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', suitable for OpenFlow version 'version'. */
2348 ofputil_encode_queue_get_config_request(enum ofp_version version,
2351 struct ofpbuf *request;
2353 if (version == OFP10_VERSION) {
2354 struct ofp10_queue_get_config_request *qgcr10;
2356 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2358 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2359 qgcr10->port = htons(ofp_to_u16(port));
2361 struct ofp11_queue_get_config_request *qgcr11;
2363 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2365 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2366 qgcr11->port = ofputil_port_to_ofp11(port);
2372 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2373 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2376 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2379 const struct ofp10_queue_get_config_request *qgcr10;
2380 const struct ofp11_queue_get_config_request *qgcr11;
2384 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2385 raw = ofpraw_pull_assert(&b);
2387 switch ((int) raw) {
2388 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2390 *port = u16_to_ofp(ntohs(qgcr10->port));
2393 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2395 enum ofperr error = ofputil_port_from_ofp11(qgcr11->port, port);
2396 if (error || *port == OFPP_ANY) {
2405 return (ofp_to_u16(*port) < ofp_to_u16(OFPP_MAX)
2407 : OFPERR_OFPQOFC_BAD_PORT);
2410 /* Constructs and returns the beginning of a reply to
2411 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2412 * individual queues with ofputil_append_queue_get_config_reply(). */
2414 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2416 struct ofp10_queue_get_config_reply *qgcr10;
2417 struct ofp11_queue_get_config_reply *qgcr11;
2418 struct ofpbuf *reply;
2424 error = ofputil_decode_queue_get_config_request(oh, &port);
2427 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2428 raw = ofpraw_pull_assert(&b);
2430 switch ((int) raw) {
2431 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2432 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2434 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2435 qgcr10->port = htons(ofp_to_u16(port));
2438 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2439 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2441 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2442 qgcr11->port = ofputil_port_to_ofp11(port);
2453 put_ofp10_queue_rate(struct ofpbuf *reply,
2454 enum ofp10_queue_properties property, uint16_t rate)
2456 if (rate != UINT16_MAX) {
2457 struct ofp10_queue_prop_rate *oqpr;
2459 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2460 oqpr->prop_header.property = htons(property);
2461 oqpr->prop_header.len = htons(sizeof *oqpr);
2462 oqpr->rate = htons(rate);
2466 /* Appends a queue description for 'queue_id' to the
2467 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2469 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2470 const struct ofputil_queue_config *oqc)
2472 const struct ofp_header *oh = reply->data;
2473 size_t start_ofs, len_ofs;
2476 start_ofs = reply->size;
2477 if (oh->version < OFP12_VERSION) {
2478 struct ofp10_packet_queue *opq10;
2480 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2481 opq10->queue_id = htonl(oqc->queue_id);
2482 len_ofs = (char *) &opq10->len - (char *) reply->data;
2484 struct ofp12_packet_queue *opq12;
2486 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2487 opq12->port = ofputil_port_to_ofp11(oqc->port);
2488 opq12->queue_id = htonl(oqc->queue_id);
2489 len_ofs = (char *) &opq12->len - (char *) reply->data;
2492 put_ofp10_queue_rate(reply, OFPQT10_MIN_RATE, oqc->min_rate);
2493 put_ofp10_queue_rate(reply, OFPQT11_MAX_RATE, oqc->max_rate);
2495 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2496 *len = htons(reply->size - start_ofs);
2499 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2500 * stores in '*port' the port that the reply is about. The caller may call
2501 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2502 * queues included in the reply. Returns 0 if successful, otherwise an
2505 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2507 const struct ofp10_queue_get_config_reply *qgcr10;
2508 const struct ofp11_queue_get_config_reply *qgcr11;
2511 raw = ofpraw_pull_assert(reply);
2512 switch ((int) raw) {
2513 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2514 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2515 *port = u16_to_ofp(ntohs(qgcr10->port));
2518 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2519 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2520 return ofputil_port_from_ofp11(qgcr11->port, port);
2527 parse_ofp10_queue_rate(const struct ofp10_queue_prop_header *hdr,
2530 const struct ofp10_queue_prop_rate *oqpr;
2532 if (hdr->len == htons(sizeof *oqpr)) {
2533 oqpr = (const struct ofp10_queue_prop_rate *) hdr;
2534 *rate = ntohs(oqpr->rate);
2537 return OFPERR_OFPBRC_BAD_LEN;
2541 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2542 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2543 * must already have pulled off the main header.
2545 * This function returns EOF if the last queue has already been decoded, 0 if a
2546 * queue was successfully decoded into '*queue', or an ofperr if there was a
2547 * problem decoding 'reply'. */
2549 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2550 struct ofputil_queue_config *queue)
2552 const struct ofp_header *oh;
2553 unsigned int opq_len;
2560 queue->min_rate = UINT16_MAX;
2561 queue->max_rate = UINT16_MAX;
2564 if (oh->version < OFP12_VERSION) {
2565 const struct ofp10_packet_queue *opq10;
2567 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2569 return OFPERR_OFPBRC_BAD_LEN;
2571 queue->queue_id = ntohl(opq10->queue_id);
2572 len = ntohs(opq10->len);
2573 opq_len = sizeof *opq10;
2575 const struct ofp12_packet_queue *opq12;
2577 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2579 return OFPERR_OFPBRC_BAD_LEN;
2581 queue->queue_id = ntohl(opq12->queue_id);
2582 len = ntohs(opq12->len);
2583 opq_len = sizeof *opq12;
2586 if (len < opq_len || len > reply->size + opq_len || len % 8) {
2587 return OFPERR_OFPBRC_BAD_LEN;
2592 const struct ofp10_queue_prop_header *hdr;
2593 unsigned int property;
2594 unsigned int prop_len;
2595 enum ofperr error = 0;
2597 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2598 prop_len = ntohs(hdr->len);
2599 if (prop_len < sizeof *hdr || prop_len > reply->size || prop_len % 8) {
2600 return OFPERR_OFPBRC_BAD_LEN;
2603 property = ntohs(hdr->property);
2605 case OFPQT10_MIN_RATE:
2606 error = parse_ofp10_queue_rate(hdr, &queue->min_rate);
2609 case OFPQT11_MAX_RATE:
2610 error = parse_ofp10_queue_rate(hdr, &queue->max_rate);
2614 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2621 ofpbuf_pull(reply, prop_len);
2627 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2628 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2629 * successful, otherwise an OpenFlow error code. */
2631 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2632 const struct ofp_header *oh)
2637 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2638 raw = ofpraw_pull_assert(&b);
2639 switch ((int) raw) {
2640 case OFPRAW_OFPST10_FLOW_REQUEST:
2641 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2643 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2644 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2646 case OFPRAW_OFPST11_FLOW_REQUEST:
2647 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2649 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2650 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2652 case OFPRAW_NXST_FLOW_REQUEST:
2653 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2655 case OFPRAW_NXST_AGGREGATE_REQUEST:
2656 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2659 /* Hey, the caller lied. */
2664 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2665 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2666 * 'protocol', and returns the message. */
2668 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2669 enum ofputil_protocol protocol)
2675 case OFPUTIL_P_OF11_STD:
2676 case OFPUTIL_P_OF12_OXM:
2677 case OFPUTIL_P_OF13_OXM:
2678 case OFPUTIL_P_OF14_OXM:
2679 case OFPUTIL_P_OF15_OXM: {
2680 struct ofp11_flow_stats_request *ofsr;
2682 raw = (fsr->aggregate
2683 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2684 : OFPRAW_OFPST11_FLOW_REQUEST);
2685 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2686 ofputil_match_typical_len(protocol));
2687 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2688 ofsr->table_id = fsr->table_id;
2689 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2690 ofsr->out_group = htonl(fsr->out_group);
2691 ofsr->cookie = fsr->cookie;
2692 ofsr->cookie_mask = fsr->cookie_mask;
2693 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2697 case OFPUTIL_P_OF10_STD:
2698 case OFPUTIL_P_OF10_STD_TID: {
2699 struct ofp10_flow_stats_request *ofsr;
2701 raw = (fsr->aggregate
2702 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2703 : OFPRAW_OFPST10_FLOW_REQUEST);
2704 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2705 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2706 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2707 ofsr->table_id = fsr->table_id;
2708 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2712 case OFPUTIL_P_OF10_NXM:
2713 case OFPUTIL_P_OF10_NXM_TID: {
2714 struct nx_flow_stats_request *nfsr;
2717 raw = (fsr->aggregate
2718 ? OFPRAW_NXST_AGGREGATE_REQUEST
2719 : OFPRAW_NXST_FLOW_REQUEST);
2720 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2721 ofpbuf_put_zeros(msg, sizeof *nfsr);
2722 match_len = nx_put_match(msg, &fsr->match,
2723 fsr->cookie, fsr->cookie_mask);
2726 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2727 nfsr->match_len = htons(match_len);
2728 nfsr->table_id = fsr->table_id;
2739 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2740 * ofputil_flow_stats in 'fs'.
2742 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2743 * OpenFlow message. Calling this function multiple times for a single 'msg'
2744 * iterates through the replies. The caller must initially leave 'msg''s layer
2745 * pointers null and not modify them between calls.
2747 * Most switches don't send the values needed to populate fs->idle_age and
2748 * fs->hard_age, so those members will usually be set to 0. If the switch from
2749 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2750 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2751 * 'idle_age' and 'hard_age' members in 'fs'.
2753 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2754 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2755 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2757 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2758 * otherwise a positive errno value. */
2760 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2762 bool flow_age_extension,
2763 struct ofpbuf *ofpacts)
2765 const struct ofp_header *oh;
2766 size_t instructions_len;
2770 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2771 : ofpraw_pull(&raw, msg));
2779 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2780 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2781 const struct ofp11_flow_stats *ofs;
2783 uint16_t padded_match_len;
2785 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2787 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2788 "bytes at end", msg->size);
2792 length = ntohs(ofs->length);
2793 if (length < sizeof *ofs) {
2794 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2795 "length %"PRIuSIZE, length);
2799 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2800 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2803 instructions_len = length - sizeof *ofs - padded_match_len;
2805 fs->priority = ntohs(ofs->priority);
2806 fs->table_id = ofs->table_id;
2807 fs->duration_sec = ntohl(ofs->duration_sec);
2808 fs->duration_nsec = ntohl(ofs->duration_nsec);
2809 fs->idle_timeout = ntohs(ofs->idle_timeout);
2810 fs->hard_timeout = ntohs(ofs->hard_timeout);
2811 if (oh->version >= OFP14_VERSION) {
2812 fs->importance = ntohs(ofs->importance);
2816 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2817 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2827 fs->cookie = ofs->cookie;
2828 fs->packet_count = ntohll(ofs->packet_count);
2829 fs->byte_count = ntohll(ofs->byte_count);
2830 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2831 const struct ofp10_flow_stats *ofs;
2834 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2836 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2837 "bytes at end", msg->size);
2841 length = ntohs(ofs->length);
2842 if (length < sizeof *ofs) {
2843 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2844 "length %"PRIuSIZE, length);
2847 instructions_len = length - sizeof *ofs;
2849 fs->cookie = get_32aligned_be64(&ofs->cookie);
2850 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2851 fs->priority = ntohs(ofs->priority);
2852 fs->table_id = ofs->table_id;
2853 fs->duration_sec = ntohl(ofs->duration_sec);
2854 fs->duration_nsec = ntohl(ofs->duration_nsec);
2855 fs->idle_timeout = ntohs(ofs->idle_timeout);
2856 fs->hard_timeout = ntohs(ofs->hard_timeout);
2860 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2861 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2863 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2864 const struct nx_flow_stats *nfs;
2865 size_t match_len, length;
2867 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2869 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2870 "bytes at end", msg->size);
2874 length = ntohs(nfs->length);
2875 match_len = ntohs(nfs->match_len);
2876 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2877 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2878 "claims invalid length %"PRIuSIZE, match_len, length);
2881 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2884 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2886 fs->cookie = nfs->cookie;
2887 fs->table_id = nfs->table_id;
2888 fs->duration_sec = ntohl(nfs->duration_sec);
2889 fs->duration_nsec = ntohl(nfs->duration_nsec);
2890 fs->priority = ntohs(nfs->priority);
2891 fs->idle_timeout = ntohs(nfs->idle_timeout);
2892 fs->hard_timeout = ntohs(nfs->hard_timeout);
2896 if (flow_age_extension) {
2897 if (nfs->idle_age) {
2898 fs->idle_age = ntohs(nfs->idle_age) - 1;
2900 if (nfs->hard_age) {
2901 fs->hard_age = ntohs(nfs->hard_age) - 1;
2904 fs->packet_count = ntohll(nfs->packet_count);
2905 fs->byte_count = ntohll(nfs->byte_count);
2911 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
2913 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2916 fs->ofpacts = ofpacts->data;
2917 fs->ofpacts_len = ofpacts->size;
2922 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2924 * We use this in situations where OVS internally uses UINT64_MAX to mean
2925 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2927 unknown_to_zero(uint64_t count)
2929 return count != UINT64_MAX ? count : 0;
2932 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2933 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2934 * have been initialized with ofpmp_init(). */
2936 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2937 struct ovs_list *replies)
2939 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2940 size_t start_ofs = reply->size;
2941 enum ofp_version version = ofpmp_version(replies);
2942 enum ofpraw raw = ofpmp_decode_raw(replies);
2944 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2945 struct ofp11_flow_stats *ofs;
2947 ofpbuf_put_uninit(reply, sizeof *ofs);
2948 oxm_put_match(reply, &fs->match, version);
2949 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
2952 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2953 ofs->length = htons(reply->size - start_ofs);
2954 ofs->table_id = fs->table_id;
2956 ofs->duration_sec = htonl(fs->duration_sec);
2957 ofs->duration_nsec = htonl(fs->duration_nsec);
2958 ofs->priority = htons(fs->priority);
2959 ofs->idle_timeout = htons(fs->idle_timeout);
2960 ofs->hard_timeout = htons(fs->hard_timeout);
2961 if (version >= OFP14_VERSION) {
2962 ofs->importance = htons(fs->importance);
2964 ofs->importance = 0;
2966 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2967 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
2971 memset(ofs->pad2, 0, sizeof ofs->pad2);
2972 ofs->cookie = fs->cookie;
2973 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
2974 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
2975 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2976 struct ofp10_flow_stats *ofs;
2978 ofpbuf_put_uninit(reply, sizeof *ofs);
2979 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
2981 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2982 ofs->length = htons(reply->size - start_ofs);
2983 ofs->table_id = fs->table_id;
2985 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
2986 ofs->duration_sec = htonl(fs->duration_sec);
2987 ofs->duration_nsec = htonl(fs->duration_nsec);
2988 ofs->priority = htons(fs->priority);
2989 ofs->idle_timeout = htons(fs->idle_timeout);
2990 ofs->hard_timeout = htons(fs->hard_timeout);
2991 memset(ofs->pad2, 0, sizeof ofs->pad2);
2992 put_32aligned_be64(&ofs->cookie, fs->cookie);
2993 put_32aligned_be64(&ofs->packet_count,
2994 htonll(unknown_to_zero(fs->packet_count)));
2995 put_32aligned_be64(&ofs->byte_count,
2996 htonll(unknown_to_zero(fs->byte_count)));
2997 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2998 struct nx_flow_stats *nfs;
3001 ofpbuf_put_uninit(reply, sizeof *nfs);
3002 match_len = nx_put_match(reply, &fs->match, 0, 0);
3003 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3005 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3006 nfs->length = htons(reply->size - start_ofs);
3007 nfs->table_id = fs->table_id;
3009 nfs->duration_sec = htonl(fs->duration_sec);
3010 nfs->duration_nsec = htonl(fs->duration_nsec);
3011 nfs->priority = htons(fs->priority);
3012 nfs->idle_timeout = htons(fs->idle_timeout);
3013 nfs->hard_timeout = htons(fs->hard_timeout);
3014 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3015 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3017 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3018 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3020 nfs->match_len = htons(match_len);
3021 nfs->cookie = fs->cookie;
3022 nfs->packet_count = htonll(fs->packet_count);
3023 nfs->byte_count = htonll(fs->byte_count);
3028 ofpmp_postappend(replies, start_ofs);
3031 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3032 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3034 ofputil_encode_aggregate_stats_reply(
3035 const struct ofputil_aggregate_stats *stats,
3036 const struct ofp_header *request)
3038 struct ofp_aggregate_stats_reply *asr;
3039 uint64_t packet_count;
3040 uint64_t byte_count;
3044 ofpraw_decode(&raw, request);
3045 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3046 packet_count = unknown_to_zero(stats->packet_count);
3047 byte_count = unknown_to_zero(stats->byte_count);
3049 packet_count = stats->packet_count;
3050 byte_count = stats->byte_count;
3053 msg = ofpraw_alloc_stats_reply(request, 0);
3054 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3055 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3056 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3057 asr->flow_count = htonl(stats->flow_count);
3063 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3064 const struct ofp_header *reply)
3066 struct ofp_aggregate_stats_reply *asr;
3069 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3070 ofpraw_pull_assert(&msg);
3073 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3074 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3075 stats->flow_count = ntohl(asr->flow_count);
3080 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3081 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3082 * an OpenFlow error code. */
3084 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3085 const struct ofp_header *oh)
3090 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3091 raw = ofpraw_pull_assert(&b);
3092 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3093 const struct ofp12_flow_removed *ofr;
3096 ofr = ofpbuf_pull(&b, sizeof *ofr);
3098 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3103 fr->priority = ntohs(ofr->priority);
3104 fr->cookie = ofr->cookie;
3105 fr->reason = ofr->reason;
3106 fr->table_id = ofr->table_id;
3107 fr->duration_sec = ntohl(ofr->duration_sec);
3108 fr->duration_nsec = ntohl(ofr->duration_nsec);
3109 fr->idle_timeout = ntohs(ofr->idle_timeout);
3110 fr->hard_timeout = ntohs(ofr->hard_timeout);
3111 fr->packet_count = ntohll(ofr->packet_count);
3112 fr->byte_count = ntohll(ofr->byte_count);
3113 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3114 const struct ofp10_flow_removed *ofr;
3116 ofr = ofpbuf_pull(&b, sizeof *ofr);
3118 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3119 fr->priority = ntohs(ofr->priority);
3120 fr->cookie = ofr->cookie;
3121 fr->reason = ofr->reason;
3123 fr->duration_sec = ntohl(ofr->duration_sec);
3124 fr->duration_nsec = ntohl(ofr->duration_nsec);
3125 fr->idle_timeout = ntohs(ofr->idle_timeout);
3126 fr->hard_timeout = 0;
3127 fr->packet_count = ntohll(ofr->packet_count);
3128 fr->byte_count = ntohll(ofr->byte_count);
3129 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3130 struct nx_flow_removed *nfr;
3133 nfr = ofpbuf_pull(&b, sizeof *nfr);
3134 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3140 return OFPERR_OFPBRC_BAD_LEN;
3143 fr->priority = ntohs(nfr->priority);
3144 fr->cookie = nfr->cookie;
3145 fr->reason = nfr->reason;
3146 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3147 fr->duration_sec = ntohl(nfr->duration_sec);
3148 fr->duration_nsec = ntohl(nfr->duration_nsec);
3149 fr->idle_timeout = ntohs(nfr->idle_timeout);
3150 fr->hard_timeout = 0;
3151 fr->packet_count = ntohll(nfr->packet_count);
3152 fr->byte_count = ntohll(nfr->byte_count);
3160 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3161 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3164 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3165 enum ofputil_protocol protocol)
3168 enum ofp_flow_removed_reason reason = fr->reason;
3170 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3171 reason = OFPRR_DELETE;
3175 case OFPUTIL_P_OF11_STD:
3176 case OFPUTIL_P_OF12_OXM:
3177 case OFPUTIL_P_OF13_OXM:
3178 case OFPUTIL_P_OF14_OXM:
3179 case OFPUTIL_P_OF15_OXM: {
3180 struct ofp12_flow_removed *ofr;
3182 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3183 ofputil_protocol_to_ofp_version(protocol),
3185 ofputil_match_typical_len(protocol));
3186 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3187 ofr->cookie = fr->cookie;
3188 ofr->priority = htons(fr->priority);
3189 ofr->reason = reason;
3190 ofr->table_id = fr->table_id;
3191 ofr->duration_sec = htonl(fr->duration_sec);
3192 ofr->duration_nsec = htonl(fr->duration_nsec);
3193 ofr->idle_timeout = htons(fr->idle_timeout);
3194 ofr->hard_timeout = htons(fr->hard_timeout);
3195 ofr->packet_count = htonll(fr->packet_count);
3196 ofr->byte_count = htonll(fr->byte_count);
3197 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3201 case OFPUTIL_P_OF10_STD:
3202 case OFPUTIL_P_OF10_STD_TID: {
3203 struct ofp10_flow_removed *ofr;
3205 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3207 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3208 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3209 ofr->cookie = fr->cookie;
3210 ofr->priority = htons(fr->priority);
3211 ofr->reason = reason;
3212 ofr->duration_sec = htonl(fr->duration_sec);
3213 ofr->duration_nsec = htonl(fr->duration_nsec);
3214 ofr->idle_timeout = htons(fr->idle_timeout);
3215 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3216 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3220 case OFPUTIL_P_OF10_NXM:
3221 case OFPUTIL_P_OF10_NXM_TID: {
3222 struct nx_flow_removed *nfr;
3225 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3226 htonl(0), NXM_TYPICAL_LEN);
