2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 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"
35 #include "ofp-actions.h"
36 #include "ofp-errors.h"
42 #include "unaligned.h"
43 #include "type-props.h"
47 VLOG_DEFINE_THIS_MODULE(ofp_util);
49 /* Rate limit for OpenFlow message parse errors. These always indicate a bug
50 * in the peer and so there's not much point in showing a lot of them. */
51 static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
53 static enum ofputil_table_miss ofputil_table_miss_from_config(
54 ovs_be32 config_, enum ofp_version);
56 struct ofp_prop_header {
61 /* Pulls a property, beginning with struct ofp_prop_header, from the beginning
62 * of 'msg'. Stores the type of the property in '*typep' and, if 'property' is
63 * nonnull, the entire property, including the header, in '*property'. Returns
64 * 0 if successful, otherwise an error code.
66 * This function pulls the property's stated size padded out to a multiple of
67 * 'alignment' bytes. The common case in OpenFlow is an 'alignment' of 8, so
68 * you can use ofputil_pull_property() for that case. */
70 ofputil_pull_property__(struct ofpbuf *msg, struct ofpbuf *property,
71 unsigned int alignment, uint16_t *typep)
73 struct ofp_prop_header *oph;
74 unsigned int padded_len;
77 if (ofpbuf_size(msg) < sizeof *oph) {
78 return OFPERR_OFPBPC_BAD_LEN;
81 oph = ofpbuf_data(msg);
82 len = ntohs(oph->len);
83 padded_len = ROUND_UP(len, alignment);
84 if (len < sizeof *oph || padded_len > ofpbuf_size(msg)) {
85 return OFPERR_OFPBPC_BAD_LEN;
88 *typep = ntohs(oph->type);
90 ofpbuf_use_const(property, ofpbuf_data(msg), len);
92 ofpbuf_pull(msg, padded_len);
96 /* Pulls a property, beginning with struct ofp_prop_header, from the beginning
97 * of 'msg'. Stores the type of the property in '*typep' and, if 'property' is
98 * nonnull, the entire property, including the header, in '*property'. Returns
99 * 0 if successful, otherwise an error code.
101 * This function pulls the property's stated size padded out to a multiple of
102 * 8 bytes, which is the common case for OpenFlow properties. */
104 ofputil_pull_property(struct ofpbuf *msg, struct ofpbuf *property,
107 return ofputil_pull_property__(msg, property, 8, typep);
110 static void PRINTF_FORMAT(2, 3)
111 log_property(bool loose, const char *message, ...)
113 enum vlog_level level = loose ? VLL_DBG : VLL_WARN;
114 if (!vlog_should_drop(THIS_MODULE, level, &bad_ofmsg_rl)) {
117 va_start(args, message);
118 vlog_valist(THIS_MODULE, level, message, args);
124 start_property(struct ofpbuf *msg, uint16_t type)
126 size_t start_ofs = ofpbuf_size(msg);
127 struct ofp_prop_header *oph;
129 oph = ofpbuf_put_uninit(msg, sizeof *oph);
130 oph->type = htons(type);
131 oph->len = htons(4); /* May be updated later by end_property(). */
136 end_property(struct ofpbuf *msg, size_t start_ofs)
138 struct ofp_prop_header *oph;
140 oph = ofpbuf_at_assert(msg, start_ofs, sizeof *oph);
141 oph->len = htons(ofpbuf_size(msg) - start_ofs);
142 ofpbuf_padto(msg, ROUND_UP(ofpbuf_size(msg), 8));
146 put_bitmap_properties(struct ofpbuf *msg, uint64_t bitmap)
148 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
149 start_property(msg, rightmost_1bit_idx(bitmap));
153 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
154 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
157 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
158 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
159 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
160 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
163 ofputil_wcbits_to_netmask(int wcbits)
166 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
169 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
170 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
171 * between 0 and 32 inclusive.
173 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
174 * still be in the valid range but isn't otherwise meaningful. */
176 ofputil_netmask_to_wcbits(ovs_be32 netmask)
178 return 32 - ip_count_cidr_bits(netmask);
181 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
182 * flow_wildcards in 'wc' for use in struct match. It is the caller's
183 * responsibility to handle the special case where the flow match's dl_vlan is
184 * set to OFP_VLAN_NONE. */
186 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
188 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 27);
190 /* Initialize most of wc. */
191 flow_wildcards_init_catchall(wc);
193 if (!(ofpfw & OFPFW10_IN_PORT)) {
194 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
197 if (!(ofpfw & OFPFW10_NW_TOS)) {
198 wc->masks.nw_tos |= IP_DSCP_MASK;
201 if (!(ofpfw & OFPFW10_NW_PROTO)) {
202 wc->masks.nw_proto = UINT8_MAX;
204 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
205 >> OFPFW10_NW_SRC_SHIFT);
206 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
207 >> OFPFW10_NW_DST_SHIFT);
209 if (!(ofpfw & OFPFW10_TP_SRC)) {
210 wc->masks.tp_src = OVS_BE16_MAX;
212 if (!(ofpfw & OFPFW10_TP_DST)) {
213 wc->masks.tp_dst = OVS_BE16_MAX;
216 if (!(ofpfw & OFPFW10_DL_SRC)) {
217 memset(wc->masks.dl_src, 0xff, ETH_ADDR_LEN);
219 if (!(ofpfw & OFPFW10_DL_DST)) {
220 memset(wc->masks.dl_dst, 0xff, ETH_ADDR_LEN);
222 if (!(ofpfw & OFPFW10_DL_TYPE)) {
223 wc->masks.dl_type = OVS_BE16_MAX;
227 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
228 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
230 if (!(ofpfw & OFPFW10_DL_VLAN)) {
231 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
235 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
237 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
240 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
242 /* Initialize match->wc. */
243 memset(&match->flow, 0, sizeof match->flow);
244 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
246 /* Initialize most of match->flow. */
247 match->flow.nw_src = ofmatch->nw_src;
248 match->flow.nw_dst = ofmatch->nw_dst;
249 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
250 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
251 match->flow.tp_src = ofmatch->tp_src;
252 match->flow.tp_dst = ofmatch->tp_dst;
253 memcpy(match->flow.dl_src, ofmatch->dl_src, ETH_ADDR_LEN);
254 memcpy(match->flow.dl_dst, ofmatch->dl_dst, ETH_ADDR_LEN);
255 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
256 match->flow.nw_proto = ofmatch->nw_proto;
258 /* Translate VLANs. */
259 if (!(ofpfw & OFPFW10_DL_VLAN) &&
260 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
261 /* Match only packets without 802.1Q header.
263 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
265 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
266 * because we can't have a specific PCP without an 802.1Q header.
267 * However, older versions of OVS treated this as matching packets
268 * withut an 802.1Q header, so we do here too. */
269 match->flow.vlan_tci = htons(0);
270 match->wc.masks.vlan_tci = htons(0xffff);
272 ovs_be16 vid, pcp, tci;
275 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
276 hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
278 tci = vid | pcp | htons(VLAN_CFI);
279 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
283 match_zero_wildcarded_fields(match);
286 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
288 ofputil_match_to_ofp10_match(const struct match *match,
289 struct ofp10_match *ofmatch)
291 const struct flow_wildcards *wc = &match->wc;
294 /* Figure out most OpenFlow wildcards. */
296 if (!wc->masks.in_port.ofp_port) {
297 ofpfw |= OFPFW10_IN_PORT;
299 if (!wc->masks.dl_type) {
300 ofpfw |= OFPFW10_DL_TYPE;
302 if (!wc->masks.nw_proto) {
303 ofpfw |= OFPFW10_NW_PROTO;
305 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
306 << OFPFW10_NW_SRC_SHIFT);
307 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
308 << OFPFW10_NW_DST_SHIFT);
309 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
310 ofpfw |= OFPFW10_NW_TOS;
312 if (!wc->masks.tp_src) {
313 ofpfw |= OFPFW10_TP_SRC;
315 if (!wc->masks.tp_dst) {
316 ofpfw |= OFPFW10_TP_DST;
318 if (eth_addr_is_zero(wc->masks.dl_src)) {
319 ofpfw |= OFPFW10_DL_SRC;
321 if (eth_addr_is_zero(wc->masks.dl_dst)) {
322 ofpfw |= OFPFW10_DL_DST;
325 /* Translate VLANs. */
326 ofmatch->dl_vlan = htons(0);
327 ofmatch->dl_vlan_pcp = 0;
328 if (match->wc.masks.vlan_tci == htons(0)) {
329 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
330 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
331 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
332 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
333 ofpfw |= OFPFW10_DL_VLAN_PCP;
335 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
336 ofpfw |= OFPFW10_DL_VLAN;
338 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
341 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
342 ofpfw |= OFPFW10_DL_VLAN_PCP;
344 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
348 /* Compose most of the match structure. */
349 ofmatch->wildcards = htonl(ofpfw);
350 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
351 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
352 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
353 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
354 ofmatch->nw_src = match->flow.nw_src;
355 ofmatch->nw_dst = match->flow.nw_dst;
356 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
357 ofmatch->nw_proto = match->flow.nw_proto;
358 ofmatch->tp_src = match->flow.tp_src;
359 ofmatch->tp_dst = match->flow.tp_dst;
360 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
361 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
365 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
366 uint16_t *padded_match_len)
368 struct ofp11_match_header *omh = ofpbuf_data(buf);
371 if (ofpbuf_size(buf) < sizeof *omh) {
372 return OFPERR_OFPBMC_BAD_LEN;
375 match_len = ntohs(omh->length);
377 switch (ntohs(omh->type)) {
378 case OFPMT_STANDARD: {
379 struct ofp11_match *om;
381 if (match_len != sizeof *om || ofpbuf_size(buf) < sizeof *om) {
382 return OFPERR_OFPBMC_BAD_LEN;
384 om = ofpbuf_pull(buf, sizeof *om);
385 if (padded_match_len) {
386 *padded_match_len = match_len;
388 return ofputil_match_from_ofp11_match(om, match);
392 if (padded_match_len) {
393 *padded_match_len = ROUND_UP(match_len, 8);
395 return oxm_pull_match(buf, match);
398 return OFPERR_OFPBMC_BAD_TYPE;
402 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
403 * Returns 0 if successful, otherwise an OFPERR_* value. */
405 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
408 uint16_t wc = ntohl(ofmatch->wildcards);
409 uint8_t dl_src_mask[ETH_ADDR_LEN];
410 uint8_t dl_dst_mask[ETH_ADDR_LEN];
411 bool ipv4, arp, rarp;
414 match_init_catchall(match);
416 if (!(wc & OFPFW11_IN_PORT)) {
420 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
422 return OFPERR_OFPBMC_BAD_VALUE;
424 match_set_in_port(match, ofp_port);
427 for (i = 0; i < ETH_ADDR_LEN; i++) {
428 dl_src_mask[i] = ~ofmatch->dl_src_mask[i];
430 match_set_dl_src_masked(match, ofmatch->dl_src, dl_src_mask);
432 for (i = 0; i < ETH_ADDR_LEN; i++) {
433 dl_dst_mask[i] = ~ofmatch->dl_dst_mask[i];
435 match_set_dl_dst_masked(match, ofmatch->dl_dst, dl_dst_mask);
437 if (!(wc & OFPFW11_DL_VLAN)) {
438 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
439 /* Match only packets without a VLAN tag. */
440 match->flow.vlan_tci = htons(0);
441 match->wc.masks.vlan_tci = OVS_BE16_MAX;
443 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
444 /* Match any packet with a VLAN tag regardless of VID. */
445 match->flow.vlan_tci = htons(VLAN_CFI);
446 match->wc.masks.vlan_tci = htons(VLAN_CFI);
447 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
448 /* Match only packets with the specified VLAN VID. */
449 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
450 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
453 return OFPERR_OFPBMC_BAD_VALUE;
456 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
457 if (ofmatch->dl_vlan_pcp <= 7) {
458 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
460 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
463 return OFPERR_OFPBMC_BAD_VALUE;
469 if (!(wc & OFPFW11_DL_TYPE)) {
470 match_set_dl_type(match,
471 ofputil_dl_type_from_openflow(ofmatch->dl_type));
474 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
475 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
476 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
478 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
479 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
481 return OFPERR_OFPBMC_BAD_VALUE;
484 match_set_nw_dscp(match, ofmatch->nw_tos);
487 if (ipv4 || arp || rarp) {
488 if (!(wc & OFPFW11_NW_PROTO)) {
489 match_set_nw_proto(match, ofmatch->nw_proto);
491 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
492 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
495 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
496 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
497 switch (match->flow.nw_proto) {
499 /* "A.2.3 Flow Match Structures" in OF1.1 says:
501 * The tp_src and tp_dst fields will be ignored unless the
502 * network protocol specified is as TCP, UDP or SCTP.
504 * but I'm pretty sure we should support ICMP too, otherwise
505 * that's a regression from OF1.0. */
506 if (!(wc & OFPFW11_TP_SRC)) {
507 uint16_t icmp_type = ntohs(ofmatch->tp_src);
508 if (icmp_type < 0x100) {
509 match_set_icmp_type(match, icmp_type);
511 return OFPERR_OFPBMC_BAD_FIELD;
514 if (!(wc & OFPFW11_TP_DST)) {
515 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
516 if (icmp_code < 0x100) {
517 match_set_icmp_code(match, icmp_code);
519 return OFPERR_OFPBMC_BAD_FIELD;
527 if (!(wc & (OFPFW11_TP_SRC))) {
528 match_set_tp_src(match, ofmatch->tp_src);
530 if (!(wc & (OFPFW11_TP_DST))) {
531 match_set_tp_dst(match, ofmatch->tp_dst);
536 /* OF1.1 says explicitly to ignore this. */
541 if (eth_type_mpls(match->flow.dl_type)) {
542 if (!(wc & OFPFW11_MPLS_LABEL)) {
543 match_set_mpls_label(match, 0, ofmatch->mpls_label);
545 if (!(wc & OFPFW11_MPLS_TC)) {
546 match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
550 match_set_metadata_masked(match, ofmatch->metadata,
551 ~ofmatch->metadata_mask);
556 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
558 ofputil_match_to_ofp11_match(const struct match *match,
559 struct ofp11_match *ofmatch)
564 memset(ofmatch, 0, sizeof *ofmatch);
565 ofmatch->omh.type = htons(OFPMT_STANDARD);
566 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
568 if (!match->wc.masks.in_port.ofp_port) {
569 wc |= OFPFW11_IN_PORT;
571 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
574 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
575 for (i = 0; i < ETH_ADDR_LEN; i++) {
576 ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i];
579 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
580 for (i = 0; i < ETH_ADDR_LEN; i++) {
581 ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i];
584 if (match->wc.masks.vlan_tci == htons(0)) {
585 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
586 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
587 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
588 ofmatch->dl_vlan = htons(OFPVID11_NONE);
589 wc |= OFPFW11_DL_VLAN_PCP;
591 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
592 ofmatch->dl_vlan = htons(OFPVID11_ANY);
594 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
597 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
598 wc |= OFPFW11_DL_VLAN_PCP;
600 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
604 if (!match->wc.masks.dl_type) {
605 wc |= OFPFW11_DL_TYPE;
607 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
610 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
611 wc |= OFPFW11_NW_TOS;
613 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
616 if (!match->wc.masks.nw_proto) {
617 wc |= OFPFW11_NW_PROTO;
619 ofmatch->nw_proto = match->flow.nw_proto;
622 ofmatch->nw_src = match->flow.nw_src;
623 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
624 ofmatch->nw_dst = match->flow.nw_dst;
625 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
627 if (!match->wc.masks.tp_src) {
628 wc |= OFPFW11_TP_SRC;
630 ofmatch->tp_src = match->flow.tp_src;
633 if (!match->wc.masks.tp_dst) {
634 wc |= OFPFW11_TP_DST;
636 ofmatch->tp_dst = match->flow.tp_dst;
639 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
640 wc |= OFPFW11_MPLS_LABEL;
642 ofmatch->mpls_label = htonl(mpls_lse_to_label(
643 match->flow.mpls_lse[0]));
646 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
647 wc |= OFPFW11_MPLS_TC;
649 ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
652 ofmatch->metadata = match->flow.metadata;
653 ofmatch->metadata_mask = ~match->wc.masks.metadata;
655 ofmatch->wildcards = htonl(wc);
658 /* Returns the "typical" length of a match for 'protocol', for use in
659 * estimating space to preallocate. */
661 ofputil_match_typical_len(enum ofputil_protocol protocol)
664 case OFPUTIL_P_OF10_STD:
665 case OFPUTIL_P_OF10_STD_TID:
666 return sizeof(struct ofp10_match);
668 case OFPUTIL_P_OF10_NXM:
669 case OFPUTIL_P_OF10_NXM_TID:
670 return NXM_TYPICAL_LEN;
672 case OFPUTIL_P_OF11_STD:
673 return sizeof(struct ofp11_match);
675 case OFPUTIL_P_OF12_OXM:
676 case OFPUTIL_P_OF13_OXM:
677 case OFPUTIL_P_OF14_OXM:
678 case OFPUTIL_P_OF15_OXM:
679 return NXM_TYPICAL_LEN;
686 /* Appends to 'b' an struct ofp11_match_header followed by a match that
687 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
688 * data appended out to a multiple of 8. 'protocol' must be one that is usable
689 * in OpenFlow 1.1 or later.
691 * This function can cause 'b''s data to be reallocated.
693 * Returns the number of bytes appended to 'b', excluding the padding. Never
696 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
697 enum ofputil_protocol protocol)
700 case OFPUTIL_P_OF10_STD:
701 case OFPUTIL_P_OF10_STD_TID:
702 case OFPUTIL_P_OF10_NXM:
703 case OFPUTIL_P_OF10_NXM_TID:
706 case OFPUTIL_P_OF11_STD: {
707 struct ofp11_match *om;
709 /* Make sure that no padding is needed. */
710 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
712 om = ofpbuf_put_uninit(b, sizeof *om);
713 ofputil_match_to_ofp11_match(match, om);
717 case OFPUTIL_P_OF12_OXM:
718 case OFPUTIL_P_OF13_OXM:
719 case OFPUTIL_P_OF14_OXM:
720 case OFPUTIL_P_OF15_OXM:
721 return oxm_put_match(b, match,
722 ofputil_protocol_to_ofp_version(protocol));
728 /* Given a 'dl_type' value in the format used in struct flow, returns the
729 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
732 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
734 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
735 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
739 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
740 * structure, returns the corresponding 'dl_type' value for use in struct
743 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
745 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
746 ? htons(FLOW_DL_TYPE_NONE)
752 struct proto_abbrev {
753 enum ofputil_protocol protocol;
757 /* Most users really don't care about some of the differences between
758 * protocols. These abbreviations help with that. */
759 static const struct proto_abbrev proto_abbrevs[] = {
760 { OFPUTIL_P_ANY, "any" },
761 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
762 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
763 { OFPUTIL_P_ANY_OXM, "OXM" },
765 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
767 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
776 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
778 /* Returns the set of ofputil_protocols that are supported with the given
779 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
780 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
781 * if 'version' is not supported or outside the valid range. */
782 enum ofputil_protocol
783 ofputil_protocols_from_ofp_version(enum ofp_version version)
787 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
789 return OFPUTIL_P_OF11_STD;
791 return OFPUTIL_P_OF12_OXM;
793 return OFPUTIL_P_OF13_OXM;
795 return OFPUTIL_P_OF14_OXM;
797 return OFPUTIL_P_OF15_OXM;
803 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
804 * connection that has negotiated the given 'version'. 'version' should
805 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
806 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
807 * outside the valid range. */
808 enum ofputil_protocol
809 ofputil_protocol_from_ofp_version(enum ofp_version version)
811 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
814 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
815 * etc.) that corresponds to 'protocol'. */
817 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
820 case OFPUTIL_P_OF10_STD:
821 case OFPUTIL_P_OF10_STD_TID:
822 case OFPUTIL_P_OF10_NXM:
823 case OFPUTIL_P_OF10_NXM_TID:
824 return OFP10_VERSION;
825 case OFPUTIL_P_OF11_STD:
826 return OFP11_VERSION;
827 case OFPUTIL_P_OF12_OXM:
828 return OFP12_VERSION;
829 case OFPUTIL_P_OF13_OXM:
830 return OFP13_VERSION;
831 case OFPUTIL_P_OF14_OXM:
832 return OFP14_VERSION;
833 case OFPUTIL_P_OF15_OXM:
834 return OFP15_VERSION;
840 /* Returns a bitmap of OpenFlow versions that are supported by at
841 * least one of the 'protocols'. */
843 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
847 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
848 enum ofputil_protocol protocol = rightmost_1bit(protocols);
850 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
856 /* Returns the set of protocols that are supported on top of the
857 * OpenFlow versions included in 'bitmap'. */
858 enum ofputil_protocol
859 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
861 enum ofputil_protocol protocols = 0;
863 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
864 enum ofp_version version = rightmost_1bit_idx(bitmap);
866 protocols |= ofputil_protocols_from_ofp_version(version);
872 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
875 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
877 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
880 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
881 * extension turned on or off if 'enable' is true or false, respectively.
