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 ofputil_pull_property(struct ofpbuf *msg, struct ofpbuf *property,
69 struct ofp_prop_header *oph;
72 if (ofpbuf_size(msg) < sizeof *oph) {
73 return OFPERR_OFPBPC_BAD_LEN;
76 oph = ofpbuf_data(msg);
77 len = ntohs(oph->len);
78 if (len < sizeof *oph || ROUND_UP(len, 8) > ofpbuf_size(msg)) {
79 return OFPERR_OFPBPC_BAD_LEN;
82 *typep = ntohs(oph->type);
84 ofpbuf_use_const(property, ofpbuf_data(msg), len);
86 ofpbuf_pull(msg, ROUND_UP(len, 8));
90 static void PRINTF_FORMAT(2, 3)
91 log_property(bool loose, const char *message, ...)
93 enum vlog_level level = loose ? VLL_DBG : VLL_WARN;
94 if (!vlog_should_drop(THIS_MODULE, level, &bad_ofmsg_rl)) {
97 va_start(args, message);
98 vlog_valist(THIS_MODULE, level, message, args);
103 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
104 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
107 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
108 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
109 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
110 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
113 ofputil_wcbits_to_netmask(int wcbits)
116 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
119 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
120 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
121 * between 0 and 32 inclusive.
123 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
124 * still be in the valid range but isn't otherwise meaningful. */
126 ofputil_netmask_to_wcbits(ovs_be32 netmask)
128 return 32 - ip_count_cidr_bits(netmask);
131 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
132 * flow_wildcards in 'wc' for use in struct match. It is the caller's
133 * responsibility to handle the special case where the flow match's dl_vlan is
134 * set to OFP_VLAN_NONE. */
136 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
138 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 27);
140 /* Initialize most of wc. */
141 flow_wildcards_init_catchall(wc);
143 if (!(ofpfw & OFPFW10_IN_PORT)) {
144 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
147 if (!(ofpfw & OFPFW10_NW_TOS)) {
148 wc->masks.nw_tos |= IP_DSCP_MASK;
151 if (!(ofpfw & OFPFW10_NW_PROTO)) {
152 wc->masks.nw_proto = UINT8_MAX;
154 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
155 >> OFPFW10_NW_SRC_SHIFT);
156 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
157 >> OFPFW10_NW_DST_SHIFT);
159 if (!(ofpfw & OFPFW10_TP_SRC)) {
160 wc->masks.tp_src = OVS_BE16_MAX;
162 if (!(ofpfw & OFPFW10_TP_DST)) {
163 wc->masks.tp_dst = OVS_BE16_MAX;
166 if (!(ofpfw & OFPFW10_DL_SRC)) {
167 memset(wc->masks.dl_src, 0xff, ETH_ADDR_LEN);
169 if (!(ofpfw & OFPFW10_DL_DST)) {
170 memset(wc->masks.dl_dst, 0xff, ETH_ADDR_LEN);
172 if (!(ofpfw & OFPFW10_DL_TYPE)) {
173 wc->masks.dl_type = OVS_BE16_MAX;
177 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
178 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
180 if (!(ofpfw & OFPFW10_DL_VLAN)) {
181 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
185 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
187 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
190 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
192 /* Initialize match->wc. */
193 memset(&match->flow, 0, sizeof match->flow);
194 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
196 /* Initialize most of match->flow. */
197 match->flow.nw_src = ofmatch->nw_src;
198 match->flow.nw_dst = ofmatch->nw_dst;
199 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
200 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
201 match->flow.tp_src = ofmatch->tp_src;
202 match->flow.tp_dst = ofmatch->tp_dst;
203 memcpy(match->flow.dl_src, ofmatch->dl_src, ETH_ADDR_LEN);
204 memcpy(match->flow.dl_dst, ofmatch->dl_dst, ETH_ADDR_LEN);
205 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
206 match->flow.nw_proto = ofmatch->nw_proto;
208 /* Translate VLANs. */
209 if (!(ofpfw & OFPFW10_DL_VLAN) &&
210 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
211 /* Match only packets without 802.1Q header.
213 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
215 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
216 * because we can't have a specific PCP without an 802.1Q header.
217 * However, older versions of OVS treated this as matching packets
218 * withut an 802.1Q header, so we do here too. */
219 match->flow.vlan_tci = htons(0);
220 match->wc.masks.vlan_tci = htons(0xffff);
222 ovs_be16 vid, pcp, tci;
225 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
226 hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
228 tci = vid | pcp | htons(VLAN_CFI);
229 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
233 match_zero_wildcarded_fields(match);
236 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
238 ofputil_match_to_ofp10_match(const struct match *match,
239 struct ofp10_match *ofmatch)
241 const struct flow_wildcards *wc = &match->wc;
244 /* Figure out most OpenFlow wildcards. */
246 if (!wc->masks.in_port.ofp_port) {
247 ofpfw |= OFPFW10_IN_PORT;
249 if (!wc->masks.dl_type) {
250 ofpfw |= OFPFW10_DL_TYPE;
252 if (!wc->masks.nw_proto) {
253 ofpfw |= OFPFW10_NW_PROTO;
255 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
256 << OFPFW10_NW_SRC_SHIFT);
257 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
258 << OFPFW10_NW_DST_SHIFT);
259 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
260 ofpfw |= OFPFW10_NW_TOS;
262 if (!wc->masks.tp_src) {
263 ofpfw |= OFPFW10_TP_SRC;
265 if (!wc->masks.tp_dst) {
266 ofpfw |= OFPFW10_TP_DST;
268 if (eth_addr_is_zero(wc->masks.dl_src)) {
269 ofpfw |= OFPFW10_DL_SRC;
271 if (eth_addr_is_zero(wc->masks.dl_dst)) {
272 ofpfw |= OFPFW10_DL_DST;
275 /* Translate VLANs. */
276 ofmatch->dl_vlan = htons(0);
277 ofmatch->dl_vlan_pcp = 0;
278 if (match->wc.masks.vlan_tci == htons(0)) {
279 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
280 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
281 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
282 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
283 ofpfw |= OFPFW10_DL_VLAN_PCP;
285 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
286 ofpfw |= OFPFW10_DL_VLAN;
288 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
291 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
292 ofpfw |= OFPFW10_DL_VLAN_PCP;
294 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
298 /* Compose most of the match structure. */
299 ofmatch->wildcards = htonl(ofpfw);
300 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
301 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
302 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
303 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
304 ofmatch->nw_src = match->flow.nw_src;
305 ofmatch->nw_dst = match->flow.nw_dst;
306 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
307 ofmatch->nw_proto = match->flow.nw_proto;
308 ofmatch->tp_src = match->flow.tp_src;
309 ofmatch->tp_dst = match->flow.tp_dst;
310 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
311 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
315 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
316 uint16_t *padded_match_len)
318 struct ofp11_match_header *omh = ofpbuf_data(buf);
321 if (ofpbuf_size(buf) < sizeof *omh) {
322 return OFPERR_OFPBMC_BAD_LEN;
325 match_len = ntohs(omh->length);
327 switch (ntohs(omh->type)) {
328 case OFPMT_STANDARD: {
329 struct ofp11_match *om;
331 if (match_len != sizeof *om || ofpbuf_size(buf) < sizeof *om) {
332 return OFPERR_OFPBMC_BAD_LEN;
334 om = ofpbuf_pull(buf, sizeof *om);
335 if (padded_match_len) {
336 *padded_match_len = match_len;
338 return ofputil_match_from_ofp11_match(om, match);
342 if (padded_match_len) {
343 *padded_match_len = ROUND_UP(match_len, 8);
345 return oxm_pull_match(buf, match);
348 return OFPERR_OFPBMC_BAD_TYPE;
352 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
353 * Returns 0 if successful, otherwise an OFPERR_* value. */
355 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
358 uint16_t wc = ntohl(ofmatch->wildcards);
359 uint8_t dl_src_mask[ETH_ADDR_LEN];
360 uint8_t dl_dst_mask[ETH_ADDR_LEN];
361 bool ipv4, arp, rarp;
364 match_init_catchall(match);
366 if (!(wc & OFPFW11_IN_PORT)) {
370 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
372 return OFPERR_OFPBMC_BAD_VALUE;
374 match_set_in_port(match, ofp_port);
377 for (i = 0; i < ETH_ADDR_LEN; i++) {
378 dl_src_mask[i] = ~ofmatch->dl_src_mask[i];
380 match_set_dl_src_masked(match, ofmatch->dl_src, dl_src_mask);
382 for (i = 0; i < ETH_ADDR_LEN; i++) {
383 dl_dst_mask[i] = ~ofmatch->dl_dst_mask[i];
385 match_set_dl_dst_masked(match, ofmatch->dl_dst, dl_dst_mask);
387 if (!(wc & OFPFW11_DL_VLAN)) {
388 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
389 /* Match only packets without a VLAN tag. */
390 match->flow.vlan_tci = htons(0);
391 match->wc.masks.vlan_tci = OVS_BE16_MAX;
393 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
394 /* Match any packet with a VLAN tag regardless of VID. */
395 match->flow.vlan_tci = htons(VLAN_CFI);
396 match->wc.masks.vlan_tci = htons(VLAN_CFI);
397 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
398 /* Match only packets with the specified VLAN VID. */
399 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
400 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
403 return OFPERR_OFPBMC_BAD_VALUE;
406 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
407 if (ofmatch->dl_vlan_pcp <= 7) {
408 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
410 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
413 return OFPERR_OFPBMC_BAD_VALUE;
419 if (!(wc & OFPFW11_DL_TYPE)) {
420 match_set_dl_type(match,
421 ofputil_dl_type_from_openflow(ofmatch->dl_type));
424 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
425 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
426 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
428 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
429 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
431 return OFPERR_OFPBMC_BAD_VALUE;
434 match_set_nw_dscp(match, ofmatch->nw_tos);
437 if (ipv4 || arp || rarp) {
438 if (!(wc & OFPFW11_NW_PROTO)) {
439 match_set_nw_proto(match, ofmatch->nw_proto);
441 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
442 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
445 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
446 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
447 switch (match->flow.nw_proto) {
449 /* "A.2.3 Flow Match Structures" in OF1.1 says:
451 * The tp_src and tp_dst fields will be ignored unless the
452 * network protocol specified is as TCP, UDP or SCTP.
454 * but I'm pretty sure we should support ICMP too, otherwise
455 * that's a regression from OF1.0. */
456 if (!(wc & OFPFW11_TP_SRC)) {
457 uint16_t icmp_type = ntohs(ofmatch->tp_src);
458 if (icmp_type < 0x100) {
459 match_set_icmp_type(match, icmp_type);
461 return OFPERR_OFPBMC_BAD_FIELD;
464 if (!(wc & OFPFW11_TP_DST)) {
465 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
466 if (icmp_code < 0x100) {
467 match_set_icmp_code(match, icmp_code);
469 return OFPERR_OFPBMC_BAD_FIELD;
477 if (!(wc & (OFPFW11_TP_SRC))) {
478 match_set_tp_src(match, ofmatch->tp_src);
480 if (!(wc & (OFPFW11_TP_DST))) {
481 match_set_tp_dst(match, ofmatch->tp_dst);
486 /* OF1.1 says explicitly to ignore this. */
491 if (eth_type_mpls(match->flow.dl_type)) {
492 if (!(wc & OFPFW11_MPLS_LABEL)) {
493 match_set_mpls_label(match, 0, ofmatch->mpls_label);
495 if (!(wc & OFPFW11_MPLS_TC)) {
496 match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
500 match_set_metadata_masked(match, ofmatch->metadata,
501 ~ofmatch->metadata_mask);
506 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
508 ofputil_match_to_ofp11_match(const struct match *match,
509 struct ofp11_match *ofmatch)
514 memset(ofmatch, 0, sizeof *ofmatch);
515 ofmatch->omh.type = htons(OFPMT_STANDARD);
516 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
518 if (!match->wc.masks.in_port.ofp_port) {
519 wc |= OFPFW11_IN_PORT;
521 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
524 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
525 for (i = 0; i < ETH_ADDR_LEN; i++) {
526 ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i];
529 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
530 for (i = 0; i < ETH_ADDR_LEN; i++) {
531 ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i];
534 if (match->wc.masks.vlan_tci == htons(0)) {
535 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
536 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
537 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
538 ofmatch->dl_vlan = htons(OFPVID11_NONE);
539 wc |= OFPFW11_DL_VLAN_PCP;
541 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
542 ofmatch->dl_vlan = htons(OFPVID11_ANY);
544 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
547 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
548 wc |= OFPFW11_DL_VLAN_PCP;
550 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
554 if (!match->wc.masks.dl_type) {
555 wc |= OFPFW11_DL_TYPE;
557 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
560 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
561 wc |= OFPFW11_NW_TOS;
563 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
566 if (!match->wc.masks.nw_proto) {
567 wc |= OFPFW11_NW_PROTO;
569 ofmatch->nw_proto = match->flow.nw_proto;
572 ofmatch->nw_src = match->flow.nw_src;
573 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
574 ofmatch->nw_dst = match->flow.nw_dst;
575 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
577 if (!match->wc.masks.tp_src) {
578 wc |= OFPFW11_TP_SRC;
580 ofmatch->tp_src = match->flow.tp_src;
583 if (!match->wc.masks.tp_dst) {
584 wc |= OFPFW11_TP_DST;
586 ofmatch->tp_dst = match->flow.tp_dst;
589 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
590 wc |= OFPFW11_MPLS_LABEL;
592 ofmatch->mpls_label = htonl(mpls_lse_to_label(
593 match->flow.mpls_lse[0]));
596 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
597 wc |= OFPFW11_MPLS_TC;
599 ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
602 ofmatch->metadata = match->flow.metadata;
603 ofmatch->metadata_mask = ~match->wc.masks.metadata;
605 ofmatch->wildcards = htonl(wc);
608 /* Returns the "typical" length of a match for 'protocol', for use in
609 * estimating space to preallocate. */
611 ofputil_match_typical_len(enum ofputil_protocol protocol)
614 case OFPUTIL_P_OF10_STD:
615 case OFPUTIL_P_OF10_STD_TID:
616 return sizeof(struct ofp10_match);
618 case OFPUTIL_P_OF10_NXM:
619 case OFPUTIL_P_OF10_NXM_TID:
620 return NXM_TYPICAL_LEN;
622 case OFPUTIL_P_OF11_STD:
623 return sizeof(struct ofp11_match);
625 case OFPUTIL_P_OF12_OXM:
626 case OFPUTIL_P_OF13_OXM:
627 case OFPUTIL_P_OF14_OXM:
628 case OFPUTIL_P_OF15_OXM:
629 return NXM_TYPICAL_LEN;
636 /* Appends to 'b' an struct ofp11_match_header followed by a match that
637 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
638 * data appended out to a multiple of 8. 'protocol' must be one that is usable
639 * in OpenFlow 1.1 or later.