3227 ofpbuf_put_zeros(msg, sizeof *nfr);
3228 match_len = nx_put_match(msg, &fr->match, 0, 0);
3231 nfr->cookie = fr->cookie;
3232 nfr->priority = htons(fr->priority);
3233 nfr->reason = reason;
3234 nfr->table_id = fr->table_id + 1;
3235 nfr->duration_sec = htonl(fr->duration_sec);
3236 nfr->duration_nsec = htonl(fr->duration_nsec);
3237 nfr->idle_timeout = htons(fr->idle_timeout);
3238 nfr->match_len = htons(match_len);
3239 nfr->packet_count = htonll(fr->packet_count);
3240 nfr->byte_count = htonll(fr->byte_count);
3252 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3253 const struct ofp_header *oh)
3258 memset(pin, 0, sizeof *pin);
3259 pin->cookie = OVS_BE64_MAX;
3261 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3262 raw = ofpraw_pull_assert(&b);
3263 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3264 const struct ofp13_packet_in *opi;
3266 size_t packet_in_size;
3268 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3269 packet_in_size = sizeof (struct ofp12_packet_in);
3271 packet_in_size = sizeof (struct ofp13_packet_in);
3274 opi = ofpbuf_pull(&b, packet_in_size);
3275 error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3280 if (!ofpbuf_try_pull(&b, 2)) {
3281 return OFPERR_OFPBRC_BAD_LEN;
3284 pin->reason = opi->pi.reason;
3285 pin->table_id = opi->pi.table_id;
3286 pin->buffer_id = ntohl(opi->pi.buffer_id);
3287 pin->total_len = ntohs(opi->pi.total_len);
3289 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3290 pin->cookie = opi->cookie;
3293 pin->packet = b.data;
3294 pin->packet_len = b.size;
3295 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3296 const struct ofp10_packet_in *opi;
3298 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3300 pin->packet = opi->data;
3301 pin->packet_len = b.size;
3303 match_init_catchall(&pin->flow_metadata);
3304 match_set_in_port(&pin->flow_metadata, u16_to_ofp(ntohs(opi->in_port)));
3305 pin->reason = opi->reason;
3306 pin->buffer_id = ntohl(opi->buffer_id);
3307 pin->total_len = ntohs(opi->total_len);
3308 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3309 const struct ofp11_packet_in *opi;
3313 opi = ofpbuf_pull(&b, sizeof *opi);
3315 pin->packet = b.data;
3316 pin->packet_len = b.size;
3318 pin->buffer_id = ntohl(opi->buffer_id);
3319 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3323 match_init_catchall(&pin->flow_metadata);
3324 match_set_in_port(&pin->flow_metadata, in_port);
3325 pin->total_len = ntohs(opi->total_len);
3326 pin->reason = opi->reason;
3327 pin->table_id = opi->table_id;
3328 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3329 const struct nx_packet_in *npi;
3332 npi = ofpbuf_pull(&b, sizeof *npi);
3333 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3334 &pin->flow_metadata, NULL, NULL);
3339 if (!ofpbuf_try_pull(&b, 2)) {
3340 return OFPERR_OFPBRC_BAD_LEN;
3343 pin->reason = npi->reason;
3344 pin->table_id = npi->table_id;
3345 pin->cookie = npi->cookie;
3347 pin->buffer_id = ntohl(npi->buffer_id);
3348 pin->total_len = ntohs(npi->total_len);
3350 pin->packet = b.data;
3351 pin->packet_len = b.size;
3359 static struct ofpbuf *
3360 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3362 struct ofp10_packet_in *opi;
3363 struct ofpbuf *packet;
3365 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3366 htonl(0), pin->packet_len);
3367 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3368 opi->total_len = htons(pin->total_len);
3369 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3370 opi->reason = pin->reason;
3371 opi->buffer_id = htonl(pin->buffer_id);
3373 ofpbuf_put(packet, pin->packet, pin->packet_len);
3378 static struct ofpbuf *
3379 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3381 struct nx_packet_in *npi;
3382 struct ofpbuf *packet;
3385 /* The final argument is just an estimate of the space required. */
3386 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3387 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3388 ofpbuf_put_zeros(packet, sizeof *npi);
3389 match_len = nx_put_match(packet, &pin->flow_metadata, 0, 0);
3390 ofpbuf_put_zeros(packet, 2);
3391 ofpbuf_put(packet, pin->packet, pin->packet_len);
3394 npi->buffer_id = htonl(pin->buffer_id);
3395 npi->total_len = htons(pin->total_len);
3396 npi->reason = pin->reason;
3397 npi->table_id = pin->table_id;
3398 npi->cookie = pin->cookie;
3399 npi->match_len = htons(match_len);
3404 static struct ofpbuf *
3405 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3407 struct ofp11_packet_in *opi;
3408 struct ofpbuf *packet;
3410 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3411 htonl(0), pin->packet_len);
3412 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3413 opi->buffer_id = htonl(pin->buffer_id);
3414 opi->in_port = ofputil_port_to_ofp11(pin->flow_metadata.flow.in_port.ofp_port);
3415 opi->in_phy_port = opi->in_port;
3416 opi->total_len = htons(pin->total_len);
3417 opi->reason = pin->reason;
3418 opi->table_id = pin->table_id;
3420 ofpbuf_put(packet, pin->packet, pin->packet_len);
3425 static struct ofpbuf *
3426 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3427 enum ofputil_protocol protocol)
3429 struct ofp13_packet_in *opi;
3430 enum ofpraw packet_in_raw;
3431 enum ofp_version packet_in_version;
3432 size_t packet_in_size;
3433 struct ofpbuf *packet;
3435 if (protocol == OFPUTIL_P_OF12_OXM) {
3436 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3437 packet_in_version = OFP12_VERSION;
3438 packet_in_size = sizeof (struct ofp12_packet_in);
3440 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3441 packet_in_version = ofputil_protocol_to_ofp_version(protocol);
3442 packet_in_size = sizeof (struct ofp13_packet_in);
3445 /* The final argument is just an estimate of the space required. */
3446 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3447 htonl(0), NXM_TYPICAL_LEN + 2 + pin->packet_len);
3448 ofpbuf_put_zeros(packet, packet_in_size);
3449 oxm_put_match(packet, &pin->flow_metadata,
3450 ofputil_protocol_to_ofp_version(protocol));
3451 ofpbuf_put_zeros(packet, 2);
3452 ofpbuf_put(packet, pin->packet, pin->packet_len);
3455 opi->pi.buffer_id = htonl(pin->buffer_id);
3456 opi->pi.total_len = htons(pin->total_len);
3457 opi->pi.reason = pin->reason;
3458 opi->pi.table_id = pin->table_id;
3459 if (protocol != OFPUTIL_P_OF12_OXM) {
3460 opi->cookie = pin->cookie;
3466 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3467 * in the format specified by 'packet_in_format'. */
3469 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3470 enum ofputil_protocol protocol,
3471 enum nx_packet_in_format packet_in_format)
3473 struct ofpbuf *packet;
3476 case OFPUTIL_P_OF10_STD:
3477 case OFPUTIL_P_OF10_STD_TID:
3478 case OFPUTIL_P_OF10_NXM:
3479 case OFPUTIL_P_OF10_NXM_TID:
3480 packet = (packet_in_format == NXPIF_NXM
3481 ? ofputil_encode_nx_packet_in(pin)
3482 : ofputil_encode_ofp10_packet_in(pin));
3485 case OFPUTIL_P_OF11_STD:
3486 packet = ofputil_encode_ofp11_packet_in(pin);
3489 case OFPUTIL_P_OF12_OXM:
3490 case OFPUTIL_P_OF13_OXM:
3491 case OFPUTIL_P_OF14_OXM:
3492 case OFPUTIL_P_OF15_OXM:
3493 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3500 ofpmsg_update_length(packet);
3504 /* Returns a string form of 'reason'. The return value is either a statically
3505 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3506 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3508 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3509 char *reasonbuf, size_t bufsize)
3516 case OFPR_INVALID_TTL:
3517 return "invalid_ttl";
3518 case OFPR_ACTION_SET:
3519 return "action_set";
3522 case OFPR_PACKET_OUT:
3523 return "packet_out";
3525 case OFPR_N_REASONS:
3527 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3533 ofputil_packet_in_reason_from_string(const char *s,
3534 enum ofp_packet_in_reason *reason)
3538 for (i = 0; i < OFPR_N_REASONS; i++) {
3539 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3540 const char *reason_s;
3542 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3544 if (!strcasecmp(s, reason_s)) {
3552 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3555 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3556 * message's actions. The caller must initialize 'ofpacts' and retains
3557 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3559 * Returns 0 if successful, otherwise an OFPERR_* value. */
3561 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3562 const struct ofp_header *oh,
3563 struct ofpbuf *ofpacts)
3568 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3569 raw = ofpraw_pull_assert(&b);
3571 ofpbuf_clear(ofpacts);
3572 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3574 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3576 po->buffer_id = ntohl(opo->buffer_id);
3577 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3582 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3583 oh->version, ofpacts);
3587 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3589 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3591 po->buffer_id = ntohl(opo->buffer_id);
3592 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3594 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3595 oh->version, ofpacts);
3603 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3604 && po->in_port != OFPP_LOCAL
3605 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3606 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3608 return OFPERR_OFPBRC_BAD_PORT;
3611 po->ofpacts = ofpacts->data;
3612 po->ofpacts_len = ofpacts->size;
3614 if (po->buffer_id == UINT32_MAX) {
3615 po->packet = b.data;
3616 po->packet_len = b.size;
3625 /* ofputil_phy_port */
3627 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3628 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3629 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3630 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3631 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3632 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3633 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3634 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3636 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3637 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3638 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3639 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3640 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3641 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3643 static enum netdev_features
3644 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3646 uint32_t ofp10 = ntohl(ofp10_);
3647 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3651 netdev_port_features_to_ofp10(enum netdev_features features)
3653 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3656 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3657 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3658 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3659 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3660 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3661 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3662 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3663 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3664 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3665 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3666 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3667 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3668 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3669 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3670 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3671 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3673 static enum netdev_features
3674 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3676 return ntohl(ofp11) & 0xffff;
3680 netdev_port_features_to_ofp11(enum netdev_features features)
3682 return htonl(features & 0xffff);
3686 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3687 const struct ofp10_phy_port *opp)
3689 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3690 pp->hw_addr = opp->hw_addr;
3691 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3693 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3694 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3696 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3697 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3698 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3699 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3701 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3702 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3708 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3709 const struct ofp11_port *op)
3713 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3717 pp->hw_addr = op->hw_addr;
3718 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3720 pp->config = ntohl(op->config) & OFPPC11_ALL;
3721 pp->state = ntohl(op->state) & OFPPS11_ALL;
3723 pp->curr = netdev_port_features_from_ofp11(op->curr);
3724 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3725 pp->supported = netdev_port_features_from_ofp11(op->supported);
3726 pp->peer = netdev_port_features_from_ofp11(op->peer);
3728 pp->curr_speed = ntohl(op->curr_speed);
3729 pp->max_speed = ntohl(op->max_speed);
3735 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3736 struct ofputil_phy_port *pp)
3738 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3740 if (payload->size != sizeof *eth) {
3741 return OFPERR_OFPBPC_BAD_LEN;
3744 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3745 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3746 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3747 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3749 pp->curr_speed = ntohl(eth->curr_speed);
3750 pp->max_speed = ntohl(eth->max_speed);
3756 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3758 struct ofpbuf properties;
3759 struct ofp14_port *op;
3763 op = ofpbuf_try_pull(msg, sizeof *op);
3765 return OFPERR_OFPBRC_BAD_LEN;
3768 len = ntohs(op->length);
3769 if (len < sizeof *op || len - sizeof *op > msg->size) {
3770 return OFPERR_OFPBRC_BAD_LEN;
3773 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3775 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3779 pp->hw_addr = op->hw_addr;
3780 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3782 pp->config = ntohl(op->config) & OFPPC11_ALL;
3783 pp->state = ntohl(op->state) & OFPPS11_ALL;
3785 while (properties.size > 0) {
3786 struct ofpbuf payload;
3790 error = ofpprop_pull(&properties, &payload, &type);
3796 case OFPPDPT14_ETHERNET:
3797 error = parse_ofp14_port_ethernet_property(&payload, pp);
3801 error = OFPPROP_UNKNOWN(true, "port", type);
3814 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3815 struct ofp10_phy_port *opp)
3817 memset(opp, 0, sizeof *opp);
3819 opp->port_no = htons(ofp_to_u16(pp->port_no));
3820 opp->hw_addr = pp->hw_addr;
3821 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3823 opp->config = htonl(pp->config & OFPPC10_ALL);
3824 opp->state = htonl(pp->state & OFPPS10_ALL);
3826 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3827 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3828 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3829 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3833 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3834 struct ofp11_port *op)
3836 memset(op, 0, sizeof *op);
3838 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3839 op->hw_addr = pp->hw_addr;
3840 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3842 op->config = htonl(pp->config & OFPPC11_ALL);
3843 op->state = htonl(pp->state & OFPPS11_ALL);
3845 op->curr = netdev_port_features_to_ofp11(pp->curr);
3846 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3847 op->supported = netdev_port_features_to_ofp11(pp->supported);
3848 op->peer = netdev_port_features_to_ofp11(pp->peer);
3850 op->curr_speed = htonl(pp->curr_speed);
3851 op->max_speed = htonl(pp->max_speed);
3855 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3858 struct ofp14_port *op;
3859 struct ofp14_port_desc_prop_ethernet *eth;
3861 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3863 op = ofpbuf_put_zeros(b, sizeof *op);
3864 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3865 op->length = htons(sizeof *op + sizeof *eth);
3866 op->hw_addr = pp->hw_addr;
3867 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3868 op->config = htonl(pp->config & OFPPC11_ALL);
3869 op->state = htonl(pp->state & OFPPS11_ALL);
3871 eth = ofpprop_put_zeros(b, OFPPDPT14_ETHERNET, sizeof *eth);
3872 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3873 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3874 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3875 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3876 eth->curr_speed = htonl(pp->curr_speed);
3877 eth->max_speed = htonl(pp->max_speed);
3881 ofputil_put_phy_port(enum ofp_version ofp_version,
3882 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3884 switch (ofp_version) {
3885 case OFP10_VERSION: {
3886 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3887 ofputil_encode_ofp10_phy_port(pp, opp);
3893 case OFP13_VERSION: {
3894 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3895 ofputil_encode_ofp11_port(pp, op);
3901 ofputil_put_ofp14_port(pp, b);
3910 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
3916 ofpbuf_use_const(&b, request, ntohs(request->length));
3917 raw = ofpraw_pull_assert(&b);
3918 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
3921 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
3922 ovs_be32 *ofp11_port;
3924 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
3925 return ofputil_port_from_ofp11(*ofp11_port, port);
3932 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
3935 struct ofpbuf *request;
3937 switch (ofp_version) {
3943 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
3946 case OFP15_VERSION:{
3947 struct ofp15_port_desc_request *req;
3948 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
3950 req = ofpbuf_put_zeros(request, sizeof *req);
3951 req->port_no = ofputil_port_to_ofp11(port);
3962 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
3963 struct ovs_list *replies)
3965 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
3966 size_t start_ofs = reply->size;
3968 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
3969 ofpmp_postappend(replies, start_ofs);
3972 /* ofputil_switch_config */
3974 /* Decodes 'oh', which must be an OFPT_GET_CONFIG_REPLY or OFPT_SET_CONFIG
3975 * message, into 'config'. Returns false if 'oh' contained any flags that
3976 * aren't specified in its version of OpenFlow, true otherwise. */
3978 ofputil_decode_switch_config(const struct ofp_header *oh,
3979 struct ofputil_switch_config *config)
3981 const struct ofp_switch_config *osc;
3984 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3985 ofpraw_pull_assert(&b);
3986 osc = ofpbuf_pull(&b, sizeof *osc);
3988 config->frag = ntohs(osc->flags) & OFPC_FRAG_MASK;
3989 config->miss_send_len = ntohs(osc->miss_send_len);
3991 ovs_be16 valid_mask = htons(OFPC_FRAG_MASK);
3992 if (oh->version < OFP13_VERSION) {
3993 const ovs_be16 ttl_bit = htons(OFPC_INVALID_TTL_TO_CONTROLLER);
3994 valid_mask |= ttl_bit;
3995 config->invalid_ttl_to_controller = (osc->flags & ttl_bit) != 0;
3997 config->invalid_ttl_to_controller = -1;
4000 return !(osc->flags & ~valid_mask);
4004 ofputil_decode_get_config_reply(const struct ofp_header *oh,
4005 struct ofputil_switch_config *config)
4007 ofputil_decode_switch_config(oh, config);
4011 ofputil_decode_set_config(const struct ofp_header *oh,
4012 struct ofputil_switch_config *config)
4014 return (ofputil_decode_switch_config(oh, config)
4016 : OFPERR_OFPSCFC_BAD_FLAGS);
4019 static struct ofpbuf *
4020 ofputil_put_switch_config(const struct ofputil_switch_config *config,
4023 const struct ofp_header *oh = b->data;
4024 struct ofp_switch_config *osc = ofpbuf_put_zeros(b, sizeof *osc);
4025 osc->flags = htons(config->frag);
4026 if (config->invalid_ttl_to_controller > 0 && oh->version < OFP13_VERSION) {
4027 osc->flags |= htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4029 osc->miss_send_len = htons(config->miss_send_len);
4034 ofputil_encode_get_config_reply(const struct ofp_header *request,
4035 const struct ofputil_switch_config *config)
4037 struct ofpbuf *b = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY,
4039 return ofputil_put_switch_config(config, b);
4043 ofputil_encode_set_config(const struct ofputil_switch_config *config,
4044 enum ofp_version version)
4046 struct ofpbuf *b = ofpraw_alloc(OFPRAW_OFPT_SET_CONFIG, version, 0);
4047 return ofputil_put_switch_config(config, b);
4050 /* ofputil_switch_features */
4052 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4053 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4054 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4055 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4056 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4057 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4058 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4059 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4062 ofputil_capabilities_mask(enum ofp_version ofp_version)
4064 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4065 switch (ofp_version) {
4068 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4073 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4075 /* Caller needs to check osf->header.version itself */
4080 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4081 * abstract representation in '*features'. Initializes '*b' to iterate over
4082 * the OpenFlow port structures following 'osf' with later calls to
4083 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4084 * OFPERR_* value. */
4086 ofputil_decode_switch_features(const struct ofp_header *oh,
4087 struct ofputil_switch_features *features,
4090 const struct ofp_switch_features *osf;
4093 ofpbuf_use_const(b, oh, ntohs(oh->length));
4094 raw = ofpraw_pull_assert(b);
4096 osf = ofpbuf_pull(b, sizeof *osf);
4097 features->datapath_id = ntohll(osf->datapath_id);
4098 features->n_buffers = ntohl(osf->n_buffers);
4099 features->n_tables = osf->n_tables;
4100 features->auxiliary_id = 0;
4102 features->capabilities = ntohl(osf->capabilities) &
4103 ofputil_capabilities_mask(oh->version);
4105 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4106 if (osf->capabilities & htonl(OFPC10_STP)) {
4107 features->capabilities |= OFPUTIL_C_STP;
4109 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4111 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4112 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4113 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4114 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4116 features->ofpacts = 0;
4117 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4118 features->auxiliary_id = osf->auxiliary_id;
4121 return OFPERR_OFPBRC_BAD_VERSION;
4127 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4128 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4129 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4131 * Given a buffer 'b' that contains a Features Reply message, this message
4132 * checks if it contains a complete list of the switch's ports. Returns true,
4133 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4134 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4137 * When this function returns false, the caller should send an OFPST_PORT_DESC
4138 * stats request to get the ports. */
4140 ofputil_switch_features_has_ports(struct ofpbuf *b)
4142 struct ofp_header *oh = b->data;
4143 size_t phy_port_size;
4145 if (oh->version >= OFP13_VERSION) {
4146 /* OpenFlow 1.3+ never has ports in the feature reply. */
4150 phy_port_size = (oh->version == OFP10_VERSION
4151 ? sizeof(struct ofp10_phy_port)
4152 : sizeof(struct ofp11_port));
4153 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4154 /* There's room for additional ports in the feature reply.
