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 error = ofpacts_pull_openflow_instructions(&b, ofpbuf_size(&b), oh->version,
1674 /* Translate the message. */
1675 fm->priority = ntohs(ofm->priority);
1676 if (ofm->command == OFPFC_ADD
1677 || (oh->version == OFP11_VERSION
1678 && (ofm->command == OFPFC_MODIFY ||
1679 ofm->command == OFPFC_MODIFY_STRICT)
1680 && ofm->cookie_mask == htonll(0))) {
1681 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1682 * not match on the cookie is treated as an "add" if there is no
1684 fm->cookie = htonll(0);
1685 fm->cookie_mask = htonll(0);
1686 fm->new_cookie = ofm->cookie;
1688 fm->cookie = ofm->cookie;
1689 fm->cookie_mask = ofm->cookie_mask;
1690 fm->new_cookie = OVS_BE64_MAX;
1692 fm->modify_cookie = false;
1693 fm->command = ofm->command;
1697 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1698 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1699 fm->table_id = ofm->table_id;
1700 if (fm->table_id == OFPTT_ALL
1701 && (oh->version == OFP11_VERSION
1702 || (ofm->command != OFPFC_DELETE &&
1703 ofm->command != OFPFC_DELETE_STRICT))) {
1704 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1707 fm->idle_timeout = ntohs(ofm->idle_timeout);
1708 fm->hard_timeout = ntohs(ofm->hard_timeout);
1709 fm->buffer_id = ntohl(ofm->buffer_id);
1710 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1715 fm->out_group = (ofm->command == OFPFC_DELETE ||
1716 ofm->command == OFPFC_DELETE_STRICT
1717 ? ntohl(ofm->out_group)
1719 raw_flags = ofm->flags;
1723 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1724 /* Standard OpenFlow 1.0 flow_mod. */
1725 const struct ofp10_flow_mod *ofm;
1727 /* Get the ofp10_flow_mod. */
1728 ofm = ofpbuf_pull(&b, sizeof *ofm);
1730 /* Translate the rule. */
1731 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1732 ofputil_normalize_match(&fm->match);
1734 /* Now get the actions. */
1735 error = ofpacts_pull_openflow_actions(&b, ofpbuf_size(&b), oh->version,
1741 /* OpenFlow 1.0 says that exact-match rules have to have the
1742 * highest possible priority. */
1743 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1744 ? ntohs(ofm->priority)
1747 /* Translate the message. */
1748 command = ntohs(ofm->command);
1749 fm->cookie = htonll(0);
1750 fm->cookie_mask = htonll(0);
1751 fm->new_cookie = ofm->cookie;
1752 fm->idle_timeout = ntohs(ofm->idle_timeout);
1753 fm->hard_timeout = ntohs(ofm->hard_timeout);
1754 fm->buffer_id = ntohl(ofm->buffer_id);
1755 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1756 fm->out_group = OFPG11_ANY;
1757 raw_flags = ofm->flags;
1758 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1759 /* Nicira extended flow_mod. */
1760 const struct nx_flow_mod *nfm;
1762 /* Dissect the message. */
1763 nfm = ofpbuf_pull(&b, sizeof *nfm);
1764 error = nx_pull_match(&b, ntohs(nfm->match_len),
1765 &fm->match, &fm->cookie, &fm->cookie_mask);
1769 error = ofpacts_pull_openflow_actions(&b, ofpbuf_size(&b), oh->version,
1775 /* Translate the message. */
1776 command = ntohs(nfm->command);
1777 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1778 /* Flow additions may only set a new cookie, not match an
1779 * existing cookie. */
1780 return OFPERR_NXBRC_NXM_INVALID;
1782 fm->priority = ntohs(nfm->priority);
1783 fm->new_cookie = nfm->cookie;
1784 fm->idle_timeout = ntohs(nfm->idle_timeout);
1785 fm->hard_timeout = ntohs(nfm->hard_timeout);
1786 fm->buffer_id = ntohl(nfm->buffer_id);
1787 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1788 fm->out_group = OFPG11_ANY;
1789 raw_flags = nfm->flags;
1794 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1795 if (protocol & OFPUTIL_P_TID) {
1796 fm->command = command & 0xff;
1797 fm->table_id = command >> 8;
1799 fm->command = command;
1800 fm->table_id = 0xff;
1804 fm->ofpacts = ofpbuf_data(ofpacts);
1805 fm->ofpacts_len = ofpbuf_size(ofpacts);
1807 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1808 oh->version, &fm->flags);
1813 if (fm->flags & OFPUTIL_FF_EMERG) {
1814 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1815 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1817 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1818 * or hard_timeout is nonzero. Otherwise, there is no good error
1819 * code, so just state that the flow table is full. */
1820 return (fm->hard_timeout || fm->idle_timeout
1821 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1822 : OFPERR_OFPFMFC_TABLE_FULL);
1825 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1826 &fm->match.flow, max_port,
1827 fm->table_id, max_table, protocol);
1831 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1832 struct ofpbuf *bands)
1834 const struct ofp13_meter_band_header *ombh;
1835 struct ofputil_meter_band *mb;
1838 ombh = ofpbuf_try_pull(msg, len);
1840 return OFPERR_OFPBRC_BAD_LEN;
1843 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1844 size_t ombh_len = ntohs(ombh->len);
1845 /* All supported band types have the same length. */
1846 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1847 return OFPERR_OFPBRC_BAD_LEN;
1849 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1850 mb->type = ntohs(ombh->type);
1851 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1852 return OFPERR_OFPMMFC_BAD_BAND;
1854 mb->rate = ntohl(ombh->rate);
1855 mb->burst_size = ntohl(ombh->burst_size);
1856 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1857 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1860 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1861 (char *) ombh + ombh_len);
1864 return OFPERR_OFPBRC_BAD_LEN;
1871 ofputil_decode_meter_mod(const struct ofp_header *oh,
1872 struct ofputil_meter_mod *mm,
1873 struct ofpbuf *bands)
1875 const struct ofp13_meter_mod *omm;
1878 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1879 ofpraw_pull_assert(&b);
1880 omm = ofpbuf_pull(&b, sizeof *omm);
1882 /* Translate the message. */
1883 mm->command = ntohs(omm->command);
1884 if (mm->command != OFPMC13_ADD &&
1885 mm->command != OFPMC13_MODIFY &&
1886 mm->command != OFPMC13_DELETE) {
1887 return OFPERR_OFPMMFC_BAD_COMMAND;
1889 mm->meter.meter_id = ntohl(omm->meter_id);
1891 if (mm->command == OFPMC13_DELETE) {
1892 mm->meter.flags = 0;
1893 mm->meter.n_bands = 0;
1894 mm->meter.bands = NULL;
1898 mm->meter.flags = ntohs(omm->flags);
1899 if (mm->meter.flags & OFPMF13_KBPS &&
1900 mm->meter.flags & OFPMF13_PKTPS) {
1901 return OFPERR_OFPMMFC_BAD_FLAGS;
1903 mm->meter.bands = ofpbuf_data(bands);
1905 error = ofputil_pull_bands(&b, ofpbuf_size(&b), &mm->meter.n_bands, bands);
1914 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1916 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1917 *meter_id = ntohl(omr->meter_id);
1921 ofputil_encode_meter_request(enum ofp_version ofp_version,
1922 enum ofputil_meter_request_type type,
1930 case OFPUTIL_METER_CONFIG:
1931 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1933 case OFPUTIL_METER_STATS:
1934 raw = OFPRAW_OFPST13_METER_REQUEST;
1937 case OFPUTIL_METER_FEATURES:
1938 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1942 msg = ofpraw_alloc(raw, ofp_version, 0);
1944 if (type != OFPUTIL_METER_FEATURES) {
1945 struct ofp13_meter_multipart_request *omr;
1946 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1947 omr->meter_id = htonl(meter_id);
1953 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1958 for (n = 0; n < n_bands; ++n) {
1959 /* Currently all band types have same size. */
1960 struct ofp13_meter_band_dscp_remark *ombh;
1961 size_t ombh_len = sizeof *ombh;
1963 ombh = ofpbuf_put_zeros(msg, ombh_len);
1965 ombh->type = htons(mb->type);
1966 ombh->len = htons(ombh_len);
1967 ombh->rate = htonl(mb->rate);
1968 ombh->burst_size = htonl(mb->burst_size);
1969 ombh->prec_level = mb->prec_level;
1975 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1977 ofputil_append_meter_config(struct list *replies,
1978 const struct ofputil_meter_config *mc)
1980 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1981 size_t start_ofs = ofpbuf_size(msg);
1982 struct ofp13_meter_config *reply = ofpbuf_put_uninit(msg, sizeof *reply);
1983 reply->flags = htons(mc->flags);
1984 reply->meter_id = htonl(mc->meter_id);
1986 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1988 reply->length = htons(ofpbuf_size(msg) - start_ofs);
1990 ofpmp_postappend(replies, start_ofs);
1993 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1995 ofputil_append_meter_stats(struct list *replies,
1996 const struct ofputil_meter_stats *ms)
1998 struct ofp13_meter_stats *reply;
2002 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
2003 reply = ofpmp_append(replies, len);
2005 reply->meter_id = htonl(ms->meter_id);
2006 reply->len = htons(len);
2007 memset(reply->pad, 0, sizeof reply->pad);
2008 reply->flow_count = htonl(ms->flow_count);
2009 reply->packet_in_count = htonll(ms->packet_in_count);
2010 reply->byte_in_count = htonll(ms->byte_in_count);
2011 reply->duration_sec = htonl(ms->duration_sec);
2012 reply->duration_nsec = htonl(ms->duration_nsec);
2014 for (n = 0; n < ms->n_bands; ++n) {
2015 const struct ofputil_meter_band_stats *src = &ms->bands[n];
2016 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
2018 dst->packet_band_count = htonll(src->packet_count);
2019 dst->byte_band_count = htonll(src->byte_count);
2023 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
2024 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
2025 * 'bands'. The caller must have initialized 'bands' and retains ownership of
2026 * it across the call.
2028 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
2029 * message. Calling this function multiple times for a single 'msg' iterates
2030 * through the replies. 'bands' is cleared for each reply.
2032 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2033 * otherwise a positive errno value. */
2035 ofputil_decode_meter_config(struct ofpbuf *msg,
2036 struct ofputil_meter_config *mc,
2037 struct ofpbuf *bands)
2039 const struct ofp13_meter_config *omc;
2042 /* Pull OpenFlow headers for the first call. */
2044 ofpraw_pull_assert(msg);
2047 if (!ofpbuf_size(msg)) {
2051 omc = ofpbuf_try_pull(msg, sizeof *omc);
2053 VLOG_WARN_RL(&bad_ofmsg_rl,
2054 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2056 return OFPERR_OFPBRC_BAD_LEN;
2059 ofpbuf_clear(bands);
2060 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2061 &mc->n_bands, bands);
2065 mc->meter_id = ntohl(omc->meter_id);
2066 mc->flags = ntohs(omc->flags);
2067 mc->bands = ofpbuf_data(bands);
2073 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2074 struct ofpbuf *bands)
2076 const struct ofp13_meter_band_stats *ombs;
2077 struct ofputil_meter_band_stats *mbs;
2080 ombs = ofpbuf_try_pull(msg, len);
2082 return OFPERR_OFPBRC_BAD_LEN;
2085 n = len / sizeof *ombs;
2086 if (len != n * sizeof *ombs) {
2087 return OFPERR_OFPBRC_BAD_LEN;
2090 mbs = ofpbuf_put_uninit(bands, len);
2092 for (i = 0; i < n; ++i) {
2093 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2094 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2100 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2101 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2102 * decoded into 'bands'.
2104 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2105 * message. Calling this function multiple times for a single 'msg' iterates
2106 * through the replies. 'bands' is cleared for each reply.
2108 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2109 * otherwise a positive errno value. */
2111 ofputil_decode_meter_stats(struct ofpbuf *msg,
2112 struct ofputil_meter_stats *ms,
2113 struct ofpbuf *bands)
2115 const struct ofp13_meter_stats *oms;
2118 /* Pull OpenFlow headers for the first call. */
2120 ofpraw_pull_assert(msg);
2123 if (!ofpbuf_size(msg)) {
2127 oms = ofpbuf_try_pull(msg, sizeof *oms);
2129 VLOG_WARN_RL(&bad_ofmsg_rl,
2130 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2132 return OFPERR_OFPBRC_BAD_LEN;
2135 ofpbuf_clear(bands);
2136 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2137 &ms->n_bands, bands);
2141 ms->meter_id = ntohl(oms->meter_id);
2142 ms->flow_count = ntohl(oms->flow_count);
2143 ms->packet_in_count = ntohll(oms->packet_in_count);
2144 ms->byte_in_count = ntohll(oms->byte_in_count);
2145 ms->duration_sec = ntohl(oms->duration_sec);
2146 ms->duration_nsec = ntohl(oms->duration_nsec);
2147 ms->bands = ofpbuf_data(bands);
2153 ofputil_decode_meter_features(const struct ofp_header *oh,
2154 struct ofputil_meter_features *mf)
2156 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2158 mf->max_meters = ntohl(omf->max_meter);
2159 mf->band_types = ntohl(omf->band_types);
2160 mf->capabilities = ntohl(omf->capabilities);
2161 mf->max_bands = omf->max_bands;
2162 mf->max_color = omf->max_color;
2166 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2167 const struct ofp_header *request)
2169 struct ofpbuf *reply;
2170 struct ofp13_meter_features *omf;
2172 reply = ofpraw_alloc_stats_reply(request, 0);
2173 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2175 omf->max_meter = htonl(mf->max_meters);
2176 omf->band_types = htonl(mf->band_types);
2177 omf->capabilities = htonl(mf->capabilities);
2178 omf->max_bands = mf->max_bands;
2179 omf->max_color = mf->max_color;
2185 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2186 const struct ofputil_meter_mod *mm)
2190 struct ofp13_meter_mod *omm;
2192 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2193 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2194 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2195 omm->command = htons(mm->command);
2196 if (mm->command != OFPMC13_DELETE) {
2197 omm->flags = htons(mm->meter.flags);
2199 omm->meter_id = htonl(mm->meter.meter_id);
2201 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2203 ofpmsg_update_length(msg);
2208 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2209 enum ofputil_protocol protocol)
2211 return htons(protocol & OFPUTIL_P_TID
2212 ? (fm->command & 0xff) | (fm->table_id << 8)
2216 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2217 * 'protocol' and returns the message. */
2219 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2220 enum ofputil_protocol protocol)
2222 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2223 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2227 case OFPUTIL_P_OF11_STD:
2228 case OFPUTIL_P_OF12_OXM:
2229 case OFPUTIL_P_OF13_OXM:
2230 case OFPUTIL_P_OF14_OXM:
2231 case OFPUTIL_P_OF15_OXM: {
2232 struct ofp11_flow_mod *ofm;
2235 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2236 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2237 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2238 if ((protocol == OFPUTIL_P_OF11_STD
2239 && (fm->command == OFPFC_MODIFY ||
2240 fm->command == OFPFC_MODIFY_STRICT)
2241 && fm->cookie_mask == htonll(0))
2242 || fm->command == OFPFC_ADD) {
2243 ofm->cookie = fm->new_cookie;
2245 ofm->cookie = fm->cookie;
2247 ofm->cookie_mask = fm->cookie_mask;
2248 if (fm->table_id != OFPTT_ALL
2249 || (protocol != OFPUTIL_P_OF11_STD
2250 && (fm->command == OFPFC_DELETE ||
2251 fm->command == OFPFC_DELETE_STRICT))) {
2252 ofm->table_id = fm->table_id;
2256 ofm->command = fm->command;
2257 ofm->idle_timeout = htons(fm->idle_timeout);
2258 ofm->hard_timeout = htons(fm->hard_timeout);
2259 ofm->priority = htons(fm->priority);
2260 ofm->buffer_id = htonl(fm->buffer_id);
2261 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2262 ofm->out_group = htonl(fm->out_group);
2263 ofm->flags = raw_flags;
2264 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2265 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2270 case OFPUTIL_P_OF10_STD:
2271 case OFPUTIL_P_OF10_STD_TID: {
2272 struct ofp10_flow_mod *ofm;
2274 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2276 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2277 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2278 ofm->cookie = fm->new_cookie;
2279 ofm->command = ofputil_tid_command(fm, protocol);
2280 ofm->idle_timeout = htons(fm->idle_timeout);
2281 ofm->hard_timeout = htons(fm->hard_timeout);
2282 ofm->priority = htons(fm->priority);
2283 ofm->buffer_id = htonl(fm->buffer_id);
2284 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2285 ofm->flags = raw_flags;
2286 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2291 case OFPUTIL_P_OF10_NXM:
2292 case OFPUTIL_P_OF10_NXM_TID: {
2293 struct nx_flow_mod *nfm;
2296 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2297 NXM_TYPICAL_LEN + fm->ofpacts_len);
2298 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2299 nfm->command = ofputil_tid_command(fm, protocol);
2300 nfm->cookie = fm->new_cookie;
2301 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2302 nfm = ofpbuf_l3(msg);
2303 nfm->idle_timeout = htons(fm->idle_timeout);
2304 nfm->hard_timeout = htons(fm->hard_timeout);
2305 nfm->priority = htons(fm->priority);
2306 nfm->buffer_id = htonl(fm->buffer_id);
2307 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2308 nfm->flags = raw_flags;
2309 nfm->match_len = htons(match_len);
2310 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2319 ofpmsg_update_length(msg);
2324 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2325 const struct ofp10_flow_stats_request *ofsr,
2328 fsr->aggregate = aggregate;
2329 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2330 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2331 fsr->out_group = OFPG11_ANY;
2332 fsr->table_id = ofsr->table_id;
2333 fsr->cookie = fsr->cookie_mask = htonll(0);
2339 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2340 struct ofpbuf *b, bool aggregate)
2342 const struct ofp11_flow_stats_request *ofsr;
2345 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2346 fsr->aggregate = aggregate;
2347 fsr->table_id = ofsr->table_id;
2348 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2352 fsr->out_group = ntohl(ofsr->out_group);
2353 fsr->cookie = ofsr->cookie;
2354 fsr->cookie_mask = ofsr->cookie_mask;
2355 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2364 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2365 struct ofpbuf *b, bool aggregate)
2367 const struct nx_flow_stats_request *nfsr;
2370 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2371 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2372 &fsr->cookie, &fsr->cookie_mask);
2376 if (ofpbuf_size(b)) {
2377 return OFPERR_OFPBRC_BAD_LEN;
2380 fsr->aggregate = aggregate;
2381 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2382 fsr->out_group = OFPG11_ANY;
2383 fsr->table_id = nfsr->table_id;
2388 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2389 * 'port', suitable for OpenFlow version 'version'. */
2391 ofputil_encode_queue_get_config_request(enum ofp_version version,
2394 struct ofpbuf *request;
2396 if (version == OFP10_VERSION) {
2397 struct ofp10_queue_get_config_request *qgcr10;
2399 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2401 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2402 qgcr10->port = htons(ofp_to_u16(port));
2404 struct ofp11_queue_get_config_request *qgcr11;
2406 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2408 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2409 qgcr11->port = ofputil_port_to_ofp11(port);
2415 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2416 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2419 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2422 const struct ofp10_queue_get_config_request *qgcr10;
2423 const struct ofp11_queue_get_config_request *qgcr11;
2427 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2428 raw = ofpraw_pull_assert(&b);
2430 switch ((int) raw) {
2431 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2432 qgcr10 = ofpbuf_data(&b);
2433 *port = u16_to_ofp(ntohs(qgcr10->port));
2436 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2437 qgcr11 = ofpbuf_data(&b);
2438 return ofputil_port_from_ofp11(qgcr11->port, port);
2444 /* Constructs and returns the beginning of a reply to
2445 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2446 * individual queues with ofputil_append_queue_get_config_reply(). */
2448 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2450 struct ofp10_queue_get_config_reply *qgcr10;
2451 struct ofp11_queue_get_config_reply *qgcr11;
2452 struct ofpbuf *reply;
2458 error = ofputil_decode_queue_get_config_request(oh, &port);
2461 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2462 raw = ofpraw_pull_assert(&b);
2464 switch ((int) raw) {
2465 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2466 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2468 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2469 qgcr10->port = htons(ofp_to_u16(port));
2472 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2473 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2475 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2476 qgcr11->port = ofputil_port_to_ofp11(port);
2487 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2490 if (rate != UINT16_MAX) {
2491 struct ofp_queue_prop_rate *oqpr;
2493 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2494 oqpr->prop_header.property = htons(property);
2495 oqpr->prop_header.len = htons(sizeof *oqpr);
2496 oqpr->rate = htons(rate);
2500 /* Appends a queue description for 'queue_id' to the
2501 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2503 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2504 const struct ofputil_queue_config *oqc)
2506 const struct ofp_header *oh = ofpbuf_data(reply);
2507 size_t start_ofs, len_ofs;
2510 start_ofs = ofpbuf_size(reply);
2511 if (oh->version < OFP12_VERSION) {
2512 struct ofp10_packet_queue *opq10;
2514 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2515 opq10->queue_id = htonl(oqc->queue_id);
2516 len_ofs = (char *) &opq10->len - (char *) ofpbuf_data(reply);
2518 struct ofp11_queue_get_config_reply *qgcr11;
2519 struct ofp12_packet_queue *opq12;
2522 qgcr11 = ofpbuf_l3(reply);
2523 port = qgcr11->port;
2525 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2527 opq12->queue_id = htonl(oqc->queue_id);
2528 len_ofs = (char *) &opq12->len - (char *) ofpbuf_data(reply);
2531 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2532 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2534 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2535 *len = htons(ofpbuf_size(reply) - start_ofs);
2538 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2539 * stores in '*port' the port that the reply is about. The caller may call
2540 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2541 * queues included in the reply. Returns 0 if successful, otherwise an
2544 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2546 const struct ofp10_queue_get_config_reply *qgcr10;
2547 const struct ofp11_queue_get_config_reply *qgcr11;
2550 raw = ofpraw_pull_assert(reply);
2551 switch ((int) raw) {
2552 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2553 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2554 *port = u16_to_ofp(ntohs(qgcr10->port));
2557 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2558 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2559 return ofputil_port_from_ofp11(qgcr11->port, port);
2566 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2568 const struct ofp_queue_prop_rate *oqpr;
2570 if (hdr->len == htons(sizeof *oqpr)) {
2571 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2572 *rate = ntohs(oqpr->rate);
2575 return OFPERR_OFPBRC_BAD_LEN;
2579 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2580 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2581 * must already have pulled off the main header.