641 * This function can cause 'b''s data to be reallocated.
643 * Returns the number of bytes appended to 'b', excluding the padding. Never
646 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
647 enum ofputil_protocol protocol)
650 case OFPUTIL_P_OF10_STD:
651 case OFPUTIL_P_OF10_STD_TID:
652 case OFPUTIL_P_OF10_NXM:
653 case OFPUTIL_P_OF10_NXM_TID:
656 case OFPUTIL_P_OF11_STD: {
657 struct ofp11_match *om;
659 /* Make sure that no padding is needed. */
660 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
662 om = ofpbuf_put_uninit(b, sizeof *om);
663 ofputil_match_to_ofp11_match(match, om);
667 case OFPUTIL_P_OF12_OXM:
668 case OFPUTIL_P_OF13_OXM:
669 case OFPUTIL_P_OF14_OXM:
670 case OFPUTIL_P_OF15_OXM:
671 return oxm_put_match(b, match,
672 ofputil_protocol_to_ofp_version(protocol));
678 /* Given a 'dl_type' value in the format used in struct flow, returns the
679 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
682 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
684 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
685 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
689 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
690 * structure, returns the corresponding 'dl_type' value for use in struct
693 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
695 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
696 ? htons(FLOW_DL_TYPE_NONE)
702 struct proto_abbrev {
703 enum ofputil_protocol protocol;
707 /* Most users really don't care about some of the differences between
708 * protocols. These abbreviations help with that. */
709 static const struct proto_abbrev proto_abbrevs[] = {
710 { OFPUTIL_P_ANY, "any" },
711 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
712 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
713 { OFPUTIL_P_ANY_OXM, "OXM" },
715 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
717 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
726 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
728 /* Returns the set of ofputil_protocols that are supported with the given
729 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
730 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
731 * if 'version' is not supported or outside the valid range. */
732 enum ofputil_protocol
733 ofputil_protocols_from_ofp_version(enum ofp_version version)
737 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
739 return OFPUTIL_P_OF11_STD;
741 return OFPUTIL_P_OF12_OXM;
743 return OFPUTIL_P_OF13_OXM;
745 return OFPUTIL_P_OF14_OXM;
747 return OFPUTIL_P_OF15_OXM;
753 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
754 * connection that has negotiated the given 'version'. 'version' should
755 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
756 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
757 * outside the valid range. */
758 enum ofputil_protocol
759 ofputil_protocol_from_ofp_version(enum ofp_version version)
761 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
764 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
765 * etc.) that corresponds to 'protocol'. */
767 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
770 case OFPUTIL_P_OF10_STD:
771 case OFPUTIL_P_OF10_STD_TID:
772 case OFPUTIL_P_OF10_NXM:
773 case OFPUTIL_P_OF10_NXM_TID:
774 return OFP10_VERSION;
775 case OFPUTIL_P_OF11_STD:
776 return OFP11_VERSION;
777 case OFPUTIL_P_OF12_OXM:
778 return OFP12_VERSION;
779 case OFPUTIL_P_OF13_OXM:
780 return OFP13_VERSION;
781 case OFPUTIL_P_OF14_OXM:
782 return OFP14_VERSION;
783 case OFPUTIL_P_OF15_OXM:
784 return OFP15_VERSION;
790 /* Returns a bitmap of OpenFlow versions that are supported by at
791 * least one of the 'protocols'. */
793 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
797 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
798 enum ofputil_protocol protocol = rightmost_1bit(protocols);
800 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
806 /* Returns the set of protocols that are supported on top of the
807 * OpenFlow versions included in 'bitmap'. */
808 enum ofputil_protocol
809 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
811 enum ofputil_protocol protocols = 0;
813 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
814 enum ofp_version version = rightmost_1bit_idx(bitmap);
816 protocols |= ofputil_protocols_from_ofp_version(version);
822 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
825 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
827 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
830 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
831 * extension turned on or off if 'enable' is true or false, respectively.
833 * This extension is only useful for protocols whose "standard" version does
834 * not allow specific tables to be modified. In particular, this is true of
835 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
836 * specifies a table ID and so there is no need for such an extension. When
837 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
838 * extension, this function just returns its 'protocol' argument unchanged
839 * regardless of the value of 'enable'. */
840 enum ofputil_protocol
841 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
844 case OFPUTIL_P_OF10_STD:
845 case OFPUTIL_P_OF10_STD_TID:
846 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
848 case OFPUTIL_P_OF10_NXM:
849 case OFPUTIL_P_OF10_NXM_TID:
850 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
852 case OFPUTIL_P_OF11_STD:
853 return OFPUTIL_P_OF11_STD;
855 case OFPUTIL_P_OF12_OXM:
856 return OFPUTIL_P_OF12_OXM;
858 case OFPUTIL_P_OF13_OXM:
859 return OFPUTIL_P_OF13_OXM;
861 case OFPUTIL_P_OF14_OXM:
862 return OFPUTIL_P_OF14_OXM;
864 case OFPUTIL_P_OF15_OXM:
865 return OFPUTIL_P_OF15_OXM;
872 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
873 * some extension to a standard protocol version, the return value is the
874 * standard version of that protocol without any extension. If 'protocol' is a
875 * standard protocol version, returns 'protocol' unchanged. */
876 enum ofputil_protocol
877 ofputil_protocol_to_base(enum ofputil_protocol protocol)
879 return ofputil_protocol_set_tid(protocol, false);
882 /* Returns 'new_base' with any extensions taken from 'cur'. */
883 enum ofputil_protocol
884 ofputil_protocol_set_base(enum ofputil_protocol cur,
885 enum ofputil_protocol new_base)
887 bool tid = (cur & OFPUTIL_P_TID) != 0;
890 case OFPUTIL_P_OF10_STD:
891 case OFPUTIL_P_OF10_STD_TID:
892 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
894 case OFPUTIL_P_OF10_NXM:
895 case OFPUTIL_P_OF10_NXM_TID:
896 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
898 case OFPUTIL_P_OF11_STD:
899 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
901 case OFPUTIL_P_OF12_OXM:
902 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
904 case OFPUTIL_P_OF13_OXM:
905 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
907 case OFPUTIL_P_OF14_OXM:
908 return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
910 case OFPUTIL_P_OF15_OXM:
911 return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
918 /* Returns a string form of 'protocol', if a simple form exists (that is, if
919 * 'protocol' is either a single protocol or it is a combination of protocols
920 * that have a single abbreviation). Otherwise, returns NULL. */
922 ofputil_protocol_to_string(enum ofputil_protocol protocol)
924 const struct proto_abbrev *p;
926 /* Use a "switch" statement for single-bit names so that we get a compiler
927 * warning if we forget any. */
929 case OFPUTIL_P_OF10_NXM:
930 return "NXM-table_id";
932 case OFPUTIL_P_OF10_NXM_TID:
933 return "NXM+table_id";
935 case OFPUTIL_P_OF10_STD:
936 return "OpenFlow10-table_id";
938 case OFPUTIL_P_OF10_STD_TID:
939 return "OpenFlow10+table_id";
941 case OFPUTIL_P_OF11_STD:
944 case OFPUTIL_P_OF12_OXM:
945 return "OXM-OpenFlow12";
947 case OFPUTIL_P_OF13_OXM:
948 return "OXM-OpenFlow13";
950 case OFPUTIL_P_OF14_OXM:
951 return "OXM-OpenFlow14";
953 case OFPUTIL_P_OF15_OXM:
954 return "OXM-OpenFlow15";
957 /* Check abbreviations. */
958 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
959 if (protocol == p->protocol) {
967 /* Returns a string that represents 'protocols'. The return value might be a
968 * comma-separated list if 'protocols' doesn't have a simple name. The return
969 * value is "none" if 'protocols' is 0.
971 * The caller must free the returned string (with free()). */
973 ofputil_protocols_to_string(enum ofputil_protocol protocols)
977 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
978 if (protocols == 0) {
979 return xstrdup("none");
984 const struct proto_abbrev *p;
988 ds_put_char(&s, ',');
991 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
992 if ((protocols & p->protocol) == p->protocol) {
993 ds_put_cstr(&s, p->name);
994 protocols &= ~p->protocol;
999 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1000 enum ofputil_protocol bit = 1u << i;
1002 if (protocols & bit) {
1003 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
1012 return ds_steal_cstr(&s);
1015 static enum ofputil_protocol
1016 ofputil_protocol_from_string__(const char *s, size_t n)
1018 const struct proto_abbrev *p;
1021 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
1022 enum ofputil_protocol bit = 1u << i;
1023 const char *name = ofputil_protocol_to_string(bit);
1025 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
1030 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
1031 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
1039 /* Returns the nonempty set of protocols represented by 's', which can be a
1040 * single protocol name or abbreviation or a comma-separated list of them.
1042 * Aborts the program with an error message if 's' is invalid. */
1043 enum ofputil_protocol
1044 ofputil_protocols_from_string(const char *s)
1046 const char *orig_s = s;
1047 enum ofputil_protocol protocols;
1051 enum ofputil_protocol p;
1054 n = strcspn(s, ",");
1060 p = ofputil_protocol_from_string__(s, n);
1062 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
1070 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
1076 ofputil_version_from_string(const char *s)
1078 if (!strcasecmp(s, "OpenFlow10")) {
1079 return OFP10_VERSION;
1081 if (!strcasecmp(s, "OpenFlow11")) {
1082 return OFP11_VERSION;
1084 if (!strcasecmp(s, "OpenFlow12")) {
1085 return OFP12_VERSION;
1087 if (!strcasecmp(s, "OpenFlow13")) {
1088 return OFP13_VERSION;
1090 if (!strcasecmp(s, "OpenFlow14")) {
1091 return OFP14_VERSION;
1093 if (!strcasecmp(s, "OpenFlow15")) {
1094 return OFP15_VERSION;
1100 is_delimiter(unsigned char c)
1102 return isspace(c) || c == ',';
1106 ofputil_versions_from_string(const char *s)
1109 uint32_t bitmap = 0;
1116 if (is_delimiter(s[i])) {
1121 while (s[i + j] && !is_delimiter(s[i + j])) {
1124 key = xmemdup0(s + i, j);
1125 version = ofputil_version_from_string(key);
1127 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1130 bitmap |= 1u << version;
1138 ofputil_versions_from_strings(char ** const s, size_t count)
1140 uint32_t bitmap = 0;
1143 int version = ofputil_version_from_string(s[count]);
1145 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1147 bitmap |= 1u << version;
1155 ofputil_version_to_string(enum ofp_version ofp_version)
1157 switch (ofp_version) {
1159 return "OpenFlow10";
1161 return "OpenFlow11";
1163 return "OpenFlow12";
1165 return "OpenFlow13";
1167 return "OpenFlow14";
1169 return "OpenFlow15";
1176 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1178 switch (packet_in_format) {
1179 case NXPIF_OPENFLOW10:
1188 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1190 switch (packet_in_format) {
1191 case NXPIF_OPENFLOW10:
1192 return "openflow10";
1201 ofputil_packet_in_format_from_string(const char *s)
1203 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1204 : !strcmp(s, "nxm") ? NXPIF_NXM
1209 ofputil_format_version(struct ds *msg, enum ofp_version version)
1211 ds_put_format(msg, "0x%02x", version);
1215 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1217 ds_put_cstr(msg, ofputil_version_to_string(version));
1221 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1222 void (*format_version)(struct ds *msg,
1226 format_version(msg, raw_ctz(bitmap));
1227 bitmap = zero_rightmost_1bit(bitmap);
1229 ds_put_cstr(msg, ", ");
1235 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1237 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1241 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1243 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1247 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1248 uint32_t *allowed_versionsp)
1250 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1251 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1252 uint32_t allowed_versions;
1254 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1258 /* Only use the first 32-bit element of the bitmap as that is all the
1259 * current implementation supports. Subsequent elements are ignored which
1260 * should have no effect on session negotiation until Open vSwtich supports
1261 * wire-protocol versions greater than 31.
1263 allowed_versions = ntohl(bitmap[0]);
1265 if (allowed_versions & 1) {
1266 /* There's no OpenFlow version 0. */
1267 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1269 allowed_versions &= ~1u;
1272 if (!allowed_versions) {
1273 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1274 "version (between 0x01 and 0x1f)");
1278 *allowed_versionsp = allowed_versions;
1283 version_bitmap_from_version(uint8_t ofp_version)
1285 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1288 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1289 * the set of OpenFlow versions for which 'oh' announces support.
