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"
42 #include "openflow/netronome-ext.h"
45 #include "tun-metadata.h"
46 #include "unaligned.h"
47 #include "type-props.h"
48 #include "openvswitch/vlog.h"
51 VLOG_DEFINE_THIS_MODULE(ofp_util);
53 /* Rate limit for OpenFlow message parse errors. These always indicate a bug
54 * in the peer and so there's not much point in showing a lot of them. */
55 static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
57 static enum ofputil_table_vacancy ofputil_decode_table_vacancy(
58 ovs_be32 config, enum ofp_version);
59 static enum ofputil_table_eviction ofputil_decode_table_eviction(
60 ovs_be32 config, enum ofp_version);
61 static ovs_be32 ofputil_encode_table_config(enum ofputil_table_miss,
62 enum ofputil_table_eviction,
63 enum ofputil_table_vacancy,
67 ofputil_check_mask(uint16_t type, uint32_t mask)
70 case OFPACPT_PACKET_IN_SLAVE:
71 case OFPACPT_PACKET_IN_MASTER:
72 if (mask > MAXIMUM_MASK_PACKET_IN) {
73 return OFPERR_OFPACFC_INVALID;
77 case OFPACPT_FLOW_REMOVED_SLAVE:
78 case OFPACPT_FLOW_REMOVED_MASTER:
79 if (mask > MAXIMUM_MASK_FLOW_REMOVED) {
80 return OFPERR_OFPACFC_INVALID;
84 case OFPACPT_PORT_STATUS_SLAVE:
85 case OFPACPT_PORT_STATUS_MASTER:
86 if (mask > MAXIMUM_MASK_PORT_STATUS) {
87 return OFPERR_OFPACFC_INVALID;
91 case OFPACPT_ROLE_STATUS_SLAVE:
92 case OFPACPT_ROLE_STATUS_MASTER:
93 if (mask > MAXIMUM_MASK_ROLE_STATUS) {
94 return OFPERR_OFPACFC_INVALID;
98 case OFPACPT_TABLE_STATUS_SLAVE:
99 case OFPACPT_TABLE_STATUS_MASTER:
100 if ((mask < MINIMUM_MASK_TABLE_STATUS && mask != 0) |
101 (mask > MAXIMUM_MASK_TABLE_STATUS)) {
102 return OFPERR_OFPACFC_INVALID;
106 case OFPACPT_REQUESTFORWARD_SLAVE:
107 case OFPACPT_REQUESTFORWARD_MASTER:
108 if (mask > MAXIMUM_MASK_REQUESTFORWARD) {
109 return OFPERR_OFPACFC_INVALID;
116 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
117 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
120 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
121 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
122 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
123 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
126 ofputil_wcbits_to_netmask(int wcbits)
129 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
132 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
133 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
134 * between 0 and 32 inclusive.
136 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
137 * still be in the valid range but isn't otherwise meaningful. */
139 ofputil_netmask_to_wcbits(ovs_be32 netmask)
141 return 32 - ip_count_cidr_bits(netmask);
144 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
145 * flow_wildcards in 'wc' for use in struct match. It is the caller's
146 * responsibility to handle the special case where the flow match's dl_vlan is
147 * set to OFP_VLAN_NONE. */
149 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
151 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35);
153 /* Initialize most of wc. */
154 flow_wildcards_init_catchall(wc);
156 if (!(ofpfw & OFPFW10_IN_PORT)) {
157 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
160 if (!(ofpfw & OFPFW10_NW_TOS)) {
161 wc->masks.nw_tos |= IP_DSCP_MASK;
164 if (!(ofpfw & OFPFW10_NW_PROTO)) {
165 wc->masks.nw_proto = UINT8_MAX;
167 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
168 >> OFPFW10_NW_SRC_SHIFT);
169 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
170 >> OFPFW10_NW_DST_SHIFT);
172 if (!(ofpfw & OFPFW10_TP_SRC)) {
173 wc->masks.tp_src = OVS_BE16_MAX;
175 if (!(ofpfw & OFPFW10_TP_DST)) {
176 wc->masks.tp_dst = OVS_BE16_MAX;
179 if (!(ofpfw & OFPFW10_DL_SRC)) {
180 WC_MASK_FIELD(wc, dl_src);
182 if (!(ofpfw & OFPFW10_DL_DST)) {
183 WC_MASK_FIELD(wc, dl_dst);
185 if (!(ofpfw & OFPFW10_DL_TYPE)) {
186 wc->masks.dl_type = OVS_BE16_MAX;
190 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
191 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
193 if (!(ofpfw & OFPFW10_DL_VLAN)) {
194 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
198 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
200 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
203 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
205 /* Initialize match->wc. */
206 memset(&match->flow, 0, sizeof match->flow);
207 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
209 /* Initialize most of match->flow. */
210 match->flow.nw_src = ofmatch->nw_src;
211 match->flow.nw_dst = ofmatch->nw_dst;
212 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
213 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
214 match->flow.tp_src = ofmatch->tp_src;
215 match->flow.tp_dst = ofmatch->tp_dst;
216 match->flow.dl_src = ofmatch->dl_src;
217 match->flow.dl_dst = ofmatch->dl_dst;
218 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
219 match->flow.nw_proto = ofmatch->nw_proto;
221 /* Translate VLANs. */
222 if (!(ofpfw & OFPFW10_DL_VLAN) &&
223 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
224 /* Match only packets without 802.1Q header.
226 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
228 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
229 * because we can't have a specific PCP without an 802.1Q header.
230 * However, older versions of OVS treated this as matching packets
231 * withut an 802.1Q header, so we do here too. */
232 match->flow.vlan_tci = htons(0);
233 match->wc.masks.vlan_tci = htons(0xffff);
235 ovs_be16 vid, pcp, tci;
238 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
239 hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
241 tci = vid | pcp | htons(VLAN_CFI);
242 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
246 match_zero_wildcarded_fields(match);
249 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
251 ofputil_match_to_ofp10_match(const struct match *match,
252 struct ofp10_match *ofmatch)
254 const struct flow_wildcards *wc = &match->wc;
257 /* Figure out most OpenFlow wildcards. */
259 if (!wc->masks.in_port.ofp_port) {
260 ofpfw |= OFPFW10_IN_PORT;
262 if (!wc->masks.dl_type) {
263 ofpfw |= OFPFW10_DL_TYPE;
265 if (!wc->masks.nw_proto) {
266 ofpfw |= OFPFW10_NW_PROTO;
268 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
269 << OFPFW10_NW_SRC_SHIFT);
270 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
271 << OFPFW10_NW_DST_SHIFT);
272 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
273 ofpfw |= OFPFW10_NW_TOS;
275 if (!wc->masks.tp_src) {
276 ofpfw |= OFPFW10_TP_SRC;
278 if (!wc->masks.tp_dst) {
279 ofpfw |= OFPFW10_TP_DST;
281 if (eth_addr_is_zero(wc->masks.dl_src)) {
282 ofpfw |= OFPFW10_DL_SRC;
284 if (eth_addr_is_zero(wc->masks.dl_dst)) {
285 ofpfw |= OFPFW10_DL_DST;
288 /* Translate VLANs. */
289 ofmatch->dl_vlan = htons(0);
290 ofmatch->dl_vlan_pcp = 0;
291 if (match->wc.masks.vlan_tci == htons(0)) {
292 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
293 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
294 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
295 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
297 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
298 ofpfw |= OFPFW10_DL_VLAN;
300 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
303 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
304 ofpfw |= OFPFW10_DL_VLAN_PCP;
306 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
310 /* Compose most of the match structure. */
311 ofmatch->wildcards = htonl(ofpfw);
312 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
313 ofmatch->dl_src = match->flow.dl_src;
314 ofmatch->dl_dst = match->flow.dl_dst;
315 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
316 ofmatch->nw_src = match->flow.nw_src;
317 ofmatch->nw_dst = match->flow.nw_dst;
318 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
319 ofmatch->nw_proto = match->flow.nw_proto;
320 ofmatch->tp_src = match->flow.tp_src;
321 ofmatch->tp_dst = match->flow.tp_dst;
322 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
323 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
327 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
328 uint16_t *padded_match_len)
330 struct ofp11_match_header *omh = buf->data;
333 if (buf->size < sizeof *omh) {
334 return OFPERR_OFPBMC_BAD_LEN;
337 match_len = ntohs(omh->length);
339 switch (ntohs(omh->type)) {
340 case OFPMT_STANDARD: {
341 struct ofp11_match *om;
343 if (match_len != sizeof *om || buf->size < sizeof *om) {
344 return OFPERR_OFPBMC_BAD_LEN;
346 om = ofpbuf_pull(buf, sizeof *om);
347 if (padded_match_len) {
348 *padded_match_len = match_len;
350 return ofputil_match_from_ofp11_match(om, match);
354 if (padded_match_len) {
355 *padded_match_len = ROUND_UP(match_len, 8);
357 return oxm_pull_match(buf, match);
360 return OFPERR_OFPBMC_BAD_TYPE;
364 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
365 * Returns 0 if successful, otherwise an OFPERR_* value. */
367 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
370 uint16_t wc = ntohl(ofmatch->wildcards);
371 bool ipv4, arp, rarp;
373 match_init_catchall(match);
375 if (!(wc & OFPFW11_IN_PORT)) {
379 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
381 return OFPERR_OFPBMC_BAD_VALUE;
383 match_set_in_port(match, ofp_port);
386 match_set_dl_src_masked(match, ofmatch->dl_src,
387 eth_addr_invert(ofmatch->dl_src_mask));
388 match_set_dl_dst_masked(match, ofmatch->dl_dst,
389 eth_addr_invert(ofmatch->dl_dst_mask));
391 if (!(wc & OFPFW11_DL_VLAN)) {
392 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
393 /* Match only packets without a VLAN tag. */
394 match->flow.vlan_tci = htons(0);
395 match->wc.masks.vlan_tci = OVS_BE16_MAX;
397 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
398 /* Match any packet with a VLAN tag regardless of VID. */
399 match->flow.vlan_tci = htons(VLAN_CFI);
400 match->wc.masks.vlan_tci = htons(VLAN_CFI);
401 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
402 /* Match only packets with the specified VLAN VID. */
403 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
404 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
407 return OFPERR_OFPBMC_BAD_VALUE;
410 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
411 if (ofmatch->dl_vlan_pcp <= 7) {
412 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
414 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
417 return OFPERR_OFPBMC_BAD_VALUE;
423 if (!(wc & OFPFW11_DL_TYPE)) {
424 match_set_dl_type(match,
425 ofputil_dl_type_from_openflow(ofmatch->dl_type));
428 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
429 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
430 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
432 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
433 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
435 return OFPERR_OFPBMC_BAD_VALUE;
438 match_set_nw_dscp(match, ofmatch->nw_tos);
441 if (ipv4 || arp || rarp) {
442 if (!(wc & OFPFW11_NW_PROTO)) {
443 match_set_nw_proto(match, ofmatch->nw_proto);
445 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
446 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
449 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
450 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
451 switch (match->flow.nw_proto) {
453 /* "A.2.3 Flow Match Structures" in OF1.1 says:
455 * The tp_src and tp_dst fields will be ignored unless the
456 * network protocol specified is as TCP, UDP or SCTP.
458 * but I'm pretty sure we should support ICMP too, otherwise
459 * that's a regression from OF1.0. */
460 if (!(wc & OFPFW11_TP_SRC)) {
461 uint16_t icmp_type = ntohs(ofmatch->tp_src);
462 if (icmp_type < 0x100) {
463 match_set_icmp_type(match, icmp_type);
465 return OFPERR_OFPBMC_BAD_FIELD;
468 if (!(wc & OFPFW11_TP_DST)) {
469 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
470 if (icmp_code < 0x100) {
471 match_set_icmp_code(match, icmp_code);
473 return OFPERR_OFPBMC_BAD_FIELD;
481 if (!(wc & (OFPFW11_TP_SRC))) {
482 match_set_tp_src(match, ofmatch->tp_src);
484 if (!(wc & (OFPFW11_TP_DST))) {
485 match_set_tp_dst(match, ofmatch->tp_dst);
490 /* OF1.1 says explicitly to ignore this. */
495 if (eth_type_mpls(match->flow.dl_type)) {
496 if (!(wc & OFPFW11_MPLS_LABEL)) {
497 match_set_mpls_label(match, 0, ofmatch->mpls_label);
499 if (!(wc & OFPFW11_MPLS_TC)) {
500 match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
504 match_set_metadata_masked(match, ofmatch->metadata,
505 ~ofmatch->metadata_mask);
510 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
512 ofputil_match_to_ofp11_match(const struct match *match,
513 struct ofp11_match *ofmatch)
517 memset(ofmatch, 0, sizeof *ofmatch);
518 ofmatch->omh.type = htons(OFPMT_STANDARD);
519 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
521 if (!match->wc.masks.in_port.ofp_port) {
522 wc |= OFPFW11_IN_PORT;
524 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
527 ofmatch->dl_src = match->flow.dl_src;
528 ofmatch->dl_src_mask = eth_addr_invert(match->wc.masks.dl_src);
529 ofmatch->dl_dst = match->flow.dl_dst;
530 ofmatch->dl_dst_mask = eth_addr_invert(match->wc.masks.dl_dst);
532 if (match->wc.masks.vlan_tci == htons(0)) {
533 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
534 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
535 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
536 ofmatch->dl_vlan = htons(OFPVID11_NONE);
537 wc |= OFPFW11_DL_VLAN_PCP;
539 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
540 ofmatch->dl_vlan = htons(OFPVID11_ANY);
542 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
545 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
546 wc |= OFPFW11_DL_VLAN_PCP;
548 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
552 if (!match->wc.masks.dl_type) {
553 wc |= OFPFW11_DL_TYPE;
555 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
558 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
559 wc |= OFPFW11_NW_TOS;
561 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
564 if (!match->wc.masks.nw_proto) {
565 wc |= OFPFW11_NW_PROTO;
567 ofmatch->nw_proto = match->flow.nw_proto;
570 ofmatch->nw_src = match->flow.nw_src;
571 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
572 ofmatch->nw_dst = match->flow.nw_dst;
573 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
575 if (!match->wc.masks.tp_src) {
576 wc |= OFPFW11_TP_SRC;
578 ofmatch->tp_src = match->flow.tp_src;
581 if (!match->wc.masks.tp_dst) {
582 wc |= OFPFW11_TP_DST;
584 ofmatch->tp_dst = match->flow.tp_dst;
587 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
588 wc |= OFPFW11_MPLS_LABEL;
590 ofmatch->mpls_label = htonl(mpls_lse_to_label(
591 match->flow.mpls_lse[0]));
594 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
595 wc |= OFPFW11_MPLS_TC;
597 ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
600 ofmatch->metadata = match->flow.metadata;
601 ofmatch->metadata_mask = ~match->wc.masks.metadata;
603 ofmatch->wildcards = htonl(wc);
606 /* Returns the "typical" length of a match for 'protocol', for use in
607 * estimating space to preallocate. */
609 ofputil_match_typical_len(enum ofputil_protocol protocol)
612 case OFPUTIL_P_OF10_STD:
613 case OFPUTIL_P_OF10_STD_TID:
614 return sizeof(struct ofp10_match);
616 case OFPUTIL_P_OF10_NXM:
617 case OFPUTIL_P_OF10_NXM_TID:
618 return NXM_TYPICAL_LEN;
620 case OFPUTIL_P_OF11_STD:
621 return sizeof(struct ofp11_match);
623 case OFPUTIL_P_OF12_OXM:
624 case OFPUTIL_P_OF13_OXM:
625 case OFPUTIL_P_OF14_OXM:
626 case OFPUTIL_P_OF15_OXM:
627 return NXM_TYPICAL_LEN;
634 /* Appends to 'b' an struct ofp11_match_header followed by a match that
635 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
636 * data appended out to a multiple of 8. 'protocol' must be one that is usable
637 * in OpenFlow 1.1 or later.
639 * This function can cause 'b''s data to be reallocated.
641 * Returns the number of bytes appended to 'b', excluding the padding. Never
644 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
645 enum ofputil_protocol protocol)
648 case OFPUTIL_P_OF10_STD:
649 case OFPUTIL_P_OF10_STD_TID:
650 case OFPUTIL_P_OF10_NXM:
651 case OFPUTIL_P_OF10_NXM_TID:
654 case OFPUTIL_P_OF11_STD: {
655 struct ofp11_match *om;
657 /* Make sure that no padding is needed. */
658 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
660 om = ofpbuf_put_uninit(b, sizeof *om);
661 ofputil_match_to_ofp11_match(match, om);
665 case OFPUTIL_P_OF12_OXM:
666 case OFPUTIL_P_OF13_OXM:
667 case OFPUTIL_P_OF14_OXM:
668 case OFPUTIL_P_OF15_OXM:
669 return oxm_put_match(b, match,
670 ofputil_protocol_to_ofp_version(protocol));
676 /* Given a 'dl_type' value in the format used in struct flow, returns the
677 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
680 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
682 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
683 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
687 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
688 * structure, returns the corresponding 'dl_type' value for use in struct
691 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
693 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
694 ? htons(FLOW_DL_TYPE_NONE)
700 struct proto_abbrev {
701 enum ofputil_protocol protocol;
705 /* Most users really don't care about some of the differences between
706 * protocols. These abbreviations help with that. */
707 static const struct proto_abbrev proto_abbrevs[] = {
708 { OFPUTIL_P_ANY, "any" },
709 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
710 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
711 { OFPUTIL_P_ANY_OXM, "OXM" },
713 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
715 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
724 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
726 /* Returns the set of ofputil_protocols that are supported with the given
727 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
728 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
729 * if 'version' is not supported or outside the valid range. */
730 enum ofputil_protocol
731 ofputil_protocols_from_ofp_version(enum ofp_version version)
735 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
737 return OFPUTIL_P_OF11_STD;
739 return OFPUTIL_P_OF12_OXM;
741 return OFPUTIL_P_OF13_OXM;
743 return OFPUTIL_P_OF14_OXM;
745 return OFPUTIL_P_OF15_OXM;
751 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
752 * connection that has negotiated the given 'version'. 'version' should
753 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
754 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
755 * outside the valid range. */
756 enum ofputil_protocol
757 ofputil_protocol_from_ofp_version(enum ofp_version version)
759 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
762 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
763 * etc.) that corresponds to 'protocol'. */
765 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
768 case OFPUTIL_P_OF10_STD:
769 case OFPUTIL_P_OF10_STD_TID:
770 case OFPUTIL_P_OF10_NXM:
771 case OFPUTIL_P_OF10_NXM_TID:
772 return OFP10_VERSION;
773 case OFPUTIL_P_OF11_STD:
774 return OFP11_VERSION;
775 case OFPUTIL_P_OF12_OXM:
776 return OFP12_VERSION;
777 case OFPUTIL_P_OF13_OXM:
778 return OFP13_VERSION;
779 case OFPUTIL_P_OF14_OXM:
780 return OFP14_VERSION;
781 case OFPUTIL_P_OF15_OXM:
782 return OFP15_VERSION;
788 /* Returns a bitmap of OpenFlow versions that are supported by at
789 * least one of the 'protocols'. */
791 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
795 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
796 enum ofputil_protocol protocol = rightmost_1bit(protocols);
798 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
804 /* Returns the set of protocols that are supported on top of the
805 * OpenFlow versions included in 'bitmap'. */
806 enum ofputil_protocol
807 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
809 enum ofputil_protocol protocols = 0;
811 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
812 enum ofp_version version = rightmost_1bit_idx(bitmap);
814 protocols |= ofputil_protocols_from_ofp_version(version);
820 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
823 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
825 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
828 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
829 * extension turned on or off if 'enable' is true or false, respectively.
831 * This extension is only useful for protocols whose "standard" version does
832 * not allow specific tables to be modified. In particular, this is true of
833 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
834 * specifies a table ID and so there is no need for such an extension. When
835 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
836 * extension, this function just returns its 'protocol' argument unchanged
837 * regardless of the value of 'enable'. */
838 enum ofputil_protocol
839 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
842 case OFPUTIL_P_OF10_STD:
843 case OFPUTIL_P_OF10_STD_TID:
844 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
846 case OFPUTIL_P_OF10_NXM:
847 case OFPUTIL_P_OF10_NXM_TID:
848 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
850 case OFPUTIL_P_OF11_STD:
851 return OFPUTIL_P_OF11_STD;
853 case OFPUTIL_P_OF12_OXM:
854 return OFPUTIL_P_OF12_OXM;
856 case OFPUTIL_P_OF13_OXM:
857 return OFPUTIL_P_OF13_OXM;
859 case OFPUTIL_P_OF14_OXM:
860 return OFPUTIL_P_OF14_OXM;
862 case OFPUTIL_P_OF15_OXM:
863 return OFPUTIL_P_OF15_OXM;
870 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
871 * some extension to a standard protocol version, the return value is the
872 * standard version of that protocol without any extension. If 'protocol' is a
873 * standard protocol version, returns 'protocol' unchanged. */
874 enum ofputil_protocol
875 ofputil_protocol_to_base(enum ofputil_protocol protocol)
877 return ofputil_protocol_set_tid(protocol, false);
880 /* Returns 'new_base' with any extensions taken from 'cur'. */
881 enum ofputil_protocol
882 ofputil_protocol_set_base(enum ofputil_protocol cur,
883 enum ofputil_protocol new_base)
885 bool tid = (cur & OFPUTIL_P_TID) != 0;
888 case OFPUTIL_P_OF10_STD:
889 case OFPUTIL_P_OF10_STD_TID:
890 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
892 case OFPUTIL_P_OF10_NXM:
893 case OFPUTIL_P_OF10_NXM_TID:
894 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
896 case OFPUTIL_P_OF11_STD:
897 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
899 case OFPUTIL_P_OF12_OXM:
900 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
902 case OFPUTIL_P_OF13_OXM:
903 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
905 case OFPUTIL_P_OF14_OXM:
906 return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
908 case OFPUTIL_P_OF15_OXM:
909 return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
916 /* Returns a string form of 'protocol', if a simple form exists (that is, if
917 * 'protocol' is either a single protocol or it is a combination of protocols
918 * that have a single abbreviation). Otherwise, returns NULL. */
920 ofputil_protocol_to_string(enum ofputil_protocol protocol)
922 const struct proto_abbrev *p;
924 /* Use a "switch" statement for single-bit names so that we get a compiler
925 * warning if we forget any. */
927 case OFPUTIL_P_OF10_NXM:
928 return "NXM-table_id";
930 case OFPUTIL_P_OF10_NXM_TID:
931 return "NXM+table_id";
933 case OFPUTIL_P_OF10_STD:
934 return "OpenFlow10-table_id";
936 case OFPUTIL_P_OF10_STD_TID:
937 return "OpenFlow10+table_id";
939 case OFPUTIL_P_OF11_STD:
942 case OFPUTIL_P_OF12_OXM:
943 return "OXM-OpenFlow12";
945 case OFPUTIL_P_OF13_OXM:
946 return "OXM-OpenFlow13";
948 case OFPUTIL_P_OF14_OXM:
949 return "OXM-OpenFlow14";
951 case OFPUTIL_P_OF15_OXM:
952 return "OXM-OpenFlow15";
955 /* Check abbreviations. */
956 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
957 if (protocol == p->protocol) {
965 /* Returns a string that represents 'protocols'. The return value might be a
966 * comma-separated list if 'protocols' doesn't have a simple name. The return
967 * value is "none" if 'protocols' is 0.
969 * The caller must free the returned string (with free()). */
971 ofputil_protocols_to_string(enum ofputil_protocol protocols)
975 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
976 if (protocols == 0) {
977 return xstrdup("none");
982 const struct proto_abbrev *p;
986 ds_put_char(&s, ',');
989 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
990 if ((protocols & p->protocol) == p->protocol) {
991 ds_put_cstr(&s, p->name);
992 protocols &= ~p->protocol;
997 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
998 enum ofputil_protocol bit = 1u << i;
1000 if (protocols & bit) {
1001 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
1010 return ds_steal_cstr(&s);
1013 static enum ofputil_protocol
1014 ofputil_protocol_from_string__(const char *s, size_t n)
1016 const struct proto_abbrev *p;
1019 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1020 enum ofputil_protocol bit = 1u << i;
1021 const char *name = ofputil_protocol_to_string(bit);
1023 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
1028 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1029 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
1037 /* Returns the nonempty set of protocols represented by 's', which can be a
1038 * single protocol name or abbreviation or a comma-separated list of them.
1040 * Aborts the program with an error message if 's' is invalid. */
1041 enum ofputil_protocol
1042 ofputil_protocols_from_string(const char *s)
1044 const char *orig_s = s;
1045 enum ofputil_protocol protocols;
1049 enum ofputil_protocol p;
1052 n = strcspn(s, ",");
1058 p = ofputil_protocol_from_string__(s, n);
1060 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
1068 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
1074 ofputil_version_from_string(const char *s)
1076 if (!strcasecmp(s, "OpenFlow10")) {
1077 return OFP10_VERSION;
1079 if (!strcasecmp(s, "OpenFlow11")) {
1080 return OFP11_VERSION;
1082 if (!strcasecmp(s, "OpenFlow12")) {
1083 return OFP12_VERSION;
1085 if (!strcasecmp(s, "OpenFlow13")) {
1086 return OFP13_VERSION;
1088 if (!strcasecmp(s, "OpenFlow14")) {
1089 return OFP14_VERSION;
1091 if (!strcasecmp(s, "OpenFlow15")) {
1092 return OFP15_VERSION;
1098 is_delimiter(unsigned char c)
1100 return isspace(c) || c == ',';
1104 ofputil_versions_from_string(const char *s)
1107 uint32_t bitmap = 0;
1114 if (is_delimiter(s[i])) {
1119 while (s[i + j] && !is_delimiter(s[i + j])) {
1122 key = xmemdup0(s + i, j);
1123 version = ofputil_version_from_string(key);
1125 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1128 bitmap |= 1u << version;
1136 ofputil_versions_from_strings(char ** const s, size_t count)
1138 uint32_t bitmap = 0;
1141 int version = ofputil_version_from_string(s[count]);
1143 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1145 bitmap |= 1u << version;
1153 ofputil_version_to_string(enum ofp_version ofp_version)
1155 switch (ofp_version) {
1157 return "OpenFlow10";
1159 return "OpenFlow11";
1161 return "OpenFlow12";
1163 return "OpenFlow13";
1165 return "OpenFlow14";
1167 return "OpenFlow15";
1174 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1176 switch (packet_in_format) {
1177 case NXPIF_OPENFLOW10:
1186 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1188 switch (packet_in_format) {
1189 case NXPIF_OPENFLOW10:
1190 return "openflow10";
1199 ofputil_packet_in_format_from_string(const char *s)
1201 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1202 : !strcmp(s, "nxm") ? NXPIF_NXM
1207 ofputil_format_version(struct ds *msg, enum ofp_version version)
1209 ds_put_format(msg, "0x%02x", version);
1213 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1215 ds_put_cstr(msg, ofputil_version_to_string(version));
1219 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1220 void (*format_version)(struct ds *msg,
1224 format_version(msg, raw_ctz(bitmap));
1225 bitmap = zero_rightmost_1bit(bitmap);
1227 ds_put_cstr(msg, ", ");
1233 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1235 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1239 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1241 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1245 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1246 uint32_t *allowed_versionsp)
1248 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1249 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1250 uint32_t allowed_versions;
1252 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1256 /* Only use the first 32-bit element of the bitmap as that is all the
1257 * current implementation supports. Subsequent elements are ignored which
1258 * should have no effect on session negotiation until Open vSwitch supports
1259 * wire-protocol versions greater than 31.