2583 * This function returns EOF if the last queue has already been decoded, 0 if a
2584 * queue was successfully decoded into '*queue', or an ofperr if there was a
2585 * problem decoding 'reply'. */
2587 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2588 struct ofputil_queue_config *queue)
2590 const struct ofp_header *oh;
2591 unsigned int opq_len;
2594 if (!ofpbuf_size(reply)) {
2598 queue->min_rate = UINT16_MAX;
2599 queue->max_rate = UINT16_MAX;
2602 if (oh->version < OFP12_VERSION) {
2603 const struct ofp10_packet_queue *opq10;
2605 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2607 return OFPERR_OFPBRC_BAD_LEN;
2609 queue->queue_id = ntohl(opq10->queue_id);
2610 len = ntohs(opq10->len);
2611 opq_len = sizeof *opq10;
2613 const struct ofp12_packet_queue *opq12;
2615 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2617 return OFPERR_OFPBRC_BAD_LEN;
2619 queue->queue_id = ntohl(opq12->queue_id);
2620 len = ntohs(opq12->len);
2621 opq_len = sizeof *opq12;
2624 if (len < opq_len || len > ofpbuf_size(reply) + opq_len || len % 8) {
2625 return OFPERR_OFPBRC_BAD_LEN;
2630 const struct ofp_queue_prop_header *hdr;
2631 unsigned int property;
2632 unsigned int prop_len;
2633 enum ofperr error = 0;
2635 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2636 prop_len = ntohs(hdr->len);
2637 if (prop_len < sizeof *hdr || prop_len > ofpbuf_size(reply) || prop_len % 8) {
2638 return OFPERR_OFPBRC_BAD_LEN;
2641 property = ntohs(hdr->property);
2643 case OFPQT_MIN_RATE:
2644 error = parse_queue_rate(hdr, &queue->min_rate);
2647 case OFPQT_MAX_RATE:
2648 error = parse_queue_rate(hdr, &queue->max_rate);
2652 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2659 ofpbuf_pull(reply, prop_len);
2665 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2666 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2667 * successful, otherwise an OpenFlow error code. */
2669 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2670 const struct ofp_header *oh)
2675 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2676 raw = ofpraw_pull_assert(&b);
2677 switch ((int) raw) {
2678 case OFPRAW_OFPST10_FLOW_REQUEST:
2679 return ofputil_decode_ofpst10_flow_request(fsr, ofpbuf_data(&b), false);
2681 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2682 return ofputil_decode_ofpst10_flow_request(fsr, ofpbuf_data(&b), true);
2684 case OFPRAW_OFPST11_FLOW_REQUEST:
2685 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2687 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2688 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2690 case OFPRAW_NXST_FLOW_REQUEST:
2691 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2693 case OFPRAW_NXST_AGGREGATE_REQUEST:
2694 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2697 /* Hey, the caller lied. */
2702 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2703 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2704 * 'protocol', and returns the message. */
2706 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2707 enum ofputil_protocol protocol)
2713 case OFPUTIL_P_OF11_STD:
2714 case OFPUTIL_P_OF12_OXM:
2715 case OFPUTIL_P_OF13_OXM:
2716 case OFPUTIL_P_OF14_OXM:
2717 case OFPUTIL_P_OF15_OXM: {
2718 struct ofp11_flow_stats_request *ofsr;
2720 raw = (fsr->aggregate
2721 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2722 : OFPRAW_OFPST11_FLOW_REQUEST);
2723 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2724 ofputil_match_typical_len(protocol));
2725 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2726 ofsr->table_id = fsr->table_id;
2727 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2728 ofsr->out_group = htonl(fsr->out_group);
2729 ofsr->cookie = fsr->cookie;
2730 ofsr->cookie_mask = fsr->cookie_mask;
2731 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2735 case OFPUTIL_P_OF10_STD:
2736 case OFPUTIL_P_OF10_STD_TID: {
2737 struct ofp10_flow_stats_request *ofsr;
2739 raw = (fsr->aggregate
2740 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2741 : OFPRAW_OFPST10_FLOW_REQUEST);
2742 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2743 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2744 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2745 ofsr->table_id = fsr->table_id;
2746 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2750 case OFPUTIL_P_OF10_NXM:
2751 case OFPUTIL_P_OF10_NXM_TID: {
2752 struct nx_flow_stats_request *nfsr;
2755 raw = (fsr->aggregate
2756 ? OFPRAW_NXST_AGGREGATE_REQUEST
2757 : OFPRAW_NXST_FLOW_REQUEST);
2758 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2759 ofpbuf_put_zeros(msg, sizeof *nfsr);
2760 match_len = nx_put_match(msg, &fsr->match,
2761 fsr->cookie, fsr->cookie_mask);
2763 nfsr = ofpbuf_l3(msg);
2764 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2765 nfsr->match_len = htons(match_len);
2766 nfsr->table_id = fsr->table_id;
2777 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2778 * ofputil_flow_stats in 'fs'.
2780 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2781 * OpenFlow message. Calling this function multiple times for a single 'msg'
2782 * iterates through the replies. The caller must initially leave 'msg''s layer
2783 * pointers null and not modify them between calls.
2785 * Most switches don't send the values needed to populate fs->idle_age and
2786 * fs->hard_age, so those members will usually be set to 0. If the switch from
2787 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2788 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2789 * 'idle_age' and 'hard_age' members in 'fs'.
2791 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2792 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2793 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2795 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2796 * otherwise a positive errno value. */
2798 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2800 bool flow_age_extension,
2801 struct ofpbuf *ofpacts)
2803 const struct ofp_header *oh;
2808 ? ofpraw_decode(&raw, msg->frame)
2809 : ofpraw_pull(&raw, msg));
2815 if (!ofpbuf_size(msg)) {
2817 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2818 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2819 const struct ofp11_flow_stats *ofs;
2821 uint16_t padded_match_len;
2823 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2825 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2826 "bytes at end", ofpbuf_size(msg));
2830 length = ntohs(ofs->length);
2831 if (length < sizeof *ofs) {
2832 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2833 "length %"PRIuSIZE, length);
2837 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2838 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2842 if (ofpacts_pull_openflow_instructions(msg, length - sizeof *ofs -
2843 padded_match_len, oh->version,
2845 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2849 fs->priority = ntohs(ofs->priority);
2850 fs->table_id = ofs->table_id;
2851 fs->duration_sec = ntohl(ofs->duration_sec);
2852 fs->duration_nsec = ntohl(ofs->duration_nsec);
2853 fs->idle_timeout = ntohs(ofs->idle_timeout);
2854 fs->hard_timeout = ntohs(ofs->hard_timeout);
2855 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2856 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2866 fs->cookie = ofs->cookie;
2867 fs->packet_count = ntohll(ofs->packet_count);
2868 fs->byte_count = ntohll(ofs->byte_count);
2869 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2870 const struct ofp10_flow_stats *ofs;
2873 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2875 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2876 "bytes at end", ofpbuf_size(msg));
2880 length = ntohs(ofs->length);
2881 if (length < sizeof *ofs) {
2882 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2883 "length %"PRIuSIZE, length);
2887 if (ofpacts_pull_openflow_actions(msg, length - sizeof *ofs,
2888 oh->version, ofpacts)) {
2892 fs->cookie = get_32aligned_be64(&ofs->cookie);
2893 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2894 fs->priority = ntohs(ofs->priority);
2895 fs->table_id = ofs->table_id;
2896 fs->duration_sec = ntohl(ofs->duration_sec);
2897 fs->duration_nsec = ntohl(ofs->duration_nsec);
2898 fs->idle_timeout = ntohs(ofs->idle_timeout);
2899 fs->hard_timeout = ntohs(ofs->hard_timeout);
2902 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2903 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2905 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2906 const struct nx_flow_stats *nfs;
2907 size_t match_len, actions_len, length;
2909 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2911 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2912 "bytes at end", ofpbuf_size(msg));
2916 length = ntohs(nfs->length);
2917 match_len = ntohs(nfs->match_len);
2918 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2919 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2920 "claims invalid length %"PRIuSIZE, match_len, length);
2923 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2927 actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2928 if (ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
2933 fs->cookie = nfs->cookie;
2934 fs->table_id = nfs->table_id;
2935 fs->duration_sec = ntohl(nfs->duration_sec);
2936 fs->duration_nsec = ntohl(nfs->duration_nsec);
2937 fs->priority = ntohs(nfs->priority);
2938 fs->idle_timeout = ntohs(nfs->idle_timeout);
2939 fs->hard_timeout = ntohs(nfs->hard_timeout);
2942 if (flow_age_extension) {
2943 if (nfs->idle_age) {
2944 fs->idle_age = ntohs(nfs->idle_age) - 1;
2946 if (nfs->hard_age) {
2947 fs->hard_age = ntohs(nfs->hard_age) - 1;
2950 fs->packet_count = ntohll(nfs->packet_count);
2951 fs->byte_count = ntohll(nfs->byte_count);
2957 fs->ofpacts = ofpbuf_data(ofpacts);
2958 fs->ofpacts_len = ofpbuf_size(ofpacts);
2963 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2965 * We use this in situations where OVS internally uses UINT64_MAX to mean
2966 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2968 unknown_to_zero(uint64_t count)
2970 return count != UINT64_MAX ? count : 0;
2973 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2974 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2975 * have been initialized with ofpmp_init(). */
2977 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2978 struct list *replies)
2980 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2981 size_t start_ofs = ofpbuf_size(reply);
2982 enum ofp_version version = ofpmp_version(replies);
2983 enum ofpraw raw = ofpmp_decode_raw(replies);
2985 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2986 struct ofp11_flow_stats *ofs;
2988 ofpbuf_put_uninit(reply, sizeof *ofs);
2989 oxm_put_match(reply, &fs->match, version);
2990 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
2993 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2994 ofs->length = htons(ofpbuf_size(reply) - start_ofs);
2995 ofs->table_id = fs->table_id;
2997 ofs->duration_sec = htonl(fs->duration_sec);
2998 ofs->duration_nsec = htonl(fs->duration_nsec);
2999 ofs->priority = htons(fs->priority);
3000 ofs->idle_timeout = htons(fs->idle_timeout);
3001 ofs->hard_timeout = htons(fs->hard_timeout);
3002 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3003 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3007 memset(ofs->pad2, 0, sizeof ofs->pad2);
3008 ofs->cookie = fs->cookie;
3009 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3010 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3011 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3012 struct ofp10_flow_stats *ofs;
3014 ofpbuf_put_uninit(reply, sizeof *ofs);
3015 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3017 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3018 ofs->length = htons(ofpbuf_size(reply) - start_ofs);
3019 ofs->table_id = fs->table_id;
3021 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3022 ofs->duration_sec = htonl(fs->duration_sec);
3023 ofs->duration_nsec = htonl(fs->duration_nsec);
3024 ofs->priority = htons(fs->priority);
3025 ofs->idle_timeout = htons(fs->idle_timeout);
3026 ofs->hard_timeout = htons(fs->hard_timeout);
3027 memset(ofs->pad2, 0, sizeof ofs->pad2);
3028 put_32aligned_be64(&ofs->cookie, fs->cookie);
3029 put_32aligned_be64(&ofs->packet_count,
3030 htonll(unknown_to_zero(fs->packet_count)));
3031 put_32aligned_be64(&ofs->byte_count,
3032 htonll(unknown_to_zero(fs->byte_count)));
3033 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3034 struct nx_flow_stats *nfs;
3037 ofpbuf_put_uninit(reply, sizeof *nfs);
3038 match_len = nx_put_match(reply, &fs->match, 0, 0);
3039 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3041 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3042 nfs->length = htons(ofpbuf_size(reply) - start_ofs);
3043 nfs->table_id = fs->table_id;
3045 nfs->duration_sec = htonl(fs->duration_sec);
3046 nfs->duration_nsec = htonl(fs->duration_nsec);
3047 nfs->priority = htons(fs->priority);
3048 nfs->idle_timeout = htons(fs->idle_timeout);
3049 nfs->hard_timeout = htons(fs->hard_timeout);
3050 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3051 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3053 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3054 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3056 nfs->match_len = htons(match_len);
3057 nfs->cookie = fs->cookie;
3058 nfs->packet_count = htonll(fs->packet_count);
3059 nfs->byte_count = htonll(fs->byte_count);
3064 ofpmp_postappend(replies, start_ofs);
3067 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3068 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3070 ofputil_encode_aggregate_stats_reply(
3071 const struct ofputil_aggregate_stats *stats,
3072 const struct ofp_header *request)
3074 struct ofp_aggregate_stats_reply *asr;
3075 uint64_t packet_count;
3076 uint64_t byte_count;
3080 ofpraw_decode(&raw, request);
3081 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3082 packet_count = unknown_to_zero(stats->packet_count);
3083 byte_count = unknown_to_zero(stats->byte_count);
3085 packet_count = stats->packet_count;
3086 byte_count = stats->byte_count;
3089 msg = ofpraw_alloc_stats_reply(request, 0);
3090 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3091 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3092 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3093 asr->flow_count = htonl(stats->flow_count);
3099 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3100 const struct ofp_header *reply)
3102 struct ofp_aggregate_stats_reply *asr;
3105 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3106 ofpraw_pull_assert(&msg);
3108 asr = ofpbuf_l3(&msg);
3109 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3110 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3111 stats->flow_count = ntohl(asr->flow_count);
3116 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3117 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3118 * an OpenFlow error code. */
3120 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3121 const struct ofp_header *oh)
3126 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3127 raw = ofpraw_pull_assert(&b);
3128 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3129 const struct ofp12_flow_removed *ofr;
3132 ofr = ofpbuf_pull(&b, sizeof *ofr);
3134 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3139 fr->priority = ntohs(ofr->priority);
3140 fr->cookie = ofr->cookie;
3141 fr->reason = ofr->reason;
3142 fr->table_id = ofr->table_id;
3143 fr->duration_sec = ntohl(ofr->duration_sec);
3144 fr->duration_nsec = ntohl(ofr->duration_nsec);
3145 fr->idle_timeout = ntohs(ofr->idle_timeout);
3146 fr->hard_timeout = ntohs(ofr->hard_timeout);
3147 fr->packet_count = ntohll(ofr->packet_count);
3148 fr->byte_count = ntohll(ofr->byte_count);
3149 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3150 const struct ofp10_flow_removed *ofr;
3152 ofr = ofpbuf_pull(&b, sizeof *ofr);
3154 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3155 fr->priority = ntohs(ofr->priority);
3156 fr->cookie = ofr->cookie;
3157 fr->reason = ofr->reason;
3159 fr->duration_sec = ntohl(ofr->duration_sec);
3160 fr->duration_nsec = ntohl(ofr->duration_nsec);
3161 fr->idle_timeout = ntohs(ofr->idle_timeout);
3162 fr->hard_timeout = 0;
3163 fr->packet_count = ntohll(ofr->packet_count);
3164 fr->byte_count = ntohll(ofr->byte_count);
3165 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3166 struct nx_flow_removed *nfr;
3169 nfr = ofpbuf_pull(&b, sizeof *nfr);
3170 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3175 if (ofpbuf_size(&b)) {
3176 return OFPERR_OFPBRC_BAD_LEN;
3179 fr->priority = ntohs(nfr->priority);
3180 fr->cookie = nfr->cookie;
3181 fr->reason = nfr->reason;
3182 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3183 fr->duration_sec = ntohl(nfr->duration_sec);
3184 fr->duration_nsec = ntohl(nfr->duration_nsec);
3185 fr->idle_timeout = ntohs(nfr->idle_timeout);
3186 fr->hard_timeout = 0;
3187 fr->packet_count = ntohll(nfr->packet_count);
3188 fr->byte_count = ntohll(nfr->byte_count);
3196 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3197 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3200 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3201 enum ofputil_protocol protocol)
3204 enum ofp_flow_removed_reason reason = fr->reason;
3206 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3207 reason = OFPRR_DELETE;
3211 case OFPUTIL_P_OF11_STD:
3212 case OFPUTIL_P_OF12_OXM:
3213 case OFPUTIL_P_OF13_OXM:
3214 case OFPUTIL_P_OF14_OXM:
3215 case OFPUTIL_P_OF15_OXM: {
3216 struct ofp12_flow_removed *ofr;
3218 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3219 ofputil_protocol_to_ofp_version(protocol),
3221 ofputil_match_typical_len(protocol));
3222 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3223 ofr->cookie = fr->cookie;
3224 ofr->priority = htons(fr->priority);
3225 ofr->reason = reason;
3226 ofr->table_id = fr->table_id;
3227 ofr->duration_sec = htonl(fr->duration_sec);
3228 ofr->duration_nsec = htonl(fr->duration_nsec);
3229 ofr->idle_timeout = htons(fr->idle_timeout);
3230 ofr->hard_timeout = htons(fr->hard_timeout);
3231 ofr->packet_count = htonll(fr->packet_count);
3232 ofr->byte_count = htonll(fr->byte_count);
3233 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3237 case OFPUTIL_P_OF10_STD:
3238 case OFPUTIL_P_OF10_STD_TID: {
3239 struct ofp10_flow_removed *ofr;
3241 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3243 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3244 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3245 ofr->cookie = fr->cookie;
3246 ofr->priority = htons(fr->priority);
3247 ofr->reason = reason;
3248 ofr->duration_sec = htonl(fr->duration_sec);
3249 ofr->duration_nsec = htonl(fr->duration_nsec);
3250 ofr->idle_timeout = htons(fr->idle_timeout);
3251 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3252 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3256 case OFPUTIL_P_OF10_NXM:
3257 case OFPUTIL_P_OF10_NXM_TID: {
3258 struct nx_flow_removed *nfr;
3261 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3262 htonl(0), NXM_TYPICAL_LEN);
3263 ofpbuf_put_zeros(msg, sizeof *nfr);
3264 match_len = nx_put_match(msg, &fr->match, 0, 0);
3266 nfr = ofpbuf_l3(msg);
3267 nfr->cookie = fr->cookie;
3268 nfr->priority = htons(fr->priority);
3269 nfr->reason = reason;
3270 nfr->table_id = fr->table_id + 1;
3271 nfr->duration_sec = htonl(fr->duration_sec);
3272 nfr->duration_nsec = htonl(fr->duration_nsec);
3273 nfr->idle_timeout = htons(fr->idle_timeout);
3274 nfr->match_len = htons(match_len);
3275 nfr->packet_count = htonll(fr->packet_count);
3276 nfr->byte_count = htonll(fr->byte_count);
3288 ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin,
3289 struct match *match, struct ofpbuf *b)
3291 pin->packet = ofpbuf_data(b);
3292 pin->packet_len = ofpbuf_size(b);
3294 pin->fmd.in_port = match->flow.in_port.ofp_port;
3295 pin->fmd.tun_id = match->flow.tunnel.tun_id;
3296 pin->fmd.tun_src = match->flow.tunnel.ip_src;
3297 pin->fmd.tun_dst = match->flow.tunnel.ip_dst;
3298 pin->fmd.metadata = match->flow.metadata;
3299 memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs);
3300 pin->fmd.pkt_mark = match->flow.pkt_mark;
3304 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3305 const struct ofp_header *oh)
3310 memset(pin, 0, sizeof *pin);
3311 pin->cookie = OVS_BE64_MAX;
3313 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3314 raw = ofpraw_pull_assert(&b);
3315 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3316 const struct ofp13_packet_in *opi;
3319 size_t packet_in_size;
3321 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3322 packet_in_size = sizeof (struct ofp12_packet_in);
3324 packet_in_size = sizeof (struct ofp13_packet_in);
3327 opi = ofpbuf_pull(&b, packet_in_size);
3328 error = oxm_pull_match_loose(&b, &match);
3333 if (!ofpbuf_try_pull(&b, 2)) {
3334 return OFPERR_OFPBRC_BAD_LEN;
3337 pin->reason = opi->pi.reason;
3338 pin->table_id = opi->pi.table_id;
3339 pin->buffer_id = ntohl(opi->pi.buffer_id);
3340 pin->total_len = ntohs(opi->pi.total_len);
3342 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3343 pin->cookie = opi->cookie;