1291 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1292 * successful, and thus '*allowed_versions' is always initialized. However, it
1293 * returns false if 'oh' contains some data that could not be fully understood,
1294 * true if 'oh' was completely parsed. */
1296 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1301 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1302 ofpbuf_pull(&msg, sizeof *oh);
1304 *allowed_versions = version_bitmap_from_version(oh->version);
1305 while (ofpbuf_size(&msg)) {
1306 const struct ofp_hello_elem_header *oheh;
1309 if (ofpbuf_size(&msg) < sizeof *oheh) {
1313 oheh = ofpbuf_data(&msg);
1314 len = ntohs(oheh->length);
1315 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1319 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1320 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1328 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1329 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1331 should_send_version_bitmap(uint32_t allowed_versions)
1333 return !is_pow2((allowed_versions >> 1) + 1);
1336 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1337 * versions in the 'allowed_versions' bitmaps and returns the message. */
1339 ofputil_encode_hello(uint32_t allowed_versions)
1341 enum ofp_version ofp_version;
1344 ofp_version = leftmost_1bit_idx(allowed_versions);
1345 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1347 if (should_send_version_bitmap(allowed_versions)) {
1348 struct ofp_hello_elem_header *oheh;
1351 map_len = sizeof allowed_versions;
1352 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1353 oheh->type = htons(OFPHET_VERSIONBITMAP);
1354 oheh->length = htons(map_len + sizeof *oheh);
1355 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1357 ofpmsg_update_length(msg);
1363 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1364 * protocol is 'current', at least partly transitions the protocol to 'want'.
1365 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1366 * connection if the switch processes the returned message correctly. (If
1367 * '*next != want' then the caller will have to iterate.)
1369 * If 'current == want', or if it is not possible to transition from 'current'
1370 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1371 * protocol versions), returns NULL and stores 'current' in '*next'. */
1373 ofputil_encode_set_protocol(enum ofputil_protocol current,
1374 enum ofputil_protocol want,
1375 enum ofputil_protocol *next)
1377 enum ofp_version cur_version, want_version;
1378 enum ofputil_protocol cur_base, want_base;
1379 bool cur_tid, want_tid;
1381 cur_version = ofputil_protocol_to_ofp_version(current);
1382 want_version = ofputil_protocol_to_ofp_version(want);
1383 if (cur_version != want_version) {
1388 cur_base = ofputil_protocol_to_base(current);
1389 want_base = ofputil_protocol_to_base(want);
1390 if (cur_base != want_base) {
1391 *next = ofputil_protocol_set_base(current, want_base);
1393 switch (want_base) {
1394 case OFPUTIL_P_OF10_NXM:
1395 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1397 case OFPUTIL_P_OF10_STD:
1398 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1400 case OFPUTIL_P_OF11_STD:
1401 case OFPUTIL_P_OF12_OXM:
1402 case OFPUTIL_P_OF13_OXM:
1403 case OFPUTIL_P_OF14_OXM:
1404 case OFPUTIL_P_OF15_OXM:
1405 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1406 * verified above that we're not trying to change versions. */
1409 case OFPUTIL_P_OF10_STD_TID:
1410 case OFPUTIL_P_OF10_NXM_TID:
1415 cur_tid = (current & OFPUTIL_P_TID) != 0;
1416 want_tid = (want & OFPUTIL_P_TID) != 0;
1417 if (cur_tid != want_tid) {
1418 *next = ofputil_protocol_set_tid(current, want_tid);
1419 return ofputil_make_flow_mod_table_id(want_tid);
1422 ovs_assert(current == want);
1428 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1429 * format to 'nxff'. */
1431 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1433 struct nx_set_flow_format *sff;
1436 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1438 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1439 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1440 sff->format = htonl(nxff);
1445 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1447 enum ofputil_protocol
1448 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1450 switch (flow_format) {
1451 case NXFF_OPENFLOW10:
1452 return OFPUTIL_P_OF10_STD;
1455 return OFPUTIL_P_OF10_NXM;
1462 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1464 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1466 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1469 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1472 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1474 switch (flow_format) {
1475 case NXFF_OPENFLOW10:
1476 return "openflow10";
1485 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1486 enum nx_packet_in_format packet_in_format)
1488 struct nx_set_packet_in_format *spif;
1491 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1492 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1493 spif->format = htonl(packet_in_format);
1498 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1499 * extension on or off (according to 'flow_mod_table_id'). */
1501 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1503 struct nx_flow_mod_table_id *nfmti;
1506 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1507 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1508 nfmti->set = flow_mod_table_id;
1512 struct ofputil_flow_mod_flag {
1514 enum ofp_version min_version, max_version;
1515 enum ofputil_flow_mod_flags flag;
1518 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1519 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1520 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1521 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1523 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1524 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1525 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1530 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1531 enum ofp_flow_mod_command command,
1532 enum ofp_version version,
1533 enum ofputil_flow_mod_flags *flagsp)
1535 uint16_t raw_flags = ntohs(raw_flags_);
1536 const struct ofputil_flow_mod_flag *f;
1539 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1540 if (raw_flags & f->raw_flag
1541 && version >= f->min_version
1542 && (!f->max_version || version <= f->max_version)) {
1543 raw_flags &= ~f->raw_flag;
1548 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1551 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1552 * resets counters. */
1553 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1554 && command == OFPFC_ADD) {
1555 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1558 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1562 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1563 enum ofp_version version)
1565 const struct ofputil_flow_mod_flag *f;
1569 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1571 && version >= f->min_version
1572 && (!f->max_version || version <= f->max_version)) {
1573 raw_flags |= f->raw_flag;
1577 return htons(raw_flags);
1580 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1581 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1584 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1585 * The caller must initialize 'ofpacts' and retains ownership of it.
1586 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1588 * Does not validate the flow_mod actions. The caller should do that, with
1589 * ofpacts_check(). */
1591 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1592 const struct ofp_header *oh,
1593 enum ofputil_protocol protocol,
1594 struct ofpbuf *ofpacts,
1595 ofp_port_t max_port, uint8_t max_table)
1602 /* Ignored for non-delete actions */
1603 fm->delete_reason = OFPRR_DELETE;
1605 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1606 raw = ofpraw_pull_assert(&b);
1607 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1608 /* Standard OpenFlow 1.1+ flow_mod. */
1609 const struct ofp11_flow_mod *ofm;
1611 ofm = ofpbuf_pull(&b, sizeof *ofm);
1613 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1618 error = ofpacts_pull_openflow_instructions(&b, ofpbuf_size(&b), oh->version,
1624 /* Translate the message. */
1625 fm->priority = ntohs(ofm->priority);
1626 if (ofm->command == OFPFC_ADD
1627 || (oh->version == OFP11_VERSION
1628 && (ofm->command == OFPFC_MODIFY ||
1629 ofm->command == OFPFC_MODIFY_STRICT)
1630 && ofm->cookie_mask == htonll(0))) {
1631 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1632 * not match on the cookie is treated as an "add" if there is no
1634 fm->cookie = htonll(0);
1635 fm->cookie_mask = htonll(0);
1636 fm->new_cookie = ofm->cookie;
1638 fm->cookie = ofm->cookie;
1639 fm->cookie_mask = ofm->cookie_mask;
1640 fm->new_cookie = OVS_BE64_MAX;
1642 fm->modify_cookie = false;
1643 fm->command = ofm->command;
1647 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1648 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1649 fm->table_id = ofm->table_id;
1650 if (fm->table_id == OFPTT_ALL
1651 && (oh->version == OFP11_VERSION
1652 || (ofm->command != OFPFC_DELETE &&
1653 ofm->command != OFPFC_DELETE_STRICT))) {
1654 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1657 fm->idle_timeout = ntohs(ofm->idle_timeout);
1658 fm->hard_timeout = ntohs(ofm->hard_timeout);
1659 fm->buffer_id = ntohl(ofm->buffer_id);
1660 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1665 fm->out_group = (ofm->command == OFPFC_DELETE ||
1666 ofm->command == OFPFC_DELETE_STRICT
1667 ? ntohl(ofm->out_group)
1669 raw_flags = ofm->flags;
1673 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1674 /* Standard OpenFlow 1.0 flow_mod. */
1675 const struct ofp10_flow_mod *ofm;
1677 /* Get the ofp10_flow_mod. */
1678 ofm = ofpbuf_pull(&b, sizeof *ofm);
1680 /* Translate the rule. */
1681 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1682 ofputil_normalize_match(&fm->match);
1684 /* Now get the actions. */
1685 error = ofpacts_pull_openflow_actions(&b, ofpbuf_size(&b), oh->version,
1691 /* OpenFlow 1.0 says that exact-match rules have to have the
1692 * highest possible priority. */
1693 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1694 ? ntohs(ofm->priority)
1697 /* Translate the message. */
1698 command = ntohs(ofm->command);
1699 fm->cookie = htonll(0);
1700 fm->cookie_mask = htonll(0);
1701 fm->new_cookie = ofm->cookie;
1702 fm->idle_timeout = ntohs(ofm->idle_timeout);
1703 fm->hard_timeout = ntohs(ofm->hard_timeout);
1704 fm->buffer_id = ntohl(ofm->buffer_id);
1705 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1706 fm->out_group = OFPG11_ANY;
1707 raw_flags = ofm->flags;
1708 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1709 /* Nicira extended flow_mod. */
1710 const struct nx_flow_mod *nfm;
1712 /* Dissect the message. */
1713 nfm = ofpbuf_pull(&b, sizeof *nfm);
1714 error = nx_pull_match(&b, ntohs(nfm->match_len),
1715 &fm->match, &fm->cookie, &fm->cookie_mask);
1719 error = ofpacts_pull_openflow_actions(&b, ofpbuf_size(&b), oh->version,
1725 /* Translate the message. */
1726 command = ntohs(nfm->command);
1727 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1728 /* Flow additions may only set a new cookie, not match an
1729 * existing cookie. */
1730 return OFPERR_NXBRC_NXM_INVALID;
1732 fm->priority = ntohs(nfm->priority);
1733 fm->new_cookie = nfm->cookie;
1734 fm->idle_timeout = ntohs(nfm->idle_timeout);
1735 fm->hard_timeout = ntohs(nfm->hard_timeout);
1736 fm->buffer_id = ntohl(nfm->buffer_id);
1737 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1738 fm->out_group = OFPG11_ANY;
1739 raw_flags = nfm->flags;
1744 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1745 if (protocol & OFPUTIL_P_TID) {
1746 fm->command = command & 0xff;
1747 fm->table_id = command >> 8;
1749 fm->command = command;
1750 fm->table_id = 0xff;
1754 fm->ofpacts = ofpbuf_data(ofpacts);
1755 fm->ofpacts_len = ofpbuf_size(ofpacts);
1757 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1758 oh->version, &fm->flags);
1763 if (fm->flags & OFPUTIL_FF_EMERG) {
1764 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1765 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1767 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1768 * or hard_timeout is nonzero. Otherwise, there is no good error
1769 * code, so just state that the flow table is full. */
1770 return (fm->hard_timeout || fm->idle_timeout
1771 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1772 : OFPERR_OFPFMFC_TABLE_FULL);
1775 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1776 &fm->match.flow, max_port,
1777 fm->table_id, max_table, protocol);
1781 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1782 struct ofpbuf *bands)
1784 const struct ofp13_meter_band_header *ombh;
1785 struct ofputil_meter_band *mb;
1788 ombh = ofpbuf_try_pull(msg, len);
1790 return OFPERR_OFPBRC_BAD_LEN;
1793 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1794 size_t ombh_len = ntohs(ombh->len);
1795 /* All supported band types have the same length. */
1796 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1797 return OFPERR_OFPBRC_BAD_LEN;
1799 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1800 mb->type = ntohs(ombh->type);
1801 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1802 return OFPERR_OFPMMFC_BAD_BAND;
1804 mb->rate = ntohl(ombh->rate);
1805 mb->burst_size = ntohl(ombh->burst_size);
1806 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1807 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1810 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1811 (char *) ombh + ombh_len);
1814 return OFPERR_OFPBRC_BAD_LEN;
1821 ofputil_decode_meter_mod(const struct ofp_header *oh,
1822 struct ofputil_meter_mod *mm,
1823 struct ofpbuf *bands)
1825 const struct ofp13_meter_mod *omm;
1828 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1829 ofpraw_pull_assert(&b);
1830 omm = ofpbuf_pull(&b, sizeof *omm);
1832 /* Translate the message. */
1833 mm->command = ntohs(omm->command);
1834 if (mm->command != OFPMC13_ADD &&
1835 mm->command != OFPMC13_MODIFY &&
1836 mm->command != OFPMC13_DELETE) {
1837 return OFPERR_OFPMMFC_BAD_COMMAND;
1839 mm->meter.meter_id = ntohl(omm->meter_id);
1841 if (mm->command == OFPMC13_DELETE) {
1842 mm->meter.flags = 0;
1843 mm->meter.n_bands = 0;
1844 mm->meter.bands = NULL;
1848 mm->meter.flags = ntohs(omm->flags);
1849 if (mm->meter.flags & OFPMF13_KBPS &&
1850 mm->meter.flags & OFPMF13_PKTPS) {
1851 return OFPERR_OFPMMFC_BAD_FLAGS;
1853 mm->meter.bands = ofpbuf_data(bands);
1855 error = ofputil_pull_bands(&b, ofpbuf_size(&b), &mm->meter.n_bands, bands);
1864 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1866 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1867 *meter_id = ntohl(omr->meter_id);
1871 ofputil_encode_meter_request(enum ofp_version ofp_version,
1872 enum ofputil_meter_request_type type,
1880 case OFPUTIL_METER_CONFIG:
1881 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1883 case OFPUTIL_METER_STATS:
1884 raw = OFPRAW_OFPST13_METER_REQUEST;
1887 case OFPUTIL_METER_FEATURES:
1888 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1892 msg = ofpraw_alloc(raw, ofp_version, 0);
1894 if (type != OFPUTIL_METER_FEATURES) {
1895 struct ofp13_meter_multipart_request *omr;
1896 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1897 omr->meter_id = htonl(meter_id);
1903 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1908 for (n = 0; n < n_bands; ++n) {
1909 /* Currently all band types have same size. */
1910 struct ofp13_meter_band_dscp_remark *ombh;
1911 size_t ombh_len = sizeof *ombh;
1913 ombh = ofpbuf_put_zeros(msg, ombh_len);
1915 ombh->type = htons(mb->type);
1916 ombh->len = htons(ombh_len);
1917 ombh->rate = htonl(mb->rate);
1918 ombh->burst_size = htonl(mb->burst_size);
1919 ombh->prec_level = mb->prec_level;
1925 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1927 ofputil_append_meter_config(struct list *replies,
1928 const struct ofputil_meter_config *mc)
1930 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1931 size_t start_ofs = ofpbuf_size(msg);
1932 struct ofp13_meter_config *reply = ofpbuf_put_uninit(msg, sizeof *reply);
1933 reply->flags = htons(mc->flags);
1934 reply->meter_id = htonl(mc->meter_id);
1936 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1938 reply->length = htons(ofpbuf_size(msg) - start_ofs);
1940 ofpmp_postappend(replies, start_ofs);
1943 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1945 ofputil_append_meter_stats(struct list *replies,
1946 const struct ofputil_meter_stats *ms)
1948 struct ofp13_meter_stats *reply;
1952 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
1953 reply = ofpmp_append(replies, len);
1955 reply->meter_id = htonl(ms->meter_id);
1956 reply->len = htons(len);
1957 memset(reply->pad, 0, sizeof reply->pad);
1958 reply->flow_count = htonl(ms->flow_count);
1959 reply->packet_in_count = htonll(ms->packet_in_count);
1960 reply->byte_in_count = htonll(ms->byte_in_count);
1961 reply->duration_sec = htonl(ms->duration_sec);
1962 reply->duration_nsec = htonl(ms->duration_nsec);
1964 for (n = 0; n < ms->n_bands; ++n) {
1965 const struct ofputil_meter_band_stats *src = &ms->bands[n];
1966 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
1968 dst->packet_band_count = htonll(src->packet_count);
1969 dst->byte_band_count = htonll(src->byte_count);
1973 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
1974 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
1975 * 'bands'. The caller must have initialized 'bands' and retains ownership of
1976 * it across the call.
