->name, sizeof features->name);
6066 features->metadata_match = ots->metadata_match;
6067 features->metadata_write = ots->metadata_write;
6068 features->miss_config = ofputil_decode_table_miss(ots->config,
6070 features->max_entries = ntohl(ots->max_entries);
6072 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
6073 ots->instructions, OFP12_VERSION);
6074 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
6075 ots->write_actions, OFP12_VERSION);
6076 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
6077 ots->apply_actions, OFP12_VERSION);
6078 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
6079 ots->write_setfields, OFP12_VERSION);
6080 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
6081 ots->apply_setfields, OFP12_VERSION);
6082 features->miss = features->nonmiss;
6084 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
6085 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
6087 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
6089 stats->table_id = ots->table_id;
6090 stats->active_count = ntohl(ots->active_count);
6091 stats->lookup_count = ntohll(ots->lookup_count);
6092 stats->matched_count = ntohll(ots->matched_count);
6098 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
6099 struct ofputil_table_stats *stats,
6100 struct ofputil_table_features *features)
6102 struct ofp13_table_stats *ots;
6104 ots = ofpbuf_try_pull(msg, sizeof *ots);
6106 return OFPERR_OFPBRC_BAD_LEN;
6109 features->table_id = ots->table_id;
6111 stats->table_id = ots->table_id;
6112 stats->active_count = ntohl(ots->active_count);
6113 stats->lookup_count = ntohll(ots->lookup_count);
6114 stats->matched_count = ntohll(ots->matched_count);
6120 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
6121 struct ofputil_table_stats *stats,
6122 struct ofputil_table_features *features)
6124 const struct ofp_header *oh;
6127 ofpraw_pull_assert(msg);
6135 memset(stats, 0, sizeof *stats);
6136 memset(features, 0, sizeof *features);
6137 features->supports_eviction = -1;
6138 features->supports_vacancy_events = -1;
6140 switch ((enum ofp_version) oh->version) {
6142 return ofputil_decode_ofp10_table_stats(msg, stats, features);
6145 return ofputil_decode_ofp11_table_stats(msg, stats, features);
6148 return ofputil_decode_ofp12_table_stats(msg, stats, features);
6153 return ofputil_decode_ofp13_table_stats(msg, stats, features);
6160 /* ofputil_flow_monitor_request */
6162 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
6163 * ofputil_flow_monitor_request in 'rq'.
6165 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6166 * message. Calling this function multiple times for a single 'msg' iterates
6167 * through the requests. The caller must initially leave 'msg''s layer
6168 * pointers null and not modify them between calls.
6170 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6171 * otherwise an OFPERR_* value. */
6173 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6176 struct nx_flow_monitor_request *nfmr;
6180 ofpraw_pull_assert(msg);
6187 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6189 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6190 "leftover bytes at end", msg->size);
6191 return OFPERR_OFPBRC_BAD_LEN;
6194 flags = ntohs(nfmr->flags);
6195 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6196 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6197 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6198 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6200 return OFPERR_OFPMOFC_BAD_FLAGS;
6203 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6204 return OFPERR_NXBRC_MUST_BE_ZERO;
6207 rq->id = ntohl(nfmr->id);
6209 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6210 rq->table_id = nfmr->table_id;
6212 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6216 ofputil_append_flow_monitor_request(
6217 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6219 struct nx_flow_monitor_request *nfmr;
6224 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6227 start_ofs = msg->size;
6228 ofpbuf_put_zeros(msg, sizeof *nfmr);
6229 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6231 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6232 nfmr->id = htonl(rq->id);
6233 nfmr->flags = htons(rq->flags);
6234 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6235 nfmr->match_len = htons(match_len);
6236 nfmr->table_id = rq->table_id;
6239 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6240 * into an abstract ofputil_flow_update in 'update'. The caller must have
6241 * initialized update->match to point to space allocated for a match.
6243 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6244 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6245 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6246 * will point into the 'ofpacts' buffer.
6248 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6249 * this function multiple times for a single 'msg' iterates through the
6250 * updates. The caller must initially leave 'msg''s layer pointers null and
6251 * not modify them between calls.
6253 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6254 * otherwise an OFPERR_* value. */
6256 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6257 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6259 struct nx_flow_update_header *nfuh;
6260 unsigned int length;
6261 struct ofp_header *oh;
6264 ofpraw_pull_assert(msg);
6267 ofpbuf_clear(ofpacts);
6272 if (msg->size < sizeof(struct nx_flow_update_header)) {
6279 update->event = ntohs(nfuh->event);
6280 length = ntohs(nfuh->length);
6281 if (length > msg->size || length % 8) {
6285 if (update->event == NXFME_ABBREV) {
6286 struct nx_flow_update_abbrev *nfua;
6288 if (length != sizeof *nfua) {
6292 nfua = ofpbuf_pull(msg, sizeof *nfua);
6293 update->xid = nfua->xid;
6295 } else if (update->event == NXFME_ADDED
6296 || update->event == NXFME_DELETED
6297 || update->event == NXFME_MODIFIED) {
6298 struct nx_flow_update_full *nfuf;
6299 unsigned int actions_len;
6300 unsigned int match_len;
6303 if (length < sizeof *nfuf) {
6307 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6308 match_len = ntohs(nfuf->match_len);
6309 if (sizeof *nfuf + match_len > length) {
6313 update->reason = ntohs(nfuf->reason);
6314 update->idle_timeout = ntohs(nfuf->idle_timeout);
6315 update->hard_timeout = ntohs(nfuf->hard_timeout);
6316 update->table_id = nfuf->table_id;
6317 update->cookie = nfuf->cookie;
6318 update->priority = ntohs(nfuf->priority);
6320 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6325 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6326 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6332 update->ofpacts = ofpacts->data;
6333 update->ofpacts_len = ofpacts->size;
6336 VLOG_WARN_RL(&bad_ofmsg_rl,
6337 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6338 ntohs(nfuh->event));
6339 return OFPERR_NXBRC_FM_BAD_EVENT;
6343 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6344 "leftover bytes at end", msg->size);
6345 return OFPERR_OFPBRC_BAD_LEN;
6349 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6351 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6353 return ntohl(cancel->id);
6357 ofputil_encode_flow_monitor_cancel(uint32_t id)
6359 struct nx_flow_monitor_cancel *nfmc;
6362 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6363 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6364 nfmc->id = htonl(id);
6369 ofputil_start_flow_update(struct ovs_list *replies)
6373 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6377 list_push_back(replies, &msg->list_node);
6381 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6382 struct ovs_list *replies)
6384 enum ofp_version version = ofpmp_version(replies);
6385 struct nx_flow_update_header *nfuh;
6389 msg = ofpbuf_from_list(list_back(replies));
6390 start_ofs = msg->size;
6392 if (update->event == NXFME_ABBREV) {
6393 struct nx_flow_update_abbrev *nfua;
6395 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6396 nfua->xid = update->xid;
6398 struct nx_flow_update_full *nfuf;
6401 ofpbuf_put_zeros(msg, sizeof *nfuf);
6402 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6403 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6405 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6406 nfuf->reason = htons(update->reason);
6407 nfuf->priority = htons(update->priority);
6408 nfuf->idle_timeout = htons(update->idle_timeout);
6409 nfuf->hard_timeout = htons(update->hard_timeout);
6410 nfuf->match_len = htons(match_len);
6411 nfuf->table_id = update->table_id;
6412 nfuf->cookie = update->cookie;
6415 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6416 nfuh->length = htons(msg->size - start_ofs);
6417 nfuh->event = htons(update->event);
6419 ofpmp_postappend(replies, start_ofs);
6423 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6424 enum ofputil_protocol protocol)
6426 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6430 size = po->ofpacts_len;
6431 if (po->buffer_id == UINT32_MAX) {
6432 size += po->packet_len;
6435 switch (ofp_version) {
6436 case OFP10_VERSION: {
6437 struct ofp10_packet_out *opo;
6440 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6441 ofpbuf_put_zeros(msg, sizeof *opo);
6442 actions_ofs = msg->size;
6443 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6447 opo->buffer_id = htonl(po->buffer_id);
6448 opo->in_port = htons(ofp_to_u16(po->in_port));
6449 opo->actions_len = htons(msg->size - actions_ofs);
6457 case OFP15_VERSION: {
6458 struct ofp11_packet_out *opo;
6461 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6462 ofpbuf_put_zeros(msg, sizeof *opo);
6463 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6466 opo->buffer_id = htonl(po->buffer_id);
6467 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6468 opo->actions_len = htons(len);
6476 if (po->buffer_id == UINT32_MAX) {
6477 ofpbuf_put(msg, po->packet, po->packet_len);
6480 ofpmsg_update_length(msg);
6485 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6487 make_echo_request(enum ofp_version ofp_version)
6489 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6493 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6494 * OFPT_ECHO_REQUEST message in 'rq'. */
6496 make_echo_reply(const struct ofp_header *rq)
6498 struct ofpbuf rq_buf;
6499 struct ofpbuf *reply;
6501 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6502 ofpraw_pull_assert(&rq_buf);
6504 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
6505 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6510 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6514 switch (ofp_version) {
6520 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6524 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6531 return ofpraw_alloc(type, ofp_version, 0);
6535 ofputil_frag_handling_to_string(enum ofputil_frag_handling frag)
6538 case OFPUTIL_FRAG_NORMAL: return "normal";
6539 case OFPUTIL_FRAG_DROP: return "drop";
6540 case OFPUTIL_FRAG_REASM: return "reassemble";
6541 case OFPUTIL_FRAG_NX_MATCH: return "nx-match";
6548 ofputil_frag_handling_from_string(const char *s,
6549 enum ofputil_frag_handling *frag)
6551 if (!strcasecmp(s, "normal")) {
6552 *frag = OFPUTIL_FRAG_NORMAL;
6553 } else if (!strcasecmp(s, "drop")) {
6554 *frag = OFPUTIL_FRAG_DROP;
6555 } else if (!strcasecmp(s, "reassemble")) {
6556 *frag = OFPUTIL_FRAG_REASM;
6557 } else if (!strcasecmp(s, "nx-match")) {
6558 *frag = OFPUTIL_FRAG_NX_MATCH;
6565 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6566 * port number and stores the latter in '*ofp10_port', for the purpose of
6567 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6568 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6570 * See the definition of OFP11_MAX for an explanation of the mapping. */
6572 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6574 uint32_t ofp11_port_h = ntohl(ofp11_port);
6576 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6577 *ofp10_port = u16_to_ofp(ofp11_port_h);
6579 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6580 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6583 *ofp10_port = OFPP_NONE;
6584 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6585 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6586 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6587 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6588 return OFPERR_OFPBAC_BAD_OUT_PORT;
6592 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6593 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6595 * See the definition of OFP11_MAX for an explanation of the mapping. */
6597 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6599 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6600 ? ofp_to_u16(ofp10_port)
6601 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6604 #define OFPUTIL_NAMED_PORTS \
6605 OFPUTIL_NAMED_PORT(IN_PORT) \
6606 OFPUTIL_NAMED_PORT(TABLE) \
6607 OFPUTIL_NAMED_PORT(NORMAL) \
6608 OFPUTIL_NAMED_PORT(FLOOD) \
6609 OFPUTIL_NAMED_PORT(ALL) \
6610 OFPUTIL_NAMED_PORT(CONTROLLER) \
6611 OFPUTIL_NAMED_PORT(LOCAL) \
6612 OFPUTIL_NAMED_PORT(ANY) \
6613 OFPUTIL_NAMED_PORT(UNSET)
6615 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6616 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6617 OFPUTIL_NAMED_PORTS \
6618 OFPUTIL_NAMED_PORT(NONE)
6620 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6621 * integer or, for reserved ports, the standard OpenFlow name for the port
6624 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6625 * or name. The caller should issue an error message in this case, because
6626 * this function usually does not. (This gives the caller an opportunity to
6627 * look up the port name another way, e.g. by contacting the switch and listing
6628 * the names of all its ports).