3346 ofputil_decode_packet_in_finish(pin, &match, &b);
3347 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3348 const struct ofp10_packet_in *opi;
3350 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3352 pin->packet = opi->data;
3353 pin->packet_len = ofpbuf_size(&b);
3355 pin->fmd.in_port = u16_to_ofp(ntohs(opi->in_port));
3356 pin->reason = opi->reason;
3357 pin->buffer_id = ntohl(opi->buffer_id);
3358 pin->total_len = ntohs(opi->total_len);
3359 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3360 const struct ofp11_packet_in *opi;
3363 opi = ofpbuf_pull(&b, sizeof *opi);
3365 pin->packet = ofpbuf_data(&b);
3366 pin->packet_len = ofpbuf_size(&b);
3368 pin->buffer_id = ntohl(opi->buffer_id);
3369 error = ofputil_port_from_ofp11(opi->in_port, &pin->fmd.in_port);
3373 pin->total_len = ntohs(opi->total_len);
3374 pin->reason = opi->reason;
3375 pin->table_id = opi->table_id;
3376 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3377 const struct nx_packet_in *npi;
3381 npi = ofpbuf_pull(&b, sizeof *npi);
3382 error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL,
3388 if (!ofpbuf_try_pull(&b, 2)) {
3389 return OFPERR_OFPBRC_BAD_LEN;
3392 pin->reason = npi->reason;
3393 pin->table_id = npi->table_id;
3394 pin->cookie = npi->cookie;
3396 pin->buffer_id = ntohl(npi->buffer_id);
3397 pin->total_len = ntohs(npi->total_len);
3399 ofputil_decode_packet_in_finish(pin, &match, &b);
3408 ofputil_packet_in_to_match(const struct ofputil_packet_in *pin,
3409 struct match *match)
3413 match_init_catchall(match);
3414 if (pin->fmd.tun_id != htonll(0)) {
3415 match_set_tun_id(match, pin->fmd.tun_id);
3417 if (pin->fmd.tun_src != htonl(0)) {
3418 match_set_tun_src(match, pin->fmd.tun_src);
3420 if (pin->fmd.tun_dst != htonl(0)) {
3421 match_set_tun_dst(match, pin->fmd.tun_dst);
3423 if (pin->fmd.metadata != htonll(0)) {
3424 match_set_metadata(match, pin->fmd.metadata);
3427 for (i = 0; i < FLOW_N_REGS; i++) {
3428 if (pin->fmd.regs[i]) {
3429 match_set_reg(match, i, pin->fmd.regs[i]);
3433 if (pin->fmd.pkt_mark != 0) {
3434 match_set_pkt_mark(match, pin->fmd.pkt_mark);
3437 match_set_in_port(match, pin->fmd.in_port);
3440 static struct ofpbuf *
3441 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3443 struct ofp10_packet_in *opi;
3444 struct ofpbuf *packet;
3446 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3447 htonl(0), pin->packet_len);
3448 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3449 opi->total_len = htons(pin->total_len);
3450 opi->in_port = htons(ofp_to_u16(pin->fmd.in_port));
3451 opi->reason = pin->reason;
3452 opi->buffer_id = htonl(pin->buffer_id);
3454 ofpbuf_put(packet, pin->packet, pin->packet_len);
3459 static struct ofpbuf *
3460 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3462 struct nx_packet_in *npi;
3463 struct ofpbuf *packet;
3467 ofputil_packet_in_to_match(pin, &match);
3469 /* The final argument is just an estimate of the space required. */
3470 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3471 htonl(0), (sizeof(struct flow_metadata) * 2
3472 + 2 + pin->packet_len));
3473 ofpbuf_put_zeros(packet, sizeof *npi);
3474 match_len = nx_put_match(packet, &match, 0, 0);
3475 ofpbuf_put_zeros(packet, 2);
3476 ofpbuf_put(packet, pin->packet, pin->packet_len);
3478 npi = ofpbuf_l3(packet);
3479 npi->buffer_id = htonl(pin->buffer_id);
3480 npi->total_len = htons(pin->total_len);
3481 npi->reason = pin->reason;
3482 npi->table_id = pin->table_id;
3483 npi->cookie = pin->cookie;
3484 npi->match_len = htons(match_len);
3489 static struct ofpbuf *
3490 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3492 struct ofp11_packet_in *opi;
3493 struct ofpbuf *packet;
3495 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3496 htonl(0), pin->packet_len);
3497 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3498 opi->buffer_id = htonl(pin->buffer_id);
3499 opi->in_port = ofputil_port_to_ofp11(pin->fmd.in_port);
3500 opi->in_phy_port = opi->in_port;
3501 opi->total_len = htons(pin->total_len);
3502 opi->reason = pin->reason;
3503 opi->table_id = pin->table_id;
3505 ofpbuf_put(packet, pin->packet, pin->packet_len);
3510 static struct ofpbuf *
3511 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3512 enum ofputil_protocol protocol)
3514 struct ofp13_packet_in *opi;
3516 enum ofpraw packet_in_raw;
3517 enum ofp_version packet_in_version;
3518 size_t packet_in_size;
3519 struct ofpbuf *packet;
3521 if (protocol == OFPUTIL_P_OF12_OXM) {
3522 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3523 packet_in_version = OFP12_VERSION;
3524 packet_in_size = sizeof (struct ofp12_packet_in);
3526 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3527 packet_in_version = OFP13_VERSION;
3528 packet_in_size = sizeof (struct ofp13_packet_in);
3531 ofputil_packet_in_to_match(pin, &match);
3533 /* The final argument is just an estimate of the space required. */
3534 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3535 htonl(0), (sizeof(struct flow_metadata) * 2
3536 + 2 + pin->packet_len));
3537 ofpbuf_put_zeros(packet, packet_in_size);
3538 oxm_put_match(packet, &match, ofputil_protocol_to_ofp_version(protocol));
3539 ofpbuf_put_zeros(packet, 2);
3540 ofpbuf_put(packet, pin->packet, pin->packet_len);
3542 opi = ofpbuf_l3(packet);
3543 opi->pi.buffer_id = htonl(pin->buffer_id);
3544 opi->pi.total_len = htons(pin->total_len);
3545 opi->pi.reason = pin->reason;
3546 opi->pi.table_id = pin->table_id;
3547 if (protocol == OFPUTIL_P_OF13_OXM) {
3548 opi->cookie = pin->cookie;
3554 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3555 * in the format specified by 'packet_in_format'. */
3557 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3558 enum ofputil_protocol protocol,
3559 enum nx_packet_in_format packet_in_format)
3561 struct ofpbuf *packet;
3564 case OFPUTIL_P_OF10_STD:
3565 case OFPUTIL_P_OF10_STD_TID:
3566 case OFPUTIL_P_OF10_NXM:
3567 case OFPUTIL_P_OF10_NXM_TID:
3568 packet = (packet_in_format == NXPIF_NXM
3569 ? ofputil_encode_nx_packet_in(pin)
3570 : ofputil_encode_ofp10_packet_in(pin));
3573 case OFPUTIL_P_OF11_STD:
3574 packet = ofputil_encode_ofp11_packet_in(pin);
3577 case OFPUTIL_P_OF12_OXM:
3578 case OFPUTIL_P_OF13_OXM:
3579 case OFPUTIL_P_OF14_OXM:
3580 case OFPUTIL_P_OF15_OXM:
3581 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3588 ofpmsg_update_length(packet);
3592 /* Returns a string form of 'reason'. The return value is either a statically
3593 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3594 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3596 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3597 char *reasonbuf, size_t bufsize)
3604 case OFPR_INVALID_TTL:
3605 return "invalid_ttl";
3607 case OFPR_N_REASONS:
3609 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3615 ofputil_packet_in_reason_from_string(const char *s,
3616 enum ofp_packet_in_reason *reason)
3620 for (i = 0; i < OFPR_N_REASONS; i++) {
3621 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3622 const char *reason_s;
3624 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3626 if (!strcasecmp(s, reason_s)) {
3634 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3637 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3638 * message's actions. The caller must initialize 'ofpacts' and retains
3639 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3641 * Returns 0 if successful, otherwise an OFPERR_* value. */
3643 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3644 const struct ofp_header *oh,
3645 struct ofpbuf *ofpacts)
3650 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3651 raw = ofpraw_pull_assert(&b);
3653 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3655 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3657 po->buffer_id = ntohl(opo->buffer_id);
3658 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3663 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3664 oh->version, ofpacts);
3668 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3670 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3672 po->buffer_id = ntohl(opo->buffer_id);
3673 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3675 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3676 oh->version, ofpacts);
3684 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3685 && po->in_port != OFPP_LOCAL
3686 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3687 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3689 return OFPERR_OFPBRC_BAD_PORT;
3692 po->ofpacts = ofpbuf_data(ofpacts);
3693 po->ofpacts_len = ofpbuf_size(ofpacts);
3695 if (po->buffer_id == UINT32_MAX) {
3696 po->packet = ofpbuf_data(&b);
3697 po->packet_len = ofpbuf_size(&b);
3706 /* ofputil_phy_port */
3708 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3709 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3710 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3711 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3712 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3713 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3714 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3715 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3717 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3718 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3719 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3720 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3721 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3722 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3724 static enum netdev_features
3725 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3727 uint32_t ofp10 = ntohl(ofp10_);
3728 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3732 netdev_port_features_to_ofp10(enum netdev_features features)
3734 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3737 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3738 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3739 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3740 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3741 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3742 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3743 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3744 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3745 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3746 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3747 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3748 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3749 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3750 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3751 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3752 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3754 static enum netdev_features
3755 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3757 return ntohl(ofp11) & 0xffff;
3761 netdev_port_features_to_ofp11(enum netdev_features features)
3763 return htonl(features & 0xffff);
3767 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3768 const struct ofp10_phy_port *opp)
3770 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3771 memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN);
3772 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3774 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3775 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3777 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3778 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3779 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3780 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3782 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3783 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3789 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3790 const struct ofp11_port *op)
3794 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3798 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3799 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3801 pp->config = ntohl(op->config) & OFPPC11_ALL;
3802 pp->state = ntohl(op->state) & OFPPS11_ALL;
3804 pp->curr = netdev_port_features_from_ofp11(op->curr);
3805 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3806 pp->supported = netdev_port_features_from_ofp11(op->supported);
3807 pp->peer = netdev_port_features_from_ofp11(op->peer);
3809 pp->curr_speed = ntohl(op->curr_speed);
3810 pp->max_speed = ntohl(op->max_speed);
3816 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3817 struct ofputil_phy_port *pp)
3819 struct ofp14_port_desc_prop_ethernet *eth = ofpbuf_data(payload);
3821 if (ofpbuf_size(payload) != sizeof *eth) {
3822 return OFPERR_OFPBPC_BAD_LEN;
3825 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3826 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3827 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3828 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3830 pp->curr_speed = ntohl(eth->curr_speed);
3831 pp->max_speed = ntohl(eth->max_speed);
3837 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3839 struct ofpbuf properties;
3840 struct ofp14_port *op;
3844 op = ofpbuf_try_pull(msg, sizeof *op);
3846 return OFPERR_OFPBRC_BAD_LEN;
3849 len = ntohs(op->length);
3850 if (len < sizeof *op || len - sizeof *op > ofpbuf_size(msg)) {
3851 return OFPERR_OFPBRC_BAD_LEN;
3854 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3856 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3860 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3861 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3863 pp->config = ntohl(op->config) & OFPPC11_ALL;
3864 pp->state = ntohl(op->state) & OFPPS11_ALL;
3866 while (ofpbuf_size(&properties) > 0) {
3867 struct ofpbuf payload;
3871 error = ofputil_pull_property(&properties, &payload, &type);
3877 case OFPPDPT14_ETHERNET:
3878 error = parse_ofp14_port_ethernet_property(&payload, pp);
3882 log_property(true, "unknown port property %"PRIu16, type);
3896 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3897 struct ofp10_phy_port *opp)
3899 memset(opp, 0, sizeof *opp);
3901 opp->port_no = htons(ofp_to_u16(pp->port_no));
3902 memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3903 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3905 opp->config = htonl(pp->config & OFPPC10_ALL);
3906 opp->state = htonl(pp->state & OFPPS10_ALL);
3908 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3909 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3910 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3911 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3915 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3916 struct ofp11_port *op)
3918 memset(op, 0, sizeof *op);
3920 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3921 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3922 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3924 op->config = htonl(pp->config & OFPPC11_ALL);
3925 op->state = htonl(pp->state & OFPPS11_ALL);
3927 op->curr = netdev_port_features_to_ofp11(pp->curr);
3928 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3929 op->supported = netdev_port_features_to_ofp11(pp->supported);
3930 op->peer = netdev_port_features_to_ofp11(pp->peer);
3932 op->curr_speed = htonl(pp->curr_speed);
3933 op->max_speed = htonl(pp->max_speed);
3937 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3940 struct ofp14_port *op;
3941 struct ofp14_port_desc_prop_ethernet *eth;
3943 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3945 op = ofpbuf_put_zeros(b, sizeof *op);
3946 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3947 op->length = htons(sizeof *op + sizeof *eth);
3948 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3949 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3950 op->config = htonl(pp->config & OFPPC11_ALL);
3951 op->state = htonl(pp->state & OFPPS11_ALL);
3953 eth = ofpbuf_put_zeros(b, sizeof *eth);
3954 eth->type = htons(OFPPDPT14_ETHERNET);
3955 eth->length = htons(sizeof *eth);
3956 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3957 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3958 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3959 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3960 eth->curr_speed = htonl(pp->curr_speed);
3961 eth->max_speed = htonl(pp->max_speed);
3965 ofputil_put_phy_port(enum ofp_version ofp_version,
3966 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3968 switch (ofp_version) {
3969 case OFP10_VERSION: {
3970 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3971 ofputil_encode_ofp10_phy_port(pp, opp);
3977 case OFP13_VERSION: {
3978 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3979 ofputil_encode_ofp11_port(pp, op);
3985 ofputil_put_ofp14_port(pp, b);
3994 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
4000 ofpbuf_use_const(&b, request, ntohs(request->length));
4001 raw = ofpraw_pull_assert(&b);
4002 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4005 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4006 ovs_be32 *ofp11_port;
4008 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4009 return ofputil_port_from_ofp11(*ofp11_port, port);
4016 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4019 struct ofpbuf *request;
4020 ovs_be32 ofp11_port;
4022 switch (ofp_version) {
4028 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4033 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4035 ofp11_port = ofputil_port_to_ofp11(port);
4036 ofpbuf_put(request, &ofp11_port, sizeof ofp11_port);
4047 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4048 struct list *replies)
4050 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4051 size_t start_ofs = ofpbuf_size(reply);
4053 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4054 ofpmp_postappend(replies, start_ofs);
4057 /* ofputil_switch_features */
4059 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4060 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4061 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4062 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4063 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4064 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4065 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4066 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4069 ofputil_capabilities_mask(enum ofp_version ofp_version)
4071 /* Handle capabilities whose bit is unique for all Open Flow versions */
4072 switch (ofp_version) {
4075 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4080 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4082 /* Caller needs to check osf->header.version itself */
4087 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4088 * abstract representation in '*features'. Initializes '*b' to iterate over
4089 * the OpenFlow port structures following 'osf' with later calls to
4090 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4091 * OFPERR_* value. */
4093 ofputil_decode_switch_features(const struct ofp_header *oh,
4094 struct ofputil_switch_features *features,
4097 const struct ofp_switch_features *osf;
4100 ofpbuf_use_const(b, oh, ntohs(oh->length));
4101 raw = ofpraw_pull_assert(b);
4103 osf = ofpbuf_pull(b, sizeof *osf);
4104 features->datapath_id = ntohll(osf->datapath_id);
4105 features->n_buffers = ntohl(osf->n_buffers);
4106 features->n_tables = osf->n_tables;
4107 features->auxiliary_id = 0;
4109 features->capabilities = ntohl(osf->capabilities) &
4110 ofputil_capabilities_mask(oh->version);
4112 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4113 if (osf->capabilities & htonl(OFPC10_STP)) {
4114 features->capabilities |= OFPUTIL_C_STP;
4116 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4118 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4119 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4120 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4121 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4123 features->ofpacts = 0;
4124 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4125 features->auxiliary_id = osf->auxiliary_id;
4128 return OFPERR_OFPBRC_BAD_VERSION;
4134 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4135 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4136 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4138 * Given a buffer 'b' that contains a Features Reply message, this message
4139 * checks if it contains a complete list of the switch's ports. Returns true,
4140 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4141 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4144 * When this function returns false, the caller should send an OFPST_PORT_DESC
4145 * stats request to get the ports. */
4147 ofputil_switch_features_has_ports(struct ofpbuf *b)
4149 struct ofp_header *oh = ofpbuf_data(b);
4150 size_t phy_port_size;
4152 if (oh->version >= OFP13_VERSION) {
4153 /* OpenFlow 1.3+ never has ports in the feature reply. */
4157 phy_port_size = (oh->version == OFP10_VERSION
4158 ? sizeof(struct ofp10_phy_port)
4159 : sizeof(struct ofp11_port));
4160 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4161 /* There's room for additional ports in the feature reply.