883 * This extension is only useful for protocols whose "standard" version does
884 * not allow specific tables to be modified. In particular, this is true of
885 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
886 * specifies a table ID and so there is no need for such an extension. When
887 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
888 * extension, this function just returns its 'protocol' argument unchanged
889 * regardless of the value of 'enable'. */
890 enum ofputil_protocol
891 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
894 case OFPUTIL_P_OF10_STD:
895 case OFPUTIL_P_OF10_STD_TID:
896 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
898 case OFPUTIL_P_OF10_NXM:
899 case OFPUTIL_P_OF10_NXM_TID:
900 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
902 case OFPUTIL_P_OF11_STD:
903 return OFPUTIL_P_OF11_STD;
905 case OFPUTIL_P_OF12_OXM:
906 return OFPUTIL_P_OF12_OXM;
908 case OFPUTIL_P_OF13_OXM:
909 return OFPUTIL_P_OF13_OXM;
911 case OFPUTIL_P_OF14_OXM:
912 return OFPUTIL_P_OF14_OXM;
914 case OFPUTIL_P_OF15_OXM:
915 return OFPUTIL_P_OF15_OXM;
922 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
923 * some extension to a standard protocol version, the return value is the
924 * standard version of that protocol without any extension. If 'protocol' is a
925 * standard protocol version, returns 'protocol' unchanged. */
926 enum ofputil_protocol
927 ofputil_protocol_to_base(enum ofputil_protocol protocol)
929 return ofputil_protocol_set_tid(protocol, false);
932 /* Returns 'new_base' with any extensions taken from 'cur'. */
933 enum ofputil_protocol
934 ofputil_protocol_set_base(enum ofputil_protocol cur,
935 enum ofputil_protocol new_base)
937 bool tid = (cur & OFPUTIL_P_TID) != 0;
940 case OFPUTIL_P_OF10_STD:
941 case OFPUTIL_P_OF10_STD_TID:
942 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
944 case OFPUTIL_P_OF10_NXM:
945 case OFPUTIL_P_OF10_NXM_TID:
946 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
948 case OFPUTIL_P_OF11_STD:
949 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
951 case OFPUTIL_P_OF12_OXM:
952 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
954 case OFPUTIL_P_OF13_OXM:
955 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
957 case OFPUTIL_P_OF14_OXM:
958 return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
960 case OFPUTIL_P_OF15_OXM:
961 return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
968 /* Returns a string form of 'protocol', if a simple form exists (that is, if
969 * 'protocol' is either a single protocol or it is a combination of protocols
970 * that have a single abbreviation). Otherwise, returns NULL. */
972 ofputil_protocol_to_string(enum ofputil_protocol protocol)
974 const struct proto_abbrev *p;
976 /* Use a "switch" statement for single-bit names so that we get a compiler
977 * warning if we forget any. */
979 case OFPUTIL_P_OF10_NXM:
980 return "NXM-table_id";
982 case OFPUTIL_P_OF10_NXM_TID:
983 return "NXM+table_id";
985 case OFPUTIL_P_OF10_STD:
986 return "OpenFlow10-table_id";
988 case OFPUTIL_P_OF10_STD_TID:
989 return "OpenFlow10+table_id";
991 case OFPUTIL_P_OF11_STD:
994 case OFPUTIL_P_OF12_OXM:
995 return "OXM-OpenFlow12";
997 case OFPUTIL_P_OF13_OXM:
998 return "OXM-OpenFlow13";
1000 case OFPUTIL_P_OF14_OXM:
1001 return "OXM-OpenFlow14";
1003 case OFPUTIL_P_OF15_OXM:
1004 return "OXM-OpenFlow15";
1007 /* Check abbreviations. */
1008 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1009 if (protocol == p->protocol) {
1017 /* Returns a string that represents 'protocols'. The return value might be a
1018 * comma-separated list if 'protocols' doesn't have a simple name. The return
1019 * value is "none" if 'protocols' is 0.
1021 * The caller must free the returned string (with free()). */
1023 ofputil_protocols_to_string(enum ofputil_protocol protocols)
1027 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
1028 if (protocols == 0) {
1029 return xstrdup("none");
1034 const struct proto_abbrev *p;
1038 ds_put_char(&s, ',');
1041 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1042 if ((protocols & p->protocol) == p->protocol) {
1043 ds_put_cstr(&s, p->name);
1044 protocols &= ~p->protocol;
1049 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1050 enum ofputil_protocol bit = 1u << i;
1052 if (protocols & bit) {
1053 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
1062 return ds_steal_cstr(&s);
1065 static enum ofputil_protocol
1066 ofputil_protocol_from_string__(const char *s, size_t n)
1068 const struct proto_abbrev *p;
1071 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1072 enum ofputil_protocol bit = 1u << i;
1073 const char *name = ofputil_protocol_to_string(bit);
1075 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
1080 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1081 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
1089 /* Returns the nonempty set of protocols represented by 's', which can be a
1090 * single protocol name or abbreviation or a comma-separated list of them.
1092 * Aborts the program with an error message if 's' is invalid. */
1093 enum ofputil_protocol
1094 ofputil_protocols_from_string(const char *s)
1096 const char *orig_s = s;
1097 enum ofputil_protocol protocols;
1101 enum ofputil_protocol p;
1104 n = strcspn(s, ",");
1110 p = ofputil_protocol_from_string__(s, n);
1112 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
1120 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
1126 ofputil_version_from_string(const char *s)
1128 if (!strcasecmp(s, "OpenFlow10")) {
1129 return OFP10_VERSION;
1131 if (!strcasecmp(s, "OpenFlow11")) {
1132 return OFP11_VERSION;
1134 if (!strcasecmp(s, "OpenFlow12")) {
1135 return OFP12_VERSION;
1137 if (!strcasecmp(s, "OpenFlow13")) {
1138 return OFP13_VERSION;
1140 if (!strcasecmp(s, "OpenFlow14")) {
1141 return OFP14_VERSION;
1143 if (!strcasecmp(s, "OpenFlow15")) {
1144 return OFP15_VERSION;
1150 is_delimiter(unsigned char c)
1152 return isspace(c) || c == ',';
1156 ofputil_versions_from_string(const char *s)
1159 uint32_t bitmap = 0;
1166 if (is_delimiter(s[i])) {
1171 while (s[i + j] && !is_delimiter(s[i + j])) {
1174 key = xmemdup0(s + i, j);
1175 version = ofputil_version_from_string(key);
1177 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1180 bitmap |= 1u << version;
1188 ofputil_versions_from_strings(char ** const s, size_t count)
1190 uint32_t bitmap = 0;
1193 int version = ofputil_version_from_string(s[count]);
1195 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1197 bitmap |= 1u << version;
1205 ofputil_version_to_string(enum ofp_version ofp_version)
1207 switch (ofp_version) {
1209 return "OpenFlow10";
1211 return "OpenFlow11";
1213 return "OpenFlow12";
1215 return "OpenFlow13";
1217 return "OpenFlow14";
1219 return "OpenFlow15";
1226 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1228 switch (packet_in_format) {
1229 case NXPIF_OPENFLOW10:
1238 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1240 switch (packet_in_format) {
1241 case NXPIF_OPENFLOW10:
1242 return "openflow10";
1251 ofputil_packet_in_format_from_string(const char *s)
1253 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1254 : !strcmp(s, "nxm") ? NXPIF_NXM
1259 ofputil_format_version(struct ds *msg, enum ofp_version version)
1261 ds_put_format(msg, "0x%02x", version);
1265 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1267 ds_put_cstr(msg, ofputil_version_to_string(version));
1271 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1272 void (*format_version)(struct ds *msg,
1276 format_version(msg, raw_ctz(bitmap));
1277 bitmap = zero_rightmost_1bit(bitmap);
1279 ds_put_cstr(msg, ", ");
1285 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1287 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1291 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1293 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1297 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1298 uint32_t *allowed_versionsp)
1300 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1301 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1302 uint32_t allowed_versions;
1304 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1308 /* Only use the first 32-bit element of the bitmap as that is all the
1309 * current implementation supports. Subsequent elements are ignored which
1310 * should have no effect on session negotiation until Open vSwtich supports
1311 * wire-protocol versions greater than 31.
1313 allowed_versions = ntohl(bitmap[0]);
1315 if (allowed_versions & 1) {
1316 /* There's no OpenFlow version 0. */
1317 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1319 allowed_versions &= ~1u;
1322 if (!allowed_versions) {
1323 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1324 "version (between 0x01 and 0x1f)");
1328 *allowed_versionsp = allowed_versions;
1333 version_bitmap_from_version(uint8_t ofp_version)
1335 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1338 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1339 * the set of OpenFlow versions for which 'oh' announces support.
1341 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1342 * successful, and thus '*allowed_versions' is always initialized. However, it
1343 * returns false if 'oh' contains some data that could not be fully understood,
1344 * true if 'oh' was completely parsed. */
1346 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1351 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1352 ofpbuf_pull(&msg, sizeof *oh);
1354 *allowed_versions = version_bitmap_from_version(oh->version);
1355 while (ofpbuf_size(&msg)) {
1356 const struct ofp_hello_elem_header *oheh;
1359 if (ofpbuf_size(&msg) < sizeof *oheh) {
1363 oheh = ofpbuf_data(&msg);
1364 len = ntohs(oheh->length);
1365 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1369 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1370 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1378 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1379 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1381 should_send_version_bitmap(uint32_t allowed_versions)
1383 return !is_pow2((allowed_versions >> 1) + 1);
1386 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1387 * versions in the 'allowed_versions' bitmaps and returns the message. */
1389 ofputil_encode_hello(uint32_t allowed_versions)
1391 enum ofp_version ofp_version;
1394 ofp_version = leftmost_1bit_idx(allowed_versions);
1395 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1397 if (should_send_version_bitmap(allowed_versions)) {
1398 struct ofp_hello_elem_header *oheh;
1401 map_len = sizeof allowed_versions;
1402 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1403 oheh->type = htons(OFPHET_VERSIONBITMAP);
1404 oheh->length = htons(map_len + sizeof *oheh);
1405 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1407 ofpmsg_update_length(msg);
1413 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1414 * protocol is 'current', at least partly transitions the protocol to 'want'.
1415 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1416 * connection if the switch processes the returned message correctly. (If
1417 * '*next != want' then the caller will have to iterate.)
1419 * If 'current == want', or if it is not possible to transition from 'current'
1420 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1421 * protocol versions), returns NULL and stores 'current' in '*next'. */
1423 ofputil_encode_set_protocol(enum ofputil_protocol current,
1424 enum ofputil_protocol want,
1425 enum ofputil_protocol *next)
1427 enum ofp_version cur_version, want_version;
1428 enum ofputil_protocol cur_base, want_base;
1429 bool cur_tid, want_tid;
1431 cur_version = ofputil_protocol_to_ofp_version(current);
1432 want_version = ofputil_protocol_to_ofp_version(want);
1433 if (cur_version != want_version) {
1438 cur_base = ofputil_protocol_to_base(current);
1439 want_base = ofputil_protocol_to_base(want);
1440 if (cur_base != want_base) {
1441 *next = ofputil_protocol_set_base(current, want_base);
1443 switch (want_base) {
1444 case OFPUTIL_P_OF10_NXM:
1445 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1447 case OFPUTIL_P_OF10_STD:
1448 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1450 case OFPUTIL_P_OF11_STD:
1451 case OFPUTIL_P_OF12_OXM:
1452 case OFPUTIL_P_OF13_OXM:
1453 case OFPUTIL_P_OF14_OXM:
1454 case OFPUTIL_P_OF15_OXM:
1455 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1456 * verified above that we're not trying to change versions. */
1459 case OFPUTIL_P_OF10_STD_TID:
1460 case OFPUTIL_P_OF10_NXM_TID:
1465 cur_tid = (current & OFPUTIL_P_TID) != 0;
1466 want_tid = (want & OFPUTIL_P_TID) != 0;
1467 if (cur_tid != want_tid) {
1468 *next = ofputil_protocol_set_tid(current, want_tid);
1469 return ofputil_make_flow_mod_table_id(want_tid);
1472 ovs_assert(current == want);
1478 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1479 * format to 'nxff'. */
1481 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1483 struct nx_set_flow_format *sff;
1486 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1488 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1489 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1490 sff->format = htonl(nxff);
1495 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1497 enum ofputil_protocol
1498 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1500 switch (flow_format) {
1501 case NXFF_OPENFLOW10:
1502 return OFPUTIL_P_OF10_STD;
1505 return OFPUTIL_P_OF10_NXM;
1512 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1514 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1516 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1519 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1522 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1524 switch (flow_format) {
1525 case NXFF_OPENFLOW10:
1526 return "openflow10";
1535 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1536 enum nx_packet_in_format packet_in_format)
1538 struct nx_set_packet_in_format *spif;
1541 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1542 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1543 spif->format = htonl(packet_in_format);
1548 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1549 * extension on or off (according to 'flow_mod_table_id'). */
1551 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1553 struct nx_flow_mod_table_id *nfmti;
1556 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1557 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1558 nfmti->set = flow_mod_table_id;
1562 struct ofputil_flow_mod_flag {
1564 enum ofp_version min_version, max_version;
1565 enum ofputil_flow_mod_flags flag;
1568 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1569 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1570 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1571 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1573 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1574 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1575 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1580 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1581 enum ofp_flow_mod_command command,
1582 enum ofp_version version,
1583 enum ofputil_flow_mod_flags *flagsp)
1585 uint16_t raw_flags = ntohs(raw_flags_);
1586 const struct ofputil_flow_mod_flag *f;
1589 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1590 if (raw_flags & f->raw_flag
1591 && version >= f->min_version
1592 && (!f->max_version || version <= f->max_version)) {
1593 raw_flags &= ~f->raw_flag;
1598 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1601 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1602 * resets counters. */
1603 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1604 && command == OFPFC_ADD) {
1605 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1608 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1612 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1613 enum ofp_version version)
1615 const struct ofputil_flow_mod_flag *f;
1619 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1621 && version >= f->min_version
1622 && (!f->max_version || version <= f->max_version)) {
1623 raw_flags |= f->raw_flag;
1627 return htons(raw_flags);
1630 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1631 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1634 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1635 * The caller must initialize 'ofpacts' and retains ownership of it.
1636 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1638 * Does not validate the flow_mod actions. The caller should do that, with
1639 * ofpacts_check(). */
1641 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1642 const struct ofp_header *oh,
1643 enum ofputil_protocol protocol,
1644 struct ofpbuf *ofpacts,
1645 ofp_port_t max_port, uint8_t max_table)
1652 /* Ignored for non-delete actions */
1653 fm->delete_reason = OFPRR_DELETE;
1655 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1656 raw = ofpraw_pull_assert(&b);
1657 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1658 /* Standard OpenFlow 1.1+ flow_mod. */
1659 const struct ofp11_flow_mod *ofm;
1661 ofm = ofpbuf_pull(&b, sizeof *ofm);
1663 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1668 /* Translate the message. */
1669 fm->priority = ntohs(ofm->priority);
1670 if (ofm->command == OFPFC_ADD
1671 || (oh->version == OFP11_VERSION
1672 && (ofm->command == OFPFC_MODIFY ||
1673 ofm->command == OFPFC_MODIFY_STRICT)
1674 && ofm->cookie_mask == htonll(0))) {
1675 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1676 * not match on the cookie is treated as an "add" if there is no
1678 fm->cookie = htonll(0);
1679 fm->cookie_mask = htonll(0);
1680 fm->new_cookie = ofm->cookie;
1682 fm->cookie = ofm->cookie;
1683 fm->cookie_mask = ofm->cookie_mask;
1684 fm->new_cookie = OVS_BE64_MAX;
1686 fm->modify_cookie = false;
1687 fm->command = ofm->command;
1691 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1692 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1693 fm->table_id = ofm->table_id;
1694 if (fm->table_id == OFPTT_ALL
1695 && (oh->version == OFP11_VERSION
1696 || (ofm->command != OFPFC_DELETE &&
1697 ofm->command != OFPFC_DELETE_STRICT))) {
1698 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1701 fm->idle_timeout = ntohs(ofm->idle_timeout);
1702 fm->hard_timeout = ntohs(ofm->hard_timeout);
1703 fm->buffer_id = ntohl(ofm->buffer_id);
1704 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1709 fm->out_group = (ofm->command == OFPFC_DELETE ||
1710 ofm->command == OFPFC_DELETE_STRICT
1711 ? ntohl(ofm->out_group)
1713 raw_flags = ofm->flags;
1717 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1718 /* Standard OpenFlow 1.0 flow_mod. */
1719 const struct ofp10_flow_mod *ofm;
1721 /* Get the ofp10_flow_mod. */
1722 ofm = ofpbuf_pull(&b, sizeof *ofm);
1724 /* Translate the rule. */
1725 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1726 ofputil_normalize_match(&fm->match);
1728 /* OpenFlow 1.0 says that exact-match rules have to have the
1729 * highest possible priority. */
1730 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1731 ? ntohs(ofm->priority)
1734 /* Translate the message. */
1735 command = ntohs(ofm->command);
1736 fm->cookie = htonll(0);
1737 fm->cookie_mask = htonll(0);
1738 fm->new_cookie = ofm->cookie;
1739 fm->idle_timeout = ntohs(ofm->idle_timeout);
1740 fm->hard_timeout = ntohs(ofm->hard_timeout);
1741 fm->buffer_id = ntohl(ofm->buffer_id);
1742 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1743 fm->out_group = OFPG11_ANY;
1744 raw_flags = ofm->flags;
1745 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1746 /* Nicira extended flow_mod. */
1747 const struct nx_flow_mod *nfm;
1749 /* Dissect the message. */
1750 nfm = ofpbuf_pull(&b, sizeof *nfm);
1751 error = nx_pull_match(&b, ntohs(nfm->match_len),
1752 &fm->match, &fm->cookie, &fm->cookie_mask);
1757 /* Translate the message. */
1758 command = ntohs(nfm->command);
1759 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1760 /* Flow additions may only set a new cookie, not match an
1761 * existing cookie. */
1762 return OFPERR_NXBRC_NXM_INVALID;
1764 fm->priority = ntohs(nfm->priority);
1765 fm->new_cookie = nfm->cookie;
1766 fm->idle_timeout = ntohs(nfm->idle_timeout);
1767 fm->hard_timeout = ntohs(nfm->hard_timeout);
1768 fm->buffer_id = ntohl(nfm->buffer_id);
1769 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1770 fm->out_group = OFPG11_ANY;
1771 raw_flags = nfm->flags;
1776 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1777 if (protocol & OFPUTIL_P_TID) {
1778 fm->command = command & 0xff;
1779 fm->table_id = command >> 8;
1781 fm->command = command;
1782 fm->table_id = 0xff;
1786 error = ofpacts_pull_openflow_instructions(&b, ofpbuf_size(&b),
1787 oh->version, ofpacts);
1791 fm->ofpacts = ofpbuf_data(ofpacts);
1792 fm->ofpacts_len = ofpbuf_size(ofpacts);
1794 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1795 oh->version, &fm->flags);
1800 if (fm->flags & OFPUTIL_FF_EMERG) {
1801 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1802 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1804 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1805 * or hard_timeout is nonzero. Otherwise, there is no good error
1806 * code, so just state that the flow table is full. */
1807 return (fm->hard_timeout || fm->idle_timeout
1808 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1809 : OFPERR_OFPFMFC_TABLE_FULL);
1812 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1813 &fm->match.flow, max_port,
1814 fm->table_id, max_table, protocol);
1818 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1819 struct ofpbuf *bands)
1821 const struct ofp13_meter_band_header *ombh;
1822 struct ofputil_meter_band *mb;
1825 ombh = ofpbuf_try_pull(msg, len);
1827 return OFPERR_OFPBRC_BAD_LEN;
1830 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1831 size_t ombh_len = ntohs(ombh->len);
1832 /* All supported band types have the same length. */
1833 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1834 return OFPERR_OFPBRC_BAD_LEN;
1836 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1837 mb->type = ntohs(ombh->type);
1838 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1839 return OFPERR_OFPMMFC_BAD_BAND;
1841 mb->rate = ntohl(ombh->rate);
1842 mb->burst_size = ntohl(ombh->burst_size);
1843 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1844 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1847 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1848 (char *) ombh + ombh_len);
1851 return OFPERR_OFPBRC_BAD_LEN;
1858 ofputil_decode_meter_mod(const struct ofp_header *oh,
1859 struct ofputil_meter_mod *mm,
1860 struct ofpbuf *bands)
1862 const struct ofp13_meter_mod *omm;
1865 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1866 ofpraw_pull_assert(&b);
1867 omm = ofpbuf_pull(&b, sizeof *omm);
1869 /* Translate the message. */
1870 mm->command = ntohs(omm->command);
1871 if (mm->command != OFPMC13_ADD &&
1872 mm->command != OFPMC13_MODIFY &&
1873 mm->command != OFPMC13_DELETE) {
1874 return OFPERR_OFPMMFC_BAD_COMMAND;
1876 mm->meter.meter_id = ntohl(omm->meter_id);
1878 if (mm->command == OFPMC13_DELETE) {
1879 mm->meter.flags = 0;
1880 mm->meter.n_bands = 0;
1881 mm->meter.bands = NULL;
1885 mm->meter.flags = ntohs(omm->flags);
1886 if (mm->meter.flags & OFPMF13_KBPS &&
1887 mm->meter.flags & OFPMF13_PKTPS) {
1888 return OFPERR_OFPMMFC_BAD_FLAGS;
1890 mm->meter.bands = ofpbuf_data(bands);
1892 error = ofputil_pull_bands(&b, ofpbuf_size(&b), &mm->meter.n_bands, bands);
1901 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1903 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1904 *meter_id = ntohl(omr->meter_id);
1908 ofputil_encode_meter_request(enum ofp_version ofp_version,
1909 enum ofputil_meter_request_type type,
1917 case OFPUTIL_METER_CONFIG:
1918 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1920 case OFPUTIL_METER_STATS:
1921 raw = OFPRAW_OFPST13_METER_REQUEST;
1924 case OFPUTIL_METER_FEATURES:
1925 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1929 msg = ofpraw_alloc(raw, ofp_version, 0);
1931 if (type != OFPUTIL_METER_FEATURES) {
1932 struct ofp13_meter_multipart_request *omr;
1933 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1934 omr->meter_id = htonl(meter_id);
1940 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1945 for (n = 0; n < n_bands; ++n) {
1946 /* Currently all band types have same size. */
1947 struct ofp13_meter_band_dscp_remark *ombh;
1948 size_t ombh_len = sizeof *ombh;
1950 ombh = ofpbuf_put_zeros(msg, ombh_len);
1952 ombh->type = htons(mb->type);
1953 ombh->len = htons(ombh_len);
1954 ombh->rate = htonl(mb->rate);
1955 ombh->burst_size = htonl(mb->burst_size);
1956 ombh->prec_level = mb->prec_level;
1962 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1964 ofputil_append_meter_config(struct list *replies,
1965 const struct ofputil_meter_config *mc)
1967 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1968 size_t start_ofs = ofpbuf_size(msg);
1969 struct ofp13_meter_config *reply = ofpbuf_put_uninit(msg, sizeof *reply);
1970 reply->flags = htons(mc->flags);
1971 reply->meter_id = htonl(mc->meter_id);
1973 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1975 reply->length = htons(ofpbuf_size(msg) - start_ofs);
1977 ofpmp_postappend(replies, start_ofs);
1980 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1982 ofputil_append_meter_stats(struct list *replies,
1983 const struct ofputil_meter_stats *ms)
1985 struct ofp13_meter_stats *reply;
1989 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
1990 reply = ofpmp_append(replies, len);
1992 reply->meter_id = htonl(ms->meter_id);
1993 reply->len = htons(len);
1994 memset(reply->pad, 0, sizeof reply->pad);
1995 reply->flow_count = htonl(ms->flow_count);
1996 reply->packet_in_count = htonll(ms->packet_in_count);
1997 reply->byte_in_count = htonll(ms->byte_in_count);
1998 reply->duration_sec = htonl(ms->duration_sec);
1999 reply->duration_nsec = htonl(ms->duration_nsec);
2001 for (n = 0; n < ms->n_bands; ++n) {
2002 const struct ofputil_meter_band_stats *src = &ms->bands[n];
2003 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
2005 dst->packet_band_count = htonll(src->packet_count);
2006 dst->byte_band_count = htonll(src->byte_count);
2010 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
2011 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
2012 * 'bands'. The caller must have initialized 'bands' and retains ownership of
2013 * it across the call.