6630 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6631 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6632 * range as described in include/openflow/openflow-1.1.h. */
6634 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6636 unsigned int port32; /* int is at least 32 bits wide. */
6639 VLOG_WARN("Negative value %s is not a valid port number.", s);
6643 if (str_to_uint(s, 10, &port32)) {
6644 if (port32 < ofp_to_u16(OFPP_MAX)) {
6646 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6647 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6648 "be translated to %u when talking to an OF1.1 or "
6649 "later controller", port32, port32 + OFPP11_OFFSET);
6650 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6651 char name[OFP_MAX_PORT_NAME_LEN];
6653 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6654 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6655 "for compatibility with OpenFlow 1.1 and later",
6657 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6658 VLOG_WARN("port %u is outside the supported range 0 through "
6659 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6660 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6663 port32 -= OFPP11_OFFSET;
6666 *portp = u16_to_ofp(port32);
6673 static const struct pair pairs[] = {
6674 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6675 OFPUTIL_NAMED_PORTS_WITH_NONE
6676 #undef OFPUTIL_NAMED_PORT
6678 const struct pair *p;
6680 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6681 if (!strcasecmp(s, p->name)) {
6690 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6691 * Most ports' string representation is just the port number, but for special
6692 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6694 ofputil_format_port(ofp_port_t port, struct ds *s)
6696 char name[OFP_MAX_PORT_NAME_LEN];
6698 ofputil_port_to_string(port, name, sizeof name);
6699 ds_put_cstr(s, name);
6702 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6703 * representation of OpenFlow port number 'port'. Most ports are represented
6704 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6705 * by name, e.g. "LOCAL". */
6707 ofputil_port_to_string(ofp_port_t port,
6708 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6711 #define OFPUTIL_NAMED_PORT(NAME) \
6713 ovs_strlcpy(namebuf, #NAME, bufsize); \
6716 #undef OFPUTIL_NAMED_PORT
6719 snprintf(namebuf, bufsize, "%"PRIu16, port);
6724 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6725 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6726 * (either "ANY" or "ALL").
6728 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6731 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6733 if (!strcasecmp(s, "any")) {
6734 *group_idp = OFPG_ANY;
6735 } else if (!strcasecmp(s, "all")) {
6736 *group_idp = OFPG_ALL;
6737 } else if (!str_to_uint(s, 10, group_idp)) {
6738 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6739 "32-bit nonnegative integers or the keywords ANY or "
6747 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6748 * Most groups' string representation is just the number, but for special
6749 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6751 ofputil_format_group(uint32_t group_id, struct ds *s)
6753 char name[MAX_GROUP_NAME_LEN];
6755 ofputil_group_to_string(group_id, name, sizeof name);
6756 ds_put_cstr(s, name);
6760 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6761 * representation of OpenFlow group ID 'group_id'. Most group are represented
6762 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6763 * by name, e.g. "ALL". */
6765 ofputil_group_to_string(uint32_t group_id,
6766 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6770 ovs_strlcpy(namebuf, "ALL", bufsize);
6774 ovs_strlcpy(namebuf, "ANY", bufsize);
6778 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6783 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6784 * 'ofp_version', tries to pull the first element from the array. If
6785 * successful, initializes '*pp' with an abstract representation of the
6786 * port and returns 0. If no ports remain to be decoded, returns EOF.
6787 * On an error, returns a positive OFPERR_* value. */
6789 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6790 struct ofputil_phy_port *pp)
6792 memset(pp, 0, sizeof *pp);
6794 switch (ofp_version) {
6795 case OFP10_VERSION: {
6796 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6797 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6801 case OFP13_VERSION: {
6802 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6803 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6807 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6814 ofputil_normalize_match__(struct match *match, bool may_log)
6817 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6818 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6819 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6820 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6821 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6822 MAY_ARP_THA = 1 << 5, /* arp_tha */
6823 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6824 MAY_ND_TARGET = 1 << 7, /* nd_target */
6825 MAY_MPLS = 1 << 8, /* mpls label and tc */
6828 struct flow_wildcards wc;
6830 /* Figure out what fields may be matched. */
6831 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6832 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6833 if (match->flow.nw_proto == IPPROTO_TCP ||
6834 match->flow.nw_proto == IPPROTO_UDP ||
6835 match->flow.nw_proto == IPPROTO_SCTP ||
6836 match->flow.nw_proto == IPPROTO_ICMP) {
6837 may_match |= MAY_TP_ADDR;
6839 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6840 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6841 if (match->flow.nw_proto == IPPROTO_TCP ||
6842 match->flow.nw_proto == IPPROTO_UDP ||
6843 match->flow.nw_proto == IPPROTO_SCTP) {
6844 may_match |= MAY_TP_ADDR;
6845 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6846 may_match |= MAY_TP_ADDR;
6847 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6848 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6849 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6850 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6853 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6854 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6855 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6856 } else if (eth_type_mpls(match->flow.dl_type)) {
6857 may_match = MAY_MPLS;
6862 /* Clear the fields that may not be matched. */
6864 if (!(may_match & MAY_NW_ADDR)) {
6865 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6867 if (!(may_match & MAY_TP_ADDR)) {
6868 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6870 if (!(may_match & MAY_NW_PROTO)) {
6871 wc.masks.nw_proto = 0;
6873 if (!(may_match & MAY_IPVx)) {
6874 wc.masks.nw_tos = 0;
6875 wc.masks.nw_ttl = 0;
6877 if (!(may_match & MAY_ARP_SHA)) {
6878 WC_UNMASK_FIELD(&wc, arp_sha);
6880 if (!(may_match & MAY_ARP_THA)) {
6881 WC_UNMASK_FIELD(&wc, arp_tha);
6883 if (!(may_match & MAY_IPV6)) {
6884 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6885 wc.masks.ipv6_label = htonl(0);
6887 if (!(may_match & MAY_ND_TARGET)) {
6888 wc.masks.nd_target = in6addr_any;
6890 if (!(may_match & MAY_MPLS)) {
6891 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6894 /* Log any changes. */
6895 if (!flow_wildcards_equal(&wc, &match->wc)) {
6896 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6897 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6900 match_zero_wildcarded_fields(match);
6903 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6904 VLOG_INFO("normalization changed ofp_match, details:");
6905 VLOG_INFO(" pre: %s", pre);
6906 VLOG_INFO("post: %s", post);
6913 /* "Normalizes" the wildcards in 'match'. That means:
6915 * 1. If the type of level N is known, then only the valid fields for that
6916 * level may be specified. For example, ARP does not have a TOS field,
6917 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6918 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6919 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6922 * 2. If the type of level N is not known (or not understood by Open
6923 * vSwitch), then no fields at all for that level may be specified. For
6924 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6925 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6928 * If this function changes 'match', it logs a rate-limited informational
6931 ofputil_normalize_match(struct match *match)
6933 ofputil_normalize_match__(match, true);
6936 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6937 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6938 * sense for use on flows received from elsewhere (so that a bug in the program
6939 * that sent them can be reported and corrected). */
6941 ofputil_normalize_match_quiet(struct match *match)
6943 ofputil_normalize_match__(match, false);
6946 /* Parses a key or a key-value pair from '*stringp'.
6948 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6949 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6950 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6951 * are substrings of '*stringp' created by replacing some of its bytes by null
6952 * terminators. Returns true.