4162 * Assume that the list is complete. */
4166 /* The feature reply has no room for more ports. Probably the list is
4167 * truncated. Drop the ports and tell the caller to retrieve them with
4168 * OFPST_PORT_DESC. */
4169 ofpbuf_set_size(b, sizeof *oh + sizeof(struct ofp_switch_features));
4170 ofpmsg_update_length(b);
4174 /* Returns a buffer owned by the caller that encodes 'features' in the format
4175 * required by 'protocol' with the given 'xid'. The caller should append port
4176 * information to the buffer with subsequent calls to
4177 * ofputil_put_switch_features_port(). */
4179 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4180 enum ofputil_protocol protocol, ovs_be32 xid)
4182 struct ofp_switch_features *osf;
4184 enum ofp_version version;
4187 version = ofputil_protocol_to_ofp_version(protocol);
4190 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4194 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4199 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4204 b = ofpraw_alloc_xid(raw, version, xid, 0);
4205 osf = ofpbuf_put_zeros(b, sizeof *osf);
4206 osf->datapath_id = htonll(features->datapath_id);
4207 osf->n_buffers = htonl(features->n_buffers);
4208 osf->n_tables = features->n_tables;
4210 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4211 osf->capabilities = htonl(features->capabilities &
4212 ofputil_capabilities_mask(version));
4215 if (features->capabilities & OFPUTIL_C_STP) {
4216 osf->capabilities |= htonl(OFPC10_STP);
4218 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4224 osf->auxiliary_id = features->auxiliary_id;
4228 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4229 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4239 /* Encodes 'pp' into the format required by the switch_features message already
4240 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4241 * and appends the encoded version to 'b'. */
4243 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4246 const struct ofp_header *oh = ofpbuf_data(b);
4248 if (oh->version < OFP13_VERSION) {
4249 /* Try adding a port description to the message, but drop it again if
4250 * the buffer overflows. (This possibility for overflow is why
4251 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4252 size_t start_ofs = ofpbuf_size(b);
4253 ofputil_put_phy_port(oh->version, pp, b);
4254 if (ofpbuf_size(b) > UINT16_MAX) {
4255 ofpbuf_set_size(b, start_ofs);
4260 /* ofputil_port_status */
4262 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4263 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4265 ofputil_decode_port_status(const struct ofp_header *oh,
4266 struct ofputil_port_status *ps)
4268 const struct ofp_port_status *ops;
4272 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4273 ofpraw_pull_assert(&b);
4274 ops = ofpbuf_pull(&b, sizeof *ops);
4276 if (ops->reason != OFPPR_ADD &&
4277 ops->reason != OFPPR_DELETE &&
4278 ops->reason != OFPPR_MODIFY) {
4279 return OFPERR_NXBRC_BAD_REASON;
4281 ps->reason = ops->reason;
4283 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4284 ovs_assert(retval != EOF);
4288 /* Converts the abstract form of a "port status" message in '*ps' into an
4289 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4290 * a buffer owned by the caller. */
4292 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4293 enum ofputil_protocol protocol)
4295 struct ofp_port_status *ops;
4297 enum ofp_version version;
4300 version = ofputil_protocol_to_ofp_version(protocol);
4303 raw = OFPRAW_OFPT10_PORT_STATUS;
4309 raw = OFPRAW_OFPT11_PORT_STATUS;
4314 raw = OFPRAW_OFPT14_PORT_STATUS;
4321 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4322 ops = ofpbuf_put_zeros(b, sizeof *ops);
4323 ops->reason = ps->reason;
4324 ofputil_put_phy_port(version, &ps->desc, b);
4325 ofpmsg_update_length(b);
4329 /* ofputil_port_mod */
4332 parse_port_mod_ethernet_property(struct ofpbuf *property,
4333 struct ofputil_port_mod *pm)
4335 struct ofp14_port_mod_prop_ethernet *eth = ofpbuf_data(property);
4337 if (ofpbuf_size(property) != sizeof *eth) {
4338 return OFPERR_OFPBRC_BAD_LEN;
4341 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4345 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4346 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4348 ofputil_decode_port_mod(const struct ofp_header *oh,
4349 struct ofputil_port_mod *pm, bool loose)
4354 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4355 raw = ofpraw_pull_assert(&b);
4357 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4358 const struct ofp10_port_mod *opm = ofpbuf_data(&b);
4360 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4361 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4362 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4363 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4364 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4365 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4366 const struct ofp11_port_mod *opm = ofpbuf_data(&b);
4369 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4374 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4375 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4376 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4377 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4378 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4379 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4382 memset(pm, 0, sizeof *pm);
4384 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4389 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4390 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4391 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4393 while (ofpbuf_size(&b) > 0) {
4394 struct ofpbuf property;
4398 error = ofputil_pull_property(&b, &property, &type);
4404 case OFPPMPT14_ETHERNET:
4405 error = parse_port_mod_ethernet_property(&property, pm);
4409 log_property(loose, "unknown port_mod property %"PRIu16, type);
4412 } else if (type == OFPPMPT14_EXPERIMENTER) {
4413 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4415 error = OFPERR_OFPBRC_BAD_TYPE;
4425 return OFPERR_OFPBRC_BAD_TYPE;
4428 pm->config &= pm->mask;
4432 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4433 * message suitable for 'protocol', and returns that encoded form in a buffer
4434 * owned by the caller. */
4436 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4437 enum ofputil_protocol protocol)
4439 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4442 switch (ofp_version) {
4443 case OFP10_VERSION: {
4444 struct ofp10_port_mod *opm;
4446 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4447 opm = ofpbuf_put_zeros(b, sizeof *opm);
4448 opm->port_no = htons(ofp_to_u16(pm->port_no));
4449 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4450 opm->config = htonl(pm->config & OFPPC10_ALL);
4451 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4452 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4458 case OFP13_VERSION: {
4459 struct ofp11_port_mod *opm;
4461 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4462 opm = ofpbuf_put_zeros(b, sizeof *opm);
4463 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4464 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4465 opm->config = htonl(pm->config & OFPPC11_ALL);
4466 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4467 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4471 case OFP15_VERSION: {
4472 struct ofp14_port_mod_prop_ethernet *eth;
4473 struct ofp14_port_mod *opm;
4475 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4476 opm = ofpbuf_put_zeros(b, sizeof *opm);
4477 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4478 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4479 opm->config = htonl(pm->config & OFPPC11_ALL);
4480 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4482 if (pm->advertise) {
4483 eth = ofpbuf_put_zeros(b, sizeof *eth);
4484 eth->type = htons(OFPPMPT14_ETHERNET);
4485 eth->length = htons(sizeof *eth);
4486 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4497 /* Table features. */
4500 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4505 error = ofputil_pull_property(msg, payload, typep);
4506 if (payload && !error) {
4507 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4513 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4518 while (ofpbuf_size(payload) > 0) {
4522 error = ofputil_pull_property__(payload, NULL, 1, &type);
4526 if (type < CHAR_BIT * sizeof types) {
4527 types |= 1u << type;
4531 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4536 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4539 while (ofpbuf_size(payload) > 0) {
4540 enum ovs_instruction_type inst;
4544 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4545 * It seems clear that they aren't padded to 8 bytes, though, because
4546 * both standards say that "non-experimenter instructions are 4 bytes"
4547 * and do not mention any padding before the first instruction ID.
4548 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4549 * aligned on an odd 4-byte boundary.)
4551 * Anyway, we just assume they're all glommed together on byte
4553 error = ofputil_pull_property__(payload, NULL, 1, &ofpit);
4558 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4560 *insts |= 1u << inst;
4561 } else if (!loose) {
4569 parse_table_features_next_table(struct ofpbuf *payload,
4570 unsigned long int *next_tables)
4574 memset(next_tables, 0, bitmap_n_bytes(255));
4575 for (i = 0; i < ofpbuf_size(payload); i++) {
4576 uint8_t id = ((const uint8_t *) ofpbuf_data(payload))[i];
4578 return OFPERR_OFPBPC_BAD_VALUE;
4580 bitmap_set1(next_tables, id);
4586 parse_oxm(struct ofpbuf *b, bool loose,
4587 const struct mf_field **fieldp, bool *hasmask)
4592 oxmp = ofpbuf_try_pull(b, sizeof *oxmp);
4594 return OFPERR_OFPBPC_BAD_LEN;
4598 /* Determine '*hasmask'. If 'oxm' is masked, convert it to the equivalent
4599 * unmasked version, because the table of OXM fields we support only has
4600 * masked versions of fields that we support with masks, but we should be
4601 * able to parse the masked versions of those here. */
4602 *hasmask = NXM_HASMASK(oxm);
4604 if (NXM_LENGTH(oxm) & 1) {
4605 return OFPERR_OFPBPC_BAD_VALUE;
4607 oxm = NXM_HEADER(NXM_VENDOR(oxm), NXM_FIELD(oxm), NXM_LENGTH(oxm) / 2);
4610 *fieldp = mf_from_nxm_header(oxm);
4612 log_property(loose, "unknown OXM field %#"PRIx32, ntohl(*oxmp));
4614 return *fieldp ? 0 : OFPERR_OFPBMC_BAD_FIELD;
4618 parse_oxms(struct ofpbuf *payload, bool loose,
4619 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4621 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4622 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4624 while (ofpbuf_size(payload) > 0) {
4625 const struct mf_field *field;
4629 error = parse_oxm(payload, loose, &field, &hasmask);
4631 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4632 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4638 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4639 return OFPERR_OFPBMC_BAD_MASK;
4643 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4644 return OFPERR_OFPBMC_BAD_MASK;
4649 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4650 * ofputil_table_features in 'tf'.
4652 * If 'loose' is true, this function ignores properties and values that it does
4653 * not understand, as a controller would want to do when interpreting
4654 * capabilities provided by a switch. If 'loose' is false, this function
4655 * treats unknown properties and values as an error, as a switch would want to
4656 * do when interpreting a configuration request made by a controller.
4658 * A single OpenFlow message can specify features for multiple tables. Calling
4659 * this function multiple times for a single 'msg' iterates through the tables
4660 * in the message. The caller must initially leave 'msg''s layer pointers null
4661 * and not modify them between calls.
4663 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4664 * a positive "enum ofperr" value. */
4666 ofputil_decode_table_features(struct ofpbuf *msg,
4667 struct ofputil_table_features *tf, bool loose)
4669 const struct ofp_header *oh;
4670 struct ofp13_table_features *otf;
4671 struct ofpbuf properties;
4674 memset(tf, 0, sizeof *tf);
4677 ofpraw_pull_assert(msg);
4679 oh = ofpbuf_l2(msg);
4681 if (!ofpbuf_size(msg)) {
4685 if (ofpbuf_size(msg) < sizeof *otf) {
4686 return OFPERR_OFPBPC_BAD_LEN;
4689 otf = ofpbuf_data(msg);
4690 len = ntohs(otf->length);
4691 if (len < sizeof *otf || len % 8 || len > ofpbuf_size(msg)) {
4692 return OFPERR_OFPBPC_BAD_LEN;
4694 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4695 ofpbuf_pull(&properties, sizeof *otf);
4697 tf->table_id = otf->table_id;
4698 if (tf->table_id == OFPTT_ALL) {
4699 return OFPERR_OFPTFFC_BAD_TABLE;
4702 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4703 tf->metadata_match = otf->metadata_match;
4704 tf->metadata_write = otf->metadata_write;
4705 tf->miss_config = ofputil_table_miss_from_config(otf->config, oh->version);
4706 tf->max_entries = ntohl(otf->max_entries);
4708 while (ofpbuf_size(&properties) > 0) {
4709 struct ofpbuf payload;
4713 error = pull_table_feature_property(&properties, &payload, &type);
4718 switch ((enum ofp13_table_feature_prop_type) type) {
4719 case OFPTFPT13_INSTRUCTIONS:
4720 error = parse_instruction_ids(&payload, loose,
4721 &tf->nonmiss.instructions);
4723 case OFPTFPT13_INSTRUCTIONS_MISS:
4724 error = parse_instruction_ids(&payload, loose,
4725 &tf->miss.instructions);
4728 case OFPTFPT13_NEXT_TABLES:
4729 error = parse_table_features_next_table(&payload,
4732 case OFPTFPT13_NEXT_TABLES_MISS:
4733 error = parse_table_features_next_table(&payload, tf->miss.next);
4736 case OFPTFPT13_WRITE_ACTIONS:
4737 error = parse_action_bitmap(&payload, oh->version,
4738 &tf->nonmiss.write.ofpacts);
4740 case OFPTFPT13_WRITE_ACTIONS_MISS:
4741 error = parse_action_bitmap(&payload, oh->version,
4742 &tf->miss.write.ofpacts);
4745 case OFPTFPT13_APPLY_ACTIONS:
4746 error = parse_action_bitmap(&payload, oh->version,
4747 &tf->nonmiss.apply.ofpacts);
4749 case OFPTFPT13_APPLY_ACTIONS_MISS:
4750 error = parse_action_bitmap(&payload, oh->version,
4751 &tf->miss.apply.ofpacts);
4754 case OFPTFPT13_MATCH:
4755 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4757 case OFPTFPT13_WILDCARDS:
4758 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4761 case OFPTFPT13_WRITE_SETFIELD:
4762 error = parse_oxms(&payload, loose,
4763 &tf->nonmiss.write.set_fields, NULL);
4765 case OFPTFPT13_WRITE_SETFIELD_MISS:
4766 error = parse_oxms(&payload, loose,
4767 &tf->miss.write.set_fields, NULL);
4769 case OFPTFPT13_APPLY_SETFIELD:
4770 error = parse_oxms(&payload, loose,
4771 &tf->nonmiss.apply.set_fields, NULL);
4773 case OFPTFPT13_APPLY_SETFIELD_MISS:
4774 error = parse_oxms(&payload, loose,
4775 &tf->miss.apply.set_fields, NULL);
4778 case OFPTFPT13_EXPERIMENTER:
4779 case OFPTFPT13_EXPERIMENTER_MISS:
4781 log_property(loose, "unknown table features property %"PRIu16,
4783 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4791 /* Fix inconsistencies:
4793 * - Turn on 'match' bits that are set in 'mask', because maskable
4794 * fields are matchable.