1261 allowed_versions = ntohl(bitmap[0]);
1263 if (allowed_versions & 1) {
1264 /* There's no OpenFlow version 0. */
1265 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1267 allowed_versions &= ~1u;
1270 if (!allowed_versions) {
1271 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1272 "version (between 0x01 and 0x1f)");
1276 *allowed_versionsp = allowed_versions;
1281 version_bitmap_from_version(uint8_t ofp_version)
1283 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1286 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1287 * the set of OpenFlow versions for which 'oh' announces support.
1289 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1290 * successful, and thus '*allowed_versions' is always initialized. However, it
1291 * returns false if 'oh' contains some data that could not be fully understood,
1292 * true if 'oh' was completely parsed. */
1294 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1299 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1300 ofpbuf_pull(&msg, sizeof *oh);
1302 *allowed_versions = version_bitmap_from_version(oh->version);
1304 const struct ofp_hello_elem_header *oheh;
1307 if (msg.size < sizeof *oheh) {
1312 len = ntohs(oheh->length);
1313 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1317 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1318 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1326 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1327 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1329 should_send_version_bitmap(uint32_t allowed_versions)
1331 return !is_pow2((allowed_versions >> 1) + 1);
1334 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1335 * versions in the 'allowed_versions' bitmaps and returns the message. */
1337 ofputil_encode_hello(uint32_t allowed_versions)
1339 enum ofp_version ofp_version;
1342 ofp_version = leftmost_1bit_idx(allowed_versions);
1343 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1345 if (should_send_version_bitmap(allowed_versions)) {
1346 struct ofp_hello_elem_header *oheh;
1349 map_len = sizeof allowed_versions;
1350 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1351 oheh->type = htons(OFPHET_VERSIONBITMAP);
1352 oheh->length = htons(map_len + sizeof *oheh);
1353 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1355 ofpmsg_update_length(msg);
1361 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1362 * protocol is 'current', at least partly transitions the protocol to 'want'.
1363 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1364 * connection if the switch processes the returned message correctly. (If
1365 * '*next != want' then the caller will have to iterate.)
1367 * If 'current == want', or if it is not possible to transition from 'current'
1368 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1369 * protocol versions), returns NULL and stores 'current' in '*next'. */
1371 ofputil_encode_set_protocol(enum ofputil_protocol current,
1372 enum ofputil_protocol want,
1373 enum ofputil_protocol *next)
1375 enum ofp_version cur_version, want_version;
1376 enum ofputil_protocol cur_base, want_base;
1377 bool cur_tid, want_tid;
1379 cur_version = ofputil_protocol_to_ofp_version(current);
1380 want_version = ofputil_protocol_to_ofp_version(want);
1381 if (cur_version != want_version) {
1386 cur_base = ofputil_protocol_to_base(current);
1387 want_base = ofputil_protocol_to_base(want);
1388 if (cur_base != want_base) {
1389 *next = ofputil_protocol_set_base(current, want_base);
1391 switch (want_base) {
1392 case OFPUTIL_P_OF10_NXM:
1393 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1395 case OFPUTIL_P_OF10_STD:
1396 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1398 case OFPUTIL_P_OF11_STD:
1399 case OFPUTIL_P_OF12_OXM:
1400 case OFPUTIL_P_OF13_OXM:
1401 case OFPUTIL_P_OF14_OXM:
1402 case OFPUTIL_P_OF15_OXM:
1403 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1404 * verified above that we're not trying to change versions. */
1407 case OFPUTIL_P_OF10_STD_TID:
1408 case OFPUTIL_P_OF10_NXM_TID:
1413 cur_tid = (current & OFPUTIL_P_TID) != 0;
1414 want_tid = (want & OFPUTIL_P_TID) != 0;
1415 if (cur_tid != want_tid) {
1416 *next = ofputil_protocol_set_tid(current, want_tid);
1417 return ofputil_make_flow_mod_table_id(want_tid);
1420 ovs_assert(current == want);
1426 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1427 * format to 'nxff'. */
1429 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1431 struct nx_set_flow_format *sff;
1434 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1436 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1437 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1438 sff->format = htonl(nxff);
1443 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1445 enum ofputil_protocol
1446 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1448 switch (flow_format) {
1449 case NXFF_OPENFLOW10:
1450 return OFPUTIL_P_OF10_STD;
1453 return OFPUTIL_P_OF10_NXM;
1460 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1462 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1464 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1467 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1470 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1472 switch (flow_format) {
1473 case NXFF_OPENFLOW10:
1474 return "openflow10";
1483 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1484 enum nx_packet_in_format packet_in_format)
1486 struct nx_set_packet_in_format *spif;
1489 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1490 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1491 spif->format = htonl(packet_in_format);
1496 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1497 * extension on or off (according to 'flow_mod_table_id'). */
1499 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1501 struct nx_flow_mod_table_id *nfmti;
1504 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1505 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1506 nfmti->set = flow_mod_table_id;
1510 struct ofputil_flow_mod_flag {
1512 enum ofp_version min_version, max_version;
1513 enum ofputil_flow_mod_flags flag;
1516 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1517 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1518 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1519 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1521 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1522 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1523 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1528 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1529 enum ofp_flow_mod_command command,
1530 enum ofp_version version,
1531 enum ofputil_flow_mod_flags *flagsp)
1533 uint16_t raw_flags = ntohs(raw_flags_);
1534 const struct ofputil_flow_mod_flag *f;
1537 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1538 if (raw_flags & f->raw_flag
1539 && version >= f->min_version
1540 && (!f->max_version || version <= f->max_version)) {
1541 raw_flags &= ~f->raw_flag;
1546 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1549 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1550 * resets counters. */
1551 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1552 && command == OFPFC_ADD) {
1553 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1556 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1560 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1561 enum ofp_version version)
1563 const struct ofputil_flow_mod_flag *f;
1567 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1569 && version >= f->min_version
1570 && (!f->max_version || version <= f->max_version)) {
1571 raw_flags |= f->raw_flag;
1575 return htons(raw_flags);
1578 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1579 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1582 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1583 * The caller must initialize 'ofpacts' and retains ownership of it.
1584 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1586 * Does not validate the flow_mod actions. The caller should do that, with
1587 * ofpacts_check(). */
1589 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1590 const struct ofp_header *oh,
1591 enum ofputil_protocol protocol,
1592 struct ofpbuf *ofpacts,
1593 ofp_port_t max_port, uint8_t max_table)
1600 /* Ignored for non-delete actions */
1601 fm->delete_reason = OFPRR_DELETE;
1603 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1604 raw = ofpraw_pull_assert(&b);
1605 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1606 /* Standard OpenFlow 1.1+ flow_mod. */
1607 const struct ofp11_flow_mod *ofm;
1609 ofm = ofpbuf_pull(&b, sizeof *ofm);
1611 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1616 /* Translate the message. */
1617 fm->priority = ntohs(ofm->priority);
1618 if (ofm->command == OFPFC_ADD
1619 || (oh->version == OFP11_VERSION
1620 && (ofm->command == OFPFC_MODIFY ||
1621 ofm->command == OFPFC_MODIFY_STRICT)
1622 && ofm->cookie_mask == htonll(0))) {
1623 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1624 * not match on the cookie is treated as an "add" if there is no
1626 fm->cookie = htonll(0);
1627 fm->cookie_mask = htonll(0);
1628 fm->new_cookie = ofm->cookie;
1630 fm->cookie = ofm->cookie;
1631 fm->cookie_mask = ofm->cookie_mask;
1632 fm->new_cookie = OVS_BE64_MAX;
1634 fm->modify_cookie = false;
1635 fm->command = ofm->command;
1639 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1640 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1641 fm->table_id = ofm->table_id;
1642 if (fm->table_id == OFPTT_ALL
1643 && (oh->version == OFP11_VERSION
1644 || (ofm->command != OFPFC_DELETE &&
1645 ofm->command != OFPFC_DELETE_STRICT))) {
1646 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1649 fm->idle_timeout = ntohs(ofm->idle_timeout);
1650 fm->hard_timeout = ntohs(ofm->hard_timeout);
1651 if (oh->version >= OFP14_VERSION && ofm->command == OFPFC_ADD) {
1652 fm->importance = ntohs(ofm->importance);
1656 fm->buffer_id = ntohl(ofm->buffer_id);
1657 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1662 fm->out_group = (ofm->command == OFPFC_DELETE ||
1663 ofm->command == OFPFC_DELETE_STRICT
1664 ? ntohl(ofm->out_group)
1666 raw_flags = ofm->flags;
1670 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1671 /* Standard OpenFlow 1.0 flow_mod. */
1672 const struct ofp10_flow_mod *ofm;
1674 /* Get the ofp10_flow_mod. */
1675 ofm = ofpbuf_pull(&b, sizeof *ofm);
1677 /* Translate the rule. */
1678 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1679 ofputil_normalize_match(&fm->match);
1681 /* OpenFlow 1.0 says that exact-match rules have to have the
1682 * highest possible priority. */
1683 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1684 ? ntohs(ofm->priority)
1687 /* Translate the message. */
1688 command = ntohs(ofm->command);
1689 fm->cookie = htonll(0);
1690 fm->cookie_mask = htonll(0);
1691 fm->new_cookie = ofm->cookie;
1692 fm->idle_timeout = ntohs(ofm->idle_timeout);
1693 fm->hard_timeout = ntohs(ofm->hard_timeout);
1695 fm->buffer_id = ntohl(ofm->buffer_id);
1696 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1697 fm->out_group = OFPG_ANY;
1698 raw_flags = ofm->flags;
1699 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1700 /* Nicira extended flow_mod. */
1701 const struct nx_flow_mod *nfm;
1703 /* Dissect the message. */
1704 nfm = ofpbuf_pull(&b, sizeof *nfm);
1705 error = nx_pull_match(&b, ntohs(nfm->match_len),
1706 &fm->match, &fm->cookie, &fm->cookie_mask);
1711 /* Translate the message. */
1712 command = ntohs(nfm->command);
1713 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1714 /* Flow additions may only set a new cookie, not match an
1715 * existing cookie. */
1716 return OFPERR_NXBRC_NXM_INVALID;
1718 fm->priority = ntohs(nfm->priority);
1719 fm->new_cookie = nfm->cookie;
1720 fm->idle_timeout = ntohs(nfm->idle_timeout);
1721 fm->hard_timeout = ntohs(nfm->hard_timeout);
1723 fm->buffer_id = ntohl(nfm->buffer_id);
1724 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1725 fm->out_group = OFPG_ANY;
1726 raw_flags = nfm->flags;
1731 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1732 if (protocol & OFPUTIL_P_TID) {
1733 fm->command = command & 0xff;
1734 fm->table_id = command >> 8;
1736 if (command > 0xff) {
1737 VLOG_WARN_RL(&bad_ofmsg_rl, "flow_mod has explicit table_id "
1738 "but flow_mod_table_id extension is not enabled");
1740 fm->command = command;
1741 fm->table_id = 0xff;
1745 if (fm->command > OFPFC_DELETE_STRICT) {
1746 return OFPERR_OFPFMFC_BAD_COMMAND;
1749 error = ofpacts_pull_openflow_instructions(&b, b.size,
1750 oh->version, ofpacts);
1754 fm->ofpacts = ofpacts->data;
1755 fm->ofpacts_len = ofpacts->size;
1757 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1758 oh->version, &fm->flags);
1763 if (fm->flags & OFPUTIL_FF_EMERG) {
1764 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1765 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1767 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1768 * or hard_timeout is nonzero. Otherwise, there is no good error
1769 * code, so just state that the flow table is full. */
1770 return (fm->hard_timeout || fm->idle_timeout
1771 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1772 : OFPERR_OFPFMFC_TABLE_FULL);
1775 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1776 &fm->match.flow, max_port,
1777 fm->table_id, max_table, protocol);
1781 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1782 struct ofpbuf *bands)
1784 const struct ofp13_meter_band_header *ombh;
1785 struct ofputil_meter_band *mb;
1788 ombh = ofpbuf_try_pull(msg, len);
1790 return OFPERR_OFPBRC_BAD_LEN;
1793 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1794 size_t ombh_len = ntohs(ombh->len);
1795 /* All supported band types have the same length. */
1796 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1797 return OFPERR_OFPBRC_BAD_LEN;
1799 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1800 mb->type = ntohs(ombh->type);
1801 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1802 return OFPERR_OFPMMFC_BAD_BAND;
1804 mb->rate = ntohl(ombh->rate);
1805 mb->burst_size = ntohl(ombh->burst_size);
1806 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1807 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1810 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1811 (char *) ombh + ombh_len);
1814 return OFPERR_OFPBRC_BAD_LEN;
1821 ofputil_decode_meter_mod(const struct ofp_header *oh,
1822 struct ofputil_meter_mod *mm,
1823 struct ofpbuf *bands)
1825 const struct ofp13_meter_mod *omm;
1828 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1829 ofpraw_pull_assert(&b);
1830 omm = ofpbuf_pull(&b, sizeof *omm);
1832 /* Translate the message. */
1833 mm->command = ntohs(omm->command);
1834 if (mm->command != OFPMC13_ADD &&
1835 mm->command != OFPMC13_MODIFY &&
1836 mm->command != OFPMC13_DELETE) {
1837 return OFPERR_OFPMMFC_BAD_COMMAND;
1839 mm->meter.meter_id = ntohl(omm->meter_id);
1841 if (mm->command == OFPMC13_DELETE) {
1842 mm->meter.flags = 0;
1843 mm->meter.n_bands = 0;
1844 mm->meter.bands = NULL;
1848 mm->meter.flags = ntohs(omm->flags);
1849 if (mm->meter.flags & OFPMF13_KBPS &&
1850 mm->meter.flags & OFPMF13_PKTPS) {
1851 return OFPERR_OFPMMFC_BAD_FLAGS;
1853 mm->meter.bands = bands->data;
1855 error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
1864 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1866 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1867 *meter_id = ntohl(omr->meter_id);
1871 ofputil_encode_meter_request(enum ofp_version ofp_version,
1872 enum ofputil_meter_request_type type,
1880 case OFPUTIL_METER_CONFIG:
1881 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1883 case OFPUTIL_METER_STATS:
1884 raw = OFPRAW_OFPST13_METER_REQUEST;
1887 case OFPUTIL_METER_FEATURES:
1888 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1892 msg = ofpraw_alloc(raw, ofp_version, 0);
1894 if (type != OFPUTIL_METER_FEATURES) {
1895 struct ofp13_meter_multipart_request *omr;
1896 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1897 omr->meter_id = htonl(meter_id);
1903 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1908 for (n = 0; n < n_bands; ++n) {
1909 /* Currently all band types have same size. */
1910 struct ofp13_meter_band_dscp_remark *ombh;
1911 size_t ombh_len = sizeof *ombh;
1913 ombh = ofpbuf_put_zeros(msg, ombh_len);
1915 ombh->type = htons(mb->type);
1916 ombh->len = htons(ombh_len);
1917 ombh->rate = htonl(mb->rate);
1918 ombh->burst_size = htonl(mb->burst_size);
1919 ombh->prec_level = mb->prec_level;
1925 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1927 ofputil_append_meter_config(struct ovs_list *replies,
1928 const struct ofputil_meter_config *mc)
1930 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1931 size_t start_ofs = msg->size;
1932 struct ofp13_meter_config *reply;
1934 ofpbuf_put_uninit(msg, sizeof *reply);
1935 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1937 reply = ofpbuf_at_assert(msg, start_ofs, sizeof *reply);
1938 reply->flags = htons(mc->flags);
1939 reply->meter_id = htonl(mc->meter_id);
1940 reply->length = htons(msg->size - start_ofs);
1942 ofpmp_postappend(replies, start_ofs);
1945 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1947 ofputil_append_meter_stats(struct ovs_list *replies,
1948 const struct ofputil_meter_stats *ms)
1950 struct ofp13_meter_stats *reply;
1954 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
1955 reply = ofpmp_append(replies, len);
1957 reply->meter_id = htonl(ms->meter_id);
1958 reply->len = htons(len);
1959 memset(reply->pad, 0, sizeof reply->pad);
1960 reply->flow_count = htonl(ms->flow_count);
1961 reply->packet_in_count = htonll(ms->packet_in_count);
1962 reply->byte_in_count = htonll(ms->byte_in_count);
1963 reply->duration_sec = htonl(ms->duration_sec);
1964 reply->duration_nsec = htonl(ms->duration_nsec);
1966 for (n = 0; n < ms->n_bands; ++n) {
1967 const struct ofputil_meter_band_stats *src = &ms->bands[n];
1968 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
1970 dst->packet_band_count = htonll(src->packet_count);
1971 dst->byte_band_count = htonll(src->byte_count);
1975 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
1976 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
1977 * 'bands'. The caller must have initialized 'bands' and retains ownership of
1978 * it across the call.
1980 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
1981 * message. Calling this function multiple times for a single 'msg' iterates
1982 * through the replies. 'bands' is cleared for each reply.
1984 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1985 * otherwise a positive errno value. */
1987 ofputil_decode_meter_config(struct ofpbuf *msg,
1988 struct ofputil_meter_config *mc,
1989 struct ofpbuf *bands)
1991 const struct ofp13_meter_config *omc;
1994 /* Pull OpenFlow headers for the first call. */
1996 ofpraw_pull_assert(msg);
2003 omc = ofpbuf_try_pull(msg, sizeof *omc);
2005 VLOG_WARN_RL(&bad_ofmsg_rl,
2006 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2008 return OFPERR_OFPBRC_BAD_LEN;
2011 ofpbuf_clear(bands);
2012 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2013 &mc->n_bands, bands);
2017 mc->meter_id = ntohl(omc->meter_id);
2018 mc->flags = ntohs(omc->flags);
2019 mc->bands = bands->data;
2025 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2026 struct ofpbuf *bands)
2028 const struct ofp13_meter_band_stats *ombs;
2029 struct ofputil_meter_band_stats *mbs;
2032 ombs = ofpbuf_try_pull(msg, len);
2034 return OFPERR_OFPBRC_BAD_LEN;
2037 n = len / sizeof *ombs;
2038 if (len != n * sizeof *ombs) {
2039 return OFPERR_OFPBRC_BAD_LEN;
2042 mbs = ofpbuf_put_uninit(bands, len);
2044 for (i = 0; i < n; ++i) {
2045 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2046 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2052 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2053 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2054 * decoded into 'bands'.
2056 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2057 * message. Calling this function multiple times for a single 'msg' iterates
2058 * through the replies. 'bands' is cleared for each reply.
2060 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2061 * otherwise a positive errno value. */
2063 ofputil_decode_meter_stats(struct ofpbuf *msg,
2064 struct ofputil_meter_stats *ms,
2065 struct ofpbuf *bands)
2067 const struct ofp13_meter_stats *oms;
2070 /* Pull OpenFlow headers for the first call. */
2072 ofpraw_pull_assert(msg);
2079 oms = ofpbuf_try_pull(msg, sizeof *oms);
2081 VLOG_WARN_RL(&bad_ofmsg_rl,
2082 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2084 return OFPERR_OFPBRC_BAD_LEN;
2087 ofpbuf_clear(bands);
2088 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2089 &ms->n_bands, bands);
2093 ms->meter_id = ntohl(oms->meter_id);
2094 ms->flow_count = ntohl(oms->flow_count);
2095 ms->packet_in_count = ntohll(oms->packet_in_count);
2096 ms->byte_in_count = ntohll(oms->byte_in_count);
2097 ms->duration_sec = ntohl(oms->duration_sec);
2098 ms->duration_nsec = ntohl(oms->duration_nsec);
2099 ms->bands = bands->data;
2105 ofputil_decode_meter_features(const struct ofp_header *oh,
2106 struct ofputil_meter_features *mf)
2108 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2110 mf->max_meters = ntohl(omf->max_meter);
2111 mf->band_types = ntohl(omf->band_types);
2112 mf->capabilities = ntohl(omf->capabilities);
2113 mf->max_bands = omf->max_bands;
2114 mf->max_color = omf->max_color;
2118 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2119 const struct ofp_header *request)
2121 struct ofpbuf *reply;
2122 struct ofp13_meter_features *omf;
2124 reply = ofpraw_alloc_stats_reply(request, 0);
2125 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2127 omf->max_meter = htonl(mf->max_meters);
2128 omf->band_types = htonl(mf->band_types);
2129 omf->capabilities = htonl(mf->capabilities);
2130 omf->max_bands = mf->max_bands;
2131 omf->max_color = mf->max_color;
2137 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2138 const struct ofputil_meter_mod *mm)
2142 struct ofp13_meter_mod *omm;
2144 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2145 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2146 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2147 omm->command = htons(mm->command);
2148 if (mm->command != OFPMC13_DELETE) {
2149 omm->flags = htons(mm->meter.flags);
2151 omm->meter_id = htonl(mm->meter.meter_id);
2153 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2155 ofpmsg_update_length(msg);
2160 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2161 enum ofputil_protocol protocol)
2163 return htons(protocol & OFPUTIL_P_TID
2164 ? (fm->command & 0xff) | (fm->table_id << 8)
2168 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2169 * 'protocol' and returns the message. */
2171 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2172 enum ofputil_protocol protocol)
2174 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2175 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2179 case OFPUTIL_P_OF11_STD:
2180 case OFPUTIL_P_OF12_OXM:
2181 case OFPUTIL_P_OF13_OXM:
2182 case OFPUTIL_P_OF14_OXM:
2183 case OFPUTIL_P_OF15_OXM: {
2184 struct ofp11_flow_mod *ofm;
2187 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2188 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2189 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2190 if ((protocol == OFPUTIL_P_OF11_STD
2191 && (fm->command == OFPFC_MODIFY ||
2192 fm->command == OFPFC_MODIFY_STRICT)
2193 && fm->cookie_mask == htonll(0))
2194 || fm->command == OFPFC_ADD) {
2195 ofm->cookie = fm->new_cookie;
2197 ofm->cookie = fm->cookie & fm->cookie_mask;
2199 ofm->cookie_mask = fm->cookie_mask;
2200 if (fm->table_id != OFPTT_ALL
2201 || (protocol != OFPUTIL_P_OF11_STD
2202 && (fm->command == OFPFC_DELETE ||
2203 fm->command == OFPFC_DELETE_STRICT))) {
2204 ofm->table_id = fm->table_id;
2208 ofm->command = fm->command;
2209 ofm->idle_timeout = htons(fm->idle_timeout);
2210 ofm->hard_timeout = htons(fm->hard_timeout);
2211 ofm->priority = htons(fm->priority);
2212 ofm->buffer_id = htonl(fm->buffer_id);
2213 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2214 ofm->out_group = htonl(fm->out_group);
2215 ofm->flags = raw_flags;
2216 if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
2217 ofm->importance = htons(fm->importance);
2219 ofm->importance = 0;
2221 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2222 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2227 case OFPUTIL_P_OF10_STD:
2228 case OFPUTIL_P_OF10_STD_TID: {
2229 struct ofp10_flow_mod *ofm;
2231 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2233 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2234 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2235 ofm->cookie = fm->new_cookie;
2236 ofm->command = ofputil_tid_command(fm, protocol);
2237 ofm->idle_timeout = htons(fm->idle_timeout);
2238 ofm->hard_timeout = htons(fm->hard_timeout);
2239 ofm->priority = htons(fm->priority);
2240 ofm->buffer_id = htonl(fm->buffer_id);
2241 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2242 ofm->flags = raw_flags;
2243 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2248 case OFPUTIL_P_OF10_NXM:
2249 case OFPUTIL_P_OF10_NXM_TID: {
2250 struct nx_flow_mod *nfm;
2253 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2254 NXM_TYPICAL_LEN + fm->ofpacts_len);
2255 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2256 nfm->command = ofputil_tid_command(fm, protocol);
2257 nfm->cookie = fm->new_cookie;
2258 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2260 nfm->idle_timeout = htons(fm->idle_timeout);
2261 nfm->hard_timeout = htons(fm->hard_timeout);
2262 nfm->priority = htons(fm->priority);
2263 nfm->buffer_id = htonl(fm->buffer_id);
2264 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2265 nfm->flags = raw_flags;
2266 nfm->match_len = htons(match_len);
2267 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2276 ofpmsg_update_length(msg);
2281 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2282 const struct ofp10_flow_stats_request *ofsr,
2285 fsr->aggregate = aggregate;
2286 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2287 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2288 fsr->out_group = OFPG_ANY;
2289 fsr->table_id = ofsr->table_id;
2290 fsr->cookie = fsr->cookie_mask = htonll(0);
2296 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2297 struct ofpbuf *b, bool aggregate)
2299 const struct ofp11_flow_stats_request *ofsr;
2302 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2303 fsr->aggregate = aggregate;
2304 fsr->table_id = ofsr->table_id;
2305 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2309 fsr->out_group = ntohl(ofsr->out_group);
2310 fsr->cookie = ofsr->cookie;
2311 fsr->cookie_mask = ofsr->cookie_mask;
2312 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2321 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2322 struct ofpbuf *b, bool aggregate)
2324 const struct nx_flow_stats_request *nfsr;
2327 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2328 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2329 &fsr->cookie, &fsr->cookie_mask);
2334 return OFPERR_OFPBRC_BAD_LEN;
2337 fsr->aggregate = aggregate;
2338 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2339 fsr->out_group = OFPG_ANY;
2340 fsr->table_id = nfsr->table_id;
2345 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2346 * 'port' and 'queue', suitable for OpenFlow version 'version'.