6954 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6955 * NULL and returns false. */
6957 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6959 char *pos, *key, *value;
6963 pos += strspn(pos, ", \t\r\n");
6965 *keyp = *valuep = NULL;
6970 key_len = strcspn(pos, ":=(, \t\r\n");
6971 if (key[key_len] == ':' || key[key_len] == '=') {
6972 /* The value can be separated by a colon. */
6975 value = key + key_len + 1;
6976 value_len = strcspn(value, ", \t\r\n");
6977 pos = value + value_len + (value[value_len] != '\0');
6978 value[value_len] = '\0';
6979 } else if (key[key_len] == '(') {
6980 /* The value can be surrounded by balanced parentheses. The outermost
6981 * set of parentheses is removed. */
6985 value = key + key_len + 1;
6986 for (value_len = 0; level > 0; value_len++) {
6987 switch (value[value_len]) {
7001 value[value_len - 1] = '\0';
7002 pos = value + value_len;
7004 /* There might be no value at all. */
7005 value = key + key_len; /* Will become the empty string below. */
7006 pos = key + key_len + (key[key_len] != '\0');
7008 key[key_len] = '\0';
7016 /* Encode a dump ports request for 'port', the encoded message
7017 * will be for OpenFlow version 'ofp_version'. Returns message
7018 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
7020 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
7022 struct ofpbuf *request;
7024 switch (ofp_version) {
7025 case OFP10_VERSION: {
7026 struct ofp10_port_stats_request *req;
7027 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
7028 req = ofpbuf_put_zeros(request, sizeof *req);
7029 req->port_no = htons(ofp_to_u16(port));
7036 case OFP15_VERSION: {
7037 struct ofp11_port_stats_request *req;
7038 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
7039 req = ofpbuf_put_zeros(request, sizeof *req);
7040 req->port_no = ofputil_port_to_ofp11(port);
7051 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
7052 struct ofp10_port_stats *ps10)
7054 ps10->port_no = htons(ofp_to_u16(ops->port_no));
7055 memset(ps10->pad, 0, sizeof ps10->pad);
7056 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
7057 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
7058 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
7059 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
7060 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
7061 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
7062 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
7063 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
7064 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
7065 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
7066 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
7067 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
7071 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
7072 struct ofp11_port_stats *ps11)
7074 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
7075 memset(ps11->pad, 0, sizeof ps11->pad);
7076 ps11->rx_packets = htonll(ops->stats.rx_packets);
7077 ps11->tx_packets = htonll(ops->stats.tx_packets);
7078 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
7079 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
7080 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
7081 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
7082 ps11->rx_errors = htonll(ops->stats.rx_errors);
7083 ps11->tx_errors = htonll(ops->stats.tx_errors);
7084 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7085 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
7086 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7087 ps11->collisions = htonll(ops->stats.collisions);
7091 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
7092 struct ofp13_port_stats *ps13)
7094 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
7095 ps13->duration_sec = htonl(ops->duration_sec);
7096 ps13->duration_nsec = htonl(ops->duration_nsec);
7100 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
7101 struct ovs_list *replies)
7103 struct ofp14_port_stats_prop_ethernet *eth;
7104 struct ofp14_port_stats *ps14;
7105 struct ofpbuf *reply;
7107 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
7109 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
7110 ps14->length = htons(sizeof *ps14 + sizeof *eth);
7111 memset(ps14->pad, 0, sizeof ps14->pad);
7112 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
7113 ps14->duration_sec = htonl(ops->duration_sec);
7114 ps14->duration_nsec = htonl(ops->duration_nsec);
7115 ps14->rx_packets = htonll(ops->stats.rx_packets);
7116 ps14->tx_packets = htonll(ops->stats.tx_packets);
7117 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
7118 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
7119 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
7120 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
7121 ps14->rx_errors = htonll(ops->stats.rx_errors);
7122 ps14->tx_errors = htonll(ops->stats.tx_errors);
7124 eth = ofpbuf_put_uninit(reply, sizeof *eth);
7125 eth->type = htons(OFPPSPT14_ETHERNET);
7126 eth->length = htons(sizeof *eth);
7127 memset(eth->pad, 0, sizeof eth->pad);
7128 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7129 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
7130 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7131 eth->collisions = htonll(ops->stats.collisions);
7134 /* Encode a ports stat for 'ops' and append it to 'replies'. */
7136 ofputil_append_port_stat(struct ovs_list *replies,
7137 const struct ofputil_port_stats *ops)
7139 switch (ofpmp_version(replies)) {
7140 case OFP13_VERSION: {
7141 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7142 ofputil_port_stats_to_ofp13(ops, reply);
7146 case OFP11_VERSION: {
7147 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7148 ofputil_port_stats_to_ofp11(ops, reply);
7152 case OFP10_VERSION: {
7153 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7154 ofputil_port_stats_to_ofp10(ops, reply);
7160 ofputil_append_ofp14_port_stats(ops, replies);
7169 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7170 const struct ofp10_port_stats *ps10)
7172 memset(ops, 0, sizeof *ops);
7174 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7175 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7176 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7177 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7178 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7179 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7180 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7181 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7182 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7183 ops->stats.rx_frame_errors =
7184 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7185 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7186 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7187 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7188 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7194 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7195 const struct ofp11_port_stats *ps11)
7199 memset(ops, 0, sizeof *ops);
7200 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7205 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7206 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7207 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7208 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7209 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7210 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7211 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7212 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7213 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7214 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7215 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7216 ops->stats.collisions = ntohll(ps11->collisions);
7217 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7223 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7224 const struct ofp13_port_stats *ps13)
7226 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7228 ops->duration_sec = ntohl(ps13->duration_sec);
7229 ops->duration_nsec = ntohl(ps13->duration_nsec);
7235 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7236 struct ofputil_port_stats *ops)
7238 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7240 if (payload->size != sizeof *eth) {
7241 return OFPERR_OFPBPC_BAD_LEN;
7244 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7245 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7246 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7247 ops->stats.collisions = ntohll(eth->collisions);
7253 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7256 const struct ofp14_port_stats *ps14;
7257 struct ofpbuf properties;
7261 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7263 return OFPERR_OFPBRC_BAD_LEN;
7266 len = ntohs(ps14->length);
7267 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7268 return OFPERR_OFPBRC_BAD_LEN;
7270 len -= sizeof *ps14;
7271 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
7273 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7278 ops->duration_sec = ntohl(ps14->duration_sec);
7279 ops->duration_nsec = ntohl(ps14->duration_nsec);
7280 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7281 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7282 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7283 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7284 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7285 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7286 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7287 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7288 ops->stats.rx_frame_errors = UINT64_MAX;
7289 ops->stats.rx_over_errors = UINT64_MAX;
7290 ops->stats.rx_crc_errors = UINT64_MAX;
7291 ops->stats.collisions = UINT64_MAX;
7293 while (properties.size > 0) {
7294 struct ofpbuf payload;
7298 error = ofputil_pull_property(&properties, &payload, &type);
7304 case OFPPSPT14_ETHERNET:
7305 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7309 log_property(true, "unknown port stats property %"PRIu16, type);
7322 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7325 ofputil_count_port_stats(const struct ofp_header *oh)
7327 struct ofputil_port_stats ps;
7331 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7332 ofpraw_pull_assert(&b);
7333 while (!ofputil_decode_port_stats(&ps, &b)) {
7339 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7340 * ofputil_port_stats in 'ps'.
7342 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7343 * message. Calling this function multiple times for a single 'msg' iterates
7344 * through the replies. The caller must initially leave 'msg''s layer pointers
7345 * null and not modify them between calls.
7347 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7348 * otherwise a positive errno value. */
7350 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7355 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7356 : ofpraw_pull(&raw, msg));
7363 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7364 return ofputil_pull_ofp14_port_stats(ps, msg);
7365 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7366 const struct ofp13_port_stats *ps13;
7368 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7372 return ofputil_port_stats_from_ofp13(ps, ps13);
7373 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7374 const struct ofp11_port_stats *ps11;
7376 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7380 return ofputil_port_stats_from_ofp11(ps, ps11);
7381 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7382 const struct ofp10_port_stats *ps10;
7384 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7388 return ofputil_port_stats_from_ofp10(ps, ps10);
7394 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7395 "bytes at end", msg->size);
7396 return OFPERR_OFPBRC_BAD_LEN;
7399 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7400 * port number and stores the latter in '*ofp10_port'.
7401 * Returns 0 if successful, otherwise an OFPERR_* number. */
7403 ofputil_decode_port_stats_request(const struct ofp_header *request,
7404 ofp_port_t *ofp10_port)
7406 switch ((enum ofp_version)request->version) {
7411 case OFP11_VERSION: {
7412 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7413 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7416 case OFP10_VERSION: {
7417 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7418 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7427 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7429 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7431 struct ofputil_bucket *bucket;
7433 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7434 free(bucket->ofpacts);
7439 /* Clones 'bucket' and its ofpacts data */
7440 static struct ofputil_bucket *
7441 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7443 struct ofputil_bucket *new;
7445 new = xmemdup(bucket, sizeof *bucket);
7446 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7451 /* Clones each of the buckets in the list 'src' appending them
7452 * in turn to 'dest' which should be an initialised list.
7453 * An exception is that if the pointer value of a bucket in 'src'
7454 * matches 'skip' then it is not cloned or appended to 'dest'.
7455 * This allows all of 'src' or 'all of 'src' except 'skip' to
7456 * be cloned and appended to 'dest'. */
7458 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7459 const struct ofputil_bucket *skip)
7461 struct ofputil_bucket *bucket;
7463 LIST_FOR_EACH (bucket, list_node, src) {
7464 struct ofputil_bucket *new_bucket;
7466 if (bucket == skip) {
7470 new_bucket = ofputil_bucket_clone_data(bucket);
7471 list_push_back(dest, &new_bucket->list_node);
7475 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7476 * Returns the first bucket found or NULL if no buckets are found. */
7477 struct ofputil_bucket *
7478 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7480 struct ofputil_bucket *bucket;
7482 if (bucket_id > OFPG15_BUCKET_MAX) {
7486 LIST_FOR_EACH (bucket, list_node, buckets) {
7487 if (bucket->bucket_id == bucket_id) {
7495 /* Returns true if more than one bucket in the list 'buckets'
7496 * have the same bucket id. Returns false otherwise. */
7498 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7500 struct ofputil_bucket *i, *j;
7502 LIST_FOR_EACH (i, list_node, buckets) {
7503 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7507 if (i->bucket_id == j->bucket_id) {
7516 /* Returns the bucket at the front of the list 'buckets'.
7517 * Undefined if 'buckets is empty. */
7518 struct ofputil_bucket *
7519 ofputil_bucket_list_front(const struct ovs_list *buckets)
7521 static struct ofputil_bucket *bucket;
7523 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7528 /* Returns the bucket at the back of the list 'buckets'.