4796 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4797 * that is arbitrarily maskable can be wildcarded entirely.
4799 * - Turn off 'wildcard' bits that are not in 'match', because a field
4800 * must be matchable for it to be meaningfully wildcarded. */
4801 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4802 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4803 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4808 /* Encodes and returns a request to obtain the table features of a switch.
4809 * The message is encoded for OpenFlow version 'ofp_version'. */
4811 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4813 struct ofpbuf *request = NULL;
4815 switch (ofp_version) {
4819 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4820 "(\'-O OpenFlow13\')");
4824 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4835 put_fields_property(struct ofpbuf *reply,
4836 const struct mf_bitmap *fields,
4837 const struct mf_bitmap *masks,
4838 enum ofp13_table_feature_prop_type property,
4839 enum ofp_version version)
4844 start_ofs = start_property(reply, property);
4845 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4846 uint32_t h_oxm = mf_oxm_header(field, version);
4849 if (masks && bitmap_is_set(masks->bm, field)) {
4850 h_oxm = NXM_MAKE_WILD_HEADER(h_oxm);
4853 n_oxm = htonl(h_oxm);
4854 ofpbuf_put(reply, &n_oxm, sizeof n_oxm);
4856 end_property(reply, start_ofs);
4860 put_table_action_features(struct ofpbuf *reply,
4861 const struct ofputil_table_action_features *taf,
4862 enum ofp13_table_feature_prop_type actions_type,
4863 enum ofp13_table_feature_prop_type set_fields_type,
4864 int miss_offset, enum ofp_version version)
4868 start_ofs = start_property(reply, actions_type + miss_offset);
4869 put_bitmap_properties(reply,
4870 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4872 end_property(reply, start_ofs);
4874 put_fields_property(reply, &taf->set_fields, NULL,
4875 set_fields_type + miss_offset, version);
4879 put_table_instruction_features(
4880 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4881 int miss_offset, enum ofp_version version)
4886 start_ofs = start_property(reply, OFPTFPT13_INSTRUCTIONS + miss_offset);
4887 put_bitmap_properties(reply,
4888 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4890 end_property(reply, start_ofs);
4892 start_ofs = start_property(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4893 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4894 ofpbuf_put(reply, &table_id, 1);
4896 end_property(reply, start_ofs);
4898 put_table_action_features(reply, &tif->write,
4899 OFPTFPT13_WRITE_ACTIONS,
4900 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4901 put_table_action_features(reply, &tif->apply,
4902 OFPTFPT13_APPLY_ACTIONS,
4903 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4907 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4908 struct list *replies)
4910 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4911 enum ofp_version version = ofpmp_version(replies);
4912 size_t start_ofs = ofpbuf_size(reply);
4913 struct ofp13_table_features *otf;
4915 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4916 otf->table_id = tf->table_id;
4917 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4918 otf->metadata_match = tf->metadata_match;
4919 otf->metadata_write = tf->metadata_write;
4920 otf->config = ofputil_table_miss_to_config(tf->miss_config, version);
4921 otf->max_entries = htonl(tf->max_entries);
4923 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4924 put_table_instruction_features(reply, &tf->miss, 1, version);
4926 put_fields_property(reply, &tf->match, &tf->mask,
4927 OFPTFPT13_MATCH, version);
4928 put_fields_property(reply, &tf->wildcard, NULL,
4929 OFPTFPT13_WILDCARDS, version);
4931 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4932 otf->length = htons(ofpbuf_size(reply) - start_ofs);
4933 ofpmp_postappend(replies, start_ofs);
4936 /* ofputil_table_mod */
4938 /* Given 'config', taken from an OpenFlow 'version' message that specifies
4939 * table configuration (a table mod, table stats, or table features message),
4940 * returns the table miss configuration that it specifies. */
4941 static enum ofputil_table_miss
4942 ofputil_table_miss_from_config(ovs_be32 config_, enum ofp_version version)
4944 uint32_t config = ntohl(config_);
4946 if (version < OFP13_VERSION) {
4947 switch (config & OFPTC11_TABLE_MISS_MASK) {
4948 case OFPTC11_TABLE_MISS_CONTROLLER:
4949 return OFPUTIL_TABLE_MISS_CONTROLLER;
4951 case OFPTC11_TABLE_MISS_CONTINUE:
4952 return OFPUTIL_TABLE_MISS_CONTINUE;
4954 case OFPTC11_TABLE_MISS_DROP:
4955 return OFPUTIL_TABLE_MISS_DROP;
4958 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
4959 return OFPUTIL_TABLE_MISS_CONTROLLER;
4962 return OFPUTIL_TABLE_MISS_DEFAULT;
4966 /* Given a table miss configuration, returns the corresponding OpenFlow table
4967 * configuration for use in an OpenFlow message of the given 'version'. */
4969 ofputil_table_miss_to_config(enum ofputil_table_miss miss,
4970 enum ofp_version version)
4972 if (version < OFP13_VERSION) {
4974 case OFPUTIL_TABLE_MISS_CONTROLLER:
4975 case OFPUTIL_TABLE_MISS_DEFAULT:
4976 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
4978 case OFPUTIL_TABLE_MISS_CONTINUE:
4979 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
4981 case OFPUTIL_TABLE_MISS_DROP:
4982 return htonl(OFPTC11_TABLE_MISS_DROP);
4992 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
4993 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4995 ofputil_decode_table_mod(const struct ofp_header *oh,
4996 struct ofputil_table_mod *pm)
5001 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5002 raw = ofpraw_pull_assert(&b);
5004 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5005 const struct ofp11_table_mod *otm = ofpbuf_data(&b);
5007 pm->table_id = otm->table_id;
5008 pm->miss_config = ofputil_table_miss_from_config(otm->config,
5010 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5011 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5013 pm->table_id = otm->table_id;
5014 pm->miss_config = ofputil_table_miss_from_config(otm->config,
5016 /* We do not understand any properties yet, so we do not bother
5019 return OFPERR_OFPBRC_BAD_TYPE;
5025 /* Converts the abstract form of a "table mod" message in '*pm' into an OpenFlow
5026 * message suitable for 'protocol', and returns that encoded form in a buffer
5027 * owned by the caller. */
5029 ofputil_encode_table_mod(const struct ofputil_table_mod *pm,
5030 enum ofputil_protocol protocol)
5032 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5035 switch (ofp_version) {
5036 case OFP10_VERSION: {
5037 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5038 "(\'-O OpenFlow11\')");
5043 case OFP13_VERSION: {
5044 struct ofp11_table_mod *otm;
5046 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5047 otm = ofpbuf_put_zeros(b, sizeof *otm);
5048 otm->table_id = pm->table_id;
5049 otm->config = ofputil_table_miss_to_config(pm->miss_config,
5054 case OFP15_VERSION: {
5055 struct ofp14_table_mod *otm;
5057 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5058 otm = ofpbuf_put_zeros(b, sizeof *otm);
5059 otm->table_id = pm->table_id;
5060 otm->config = ofputil_table_miss_to_config(pm->miss_config,
5071 /* ofputil_role_request */
5073 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5074 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5075 * OFPERR_* value. */
5077 ofputil_decode_role_message(const struct ofp_header *oh,
5078 struct ofputil_role_request *rr)
5083 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5084 raw = ofpraw_pull_assert(&b);
5086 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5087 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5088 const struct ofp12_role_request *orr = ofpbuf_l3(&b);
5090 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5091 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5092 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5093 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5094 return OFPERR_OFPRRFC_BAD_ROLE;
5097 rr->role = ntohl(orr->role);
5098 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5099 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5100 : orr->generation_id == OVS_BE64_MAX) {
5101 rr->have_generation_id = false;
5102 rr->generation_id = 0;
5104 rr->have_generation_id = true;
5105 rr->generation_id = ntohll(orr->generation_id);
5107 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5108 raw == OFPRAW_NXT_ROLE_REPLY) {
5109 const struct nx_role_request *nrr = ofpbuf_l3(&b);
5111 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5112 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5113 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5115 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5116 nrr->role != htonl(NX_ROLE_MASTER) &&
5117 nrr->role != htonl(NX_ROLE_SLAVE)) {
5118 return OFPERR_OFPRRFC_BAD_ROLE;
5121 rr->role = ntohl(nrr->role) + 1;
5122 rr->have_generation_id = false;
5123 rr->generation_id = 0;
5131 /* Returns an encoded form of a role reply suitable for the "request" in a
5132 * buffer owned by the caller. */
5134 ofputil_encode_role_reply(const struct ofp_header *request,
5135 const struct ofputil_role_request *rr)
5140 raw = ofpraw_decode_assert(request);
5141 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5142 struct ofp12_role_request *orr;
5144 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5145 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5147 orr->role = htonl(rr->role);
5148 orr->generation_id = htonll(rr->have_generation_id
5151 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5152 struct nx_role_request *nrr;
5154 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5155 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5156 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5158 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5159 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5160 nrr->role = htonl(rr->role - 1);
5168 /* Encodes "role status" message 'status' for sending in the given
5169 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5170 * otherwise a null pointer. */
5172 ofputil_encode_role_status(const struct ofputil_role_status *status,
5173 enum ofputil_protocol protocol)
5175 enum ofp_version version;
5177 version = ofputil_protocol_to_ofp_version(protocol);
5178 if (version >= OFP14_VERSION) {
5179 struct ofp14_role_status *rstatus;
5182 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5184 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5185 rstatus->role = htonl(status->role);
5186 rstatus->reason = status->reason;
5187 rstatus->generation_id = htonll(status->generation_id);
5196 ofputil_decode_role_status(const struct ofp_header *oh,
5197 struct ofputil_role_status *rs)
5201 const struct ofp14_role_status *r;
5203 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5204 raw = ofpraw_pull_assert(&b);
5205 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5208 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5209 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5210 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5211 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5212 return OFPERR_OFPRRFC_BAD_ROLE;
5215 rs->role = ntohl(r->role);
5216 rs->generation_id = ntohll(r->generation_id);
5217 rs->reason = r->reason;
5224 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5225 * matched and a field that must be wildcarded. This function returns a bitmap
5226 * that contains both kinds of fields. */
5227 static struct mf_bitmap
5228 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5230 struct mf_bitmap wc = features->match;
5231 bitmap_not(wc.bm, MFF_N_IDS);
5232 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5236 struct ofp10_wc_map {
5237 enum ofp10_flow_wildcards wc10;
5238 enum mf_field_id mf;
5241 static const struct ofp10_wc_map ofp10_wc_map[] = {
5242 { OFPFW10_IN_PORT, MFF_IN_PORT },
5243 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5244 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5245 { OFPFW10_DL_DST, MFF_ETH_DST},
5246 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5247 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5248 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5249 { OFPFW10_TP_DST, MFF_TCP_DST },
5250 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5251 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5252 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5253 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5257 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5259 const struct ofp10_wc_map *p;
5262 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5263 if (bitmap_is_set(fields->bm, p->mf)) {
5270 static struct mf_bitmap
5271 mf_bitmap_from_of10(ovs_be32 wc10_)
5273 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5274 const struct ofp10_wc_map *p;
5275 uint32_t wc10 = ntohl(wc10_);
5277 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5278 if (wc10 & p->wc10) {
5279 bitmap_set1(fields.bm, p->mf);
5286 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5287 const struct ofputil_table_features *features,
5290 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5291 struct ofp10_table_stats *out;
5293 out = ofpbuf_put_zeros(buf, sizeof *out);
5294 out->table_id = features->table_id;
5295 ovs_strlcpy(out->name, features->name, sizeof out->name);
5296 out->wildcards = mf_bitmap_to_of10(&wc);
5297 out->max_entries = htonl(features->max_entries);
5298 out->active_count = htonl(stats->active_count);
5299 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5300 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5303 struct ofp11_wc_map {
5304 enum ofp11_flow_match_fields wc11;
5305 enum mf_field_id mf;
5308 static const struct ofp11_wc_map ofp11_wc_map[] = {
5309 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5310 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5311 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5312 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5313 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5314 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5315 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5316 { OFPFMF11_TP_DST, MFF_TCP_DST },
5317 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5318 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5319 /* I don't know what OFPFMF11_TYPE means. */
5320 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5321 { OFPFMF11_DL_DST, MFF_ETH_DST },
5322 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5323 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5324 { OFPFMF11_METADATA, MFF_METADATA },
5328 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5330 const struct ofp11_wc_map *p;
5333 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5334 if (bitmap_is_set(fields->bm, p->mf)) {
5341 static struct mf_bitmap
5342 mf_bitmap_from_of11(ovs_be32 wc11_)
5344 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5345 const struct ofp11_wc_map *p;
5346 uint32_t wc11 = ntohl(wc11_);
5348 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5349 if (wc11 & p->wc11) {
5350 bitmap_set1(fields.bm, p->mf);
5357 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5358 const struct ofputil_table_features *features,
5361 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5362 struct ofp11_table_stats *out;
5364 out = ofpbuf_put_zeros(buf, sizeof *out);
5365 out->table_id = features->table_id;
5366 ovs_strlcpy(out->name, features->name, sizeof out->name);
5367 out->wildcards = mf_bitmap_to_of11(&wc);
5368 out->match = mf_bitmap_to_of11(&features->match);
5369 out->instructions = ovsinst_bitmap_to_openflow(
5370 features->nonmiss.instructions, OFP11_VERSION);
5371 out->write_actions = ofpact_bitmap_to_openflow(
5372 features->nonmiss.write.ofpacts, OFP11_VERSION);
5373 out->apply_actions = ofpact_bitmap_to_openflow(
5374 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5375 out->config = htonl(features->miss_config);
5376 out->max_entries = htonl(features->max_entries);
5377 out->active_count = htonl(stats->active_count);
5378 out->lookup_count = htonll(stats->lookup_count);
5379 out->matched_count = htonll(stats->matched_count);
5383 mf_bitmap_to_oxm_bitmap(const struct mf_bitmap *fields,
5384 enum ofp_version version)
5386 uint64_t oxm_bitmap = 0;
5389 BITMAP_FOR_EACH_1 (i, MFF_N_IDS, fields->bm) {
5390 uint32_t oxm = mf_oxm_header(i, version);
5391 uint32_t vendor = NXM_VENDOR(oxm);
5392 int field = NXM_FIELD(oxm);
5394 if (vendor == OFPXMC12_OPENFLOW_BASIC && field < 64) {
5395 oxm_bitmap |= UINT64_C(1) << field;
5398 return htonll(oxm_bitmap);
5401 static struct mf_bitmap
5402 mf_bitmap_from_oxm_bitmap(ovs_be64 oxm_bitmap, enum ofp_version version)
5404 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5406 for (enum mf_field_id id = 0; id < MFF_N_IDS; id++) {
5407 const struct mf_field *f = mf_from_id(id);
5408 uint32_t oxm = f->oxm_header;
5409 uint32_t vendor = NXM_VENDOR(oxm);
5410 int field = NXM_FIELD(oxm);
5412 if (version >= f->oxm_version
5413 && vendor == OFPXMC12_OPENFLOW_BASIC
5415 && oxm_bitmap & htonll(UINT64_C(1) << field)) {
5416 bitmap_set1(fields.bm, id);
5423 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5424 const struct ofputil_table_features *features,
5427 struct ofp12_table_stats *out;
5429 out = ofpbuf_put_zeros(buf, sizeof *out);
5430 out->table_id = features->table_id;
5431 ovs_strlcpy(out->name, features->name, sizeof out->name);
5432 out->match = mf_bitmap_to_oxm_bitmap(&features->match, OFP12_VERSION);
5433 out->wildcards = mf_bitmap_to_oxm_bitmap(&features->wildcard,
5435 out->write_actions = ofpact_bitmap_to_openflow(
5436 features->nonmiss.write.ofpacts, OFP12_VERSION);
5437 out->apply_actions = ofpact_bitmap_to_openflow(
5438 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5439 out->write_setfields = mf_bitmap_to_oxm_bitmap(
5440 &features->nonmiss.write.set_fields, OFP12_VERSION);
5441 out->apply_setfields = mf_bitmap_to_oxm_bitmap(
5442 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5443 out->metadata_match = features->metadata_match;
5444 out->metadata_write = features->metadata_write;
5445 out->instructions = ovsinst_bitmap_to_openflow(
5446 features->nonmiss.instructions, OFP12_VERSION);
5447 out->config = ofputil_table_miss_to_config(features->miss_config,
5449 out->max_entries = htonl(features->max_entries);
5450 out->active_count = htonl(stats->active_count);
5451 out->lookup_count = htonll(stats->lookup_count);
5452 out->matched_count = htonll(stats->matched_count);
5456 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5459 struct ofp13_table_stats *out;
5461 out = ofpbuf_put_zeros(buf, sizeof *out);
5462 out->table_id = stats->table_id;
5463 out->active_count = htonl(stats->active_count);
5464 out->lookup_count = htonll(stats->lookup_count);
5465 out->matched_count = htonll(stats->matched_count);
5469 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5471 return ofpraw_alloc_stats_reply(request, 0);
5475 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5476 const struct ofputil_table_stats *stats,
5477 const struct ofputil_table_features *features)
5479 struct ofp_header *oh = ofpbuf_l2(reply);
5481 ovs_assert(stats->table_id == features->table_id);
5483 switch ((enum ofp_version) oh->version) {
5485 ofputil_put_ofp10_table_stats(stats, features, reply);
5489 ofputil_put_ofp11_table_stats(stats, features, reply);
5493 ofputil_put_ofp12_table_stats(stats, features, reply);
5499 ofputil_put_ofp13_table_stats(stats, reply);
5508 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5509 struct ofputil_table_stats *stats,
5510 struct ofputil_table_features *features)
5512 struct ofp10_table_stats *ots;
5514 ots = ofpbuf_try_pull(msg, sizeof *ots);
5516 return OFPERR_OFPBRC_BAD_LEN;
5519 features->table_id = ots->table_id;
5520 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5521 features->max_entries = ntohl(ots->max_entries);
5522 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5524 stats->table_id = ots->table_id;
5525 stats->active_count = ntohl(ots->active_count);
5526 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5527 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5533 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5534 struct ofputil_table_stats *stats,
5535 struct ofputil_table_features *features)
5537 struct ofp11_table_stats *ots;
5539 ots = ofpbuf_try_pull(msg, sizeof *ots);
5541 return OFPERR_OFPBRC_BAD_LEN;
5544 features->table_id = ots->table_id;
5545 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5546 features->max_entries = ntohl(ots->max_entries);
5547 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5548 ots->instructions, OFP11_VERSION);
5549 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5550 ots->write_actions, OFP11_VERSION);
5551 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5552 ots->write_actions, OFP11_VERSION);
5553 features->miss = features->nonmiss;
5554 features->miss_config = ofputil_table_miss_from_config(ots->config,
5556 features->match = mf_bitmap_from_of11(ots->match);
5557 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5558 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5560 stats->table_id = ots->table_id;
5561 stats->active_count = ntohl(ots->active_count);
5562 stats->lookup_count = ntohll(ots->lookup_count);
5563 stats->matched_count = ntohll(ots->matched_count);
5569 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5570 struct ofputil_table_stats *stats,
5571 struct ofputil_table_features *features)
5573 struct ofp12_table_stats *ots;
5575 ots = ofpbuf_try_pull(msg, sizeof *ots);
5577 return OFPERR_OFPBRC_BAD_LEN;
5580 features->table_id = ots->table_id;
5581 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5582 features->metadata_match = ots->metadata_match;
5583 features->metadata_write = ots->metadata_write;
5584 features->miss_config = ofputil_table_miss_from_config(ots->config,
5586 features->max_entries = ntohl(ots->max_entries);
5588 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5589 ots->instructions, OFP12_VERSION);
5590 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5591 ots->write_actions, OFP12_VERSION);
5592 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5593 ots->apply_actions, OFP12_VERSION);
5594 features->nonmiss.write.set_fields = mf_bitmap_from_oxm_bitmap(
5595 ots->write_setfields, OFP12_VERSION);
5596 features->nonmiss.apply.set_fields = mf_bitmap_from_oxm_bitmap(
5597 ots->apply_setfields, OFP12_VERSION);
5598 features->miss = features->nonmiss;
5600 features->match = mf_bitmap_from_oxm_bitmap(ots->match, OFP12_VERSION);
5601 features->wildcard = mf_bitmap_from_oxm_bitmap(ots->wildcards,
5603 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
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_ofp13_table_stats(struct ofpbuf *msg,
5615 struct ofputil_table_stats *stats,
5616 struct ofputil_table_features *features)
5618 struct ofp13_table_stats *ots;
5620 ots = ofpbuf_try_pull(msg, sizeof *ots);
5622 return OFPERR_OFPBRC_BAD_LEN;
5625 features->table_id = ots->table_id;
5627 stats->table_id = ots->table_id;
5628 stats->active_count = ntohl(ots->active_count);
5629 stats->lookup_count = ntohll(ots->lookup_count);
5630 stats->matched_count = ntohll(ots->matched_count);
5636 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
5637 struct ofputil_table_stats *stats,
5638 struct ofputil_table_features *features)
5640 const struct ofp_header *oh;
5643 ofpraw_pull_assert(msg);
5647 if (!ofpbuf_size(msg)) {
5651 memset(stats, 0, sizeof *stats);
5652 memset(features, 0, sizeof *features);
5654 switch ((enum ofp_version) oh->version) {
5656 return ofputil_decode_ofp10_table_stats(msg, stats, features);
5659 return ofputil_decode_ofp11_table_stats(msg, stats, features);
5662 return ofputil_decode_ofp12_table_stats(msg, stats, features);
5667 return ofputil_decode_ofp13_table_stats(msg, stats, features);
5674 /* ofputil_flow_monitor_request */
5676 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
5677 * ofputil_flow_monitor_request in 'rq'.