2015 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
2016 * message. Calling this function multiple times for a single 'msg' iterates
2017 * through the replies. 'bands' is cleared for each reply.
2019 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2020 * otherwise a positive errno value. */
2022 ofputil_decode_meter_config(struct ofpbuf *msg,
2023 struct ofputil_meter_config *mc,
2024 struct ofpbuf *bands)
2026 const struct ofp13_meter_config *omc;
2029 /* Pull OpenFlow headers for the first call. */
2031 ofpraw_pull_assert(msg);
2034 if (!ofpbuf_size(msg)) {
2038 omc = ofpbuf_try_pull(msg, sizeof *omc);
2040 VLOG_WARN_RL(&bad_ofmsg_rl,
2041 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2043 return OFPERR_OFPBRC_BAD_LEN;
2046 ofpbuf_clear(bands);
2047 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2048 &mc->n_bands, bands);
2052 mc->meter_id = ntohl(omc->meter_id);
2053 mc->flags = ntohs(omc->flags);
2054 mc->bands = ofpbuf_data(bands);
2060 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2061 struct ofpbuf *bands)
2063 const struct ofp13_meter_band_stats *ombs;
2064 struct ofputil_meter_band_stats *mbs;
2067 ombs = ofpbuf_try_pull(msg, len);
2069 return OFPERR_OFPBRC_BAD_LEN;
2072 n = len / sizeof *ombs;
2073 if (len != n * sizeof *ombs) {
2074 return OFPERR_OFPBRC_BAD_LEN;
2077 mbs = ofpbuf_put_uninit(bands, len);
2079 for (i = 0; i < n; ++i) {
2080 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2081 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2087 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2088 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2089 * decoded into 'bands'.
2091 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2092 * message. Calling this function multiple times for a single 'msg' iterates
2093 * through the replies. 'bands' is cleared for each reply.
2095 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2096 * otherwise a positive errno value. */
2098 ofputil_decode_meter_stats(struct ofpbuf *msg,
2099 struct ofputil_meter_stats *ms,
2100 struct ofpbuf *bands)
2102 const struct ofp13_meter_stats *oms;
2105 /* Pull OpenFlow headers for the first call. */
2107 ofpraw_pull_assert(msg);
2110 if (!ofpbuf_size(msg)) {
2114 oms = ofpbuf_try_pull(msg, sizeof *oms);
2116 VLOG_WARN_RL(&bad_ofmsg_rl,
2117 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2119 return OFPERR_OFPBRC_BAD_LEN;
2122 ofpbuf_clear(bands);
2123 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2124 &ms->n_bands, bands);
2128 ms->meter_id = ntohl(oms->meter_id);
2129 ms->flow_count = ntohl(oms->flow_count);
2130 ms->packet_in_count = ntohll(oms->packet_in_count);
2131 ms->byte_in_count = ntohll(oms->byte_in_count);
2132 ms->duration_sec = ntohl(oms->duration_sec);
2133 ms->duration_nsec = ntohl(oms->duration_nsec);
2134 ms->bands = ofpbuf_data(bands);
2140 ofputil_decode_meter_features(const struct ofp_header *oh,
2141 struct ofputil_meter_features *mf)
2143 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2145 mf->max_meters = ntohl(omf->max_meter);
2146 mf->band_types = ntohl(omf->band_types);
2147 mf->capabilities = ntohl(omf->capabilities);
2148 mf->max_bands = omf->max_bands;
2149 mf->max_color = omf->max_color;
2153 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2154 const struct ofp_header *request)
2156 struct ofpbuf *reply;
2157 struct ofp13_meter_features *omf;
2159 reply = ofpraw_alloc_stats_reply(request, 0);
2160 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2162 omf->max_meter = htonl(mf->max_meters);
2163 omf->band_types = htonl(mf->band_types);
2164 omf->capabilities = htonl(mf->capabilities);
2165 omf->max_bands = mf->max_bands;
2166 omf->max_color = mf->max_color;
2172 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2173 const struct ofputil_meter_mod *mm)
2177 struct ofp13_meter_mod *omm;
2179 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2180 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2181 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2182 omm->command = htons(mm->command);
2183 if (mm->command != OFPMC13_DELETE) {
2184 omm->flags = htons(mm->meter.flags);
2186 omm->meter_id = htonl(mm->meter.meter_id);
2188 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2190 ofpmsg_update_length(msg);
2195 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2196 enum ofputil_protocol protocol)
2198 return htons(protocol & OFPUTIL_P_TID
2199 ? (fm->command & 0xff) | (fm->table_id << 8)
2203 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2204 * 'protocol' and returns the message. */
2206 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2207 enum ofputil_protocol protocol)
2209 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2210 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2214 case OFPUTIL_P_OF11_STD:
2215 case OFPUTIL_P_OF12_OXM:
2216 case OFPUTIL_P_OF13_OXM:
2217 case OFPUTIL_P_OF14_OXM:
2218 case OFPUTIL_P_OF15_OXM: {
2219 struct ofp11_flow_mod *ofm;
2222 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2223 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2224 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2225 if ((protocol == OFPUTIL_P_OF11_STD
2226 && (fm->command == OFPFC_MODIFY ||
2227 fm->command == OFPFC_MODIFY_STRICT)
2228 && fm->cookie_mask == htonll(0))
2229 || fm->command == OFPFC_ADD) {
2230 ofm->cookie = fm->new_cookie;
2232 ofm->cookie = fm->cookie & fm->cookie_mask;
2234 ofm->cookie_mask = fm->cookie_mask;
2235 if (fm->table_id != OFPTT_ALL
2236 || (protocol != OFPUTIL_P_OF11_STD
2237 && (fm->command == OFPFC_DELETE ||
2238 fm->command == OFPFC_DELETE_STRICT))) {
2239 ofm->table_id = fm->table_id;
2243 ofm->command = fm->command;
2244 ofm->idle_timeout = htons(fm->idle_timeout);
2245 ofm->hard_timeout = htons(fm->hard_timeout);
2246 ofm->priority = htons(fm->priority);
2247 ofm->buffer_id = htonl(fm->buffer_id);
2248 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2249 ofm->out_group = htonl(fm->out_group);
2250 ofm->flags = raw_flags;
2251 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2252 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2257 case OFPUTIL_P_OF10_STD:
2258 case OFPUTIL_P_OF10_STD_TID: {
2259 struct ofp10_flow_mod *ofm;
2261 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2263 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2264 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2265 ofm->cookie = fm->new_cookie;
2266 ofm->command = ofputil_tid_command(fm, protocol);
2267 ofm->idle_timeout = htons(fm->idle_timeout);
2268 ofm->hard_timeout = htons(fm->hard_timeout);
2269 ofm->priority = htons(fm->priority);
2270 ofm->buffer_id = htonl(fm->buffer_id);
2271 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2272 ofm->flags = raw_flags;
2273 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2278 case OFPUTIL_P_OF10_NXM:
2279 case OFPUTIL_P_OF10_NXM_TID: {
2280 struct nx_flow_mod *nfm;
2283 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2284 NXM_TYPICAL_LEN + fm->ofpacts_len);
2285 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2286 nfm->command = ofputil_tid_command(fm, protocol);
2287 nfm->cookie = fm->new_cookie;
2288 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2289 nfm = ofpbuf_l3(msg);
2290 nfm->idle_timeout = htons(fm->idle_timeout);
2291 nfm->hard_timeout = htons(fm->hard_timeout);
2292 nfm->priority = htons(fm->priority);
2293 nfm->buffer_id = htonl(fm->buffer_id);
2294 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2295 nfm->flags = raw_flags;
2296 nfm->match_len = htons(match_len);
2297 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2306 ofpmsg_update_length(msg);
2311 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2312 const struct ofp10_flow_stats_request *ofsr,
2315 fsr->aggregate = aggregate;
2316 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2317 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2318 fsr->out_group = OFPG11_ANY;
2319 fsr->table_id = ofsr->table_id;
2320 fsr->cookie = fsr->cookie_mask = htonll(0);
2326 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2327 struct ofpbuf *b, bool aggregate)
2329 const struct ofp11_flow_stats_request *ofsr;
2332 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2333 fsr->aggregate = aggregate;
2334 fsr->table_id = ofsr->table_id;
2335 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2339 fsr->out_group = ntohl(ofsr->out_group);
2340 fsr->cookie = ofsr->cookie;
2341 fsr->cookie_mask = ofsr->cookie_mask;
2342 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2351 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2352 struct ofpbuf *b, bool aggregate)
2354 const struct nx_flow_stats_request *nfsr;
2357 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2358 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2359 &fsr->cookie, &fsr->cookie_mask);
2363 if (ofpbuf_size(b)) {
2364 return OFPERR_OFPBRC_BAD_LEN;
2367 fsr->aggregate = aggregate;
2368 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2369 fsr->out_group = OFPG11_ANY;
2370 fsr->table_id = nfsr->table_id;
2375 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2376 * 'port', suitable for OpenFlow version 'version'. */
2378 ofputil_encode_queue_get_config_request(enum ofp_version version,
2381 struct ofpbuf *request;
2383 if (version == OFP10_VERSION) {
2384 struct ofp10_queue_get_config_request *qgcr10;
2386 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2388 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2389 qgcr10->port = htons(ofp_to_u16(port));
2391 struct ofp11_queue_get_config_request *qgcr11;
2393 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2395 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2396 qgcr11->port = ofputil_port_to_ofp11(port);
2402 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2403 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2406 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2409 const struct ofp10_queue_get_config_request *qgcr10;
2410 const struct ofp11_queue_get_config_request *qgcr11;
2414 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2415 raw = ofpraw_pull_assert(&b);
2417 switch ((int) raw) {
2418 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2419 qgcr10 = ofpbuf_data(&b);
2420 *port = u16_to_ofp(ntohs(qgcr10->port));
2423 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2424 qgcr11 = ofpbuf_data(&b);
2425 return ofputil_port_from_ofp11(qgcr11->port, port);
2431 /* Constructs and returns the beginning of a reply to
2432 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2433 * individual queues with ofputil_append_queue_get_config_reply(). */
2435 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2437 struct ofp10_queue_get_config_reply *qgcr10;
2438 struct ofp11_queue_get_config_reply *qgcr11;
2439 struct ofpbuf *reply;
2445 error = ofputil_decode_queue_get_config_request(oh, &port);
2448 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2449 raw = ofpraw_pull_assert(&b);
2451 switch ((int) raw) {
2452 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2453 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2455 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2456 qgcr10->port = htons(ofp_to_u16(port));
2459 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2460 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2462 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2463 qgcr11->port = ofputil_port_to_ofp11(port);
2474 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2477 if (rate != UINT16_MAX) {
2478 struct ofp_queue_prop_rate *oqpr;
2480 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2481 oqpr->prop_header.property = htons(property);
2482 oqpr->prop_header.len = htons(sizeof *oqpr);
2483 oqpr->rate = htons(rate);
2487 /* Appends a queue description for 'queue_id' to the
2488 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2490 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2491 const struct ofputil_queue_config *oqc)
2493 const struct ofp_header *oh = ofpbuf_data(reply);
2494 size_t start_ofs, len_ofs;
2497 start_ofs = ofpbuf_size(reply);
2498 if (oh->version < OFP12_VERSION) {
2499 struct ofp10_packet_queue *opq10;
2501 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2502 opq10->queue_id = htonl(oqc->queue_id);
2503 len_ofs = (char *) &opq10->len - (char *) ofpbuf_data(reply);
2505 struct ofp11_queue_get_config_reply *qgcr11;
2506 struct ofp12_packet_queue *opq12;
2509 qgcr11 = ofpbuf_l3(reply);
2510 port = qgcr11->port;
2512 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2514 opq12->queue_id = htonl(oqc->queue_id);
2515 len_ofs = (char *) &opq12->len - (char *) ofpbuf_data(reply);
2518 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2519 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2521 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2522 *len = htons(ofpbuf_size(reply) - start_ofs);
2525 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2526 * stores in '*port' the port that the reply is about. The caller may call
2527 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2528 * queues included in the reply. Returns 0 if successful, otherwise an
2531 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2533 const struct ofp10_queue_get_config_reply *qgcr10;
2534 const struct ofp11_queue_get_config_reply *qgcr11;
2537 raw = ofpraw_pull_assert(reply);
2538 switch ((int) raw) {
2539 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2540 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2541 *port = u16_to_ofp(ntohs(qgcr10->port));
2544 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2545 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2546 return ofputil_port_from_ofp11(qgcr11->port, port);
2553 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2555 const struct ofp_queue_prop_rate *oqpr;
2557 if (hdr->len == htons(sizeof *oqpr)) {
2558 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2559 *rate = ntohs(oqpr->rate);
2562 return OFPERR_OFPBRC_BAD_LEN;
2566 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2567 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2568 * must already have pulled off the main header.
2570 * This function returns EOF if the last queue has already been decoded, 0 if a
2571 * queue was successfully decoded into '*queue', or an ofperr if there was a
2572 * problem decoding 'reply'. */
2574 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2575 struct ofputil_queue_config *queue)
2577 const struct ofp_header *oh;
2578 unsigned int opq_len;
2581 if (!ofpbuf_size(reply)) {
2585 queue->min_rate = UINT16_MAX;
2586 queue->max_rate = UINT16_MAX;
2589 if (oh->version < OFP12_VERSION) {
2590 const struct ofp10_packet_queue *opq10;
2592 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2594 return OFPERR_OFPBRC_BAD_LEN;
2596 queue->queue_id = ntohl(opq10->queue_id);
2597 len = ntohs(opq10->len);
2598 opq_len = sizeof *opq10;
2600 const struct ofp12_packet_queue *opq12;
2602 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2604 return OFPERR_OFPBRC_BAD_LEN;
2606 queue->queue_id = ntohl(opq12->queue_id);
2607 len = ntohs(opq12->len);
2608 opq_len = sizeof *opq12;
2611 if (len < opq_len || len > ofpbuf_size(reply) + opq_len || len % 8) {
2612 return OFPERR_OFPBRC_BAD_LEN;
2617 const struct ofp_queue_prop_header *hdr;
2618 unsigned int property;
2619 unsigned int prop_len;
2620 enum ofperr error = 0;
2622 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2623 prop_len = ntohs(hdr->len);
2624 if (prop_len < sizeof *hdr || prop_len > ofpbuf_size(reply) || prop_len % 8) {
2625 return OFPERR_OFPBRC_BAD_LEN;
2628 property = ntohs(hdr->property);
2630 case OFPQT_MIN_RATE:
2631 error = parse_queue_rate(hdr, &queue->min_rate);
2634 case OFPQT_MAX_RATE:
2635 error = parse_queue_rate(hdr, &queue->max_rate);
2639 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2646 ofpbuf_pull(reply, prop_len);
2652 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2653 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2654 * successful, otherwise an OpenFlow error code. */
2656 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2657 const struct ofp_header *oh)
2662 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2663 raw = ofpraw_pull_assert(&b);
2664 switch ((int) raw) {
2665 case OFPRAW_OFPST10_FLOW_REQUEST:
2666 return ofputil_decode_ofpst10_flow_request(fsr, ofpbuf_data(&b), false);
2668 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2669 return ofputil_decode_ofpst10_flow_request(fsr, ofpbuf_data(&b), true);
2671 case OFPRAW_OFPST11_FLOW_REQUEST:
2672 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2674 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2675 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2677 case OFPRAW_NXST_FLOW_REQUEST:
2678 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2680 case OFPRAW_NXST_AGGREGATE_REQUEST:
2681 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2684 /* Hey, the caller lied. */
2689 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2690 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2691 * 'protocol', and returns the message. */
2693 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2694 enum ofputil_protocol protocol)
2700 case OFPUTIL_P_OF11_STD:
2701 case OFPUTIL_P_OF12_OXM:
2702 case OFPUTIL_P_OF13_OXM:
2703 case OFPUTIL_P_OF14_OXM:
2704 case OFPUTIL_P_OF15_OXM: {
2705 struct ofp11_flow_stats_request *ofsr;
2707 raw = (fsr->aggregate
2708 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2709 : OFPRAW_OFPST11_FLOW_REQUEST);
2710 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2711 ofputil_match_typical_len(protocol));
2712 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2713 ofsr->table_id = fsr->table_id;
2714 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2715 ofsr->out_group = htonl(fsr->out_group);
2716 ofsr->cookie = fsr->cookie;
2717 ofsr->cookie_mask = fsr->cookie_mask;
2718 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2722 case OFPUTIL_P_OF10_STD:
2723 case OFPUTIL_P_OF10_STD_TID: {
2724 struct ofp10_flow_stats_request *ofsr;
2726 raw = (fsr->aggregate
2727 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2728 : OFPRAW_OFPST10_FLOW_REQUEST);
2729 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2730 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2731 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2732 ofsr->table_id = fsr->table_id;
2733 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2737 case OFPUTIL_P_OF10_NXM:
2738 case OFPUTIL_P_OF10_NXM_TID: {
2739 struct nx_flow_stats_request *nfsr;
2742 raw = (fsr->aggregate
2743 ? OFPRAW_NXST_AGGREGATE_REQUEST
2744 : OFPRAW_NXST_FLOW_REQUEST);
2745 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2746 ofpbuf_put_zeros(msg, sizeof *nfsr);
2747 match_len = nx_put_match(msg, &fsr->match,
2748 fsr->cookie, fsr->cookie_mask);
2750 nfsr = ofpbuf_l3(msg);
2751 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2752 nfsr->match_len = htons(match_len);
2753 nfsr->table_id = fsr->table_id;
2764 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2765 * ofputil_flow_stats in 'fs'.
2767 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2768 * OpenFlow message. Calling this function multiple times for a single 'msg'
2769 * iterates through the replies. The caller must initially leave 'msg''s layer
2770 * pointers null and not modify them between calls.
2772 * Most switches don't send the values needed to populate fs->idle_age and
2773 * fs->hard_age, so those members will usually be set to 0. If the switch from
2774 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2775 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2776 * 'idle_age' and 'hard_age' members in 'fs'.