7529 * Undefined if 'buckets is empty. */
7530 struct ofputil_bucket *
7531 ofputil_bucket_list_back(const struct ovs_list *buckets)
7533 static struct ofputil_bucket *bucket;
7535 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7540 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7541 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7544 * Group statistics include packet and byte counts for each group. */
7546 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7549 struct ofpbuf *request;
7551 switch (ofp_version) {
7553 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7554 "(\'-O OpenFlow11\')");
7559 case OFP15_VERSION: {
7560 struct ofp11_group_stats_request *req;
7561 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7562 req = ofpbuf_put_zeros(request, sizeof *req);
7563 req->group_id = htonl(group_id);
7574 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7576 ofputil_bucket_list_destroy(&gd->buckets);
7577 free(&gd->props.fields);
7580 /* Decodes the OpenFlow group description request in 'oh', returning the group
7581 * whose description is requested, or OFPG_ALL if stats for all groups was
7584 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7586 struct ofpbuf request;
7589 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7590 raw = ofpraw_pull_assert(&request);
7591 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7593 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7594 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7595 return ntohl(*group_id);
7601 /* Returns an OpenFlow group description request for OpenFlow version
7602 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7603 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7606 * Group descriptions include the bucket and action configuration for each
7609 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7612 struct ofpbuf *request;
7614 switch (ofp_version) {
7616 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7617 "(\'-O OpenFlow11\')");
7622 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7625 case OFP15_VERSION:{
7626 struct ofp15_group_desc_request *req;
7627 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7629 req = ofpbuf_put_zeros(request, sizeof *req);
7630 req->group_id = htonl(group_id);
7641 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7642 struct ofp11_bucket_counter bucket_cnts[])
7646 for (i = 0; i < gs->n_buckets; i++) {
7647 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7648 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7653 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7654 struct ofp11_group_stats *gs11, size_t length,
7655 struct ofp11_bucket_counter bucket_cnts[])
7657 memset(gs11, 0, sizeof *gs11);
7658 gs11->length = htons(length);
7659 gs11->group_id = htonl(gs->group_id);
7660 gs11->ref_count = htonl(gs->ref_count);
7661 gs11->packet_count = htonll(gs->packet_count);
7662 gs11->byte_count = htonll(gs->byte_count);
7663 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7667 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7668 struct ofp13_group_stats *gs13, size_t length,
7669 struct ofp11_bucket_counter bucket_cnts[])
7671 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7672 gs13->duration_sec = htonl(gs->duration_sec);
7673 gs13->duration_nsec = htonl(gs->duration_nsec);
7677 /* Encodes 'gs' properly for the format of the list of group statistics
7678 * replies already begun in 'replies' and appends it to the list. 'replies'
7679 * must have originally been initialized with ofpmp_init(). */
7681 ofputil_append_group_stats(struct ovs_list *replies,
7682 const struct ofputil_group_stats *gs)
7684 size_t bucket_counter_size;
7685 struct ofp11_bucket_counter *bucket_counters;
7688 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7690 switch (ofpmp_version(replies)) {
7692 case OFP12_VERSION:{
7693 struct ofp11_group_stats *gs11;
7695 length = sizeof *gs11 + bucket_counter_size;
7696 gs11 = ofpmp_append(replies, length);
7697 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7698 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7704 case OFP15_VERSION: {
7705 struct ofp13_group_stats *gs13;
7707 length = sizeof *gs13 + bucket_counter_size;
7708 gs13 = ofpmp_append(replies, length);
7709 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7710 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7719 /* Returns an OpenFlow group features request for OpenFlow version
7722 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7724 struct ofpbuf *request = NULL;
7726 switch (ofp_version) {
7729 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7730 "(\'-O OpenFlow12\')");
7735 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7745 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7746 * group features request 'request'. */
7748 ofputil_encode_group_features_reply(
7749 const struct ofputil_group_features *features,
7750 const struct ofp_header *request)
7752 struct ofp12_group_features_stats *ogf;
7753 struct ofpbuf *reply;
7756 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7757 request->version, request->xid, 0);
7758 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7759 ogf->types = htonl(features->types);
7760 ogf->capabilities = htonl(features->capabilities);
7761 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7762 ogf->max_groups[i] = htonl(features->max_groups[i]);
7763 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7770 /* Decodes group features reply 'oh' into 'features'. */
7772 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7773 struct ofputil_group_features *features)
7775 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7778 features->types = ntohl(ogf->types);
7779 features->capabilities = ntohl(ogf->capabilities);
7780 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7781 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7782 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7783 ogf->actions[i], oh->version);
7787 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7788 * group ID and stores the latter in '*group_id'.
7789 * Returns 0 if successful, otherwise an OFPERR_* number. */
7791 ofputil_decode_group_stats_request(const struct ofp_header *request,
7794 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7795 *group_id = ntohl(gsr11->group_id);
7799 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7800 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7801 * caller to eventually free.
7803 * Multiple group stats replies can be packed into a single OpenFlow message.
7804 * Calling this function multiple times for a single 'msg' iterates through the
7805 * replies. The caller must initially leave 'msg''s layer pointers null and
7806 * not modify them between calls.
7808 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7809 * otherwise a positive errno value. */
7811 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7812 struct ofputil_group_stats *gs)
7814 struct ofp11_bucket_counter *obc;
7815 struct ofp11_group_stats *ogs11;
7822 gs->bucket_stats = NULL;
7823 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7824 : ofpraw_pull(&raw, msg));
7833 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7834 base_len = sizeof *ogs11;
7835 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7836 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7837 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7838 struct ofp13_group_stats *ogs13;
7840 base_len = sizeof *ogs13;
7841 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7844 gs->duration_sec = ntohl(ogs13->duration_sec);
7845 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7854 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7855 ofpraw_get_name(raw), msg->size);
7856 return OFPERR_OFPBRC_BAD_LEN;
7858 length = ntohs(ogs11->length);
7859 if (length < sizeof base_len) {
7860 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7861 ofpraw_get_name(raw), length);
7862 return OFPERR_OFPBRC_BAD_LEN;
7865 gs->group_id = ntohl(ogs11->group_id);
7866 gs->ref_count = ntohl(ogs11->ref_count);
7867 gs->packet_count = ntohll(ogs11->packet_count);
7868 gs->byte_count = ntohll(ogs11->byte_count);
7870 gs->n_buckets = (length - base_len) / sizeof *obc;
7871 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7873 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7874 ofpraw_get_name(raw), msg->size);
7875 return OFPERR_OFPBRC_BAD_LEN;
7878 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7879 for (i = 0; i < gs->n_buckets; i++) {
7880 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7881 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7888 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7889 struct ofpbuf *openflow, enum ofp_version ofp_version)
7891 struct ofp11_bucket *ob;
7894 start = openflow->size;
7895 ofpbuf_put_zeros(openflow, sizeof *ob);
7896 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7897 openflow, ofp_version);
7898 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7899 ob->len = htons(openflow->size - start);
7900 ob->weight = htons(bucket->weight);
7901 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7902 ob->watch_group = htonl(bucket->watch_group);
7906 ofputil_put_ofp15_group_bucket_prop_weight(ovs_be16 weight,
7907 struct ofpbuf *openflow)
7910 struct ofp15_group_bucket_prop_weight *prop;
7912 start_ofs = start_property(openflow, OFPGBPT15_WEIGHT);
7913 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7914 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7915 prop->weight = weight;
7916 end_property(openflow, start_ofs);
7920 ofputil_put_ofp15_group_bucket_prop_watch(ovs_be32 watch, uint16_t type,
7921 struct ofpbuf *openflow)
7924 struct ofp15_group_bucket_prop_watch *prop;
7926 start_ofs = start_property(openflow, type);
7927 ofpbuf_put_zeros(openflow, sizeof *prop - sizeof(struct ofp_prop_header));
7928 prop = ofpbuf_at_assert(openflow, start_ofs, sizeof *prop);
7929 prop->watch = watch;
7930 end_property(openflow, start_ofs);
7934 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7935 uint32_t bucket_id, enum ofp11_group_type group_type,
7936 struct ofpbuf *openflow, enum ofp_version ofp_version)
7938 struct ofp15_bucket *ob;
7939 size_t start, actions_start, actions_len;
7941 start = openflow->size;
7942 ofpbuf_put_zeros(openflow, sizeof *ob);
7944 actions_start = openflow->size;
7945 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7946 openflow, ofp_version);
7947 actions_len = openflow->size - actions_start;
7949 if (group_type == OFPGT11_SELECT) {
7950 ofputil_put_ofp15_group_bucket_prop_weight(htons(bucket->weight),
7953 if (bucket->watch_port != OFPP_ANY) {
7954 ovs_be32 port = ofputil_port_to_ofp11(bucket->watch_port);
7955 ofputil_put_ofp15_group_bucket_prop_watch(port,
7956 OFPGBPT15_WATCH_PORT,
7959 if (bucket->watch_group != OFPG_ANY) {
7960 ovs_be32 group = htonl(bucket->watch_group);
7961 ofputil_put_ofp15_group_bucket_prop_watch(group,
7962 OFPGBPT15_WATCH_GROUP,
7966 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7967 ob->len = htons(openflow->size - start);
7968 ob->action_array_len = htons(actions_len);
7969 ob->bucket_id = htonl(bucket_id);
7973 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7974 const struct ofputil_group_props *gp,
7975 struct ofpbuf *openflow)
7977 struct ntr_group_prop_selection_method *prop;
7980 start = openflow->size;
7981 ofpbuf_put_zeros(openflow, sizeof *prop);
7982 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7983 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7984 prop->type = htons(OFPGPT15_EXPERIMENTER);
7985 prop->experimenter = htonl(NTR_VENDOR_ID);
7986 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7987 strcpy(prop->selection_method, gp->selection_method);
7988 prop->selection_method_param = htonll(gp->selection_method_param);
7989 end_property(openflow, start);
7993 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7994 const struct ovs_list *buckets,
7995 struct ovs_list *replies,
7996 enum ofp_version version)
7998 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7999 struct ofp11_group_desc_stats *ogds;
8000 struct ofputil_bucket *bucket;
8003 start_ogds = reply->size;
8004 ofpbuf_put_zeros(reply, sizeof *ogds);
8005 LIST_FOR_EACH (bucket, list_node, buckets) {
8006 ofputil_put_ofp11_bucket(bucket, reply, version);
8008 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
8009 ogds->length = htons(reply->size - start_ogds);
8010 ogds->type = gds->type;