1978 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
1979 * message. Calling this function multiple times for a single 'msg' iterates
1980 * through the replies. 'bands' is cleared for each reply.
1982 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1983 * otherwise a positive errno value. */
1985 ofputil_decode_meter_config(struct ofpbuf *msg,
1986 struct ofputil_meter_config *mc,
1987 struct ofpbuf *bands)
1989 const struct ofp13_meter_config *omc;
1992 /* Pull OpenFlow headers for the first call. */
1994 ofpraw_pull_assert(msg);
1997 if (!ofpbuf_size(msg)) {
2001 omc = ofpbuf_try_pull(msg, sizeof *omc);
2003 VLOG_WARN_RL(&bad_ofmsg_rl,
2004 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
2006 return OFPERR_OFPBRC_BAD_LEN;
2009 ofpbuf_clear(bands);
2010 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
2011 &mc->n_bands, bands);
2015 mc->meter_id = ntohl(omc->meter_id);
2016 mc->flags = ntohs(omc->flags);
2017 mc->bands = ofpbuf_data(bands);
2023 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
2024 struct ofpbuf *bands)
2026 const struct ofp13_meter_band_stats *ombs;
2027 struct ofputil_meter_band_stats *mbs;
2030 ombs = ofpbuf_try_pull(msg, len);
2032 return OFPERR_OFPBRC_BAD_LEN;
2035 n = len / sizeof *ombs;
2036 if (len != n * sizeof *ombs) {
2037 return OFPERR_OFPBRC_BAD_LEN;
2040 mbs = ofpbuf_put_uninit(bands, len);
2042 for (i = 0; i < n; ++i) {
2043 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
2044 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
2050 /* Converts an OFPMP_METER reply in 'msg' into an abstract
2051 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
2052 * decoded into 'bands'.
2054 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2055 * message. Calling this function multiple times for a single 'msg' iterates
2056 * through the replies. 'bands' is cleared for each reply.
2058 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2059 * otherwise a positive errno value. */
2061 ofputil_decode_meter_stats(struct ofpbuf *msg,
2062 struct ofputil_meter_stats *ms,
2063 struct ofpbuf *bands)
2065 const struct ofp13_meter_stats *oms;
2068 /* Pull OpenFlow headers for the first call. */
2070 ofpraw_pull_assert(msg);
2073 if (!ofpbuf_size(msg)) {
2077 oms = ofpbuf_try_pull(msg, sizeof *oms);
2079 VLOG_WARN_RL(&bad_ofmsg_rl,
2080 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2082 return OFPERR_OFPBRC_BAD_LEN;
2085 ofpbuf_clear(bands);
2086 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2087 &ms->n_bands, bands);
2091 ms->meter_id = ntohl(oms->meter_id);
2092 ms->flow_count = ntohl(oms->flow_count);
2093 ms->packet_in_count = ntohll(oms->packet_in_count);
2094 ms->byte_in_count = ntohll(oms->byte_in_count);
2095 ms->duration_sec = ntohl(oms->duration_sec);
2096 ms->duration_nsec = ntohl(oms->duration_nsec);
2097 ms->bands = ofpbuf_data(bands);
2103 ofputil_decode_meter_features(const struct ofp_header *oh,
2104 struct ofputil_meter_features *mf)
2106 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2108 mf->max_meters = ntohl(omf->max_meter);
2109 mf->band_types = ntohl(omf->band_types);
2110 mf->capabilities = ntohl(omf->capabilities);
2111 mf->max_bands = omf->max_bands;
2112 mf->max_color = omf->max_color;
2116 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2117 const struct ofp_header *request)
2119 struct ofpbuf *reply;
2120 struct ofp13_meter_features *omf;
2122 reply = ofpraw_alloc_stats_reply(request, 0);
2123 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2125 omf->max_meter = htonl(mf->max_meters);
2126 omf->band_types = htonl(mf->band_types);
2127 omf->capabilities = htonl(mf->capabilities);
2128 omf->max_bands = mf->max_bands;
2129 omf->max_color = mf->max_color;
2135 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2136 const struct ofputil_meter_mod *mm)
2140 struct ofp13_meter_mod *omm;
2142 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2143 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2144 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2145 omm->command = htons(mm->command);
2146 if (mm->command != OFPMC13_DELETE) {
2147 omm->flags = htons(mm->meter.flags);
2149 omm->meter_id = htonl(mm->meter.meter_id);
2151 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2153 ofpmsg_update_length(msg);
2158 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2159 enum ofputil_protocol protocol)
2161 return htons(protocol & OFPUTIL_P_TID
2162 ? (fm->command & 0xff) | (fm->table_id << 8)
2166 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2167 * 'protocol' and returns the message. */
2169 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2170 enum ofputil_protocol protocol)
2172 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2173 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2177 case OFPUTIL_P_OF11_STD:
2178 case OFPUTIL_P_OF12_OXM:
2179 case OFPUTIL_P_OF13_OXM:
2180 case OFPUTIL_P_OF14_OXM:
2181 case OFPUTIL_P_OF15_OXM: {
2182 struct ofp11_flow_mod *ofm;
2185 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2186 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2187 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2188 if ((protocol == OFPUTIL_P_OF11_STD
2189 && (fm->command == OFPFC_MODIFY ||
2190 fm->command == OFPFC_MODIFY_STRICT)
2191 && fm->cookie_mask == htonll(0))
2192 || fm->command == OFPFC_ADD) {
2193 ofm->cookie = fm->new_cookie;
2195 ofm->cookie = fm->cookie;
2197 ofm->cookie_mask = fm->cookie_mask;
2198 if (fm->table_id != OFPTT_ALL
2199 || (protocol != OFPUTIL_P_OF11_STD
2200 && (fm->command == OFPFC_DELETE ||
2201 fm->command == OFPFC_DELETE_STRICT))) {
2202 ofm->table_id = fm->table_id;
2206 ofm->command = fm->command;
2207 ofm->idle_timeout = htons(fm->idle_timeout);
2208 ofm->hard_timeout = htons(fm->hard_timeout);
2209 ofm->priority = htons(fm->priority);
2210 ofm->buffer_id = htonl(fm->buffer_id);
2211 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2212 ofm->out_group = htonl(fm->out_group);
2213 ofm->flags = raw_flags;
2214 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2215 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2220 case OFPUTIL_P_OF10_STD:
2221 case OFPUTIL_P_OF10_STD_TID: {
2222 struct ofp10_flow_mod *ofm;
2224 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2226 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2227 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2228 ofm->cookie = fm->new_cookie;
2229 ofm->command = ofputil_tid_command(fm, protocol);
2230 ofm->idle_timeout = htons(fm->idle_timeout);
2231 ofm->hard_timeout = htons(fm->hard_timeout);
2232 ofm->priority = htons(fm->priority);
2233 ofm->buffer_id = htonl(fm->buffer_id);
2234 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2235 ofm->flags = raw_flags;
2236 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2241 case OFPUTIL_P_OF10_NXM:
2242 case OFPUTIL_P_OF10_NXM_TID: {
2243 struct nx_flow_mod *nfm;
2246 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2247 NXM_TYPICAL_LEN + fm->ofpacts_len);
2248 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2249 nfm->command = ofputil_tid_command(fm, protocol);
2250 nfm->cookie = fm->new_cookie;
2251 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2252 nfm = ofpbuf_l3(msg);
2253 nfm->idle_timeout = htons(fm->idle_timeout);
2254 nfm->hard_timeout = htons(fm->hard_timeout);
2255 nfm->priority = htons(fm->priority);
2256 nfm->buffer_id = htonl(fm->buffer_id);
2257 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2258 nfm->flags = raw_flags;
2259 nfm->match_len = htons(match_len);
2260 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2269 ofpmsg_update_length(msg);
2274 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2275 const struct ofp10_flow_stats_request *ofsr,
2278 fsr->aggregate = aggregate;
2279 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2280 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2281 fsr->out_group = OFPG11_ANY;
2282 fsr->table_id = ofsr->table_id;
2283 fsr->cookie = fsr->cookie_mask = htonll(0);
2289 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2290 struct ofpbuf *b, bool aggregate)
2292 const struct ofp11_flow_stats_request *ofsr;
2295 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2296 fsr->aggregate = aggregate;
2297 fsr->table_id = ofsr->table_id;
2298 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2302 fsr->out_group = ntohl(ofsr->out_group);
2303 fsr->cookie = ofsr->cookie;
2304 fsr->cookie_mask = ofsr->cookie_mask;
2305 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2314 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2315 struct ofpbuf *b, bool aggregate)
2317 const struct nx_flow_stats_request *nfsr;
2320 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2321 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2322 &fsr->cookie, &fsr->cookie_mask);
2326 if (ofpbuf_size(b)) {
2327 return OFPERR_OFPBRC_BAD_LEN;
2330 fsr->aggregate = aggregate;
2331 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2332 fsr->out_group = OFPG11_ANY;
2333 fsr->table_id = nfsr->table_id;
2338 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2339 * 'port', suitable for OpenFlow version 'version'. */
2341 ofputil_encode_queue_get_config_request(enum ofp_version version,
2344 struct ofpbuf *request;
2346 if (version == OFP10_VERSION) {
2347 struct ofp10_queue_get_config_request *qgcr10;
2349 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2351 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2352 qgcr10->port = htons(ofp_to_u16(port));
2354 struct ofp11_queue_get_config_request *qgcr11;
2356 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2358 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2359 qgcr11->port = ofputil_port_to_ofp11(port);
2365 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2366 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2369 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2372 const struct ofp10_queue_get_config_request *qgcr10;
2373 const struct ofp11_queue_get_config_request *qgcr11;
2377 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2378 raw = ofpraw_pull_assert(&b);
2380 switch ((int) raw) {
2381 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2382 qgcr10 = ofpbuf_data(&b);
2383 *port = u16_to_ofp(ntohs(qgcr10->port));
2386 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2387 qgcr11 = ofpbuf_data(&b);
2388 return ofputil_port_from_ofp11(qgcr11->port, port);
2394 /* Constructs and returns the beginning of a reply to
2395 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2396 * individual queues with ofputil_append_queue_get_config_reply(). */
2398 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2400 struct ofp10_queue_get_config_reply *qgcr10;
2401 struct ofp11_queue_get_config_reply *qgcr11;
2402 struct ofpbuf *reply;
2408 error = ofputil_decode_queue_get_config_request(oh, &port);
2411 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2412 raw = ofpraw_pull_assert(&b);
2414 switch ((int) raw) {
2415 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2416 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2418 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2419 qgcr10->port = htons(ofp_to_u16(port));
2422 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2423 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2425 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2426 qgcr11->port = ofputil_port_to_ofp11(port);
2437 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2440 if (rate != UINT16_MAX) {
2441 struct ofp_queue_prop_rate *oqpr;
2443 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2444 oqpr->prop_header.property = htons(property);
2445 oqpr->prop_header.len = htons(sizeof *oqpr);
2446 oqpr->rate = htons(rate);
2450 /* Appends a queue description for 'queue_id' to the
2451 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2453 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2454 const struct ofputil_queue_config *oqc)
2456 const struct ofp_header *oh = ofpbuf_data(reply);
2457 size_t start_ofs, len_ofs;
2460 start_ofs = ofpbuf_size(reply);
2461 if (oh->version < OFP12_VERSION) {
2462 struct ofp10_packet_queue *opq10;
2464 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2465 opq10->queue_id = htonl(oqc->queue_id);
2466 len_ofs = (char *) &opq10->len - (char *) ofpbuf_data(reply);
2468 struct ofp11_queue_get_config_reply *qgcr11;
2469 struct ofp12_packet_queue *opq12;
2472 qgcr11 = ofpbuf_l3(reply);
2473 port = qgcr11->port;
2475 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2477 opq12->queue_id = htonl(oqc->queue_id);
2478 len_ofs = (char *) &opq12->len - (char *) ofpbuf_data(reply);
2481 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2482 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2484 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2485 *len = htons(ofpbuf_size(reply) - start_ofs);
2488 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2489 * stores in '*port' the port that the reply is about. The caller may call
2490 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2491 * queues included in the reply. Returns 0 if successful, otherwise an
2494 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2496 const struct ofp10_queue_get_config_reply *qgcr10;
2497 const struct ofp11_queue_get_config_reply *qgcr11;
2500 raw = ofpraw_pull_assert(reply);
2501 switch ((int) raw) {
2502 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2503 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2504 *port = u16_to_ofp(ntohs(qgcr10->port));
2507 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2508 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2509 return ofputil_port_from_ofp11(qgcr11->port, port);
2516 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2518 const struct ofp_queue_prop_rate *oqpr;
2520 if (hdr->len == htons(sizeof *oqpr)) {
2521 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2522 *rate = ntohs(oqpr->rate);
2525 return OFPERR_OFPBRC_BAD_LEN;
2529 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2530 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2531 * must already have pulled off the main header.