4155 * Assume that the list is complete. */
4159 /* The feature reply has no room for more ports. Probably the list is
4160 * truncated. Drop the ports and tell the caller to retrieve them with
4161 * OFPST_PORT_DESC. */
4162 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4163 ofpmsg_update_length(b);
4167 /* Returns a buffer owned by the caller that encodes 'features' in the format
4168 * required by 'protocol' with the given 'xid'. The caller should append port
4169 * information to the buffer with subsequent calls to
4170 * ofputil_put_switch_features_port(). */
4172 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4173 enum ofputil_protocol protocol, ovs_be32 xid)
4175 struct ofp_switch_features *osf;
4177 enum ofp_version version;
4180 version = ofputil_protocol_to_ofp_version(protocol);
4183 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4187 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4192 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4197 b = ofpraw_alloc_xid(raw, version, xid, 0);
4198 osf = ofpbuf_put_zeros(b, sizeof *osf);
4199 osf->datapath_id = htonll(features->datapath_id);
4200 osf->n_buffers = htonl(features->n_buffers);
4201 osf->n_tables = features->n_tables;
4203 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4204 osf->capabilities = htonl(features->capabilities &
4205 ofputil_capabilities_mask(version));
4208 if (features->capabilities & OFPUTIL_C_STP) {
4209 osf->capabilities |= htonl(OFPC10_STP);
4211 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4217 osf->auxiliary_id = features->auxiliary_id;
4221 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4222 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4232 /* Encodes 'pp' into the format required by the switch_features message already
4233 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4234 * and appends the encoded version to 'b'. */
4236 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4239 const struct ofp_header *oh = b->data;
4241 if (oh->version < OFP13_VERSION) {
4242 /* Try adding a port description to the message, but drop it again if
4243 * the buffer overflows. (This possibility for overflow is why
4244 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4245 size_t start_ofs = b->size;
4246 ofputil_put_phy_port(oh->version, pp, b);
4247 if (b->size > UINT16_MAX) {
4248 b->size = start_ofs;
4253 /* ofputil_port_status */
4255 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4256 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4258 ofputil_decode_port_status(const struct ofp_header *oh,
4259 struct ofputil_port_status *ps)
4261 const struct ofp_port_status *ops;
4265 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4266 ofpraw_pull_assert(&b);
4267 ops = ofpbuf_pull(&b, sizeof *ops);
4269 if (ops->reason != OFPPR_ADD &&
4270 ops->reason != OFPPR_DELETE &&
4271 ops->reason != OFPPR_MODIFY) {
4272 return OFPERR_NXBRC_BAD_REASON;
4274 ps->reason = ops->reason;
4276 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4277 ovs_assert(retval != EOF);
4281 /* Converts the abstract form of a "port status" message in '*ps' into an
4282 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4283 * a buffer owned by the caller. */
4285 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4286 enum ofputil_protocol protocol)
4288 struct ofp_port_status *ops;
4290 enum ofp_version version;
4293 version = ofputil_protocol_to_ofp_version(protocol);
4296 raw = OFPRAW_OFPT10_PORT_STATUS;
4302 raw = OFPRAW_OFPT11_PORT_STATUS;
4307 raw = OFPRAW_OFPT14_PORT_STATUS;
4314 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4315 ops = ofpbuf_put_zeros(b, sizeof *ops);
4316 ops->reason = ps->reason;
4317 ofputil_put_phy_port(version, &ps->desc, b);
4318 ofpmsg_update_length(b);
4322 /* ofputil_port_mod */
4325 parse_port_mod_ethernet_property(struct ofpbuf *property,
4326 struct ofputil_port_mod *pm)
4331 error = ofpprop_parse_be32(property, &advertise);
4333 pm->advertise = netdev_port_features_from_ofp11(advertise);
4338 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4339 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4341 ofputil_decode_port_mod(const struct ofp_header *oh,
4342 struct ofputil_port_mod *pm, bool loose)
4347 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4348 raw = ofpraw_pull_assert(&b);
4350 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4351 const struct ofp10_port_mod *opm = b.data;
4353 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4354 pm->hw_addr = opm->hw_addr;
4355 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4356 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4357 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4358 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4359 const struct ofp11_port_mod *opm = b.data;
4362 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4367 pm->hw_addr = opm->hw_addr;
4368 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4369 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4370 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4371 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4372 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4375 memset(pm, 0, sizeof *pm);
4377 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4382 pm->hw_addr = opm->hw_addr;
4383 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4384 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4386 while (b.size > 0) {
4387 struct ofpbuf property;
4391 error = ofpprop_pull(&b, &property, &type);
4397 case OFPPMPT14_ETHERNET:
4398 error = parse_port_mod_ethernet_property(&property, pm);
4402 error = OFPPROP_UNKNOWN(loose, "port_mod", type);
4411 return OFPERR_OFPBRC_BAD_TYPE;
4414 pm->config &= pm->mask;
4418 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4419 * message suitable for 'protocol', and returns that encoded form in a buffer
4420 * owned by the caller. */
4422 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4423 enum ofputil_protocol protocol)
4425 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4428 switch (ofp_version) {
4429 case OFP10_VERSION: {
4430 struct ofp10_port_mod *opm;
4432 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4433 opm = ofpbuf_put_zeros(b, sizeof *opm);
4434 opm->port_no = htons(ofp_to_u16(pm->port_no));
4435 opm->hw_addr = pm->hw_addr;
4436 opm->config = htonl(pm->config & OFPPC10_ALL);
4437 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4438 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4444 case OFP13_VERSION: {
4445 struct ofp11_port_mod *opm;
4447 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4448 opm = ofpbuf_put_zeros(b, sizeof *opm);
4449 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4450 opm->hw_addr = pm->hw_addr;
4451 opm->config = htonl(pm->config & OFPPC11_ALL);
4452 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4453 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4457 case OFP15_VERSION: {
4458 struct ofp14_port_mod *opm;
4460 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, 0);
4461 opm = ofpbuf_put_zeros(b, sizeof *opm);
4462 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4463 opm->hw_addr = pm->hw_addr;
4464 opm->config = htonl(pm->config & OFPPC11_ALL);
4465 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4467 if (pm->advertise) {
4468 ofpprop_put_be32(b, OFPPMPT14_ETHERNET,
4469 netdev_port_features_to_ofp11(pm->advertise));
4480 /* Table features. */
4483 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4488 error = ofpprop_pull(msg, payload, typep);
4489 if (payload && !error) {
4490 ofpbuf_pull(payload, (char *)payload->msg - (char *)payload->header);
4496 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4501 while (payload->size > 0) {
4505 error = ofpprop_pull__(payload, NULL, 1, 0x10000, &type);
4509 if (type < CHAR_BIT * sizeof types) {
4510 types |= 1u << type;
4514 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4519 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4522 while (payload->size > 0) {
4523 enum ovs_instruction_type inst;
4527 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4528 * It seems clear that they aren't padded to 8 bytes, though, because
4529 * both standards say that "non-experimenter instructions are 4 bytes"
4530 * and do not mention any padding before the first instruction ID.
4531 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4532 * aligned on an odd 4-byte boundary.)
4534 * Anyway, we just assume they're all glommed together on byte
4536 error = ofpprop_pull__(payload, NULL, 1, 0x10000, &ofpit);
4541 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4543 *insts |= 1u << inst;
4544 } else if (!loose) {
4552 parse_table_features_next_table(struct ofpbuf *payload,
4553 unsigned long int *next_tables)
4557 memset(next_tables, 0, bitmap_n_bytes(255));
4558 for (i = 0; i < payload->size; i++) {
4559 uint8_t id = ((const uint8_t *) payload->data)[i];
4561 return OFPERR_OFPBPC_BAD_VALUE;
4563 bitmap_set1(next_tables, id);
4569 parse_oxms(struct ofpbuf *payload, bool loose,
4570 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4572 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4573 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4575 while (payload->size > 0) {
4576 const struct mf_field *field;
4580 error = nx_pull_header(payload, &field, &hasmask);
4582 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4583 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4589 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4590 return OFPERR_OFPBMC_BAD_MASK;
4594 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4595 return OFPERR_OFPBMC_BAD_MASK;
4600 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4601 * ofputil_table_features in 'tf'.
4603 * If 'loose' is true, this function ignores properties and values that it does
4604 * not understand, as a controller would want to do when interpreting
4605 * capabilities provided by a switch. If 'loose' is false, this function
4606 * treats unknown properties and values as an error, as a switch would want to
4607 * do when interpreting a configuration request made by a controller.
4609 * A single OpenFlow message can specify features for multiple tables. Calling
4610 * this function multiple times for a single 'msg' iterates through the tables
4611 * in the message. The caller must initially leave 'msg''s layer pointers null
4612 * and not modify them between calls.
4614 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4615 * a positive "enum ofperr" value. */
4617 ofputil_decode_table_features(struct ofpbuf *msg,
4618 struct ofputil_table_features *tf, bool loose)
4620 const struct ofp_header *oh;
4621 struct ofp13_table_features *otf;
4622 struct ofpbuf properties;
4625 memset(tf, 0, sizeof *tf);
4628 ofpraw_pull_assert(msg);
4636 if (msg->size < sizeof *otf) {
4637 return OFPERR_OFPBPC_BAD_LEN;
4641 len = ntohs(otf->length);
4642 if (len < sizeof *otf || len % 8 || len > msg->size) {
4643 return OFPERR_OFPBPC_BAD_LEN;
4645 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4646 ofpbuf_pull(&properties, sizeof *otf);
4648 tf->table_id = otf->table_id;
4649 if (tf->table_id == OFPTT_ALL) {
4650 return OFPERR_OFPTFFC_BAD_TABLE;
4653 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4654 tf->metadata_match = otf->metadata_match;
4655 tf->metadata_write = otf->metadata_write;
4656 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4657 if (oh->version >= OFP14_VERSION) {
4658 uint32_t caps = ntohl(otf->capabilities);
4659 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4660 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4662 tf->supports_eviction = -1;
4663 tf->supports_vacancy_events = -1;
4665 tf->max_entries = ntohl(otf->max_entries);
4667 while (properties.size > 0) {
4668 struct ofpbuf payload;
4672 error = pull_table_feature_property(&properties, &payload, &type);
4677 switch ((enum ofp13_table_feature_prop_type) type) {
4678 case OFPTFPT13_INSTRUCTIONS:
4679 error = parse_instruction_ids(&payload, loose,
4680 &tf->nonmiss.instructions);
4682 case OFPTFPT13_INSTRUCTIONS_MISS:
4683 error = parse_instruction_ids(&payload, loose,
4684 &tf->miss.instructions);
4687 case OFPTFPT13_NEXT_TABLES:
4688 error = parse_table_features_next_table(&payload,
4691 case OFPTFPT13_NEXT_TABLES_MISS:
4692 error = parse_table_features_next_table(&payload, tf->miss.next);
4695 case OFPTFPT13_WRITE_ACTIONS:
4696 error = parse_action_bitmap(&payload, oh->version,
4697 &tf->nonmiss.write.ofpacts);
4699 case OFPTFPT13_WRITE_ACTIONS_MISS:
4700 error = parse_action_bitmap(&payload, oh->version,
4701 &tf->miss.write.ofpacts);
4704 case OFPTFPT13_APPLY_ACTIONS:
4705 error = parse_action_bitmap(&payload, oh->version,
4706 &tf->nonmiss.apply.ofpacts);
4708 case OFPTFPT13_APPLY_ACTIONS_MISS:
4709 error = parse_action_bitmap(&payload, oh->version,
4710 &tf->miss.apply.ofpacts);
4713 case OFPTFPT13_MATCH:
4714 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4716 case OFPTFPT13_WILDCARDS:
4717 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4720 case OFPTFPT13_WRITE_SETFIELD:
4721 error = parse_oxms(&payload, loose,
4722 &tf->nonmiss.write.set_fields, NULL);
4724 case OFPTFPT13_WRITE_SETFIELD_MISS:
4725 error = parse_oxms(&payload, loose,
4726 &tf->miss.write.set_fields, NULL);
4728 case OFPTFPT13_APPLY_SETFIELD:
4729 error = parse_oxms(&payload, loose,
4730 &tf->nonmiss.apply.set_fields, NULL);
4732 case OFPTFPT13_APPLY_SETFIELD_MISS:
4733 error = parse_oxms(&payload, loose,
4734 &tf->miss.apply.set_fields, NULL);
4737 case OFPTFPT13_EXPERIMENTER:
4738 case OFPTFPT13_EXPERIMENTER_MISS:
4740 error = OFPPROP_UNKNOWN(loose, "table features", type);
4748 /* Fix inconsistencies:
4750 * - Turn on 'match' bits that are set in 'mask', because maskable
4751 * fields are matchable.
4753 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4754 * that is arbitrarily maskable can be wildcarded entirely.
4756 * - Turn off 'wildcard' bits that are not in 'match', because a field
4757 * must be matchable for it to be meaningfully wildcarded. */
4758 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4759 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4760 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4765 /* Encodes and returns a request to obtain the table features of a switch.
4766 * The message is encoded for OpenFlow version 'ofp_version'. */
4768 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4770 struct ofpbuf *request = NULL;
4772 switch (ofp_version) {
4776 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4777 "(\'-O OpenFlow13\')");
4781 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4792 put_fields_property(struct ofpbuf *reply,
4793 const struct mf_bitmap *fields,
4794 const struct mf_bitmap *masks,
4795 enum ofp13_table_feature_prop_type property,
4796 enum ofp_version version)
4801 start_ofs = ofpprop_start(reply, property);
4802 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4803 nx_put_header(reply, field, version,
4804 masks && bitmap_is_set(masks->bm, field));
4806 ofpprop_end(reply, start_ofs);
4810 put_table_action_features(struct ofpbuf *reply,
4811 const struct ofputil_table_action_features *taf,
4812 enum ofp13_table_feature_prop_type actions_type,
4813 enum ofp13_table_feature_prop_type set_fields_type,
4814 int miss_offset, enum ofp_version version)
4816 ofpprop_put_bitmap(reply, actions_type + miss_offset,
4817 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4819 put_fields_property(reply, &taf->set_fields, NULL,
4820 set_fields_type + miss_offset, version);
4824 put_table_instruction_features(
4825 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4826 int miss_offset, enum ofp_version version)
4831 ofpprop_put_bitmap(reply, OFPTFPT13_INSTRUCTIONS + miss_offset,
4832 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4835 start_ofs = ofpprop_start(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4836 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4837 ofpbuf_put(reply, &table_id, 1);
4839 ofpprop_end(reply, start_ofs);
4841 put_table_action_features(reply, &tif->write,
4842 OFPTFPT13_WRITE_ACTIONS,
4843 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4844 put_table_action_features(reply, &tif->apply,
4845 OFPTFPT13_APPLY_ACTIONS,
4846 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4850 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4851 struct ovs_list *replies)
4853 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4854 enum ofp_version version = ofpmp_version(replies);
4855 size_t start_ofs = reply->size;
4856 struct ofp13_table_features *otf;
4858 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4859 otf->table_id = tf->table_id;
4860 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4861 otf->metadata_match = tf->metadata_match;
4862 otf->metadata_write = tf->metadata_write;
4863 if (version >= OFP14_VERSION) {
4864 if (tf->supports_eviction) {
4865 otf->capabilities |= htonl(OFPTC14_EVICTION);
4867 if (tf->supports_vacancy_events) {
4868 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4871 otf->max_entries = htonl(tf->max_entries);
4873 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4874 put_table_instruction_features(reply, &tf->miss, 1, version);
4876 put_fields_property(reply, &tf->match, &tf->mask,
4877 OFPTFPT13_MATCH, version);
4878 put_fields_property(reply, &tf->wildcard, NULL,
4879 OFPTFPT13_WILDCARDS, version);
4881 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4882 otf->length = htons(reply->size - start_ofs);
4883 ofpmp_postappend(replies, start_ofs);
4887 parse_table_desc_vacancy_property(struct ofpbuf *property,
4888 struct ofputil_table_desc *td)
4890 struct ofp14_table_mod_prop_vacancy *otv = property->data;
4892 if (property->size != sizeof *otv) {
4893 return OFPERR_OFPBPC_BAD_LEN;
4896 td->table_vacancy.vacancy_down = otv->vacancy_down;
4897 td->table_vacancy.vacancy_up = otv->vacancy_up;
4898 td->table_vacancy.vacancy = otv->vacancy;
4902 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
4903 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
4904 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
4907 ofputil_decode_table_desc(struct ofpbuf *msg,
4908 struct ofputil_table_desc *td,
4909 enum ofp_version version)
4911 struct ofp14_table_desc *otd;
4912 struct ofpbuf properties;
4915 memset(td, 0, sizeof *td);
4918 ofpraw_pull_assert(msg);
4925 otd = ofpbuf_try_pull(msg, sizeof *otd);
4927 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
4928 "leftover bytes at end", msg->size);
4929 return OFPERR_OFPBRC_BAD_LEN;
4932 td->table_id = otd->table_id;
4933 length = ntohs(otd->length);
4934 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
4935 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
4936 "length %"PRIuSIZE, length);
4937 return OFPERR_OFPBRC_BAD_LEN;
4939 length -= sizeof *otd;
4940 ofpbuf_use_const(&properties, ofpbuf_pull(msg, length), length);
4942 td->eviction = ofputil_decode_table_eviction(otd->config, version);
4943 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
4944 td->eviction_flags = UINT32_MAX;
4946 while (properties.size > 0) {
4947 struct ofpbuf payload;
4951 error = ofpprop_pull(&properties, &payload, &type);
4957 case OFPTMPT14_EVICTION:
4958 error = ofpprop_parse_u32(&payload, &td->eviction_flags);
4961 case OFPTMPT14_VACANCY:
4962 error = parse_table_desc_vacancy_property(&payload, td);
4966 error = OFPPROP_UNKNOWN(true, "table_desc", type);
4978 /* Encodes and returns a request to obtain description of tables of a switch.