8011 ogds->group_id = htonl(gds->group_id);
8013 ofpmp_postappend(replies, start_ogds);
8017 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
8018 const struct ovs_list *buckets,
8019 struct ovs_list *replies,
8020 enum ofp_version version)
8022 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
8023 struct ofp15_group_desc_stats *ogds;
8024 struct ofputil_bucket *bucket;
8025 size_t start_ogds, start_buckets;
8027 start_ogds = reply->size;
8028 ofpbuf_put_zeros(reply, sizeof *ogds);
8029 start_buckets = reply->size;
8030 LIST_FOR_EACH (bucket, list_node, buckets) {
8031 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
8032 gds->type, reply, version);
8034 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
8035 ogds->type = gds->type;
8036 ogds->group_id = htonl(gds->group_id);
8037 ogds->bucket_list_len = htons(reply->size - start_buckets);
8039 /* Add group properties */
8040 if (gds->props.selection_method[0]) {
8041 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
8044 ogds->length = htons(reply->size - start_ogds);
8046 ofpmp_postappend(replies, start_ogds);
8049 /* Appends a group stats reply that contains the data in 'gds' to those already
8050 * present in the list of ofpbufs in 'replies'. 'replies' should have been
8051 * initialized with ofpmp_init(). */
8053 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
8054 const struct ovs_list *buckets,
8055 struct ovs_list *replies)
8057 enum ofp_version version = ofpmp_version(replies);
8065 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
8069 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
8079 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
8080 enum ofp_version version, struct ovs_list *buckets)
8082 struct ofp11_bucket *ob;
8083 uint32_t bucket_id = 0;
8086 while (buckets_length > 0) {
8087 struct ofputil_bucket *bucket;
8088 struct ofpbuf ofpacts;
8092 ob = (buckets_length >= sizeof *ob
8093 ? ofpbuf_try_pull(msg, sizeof *ob)
8096 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
8098 return OFPERR_OFPGMFC_BAD_BUCKET;
8101 ob_len = ntohs(ob->len);
8102 if (ob_len < sizeof *ob) {
8103 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8104 "%"PRIuSIZE" is not valid", ob_len);
8105 return OFPERR_OFPGMFC_BAD_BUCKET;
8106 } else if (ob_len > buckets_length) {
8107 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8108 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
8109 ob_len, buckets_length);
8110 return OFPERR_OFPGMFC_BAD_BUCKET;
8112 buckets_length -= ob_len;
8114 ofpbuf_init(&ofpacts, 0);
8115 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
8118 ofpbuf_uninit(&ofpacts);
8119 ofputil_bucket_list_destroy(buckets);
8123 bucket = xzalloc(sizeof *bucket);
8124 bucket->weight = ntohs(ob->weight);
8125 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
8127 ofpbuf_uninit(&ofpacts);
8128 ofputil_bucket_list_destroy(buckets);
8129 return OFPERR_OFPGMFC_BAD_WATCH;
8131 bucket->watch_group = ntohl(ob->watch_group);
8132 bucket->bucket_id = bucket_id++;
8134 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8135 bucket->ofpacts_len = ofpacts.size;
8136 list_push_back(buckets, &bucket->list_node);
8143 parse_ofp15_group_bucket_prop_weight(const struct ofpbuf *payload,
8146 struct ofp15_group_bucket_prop_weight *prop = payload->data;
8148 if (payload->size != sizeof *prop) {
8149 log_property(false, "OpenFlow bucket weight property length "
8150 "%u is not valid", payload->size);
8151 return OFPERR_OFPBPC_BAD_LEN;
8154 *weight = prop->weight;
8160 parse_ofp15_group_bucket_prop_watch(const struct ofpbuf *payload,
8163 struct ofp15_group_bucket_prop_watch *prop = payload->data;
8165 if (payload->size != sizeof *prop) {
8166 log_property(false, "OpenFlow bucket watch port or group "
8167 "property length %u is not valid", payload->size);
8168 return OFPERR_OFPBPC_BAD_LEN;
8171 *watch = prop->watch;
8177 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
8178 enum ofp_version version, uint8_t group_type,
8179 struct ovs_list *buckets)
8181 struct ofp15_bucket *ob;
8184 while (buckets_length > 0) {
8185 struct ofputil_bucket *bucket = NULL;
8186 struct ofpbuf ofpacts;
8187 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
8188 struct ofpbuf properties;
8189 size_t ob_len, actions_len, properties_len;
8190 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
8191 ovs_be32 watch_group = htonl(OFPG_ANY);
8192 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
8194 ofpbuf_init(&ofpacts, 0);
8196 ob = ofpbuf_try_pull(msg, sizeof *ob);
8198 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
8199 " leftover bytes", buckets_length);
8203 ob_len = ntohs(ob->len);
8204 actions_len = ntohs(ob->action_array_len);
8206 if (ob_len < sizeof *ob) {
8207 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8208 "%"PRIuSIZE" is not valid", ob_len);
8210 } else if (ob_len > buckets_length) {
8211 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8212 "%"PRIuSIZE" exceeds remaining buckets data size %"
8213 PRIuSIZE, ob_len, buckets_length);
8215 } else if (actions_len > ob_len - sizeof *ob) {
8216 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
8217 "length %"PRIuSIZE" exceeds remaining bucket "
8218 "data size %"PRIuSIZE, actions_len,
8219 ob_len - sizeof *ob);
8222 buckets_length -= ob_len;
8224 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
8230 properties_len = ob_len - sizeof *ob - actions_len;
8231 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8234 while (properties.size > 0) {
8235 struct ofpbuf payload;
8238 err = ofputil_pull_property(&properties, &payload, &type);
8244 case OFPGBPT15_WEIGHT:
8245 err = parse_ofp15_group_bucket_prop_weight(&payload, &weight);
8248 case OFPGBPT15_WATCH_PORT:
8249 err = parse_ofp15_group_bucket_prop_watch(&payload,
8253 case OFPGBPT15_WATCH_GROUP:
8254 err = parse_ofp15_group_bucket_prop_watch(&payload,
8259 log_property(false, "unknown group bucket property %"PRIu16,
8261 err = OFPERR_OFPBPC_BAD_TYPE;
8270 bucket = xzalloc(sizeof *bucket);
8272 bucket->weight = ntohs(weight);
8273 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8275 err = OFPERR_OFPGMFC_BAD_WATCH;
8278 bucket->watch_group = ntohl(watch_group);
8279 bucket->bucket_id = ntohl(ob->bucket_id);
8280 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8281 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8283 err = OFPERR_OFPGMFC_BAD_BUCKET;
8287 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8288 bucket->ofpacts_len = ofpacts.size;
8289 list_push_back(buckets, &bucket->list_node);
8295 ofpbuf_uninit(&ofpacts);
8296 ofputil_bucket_list_destroy(buckets);
8300 if (ofputil_bucket_check_duplicate_id(buckets)) {
8301 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8302 ofputil_bucket_list_destroy(buckets);
8303 return OFPERR_OFPGMFC_BAD_BUCKET;
8310 ofputil_init_group_properties(struct ofputil_group_props *gp)
8312 memset(gp, 0, sizeof *gp);
8316 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8317 enum ofp11_group_type group_type,
8318 enum ofp15_group_mod_command group_cmd,
8319 struct ofputil_group_props *gp)
8321 struct ntr_group_prop_selection_method *prop = payload->data;
8322 size_t fields_len, method_len;
8325 switch (group_type) {
8326 case OFPGT11_SELECT:
8329 case OFPGT11_INDIRECT:
8331 log_property(false, "ntr selection method property is only allowed "
8332 "for select groups");
8333 return OFPERR_OFPBPC_BAD_VALUE;
8338 switch (group_cmd) {
8340 case OFPGC15_MODIFY:
8342 case OFPGC15_DELETE:
8343 case OFPGC15_INSERT_BUCKET:
8344 case OFPGC15_REMOVE_BUCKET:
8345 log_property(false, "ntr selection method property is only allowed "
8346 "for add and delete group modifications");
8347 return OFPERR_OFPBPC_BAD_VALUE;
8352 if (payload->size < sizeof *prop) {
8353 log_property(false, "ntr selection method property length "
8354 "%u is not valid", payload->size);
8355 return OFPERR_OFPBPC_BAD_LEN;
8358 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8360 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8361 log_property(false, "ntr selection method is not null terminated");
8362 return OFPERR_OFPBPC_BAD_VALUE;
8365 if (strcmp("hash", prop->selection_method)) {
8366 log_property(false, "ntr selection method '%s' is not supported",
8367 prop->selection_method);
8368 return OFPERR_OFPBPC_BAD_VALUE;
8371 strcpy(gp->selection_method, prop->selection_method);
8372 gp->selection_method_param = ntohll(prop->selection_method_param);
8374 if (!method_len && gp->selection_method_param) {
8375 log_property(false, "ntr selection method parameter is non-zero but "
8376 "selection method is empty");
8377 return OFPERR_OFPBPC_BAD_VALUE;
8380 ofpbuf_pull(payload, sizeof *prop);
8382 fields_len = ntohs(prop->length) - sizeof *prop;
8383 if (!method_len && fields_len) {
8384 log_property(false, "ntr selection method parameter is zero "
8385 "but fields are provided");
8386 return OFPERR_OFPBPC_BAD_VALUE;
8389 error = oxm_pull_field_array(payload->data, fields_len,
8392 log_property(false, "ntr selection method fields are invalid");
8400 parse_group_prop_ntr(struct ofpbuf *payload, uint32_t exp_type,
8401 enum ofp11_group_type group_type,
8402 enum ofp15_group_mod_command group_cmd,
8403 struct ofputil_group_props *gp)
8408 case NTRT_SELECTION_METHOD:
8409 error = parse_group_prop_ntr_selection_method(payload, group_type,
8414 log_property(false, "unknown group property ntr experimenter type "
8415 "%"PRIu32, exp_type);
8416 error = OFPERR_OFPBPC_BAD_TYPE;
8424 parse_ofp15_group_prop_exp(struct ofpbuf *payload,
8425 enum ofp11_group_type group_type,
8426 enum ofp15_group_mod_command group_cmd,
8427 struct ofputil_group_props *gp)
8429 struct ofp_prop_experimenter *prop = payload->data;
8430 uint16_t experimenter;
8434 if (payload->size < sizeof *prop) {
8435 return OFPERR_OFPBPC_BAD_LEN;
8438 experimenter = ntohl(prop->experimenter);
8439 exp_type = ntohl(prop->exp_type);
8441 switch (experimenter) {
8443 case NTR_COMPAT_VENDOR_ID:
8444 error = parse_group_prop_ntr(payload, exp_type, group_type,
8449 log_property(false, "unknown group property experimenter %"PRIu16,
8451 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
8459 parse_ofp15_group_properties(struct ofpbuf *msg,
8460 enum ofp11_group_type group_type,
8461 enum ofp15_group_mod_command group_cmd,
8462 struct ofputil_group_props *gp,
8463 size_t properties_len)
8465 struct ofpbuf properties;
8467 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8470 while (properties.size > 0) {
8471 struct ofpbuf payload;
8475 error = ofputil_pull_property(&properties, &payload, &type);
8481 case OFPGPT15_EXPERIMENTER:
8482 error = parse_ofp15_group_prop_exp(&payload, group_type,
8487 log_property(false, "unknown group property %"PRIu16, type);
8488 error = OFPERR_OFPBPC_BAD_TYPE;
8501 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8503 enum ofp_version version)
8505 struct ofp11_group_desc_stats *ogds;
8509 ofpraw_pull_assert(msg);
8516 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8518 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8519 "leftover bytes at end", msg->size);
8520 return OFPERR_OFPBRC_BAD_LEN;
8522 gd->type = ogds->type;
8523 gd->group_id = ntohl(ogds->group_id);
8525 length = ntohs(ogds->length);
8526 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8527 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8528 "length %"PRIuSIZE, length);
8529 return OFPERR_OFPBRC_BAD_LEN;
8532 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8537 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8539 enum ofp_version version)
8541 struct ofp15_group_desc_stats *ogds;
8542 uint16_t length, bucket_list_len;
8546 ofpraw_pull_assert(msg);
8553 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8555 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8556 "leftover bytes at end", msg->size);
8557 return OFPERR_OFPBRC_BAD_LEN;
8559 gd->type = ogds->type;
8560 gd->group_id = ntohl(ogds->group_id);
8562 length = ntohs(ogds->length);
8563 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8564 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8565 "length %u", length);
8566 return OFPERR_OFPBRC_BAD_LEN;
8569 bucket_list_len = ntohs(ogds->bucket_list_len);
8570 if (length < bucket_list_len + sizeof *ogds) {
8571 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8572 "bucket list length %u", bucket_list_len);
8573 return OFPERR_OFPBRC_BAD_LEN;
8575 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8581 /* By definition group desc messages don't have a group mod command.