5679 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
5680 * message. Calling this function multiple times for a single 'msg' iterates
5681 * through the requests. The caller must initially leave 'msg''s layer
5682 * pointers null and not modify them between calls.
5684 * Returns 0 if successful, EOF if no requests were left in this 'msg',
5685 * otherwise an OFPERR_* value. */
5687 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
5690 struct nx_flow_monitor_request *nfmr;
5694 ofpraw_pull_assert(msg);
5697 if (!ofpbuf_size(msg)) {
5701 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
5703 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
5704 "leftover bytes at end", ofpbuf_size(msg));
5705 return OFPERR_OFPBRC_BAD_LEN;
5708 flags = ntohs(nfmr->flags);
5709 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
5710 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
5711 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
5712 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
5714 return OFPERR_OFPMOFC_BAD_FLAGS;
5717 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
5718 return OFPERR_NXBRC_MUST_BE_ZERO;
5721 rq->id = ntohl(nfmr->id);
5723 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
5724 rq->table_id = nfmr->table_id;
5726 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
5730 ofputil_append_flow_monitor_request(
5731 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
5733 struct nx_flow_monitor_request *nfmr;
5737 if (!ofpbuf_size(msg)) {
5738 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
5741 start_ofs = ofpbuf_size(msg);
5742 ofpbuf_put_zeros(msg, sizeof *nfmr);
5743 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
5745 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
5746 nfmr->id = htonl(rq->id);
5747 nfmr->flags = htons(rq->flags);
5748 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
5749 nfmr->match_len = htons(match_len);
5750 nfmr->table_id = rq->table_id;
5753 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
5754 * into an abstract ofputil_flow_update in 'update'. The caller must have
5755 * initialized update->match to point to space allocated for a match.
5757 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
5758 * actions (except for NXFME_ABBREV, which never includes actions). The caller
5759 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
5760 * will point into the 'ofpacts' buffer.
5762 * Multiple flow updates can be packed into a single OpenFlow message. Calling
5763 * this function multiple times for a single 'msg' iterates through the
5764 * updates. The caller must initially leave 'msg''s layer pointers null and
5765 * not modify them between calls.
5767 * Returns 0 if successful, EOF if no updates were left in this 'msg',
5768 * otherwise an OFPERR_* value. */
5770 ofputil_decode_flow_update(struct ofputil_flow_update *update,
5771 struct ofpbuf *msg, struct ofpbuf *ofpacts)
5773 struct nx_flow_update_header *nfuh;
5774 unsigned int length;
5775 struct ofp_header *oh;
5778 ofpraw_pull_assert(msg);
5781 if (!ofpbuf_size(msg)) {
5785 if (ofpbuf_size(msg) < sizeof(struct nx_flow_update_header)) {
5791 nfuh = ofpbuf_data(msg);
5792 update->event = ntohs(nfuh->event);
5793 length = ntohs(nfuh->length);
5794 if (length > ofpbuf_size(msg) || length % 8) {
5798 if (update->event == NXFME_ABBREV) {
5799 struct nx_flow_update_abbrev *nfua;
5801 if (length != sizeof *nfua) {
5805 nfua = ofpbuf_pull(msg, sizeof *nfua);
5806 update->xid = nfua->xid;
5808 } else if (update->event == NXFME_ADDED
5809 || update->event == NXFME_DELETED
5810 || update->event == NXFME_MODIFIED) {
5811 struct nx_flow_update_full *nfuf;
5812 unsigned int actions_len;
5813 unsigned int match_len;
5816 if (length < sizeof *nfuf) {
5820 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
5821 match_len = ntohs(nfuf->match_len);
5822 if (sizeof *nfuf + match_len > length) {
5826 update->reason = ntohs(nfuf->reason);
5827 update->idle_timeout = ntohs(nfuf->idle_timeout);
5828 update->hard_timeout = ntohs(nfuf->hard_timeout);
5829 update->table_id = nfuf->table_id;
5830 update->cookie = nfuf->cookie;
5831 update->priority = ntohs(nfuf->priority);
5833 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
5838 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
5839 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
5845 update->ofpacts = ofpbuf_data(ofpacts);
5846 update->ofpacts_len = ofpbuf_size(ofpacts);
5849 VLOG_WARN_RL(&bad_ofmsg_rl,
5850 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
5851 ntohs(nfuh->event));
5852 return OFPERR_NXBRC_FM_BAD_EVENT;
5856 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
5857 "leftover bytes at end", ofpbuf_size(msg));
5858 return OFPERR_OFPBRC_BAD_LEN;
5862 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
5864 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
5866 return ntohl(cancel->id);
5870 ofputil_encode_flow_monitor_cancel(uint32_t id)
5872 struct nx_flow_monitor_cancel *nfmc;
5875 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
5876 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
5877 nfmc->id = htonl(id);
5882 ofputil_start_flow_update(struct list *replies)
5886 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
5890 list_push_back(replies, &msg->list_node);
5894 ofputil_append_flow_update(const struct ofputil_flow_update *update,
5895 struct list *replies)
5897 enum ofp_version version = ofpmp_version(replies);
5898 struct nx_flow_update_header *nfuh;
5902 msg = ofpbuf_from_list(list_back(replies));
5903 start_ofs = ofpbuf_size(msg);
5905 if (update->event == NXFME_ABBREV) {
5906 struct nx_flow_update_abbrev *nfua;
5908 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
5909 nfua->xid = update->xid;
5911 struct nx_flow_update_full *nfuf;
5914 ofpbuf_put_zeros(msg, sizeof *nfuf);
5915 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
5916 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
5918 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
5919 nfuf->reason = htons(update->reason);
5920 nfuf->priority = htons(update->priority);
5921 nfuf->idle_timeout = htons(update->idle_timeout);
5922 nfuf->hard_timeout = htons(update->hard_timeout);
5923 nfuf->match_len = htons(match_len);
5924 nfuf->table_id = update->table_id;
5925 nfuf->cookie = update->cookie;
5928 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
5929 nfuh->length = htons(ofpbuf_size(msg) - start_ofs);
5930 nfuh->event = htons(update->event);
5932 ofpmp_postappend(replies, start_ofs);
5936 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
5937 enum ofputil_protocol protocol)
5939 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5943 size = po->ofpacts_len;
5944 if (po->buffer_id == UINT32_MAX) {
5945 size += po->packet_len;
5948 switch (ofp_version) {
5949 case OFP10_VERSION: {
5950 struct ofp10_packet_out *opo;
5953 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
5954 ofpbuf_put_zeros(msg, sizeof *opo);
5955 actions_ofs = ofpbuf_size(msg);
5956 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
5959 opo = ofpbuf_l3(msg);
5960 opo->buffer_id = htonl(po->buffer_id);
5961 opo->in_port = htons(ofp_to_u16(po->in_port));
5962 opo->actions_len = htons(ofpbuf_size(msg) - actions_ofs);
5970 case OFP15_VERSION: {
5971 struct ofp11_packet_out *opo;
5974 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
5975 ofpbuf_put_zeros(msg, sizeof *opo);
5976 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
5978 opo = ofpbuf_l3(msg);
5979 opo->buffer_id = htonl(po->buffer_id);
5980 opo->in_port = ofputil_port_to_ofp11(po->in_port);
5981 opo->actions_len = htons(len);
5989 if (po->buffer_id == UINT32_MAX) {
5990 ofpbuf_put(msg, po->packet, po->packet_len);
5993 ofpmsg_update_length(msg);
5998 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6000 make_echo_request(enum ofp_version ofp_version)
6002 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6006 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6007 * OFPT_ECHO_REQUEST message in 'rq'. */
6009 make_echo_reply(const struct ofp_header *rq)
6011 struct ofpbuf rq_buf;
6012 struct ofpbuf *reply;
6014 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
6015 ofpraw_pull_assert(&rq_buf);
6017 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, ofpbuf_size(&rq_buf));
6018 ofpbuf_put(reply, ofpbuf_data(&rq_buf), ofpbuf_size(&rq_buf));
6023 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6027 switch (ofp_version) {
6033 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6037 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6044 return ofpraw_alloc(type, ofp_version, 0);
6048 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
6050 switch (flags & OFPC_FRAG_MASK) {
6051 case OFPC_FRAG_NORMAL: return "normal";
6052 case OFPC_FRAG_DROP: return "drop";
6053 case OFPC_FRAG_REASM: return "reassemble";
6054 case OFPC_FRAG_NX_MATCH: return "nx-match";
6061 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
6063 if (!strcasecmp(s, "normal")) {
6064 *flags = OFPC_FRAG_NORMAL;
6065 } else if (!strcasecmp(s, "drop")) {
6066 *flags = OFPC_FRAG_DROP;
6067 } else if (!strcasecmp(s, "reassemble")) {
6068 *flags = OFPC_FRAG_REASM;
6069 } else if (!strcasecmp(s, "nx-match")) {
6070 *flags = OFPC_FRAG_NX_MATCH;
6077 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6078 * port number and stores the latter in '*ofp10_port', for the purpose of
6079 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6080 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6082 * See the definition of OFP11_MAX for an explanation of the mapping. */
6084 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6086 uint32_t ofp11_port_h = ntohl(ofp11_port);
6088 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6089 *ofp10_port = u16_to_ofp(ofp11_port_h);
6091 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6092 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6095 *ofp10_port = OFPP_NONE;
6096 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6097 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6098 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6099 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6100 return OFPERR_OFPBAC_BAD_OUT_PORT;
6104 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6105 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6107 * See the definition of OFP11_MAX for an explanation of the mapping. */
6109 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6111 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6112 ? ofp_to_u16(ofp10_port)
6113 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6116 #define OFPUTIL_NAMED_PORTS \
6117 OFPUTIL_NAMED_PORT(IN_PORT) \
6118 OFPUTIL_NAMED_PORT(TABLE) \
6119 OFPUTIL_NAMED_PORT(NORMAL) \
6120 OFPUTIL_NAMED_PORT(FLOOD) \
6121 OFPUTIL_NAMED_PORT(ALL) \
6122 OFPUTIL_NAMED_PORT(CONTROLLER) \
6123 OFPUTIL_NAMED_PORT(LOCAL) \
6124 OFPUTIL_NAMED_PORT(ANY)
6126 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6127 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6128 OFPUTIL_NAMED_PORTS \
6129 OFPUTIL_NAMED_PORT(NONE)
6131 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6132 * integer or, for reserved ports, the standard OpenFlow name for the port
6135 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6136 * or name. The caller should issue an error message in this case, because
6137 * this function usually does not. (This gives the caller an opportunity to
6138 * look up the port name another way, e.g. by contacting the switch and listing
6139 * the names of all its ports).
6141 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6142 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6143 * range as described in include/openflow/openflow-1.1.h. */
6145 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6147 unsigned int port32; /* int is at least 32 bits wide. */
6150 VLOG_WARN("Negative value %s is not a valid port number.", s);
6154 if (str_to_uint(s, 10, &port32)) {
6155 if (port32 < ofp_to_u16(OFPP_MAX)) {
6157 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6158 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6159 "be translated to %u when talking to an OF1.1 or "
6160 "later controller", port32, port32 + OFPP11_OFFSET);
6161 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6162 char name[OFP_MAX_PORT_NAME_LEN];
6164 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6165 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6166 "for compatibility with OpenFlow 1.1 and later",
6168 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6169 VLOG_WARN("port %u is outside the supported range 0 through "
6170 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6171 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6174 port32 -= OFPP11_OFFSET;
6177 *portp = u16_to_ofp(port32);
6184 static const struct pair pairs[] = {
6185 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6186 OFPUTIL_NAMED_PORTS_WITH_NONE
6187 #undef OFPUTIL_NAMED_PORT
6189 const struct pair *p;
6191 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6192 if (!strcasecmp(s, p->name)) {
6201 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6202 * Most ports' string representation is just the port number, but for special
6203 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6205 ofputil_format_port(ofp_port_t port, struct ds *s)
6207 char name[OFP_MAX_PORT_NAME_LEN];
6209 ofputil_port_to_string(port, name, sizeof name);
6210 ds_put_cstr(s, name);
6213 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6214 * representation of OpenFlow port number 'port'. Most ports are represented
6215 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6216 * by name, e.g. "LOCAL". */
6218 ofputil_port_to_string(ofp_port_t port,
6219 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6222 #define OFPUTIL_NAMED_PORT(NAME) \
6224 ovs_strlcpy(namebuf, #NAME, bufsize); \
6227 #undef OFPUTIL_NAMED_PORT
6230 snprintf(namebuf, bufsize, "%"PRIu16, port);
6235 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6236 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6237 * (either "ANY" or "ALL").
6239 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6242 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6244 if (!strcasecmp(s, "any")) {
6245 *group_idp = OFPG11_ANY;
6246 } else if (!strcasecmp(s, "all")) {
6247 *group_idp = OFPG11_ALL;
6248 } else if (!str_to_uint(s, 10, group_idp)) {
6249 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6250 "32-bit nonnegative integers or the keywords ANY or "
6258 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6259 * Most groups' string representation is just the number, but for special
6260 * groups, e.g. OFPG11_ALL, it is the name, e.g. "ALL". */
6262 ofputil_format_group(uint32_t group_id, struct ds *s)
6264 char name[MAX_GROUP_NAME_LEN];
6266 ofputil_group_to_string(group_id, name, sizeof name);
6267 ds_put_cstr(s, name);
6271 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6272 * representation of OpenFlow group ID 'group_id'. Most group are represented
6273 * as just their number, but special groups, e.g. OFPG11_ALL, are represented
6274 * by name, e.g. "ALL". */
6276 ofputil_group_to_string(uint32_t group_id,
6277 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6281 ovs_strlcpy(namebuf, "ALL", bufsize);
6285 ovs_strlcpy(namebuf, "ANY", bufsize);
6289 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6294 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6295 * 'ofp_version', tries to pull the first element from the array. If
6296 * successful, initializes '*pp' with an abstract representation of the
6297 * port and returns 0. If no ports remain to be decoded, returns EOF.