4979 * The message is encoded for OpenFlow version 'ofp_version'. */
4981 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
4983 struct ofpbuf *request = NULL;
4985 if (ofp_version >= OFP14_VERSION) {
4986 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
4989 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
4990 "(\'-O OpenFlow14\')");
4996 /* Function to append Table desc information in a reply list. */
4998 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
4999 struct ovs_list *replies,
5000 enum ofp_version version)
5002 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5004 struct ofp14_table_desc *otd;
5006 start_otd = reply->size;
5007 ofpbuf_put_zeros(reply, sizeof *otd);
5008 if (td->eviction_flags != UINT32_MAX) {
5009 ofpprop_put_u32(reply, OFPTMPT14_EVICTION, td->eviction_flags);
5011 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5012 struct ofp14_table_mod_prop_vacancy *otv;
5014 otv = ofpprop_put_zeros(reply, OFPTMPT14_VACANCY, sizeof *otv);
5015 otv->vacancy_down = td->table_vacancy.vacancy_down;
5016 otv->vacancy_up = td->table_vacancy.vacancy_up;
5017 otv->vacancy = td->table_vacancy.vacancy;
5020 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5021 otd->length = htons(reply->size - start_otd);
5022 otd->table_id = td->table_id;
5023 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5024 td->eviction, td->vacancy,
5026 ofpmp_postappend(replies, start_otd);
5029 /* This function parses Vacancy property, and decodes the
5030 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5031 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5032 * greater than vacancy_up and also when current vacancy has non-zero
5033 * value. Returns 0 on success. */
5035 parse_table_mod_vacancy_property(struct ofpbuf *property,
5036 struct ofputil_table_mod *tm)
5038 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5040 if (property->size != sizeof *otv) {
5041 return OFPERR_OFPBPC_BAD_LEN;
5043 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5044 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5045 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5046 OFPPROP_LOG(&bad_ofmsg_rl, false,
5047 "Value of vacancy_down is greater than vacancy_up");
5048 return OFPERR_OFPBPC_BAD_VALUE;
5050 if (tm->table_vacancy.vacancy_down > 100 ||
5051 tm->table_vacancy.vacancy_up > 100) {
5052 OFPPROP_LOG(&bad_ofmsg_rl, false, "Vacancy threshold percentage "
5053 "should not be greater than 100");
5054 return OFPERR_OFPBPC_BAD_VALUE;
5056 tm->table_vacancy.vacancy = otv->vacancy;
5057 if (tm->table_vacancy.vacancy) {
5058 OFPPROP_LOG(&bad_ofmsg_rl, false,
5059 "Vacancy value should be zero for table-mod messages");
5060 return OFPERR_OFPBPC_BAD_VALUE;
5065 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5066 * table configuration (a table mod, table stats, or table features message),
5067 * returns the table vacancy configuration that it specifies.
5069 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5070 * so for other 'version' this function always returns
5071 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5072 static enum ofputil_table_vacancy
5073 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5075 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5076 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5077 : OFPUTIL_TABLE_VACANCY_OFF);
5080 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5081 * table configuration (a table mod, table stats, or table features message),
5082 * returns the table eviction configuration that it specifies.
5084 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5085 * so for other 'version' values this function always returns
5086 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5087 static enum ofputil_table_eviction
5088 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5090 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5091 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5092 : OFPUTIL_TABLE_EVICTION_OFF);
5095 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5096 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5097 * 'eviction' values. */
5099 ofputil_encode_table_config(enum ofputil_table_miss miss,
5100 enum ofputil_table_eviction eviction,
5101 enum ofputil_table_vacancy vacancy,
5102 enum ofp_version version)
5104 uint32_t config = 0;
5105 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5106 * information on the crazy evolution of this field. */
5109 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5114 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5116 case OFPUTIL_TABLE_MISS_DEFAULT:
5117 /* Really this shouldn't be used for encoding (the caller should
5118 * provide a specific value) but I can't imagine that defaulting to
5119 * the fall-through case here will hurt. */
5120 case OFPUTIL_TABLE_MISS_CONTROLLER:
5122 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5123 case OFPUTIL_TABLE_MISS_CONTINUE:
5124 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5125 case OFPUTIL_TABLE_MISS_DROP:
5126 return htonl(OFPTC11_TABLE_MISS_DROP);
5131 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5132 * flags, so this is correct. */
5137 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5138 * OFPTC14_VACANCY_EVENTS. */
5139 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5140 config |= OFPTC14_EVICTION;
5142 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5143 config |= OFPTC14_VACANCY_EVENTS;
5145 return htonl(config);
5151 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5152 * table configuration (a table mod, table stats, or table features message),
5153 * returns the table miss configuration that it specifies.
5155 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5156 * other 'version' values this function always returns
5157 * OFPUTIL_TABLE_MISS_DEFAULT. */
5158 static enum ofputil_table_miss
5159 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5161 uint32_t config = ntohl(config_);
5163 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5164 switch (config & OFPTC11_TABLE_MISS_MASK) {
5165 case OFPTC11_TABLE_MISS_CONTROLLER:
5166 return OFPUTIL_TABLE_MISS_CONTROLLER;
5168 case OFPTC11_TABLE_MISS_CONTINUE:
5169 return OFPUTIL_TABLE_MISS_CONTINUE;
5171 case OFPTC11_TABLE_MISS_DROP:
5172 return OFPUTIL_TABLE_MISS_DROP;
5175 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5176 return OFPUTIL_TABLE_MISS_CONTROLLER;
5179 return OFPUTIL_TABLE_MISS_DEFAULT;
5183 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5184 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5186 ofputil_decode_table_mod(const struct ofp_header *oh,
5187 struct ofputil_table_mod *pm)
5192 memset(pm, 0, sizeof *pm);
5193 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5194 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5195 pm->eviction_flags = UINT32_MAX;
5196 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5197 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5198 raw = ofpraw_pull_assert(&b);
5200 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5201 const struct ofp11_table_mod *otm = b.data;
5203 pm->table_id = otm->table_id;
5204 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5205 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5206 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5208 pm->table_id = otm->table_id;
5209 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5210 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5211 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5212 while (b.size > 0) {
5213 struct ofpbuf property;
5217 error = ofpprop_pull(&b, &property, &type);
5223 case OFPTMPT14_EVICTION:
5224 error = ofpprop_parse_u32(&property, &pm->eviction);
5227 case OFPTMPT14_VACANCY:
5228 error = parse_table_mod_vacancy_property(&property, pm);
5232 error = OFPERR_OFPBRC_BAD_TYPE;
5241 return OFPERR_OFPBRC_BAD_TYPE;
5247 /* Converts the abstract form of a "table mod" message in '*tm' into an
5248 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5249 * buffer owned by the caller. */
5251 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5252 enum ofputil_protocol protocol)
5254 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5257 switch (ofp_version) {
5258 case OFP10_VERSION: {
5259 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5260 "(\'-O OpenFlow11\')");
5265 case OFP13_VERSION: {
5266 struct ofp11_table_mod *otm;
5268 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5269 otm = ofpbuf_put_zeros(b, sizeof *otm);
5270 otm->table_id = tm->table_id;
5271 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5272 tm->vacancy, ofp_version);
5276 case OFP15_VERSION: {
5277 struct ofp14_table_mod *otm;
5279 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5280 otm = ofpbuf_put_zeros(b, sizeof *otm);
5281 otm->table_id = tm->table_id;
5282 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5283 tm->vacancy, ofp_version);
5285 if (tm->eviction_flags != UINT32_MAX) {
5286 ofpprop_put_u32(b, OFPTMPT14_EVICTION, tm->eviction_flags);
5288 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5289 struct ofp14_table_mod_prop_vacancy *otv;
5291 otv = ofpprop_put_zeros(b, OFPTMPT14_VACANCY, sizeof *otv);
5292 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5293 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5304 /* ofputil_role_request */
5306 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5307 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5308 * OFPERR_* value. */
5310 ofputil_decode_role_message(const struct ofp_header *oh,
5311 struct ofputil_role_request *rr)
5316 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5317 raw = ofpraw_pull_assert(&b);
5319 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5320 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5321 const struct ofp12_role_request *orr = b.msg;
5323 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5324 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5325 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5326 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5327 return OFPERR_OFPRRFC_BAD_ROLE;
5330 rr->role = ntohl(orr->role);
5331 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5332 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5333 : orr->generation_id == OVS_BE64_MAX) {
5334 rr->have_generation_id = false;
5335 rr->generation_id = 0;
5337 rr->have_generation_id = true;
5338 rr->generation_id = ntohll(orr->generation_id);
5340 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5341 raw == OFPRAW_NXT_ROLE_REPLY) {
5342 const struct nx_role_request *nrr = b.msg;
5344 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5345 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5346 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5348 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5349 nrr->role != htonl(NX_ROLE_MASTER) &&
5350 nrr->role != htonl(NX_ROLE_SLAVE)) {
5351 return OFPERR_OFPRRFC_BAD_ROLE;
5354 rr->role = ntohl(nrr->role) + 1;
5355 rr->have_generation_id = false;
5356 rr->generation_id = 0;
5364 /* Returns an encoded form of a role reply suitable for the "request" in a
5365 * buffer owned by the caller. */
5367 ofputil_encode_role_reply(const struct ofp_header *request,
5368 const struct ofputil_role_request *rr)
5373 raw = ofpraw_decode_assert(request);
5374 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5375 struct ofp12_role_request *orr;
5377 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5378 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5380 orr->role = htonl(rr->role);
5381 orr->generation_id = htonll(rr->have_generation_id
5384 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5385 struct nx_role_request *nrr;
5387 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5388 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5389 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5391 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5392 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5393 nrr->role = htonl(rr->role - 1);
5401 /* Encodes "role status" message 'status' for sending in the given
5402 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5403 * otherwise a null pointer. */
5405 ofputil_encode_role_status(const struct ofputil_role_status *status,
5406 enum ofputil_protocol protocol)
5408 enum ofp_version version;
5410 version = ofputil_protocol_to_ofp_version(protocol);
5411 if (version >= OFP14_VERSION) {
5412 struct ofp14_role_status *rstatus;
5415 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5417 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5418 rstatus->role = htonl(status->role);
5419 rstatus->reason = status->reason;
5420 rstatus->generation_id = htonll(status->generation_id);
5429 ofputil_decode_role_status(const struct ofp_header *oh,
5430 struct ofputil_role_status *rs)
5434 const struct ofp14_role_status *r;
5436 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5437 raw = ofpraw_pull_assert(&b);
5438 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5441 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5442 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5443 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5444 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5445 return OFPERR_OFPRRFC_BAD_ROLE;
5448 rs->role = ntohl(r->role);
5449 rs->generation_id = ntohll(r->generation_id);
5450 rs->reason = r->reason;
5455 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5456 * 'protocol' must be for OpenFlow 1.4 or later. */
5458 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5459 enum ofputil_protocol protocol)
5461 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5462 struct ofpbuf *inner;
5464 switch (rf->reason) {
5465 case OFPRFR_GROUP_MOD:
5466 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5469 case OFPRFR_METER_MOD:
5470 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5473 case OFPRFR_N_REASONS:
5478 struct ofp_header *inner_oh = inner->data;
5479 inner_oh->xid = rf->xid;
5480 inner_oh->length = htons(inner->size);
5482 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5483 ofp_version, htonl(0),
5485 ofpbuf_put(outer, inner->data, inner->size);
5486 ofpbuf_delete(inner);
5491 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5492 * form into '*rf' and returns 0, and the caller is later responsible for
5493 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5494 * failure, returns an ofperr and '*rf' is indeterminate. */
5496 ofputil_decode_requestforward(const struct ofp_header *outer,
5497 struct ofputil_requestforward *rf)
5502 ofpbuf_use_const(&b, outer, ntohs(outer->length));
5504 /* Skip past outer message. */
5505 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5506 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5508 /* Validate inner message. */
5509 if (b.size < sizeof(struct ofp_header)) {
5510 return OFPERR_OFPBFC_MSG_BAD_LEN;
5512 const struct ofp_header *inner = b.data;
5513 unsigned int inner_len = ntohs(inner->length);
5514 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5515 return OFPERR_OFPBFC_MSG_BAD_LEN;
5517 if (inner->version != outer->version) {
5518 return OFPERR_OFPBRC_BAD_VERSION;
5521 /* Parse inner message. */
5523 error = ofptype_decode(&type, inner);
5528 rf->xid = inner->xid;
5529 if (type == OFPTYPE_GROUP_MOD) {
5530 rf->reason = OFPRFR_GROUP_MOD;
5531 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5532 error = ofputil_decode_group_mod(inner, rf->group_mod);
5534 free(rf->group_mod);
5537 } else if (type == OFPTYPE_METER_MOD) {
5538 rf->reason = OFPRFR_METER_MOD;
5539 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5540 ofpbuf_init(&rf->bands, 64);
5541 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5543 free(rf->meter_mod);
5544 ofpbuf_uninit(&rf->bands);
5548 return OFPERR_OFPBFC_MSG_UNSUP;
5554 /* Frees the content of 'rf', which should have been initialized through a
5555 * successful call to ofputil_decode_requestforward(). */
5557 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5563 switch (rf->reason) {
5564 case OFPRFR_GROUP_MOD:
5565 ofputil_uninit_group_mod(rf->group_mod);
5566 free(rf->group_mod);
5569 case OFPRFR_METER_MOD:
5570 ofpbuf_uninit(&rf->bands);
5571 free(rf->meter_mod);
5574 case OFPRFR_N_REASONS:
5581 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5582 * matched and a field that must be wildcarded. This function returns a bitmap
5583 * that contains both kinds of fields. */
5584 static struct mf_bitmap
5585 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5587 struct mf_bitmap wc = features->match;
5588 bitmap_not(wc.bm, MFF_N_IDS);
5589 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5593 struct ofp10_wc_map {
5594 enum ofp10_flow_wildcards wc10;
5595 enum mf_field_id mf;
5598 static const struct ofp10_wc_map ofp10_wc_map[] = {
5599 { OFPFW10_IN_PORT, MFF_IN_PORT },
5600 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5601 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5602 { OFPFW10_DL_DST, MFF_ETH_DST},
5603 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5604 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5605 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5606 { OFPFW10_TP_DST, MFF_TCP_DST },
5607 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5608 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5609 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5610 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5614 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5616 const struct ofp10_wc_map *p;
5619 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5620 if (bitmap_is_set(fields->bm, p->mf)) {
5627 static struct mf_bitmap
5628 mf_bitmap_from_of10(ovs_be32 wc10_)
5630 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5631 const struct ofp10_wc_map *p;
5632 uint32_t wc10 = ntohl(wc10_);
5634 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5635 if (wc10 & p->wc10) {
5636 bitmap_set1(fields.bm, p->mf);
5643 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5644 const struct ofputil_table_features *features,
5647 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5648 struct ofp10_table_stats *out;
5650 out = ofpbuf_put_zeros(buf, sizeof *out);
5651 out->table_id = features->table_id;
5652 ovs_strlcpy(out->name, features->name, sizeof out->name);
5653 out->wildcards = mf_bitmap_to_of10(&wc);
5654 out->max_entries = htonl(features->max_entries);
5655 out->active_count = htonl(stats->active_count);
5656 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5657 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5660 struct ofp11_wc_map {
5661 enum ofp11_flow_match_fields wc11;
5662 enum mf_field_id mf;
5665 static const struct ofp11_wc_map ofp11_wc_map[] = {
5666 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5667 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5668 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5669 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5670 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5671 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5672 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5673 { OFPFMF11_TP_DST, MFF_TCP_DST },
5674 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5675 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5676 /* I don't know what OFPFMF11_TYPE means. */
5677 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5678 { OFPFMF11_DL_DST, MFF_ETH_DST },
5679 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5680 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5681 { OFPFMF11_METADATA, MFF_METADATA },
5685 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5687 const struct ofp11_wc_map *p;
5690 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5691 if (bitmap_is_set(fields->bm, p->mf)) {
5698 static struct mf_bitmap
5699 mf_bitmap_from_of11(ovs_be32 wc11_)
5701 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5702 const struct ofp11_wc_map *p;
5703 uint32_t wc11 = ntohl(wc11_);
5705 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5706 if (wc11 & p->wc11) {
5707 bitmap_set1(fields.bm, p->mf);
5714 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5715 const struct ofputil_table_features *features,
5718 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5719 struct ofp11_table_stats *out;
5721 out = ofpbuf_put_zeros(buf, sizeof *out);
5722 out->table_id = features->table_id;
5723 ovs_strlcpy(out->name, features->name, sizeof out->name);
5724 out->wildcards = mf_bitmap_to_of11(&wc);
5725 out->match = mf_bitmap_to_of11(&features->match);
5726 out->instructions = ovsinst_bitmap_to_openflow(
5727 features->nonmiss.instructions, OFP11_VERSION);
5728 out->write_actions = ofpact_bitmap_to_openflow(
5729 features->nonmiss.write.ofpacts, OFP11_VERSION);
5730 out->apply_actions = ofpact_bitmap_to_openflow(
5731 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5732 out->config = htonl(features->miss_config);
5733 out->max_entries = htonl(features->max_entries);
5734 out->active_count = htonl(stats->active_count);
5735 out->lookup_count = htonll(stats->lookup_count);
5736 out->matched_count = htonll(stats->matched_count);
5740 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5741 const struct ofputil_table_features *features,
5744 struct ofp12_table_stats *out;
5746 out = ofpbuf_put_zeros(buf, sizeof *out);
5747 out->table_id = features->table_id;
5748 ovs_strlcpy(out->name, features->name, sizeof out->name);
5749 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5750 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5752 out->write_actions = ofpact_bitmap_to_openflow(
5753 features->nonmiss.write.ofpacts, OFP12_VERSION);
5754 out->apply_actions = ofpact_bitmap_to_openflow(
5755 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5756 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5757 &features->nonmiss.write.set_fields, OFP12_VERSION);
5758 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5759 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5760 out->metadata_match = features->metadata_match;
5761 out->metadata_write = features->metadata_write;
5762 out->instructions = ovsinst_bitmap_to_openflow(
5763 features->nonmiss.instructions, OFP12_VERSION);
5764 out->config = ofputil_encode_table_config(features->miss_config,
5765 OFPUTIL_TABLE_EVICTION_DEFAULT,
5766 OFPUTIL_TABLE_VACANCY_DEFAULT,
5768 out->max_entries = htonl(features->max_entries);
5769 out->active_count = htonl(stats->active_count);
5770 out->lookup_count = htonll(stats->lookup_count);
5771 out->matched_count = htonll(stats->matched_count);
5775 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5778 struct ofp13_table_stats *out;
5780 out = ofpbuf_put_zeros(buf, sizeof *out);
5781 out->table_id = stats->table_id;
5782 out->active_count = htonl(stats->active_count);
5783 out->lookup_count = htonll(stats->lookup_count);
5784 out->matched_count = htonll(stats->matched_count);
5788 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5790 return ofpraw_alloc_stats_reply(request, 0);
5794 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5795 const struct ofputil_table_stats *stats,
5796 const struct ofputil_table_features *features)
5798 struct ofp_header *oh = reply->header;
5800 ovs_assert(stats->table_id == features->table_id);
5802 switch ((enum ofp_version) oh->version) {
5804 ofputil_put_ofp10_table_stats(stats, features, reply);
5808 ofputil_put_ofp11_table_stats(stats, features, reply);
5812 ofputil_put_ofp12_table_stats(stats, features, reply);
5818 ofputil_put_ofp13_table_stats(stats, reply);
5827 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5828 struct ofputil_table_stats *stats,
5829 struct ofputil_table_features *features)
5831 struct ofp10_table_stats *ots;
5833 ots = ofpbuf_try_pull(msg, sizeof *ots);
5835 return OFPERR_OFPBRC_BAD_LEN;
5838 features->table_id = ots->table_id;
5839 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5840 features->max_entries = ntohl(ots->max_entries);
5841 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5843 stats->table_id = ots->table_id;
5844 stats->active_count = ntohl(ots->active_count);
5845 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5846 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5852 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5853 struct ofputil_table_stats *stats,
5854 struct ofputil_table_features *features)
5856 struct ofp11_table_stats *ots;
5858 ots = ofpbuf_try_pull(msg, sizeof *ots);
5860 return OFPERR_OFPBRC_BAD_LEN;
5863 features->table_id = ots->table_id;
5864 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5865 features->max_entries = ntohl(ots->max_entries);
5866 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5867 ots->instructions, OFP11_VERSION);
5868 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5869 ots->write_actions, OFP11_VERSION);
5870 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5871 ots->write_actions, OFP11_VERSION);
5872 features->miss = features->nonmiss;
5873 features->miss_config = ofputil_decode_table_miss(ots->config,
5875 features->match = mf_bitmap_from_of11(ots->match);
5876 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5877 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5879 stats->table_id = ots->table_id;
5880 stats->active_count = ntohl(ots->active_count);
5881 stats->lookup_count = ntohll(ots->lookup_count);
5882 stats->matched_count = ntohll(ots->matched_count);
5888 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5889 struct ofputil_table_stats *stats,
5890 struct ofputil_table_features *features)
5892 struct ofp12_table_stats *ots;
5894 ots = ofpbuf_try_pull(msg, sizeof *ots);
5896 return OFPERR_OFPBRC_BAD_LEN;
5899 features->table_id = ots->table_id;
5900 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5901 features->metadata_match = ots->metadata_match;
5902 features->metadata_write = ots->metadata_write;
5903 features->miss_config = ofputil_decode_table_miss(ots->config,
5905 features->max_entries = ntohl(ots->max_entries);
5907 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5908 ots->instructions, OFP12_VERSION);
5909 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5910 ots->write_actions, OFP12_VERSION);
5911 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5912 ots->apply_actions, OFP12_VERSION);
5913 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
5914 ots->write_setfields, OFP12_VERSION);
5915 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
5916 ots->apply_setfields, OFP12_VERSION);
5917 features->miss = features->nonmiss;
5919 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
5920 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
5922 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5924 stats->table_id = ots->table_id;
5925 stats->active_count = ntohl(ots->active_count);
5926 stats->lookup_count = ntohll(ots->lookup_count);
5927 stats->matched_count = ntohll(ots->matched_count);
5933 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
5934 struct ofputil_table_stats *stats,
5935 struct ofputil_table_features *features)
5937 struct ofp13_table_stats *ots;
5939 ots = ofpbuf_try_pull(msg, sizeof *ots);
5941 return OFPERR_OFPBRC_BAD_LEN;
5944 features->table_id = ots->table_id;
5946 stats->table_id = ots->table_id;
5947 stats->active_count = ntohl(ots->active_count);
5948 stats->lookup_count = ntohll(ots->lookup_count);
5949 stats->matched_count = ntohll(ots->matched_count);
5955 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
5956 struct ofputil_table_stats *stats,
5957 struct ofputil_table_features *features)
5959 const struct ofp_header *oh;
5962 ofpraw_pull_assert(msg);
5970 memset(stats, 0, sizeof *stats);
5971 memset(features, 0, sizeof *features);
5972 features->supports_eviction = -1;
5973 features->supports_vacancy_events = -1;
5975 switch ((enum ofp_version) oh->version) {
5977 return ofputil_decode_ofp10_table_stats(msg, stats, features);
5980 return ofputil_decode_ofp11_table_stats(msg, stats, features);
5983 return ofputil_decode_ofp12_table_stats(msg, stats, features);
5988 return ofputil_decode_ofp13_table_stats(msg, stats, features);
5995 /* ofputil_flow_monitor_request */
5997 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
5998 * ofputil_flow_monitor_request in 'rq'.