2348 * 'queue' is honored only for OpenFlow 1.4 and later; older versions always
2349 * request all queues. */
2351 ofputil_encode_queue_get_config_request(enum ofp_version version,
2355 struct ofpbuf *request;
2357 if (version == OFP10_VERSION) {
2358 struct ofp10_queue_get_config_request *qgcr10;
2360 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2362 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2363 qgcr10->port = htons(ofp_to_u16(port));
2364 } else if (version < OFP14_VERSION) {
2365 struct ofp11_queue_get_config_request *qgcr11;
2367 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2369 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2370 qgcr11->port = ofputil_port_to_ofp11(port);
2372 struct ofp14_queue_desc_request *qdr14;
2374 request = ofpraw_alloc(OFPRAW_OFPST14_QUEUE_DESC_REQUEST,
2376 qdr14 = ofpbuf_put_zeros(request, sizeof *qdr14);
2377 qdr14->port = ofputil_port_to_ofp11(port);
2378 qdr14->queue = htonl(queue);
2384 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2385 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2388 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2389 ofp_port_t *port, uint32_t *queue)
2391 const struct ofp10_queue_get_config_request *qgcr10;
2392 const struct ofp11_queue_get_config_request *qgcr11;
2393 const struct ofp14_queue_desc_request *qdr14;
2397 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2398 raw = ofpraw_pull_assert(&b);
2400 switch ((int) raw) {
2401 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2403 *port = u16_to_ofp(ntohs(qgcr10->port));
2407 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2410 enum ofperr error = ofputil_port_from_ofp11(qgcr11->port, port);
2411 if (error || *port == OFPP_ANY) {
2416 case OFPRAW_OFPST14_QUEUE_DESC_REQUEST:
2418 *queue = ntohl(qdr14->queue);
2419 return ofputil_port_from_ofp11(qdr14->port, port);
2425 return (ofp_to_u16(*port) < ofp_to_u16(OFPP_MAX)
2427 : OFPERR_OFPQOFC_BAD_PORT);
2430 /* Constructs and returns the beginning of a reply to
2431 * OFPT_QUEUE_GET_CONFIG_REQUEST or OFPMP_QUEUE_DESC request 'oh'. The caller
2432 * may append information about individual queues with
2433 * ofputil_append_queue_get_config_reply(). */
2435 ofputil_start_queue_get_config_reply(const struct ofp_header *request,
2436 struct ovs_list *replies)
2438 struct ofpbuf *reply;
2443 error = ofputil_decode_queue_get_config_request(request, &port, &queue);
2446 enum ofpraw raw = ofpraw_decode_assert(request);
2447 switch ((int) raw) {
2448 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2449 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2451 struct ofp10_queue_get_config_reply *qgcr10
2452 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2453 qgcr10->port = htons(ofp_to_u16(port));
2456 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2457 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2459 struct ofp11_queue_get_config_reply *qgcr11
2460 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2461 qgcr11->port = ofputil_port_to_ofp11(port);
2464 case OFPRAW_OFPST14_QUEUE_DESC_REQUEST:
2465 reply = ofpraw_alloc_stats_reply(request, 0);
2473 list_push_back(replies, &reply->list_node);
2477 put_ofp10_queue_rate(struct ofpbuf *reply,
2478 enum ofp10_queue_properties property, uint16_t rate)
2480 if (rate != UINT16_MAX) {
2481 struct ofp10_queue_prop_rate *oqpr;
2483 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2484 oqpr->prop_header.property = htons(property);
2485 oqpr->prop_header.len = htons(sizeof *oqpr);
2486 oqpr->rate = htons(rate);
2491 put_ofp14_queue_rate(struct ofpbuf *reply,
2492 enum ofp14_queue_desc_prop_type type, uint16_t rate)
2494 if (rate != UINT16_MAX) {
2495 ofpprop_put_u16(reply, type, rate);
2500 ofputil_append_queue_get_config_reply(const struct ofputil_queue_config *qc,
2501 struct ovs_list *replies)
2503 enum ofp_version ofp_version = ofpmp_version(replies);
2504 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2505 size_t start_ofs = reply->size;
2509 if (ofp_version < OFP14_VERSION) {
2510 if (ofp_version < OFP12_VERSION) {
2511 struct ofp10_packet_queue *opq10;
2513 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2514 opq10->queue_id = htonl(qc->queue);
2515 len_ofs = (char *) &opq10->len - (char *) reply->data;
2517 struct ofp12_packet_queue *opq12;
2519 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2520 opq12->port = ofputil_port_to_ofp11(qc->port);
2521 opq12->queue_id = htonl(qc->queue);
2522 len_ofs = (char *) &opq12->len - (char *) reply->data;
2525 put_ofp10_queue_rate(reply, OFPQT10_MIN_RATE, qc->min_rate);
2526 put_ofp10_queue_rate(reply, OFPQT11_MAX_RATE, qc->max_rate);
2528 struct ofp14_queue_desc *oqd = ofpbuf_put_zeros(reply, sizeof *oqd);
2529 oqd->port_no = ofputil_port_to_ofp11(qc->port);
2530 oqd->queue_id = htonl(qc->queue);
2531 len_ofs = (char *) &oqd->len - (char *) reply->data;
2532 put_ofp14_queue_rate(reply, OFPQDPT14_MIN_RATE, qc->min_rate);
2533 put_ofp14_queue_rate(reply, OFPQDPT14_MAX_RATE, qc->max_rate);
2536 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2537 *len = htons(reply->size - start_ofs);
2539 if (ofp_version >= OFP14_VERSION) {
2540 ofpmp_postappend(replies, start_ofs);
2545 parse_ofp10_queue_rate(const struct ofp10_queue_prop_header *hdr,
2548 const struct ofp10_queue_prop_rate *oqpr;
2550 if (hdr->len == htons(sizeof *oqpr)) {
2551 oqpr = (const struct ofp10_queue_prop_rate *) hdr;
2552 *rate = ntohs(oqpr->rate);
2555 return OFPERR_OFPBRC_BAD_LEN;
2560 ofputil_pull_queue_get_config_reply10(struct ofpbuf *msg,
2561 struct ofputil_queue_config *queue)
2563 const struct ofp_header *oh = msg->header;
2564 unsigned int opq_len; /* Length of protocol-specific queue header. */
2565 unsigned int len; /* Total length of queue + properties. */
2567 /* Obtain the port number from the message header. */
2568 if (oh->version == OFP10_VERSION) {
2569 const struct ofp10_queue_get_config_reply *oqgcr10 = msg->msg;
2570 queue->port = u16_to_ofp(ntohs(oqgcr10->port));
2572 const struct ofp11_queue_get_config_reply *oqgcr11 = msg->msg;
2573 enum ofperr error = ofputil_port_from_ofp11(oqgcr11->port,
2580 /* Pull off the queue header and get the queue number and length. */
2581 if (oh->version < OFP12_VERSION) {
2582 const struct ofp10_packet_queue *opq10;
2583 opq10 = ofpbuf_try_pull(msg, sizeof *opq10);
2585 return OFPERR_OFPBRC_BAD_LEN;
2587 queue->queue = ntohl(opq10->queue_id);
2588 len = ntohs(opq10->len);
2589 opq_len = sizeof *opq10;
2591 const struct ofp12_packet_queue *opq12;
2592 opq12 = ofpbuf_try_pull(msg, sizeof *opq12);
2594 return OFPERR_OFPBRC_BAD_LEN;
2596 queue->queue = ntohl(opq12->queue_id);
2597 len = ntohs(opq12->len);
2598 opq_len = sizeof *opq12;
2602 if (len < opq_len || len > msg->size + opq_len || len % 8) {
2603 return OFPERR_OFPBRC_BAD_LEN;
2607 /* Pull properties. The format of these properties differs from used in
2608 * OF1.4+ so we can't use the common property functions. */
2610 const struct ofp10_queue_prop_header *hdr;
2611 unsigned int property;
2612 unsigned int prop_len;
2613 enum ofperr error = 0;
2615 hdr = ofpbuf_at_assert(msg, 0, sizeof *hdr);
2616 prop_len = ntohs(hdr->len);
2617 if (prop_len < sizeof *hdr || prop_len > msg->size || prop_len % 8) {
2618 return OFPERR_OFPBRC_BAD_LEN;
2621 property = ntohs(hdr->property);
2623 case OFPQT10_MIN_RATE:
2624 error = parse_ofp10_queue_rate(hdr, &queue->min_rate);
2627 case OFPQT11_MAX_RATE:
2628 error = parse_ofp10_queue_rate(hdr, &queue->max_rate);
2632 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2639 ofpbuf_pull(msg, prop_len);
2646 ofputil_pull_queue_get_config_reply14(struct ofpbuf *msg,
2647 struct ofputil_queue_config *queue)
2649 struct ofp14_queue_desc *oqd14 = ofpbuf_try_pull(msg, sizeof *oqd14);
2651 return OFPERR_OFPBRC_BAD_LEN;
2653 enum ofperr error = ofputil_port_from_ofp11(oqd14->port_no, &queue->port);
2657 queue->queue = ntohl(oqd14->queue_id);
2660 unsigned int len = ntohs(oqd14->len);
2661 if (len < sizeof *oqd14 || len > msg->size + sizeof *oqd14 || len % 8) {
2662 return OFPERR_OFPBRC_BAD_LEN;
2664 len -= sizeof *oqd14;
2666 struct ofpbuf properties;
2667 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
2668 while (properties.size > 0) {
2669 struct ofpbuf payload;
2672 error = ofpprop_pull(&properties, &payload, &type);
2678 case OFPQDPT14_MIN_RATE:
2679 error = ofpprop_parse_u16(&payload, &queue->min_rate);
2682 case OFPQDPT14_MAX_RATE:
2683 error = ofpprop_parse_u16(&payload, &queue->max_rate);
2687 error = OFPPROP_UNKNOWN(true, "queue desc", type);
2699 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2700 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2701 * must already have pulled off the main header.
2703 * This function returns EOF if the last queue has already been decoded, 0 if a
2704 * queue was successfully decoded into '*queue', or an ofperr if there was a
2705 * problem decoding 'reply'. */
2707 ofputil_pull_queue_get_config_reply(struct ofpbuf *msg,
2708 struct ofputil_queue_config *queue)
2712 /* Pull OpenFlow header. */
2713 raw = ofpraw_pull_assert(msg);
2715 /* Pull protocol-specific ofp_queue_get_config_reply header (OF1.4
2716 * doesn't have one at all). */
2717 if (raw == OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY) {
2718 ofpbuf_pull(msg, sizeof(struct ofp10_queue_get_config_reply));
2719 } else if (raw == OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY) {
2720 ofpbuf_pull(msg, sizeof(struct ofp11_queue_get_config_reply));
2722 ovs_assert(raw == OFPRAW_OFPST14_QUEUE_DESC_REPLY);
2725 raw = ofpraw_decode_assert(msg->header);
2728 queue->min_rate = UINT16_MAX;
2729 queue->max_rate = UINT16_MAX;
2733 } else if (raw == OFPRAW_OFPST14_QUEUE_DESC_REPLY) {
2734 return ofputil_pull_queue_get_config_reply14(msg, queue);
2736 return ofputil_pull_queue_get_config_reply10(msg, queue);
2740 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2741 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2742 * successful, otherwise an OpenFlow error code. */
2744 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2745 const struct ofp_header *oh)
2750 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2751 raw = ofpraw_pull_assert(&b);
2752 switch ((int) raw) {
2753 case OFPRAW_OFPST10_FLOW_REQUEST:
2754 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2756 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2757 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2759 case OFPRAW_OFPST11_FLOW_REQUEST:
2760 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2762 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2763 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2765 case OFPRAW_NXST_FLOW_REQUEST:
2766 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2768 case OFPRAW_NXST_AGGREGATE_REQUEST:
2769 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2772 /* Hey, the caller lied. */
2777 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2778 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2779 * 'protocol', and returns the message. */
2781 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2782 enum ofputil_protocol protocol)
2788 case OFPUTIL_P_OF11_STD:
2789 case OFPUTIL_P_OF12_OXM:
2790 case OFPUTIL_P_OF13_OXM:
2791 case OFPUTIL_P_OF14_OXM:
2792 case OFPUTIL_P_OF15_OXM: {
2793 struct ofp11_flow_stats_request *ofsr;
2795 raw = (fsr->aggregate
2796 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2797 : OFPRAW_OFPST11_FLOW_REQUEST);
2798 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2799 ofputil_match_typical_len(protocol));
2800 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2801 ofsr->table_id = fsr->table_id;
2802 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2803 ofsr->out_group = htonl(fsr->out_group);
2804 ofsr->cookie = fsr->cookie;
2805 ofsr->cookie_mask = fsr->cookie_mask;
2806 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2810 case OFPUTIL_P_OF10_STD:
2811 case OFPUTIL_P_OF10_STD_TID: {
2812 struct ofp10_flow_stats_request *ofsr;
2814 raw = (fsr->aggregate
2815 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2816 : OFPRAW_OFPST10_FLOW_REQUEST);
2817 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2818 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2819 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2820 ofsr->table_id = fsr->table_id;
2821 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2825 case OFPUTIL_P_OF10_NXM:
2826 case OFPUTIL_P_OF10_NXM_TID: {
2827 struct nx_flow_stats_request *nfsr;
2830 raw = (fsr->aggregate
2831 ? OFPRAW_NXST_AGGREGATE_REQUEST
2832 : OFPRAW_NXST_FLOW_REQUEST);
2833 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2834 ofpbuf_put_zeros(msg, sizeof *nfsr);
2835 match_len = nx_put_match(msg, &fsr->match,
2836 fsr->cookie, fsr->cookie_mask);
2839 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2840 nfsr->match_len = htons(match_len);
2841 nfsr->table_id = fsr->table_id;
2852 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2853 * ofputil_flow_stats in 'fs'.
2855 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2856 * OpenFlow message. Calling this function multiple times for a single 'msg'
2857 * iterates through the replies. The caller must initially leave 'msg''s layer
2858 * pointers null and not modify them between calls.
2860 * Most switches don't send the values needed to populate fs->idle_age and
2861 * fs->hard_age, so those members will usually be set to 0. If the switch from
2862 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2863 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2864 * 'idle_age' and 'hard_age' members in 'fs'.
2866 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2867 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2868 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2870 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2871 * otherwise a positive errno value. */
2873 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2875 bool flow_age_extension,
2876 struct ofpbuf *ofpacts)
2878 const struct ofp_header *oh;
2879 size_t instructions_len;
2883 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2884 : ofpraw_pull(&raw, msg));
2892 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2893 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2894 const struct ofp11_flow_stats *ofs;
2896 uint16_t padded_match_len;
2898 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2900 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2901 "bytes at end", msg->size);
2905 length = ntohs(ofs->length);
2906 if (length < sizeof *ofs) {
2907 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2908 "length %"PRIuSIZE, length);
2912 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2913 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2916 instructions_len = length - sizeof *ofs - padded_match_len;
2918 fs->priority = ntohs(ofs->priority);
2919 fs->table_id = ofs->table_id;
2920 fs->duration_sec = ntohl(ofs->duration_sec);
2921 fs->duration_nsec = ntohl(ofs->duration_nsec);
2922 fs->idle_timeout = ntohs(ofs->idle_timeout);
2923 fs->hard_timeout = ntohs(ofs->hard_timeout);
2924 if (oh->version >= OFP14_VERSION) {
2925 fs->importance = ntohs(ofs->importance);
2929 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2930 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2940 fs->cookie = ofs->cookie;
2941 fs->packet_count = ntohll(ofs->packet_count);
2942 fs->byte_count = ntohll(ofs->byte_count);
2943 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2944 const struct ofp10_flow_stats *ofs;
2947 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2949 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2950 "bytes at end", msg->size);
2954 length = ntohs(ofs->length);
2955 if (length < sizeof *ofs) {
2956 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2957 "length %"PRIuSIZE, length);
2960 instructions_len = length - sizeof *ofs;
2962 fs->cookie = get_32aligned_be64(&ofs->cookie);
2963 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2964 fs->priority = ntohs(ofs->priority);
2965 fs->table_id = ofs->table_id;
2966 fs->duration_sec = ntohl(ofs->duration_sec);
2967 fs->duration_nsec = ntohl(ofs->duration_nsec);
2968 fs->idle_timeout = ntohs(ofs->idle_timeout);
2969 fs->hard_timeout = ntohs(ofs->hard_timeout);
2973 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2974 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2976 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2977 const struct nx_flow_stats *nfs;
2978 size_t match_len, length;
2980 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2982 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2983 "bytes at end", msg->size);
2987 length = ntohs(nfs->length);
2988 match_len = ntohs(nfs->match_len);
2989 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2990 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2991 "claims invalid length %"PRIuSIZE, match_len, length);
2994 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2997 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2999 fs->cookie = nfs->cookie;
3000 fs->table_id = nfs->table_id;
3001 fs->duration_sec = ntohl(nfs->duration_sec);
3002 fs->duration_nsec = ntohl(nfs->duration_nsec);
3003 fs->priority = ntohs(nfs->priority);
3004 fs->idle_timeout = ntohs(nfs->idle_timeout);
3005 fs->hard_timeout = ntohs(nfs->hard_timeout);
3009 if (flow_age_extension) {
3010 if (nfs->idle_age) {
3011 fs->idle_age = ntohs(nfs->idle_age) - 1;
3013 if (nfs->hard_age) {
3014 fs->hard_age = ntohs(nfs->hard_age) - 1;
3017 fs->packet_count = ntohll(nfs->packet_count);
3018 fs->byte_count = ntohll(nfs->byte_count);
3024 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
3026 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
3029 fs->ofpacts = ofpacts->data;
3030 fs->ofpacts_len = ofpacts->size;
3035 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
3037 * We use this in situations where OVS internally uses UINT64_MAX to mean
3038 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
3040 unknown_to_zero(uint64_t count)
3042 return count != UINT64_MAX ? count : 0;
3045 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
3046 * those already present in the list of ofpbufs in 'replies'. 'replies' should
3047 * have been initialized with ofpmp_init(). */
3049 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
3050 struct ovs_list *replies)
3052 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
3053 size_t start_ofs = reply->size;
3054 enum ofp_version version = ofpmp_version(replies);
3055 enum ofpraw raw = ofpmp_decode_raw(replies);
3057 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
3058 struct ofp11_flow_stats *ofs;
3060 ofpbuf_put_uninit(reply, sizeof *ofs);
3061 oxm_put_match(reply, &fs->match, version);
3062 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
3065 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3066 ofs->length = htons(reply->size - start_ofs);
3067 ofs->table_id = fs->table_id;
3069 ofs->duration_sec = htonl(fs->duration_sec);
3070 ofs->duration_nsec = htonl(fs->duration_nsec);
3071 ofs->priority = htons(fs->priority);
3072 ofs->idle_timeout = htons(fs->idle_timeout);
3073 ofs->hard_timeout = htons(fs->hard_timeout);
3074 if (version >= OFP14_VERSION) {
3075 ofs->importance = htons(fs->importance);
3077 ofs->importance = 0;
3079 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3080 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3084 memset(ofs->pad2, 0, sizeof ofs->pad2);
3085 ofs->cookie = fs->cookie;
3086 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3087 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3088 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3089 struct ofp10_flow_stats *ofs;
3091 ofpbuf_put_uninit(reply, sizeof *ofs);
3092 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3094 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3095 ofs->length = htons(reply->size - start_ofs);
3096 ofs->table_id = fs->table_id;
3098 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3099 ofs->duration_sec = htonl(fs->duration_sec);
3100 ofs->duration_nsec = htonl(fs->duration_nsec);
3101 ofs->priority = htons(fs->priority);
3102 ofs->idle_timeout = htons(fs->idle_timeout);
3103 ofs->hard_timeout = htons(fs->hard_timeout);
3104 memset(ofs->pad2, 0, sizeof ofs->pad2);
3105 put_32aligned_be64(&ofs->cookie, fs->cookie);
3106 put_32aligned_be64(&ofs->packet_count,
3107 htonll(unknown_to_zero(fs->packet_count)));
3108 put_32aligned_be64(&ofs->byte_count,
3109 htonll(unknown_to_zero(fs->byte_count)));
3110 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3111 struct nx_flow_stats *nfs;
3114 ofpbuf_put_uninit(reply, sizeof *nfs);
3115 match_len = nx_put_match(reply, &fs->match, 0, 0);
3116 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3118 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3119 nfs->length = htons(reply->size - start_ofs);
3120 nfs->table_id = fs->table_id;
3122 nfs->duration_sec = htonl(fs->duration_sec);
3123 nfs->duration_nsec = htonl(fs->duration_nsec);
3124 nfs->priority = htons(fs->priority);
3125 nfs->idle_timeout = htons(fs->idle_timeout);
3126 nfs->hard_timeout = htons(fs->hard_timeout);
3127 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3128 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3130 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3131 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3133 nfs->match_len = htons(match_len);
3134 nfs->cookie = fs->cookie;
3135 nfs->packet_count = htonll(fs->packet_count);
3136 nfs->byte_count = htonll(fs->byte_count);
3141 ofpmp_postappend(replies, start_ofs);
3144 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3145 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3147 ofputil_encode_aggregate_stats_reply(
3148 const struct ofputil_aggregate_stats *stats,
3149 const struct ofp_header *request)
3151 struct ofp_aggregate_stats_reply *asr;
3152 uint64_t packet_count;
3153 uint64_t byte_count;
3157 ofpraw_decode(&raw, request);
3158 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3159 packet_count = unknown_to_zero(stats->packet_count);
3160 byte_count = unknown_to_zero(stats->byte_count);
3162 packet_count = stats->packet_count;
3163 byte_count = stats->byte_count;
3166 msg = ofpraw_alloc_stats_reply(request, 0);
3167 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3168 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3169 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3170 asr->flow_count = htonl(stats->flow_count);
3176 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3177 const struct ofp_header *reply)
3179 struct ofp_aggregate_stats_reply *asr;
3182 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3183 ofpraw_pull_assert(&msg);
3186 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3187 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3188 stats->flow_count = ntohl(asr->flow_count);
3193 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3194 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3195 * an OpenFlow error code. */
3197 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3198 const struct ofp_header *oh)
3203 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3204 raw = ofpraw_pull_assert(&b);
3205 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3206 const struct ofp12_flow_removed *ofr;
3209 ofr = ofpbuf_pull(&b, sizeof *ofr);
3211 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3216 fr->priority = ntohs(ofr->priority);
3217 fr->cookie = ofr->cookie;
3218 fr->reason = ofr->reason;
3219 fr->table_id = ofr->table_id;
3220 fr->duration_sec = ntohl(ofr->duration_sec);
3221 fr->duration_nsec = ntohl(ofr->duration_nsec);
3222 fr->idle_timeout = ntohs(ofr->idle_timeout);
3223 fr->hard_timeout = ntohs(ofr->hard_timeout);
3224 fr->packet_count = ntohll(ofr->packet_count);
3225 fr->byte_count = ntohll(ofr->byte_count);
3226 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3227 const struct ofp10_flow_removed *ofr;
3229 ofr = ofpbuf_pull(&b, sizeof *ofr);
3231 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3232 fr->priority = ntohs(ofr->priority);
3233 fr->cookie = ofr->cookie;
3234 fr->reason = ofr->reason;
3236 fr->duration_sec = ntohl(ofr->duration_sec);
3237 fr->duration_nsec = ntohl(ofr->duration_nsec);
3238 fr->idle_timeout = ntohs(ofr->idle_timeout);
3239 fr->hard_timeout = 0;
3240 fr->packet_count = ntohll(ofr->packet_count);
3241 fr->byte_count = ntohll(ofr->byte_count);
3242 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3243 struct nx_flow_removed *nfr;
3246 nfr = ofpbuf_pull(&b, sizeof *nfr);
3247 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3253 return OFPERR_OFPBRC_BAD_LEN;
3256 fr->priority = ntohs(nfr->priority);
3257 fr->cookie = nfr->cookie;
3258 fr->reason = nfr->reason;
3259 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3260 fr->duration_sec = ntohl(nfr->duration_sec);
3261 fr->duration_nsec = ntohl(nfr->duration_nsec);
3262 fr->idle_timeout = ntohs(nfr->idle_timeout);
3263 fr->hard_timeout = 0;
3264 fr->packet_count = ntohll(nfr->packet_count);
3265 fr->byte_count = ntohll(nfr->byte_count);
3273 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3274 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3277 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3278 enum ofputil_protocol protocol)
3281 enum ofp_flow_removed_reason reason = fr->reason;
3283 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3284 reason = OFPRR_DELETE;
3288 case OFPUTIL_P_OF11_STD:
3289 case OFPUTIL_P_OF12_OXM:
3290 case OFPUTIL_P_OF13_OXM:
3291 case OFPUTIL_P_OF14_OXM:
3292 case OFPUTIL_P_OF15_OXM: {
3293 struct ofp12_flow_removed *ofr;
3295 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3296 ofputil_protocol_to_ofp_version(protocol),
3298 ofputil_match_typical_len(protocol));
3299 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3300 ofr->cookie = fr->cookie;
3301 ofr->priority = htons(fr->priority);
3302 ofr->reason = reason;
3303 ofr->table_id = fr->table_id;
3304 ofr->duration_sec = htonl(fr->duration_sec);
3305 ofr->duration_nsec = htonl(fr->duration_nsec);
3306 ofr->idle_timeout = htons(fr->idle_timeout);
3307 ofr->hard_timeout = htons(fr->hard_timeout);
3308 ofr->packet_count = htonll(fr->packet_count);
3309 ofr->byte_count = htonll(fr->byte_count);
3310 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3314 case OFPUTIL_P_OF10_STD:
3315 case OFPUTIL_P_OF10_STD_TID: {
3316 struct ofp10_flow_removed *ofr;
3318 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3320 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3321 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3322 ofr->cookie = fr->cookie;
3323 ofr->priority = htons(fr->priority);
3324 ofr->reason = reason;
3325 ofr->duration_sec = htonl(fr->duration_sec);
3326 ofr->duration_nsec = htonl(fr->duration_nsec);
3327 ofr->idle_timeout = htons(fr->idle_timeout);
3328 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3329 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3333 case OFPUTIL_P_OF10_NXM:
3334 case OFPUTIL_P_OF10_NXM_TID: {
3335 struct nx_flow_removed *nfr;
3338 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3339 htonl(0), NXM_TYPICAL_LEN);
3340 ofpbuf_put_zeros(msg, sizeof *nfr);
3341 match_len = nx_put_match(msg, &fr->match, 0, 0);
3344 nfr->cookie = fr->cookie;
3345 nfr->priority = htons(fr->priority);
3346 nfr->reason = reason;
3347 nfr->table_id = fr->table_id + 1;
3348 nfr->duration_sec = htonl(fr->duration_sec);
3349 nfr->duration_nsec = htonl(fr->duration_nsec);
3350 nfr->idle_timeout = htons(fr->idle_timeout);
3351 nfr->match_len = htons(match_len);
3352 nfr->packet_count = htonll(fr->packet_count);
3353 nfr->byte_count = htonll(fr->byte_count);
3365 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3366 const struct ofp_header *oh)
3371 memset(pin, 0, sizeof *pin);
3372 pin->cookie = OVS_BE64_MAX;
3374 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3375 raw = ofpraw_pull_assert(&b);
3376 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3377 const struct ofp13_packet_in *opi;
3379 size_t packet_in_size;
3381 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3382 packet_in_size = sizeof (struct ofp12_packet_in);
3384 packet_in_size = sizeof (struct ofp13_packet_in);
3387 opi = ofpbuf_pull(&b, packet_in_size);
3388 error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3393 if (!ofpbuf_try_pull(&b, 2)) {
3394 return OFPERR_OFPBRC_BAD_LEN;
3397 pin->reason = opi->pi.reason;
3398 pin->table_id = opi->pi.table_id;
3399 pin->buffer_id = ntohl(opi->pi.buffer_id);
3400 pin->total_len = ntohs(opi->pi.total_len);
3402 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3403 pin->cookie = opi->cookie;
3406 pin->packet = b.data;
3407 pin->packet_len = b.size;
3408 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3409 const struct ofp10_packet_in *opi;
3411 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3413 pin->packet = opi->data;
3414 pin->packet_len = b.size;
3416 match_init_catchall(&pin->flow_metadata);
3417 match_set_in_port(&pin->flow_metadata, u16_to_ofp(ntohs(opi->in_port)));
3418 pin->reason = opi->reason;
3419 pin->buffer_id = ntohl(opi->buffer_id);
3420 pin->total_len = ntohs(opi->total_len);
3421 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3422 const struct ofp11_packet_in *opi;
3426 opi = ofpbuf_pull(&b, sizeof *opi);
3428 pin->packet = b.data;
3429 pin->packet_len = b.size;
3431 pin->buffer_id = ntohl(opi->buffer_id);
3432 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3436 match_init_catchall(&pin->flow_metadata);
3437 match_set_in_port(&pin->flow_metadata, in_port);
3438 pin->total_len = ntohs(opi->total_len);
3439 pin->reason = opi->reason;
3440 pin->table_id = opi->table_id;
3441 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3442 const struct nx_packet_in *npi;
3445 npi = ofpbuf_pull(&b, sizeof *npi);
3446 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3447 &pin->flow_metadata, NULL, NULL);
3452 if (!ofpbuf_try_pull(&b, 2)) {
3453 return OFPERR_OFPBRC_BAD_LEN;
3456 pin->reason = npi->reason;
3457 pin->table_id = npi->table_id;
3458 pin->cookie = npi->cookie;
3460 pin->buffer_id = ntohl(npi->buffer_id);
3461 pin->total_len = ntohs(npi->total_len);
3463 pin->packet = b.data;
3464 pin->packet_len = b.size;
3472 static struct ofpbuf *
3473 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3475 struct ofp10_packet_in *opi;
3476 struct ofpbuf *packet;
3478 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3479 htonl(0), pin->packet_len);
3480 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3481 opi->total_len = htons(pin->total_len);
3482 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3483 opi->reason = pin->reason;
3484 opi->buffer_id = htonl(pin->buffer_id);
3486 ofpbuf_put(packet, pin->packet, pin->packet_len);
3491 static struct ofpbuf *