6298 * On an error, returns a positive OFPERR_* value. */
6300 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6301 struct ofputil_phy_port *pp)
6303 memset(pp, 0, sizeof *pp);
6305 switch (ofp_version) {
6306 case OFP10_VERSION: {
6307 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6308 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6312 case OFP13_VERSION: {
6313 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6314 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6318 return ofpbuf_size(b) ? ofputil_pull_ofp14_port(pp, b) : EOF;
6324 /* ofp-util.def lists the mapping from names to action. */
6325 static const char *const names[OFPUTIL_N_ACTIONS] = {
6327 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME,
6328 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
6329 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
6330 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
6331 #include "ofp-util.def"
6334 /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if
6335 * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1
6336 * if 'name' is not the name of any action. */
6338 ofputil_action_code_from_name(const char *name)
6340 const char *const *p;
6342 for (p = names; p < &names[ARRAY_SIZE(names)]; p++) {
6343 if (*p && !strcasecmp(name, *p)) {
6350 /* Returns name corresponding to the 'enum ofputil_action_code',
6351 * or "Unkonwn action", if the name is not available. */
6353 ofputil_action_name_from_code(enum ofputil_action_code code)
6355 return code < (int)OFPUTIL_N_ACTIONS && names[code] ? names[code]
6359 enum ofputil_action_code
6360 ofputil_action_code_from_ofp13_action(enum ofp13_action_type type)
6364 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6366 return OFPUTIL_##ENUM;
6367 #include "ofp-util.def"
6370 return OFPUTIL_ACTION_INVALID;
6374 /* Appends an action of the type specified by 'code' to 'buf' and returns the
6375 * action. Initializes the parts of 'action' that identify it as having type
6376 * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that
6377 * have variable length, the length used and cleared is that of struct
6380 ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf)
6383 case OFPUTIL_ACTION_INVALID:
6384 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
6385 #include "ofp-util.def"
6388 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
6389 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
6390 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6391 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
6392 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6393 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
6394 #include "ofp-util.def"
6399 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
6401 ofputil_init_##ENUM(struct STRUCT *s) \
6403 memset(s, 0, sizeof *s); \
6404 s->type = htons(ENUM); \
6405 s->len = htons(sizeof *s); \
6409 ofputil_put_##ENUM(struct ofpbuf *buf) \
6411 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
6412 ofputil_init_##ENUM(s); \
6415 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6416 OFPAT10_ACTION(ENUM, STRUCT, NAME)
6417 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6418 OFPAT10_ACTION(ENUM, STRUCT, NAME)
6419 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6421 ofputil_init_##ENUM(struct STRUCT *s) \
6423 memset(s, 0, sizeof *s); \
6424 s->type = htons(OFPAT10_VENDOR); \
6425 s->len = htons(sizeof *s); \
6426 s->vendor = htonl(NX_VENDOR_ID); \
6427 s->subtype = htons(ENUM); \
6431 ofputil_put_##ENUM(struct ofpbuf *buf) \
6433 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
6434 ofputil_init_##ENUM(s); \
6437 #include "ofp-util.def"
6440 ofputil_normalize_match__(struct match *match, bool may_log)
6443 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6444 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6445 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6446 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6447 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6448 MAY_ARP_THA = 1 << 5, /* arp_tha */
6449 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6450 MAY_ND_TARGET = 1 << 7, /* nd_target */
6451 MAY_MPLS = 1 << 8, /* mpls label and tc */
6454 struct flow_wildcards wc;
6456 /* Figure out what fields may be matched. */
6457 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6458 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6459 if (match->flow.nw_proto == IPPROTO_TCP ||
6460 match->flow.nw_proto == IPPROTO_UDP ||
6461 match->flow.nw_proto == IPPROTO_SCTP ||
6462 match->flow.nw_proto == IPPROTO_ICMP) {
6463 may_match |= MAY_TP_ADDR;
6465 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6466 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6467 if (match->flow.nw_proto == IPPROTO_TCP ||
6468 match->flow.nw_proto == IPPROTO_UDP ||
6469 match->flow.nw_proto == IPPROTO_SCTP) {
6470 may_match |= MAY_TP_ADDR;
6471 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6472 may_match |= MAY_TP_ADDR;
6473 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6474 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6475 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6476 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6479 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6480 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6481 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6482 } else if (eth_type_mpls(match->flow.dl_type)) {
6483 may_match = MAY_MPLS;
6488 /* Clear the fields that may not be matched. */
6490 if (!(may_match & MAY_NW_ADDR)) {
6491 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6493 if (!(may_match & MAY_TP_ADDR)) {
6494 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6496 if (!(may_match & MAY_NW_PROTO)) {
6497 wc.masks.nw_proto = 0;
6499 if (!(may_match & MAY_IPVx)) {
6500 wc.masks.nw_tos = 0;
6501 wc.masks.nw_ttl = 0;
6503 if (!(may_match & MAY_ARP_SHA)) {
6504 memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN);
6506 if (!(may_match & MAY_ARP_THA)) {
6507 memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN);
6509 if (!(may_match & MAY_IPV6)) {
6510 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6511 wc.masks.ipv6_label = htonl(0);
6513 if (!(may_match & MAY_ND_TARGET)) {
6514 wc.masks.nd_target = in6addr_any;
6516 if (!(may_match & MAY_MPLS)) {
6517 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6520 /* Log any changes. */
6521 if (!flow_wildcards_equal(&wc, &match->wc)) {
6522 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6523 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6526 match_zero_wildcarded_fields(match);
6529 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6530 VLOG_INFO("normalization changed ofp_match, details:");
6531 VLOG_INFO(" pre: %s", pre);
6532 VLOG_INFO("post: %s", post);
6539 /* "Normalizes" the wildcards in 'match'. That means:
6541 * 1. If the type of level N is known, then only the valid fields for that
6542 * level may be specified. For example, ARP does not have a TOS field,
6543 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6544 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6545 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6548 * 2. If the type of level N is not known (or not understood by Open
6549 * vSwitch), then no fields at all for that level may be specified. For
6550 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6551 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6554 * If this function changes 'match', it logs a rate-limited informational
6557 ofputil_normalize_match(struct match *match)
6559 ofputil_normalize_match__(match, true);
6562 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6563 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6564 * sense for use on flows received from elsewhere (so that a bug in the program
6565 * that sent them can be reported and corrected). */
6567 ofputil_normalize_match_quiet(struct match *match)
6569 ofputil_normalize_match__(match, false);
6572 /* Parses a key or a key-value pair from '*stringp'.
6574 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6575 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6576 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6577 * are substrings of '*stringp' created by replacing some of its bytes by null
6578 * terminators. Returns true.
6580 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6581 * NULL and returns false. */
6583 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6585 char *pos, *key, *value;
6589 pos += strspn(pos, ", \t\r\n");
6591 *keyp = *valuep = NULL;
6596 key_len = strcspn(pos, ":=(, \t\r\n");
6597 if (key[key_len] == ':' || key[key_len] == '=') {
6598 /* The value can be separated by a colon. */
6601 value = key + key_len + 1;
6602 value_len = strcspn(value, ", \t\r\n");
6603 pos = value + value_len + (value[value_len] != '\0');
6604 value[value_len] = '\0';
6605 } else if (key[key_len] == '(') {
6606 /* The value can be surrounded by balanced parentheses. The outermost
6607 * set of parentheses is removed. */
6611 value = key + key_len + 1;
6612 for (value_len = 0; level > 0; value_len++) {
6613 switch (value[value_len]) {
6627 value[value_len - 1] = '\0';
6628 pos = value + value_len;
6630 /* There might be no value at all. */
6631 value = key + key_len; /* Will become the empty string below. */
6632 pos = key + key_len + (key[key_len] != '\0');
6634 key[key_len] = '\0';
6642 /* Encode a dump ports request for 'port', the encoded message
6643 * will be for Open Flow version 'ofp_version'. Returns message
6644 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6646 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6648 struct ofpbuf *request;
6650 switch (ofp_version) {
6651 case OFP10_VERSION: {
6652 struct ofp10_port_stats_request *req;
6653 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6654 req = ofpbuf_put_zeros(request, sizeof *req);
6655 req->port_no = htons(ofp_to_u16(port));
6662 case OFP15_VERSION: {
6663 struct ofp11_port_stats_request *req;
6664 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6665 req = ofpbuf_put_zeros(request, sizeof *req);
6666 req->port_no = ofputil_port_to_ofp11(port);
6677 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6678 struct ofp10_port_stats *ps10)
6680 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6681 memset(ps10->pad, 0, sizeof ps10->pad);
6682 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6683 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6684 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6685 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6686 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6687 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6688 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6689 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6690 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6691 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6692 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6693 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6697 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6698 struct ofp11_port_stats *ps11)
6700 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6701 memset(ps11->pad, 0, sizeof ps11->pad);
6702 ps11->rx_packets = htonll(ops->stats.rx_packets);
6703 ps11->tx_packets = htonll(ops->stats.tx_packets);
6704 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6705 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6706 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6707 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6708 ps11->rx_errors = htonll(ops->stats.rx_errors);
6709 ps11->tx_errors = htonll(ops->stats.tx_errors);
6710 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6711 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
6712 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6713 ps11->collisions = htonll(ops->stats.collisions);
6717 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
6718 struct ofp13_port_stats *ps13)
6720 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
6721 ps13->duration_sec = htonl(ops->duration_sec);
6722 ps13->duration_nsec = htonl(ops->duration_nsec);
6726 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
6727 struct list *replies)
6729 struct ofp14_port_stats_prop_ethernet *eth;
6730 struct ofp14_port_stats *ps14;
6731 struct ofpbuf *reply;
6733 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
6735 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
6736 ps14->length = htons(sizeof *ps14 + sizeof *eth);
6737 memset(ps14->pad, 0, sizeof ps14->pad);
6738 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
6739 ps14->duration_sec = htonl(ops->duration_sec);
6740 ps14->duration_nsec = htonl(ops->duration_nsec);
6741 ps14->rx_packets = htonll(ops->stats.rx_packets);
6742 ps14->tx_packets = htonll(ops->stats.tx_packets);
6743 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
6744 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
6745 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
6746 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
6747 ps14->rx_errors = htonll(ops->stats.rx_errors);
6748 ps14->tx_errors = htonll(ops->stats.tx_errors);
6750 eth = ofpbuf_put_uninit(reply, sizeof *eth);
6751 eth->type = htons(OFPPSPT14_ETHERNET);
6752 eth->length = htons(sizeof *eth);
6753 memset(eth->pad, 0, sizeof eth->pad);
6754 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6755 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
6756 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6757 eth->collisions = htonll(ops->stats.collisions);
6760 /* Encode a ports stat for 'ops' and append it to 'replies'. */
6762 ofputil_append_port_stat(struct list *replies,
6763 const struct ofputil_port_stats *ops)
6765 switch (ofpmp_version(replies)) {
6766 case OFP13_VERSION: {
6767 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6768 ofputil_port_stats_to_ofp13(ops, reply);
6772 case OFP11_VERSION: {
6773 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6774 ofputil_port_stats_to_ofp11(ops, reply);
6778 case OFP10_VERSION: {
6779 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6780 ofputil_port_stats_to_ofp10(ops, reply);
6786 ofputil_append_ofp14_port_stats(ops, replies);
6795 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
6796 const struct ofp10_port_stats *ps10)
6798 memset(ops, 0, sizeof *ops);
6800 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
6801 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
6802 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
6803 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
6804 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
6805 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
6806 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
6807 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
6808 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
6809 ops->stats.rx_frame_errors =
6810 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
6811 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
6812 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
6813 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
6814 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
6820 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
6821 const struct ofp11_port_stats *ps11)
6825 memset(ops, 0, sizeof *ops);
6826 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
6831 ops->stats.rx_packets = ntohll(ps11->rx_packets);
6832 ops->stats.tx_packets = ntohll(ps11->tx_packets);
6833 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
6834 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
6835 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
6836 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
6837 ops->stats.rx_errors = ntohll(ps11->rx_errors);
6838 ops->stats.tx_errors = ntohll(ps11->tx_errors);
6839 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
6840 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
6841 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
6842 ops->stats.collisions = ntohll(ps11->collisions);
6843 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
6849 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
6850 const struct ofp13_port_stats *ps13)
6852 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
6854 ops->duration_sec = ntohl(ps13->duration_sec);
6855 ops->duration_nsec = ntohl(ps13->duration_nsec);
6861 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
6862 struct ofputil_port_stats *ops)
6864 const struct ofp14_port_stats_prop_ethernet *eth = ofpbuf_data(payload);
6866 if (ofpbuf_size(payload) != sizeof *eth) {
6867 return OFPERR_OFPBPC_BAD_LEN;
6870 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
6871 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
6872 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
6873 ops->stats.collisions = ntohll(eth->collisions);
6879 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
6882 const struct ofp14_port_stats *ps14;
6883 struct ofpbuf properties;
6887 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
6889 return OFPERR_OFPBRC_BAD_LEN;
6892 len = ntohs(ps14->length);
6893 if (len < sizeof *ps14 || len - sizeof *ps14 > ofpbuf_size(msg)) {
6894 return OFPERR_OFPBRC_BAD_LEN;
6896 len -= sizeof *ps14;
6897 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
6899 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
6904 ops->duration_sec = ntohl(ps14->duration_sec);
6905 ops->duration_nsec = ntohl(ps14->duration_nsec);
6906 ops->stats.rx_packets = ntohll(ps14->rx_packets);
6907 ops->stats.tx_packets = ntohll(ps14->tx_packets);
6908 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
6909 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
6910 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
6911 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
6912 ops->stats.rx_errors = ntohll(ps14->rx_errors);
6913 ops->stats.tx_errors = ntohll(ps14->tx_errors);
6914 ops->stats.rx_frame_errors = UINT64_MAX;
6915 ops->stats.rx_over_errors = UINT64_MAX;
6916 ops->stats.rx_crc_errors = UINT64_MAX;
6917 ops->stats.collisions = UINT64_MAX;
6919 while (ofpbuf_size(&properties) > 0) {
6920 struct ofpbuf payload;
6924 error = ofputil_pull_property(&properties, &payload, &type);
6930 case OFPPSPT14_ETHERNET:
6931 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
6935 log_property(true, "unknown port stats property %"PRIu16, type);
6948 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
6951 ofputil_count_port_stats(const struct ofp_header *oh)
6953 struct ofputil_port_stats ps;
6957 ofpbuf_use_const(&b, oh, ntohs(oh->length));
6958 ofpraw_pull_assert(&b);
6959 while (!ofputil_decode_port_stats(&ps, &b)) {
6965 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
6966 * ofputil_port_stats in 'ps'.
6968 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
6969 * message. Calling this function multiple times for a single 'msg' iterates
6970 * through the replies. The caller must initially leave 'msg''s layer pointers
6971 * null and not modify them between calls.
6973 * Returns 0 if successful, EOF if no replies were left in this 'msg',
6974 * otherwise a positive errno value. */
6976 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
6982 ? ofpraw_decode(&raw, msg->frame)
6983 : ofpraw_pull(&raw, msg));
6988 if (!ofpbuf_size(msg)) {
6990 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
6991 return ofputil_pull_ofp14_port_stats(ps, msg);
6992 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
6993 const struct ofp13_port_stats *ps13;
6995 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
6999 return ofputil_port_stats_from_ofp13(ps, ps13);
7000 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7001 const struct ofp11_port_stats *ps11;
7003 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7007 return ofputil_port_stats_from_ofp11(ps, ps11);
7008 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7009 const struct ofp10_port_stats *ps10;
7011 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7015 return ofputil_port_stats_from_ofp10(ps, ps10);
7021 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7022 "bytes at end", ofpbuf_size(msg));
7023 return OFPERR_OFPBRC_BAD_LEN;
7026 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7027 * port number and stores the latter in '*ofp10_port'.
7028 * Returns 0 if successful, otherwise an OFPERR_* number. */
7030 ofputil_decode_port_stats_request(const struct ofp_header *request,
7031 ofp_port_t *ofp10_port)
7033 switch ((enum ofp_version)request->version) {
7038 case OFP11_VERSION: {
7039 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7040 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7043 case OFP10_VERSION: {
7044 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7045 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7054 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7056 ofputil_bucket_list_destroy(struct list *buckets)
7058 struct ofputil_bucket *bucket, *next_bucket;
7060 LIST_FOR_EACH_SAFE (bucket, next_bucket, list_node, buckets) {
7061 list_remove(&bucket->list_node);
7062 free(bucket->ofpacts);
7067 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7068 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7071 * Group statistics include packet and byte counts for each group. */
7073 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7076 struct ofpbuf *request;
7078 switch (ofp_version) {
7080 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7081 "(\'-O OpenFlow11\')");
7086 case OFP15_VERSION: {
7087 struct ofp11_group_stats_request *req;
7088 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7089 req = ofpbuf_put_zeros(request, sizeof *req);
7090 req->group_id = htonl(group_id);
7100 /* Decodes the OpenFlow group description request in 'oh', returning the group
7101 * whose description is requested, or OFPG_ALL if stats for all groups was
7104 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7106 struct ofpbuf request;
7109 ofpbuf_use_const(&request, oh, ntohs(oh->length));
7110 raw = ofpraw_pull_assert(&request);
7111 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7113 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7114 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7115 return ntohl(*group_id);
7121 /* Returns an OpenFlow group description request for OpenFlow version
7122 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7123 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7126 * Group descriptions include the bucket and action configuration for each
7129 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7132 struct ofpbuf *request;
7135 switch (ofp_version) {
7137 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7138 "(\'-O OpenFlow11\')");
7143 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7147 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7149 gid = htonl(group_id);
7150 ofpbuf_put(request, &gid, sizeof gid);
7160 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7161 struct ofp11_bucket_counter bucket_cnts[])
7165 for (i = 0; i < gs->n_buckets; i++) {
7166 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7167 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7172 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7173 struct ofp11_group_stats *gs11, size_t length,
7174 struct ofp11_bucket_counter bucket_cnts[])
7176 memset(gs11, 0, sizeof *gs11);
7177 gs11->length = htons(length);
7178 gs11->group_id = htonl(gs->group_id);
7179 gs11->ref_count = htonl(gs->ref_count);
7180 gs11->packet_count = htonll(gs->packet_count);
7181 gs11->byte_count = htonll(gs->byte_count);
7182 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7186 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7187 struct ofp13_group_stats *gs13, size_t length,
7188 struct ofp11_bucket_counter bucket_cnts[])
7190 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7191 gs13->duration_sec = htonl(gs->duration_sec);
7192 gs13->duration_nsec = htonl(gs->duration_nsec);
7196 /* Encodes 'gs' properly for the format of the list of group statistics
7197 * replies already begun in 'replies' and appends it to the list. 'replies'
7198 * must have originally been initialized with ofpmp_init(). */
7200 ofputil_append_group_stats(struct list *replies,
7201 const struct ofputil_group_stats *gs)
7203 size_t bucket_counter_size;
7204 struct ofp11_bucket_counter *bucket_counters;
7207 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7209 switch (ofpmp_version(replies)) {
7211 case OFP12_VERSION:{
7212 struct ofp11_group_stats *gs11;
7214 length = sizeof *gs11 + bucket_counter_size;
7215 gs11 = ofpmp_append(replies, length);
7216 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7217 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7223 case OFP15_VERSION: {
7224 struct ofp13_group_stats *gs13;
7226 length = sizeof *gs13 + bucket_counter_size;
7227 gs13 = ofpmp_append(replies, length);
7228 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7229 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7238 /* Returns an OpenFlow group features request for OpenFlow version
7241 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7243 struct ofpbuf *request = NULL;
7245 switch (ofp_version) {
7248 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7249 "(\'-O OpenFlow12\')");
7254 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7264 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7265 * group features request 'request'. */
7267 ofputil_encode_group_features_reply(
7268 const struct ofputil_group_features *features,
7269 const struct ofp_header *request)
7271 struct ofp12_group_features_stats *ogf;
7272 struct ofpbuf *reply;
7275 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7276 request->version, request->xid, 0);
7277 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7278 ogf->types = htonl(features->types);
7279 ogf->capabilities = htonl(features->capabilities);
7280 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7281 ogf->max_groups[i] = htonl(features->max_groups[i]);
7282 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7289 /* Decodes group features reply 'oh' into 'features'. */
7291 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7292 struct ofputil_group_features *features)
7294 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7297 features->types = ntohl(ogf->types);
7298 features->capabilities = ntohl(ogf->capabilities);
7299 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7300 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7301 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7302 ogf->actions[i], oh->version);
7306 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7307 * group ID and stores the latter in '*group_id'.