6000 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6001 * message. Calling this function multiple times for a single 'msg' iterates
6002 * through the requests. The caller must initially leave 'msg''s layer
6003 * pointers null and not modify them between calls.
6005 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6006 * otherwise an OFPERR_* value. */
6008 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6011 struct nx_flow_monitor_request *nfmr;
6015 ofpraw_pull_assert(msg);
6022 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6024 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6025 "leftover bytes at end", msg->size);
6026 return OFPERR_OFPBRC_BAD_LEN;
6029 flags = ntohs(nfmr->flags);
6030 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6031 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6032 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6033 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6035 return OFPERR_OFPMOFC_BAD_FLAGS;
6038 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6039 return OFPERR_NXBRC_MUST_BE_ZERO;
6042 rq->id = ntohl(nfmr->id);
6044 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6045 rq->table_id = nfmr->table_id;
6047 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6051 ofputil_append_flow_monitor_request(
6052 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6054 struct nx_flow_monitor_request *nfmr;
6059 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6062 start_ofs = msg->size;
6063 ofpbuf_put_zeros(msg, sizeof *nfmr);
6064 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6066 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6067 nfmr->id = htonl(rq->id);
6068 nfmr->flags = htons(rq->flags);
6069 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6070 nfmr->match_len = htons(match_len);
6071 nfmr->table_id = rq->table_id;
6074 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6075 * into an abstract ofputil_flow_update in 'update'. The caller must have
6076 * initialized update->match to point to space allocated for a match.
6078 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6079 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6080 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6081 * will point into the 'ofpacts' buffer.
6083 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6084 * this function multiple times for a single 'msg' iterates through the
6085 * updates. The caller must initially leave 'msg''s layer pointers null and
6086 * not modify them between calls.
6088 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6089 * otherwise an OFPERR_* value. */
6091 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6092 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6094 struct nx_flow_update_header *nfuh;
6095 unsigned int length;
6096 struct ofp_header *oh;
6099 ofpraw_pull_assert(msg);
6102 ofpbuf_clear(ofpacts);
6107 if (msg->size < sizeof(struct nx_flow_update_header)) {
6114 update->event = ntohs(nfuh->event);
6115 length = ntohs(nfuh->length);
6116 if (length > msg->size || length % 8) {
6120 if (update->event == NXFME_ABBREV) {
6121 struct nx_flow_update_abbrev *nfua;
6123 if (length != sizeof *nfua) {
6127 nfua = ofpbuf_pull(msg, sizeof *nfua);
6128 update->xid = nfua->xid;
6130 } else if (update->event == NXFME_ADDED
6131 || update->event == NXFME_DELETED
6132 || update->event == NXFME_MODIFIED) {
6133 struct nx_flow_update_full *nfuf;
6134 unsigned int actions_len;
6135 unsigned int match_len;
6138 if (length < sizeof *nfuf) {
6142 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6143 match_len = ntohs(nfuf->match_len);
6144 if (sizeof *nfuf + match_len > length) {
6148 update->reason = ntohs(nfuf->reason);
6149 update->idle_timeout = ntohs(nfuf->idle_timeout);
6150 update->hard_timeout = ntohs(nfuf->hard_timeout);
6151 update->table_id = nfuf->table_id;
6152 update->cookie = nfuf->cookie;
6153 update->priority = ntohs(nfuf->priority);
6155 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6160 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6161 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6167 update->ofpacts = ofpacts->data;
6168 update->ofpacts_len = ofpacts->size;
6171 VLOG_WARN_RL(&bad_ofmsg_rl,
6172 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6173 ntohs(nfuh->event));
6174 return OFPERR_NXBRC_FM_BAD_EVENT;
6178 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6179 "leftover bytes at end", msg->size);
6180 return OFPERR_OFPBRC_BAD_LEN;
6184 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6186 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6188 return ntohl(cancel->id);
6192 ofputil_encode_flow_monitor_cancel(uint32_t id)
6194 struct nx_flow_monitor_cancel *nfmc;
6197 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6198 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6199 nfmc->id = htonl(id);
6204 ofputil_start_flow_update(struct ovs_list *replies)
6208 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6212 list_push_back(replies, &msg->list_node);
6216 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6217 struct ovs_list *replies)
6219 enum ofp_version version = ofpmp_version(replies);
6220 struct nx_flow_update_header *nfuh;
6224 msg = ofpbuf_from_list(list_back(replies));
6225 start_ofs = msg->size;
6227 if (update->event == NXFME_ABBREV) {
6228 struct nx_flow_update_abbrev *nfua;
6230 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6231 nfua->xid = update->xid;
6233 struct nx_flow_update_full *nfuf;
6236 ofpbuf_put_zeros(msg, sizeof *nfuf);
6237 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6238 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6240 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6241 nfuf->reason = htons(update->reason);
6242 nfuf->priority = htons(update->priority);
6243 nfuf->idle_timeout = htons(update->idle_timeout);
6244 nfuf->hard_timeout = htons(update->hard_timeout);
6245 nfuf->match_len = htons(match_len);
6246 nfuf->table_id = update->table_id;
6247 nfuf->cookie = update->cookie;
6250 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6251 nfuh->length = htons(msg->size - start_ofs);
6252 nfuh->event = htons(update->event);
6254 ofpmp_postappend(replies, start_ofs);
6258 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6259 enum ofputil_protocol protocol)
6261 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6265 size = po->ofpacts_len;
6266 if (po->buffer_id == UINT32_MAX) {
6267 size += po->packet_len;
6270 switch (ofp_version) {
6271 case OFP10_VERSION: {
6272 struct ofp10_packet_out *opo;
6275 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6276 ofpbuf_put_zeros(msg, sizeof *opo);
6277 actions_ofs = msg->size;
6278 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6282 opo->buffer_id = htonl(po->buffer_id);
6283 opo->in_port = htons(ofp_to_u16(po->in_port));
6284 opo->actions_len = htons(msg->size - actions_ofs);
6292 case OFP15_VERSION: {
6293 struct ofp11_packet_out *opo;
6296 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6297 ofpbuf_put_zeros(msg, sizeof *opo);
6298 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6301 opo->buffer_id = htonl(po->buffer_id);
6302 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6303 opo->actions_len = htons(len);
6311 if (po->buffer_id == UINT32_MAX) {
6312 ofpbuf_put(msg, po->packet, po->packet_len);
6315 ofpmsg_update_length(msg);
6320 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6322 make_echo_request(enum ofp_version ofp_version)
6324 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6328 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6329 * OFPT_ECHO_REQUEST message in 'rq'. */
6331 make_echo_reply(const struct ofp_header *rq)
6333 struct ofpbuf rq_buf;
6334 struct ofpbuf *reply;
6336 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6337 ofpraw_pull_assert(&rq_buf);
6339 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
6340 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6345 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6349 switch (ofp_version) {
6355 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6359 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6366 return ofpraw_alloc(type, ofp_version, 0);
6370 ofputil_frag_handling_to_string(enum ofputil_frag_handling frag)
6373 case OFPUTIL_FRAG_NORMAL: return "normal";
6374 case OFPUTIL_FRAG_DROP: return "drop";
6375 case OFPUTIL_FRAG_REASM: return "reassemble";
6376 case OFPUTIL_FRAG_NX_MATCH: return "nx-match";
6383 ofputil_frag_handling_from_string(const char *s,
6384 enum ofputil_frag_handling *frag)
6386 if (!strcasecmp(s, "normal")) {
6387 *frag = OFPUTIL_FRAG_NORMAL;
6388 } else if (!strcasecmp(s, "drop")) {
6389 *frag = OFPUTIL_FRAG_DROP;
6390 } else if (!strcasecmp(s, "reassemble")) {
6391 *frag = OFPUTIL_FRAG_REASM;
6392 } else if (!strcasecmp(s, "nx-match")) {
6393 *frag = OFPUTIL_FRAG_NX_MATCH;
6400 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6401 * port number and stores the latter in '*ofp10_port', for the purpose of
6402 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6403 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6405 * See the definition of OFP11_MAX for an explanation of the mapping. */
6407 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6409 uint32_t ofp11_port_h = ntohl(ofp11_port);
6411 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6412 *ofp10_port = u16_to_ofp(ofp11_port_h);
6414 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6415 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6418 *ofp10_port = OFPP_NONE;
6419 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6420 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6421 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6422 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6423 return OFPERR_OFPBAC_BAD_OUT_PORT;
6427 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6428 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6430 * See the definition of OFP11_MAX for an explanation of the mapping. */
6432 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6434 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6435 ? ofp_to_u16(ofp10_port)
6436 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6439 #define OFPUTIL_NAMED_PORTS \
6440 OFPUTIL_NAMED_PORT(IN_PORT) \
6441 OFPUTIL_NAMED_PORT(TABLE) \
6442 OFPUTIL_NAMED_PORT(NORMAL) \
6443 OFPUTIL_NAMED_PORT(FLOOD) \
6444 OFPUTIL_NAMED_PORT(ALL) \
6445 OFPUTIL_NAMED_PORT(CONTROLLER) \
6446 OFPUTIL_NAMED_PORT(LOCAL) \
6447 OFPUTIL_NAMED_PORT(ANY) \
6448 OFPUTIL_NAMED_PORT(UNSET)
6450 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6451 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6452 OFPUTIL_NAMED_PORTS \
6453 OFPUTIL_NAMED_PORT(NONE)
6455 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6456 * integer or, for reserved ports, the standard OpenFlow name for the port
6459 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6460 * or name. The caller should issue an error message in this case, because
6461 * this function usually does not. (This gives the caller an opportunity to
6462 * look up the port name another way, e.g. by contacting the switch and listing
6463 * the names of all its ports).
6465 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6466 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6467 * range as described in include/openflow/openflow-1.1.h. */
6469 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6471 unsigned int port32; /* int is at least 32 bits wide. */
6474 VLOG_WARN("Negative value %s is not a valid port number.", s);
6478 if (str_to_uint(s, 10, &port32)) {
6479 if (port32 < ofp_to_u16(OFPP_MAX)) {
6481 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6482 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6483 "be translated to %u when talking to an OF1.1 or "
6484 "later controller", port32, port32 + OFPP11_OFFSET);
6485 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6486 char name[OFP_MAX_PORT_NAME_LEN];
6488 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6489 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6490 "for compatibility with OpenFlow 1.1 and later",
6492 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6493 VLOG_WARN("port %u is outside the supported range 0 through "
6494 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6495 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6498 port32 -= OFPP11_OFFSET;
6501 *portp = u16_to_ofp(port32);
6508 static const struct pair pairs[] = {
6509 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6510 OFPUTIL_NAMED_PORTS_WITH_NONE
6511 #undef OFPUTIL_NAMED_PORT
6513 const struct pair *p;
6515 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6516 if (!strcasecmp(s, p->name)) {
6525 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6526 * Most ports' string representation is just the port number, but for special
6527 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6529 ofputil_format_port(ofp_port_t port, struct ds *s)
6531 char name[OFP_MAX_PORT_NAME_LEN];
6533 ofputil_port_to_string(port, name, sizeof name);
6534 ds_put_cstr(s, name);
6537 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6538 * representation of OpenFlow port number 'port'. Most ports are represented
6539 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6540 * by name, e.g. "LOCAL". */
6542 ofputil_port_to_string(ofp_port_t port,
6543 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6546 #define OFPUTIL_NAMED_PORT(NAME) \
6548 ovs_strlcpy(namebuf, #NAME, bufsize); \
6551 #undef OFPUTIL_NAMED_PORT
6554 snprintf(namebuf, bufsize, "%"PRIu16, port);
6559 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6560 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6561 * (either "ANY" or "ALL").
6563 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6566 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6568 if (!strcasecmp(s, "any")) {
6569 *group_idp = OFPG_ANY;
6570 } else if (!strcasecmp(s, "all")) {
6571 *group_idp = OFPG_ALL;
6572 } else if (!str_to_uint(s, 10, group_idp)) {
6573 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6574 "32-bit nonnegative integers or the keywords ANY or "
6582 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6583 * Most groups' string representation is just the number, but for special
6584 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6586 ofputil_format_group(uint32_t group_id, struct ds *s)
6588 char name[MAX_GROUP_NAME_LEN];
6590 ofputil_group_to_string(group_id, name, sizeof name);
6591 ds_put_cstr(s, name);
6595 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6596 * representation of OpenFlow group ID 'group_id'. Most group are represented
6597 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6598 * by name, e.g. "ALL". */
6600 ofputil_group_to_string(uint32_t group_id,
6601 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6605 ovs_strlcpy(namebuf, "ALL", bufsize);
6609 ovs_strlcpy(namebuf, "ANY", bufsize);
6613 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6618 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6619 * 'ofp_version', tries to pull the first element from the array. If
6620 * successful, initializes '*pp' with an abstract representation of the
6621 * port and returns 0. If no ports remain to be decoded, returns EOF.
6622 * On an error, returns a positive OFPERR_* value. */
6624 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6625 struct ofputil_phy_port *pp)
6627 memset(pp, 0, sizeof *pp);
6629 switch (ofp_version) {
6630 case OFP10_VERSION: {
6631 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6632 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6636 case OFP13_VERSION: {
6637 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6638 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6642 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6649 ofputil_normalize_match__(struct match *match, bool may_log)
6652 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6653 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6654 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6655 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6656 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6657 MAY_ARP_THA = 1 << 5, /* arp_tha */
6658 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6659 MAY_ND_TARGET = 1 << 7, /* nd_target */
6660 MAY_MPLS = 1 << 8, /* mpls label and tc */
6663 struct flow_wildcards wc;
6665 /* Figure out what fields may be matched. */
6666 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6667 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6668 if (match->flow.nw_proto == IPPROTO_TCP ||
6669 match->flow.nw_proto == IPPROTO_UDP ||
6670 match->flow.nw_proto == IPPROTO_SCTP ||
6671 match->flow.nw_proto == IPPROTO_ICMP) {
6672 may_match |= MAY_TP_ADDR;
6674 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6675 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6676 if (match->flow.nw_proto == IPPROTO_TCP ||
6677 match->flow.nw_proto == IPPROTO_UDP ||
6678 match->flow.nw_proto == IPPROTO_SCTP) {
6679 may_match |= MAY_TP_ADDR;
6680 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6681 may_match |= MAY_TP_ADDR;
6682 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6683 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6684 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6685 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6688 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6689 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6690 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6691 } else if (eth_type_mpls(match->flow.dl_type)) {
6692 may_match = MAY_MPLS;
6697 /* Clear the fields that may not be matched. */
6699 if (!(may_match & MAY_NW_ADDR)) {
6700 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6702 if (!(may_match & MAY_TP_ADDR)) {
6703 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6705 if (!(may_match & MAY_NW_PROTO)) {
6706 wc.masks.nw_proto = 0;
6708 if (!(may_match & MAY_IPVx)) {
6709 wc.masks.nw_tos = 0;
6710 wc.masks.nw_ttl = 0;
6712 if (!(may_match & MAY_ARP_SHA)) {
6713 WC_UNMASK_FIELD(&wc, arp_sha);
6715 if (!(may_match & MAY_ARP_THA)) {
6716 WC_UNMASK_FIELD(&wc, arp_tha);
6718 if (!(may_match & MAY_IPV6)) {
6719 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6720 wc.masks.ipv6_label = htonl(0);
6722 if (!(may_match & MAY_ND_TARGET)) {
6723 wc.masks.nd_target = in6addr_any;
6725 if (!(may_match & MAY_MPLS)) {
6726 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6729 /* Log any changes. */
6730 if (!flow_wildcards_equal(&wc, &match->wc)) {
6731 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6732 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6735 match_zero_wildcarded_fields(match);
6738 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6739 VLOG_INFO("normalization changed ofp_match, details:");
6740 VLOG_INFO(" pre: %s", pre);
6741 VLOG_INFO("post: %s", post);
6748 /* "Normalizes" the wildcards in 'match'. That means:
6750 * 1. If the type of level N is known, then only the valid fields for that
6751 * level may be specified. For example, ARP does not have a TOS field,
6752 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6753 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6754 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6757 * 2. If the type of level N is not known (or not understood by Open
6758 * vSwitch), then no fields at all for that level may be specified. For
6759 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6760 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6763 * If this function changes 'match', it logs a rate-limited informational
6766 ofputil_normalize_match(struct match *match)
6768 ofputil_normalize_match__(match, true);
6771 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6772 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6773 * sense for use on flows received from elsewhere (so that a bug in the program
6774 * that sent them can be reported and corrected). */
6776 ofputil_normalize_match_quiet(struct match *match)
6778 ofputil_normalize_match__(match, false);
6781 /* Parses a key or a key-value pair from '*stringp'.