3492 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3494 struct nx_packet_in *npi;
3495 struct ofpbuf *packet;
3498 /* The final argument is just an estimate of the space required. */
3499 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3500 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3501 ofpbuf_put_zeros(packet, sizeof *npi);
3502 match_len = nx_put_match(packet, &pin->flow_metadata, 0, 0);
3503 ofpbuf_put_zeros(packet, 2);
3504 ofpbuf_put(packet, pin->packet, pin->packet_len);
3507 npi->buffer_id = htonl(pin->buffer_id);
3508 npi->total_len = htons(pin->total_len);
3509 npi->reason = pin->reason;
3510 npi->table_id = pin->table_id;
3511 npi->cookie = pin->cookie;
3512 npi->match_len = htons(match_len);
3517 static struct ofpbuf *
3518 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3520 struct ofp11_packet_in *opi;
3521 struct ofpbuf *packet;
3523 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3524 htonl(0), pin->packet_len);
3525 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3526 opi->buffer_id = htonl(pin->buffer_id);
3527 opi->in_port = ofputil_port_to_ofp11(pin->flow_metadata.flow.in_port.ofp_port);
3528 opi->in_phy_port = opi->in_port;
3529 opi->total_len = htons(pin->total_len);
3530 opi->reason = pin->reason;
3531 opi->table_id = pin->table_id;
3533 ofpbuf_put(packet, pin->packet, pin->packet_len);
3538 static struct ofpbuf *
3539 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3540 enum ofputil_protocol protocol)
3542 struct ofp13_packet_in *opi;
3543 enum ofpraw packet_in_raw;
3544 enum ofp_version packet_in_version;
3545 size_t packet_in_size;
3546 struct ofpbuf *packet;
3548 if (protocol == OFPUTIL_P_OF12_OXM) {
3549 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3550 packet_in_version = OFP12_VERSION;
3551 packet_in_size = sizeof (struct ofp12_packet_in);
3553 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3554 packet_in_version = ofputil_protocol_to_ofp_version(protocol);
3555 packet_in_size = sizeof (struct ofp13_packet_in);
3558 /* The final argument is just an estimate of the space required. */
3559 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3560 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3561 ofpbuf_put_zeros(packet, packet_in_size);
3562 oxm_put_match(packet, &pin->flow_metadata,
3563 ofputil_protocol_to_ofp_version(protocol));
3564 ofpbuf_put_zeros(packet, 2);
3565 ofpbuf_put(packet, pin->packet, pin->packet_len);
3568 opi->pi.buffer_id = htonl(pin->buffer_id);
3569 opi->pi.total_len = htons(pin->total_len);
3570 opi->pi.reason = pin->reason;
3571 opi->pi.table_id = pin->table_id;
3572 if (protocol != OFPUTIL_P_OF12_OXM) {
3573 opi->cookie = pin->cookie;
3579 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3580 * in the format specified by 'packet_in_format'. */
3582 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3583 enum ofputil_protocol protocol,
3584 enum nx_packet_in_format packet_in_format)
3586 struct ofpbuf *packet;
3589 case OFPUTIL_P_OF10_STD:
3590 case OFPUTIL_P_OF10_STD_TID:
3591 case OFPUTIL_P_OF10_NXM:
3592 case OFPUTIL_P_OF10_NXM_TID:
3593 packet = (packet_in_format == NXPIF_NXM
3594 ? ofputil_encode_nx_packet_in(pin)
3595 : ofputil_encode_ofp10_packet_in(pin));
3598 case OFPUTIL_P_OF11_STD:
3599 packet = ofputil_encode_ofp11_packet_in(pin);
3602 case OFPUTIL_P_OF12_OXM:
3603 case OFPUTIL_P_OF13_OXM:
3604 case OFPUTIL_P_OF14_OXM:
3605 case OFPUTIL_P_OF15_OXM:
3606 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3613 ofpmsg_update_length(packet);
3617 /* Returns a string form of 'reason'. The return value is either a statically
3618 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3619 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3621 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3622 char *reasonbuf, size_t bufsize)
3629 case OFPR_INVALID_TTL:
3630 return "invalid_ttl";
3631 case OFPR_ACTION_SET:
3632 return "action_set";
3635 case OFPR_PACKET_OUT:
3636 return "packet_out";
3638 case OFPR_N_REASONS:
3640 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3646 ofputil_packet_in_reason_from_string(const char *s,
3647 enum ofp_packet_in_reason *reason)
3651 for (i = 0; i < OFPR_N_REASONS; i++) {
3652 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3653 const char *reason_s;
3655 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3657 if (!strcasecmp(s, reason_s)) {
3665 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3668 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3669 * message's actions. The caller must initialize 'ofpacts' and retains
3670 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3672 * Returns 0 if successful, otherwise an OFPERR_* value. */
3674 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3675 const struct ofp_header *oh,
3676 struct ofpbuf *ofpacts)
3681 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3682 raw = ofpraw_pull_assert(&b);
3684 ofpbuf_clear(ofpacts);
3685 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3687 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3689 po->buffer_id = ntohl(opo->buffer_id);
3690 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3695 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3696 oh->version, ofpacts);
3700 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3702 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3704 po->buffer_id = ntohl(opo->buffer_id);
3705 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3707 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3708 oh->version, ofpacts);
3716 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3717 && po->in_port != OFPP_LOCAL
3718 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3719 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3721 return OFPERR_OFPBRC_BAD_PORT;
3724 po->ofpacts = ofpacts->data;
3725 po->ofpacts_len = ofpacts->size;
3727 if (po->buffer_id == UINT32_MAX) {
3728 po->packet = b.data;
3729 po->packet_len = b.size;
3738 /* ofputil_phy_port */
3740 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3741 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3742 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3743 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3744 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3745 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3746 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3747 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3749 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3750 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3751 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3752 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3753 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3754 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3756 static enum netdev_features
3757 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3759 uint32_t ofp10 = ntohl(ofp10_);
3760 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3764 netdev_port_features_to_ofp10(enum netdev_features features)
3766 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3769 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3770 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3771 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3772 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3773 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3774 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3775 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3776 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3777 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3778 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3779 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3780 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3781 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3782 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3783 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3784 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3786 static enum netdev_features
3787 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3789 return ntohl(ofp11) & 0xffff;
3793 netdev_port_features_to_ofp11(enum netdev_features features)
3795 return htonl(features & 0xffff);
3799 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3800 const struct ofp10_phy_port *opp)
3802 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3803 pp->hw_addr = opp->hw_addr;
3804 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3806 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3807 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3809 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3810 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3811 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3812 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3814 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3815 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3821 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3822 const struct ofp11_port *op)
3826 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3830 pp->hw_addr = op->hw_addr;
3831 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3833 pp->config = ntohl(op->config) & OFPPC11_ALL;
3834 pp->state = ntohl(op->state) & OFPPS11_ALL;
3836 pp->curr = netdev_port_features_from_ofp11(op->curr);
3837 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3838 pp->supported = netdev_port_features_from_ofp11(op->supported);
3839 pp->peer = netdev_port_features_from_ofp11(op->peer);
3841 pp->curr_speed = ntohl(op->curr_speed);
3842 pp->max_speed = ntohl(op->max_speed);
3848 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3849 struct ofputil_phy_port *pp)
3851 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3853 if (payload->size != sizeof *eth) {
3854 return OFPERR_OFPBPC_BAD_LEN;
3857 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3858 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3859 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3860 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3862 pp->curr_speed = ntohl(eth->curr_speed);
3863 pp->max_speed = ntohl(eth->max_speed);
3869 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3871 struct ofpbuf properties;
3872 struct ofp14_port *op;
3876 op = ofpbuf_try_pull(msg, sizeof *op);
3878 return OFPERR_OFPBRC_BAD_LEN;
3881 len = ntohs(op->length);
3882 if (len < sizeof *op || len - sizeof *op > msg->size) {
3883 return OFPERR_OFPBRC_BAD_LEN;
3886 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3888 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3892 pp->hw_addr = op->hw_addr;
3893 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3895 pp->config = ntohl(op->config) & OFPPC11_ALL;
3896 pp->state = ntohl(op->state) & OFPPS11_ALL;
3898 while (properties.size > 0) {
3899 struct ofpbuf payload;
3903 error = ofpprop_pull(&properties, &payload, &type);
3909 case OFPPDPT14_ETHERNET:
3910 error = parse_ofp14_port_ethernet_property(&payload, pp);
3914 error = OFPPROP_UNKNOWN(true, "port", type);
3927 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3928 struct ofp10_phy_port *opp)
3930 memset(opp, 0, sizeof *opp);
3932 opp->port_no = htons(ofp_to_u16(pp->port_no));
3933 opp->hw_addr = pp->hw_addr;
3934 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3936 opp->config = htonl(pp->config & OFPPC10_ALL);
3937 opp->state = htonl(pp->state & OFPPS10_ALL);
3939 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3940 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3941 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3942 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3946 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3947 struct ofp11_port *op)
3949 memset(op, 0, sizeof *op);
3951 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3952 op->hw_addr = pp->hw_addr;
3953 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3955 op->config = htonl(pp->config & OFPPC11_ALL);
3956 op->state = htonl(pp->state & OFPPS11_ALL);
3958 op->curr = netdev_port_features_to_ofp11(pp->curr);
3959 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3960 op->supported = netdev_port_features_to_ofp11(pp->supported);
3961 op->peer = netdev_port_features_to_ofp11(pp->peer);
3963 op->curr_speed = htonl(pp->curr_speed);
3964 op->max_speed = htonl(pp->max_speed);
3968 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3971 struct ofp14_port *op;
3972 struct ofp14_port_desc_prop_ethernet *eth;
3974 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3976 op = ofpbuf_put_zeros(b, sizeof *op);
3977 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3978 op->length = htons(sizeof *op + sizeof *eth);
3979 op->hw_addr = pp->hw_addr;
3980 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3981 op->config = htonl(pp->config & OFPPC11_ALL);
3982 op->state = htonl(pp->state & OFPPS11_ALL);
3984 eth = ofpprop_put_zeros(b, OFPPDPT14_ETHERNET, sizeof *eth);
3985 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3986 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3987 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3988 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3989 eth->curr_speed = htonl(pp->curr_speed);
3990 eth->max_speed = htonl(pp->max_speed);
3994 ofputil_put_phy_port(enum ofp_version ofp_version,
3995 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3997 switch (ofp_version) {
3998 case OFP10_VERSION: {
3999 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
4000 ofputil_encode_ofp10_phy_port(pp, opp);
4006 case OFP13_VERSION: {
4007 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
4008 ofputil_encode_ofp11_port(pp, op);
4014 ofputil_put_ofp14_port(pp, b);
4023 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
4029 ofpbuf_use_const(&b, request, ntohs(request->length));
4030 raw = ofpraw_pull_assert(&b);
4031 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4034 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4035 ovs_be32 *ofp11_port;
4037 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4038 return ofputil_port_from_ofp11(*ofp11_port, port);
4045 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4048 struct ofpbuf *request;
4050 switch (ofp_version) {
4056 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4059 case OFP15_VERSION:{
4060 struct ofp15_port_desc_request *req;
4061 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4063 req = ofpbuf_put_zeros(request, sizeof *req);
4064 req->port_no = ofputil_port_to_ofp11(port);
4075 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4076 struct ovs_list *replies)
4078 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4079 size_t start_ofs = reply->size;
4081 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4082 ofpmp_postappend(replies, start_ofs);
4085 /* ofputil_switch_config */
4087 /* Decodes 'oh', which must be an OFPT_GET_CONFIG_REPLY or OFPT_SET_CONFIG
4088 * message, into 'config'. Returns false if 'oh' contained any flags that
4089 * aren't specified in its version of OpenFlow, true otherwise. */
4091 ofputil_decode_switch_config(const struct ofp_header *oh,
4092 struct ofputil_switch_config *config)
4094 const struct ofp_switch_config *osc;
4097 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4098 ofpraw_pull_assert(&b);
4099 osc = ofpbuf_pull(&b, sizeof *osc);
4101 config->frag = ntohs(osc->flags) & OFPC_FRAG_MASK;
4102 config->miss_send_len = ntohs(osc->miss_send_len);
4104 ovs_be16 valid_mask = htons(OFPC_FRAG_MASK);
4105 if (oh->version < OFP13_VERSION) {
4106 const ovs_be16 ttl_bit = htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4107 valid_mask |= ttl_bit;
4108 config->invalid_ttl_to_controller = (osc->flags & ttl_bit) != 0;
4110 config->invalid_ttl_to_controller = -1;
4113 return !(osc->flags & ~valid_mask);
4117 ofputil_decode_get_config_reply(const struct ofp_header *oh,
4118 struct ofputil_switch_config *config)
4120 ofputil_decode_switch_config(oh, config);
4124 ofputil_decode_set_config(const struct ofp_header *oh,
4125 struct ofputil_switch_config *config)
4127 return (ofputil_decode_switch_config(oh, config)
4129 : OFPERR_OFPSCFC_BAD_FLAGS);
4132 static struct ofpbuf *
4133 ofputil_put_switch_config(const struct ofputil_switch_config *config,
4136 const struct ofp_header *oh = b->data;
4137 struct ofp_switch_config *osc = ofpbuf_put_zeros(b, sizeof *osc);
4138 osc->flags = htons(config->frag);
4139 if (config->invalid_ttl_to_controller > 0 && oh->version < OFP13_VERSION) {
4140 osc->flags |= htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4142 osc->miss_send_len = htons(config->miss_send_len);
4147 ofputil_encode_get_config_reply(const struct ofp_header *request,
4148 const struct ofputil_switch_config *config)
4150 struct ofpbuf *b = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY,
4152 return ofputil_put_switch_config(config, b);
4156 ofputil_encode_set_config(const struct ofputil_switch_config *config,
4157 enum ofp_version version)
4159 struct ofpbuf *b = ofpraw_alloc(OFPRAW_OFPT_SET_CONFIG, version, 0);
4160 return ofputil_put_switch_config(config, b);
4163 /* ofputil_switch_features */
4165 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4166 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4167 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4168 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4169 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4170 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4171 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4172 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4175 ofputil_capabilities_mask(enum ofp_version ofp_version)
4177 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4178 switch (ofp_version) {
4181 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4186 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4188 /* Caller needs to check osf->header.version itself */
4193 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4194 * abstract representation in '*features'. Initializes '*b' to iterate over
4195 * the OpenFlow port structures following 'osf' with later calls to
4196 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4197 * OFPERR_* value. */
4199 ofputil_decode_switch_features(const struct ofp_header *oh,
4200 struct ofputil_switch_features *features,
4203 const struct ofp_switch_features *osf;
4206 ofpbuf_use_const(b, oh, ntohs(oh->length));
4207 raw = ofpraw_pull_assert(b);
4209 osf = ofpbuf_pull(b, sizeof *osf);
4210 features->datapath_id = ntohll(osf->datapath_id);
4211 features->n_buffers = ntohl(osf->n_buffers);
4212 features->n_tables = osf->n_tables;
4213 features->auxiliary_id = 0;
4215 features->capabilities = ntohl(osf->capabilities) &
4216 ofputil_capabilities_mask(oh->version);
4218 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4219 if (osf->capabilities & htonl(OFPC10_STP)) {
4220 features->capabilities |= OFPUTIL_C_STP;
4222 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4224 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4225 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4226 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4227 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4229 features->ofpacts = 0;
4230 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4231 features->auxiliary_id = osf->auxiliary_id;
4234 return OFPERR_OFPBRC_BAD_VERSION;
4240 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4241 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4242 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4244 * Given a buffer 'b' that contains a Features Reply message, this message
4245 * checks if it contains a complete list of the switch's ports. Returns true,
4246 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4247 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4250 * When this function returns false, the caller should send an OFPST_PORT_DESC
4251 * stats request to get the ports. */
4253 ofputil_switch_features_has_ports(struct ofpbuf *b)
4255 struct ofp_header *oh = b->data;
4256 size_t phy_port_size;
4258 if (oh->version >= OFP13_VERSION) {
4259 /* OpenFlow 1.3+ never has ports in the feature reply. */
4263 phy_port_size = (oh->version == OFP10_VERSION
4264 ? sizeof(struct ofp10_phy_port)
4265 : sizeof(struct ofp11_port));
4266 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4267 /* There's room for additional ports in the feature reply.
4268 * Assume that the list is complete. */
4272 /* The feature reply has no room for more ports. Probably the list is
4273 * truncated. Drop the ports and tell the caller to retrieve them with
4274 * OFPST_PORT_DESC. */
4275 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4276 ofpmsg_update_length(b);
4280 /* Returns a buffer owned by the caller that encodes 'features' in the format
4281 * required by 'protocol' with the given 'xid'. The caller should append port
4282 * information to the buffer with subsequent calls to
4283 * ofputil_put_switch_features_port(). */
4285 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4286 enum ofputil_protocol protocol, ovs_be32 xid)
4288 struct ofp_switch_features *osf;
4290 enum ofp_version version;
4293 version = ofputil_protocol_to_ofp_version(protocol);
4296 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4300 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4305 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4310 b = ofpraw_alloc_xid(raw, version, xid, 0);
4311 osf = ofpbuf_put_zeros(b, sizeof *osf);
4312 osf->datapath_id = htonll(features->datapath_id);
4313 osf->n_buffers = htonl(features->n_buffers);
4314 osf->n_tables = features->n_tables;
4316 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4317 osf->capabilities = htonl(features->capabilities &
4318 ofputil_capabilities_mask(version));
4321 if (features->capabilities & OFPUTIL_C_STP) {
4322 osf->capabilities |= htonl(OFPC10_STP);
4324 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4330 osf->auxiliary_id = features->auxiliary_id;
4334 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4335 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4345 /* Encodes 'pp' into the format required by the switch_features message already
4346 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4347 * and appends the encoded version to 'b'. */
4349 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4352 const struct ofp_header *oh = b->data;
4354 if (oh->version < OFP13_VERSION) {
4355 /* Try adding a port description to the message, but drop it again if
4356 * the buffer overflows. (This possibility for overflow is why
4357 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4358 size_t start_ofs = b->size;
4359 ofputil_put_phy_port(oh->version, pp, b);
4360 if (b->size > UINT16_MAX) {
4361 b->size = start_ofs;
4366 /* ofputil_port_status */
4368 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4369 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4371 ofputil_decode_port_status(const struct ofp_header *oh,
4372 struct ofputil_port_status *ps)
4374 const struct ofp_port_status *ops;
4378 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4379 ofpraw_pull_assert(&b);
4380 ops = ofpbuf_pull(&b, sizeof *ops);
4382 if (ops->reason != OFPPR_ADD &&
4383 ops->reason != OFPPR_DELETE &&
4384 ops->reason != OFPPR_MODIFY) {
4385 return OFPERR_NXBRC_BAD_REASON;
4387 ps->reason = ops->reason;
4389 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4390 ovs_assert(retval != EOF);
4394 /* Converts the abstract form of a "port status" message in '*ps' into an
4395 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4396 * a buffer owned by the caller. */
4398 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4399 enum ofputil_protocol protocol)
4401 struct ofp_port_status *ops;
4403 enum ofp_version version;
4406 version = ofputil_protocol_to_ofp_version(protocol);
4409 raw = OFPRAW_OFPT10_PORT_STATUS;
4415 raw = OFPRAW_OFPT11_PORT_STATUS;
4420 raw = OFPRAW_OFPT14_PORT_STATUS;
4427 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4428 ops = ofpbuf_put_zeros(b, sizeof *ops);
4429 ops->reason = ps->reason;
4430 ofputil_put_phy_port(version, &ps->desc, b);
4431 ofpmsg_update_length(b);
4435 /* ofputil_port_mod */
4438 parse_port_mod_ethernet_property(struct ofpbuf *property,
4439 struct ofputil_port_mod *pm)
4444 error = ofpprop_parse_be32(property, &advertise);
4446 pm->advertise = netdev_port_features_from_ofp11(advertise);
4451 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4452 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4454 ofputil_decode_port_mod(const struct ofp_header *oh,
4455 struct ofputil_port_mod *pm, bool loose)
4460 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4461 raw = ofpraw_pull_assert(&b);
4463 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4464 const struct ofp10_port_mod *opm = b.data;
4466 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4467 pm->hw_addr = opm->hw_addr;
4468 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4469 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4470 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4471 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4472 const struct ofp11_port_mod *opm = b.data;
4475 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4480 pm->hw_addr = opm->hw_addr;
4481 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4482 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4483 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4484 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4485 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4488 memset(pm, 0, sizeof *pm);
4490 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4495 pm->hw_addr = opm->hw_addr;
4496 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4497 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4499 while (b.size > 0) {
4500 struct ofpbuf property;
4504 error = ofpprop_pull(&b, &property, &type);
4510 case OFPPMPT14_ETHERNET:
4511 error = parse_port_mod_ethernet_property(&property, pm);
4515 error = OFPPROP_UNKNOWN(loose, "port_mod", type);
4524 return OFPERR_OFPBRC_BAD_TYPE;
4527 pm->config &= pm->mask;
4531 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4532 * message suitable for 'protocol', and returns that encoded form in a buffer
4533 * owned by the caller. */
4535 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4536 enum ofputil_protocol protocol)
4538 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4541 switch (ofp_version) {
4542 case OFP10_VERSION: {
4543 struct ofp10_port_mod *opm;
4545 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4546 opm = ofpbuf_put_zeros(b, sizeof *opm);
4547 opm->port_no = htons(ofp_to_u16(pm->port_no));
4548 opm->hw_addr = pm->hw_addr;
4549 opm->config = htonl(pm->config & OFPPC10_ALL);
4550 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4551 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4557 case OFP13_VERSION: {
4558 struct ofp11_port_mod *opm;
4560 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4561 opm = ofpbuf_put_zeros(b, sizeof *opm);
4562 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4563 opm->hw_addr = pm->hw_addr;
4564 opm->config = htonl(pm->config & OFPPC11_ALL);
4565 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4566 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4570 case OFP15_VERSION: {
4571 struct ofp14_port_mod *opm;
4573 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, 0);
4574 opm = ofpbuf_put_zeros(b, sizeof *opm);
4575 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4576 opm->hw_addr = pm->hw_addr;
4577 opm->config = htonl(pm->config & OFPPC11_ALL);
4578 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4580 if (pm->advertise) {
4581 ofpprop_put_be32(b, OFPPMPT14_ETHERNET,
4582 netdev_port_features_to_ofp11(pm->advertise));
4593 /* Table features. */
4596 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4601 error = ofpprop_pull(msg, payload, typep);
4602 if (payload && !error) {
4603 ofpbuf_pull(payload, (char *)payload->msg - (char *)payload->header);
4609 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4614 while (payload->size > 0) {
4618 error = ofpprop_pull__(payload, NULL, 1, 0x10000, &type);
4622 if (type < CHAR_BIT * sizeof types) {
4623 types |= 1u << type;
4627 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4632 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4635 while (payload->size > 0) {
4636 enum ovs_instruction_type inst;
4640 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4641 * It seems clear that they aren't padded to 8 bytes, though, because
4642 * both standards say that "non-experimenter instructions are 4 bytes"
4643 * and do not mention any padding before the first instruction ID.
4644 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4645 * aligned on an odd 4-byte boundary.)
4647 * Anyway, we just assume they're all glommed together on byte
4649 error = ofpprop_pull__(payload, NULL, 1, 0x10000, &ofpit);
4654 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4656 *insts |= 1u << inst;
4657 } else if (!loose) {
4665 parse_table_features_next_table(struct ofpbuf *payload,
4666 unsigned long int *next_tables)
4670 memset(next_tables, 0, bitmap_n_bytes(255));
4671 for (i = 0; i < payload->size; i++) {
4672 uint8_t id = ((const uint8_t *) payload->data)[i];
4674 return OFPERR_OFPBPC_BAD_VALUE;
4676 bitmap_set1(next_tables, id);
4682 parse_oxms(struct ofpbuf *payload, bool loose,
4683 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4685 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4686 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4688 while (payload->size > 0) {
4689 const struct mf_field *field;
4693 error = nx_pull_header(payload, &field, &hasmask);
4695 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4696 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4702 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4703 return OFPERR_OFPBMC_BAD_MASK;
4707 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4708 return OFPERR_OFPBMC_BAD_MASK;
4713 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4714 * ofputil_table_features in 'tf'.
4716 * If 'loose' is true, this function ignores properties and values that it does
4717 * not understand, as a controller would want to do when interpreting
4718 * capabilities provided by a switch. If 'loose' is false, this function
4719 * treats unknown properties and values as an error, as a switch would want to
4720 * do when interpreting a configuration request made by a controller.
4722 * A single OpenFlow message can specify features for multiple tables. Calling
4723 * this function multiple times for a single 'msg' iterates through the tables
4724 * in the message. The caller must initially leave 'msg''s layer pointers null
4725 * and not modify them between calls.