2778 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2779 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2780 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2782 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2783 * otherwise a positive errno value. */
2785 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2787 bool flow_age_extension,
2788 struct ofpbuf *ofpacts)
2790 const struct ofp_header *oh;
2791 size_t instructions_len;
2796 ? ofpraw_decode(&raw, msg->frame)
2797 : ofpraw_pull(&raw, msg));
2803 if (!ofpbuf_size(msg)) {
2805 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2806 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2807 const struct ofp11_flow_stats *ofs;
2809 uint16_t padded_match_len;
2811 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2813 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2814 "bytes at end", ofpbuf_size(msg));
2818 length = ntohs(ofs->length);
2819 if (length < sizeof *ofs) {
2820 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2821 "length %"PRIuSIZE, length);
2825 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2826 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2829 instructions_len = length - sizeof *ofs - padded_match_len;
2831 fs->priority = ntohs(ofs->priority);
2832 fs->table_id = ofs->table_id;
2833 fs->duration_sec = ntohl(ofs->duration_sec);
2834 fs->duration_nsec = ntohl(ofs->duration_nsec);
2835 fs->idle_timeout = ntohs(ofs->idle_timeout);
2836 fs->hard_timeout = ntohs(ofs->hard_timeout);
2837 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2838 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2848 fs->cookie = ofs->cookie;
2849 fs->packet_count = ntohll(ofs->packet_count);
2850 fs->byte_count = ntohll(ofs->byte_count);
2851 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2852 const struct ofp10_flow_stats *ofs;
2855 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2857 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2858 "bytes at end", ofpbuf_size(msg));
2862 length = ntohs(ofs->length);
2863 if (length < sizeof *ofs) {
2864 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2865 "length %"PRIuSIZE, length);
2868 instructions_len = length - sizeof *ofs;
2870 fs->cookie = get_32aligned_be64(&ofs->cookie);
2871 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2872 fs->priority = ntohs(ofs->priority);
2873 fs->table_id = ofs->table_id;
2874 fs->duration_sec = ntohl(ofs->duration_sec);
2875 fs->duration_nsec = ntohl(ofs->duration_nsec);
2876 fs->idle_timeout = ntohs(ofs->idle_timeout);
2877 fs->hard_timeout = ntohs(ofs->hard_timeout);
2880 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2881 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2883 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2884 const struct nx_flow_stats *nfs;
2885 size_t match_len, length;
2887 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2889 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2890 "bytes at end", ofpbuf_size(msg));
2894 length = ntohs(nfs->length);
2895 match_len = ntohs(nfs->match_len);
2896 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2897 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2898 "claims invalid length %"PRIuSIZE, match_len, length);
2901 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2904 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2906 fs->cookie = nfs->cookie;
2907 fs->table_id = nfs->table_id;
2908 fs->duration_sec = ntohl(nfs->duration_sec);
2909 fs->duration_nsec = ntohl(nfs->duration_nsec);
2910 fs->priority = ntohs(nfs->priority);
2911 fs->idle_timeout = ntohs(nfs->idle_timeout);
2912 fs->hard_timeout = ntohs(nfs->hard_timeout);
2915 if (flow_age_extension) {
2916 if (nfs->idle_age) {
2917 fs->idle_age = ntohs(nfs->idle_age) - 1;
2919 if (nfs->hard_age) {
2920 fs->hard_age = ntohs(nfs->hard_age) - 1;
2923 fs->packet_count = ntohll(nfs->packet_count);
2924 fs->byte_count = ntohll(nfs->byte_count);
2930 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
2932 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2935 fs->ofpacts = ofpbuf_data(ofpacts);
2936 fs->ofpacts_len = ofpbuf_size(ofpacts);
2941 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2943 * We use this in situations where OVS internally uses UINT64_MAX to mean
2944 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2946 unknown_to_zero(uint64_t count)
2948 return count != UINT64_MAX ? count : 0;
2951 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2952 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2953 * have been initialized with ofpmp_init(). */
2955 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2956 struct list *replies)
2958 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2959 size_t start_ofs = ofpbuf_size(reply);
2960 enum ofp_version version = ofpmp_version(replies);
2961 enum ofpraw raw = ofpmp_decode_raw(replies);
2963 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2964 struct ofp11_flow_stats *ofs;
2966 ofpbuf_put_uninit(reply, sizeof *ofs);
2967 oxm_put_match(reply, &fs->match, version);
2968 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
2971 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2972 ofs->length = htons(ofpbuf_size(reply) - start_ofs);
2973 ofs->table_id = fs->table_id;
2975 ofs->duration_sec = htonl(fs->duration_sec);
2976 ofs->duration_nsec = htonl(fs->duration_nsec);
2977 ofs->priority = htons(fs->priority);
2978 ofs->idle_timeout = htons(fs->idle_timeout);
2979 ofs->hard_timeout = htons(fs->hard_timeout);
2980 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2981 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
2985 memset(ofs->pad2, 0, sizeof ofs->pad2);
2986 ofs->cookie = fs->cookie;
2987 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
2988 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
2989 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2990 struct ofp10_flow_stats *ofs;
2992 ofpbuf_put_uninit(reply, sizeof *ofs);
2993 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
2995 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2996 ofs->length = htons(ofpbuf_size(reply) - start_ofs);
2997 ofs->table_id = fs->table_id;
2999 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3000 ofs->duration_sec = htonl(fs->duration_sec);
3001 ofs->duration_nsec = htonl(fs->duration_nsec);
3002 ofs->priority = htons(fs->priority);
3003 ofs->idle_timeout = htons(fs->idle_timeout);
3004 ofs->hard_timeout = htons(fs->hard_timeout);
3005 memset(ofs->pad2, 0, sizeof ofs->pad2);
3006 put_32aligned_be64(&ofs->cookie, fs->cookie);
3007 put_32aligned_be64(&ofs->packet_count,
3008 htonll(unknown_to_zero(fs->packet_count)));
3009 put_32aligned_be64(&ofs->byte_count,
3010 htonll(unknown_to_zero(fs->byte_count)));
3011 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3012 struct nx_flow_stats *nfs;
3015 ofpbuf_put_uninit(reply, sizeof *nfs);
3016 match_len = nx_put_match(reply, &fs->match, 0, 0);
3017 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3019 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3020 nfs->length = htons(ofpbuf_size(reply) - start_ofs);
3021 nfs->table_id = fs->table_id;
3023 nfs->duration_sec = htonl(fs->duration_sec);
3024 nfs->duration_nsec = htonl(fs->duration_nsec);
3025 nfs->priority = htons(fs->priority);
3026 nfs->idle_timeout = htons(fs->idle_timeout);
3027 nfs->hard_timeout = htons(fs->hard_timeout);
3028 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3029 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3031 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3032 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3034 nfs->match_len = htons(match_len);
3035 nfs->cookie = fs->cookie;
3036 nfs->packet_count = htonll(fs->packet_count);
3037 nfs->byte_count = htonll(fs->byte_count);
3042 ofpmp_postappend(replies, start_ofs);
3045 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3046 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3048 ofputil_encode_aggregate_stats_reply(
3049 const struct ofputil_aggregate_stats *stats,
3050 const struct ofp_header *request)
3052 struct ofp_aggregate_stats_reply *asr;
3053 uint64_t packet_count;
3054 uint64_t byte_count;
3058 ofpraw_decode(&raw, request);
3059 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3060 packet_count = unknown_to_zero(stats->packet_count);
3061 byte_count = unknown_to_zero(stats->byte_count);
3063 packet_count = stats->packet_count;
3064 byte_count = stats->byte_count;
3067 msg = ofpraw_alloc_stats_reply(request, 0);
3068 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3069 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3070 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3071 asr->flow_count = htonl(stats->flow_count);
3077 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3078 const struct ofp_header *reply)
3080 struct ofp_aggregate_stats_reply *asr;
3083 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3084 ofpraw_pull_assert(&msg);
3086 asr = ofpbuf_l3(&msg);
3087 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3088 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3089 stats->flow_count = ntohl(asr->flow_count);
3094 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3095 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3096 * an OpenFlow error code. */
3098 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3099 const struct ofp_header *oh)
3104 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3105 raw = ofpraw_pull_assert(&b);
3106 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3107 const struct ofp12_flow_removed *ofr;
3110 ofr = ofpbuf_pull(&b, sizeof *ofr);
3112 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3117 fr->priority = ntohs(ofr->priority);
3118 fr->cookie = ofr->cookie;
3119 fr->reason = ofr->reason;
3120 fr->table_id = ofr->table_id;
3121 fr->duration_sec = ntohl(ofr->duration_sec);
3122 fr->duration_nsec = ntohl(ofr->duration_nsec);
3123 fr->idle_timeout = ntohs(ofr->idle_timeout);
3124 fr->hard_timeout = ntohs(ofr->hard_timeout);
3125 fr->packet_count = ntohll(ofr->packet_count);
3126 fr->byte_count = ntohll(ofr->byte_count);
3127 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3128 const struct ofp10_flow_removed *ofr;
3130 ofr = ofpbuf_pull(&b, sizeof *ofr);
3132 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3133 fr->priority = ntohs(ofr->priority);
3134 fr->cookie = ofr->cookie;
3135 fr->reason = ofr->reason;
3137 fr->duration_sec = ntohl(ofr->duration_sec);
3138 fr->duration_nsec = ntohl(ofr->duration_nsec);
3139 fr->idle_timeout = ntohs(ofr->idle_timeout);
3140 fr->hard_timeout = 0;
3141 fr->packet_count = ntohll(ofr->packet_count);
3142 fr->byte_count = ntohll(ofr->byte_count);
3143 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3144 struct nx_flow_removed *nfr;
3147 nfr = ofpbuf_pull(&b, sizeof *nfr);
3148 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3153 if (ofpbuf_size(&b)) {
3154 return OFPERR_OFPBRC_BAD_LEN;
3157 fr->priority = ntohs(nfr->priority);
3158 fr->cookie = nfr->cookie;
3159 fr->reason = nfr->reason;
3160 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3161 fr->duration_sec = ntohl(nfr->duration_sec);
3162 fr->duration_nsec = ntohl(nfr->duration_nsec);
3163 fr->idle_timeout = ntohs(nfr->idle_timeout);
3164 fr->hard_timeout = 0;
3165 fr->packet_count = ntohll(nfr->packet_count);
3166 fr->byte_count = ntohll(nfr->byte_count);
3174 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3175 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3178 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3179 enum ofputil_protocol protocol)
3182 enum ofp_flow_removed_reason reason = fr->reason;
3184 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3185 reason = OFPRR_DELETE;
3189 case OFPUTIL_P_OF11_STD:
3190 case OFPUTIL_P_OF12_OXM:
3191 case OFPUTIL_P_OF13_OXM:
3192 case OFPUTIL_P_OF14_OXM:
3193 case OFPUTIL_P_OF15_OXM: {
3194 struct ofp12_flow_removed *ofr;
3196 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3197 ofputil_protocol_to_ofp_version(protocol),
3199 ofputil_match_typical_len(protocol));
3200 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3201 ofr->cookie = fr->cookie;
3202 ofr->priority = htons(fr->priority);
3203 ofr->reason = reason;
3204 ofr->table_id = fr->table_id;
3205 ofr->duration_sec = htonl(fr->duration_sec);
3206 ofr->duration_nsec = htonl(fr->duration_nsec);
3207 ofr->idle_timeout = htons(fr->idle_timeout);
3208 ofr->hard_timeout = htons(fr->hard_timeout);
3209 ofr->packet_count = htonll(fr->packet_count);
3210 ofr->byte_count = htonll(fr->byte_count);
3211 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3215 case OFPUTIL_P_OF10_STD:
3216 case OFPUTIL_P_OF10_STD_TID: {
3217 struct ofp10_flow_removed *ofr;
3219 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3221 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3222 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3223 ofr->cookie = fr->cookie;
3224 ofr->priority = htons(fr->priority);
3225 ofr->reason = reason;
3226 ofr->duration_sec = htonl(fr->duration_sec);
3227 ofr->duration_nsec = htonl(fr->duration_nsec);
3228 ofr->idle_timeout = htons(fr->idle_timeout);
3229 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3230 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3234 case OFPUTIL_P_OF10_NXM:
3235 case OFPUTIL_P_OF10_NXM_TID: {
3236 struct nx_flow_removed *nfr;
3239 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3240 htonl(0), NXM_TYPICAL_LEN);
3241 ofpbuf_put_zeros(msg, sizeof *nfr);
3242 match_len = nx_put_match(msg, &fr->match, 0, 0);
3244 nfr = ofpbuf_l3(msg);
3245 nfr->cookie = fr->cookie;
3246 nfr->priority = htons(fr->priority);
3247 nfr->reason = reason;
3248 nfr->table_id = fr->table_id + 1;
3249 nfr->duration_sec = htonl(fr->duration_sec);
3250 nfr->duration_nsec = htonl(fr->duration_nsec);
3251 nfr->idle_timeout = htons(fr->idle_timeout);
3252 nfr->match_len = htons(match_len);
3253 nfr->packet_count = htonll(fr->packet_count);
3254 nfr->byte_count = htonll(fr->byte_count);
3266 ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin,
3267 struct match *match, struct ofpbuf *b)
3269 pin->packet = ofpbuf_data(b);
3270 pin->packet_len = ofpbuf_size(b);
3272 pin->fmd.in_port = match->flow.in_port.ofp_port;
3273 pin->fmd.tun_id = match->flow.tunnel.tun_id;
3274 pin->fmd.tun_src = match->flow.tunnel.ip_src;
3275 pin->fmd.tun_dst = match->flow.tunnel.ip_dst;
3276 pin->fmd.metadata = match->flow.metadata;
3277 memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs);
3278 pin->fmd.pkt_mark = match->flow.pkt_mark;
3282 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3283 const struct ofp_header *oh)
3288 memset(pin, 0, sizeof *pin);
3289 pin->cookie = OVS_BE64_MAX;
3291 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3292 raw = ofpraw_pull_assert(&b);
3293 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3294 const struct ofp13_packet_in *opi;
3297 size_t packet_in_size;
3299 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3300 packet_in_size = sizeof (struct ofp12_packet_in);
3302 packet_in_size = sizeof (struct ofp13_packet_in);
3305 opi = ofpbuf_pull(&b, packet_in_size);
3306 error = oxm_pull_match_loose(&b, &match);
3311 if (!ofpbuf_try_pull(&b, 2)) {
3312 return OFPERR_OFPBRC_BAD_LEN;
3315 pin->reason = opi->pi.reason;
3316 pin->table_id = opi->pi.table_id;
3317 pin->buffer_id = ntohl(opi->pi.buffer_id);
3318 pin->total_len = ntohs(opi->pi.total_len);
3320 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3321 pin->cookie = opi->cookie;
3324 ofputil_decode_packet_in_finish(pin, &match, &b);
3325 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3326 const struct ofp10_packet_in *opi;
3328 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3330 pin->packet = opi->data;
3331 pin->packet_len = ofpbuf_size(&b);
3333 pin->fmd.in_port = u16_to_ofp(ntohs(opi->in_port));
3334 pin->reason = opi->reason;
3335 pin->buffer_id = ntohl(opi->buffer_id);
3336 pin->total_len = ntohs(opi->total_len);
3337 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3338 const struct ofp11_packet_in *opi;
3341 opi = ofpbuf_pull(&b, sizeof *opi);
3343 pin->packet = ofpbuf_data(&b);
3344 pin->packet_len = ofpbuf_size(&b);
3346 pin->buffer_id = ntohl(opi->buffer_id);
3347 error = ofputil_port_from_ofp11(opi->in_port, &pin->fmd.in_port);
3351 pin->total_len = ntohs(opi->total_len);
3352 pin->reason = opi->reason;
3353 pin->table_id = opi->table_id;
3354 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3355 const struct nx_packet_in *npi;
3359 npi = ofpbuf_pull(&b, sizeof *npi);
3360 error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL,
3366 if (!ofpbuf_try_pull(&b, 2)) {
3367 return OFPERR_OFPBRC_BAD_LEN;
3370 pin->reason = npi->reason;
3371 pin->table_id = npi->table_id;
3372 pin->cookie = npi->cookie;
3374 pin->buffer_id = ntohl(npi->buffer_id);
3375 pin->total_len = ntohs(npi->total_len);
3377 ofputil_decode_packet_in_finish(pin, &match, &b);
3386 ofputil_packet_in_to_match(const struct ofputil_packet_in *pin,
3387 struct match *match)
3391 match_init_catchall(match);
3392 if (pin->fmd.tun_id != htonll(0)) {
3393 match_set_tun_id(match, pin->fmd.tun_id);
3395 if (pin->fmd.tun_src != htonl(0)) {
3396 match_set_tun_src(match, pin->fmd.tun_src);
3398 if (pin->fmd.tun_dst != htonl(0)) {
3399 match_set_tun_dst(match, pin->fmd.tun_dst);
3401 if (pin->fmd.metadata != htonll(0)) {
3402 match_set_metadata(match, pin->fmd.metadata);
3405 for (i = 0; i < FLOW_N_REGS; i++) {
3406 if (pin->fmd.regs[i]) {
3407 match_set_reg(match, i, pin->fmd.regs[i]);
3411 if (pin->fmd.pkt_mark != 0) {
3412 match_set_pkt_mark(match, pin->fmd.pkt_mark);
3415 match_set_in_port(match, pin->fmd.in_port);
3418 static struct ofpbuf *
3419 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3421 struct ofp10_packet_in *opi;
3422 struct ofpbuf *packet;
3424 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3425 htonl(0), pin->packet_len);
3426 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3427 opi->total_len = htons(pin->total_len);
3428 opi->in_port = htons(ofp_to_u16(pin->fmd.in_port));
3429 opi->reason = pin->reason;
3430 opi->buffer_id = htonl(pin->buffer_id);
3432 ofpbuf_put(packet, pin->packet, pin->packet_len);
3437 static struct ofpbuf *
3438 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3440 struct nx_packet_in *npi;
3441 struct ofpbuf *packet;
3445 ofputil_packet_in_to_match(pin, &match);
3447 /* The final argument is just an estimate of the space required. */
3448 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3449 htonl(0), (sizeof(struct flow_metadata) * 2
3450 + 2 + pin->packet_len));
3451 ofpbuf_put_zeros(packet, sizeof *npi);
3452 match_len = nx_put_match(packet, &match, 0, 0);
3453 ofpbuf_put_zeros(packet, 2);
3454 ofpbuf_put(packet, pin->packet, pin->packet_len);
3456 npi = ofpbuf_l3(packet);
3457 npi->buffer_id = htonl(pin->buffer_id);
3458 npi->total_len = htons(pin->total_len);
3459 npi->reason = pin->reason;
3460 npi->table_id = pin->table_id;
3461 npi->cookie = pin->cookie;
3462 npi->match_len = htons(match_len);
3467 static struct ofpbuf *
3468 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3470 struct ofp11_packet_in *opi;
3471 struct ofpbuf *packet;
3473 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3474 htonl(0), pin->packet_len);
3475 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3476 opi->buffer_id = htonl(pin->buffer_id);
3477 opi->in_port = ofputil_port_to_ofp11(pin->fmd.in_port);
3478 opi->in_phy_port = opi->in_port;
3479 opi->total_len = htons(pin->total_len);
3480 opi->reason = pin->reason;
3481 opi->table_id = pin->table_id;
3483 ofpbuf_put(packet, pin->packet, pin->packet_len);
3488 static struct ofpbuf *
3489 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3490 enum ofputil_protocol protocol)
3492 struct ofp13_packet_in *opi;
3494 enum ofpraw packet_in_raw;
3495 enum ofp_version packet_in_version;
3496 size_t packet_in_size;
3497 struct ofpbuf *packet;
3499 if (protocol == OFPUTIL_P_OF12_OXM) {
3500 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3501 packet_in_version = OFP12_VERSION;
3502 packet_in_size = sizeof (struct ofp12_packet_in);
3504 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3505 packet_in_version = OFP13_VERSION;
3506 packet_in_size = sizeof (struct ofp13_packet_in);
3509 ofputil_packet_in_to_match(pin, &match);
3511 /* The final argument is just an estimate of the space required. */
3512 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3513 htonl(0), (sizeof(struct flow_metadata) * 2
3514 + 2 + pin->packet_len));
3515 ofpbuf_put_zeros(packet, packet_in_size);
3516 oxm_put_match(packet, &match, ofputil_protocol_to_ofp_version(protocol));
3517 ofpbuf_put_zeros(packet, 2);
3518 ofpbuf_put(packet, pin->packet, pin->packet_len);
3520 opi = ofpbuf_l3(packet);
3521 opi->pi.buffer_id = htonl(pin->buffer_id);
3522 opi->pi.total_len = htons(pin->total_len);
3523 opi->pi.reason = pin->reason;
3524 opi->pi.table_id = pin->table_id;
3525 if (protocol == OFPUTIL_P_OF13_OXM) {
3526 opi->cookie = pin->cookie;
3532 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3533 * in the format specified by 'packet_in_format'. */
3535 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3536 enum ofputil_protocol protocol,
3537 enum nx_packet_in_format packet_in_format)
3539 struct ofpbuf *packet;
3542 case OFPUTIL_P_OF10_STD:
3543 case OFPUTIL_P_OF10_STD_TID:
3544 case OFPUTIL_P_OF10_NXM:
3545 case OFPUTIL_P_OF10_NXM_TID:
3546 packet = (packet_in_format == NXPIF_NXM
3547 ? ofputil_encode_nx_packet_in(pin)
3548 : ofputil_encode_ofp10_packet_in(pin));
3551 case OFPUTIL_P_OF11_STD:
3552 packet = ofputil_encode_ofp11_packet_in(pin);
3555 case OFPUTIL_P_OF12_OXM:
3556 case OFPUTIL_P_OF13_OXM:
3557 case OFPUTIL_P_OF14_OXM:
3558 case OFPUTIL_P_OF15_OXM:
3559 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3566 ofpmsg_update_length(packet);
3570 /* Returns a string form of 'reason'. The return value is either a statically
3571 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3572 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3574 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3575 char *reasonbuf, size_t bufsize)
3582 case OFPR_INVALID_TTL:
3583 return "invalid_ttl";
3585 case OFPR_N_REASONS:
3587 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3593 ofputil_packet_in_reason_from_string(const char *s,
3594 enum ofp_packet_in_reason *reason)
3598 for (i = 0; i < OFPR_N_REASONS; i++) {
3599 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3600 const char *reason_s;
3602 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3604 if (!strcasecmp(s, reason_s)) {
3612 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3615 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3616 * message's actions. The caller must initialize 'ofpacts' and retains
3617 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3619 * Returns 0 if successful, otherwise an OFPERR_* value. */
3621 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3622 const struct ofp_header *oh,
3623 struct ofpbuf *ofpacts)
3628 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3629 raw = ofpraw_pull_assert(&b);
3631 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3633 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3635 po->buffer_id = ntohl(opo->buffer_id);
3636 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3641 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3642 oh->version, ofpacts);
3646 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3648 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3650 po->buffer_id = ntohl(opo->buffer_id);
3651 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3653 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3654 oh->version, ofpacts);
3662 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3663 && po->in_port != OFPP_LOCAL
3664 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3665 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3667 return OFPERR_OFPBRC_BAD_PORT;
3670 po->ofpacts = ofpbuf_data(ofpacts);
3671 po->ofpacts_len = ofpbuf_size(ofpacts);
3673 if (po->buffer_id == UINT32_MAX) {
3674 po->packet = ofpbuf_data(&b);
3675 po->packet_len = ofpbuf_size(&b);
3684 /* ofputil_phy_port */
3686 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3687 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3688 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3689 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3690 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3691 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3692 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3693 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3695 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3696 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3697 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3698 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3699 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3700 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3702 static enum netdev_features
3703 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3705 uint32_t ofp10 = ntohl(ofp10_);
3706 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3710 netdev_port_features_to_ofp10(enum netdev_features features)
3712 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3715 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3716 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3717 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3718 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3719 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3720 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3721 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3722 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3723 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3724 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3725 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3726 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3727 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3728 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3729 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3730 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3732 static enum netdev_features
3733 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3735 return ntohl(ofp11) & 0xffff;
3739 netdev_port_features_to_ofp11(enum netdev_features features)
3741 return htonl(features & 0xffff);
3745 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3746 const struct ofp10_phy_port *opp)
3748 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3749 memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN);
3750 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3752 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3753 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3755 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3756 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3757 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3758 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3760 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3761 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3767 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3768 const struct ofp11_port *op)
3772 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3776 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3777 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3779 pp->config = ntohl(op->config) & OFPPC11_ALL;
3780 pp->state = ntohl(op->state) & OFPPS11_ALL;
3782 pp->curr = netdev_port_features_from_ofp11(op->curr);
3783 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3784 pp->supported = netdev_port_features_from_ofp11(op->supported);
3785 pp->peer = netdev_port_features_from_ofp11(op->peer);
3787 pp->curr_speed = ntohl(op->curr_speed);
3788 pp->max_speed = ntohl(op->max_speed);
3794 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3795 struct ofputil_phy_port *pp)
3797 struct ofp14_port_desc_prop_ethernet *eth = ofpbuf_data(payload);
3799 if (ofpbuf_size(payload) != sizeof *eth) {
3800 return OFPERR_OFPBPC_BAD_LEN;
3803 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3804 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3805 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3806 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3808 pp->curr_speed = ntohl(eth->curr_speed);
3809 pp->max_speed = ntohl(eth->max_speed);
3815 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3817 struct ofpbuf properties;
3818 struct ofp14_port *op;
3822 op = ofpbuf_try_pull(msg, sizeof *op);
3824 return OFPERR_OFPBRC_BAD_LEN;
3827 len = ntohs(op->length);
3828 if (len < sizeof *op || len - sizeof *op > ofpbuf_size(msg)) {
3829 return OFPERR_OFPBRC_BAD_LEN;
3832 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3834 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3838 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3839 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3841 pp->config = ntohl(op->config) & OFPPC11_ALL;
3842 pp->state = ntohl(op->state) & OFPPS11_ALL;
3844 while (ofpbuf_size(&properties) > 0) {
3845 struct ofpbuf payload;
3849 error = ofputil_pull_property(&properties, &payload, &type);
3855 case OFPPDPT14_ETHERNET:
3856 error = parse_ofp14_port_ethernet_property(&payload, pp);
3860 log_property(true, "unknown port property %"PRIu16, type);
3874 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3875 struct ofp10_phy_port *opp)
3877 memset(opp, 0, sizeof *opp);
3879 opp->port_no = htons(ofp_to_u16(pp->port_no));
3880 memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3881 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3883 opp->config = htonl(pp->config & OFPPC10_ALL);
3884 opp->state = htonl(pp->state & OFPPS10_ALL);
3886 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3887 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3888 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3889 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3893 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3894 struct ofp11_port *op)
3896 memset(op, 0, sizeof *op);
3898 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3899 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3900 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3902 op->config = htonl(pp->config & OFPPC11_ALL);
3903 op->state = htonl(pp->state & OFPPS11_ALL);
3905 op->curr = netdev_port_features_to_ofp11(pp->curr);
3906 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3907 op->supported = netdev_port_features_to_ofp11(pp->supported);
3908 op->peer = netdev_port_features_to_ofp11(pp->peer);
3910 op->curr_speed = htonl(pp->curr_speed);
3911 op->max_speed = htonl(pp->max_speed);
3915 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3918 struct ofp14_port *op;
3919 struct ofp14_port_desc_prop_ethernet *eth;
3921 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3923 op = ofpbuf_put_zeros(b, sizeof *op);
3924 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3925 op->length = htons(sizeof *op + sizeof *eth);
3926 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3927 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3928 op->config = htonl(pp->config & OFPPC11_ALL);
3929 op->state = htonl(pp->state & OFPPS11_ALL);
3931 eth = ofpbuf_put_zeros(b, sizeof *eth);
3932 eth->type = htons(OFPPDPT14_ETHERNET);
3933 eth->length = htons(sizeof *eth);
3934 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3935 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3936 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3937 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3938 eth->curr_speed = htonl(pp->curr_speed);
3939 eth->max_speed = htonl(pp->max_speed);
3943 ofputil_put_phy_port(enum ofp_version ofp_version,
3944 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3946 switch (ofp_version) {
3947 case OFP10_VERSION: {
3948 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3949 ofputil_encode_ofp10_phy_port(pp, opp);
3955 case OFP13_VERSION: {
3956 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3957 ofputil_encode_ofp11_port(pp, op);
3963 ofputil_put_ofp14_port(pp, b);
3972 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
3978 ofpbuf_use_const(&b, request, ntohs(request->length));
3979 raw = ofpraw_pull_assert(&b);
3980 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
3983 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
3984 ovs_be32 *ofp11_port;
3986 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
3987 return ofputil_port_from_ofp11(*ofp11_port, port);
3994 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
3997 struct ofpbuf *request;
3998 ovs_be32 ofp11_port;
4000 switch (ofp_version) {
4006 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4011 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4013 ofp11_port = ofputil_port_to_ofp11(port);
4014 ofpbuf_put(request, &ofp11_port, sizeof ofp11_port);
4025 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4026 struct list *replies)
4028 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4029 size_t start_ofs = ofpbuf_size(reply);
4031 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4032 ofpmp_postappend(replies, start_ofs);
4035 /* ofputil_switch_features */
4037 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4038 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4039 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4040 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4041 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4042 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4043 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4044 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4047 ofputil_capabilities_mask(enum ofp_version ofp_version)
4049 /* Handle capabilities whose bit is unique for all Open Flow versions */
4050 switch (ofp_version) {
4053 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4058 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4060 /* Caller needs to check osf->header.version itself */
4065 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4066 * abstract representation in '*features'. Initializes '*b' to iterate over
4067 * the OpenFlow port structures following 'osf' with later calls to
4068 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4069 * OFPERR_* value. */
4071 ofputil_decode_switch_features(const struct ofp_header *oh,
4072 struct ofputil_switch_features *features,
4075 const struct ofp_switch_features *osf;
4078 ofpbuf_use_const(b, oh, ntohs(oh->length));
4079 raw = ofpraw_pull_assert(b);
4081 osf = ofpbuf_pull(b, sizeof *osf);
4082 features->datapath_id = ntohll(osf->datapath_id);
4083 features->n_buffers = ntohl(osf->n_buffers);
4084 features->n_tables = osf->n_tables;
4085 features->auxiliary_id = 0;
4087 features->capabilities = ntohl(osf->capabilities) &
4088 ofputil_capabilities_mask(oh->version);
4090 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4091 if (osf->capabilities & htonl(OFPC10_STP)) {
4092 features->capabilities |= OFPUTIL_C_STP;
4094 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4096 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4097 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4098 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4099 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4101 features->ofpacts = 0;
4102 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4103 features->auxiliary_id = osf->auxiliary_id;
4106 return OFPERR_OFPBRC_BAD_VERSION;
4112 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4113 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4114 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4116 * Given a buffer 'b' that contains a Features Reply message, this message
4117 * checks if it contains a complete list of the switch's ports. Returns true,
4118 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4119 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4122 * When this function returns false, the caller should send an OFPST_PORT_DESC
4123 * stats request to get the ports. */
4125 ofputil_switch_features_has_ports(struct ofpbuf *b)
4127 struct ofp_header *oh = ofpbuf_data(b);
4128 size_t phy_port_size;
4130 if (oh->version >= OFP13_VERSION) {
4131 /* OpenFlow 1.3+ never has ports in the feature reply. */
4135 phy_port_size = (oh->version == OFP10_VERSION
4136 ? sizeof(struct ofp10_phy_port)
4137 : sizeof(struct ofp11_port));
4138 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4139 /* There's room for additional ports in the feature reply.