6783 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6784 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6785 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6786 * are substrings of '*stringp' created by replacing some of its bytes by null
6787 * terminators. Returns true.
6789 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6790 * NULL and returns false. */
6792 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6794 char *pos, *key, *value;
6798 pos += strspn(pos, ", \t\r\n");
6800 *keyp = *valuep = NULL;
6805 key_len = strcspn(pos, ":=(, \t\r\n");
6806 if (key[key_len] == ':' || key[key_len] == '=') {
6807 /* The value can be separated by a colon. */
6810 value = key + key_len + 1;
6811 value_len = strcspn(value, ", \t\r\n");
6812 pos = value + value_len + (value[value_len] != '\0');
6813 value[value_len] = '\0';
6814 } else if (key[key_len] == '(') {
6815 /* The value can be surrounded by balanced parentheses. The outermost
6816 * set of parentheses is removed. */
6820 value = key + key_len + 1;
6821 for (value_len = 0; level > 0; value_len++) {
6822 switch (value[value_len]) {
6836 value[value_len - 1] = '\0';
6837 pos = value + value_len;
6839 /* There might be no value at all. */
6840 value = key + key_len; /* Will become the empty string below. */
6841 pos = key + key_len + (key[key_len] != '\0');
6843 key[key_len] = '\0';
6851 /* Encode a dump ports request for 'port', the encoded message
6852 * will be for OpenFlow version 'ofp_version'. Returns message
6853 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6855 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6857 struct ofpbuf *request;
6859 switch (ofp_version) {
6860 case OFP10_VERSION: {
6861 struct ofp10_port_stats_request *req;
6862 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6863 req = ofpbuf_put_zeros(request, sizeof *req);
6864 req->port_no = htons(ofp_to_u16(port));
6871 case OFP15_VERSION: {
6872 struct ofp11_port_stats_request *req;
6873 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6874 req = ofpbuf_put_zeros(request, sizeof *req);
6875 req->port_no = ofputil_port_to_ofp11(port);
6886 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6887 struct ofp10_port_stats *ps10)
6889 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6890 memset(ps10->pad, 0, sizeof ps10->pad);
6891 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6892 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6893 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6894 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6895 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6896 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6897 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6898 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6899 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6900 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6901 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6902 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6906 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6907 struct ofp11_port_stats *ps11)
6909 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6910 memset(ps11->pad, 0, sizeof ps11->pad);
6911 ps11->rx_packets = htonll(ops->stats.rx_packets);
6912 ps11->tx_packets = htonll(ops->stats.tx_packets);
6913 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6914 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6915 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6916 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6917 ps11->rx_errors = htonll(ops->stats.rx_errors);
6918 ps11->tx_errors = htonll(ops->stats.tx_errors);
6919 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6920 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
6921 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6922 ps11->collisions = htonll(ops->stats.collisions);
6926 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
6927 struct ofp13_port_stats *ps13)
6929 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
6930 ps13->duration_sec = htonl(ops->duration_sec);
6931 ps13->duration_nsec = htonl(ops->duration_nsec);
6935 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
6936 struct ovs_list *replies)
6938 struct ofp14_port_stats_prop_ethernet *eth;
6939 struct ofp14_port_stats *ps14;
6940 struct ofpbuf *reply;
6942 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
6944 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
6945 ps14->length = htons(sizeof *ps14 + sizeof *eth);
6946 memset(ps14->pad, 0, sizeof ps14->pad);
6947 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
6948 ps14->duration_sec = htonl(ops->duration_sec);
6949 ps14->duration_nsec = htonl(ops->duration_nsec);
6950 ps14->rx_packets = htonll(ops->stats.rx_packets);
6951 ps14->tx_packets = htonll(ops->stats.tx_packets);
6952 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
6953 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
6954 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
6955 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
6956 ps14->rx_errors = htonll(ops->stats.rx_errors);
6957 ps14->tx_errors = htonll(ops->stats.tx_errors);
6959 eth = ofpprop_put_zeros(reply, OFPPSPT14_ETHERNET, sizeof *eth);
6960 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6961 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
6962 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6963 eth->collisions = htonll(ops->stats.collisions);
6966 /* Encode a ports stat for 'ops' and append it to 'replies'. */
6968 ofputil_append_port_stat(struct ovs_list *replies,
6969 const struct ofputil_port_stats *ops)
6971 switch (ofpmp_version(replies)) {
6972 case OFP13_VERSION: {
6973 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6974 ofputil_port_stats_to_ofp13(ops, reply);
6978 case OFP11_VERSION: {
6979 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6980 ofputil_port_stats_to_ofp11(ops, reply);
6984 case OFP10_VERSION: {
6985 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6986 ofputil_port_stats_to_ofp10(ops, reply);
6992 ofputil_append_ofp14_port_stats(ops, replies);
7001 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7002 const struct ofp10_port_stats *ps10)
7004 memset(ops, 0, sizeof *ops);
7006 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7007 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7008 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7009 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7010 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7011 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7012 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7013 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7014 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7015 ops->stats.rx_frame_errors =
7016 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7017 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7018 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7019 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7020 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7026 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7027 const struct ofp11_port_stats *ps11)
7031 memset(ops, 0, sizeof *ops);
7032 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7037 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7038 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7039 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7040 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7041 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7042 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7043 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7044 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7045 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7046 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7047 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7048 ops->stats.collisions = ntohll(ps11->collisions);
7049 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7055 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7056 const struct ofp13_port_stats *ps13)
7058 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7060 ops->duration_sec = ntohl(ps13->duration_sec);
7061 ops->duration_nsec = ntohl(ps13->duration_nsec);
7067 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7068 struct ofputil_port_stats *ops)
7070 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7072 if (payload->size != sizeof *eth) {
7073 return OFPERR_OFPBPC_BAD_LEN;
7076 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7077 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7078 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7079 ops->stats.collisions = ntohll(eth->collisions);
7085 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7088 const struct ofp14_port_stats *ps14;
7089 struct ofpbuf properties;
7093 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7095 return OFPERR_OFPBRC_BAD_LEN;
7098 len = ntohs(ps14->length);
7099 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7100 return OFPERR_OFPBRC_BAD_LEN;
7102 len -= sizeof *ps14;
7103 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
7105 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7110 ops->duration_sec = ntohl(ps14->duration_sec);
7111 ops->duration_nsec = ntohl(ps14->duration_nsec);
7112 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7113 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7114 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7115 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7116 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7117 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7118 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7119 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7120 ops->stats.rx_frame_errors = UINT64_MAX;
7121 ops->stats.rx_over_errors = UINT64_MAX;
7122 ops->stats.rx_crc_errors = UINT64_MAX;
7123 ops->stats.collisions = UINT64_MAX;
7125 while (properties.size > 0) {
7126 struct ofpbuf payload;
7130 error = ofpprop_pull(&properties, &payload, &type);
7136 case OFPPSPT14_ETHERNET:
7137 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7141 error = OFPPROP_UNKNOWN(true, "port stats", type);
7153 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7156 ofputil_count_port_stats(const struct ofp_header *oh)
7158 struct ofputil_port_stats ps;
7162 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7163 ofpraw_pull_assert(&b);
7164 while (!ofputil_decode_port_stats(&ps, &b)) {
7170 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7171 * ofputil_port_stats in 'ps'.
7173 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7174 * message. Calling this function multiple times for a single 'msg' iterates
7175 * through the replies. The caller must initially leave 'msg''s layer pointers
7176 * null and not modify them between calls.
7178 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7179 * otherwise a positive errno value. */
7181 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7186 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7187 : ofpraw_pull(&raw, msg));
7194 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7195 return ofputil_pull_ofp14_port_stats(ps, msg);
7196 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7197 const struct ofp13_port_stats *ps13;
7199 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7203 return ofputil_port_stats_from_ofp13(ps, ps13);
7204 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7205 const struct ofp11_port_stats *ps11;
7207 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7211 return ofputil_port_stats_from_ofp11(ps, ps11);
7212 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7213 const struct ofp10_port_stats *ps10;
7215 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7219 return ofputil_port_stats_from_ofp10(ps, ps10);
7225 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7226 "bytes at end", msg->size);
7227 return OFPERR_OFPBRC_BAD_LEN;
7230 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7231 * port number and stores the latter in '*ofp10_port'.
7232 * Returns 0 if successful, otherwise an OFPERR_* number. */
7234 ofputil_decode_port_stats_request(const struct ofp_header *request,
7235 ofp_port_t *ofp10_port)
7237 switch ((enum ofp_version)request->version) {
7242 case OFP11_VERSION: {
7243 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7244 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7247 case OFP10_VERSION: {
7248 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7249 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7258 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7260 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7262 struct ofputil_bucket *bucket;
7264 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7265 free(bucket->ofpacts);
7270 /* Clones 'bucket' and its ofpacts data */
7271 static struct ofputil_bucket *
7272 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7274 struct ofputil_bucket *new;
7276 new = xmemdup(bucket, sizeof *bucket);
7277 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7282 /* Clones each of the buckets in the list 'src' appending them
7283 * in turn to 'dest' which should be an initialised list.
7284 * An exception is that if the pointer value of a bucket in 'src'
7285 * matches 'skip' then it is not cloned or appended to 'dest'.
7286 * This allows all of 'src' or 'all of 'src' except 'skip' to
7287 * be cloned and appended to 'dest'. */
7289 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7290 const struct ofputil_bucket *skip)
7292 struct ofputil_bucket *bucket;
7294 LIST_FOR_EACH (bucket, list_node, src) {
7295 struct ofputil_bucket *new_bucket;
7297 if (bucket == skip) {
7301 new_bucket = ofputil_bucket_clone_data(bucket);
7302 list_push_back(dest, &new_bucket->list_node);
7306 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7307 * Returns the first bucket found or NULL if no buckets are found. */
7308 struct ofputil_bucket *
7309 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7311 struct ofputil_bucket *bucket;
7313 if (bucket_id > OFPG15_BUCKET_MAX) {
7317 LIST_FOR_EACH (bucket, list_node, buckets) {
7318 if (bucket->bucket_id == bucket_id) {
7326 /* Returns true if more than one bucket in the list 'buckets'
7327 * have the same bucket id. Returns false otherwise. */
7329 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7331 struct ofputil_bucket *i, *j;
7333 LIST_FOR_EACH (i, list_node, buckets) {
7334 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7338 if (i->bucket_id == j->bucket_id) {
7347 /* Returns the bucket at the front of the list 'buckets'.
7348 * Undefined if 'buckets is empty. */
7349 struct ofputil_bucket *
7350 ofputil_bucket_list_front(const struct ovs_list *buckets)
7352 static struct ofputil_bucket *bucket;
7354 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7359 /* Returns the bucket at the back of the list 'buckets'.
7360 * Undefined if 'buckets is empty. */
7361 struct ofputil_bucket *
7362 ofputil_bucket_list_back(const struct ovs_list *buckets)
7364 static struct ofputil_bucket *bucket;
7366 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7371 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7372 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7375 * Group statistics include packet and byte counts for each group. */
7377 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7380 struct ofpbuf *request;
7382 switch (ofp_version) {
7384 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7385 "(\'-O OpenFlow11\')");
7390 case OFP15_VERSION: {
7391 struct ofp11_group_stats_request *req;
7392 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7393 req = ofpbuf_put_zeros(request, sizeof *req);
7394 req->group_id = htonl(group_id);
7405 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7407 ofputil_bucket_list_destroy(&gd->buckets);
7408 free(&gd->props.fields);
7411 /* Decodes the OpenFlow group description request in 'oh', returning the group
7412 * whose description is requested, or OFPG_ALL if stats for all groups was
7415 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7417 struct ofpbuf request;
7420 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7421 raw = ofpraw_pull_assert(&request);
7422 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7424 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7425 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7426 return ntohl(*group_id);
7432 /* Returns an OpenFlow group description request for OpenFlow version
7433 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7434 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7437 * Group descriptions include the bucket and action configuration for each
7440 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7443 struct ofpbuf *request;
7445 switch (ofp_version) {
7447 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7448 "(\'-O OpenFlow11\')");
7453 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7456 case OFP15_VERSION:{
7457 struct ofp15_group_desc_request *req;
7458 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7460 req = ofpbuf_put_zeros(request, sizeof *req);
7461 req->group_id = htonl(group_id);
7472 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7473 struct ofp11_bucket_counter bucket_cnts[])
7477 for (i = 0; i < gs->n_buckets; i++) {
7478 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7479 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7484 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7485 struct ofp11_group_stats *gs11, size_t length,
7486 struct ofp11_bucket_counter bucket_cnts[])
7488 memset(gs11, 0, sizeof *gs11);
7489 gs11->length = htons(length);
7490 gs11->group_id = htonl(gs->group_id);
7491 gs11->ref_count = htonl(gs->ref_count);
7492 gs11->packet_count = htonll(gs->packet_count);
7493 gs11->byte_count = htonll(gs->byte_count);
7494 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7498 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7499 struct ofp13_group_stats *gs13, size_t length,
7500 struct ofp11_bucket_counter bucket_cnts[])
7502 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7503 gs13->duration_sec = htonl(gs->duration_sec);
7504 gs13->duration_nsec = htonl(gs->duration_nsec);
7508 /* Encodes 'gs' properly for the format of the list of group statistics
7509 * replies already begun in 'replies' and appends it to the list. 'replies'
7510 * must have originally been initialized with ofpmp_init(). */
7512 ofputil_append_group_stats(struct ovs_list *replies,
7513 const struct ofputil_group_stats *gs)
7515 size_t bucket_counter_size;
7516 struct ofp11_bucket_counter *bucket_counters;
7519 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7521 switch (ofpmp_version(replies)) {
7523 case OFP12_VERSION:{
7524 struct ofp11_group_stats *gs11;
7526 length = sizeof *gs11 + bucket_counter_size;
7527 gs11 = ofpmp_append(replies, length);
7528 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7529 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7535 case OFP15_VERSION: {
7536 struct ofp13_group_stats *gs13;
7538 length = sizeof *gs13 + bucket_counter_size;
7539 gs13 = ofpmp_append(replies, length);
7540 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7541 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7550 /* Returns an OpenFlow group features request for OpenFlow version
7553 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7555 struct ofpbuf *request = NULL;
7557 switch (ofp_version) {
7560 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7561 "(\'-O OpenFlow12\')");
7566 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7576 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7577 * group features request 'request'. */
7579 ofputil_encode_group_features_reply(
7580 const struct ofputil_group_features *features,
7581 const struct ofp_header *request)
7583 struct ofp12_group_features_stats *ogf;
7584 struct ofpbuf *reply;
7587 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7588 request->version, request->xid, 0);
7589 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7590 ogf->types = htonl(features->types);
7591 ogf->capabilities = htonl(features->capabilities);
7592 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7593 ogf->max_groups[i] = htonl(features->max_groups[i]);
7594 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7601 /* Decodes group features reply 'oh' into 'features'. */
7603 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7604 struct ofputil_group_features *features)
7606 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7609 features->types = ntohl(ogf->types);
7610 features->capabilities = ntohl(ogf->capabilities);
7611 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7612 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7613 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7614 ogf->actions[i], oh->version);
7618 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7619 * group ID and stores the latter in '*group_id'.
7620 * Returns 0 if successful, otherwise an OFPERR_* number. */
7622 ofputil_decode_group_stats_request(const struct ofp_header *request,
7625 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7626 *group_id = ntohl(gsr11->group_id);
7630 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7631 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7632 * caller to eventually free.
7634 * Multiple group stats replies can be packed into a single OpenFlow message.
7635 * Calling this function multiple times for a single 'msg' iterates through the
7636 * replies. The caller must initially leave 'msg''s layer pointers null and
7637 * not modify them between calls.