7308 * Returns 0 if successful, otherwise an OFPERR_* number. */
7310 ofputil_decode_group_stats_request(const struct ofp_header *request,
7313 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7314 *group_id = ntohl(gsr11->group_id);
7318 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7319 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7320 * caller to eventually free.
7322 * Multiple group stats replies can be packed into a single OpenFlow message.
7323 * Calling this function multiple times for a single 'msg' iterates through the
7324 * replies. The caller must initially leave 'msg''s layer pointers null and
7325 * not modify them between calls.
7327 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7328 * otherwise a positive errno value. */
7330 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7331 struct ofputil_group_stats *gs)
7333 struct ofp11_bucket_counter *obc;
7334 struct ofp11_group_stats *ogs11;
7341 gs->bucket_stats = NULL;
7343 ? ofpraw_decode(&raw, msg->frame)
7344 : ofpraw_pull(&raw, msg));
7349 if (!ofpbuf_size(msg)) {
7353 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7354 base_len = sizeof *ogs11;
7355 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7356 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7357 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7358 struct ofp13_group_stats *ogs13;
7360 base_len = sizeof *ogs13;
7361 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7364 gs->duration_sec = ntohl(ogs13->duration_sec);
7365 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7374 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7375 ofpraw_get_name(raw), ofpbuf_size(msg));
7376 return OFPERR_OFPBRC_BAD_LEN;
7378 length = ntohs(ogs11->length);
7379 if (length < sizeof base_len) {
7380 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7381 ofpraw_get_name(raw), length);
7382 return OFPERR_OFPBRC_BAD_LEN;
7385 gs->group_id = ntohl(ogs11->group_id);
7386 gs->ref_count = ntohl(ogs11->ref_count);
7387 gs->packet_count = ntohll(ogs11->packet_count);
7388 gs->byte_count = ntohll(ogs11->byte_count);
7390 gs->n_buckets = (length - base_len) / sizeof *obc;
7391 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7393 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7394 ofpraw_get_name(raw), ofpbuf_size(msg));
7395 return OFPERR_OFPBRC_BAD_LEN;
7398 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7399 for (i = 0; i < gs->n_buckets; i++) {
7400 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7401 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7407 /* Appends a group stats reply that contains the data in 'gds' to those already
7408 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7409 * initialized with ofpmp_init(). */
7411 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7412 struct list *buckets,
7413 struct list *replies)
7415 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7416 enum ofp_version version = ofpmp_version(replies);
7417 struct ofp11_group_desc_stats *ogds;
7418 struct ofputil_bucket *bucket;
7421 start_ogds = ofpbuf_size(reply);
7422 ofpbuf_put_zeros(reply, sizeof *ogds);
7423 LIST_FOR_EACH (bucket, list_node, buckets) {
7424 struct ofp11_bucket *ob;
7427 start_ob = ofpbuf_size(reply);
7428 ofpbuf_put_zeros(reply, sizeof *ob);
7429 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7431 ob = ofpbuf_at_assert(reply, start_ob, sizeof *ob);
7432 ob->len = htons(ofpbuf_size(reply) - start_ob);
7433 ob->weight = htons(bucket->weight);
7434 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7435 ob->watch_group = htonl(bucket->watch_group);
7437 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7438 ogds->length = htons(ofpbuf_size(reply) - start_ogds);
7439 ogds->type = gds->type;
7440 ogds->group_id = htonl(gds->group_id);
7442 ofpmp_postappend(replies, start_ogds);
7446 ofputil_pull_buckets(struct ofpbuf *msg, size_t buckets_length,
7447 enum ofp_version version, struct list *buckets)
7449 struct ofp11_bucket *ob;
7452 while (buckets_length > 0) {
7453 struct ofputil_bucket *bucket;
7454 struct ofpbuf ofpacts;
7458 ob = (buckets_length >= sizeof *ob
7459 ? ofpbuf_try_pull(msg, sizeof *ob)
7462 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
7464 return OFPERR_OFPGMFC_BAD_BUCKET;
7467 ob_len = ntohs(ob->len);
7468 if (ob_len < sizeof *ob) {
7469 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7470 "%"PRIuSIZE" is not valid", ob_len);
7471 return OFPERR_OFPGMFC_BAD_BUCKET;
7472 } else if (ob_len > buckets_length) {
7473 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7474 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
7475 ob_len, buckets_length);
7476 return OFPERR_OFPGMFC_BAD_BUCKET;
7478 buckets_length -= ob_len;
7480 ofpbuf_init(&ofpacts, 0);
7481 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
7484 ofpbuf_uninit(&ofpacts);
7485 ofputil_bucket_list_destroy(buckets);
7489 bucket = xzalloc(sizeof *bucket);
7490 bucket->weight = ntohs(ob->weight);
7491 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
7493 ofpbuf_uninit(&ofpacts);
7494 ofputil_bucket_list_destroy(buckets);
7495 return OFPERR_OFPGMFC_BAD_WATCH;
7497 bucket->watch_group = ntohl(ob->watch_group);
7498 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
7499 bucket->ofpacts_len = ofpbuf_size(&ofpacts);
7500 list_push_back(buckets, &bucket->list_node);
7506 /* Converts a group description reply in 'msg' into an abstract
7507 * ofputil_group_desc in 'gd'.
7509 * Multiple group description replies can be packed into a single OpenFlow
7510 * message. Calling this function multiple times for a single 'msg' iterates
7511 * through the replies. The caller must initially leave 'msg''s layer pointers
7512 * null and not modify them between calls.
7514 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7515 * otherwise a positive errno value. */
7517 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
7518 struct ofpbuf *msg, enum ofp_version version)
7520 struct ofp11_group_desc_stats *ogds;
7524 ofpraw_pull_assert(msg);
7527 if (!ofpbuf_size(msg)) {
7531 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
7533 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
7534 "leftover bytes at end", ofpbuf_size(msg));
7535 return OFPERR_OFPBRC_BAD_LEN;
7537 gd->type = ogds->type;
7538 gd->group_id = ntohl(ogds->group_id);
7540 length = ntohs(ogds->length);
7541 if (length < sizeof *ogds || length - sizeof *ogds > ofpbuf_size(msg)) {
7542 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
7543 "length %"PRIuSIZE, length);
7544 return OFPERR_OFPBRC_BAD_LEN;
7547 return ofputil_pull_buckets(msg, length - sizeof *ogds, version,
7551 /* Converts abstract group mod 'gm' into a message for OpenFlow version
7552 * 'ofp_version' and returns the message. */
7554 ofputil_encode_group_mod(enum ofp_version ofp_version,
7555 const struct ofputil_group_mod *gm)
7558 struct ofp11_group_mod *ogm;
7560 size_t start_bucket;
7561 struct ofputil_bucket *bucket;
7562 struct ofp11_bucket *ob;
7564 switch (ofp_version) {
7565 case OFP10_VERSION: {
7566 if (gm->command == OFPGC11_ADD) {
7567 ovs_fatal(0, "add-group needs OpenFlow 1.1 or later "
7568 "(\'-O OpenFlow11\')");
7569 } else if (gm->command == OFPGC11_MODIFY) {
7570 ovs_fatal(0, "mod-group needs OpenFlow 1.1 or later "
7571 "(\'-O OpenFlow11\')");
7573 ovs_fatal(0, "del-groups needs OpenFlow 1.1 or later "
7574 "(\'-O OpenFlow11\')");
7583 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
7584 start_ogm = ofpbuf_size(b);
7585 ofpbuf_put_zeros(b, sizeof *ogm);
7587 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
7588 start_bucket = ofpbuf_size(b);
7589 ofpbuf_put_zeros(b, sizeof *ob);
7590 if (bucket->ofpacts && bucket->ofpacts_len) {
7591 ofpacts_put_openflow_actions(bucket->ofpacts,
7592 bucket->ofpacts_len, b,
7595 ob = ofpbuf_at_assert(b, start_bucket, sizeof *ob);
7596 ob->len = htons(ofpbuf_size(b) - start_bucket);;
7597 ob->weight = htons(bucket->weight);
7598 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7599 ob->watch_group = htonl(bucket->watch_group);
7601 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
7602 ogm->command = htons(gm->command);
7603 ogm->type = gm->type;
7604 ogm->group_id = htonl(gm->group_id);
7615 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
7616 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
7618 ofputil_decode_group_mod(const struct ofp_header *oh,
7619 struct ofputil_group_mod *gm)
7621 const struct ofp11_group_mod *ogm;
7623 struct ofputil_bucket *bucket;
7626 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
7627 ofpraw_pull_assert(&msg);
7629 ogm = ofpbuf_pull(&msg, sizeof *ogm);
7630 gm->command = ntohs(ogm->command);
7631 gm->type = ogm->type;
7632 gm->group_id = ntohl(ogm->group_id);
7634 err = ofputil_pull_buckets(&msg, ofpbuf_size(&msg), oh->version, &gm->buckets);
7639 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
7642 case OFPGT11_INDIRECT:
7643 if (ofputil_bucket_has_liveness(bucket)) {
7644 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
7647 case OFPGT11_SELECT:
7650 if (!ofputil_bucket_has_liveness(bucket)) {
7651 return OFPERR_OFPGMFC_INVALID_GROUP;
7662 /* Parse a queue status request message into 'oqsr'.
7663 * Returns 0 if successful, otherwise an OFPERR_* number. */
7665 ofputil_decode_queue_stats_request(const struct ofp_header *request,
7666 struct ofputil_queue_stats_request *oqsr)
7668 switch ((enum ofp_version)request->version) {
7673 case OFP11_VERSION: {
7674 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
7675 oqsr->queue_id = ntohl(qsr11->queue_id);
7676 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
7679 case OFP10_VERSION: {
7680 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
7681 oqsr->queue_id = ntohl(qsr10->queue_id);
7682 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
7683 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
7684 if (oqsr->port_no == OFPP_ALL) {
7685 oqsr->port_no = OFPP_ANY;
7695 /* Encode a queue statsrequest for 'oqsr', the encoded message
7696 * will be fore Open Flow version 'ofp_version'. Returns message
7697 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
7699 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
7700 const struct ofputil_queue_stats_request *oqsr)
7702 struct ofpbuf *request;
7704 switch (ofp_version) {
7709 case OFP15_VERSION: {
7710 struct ofp11_queue_stats_request *req;
7711 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
7712 req = ofpbuf_put_zeros(request, sizeof *req);
7713 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
7714 req->queue_id = htonl(oqsr->queue_id);
7717 case OFP10_VERSION: {
7718 struct ofp10_queue_stats_request *req;
7719 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
7720 req = ofpbuf_put_zeros(request, sizeof *req);
7721 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
7722 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
7723 ? OFPP_ALL : oqsr->port_no));
7724 req->queue_id = htonl(oqsr->queue_id);
7734 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
7737 ofputil_count_queue_stats(const struct ofp_header *oh)
7739 struct ofputil_queue_stats qs;
7743 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7744 ofpraw_pull_assert(&b);
7745 while (!ofputil_decode_queue_stats(&qs, &b)) {
7752 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
7753 const struct ofp10_queue_stats *qs10)
7755 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
7756 oqs->queue_id = ntohl(qs10->queue_id);
7757 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
7758 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
7759 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
7760 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
7766 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
7767 const struct ofp11_queue_stats *qs11)
7771 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
7776 oqs->queue_id = ntohl(qs11->queue_id);
7777 oqs->tx_bytes = ntohll(qs11->tx_bytes);
7778 oqs->tx_packets = ntohll(qs11->tx_packets);
7779 oqs->tx_errors = ntohll(qs11->tx_errors);
7780 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
7786 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
7787 const struct ofp13_queue_stats *qs13)
7789 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
7791 oqs->duration_sec = ntohl(qs13->duration_sec);
7792 oqs->duration_nsec = ntohl(qs13->duration_nsec);
7799 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
7802 const struct ofp14_queue_stats *qs14;
7805 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
7807 return OFPERR_OFPBRC_BAD_LEN;
7810 len = ntohs(qs14->length);
7811 if (len < sizeof *qs14 || len - sizeof *qs14 > ofpbuf_size(msg)) {
7812 return OFPERR_OFPBRC_BAD_LEN;
7814 ofpbuf_pull(msg, len - sizeof *qs14);
7816 /* No properties yet defined, so ignore them for now. */
7818 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
7821 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
7822 * ofputil_queue_stats in 'qs'.
7824 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
7825 * message. Calling this function multiple times for a single 'msg' iterates
7826 * through the replies. The caller must initially leave 'msg''s layer pointers
7827 * null and not modify them between calls.
7829 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7830 * otherwise a positive errno value. */
7832 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
7838 ? ofpraw_decode(&raw, msg->frame)
7839 : ofpraw_pull(&raw, msg));
7844 if (!ofpbuf_size(msg)) {
7846 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
7847 return ofputil_pull_ofp14_queue_stats(qs, msg);
7848 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
7849 const struct ofp13_queue_stats *qs13;
7851 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
7855 return ofputil_queue_stats_from_ofp13(qs, qs13);
7856 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
7857 const struct ofp11_queue_stats *qs11;
7859 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
7863 return ofputil_queue_stats_from_ofp11(qs, qs11);
7864 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
7865 const struct ofp10_queue_stats *qs10;
7867 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
7871 return ofputil_queue_stats_from_ofp10(qs, qs10);
7877 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
7878 "bytes at end", ofpbuf_size(msg));
7879 return OFPERR_OFPBRC_BAD_LEN;
7883 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
7884 struct ofp10_queue_stats *qs10)
7886 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
7887 memset(qs10->pad, 0, sizeof qs10->pad);
7888 qs10->queue_id = htonl(oqs->queue_id);
7889 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
7890 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
7891 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
7895 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
7896 struct ofp11_queue_stats *qs11)
7898 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
7899 qs11->queue_id = htonl(oqs->queue_id);
7900 qs11->tx_bytes = htonll(oqs->tx_bytes);
7901 qs11->tx_packets = htonll(oqs->tx_packets);
7902 qs11->tx_errors = htonll(oqs->tx_errors);
7906 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
7907 struct ofp13_queue_stats *qs13)
7909 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
7910 if (oqs->duration_sec != UINT32_MAX) {
7911 qs13->duration_sec = htonl(oqs->duration_sec);
7912 qs13->duration_nsec = htonl(oqs->duration_nsec);
7914 qs13->duration_sec = OVS_BE32_MAX;
7915 qs13->duration_nsec = OVS_BE32_MAX;
7920 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
7921 struct ofp14_queue_stats *qs14)
7923 qs14->length = htons(sizeof *qs14);
7924 memset(qs14->pad, 0, sizeof qs14->pad);
7925 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
7929 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
7931 ofputil_append_queue_stat(struct list *replies,
7932 const struct ofputil_queue_stats *oqs)
7934 switch (ofpmp_version(replies)) {
7935 case OFP13_VERSION: {
7936 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7937 ofputil_queue_stats_to_ofp13(oqs, reply);
7942 case OFP11_VERSION: {
7943 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7944 ofputil_queue_stats_to_ofp11(oqs, reply);
7948 case OFP10_VERSION: {
7949 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7950 ofputil_queue_stats_to_ofp10(oqs, reply);
7955 case OFP15_VERSION: {
7956 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7957 ofputil_queue_stats_to_ofp14(oqs, reply);
7967 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
7968 struct ofputil_bundle_ctrl_msg *msg)
7972 const struct ofp14_bundle_ctrl_msg *m;
7974 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7975 raw = ofpraw_pull_assert(&b);
7976 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
7979 msg->bundle_id = ntohl(m->bundle_id);
7980 msg->type = ntohs(m->type);
7981 msg->flags = ntohs(m->flags);
7987 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
7988 struct ofputil_bundle_ctrl_msg *msg)
7991 struct ofp14_bundle_ctrl_msg *m;
7993 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
7994 m = ofpbuf_put_zeros(buf, sizeof *m);
7996 m->bundle_id = htonl(msg->bundle_id);
7997 m->type = htons(msg->type);
7998 m->flags = htons(msg->flags);
8004 ofputil_decode_bundle_add(const struct ofp_header *oh,
8005 struct ofputil_bundle_add_msg *msg)
8007 const struct ofp14_bundle_ctrl_msg *m;
8012 ofpbuf_use_const(&b, oh, ntohs(oh->length));
8013 raw = ofpraw_pull_assert(&b);
8014 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
8016 m = ofpbuf_pull(&b, sizeof *m);
8017 msg->bundle_id = ntohl(m->bundle_id);
8018 msg->flags = ntohs(m->flags);
8020 msg->msg = ofpbuf_data(&b);
8021 inner_len = ntohs(msg->msg->length);
8022 if (inner_len < sizeof(struct ofp_header) || inner_len > ofpbuf_size(&b)) {
8023 return OFPERR_OFPBFC_MSG_BAD_LEN;
8030 ofputil_encode_bundle_add(enum ofp_version ofp_version,
8031 struct ofputil_bundle_add_msg *msg)
8033 struct ofpbuf *request;
8034 struct ofp14_bundle_ctrl_msg *m;
8036 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version, 0);
8037 m = ofpbuf_put_zeros(request, sizeof *m);
8039 m->bundle_id = htonl(msg->bundle_id);
8040 m->flags = htons(msg->flags);
8041 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));