4727 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4728 * a positive "enum ofperr" value. */
4730 ofputil_decode_table_features(struct ofpbuf *msg,
4731 struct ofputil_table_features *tf, bool loose)
4733 const struct ofp_header *oh;
4734 struct ofp13_table_features *otf;
4735 struct ofpbuf properties;
4738 memset(tf, 0, sizeof *tf);
4741 ofpraw_pull_assert(msg);
4749 if (msg->size < sizeof *otf) {
4750 return OFPERR_OFPBPC_BAD_LEN;
4754 len = ntohs(otf->length);
4755 if (len < sizeof *otf || len % 8 || len > msg->size) {
4756 return OFPERR_OFPBPC_BAD_LEN;
4758 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4759 ofpbuf_pull(&properties, sizeof *otf);
4761 tf->table_id = otf->table_id;
4762 if (tf->table_id == OFPTT_ALL) {
4763 return OFPERR_OFPTFFC_BAD_TABLE;
4766 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4767 tf->metadata_match = otf->metadata_match;
4768 tf->metadata_write = otf->metadata_write;
4769 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4770 if (oh->version >= OFP14_VERSION) {
4771 uint32_t caps = ntohl(otf->capabilities);
4772 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4773 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4775 tf->supports_eviction = -1;
4776 tf->supports_vacancy_events = -1;
4778 tf->max_entries = ntohl(otf->max_entries);
4780 while (properties.size > 0) {
4781 struct ofpbuf payload;
4785 error = pull_table_feature_property(&properties, &payload, &type);
4790 switch ((enum ofp13_table_feature_prop_type) type) {
4791 case OFPTFPT13_INSTRUCTIONS:
4792 error = parse_instruction_ids(&payload, loose,
4793 &tf->nonmiss.instructions);
4795 case OFPTFPT13_INSTRUCTIONS_MISS:
4796 error = parse_instruction_ids(&payload, loose,
4797 &tf->miss.instructions);
4800 case OFPTFPT13_NEXT_TABLES:
4801 error = parse_table_features_next_table(&payload,
4804 case OFPTFPT13_NEXT_TABLES_MISS:
4805 error = parse_table_features_next_table(&payload, tf->miss.next);
4808 case OFPTFPT13_WRITE_ACTIONS:
4809 error = parse_action_bitmap(&payload, oh->version,
4810 &tf->nonmiss.write.ofpacts);
4812 case OFPTFPT13_WRITE_ACTIONS_MISS:
4813 error = parse_action_bitmap(&payload, oh->version,
4814 &tf->miss.write.ofpacts);
4817 case OFPTFPT13_APPLY_ACTIONS:
4818 error = parse_action_bitmap(&payload, oh->version,
4819 &tf->nonmiss.apply.ofpacts);
4821 case OFPTFPT13_APPLY_ACTIONS_MISS:
4822 error = parse_action_bitmap(&payload, oh->version,
4823 &tf->miss.apply.ofpacts);
4826 case OFPTFPT13_MATCH:
4827 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4829 case OFPTFPT13_WILDCARDS:
4830 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4833 case OFPTFPT13_WRITE_SETFIELD:
4834 error = parse_oxms(&payload, loose,
4835 &tf->nonmiss.write.set_fields, NULL);
4837 case OFPTFPT13_WRITE_SETFIELD_MISS:
4838 error = parse_oxms(&payload, loose,
4839 &tf->miss.write.set_fields, NULL);
4841 case OFPTFPT13_APPLY_SETFIELD:
4842 error = parse_oxms(&payload, loose,
4843 &tf->nonmiss.apply.set_fields, NULL);
4845 case OFPTFPT13_APPLY_SETFIELD_MISS:
4846 error = parse_oxms(&payload, loose,
4847 &tf->miss.apply.set_fields, NULL);
4850 case OFPTFPT13_EXPERIMENTER:
4851 case OFPTFPT13_EXPERIMENTER_MISS:
4853 error = OFPPROP_UNKNOWN(loose, "table features", type);
4861 /* Fix inconsistencies:
4863 * - Turn on 'match' bits that are set in 'mask', because maskable
4864 * fields are matchable.
4866 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4867 * that is arbitrarily maskable can be wildcarded entirely.
4869 * - Turn off 'wildcard' bits that are not in 'match', because a field
4870 * must be matchable for it to be meaningfully wildcarded. */
4871 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4872 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4873 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4878 /* Encodes and returns a request to obtain the table features of a switch.
4879 * The message is encoded for OpenFlow version 'ofp_version'. */
4881 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4883 struct ofpbuf *request = NULL;
4885 switch (ofp_version) {
4889 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4890 "(\'-O OpenFlow13\')");
4894 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4905 put_fields_property(struct ofpbuf *reply,
4906 const struct mf_bitmap *fields,
4907 const struct mf_bitmap *masks,
4908 enum ofp13_table_feature_prop_type property,
4909 enum ofp_version version)
4914 start_ofs = ofpprop_start(reply, property);
4915 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4916 nx_put_header(reply, field, version,
4917 masks && bitmap_is_set(masks->bm, field));
4919 ofpprop_end(reply, start_ofs);
4923 put_table_action_features(struct ofpbuf *reply,
4924 const struct ofputil_table_action_features *taf,
4925 enum ofp13_table_feature_prop_type actions_type,
4926 enum ofp13_table_feature_prop_type set_fields_type,
4927 int miss_offset, enum ofp_version version)
4929 ofpprop_put_bitmap(reply, actions_type + miss_offset,
4930 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4932 put_fields_property(reply, &taf->set_fields, NULL,
4933 set_fields_type + miss_offset, version);
4937 put_table_instruction_features(
4938 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4939 int miss_offset, enum ofp_version version)
4944 ofpprop_put_bitmap(reply, OFPTFPT13_INSTRUCTIONS + miss_offset,
4945 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4948 start_ofs = ofpprop_start(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4949 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4950 ofpbuf_put(reply, &table_id, 1);
4952 ofpprop_end(reply, start_ofs);
4954 put_table_action_features(reply, &tif->write,
4955 OFPTFPT13_WRITE_ACTIONS,
4956 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4957 put_table_action_features(reply, &tif->apply,
4958 OFPTFPT13_APPLY_ACTIONS,
4959 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4963 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4964 struct ovs_list *replies)
4966 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4967 enum ofp_version version = ofpmp_version(replies);
4968 size_t start_ofs = reply->size;
4969 struct ofp13_table_features *otf;
4971 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4972 otf->table_id = tf->table_id;
4973 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4974 otf->metadata_match = tf->metadata_match;
4975 otf->metadata_write = tf->metadata_write;
4976 if (version >= OFP14_VERSION) {
4977 if (tf->supports_eviction) {
4978 otf->capabilities |= htonl(OFPTC14_EVICTION);
4980 if (tf->supports_vacancy_events) {
4981 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4984 otf->max_entries = htonl(tf->max_entries);
4986 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4987 put_table_instruction_features(reply, &tf->miss, 1, version);
4989 put_fields_property(reply, &tf->match, &tf->mask,
4990 OFPTFPT13_MATCH, version);
4991 put_fields_property(reply, &tf->wildcard, NULL,
4992 OFPTFPT13_WILDCARDS, version);
4994 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4995 otf->length = htons(reply->size - start_ofs);
4996 ofpmp_postappend(replies, start_ofs);
5000 parse_table_desc_vacancy_property(struct ofpbuf *property,
5001 struct ofputil_table_desc *td)
5003 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5005 if (property->size != sizeof *otv) {
5006 return OFPERR_OFPBPC_BAD_LEN;
5009 td->table_vacancy.vacancy_down = otv->vacancy_down;
5010 td->table_vacancy.vacancy_up = otv->vacancy_up;
5011 td->table_vacancy.vacancy = otv->vacancy;
5015 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
5016 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
5017 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
5020 ofputil_decode_table_desc(struct ofpbuf *msg,
5021 struct ofputil_table_desc *td,
5022 enum ofp_version version)
5024 struct ofp14_table_desc *otd;
5025 struct ofpbuf properties;
5028 memset(td, 0, sizeof *td);
5031 ofpraw_pull_assert(msg);
5038 otd = ofpbuf_try_pull(msg, sizeof *otd);
5040 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
5041 "leftover bytes at end", msg->size);
5042 return OFPERR_OFPBRC_BAD_LEN;
5045 td->table_id = otd->table_id;
5046 length = ntohs(otd->length);
5047 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
5048 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
5049 "length %"PRIuSIZE, length);
5050 return OFPERR_OFPBRC_BAD_LEN;
5052 length -= sizeof *otd;
5053 ofpbuf_use_const(&properties, ofpbuf_pull(msg, length), length);
5055 td->eviction = ofputil_decode_table_eviction(otd->config, version);
5056 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
5057 td->eviction_flags = UINT32_MAX;
5059 while (properties.size > 0) {
5060 struct ofpbuf payload;
5064 error = ofpprop_pull(&properties, &payload, &type);
5070 case OFPTMPT14_EVICTION:
5071 error = ofpprop_parse_u32(&payload, &td->eviction_flags);
5074 case OFPTMPT14_VACANCY:
5075 error = parse_table_desc_vacancy_property(&payload, td);
5079 error = OFPPROP_UNKNOWN(true, "table_desc", type);
5091 /* Encodes and returns a request to obtain description of tables of a switch.
5092 * The message is encoded for OpenFlow version 'ofp_version'. */
5094 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
5096 struct ofpbuf *request = NULL;
5098 if (ofp_version >= OFP14_VERSION) {
5099 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
5102 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
5103 "(\'-O OpenFlow14\')");
5109 /* Function to append Table desc information in a reply list. */
5111 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
5112 struct ovs_list *replies,
5113 enum ofp_version version)
5115 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5117 struct ofp14_table_desc *otd;
5119 start_otd = reply->size;
5120 ofpbuf_put_zeros(reply, sizeof *otd);
5121 if (td->eviction_flags != UINT32_MAX) {
5122 ofpprop_put_u32(reply, OFPTMPT14_EVICTION, td->eviction_flags);
5124 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5125 struct ofp14_table_mod_prop_vacancy *otv;
5127 otv = ofpprop_put_zeros(reply, OFPTMPT14_VACANCY, sizeof *otv);
5128 otv->vacancy_down = td->table_vacancy.vacancy_down;
5129 otv->vacancy_up = td->table_vacancy.vacancy_up;
5130 otv->vacancy = td->table_vacancy.vacancy;
5133 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5134 otd->length = htons(reply->size - start_otd);
5135 otd->table_id = td->table_id;
5136 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5137 td->eviction, td->vacancy,
5139 ofpmp_postappend(replies, start_otd);
5142 /* This function parses Vacancy property, and decodes the
5143 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5144 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5145 * greater than vacancy_up and also when current vacancy has non-zero
5146 * value. Returns 0 on success. */
5148 parse_table_mod_vacancy_property(struct ofpbuf *property,
5149 struct ofputil_table_mod *tm)
5151 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5153 if (property->size != sizeof *otv) {
5154 return OFPERR_OFPBPC_BAD_LEN;
5156 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5157 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5158 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5159 OFPPROP_LOG(&bad_ofmsg_rl, false,
5160 "Value of vacancy_down is greater than vacancy_up");
5161 return OFPERR_OFPBPC_BAD_VALUE;
5163 if (tm->table_vacancy.vacancy_down > 100 ||
5164 tm->table_vacancy.vacancy_up > 100) {
5165 OFPPROP_LOG(&bad_ofmsg_rl, false, "Vacancy threshold percentage "
5166 "should not be greater than 100");
5167 return OFPERR_OFPBPC_BAD_VALUE;
5169 tm->table_vacancy.vacancy = otv->vacancy;
5170 if (tm->table_vacancy.vacancy) {
5171 OFPPROP_LOG(&bad_ofmsg_rl, false,
5172 "Vacancy value should be zero for table-mod messages");
5173 return OFPERR_OFPBPC_BAD_VALUE;
5178 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5179 * table configuration (a table mod, table stats, or table features message),
5180 * returns the table vacancy configuration that it specifies.
5182 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5183 * so for other 'version' this function always returns
5184 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5185 static enum ofputil_table_vacancy
5186 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5188 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5189 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5190 : OFPUTIL_TABLE_VACANCY_OFF);
5193 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5194 * table configuration (a table mod, table stats, or table features message),
5195 * returns the table eviction configuration that it specifies.
5197 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5198 * so for other 'version' values this function always returns
5199 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5200 static enum ofputil_table_eviction
5201 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5203 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5204 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5205 : OFPUTIL_TABLE_EVICTION_OFF);
5208 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5209 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5210 * 'eviction' values. */
5212 ofputil_encode_table_config(enum ofputil_table_miss miss,
5213 enum ofputil_table_eviction eviction,
5214 enum ofputil_table_vacancy vacancy,
5215 enum ofp_version version)
5217 uint32_t config = 0;
5218 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5219 * information on the crazy evolution of this field. */
5222 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5227 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5229 case OFPUTIL_TABLE_MISS_DEFAULT:
5230 /* Really this shouldn't be used for encoding (the caller should
5231 * provide a specific value) but I can't imagine that defaulting to
5232 * the fall-through case here will hurt. */
5233 case OFPUTIL_TABLE_MISS_CONTROLLER:
5235 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5236 case OFPUTIL_TABLE_MISS_CONTINUE:
5237 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5238 case OFPUTIL_TABLE_MISS_DROP:
5239 return htonl(OFPTC11_TABLE_MISS_DROP);
5244 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5245 * flags, so this is correct. */
5250 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5251 * OFPTC14_VACANCY_EVENTS. */
5252 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5253 config |= OFPTC14_EVICTION;
5255 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5256 config |= OFPTC14_VACANCY_EVENTS;
5258 return htonl(config);
5264 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5265 * table configuration (a table mod, table stats, or table features message),
5266 * returns the table miss configuration that it specifies.
5268 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5269 * other 'version' values this function always returns
5270 * OFPUTIL_TABLE_MISS_DEFAULT. */
5271 static enum ofputil_table_miss
5272 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5274 uint32_t config = ntohl(config_);
5276 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5277 switch (config & OFPTC11_TABLE_MISS_MASK) {
5278 case OFPTC11_TABLE_MISS_CONTROLLER:
5279 return OFPUTIL_TABLE_MISS_CONTROLLER;
5281 case OFPTC11_TABLE_MISS_CONTINUE:
5282 return OFPUTIL_TABLE_MISS_CONTINUE;
5284 case OFPTC11_TABLE_MISS_DROP:
5285 return OFPUTIL_TABLE_MISS_DROP;
5288 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5289 return OFPUTIL_TABLE_MISS_CONTROLLER;
5292 return OFPUTIL_TABLE_MISS_DEFAULT;
5296 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5297 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5299 ofputil_decode_table_mod(const struct ofp_header *oh,
5300 struct ofputil_table_mod *pm)
5305 memset(pm, 0, sizeof *pm);
5306 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5307 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5308 pm->eviction_flags = UINT32_MAX;
5309 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5310 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5311 raw = ofpraw_pull_assert(&b);
5313 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5314 const struct ofp11_table_mod *otm = b.data;
5316 pm->table_id = otm->table_id;
5317 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5318 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5319 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5321 pm->table_id = otm->table_id;
5322 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5323 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5324 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5325 while (b.size > 0) {
5326 struct ofpbuf property;
5330 error = ofpprop_pull(&b, &property, &type);
5336 case OFPTMPT14_EVICTION:
5337 error = ofpprop_parse_u32(&property, &pm->eviction);
5340 case OFPTMPT14_VACANCY:
5341 error = parse_table_mod_vacancy_property(&property, pm);
5345 error = OFPERR_OFPBRC_BAD_TYPE;
5354 return OFPERR_OFPBRC_BAD_TYPE;
5360 /* Converts the abstract form of a "table mod" message in '*tm' into an
5361 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5362 * buffer owned by the caller. */
5364 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5365 enum ofputil_protocol protocol)
5367 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5370 switch (ofp_version) {
5371 case OFP10_VERSION: {
5372 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5373 "(\'-O OpenFlow11\')");
5378 case OFP13_VERSION: {
5379 struct ofp11_table_mod *otm;
5381 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5382 otm = ofpbuf_put_zeros(b, sizeof *otm);
5383 otm->table_id = tm->table_id;
5384 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5385 tm->vacancy, ofp_version);
5389 case OFP15_VERSION: {
5390 struct ofp14_table_mod *otm;
5392 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5393 otm = ofpbuf_put_zeros(b, sizeof *otm);
5394 otm->table_id = tm->table_id;
5395 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5396 tm->vacancy, ofp_version);
5398 if (tm->eviction_flags != UINT32_MAX) {
5399 ofpprop_put_u32(b, OFPTMPT14_EVICTION, tm->eviction_flags);
5401 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5402 struct ofp14_table_mod_prop_vacancy *otv;
5404 otv = ofpprop_put_zeros(b, OFPTMPT14_VACANCY, sizeof *otv);
5405 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5406 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5417 /* ofputil_role_request */
5419 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5420 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5421 * OFPERR_* value. */
5423 ofputil_decode_role_message(const struct ofp_header *oh,
5424 struct ofputil_role_request *rr)
5429 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5430 raw = ofpraw_pull_assert(&b);
5432 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5433 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5434 const struct ofp12_role_request *orr = b.msg;
5436 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5437 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5438 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5439 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5440 return OFPERR_OFPRRFC_BAD_ROLE;
5443 rr->role = ntohl(orr->role);
5444 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5445 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5446 : orr->generation_id == OVS_BE64_MAX) {
5447 rr->have_generation_id = false;
5448 rr->generation_id = 0;
5450 rr->have_generation_id = true;
5451 rr->generation_id = ntohll(orr->generation_id);
5453 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5454 raw == OFPRAW_NXT_ROLE_REPLY) {
5455 const struct nx_role_request *nrr = b.msg;
5457 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5458 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5459 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5461 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5462 nrr->role != htonl(NX_ROLE_MASTER) &&
5463 nrr->role != htonl(NX_ROLE_SLAVE)) {
5464 return OFPERR_OFPRRFC_BAD_ROLE;
5467 rr->role = ntohl(nrr->role) + 1;
5468 rr->have_generation_id = false;
5469 rr->generation_id = 0;
5477 /* Returns an encoded form of a role reply suitable for the "request" in a
5478 * buffer owned by the caller. */
5480 ofputil_encode_role_reply(const struct ofp_header *request,
5481 const struct ofputil_role_request *rr)
5486 raw = ofpraw_decode_assert(request);
5487 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5488 struct ofp12_role_request *orr;
5490 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5491 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5493 orr->role = htonl(rr->role);
5494 orr->generation_id = htonll(rr->have_generation_id
5497 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5498 struct nx_role_request *nrr;
5500 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5501 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5502 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5504 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5505 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5506 nrr->role = htonl(rr->role - 1);
5514 /* Encodes "role status" message 'status' for sending in the given
5515 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5516 * otherwise a null pointer. */
5518 ofputil_encode_role_status(const struct ofputil_role_status *status,
5519 enum ofputil_protocol protocol)
5521 enum ofp_version version;
5523 version = ofputil_protocol_to_ofp_version(protocol);
5524 if (version >= OFP14_VERSION) {
5525 struct ofp14_role_status *rstatus;
5528 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5530 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5531 rstatus->role = htonl(status->role);
5532 rstatus->reason = status->reason;
5533 rstatus->generation_id = htonll(status->generation_id);
5542 ofputil_decode_role_status(const struct ofp_header *oh,
5543 struct ofputil_role_status *rs)
5547 const struct ofp14_role_status *r;
5549 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5550 raw = ofpraw_pull_assert(&b);
5551 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5554 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5555 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5556 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5557 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5558 return OFPERR_OFPRRFC_BAD_ROLE;
5561 rs->role = ntohl(r->role);
5562 rs->generation_id = ntohll(r->generation_id);
5563 rs->reason = r->reason;
5568 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5569 * 'protocol' must be for OpenFlow 1.4 or later. */
5571 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5572 enum ofputil_protocol protocol)
5574 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5575 struct ofpbuf *inner;
5577 switch (rf->reason) {
5578 case OFPRFR_GROUP_MOD:
5579 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5582 case OFPRFR_METER_MOD:
5583 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5586 case OFPRFR_N_REASONS:
5591 struct ofp_header *inner_oh = inner->data;
5592 inner_oh->xid = rf->xid;
5593 inner_oh->length = htons(inner->size);
5595 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5596 ofp_version, htonl(0),
5598 ofpbuf_put(outer, inner->data, inner->size);
5599 ofpbuf_delete(inner);
5604 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5605 * form into '*rf' and returns 0, and the caller is later responsible for
5606 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5607 * failure, returns an ofperr and '*rf' is indeterminate. */
5609 ofputil_decode_requestforward(const struct ofp_header *outer,
5610 struct ofputil_requestforward *rf)
5615 ofpbuf_use_const(&b, outer, ntohs(outer->length));
5617 /* Skip past outer message. */
5618 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5619 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5621 /* Validate inner message. */
5622 if (b.size < sizeof(struct ofp_header)) {
5623 return OFPERR_OFPBFC_MSG_BAD_LEN;
5625 const struct ofp_header *inner = b.data;
5626 unsigned int inner_len = ntohs(inner->length);
5627 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5628 return OFPERR_OFPBFC_MSG_BAD_LEN;
5630 if (inner->version != outer->version) {
5631 return OFPERR_OFPBRC_BAD_VERSION;
5634 /* Parse inner message. */
5636 error = ofptype_decode(&type, inner);
5641 rf->xid = inner->xid;
5642 if (type == OFPTYPE_GROUP_MOD) {
5643 rf->reason = OFPRFR_GROUP_MOD;
5644 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5645 error = ofputil_decode_group_mod(inner, rf->group_mod);
5647 free(rf->group_mod);
5650 } else if (type == OFPTYPE_METER_MOD) {
5651 rf->reason = OFPRFR_METER_MOD;
5652 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5653 ofpbuf_init(&rf->bands, 64);
5654 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5656 free(rf->meter_mod);
5657 ofpbuf_uninit(&rf->bands);
5661 return OFPERR_OFPBFC_MSG_UNSUP;
5667 /* Frees the content of 'rf', which should have been initialized through a
5668 * successful call to ofputil_decode_requestforward(). */
5670 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5676 switch (rf->reason) {
5677 case OFPRFR_GROUP_MOD:
5678 ofputil_uninit_group_mod(rf->group_mod);
5679 free(rf->group_mod);
5682 case OFPRFR_METER_MOD:
5683 ofpbuf_uninit(&rf->bands);
5684 free(rf->meter_mod);
5687 case OFPRFR_N_REASONS:
5694 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5695 * matched and a field that must be wildcarded. This function returns a bitmap
5696 * that contains both kinds of fields. */
5697 static struct mf_bitmap
5698 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5700 struct mf_bitmap wc = features->match;
5701 bitmap_not(wc.bm, MFF_N_IDS);
5702 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5706 struct ofp10_wc_map {
5707 enum ofp10_flow_wildcards wc10;
5708 enum mf_field_id mf;
5711 static const struct ofp10_wc_map ofp10_wc_map[] = {
5712 { OFPFW10_IN_PORT, MFF_IN_PORT },
5713 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5714 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5715 { OFPFW10_DL_DST, MFF_ETH_DST},
5716 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5717 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5718 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5719 { OFPFW10_TP_DST, MFF_TCP_DST },
5720 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5721 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5722 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5723 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5727 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5729 const struct ofp10_wc_map *p;
5732 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5733 if (bitmap_is_set(fields->bm, p->mf)) {
5740 static struct mf_bitmap
5741 mf_bitmap_from_of10(ovs_be32 wc10_)
5743 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5744 const struct ofp10_wc_map *p;
5745 uint32_t wc10 = ntohl(wc10_);
5747 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5748 if (wc10 & p->wc10) {
5749 bitmap_set1(fields.bm, p->mf);
5756 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5757 const struct ofputil_table_features *features,
5760 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5761 struct ofp10_table_stats *out;
5763 out = ofpbuf_put_zeros(buf, sizeof *out);
5764 out->table_id = features->table_id;
5765 ovs_strlcpy(out->name, features->name, sizeof out->name);
5766 out->wildcards = mf_bitmap_to_of10(&wc);
5767 out->max_entries = htonl(features->max_entries);
5768 out->active_count = htonl(stats->active_count);
5769 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5770 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5773 struct ofp11_wc_map {
5774 enum ofp11_flow_match_fields wc11;
5775 enum mf_field_id mf;
5778 static const struct ofp11_wc_map ofp11_wc_map[] = {
5779 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5780 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5781 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5782 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5783 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5784 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5785 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5786 { OFPFMF11_TP_DST, MFF_TCP_DST },
5787 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5788 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5789 /* I don't know what OFPFMF11_TYPE means. */
5790 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5791 { OFPFMF11_DL_DST, MFF_ETH_DST },
5792 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5793 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5794 { OFPFMF11_METADATA, MFF_METADATA },
5798 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5800 const struct ofp11_wc_map *p;
5803 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5804 if (bitmap_is_set(fields->bm, p->mf)) {
5811 static struct mf_bitmap
5812 mf_bitmap_from_of11(ovs_be32 wc11_)
5814 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5815 const struct ofp11_wc_map *p;
5816 uint32_t wc11 = ntohl(wc11_);
5818 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5819 if (wc11 & p->wc11) {
5820 bitmap_set1(fields.bm, p->mf);
5827 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5828 const struct ofputil_table_features *features,
5831 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5832 struct ofp11_table_stats *out;
5834 out = ofpbuf_put_zeros(buf, sizeof *out);
5835 out->table_id = features->table_id;
5836 ovs_strlcpy(out->name, features->name, sizeof out->name);
5837 out->wildcards = mf_bitmap_to_of11(&wc);
5838 out->match = mf_bitmap_to_of11(&features->match);
5839 out->instructions = ovsinst_bitmap_to_openflow(
5840 features->nonmiss.instructions, OFP11_VERSION);
5841 out->write_actions = ofpact_bitmap_to_openflow(
5842 features->nonmiss.write.ofpacts, OFP11_VERSION);
5843 out->apply_actions = ofpact_bitmap_to_openflow(
5844 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5845 out->config = htonl(features->miss_config);
5846 out->max_entries = htonl(features->max_entries);
5847 out->active_count = htonl(stats->active_count);
5848 out->lookup_count = htonll(stats->lookup_count);
5849 out->matched_count = htonll(stats->matched_count);
5853 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5854 const struct ofputil_table_features *features,
5857 struct ofp12_table_stats *out;
5859 out = ofpbuf_put_zeros(buf, sizeof *out);
5860 out->table_id = features->table_id;
5861 ovs_strlcpy(out->name, features->name, sizeof out->name);
5862 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5863 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5865 out->write_actions = ofpact_bitmap_to_openflow(
5866 features->nonmiss.write.ofpacts, OFP12_VERSION);
5867 out->apply_actions = ofpact_bitmap_to_openflow(
5868 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5869 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5870 &features->nonmiss.write.set_fields, OFP12_VERSION);
5871 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5872 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5873 out->metadata_match = features->metadata_match;
5874 out->metadata_write = features->metadata_write;
5875 out->instructions = ovsinst_bitmap_to_openflow(
5876 features->nonmiss.instructions, OFP12_VERSION);
5877 out->config = ofputil_encode_table_config(features->miss_config,
5878 OFPUTIL_TABLE_EVICTION_DEFAULT,
5879 OFPUTIL_TABLE_VACANCY_DEFAULT,
5881 out->max_entries = htonl(features->max_entries);
5882 out->active_count = htonl(stats->active_count);
5883 out->lookup_count = htonll(stats->lookup_count);
5884 out->matched_count = htonll(stats->matched_count);
5888 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5891 struct ofp13_table_stats *out;
5893 out = ofpbuf_put_zeros(buf, sizeof *out);
5894 out->table_id = stats->table_id;
5895 out->active_count = htonl(stats->active_count);
5896 out->lookup_count = htonll(stats->lookup_count);
5897 out->matched_count = htonll(stats->matched_count);
5901 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5903 return ofpraw_alloc_stats_reply(request, 0);
5907 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5908 const struct ofputil_table_stats *stats,
5909 const struct ofputil_table_features *features)
5911 struct ofp_header *oh = reply->header;
5913 ovs_assert(stats->table_id == features->table_id);
5915 switch ((enum ofp_version) oh->version) {
5917 ofputil_put_ofp10_table_stats(stats, features, reply);
5921 ofputil_put_ofp11_table_stats(stats, features, reply);
5925 ofputil_put_ofp12_table_stats(stats, features, reply);
5931 ofputil_put_ofp13_table_stats(stats, reply);
5940 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5941 struct ofputil_table_stats *stats,
5942 struct ofputil_table_features *features)
5944 struct ofp10_table_stats *ots;
5946 ots = ofpbuf_try_pull(msg, sizeof *ots);
5948 return OFPERR_OFPBRC_BAD_LEN;
5951 features->table_id = ots->table_id;
5952 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5953 features->max_entries = ntohl(ots->max_entries);
5954 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5956 stats->table_id = ots->table_id;
5957 stats->active_count = ntohl(ots->active_count);
5958 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5959 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5965 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5966 struct ofputil_table_stats *stats,
5967 struct ofputil_table_features *features)
5969 struct ofp11_table_stats *ots;
5971 ots = ofpbuf_try_pull(msg, sizeof *ots);
5973 return OFPERR_OFPBRC_BAD_LEN;
5976 features->table_id = ots->table_id;
5977 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5978 features->max_entries = ntohl(ots->max_entries);
5979 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5980 ots->instructions, OFP11_VERSION);
5981 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5982 ots->write_actions, OFP11_VERSION);
5983 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5984 ots->write_actions, OFP11_VERSION);
5985 features->miss = features->nonmiss;
5986 features->miss_config = ofputil_decode_table_miss(ots->config,
5988 features->match = mf_bitmap_from_of11(ots->match);
5989 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5990 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5992 stats->table_id = ots->table_id;
5993 stats->active_count = ntohl(ots->active_count);
5994 stats->lookup_count = ntohll(ots->lookup_count);
5995 stats->matched_count = ntohll(ots->matched_count);
6001 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
6002 struct ofputil_table_stats *stats,
6003 struct ofputil_table_features *features)
6005 struct ofp12_table_stats *ots;
6007 ots = ofpbuf_try_pull(msg, sizeof *ots);
6009 return OFPERR_OFPBRC_BAD_LEN;
6012 features->table_id = ots->table_id;
6013 ovs_strlcpy(features->name, ots->name, sizeof features->name);
6014 features->metadata_match = ots->metadata_match;
6015 features->metadata_write = ots->metadata_write;
6016 features->miss_config = ofputil_decode_table_miss(ots->config,
6018 features->max_entries = ntohl(ots->max_entries);
6020 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
6021 ots->instructions, OFP12_VERSION);
6022 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
6023 ots->write_actions, OFP12_VERSION);
6024 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
6025 ots->apply_actions, OFP12_VERSION);
6026 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
6027 ots->write_setfields, OFP12_VERSION);
6028 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
6029 ots->apply_setfields, OFP12_VERSION);
6030 features->miss = features->nonmiss;
6032 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
6033 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
6035 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
6037 stats->table_id = ots->table_id;
6038 stats->active_count = ntohl(ots->active_count);
6039 stats->lookup_count = ntohll(ots->lookup_count);
6040 stats->matched_count = ntohll(ots->matched_count);
6046 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
6047 struct ofputil_table_stats *stats,
6048 struct ofputil_table_features *features)
6050 struct ofp13_table_stats *ots;
6052 ots = ofpbuf_try_pull(msg, sizeof *ots);
6054 return OFPERR_OFPBRC_BAD_LEN;
6057 features->table_id = ots->table_id;
6059 stats->table_id = ots->table_id;
6060 stats->active_count = ntohl(ots->active_count);
6061 stats->lookup_count = ntohll(ots->lookup_count);
6062 stats->matched_count = ntohll(ots->matched_count);
6068 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
6069 struct ofputil_table_stats *stats,
6070 struct ofputil_table_features *features)
6072 const struct ofp_header *oh;
6075 ofpraw_pull_assert(msg);
6083 memset(stats, 0, sizeof *stats);
6084 memset(features, 0, sizeof *features);
6085 features->supports_eviction = -1;
6086 features->supports_vacancy_events = -1;
6088 switch ((enum ofp_version) oh->version) {
6090 return ofputil_decode_ofp10_table_stats(msg, stats, features);
6093 return ofputil_decode_ofp11_table_stats(msg, stats, features);
6096 return ofputil_decode_ofp12_table_stats(msg, stats, features);
6101 return ofputil_decode_ofp13_table_stats(msg, stats, features);
6108 /* ofputil_flow_monitor_request */
6110 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
6111 * ofputil_flow_monitor_request in 'rq'.