8582 * However, parse_group_prop_ntr_selection_method() checks to make sure
8583 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8584 * against group mod messages with other commands supplying
8585 * a NTR selection method group experimenter property.
8586 * Such properties are valid for group desc replies so
8587 * claim that the group mod command is OFPGC15_ADD to
8588 * satisfy the check in parse_group_prop_ntr_selection_method() */
8589 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8590 length - sizeof *ogds - bucket_list_len);
8593 /* Converts a group description reply in 'msg' into an abstract
8594 * ofputil_group_desc in 'gd'.
8596 * Multiple group description replies can be packed into a single OpenFlow
8597 * message. Calling this function multiple times for a single 'msg' iterates
8598 * through the replies. The caller must initially leave 'msg''s layer pointers
8599 * null and not modify them between calls.
8601 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8602 * otherwise a positive errno value. */
8604 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8605 struct ofpbuf *msg, enum ofp_version version)
8607 ofputil_init_group_properties(&gd->props);
8615 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8618 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8627 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8629 ofputil_bucket_list_destroy(&gm->buckets);
8632 static struct ofpbuf *
8633 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8634 const struct ofputil_group_mod *gm)
8637 struct ofp11_group_mod *ogm;
8639 struct ofputil_bucket *bucket;
8641 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8642 start_ogm = b->size;
8643 ofpbuf_put_zeros(b, sizeof *ogm);
8645 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8646 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8648 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8649 ogm->command = htons(gm->command);
8650 ogm->type = gm->type;
8651 ogm->group_id = htonl(gm->group_id);
8656 static struct ofpbuf *
8657 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8658 const struct ofputil_group_mod *gm)
8661 struct ofp15_group_mod *ogm;
8663 struct ofputil_bucket *bucket;
8664 struct id_pool *bucket_ids = NULL;
8666 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8667 start_ogm = b->size;
8668 ofpbuf_put_zeros(b, sizeof *ogm);
8670 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8673 /* Generate a bucket id if none was supplied */
8674 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8676 const struct ofputil_bucket *bkt;
8678 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8680 /* Mark all bucket_ids that are present in gm
8681 * as used in the pool. */
8682 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8683 if (bkt == bucket) {
8686 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8687 id_pool_add(bucket_ids, bkt->bucket_id);
8692 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8696 bucket_id = bucket->bucket_id;
8699 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8701 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8702 ogm->command = htons(gm->command);
8703 ogm->type = gm->type;
8704 ogm->group_id = htonl(gm->group_id);
8705 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8706 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8708 /* Add group properties */
8709 if (gm->props.selection_method[0]) {
8710 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8713 id_pool_destroy(bucket_ids);
8718 bad_group_cmd(enum ofp15_group_mod_command cmd)
8720 const char *opt_version;
8721 const char *version;
8722 const char *cmd_str;
8726 case OFPGC15_MODIFY:
8727 case OFPGC15_DELETE:
8732 case OFPGC15_INSERT_BUCKET:
8733 case OFPGC15_REMOVE_BUCKET:
8744 cmd_str = "add-group";
8747 case OFPGC15_MODIFY:
8748 cmd_str = "mod-group";
8751 case OFPGC15_DELETE:
8752 cmd_str = "del-group";
8755 case OFPGC15_INSERT_BUCKET:
8756 cmd_str = "insert-bucket";
8759 case OFPGC15_REMOVE_BUCKET:
8760 cmd_str = "remove-bucket";
8767 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8768 cmd_str, version, opt_version);
8772 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8773 * 'ofp_version' and returns the message. */
8775 ofputil_encode_group_mod(enum ofp_version ofp_version,
8776 const struct ofputil_group_mod *gm)
8779 switch (ofp_version) {
8781 bad_group_cmd(gm->command);
8787 if (gm->command > OFPGC11_DELETE) {
8788 bad_group_cmd(gm->command);
8790 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8793 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8801 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8802 struct ofputil_group_mod *gm)
8804 const struct ofp11_group_mod *ogm;
8807 ogm = ofpbuf_pull(msg, sizeof *ogm);
8808 gm->command = ntohs(ogm->command);
8809 gm->type = ogm->type;
8810 gm->group_id = ntohl(ogm->group_id);
8811 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8813 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8816 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8818 && ofp_version >= OFP13_VERSION
8819 && gm->command == OFPGC11_DELETE
8820 && !list_is_empty(&gm->buckets)) {
8821 error = OFPERR_OFPGMFC_INVALID_GROUP;
8828 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8829 struct ofputil_group_mod *gm)
8831 const struct ofp15_group_mod *ogm;
8832 uint16_t bucket_list_len;
8833 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8835 ogm = ofpbuf_pull(msg, sizeof *ogm);
8836 gm->command = ntohs(ogm->command);
8837 gm->type = ogm->type;
8838 gm->group_id = ntohl(ogm->group_id);
8840 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8841 switch (gm->command) {
8842 case OFPGC15_REMOVE_BUCKET:
8843 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8847 case OFPGC15_INSERT_BUCKET:
8848 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8849 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8850 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8856 case OFPGC11_MODIFY:
8857 case OFPGC11_DELETE:
8859 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8865 VLOG_WARN_RL(&bad_ofmsg_rl,
8866 "group command bucket id (%u) is out of range",
8867 gm->command_bucket_id);
8868 return OFPERR_OFPGMFC_BAD_BUCKET;
8871 bucket_list_len = ntohs(ogm->bucket_array_len);
8872 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8873 gm->type, &gm->buckets);
8878 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8882 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8883 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8885 ofputil_decode_group_mod(const struct ofp_header *oh,
8886 struct ofputil_group_mod *gm)
8888 enum ofp_version ofp_version = oh->version;
8890 struct ofputil_bucket *bucket;
8893 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
8894 ofpraw_pull_assert(&msg);
8896 ofputil_init_group_properties(&gm->props);
8898 switch (ofp_version)
8904 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8908 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8921 case OFPGT11_INDIRECT:
8922 if (!list_is_singleton(&gm->buckets)) {
8923 return OFPERR_OFPGMFC_INVALID_GROUP;
8927 case OFPGT11_SELECT:
8931 return OFPERR_OFPGMFC_BAD_TYPE;
8934 switch (gm->command) {
8936 case OFPGC11_MODIFY:
8937 case OFPGC11_DELETE:
8938 case OFPGC15_INSERT_BUCKET:
8940 case OFPGC15_REMOVE_BUCKET:
8941 if (!list_is_empty(&gm->buckets)) {
8942 return OFPERR_OFPGMFC_BAD_BUCKET;
8946 return OFPERR_OFPGMFC_BAD_COMMAND;
8949 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8950 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8951 return OFPERR_OFPGMFC_INVALID_GROUP;
8956 case OFPGT11_INDIRECT:
8957 if (ofputil_bucket_has_liveness(bucket)) {
8958 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8961 case OFPGT11_SELECT:
8964 if (!ofputil_bucket_has_liveness(bucket)) {
8965 return OFPERR_OFPGMFC_INVALID_GROUP;
8969 /* Returning BAD TYPE to be consistent
8970 * though gm->type has been checked already. */
8971 return OFPERR_OFPGMFC_BAD_TYPE;
8978 /* Parse a queue status request message into 'oqsr'.