4140 * Assume that the list is complete. */
4144 /* The feature reply has no room for more ports. Probably the list is
4145 * truncated. Drop the ports and tell the caller to retrieve them with
4146 * OFPST_PORT_DESC. */
4147 ofpbuf_set_size(b, sizeof *oh + sizeof(struct ofp_switch_features));
4148 ofpmsg_update_length(b);
4152 /* Returns a buffer owned by the caller that encodes 'features' in the format
4153 * required by 'protocol' with the given 'xid'. The caller should append port
4154 * information to the buffer with subsequent calls to
4155 * ofputil_put_switch_features_port(). */
4157 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4158 enum ofputil_protocol protocol, ovs_be32 xid)
4160 struct ofp_switch_features *osf;
4162 enum ofp_version version;
4165 version = ofputil_protocol_to_ofp_version(protocol);
4168 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4172 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4177 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4182 b = ofpraw_alloc_xid(raw, version, xid, 0);
4183 osf = ofpbuf_put_zeros(b, sizeof *osf);
4184 osf->datapath_id = htonll(features->datapath_id);
4185 osf->n_buffers = htonl(features->n_buffers);
4186 osf->n_tables = features->n_tables;
4188 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4189 osf->capabilities = htonl(features->capabilities &
4190 ofputil_capabilities_mask(version));
4193 if (features->capabilities & OFPUTIL_C_STP) {
4194 osf->capabilities |= htonl(OFPC10_STP);
4196 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4202 osf->auxiliary_id = features->auxiliary_id;
4206 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4207 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4217 /* Encodes 'pp' into the format required by the switch_features message already
4218 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4219 * and appends the encoded version to 'b'. */
4221 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4224 const struct ofp_header *oh = ofpbuf_data(b);
4226 if (oh->version < OFP13_VERSION) {
4227 /* Try adding a port description to the message, but drop it again if
4228 * the buffer overflows. (This possibility for overflow is why
4229 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4230 size_t start_ofs = ofpbuf_size(b);
4231 ofputil_put_phy_port(oh->version, pp, b);
4232 if (ofpbuf_size(b) > UINT16_MAX) {
4233 ofpbuf_set_size(b, start_ofs);
4238 /* ofputil_port_status */
4240 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4241 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4243 ofputil_decode_port_status(const struct ofp_header *oh,
4244 struct ofputil_port_status *ps)
4246 const struct ofp_port_status *ops;
4250 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4251 ofpraw_pull_assert(&b);
4252 ops = ofpbuf_pull(&b, sizeof *ops);
4254 if (ops->reason != OFPPR_ADD &&
4255 ops->reason != OFPPR_DELETE &&
4256 ops->reason != OFPPR_MODIFY) {
4257 return OFPERR_NXBRC_BAD_REASON;
4259 ps->reason = ops->reason;
4261 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4262 ovs_assert(retval != EOF);
4266 /* Converts the abstract form of a "port status" message in '*ps' into an
4267 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4268 * a buffer owned by the caller. */
4270 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4271 enum ofputil_protocol protocol)
4273 struct ofp_port_status *ops;
4275 enum ofp_version version;
4278 version = ofputil_protocol_to_ofp_version(protocol);
4281 raw = OFPRAW_OFPT10_PORT_STATUS;
4287 raw = OFPRAW_OFPT11_PORT_STATUS;
4292 raw = OFPRAW_OFPT14_PORT_STATUS;
4299 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4300 ops = ofpbuf_put_zeros(b, sizeof *ops);
4301 ops->reason = ps->reason;
4302 ofputil_put_phy_port(version, &ps->desc, b);
4303 ofpmsg_update_length(b);
4307 /* ofputil_port_mod */
4310 parse_port_mod_ethernet_property(struct ofpbuf *property,
4311 struct ofputil_port_mod *pm)
4313 struct ofp14_port_mod_prop_ethernet *eth = ofpbuf_data(property);
4315 if (ofpbuf_size(property) != sizeof *eth) {
4316 return OFPERR_OFPBRC_BAD_LEN;
4319 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4323 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4324 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4326 ofputil_decode_port_mod(const struct ofp_header *oh,
4327 struct ofputil_port_mod *pm, bool loose)
4332 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4333 raw = ofpraw_pull_assert(&b);
4335 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4336 const struct ofp10_port_mod *opm = ofpbuf_data(&b);
4338 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4339 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4340 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4341 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4342 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4343 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4344 const struct ofp11_port_mod *opm = ofpbuf_data(&b);
4347 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4352 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4353 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4354 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4355 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4356 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4357 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4360 memset(pm, 0, sizeof *pm);
4362 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4367 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4368 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4369 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4371 while (ofpbuf_size(&b) > 0) {
4372 struct ofpbuf property;
4376 error = ofputil_pull_property(&b, &property, &type);
4382 case OFPPMPT14_ETHERNET:
4383 error = parse_port_mod_ethernet_property(&property, pm);
4387 log_property(loose, "unknown port_mod property %"PRIu16, type);
4390 } else if (type == OFPPMPT14_EXPERIMENTER) {
4391 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4393 error = OFPERR_OFPBRC_BAD_TYPE;
4403 return OFPERR_OFPBRC_BAD_TYPE;
4406 pm->config &= pm->mask;
4410 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4411 * message suitable for 'protocol', and returns that encoded form in a buffer
4412 * owned by the caller. */
4414 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4415 enum ofputil_protocol protocol)
4417 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4420 switch (ofp_version) {
4421 case OFP10_VERSION: {
4422 struct ofp10_port_mod *opm;
4424 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4425 opm = ofpbuf_put_zeros(b, sizeof *opm);
4426 opm->port_no = htons(ofp_to_u16(pm->port_no));
4427 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4428 opm->config = htonl(pm->config & OFPPC10_ALL);
4429 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4430 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4436 case OFP13_VERSION: {
4437 struct ofp11_port_mod *opm;
4439 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4440 opm = ofpbuf_put_zeros(b, sizeof *opm);
4441 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4442 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4443 opm->config = htonl(pm->config & OFPPC11_ALL);
4444 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4445 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4449 case OFP15_VERSION: {
4450 struct ofp14_port_mod_prop_ethernet *eth;
4451 struct ofp14_port_mod *opm;
4453 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4454 opm = ofpbuf_put_zeros(b, sizeof *opm);
4455 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4456 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4457 opm->config = htonl(pm->config & OFPPC11_ALL);
4458 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4460 if (pm->advertise) {
4461 eth = ofpbuf_put_zeros(b, sizeof *eth);
4462 eth->type = htons(OFPPMPT14_ETHERNET);
4463 eth->length = htons(sizeof *eth);
4464 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4475 /* Table features. */
4478 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4483 error = ofputil_pull_property(msg, payload, typep);
4484 if (payload && !error) {
4485 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4491 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4496 while (ofpbuf_size(payload) > 0) {
4500 error = ofputil_pull_property__(payload, NULL, 1, &type);
4504 if (type < CHAR_BIT * sizeof types) {
4505 types |= 1u << type;
4509 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4514 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4517 while (ofpbuf_size(payload) > 0) {
4518 enum ovs_instruction_type inst;
4522 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4523 * It seems clear that they aren't padded to 8 bytes, though, because
4524 * both standards say that "non-experimenter instructions are 4 bytes"
4525 * and do not mention any padding before the first instruction ID.
4526 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4527 * aligned on an odd 4-byte boundary.)
4529 * Anyway, we just assume they're all glommed together on byte
4531 error = ofputil_pull_property__(payload, NULL, 1, &ofpit);
4536 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4538 *insts |= 1u << inst;
4539 } else if (!loose) {
4547 parse_table_features_next_table(struct ofpbuf *payload,
4548 unsigned long int *next_tables)
4552 memset(next_tables, 0, bitmap_n_bytes(255));
4553 for (i = 0; i < ofpbuf_size(payload); i++) {
4554 uint8_t id = ((const uint8_t *) ofpbuf_data(payload))[i];
4556 return OFPERR_OFPBPC_BAD_VALUE;
4558 bitmap_set1(next_tables, id);
4564 parse_oxm(struct ofpbuf *b, bool loose,
4565 const struct mf_field **fieldp, bool *hasmask)
4570 oxmp = ofpbuf_try_pull(b, sizeof *oxmp);
4572 return OFPERR_OFPBPC_BAD_LEN;
4576 /* Determine '*hasmask'. If 'oxm' is masked, convert it to the equivalent
4577 * unmasked version, because the table of OXM fields we support only has
4578 * masked versions of fields that we support with masks, but we should be
4579 * able to parse the masked versions of those here. */
4580 *hasmask = NXM_HASMASK(oxm);
4582 if (NXM_LENGTH(oxm) & 1) {
4583 return OFPERR_OFPBPC_BAD_VALUE;
4585 oxm = NXM_HEADER(NXM_VENDOR(oxm), NXM_FIELD(oxm), NXM_LENGTH(oxm) / 2);
4588 *fieldp = mf_from_nxm_header(oxm);
4590 log_property(loose, "unknown OXM field %#"PRIx32, ntohl(*oxmp));
4592 return *fieldp ? 0 : OFPERR_OFPBMC_BAD_FIELD;
4596 parse_oxms(struct ofpbuf *payload, bool loose,
4597 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4599 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4600 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4602 while (ofpbuf_size(payload) > 0) {
4603 const struct mf_field *field;
4607 error = parse_oxm(payload, loose, &field, &hasmask);
4609 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4610 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4616 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4617 return OFPERR_OFPBMC_BAD_MASK;
4621 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4622 return OFPERR_OFPBMC_BAD_MASK;
4627 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4628 * ofputil_table_features in 'tf'.
4630 * If 'loose' is true, this function ignores properties and values that it does
4631 * not understand, as a controller would want to do when interpreting
4632 * capabilities provided by a switch. If 'loose' is false, this function
4633 * treats unknown properties and values as an error, as a switch would want to
4634 * do when interpreting a configuration request made by a controller.
4636 * A single OpenFlow message can specify features for multiple tables. Calling
4637 * this function multiple times for a single 'msg' iterates through the tables
4638 * in the message. The caller must initially leave 'msg''s layer pointers null
4639 * and not modify them between calls.
4641 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4642 * a positive "enum ofperr" value. */
4644 ofputil_decode_table_features(struct ofpbuf *msg,
4645 struct ofputil_table_features *tf, bool loose)
4647 const struct ofp_header *oh;
4648 struct ofp13_table_features *otf;
4649 struct ofpbuf properties;
4652 memset(tf, 0, sizeof *tf);
4655 ofpraw_pull_assert(msg);
4657 oh = ofpbuf_l2(msg);
4659 if (!ofpbuf_size(msg)) {
4663 if (ofpbuf_size(msg) < sizeof *otf) {
4664 return OFPERR_OFPBPC_BAD_LEN;
4667 otf = ofpbuf_data(msg);
4668 len = ntohs(otf->length);
4669 if (len < sizeof *otf || len % 8 || len > ofpbuf_size(msg)) {
4670 return OFPERR_OFPBPC_BAD_LEN;
4672 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4673 ofpbuf_pull(&properties, sizeof *otf);
4675 tf->table_id = otf->table_id;
4676 if (tf->table_id == OFPTT_ALL) {
4677 return OFPERR_OFPTFFC_BAD_TABLE;
4680 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4681 tf->metadata_match = otf->metadata_match;
4682 tf->metadata_write = otf->metadata_write;
4683 tf->miss_config = ofputil_table_miss_from_config(otf->config, oh->version);
4684 tf->max_entries = ntohl(otf->max_entries);
4686 while (ofpbuf_size(&properties) > 0) {
4687 struct ofpbuf payload;
4691 error = pull_table_feature_property(&properties, &payload, &type);
4696 switch ((enum ofp13_table_feature_prop_type) type) {
4697 case OFPTFPT13_INSTRUCTIONS:
4698 error = parse_instruction_ids(&payload, loose,
4699 &tf->nonmiss.instructions);
4701 case OFPTFPT13_INSTRUCTIONS_MISS:
4702 error = parse_instruction_ids(&payload, loose,
4703 &tf->miss.instructions);
4706 case OFPTFPT13_NEXT_TABLES:
4707 error = parse_table_features_next_table(&payload,
4710 case OFPTFPT13_NEXT_TABLES_MISS:
4711 error = parse_table_features_next_table(&payload, tf->miss.next);
4714 case OFPTFPT13_WRITE_ACTIONS:
4715 error = parse_action_bitmap(&payload, oh->version,
4716 &tf->nonmiss.write.ofpacts);
4718 case OFPTFPT13_WRITE_ACTIONS_MISS:
4719 error = parse_action_bitmap(&payload, oh->version,
4720 &tf->miss.write.ofpacts);
4723 case OFPTFPT13_APPLY_ACTIONS:
4724 error = parse_action_bitmap(&payload, oh->version,
4725 &tf->nonmiss.apply.ofpacts);
4727 case OFPTFPT13_APPLY_ACTIONS_MISS:
4728 error = parse_action_bitmap(&payload, oh->version,
4729 &tf->miss.apply.ofpacts);
4732 case OFPTFPT13_MATCH:
4733 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4735 case OFPTFPT13_WILDCARDS:
4736 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4739 case OFPTFPT13_WRITE_SETFIELD:
4740 error = parse_oxms(&payload, loose,
4741 &tf->nonmiss.write.set_fields, NULL);
4743 case OFPTFPT13_WRITE_SETFIELD_MISS:
4744 error = parse_oxms(&payload, loose,
4745 &tf->miss.write.set_fields, NULL);
4747 case OFPTFPT13_APPLY_SETFIELD:
4748 error = parse_oxms(&payload, loose,
4749 &tf->nonmiss.apply.set_fields, NULL);
4751 case OFPTFPT13_APPLY_SETFIELD_MISS:
4752 error = parse_oxms(&payload, loose,
4753 &tf->miss.apply.set_fields, NULL);
4756 case OFPTFPT13_EXPERIMENTER:
4757 case OFPTFPT13_EXPERIMENTER_MISS:
4759 log_property(loose, "unknown table features property %"PRIu16,
4761 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4769 /* Fix inconsistencies:
4771 * - Turn on 'match' bits that are set in 'mask', because maskable
4772 * fields are matchable.
4774 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4775 * that is arbitrarily maskable can be wildcarded entirely.
4777 * - Turn off 'wildcard' bits that are not in 'match', because a field
4778 * must be matchable for it to be meaningfully wildcarded. */
4779 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4780 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4781 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4786 /* Encodes and returns a request to obtain the table features of a switch.