2533 * This function returns EOF if the last queue has already been decoded, 0 if a
2534 * queue was successfully decoded into '*queue', or an ofperr if there was a
2535 * problem decoding 'reply'. */
2537 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2538 struct ofputil_queue_config *queue)
2540 const struct ofp_header *oh;
2541 unsigned int opq_len;
2544 if (!ofpbuf_size(reply)) {
2548 queue->min_rate = UINT16_MAX;
2549 queue->max_rate = UINT16_MAX;
2552 if (oh->version < OFP12_VERSION) {
2553 const struct ofp10_packet_queue *opq10;
2555 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2557 return OFPERR_OFPBRC_BAD_LEN;
2559 queue->queue_id = ntohl(opq10->queue_id);
2560 len = ntohs(opq10->len);
2561 opq_len = sizeof *opq10;
2563 const struct ofp12_packet_queue *opq12;
2565 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2567 return OFPERR_OFPBRC_BAD_LEN;
2569 queue->queue_id = ntohl(opq12->queue_id);
2570 len = ntohs(opq12->len);
2571 opq_len = sizeof *opq12;
2574 if (len < opq_len || len > ofpbuf_size(reply) + opq_len || len % 8) {
2575 return OFPERR_OFPBRC_BAD_LEN;
2580 const struct ofp_queue_prop_header *hdr;
2581 unsigned int property;
2582 unsigned int prop_len;
2583 enum ofperr error = 0;
2585 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2586 prop_len = ntohs(hdr->len);
2587 if (prop_len < sizeof *hdr || prop_len > ofpbuf_size(reply) || prop_len % 8) {
2588 return OFPERR_OFPBRC_BAD_LEN;
2591 property = ntohs(hdr->property);
2593 case OFPQT_MIN_RATE:
2594 error = parse_queue_rate(hdr, &queue->min_rate);
2597 case OFPQT_MAX_RATE:
2598 error = parse_queue_rate(hdr, &queue->max_rate);
2602 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2609 ofpbuf_pull(reply, prop_len);
2615 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2616 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2617 * successful, otherwise an OpenFlow error code. */
2619 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2620 const struct ofp_header *oh)
2625 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2626 raw = ofpraw_pull_assert(&b);
2627 switch ((int) raw) {
2628 case OFPRAW_OFPST10_FLOW_REQUEST:
2629 return ofputil_decode_ofpst10_flow_request(fsr, ofpbuf_data(&b), false);
2631 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2632 return ofputil_decode_ofpst10_flow_request(fsr, ofpbuf_data(&b), true);
2634 case OFPRAW_OFPST11_FLOW_REQUEST:
2635 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2637 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2638 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2640 case OFPRAW_NXST_FLOW_REQUEST:
2641 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2643 case OFPRAW_NXST_AGGREGATE_REQUEST:
2644 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2647 /* Hey, the caller lied. */
2652 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2653 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2654 * 'protocol', and returns the message. */
2656 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2657 enum ofputil_protocol protocol)
2663 case OFPUTIL_P_OF11_STD:
2664 case OFPUTIL_P_OF12_OXM:
2665 case OFPUTIL_P_OF13_OXM:
2666 case OFPUTIL_P_OF14_OXM:
2667 case OFPUTIL_P_OF15_OXM: {
2668 struct ofp11_flow_stats_request *ofsr;
2670 raw = (fsr->aggregate
2671 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2672 : OFPRAW_OFPST11_FLOW_REQUEST);
2673 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2674 ofputil_match_typical_len(protocol));
2675 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2676 ofsr->table_id = fsr->table_id;
2677 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2678 ofsr->out_group = htonl(fsr->out_group);
2679 ofsr->cookie = fsr->cookie;
2680 ofsr->cookie_mask = fsr->cookie_mask;
2681 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2685 case OFPUTIL_P_OF10_STD:
2686 case OFPUTIL_P_OF10_STD_TID: {
2687 struct ofp10_flow_stats_request *ofsr;
2689 raw = (fsr->aggregate
2690 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2691 : OFPRAW_OFPST10_FLOW_REQUEST);
2692 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2693 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2694 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2695 ofsr->table_id = fsr->table_id;
2696 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2700 case OFPUTIL_P_OF10_NXM:
2701 case OFPUTIL_P_OF10_NXM_TID: {
2702 struct nx_flow_stats_request *nfsr;
2705 raw = (fsr->aggregate
2706 ? OFPRAW_NXST_AGGREGATE_REQUEST
2707 : OFPRAW_NXST_FLOW_REQUEST);
2708 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2709 ofpbuf_put_zeros(msg, sizeof *nfsr);
2710 match_len = nx_put_match(msg, &fsr->match,
2711 fsr->cookie, fsr->cookie_mask);
2713 nfsr = ofpbuf_l3(msg);
2714 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2715 nfsr->match_len = htons(match_len);
2716 nfsr->table_id = fsr->table_id;
2727 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2728 * ofputil_flow_stats in 'fs'.
2730 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2731 * OpenFlow message. Calling this function multiple times for a single 'msg'
2732 * iterates through the replies. The caller must initially leave 'msg''s layer
2733 * pointers null and not modify them between calls.
2735 * Most switches don't send the values needed to populate fs->idle_age and
2736 * fs->hard_age, so those members will usually be set to 0. If the switch from
2737 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2738 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2739 * 'idle_age' and 'hard_age' members in 'fs'.
2741 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2742 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2743 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2745 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2746 * otherwise a positive errno value. */
2748 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2750 bool flow_age_extension,
2751 struct ofpbuf *ofpacts)
2753 const struct ofp_header *oh;
2758 ? ofpraw_decode(&raw, msg->frame)
2759 : ofpraw_pull(&raw, msg));
2765 if (!ofpbuf_size(msg)) {
2767 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2768 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2769 const struct ofp11_flow_stats *ofs;
2771 uint16_t padded_match_len;
2773 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2775 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2776 "bytes at end", ofpbuf_size(msg));
2780 length = ntohs(ofs->length);
2781 if (length < sizeof *ofs) {
2782 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2783 "length %"PRIuSIZE, length);
2787 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2788 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2792 if (ofpacts_pull_openflow_instructions(msg, length - sizeof *ofs -
2793 padded_match_len, oh->version,
2795 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2799 fs->priority = ntohs(ofs->priority);
2800 fs->table_id = ofs->table_id;
2801 fs->duration_sec = ntohl(ofs->duration_sec);
2802 fs->duration_nsec = ntohl(ofs->duration_nsec);
2803 fs->idle_timeout = ntohs(ofs->idle_timeout);
2804 fs->hard_timeout = ntohs(ofs->hard_timeout);
2805 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2806 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2816 fs->cookie = ofs->cookie;
2817 fs->packet_count = ntohll(ofs->packet_count);
2818 fs->byte_count = ntohll(ofs->byte_count);
2819 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2820 const struct ofp10_flow_stats *ofs;
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 (ofpacts_pull_openflow_actions(msg, length - sizeof *ofs,
2838 oh->version, ofpacts)) {
2842 fs->cookie = get_32aligned_be64(&ofs->cookie);
2843 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2844 fs->priority = ntohs(ofs->priority);
2845 fs->table_id = ofs->table_id;
2846 fs->duration_sec = ntohl(ofs->duration_sec);
2847 fs->duration_nsec = ntohl(ofs->duration_nsec);
2848 fs->idle_timeout = ntohs(ofs->idle_timeout);
2849 fs->hard_timeout = ntohs(ofs->hard_timeout);
2852 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2853 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2855 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2856 const struct nx_flow_stats *nfs;
2857 size_t match_len, actions_len, length;
2859 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2861 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2862 "bytes at end", ofpbuf_size(msg));
2866 length = ntohs(nfs->length);
2867 match_len = ntohs(nfs->match_len);
2868 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2869 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2870 "claims invalid length %"PRIuSIZE, match_len, length);
2873 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2877 actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2878 if (ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
2883 fs->cookie = nfs->cookie;
2884 fs->table_id = nfs->table_id;
2885 fs->duration_sec = ntohl(nfs->duration_sec);
2886 fs->duration_nsec = ntohl(nfs->duration_nsec);
2887 fs->priority = ntohs(nfs->priority);
2888 fs->idle_timeout = ntohs(nfs->idle_timeout);
2889 fs->hard_timeout = ntohs(nfs->hard_timeout);
2892 if (flow_age_extension) {
2893 if (nfs->idle_age) {
2894 fs->idle_age = ntohs(nfs->idle_age) - 1;
2896 if (nfs->hard_age) {
2897 fs->hard_age = ntohs(nfs->hard_age) - 1;
2900 fs->packet_count = ntohll(nfs->packet_count);
2901 fs->byte_count = ntohll(nfs->byte_count);
2907 fs->ofpacts = ofpbuf_data(ofpacts);
2908 fs->ofpacts_len = ofpbuf_size(ofpacts);
2913 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2915 * We use this in situations where OVS internally uses UINT64_MAX to mean
2916 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2918 unknown_to_zero(uint64_t count)
2920 return count != UINT64_MAX ? count : 0;
2923 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2924 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2925 * have been initialized with ofpmp_init(). */
2927 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2928 struct list *replies)
2930 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2931 size_t start_ofs = ofpbuf_size(reply);
2932 enum ofp_version version = ofpmp_version(replies);
2933 enum ofpraw raw = ofpmp_decode_raw(replies);
2935 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2936 struct ofp11_flow_stats *ofs;
2938 ofpbuf_put_uninit(reply, sizeof *ofs);
2939 oxm_put_match(reply, &fs->match, version);
2940 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
2943 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2944 ofs->length = htons(ofpbuf_size(reply) - start_ofs);
2945 ofs->table_id = fs->table_id;
2947 ofs->duration_sec = htonl(fs->duration_sec);
2948 ofs->duration_nsec = htonl(fs->duration_nsec);
2949 ofs->priority = htons(fs->priority);
2950 ofs->idle_timeout = htons(fs->idle_timeout);
2951 ofs->hard_timeout = htons(fs->hard_timeout);
2952 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2953 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
2957 memset(ofs->pad2, 0, sizeof ofs->pad2);
2958 ofs->cookie = fs->cookie;
2959 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
2960 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
2961 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2962 struct ofp10_flow_stats *ofs;
2964 ofpbuf_put_uninit(reply, sizeof *ofs);
2965 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
2967 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2968 ofs->length = htons(ofpbuf_size(reply) - start_ofs);
2969 ofs->table_id = fs->table_id;
2971 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
2972 ofs->duration_sec = htonl(fs->duration_sec);
2973 ofs->duration_nsec = htonl(fs->duration_nsec);
2974 ofs->priority = htons(fs->priority);
2975 ofs->idle_timeout = htons(fs->idle_timeout);
2976 ofs->hard_timeout = htons(fs->hard_timeout);
2977 memset(ofs->pad2, 0, sizeof ofs->pad2);
2978 put_32aligned_be64(&ofs->cookie, fs->cookie);
2979 put_32aligned_be64(&ofs->packet_count,
2980 htonll(unknown_to_zero(fs->packet_count)));
2981 put_32aligned_be64(&ofs->byte_count,
2982 htonll(unknown_to_zero(fs->byte_count)));
2983 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2984 struct nx_flow_stats *nfs;
2987 ofpbuf_put_uninit(reply, sizeof *nfs);
2988 match_len = nx_put_match(reply, &fs->match, 0, 0);
2989 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
2991 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
2992 nfs->length = htons(ofpbuf_size(reply) - start_ofs);
2993 nfs->table_id = fs->table_id;
2995 nfs->duration_sec = htonl(fs->duration_sec);
2996 nfs->duration_nsec = htonl(fs->duration_nsec);
2997 nfs->priority = htons(fs->priority);
2998 nfs->idle_timeout = htons(fs->idle_timeout);
2999 nfs->hard_timeout = htons(fs->hard_timeout);
3000 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3001 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3003 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3004 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3006 nfs->match_len = htons(match_len);
3007 nfs->cookie = fs->cookie;
3008 nfs->packet_count = htonll(fs->packet_count);
3009 nfs->byte_count = htonll(fs->byte_count);
3014 ofpmp_postappend(replies, start_ofs);
3017 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3018 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3020 ofputil_encode_aggregate_stats_reply(
3021 const struct ofputil_aggregate_stats *stats,
3022 const struct ofp_header *request)
3024 struct ofp_aggregate_stats_reply *asr;
3025 uint64_t packet_count;
3026 uint64_t byte_count;
3030 ofpraw_decode(&raw, request);
3031 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3032 packet_count = unknown_to_zero(stats->packet_count);
3033 byte_count = unknown_to_zero(stats->byte_count);
3035 packet_count = stats->packet_count;
3036 byte_count = stats->byte_count;
3039 msg = ofpraw_alloc_stats_reply(request, 0);
3040 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3041 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3042 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3043 asr->flow_count = htonl(stats->flow_count);