6113 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6114 * message. Calling this function multiple times for a single 'msg' iterates
6115 * through the requests. The caller must initially leave 'msg''s layer
6116 * pointers null and not modify them between calls.
6118 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6119 * otherwise an OFPERR_* value. */
6121 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6124 struct nx_flow_monitor_request *nfmr;
6128 ofpraw_pull_assert(msg);
6135 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6137 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6138 "leftover bytes at end", msg->size);
6139 return OFPERR_OFPBRC_BAD_LEN;
6142 flags = ntohs(nfmr->flags);
6143 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6144 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6145 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6146 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6148 return OFPERR_OFPMOFC_BAD_FLAGS;
6151 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6152 return OFPERR_NXBRC_MUST_BE_ZERO;
6155 rq->id = ntohl(nfmr->id);
6157 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6158 rq->table_id = nfmr->table_id;
6160 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6164 ofputil_append_flow_monitor_request(
6165 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6167 struct nx_flow_monitor_request *nfmr;
6172 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6175 start_ofs = msg->size;
6176 ofpbuf_put_zeros(msg, sizeof *nfmr);
6177 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6179 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6180 nfmr->id = htonl(rq->id);
6181 nfmr->flags = htons(rq->flags);
6182 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6183 nfmr->match_len = htons(match_len);
6184 nfmr->table_id = rq->table_id;
6187 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6188 * into an abstract ofputil_flow_update in 'update'. The caller must have
6189 * initialized update->match to point to space allocated for a match.
6191 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6192 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6193 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6194 * will point into the 'ofpacts' buffer.
6196 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6197 * this function multiple times for a single 'msg' iterates through the
6198 * updates. The caller must initially leave 'msg''s layer pointers null and
6199 * not modify them between calls.
6201 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6202 * otherwise an OFPERR_* value. */
6204 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6205 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6207 struct nx_flow_update_header *nfuh;
6208 unsigned int length;
6209 struct ofp_header *oh;
6212 ofpraw_pull_assert(msg);
6215 ofpbuf_clear(ofpacts);
6220 if (msg->size < sizeof(struct nx_flow_update_header)) {
6227 update->event = ntohs(nfuh->event);
6228 length = ntohs(nfuh->length);
6229 if (length > msg->size || length % 8) {
6233 if (update->event == NXFME_ABBREV) {
6234 struct nx_flow_update_abbrev *nfua;
6236 if (length != sizeof *nfua) {
6240 nfua = ofpbuf_pull(msg, sizeof *nfua);
6241 update->xid = nfua->xid;
6243 } else if (update->event == NXFME_ADDED
6244 || update->event == NXFME_DELETED
6245 || update->event == NXFME_MODIFIED) {
6246 struct nx_flow_update_full *nfuf;
6247 unsigned int actions_len;
6248 unsigned int match_len;
6251 if (length < sizeof *nfuf) {
6255 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6256 match_len = ntohs(nfuf->match_len);
6257 if (sizeof *nfuf + match_len > length) {
6261 update->reason = ntohs(nfuf->reason);
6262 update->idle_timeout = ntohs(nfuf->idle_timeout);
6263 update->hard_timeout = ntohs(nfuf->hard_timeout);
6264 update->table_id = nfuf->table_id;
6265 update->cookie = nfuf->cookie;
6266 update->priority = ntohs(nfuf->priority);
6268 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6273 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6274 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6280 update->ofpacts = ofpacts->data;
6281 update->ofpacts_len = ofpacts->size;
6284 VLOG_WARN_RL(&bad_ofmsg_rl,
6285 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6286 ntohs(nfuh->event));
6287 return OFPERR_NXBRC_FM_BAD_EVENT;
6291 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6292 "leftover bytes at end", msg->size);
6293 return OFPERR_OFPBRC_BAD_LEN;
6297 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6299 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6301 return ntohl(cancel->id);
6305 ofputil_encode_flow_monitor_cancel(uint32_t id)
6307 struct nx_flow_monitor_cancel *nfmc;
6310 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6311 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6312 nfmc->id = htonl(id);
6317 ofputil_start_flow_update(struct ovs_list *replies)
6321 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6325 list_push_back(replies, &msg->list_node);
6329 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6330 struct ovs_list *replies)
6332 enum ofp_version version = ofpmp_version(replies);
6333 struct nx_flow_update_header *nfuh;
6337 msg = ofpbuf_from_list(list_back(replies));
6338 start_ofs = msg->size;
6340 if (update->event == NXFME_ABBREV) {
6341 struct nx_flow_update_abbrev *nfua;
6343 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6344 nfua->xid = update->xid;
6346 struct nx_flow_update_full *nfuf;
6349 ofpbuf_put_zeros(msg, sizeof *nfuf);
6350 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6351 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6353 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6354 nfuf->reason = htons(update->reason);
6355 nfuf->priority = htons(update->priority);
6356 nfuf->idle_timeout = htons(update->idle_timeout);
6357 nfuf->hard_timeout = htons(update->hard_timeout);
6358 nfuf->match_len = htons(match_len);
6359 nfuf->table_id = update->table_id;
6360 nfuf->cookie = update->cookie;
6363 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6364 nfuh->length = htons(msg->size - start_ofs);
6365 nfuh->event = htons(update->event);
6367 ofpmp_postappend(replies, start_ofs);
6371 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6372 enum ofputil_protocol protocol)
6374 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6378 size = po->ofpacts_len;
6379 if (po->buffer_id == UINT32_MAX) {
6380 size += po->packet_len;
6383 switch (ofp_version) {
6384 case OFP10_VERSION: {
6385 struct ofp10_packet_out *opo;
6388 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6389 ofpbuf_put_zeros(msg, sizeof *opo);
6390 actions_ofs = msg->size;
6391 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6395 opo->buffer_id = htonl(po->buffer_id);
6396 opo->in_port = htons(ofp_to_u16(po->in_port));
6397 opo->actions_len = htons(msg->size - actions_ofs);
6405 case OFP15_VERSION: {
6406 struct ofp11_packet_out *opo;
6409 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6410 ofpbuf_put_zeros(msg, sizeof *opo);
6411 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6414 opo->buffer_id = htonl(po->buffer_id);
6415 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6416 opo->actions_len = htons(len);
6424 if (po->buffer_id == UINT32_MAX) {
6425 ofpbuf_put(msg, po->packet, po->packet_len);
6428 ofpmsg_update_length(msg);
6433 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6435 make_echo_request(enum ofp_version ofp_version)
6437 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6441 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6442 * OFPT_ECHO_REQUEST message in 'rq'. */
6444 make_echo_reply(const struct ofp_header *rq)
6446 struct ofpbuf rq_buf;
6447 struct ofpbuf *reply;
6449 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6450 ofpraw_pull_assert(&rq_buf);
6452 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
6453 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6458 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6462 switch (ofp_version) {
6468 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6472 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6479 return ofpraw_alloc(type, ofp_version, 0);
6483 ofputil_frag_handling_to_string(enum ofputil_frag_handling frag)
6486 case OFPUTIL_FRAG_NORMAL: return "normal";
6487 case OFPUTIL_FRAG_DROP: return "drop";
6488 case OFPUTIL_FRAG_REASM: return "reassemble";
6489 case OFPUTIL_FRAG_NX_MATCH: return "nx-match";
6496 ofputil_frag_handling_from_string(const char *s,
6497 enum ofputil_frag_handling *frag)
6499 if (!strcasecmp(s, "normal")) {
6500 *frag = OFPUTIL_FRAG_NORMAL;
6501 } else if (!strcasecmp(s, "drop")) {
6502 *frag = OFPUTIL_FRAG_DROP;
6503 } else if (!strcasecmp(s, "reassemble")) {
6504 *frag = OFPUTIL_FRAG_REASM;
6505 } else if (!strcasecmp(s, "nx-match")) {
6506 *frag = OFPUTIL_FRAG_NX_MATCH;
6513 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6514 * port number and stores the latter in '*ofp10_port', for the purpose of
6515 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6516 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6518 * See the definition of OFP11_MAX for an explanation of the mapping. */
6520 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6522 uint32_t ofp11_port_h = ntohl(ofp11_port);
6524 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6525 *ofp10_port = u16_to_ofp(ofp11_port_h);
6527 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6528 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6531 *ofp10_port = OFPP_NONE;
6532 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6533 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6534 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6535 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6536 return OFPERR_OFPBAC_BAD_OUT_PORT;
6540 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6541 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6543 * See the definition of OFP11_MAX for an explanation of the mapping. */
6545 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6547 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6548 ? ofp_to_u16(ofp10_port)
6549 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6552 #define OFPUTIL_NAMED_PORTS \
6553 OFPUTIL_NAMED_PORT(IN_PORT) \
6554 OFPUTIL_NAMED_PORT(TABLE) \
6555 OFPUTIL_NAMED_PORT(NORMAL) \
6556 OFPUTIL_NAMED_PORT(FLOOD) \
6557 OFPUTIL_NAMED_PORT(ALL) \
6558 OFPUTIL_NAMED_PORT(CONTROLLER) \
6559 OFPUTIL_NAMED_PORT(LOCAL) \
6560 OFPUTIL_NAMED_PORT(ANY) \
6561 OFPUTIL_NAMED_PORT(UNSET)
6563 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6564 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6565 OFPUTIL_NAMED_PORTS \
6566 OFPUTIL_NAMED_PORT(NONE)
6568 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6569 * integer or, for reserved ports, the standard OpenFlow name for the port
6572 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6573 * or name. The caller should issue an error message in this case, because
6574 * this function usually does not. (This gives the caller an opportunity to
6575 * look up the port name another way, e.g. by contacting the switch and listing
6576 * the names of all its ports).
6578 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6579 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6580 * range as described in include/openflow/openflow-1.1.h. */
6582 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6584 unsigned int port32; /* int is at least 32 bits wide. */
6587 VLOG_WARN("Negative value %s is not a valid port number.", s);
6591 if (str_to_uint(s, 10, &port32)) {
6592 if (port32 < ofp_to_u16(OFPP_MAX)) {
6594 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6595 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6596 "be translated to %u when talking to an OF1.1 or "
6597 "later controller", port32, port32 + OFPP11_OFFSET);
6598 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6599 char name[OFP_MAX_PORT_NAME_LEN];
6601 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6602 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6603 "for compatibility with OpenFlow 1.1 and later",
6605 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6606 VLOG_WARN("port %u is outside the supported range 0 through "
6607 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6608 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6611 port32 -= OFPP11_OFFSET;
6614 *portp = u16_to_ofp(port32);
6621 static const struct pair pairs[] = {
6622 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6623 OFPUTIL_NAMED_PORTS_WITH_NONE
6624 #undef OFPUTIL_NAMED_PORT
6626 const struct pair *p;
6628 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6629 if (!strcasecmp(s, p->name)) {
6638 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6639 * Most ports' string representation is just the port number, but for special
6640 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6642 ofputil_format_port(ofp_port_t port, struct ds *s)
6644 char name[OFP_MAX_PORT_NAME_LEN];
6646 ofputil_port_to_string(port, name, sizeof name);
6647 ds_put_cstr(s, name);
6650 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6651 * representation of OpenFlow port number 'port'. Most ports are represented
6652 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6653 * by name, e.g. "LOCAL". */
6655 ofputil_port_to_string(ofp_port_t port,
6656 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6659 #define OFPUTIL_NAMED_PORT(NAME) \
6661 ovs_strlcpy(namebuf, #NAME, bufsize); \
6664 #undef OFPUTIL_NAMED_PORT
6667 snprintf(namebuf, bufsize, "%"PRIu16, port);
6672 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6673 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6674 * (either "ANY" or "ALL").
6676 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6679 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6681 if (!strcasecmp(s, "any")) {
6682 *group_idp = OFPG_ANY;
6683 } else if (!strcasecmp(s, "all")) {
6684 *group_idp = OFPG_ALL;
6685 } else if (!str_to_uint(s, 10, group_idp)) {
6686 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6687 "32-bit nonnegative integers or the keywords ANY or "
6695 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6696 * Most groups' string representation is just the number, but for special
6697 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6699 ofputil_format_group(uint32_t group_id, struct ds *s)
6701 char name[MAX_GROUP_NAME_LEN];
6703 ofputil_group_to_string(group_id, name, sizeof name);
6704 ds_put_cstr(s, name);
6708 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6709 * representation of OpenFlow group ID 'group_id'. Most group are represented
6710 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6711 * by name, e.g. "ALL". */
6713 ofputil_group_to_string(uint32_t group_id,
6714 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6718 ovs_strlcpy(namebuf, "ALL", bufsize);
6722 ovs_strlcpy(namebuf, "ANY", bufsize);
6726 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6731 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6732 * 'ofp_version', tries to pull the first element from the array. If
6733 * successful, initializes '*pp' with an abstract representation of the
6734 * port and returns 0. If no ports remain to be decoded, returns EOF.
6735 * On an error, returns a positive OFPERR_* value. */
6737 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6738 struct ofputil_phy_port *pp)
6740 memset(pp, 0, sizeof *pp);
6742 switch (ofp_version) {
6743 case OFP10_VERSION: {
6744 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6745 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6749 case OFP13_VERSION: {
6750 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6751 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6755 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6762 ofputil_normalize_match__(struct match *match, bool may_log)
6765 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6766 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6767 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6768 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6769 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6770 MAY_ARP_THA = 1 << 5, /* arp_tha */
6771 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6772 MAY_ND_TARGET = 1 << 7, /* nd_target */
6773 MAY_MPLS = 1 << 8, /* mpls label and tc */
6776 struct flow_wildcards wc;
6778 /* Figure out what fields may be matched. */
6779 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6780 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6781 if (match->flow.nw_proto == IPPROTO_TCP ||
6782 match->flow.nw_proto == IPPROTO_UDP ||
6783 match->flow.nw_proto == IPPROTO_SCTP ||
6784 match->flow.nw_proto == IPPROTO_ICMP) {
6785 may_match |= MAY_TP_ADDR;
6787 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6788 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6789 if (match->flow.nw_proto == IPPROTO_TCP ||
6790 match->flow.nw_proto == IPPROTO_UDP ||
6791 match->flow.nw_proto == IPPROTO_SCTP) {
6792 may_match |= MAY_TP_ADDR;
6793 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6794 may_match |= MAY_TP_ADDR;
6795 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6796 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6797 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6798 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6801 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6802 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6803 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6804 } else if (eth_type_mpls(match->flow.dl_type)) {
6805 may_match = MAY_MPLS;
6810 /* Clear the fields that may not be matched. */
6812 if (!(may_match & MAY_NW_ADDR)) {
6813 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6815 if (!(may_match & MAY_TP_ADDR)) {
6816 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6818 if (!(may_match & MAY_NW_PROTO)) {
6819 wc.masks.nw_proto = 0;
6821 if (!(may_match & MAY_IPVx)) {
6822 wc.masks.nw_tos = 0;
6823 wc.masks.nw_ttl = 0;
6825 if (!(may_match & MAY_ARP_SHA)) {
6826 WC_UNMASK_FIELD(&wc, arp_sha);
6828 if (!(may_match & MAY_ARP_THA)) {
6829 WC_UNMASK_FIELD(&wc, arp_tha);
6831 if (!(may_match & MAY_IPV6)) {
6832 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6833 wc.masks.ipv6_label = htonl(0);
6835 if (!(may_match & MAY_ND_TARGET)) {
6836 wc.masks.nd_target = in6addr_any;
6838 if (!(may_match & MAY_MPLS)) {
6839 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6842 /* Log any changes. */
6843 if (!flow_wildcards_equal(&wc, &match->wc)) {
6844 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6845 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6848 match_zero_wildcarded_fields(match);
6851 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6852 VLOG_INFO("normalization changed ofp_match, details:");
6853 VLOG_INFO(" pre: %s", pre);
6854 VLOG_INFO("post: %s", post);
6861 /* "Normalizes" the wildcards in 'match'. That means:
6863 * 1. If the type of level N is known, then only the valid fields for that
6864 * level may be specified. For example, ARP does not have a TOS field,
6865 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6866 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6867 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6870 * 2. If the type of level N is not known (or not understood by Open
6871 * vSwitch), then no fields at all for that level may be specified. For
6872 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6873 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6876 * If this function changes 'match', it logs a rate-limited informational
6879 ofputil_normalize_match(struct match *match)
6881 ofputil_normalize_match__(match, true);
6884 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6885 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6886 * sense for use on flows received from elsewhere (so that a bug in the program
6887 * that sent them can be reported and corrected). */
6889 ofputil_normalize_match_quiet(struct match *match)
6891 ofputil_normalize_match__(match, false);
6894 /* Parses a key or a key-value pair from '*stringp'.
6896 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6897 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6898 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6899 * are substrings of '*stringp' created by replacing some of its bytes by null
6900 * terminators. Returns true.
6902 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6903 * NULL and returns false. */
6905 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6907 char *pos, *key, *value;
6911 pos += strspn(pos, ", \t\r\n");
6913 *keyp = *valuep = NULL;
6918 key_len = strcspn(pos, ":=(, \t\r\n");
6919 if (key[key_len] == ':' || key[key_len] == '=') {
6920 /* The value can be separated by a colon. */
6923 value = key + key_len + 1;
6924 value_len = strcspn(value, ", \t\r\n");
6925 pos = value + value_len + (value[value_len] != '\0');
6926 value[value_len] = '\0';
6927 } else if (key[key_len] == '(') {
6928 /* The value can be surrounded by balanced parentheses. The outermost
6929 * set of parentheses is removed. */
6933 value = key + key_len + 1;
6934 for (value_len = 0; level > 0; value_len++) {
6935 switch (value[value_len]) {
6949 value[value_len - 1] = '\0';
6950 pos = value + value_len;
6952 /* There might be no value at all. */
6953 value = key + key_len; /* Will become the empty string below. */
6954 pos = key + key_len + (key[key_len] != '\0');
6956 key[key_len] = '\0';
6964 /* Encode a dump ports request for 'port', the encoded message
6965 * will be for OpenFlow version 'ofp_version'. Returns message
6966 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6968 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6970 struct ofpbuf *request;
6972 switch (ofp_version) {
6973 case OFP10_VERSION: {
6974 struct ofp10_port_stats_request *req;
6975 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6976 req = ofpbuf_put_zeros(request, sizeof *req);
6977 req->port_no = htons(ofp_to_u16(port));
6984 case OFP15_VERSION: {
6985 struct ofp11_port_stats_request *req;
6986 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6987 req = ofpbuf_put_zeros(request, sizeof *req);
6988 req->port_no = ofputil_port_to_ofp11(port);
6999 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
7000 struct ofp10_port_stats *ps10)
7002 ps10->port_no = htons(ofp_to_u16(ops->port_no));
7003 memset(ps10->pad, 0, sizeof ps10->pad);
7004 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
7005 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
7006 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
7007 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
7008 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
7009 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
7010 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
7011 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
7012 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
7013 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
7014 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
7015 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
7019 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
7020 struct ofp11_port_stats *ps11)
7022 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
7023 memset(ps11->pad, 0, sizeof ps11->pad);
7024 ps11->rx_packets = htonll(ops->stats.rx_packets);
7025 ps11->tx_packets = htonll(ops->stats.tx_packets);
7026 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
7027 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
7028 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
7029 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
7030 ps11->rx_errors = htonll(ops->stats.rx_errors);
7031 ps11->tx_errors = htonll(ops->stats.tx_errors);
7032 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7033 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
7034 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7035 ps11->collisions = htonll(ops->stats.collisions);
7039 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
7040 struct ofp13_port_stats *ps13)
7042 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
7043 ps13->duration_sec = htonl(ops->duration_sec);
7044 ps13->duration_nsec = htonl(ops->duration_nsec);
7048 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
7049 struct ovs_list *replies)
7051 struct ofp14_port_stats_prop_ethernet *eth;
7052 struct ofp14_port_stats *ps14;
7053 struct ofpbuf *reply;
7055 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
7057 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
7058 ps14->length = htons(sizeof *ps14 + sizeof *eth);
7059 memset(ps14->pad, 0, sizeof ps14->pad);
7060 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
7061 ps14->duration_sec = htonl(ops->duration_sec);
7062 ps14->duration_nsec = htonl(ops->duration_nsec);
7063 ps14->rx_packets = htonll(ops->stats.rx_packets);
7064 ps14->tx_packets = htonll(ops->stats.tx_packets);
7065 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
7066 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
7067 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
7068 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
7069 ps14->rx_errors = htonll(ops->stats.rx_errors);
7070 ps14->tx_errors = htonll(ops->stats.tx_errors);
7072 eth = ofpprop_put_zeros(reply, OFPPSPT14_ETHERNET, sizeof *eth);
7073 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7074 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
7075 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7076 eth->collisions = htonll(ops->stats.collisions);
7079 /* Encode a ports stat for 'ops' and append it to 'replies'. */
7081 ofputil_append_port_stat(struct ovs_list *replies,
7082 const struct ofputil_port_stats *ops)
7084 switch (ofpmp_version(replies)) {
7085 case OFP13_VERSION: {
7086 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7087 ofputil_port_stats_to_ofp13(ops, reply);
7091 case OFP11_VERSION: {
7092 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7093 ofputil_port_stats_to_ofp11(ops, reply);
7097 case OFP10_VERSION: {
7098 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7099 ofputil_port_stats_to_ofp10(ops, reply);
7105 ofputil_append_ofp14_port_stats(ops, replies);
7114 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7115 const struct ofp10_port_stats *ps10)
7117 memset(ops, 0, sizeof *ops);
7119 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7120 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7121 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7122 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7123 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7124 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7125 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7126 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7127 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7128 ops->stats.rx_frame_errors =
7129 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7130 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7131 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7132 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7133 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7139 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7140 const struct ofp11_port_stats *ps11)
7144 memset(ops, 0, sizeof *ops);
7145 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7150 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7151 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7152 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7153 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7154 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7155 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7156 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7157 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7158 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7159 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7160 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7161 ops->stats.collisions = ntohll(ps11->collisions);
7162 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7168 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7169 const struct ofp13_port_stats *ps13)
7171 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7173 ops->duration_sec = ntohl(ps13->duration_sec);
7174 ops->duration_nsec = ntohl(ps13->duration_nsec);
7180 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7181 struct ofputil_port_stats *ops)
7183 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7185 if (payload->size != sizeof *eth) {
7186 return OFPERR_OFPBPC_BAD_LEN;
7189 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7190 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7191 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7192 ops->stats.collisions = ntohll(eth->collisions);
7198 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7201 const struct ofp14_port_stats *ps14;
7202 struct ofpbuf properties;
7206 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7208 return OFPERR_OFPBRC_BAD_LEN;
7211 len = ntohs(ps14->length);
7212 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7213 return OFPERR_OFPBRC_BAD_LEN;
7215 len -= sizeof *ps14;
7216 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
7218 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7223 ops->duration_sec = ntohl(ps14->duration_sec);
7224 ops->duration_nsec = ntohl(ps14->duration_nsec);
7225 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7226 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7227 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7228 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7229 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7230 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7231 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7232 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7233 ops->stats.rx_frame_errors = UINT64_MAX;
7234 ops->stats.rx_over_errors = UINT64_MAX;
7235 ops->stats.rx_crc_errors = UINT64_MAX;
7236 ops->stats.collisions = UINT64_MAX;
7238 while (properties.size > 0) {
7239 struct ofpbuf payload;
7243 error = ofpprop_pull(&properties, &payload, &type);
7249 case OFPPSPT14_ETHERNET:
7250 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7254 error = OFPPROP_UNKNOWN(true, "port stats", type);
7266 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7269 ofputil_count_port_stats(const struct ofp_header *oh)
7271 struct ofputil_port_stats ps;
7275 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7276 ofpraw_pull_assert(&b);
7277 while (!ofputil_decode_port_stats(&ps, &b)) {
7283 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7284 * ofputil_port_stats in 'ps'.