8979 * Returns 0 if successful, otherwise an OFPERR_* number. */
8981 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8982 struct ofputil_queue_stats_request *oqsr)
8984 switch ((enum ofp_version)request->version) {
8989 case OFP11_VERSION: {
8990 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8991 oqsr->queue_id = ntohl(qsr11->queue_id);
8992 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8995 case OFP10_VERSION: {
8996 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8997 oqsr->queue_id = ntohl(qsr10->queue_id);
8998 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8999 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
9000 if (oqsr->port_no == OFPP_ALL) {
9001 oqsr->port_no = OFPP_ANY;
9011 /* Encode a queue stats request for 'oqsr', the encoded message
9012 * will be for OpenFlow version 'ofp_version'. Returns message
9013 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
9015 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
9016 const struct ofputil_queue_stats_request *oqsr)
9018 struct ofpbuf *request;
9020 switch (ofp_version) {
9025 case OFP15_VERSION: {
9026 struct ofp11_queue_stats_request *req;
9027 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
9028 req = ofpbuf_put_zeros(request, sizeof *req);
9029 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
9030 req->queue_id = htonl(oqsr->queue_id);
9033 case OFP10_VERSION: {
9034 struct ofp10_queue_stats_request *req;
9035 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
9036 req = ofpbuf_put_zeros(request, sizeof *req);
9037 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
9038 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
9039 ? OFPP_ALL : oqsr->port_no));
9040 req->queue_id = htonl(oqsr->queue_id);
9050 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
9053 ofputil_count_queue_stats(const struct ofp_header *oh)
9055 struct ofputil_queue_stats qs;
9059 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9060 ofpraw_pull_assert(&b);
9061 while (!ofputil_decode_queue_stats(&qs, &b)) {
9068 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
9069 const struct ofp10_queue_stats *qs10)
9071 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
9072 oqs->queue_id = ntohl(qs10->queue_id);
9073 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
9074 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
9075 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
9076 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
9082 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
9083 const struct ofp11_queue_stats *qs11)
9087 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
9092 oqs->queue_id = ntohl(qs11->queue_id);
9093 oqs->tx_bytes = ntohll(qs11->tx_bytes);
9094 oqs->tx_packets = ntohll(qs11->tx_packets);
9095 oqs->tx_errors = ntohll(qs11->tx_errors);
9096 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
9102 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
9103 const struct ofp13_queue_stats *qs13)
9105 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
9107 oqs->duration_sec = ntohl(qs13->duration_sec);
9108 oqs->duration_nsec = ntohl(qs13->duration_nsec);
9115 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
9118 const struct ofp14_queue_stats *qs14;
9121 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
9123 return OFPERR_OFPBRC_BAD_LEN;
9126 len = ntohs(qs14->length);
9127 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
9128 return OFPERR_OFPBRC_BAD_LEN;
9130 ofpbuf_pull(msg, len - sizeof *qs14);
9132 /* No properties yet defined, so ignore them for now. */
9134 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
9137 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
9138 * ofputil_queue_stats in 'qs'.
9140 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
9141 * message. Calling this function multiple times for a single 'msg' iterates
9142 * through the replies. The caller must initially leave 'msg''s layer pointers
9143 * null and not modify them between calls.
9145 * Returns 0 if successful, EOF if no replies were left in this 'msg',
9146 * otherwise a positive errno value. */
9148 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
9153 error = (msg->header ? ofpraw_decode(&raw, msg->header)
9154 : ofpraw_pull(&raw, msg));
9161 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
9162 return ofputil_pull_ofp14_queue_stats(qs, msg);
9163 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
9164 const struct ofp13_queue_stats *qs13;
9166 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
9170 return ofputil_queue_stats_from_ofp13(qs, qs13);
9171 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
9172 const struct ofp11_queue_stats *qs11;
9174 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
9178 return ofputil_queue_stats_from_ofp11(qs, qs11);
9179 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
9180 const struct ofp10_queue_stats *qs10;
9182 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
9186 return ofputil_queue_stats_from_ofp10(qs, qs10);
9192 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
9193 "bytes at end", msg->size);
9194 return OFPERR_OFPBRC_BAD_LEN;
9198 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
9199 struct ofp10_queue_stats *qs10)
9201 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
9202 memset(qs10->pad, 0, sizeof qs10->pad);
9203 qs10->queue_id = htonl(oqs->queue_id);
9204 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
9205 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
9206 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
9210 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
9211 struct ofp11_queue_stats *qs11)
9213 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
9214 qs11->queue_id = htonl(oqs->queue_id);
9215 qs11->tx_bytes = htonll(oqs->tx_bytes);
9216 qs11->tx_packets = htonll(oqs->tx_packets);
9217 qs11->tx_errors = htonll(oqs->tx_errors);
9221 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
9222 struct ofp13_queue_stats *qs13)
9224 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
9225 if (oqs->duration_sec != UINT32_MAX) {
9226 qs13->duration_sec = htonl(oqs->duration_sec);
9227 qs13->duration_nsec = htonl(oqs->duration_nsec);
9229 qs13->duration_sec = OVS_BE32_MAX;
9230 qs13->duration_nsec = OVS_BE32_MAX;
9235 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
9236 struct ofp14_queue_stats *qs14)
9238 qs14->length = htons(sizeof *qs14);
9239 memset(qs14->pad, 0, sizeof qs14->pad);
9240 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
9244 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
9246 ofputil_append_queue_stat(struct ovs_list *replies,
9247 const struct ofputil_queue_stats *oqs)
9249 switch (ofpmp_version(replies)) {
9250 case OFP13_VERSION: {
9251 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9252 ofputil_queue_stats_to_ofp13(oqs, reply);
9257 case OFP11_VERSION: {
9258 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9259 ofputil_queue_stats_to_ofp11(oqs, reply);
9263 case OFP10_VERSION: {
9264 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9265 ofputil_queue_stats_to_ofp10(oqs, reply);
9270 case OFP15_VERSION: {
9271 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9272 ofputil_queue_stats_to_ofp14(oqs, reply);
9282 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
9283 struct ofputil_bundle_ctrl_msg *msg)
9287 const struct ofp14_bundle_ctrl_msg *m;
9289 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9290 raw = ofpraw_pull_assert(&b);
9291 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
9294 msg->bundle_id = ntohl(m->bundle_id);
9295 msg->type = ntohs(m->type);
9296 msg->flags = ntohs(m->flags);
9302 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9303 struct ofputil_bundle_ctrl_msg *bc)
9305 struct ofpbuf *request;
9306 struct ofp14_bundle_ctrl_msg *m;
9308 switch (ofp_version) {
9313 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9314 "(\'-O OpenFlow14\')");
9317 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9318 m = ofpbuf_put_zeros(request, sizeof *m);
9320 m->bundle_id = htonl(bc->bundle_id);
9321 m->type = htons(bc->type);
9322 m->flags = htons(bc->flags);
9332 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9333 struct ofputil_bundle_ctrl_msg *msg)
9336 struct ofp14_bundle_ctrl_msg *m;
9338 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9339 m = ofpbuf_put_zeros(buf, sizeof *m);
9341 m->bundle_id = htonl(msg->bundle_id);
9342 m->type = htons(msg->type);
9343 m->flags = htons(msg->flags);
9348 /* Return true for bundlable state change requests, false for other messages.
9351 ofputil_is_bundlable(enum ofptype type)
9354 /* Minimum required by OpenFlow 1.4. */
9355 case OFPTYPE_PORT_MOD:
9356 case OFPTYPE_FLOW_MOD:
9359 /* Nice to have later. */
9360 case OFPTYPE_FLOW_MOD_TABLE_ID:
9361 case OFPTYPE_GROUP_MOD:
9362 case OFPTYPE_TABLE_MOD:
9363 case OFPTYPE_METER_MOD:
9364 case OFPTYPE_PACKET_OUT:
9365 case OFPTYPE_NXT_TLV_TABLE_MOD:
9367 /* Not to be bundlable. */
9368 case OFPTYPE_ECHO_REQUEST:
9369 case OFPTYPE_FEATURES_REQUEST:
9370 case OFPTYPE_GET_CONFIG_REQUEST:
9371 case OFPTYPE_SET_CONFIG:
9372 case OFPTYPE_BARRIER_REQUEST:
9373 case OFPTYPE_ROLE_REQUEST:
9374 case OFPTYPE_ECHO_REPLY:
9375 case OFPTYPE_SET_FLOW_FORMAT:
9376 case OFPTYPE_SET_PACKET_IN_FORMAT:
9377 case OFPTYPE_SET_CONTROLLER_ID:
9378 case OFPTYPE_FLOW_AGE:
9379 case OFPTYPE_FLOW_MONITOR_CANCEL:
9380 case OFPTYPE_SET_ASYNC_CONFIG:
9381 case OFPTYPE_GET_ASYNC_REQUEST:
9382 case OFPTYPE_DESC_STATS_REQUEST:
9383 case OFPTYPE_FLOW_STATS_REQUEST:
9384 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9385 case OFPTYPE_TABLE_STATS_REQUEST:
9386 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9387 case OFPTYPE_TABLE_DESC_REQUEST:
9388 case OFPTYPE_PORT_STATS_REQUEST:
9389 case OFPTYPE_QUEUE_STATS_REQUEST:
9390 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9391 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9392 case OFPTYPE_METER_STATS_REQUEST:
9393 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9394 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9395 case OFPTYPE_GROUP_STATS_REQUEST:
9396 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9397 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9398 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9399 case OFPTYPE_BUNDLE_CONTROL:
9400 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9403 case OFPTYPE_FEATURES_REPLY:
9404 case OFPTYPE_GET_CONFIG_REPLY:
9405 case OFPTYPE_PACKET_IN:
9406 case OFPTYPE_FLOW_REMOVED:
9407 case OFPTYPE_PORT_STATUS:
9408 case OFPTYPE_BARRIER_REPLY:
9409 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9410 case OFPTYPE_DESC_STATS_REPLY:
9411 case OFPTYPE_FLOW_STATS_REPLY:
9412 case OFPTYPE_QUEUE_STATS_REPLY:
9413 case OFPTYPE_PORT_STATS_REPLY:
9414 case OFPTYPE_TABLE_STATS_REPLY:
9415 case OFPTYPE_AGGREGATE_STATS_REPLY:
9416 case OFPTYPE_PORT_DESC_STATS_REPLY:
9417 case OFPTYPE_ROLE_REPLY:
9418 case OFPTYPE_FLOW_MONITOR_PAUSED:
9419 case OFPTYPE_FLOW_MONITOR_RESUMED:
9420 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9421 case OFPTYPE_GET_ASYNC_REPLY:
9422 case OFPTYPE_GROUP_STATS_REPLY:
9423 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9424 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9425 case OFPTYPE_METER_STATS_REPLY:
9426 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9427 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9428 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9429 case OFPTYPE_TABLE_DESC_REPLY:
9430 case OFPTYPE_ROLE_STATUS:
9431 case OFPTYPE_REQUESTFORWARD:
9432 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9433 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9441 ofputil_decode_bundle_add(const struct ofp_header *oh,
9442 struct ofputil_bundle_add_msg *msg,
9443 enum ofptype *type_ptr)
9445 const struct ofp14_bundle_ctrl_msg *m;
9452 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9453 raw = ofpraw_pull_assert(&b);
9454 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9456 m = ofpbuf_pull(&b, sizeof *m);
9457 msg->bundle_id = ntohl(m->bundle_id);
9458 msg->flags = ntohs(m->flags);
9461 if (msg->msg->version != oh->version) {
9462 return OFPERR_NXBFC_BAD_VERSION;
9464 inner_len = ntohs(msg->msg->length);
9465 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9466 return OFPERR_OFPBFC_MSG_BAD_LEN;
9468 if (msg->msg->xid != oh->xid) {
9469 return OFPERR_OFPBFC_MSG_BAD_XID;
9472 /* Reject unbundlable messages. */
9476 error = ofptype_decode(type_ptr, msg->msg);
9478 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9479 "message is unparsable (%s)", ofperr_get_name(error));
9480 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9483 if (!ofputil_is_bundlable(*type_ptr)) {
9484 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9485 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(*type_ptr));
9486 return OFPERR_OFPBFC_MSG_UNSUP;
9493 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9494 struct ofputil_bundle_add_msg *msg)
9496 struct ofpbuf *request;
9497 struct ofp14_bundle_ctrl_msg *m;
9499 /* Must use the same xid as the embedded message. */
9500 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9502 m = ofpbuf_put_zeros(request, sizeof *m);
9504 m->bundle_id = htonl(msg->bundle_id);
9505 m->flags = htons(msg->flags);
9506 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9512 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9514 struct ofputil_tlv_map *map;
9516 LIST_FOR_EACH (map, list_node, mappings) {
9517 struct nx_tlv_map *nx_map;
9519 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9520 nx_map->option_class = htons(map->option_class);
9521 nx_map->option_type = map->option_type;
9522 nx_map->option_len = map->option_len;
9523 nx_map->index = htons(map->index);
9528 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9529 struct ofputil_tlv_table_mod *ttm)
9532 struct nx_tlv_table_mod *nx_ttm;
9534 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9535 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9536 nx_ttm->command = htons(ttm->command);
9537 encode_tlv_table_mappings(b, &ttm->mappings);
9543 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9544 struct ovs_list *mappings)
9546 list_init(mappings);
9549 struct nx_tlv_map *nx_map;
9550 struct ofputil_tlv_map *map;
9552 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9553 map = xmalloc(sizeof *map);
9554 list_push_back(mappings, &map->list_node);
9556 map->option_class = ntohs(nx_map->option_class);
9557 map->option_type = nx_map->option_type;
9559 map->option_len = nx_map->option_len;
9560 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9561 VLOG_WARN_RL(&bad_ofmsg_rl,
9562 "tlv table option length (%u) is not a valid option size",
9564 ofputil_uninit_tlv_table(mappings);
9565 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9568 map->index = ntohs(nx_map->index);
9569 if (map->index >= max_fields) {
9570 VLOG_WARN_RL(&bad_ofmsg_rl,
9571 "tlv table field index (%u) is too large (max %u)",
9572 map->index, max_fields - 1);
9573 ofputil_uninit_tlv_table(mappings);
9574 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9582 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9583 struct ofputil_tlv_table_mod *ttm)
9586 struct nx_tlv_table_mod *nx_ttm;
9588 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9589 ofpraw_pull_assert(&msg);
9591 nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9592 ttm->command = ntohs(nx_ttm->command);
9593 if (ttm->command > NXTTMC_CLEAR) {
9594 VLOG_WARN_RL(&bad_ofmsg_rl,
9595 "tlv table mod command (%u) is out of range",
9597 return OFPERR_NXTTMFC_BAD_COMMAND;
9600 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9605 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9606 struct ofputil_tlv_table_reply *ttr)
9609 struct nx_tlv_table_reply *nx_ttr;
9611 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9612 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9613 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9614 nx_ttr->max_fields = htons(ttr->max_fields);
9616 encode_tlv_table_mappings(b, &ttr->mappings);
9621 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9622 * if successful, otherwise an ofperr.
9624 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9625 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9626 * less than TUN_METADATA_NUM_OPTS. */
9628 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9629 struct ofputil_tlv_table_reply *ttr)
9632 struct nx_tlv_table_reply *nx_ttr;
9634 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9635 ofpraw_pull_assert(&msg);
9637 nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9638 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9639 ttr->max_fields = ntohs(nx_ttr->max_fields);
9641 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9645 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9647 struct ofputil_tlv_map *map;
9649 LIST_FOR_EACH_POP (map, list_node, mappings) {
9654 /* Decodes the OpenFlow "set async config" request and "get async config
9655 * reply" message in '*oh' into an abstract form in 'master' and 'slave'.
9657 * If 'loose' is true, this function ignores properties and values that it does
9658 * not understand, as a controller would want to do when interpreting
9659 * capabilities provided by a switch. If 'loose' is false, this function
9660 * treats unknown properties and values as an error, as a switch would want to
9661 * do when interpreting a configuration request made by a controller.
9663 * Returns 0 if successful, otherwise an OFPERR_* value.
9665 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9666 * the valid range of mask.
9668 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9671 ofputil_decode_set_async_config(const struct ofp_header *oh,
9672 uint32_t master[OAM_N_TYPES],
9673 uint32_t slave[OAM_N_TYPES],
9679 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9680 raw = ofpraw_pull_assert(&b);
9682 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9683 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9684 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9685 const struct nx_async_config *msg = ofpmsg_body(oh);
9687 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
9688 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
9689 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
9691 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
9692 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
9693 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
9695 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9696 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY) {
9698 while (b.size > 0) {
9699 struct ofp14_async_config_prop_reasons *msg;
9700 struct ofpbuf property;
9704 error = ofputil_pull_property(&b, &property, &type);
9709 msg = property.data;
9711 if (property.size != sizeof *msg) {
9712 return OFPERR_OFPBRC_BAD_LEN;
9716 error = ofputil_check_mask(type, ntohl(msg->mask));
9723 case OFPACPT_PACKET_IN_SLAVE:
9724 slave[OAM_PACKET_IN] = ntohl(msg->mask);
9727 case OFPACPT_PACKET_IN_MASTER:
9728 master[OAM_PACKET_IN] = ntohl(msg->mask);
9731 case OFPACPT_PORT_STATUS_SLAVE:
9732 slave[OAM_PORT_STATUS] = ntohl(msg->mask);
9735 case OFPACPT_PORT_STATUS_MASTER:
9736 master[OAM_PORT_STATUS] = ntohl(msg->mask);
9739 case OFPACPT_FLOW_REMOVED_SLAVE:
9740 slave[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9743 case OFPACPT_FLOW_REMOVED_MASTER:
9744 master[OAM_FLOW_REMOVED] = ntohl(msg->mask);
9747 case OFPACPT_ROLE_STATUS_SLAVE:
9748 slave[OAM_ROLE_STATUS] = ntohl(msg->mask);
9751 case OFPACPT_ROLE_STATUS_MASTER:
9752 master[OAM_ROLE_STATUS] = ntohl(msg->mask);
9755 case OFPACPT_TABLE_STATUS_SLAVE:
9756 slave[OAM_TABLE_STATUS] = ntohl(msg->mask);
9759 case OFPACPT_TABLE_STATUS_MASTER:
9760 master[OAM_TABLE_STATUS] = ntohl(msg->mask);
9763 case OFPACPT_REQUESTFORWARD_SLAVE:
9764 slave[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9767 case OFPACPT_REQUESTFORWARD_MASTER:
9768 master[OAM_REQUESTFORWARD] = ntohl(msg->mask);
9772 error = loose ? 0 : OFPERR_OFPACFC_UNSUPPORTED;
9777 return OFPERR_OFPBRC_BAD_VERSION;
9782 /* Append all asynchronous configuration properties in GET_ASYNC_REPLY
9783 * message, describing if various set of asynchronous messages are enabled
9786 ofputil_get_async_reply(struct ofpbuf *buf, const uint32_t master_mask,
9787 const uint32_t slave_mask, const uint32_t type)
9791 for (role = 0; role < 2; role++) {
9792 struct ofp14_async_config_prop_reasons *msg;
9794 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9798 msg->type = (role ? htons(OFPACPT_PACKET_IN_SLAVE)
9799 : htons(OFPACPT_PACKET_IN_MASTER));
9802 case OAM_PORT_STATUS:
9803 msg->type = (role ? htons(OFPACPT_PORT_STATUS_SLAVE)
9804 : htons(OFPACPT_PORT_STATUS_MASTER));
9807 case OAM_FLOW_REMOVED:
9808 msg->type = (role ? htons(OFPACPT_FLOW_REMOVED_SLAVE)
9809 : htons(OFPACPT_FLOW_REMOVED_MASTER));
9812 case OAM_ROLE_STATUS:
9813 msg->type = (role ? htons(OFPACPT_ROLE_STATUS_SLAVE)
9814 : htons(OFPACPT_ROLE_STATUS_MASTER));
9817 case OAM_TABLE_STATUS:
9818 msg->type = (role ? htons(OFPACPT_TABLE_STATUS_SLAVE)
9819 : htons(OFPACPT_TABLE_STATUS_MASTER));
9822 case OAM_REQUESTFORWARD:
9823 msg->type = (role ? htons(OFPACPT_REQUESTFORWARD_SLAVE)
9824 : htons(OFPACPT_REQUESTFORWARD_MASTER));
9828 return OFPERR_OFPBRC_BAD_TYPE;
9830 msg->length = htons(sizeof *msg);
9831 msg->mask = (role ? htonl(slave_mask) : htonl(master_mask));
9837 /* Returns a OpenFlow message that encodes 'asynchronous configuration' properly
9838 * as a reply to get async config request. */
9840 ofputil_encode_get_async_config(const struct ofp_header *oh,
9841 uint32_t master[OAM_N_TYPES],
9842 uint32_t slave[OAM_N_TYPES])
9847 buf = ofpraw_alloc_reply((oh->version < OFP14_VERSION
9848 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9849 : OFPRAW_OFPT14_GET_ASYNC_REPLY), oh, 0);
9851 if (oh->version < OFP14_VERSION) {
9852 struct nx_async_config *msg;
9853 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9855 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
9856 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
9857 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
9859 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
9860 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
9861 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
9862 } else if (oh->version == OFP14_VERSION) {
9863 for (type = 0; type < OAM_N_TYPES; type++) {
9864 ofputil_get_async_reply(buf, master[type], slave[type], type);