3049 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3050 const struct ofp_header *reply)
3052 struct ofp_aggregate_stats_reply *asr;
3055 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
3056 ofpraw_pull_assert(&msg);
3058 asr = ofpbuf_l3(&msg);
3059 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3060 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3061 stats->flow_count = ntohl(asr->flow_count);
3066 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3067 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3068 * an OpenFlow error code. */
3070 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3071 const struct ofp_header *oh)
3076 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3077 raw = ofpraw_pull_assert(&b);
3078 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3079 const struct ofp12_flow_removed *ofr;
3082 ofr = ofpbuf_pull(&b, sizeof *ofr);
3084 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3089 fr->priority = ntohs(ofr->priority);
3090 fr->cookie = ofr->cookie;
3091 fr->reason = ofr->reason;
3092 fr->table_id = ofr->table_id;
3093 fr->duration_sec = ntohl(ofr->duration_sec);
3094 fr->duration_nsec = ntohl(ofr->duration_nsec);
3095 fr->idle_timeout = ntohs(ofr->idle_timeout);
3096 fr->hard_timeout = ntohs(ofr->hard_timeout);
3097 fr->packet_count = ntohll(ofr->packet_count);
3098 fr->byte_count = ntohll(ofr->byte_count);
3099 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3100 const struct ofp10_flow_removed *ofr;
3102 ofr = ofpbuf_pull(&b, sizeof *ofr);
3104 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3105 fr->priority = ntohs(ofr->priority);
3106 fr->cookie = ofr->cookie;
3107 fr->reason = ofr->reason;
3109 fr->duration_sec = ntohl(ofr->duration_sec);
3110 fr->duration_nsec = ntohl(ofr->duration_nsec);
3111 fr->idle_timeout = ntohs(ofr->idle_timeout);
3112 fr->hard_timeout = 0;
3113 fr->packet_count = ntohll(ofr->packet_count);
3114 fr->byte_count = ntohll(ofr->byte_count);
3115 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3116 struct nx_flow_removed *nfr;
3119 nfr = ofpbuf_pull(&b, sizeof *nfr);
3120 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3125 if (ofpbuf_size(&b)) {
3126 return OFPERR_OFPBRC_BAD_LEN;
3129 fr->priority = ntohs(nfr->priority);
3130 fr->cookie = nfr->cookie;
3131 fr->reason = nfr->reason;
3132 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3133 fr->duration_sec = ntohl(nfr->duration_sec);
3134 fr->duration_nsec = ntohl(nfr->duration_nsec);
3135 fr->idle_timeout = ntohs(nfr->idle_timeout);
3136 fr->hard_timeout = 0;
3137 fr->packet_count = ntohll(nfr->packet_count);
3138 fr->byte_count = ntohll(nfr->byte_count);
3146 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3147 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3150 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3151 enum ofputil_protocol protocol)
3154 enum ofp_flow_removed_reason reason = fr->reason;
3156 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3157 reason = OFPRR_DELETE;
3161 case OFPUTIL_P_OF11_STD:
3162 case OFPUTIL_P_OF12_OXM:
3163 case OFPUTIL_P_OF13_OXM:
3164 case OFPUTIL_P_OF14_OXM:
3165 case OFPUTIL_P_OF15_OXM: {
3166 struct ofp12_flow_removed *ofr;
3168 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3169 ofputil_protocol_to_ofp_version(protocol),
3171 ofputil_match_typical_len(protocol));
3172 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3173 ofr->cookie = fr->cookie;
3174 ofr->priority = htons(fr->priority);
3175 ofr->reason = reason;
3176 ofr->table_id = fr->table_id;
3177 ofr->duration_sec = htonl(fr->duration_sec);
3178 ofr->duration_nsec = htonl(fr->duration_nsec);
3179 ofr->idle_timeout = htons(fr->idle_timeout);
3180 ofr->hard_timeout = htons(fr->hard_timeout);
3181 ofr->packet_count = htonll(fr->packet_count);
3182 ofr->byte_count = htonll(fr->byte_count);
3183 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3187 case OFPUTIL_P_OF10_STD:
3188 case OFPUTIL_P_OF10_STD_TID: {
3189 struct ofp10_flow_removed *ofr;
3191 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3193 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3194 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3195 ofr->cookie = fr->cookie;
3196 ofr->priority = htons(fr->priority);
3197 ofr->reason = reason;
3198 ofr->duration_sec = htonl(fr->duration_sec);
3199 ofr->duration_nsec = htonl(fr->duration_nsec);
3200 ofr->idle_timeout = htons(fr->idle_timeout);
3201 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3202 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3206 case OFPUTIL_P_OF10_NXM:
3207 case OFPUTIL_P_OF10_NXM_TID: {
3208 struct nx_flow_removed *nfr;
3211 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3212 htonl(0), NXM_TYPICAL_LEN);
3213 ofpbuf_put_zeros(msg, sizeof *nfr);
3214 match_len = nx_put_match(msg, &fr->match, 0, 0);
3216 nfr = ofpbuf_l3(msg);
3217 nfr->cookie = fr->cookie;
3218 nfr->priority = htons(fr->priority);
3219 nfr->reason = reason;
3220 nfr->table_id = fr->table_id + 1;
3221 nfr->duration_sec = htonl(fr->duration_sec);
3222 nfr->duration_nsec = htonl(fr->duration_nsec);
3223 nfr->idle_timeout = htons(fr->idle_timeout);
3224 nfr->match_len = htons(match_len);
3225 nfr->packet_count = htonll(fr->packet_count);
3226 nfr->byte_count = htonll(fr->byte_count);
3238 ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin,
3239 struct match *match, struct ofpbuf *b)
3241 pin->packet = ofpbuf_data(b);
3242 pin->packet_len = ofpbuf_size(b);
3244 pin->fmd.in_port = match->flow.in_port.ofp_port;
3245 pin->fmd.tun_id = match->flow.tunnel.tun_id;
3246 pin->fmd.tun_src = match->flow.tunnel.ip_src;
3247 pin->fmd.tun_dst = match->flow.tunnel.ip_dst;
3248 pin->fmd.metadata = match->flow.metadata;
3249 memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs);
3250 pin->fmd.pkt_mark = match->flow.pkt_mark;
3254 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3255 const struct ofp_header *oh)
3260 memset(pin, 0, sizeof *pin);
3261 pin->cookie = OVS_BE64_MAX;
3263 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3264 raw = ofpraw_pull_assert(&b);
3265 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3266 const struct ofp13_packet_in *opi;
3269 size_t packet_in_size;
3271 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3272 packet_in_size = sizeof (struct ofp12_packet_in);
3274 packet_in_size = sizeof (struct ofp13_packet_in);
3277 opi = ofpbuf_pull(&b, packet_in_size);
3278 error = oxm_pull_match_loose(&b, &match);
3283 if (!ofpbuf_try_pull(&b, 2)) {
3284 return OFPERR_OFPBRC_BAD_LEN;
3287 pin->reason = opi->pi.reason;
3288 pin->table_id = opi->pi.table_id;
3289 pin->buffer_id = ntohl(opi->pi.buffer_id);
3290 pin->total_len = ntohs(opi->pi.total_len);
3292 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3293 pin->cookie = opi->cookie;
3296 ofputil_decode_packet_in_finish(pin, &match, &b);
3297 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3298 const struct ofp10_packet_in *opi;
3300 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3302 pin->packet = opi->data;
3303 pin->packet_len = ofpbuf_size(&b);
3305 pin->fmd.in_port = u16_to_ofp(ntohs(opi->in_port));
3306 pin->reason = opi->reason;
3307 pin->buffer_id = ntohl(opi->buffer_id);
3308 pin->total_len = ntohs(opi->total_len);
3309 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3310 const struct ofp11_packet_in *opi;
3313 opi = ofpbuf_pull(&b, sizeof *opi);
3315 pin->packet = ofpbuf_data(&b);
3316 pin->packet_len = ofpbuf_size(&b);
3318 pin->buffer_id = ntohl(opi->buffer_id);
3319 error = ofputil_port_from_ofp11(opi->in_port, &pin->fmd.in_port);
3323 pin->total_len = ntohs(opi->total_len);
3324 pin->reason = opi->reason;
3325 pin->table_id = opi->table_id;
3326 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3327 const struct nx_packet_in *npi;
3331 npi = ofpbuf_pull(&b, sizeof *npi);
3332 error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL,
3338 if (!ofpbuf_try_pull(&b, 2)) {
3339 return OFPERR_OFPBRC_BAD_LEN;
3342 pin->reason = npi->reason;
3343 pin->table_id = npi->table_id;
3344 pin->cookie = npi->cookie;
3346 pin->buffer_id = ntohl(npi->buffer_id);
3347 pin->total_len = ntohs(npi->total_len);
3349 ofputil_decode_packet_in_finish(pin, &match, &b);
3358 ofputil_packet_in_to_match(const struct ofputil_packet_in *pin,
3359 struct match *match)
3363 match_init_catchall(match);
3364 if (pin->fmd.tun_id != htonll(0)) {
3365 match_set_tun_id(match, pin->fmd.tun_id);
3367 if (pin->fmd.tun_src != htonl(0)) {
3368 match_set_tun_src(match, pin->fmd.tun_src);
3370 if (pin->fmd.tun_dst != htonl(0)) {
3371 match_set_tun_dst(match, pin->fmd.tun_dst);
3373 if (pin->fmd.metadata != htonll(0)) {
3374 match_set_metadata(match, pin->fmd.metadata);
3377 for (i = 0; i < FLOW_N_REGS; i++) {
3378 if (pin->fmd.regs[i]) {
3379 match_set_reg(match, i, pin->fmd.regs[i]);
3383 if (pin->fmd.pkt_mark != 0) {
3384 match_set_pkt_mark(match, pin->fmd.pkt_mark);
3387 match_set_in_port(match, pin->fmd.in_port);
3390 static struct ofpbuf *
3391 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin)
3393 struct ofp10_packet_in *opi;
3394 struct ofpbuf *packet;
3396 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3397 htonl(0), pin->packet_len);
3398 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3399 opi->total_len = htons(pin->total_len);
3400 opi->in_port = htons(ofp_to_u16(pin->fmd.in_port));
3401 opi->reason = pin->reason;
3402 opi->buffer_id = htonl(pin->buffer_id);
3404 ofpbuf_put(packet, pin->packet, pin->packet_len);
3409 static struct ofpbuf *
3410 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin)
3412 struct nx_packet_in *npi;
3413 struct ofpbuf *packet;
3417 ofputil_packet_in_to_match(pin, &match);
3419 /* The final argument is just an estimate of the space required. */
3420 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3421 htonl(0), (sizeof(struct flow_metadata) * 2
3422 + 2 + pin->packet_len));
3423 ofpbuf_put_zeros(packet, sizeof *npi);
3424 match_len = nx_put_match(packet, &match, 0, 0);
3425 ofpbuf_put_zeros(packet, 2);
3426 ofpbuf_put(packet, pin->packet, pin->packet_len);
3428 npi = ofpbuf_l3(packet);
3429 npi->buffer_id = htonl(pin->buffer_id);
3430 npi->total_len = htons(pin->total_len);
3431 npi->reason = pin->reason;
3432 npi->table_id = pin->table_id;
3433 npi->cookie = pin->cookie;
3434 npi->match_len = htons(match_len);
3439 static struct ofpbuf *
3440 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin)
3442 struct ofp11_packet_in *opi;
3443 struct ofpbuf *packet;
3445 packet = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3446 htonl(0), pin->packet_len);
3447 opi = ofpbuf_put_zeros(packet, sizeof *opi);
3448 opi->buffer_id = htonl(pin->buffer_id);
3449 opi->in_port = ofputil_port_to_ofp11(pin->fmd.in_port);
3450 opi->in_phy_port = opi->in_port;
3451 opi->total_len = htons(pin->total_len);
3452 opi->reason = pin->reason;
3453 opi->table_id = pin->table_id;
3455 ofpbuf_put(packet, pin->packet, pin->packet_len);
3460 static struct ofpbuf *
3461 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3462 enum ofputil_protocol protocol)
3464 struct ofp13_packet_in *opi;
3466 enum ofpraw packet_in_raw;
3467 enum ofp_version packet_in_version;
3468 size_t packet_in_size;
3469 struct ofpbuf *packet;
3471 if (protocol == OFPUTIL_P_OF12_OXM) {
3472 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3473 packet_in_version = OFP12_VERSION;
3474 packet_in_size = sizeof (struct ofp12_packet_in);
3476 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3477 packet_in_version = OFP13_VERSION;
3478 packet_in_size = sizeof (struct ofp13_packet_in);
3481 ofputil_packet_in_to_match(pin, &match);
3483 /* The final argument is just an estimate of the space required. */
3484 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3485 htonl(0), (sizeof(struct flow_metadata) * 2
3486 + 2 + pin->packet_len));
3487 ofpbuf_put_zeros(packet, packet_in_size);
3488 oxm_put_match(packet, &match, ofputil_protocol_to_ofp_version(protocol));
3489 ofpbuf_put_zeros(packet, 2);
3490 ofpbuf_put(packet, pin->packet, pin->packet_len);
3492 opi = ofpbuf_l3(packet);
3493 opi->pi.buffer_id = htonl(pin->buffer_id);
3494 opi->pi.total_len = htons(pin->total_len);
3495 opi->pi.reason = pin->reason;
3496 opi->pi.table_id = pin->table_id;
3497 if (protocol == OFPUTIL_P_OF13_OXM) {
3498 opi->cookie = pin->cookie;
3504 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3505 * in the format specified by 'packet_in_format'. */
3507 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3508 enum ofputil_protocol protocol,
3509 enum nx_packet_in_format packet_in_format)
3511 struct ofpbuf *packet;
3514 case OFPUTIL_P_OF10_STD:
3515 case OFPUTIL_P_OF10_STD_TID:
3516 case OFPUTIL_P_OF10_NXM:
3517 case OFPUTIL_P_OF10_NXM_TID:
3518 packet = (packet_in_format == NXPIF_NXM
3519 ? ofputil_encode_nx_packet_in(pin)
3520 : ofputil_encode_ofp10_packet_in(pin));
3523 case OFPUTIL_P_OF11_STD:
3524 packet = ofputil_encode_ofp11_packet_in(pin);
3527 case OFPUTIL_P_OF12_OXM:
3528 case OFPUTIL_P_OF13_OXM:
3529 case OFPUTIL_P_OF14_OXM:
3530 case OFPUTIL_P_OF15_OXM:
3531 packet = ofputil_encode_ofp12_packet_in(pin, protocol);
3538 ofpmsg_update_length(packet);
3542 /* Returns a string form of 'reason'. The return value is either a statically
3543 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3544 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3546 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3547 char *reasonbuf, size_t bufsize)
3554 case OFPR_INVALID_TTL:
3555 return "invalid_ttl";
3557 case OFPR_N_REASONS:
3559 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3565 ofputil_packet_in_reason_from_string(const char *s,
3566 enum ofp_packet_in_reason *reason)
3570 for (i = 0; i < OFPR_N_REASONS; i++) {
3571 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3572 const char *reason_s;
3574 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3576 if (!strcasecmp(s, reason_s)) {