4787 * The message is encoded for OpenFlow version 'ofp_version'. */
4789 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4791 struct ofpbuf *request = NULL;
4793 switch (ofp_version) {
4797 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4798 "(\'-O OpenFlow13\')");
4802 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4813 put_fields_property(struct ofpbuf *reply,
4814 const struct mf_bitmap *fields,
4815 const struct mf_bitmap *masks,
4816 enum ofp13_table_feature_prop_type property,
4817 enum ofp_version version)
4822 start_ofs = start_property(reply, property);
4823 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4824 uint32_t h_oxm = mf_oxm_header(field, version);
4827 if (masks && bitmap_is_set(masks->bm, field)) {
4828 h_oxm = NXM_MAKE_WILD_HEADER(h_oxm);
4831 n_oxm = htonl(h_oxm);
4832 ofpbuf_put(reply, &n_oxm, sizeof n_oxm);
4834 end_property(reply, start_ofs);
4838 put_table_action_features(struct ofpbuf *reply,
4839 const struct ofputil_table_action_features *taf,
4840 enum ofp13_table_feature_prop_type actions_type,
4841 enum ofp13_table_feature_prop_type set_fields_type,
4842 int miss_offset, enum ofp_version version)
4846 start_ofs = start_property(reply, actions_type + miss_offset);
4847 put_bitmap_properties(reply,
4848 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4850 end_property(reply, start_ofs);
4852 put_fields_property(reply, &taf->set_fields, NULL,
4853 set_fields_type + miss_offset, version);
4857 put_table_instruction_features(
4858 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4859 int miss_offset, enum ofp_version version)
4864 start_ofs = start_property(reply, OFPTFPT13_INSTRUCTIONS + miss_offset);
4865 put_bitmap_properties(reply,
4866 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4868 end_property(reply, start_ofs);
4870 start_ofs = start_property(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4871 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4872 ofpbuf_put(reply, &table_id, 1);
4874 end_property(reply, start_ofs);
4876 put_table_action_features(reply, &tif->write,
4877 OFPTFPT13_WRITE_ACTIONS,
4878 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4879 put_table_action_features(reply, &tif->apply,
4880 OFPTFPT13_APPLY_ACTIONS,
4881 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4885 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4886 struct list *replies)
4888 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4889 enum ofp_version version = ofpmp_version(replies);
4890 size_t start_ofs = ofpbuf_size(reply);
4891 struct ofp13_table_features *otf;
4893 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4894 otf->table_id = tf->table_id;
4895 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4896 otf->metadata_match = tf->metadata_match;
4897 otf->metadata_write = tf->metadata_write;
4898 otf->config = ofputil_table_miss_to_config(tf->miss_config, version);
4899 otf->max_entries = htonl(tf->max_entries);
4901 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4902 put_table_instruction_features(reply, &tf->miss, 1, version);
4904 put_fields_property(reply, &tf->match, &tf->mask,
4905 OFPTFPT13_MATCH, version);
4906 put_fields_property(reply, &tf->wildcard, NULL,
4907 OFPTFPT13_WILDCARDS, version);
4909 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4910 otf->length = htons(ofpbuf_size(reply) - start_ofs);
4911 ofpmp_postappend(replies, start_ofs);
4914 /* ofputil_table_mod */
4916 /* Given 'config', taken from an OpenFlow 'version' message that specifies
4917 * table configuration (a table mod, table stats, or table features message),
4918 * returns the table miss configuration that it specifies. */
4919 static enum ofputil_table_miss
4920 ofputil_table_miss_from_config(ovs_be32 config_, enum ofp_version version)
4922 uint32_t config = ntohl(config_);
4924 if (version < OFP13_VERSION) {
4925 switch (config & OFPTC11_TABLE_MISS_MASK) {
4926 case OFPTC11_TABLE_MISS_CONTROLLER:
4927 return OFPUTIL_TABLE_MISS_CONTROLLER;
4929 case OFPTC11_TABLE_MISS_CONTINUE:
4930 return OFPUTIL_TABLE_MISS_CONTINUE;
4932 case OFPTC11_TABLE_MISS_DROP:
4933 return OFPUTIL_TABLE_MISS_DROP;
4936 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
4937 return OFPUTIL_TABLE_MISS_CONTROLLER;
4940 return OFPUTIL_TABLE_MISS_DEFAULT;
4944 /* Given a table miss configuration, returns the corresponding OpenFlow table
4945 * configuration for use in an OpenFlow message of the given 'version'. */
4947 ofputil_table_miss_to_config(enum ofputil_table_miss miss,
4948 enum ofp_version version)
4950 if (version < OFP13_VERSION) {
4952 case OFPUTIL_TABLE_MISS_CONTROLLER:
4953 case OFPUTIL_TABLE_MISS_DEFAULT:
4954 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
4956 case OFPUTIL_TABLE_MISS_CONTINUE:
4957 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
4959 case OFPUTIL_TABLE_MISS_DROP:
4960 return htonl(OFPTC11_TABLE_MISS_DROP);
4970 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
4971 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4973 ofputil_decode_table_mod(const struct ofp_header *oh,
4974 struct ofputil_table_mod *pm)
4979 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4980 raw = ofpraw_pull_assert(&b);
4982 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
4983 const struct ofp11_table_mod *otm = ofpbuf_data(&b);
4985 pm->table_id = otm->table_id;
4986 pm->miss_config = ofputil_table_miss_from_config(otm->config,
4988 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
4989 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
4991 pm->table_id = otm->table_id;
4992 pm->miss_config = ofputil_table_miss_from_config(otm->config,
4994 /* We do not understand any properties yet, so we do not bother
4997 return OFPERR_OFPBRC_BAD_TYPE;
5003 /* Converts the abstract form of a "table mod" message in '*pm' into an OpenFlow
5004 * message suitable for 'protocol', and returns that encoded form in a buffer
5005 * owned by the caller. */
5007 ofputil_encode_table_mod(const struct ofputil_table_mod *pm,
5008 enum ofputil_protocol protocol)
5010 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5013 switch (ofp_version) {
5014 case OFP10_VERSION: {
5015 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5016 "(\'-O OpenFlow11\')");
5021 case OFP13_VERSION: {
5022 struct ofp11_table_mod *otm;
5024 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5025 otm = ofpbuf_put_zeros(b, sizeof *otm);
5026 otm->table_id = pm->table_id;
5027 otm->config = ofputil_table_miss_to_config(pm->miss_config,
5032 case OFP15_VERSION: {
5033 struct ofp14_table_mod *otm;
5035 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5036 otm = ofpbuf_put_zeros(b, sizeof *otm);
5037 otm->table_id = pm->table_id;
5038 otm->config = ofputil_table_miss_to_config(pm->miss_config,
5049 /* ofputil_role_request */
5051 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5052 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5053 * OFPERR_* value. */
5055 ofputil_decode_role_message(const struct ofp_header *oh,
5056 struct ofputil_role_request *rr)
5061 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5062 raw = ofpraw_pull_assert(&b);
5064 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5065 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5066 const struct ofp12_role_request *orr = ofpbuf_l3(&b);
5068 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5069 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5070 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5071 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5072 return OFPERR_OFPRRFC_BAD_ROLE;
5075 rr->role = ntohl(orr->role);
5076 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5077 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5078 : orr->generation_id == OVS_BE64_MAX) {
5079 rr->have_generation_id = false;
5080 rr->generation_id = 0;
5082 rr->have_generation_id = true;
5083 rr->generation_id = ntohll(orr->generation_id);
5085 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5086 raw == OFPRAW_NXT_ROLE_REPLY) {
5087 const struct nx_role_request *nrr = ofpbuf_l3(&b);
5089 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5090 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5091 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5093 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5094 nrr->role != htonl(NX_ROLE_MASTER) &&
5095 nrr->role != htonl(NX_ROLE_SLAVE)) {
5096 return OFPERR_OFPRRFC_BAD_ROLE;
5099 rr->role = ntohl(nrr->role) + 1;
5100 rr->have_generation_id = false;
5101 rr->generation_id = 0;
5109 /* Returns an encoded form of a role reply suitable for the "request" in a
5110 * buffer owned by the caller. */
5112 ofputil_encode_role_reply(const struct ofp_header *request,
5113 const struct ofputil_role_request *rr)
5118 raw = ofpraw_decode_assert(request);
5119 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5120 struct ofp12_role_request *orr;
5122 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5123 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5125 orr->role = htonl(rr->role);
5126 orr->generation_id = htonll(rr->have_generation_id
5129 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5130 struct nx_role_request *nrr;
5132 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5133 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5134 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5136 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5137 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5138 nrr->role = htonl(rr->role - 1);
5146 /* Encodes "role status" message 'status' for sending in the given
5147 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5148 * otherwise a null pointer. */
5150 ofputil_encode_role_status(const struct ofputil_role_status *status,
5151 enum ofputil_protocol protocol)
5153 enum ofp_version version;
5155 version = ofputil_protocol_to_ofp_version(protocol);
5156 if (version >= OFP14_VERSION) {
5157 struct ofp14_role_status *rstatus;
5160 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5162 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5163 rstatus->role = htonl(status->role);
5164 rstatus->reason = status->reason;
5165 rstatus->generation_id = htonll(status->generation_id);
5174 ofputil_decode_role_status(const struct ofp_header *oh,
5175 struct ofputil_role_status *rs)
5179 const struct ofp14_role_status *r;
5181 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5182 raw = ofpraw_pull_assert(&b);
5183 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5186 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5187 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5188 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5189 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5190 return OFPERR_OFPRRFC_BAD_ROLE;
5193 rs->role = ntohl(r->role);
5194 rs->generation_id = ntohll(r->generation_id);
5195 rs->reason = r->reason;
5202 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5203 * matched and a field that must be wildcarded. This function returns a bitmap
5204 * that contains both kinds of fields. */
5205 static struct mf_bitmap
5206 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5208 struct mf_bitmap wc = features->match;
5209 bitmap_not(wc.bm, MFF_N_IDS);
5210 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5214 struct ofp10_wc_map {
5215 enum ofp10_flow_wildcards wc10;
5216 enum mf_field_id mf;
5219 static const struct ofp10_wc_map ofp10_wc_map[] = {
5220 { OFPFW10_IN_PORT, MFF_IN_PORT },
5221 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5222 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5223 { OFPFW10_DL_DST, MFF_ETH_DST},
5224 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5225 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5226 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5227 { OFPFW10_TP_DST, MFF_TCP_DST },
5228 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5229 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5230 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5231 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5235 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5237 const struct ofp10_wc_map *p;
5240 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5241 if (bitmap_is_set(fields->bm, p->mf)) {
5248 static struct mf_bitmap
5249 mf_bitmap_from_of10(ovs_be32 wc10_)
5251 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5252 const struct ofp10_wc_map *p;
5253 uint32_t wc10 = ntohl(wc10_);
5255 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5256 if (wc10 & p->wc10) {
5257 bitmap_set1(fields.bm, p->mf);
5264 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5265 const struct ofputil_table_features *features,
5268 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5269 struct ofp10_table_stats *out;
5271 out = ofpbuf_put_zeros(buf, sizeof *out);
5272 out->table_id = features->table_id;
5273 ovs_strlcpy(out->name, features->name, sizeof out->name);
5274 out->wildcards = mf_bitmap_to_of10(&wc);
5275 out->max_entries = htonl(features->max_entries);
5276 out->active_count = htonl(stats->active_count);
5277 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5278 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5281 struct ofp11_wc_map {
5282 enum ofp11_flow_match_fields wc11;
5283 enum mf_field_id mf;
5286 static const struct ofp11_wc_map ofp11_wc_map[] = {
5287 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5288 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5289 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5290 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5291 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5292 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5293 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5294 { OFPFMF11_TP_DST, MFF_TCP_DST },
5295 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5296 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5297 /* I don't know what OFPFMF11_TYPE means. */
5298 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5299 { OFPFMF11_DL_DST, MFF_ETH_DST },
5300 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5301 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5302 { OFPFMF11_METADATA, MFF_METADATA },
5306 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5308 const struct ofp11_wc_map *p;
5311 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5312 if (bitmap_is_set(fields->bm, p->mf)) {
5319 static struct mf_bitmap
5320 mf_bitmap_from_of11(ovs_be32 wc11_)
5322 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5323 const struct ofp11_wc_map *p;
5324 uint32_t wc11 = ntohl(wc11_);
5326 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5327 if (wc11 & p->wc11) {
5328 bitmap_set1(fields.bm, p->mf);
5335 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5336 const struct ofputil_table_features *features,
5339 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5340 struct ofp11_table_stats *out;
5342 out = ofpbuf_put_zeros(buf, sizeof *out);
5343 out->table_id = features->table_id;
5344 ovs_strlcpy(out->name, features->name, sizeof out->name);
5345 out->wildcards = mf_bitmap_to_of11(&wc);
5346 out->match = mf_bitmap_to_of11(&features->match);
5347 out->instructions = ovsinst_bitmap_to_openflow(
5348 features->nonmiss.instructions, OFP11_VERSION);
5349 out->write_actions = ofpact_bitmap_to_openflow(
5350 features->nonmiss.write.ofpacts, OFP11_VERSION);
5351 out->apply_actions = ofpact_bitmap_to_openflow(
5352 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5353 out->config = htonl(features->miss_config);
5354 out->max_entries = htonl(features->max_entries);
5355 out->active_count = htonl(stats->active_count);
5356 out->lookup_count = htonll(stats->lookup_count);
5357 out->matched_count = htonll(stats->matched_count);
5361 mf_bitmap_to_oxm_bitmap(const struct mf_bitmap *fields,
5362 enum ofp_version version)
5364 uint64_t oxm_bitmap = 0;
5367 BITMAP_FOR_EACH_1 (i, MFF_N_IDS, fields->bm) {
5368 uint32_t oxm = mf_oxm_header(i, version);
5369 uint32_t vendor = NXM_VENDOR(oxm);
5370 int field = NXM_FIELD(oxm);
5372 if (vendor == OFPXMC12_OPENFLOW_BASIC && field < 64) {
5373 oxm_bitmap |= UINT64_C(1) << field;
5376 return htonll(oxm_bitmap);
5379 static struct mf_bitmap
5380 mf_bitmap_from_oxm_bitmap(ovs_be64 oxm_bitmap, enum ofp_version version)
5382 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5384 for (enum mf_field_id id = 0; id < MFF_N_IDS; id++) {
5385 const struct mf_field *f = mf_from_id(id);
5386 uint32_t oxm = f->oxm_header;
5387 uint32_t vendor = NXM_VENDOR(oxm);
5388 int field = NXM_FIELD(oxm);
5390 if (version >= f->oxm_version
5391 && vendor == OFPXMC12_OPENFLOW_BASIC
5393 && oxm_bitmap & htonll(UINT64_C(1) << field)) {
5394 bitmap_set1(fields.bm, id);
5401 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5402 const struct ofputil_table_features *features,
5405 struct ofp12_table_stats *out;
5407 out = ofpbuf_put_zeros(buf, sizeof *out);
5408 out->table_id = features->table_id;
5409 ovs_strlcpy(out->name, features->name, sizeof out->name);
5410 out->match = mf_bitmap_to_oxm_bitmap(&features->match, OFP12_VERSION);
5411 out->wildcards = mf_bitmap_to_oxm_bitmap(&features->wildcard,
5413 out->write_actions = ofpact_bitmap_to_openflow(
5414 features->nonmiss.write.ofpacts, OFP12_VERSION);
5415 out->apply_actions = ofpact_bitmap_to_openflow(
5416 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5417 out->write_setfields = mf_bitmap_to_oxm_bitmap(
5418 &features->nonmiss.write.set_fields, OFP12_VERSION);
5419 out->apply_setfields = mf_bitmap_to_oxm_bitmap(
5420 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5421 out->metadata_match = features->metadata_match;
5422 out->metadata_write = features->metadata_write;
5423 out->instructions = ovsinst_bitmap_to_openflow(
5424 features->nonmiss.instructions, OFP12_VERSION);
5425 out->config = ofputil_table_miss_to_config(features->miss_config,
5427 out->max_entries = htonl(features->max_entries);
5428 out->active_count = htonl(stats->active_count);
5429 out->lookup_count = htonll(stats->lookup_count);
5430 out->matched_count = htonll(stats->matched_count);
5434 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5437 struct ofp13_table_stats *out;
5439 out = ofpbuf_put_zeros(buf, sizeof *out);
5440 out->table_id = stats->table_id;
5441 out->active_count = htonl(stats->active_count);
5442 out->lookup_count = htonll(stats->lookup_count);
5443 out->matched_count = htonll(stats->matched_count);
5447 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5449 return ofpraw_alloc_stats_reply(request, 0);
5453 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5454 const struct ofputil_table_stats *stats,
5455 const struct ofputil_table_features *features)
5457 struct ofp_header *oh = ofpbuf_l2(reply);
5459 ovs_assert(stats->table_id == features->table_id);
5461 switch ((enum ofp_version) oh->version) {
5463 ofputil_put_ofp10_table_stats(stats, features, reply);
5467 ofputil_put_ofp11_table_stats(stats, features, reply);
5471 ofputil_put_ofp12_table_stats(stats, features, reply);
5477 ofputil_put_ofp13_table_stats(stats, reply);
5486 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5487 struct ofputil_table_stats *stats,
5488 struct ofputil_table_features *features)
5490 struct ofp10_table_stats *ots;
5492 ots = ofpbuf_try_pull(msg, sizeof *ots);
5494 return OFPERR_OFPBRC_BAD_LEN;
5497 features->table_id = ots->table_id;
5498 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5499 features->max_entries = ntohl(ots->max_entries);
5500 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5502 stats->table_id = ots->table_id;
5503 stats->active_count = ntohl(ots->active_count);
5504 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5505 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5511 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5512 struct ofputil_table_stats *stats,
5513 struct ofputil_table_features *features)
5515 struct ofp11_table_stats *ots;
5517 ots = ofpbuf_try_pull(msg, sizeof *ots);
5519 return OFPERR_OFPBRC_BAD_LEN;
5522 features->table_id = ots->table_id;
5523 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5524 features->max_entries = ntohl(ots->max_entries);
5525 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5526 ots->instructions, OFP11_VERSION);
5527 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5528 ots->write_actions, OFP11_VERSION);
5529 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5530 ots->write_actions, OFP11_VERSION);
5531 features->miss = features->nonmiss;
5532 features->miss_config = ofputil_table_miss_from_config(ots->config,
5534 features->match = mf_bitmap_from_of11(ots->match);
5535 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5536 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5538 stats->table_id = ots->table_id;
5539 stats->active_count = ntohl(ots->active_count);
5540 stats->lookup_count = ntohll(ots->lookup_count);
5541 stats->matched_count = ntohll(ots->matched_count);
5547 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5548 struct ofputil_table_stats *stats,
5549 struct ofputil_table_features *features)
5551 struct ofp12_table_stats *ots;
5553 ots = ofpbuf_try_pull(msg, sizeof *ots);
5555 return OFPERR_OFPBRC_BAD_LEN;
5558 features->table_id = ots->table_id;
5559 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5560 features->metadata_match = ots->metadata_match;
5561 features->metadata_write = ots->metadata_write;
5562 features->miss_config = ofputil_table_miss_from_config(ots->config,
5564 features->max_entries = ntohl(ots->max_entries);
5566 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5567 ots->instructions, OFP12_VERSION);
5568 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5569 ots->write_actions, OFP12_VERSION);
5570 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5571 ots->apply_actions, OFP12_VERSION);
5572 features->nonmiss.write.set_fields = mf_bitmap_from_oxm_bitmap(
5573 ots->write_setfields, OFP12_VERSION);
5574 features->nonmiss.apply.set_fields = mf_bitmap_from_oxm_bitmap(
5575 ots->apply_setfields, OFP12_VERSION);
5576 features->miss = features->nonmiss;
5578 features->match = mf_bitmap_from_oxm_bitmap(ots->match, OFP12_VERSION);
5579 features->wildcard = mf_bitmap_from_oxm_bitmap(ots->wildcards,
5581 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5583 stats->table_id = ots->table_id;
5584 stats->active_count = ntohl(ots->active_count);
5585 stats->lookup_count = ntohll(ots->lookup_count);
5586 stats->matched_count = ntohll(ots->matched_count);
5592 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
5593 struct ofputil_table_stats *stats,
5594 struct ofputil_table_features *features)
5596 struct ofp13_table_stats *ots;
5598 ots = ofpbuf_try_pull(msg, sizeof *ots);
5600 return OFPERR_OFPBRC_BAD_LEN;
5603 features->table_id = ots->table_id;
5605 stats->table_id = ots->table_id;
5606 stats->active_count = ntohl(ots->active_count);
5607 stats->lookup_count = ntohll(ots->lookup_count);
5608 stats->matched_count = ntohll(ots->matched_count);
5614 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
5615 struct ofputil_table_stats *stats,
5616 struct ofputil_table_features *features)
5618 const struct ofp_header *oh;
5621 ofpraw_pull_assert(msg);
5625 if (!ofpbuf_size(msg)) {
5629 memset(stats, 0, sizeof *stats);
5630 memset(features, 0, sizeof *features);
5632 switch ((enum ofp_version) oh->version) {
5634 return ofputil_decode_ofp10_table_stats(msg, stats, features);
5637 return ofputil_decode_ofp11_table_stats(msg, stats, features);
5640 return ofputil_decode_ofp12_table_stats(msg, stats, features);
5645 return ofputil_decode_ofp13_table_stats(msg, stats, features);
5652 /* ofputil_flow_monitor_request */
5654 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
5655 * ofputil_flow_monitor_request in 'rq'.
5657 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
5658 * message. Calling this function multiple times for a single 'msg' iterates
5659 * through the requests. The caller must initially leave 'msg''s layer
5660 * pointers null and not modify them between calls.
5662 * Returns 0 if successful, EOF if no requests were left in this 'msg',
5663 * otherwise an OFPERR_* value. */
5665 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
5668 struct nx_flow_monitor_request *nfmr;
5672 ofpraw_pull_assert(msg);
5675 if (!ofpbuf_size(msg)) {
5679 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
5681 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
5682 "leftover bytes at end", ofpbuf_size(msg));
5683 return OFPERR_OFPBRC_BAD_LEN;
5686 flags = ntohs(nfmr->flags);
5687 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
5688 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
5689 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
5690 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
5692 return OFPERR_OFPMOFC_BAD_FLAGS;
5695 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
5696 return OFPERR_NXBRC_MUST_BE_ZERO;
5699 rq->id = ntohl(nfmr->id);
5701 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
5702 rq->table_id = nfmr->table_id;
5704 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
5708 ofputil_append_flow_monitor_request(
5709 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
5711 struct nx_flow_monitor_request *nfmr;
5715 if (!ofpbuf_size(msg)) {
5716 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
5719 start_ofs = ofpbuf_size(msg);
5720 ofpbuf_put_zeros(msg, sizeof *nfmr);
5721 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
5723 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
5724 nfmr->id = htonl(rq->id);
5725 nfmr->flags = htons(rq->flags);
5726 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
5727 nfmr->match_len = htons(match_len);
5728 nfmr->table_id = rq->table_id;
5731 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
5732 * into an abstract ofputil_flow_update in 'update'. The caller must have
5733 * initialized update->match to point to space allocated for a match.
5735 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
5736 * actions (except for NXFME_ABBREV, which never includes actions). The caller
5737 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
5738 * will point into the 'ofpacts' buffer.
5740 * Multiple flow updates can be packed into a single OpenFlow message. Calling
5741 * this function multiple times for a single 'msg' iterates through the
5742 * updates. The caller must initially leave 'msg''s layer pointers null and
5743 * not modify them between calls.