7286 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7287 * message. Calling this function multiple times for a single 'msg' iterates
7288 * through the replies. The caller must initially leave 'msg''s layer pointers
7289 * null and not modify them between calls.
7291 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7292 * otherwise a positive errno value. */
7294 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7299 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7300 : ofpraw_pull(&raw, msg));
7307 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7308 return ofputil_pull_ofp14_port_stats(ps, msg);
7309 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7310 const struct ofp13_port_stats *ps13;
7312 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7316 return ofputil_port_stats_from_ofp13(ps, ps13);
7317 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7318 const struct ofp11_port_stats *ps11;
7320 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7324 return ofputil_port_stats_from_ofp11(ps, ps11);
7325 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7326 const struct ofp10_port_stats *ps10;
7328 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7332 return ofputil_port_stats_from_ofp10(ps, ps10);
7338 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7339 "bytes at end", msg->size);
7340 return OFPERR_OFPBRC_BAD_LEN;
7343 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7344 * port number and stores the latter in '*ofp10_port'.
7345 * Returns 0 if successful, otherwise an OFPERR_* number. */
7347 ofputil_decode_port_stats_request(const struct ofp_header *request,
7348 ofp_port_t *ofp10_port)
7350 switch ((enum ofp_version)request->version) {
7355 case OFP11_VERSION: {
7356 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7357 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7360 case OFP10_VERSION: {
7361 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7362 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7371 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7373 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7375 struct ofputil_bucket *bucket;
7377 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7378 free(bucket->ofpacts);
7383 /* Clones 'bucket' and its ofpacts data */
7384 static struct ofputil_bucket *
7385 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7387 struct ofputil_bucket *new;
7389 new = xmemdup(bucket, sizeof *bucket);
7390 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7395 /* Clones each of the buckets in the list 'src' appending them
7396 * in turn to 'dest' which should be an initialised list.
7397 * An exception is that if the pointer value of a bucket in 'src'
7398 * matches 'skip' then it is not cloned or appended to 'dest'.
7399 * This allows all of 'src' or 'all of 'src' except 'skip' to
7400 * be cloned and appended to 'dest'. */
7402 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7403 const struct ofputil_bucket *skip)
7405 struct ofputil_bucket *bucket;
7407 LIST_FOR_EACH (bucket, list_node, src) {
7408 struct ofputil_bucket *new_bucket;
7410 if (bucket == skip) {
7414 new_bucket = ofputil_bucket_clone_data(bucket);
7415 list_push_back(dest, &new_bucket->list_node);
7419 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7420 * Returns the first bucket found or NULL if no buckets are found. */
7421 struct ofputil_bucket *
7422 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7424 struct ofputil_bucket *bucket;
7426 if (bucket_id > OFPG15_BUCKET_MAX) {
7430 LIST_FOR_EACH (bucket, list_node, buckets) {
7431 if (bucket->bucket_id == bucket_id) {
7439 /* Returns true if more than one bucket in the list 'buckets'
7440 * have the same bucket id. Returns false otherwise. */
7442 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7444 struct ofputil_bucket *i, *j;
7446 LIST_FOR_EACH (i, list_node, buckets) {
7447 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7451 if (i->bucket_id == j->bucket_id) {
7460 /* Returns the bucket at the front of the list 'buckets'.
7461 * Undefined if 'buckets is empty. */
7462 struct ofputil_bucket *
7463 ofputil_bucket_list_front(const struct ovs_list *buckets)
7465 static struct ofputil_bucket *bucket;
7467 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7472 /* Returns the bucket at the back of the list 'buckets'.
7473 * Undefined if 'buckets is empty. */
7474 struct ofputil_bucket *
7475 ofputil_bucket_list_back(const struct ovs_list *buckets)
7477 static struct ofputil_bucket *bucket;
7479 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7484 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7485 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7488 * Group statistics include packet and byte counts for each group. */
7490 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7493 struct ofpbuf *request;
7495 switch (ofp_version) {
7497 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7498 "(\'-O OpenFlow11\')");
7503 case OFP15_VERSION: {
7504 struct ofp11_group_stats_request *req;
7505 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7506 req = ofpbuf_put_zeros(request, sizeof *req);
7507 req->group_id = htonl(group_id);
7518 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7520 ofputil_bucket_list_destroy(&gd->buckets);
7521 free(&gd->props.fields);
7524 /* Decodes the OpenFlow group description request in 'oh', returning the group
7525 * whose description is requested, or OFPG_ALL if stats for all groups was
7528 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7530 struct ofpbuf request;
7533 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7534 raw = ofpraw_pull_assert(&request);
7535 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7537 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7538 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7539 return ntohl(*group_id);
7545 /* Returns an OpenFlow group description request for OpenFlow version
7546 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7547 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7550 * Group descriptions include the bucket and action configuration for each
7553 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7556 struct ofpbuf *request;
7558 switch (ofp_version) {
7560 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7561 "(\'-O OpenFlow11\')");
7566 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7569 case OFP15_VERSION:{
7570 struct ofp15_group_desc_request *req;
7571 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7573 req = ofpbuf_put_zeros(request, sizeof *req);
7574 req->group_id = htonl(group_id);
7585 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7586 struct ofp11_bucket_counter bucket_cnts[])
7590 for (i = 0; i < gs->n_buckets; i++) {
7591 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7592 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7597 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7598 struct ofp11_group_stats *gs11, size_t length,
7599 struct ofp11_bucket_counter bucket_cnts[])
7601 memset(gs11, 0, sizeof *gs11);
7602 gs11->length = htons(length);
7603 gs11->group_id = htonl(gs->group_id);
7604 gs11->ref_count = htonl(gs->ref_count);
7605 gs11->packet_count = htonll(gs->packet_count);
7606 gs11->byte_count = htonll(gs->byte_count);
7607 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7611 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7612 struct ofp13_group_stats *gs13, size_t length,
7613 struct ofp11_bucket_counter bucket_cnts[])
7615 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7616 gs13->duration_sec = htonl(gs->duration_sec);
7617 gs13->duration_nsec = htonl(gs->duration_nsec);
7621 /* Encodes 'gs' properly for the format of the list of group statistics
7622 * replies already begun in 'replies' and appends it to the list. 'replies'
7623 * must have originally been initialized with ofpmp_init(). */
7625 ofputil_append_group_stats(struct ovs_list *replies,
7626 const struct ofputil_group_stats *gs)
7628 size_t bucket_counter_size;
7629 struct ofp11_bucket_counter *bucket_counters;
7632 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7634 switch (ofpmp_version(replies)) {
7636 case OFP12_VERSION:{
7637 struct ofp11_group_stats *gs11;
7639 length = sizeof *gs11 + bucket_counter_size;
7640 gs11 = ofpmp_append(replies, length);
7641 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7642 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7648 case OFP15_VERSION: {
7649 struct ofp13_group_stats *gs13;
7651 length = sizeof *gs13 + bucket_counter_size;
7652 gs13 = ofpmp_append(replies, length);
7653 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7654 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7663 /* Returns an OpenFlow group features request for OpenFlow version
7666 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7668 struct ofpbuf *request = NULL;
7670 switch (ofp_version) {
7673 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7674 "(\'-O OpenFlow12\')");
7679 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7689 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7690 * group features request 'request'. */
7692 ofputil_encode_group_features_reply(
7693 const struct ofputil_group_features *features,
7694 const struct ofp_header *request)
7696 struct ofp12_group_features_stats *ogf;
7697 struct ofpbuf *reply;
7700 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7701 request->version, request->xid, 0);
7702 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7703 ogf->types = htonl(features->types);
7704 ogf->capabilities = htonl(features->capabilities);
7705 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7706 ogf->max_groups[i] = htonl(features->max_groups[i]);
7707 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7714 /* Decodes group features reply 'oh' into 'features'. */
7716 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7717 struct ofputil_group_features *features)
7719 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7722 features->types = ntohl(ogf->types);
7723 features->capabilities = ntohl(ogf->capabilities);
7724 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7725 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7726 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7727 ogf->actions[i], oh->version);
7731 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7732 * group ID and stores the latter in '*group_id'.
7733 * Returns 0 if successful, otherwise an OFPERR_* number. */
7735 ofputil_decode_group_stats_request(const struct ofp_header *request,
7738 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7739 *group_id = ntohl(gsr11->group_id);
7743 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7744 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7745 * caller to eventually free.
7747 * Multiple group stats replies can be packed into a single OpenFlow message.
7748 * Calling this function multiple times for a single 'msg' iterates through the
7749 * replies. The caller must initially leave 'msg''s layer pointers null and
7750 * not modify them between calls.
7752 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7753 * otherwise a positive errno value. */
7755 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7756 struct ofputil_group_stats *gs)
7758 struct ofp11_bucket_counter *obc;
7759 struct ofp11_group_stats *ogs11;
7766 gs->bucket_stats = NULL;
7767 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7768 : ofpraw_pull(&raw, msg));
7777 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7778 base_len = sizeof *ogs11;
7779 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7780 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7781 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7782 struct ofp13_group_stats *ogs13;
7784 base_len = sizeof *ogs13;
7785 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7788 gs->duration_sec = ntohl(ogs13->duration_sec);
7789 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7798 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7799 ofpraw_get_name(raw), msg->size);
7800 return OFPERR_OFPBRC_BAD_LEN;
7802 length = ntohs(ogs11->length);
7803 if (length < sizeof base_len) {
7804 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7805 ofpraw_get_name(raw), length);
7806 return OFPERR_OFPBRC_BAD_LEN;
7809 gs->group_id = ntohl(ogs11->group_id);
7810 gs->ref_count = ntohl(ogs11->ref_count);
7811 gs->packet_count = ntohll(ogs11->packet_count);
7812 gs->byte_count = ntohll(ogs11->byte_count);
7814 gs->n_buckets = (length - base_len) / sizeof *obc;
7815 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7817 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7818 ofpraw_get_name(raw), msg->size);
7819 return OFPERR_OFPBRC_BAD_LEN;
7822 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7823 for (i = 0; i < gs->n_buckets; i++) {
7824 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7825 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7832 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7833 struct ofpbuf *openflow, enum ofp_version ofp_version)
7835 struct ofp11_bucket *ob;
7838 start = openflow->size;
7839 ofpbuf_put_zeros(openflow, sizeof *ob);
7840 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7841 openflow, ofp_version);
7842 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7843 ob->len = htons(openflow->size - start);
7844 ob->weight = htons(bucket->weight);
7845 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7846 ob->watch_group = htonl(bucket->watch_group);
7850 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7851 uint32_t bucket_id, enum ofp11_group_type group_type,
7852 struct ofpbuf *openflow, enum ofp_version ofp_version)
7854 struct ofp15_bucket *ob;
7855 size_t start, actions_start, actions_len;
7857 start = openflow->size;
7858 ofpbuf_put_zeros(openflow, sizeof *ob);
7860 actions_start = openflow->size;
7861 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7862 openflow, ofp_version);
7863 actions_len = openflow->size - actions_start;
7865 if (group_type == OFPGT11_SELECT) {
7866 ofpprop_put_u16(openflow, OFPGBPT15_WEIGHT, bucket->weight);
7868 if (bucket->watch_port != OFPP_ANY) {
7869 ofpprop_put_be32(openflow, OFPGBPT15_WATCH_PORT,
7870 ofputil_port_to_ofp11(bucket->watch_port));
7872 if (bucket->watch_group != OFPG_ANY) {
7873 ofpprop_put_u32(openflow, OFPGBPT15_WATCH_GROUP, bucket->watch_group);
7876 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7877 ob->len = htons(openflow->size - start);
7878 ob->action_array_len = htons(actions_len);
7879 ob->bucket_id = htonl(bucket_id);
7883 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7884 const struct ofputil_group_props *gp,
7885 struct ofpbuf *openflow)
7887 struct ntr_group_prop_selection_method *prop;
7890 start = openflow->size;
7891 ofpbuf_put_zeros(openflow, sizeof *prop);
7892 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7893 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7894 prop->type = htons(OFPGPT15_EXPERIMENTER);
7895 prop->experimenter = htonl(NTR_VENDOR_ID);
7896 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7897 strcpy(prop->selection_method, gp->selection_method);
7898 prop->selection_method_param = htonll(gp->selection_method_param);
7899 ofpprop_end(openflow, start);
7903 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7904 const struct ovs_list *buckets,
7905 struct ovs_list *replies,
7906 enum ofp_version version)
7908 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7909 struct ofp11_group_desc_stats *ogds;
7910 struct ofputil_bucket *bucket;
7913 start_ogds = reply->size;
7914 ofpbuf_put_zeros(reply, sizeof *ogds);
7915 LIST_FOR_EACH (bucket, list_node, buckets) {
7916 ofputil_put_ofp11_bucket(bucket, reply, version);
7918 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7919 ogds->length = htons(reply->size - start_ogds);
7920 ogds->type = gds->type;
7921 ogds->group_id = htonl(gds->group_id);
7923 ofpmp_postappend(replies, start_ogds);
7927 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
7928 const struct ovs_list *buckets,
7929 struct ovs_list *replies,
7930 enum ofp_version version)
7932 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7933 struct ofp15_group_desc_stats *ogds;
7934 struct ofputil_bucket *bucket;
7935 size_t start_ogds, start_buckets;
7937 start_ogds = reply->size;
7938 ofpbuf_put_zeros(reply, sizeof *ogds);
7939 start_buckets = reply->size;
7940 LIST_FOR_EACH (bucket, list_node, buckets) {
7941 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
7942 gds->type, reply, version);
7944 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7945 ogds->type = gds->type;
7946 ogds->group_id = htonl(gds->group_id);
7947 ogds->bucket_list_len = htons(reply->size - start_buckets);
7949 /* Add group properties */
7950 if (gds->props.selection_method[0]) {
7951 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
7954 ogds->length = htons(reply->size - start_ogds);
7956 ofpmp_postappend(replies, start_ogds);
7959 /* Appends a group stats reply that contains the data in 'gds' to those already
7960 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7961 * initialized with ofpmp_init(). */
7963 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7964 const struct ovs_list *buckets,
7965 struct ovs_list *replies)
7967 enum ofp_version version = ofpmp_version(replies);
7975 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
7979 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
7989 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
7990 enum ofp_version version, struct ovs_list *buckets)
7992 struct ofp11_bucket *ob;
7993 uint32_t bucket_id = 0;
7996 while (buckets_length > 0) {
7997 struct ofputil_bucket *bucket;
7998 struct ofpbuf ofpacts;
8002 ob = (buckets_length >= sizeof *ob
8003 ? ofpbuf_try_pull(msg, sizeof *ob)
8006 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
8008 return OFPERR_OFPGMFC_BAD_BUCKET;
8011 ob_len = ntohs(ob->len);
8012 if (ob_len < sizeof *ob) {
8013 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8014 "%"PRIuSIZE" is not valid", ob_len);
8015 return OFPERR_OFPGMFC_BAD_BUCKET;
8016 } else if (ob_len > buckets_length) {
8017 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8018 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
8019 ob_len, buckets_length);
8020 return OFPERR_OFPGMFC_BAD_BUCKET;
8022 buckets_length -= ob_len;
8024 ofpbuf_init(&ofpacts, 0);
8025 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
8028 ofpbuf_uninit(&ofpacts);
8029 ofputil_bucket_list_destroy(buckets);
8033 bucket = xzalloc(sizeof *bucket);
8034 bucket->weight = ntohs(ob->weight);
8035 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
8037 ofpbuf_uninit(&ofpacts);
8038 ofputil_bucket_list_destroy(buckets);
8039 return OFPERR_OFPGMFC_BAD_WATCH;
8041 bucket->watch_group = ntohl(ob->watch_group);
8042 bucket->bucket_id = bucket_id++;
8044 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8045 bucket->ofpacts_len = ofpacts.size;
8046 list_push_back(buckets, &bucket->list_node);
8053 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
8054 enum ofp_version version, uint8_t group_type,
8055 struct ovs_list *buckets)
8057 struct ofp15_bucket *ob;
8060 while (buckets_length > 0) {
8061 struct ofputil_bucket *bucket = NULL;
8062 struct ofpbuf ofpacts;
8063 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
8064 struct ofpbuf properties;
8065 size_t ob_len, actions_len, properties_len;
8066 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
8067 ovs_be32 watch_group = htonl(OFPG_ANY);
8068 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
8070 ofpbuf_init(&ofpacts, 0);
8072 ob = ofpbuf_try_pull(msg, sizeof *ob);
8074 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
8075 " leftover bytes", buckets_length);
8079 ob_len = ntohs(ob->len);
8080 actions_len = ntohs(ob->action_array_len);
8082 if (ob_len < sizeof *ob) {
8083 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8084 "%"PRIuSIZE" is not valid", ob_len);
8086 } else if (ob_len > buckets_length) {
8087 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8088 "%"PRIuSIZE" exceeds remaining buckets data size %"
8089 PRIuSIZE, ob_len, buckets_length);
8091 } else if (actions_len > ob_len - sizeof *ob) {
8092 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
8093 "length %"PRIuSIZE" exceeds remaining bucket "
8094 "data size %"PRIuSIZE, actions_len,
8095 ob_len - sizeof *ob);
8098 buckets_length -= ob_len;
8100 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
8106 properties_len = ob_len - sizeof *ob - actions_len;
8107 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8110 while (properties.size > 0) {
8111 struct ofpbuf payload;
8114 err = ofpprop_pull(&properties, &payload, &type);
8120 case OFPGBPT15_WEIGHT:
8121 err = ofpprop_parse_be16(&payload, &weight);
8124 case OFPGBPT15_WATCH_PORT:
8125 err = ofpprop_parse_be32(&payload, &watch_port);
8128 case OFPGBPT15_WATCH_GROUP:
8129 err = ofpprop_parse_be32(&payload, &watch_group);
8133 err = OFPPROP_UNKNOWN(false, "group bucket", type);
8142 bucket = xzalloc(sizeof *bucket);
8144 bucket->weight = ntohs(weight);
8145 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8147 err = OFPERR_OFPGMFC_BAD_WATCH;
8150 bucket->watch_group = ntohl(watch_group);
8151 bucket->bucket_id = ntohl(ob->bucket_id);
8152 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8153 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8155 err = OFPERR_OFPGMFC_BAD_BUCKET;
8159 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8160 bucket->ofpacts_len = ofpacts.size;
8161 list_push_back(buckets, &bucket->list_node);
8167 ofpbuf_uninit(&ofpacts);
8168 ofputil_bucket_list_destroy(buckets);
8172 if (ofputil_bucket_check_duplicate_id(buckets)) {
8173 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8174 ofputil_bucket_list_destroy(buckets);
8175 return OFPERR_OFPGMFC_BAD_BUCKET;
8182 ofputil_init_group_properties(struct ofputil_group_props *gp)
8184 memset(gp, 0, sizeof *gp);
8188 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8189 enum ofp11_group_type group_type,
8190 enum ofp15_group_mod_command group_cmd,
8191 struct ofputil_group_props *gp)
8193 struct ntr_group_prop_selection_method *prop = payload->data;
8194 size_t fields_len, method_len;
8197 switch (group_type) {
8198 case OFPGT11_SELECT:
8201 case OFPGT11_INDIRECT:
8203 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
8204 "only allowed for select groups");
8205 return OFPERR_OFPBPC_BAD_VALUE;
8210 switch (group_cmd) {
8212 case OFPGC15_MODIFY:
8214 case OFPGC15_DELETE:
8215 case OFPGC15_INSERT_BUCKET:
8216 case OFPGC15_REMOVE_BUCKET:
8217 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
8218 "only allowed for add and delete group modifications");
8219 return OFPERR_OFPBPC_BAD_VALUE;
8224 if (payload->size < sizeof *prop) {
8225 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property "
8226 "length %u is not valid", payload->size);
8227 return OFPERR_OFPBPC_BAD_LEN;
8230 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8232 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8233 OFPPROP_LOG(&bad_ofmsg_rl, false,
8234 "ntr selection method is not null terminated");
8235 return OFPERR_OFPBPC_BAD_VALUE;
8238 if (strcmp("hash", prop->selection_method)) {
8239 OFPPROP_LOG(&bad_ofmsg_rl, false,
8240 "ntr selection method '%s' is not supported",
8241 prop->selection_method);
8242 return OFPERR_OFPBPC_BAD_VALUE;
8245 strcpy(gp->selection_method, prop->selection_method);
8246 gp->selection_method_param = ntohll(prop->selection_method_param);
8248 if (!method_len && gp->selection_method_param) {
8249 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
8250 "non-zero but selection method is empty");
8251 return OFPERR_OFPBPC_BAD_VALUE;
8254 ofpbuf_pull(payload, sizeof *prop);
8256 fields_len = ntohs(prop->length) - sizeof *prop;
8257 if (!method_len && fields_len) {
8258 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
8259 "zero but fields are provided");
8260 return OFPERR_OFPBPC_BAD_VALUE;
8263 error = oxm_pull_field_array(payload->data, fields_len,
8266 OFPPROP_LOG(&bad_ofmsg_rl, false,
8267 "ntr selection method fields are invalid");
8275 parse_ofp15_group_properties(struct ofpbuf *msg,
8276 enum ofp11_group_type group_type,
8277 enum ofp15_group_mod_command group_cmd,
8278 struct ofputil_group_props *gp,
8279 size_t properties_len)
8281 struct ofpbuf properties;
8283 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8286 while (properties.size > 0) {
8287 struct ofpbuf payload;
8291 error = ofpprop_pull(&properties, &payload, &type);
8297 case OFPPROP_EXP(NTR_VENDOR_ID, NTRT_SELECTION_METHOD):
8298 case OFPPROP_EXP(NTR_COMPAT_VENDOR_ID, NTRT_SELECTION_METHOD):
8299 error = parse_group_prop_ntr_selection_method(&payload, group_type,
8304 error = OFPPROP_UNKNOWN(false, "group", type);
8317 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8319 enum ofp_version version)
8321 struct ofp11_group_desc_stats *ogds;
8325 ofpraw_pull_assert(msg);
8332 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8334 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8335 "leftover bytes at end", msg->size);
8336 return OFPERR_OFPBRC_BAD_LEN;
8338 gd->type = ogds->type;
8339 gd->group_id = ntohl(ogds->group_id);
8341 length = ntohs(ogds->length);
8342 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8343 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8344 "length %"PRIuSIZE, length);
8345 return OFPERR_OFPBRC_BAD_LEN;
8348 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8353 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8355 enum ofp_version version)
8357 struct ofp15_group_desc_stats *ogds;
8358 uint16_t length, bucket_list_len;
8362 ofpraw_pull_assert(msg);
8369 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8371 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8372 "leftover bytes at end", msg->size);
8373 return OFPERR_OFPBRC_BAD_LEN;
8375 gd->type = ogds->type;
8376 gd->group_id = ntohl(ogds->group_id);
8378 length = ntohs(ogds->length);
8379 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8380 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8381 "length %u", length);
8382 return OFPERR_OFPBRC_BAD_LEN;
8385 bucket_list_len = ntohs(ogds->bucket_list_len);
8386 if (length < bucket_list_len + sizeof *ogds) {
8387 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8388 "bucket list length %u", bucket_list_len);
8389 return OFPERR_OFPBRC_BAD_LEN;
8391 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8397 /* By definition group desc messages don't have a group mod command.
8398 * However, parse_group_prop_ntr_selection_method() checks to make sure
8399 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8400 * against group mod messages with other commands supplying
8401 * a NTR selection method group experimenter property.
8402 * Such properties are valid for group desc replies so
8403 * claim that the group mod command is OFPGC15_ADD to
8404 * satisfy the check in parse_group_prop_ntr_selection_method() */
8405 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8406 length - sizeof *ogds - bucket_list_len);
8409 /* Converts a group description reply in 'msg' into an abstract
8410 * ofputil_group_desc in 'gd'.
8412 * Multiple group description replies can be packed into a single OpenFlow
8413 * message. Calling this function multiple times for a single 'msg' iterates
8414 * through the replies. The caller must initially leave 'msg''s layer pointers
8415 * null and not modify them between calls.