7639 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7640 * otherwise a positive errno value. */
7642 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7643 struct ofputil_group_stats *gs)
7645 struct ofp11_bucket_counter *obc;
7646 struct ofp11_group_stats *ogs11;
7653 gs->bucket_stats = NULL;
7654 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7655 : ofpraw_pull(&raw, msg));
7664 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7665 base_len = sizeof *ogs11;
7666 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7667 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7668 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7669 struct ofp13_group_stats *ogs13;
7671 base_len = sizeof *ogs13;
7672 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7675 gs->duration_sec = ntohl(ogs13->duration_sec);
7676 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7685 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7686 ofpraw_get_name(raw), msg->size);
7687 return OFPERR_OFPBRC_BAD_LEN;
7689 length = ntohs(ogs11->length);
7690 if (length < sizeof base_len) {
7691 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7692 ofpraw_get_name(raw), length);
7693 return OFPERR_OFPBRC_BAD_LEN;
7696 gs->group_id = ntohl(ogs11->group_id);
7697 gs->ref_count = ntohl(ogs11->ref_count);
7698 gs->packet_count = ntohll(ogs11->packet_count);
7699 gs->byte_count = ntohll(ogs11->byte_count);
7701 gs->n_buckets = (length - base_len) / sizeof *obc;
7702 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7704 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7705 ofpraw_get_name(raw), msg->size);
7706 return OFPERR_OFPBRC_BAD_LEN;
7709 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7710 for (i = 0; i < gs->n_buckets; i++) {
7711 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7712 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7719 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7720 struct ofpbuf *openflow, enum ofp_version ofp_version)
7722 struct ofp11_bucket *ob;
7725 start = openflow->size;
7726 ofpbuf_put_zeros(openflow, sizeof *ob);
7727 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7728 openflow, ofp_version);
7729 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7730 ob->len = htons(openflow->size - start);
7731 ob->weight = htons(bucket->weight);
7732 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7733 ob->watch_group = htonl(bucket->watch_group);
7737 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7738 uint32_t bucket_id, enum ofp11_group_type group_type,
7739 struct ofpbuf *openflow, enum ofp_version ofp_version)
7741 struct ofp15_bucket *ob;
7742 size_t start, actions_start, actions_len;
7744 start = openflow->size;
7745 ofpbuf_put_zeros(openflow, sizeof *ob);
7747 actions_start = openflow->size;
7748 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7749 openflow, ofp_version);
7750 actions_len = openflow->size - actions_start;
7752 if (group_type == OFPGT11_SELECT) {
7753 ofpprop_put_u16(openflow, OFPGBPT15_WEIGHT, bucket->weight);
7755 if (bucket->watch_port != OFPP_ANY) {
7756 ofpprop_put_be32(openflow, OFPGBPT15_WATCH_PORT,
7757 ofputil_port_to_ofp11(bucket->watch_port));
7759 if (bucket->watch_group != OFPG_ANY) {
7760 ofpprop_put_u32(openflow, OFPGBPT15_WATCH_GROUP, bucket->watch_group);
7763 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7764 ob->len = htons(openflow->size - start);
7765 ob->action_array_len = htons(actions_len);
7766 ob->bucket_id = htonl(bucket_id);
7770 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7771 const struct ofputil_group_props *gp,
7772 struct ofpbuf *openflow)
7774 struct ntr_group_prop_selection_method *prop;
7777 start = openflow->size;
7778 ofpbuf_put_zeros(openflow, sizeof *prop);
7779 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7780 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7781 prop->type = htons(OFPGPT15_EXPERIMENTER);
7782 prop->experimenter = htonl(NTR_VENDOR_ID);
7783 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7784 strcpy(prop->selection_method, gp->selection_method);
7785 prop->selection_method_param = htonll(gp->selection_method_param);
7786 ofpprop_end(openflow, start);
7790 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7791 const struct ovs_list *buckets,
7792 struct ovs_list *replies,
7793 enum ofp_version version)
7795 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7796 struct ofp11_group_desc_stats *ogds;
7797 struct ofputil_bucket *bucket;
7800 start_ogds = reply->size;
7801 ofpbuf_put_zeros(reply, sizeof *ogds);
7802 LIST_FOR_EACH (bucket, list_node, buckets) {
7803 ofputil_put_ofp11_bucket(bucket, reply, version);
7805 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7806 ogds->length = htons(reply->size - start_ogds);
7807 ogds->type = gds->type;
7808 ogds->group_id = htonl(gds->group_id);
7810 ofpmp_postappend(replies, start_ogds);
7814 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
7815 const struct ovs_list *buckets,
7816 struct ovs_list *replies,
7817 enum ofp_version version)
7819 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7820 struct ofp15_group_desc_stats *ogds;
7821 struct ofputil_bucket *bucket;
7822 size_t start_ogds, start_buckets;
7824 start_ogds = reply->size;
7825 ofpbuf_put_zeros(reply, sizeof *ogds);
7826 start_buckets = reply->size;
7827 LIST_FOR_EACH (bucket, list_node, buckets) {
7828 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
7829 gds->type, reply, version);
7831 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7832 ogds->type = gds->type;
7833 ogds->group_id = htonl(gds->group_id);
7834 ogds->bucket_list_len = htons(reply->size - start_buckets);
7836 /* Add group properties */
7837 if (gds->props.selection_method[0]) {
7838 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
7841 ogds->length = htons(reply->size - start_ogds);
7843 ofpmp_postappend(replies, start_ogds);
7846 /* Appends a group stats reply that contains the data in 'gds' to those already
7847 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7848 * initialized with ofpmp_init(). */
7850 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7851 const struct ovs_list *buckets,
7852 struct ovs_list *replies)
7854 enum ofp_version version = ofpmp_version(replies);
7862 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
7866 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
7876 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
7877 enum ofp_version version, struct ovs_list *buckets)
7879 struct ofp11_bucket *ob;
7880 uint32_t bucket_id = 0;
7883 while (buckets_length > 0) {
7884 struct ofputil_bucket *bucket;
7885 struct ofpbuf ofpacts;
7889 ob = (buckets_length >= sizeof *ob
7890 ? ofpbuf_try_pull(msg, sizeof *ob)
7893 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
7895 return OFPERR_OFPGMFC_BAD_BUCKET;
7898 ob_len = ntohs(ob->len);
7899 if (ob_len < sizeof *ob) {
7900 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7901 "%"PRIuSIZE" is not valid", ob_len);
7902 return OFPERR_OFPGMFC_BAD_BUCKET;
7903 } else if (ob_len > buckets_length) {
7904 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7905 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
7906 ob_len, buckets_length);
7907 return OFPERR_OFPGMFC_BAD_BUCKET;
7909 buckets_length -= ob_len;
7911 ofpbuf_init(&ofpacts, 0);
7912 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
7915 ofpbuf_uninit(&ofpacts);
7916 ofputil_bucket_list_destroy(buckets);
7920 bucket = xzalloc(sizeof *bucket);
7921 bucket->weight = ntohs(ob->weight);
7922 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
7924 ofpbuf_uninit(&ofpacts);
7925 ofputil_bucket_list_destroy(buckets);
7926 return OFPERR_OFPGMFC_BAD_WATCH;
7928 bucket->watch_group = ntohl(ob->watch_group);
7929 bucket->bucket_id = bucket_id++;
7931 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
7932 bucket->ofpacts_len = ofpacts.size;
7933 list_push_back(buckets, &bucket->list_node);
7940 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
7941 enum ofp_version version, uint8_t group_type,
7942 struct ovs_list *buckets)
7944 struct ofp15_bucket *ob;
7947 while (buckets_length > 0) {
7948 struct ofputil_bucket *bucket = NULL;
7949 struct ofpbuf ofpacts;
7950 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
7951 struct ofpbuf properties;
7952 size_t ob_len, actions_len, properties_len;
7953 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
7954 ovs_be32 watch_group = htonl(OFPG_ANY);
7955 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
7957 ofpbuf_init(&ofpacts, 0);
7959 ob = ofpbuf_try_pull(msg, sizeof *ob);
7961 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
7962 " leftover bytes", buckets_length);
7966 ob_len = ntohs(ob->len);
7967 actions_len = ntohs(ob->action_array_len);
7969 if (ob_len < sizeof *ob) {
7970 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7971 "%"PRIuSIZE" is not valid", ob_len);
7973 } else if (ob_len > buckets_length) {
7974 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7975 "%"PRIuSIZE" exceeds remaining buckets data size %"
7976 PRIuSIZE, ob_len, buckets_length);
7978 } else if (actions_len > ob_len - sizeof *ob) {
7979 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
7980 "length %"PRIuSIZE" exceeds remaining bucket "
7981 "data size %"PRIuSIZE, actions_len,
7982 ob_len - sizeof *ob);
7985 buckets_length -= ob_len;
7987 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
7993 properties_len = ob_len - sizeof *ob - actions_len;
7994 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
7997 while (properties.size > 0) {
7998 struct ofpbuf payload;
8001 err = ofpprop_pull(&properties, &payload, &type);
8007 case OFPGBPT15_WEIGHT:
8008 err = ofpprop_parse_be16(&payload, &weight);
8011 case OFPGBPT15_WATCH_PORT:
8012 err = ofpprop_parse_be32(&payload, &watch_port);
8015 case OFPGBPT15_WATCH_GROUP:
8016 err = ofpprop_parse_be32(&payload, &watch_group);
8020 err = OFPPROP_UNKNOWN(false, "group bucket", type);
8029 bucket = xzalloc(sizeof *bucket);
8031 bucket->weight = ntohs(weight);
8032 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8034 err = OFPERR_OFPGMFC_BAD_WATCH;
8037 bucket->watch_group = ntohl(watch_group);
8038 bucket->bucket_id = ntohl(ob->bucket_id);
8039 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8040 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8042 err = OFPERR_OFPGMFC_BAD_BUCKET;
8046 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8047 bucket->ofpacts_len = ofpacts.size;
8048 list_push_back(buckets, &bucket->list_node);
8054 ofpbuf_uninit(&ofpacts);
8055 ofputil_bucket_list_destroy(buckets);
8059 if (ofputil_bucket_check_duplicate_id(buckets)) {
8060 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8061 ofputil_bucket_list_destroy(buckets);
8062 return OFPERR_OFPGMFC_BAD_BUCKET;
8069 ofputil_init_group_properties(struct ofputil_group_props *gp)
8071 memset(gp, 0, sizeof *gp);
8075 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8076 enum ofp11_group_type group_type,
8077 enum ofp15_group_mod_command group_cmd,
8078 struct ofputil_group_props *gp)
8080 struct ntr_group_prop_selection_method *prop = payload->data;
8081 size_t fields_len, method_len;
8084 switch (group_type) {
8085 case OFPGT11_SELECT:
8088 case OFPGT11_INDIRECT:
8090 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
8091 "only allowed for select groups");
8092 return OFPERR_OFPBPC_BAD_VALUE;
8097 switch (group_cmd) {
8099 case OFPGC15_MODIFY:
8101 case OFPGC15_DELETE:
8102 case OFPGC15_INSERT_BUCKET:
8103 case OFPGC15_REMOVE_BUCKET:
8104 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
8105 "only allowed for add and delete group modifications");
8106 return OFPERR_OFPBPC_BAD_VALUE;
8111 if (payload->size < sizeof *prop) {
8112 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property "
8113 "length %u is not valid", payload->size);
8114 return OFPERR_OFPBPC_BAD_LEN;
8117 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8119 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8120 OFPPROP_LOG(&bad_ofmsg_rl, false,
8121 "ntr selection method is not null terminated");
8122 return OFPERR_OFPBPC_BAD_VALUE;
8125 if (strcmp("hash", prop->selection_method)) {
8126 OFPPROP_LOG(&bad_ofmsg_rl, false,
8127 "ntr selection method '%s' is not supported",
8128 prop->selection_method);
8129 return OFPERR_OFPBPC_BAD_VALUE;
8132 strcpy(gp->selection_method, prop->selection_method);
8133 gp->selection_method_param = ntohll(prop->selection_method_param);
8135 if (!method_len && gp->selection_method_param) {
8136 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
8137 "non-zero but selection method is empty");
8138 return OFPERR_OFPBPC_BAD_VALUE;
8141 ofpbuf_pull(payload, sizeof *prop);
8143 fields_len = ntohs(prop->length) - sizeof *prop;
8144 if (!method_len && fields_len) {
8145 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
8146 "zero but fields are provided");
8147 return OFPERR_OFPBPC_BAD_VALUE;
8150 error = oxm_pull_field_array(payload->data, fields_len,
8153 OFPPROP_LOG(&bad_ofmsg_rl, false,
8154 "ntr selection method fields are invalid");
8162 parse_ofp15_group_properties(struct ofpbuf *msg,
8163 enum ofp11_group_type group_type,
8164 enum ofp15_group_mod_command group_cmd,
8165 struct ofputil_group_props *gp,
8166 size_t properties_len)
8168 struct ofpbuf properties;
8170 ofpbuf_use_const(&properties, ofpbuf_pull(msg, properties_len),
8173 while (properties.size > 0) {
8174 struct ofpbuf payload;
8178 error = ofpprop_pull(&properties, &payload, &type);
8184 case OFPPROP_EXP(NTR_VENDOR_ID, NTRT_SELECTION_METHOD):
8185 case OFPPROP_EXP(NTR_COMPAT_VENDOR_ID, NTRT_SELECTION_METHOD):
8186 error = parse_group_prop_ntr_selection_method(&payload, group_type,
8191 error = OFPPROP_UNKNOWN(false, "group", type);
8204 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8206 enum ofp_version version)
8208 struct ofp11_group_desc_stats *ogds;
8212 ofpraw_pull_assert(msg);
8219 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8221 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8222 "leftover bytes at end", msg->size);
8223 return OFPERR_OFPBRC_BAD_LEN;
8225 gd->type = ogds->type;
8226 gd->group_id = ntohl(ogds->group_id);
8228 length = ntohs(ogds->length);
8229 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8230 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8231 "length %"PRIuSIZE, length);
8232 return OFPERR_OFPBRC_BAD_LEN;
8235 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8240 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8242 enum ofp_version version)
8244 struct ofp15_group_desc_stats *ogds;
8245 uint16_t length, bucket_list_len;
8249 ofpraw_pull_assert(msg);
8256 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8258 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8259 "leftover bytes at end", msg->size);
8260 return OFPERR_OFPBRC_BAD_LEN;
8262 gd->type = ogds->type;
8263 gd->group_id = ntohl(ogds->group_id);
8265 length = ntohs(ogds->length);
8266 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8267 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8268 "length %u", length);
8269 return OFPERR_OFPBRC_BAD_LEN;
8272 bucket_list_len = ntohs(ogds->bucket_list_len);
8273 if (length < bucket_list_len + sizeof *ogds) {
8274 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8275 "bucket list length %u", bucket_list_len);
8276 return OFPERR_OFPBRC_BAD_LEN;
8278 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8284 /* By definition group desc messages don't have a group mod command.
8285 * However, parse_group_prop_ntr_selection_method() checks to make sure
8286 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8287 * against group mod messages with other commands supplying
8288 * a NTR selection method group experimenter property.
8289 * Such properties are valid for group desc replies so
8290 * claim that the group mod command is OFPGC15_ADD to
8291 * satisfy the check in parse_group_prop_ntr_selection_method() */
8292 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8293 length - sizeof *ogds - bucket_list_len);
8296 /* Converts a group description reply in 'msg' into an abstract
8297 * ofputil_group_desc in 'gd'.
8299 * Multiple group description replies can be packed into a single OpenFlow
8300 * message. Calling this function multiple times for a single 'msg' iterates
8301 * through the replies. The caller must initially leave 'msg''s layer pointers
8302 * null and not modify them between calls.
8304 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8305 * otherwise a positive errno value. */
8307 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8308 struct ofpbuf *msg, enum ofp_version version)
8310 ofputil_init_group_properties(&gd->props);
8318 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8321 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8330 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8332 ofputil_bucket_list_destroy(&gm->buckets);
8335 static struct ofpbuf *
8336 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8337 const struct ofputil_group_mod *gm)
8340 struct ofp11_group_mod *ogm;
8342 struct ofputil_bucket *bucket;
8344 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8345 start_ogm = b->size;
8346 ofpbuf_put_zeros(b, sizeof *ogm);
8348 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8349 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8351 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8352 ogm->command = htons(gm->command);
8353 ogm->type = gm->type;
8354 ogm->group_id = htonl(gm->group_id);
8359 static struct ofpbuf *
8360 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8361 const struct ofputil_group_mod *gm)
8364 struct ofp15_group_mod *ogm;
8366 struct ofputil_bucket *bucket;
8367 struct id_pool *bucket_ids = NULL;
8369 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8370 start_ogm = b->size;
8371 ofpbuf_put_zeros(b, sizeof *ogm);
8373 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8376 /* Generate a bucket id if none was supplied */
8377 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8379 const struct ofputil_bucket *bkt;
8381 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8383 /* Mark all bucket_ids that are present in gm
8384 * as used in the pool. */
8385 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8386 if (bkt == bucket) {
8389 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8390 id_pool_add(bucket_ids, bkt->bucket_id);
8395 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8399 bucket_id = bucket->bucket_id;
8402 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8404 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8405 ogm->command = htons(gm->command);
8406 ogm->type = gm->type;
8407 ogm->group_id = htonl(gm->group_id);
8408 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8409 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8411 /* Add group properties */
8412 if (gm->props.selection_method[0]) {
8413 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8416 id_pool_destroy(bucket_ids);
8421 bad_group_cmd(enum ofp15_group_mod_command cmd)
8423 const char *opt_version;
8424 const char *version;
8425 const char *cmd_str;
8429 case OFPGC15_MODIFY:
8430 case OFPGC15_DELETE:
8435 case OFPGC15_INSERT_BUCKET:
8436 case OFPGC15_REMOVE_BUCKET:
8447 cmd_str = "add-group";
8450 case OFPGC15_MODIFY:
8451 cmd_str = "mod-group";
8454 case OFPGC15_DELETE:
8455 cmd_str = "del-group";
8458 case OFPGC15_INSERT_BUCKET:
8459 cmd_str = "insert-bucket";
8462 case OFPGC15_REMOVE_BUCKET:
8463 cmd_str = "remove-bucket";
8470 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8471 cmd_str, version, opt_version);
8475 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8476 * 'ofp_version' and returns the message. */
8478 ofputil_encode_group_mod(enum ofp_version ofp_version,
8479 const struct ofputil_group_mod *gm)
8482 switch (ofp_version) {
8484 bad_group_cmd(gm->command);
8490 if (gm->command > OFPGC11_DELETE) {
8491 bad_group_cmd(gm->command);
8493 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8496 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8504 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8505 struct ofputil_group_mod *gm)
8507 const struct ofp11_group_mod *ogm;
8510 ogm = ofpbuf_pull(msg, sizeof *ogm);
8511 gm->command = ntohs(ogm->command);
8512 gm->type = ogm->type;
8513 gm->group_id = ntohl(ogm->group_id);
8514 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8516 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8519 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8521 && ofp_version >= OFP13_VERSION
8522 && gm->command == OFPGC11_DELETE
8523 && !list_is_empty(&gm->buckets)) {
8524 error = OFPERR_OFPGMFC_INVALID_GROUP;
8531 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8532 struct ofputil_group_mod *gm)
8534 const struct ofp15_group_mod *ogm;
8535 uint16_t bucket_list_len;
8536 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8538 ogm = ofpbuf_pull(msg, sizeof *ogm);
8539 gm->command = ntohs(ogm->command);
8540 gm->type = ogm->type;
8541 gm->group_id = ntohl(ogm->group_id);
8543 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8544 switch (gm->command) {
8545 case OFPGC15_REMOVE_BUCKET:
8546 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8550 case OFPGC15_INSERT_BUCKET:
8551 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8552 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8553 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8559 case OFPGC11_MODIFY:
8560 case OFPGC11_DELETE:
8562 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8568 VLOG_WARN_RL(&bad_ofmsg_rl,
8569 "group command bucket id (%u) is out of range",
8570 gm->command_bucket_id);
8571 return OFPERR_OFPGMFC_BAD_BUCKET;
8574 bucket_list_len = ntohs(ogm->bucket_array_len);
8575 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8576 gm->type, &gm->buckets);
8581 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8585 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8586 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8588 ofputil_decode_group_mod(const struct ofp_header *oh,
8589 struct ofputil_group_mod *gm)
8591 enum ofp_version ofp_version = oh->version;
8593 struct ofputil_bucket *bucket;
8596 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
8597 ofpraw_pull_assert(&msg);
8599 ofputil_init_group_properties(&gm->props);
8601 switch (ofp_version)
8607 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8611 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8624 case OFPGT11_INDIRECT:
8625 if (!list_is_singleton(&gm->buckets)) {
8626 return OFPERR_OFPGMFC_INVALID_GROUP;
8630 case OFPGT11_SELECT:
8634 return OFPERR_OFPGMFC_BAD_TYPE;
8637 switch (gm->command) {
8639 case OFPGC11_MODIFY:
8640 case OFPGC11_DELETE:
8641 case OFPGC15_INSERT_BUCKET:
8643 case OFPGC15_REMOVE_BUCKET:
8644 if (!list_is_empty(&gm->buckets)) {
8645 return OFPERR_OFPGMFC_BAD_BUCKET;
8649 return OFPERR_OFPGMFC_BAD_COMMAND;
8652 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8653 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8654 return OFPERR_OFPGMFC_INVALID_GROUP;
8659 case OFPGT11_INDIRECT:
8660 if (ofputil_bucket_has_liveness(bucket)) {
8661 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8664 case OFPGT11_SELECT:
8667 if (!ofputil_bucket_has_liveness(bucket)) {
8668 return OFPERR_OFPGMFC_INVALID_GROUP;
8672 /* Returning BAD TYPE to be consistent
8673 * though gm->type has been checked already. */
8674 return OFPERR_OFPGMFC_BAD_TYPE;
8681 /* Parse a queue status request message into 'oqsr'.
8682 * Returns 0 if successful, otherwise an OFPERR_* number. */
8684 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8685 struct ofputil_queue_stats_request *oqsr)
8687 switch ((enum ofp_version)request->version) {
8692 case OFP11_VERSION: {
8693 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8694 oqsr->queue_id = ntohl(qsr11->queue_id);
8695 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8698 case OFP10_VERSION: {
8699 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8700 oqsr->queue_id = ntohl(qsr10->queue_id);
8701 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8702 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
8703 if (oqsr->port_no == OFPP_ALL) {
8704 oqsr->port_no = OFPP_ANY;
8714 /* Encode a queue stats request for 'oqsr', the encoded message
8715 * will be for OpenFlow version 'ofp_version'. Returns message
8716 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
8718 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
8719 const struct ofputil_queue_stats_request *oqsr)
8721 struct ofpbuf *request;
8723 switch (ofp_version) {
8728 case OFP15_VERSION: {
8729 struct ofp11_queue_stats_request *req;
8730 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
8731 req = ofpbuf_put_zeros(request, sizeof *req);
8732 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
8733 req->queue_id = htonl(oqsr->queue_id);
8736 case OFP10_VERSION: {
8737 struct ofp10_queue_stats_request *req;
8738 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
8739 req = ofpbuf_put_zeros(request, sizeof *req);
8740 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
8741 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
8742 ? OFPP_ALL : oqsr->port_no));
8743 req->queue_id = htonl(oqsr->queue_id);
8753 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
8756 ofputil_count_queue_stats(const struct ofp_header *oh)
8758 struct ofputil_queue_stats qs;
8762 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8763 ofpraw_pull_assert(&b);
8764 while (!ofputil_decode_queue_stats(&qs, &b)) {
8771 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
8772 const struct ofp10_queue_stats *qs10)
8774 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
8775 oqs->queue_id = ntohl(qs10->queue_id);
8776 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
8777 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
8778 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
8779 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8785 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
8786 const struct ofp11_queue_stats *qs11)
8790 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
8795 oqs->queue_id = ntohl(qs11->queue_id);
8796 oqs->tx_bytes = ntohll(qs11->tx_bytes);
8797 oqs->tx_packets = ntohll(qs11->tx_packets);
8798 oqs->tx_errors = ntohll(qs11->tx_errors);
8799 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8805 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
8806 const struct ofp13_queue_stats *qs13)
8808 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
8810 oqs->duration_sec = ntohl(qs13->duration_sec);
8811 oqs->duration_nsec = ntohl(qs13->duration_nsec);
8818 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
8821 const struct ofp14_queue_stats *qs14;
8824 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
8826 return OFPERR_OFPBRC_BAD_LEN;
8829 len = ntohs(qs14->length);
8830 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
8831 return OFPERR_OFPBRC_BAD_LEN;
8833 ofpbuf_pull(msg, len - sizeof *qs14);
8835 /* No properties yet defined, so ignore them for now. */
8837 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
8840 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
8841 * ofputil_queue_stats in 'qs'.