5745 * Returns 0 if successful, EOF if no updates were left in this 'msg',
5746 * otherwise an OFPERR_* value. */
5748 ofputil_decode_flow_update(struct ofputil_flow_update *update,
5749 struct ofpbuf *msg, struct ofpbuf *ofpacts)
5751 struct nx_flow_update_header *nfuh;
5752 unsigned int length;
5753 struct ofp_header *oh;
5756 ofpraw_pull_assert(msg);
5759 if (!ofpbuf_size(msg)) {
5763 if (ofpbuf_size(msg) < sizeof(struct nx_flow_update_header)) {
5769 nfuh = ofpbuf_data(msg);
5770 update->event = ntohs(nfuh->event);
5771 length = ntohs(nfuh->length);
5772 if (length > ofpbuf_size(msg) || length % 8) {
5776 if (update->event == NXFME_ABBREV) {
5777 struct nx_flow_update_abbrev *nfua;
5779 if (length != sizeof *nfua) {
5783 nfua = ofpbuf_pull(msg, sizeof *nfua);
5784 update->xid = nfua->xid;
5786 } else if (update->event == NXFME_ADDED
5787 || update->event == NXFME_DELETED
5788 || update->event == NXFME_MODIFIED) {
5789 struct nx_flow_update_full *nfuf;
5790 unsigned int actions_len;
5791 unsigned int match_len;
5794 if (length < sizeof *nfuf) {
5798 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
5799 match_len = ntohs(nfuf->match_len);
5800 if (sizeof *nfuf + match_len > length) {
5804 update->reason = ntohs(nfuf->reason);
5805 update->idle_timeout = ntohs(nfuf->idle_timeout);
5806 update->hard_timeout = ntohs(nfuf->hard_timeout);
5807 update->table_id = nfuf->table_id;
5808 update->cookie = nfuf->cookie;
5809 update->priority = ntohs(nfuf->priority);
5811 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
5816 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
5817 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
5823 update->ofpacts = ofpbuf_data(ofpacts);
5824 update->ofpacts_len = ofpbuf_size(ofpacts);
5827 VLOG_WARN_RL(&bad_ofmsg_rl,
5828 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
5829 ntohs(nfuh->event));
5830 return OFPERR_NXBRC_FM_BAD_EVENT;
5834 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
5835 "leftover bytes at end", ofpbuf_size(msg));
5836 return OFPERR_OFPBRC_BAD_LEN;
5840 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
5842 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
5844 return ntohl(cancel->id);
5848 ofputil_encode_flow_monitor_cancel(uint32_t id)
5850 struct nx_flow_monitor_cancel *nfmc;
5853 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
5854 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
5855 nfmc->id = htonl(id);
5860 ofputil_start_flow_update(struct list *replies)
5864 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
5868 list_push_back(replies, &msg->list_node);
5872 ofputil_append_flow_update(const struct ofputil_flow_update *update,
5873 struct list *replies)
5875 enum ofp_version version = ofpmp_version(replies);
5876 struct nx_flow_update_header *nfuh;
5880 msg = ofpbuf_from_list(list_back(replies));
5881 start_ofs = ofpbuf_size(msg);
5883 if (update->event == NXFME_ABBREV) {
5884 struct nx_flow_update_abbrev *nfua;
5886 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
5887 nfua->xid = update->xid;
5889 struct nx_flow_update_full *nfuf;
5892 ofpbuf_put_zeros(msg, sizeof *nfuf);
5893 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
5894 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
5896 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
5897 nfuf->reason = htons(update->reason);
5898 nfuf->priority = htons(update->priority);
5899 nfuf->idle_timeout = htons(update->idle_timeout);
5900 nfuf->hard_timeout = htons(update->hard_timeout);
5901 nfuf->match_len = htons(match_len);
5902 nfuf->table_id = update->table_id;
5903 nfuf->cookie = update->cookie;
5906 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
5907 nfuh->length = htons(ofpbuf_size(msg) - start_ofs);
5908 nfuh->event = htons(update->event);
5910 ofpmp_postappend(replies, start_ofs);
5914 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
5915 enum ofputil_protocol protocol)
5917 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5921 size = po->ofpacts_len;
5922 if (po->buffer_id == UINT32_MAX) {
5923 size += po->packet_len;
5926 switch (ofp_version) {
5927 case OFP10_VERSION: {
5928 struct ofp10_packet_out *opo;
5931 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
5932 ofpbuf_put_zeros(msg, sizeof *opo);
5933 actions_ofs = ofpbuf_size(msg);
5934 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
5937 opo = ofpbuf_l3(msg);
5938 opo->buffer_id = htonl(po->buffer_id);
5939 opo->in_port = htons(ofp_to_u16(po->in_port));
5940 opo->actions_len = htons(ofpbuf_size(msg) - actions_ofs);
5948 case OFP15_VERSION: {
5949 struct ofp11_packet_out *opo;
5952 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
5953 ofpbuf_put_zeros(msg, sizeof *opo);
5954 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
5956 opo = ofpbuf_l3(msg);
5957 opo->buffer_id = htonl(po->buffer_id);
5958 opo->in_port = ofputil_port_to_ofp11(po->in_port);
5959 opo->actions_len = htons(len);
5967 if (po->buffer_id == UINT32_MAX) {
5968 ofpbuf_put(msg, po->packet, po->packet_len);
5971 ofpmsg_update_length(msg);
5976 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
5978 make_echo_request(enum ofp_version ofp_version)
5980 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
5984 /* Creates and returns an OFPT_ECHO_REPLY message matching the
5985 * OFPT_ECHO_REQUEST message in 'rq'. */
5987 make_echo_reply(const struct ofp_header *rq)
5989 struct ofpbuf rq_buf;
5990 struct ofpbuf *reply;
5992 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
5993 ofpraw_pull_assert(&rq_buf);
5995 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, ofpbuf_size(&rq_buf));
5996 ofpbuf_put(reply, ofpbuf_data(&rq_buf), ofpbuf_size(&rq_buf));
6001 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6005 switch (ofp_version) {
6011 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6015 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6022 return ofpraw_alloc(type, ofp_version, 0);
6026 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
6028 switch (flags & OFPC_FRAG_MASK) {
6029 case OFPC_FRAG_NORMAL: return "normal";
6030 case OFPC_FRAG_DROP: return "drop";
6031 case OFPC_FRAG_REASM: return "reassemble";
6032 case OFPC_FRAG_NX_MATCH: return "nx-match";
6039 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
6041 if (!strcasecmp(s, "normal")) {
6042 *flags = OFPC_FRAG_NORMAL;
6043 } else if (!strcasecmp(s, "drop")) {
6044 *flags = OFPC_FRAG_DROP;
6045 } else if (!strcasecmp(s, "reassemble")) {
6046 *flags = OFPC_FRAG_REASM;
6047 } else if (!strcasecmp(s, "nx-match")) {
6048 *flags = OFPC_FRAG_NX_MATCH;
6055 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6056 * port number and stores the latter in '*ofp10_port', for the purpose of
6057 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6058 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6060 * See the definition of OFP11_MAX for an explanation of the mapping. */
6062 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6064 uint32_t ofp11_port_h = ntohl(ofp11_port);
6066 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6067 *ofp10_port = u16_to_ofp(ofp11_port_h);
6069 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6070 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6073 *ofp10_port = OFPP_NONE;
6074 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6075 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6076 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6077 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6078 return OFPERR_OFPBAC_BAD_OUT_PORT;
6082 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6083 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6085 * See the definition of OFP11_MAX for an explanation of the mapping. */
6087 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6089 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6090 ? ofp_to_u16(ofp10_port)
6091 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6094 #define OFPUTIL_NAMED_PORTS \
6095 OFPUTIL_NAMED_PORT(IN_PORT) \
6096 OFPUTIL_NAMED_PORT(TABLE) \
6097 OFPUTIL_NAMED_PORT(NORMAL) \
6098 OFPUTIL_NAMED_PORT(FLOOD) \
6099 OFPUTIL_NAMED_PORT(ALL) \
6100 OFPUTIL_NAMED_PORT(CONTROLLER) \
6101 OFPUTIL_NAMED_PORT(LOCAL) \
6102 OFPUTIL_NAMED_PORT(ANY)
6104 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6105 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6106 OFPUTIL_NAMED_PORTS \
6107 OFPUTIL_NAMED_PORT(NONE)
6109 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6110 * integer or, for reserved ports, the standard OpenFlow name for the port
6113 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6114 * or name. The caller should issue an error message in this case, because
6115 * this function usually does not. (This gives the caller an opportunity to
6116 * look up the port name another way, e.g. by contacting the switch and listing
6117 * the names of all its ports).
6119 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6120 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6121 * range as described in include/openflow/openflow-1.1.h. */
6123 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6125 unsigned int port32; /* int is at least 32 bits wide. */
6128 VLOG_WARN("Negative value %s is not a valid port number.", s);
6132 if (str_to_uint(s, 10, &port32)) {
6133 if (port32 < ofp_to_u16(OFPP_MAX)) {
6135 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6136 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6137 "be translated to %u when talking to an OF1.1 or "
6138 "later controller", port32, port32 + OFPP11_OFFSET);
6139 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6140 char name[OFP_MAX_PORT_NAME_LEN];
6142 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6143 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6144 "for compatibility with OpenFlow 1.1 and later",
6146 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6147 VLOG_WARN("port %u is outside the supported range 0 through "
6148 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6149 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6152 port32 -= OFPP11_OFFSET;
6155 *portp = u16_to_ofp(port32);
6162 static const struct pair pairs[] = {
6163 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6164 OFPUTIL_NAMED_PORTS_WITH_NONE
6165 #undef OFPUTIL_NAMED_PORT
6167 const struct pair *p;
6169 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6170 if (!strcasecmp(s, p->name)) {
6179 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6180 * Most ports' string representation is just the port number, but for special
6181 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6183 ofputil_format_port(ofp_port_t port, struct ds *s)
6185 char name[OFP_MAX_PORT_NAME_LEN];
6187 ofputil_port_to_string(port, name, sizeof name);
6188 ds_put_cstr(s, name);
6191 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6192 * representation of OpenFlow port number 'port'. Most ports are represented
6193 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6194 * by name, e.g. "LOCAL". */
6196 ofputil_port_to_string(ofp_port_t port,
6197 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6200 #define OFPUTIL_NAMED_PORT(NAME) \
6202 ovs_strlcpy(namebuf, #NAME, bufsize); \
6205 #undef OFPUTIL_NAMED_PORT
6208 snprintf(namebuf, bufsize, "%"PRIu16, port);
6213 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6214 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6215 * (either "ANY" or "ALL").
6217 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6220 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6222 if (!strcasecmp(s, "any")) {
6223 *group_idp = OFPG11_ANY;
6224 } else if (!strcasecmp(s, "all")) {
6225 *group_idp = OFPG11_ALL;
6226 } else if (!str_to_uint(s, 10, group_idp)) {
6227 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6228 "32-bit nonnegative integers or the keywords ANY or "
6236 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6237 * Most groups' string representation is just the number, but for special
6238 * groups, e.g. OFPG11_ALL, it is the name, e.g. "ALL". */
6240 ofputil_format_group(uint32_t group_id, struct ds *s)
6242 char name[MAX_GROUP_NAME_LEN];
6244 ofputil_group_to_string(group_id, name, sizeof name);
6245 ds_put_cstr(s, name);
6249 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6250 * representation of OpenFlow group ID 'group_id'. Most group are represented
6251 * as just their number, but special groups, e.g. OFPG11_ALL, are represented
6252 * by name, e.g. "ALL". */
6254 ofputil_group_to_string(uint32_t group_id,
6255 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6259 ovs_strlcpy(namebuf, "ALL", bufsize);
6263 ovs_strlcpy(namebuf, "ANY", bufsize);
6267 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6272 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6273 * 'ofp_version', tries to pull the first element from the array. If
6274 * successful, initializes '*pp' with an abstract representation of the
6275 * port and returns 0. If no ports remain to be decoded, returns EOF.
6276 * On an error, returns a positive OFPERR_* value. */
6278 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6279 struct ofputil_phy_port *pp)
6281 memset(pp, 0, sizeof *pp);
6283 switch (ofp_version) {
6284 case OFP10_VERSION: {
6285 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6286 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6290 case OFP13_VERSION: {
6291 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6292 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6296 return ofpbuf_size(b) ? ofputil_pull_ofp14_port(pp, b) : EOF;
6303 ofputil_normalize_match__(struct match *match, bool may_log)
6306 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6307 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6308 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6309 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6310 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6311 MAY_ARP_THA = 1 << 5, /* arp_tha */
6312 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6313 MAY_ND_TARGET = 1 << 7, /* nd_target */
6314 MAY_MPLS = 1 << 8, /* mpls label and tc */
6317 struct flow_wildcards wc;
6319 /* Figure out what fields may be matched. */
6320 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6321 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6322 if (match->flow.nw_proto == IPPROTO_TCP ||
6323 match->flow.nw_proto == IPPROTO_UDP ||
6324 match->flow.nw_proto == IPPROTO_SCTP ||
6325 match->flow.nw_proto == IPPROTO_ICMP) {
6326 may_match |= MAY_TP_ADDR;
6328 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6329 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6330 if (match->flow.nw_proto == IPPROTO_TCP ||
6331 match->flow.nw_proto == IPPROTO_UDP ||
6332 match->flow.nw_proto == IPPROTO_SCTP) {
6333 may_match |= MAY_TP_ADDR;
6334 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6335 may_match |= MAY_TP_ADDR;
6336 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6337 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6338 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6339 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6342 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6343 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6344 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6345 } else if (eth_type_mpls(match->flow.dl_type)) {
6346 may_match = MAY_MPLS;
6351 /* Clear the fields that may not be matched. */
6353 if (!(may_match & MAY_NW_ADDR)) {
6354 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6356 if (!(may_match & MAY_TP_ADDR)) {
6357 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6359 if (!(may_match & MAY_NW_PROTO)) {
6360 wc.masks.nw_proto = 0;
6362 if (!(may_match & MAY_IPVx)) {
6363 wc.masks.nw_tos = 0;
6364 wc.masks.nw_ttl = 0;
6366 if (!(may_match & MAY_ARP_SHA)) {
6367 memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN);
6369 if (!(may_match & MAY_ARP_THA)) {
6370 memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN);
6372 if (!(may_match & MAY_IPV6)) {
6373 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6374 wc.masks.ipv6_label = htonl(0);
6376 if (!(may_match & MAY_ND_TARGET)) {
6377 wc.masks.nd_target = in6addr_any;
6379 if (!(may_match & MAY_MPLS)) {
6380 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6383 /* Log any changes. */
6384 if (!flow_wildcards_equal(&wc, &match->wc)) {
6385 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6386 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6389 match_zero_wildcarded_fields(match);
6392 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6393 VLOG_INFO("normalization changed ofp_match, details:");
6394 VLOG_INFO(" pre: %s", pre);
6395 VLOG_INFO("post: %s", post);
6402 /* "Normalizes" the wildcards in 'match'. That means:
6404 * 1. If the type of level N is known, then only the valid fields for that
6405 * level may be specified. For example, ARP does not have a TOS field,
6406 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6407 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6408 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6411 * 2. If the type of level N is not known (or not understood by Open
6412 * vSwitch), then no fields at all for that level may be specified. For
6413 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6414 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6417 * If this function changes 'match', it logs a rate-limited informational
6420 ofputil_normalize_match(struct match *match)
6422 ofputil_normalize_match__(match, true);
6425 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6426 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6427 * sense for use on flows received from elsewhere (so that a bug in the program
6428 * that sent them can be reported and corrected). */
6430 ofputil_normalize_match_quiet(struct match *match)
6432 ofputil_normalize_match__(match, false);
6435 /* Parses a key or a key-value pair from '*stringp'.
6437 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6438 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6439 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6440 * are substrings of '*stringp' created by replacing some of its bytes by null
6441 * terminators. Returns true.
6443 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6444 * NULL and returns false. */
6446 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6448 char *pos, *key, *value;
6452 pos += strspn(pos, ", \t\r\n");
6454 *keyp = *valuep = NULL;
6459 key_len = strcspn(pos, ":=(, \t\r\n");
6460 if (key[key_len] == ':' || key[key_len] == '=') {
6461 /* The value can be separated by a colon. */
6464 value = key + key_len + 1;
6465 value_len = strcspn(value, ", \t\r\n");
6466 pos = value + value_len + (value[value_len] != '\0');
6467 value[value_len] = '\0';
6468 } else if (key[key_len] == '(') {
6469 /* The value can be surrounded by balanced parentheses. The outermost
6470 * set of parentheses is removed. */
6474 value = key + key_len + 1;
6475 for (value_len = 0; level > 0; value_len++) {
6476 switch (value[value_len]) {
6490 value[value_len - 1] = '\0';
6491 pos = value + value_len;
6493 /* There might be no value at all. */
6494 value = key + key_len; /* Will become the empty string below. */
6495 pos = key + key_len + (key[key_len] != '\0');
6497 key[key_len] = '\0';
6505 /* Encode a dump ports request for 'port', the encoded message
6506 * will be for Open Flow version 'ofp_version'. Returns message
6507 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6509 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6511 struct ofpbuf *request;
6513 switch (ofp_version) {
6514 case OFP10_VERSION: {
6515 struct ofp10_port_stats_request *req;
6516 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6517 req = ofpbuf_put_zeros(request, sizeof *req);
6518 req->port_no = htons(ofp_to_u16(port));
6525 case OFP15_VERSION: {
6526 struct ofp11_port_stats_request *req;
6527 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6528 req = ofpbuf_put_zeros(request, sizeof *req);
6529 req->port_no = ofputil_port_to_ofp11(port);
6540 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6541 struct ofp10_port_stats *ps10)
6543 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6544 memset(ps10->pad, 0, sizeof ps10->pad);
6545 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6546 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6547 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6548 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6549 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6550 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6551 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6552 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6553 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6554 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6555 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6556 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6560 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6561 struct ofp11_port_stats *ps11)
6563 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6564 memset(ps11->pad, 0, sizeof ps11->pad);
6565 ps11->rx_packets = htonll(ops->stats.rx_packets);
6566 ps11->tx_packets = htonll(ops->stats.tx_packets);
6567 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6568 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6569 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6570 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6571 ps11->rx_errors = htonll(ops->stats.rx_errors);
6572 ps11->tx_errors = htonll(ops->stats.tx_errors);
6573 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6574 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
6575 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6576 ps11->collisions = htonll(ops->stats.collisions);
6580 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
6581 struct ofp13_port_stats *ps13)
6583 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
6584 ps13->duration_sec = htonl(ops->duration_sec);
6585 ps13->duration_nsec = htonl(ops->duration_nsec);
6589 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
6590 struct list *replies)
6592 struct ofp14_port_stats_prop_ethernet *eth;
6593 struct ofp14_port_stats *ps14;
6594 struct ofpbuf *reply;
6596 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
6598 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
6599 ps14->length = htons(sizeof *ps14 + sizeof *eth);
6600 memset(ps14->pad, 0, sizeof ps14->pad);
6601 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
6602 ps14->duration_sec = htonl(ops->duration_sec);
6603 ps14->duration_nsec = htonl(ops->duration_nsec);
6604 ps14->rx_packets = htonll(ops->stats.rx_packets);
6605 ps14->tx_packets = htonll(ops->stats.tx_packets);
6606 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
6607 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
6608 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
6609 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
6610 ps14->rx_errors = htonll(ops->stats.rx_errors);
6611 ps14->tx_errors = htonll(ops->stats.tx_errors);
6613 eth = ofpbuf_put_uninit(reply, sizeof *eth);
6614 eth->type = htons(OFPPSPT14_ETHERNET);
6615 eth->length = htons(sizeof *eth);
6616 memset(eth->pad, 0, sizeof eth->pad);
6617 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6618 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
6619 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6620 eth->collisions = htonll(ops->stats.collisions);
6623 /* Encode a ports stat for 'ops' and append it to 'replies'. */
6625 ofputil_append_port_stat(struct list *replies,
6626 const struct ofputil_port_stats *ops)
6628 switch (ofpmp_version(replies)) {
6629 case OFP13_VERSION: {
6630 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6631 ofputil_port_stats_to_ofp13(ops, reply);
6635 case OFP11_VERSION: {
6636 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6637 ofputil_port_stats_to_ofp11(ops, reply);
6641 case OFP10_VERSION: {
6642 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6643 ofputil_port_stats_to_ofp10(ops, reply);
6649 ofputil_append_ofp14_port_stats(ops, replies);
6658 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
6659 const struct ofp10_port_stats *ps10)
6661 memset(ops, 0, sizeof *ops);
6663 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
6664 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
6665 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
6666 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
6667 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
6668 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
6669 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
6670 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
6671 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
6672 ops->stats.rx_frame_errors =
6673 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
6674 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
6675 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
6676 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
6677 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
6683 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
6684 const struct ofp11_port_stats *ps11)
6688 memset(ops, 0, sizeof *ops);
6689 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
6694 ops->stats.rx_packets = ntohll(ps11->rx_packets);
6695 ops->stats.tx_packets = ntohll(ps11->tx_packets);
6696 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
6697 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
6698 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
6699 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
6700 ops->stats.rx_errors = ntohll(ps11->rx_errors);
6701 ops->stats.tx_errors = ntohll(ps11->tx_errors);
6702 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
6703 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
6704 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
6705 ops->stats.collisions = ntohll(ps11->collisions);
6706 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
6712 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
6713 const struct ofp13_port_stats *ps13)
6715 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
6717 ops->duration_sec = ntohl(ps13->duration_sec);
6718 ops->duration_nsec = ntohl(ps13->duration_nsec);
6724 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
6725 struct ofputil_port_stats *ops)
6727 const struct ofp14_port_stats_prop_ethernet *eth = ofpbuf_data(payload);
6729 if (ofpbuf_size(payload) != sizeof *eth) {
6730 return OFPERR_OFPBPC_BAD_LEN;
6733 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
6734 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
6735 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
6736 ops->stats.collisions = ntohll(eth->collisions);
6742 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
6745 const struct ofp14_port_stats *ps14;
6746 struct ofpbuf properties;
6750 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
6752 return OFPERR_OFPBRC_BAD_LEN;
6755 len = ntohs(ps14->length);
6756 if (len < sizeof *ps14 || len - sizeof *ps14 > ofpbuf_size(msg)) {
6757 return OFPERR_OFPBRC_BAD_LEN;
6759 len -= sizeof *ps14;
6760 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
6762 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
6767 ops->duration_sec = ntohl(ps14->duration_sec);
6768 ops->duration_nsec = ntohl(ps14->duration_nsec);
6769 ops->stats.rx_packets = ntohll(ps14->rx_packets);
6770 ops->stats.tx_packets = ntohll(ps14->tx_packets);
6771 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
6772 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
6773 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
6774 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
6775 ops->stats.rx_errors = ntohll(ps14->rx_errors);
6776 ops->stats.tx_errors = ntohll(ps14->tx_errors);
6777 ops->stats.rx_frame_errors = UINT64_MAX;
6778 ops->stats.rx_over_errors = UINT64_MAX;
6779 ops->stats.rx_crc_errors = UINT64_MAX;
6780 ops->stats.collisions = UINT64_MAX;
6782 while (ofpbuf_size(&properties) > 0) {
6783 struct ofpbuf payload;
6787 error = ofputil_pull_property(&properties, &payload, &type);
6793 case OFPPSPT14_ETHERNET:
6794 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
6798 log_property(true, "unknown port stats property %"PRIu16, type);
6811 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
6814 ofputil_count_port_stats(const struct ofp_header *oh)
6816 struct ofputil_port_stats ps;
6820 ofpbuf_use_const(&b, oh, ntohs(oh->length));
6821 ofpraw_pull_assert(&b);
6822 while (!ofputil_decode_port_stats(&ps, &b)) {
6828 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
6829 * ofputil_port_stats in 'ps'.
6831 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
6832 * message. Calling this function multiple times for a single 'msg' iterates
6833 * through the replies. The caller must initially leave 'msg''s layer pointers
6834 * null and not modify them between calls.
6836 * Returns 0 if successful, EOF if no replies were left in this 'msg',
6837 * otherwise a positive errno value. */
6839 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
6845 ? ofpraw_decode(&raw, msg->frame)
6846 : ofpraw_pull(&raw, msg));
6851 if (!ofpbuf_size(msg)) {
6853 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
6854 return ofputil_pull_ofp14_port_stats(ps, msg);
6855 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
6856 const struct ofp13_port_stats *ps13;
6858 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
6862 return ofputil_port_stats_from_ofp13(ps, ps13);
6863 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
6864 const struct ofp11_port_stats *ps11;
6866 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
6870 return ofputil_port_stats_from_ofp11(ps, ps11);
6871 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
6872 const struct ofp10_port_stats *ps10;
6874 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
6878 return ofputil_port_stats_from_ofp10(ps, ps10);
6884 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
6885 "bytes at end", ofpbuf_size(msg));
6886 return OFPERR_OFPBRC_BAD_LEN;
6889 /* Parse a port status request message into a 16 bit OpenFlow 1.0
6890 * port number and stores the latter in '*ofp10_port'.