8417 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8418 * otherwise a positive errno value. */
8420 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8421 struct ofpbuf *msg, enum ofp_version version)
8423 ofputil_init_group_properties(&gd->props);
8431 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8434 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8443 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8445 ofputil_bucket_list_destroy(&gm->buckets);
8448 static struct ofpbuf *
8449 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8450 const struct ofputil_group_mod *gm)
8453 struct ofp11_group_mod *ogm;
8455 struct ofputil_bucket *bucket;
8457 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8458 start_ogm = b->size;
8459 ofpbuf_put_zeros(b, sizeof *ogm);
8461 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8462 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8464 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8465 ogm->command = htons(gm->command);
8466 ogm->type = gm->type;
8467 ogm->group_id = htonl(gm->group_id);
8472 static struct ofpbuf *
8473 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8474 const struct ofputil_group_mod *gm)
8477 struct ofp15_group_mod *ogm;
8479 struct ofputil_bucket *bucket;
8480 struct id_pool *bucket_ids = NULL;
8482 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8483 start_ogm = b->size;
8484 ofpbuf_put_zeros(b, sizeof *ogm);
8486 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8489 /* Generate a bucket id if none was supplied */
8490 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8492 const struct ofputil_bucket *bkt;
8494 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8496 /* Mark all bucket_ids that are present in gm
8497 * as used in the pool. */
8498 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8499 if (bkt == bucket) {
8502 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8503 id_pool_add(bucket_ids, bkt->bucket_id);
8508 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8512 bucket_id = bucket->bucket_id;
8515 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8517 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8518 ogm->command = htons(gm->command);
8519 ogm->type = gm->type;
8520 ogm->group_id = htonl(gm->group_id);
8521 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8522 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8524 /* Add group properties */
8525 if (gm->props.selection_method[0]) {
8526 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8529 id_pool_destroy(bucket_ids);
8534 bad_group_cmd(enum ofp15_group_mod_command cmd)
8536 const char *opt_version;
8537 const char *version;
8538 const char *cmd_str;
8542 case OFPGC15_MODIFY:
8543 case OFPGC15_DELETE:
8548 case OFPGC15_INSERT_BUCKET:
8549 case OFPGC15_REMOVE_BUCKET:
8560 cmd_str = "add-group";
8563 case OFPGC15_MODIFY:
8564 cmd_str = "mod-group";
8567 case OFPGC15_DELETE:
8568 cmd_str = "del-group";
8571 case OFPGC15_INSERT_BUCKET:
8572 cmd_str = "insert-bucket";
8575 case OFPGC15_REMOVE_BUCKET:
8576 cmd_str = "remove-bucket";
8583 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8584 cmd_str, version, opt_version);
8588 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8589 * 'ofp_version' and returns the message. */
8591 ofputil_encode_group_mod(enum ofp_version ofp_version,
8592 const struct ofputil_group_mod *gm)
8595 switch (ofp_version) {
8597 bad_group_cmd(gm->command);
8603 if (gm->command > OFPGC11_DELETE) {
8604 bad_group_cmd(gm->command);
8606 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8609 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8617 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8618 struct ofputil_group_mod *gm)
8620 const struct ofp11_group_mod *ogm;
8623 ogm = ofpbuf_pull(msg, sizeof *ogm);
8624 gm->command = ntohs(ogm->command);
8625 gm->type = ogm->type;
8626 gm->group_id = ntohl(ogm->group_id);
8627 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8629 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8632 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8634 && ofp_version >= OFP13_VERSION
8635 && gm->command == OFPGC11_DELETE
8636 && !list_is_empty(&gm->buckets)) {
8637 error = OFPERR_OFPGMFC_INVALID_GROUP;
8644 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8645 struct ofputil_group_mod *gm)
8647 const struct ofp15_group_mod *ogm;
8648 uint16_t bucket_list_len;
8649 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8651 ogm = ofpbuf_pull(msg, sizeof *ogm);
8652 gm->command = ntohs(ogm->command);
8653 gm->type = ogm->type;
8654 gm->group_id = ntohl(ogm->group_id);
8656 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8657 switch (gm->command) {
8658 case OFPGC15_REMOVE_BUCKET:
8659 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8663 case OFPGC15_INSERT_BUCKET:
8664 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8665 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8666 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8672 case OFPGC11_MODIFY:
8673 case OFPGC11_DELETE:
8675 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8681 VLOG_WARN_RL(&bad_ofmsg_rl,
8682 "group command bucket id (%u) is out of range",
8683 gm->command_bucket_id);
8684 return OFPERR_OFPGMFC_BAD_BUCKET;
8687 bucket_list_len = ntohs(ogm->bucket_array_len);
8688 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8689 gm->type, &gm->buckets);
8694 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8698 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8699 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8701 ofputil_decode_group_mod(const struct ofp_header *oh,
8702 struct ofputil_group_mod *gm)
8704 enum ofp_version ofp_version = oh->version;
8706 struct ofputil_bucket *bucket;
8709 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
8710 ofpraw_pull_assert(&msg);
8712 ofputil_init_group_properties(&gm->props);
8714 switch (ofp_version)
8720 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8724 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8737 case OFPGT11_INDIRECT:
8738 if (!list_is_singleton(&gm->buckets)) {
8739 return OFPERR_OFPGMFC_INVALID_GROUP;
8743 case OFPGT11_SELECT:
8747 return OFPERR_OFPGMFC_BAD_TYPE;
8750 switch (gm->command) {
8752 case OFPGC11_MODIFY:
8753 case OFPGC11_DELETE:
8754 case OFPGC15_INSERT_BUCKET:
8756 case OFPGC15_REMOVE_BUCKET:
8757 if (!list_is_empty(&gm->buckets)) {
8758 return OFPERR_OFPGMFC_BAD_BUCKET;
8762 return OFPERR_OFPGMFC_BAD_COMMAND;
8765 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8766 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8767 return OFPERR_OFPGMFC_INVALID_GROUP;
8772 case OFPGT11_INDIRECT:
8773 if (ofputil_bucket_has_liveness(bucket)) {
8774 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8777 case OFPGT11_SELECT:
8780 if (!ofputil_bucket_has_liveness(bucket)) {
8781 return OFPERR_OFPGMFC_INVALID_GROUP;
8785 /* Returning BAD TYPE to be consistent
8786 * though gm->type has been checked already. */
8787 return OFPERR_OFPGMFC_BAD_TYPE;
8794 /* Parse a queue status request message into 'oqsr'.
8795 * Returns 0 if successful, otherwise an OFPERR_* number. */
8797 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8798 struct ofputil_queue_stats_request *oqsr)
8800 switch ((enum ofp_version)request->version) {
8805 case OFP11_VERSION: {
8806 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8807 oqsr->queue_id = ntohl(qsr11->queue_id);
8808 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8811 case OFP10_VERSION: {
8812 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8813 oqsr->queue_id = ntohl(qsr10->queue_id);
8814 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8815 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
8816 if (oqsr->port_no == OFPP_ALL) {
8817 oqsr->port_no = OFPP_ANY;
8827 /* Encode a queue stats request for 'oqsr', the encoded message
8828 * will be for OpenFlow version 'ofp_version'. Returns message
8829 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
8831 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
8832 const struct ofputil_queue_stats_request *oqsr)
8834 struct ofpbuf *request;
8836 switch (ofp_version) {
8841 case OFP15_VERSION: {
8842 struct ofp11_queue_stats_request *req;
8843 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
8844 req = ofpbuf_put_zeros(request, sizeof *req);
8845 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
8846 req->queue_id = htonl(oqsr->queue_id);
8849 case OFP10_VERSION: {
8850 struct ofp10_queue_stats_request *req;
8851 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
8852 req = ofpbuf_put_zeros(request, sizeof *req);
8853 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
8854 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
8855 ? OFPP_ALL : oqsr->port_no));
8856 req->queue_id = htonl(oqsr->queue_id);
8866 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
8869 ofputil_count_queue_stats(const struct ofp_header *oh)
8871 struct ofputil_queue_stats qs;
8875 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8876 ofpraw_pull_assert(&b);
8877 while (!ofputil_decode_queue_stats(&qs, &b)) {
8884 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
8885 const struct ofp10_queue_stats *qs10)
8887 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
8888 oqs->queue_id = ntohl(qs10->queue_id);
8889 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
8890 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
8891 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
8892 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8898 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
8899 const struct ofp11_queue_stats *qs11)
8903 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
8908 oqs->queue_id = ntohl(qs11->queue_id);
8909 oqs->tx_bytes = ntohll(qs11->tx_bytes);
8910 oqs->tx_packets = ntohll(qs11->tx_packets);
8911 oqs->tx_errors = ntohll(qs11->tx_errors);
8912 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8918 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
8919 const struct ofp13_queue_stats *qs13)
8921 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
8923 oqs->duration_sec = ntohl(qs13->duration_sec);
8924 oqs->duration_nsec = ntohl(qs13->duration_nsec);
8931 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
8934 const struct ofp14_queue_stats *qs14;
8937 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
8939 return OFPERR_OFPBRC_BAD_LEN;
8942 len = ntohs(qs14->length);
8943 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
8944 return OFPERR_OFPBRC_BAD_LEN;
8946 ofpbuf_pull(msg, len - sizeof *qs14);
8948 /* No properties yet defined, so ignore them for now. */
8950 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
8953 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
8954 * ofputil_queue_stats in 'qs'.
8956 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
8957 * message. Calling this function multiple times for a single 'msg' iterates
8958 * through the replies. The caller must initially leave 'msg''s layer pointers
8959 * null and not modify them between calls.
8961 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8962 * otherwise a positive errno value. */
8964 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
8969 error = (msg->header ? ofpraw_decode(&raw, msg->header)
8970 : ofpraw_pull(&raw, msg));
8977 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
8978 return ofputil_pull_ofp14_queue_stats(qs, msg);
8979 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
8980 const struct ofp13_queue_stats *qs13;
8982 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
8986 return ofputil_queue_stats_from_ofp13(qs, qs13);
8987 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
8988 const struct ofp11_queue_stats *qs11;
8990 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
8994 return ofputil_queue_stats_from_ofp11(qs, qs11);
8995 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
8996 const struct ofp10_queue_stats *qs10;
8998 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
9002 return ofputil_queue_stats_from_ofp10(qs, qs10);
9008 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
9009 "bytes at end", msg->size);
9010 return OFPERR_OFPBRC_BAD_LEN;
9014 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
9015 struct ofp10_queue_stats *qs10)
9017 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
9018 memset(qs10->pad, 0, sizeof qs10->pad);
9019 qs10->queue_id = htonl(oqs->queue_id);
9020 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
9021 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
9022 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
9026 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
9027 struct ofp11_queue_stats *qs11)
9029 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
9030 qs11->queue_id = htonl(oqs->queue_id);
9031 qs11->tx_bytes = htonll(oqs->tx_bytes);
9032 qs11->tx_packets = htonll(oqs->tx_packets);
9033 qs11->tx_errors = htonll(oqs->tx_errors);
9037 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
9038 struct ofp13_queue_stats *qs13)
9040 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
9041 if (oqs->duration_sec != UINT32_MAX) {
9042 qs13->duration_sec = htonl(oqs->duration_sec);
9043 qs13->duration_nsec = htonl(oqs->duration_nsec);
9045 qs13->duration_sec = OVS_BE32_MAX;
9046 qs13->duration_nsec = OVS_BE32_MAX;
9051 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
9052 struct ofp14_queue_stats *qs14)
9054 qs14->length = htons(sizeof *qs14);
9055 memset(qs14->pad, 0, sizeof qs14->pad);
9056 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
9060 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
9062 ofputil_append_queue_stat(struct ovs_list *replies,
9063 const struct ofputil_queue_stats *oqs)
9065 switch (ofpmp_version(replies)) {
9066 case OFP13_VERSION: {
9067 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9068 ofputil_queue_stats_to_ofp13(oqs, reply);
9073 case OFP11_VERSION: {
9074 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9075 ofputil_queue_stats_to_ofp11(oqs, reply);
9079 case OFP10_VERSION: {
9080 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9081 ofputil_queue_stats_to_ofp10(oqs, reply);
9086 case OFP15_VERSION: {
9087 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
9088 ofputil_queue_stats_to_ofp14(oqs, reply);
9098 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
9099 struct ofputil_bundle_ctrl_msg *msg)
9103 const struct ofp14_bundle_ctrl_msg *m;
9105 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9106 raw = ofpraw_pull_assert(&b);
9107 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
9110 msg->bundle_id = ntohl(m->bundle_id);
9111 msg->type = ntohs(m->type);
9112 msg->flags = ntohs(m->flags);
9118 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9119 struct ofputil_bundle_ctrl_msg *bc)
9121 struct ofpbuf *request;
9122 struct ofp14_bundle_ctrl_msg *m;
9124 switch (ofp_version) {
9129 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9130 "(\'-O OpenFlow14\')");
9133 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9134 m = ofpbuf_put_zeros(request, sizeof *m);
9136 m->bundle_id = htonl(bc->bundle_id);
9137 m->type = htons(bc->type);
9138 m->flags = htons(bc->flags);
9148 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9149 struct ofputil_bundle_ctrl_msg *msg)
9152 struct ofp14_bundle_ctrl_msg *m;
9154 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9155 m = ofpbuf_put_zeros(buf, sizeof *m);
9157 m->bundle_id = htonl(msg->bundle_id);
9158 m->type = htons(msg->type);
9159 m->flags = htons(msg->flags);
9164 /* Return true for bundlable state change requests, false for other messages.
9167 ofputil_is_bundlable(enum ofptype type)
9170 /* Minimum required by OpenFlow 1.4. */
9171 case OFPTYPE_PORT_MOD:
9172 case OFPTYPE_FLOW_MOD:
9175 /* Nice to have later. */
9176 case OFPTYPE_FLOW_MOD_TABLE_ID:
9177 case OFPTYPE_GROUP_MOD:
9178 case OFPTYPE_TABLE_MOD:
9179 case OFPTYPE_METER_MOD:
9180 case OFPTYPE_PACKET_OUT:
9181 case OFPTYPE_NXT_TLV_TABLE_MOD:
9183 /* Not to be bundlable. */
9184 case OFPTYPE_ECHO_REQUEST:
9185 case OFPTYPE_FEATURES_REQUEST:
9186 case OFPTYPE_GET_CONFIG_REQUEST:
9187 case OFPTYPE_SET_CONFIG:
9188 case OFPTYPE_BARRIER_REQUEST:
9189 case OFPTYPE_ROLE_REQUEST:
9190 case OFPTYPE_ECHO_REPLY:
9191 case OFPTYPE_SET_FLOW_FORMAT:
9192 case OFPTYPE_SET_PACKET_IN_FORMAT:
9193 case OFPTYPE_SET_CONTROLLER_ID:
9194 case OFPTYPE_FLOW_AGE:
9195 case OFPTYPE_FLOW_MONITOR_CANCEL:
9196 case OFPTYPE_SET_ASYNC_CONFIG:
9197 case OFPTYPE_GET_ASYNC_REQUEST:
9198 case OFPTYPE_DESC_STATS_REQUEST:
9199 case OFPTYPE_FLOW_STATS_REQUEST:
9200 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9201 case OFPTYPE_TABLE_STATS_REQUEST:
9202 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9203 case OFPTYPE_TABLE_DESC_REQUEST:
9204 case OFPTYPE_PORT_STATS_REQUEST:
9205 case OFPTYPE_QUEUE_STATS_REQUEST:
9206 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9207 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9208 case OFPTYPE_METER_STATS_REQUEST:
9209 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9210 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9211 case OFPTYPE_GROUP_STATS_REQUEST:
9212 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9213 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9214 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9215 case OFPTYPE_BUNDLE_CONTROL:
9216 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9219 case OFPTYPE_FEATURES_REPLY:
9220 case OFPTYPE_GET_CONFIG_REPLY:
9221 case OFPTYPE_PACKET_IN:
9222 case OFPTYPE_FLOW_REMOVED:
9223 case OFPTYPE_PORT_STATUS:
9224 case OFPTYPE_BARRIER_REPLY:
9225 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9226 case OFPTYPE_DESC_STATS_REPLY:
9227 case OFPTYPE_FLOW_STATS_REPLY:
9228 case OFPTYPE_QUEUE_STATS_REPLY:
9229 case OFPTYPE_PORT_STATS_REPLY:
9230 case OFPTYPE_TABLE_STATS_REPLY:
9231 case OFPTYPE_AGGREGATE_STATS_REPLY:
9232 case OFPTYPE_PORT_DESC_STATS_REPLY:
9233 case OFPTYPE_ROLE_REPLY:
9234 case OFPTYPE_FLOW_MONITOR_PAUSED:
9235 case OFPTYPE_FLOW_MONITOR_RESUMED:
9236 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9237 case OFPTYPE_GET_ASYNC_REPLY:
9238 case OFPTYPE_GROUP_STATS_REPLY:
9239 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9240 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9241 case OFPTYPE_METER_STATS_REPLY:
9242 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9243 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9244 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9245 case OFPTYPE_TABLE_DESC_REPLY:
9246 case OFPTYPE_ROLE_STATUS:
9247 case OFPTYPE_REQUESTFORWARD:
9248 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9249 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9257 ofputil_decode_bundle_add(const struct ofp_header *oh,
9258 struct ofputil_bundle_add_msg *msg,
9259 enum ofptype *type_ptr)
9261 const struct ofp14_bundle_ctrl_msg *m;
9268 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9269 raw = ofpraw_pull_assert(&b);
9270 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9272 m = ofpbuf_pull(&b, sizeof *m);
9273 msg->bundle_id = ntohl(m->bundle_id);
9274 msg->flags = ntohs(m->flags);
9277 if (msg->msg->version != oh->version) {
9278 return OFPERR_NXBFC_BAD_VERSION;
9280 inner_len = ntohs(msg->msg->length);
9281 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9282 return OFPERR_OFPBFC_MSG_BAD_LEN;
9284 if (msg->msg->xid != oh->xid) {
9285 return OFPERR_OFPBFC_MSG_BAD_XID;
9288 /* Reject unbundlable messages. */
9292 error = ofptype_decode(type_ptr, msg->msg);
9294 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9295 "message is unparsable (%s)", ofperr_get_name(error));
9296 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9299 if (!ofputil_is_bundlable(*type_ptr)) {
9300 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9301 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(*type_ptr));
9302 return OFPERR_OFPBFC_MSG_UNSUP;
9309 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9310 struct ofputil_bundle_add_msg *msg)
9312 struct ofpbuf *request;
9313 struct ofp14_bundle_ctrl_msg *m;
9315 /* Must use the same xid as the embedded message. */
9316 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9318 m = ofpbuf_put_zeros(request, sizeof *m);
9320 m->bundle_id = htonl(msg->bundle_id);
9321 m->flags = htons(msg->flags);
9322 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9328 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9330 struct ofputil_tlv_map *map;
9332 LIST_FOR_EACH (map, list_node, mappings) {
9333 struct nx_tlv_map *nx_map;
9335 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9336 nx_map->option_class = htons(map->option_class);
9337 nx_map->option_type = map->option_type;
9338 nx_map->option_len = map->option_len;
9339 nx_map->index = htons(map->index);
9344 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9345 struct ofputil_tlv_table_mod *ttm)
9348 struct nx_tlv_table_mod *nx_ttm;
9350 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9351 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9352 nx_ttm->command = htons(ttm->command);
9353 encode_tlv_table_mappings(b, &ttm->mappings);
9359 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9360 struct ovs_list *mappings)
9362 list_init(mappings);
9365 struct nx_tlv_map *nx_map;
9366 struct ofputil_tlv_map *map;
9368 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9369 map = xmalloc(sizeof *map);
9370 list_push_back(mappings, &map->list_node);
9372 map->option_class = ntohs(nx_map->option_class);
9373 map->option_type = nx_map->option_type;
9375 map->option_len = nx_map->option_len;
9376 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9377 VLOG_WARN_RL(&bad_ofmsg_rl,
9378 "tlv table option length (%u) is not a valid option size",
9380 ofputil_uninit_tlv_table(mappings);
9381 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9384 map->index = ntohs(nx_map->index);
9385 if (map->index >= max_fields) {
9386 VLOG_WARN_RL(&bad_ofmsg_rl,
9387 "tlv table field index (%u) is too large (max %u)",
9388 map->index, max_fields - 1);
9389 ofputil_uninit_tlv_table(mappings);
9390 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9398 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9399 struct ofputil_tlv_table_mod *ttm)
9402 struct nx_tlv_table_mod *nx_ttm;
9404 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9405 ofpraw_pull_assert(&msg);
9407 nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9408 ttm->command = ntohs(nx_ttm->command);
9409 if (ttm->command > NXTTMC_CLEAR) {
9410 VLOG_WARN_RL(&bad_ofmsg_rl,
9411 "tlv table mod command (%u) is out of range",
9413 return OFPERR_NXTTMFC_BAD_COMMAND;
9416 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9421 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9422 struct ofputil_tlv_table_reply *ttr)
9425 struct nx_tlv_table_reply *nx_ttr;
9427 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9428 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9429 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9430 nx_ttr->max_fields = htons(ttr->max_fields);
9432 encode_tlv_table_mappings(b, &ttr->mappings);
9437 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9438 * if successful, otherwise an ofperr.
9440 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9441 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9442 * less than TUN_METADATA_NUM_OPTS. */
9444 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9445 struct ofputil_tlv_table_reply *ttr)
9448 struct nx_tlv_table_reply *nx_ttr;
9450 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9451 ofpraw_pull_assert(&msg);
9453 nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9454 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9455 ttr->max_fields = ntohs(nx_ttr->max_fields);
9457 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9461 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9463 struct ofputil_tlv_map *map;
9465 LIST_FOR_EACH_POP (map, list_node, mappings) {
9471 ofputil_async_msg_type_to_string(enum ofputil_async_msg_type type)
9474 case OAM_PACKET_IN: return "PACKET_IN";
9475 case OAM_PORT_STATUS: return "PORT_STATUS";
9476 case OAM_FLOW_REMOVED: return "FLOW_REMOVED";
9477 case OAM_ROLE_STATUS: return "ROLE_STATUS";
9478 case OAM_TABLE_STATUS: return "TABLE_STATUS";
9479 case OAM_REQUESTFORWARD: return "REQUESTFORWARD";
9487 /* Decodes the OpenFlow "set async config" request and "get async config
9488 * reply" message in '*oh' into an abstract form in 'ac'.
9490 * If 'loose' is true, this function ignores properties and values that it does
9491 * not understand, as a controller would want to do when interpreting
9492 * capabilities provided by a switch. If 'loose' is false, this function
9493 * treats unknown properties and values as an error, as a switch would want to
9494 * do when interpreting a configuration request made by a controller.
9496 * Returns 0 if successful, otherwise an OFPERR_* value.
9498 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9499 * the valid range of mask.
9501 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9504 ofputil_decode_set_async_config(const struct ofp_header *oh, bool loose,
9505 struct ofputil_async_cfg *ac)
9510 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9511 raw = ofpraw_pull_assert(&b);
9513 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9514 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9515 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9516 const struct nx_async_config *msg = ofpmsg_body(oh);
9518 ac->master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
9519 ac->master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
9520 ac->master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
9522 ac->slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
9523 ac->slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
9524 ac->slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
9525 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9526 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY) {
9528 while (b.size > 0) {
9529 struct ofpbuf property;
9534 error = ofpprop_pull__(&b, &property, 8, 0xfffe, &type);
9539 error = ofpprop_parse_u32(&property, &mask);
9545 error = ofputil_check_mask(type, mask);
9552 case OFPACPT_PACKET_IN_SLAVE:
9553 ac->slave[OAM_PACKET_IN] = mask;
9556 case OFPACPT_PACKET_IN_MASTER:
9557 ac->master[OAM_PACKET_IN] = mask;
9560 case OFPACPT_PORT_STATUS_SLAVE:
9561 ac->slave[OAM_PORT_STATUS] = mask;
9564 case OFPACPT_PORT_STATUS_MASTER:
9565 ac->master[OAM_PORT_STATUS] = mask;
9568 case OFPACPT_FLOW_REMOVED_SLAVE:
9569 ac->slave[OAM_FLOW_REMOVED] = mask;
9572 case OFPACPT_FLOW_REMOVED_MASTER:
9573 ac->master[OAM_FLOW_REMOVED] = mask;
9576 case OFPACPT_ROLE_STATUS_SLAVE:
9577 ac->slave[OAM_ROLE_STATUS] = mask;
9580 case OFPACPT_ROLE_STATUS_MASTER:
9581 ac->master[OAM_ROLE_STATUS] = mask;
9584 case OFPACPT_TABLE_STATUS_SLAVE:
9585 ac->slave[OAM_TABLE_STATUS] = mask;
9588 case OFPACPT_TABLE_STATUS_MASTER:
9589 ac->master[OAM_TABLE_STATUS] = mask;
9592 case OFPACPT_REQUESTFORWARD_SLAVE:
9593 ac->slave[OAM_REQUESTFORWARD] = mask;
9596 case OFPACPT_REQUESTFORWARD_MASTER:
9597 ac->master[OAM_REQUESTFORWARD] = mask;
9601 error = loose ? 0 : OFPERR_OFPACFC_UNSUPPORTED;
9606 return OFPERR_OFPBRC_BAD_VERSION;
9611 /* Append all asynchronous configuration properties in GET_ASYNC_REPLY
9612 * message, describing if various set of asynchronous messages are enabled
9615 ofputil_get_async_reply(struct ofpbuf *buf, const uint32_t master_mask,
9616 const uint32_t slave_mask, const uint32_t type)
9620 for (role = 0; role < 2; role++) {
9621 enum ofp14_async_config_prop_type prop_type;
9625 prop_type = (role ? OFPACPT_PACKET_IN_SLAVE
9626 : OFPACPT_PACKET_IN_MASTER);
9629 case OAM_PORT_STATUS:
9630 prop_type = (role ? OFPACPT_PORT_STATUS_SLAVE
9631 : OFPACPT_PORT_STATUS_MASTER);
9634 case OAM_FLOW_REMOVED:
9635 prop_type = (role ? OFPACPT_FLOW_REMOVED_SLAVE
9636 : OFPACPT_FLOW_REMOVED_MASTER);
9639 case OAM_ROLE_STATUS:
9640 prop_type = (role ? OFPACPT_ROLE_STATUS_SLAVE
9641 : OFPACPT_ROLE_STATUS_MASTER);
9644 case OAM_TABLE_STATUS:
9645 prop_type = (role ? OFPACPT_TABLE_STATUS_SLAVE
9646 : OFPACPT_TABLE_STATUS_MASTER);
9649 case OAM_REQUESTFORWARD:
9650 prop_type = (role ? OFPACPT_REQUESTFORWARD_SLAVE
9651 : OFPACPT_REQUESTFORWARD_MASTER);
9655 return OFPERR_OFPBRC_BAD_TYPE;
9657 ofpprop_put_u32(buf, prop_type, role ? slave_mask : master_mask);
9663 /* Returns a OpenFlow message that encodes 'asynchronous configuration' properly
9664 * as a reply to get async config request. */
9666 ofputil_encode_get_async_config(const struct ofp_header *oh,
9667 const struct ofputil_async_cfg *ac)
9672 buf = ofpraw_alloc_reply((oh->version < OFP14_VERSION
9673 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9674 : OFPRAW_OFPT14_GET_ASYNC_REPLY), oh, 0);
9676 if (oh->version < OFP14_VERSION) {
9677 struct nx_async_config *msg;
9678 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9680 msg->packet_in_mask[0] = htonl(ac->master[OAM_PACKET_IN]);
9681 msg->port_status_mask[0] = htonl(ac->master[OAM_PORT_STATUS]);
9682 msg->flow_removed_mask[0] = htonl(ac->master[OAM_FLOW_REMOVED]);
9684 msg->packet_in_mask[1] = htonl(ac->slave[OAM_PACKET_IN]);
9685 msg->port_status_mask[1] = htonl(ac->slave[OAM_PORT_STATUS]);
9686 msg->flow_removed_mask[1] = htonl(ac->slave[OAM_FLOW_REMOVED]);
9687 } else if (oh->version == OFP14_VERSION) {
9688 for (type = 0; type < OAM_N_TYPES; type++) {
9689 ofputil_get_async_reply(buf, ac->master[type], ac->slave[type],
9697 struct ofputil_async_cfg
9698 ofputil_async_cfg_default(enum ofp_version version)
9700 return (struct ofputil_async_cfg) {
9701 .master[OAM_PACKET_IN]
9702 = ((version >= OFP14_VERSION ? OFPR14_BITS : OFPR10_BITS)
9703 & ~(1u << OFPR_INVALID_TTL)),
9705 .master[OAM_FLOW_REMOVED]
9706 = (version >= OFP14_VERSION ? OFPRR14_BITS : OFPRR10_BITS),
9708 .master[OAM_PORT_STATUS] = OFPPR_BITS,
9709 .slave[OAM_PORT_STATUS] = OFPPR_BITS,