8843 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
8844 * message. Calling this function multiple times for a single 'msg' iterates
8845 * through the replies. The caller must initially leave 'msg''s layer pointers
8846 * null and not modify them between calls.
8848 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8849 * otherwise a positive errno value. */
8851 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
8856 error = (msg->header ? ofpraw_decode(&raw, msg->header)
8857 : ofpraw_pull(&raw, msg));
8864 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
8865 return ofputil_pull_ofp14_queue_stats(qs, msg);
8866 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
8867 const struct ofp13_queue_stats *qs13;
8869 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
8873 return ofputil_queue_stats_from_ofp13(qs, qs13);
8874 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
8875 const struct ofp11_queue_stats *qs11;
8877 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
8881 return ofputil_queue_stats_from_ofp11(qs, qs11);
8882 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
8883 const struct ofp10_queue_stats *qs10;
8885 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
8889 return ofputil_queue_stats_from_ofp10(qs, qs10);
8895 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
8896 "bytes at end", msg->size);
8897 return OFPERR_OFPBRC_BAD_LEN;
8901 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
8902 struct ofp10_queue_stats *qs10)
8904 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
8905 memset(qs10->pad, 0, sizeof qs10->pad);
8906 qs10->queue_id = htonl(oqs->queue_id);
8907 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
8908 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
8909 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
8913 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
8914 struct ofp11_queue_stats *qs11)
8916 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
8917 qs11->queue_id = htonl(oqs->queue_id);
8918 qs11->tx_bytes = htonll(oqs->tx_bytes);
8919 qs11->tx_packets = htonll(oqs->tx_packets);
8920 qs11->tx_errors = htonll(oqs->tx_errors);
8924 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
8925 struct ofp13_queue_stats *qs13)
8927 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
8928 if (oqs->duration_sec != UINT32_MAX) {
8929 qs13->duration_sec = htonl(oqs->duration_sec);
8930 qs13->duration_nsec = htonl(oqs->duration_nsec);
8932 qs13->duration_sec = OVS_BE32_MAX;
8933 qs13->duration_nsec = OVS_BE32_MAX;
8938 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
8939 struct ofp14_queue_stats *qs14)
8941 qs14->length = htons(sizeof *qs14);
8942 memset(qs14->pad, 0, sizeof qs14->pad);
8943 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
8947 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
8949 ofputil_append_queue_stat(struct ovs_list *replies,
8950 const struct ofputil_queue_stats *oqs)
8952 switch (ofpmp_version(replies)) {
8953 case OFP13_VERSION: {
8954 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8955 ofputil_queue_stats_to_ofp13(oqs, reply);
8960 case OFP11_VERSION: {
8961 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8962 ofputil_queue_stats_to_ofp11(oqs, reply);
8966 case OFP10_VERSION: {
8967 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8968 ofputil_queue_stats_to_ofp10(oqs, reply);
8973 case OFP15_VERSION: {
8974 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8975 ofputil_queue_stats_to_ofp14(oqs, reply);
8985 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
8986 struct ofputil_bundle_ctrl_msg *msg)
8990 const struct ofp14_bundle_ctrl_msg *m;
8992 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8993 raw = ofpraw_pull_assert(&b);
8994 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
8997 msg->bundle_id = ntohl(m->bundle_id);
8998 msg->type = ntohs(m->type);
8999 msg->flags = ntohs(m->flags);
9005 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9006 struct ofputil_bundle_ctrl_msg *bc)
9008 struct ofpbuf *request;
9009 struct ofp14_bundle_ctrl_msg *m;
9011 switch (ofp_version) {
9016 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9017 "(\'-O OpenFlow14\')");
9020 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9021 m = ofpbuf_put_zeros(request, sizeof *m);
9023 m->bundle_id = htonl(bc->bundle_id);
9024 m->type = htons(bc->type);
9025 m->flags = htons(bc->flags);
9035 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9036 struct ofputil_bundle_ctrl_msg *msg)
9039 struct ofp14_bundle_ctrl_msg *m;
9041 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9042 m = ofpbuf_put_zeros(buf, sizeof *m);
9044 m->bundle_id = htonl(msg->bundle_id);
9045 m->type = htons(msg->type);
9046 m->flags = htons(msg->flags);
9051 /* Return true for bundlable state change requests, false for other messages.
9054 ofputil_is_bundlable(enum ofptype type)
9057 /* Minimum required by OpenFlow 1.4. */
9058 case OFPTYPE_PORT_MOD:
9059 case OFPTYPE_FLOW_MOD:
9062 /* Nice to have later. */
9063 case OFPTYPE_FLOW_MOD_TABLE_ID:
9064 case OFPTYPE_GROUP_MOD:
9065 case OFPTYPE_TABLE_MOD:
9066 case OFPTYPE_METER_MOD:
9067 case OFPTYPE_PACKET_OUT:
9068 case OFPTYPE_NXT_TLV_TABLE_MOD:
9070 /* Not to be bundlable. */
9071 case OFPTYPE_ECHO_REQUEST:
9072 case OFPTYPE_FEATURES_REQUEST:
9073 case OFPTYPE_GET_CONFIG_REQUEST:
9074 case OFPTYPE_SET_CONFIG:
9075 case OFPTYPE_BARRIER_REQUEST:
9076 case OFPTYPE_ROLE_REQUEST:
9077 case OFPTYPE_ECHO_REPLY:
9078 case OFPTYPE_SET_FLOW_FORMAT:
9079 case OFPTYPE_SET_PACKET_IN_FORMAT:
9080 case OFPTYPE_SET_CONTROLLER_ID:
9081 case OFPTYPE_FLOW_AGE:
9082 case OFPTYPE_FLOW_MONITOR_CANCEL:
9083 case OFPTYPE_SET_ASYNC_CONFIG:
9084 case OFPTYPE_GET_ASYNC_REQUEST:
9085 case OFPTYPE_DESC_STATS_REQUEST:
9086 case OFPTYPE_FLOW_STATS_REQUEST:
9087 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9088 case OFPTYPE_TABLE_STATS_REQUEST:
9089 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9090 case OFPTYPE_TABLE_DESC_REQUEST:
9091 case OFPTYPE_PORT_STATS_REQUEST:
9092 case OFPTYPE_QUEUE_STATS_REQUEST:
9093 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9094 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9095 case OFPTYPE_METER_STATS_REQUEST:
9096 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9097 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9098 case OFPTYPE_GROUP_STATS_REQUEST:
9099 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9100 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9101 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9102 case OFPTYPE_BUNDLE_CONTROL:
9103 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9106 case OFPTYPE_FEATURES_REPLY:
9107 case OFPTYPE_GET_CONFIG_REPLY:
9108 case OFPTYPE_PACKET_IN:
9109 case OFPTYPE_FLOW_REMOVED:
9110 case OFPTYPE_PORT_STATUS:
9111 case OFPTYPE_BARRIER_REPLY:
9112 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9113 case OFPTYPE_DESC_STATS_REPLY:
9114 case OFPTYPE_FLOW_STATS_REPLY:
9115 case OFPTYPE_QUEUE_STATS_REPLY:
9116 case OFPTYPE_PORT_STATS_REPLY:
9117 case OFPTYPE_TABLE_STATS_REPLY:
9118 case OFPTYPE_AGGREGATE_STATS_REPLY:
9119 case OFPTYPE_PORT_DESC_STATS_REPLY:
9120 case OFPTYPE_ROLE_REPLY:
9121 case OFPTYPE_FLOW_MONITOR_PAUSED:
9122 case OFPTYPE_FLOW_MONITOR_RESUMED:
9123 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9124 case OFPTYPE_GET_ASYNC_REPLY:
9125 case OFPTYPE_GROUP_STATS_REPLY:
9126 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9127 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9128 case OFPTYPE_METER_STATS_REPLY:
9129 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9130 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9131 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9132 case OFPTYPE_TABLE_DESC_REPLY:
9133 case OFPTYPE_ROLE_STATUS:
9134 case OFPTYPE_REQUESTFORWARD:
9135 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9136 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9144 ofputil_decode_bundle_add(const struct ofp_header *oh,
9145 struct ofputil_bundle_add_msg *msg,
9146 enum ofptype *type_ptr)
9148 const struct ofp14_bundle_ctrl_msg *m;
9155 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9156 raw = ofpraw_pull_assert(&b);
9157 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9159 m = ofpbuf_pull(&b, sizeof *m);
9160 msg->bundle_id = ntohl(m->bundle_id);
9161 msg->flags = ntohs(m->flags);
9164 if (msg->msg->version != oh->version) {
9165 return OFPERR_NXBFC_BAD_VERSION;
9167 inner_len = ntohs(msg->msg->length);
9168 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9169 return OFPERR_OFPBFC_MSG_BAD_LEN;
9171 if (msg->msg->xid != oh->xid) {
9172 return OFPERR_OFPBFC_MSG_BAD_XID;
9175 /* Reject unbundlable messages. */
9179 error = ofptype_decode(type_ptr, msg->msg);
9181 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9182 "message is unparsable (%s)", ofperr_get_name(error));
9183 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9186 if (!ofputil_is_bundlable(*type_ptr)) {
9187 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9188 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(*type_ptr));
9189 return OFPERR_OFPBFC_MSG_UNSUP;
9196 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9197 struct ofputil_bundle_add_msg *msg)
9199 struct ofpbuf *request;
9200 struct ofp14_bundle_ctrl_msg *m;
9202 /* Must use the same xid as the embedded message. */
9203 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9205 m = ofpbuf_put_zeros(request, sizeof *m);
9207 m->bundle_id = htonl(msg->bundle_id);
9208 m->flags = htons(msg->flags);
9209 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9215 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9217 struct ofputil_tlv_map *map;
9219 LIST_FOR_EACH (map, list_node, mappings) {
9220 struct nx_tlv_map *nx_map;
9222 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9223 nx_map->option_class = htons(map->option_class);
9224 nx_map->option_type = map->option_type;
9225 nx_map->option_len = map->option_len;
9226 nx_map->index = htons(map->index);
9231 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9232 struct ofputil_tlv_table_mod *ttm)
9235 struct nx_tlv_table_mod *nx_ttm;
9237 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9238 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9239 nx_ttm->command = htons(ttm->command);
9240 encode_tlv_table_mappings(b, &ttm->mappings);
9246 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9247 struct ovs_list *mappings)
9249 list_init(mappings);
9252 struct nx_tlv_map *nx_map;
9253 struct ofputil_tlv_map *map;
9255 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9256 map = xmalloc(sizeof *map);
9257 list_push_back(mappings, &map->list_node);
9259 map->option_class = ntohs(nx_map->option_class);
9260 map->option_type = nx_map->option_type;
9262 map->option_len = nx_map->option_len;
9263 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9264 VLOG_WARN_RL(&bad_ofmsg_rl,
9265 "tlv table option length (%u) is not a valid option size",
9267 ofputil_uninit_tlv_table(mappings);
9268 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9271 map->index = ntohs(nx_map->index);
9272 if (map->index >= max_fields) {
9273 VLOG_WARN_RL(&bad_ofmsg_rl,
9274 "tlv table field index (%u) is too large (max %u)",
9275 map->index, max_fields - 1);
9276 ofputil_uninit_tlv_table(mappings);
9277 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9285 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9286 struct ofputil_tlv_table_mod *ttm)
9289 struct nx_tlv_table_mod *nx_ttm;
9291 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9292 ofpraw_pull_assert(&msg);
9294 nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9295 ttm->command = ntohs(nx_ttm->command);
9296 if (ttm->command > NXTTMC_CLEAR) {
9297 VLOG_WARN_RL(&bad_ofmsg_rl,
9298 "tlv table mod command (%u) is out of range",
9300 return OFPERR_NXTTMFC_BAD_COMMAND;
9303 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9308 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9309 struct ofputil_tlv_table_reply *ttr)
9312 struct nx_tlv_table_reply *nx_ttr;
9314 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9315 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9316 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9317 nx_ttr->max_fields = htons(ttr->max_fields);
9319 encode_tlv_table_mappings(b, &ttr->mappings);
9324 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9325 * if successful, otherwise an ofperr.
9327 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9328 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9329 * less than TUN_METADATA_NUM_OPTS. */
9331 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9332 struct ofputil_tlv_table_reply *ttr)
9335 struct nx_tlv_table_reply *nx_ttr;
9337 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
9338 ofpraw_pull_assert(&msg);
9340 nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9341 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9342 ttr->max_fields = ntohs(nx_ttr->max_fields);
9344 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9348 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9350 struct ofputil_tlv_map *map;
9352 LIST_FOR_EACH_POP (map, list_node, mappings) {
9357 /* Decodes the OpenFlow "set async config" request and "get async config
9358 * reply" message in '*oh' into an abstract form in 'master' and 'slave'.
9360 * If 'loose' is true, this function ignores properties and values that it does
9361 * not understand, as a controller would want to do when interpreting
9362 * capabilities provided by a switch. If 'loose' is false, this function
9363 * treats unknown properties and values as an error, as a switch would want to
9364 * do when interpreting a configuration request made by a controller.
9366 * Returns 0 if successful, otherwise an OFPERR_* value.
9368 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9369 * the valid range of mask.
9371 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9374 ofputil_decode_set_async_config(const struct ofp_header *oh,
9375 uint32_t master[OAM_N_TYPES],
9376 uint32_t slave[OAM_N_TYPES],
9382 ofpbuf_use_const(&b, oh, ntohs(oh->length));
9383 raw = ofpraw_pull_assert(&b);
9385 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9386 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9387 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9388 const struct nx_async_config *msg = ofpmsg_body(oh);
9390 master[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[0]);
9391 master[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[0]);
9392 master[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[0]);
9394 slave[OAM_PACKET_IN] = ntohl(msg->packet_in_mask[1]);
9395 slave[OAM_PORT_STATUS] = ntohl(msg->port_status_mask[1]);
9396 slave[OAM_FLOW_REMOVED] = ntohl(msg->flow_removed_mask[1]);
9398 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9399 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY) {
9401 while (b.size > 0) {
9402 struct ofpbuf property;
9407 error = ofpprop_pull__(&b, &property, 8, 0xfffe, &type);
9412 error = ofpprop_parse_u32(&property, &mask);
9418 error = ofputil_check_mask(type, mask);
9425 case OFPACPT_PACKET_IN_SLAVE:
9426 slave[OAM_PACKET_IN] = mask;
9429 case OFPACPT_PACKET_IN_MASTER:
9430 master[OAM_PACKET_IN] = mask;
9433 case OFPACPT_PORT_STATUS_SLAVE:
9434 slave[OAM_PORT_STATUS] = mask;
9437 case OFPACPT_PORT_STATUS_MASTER:
9438 master[OAM_PORT_STATUS] = mask;
9441 case OFPACPT_FLOW_REMOVED_SLAVE:
9442 slave[OAM_FLOW_REMOVED] = mask;
9445 case OFPACPT_FLOW_REMOVED_MASTER:
9446 master[OAM_FLOW_REMOVED] = mask;
9449 case OFPACPT_ROLE_STATUS_SLAVE:
9450 slave[OAM_ROLE_STATUS] = mask;
9453 case OFPACPT_ROLE_STATUS_MASTER:
9454 master[OAM_ROLE_STATUS] = mask;
9457 case OFPACPT_TABLE_STATUS_SLAVE:
9458 slave[OAM_TABLE_STATUS] = mask;
9461 case OFPACPT_TABLE_STATUS_MASTER:
9462 master[OAM_TABLE_STATUS] = mask;
9465 case OFPACPT_REQUESTFORWARD_SLAVE:
9466 slave[OAM_REQUESTFORWARD] = mask;
9469 case OFPACPT_REQUESTFORWARD_MASTER:
9470 master[OAM_REQUESTFORWARD] = mask;
9474 error = loose ? 0 : OFPERR_OFPACFC_UNSUPPORTED;
9479 return OFPERR_OFPBRC_BAD_VERSION;
9484 /* Append all asynchronous configuration properties in GET_ASYNC_REPLY
9485 * message, describing if various set of asynchronous messages are enabled
9488 ofputil_get_async_reply(struct ofpbuf *buf, const uint32_t master_mask,
9489 const uint32_t slave_mask, const uint32_t type)
9493 for (role = 0; role < 2; role++) {
9494 enum ofp14_async_config_prop_type prop_type;
9498 prop_type = (role ? OFPACPT_PACKET_IN_SLAVE
9499 : OFPACPT_PACKET_IN_MASTER);
9502 case OAM_PORT_STATUS:
9503 prop_type = (role ? OFPACPT_PORT_STATUS_SLAVE
9504 : OFPACPT_PORT_STATUS_MASTER);
9507 case OAM_FLOW_REMOVED:
9508 prop_type = (role ? OFPACPT_FLOW_REMOVED_SLAVE
9509 : OFPACPT_FLOW_REMOVED_MASTER);
9512 case OAM_ROLE_STATUS:
9513 prop_type = (role ? OFPACPT_ROLE_STATUS_SLAVE
9514 : OFPACPT_ROLE_STATUS_MASTER);
9517 case OAM_TABLE_STATUS:
9518 prop_type = (role ? OFPACPT_TABLE_STATUS_SLAVE
9519 : OFPACPT_TABLE_STATUS_MASTER);
9522 case OAM_REQUESTFORWARD:
9523 prop_type = (role ? OFPACPT_REQUESTFORWARD_SLAVE
9524 : OFPACPT_REQUESTFORWARD_MASTER);
9528 return OFPERR_OFPBRC_BAD_TYPE;
9530 ofpprop_put_u32(buf, prop_type, role ? slave_mask : master_mask);
9536 /* Returns a OpenFlow message that encodes 'asynchronous configuration' properly
9537 * as a reply to get async config request. */
9539 ofputil_encode_get_async_config(const struct ofp_header *oh,
9540 uint32_t master[OAM_N_TYPES],
9541 uint32_t slave[OAM_N_TYPES])
9546 buf = ofpraw_alloc_reply((oh->version < OFP14_VERSION
9547 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9548 : OFPRAW_OFPT14_GET_ASYNC_REPLY), oh, 0);
9550 if (oh->version < OFP14_VERSION) {
9551 struct nx_async_config *msg;
9552 msg = ofpbuf_put_zeros(buf, sizeof *msg);
9554 msg->packet_in_mask[0] = htonl(master[OAM_PACKET_IN]);
9555 msg->port_status_mask[0] = htonl(master[OAM_PORT_STATUS]);
9556 msg->flow_removed_mask[0] = htonl(master[OAM_FLOW_REMOVED]);
9558 msg->packet_in_mask[1] = htonl(slave[OAM_PACKET_IN]);
9559 msg->port_status_mask[1] = htonl(slave[OAM_PORT_STATUS]);
9560 msg->flow_removed_mask[1] = htonl(slave[OAM_FLOW_REMOVED]);
9561 } else if (oh->version == OFP14_VERSION) {
9562 for (type = 0; type < OAM_N_TYPES; type++) {
9563 ofputil_get_async_reply(buf, master[type], slave[type], type);