6891 * Returns 0 if successful, otherwise an OFPERR_* number. */
6893 ofputil_decode_port_stats_request(const struct ofp_header *request,
6894 ofp_port_t *ofp10_port)
6896 switch ((enum ofp_version)request->version) {
6901 case OFP11_VERSION: {
6902 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
6903 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
6906 case OFP10_VERSION: {
6907 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
6908 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
6917 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
6919 ofputil_bucket_list_destroy(struct list *buckets)
6921 struct ofputil_bucket *bucket, *next_bucket;
6923 LIST_FOR_EACH_SAFE (bucket, next_bucket, list_node, buckets) {
6924 list_remove(&bucket->list_node);
6925 free(bucket->ofpacts);
6930 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
6931 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
6934 * Group statistics include packet and byte counts for each group. */
6936 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
6939 struct ofpbuf *request;
6941 switch (ofp_version) {
6943 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
6944 "(\'-O OpenFlow11\')");
6949 case OFP15_VERSION: {
6950 struct ofp11_group_stats_request *req;
6951 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
6952 req = ofpbuf_put_zeros(request, sizeof *req);
6953 req->group_id = htonl(group_id);
6963 /* Decodes the OpenFlow group description request in 'oh', returning the group
6964 * whose description is requested, or OFPG_ALL if stats for all groups was
6967 ofputil_decode_group_desc_request(const struct ofp_header *oh)
6969 struct ofpbuf request;
6972 ofpbuf_use_const(&request, oh, ntohs(oh->length));
6973 raw = ofpraw_pull_assert(&request);
6974 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
6976 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
6977 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
6978 return ntohl(*group_id);
6984 /* Returns an OpenFlow group description request for OpenFlow version
6985 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
6986 * request stats for all groups (OpenFlow 1.4 and earlier always request all
6989 * Group descriptions include the bucket and action configuration for each
6992 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
6995 struct ofpbuf *request;
6998 switch (ofp_version) {
7000 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7001 "(\'-O OpenFlow11\')");
7006 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7010 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7012 gid = htonl(group_id);
7013 ofpbuf_put(request, &gid, sizeof gid);
7023 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7024 struct ofp11_bucket_counter bucket_cnts[])
7028 for (i = 0; i < gs->n_buckets; i++) {
7029 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7030 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7035 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7036 struct ofp11_group_stats *gs11, size_t length,
7037 struct ofp11_bucket_counter bucket_cnts[])
7039 memset(gs11, 0, sizeof *gs11);
7040 gs11->length = htons(length);
7041 gs11->group_id = htonl(gs->group_id);
7042 gs11->ref_count = htonl(gs->ref_count);
7043 gs11->packet_count = htonll(gs->packet_count);
7044 gs11->byte_count = htonll(gs->byte_count);
7045 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7049 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7050 struct ofp13_group_stats *gs13, size_t length,
7051 struct ofp11_bucket_counter bucket_cnts[])
7053 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7054 gs13->duration_sec = htonl(gs->duration_sec);
7055 gs13->duration_nsec = htonl(gs->duration_nsec);
7059 /* Encodes 'gs' properly for the format of the list of group statistics
7060 * replies already begun in 'replies' and appends it to the list. 'replies'
7061 * must have originally been initialized with ofpmp_init(). */
7063 ofputil_append_group_stats(struct list *replies,
7064 const struct ofputil_group_stats *gs)
7066 size_t bucket_counter_size;
7067 struct ofp11_bucket_counter *bucket_counters;
7070 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7072 switch (ofpmp_version(replies)) {
7074 case OFP12_VERSION:{
7075 struct ofp11_group_stats *gs11;
7077 length = sizeof *gs11 + bucket_counter_size;
7078 gs11 = ofpmp_append(replies, length);
7079 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7080 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7086 case OFP15_VERSION: {
7087 struct ofp13_group_stats *gs13;
7089 length = sizeof *gs13 + bucket_counter_size;
7090 gs13 = ofpmp_append(replies, length);
7091 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7092 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7101 /* Returns an OpenFlow group features request for OpenFlow version
7104 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7106 struct ofpbuf *request = NULL;
7108 switch (ofp_version) {
7111 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7112 "(\'-O OpenFlow12\')");
7117 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7127 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7128 * group features request 'request'. */
7130 ofputil_encode_group_features_reply(
7131 const struct ofputil_group_features *features,
7132 const struct ofp_header *request)
7134 struct ofp12_group_features_stats *ogf;
7135 struct ofpbuf *reply;
7138 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7139 request->version, request->xid, 0);
7140 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7141 ogf->types = htonl(features->types);
7142 ogf->capabilities = htonl(features->capabilities);
7143 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7144 ogf->max_groups[i] = htonl(features->max_groups[i]);
7145 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7152 /* Decodes group features reply 'oh' into 'features'. */
7154 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7155 struct ofputil_group_features *features)
7157 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7160 features->types = ntohl(ogf->types);
7161 features->capabilities = ntohl(ogf->capabilities);
7162 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7163 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7164 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7165 ogf->actions[i], oh->version);
7169 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7170 * group ID and stores the latter in '*group_id'.
7171 * Returns 0 if successful, otherwise an OFPERR_* number. */
7173 ofputil_decode_group_stats_request(const struct ofp_header *request,
7176 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7177 *group_id = ntohl(gsr11->group_id);
7181 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7182 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7183 * caller to eventually free.
7185 * Multiple group stats replies can be packed into a single OpenFlow message.
7186 * Calling this function multiple times for a single 'msg' iterates through the
7187 * replies. The caller must initially leave 'msg''s layer pointers null and
7188 * not modify them between calls.
7190 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7191 * otherwise a positive errno value. */
7193 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7194 struct ofputil_group_stats *gs)
7196 struct ofp11_bucket_counter *obc;
7197 struct ofp11_group_stats *ogs11;
7204 gs->bucket_stats = NULL;
7206 ? ofpraw_decode(&raw, msg->frame)
7207 : ofpraw_pull(&raw, msg));
7212 if (!ofpbuf_size(msg)) {
7216 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7217 base_len = sizeof *ogs11;
7218 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7219 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7220 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7221 struct ofp13_group_stats *ogs13;
7223 base_len = sizeof *ogs13;
7224 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7227 gs->duration_sec = ntohl(ogs13->duration_sec);
7228 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7237 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7238 ofpraw_get_name(raw), ofpbuf_size(msg));
7239 return OFPERR_OFPBRC_BAD_LEN;
7241 length = ntohs(ogs11->length);
7242 if (length < sizeof base_len) {
7243 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7244 ofpraw_get_name(raw), length);
7245 return OFPERR_OFPBRC_BAD_LEN;
7248 gs->group_id = ntohl(ogs11->group_id);
7249 gs->ref_count = ntohl(ogs11->ref_count);
7250 gs->packet_count = ntohll(ogs11->packet_count);
7251 gs->byte_count = ntohll(ogs11->byte_count);
7253 gs->n_buckets = (length - base_len) / sizeof *obc;
7254 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7256 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7257 ofpraw_get_name(raw), ofpbuf_size(msg));
7258 return OFPERR_OFPBRC_BAD_LEN;
7261 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7262 for (i = 0; i < gs->n_buckets; i++) {
7263 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7264 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7270 /* Appends a group stats reply that contains the data in 'gds' to those already
7271 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7272 * initialized with ofpmp_init(). */
7274 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7275 struct list *buckets,
7276 struct list *replies)
7278 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7279 enum ofp_version version = ofpmp_version(replies);
7280 struct ofp11_group_desc_stats *ogds;
7281 struct ofputil_bucket *bucket;
7284 start_ogds = ofpbuf_size(reply);
7285 ofpbuf_put_zeros(reply, sizeof *ogds);
7286 LIST_FOR_EACH (bucket, list_node, buckets) {
7287 struct ofp11_bucket *ob;
7290 start_ob = ofpbuf_size(reply);
7291 ofpbuf_put_zeros(reply, sizeof *ob);
7292 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7294 ob = ofpbuf_at_assert(reply, start_ob, sizeof *ob);
7295 ob->len = htons(ofpbuf_size(reply) - start_ob);
7296 ob->weight = htons(bucket->weight);
7297 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7298 ob->watch_group = htonl(bucket->watch_group);
7300 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7301 ogds->length = htons(ofpbuf_size(reply) - start_ogds);
7302 ogds->type = gds->type;
7303 ogds->group_id = htonl(gds->group_id);
7305 ofpmp_postappend(replies, start_ogds);
7309 ofputil_pull_buckets(struct ofpbuf *msg, size_t buckets_length,
7310 enum ofp_version version, struct list *buckets)
7312 struct ofp11_bucket *ob;
7315 while (buckets_length > 0) {
7316 struct ofputil_bucket *bucket;
7317 struct ofpbuf ofpacts;
7321 ob = (buckets_length >= sizeof *ob
7322 ? ofpbuf_try_pull(msg, sizeof *ob)
7325 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
7327 return OFPERR_OFPGMFC_BAD_BUCKET;
7330 ob_len = ntohs(ob->len);
7331 if (ob_len < sizeof *ob) {
7332 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7333 "%"PRIuSIZE" is not valid", ob_len);
7334 return OFPERR_OFPGMFC_BAD_BUCKET;
7335 } else if (ob_len > buckets_length) {
7336 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7337 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
7338 ob_len, buckets_length);
7339 return OFPERR_OFPGMFC_BAD_BUCKET;
7341 buckets_length -= ob_len;
7343 ofpbuf_init(&ofpacts, 0);
7344 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
7347 ofpbuf_uninit(&ofpacts);
7348 ofputil_bucket_list_destroy(buckets);
7352 bucket = xzalloc(sizeof *bucket);
7353 bucket->weight = ntohs(ob->weight);
7354 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
7356 ofpbuf_uninit(&ofpacts);
7357 ofputil_bucket_list_destroy(buckets);
7358 return OFPERR_OFPGMFC_BAD_WATCH;
7360 bucket->watch_group = ntohl(ob->watch_group);
7361 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
7362 bucket->ofpacts_len = ofpbuf_size(&ofpacts);
7363 list_push_back(buckets, &bucket->list_node);
7369 /* Converts a group description reply in 'msg' into an abstract
7370 * ofputil_group_desc in 'gd'.
7372 * Multiple group description replies can be packed into a single OpenFlow
7373 * message. Calling this function multiple times for a single 'msg' iterates
7374 * through the replies. The caller must initially leave 'msg''s layer pointers
7375 * null and not modify them between calls.
7377 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7378 * otherwise a positive errno value. */
7380 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
7381 struct ofpbuf *msg, enum ofp_version version)
7383 struct ofp11_group_desc_stats *ogds;
7387 ofpraw_pull_assert(msg);
7390 if (!ofpbuf_size(msg)) {
7394 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
7396 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
7397 "leftover bytes at end", ofpbuf_size(msg));
7398 return OFPERR_OFPBRC_BAD_LEN;
7400 gd->type = ogds->type;
7401 gd->group_id = ntohl(ogds->group_id);
7403 length = ntohs(ogds->length);
7404 if (length < sizeof *ogds || length - sizeof *ogds > ofpbuf_size(msg)) {
7405 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
7406 "length %"PRIuSIZE, length);
7407 return OFPERR_OFPBRC_BAD_LEN;
7410 return ofputil_pull_buckets(msg, length - sizeof *ogds, version,
7414 /* Converts abstract group mod 'gm' into a message for OpenFlow version
7415 * 'ofp_version' and returns the message. */
7417 ofputil_encode_group_mod(enum ofp_version ofp_version,
7418 const struct ofputil_group_mod *gm)
7421 struct ofp11_group_mod *ogm;
7423 size_t start_bucket;
7424 struct ofputil_bucket *bucket;
7425 struct ofp11_bucket *ob;
7427 switch (ofp_version) {
7428 case OFP10_VERSION: {
7429 if (gm->command == OFPGC11_ADD) {
7430 ovs_fatal(0, "add-group needs OpenFlow 1.1 or later "
7431 "(\'-O OpenFlow11\')");
7432 } else if (gm->command == OFPGC11_MODIFY) {
7433 ovs_fatal(0, "mod-group needs OpenFlow 1.1 or later "
7434 "(\'-O OpenFlow11\')");
7436 ovs_fatal(0, "del-groups needs OpenFlow 1.1 or later "
7437 "(\'-O OpenFlow11\')");
7446 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
7447 start_ogm = ofpbuf_size(b);
7448 ofpbuf_put_zeros(b, sizeof *ogm);
7450 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
7451 start_bucket = ofpbuf_size(b);
7452 ofpbuf_put_zeros(b, sizeof *ob);
7453 if (bucket->ofpacts && bucket->ofpacts_len) {
7454 ofpacts_put_openflow_actions(bucket->ofpacts,
7455 bucket->ofpacts_len, b,
7458 ob = ofpbuf_at_assert(b, start_bucket, sizeof *ob);
7459 ob->len = htons(ofpbuf_size(b) - start_bucket);;
7460 ob->weight = htons(bucket->weight);
7461 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7462 ob->watch_group = htonl(bucket->watch_group);
7464 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
7465 ogm->command = htons(gm->command);
7466 ogm->type = gm->type;
7467 ogm->group_id = htonl(gm->group_id);
7478 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
7479 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
7481 ofputil_decode_group_mod(const struct ofp_header *oh,
7482 struct ofputil_group_mod *gm)
7484 const struct ofp11_group_mod *ogm;
7486 struct ofputil_bucket *bucket;
7489 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
7490 ofpraw_pull_assert(&msg);
7492 ogm = ofpbuf_pull(&msg, sizeof *ogm);
7493 gm->command = ntohs(ogm->command);
7494 gm->type = ogm->type;
7495 gm->group_id = ntohl(ogm->group_id);
7497 err = ofputil_pull_buckets(&msg, ofpbuf_size(&msg), oh->version, &gm->buckets);
7502 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
7505 case OFPGT11_INDIRECT:
7506 if (ofputil_bucket_has_liveness(bucket)) {
7507 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
7510 case OFPGT11_SELECT:
7513 if (!ofputil_bucket_has_liveness(bucket)) {
7514 return OFPERR_OFPGMFC_INVALID_GROUP;
7525 /* Parse a queue status request message into 'oqsr'.
7526 * Returns 0 if successful, otherwise an OFPERR_* number. */
7528 ofputil_decode_queue_stats_request(const struct ofp_header *request,
7529 struct ofputil_queue_stats_request *oqsr)
7531 switch ((enum ofp_version)request->version) {
7536 case OFP11_VERSION: {
7537 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
7538 oqsr->queue_id = ntohl(qsr11->queue_id);
7539 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
7542 case OFP10_VERSION: {
7543 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
7544 oqsr->queue_id = ntohl(qsr10->queue_id);
7545 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
7546 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
7547 if (oqsr->port_no == OFPP_ALL) {
7548 oqsr->port_no = OFPP_ANY;
7558 /* Encode a queue statsrequest for 'oqsr', the encoded message
7559 * will be fore Open Flow version 'ofp_version'. Returns message
7560 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
7562 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
7563 const struct ofputil_queue_stats_request *oqsr)
7565 struct ofpbuf *request;
7567 switch (ofp_version) {
7572 case OFP15_VERSION: {
7573 struct ofp11_queue_stats_request *req;
7574 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
7575 req = ofpbuf_put_zeros(request, sizeof *req);
7576 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
7577 req->queue_id = htonl(oqsr->queue_id);
7580 case OFP10_VERSION: {
7581 struct ofp10_queue_stats_request *req;
7582 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
7583 req = ofpbuf_put_zeros(request, sizeof *req);
7584 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
7585 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
7586 ? OFPP_ALL : oqsr->port_no));
7587 req->queue_id = htonl(oqsr->queue_id);
7597 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
7600 ofputil_count_queue_stats(const struct ofp_header *oh)
7602 struct ofputil_queue_stats qs;
7606 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7607 ofpraw_pull_assert(&b);
7608 while (!ofputil_decode_queue_stats(&qs, &b)) {
7615 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
7616 const struct ofp10_queue_stats *qs10)
7618 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
7619 oqs->queue_id = ntohl(qs10->queue_id);
7620 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
7621 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
7622 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
7623 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
7629 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
7630 const struct ofp11_queue_stats *qs11)
7634 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
7639 oqs->queue_id = ntohl(qs11->queue_id);
7640 oqs->tx_bytes = ntohll(qs11->tx_bytes);
7641 oqs->tx_packets = ntohll(qs11->tx_packets);
7642 oqs->tx_errors = ntohll(qs11->tx_errors);
7643 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
7649 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
7650 const struct ofp13_queue_stats *qs13)
7652 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
7654 oqs->duration_sec = ntohl(qs13->duration_sec);
7655 oqs->duration_nsec = ntohl(qs13->duration_nsec);
7662 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
7665 const struct ofp14_queue_stats *qs14;
7668 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
7670 return OFPERR_OFPBRC_BAD_LEN;
7673 len = ntohs(qs14->length);
7674 if (len < sizeof *qs14 || len - sizeof *qs14 > ofpbuf_size(msg)) {
7675 return OFPERR_OFPBRC_BAD_LEN;
7677 ofpbuf_pull(msg, len - sizeof *qs14);
7679 /* No properties yet defined, so ignore them for now. */
7681 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
7684 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
7685 * ofputil_queue_stats in 'qs'.
7687 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
7688 * message. Calling this function multiple times for a single 'msg' iterates
7689 * through the replies. The caller must initially leave 'msg''s layer pointers
7690 * null and not modify them between calls.
7692 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7693 * otherwise a positive errno value. */
7695 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
7701 ? ofpraw_decode(&raw, msg->frame)
7702 : ofpraw_pull(&raw, msg));
7707 if (!ofpbuf_size(msg)) {
7709 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
7710 return ofputil_pull_ofp14_queue_stats(qs, msg);
7711 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
7712 const struct ofp13_queue_stats *qs13;
7714 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
7718 return ofputil_queue_stats_from_ofp13(qs, qs13);
7719 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
7720 const struct ofp11_queue_stats *qs11;
7722 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
7726 return ofputil_queue_stats_from_ofp11(qs, qs11);
7727 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
7728 const struct ofp10_queue_stats *qs10;
7730 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
7734 return ofputil_queue_stats_from_ofp10(qs, qs10);
7740 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
7741 "bytes at end", ofpbuf_size(msg));
7742 return OFPERR_OFPBRC_BAD_LEN;
7746 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
7747 struct ofp10_queue_stats *qs10)
7749 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
7750 memset(qs10->pad, 0, sizeof qs10->pad);
7751 qs10->queue_id = htonl(oqs->queue_id);
7752 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
7753 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
7754 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
7758 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
7759 struct ofp11_queue_stats *qs11)
7761 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
7762 qs11->queue_id = htonl(oqs->queue_id);
7763 qs11->tx_bytes = htonll(oqs->tx_bytes);
7764 qs11->tx_packets = htonll(oqs->tx_packets);
7765 qs11->tx_errors = htonll(oqs->tx_errors);
7769 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
7770 struct ofp13_queue_stats *qs13)
7772 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
7773 if (oqs->duration_sec != UINT32_MAX) {
7774 qs13->duration_sec = htonl(oqs->duration_sec);
7775 qs13->duration_nsec = htonl(oqs->duration_nsec);
7777 qs13->duration_sec = OVS_BE32_MAX;
7778 qs13->duration_nsec = OVS_BE32_MAX;
7783 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
7784 struct ofp14_queue_stats *qs14)
7786 qs14->length = htons(sizeof *qs14);
7787 memset(qs14->pad, 0, sizeof qs14->pad);
7788 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
7792 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
7794 ofputil_append_queue_stat(struct list *replies,
7795 const struct ofputil_queue_stats *oqs)
7797 switch (ofpmp_version(replies)) {
7798 case OFP13_VERSION: {
7799 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7800 ofputil_queue_stats_to_ofp13(oqs, reply);
7805 case OFP11_VERSION: {
7806 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7807 ofputil_queue_stats_to_ofp11(oqs, reply);
7811 case OFP10_VERSION: {
7812 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7813 ofputil_queue_stats_to_ofp10(oqs, reply);
7818 case OFP15_VERSION: {
7819 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7820 ofputil_queue_stats_to_ofp14(oqs, reply);
7830 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
7831 struct ofputil_bundle_ctrl_msg *msg)
7835 const struct ofp14_bundle_ctrl_msg *m;
7837 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7838 raw = ofpraw_pull_assert(&b);
7839 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
7842 msg->bundle_id = ntohl(m->bundle_id);
7843 msg->type = ntohs(m->type);
7844 msg->flags = ntohs(m->flags);
7850 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
7851 struct ofputil_bundle_ctrl_msg *msg)
7854 struct ofp14_bundle_ctrl_msg *m;
7856 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
7857 m = ofpbuf_put_zeros(buf, sizeof *m);
7859 m->bundle_id = htonl(msg->bundle_id);
7860 m->type = htons(msg->type);
7861 m->flags = htons(msg->flags);
7867 ofputil_decode_bundle_add(const struct ofp_header *oh,
7868 struct ofputil_bundle_add_msg *msg)
7870 const struct ofp14_bundle_ctrl_msg *m;
7875 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7876 raw = ofpraw_pull_assert(&b);
7877 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
7879 m = ofpbuf_pull(&b, sizeof *m);
7880 msg->bundle_id = ntohl(m->bundle_id);
7881 msg->flags = ntohs(m->flags);
7883 msg->msg = ofpbuf_data(&b);
7884 inner_len = ntohs(msg->msg->length);
7885 if (inner_len < sizeof(struct ofp_header) || inner_len > ofpbuf_size(&b)) {
7886 return OFPERR_OFPBFC_MSG_BAD_LEN;
7893 ofputil_encode_bundle_add(enum ofp_version ofp_version,
7894 struct ofputil_bundle_add_msg *msg)
7896 struct ofpbuf *request;
7897 struct ofp14_bundle_ctrl_msg *m;
7899 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version, 0);
7900 m = ofpbuf_put_zeros(request, sizeof *m);
7902 m->bundle_id = htonl(msg->bundle_id);
7903 m->flags = htons(msg->flags);
7904 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));