3584 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3587 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3588 * message's actions. The caller must initialize 'ofpacts' and retains
3589 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3591 * Returns 0 if successful, otherwise an OFPERR_* value. */
3593 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3594 const struct ofp_header *oh,
3595 struct ofpbuf *ofpacts)
3600 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3601 raw = ofpraw_pull_assert(&b);
3603 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3605 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3607 po->buffer_id = ntohl(opo->buffer_id);
3608 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3613 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3614 oh->version, ofpacts);
3618 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3620 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3622 po->buffer_id = ntohl(opo->buffer_id);
3623 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3625 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3626 oh->version, ofpacts);
3634 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3635 && po->in_port != OFPP_LOCAL
3636 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3637 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3639 return OFPERR_OFPBRC_BAD_PORT;
3642 po->ofpacts = ofpbuf_data(ofpacts);
3643 po->ofpacts_len = ofpbuf_size(ofpacts);
3645 if (po->buffer_id == UINT32_MAX) {
3646 po->packet = ofpbuf_data(&b);
3647 po->packet_len = ofpbuf_size(&b);
3656 /* ofputil_phy_port */
3658 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3659 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3660 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3661 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3662 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3663 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3664 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3665 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3667 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3668 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3669 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3670 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3671 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3672 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3674 static enum netdev_features
3675 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3677 uint32_t ofp10 = ntohl(ofp10_);
3678 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3682 netdev_port_features_to_ofp10(enum netdev_features features)
3684 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3687 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3688 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3689 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3690 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3691 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3692 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3693 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3694 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3695 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3696 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3697 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3698 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3699 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3700 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3701 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3702 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3704 static enum netdev_features
3705 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3707 return ntohl(ofp11) & 0xffff;
3711 netdev_port_features_to_ofp11(enum netdev_features features)
3713 return htonl(features & 0xffff);
3717 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3718 const struct ofp10_phy_port *opp)
3720 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3721 memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN);
3722 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3724 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3725 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3727 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3728 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3729 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3730 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3732 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3733 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3739 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3740 const struct ofp11_port *op)
3744 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3748 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3749 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3751 pp->config = ntohl(op->config) & OFPPC11_ALL;
3752 pp->state = ntohl(op->state) & OFPPS11_ALL;
3754 pp->curr = netdev_port_features_from_ofp11(op->curr);
3755 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3756 pp->supported = netdev_port_features_from_ofp11(op->supported);
3757 pp->peer = netdev_port_features_from_ofp11(op->peer);
3759 pp->curr_speed = ntohl(op->curr_speed);
3760 pp->max_speed = ntohl(op->max_speed);
3766 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3767 struct ofputil_phy_port *pp)
3769 struct ofp14_port_desc_prop_ethernet *eth = ofpbuf_data(payload);
3771 if (ofpbuf_size(payload) != sizeof *eth) {
3772 return OFPERR_OFPBPC_BAD_LEN;
3775 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3776 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3777 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3778 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3780 pp->curr_speed = ntohl(eth->curr_speed);
3781 pp->max_speed = ntohl(eth->max_speed);
3787 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3789 struct ofpbuf properties;
3790 struct ofp14_port *op;
3794 op = ofpbuf_try_pull(msg, sizeof *op);
3796 return OFPERR_OFPBRC_BAD_LEN;
3799 len = ntohs(op->length);
3800 if (len < sizeof *op || len - sizeof *op > ofpbuf_size(msg)) {
3801 return OFPERR_OFPBRC_BAD_LEN;
3804 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
3806 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3810 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3811 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3813 pp->config = ntohl(op->config) & OFPPC11_ALL;
3814 pp->state = ntohl(op->state) & OFPPS11_ALL;
3816 while (ofpbuf_size(&properties) > 0) {
3817 struct ofpbuf payload;
3821 error = ofputil_pull_property(&properties, &payload, &type);
3827 case OFPPDPT14_ETHERNET:
3828 error = parse_ofp14_port_ethernet_property(&payload, pp);
3832 log_property(true, "unknown port property %"PRIu16, type);
3846 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3847 struct ofp10_phy_port *opp)
3849 memset(opp, 0, sizeof *opp);
3851 opp->port_no = htons(ofp_to_u16(pp->port_no));
3852 memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3853 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3855 opp->config = htonl(pp->config & OFPPC10_ALL);
3856 opp->state = htonl(pp->state & OFPPS10_ALL);
3858 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3859 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3860 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3861 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3865 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3866 struct ofp11_port *op)
3868 memset(op, 0, sizeof *op);
3870 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3871 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3872 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3874 op->config = htonl(pp->config & OFPPC11_ALL);
3875 op->state = htonl(pp->state & OFPPS11_ALL);
3877 op->curr = netdev_port_features_to_ofp11(pp->curr);
3878 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3879 op->supported = netdev_port_features_to_ofp11(pp->supported);
3880 op->peer = netdev_port_features_to_ofp11(pp->peer);
3882 op->curr_speed = htonl(pp->curr_speed);
3883 op->max_speed = htonl(pp->max_speed);
3887 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3890 struct ofp14_port *op;
3891 struct ofp14_port_desc_prop_ethernet *eth;
3893 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3895 op = ofpbuf_put_zeros(b, sizeof *op);
3896 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3897 op->length = htons(sizeof *op + sizeof *eth);
3898 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3899 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3900 op->config = htonl(pp->config & OFPPC11_ALL);
3901 op->state = htonl(pp->state & OFPPS11_ALL);
3903 eth = ofpbuf_put_zeros(b, sizeof *eth);
3904 eth->type = htons(OFPPDPT14_ETHERNET);
3905 eth->length = htons(sizeof *eth);
3906 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3907 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3908 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3909 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3910 eth->curr_speed = htonl(pp->curr_speed);
3911 eth->max_speed = htonl(pp->max_speed);
3915 ofputil_put_phy_port(enum ofp_version ofp_version,
3916 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3918 switch (ofp_version) {
3919 case OFP10_VERSION: {
3920 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3921 ofputil_encode_ofp10_phy_port(pp, opp);
3927 case OFP13_VERSION: {
3928 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3929 ofputil_encode_ofp11_port(pp, op);
3935 ofputil_put_ofp14_port(pp, b);
3944 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
3950 ofpbuf_use_const(&b, request, ntohs(request->length));
3951 raw = ofpraw_pull_assert(&b);
3952 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
3955 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
3956 ovs_be32 *ofp11_port;
3958 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
3959 return ofputil_port_from_ofp11(*ofp11_port, port);
3966 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
3969 struct ofpbuf *request;
3970 ovs_be32 ofp11_port;
3972 switch (ofp_version) {
3978 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
3983 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
3985 ofp11_port = ofputil_port_to_ofp11(port);
3986 ofpbuf_put(request, &ofp11_port, sizeof ofp11_port);
3997 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
3998 struct list *replies)
4000 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4001 size_t start_ofs = ofpbuf_size(reply);
4003 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4004 ofpmp_postappend(replies, start_ofs);
4007 /* ofputil_switch_features */
4009 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4010 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4011 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4012 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4013 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4014 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4015 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4016 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4019 ofputil_capabilities_mask(enum ofp_version ofp_version)
4021 /* Handle capabilities whose bit is unique for all Open Flow versions */
4022 switch (ofp_version) {
4025 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4030 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4032 /* Caller needs to check osf->header.version itself */
4037 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
4038 * abstract representation in '*features'. Initializes '*b' to iterate over
4039 * the OpenFlow port structures following 'osf' with later calls to
4040 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
4041 * OFPERR_* value. */
4043 ofputil_decode_switch_features(const struct ofp_header *oh,
4044 struct ofputil_switch_features *features,
4047 const struct ofp_switch_features *osf;
4050 ofpbuf_use_const(b, oh, ntohs(oh->length));
4051 raw = ofpraw_pull_assert(b);
4053 osf = ofpbuf_pull(b, sizeof *osf);
4054 features->datapath_id = ntohll(osf->datapath_id);
4055 features->n_buffers = ntohl(osf->n_buffers);
4056 features->n_tables = osf->n_tables;
4057 features->auxiliary_id = 0;
4059 features->capabilities = ntohl(osf->capabilities) &
4060 ofputil_capabilities_mask(oh->version);
4062 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4063 if (osf->capabilities & htonl(OFPC10_STP)) {
4064 features->capabilities |= OFPUTIL_C_STP;
4066 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4068 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4069 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4070 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4071 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4073 features->ofpacts = 0;
4074 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4075 features->auxiliary_id = osf->auxiliary_id;
4078 return OFPERR_OFPBRC_BAD_VERSION;
4084 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4085 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4086 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4088 * Given a buffer 'b' that contains a Features Reply message, this message
4089 * checks if it contains a complete list of the switch's ports. Returns true,
4090 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4091 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4094 * When this function returns false, the caller should send an OFPST_PORT_DESC
4095 * stats request to get the ports. */
4097 ofputil_switch_features_has_ports(struct ofpbuf *b)
4099 struct ofp_header *oh = ofpbuf_data(b);
4100 size_t phy_port_size;
4102 if (oh->version >= OFP13_VERSION) {
4103 /* OpenFlow 1.3+ never has ports in the feature reply. */
4107 phy_port_size = (oh->version == OFP10_VERSION
4108 ? sizeof(struct ofp10_phy_port)
4109 : sizeof(struct ofp11_port));
4110 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4111 /* There's room for additional ports in the feature reply.
4112 * Assume that the list is complete. */
4116 /* The feature reply has no room for more ports. Probably the list is
4117 * truncated. Drop the ports and tell the caller to retrieve them with
4118 * OFPST_PORT_DESC. */
4119 ofpbuf_set_size(b, sizeof *oh + sizeof(struct ofp_switch_features));
4120 ofpmsg_update_length(b);
4124 /* Returns a buffer owned by the caller that encodes 'features' in the format
4125 * required by 'protocol' with the given 'xid'. The caller should append port
4126 * information to the buffer with subsequent calls to
4127 * ofputil_put_switch_features_port(). */
4129 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4130 enum ofputil_protocol protocol, ovs_be32 xid)
4132 struct ofp_switch_features *osf;
4134 enum ofp_version version;
4137 version = ofputil_protocol_to_ofp_version(protocol);
4140 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4144 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4149 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4154 b = ofpraw_alloc_xid(raw, version, xid, 0);
4155 osf = ofpbuf_put_zeros(b, sizeof *osf);
4156 osf->datapath_id = htonll(features->datapath_id);
4157 osf->n_buffers = htonl(features->n_buffers);
4158 osf->n_tables = features->n_tables;
4160 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4161 osf->capabilities = htonl(features->capabilities &
4162 ofputil_capabilities_mask(version));
4165 if (features->capabilities & OFPUTIL_C_STP) {
4166 osf->capabilities |= htonl(OFPC10_STP);
4168 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4174 osf->auxiliary_id = features->auxiliary_id;
4178 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4179 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4189 /* Encodes 'pp' into the format required by the switch_features message already
4190 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4191 * and appends the encoded version to 'b'. */
4193 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4196 const struct ofp_header *oh = ofpbuf_data(b);
4198 if (oh->version < OFP13_VERSION) {
4199 /* Try adding a port description to the message, but drop it again if
4200 * the buffer overflows. (This possibility for overflow is why
4201 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4202 size_t start_ofs = ofpbuf_size(b);
4203 ofputil_put_phy_port(oh->version, pp, b);
4204 if (ofpbuf_size(b) > UINT16_MAX) {
4205 ofpbuf_set_size(b, start_ofs);
4210 /* ofputil_port_status */
4212 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4213 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4215 ofputil_decode_port_status(const struct ofp_header *oh,
4216 struct ofputil_port_status *ps)
4218 const struct ofp_port_status *ops;
4222 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4223 ofpraw_pull_assert(&b);
4224 ops = ofpbuf_pull(&b, sizeof *ops);
4226 if (ops->reason != OFPPR_ADD &&
4227 ops->reason != OFPPR_DELETE &&
4228 ops->reason != OFPPR_MODIFY) {
4229 return OFPERR_NXBRC_BAD_REASON;
4231 ps->reason = ops->reason;
4233 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4234 ovs_assert(retval != EOF);
4238 /* Converts the abstract form of a "port status" message in '*ps' into an
4239 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4240 * a buffer owned by the caller. */
4242 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4243 enum ofputil_protocol protocol)
4245 struct ofp_port_status *ops;
4247 enum ofp_version version;
4250 version = ofputil_protocol_to_ofp_version(protocol);
4253 raw = OFPRAW_OFPT10_PORT_STATUS;
4259 raw = OFPRAW_OFPT11_PORT_STATUS;
4264 raw = OFPRAW_OFPT14_PORT_STATUS;
4271 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4272 ops = ofpbuf_put_zeros(b, sizeof *ops);
4273 ops->reason = ps->reason;
4274 ofputil_put_phy_port(version, &ps->desc, b);
4275 ofpmsg_update_length(b);
4279 /* ofputil_port_mod */
4282 parse_port_mod_ethernet_property(struct ofpbuf *property,
4283 struct ofputil_port_mod *pm)
4285 struct ofp14_port_mod_prop_ethernet *eth = ofpbuf_data(property);
4287 if (ofpbuf_size(property) != sizeof *eth) {
4288 return OFPERR_OFPBRC_BAD_LEN;
4291 pm->advertise = netdev_port_features_from_ofp11(eth->advertise);
4295 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4296 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4298 ofputil_decode_port_mod(const struct ofp_header *oh,
4299 struct ofputil_port_mod *pm, bool loose)
4304 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4305 raw = ofpraw_pull_assert(&b);
4307 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4308 const struct ofp10_port_mod *opm = ofpbuf_data(&b);
4310 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4311 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4312 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4313 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4314 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4315 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4316 const struct ofp11_port_mod *opm = ofpbuf_data(&b);
4319 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4324 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4325 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4326 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4327 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4328 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4329 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4332 memset(pm, 0, sizeof *pm);
4334 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4339 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4340 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4341 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4343 while (ofpbuf_size(&b) > 0) {
4344 struct ofpbuf property;
4348 error = ofputil_pull_property(&b, &property, &type);
4354 case OFPPMPT14_ETHERNET:
4355 error = parse_port_mod_ethernet_property(&property, pm);
4359 log_property(loose, "unknown port_mod property %"PRIu16, type);
4362 } else if (type == OFPPMPT14_EXPERIMENTER) {
4363 error = OFPERR_OFPBPC_BAD_EXPERIMENTER;
4365 error = OFPERR_OFPBRC_BAD_TYPE;
4375 return OFPERR_OFPBRC_BAD_TYPE;
4378 pm->config &= pm->mask;
4382 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4383 * message suitable for 'protocol', and returns that encoded form in a buffer
4384 * owned by the caller. */
4386 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4387 enum ofputil_protocol protocol)
4389 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4392 switch (ofp_version) {
4393 case OFP10_VERSION: {
4394 struct ofp10_port_mod *opm;
4396 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4397 opm = ofpbuf_put_zeros(b, sizeof *opm);
4398 opm->port_no = htons(ofp_to_u16(pm->port_no));
4399 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4400 opm->config = htonl(pm->config & OFPPC10_ALL);
4401 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4402 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4408 case OFP13_VERSION: {
4409 struct ofp11_port_mod *opm;
4411 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4412 opm = ofpbuf_put_zeros(b, sizeof *opm);
4413 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4414 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4415 opm->config = htonl(pm->config & OFPPC11_ALL);
4416 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4417 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4421 case OFP15_VERSION: {
4422 struct ofp14_port_mod_prop_ethernet *eth;
4423 struct ofp14_port_mod *opm;
4425 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, sizeof *eth);
4426 opm = ofpbuf_put_zeros(b, sizeof *opm);
4427 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4428 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4429 opm->config = htonl(pm->config & OFPPC11_ALL);
4430 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4432 if (pm->advertise) {
4433 eth = ofpbuf_put_zeros(b, sizeof *eth);
4434 eth->type = htons(OFPPMPT14_ETHERNET);
4435 eth->length = htons(sizeof *eth);
4436 eth->advertise = netdev_port_features_to_ofp11(pm->advertise);
4448 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4453 error = ofputil_pull_property(msg, payload, typep);
4454 if (payload && !error) {
4455 ofpbuf_pull(payload, sizeof(struct ofp_prop_header));
4461 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4466 while (ofpbuf_size(payload) > 0) {
4470 error = pull_table_feature_property(payload, NULL, &type);
4474 if (type < CHAR_BIT * sizeof types) {
4475 types |= 1u << type;
4479 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4484 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4487 while (ofpbuf_size(payload) > 0) {
4488 enum ovs_instruction_type inst;
4492 error = pull_table_feature_property(payload, NULL, &ofpit);
4497 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4499 *insts |= 1u << inst;
4500 } else if (!loose) {
4508 parse_table_features_next_table(struct ofpbuf *payload,
4509 unsigned long int *next_tables)
4513 memset(next_tables, 0, bitmap_n_bytes(255));
4514 for (i = 0; i < ofpbuf_size(payload); i++) {
4515 uint8_t id = ((const uint8_t *) ofpbuf_data(payload))[i];
4517 return OFPERR_OFPBPC_BAD_VALUE;
4519 bitmap_set1(next_tables, id);
4525 parse_oxm(struct ofpbuf *b, bool loose,
4526 const struct mf_field **fieldp, bool *hasmask)
4531 oxmp = ofpbuf_try_pull(b, sizeof *oxmp);
4533 return OFPERR_OFPBPC_BAD_LEN;
4537 /* Determine '*hasmask'. If 'oxm' is masked, convert it to the equivalent
4538 * unmasked version, because the table of OXM fields we support only has
4539 * masked versions of fields that we support with masks, but we should be
4540 * able to parse the masked versions of those here. */
4541 *hasmask = NXM_HASMASK(oxm);
4543 if (NXM_LENGTH(oxm) & 1) {
4544 return OFPERR_OFPBPC_BAD_VALUE;
4546 oxm = NXM_HEADER(NXM_VENDOR(oxm), NXM_FIELD(oxm), NXM_LENGTH(oxm) / 2);
4549 *fieldp = mf_from_nxm_header(oxm);
4551 log_property(loose, "unknown OXM field %#"PRIx32, ntohl(*oxmp));
4553 return *fieldp ? 0 : OFPERR_OFPBMC_BAD_FIELD;
4557 parse_oxms(struct ofpbuf *payload, bool loose,
4558 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4560 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4561 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4563 while (ofpbuf_size(payload) > 0) {
4564 const struct mf_field *field;
4568 error = parse_oxm(payload, loose, &field, &hasmask);
4570 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4571 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4577 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4578 return OFPERR_OFPBMC_BAD_MASK;
4582 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4583 return OFPERR_OFPBMC_BAD_MASK;
4588 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4589 * ofputil_table_features in 'tf'.
4591 * If 'loose' is true, this function ignores properties and values that it does
4592 * not understand, as a controller would want to do when interpreting
4593 * capabilities provided by a switch. If 'loose' is false, this function
4594 * treats unknown properties and values as an error, as a switch would want to
4595 * do when interpreting a configuration request made by a controller.
4597 * A single OpenFlow message can specify features for multiple tables. Calling
4598 * this function multiple times for a single 'msg' iterates through the tables
4599 * in the message. The caller must initially leave 'msg''s layer pointers null
4600 * and not modify them between calls.
4602 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4603 * a positive "enum ofperr" value. */
4605 ofputil_decode_table_features(struct ofpbuf *msg,
4606 struct ofputil_table_features *tf, bool loose)
4608 const struct ofp_header *oh;
4609 struct ofp13_table_features *otf;
4610 struct ofpbuf properties;
4613 memset(tf, 0, sizeof *tf);
4616 ofpraw_pull_assert(msg);
4618 oh = ofpbuf_l2(msg);
4620 if (!ofpbuf_size(msg)) {
4624 if (ofpbuf_size(msg) < sizeof *otf) {
4625 return OFPERR_OFPBPC_BAD_LEN;
4628 otf = ofpbuf_data(msg);
4629 len = ntohs(otf->length);
4630 if (len < sizeof *otf || len % 8 || len > ofpbuf_size(msg)) {
4631 return OFPERR_OFPBPC_BAD_LEN;
4633 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
4634 ofpbuf_pull(&properties, sizeof *otf);
4636 tf->table_id = otf->table_id;
4637 if (tf->table_id == OFPTT_ALL) {
4638 return OFPERR_OFPTFFC_BAD_TABLE;
4641 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4642 tf->metadata_match = otf->metadata_match;
4643 tf->metadata_write = otf->metadata_write;
4644 tf->miss_config = ofputil_table_miss_from_config(otf->config, oh->version);
4645 tf->max_entries = ntohl(otf->max_entries);
4647 while (ofpbuf_size(&properties) > 0) {
4648 struct ofpbuf payload;
4652 error = pull_table_feature_property(&properties, &payload, &type);
4657 switch ((enum ofp13_table_feature_prop_type) type) {
4658 case OFPTFPT13_INSTRUCTIONS:
4659 error = parse_instruction_ids(&payload, loose,
4660 &tf->nonmiss.instructions);
4662 case OFPTFPT13_INSTRUCTIONS_MISS:
4663 error = parse_instruction_ids(&payload, loose,
4664 &tf->miss.instructions);
4667 case OFPTFPT13_NEXT_TABLES:
4668 error = parse_table_features_next_table(&payload,
4671 case OFPTFPT13_NEXT_TABLES_MISS:
4672 error = parse_table_features_next_table(&payload, tf->miss.next);
4675 case OFPTFPT13_WRITE_ACTIONS:
4676 error = parse_action_bitmap(&payload, oh->version,
4677 &tf->nonmiss.write.ofpacts);
4679 case OFPTFPT13_WRITE_ACTIONS_MISS:
4680 error = parse_action_bitmap(&payload, oh->version,
4681 &tf->miss.write.ofpacts);
4684 case OFPTFPT13_APPLY_ACTIONS:
4685 error = parse_action_bitmap(&payload, oh->version,
4686 &tf->nonmiss.apply.ofpacts);
4688 case OFPTFPT13_APPLY_ACTIONS_MISS:
4689 error = parse_action_bitmap(&payload, oh->version,
4690 &tf->miss.apply.ofpacts);
4693 case OFPTFPT13_MATCH:
4694 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4696 case OFPTFPT13_WILDCARDS:
4697 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4700 case OFPTFPT13_WRITE_SETFIELD:
4701 error = parse_oxms(&payload, loose,
4702 &tf->nonmiss.write.set_fields, NULL);
4704 case OFPTFPT13_WRITE_SETFIELD_MISS:
4705 error = parse_oxms(&payload, loose,
4706 &tf->miss.write.set_fields, NULL);
4708 case OFPTFPT13_APPLY_SETFIELD:
4709 error = parse_oxms(&payload, loose,
4710 &tf->nonmiss.apply.set_fields, NULL);
4712 case OFPTFPT13_APPLY_SETFIELD_MISS:
4713 error = parse_oxms(&payload, loose,
4714 &tf->miss.apply.set_fields, NULL);
4717 case OFPTFPT13_EXPERIMENTER:
4718 case OFPTFPT13_EXPERIMENTER_MISS:
4720 log_property(loose, "unknown table features property %"PRIu16,
4722 error = loose ? 0 : OFPERR_OFPBPC_BAD_TYPE;
4730 /* Fix inconsistencies:
4732 * - Turn off 'mask' and 'wildcard' bits that are not in 'match',
4733 * because a field must be matchable to be masked or wildcarded.
4735 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4736 * that is arbitrarily maskable can be wildcarded entirely. */
4737 bitmap_and(tf->mask.bm, tf->match.bm, MFF_N_IDS);
4738 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4740 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4745 /* Encodes and returns a request to obtain the table features of a switch.
4746 * The message is encoded for OpenFlow version 'ofp_version'. */
4748 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4750 struct ofpbuf *request = NULL;
4752 switch (ofp_version) {
4756 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4757 "(\'-O OpenFlow13\')");
4761 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4771 /* ofputil_table_mod */
4773 /* Given 'config', taken from an OpenFlow 'version' message that specifies
4774 * table configuration (a table mod, table stats, or table features message),
4775 * returns the table miss configuration that it specifies. */
4776 static enum ofputil_table_miss
4777 ofputil_table_miss_from_config(ovs_be32 config_, enum ofp_version version)
4779 uint32_t config = ntohl(config_);
4781 if (version < OFP13_VERSION) {
4782 switch (config & OFPTC11_TABLE_MISS_MASK) {
4783 case OFPTC11_TABLE_MISS_CONTROLLER:
4784 return OFPUTIL_TABLE_MISS_CONTROLLER;
4786 case OFPTC11_TABLE_MISS_CONTINUE:
4787 return OFPUTIL_TABLE_MISS_CONTINUE;
4789 case OFPTC11_TABLE_MISS_DROP:
4790 return OFPUTIL_TABLE_MISS_DROP;
4793 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
4794 return OFPUTIL_TABLE_MISS_CONTROLLER;
4797 return OFPUTIL_TABLE_MISS_DEFAULT;
4801 /* Given a table miss configuration, returns the corresponding OpenFlow table
4802 * configuration for use in an OpenFlow message of the given 'version'. */
4804 ofputil_table_miss_to_config(enum ofputil_table_miss miss,
4805 enum ofp_version version)
4807 if (version < OFP13_VERSION) {
4809 case OFPUTIL_TABLE_MISS_CONTROLLER:
4810 case OFPUTIL_TABLE_MISS_DEFAULT:
4811 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
4813 case OFPUTIL_TABLE_MISS_CONTINUE:
4814 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
4816 case OFPUTIL_TABLE_MISS_DROP:
4817 return htonl(OFPTC11_TABLE_MISS_DROP);
4827 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
4828 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4830 ofputil_decode_table_mod(const struct ofp_header *oh,
4831 struct ofputil_table_mod *pm)
4836 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4837 raw = ofpraw_pull_assert(&b);
4839 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
4840 const struct ofp11_table_mod *otm = ofpbuf_data(&b);
4842 pm->table_id = otm->table_id;
4843 pm->miss_config = ofputil_table_miss_from_config(otm->config,
4845 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
4846 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
4848 pm->table_id = otm->table_id;
4849 pm->miss_config = ofputil_table_miss_from_config(otm->config,
4851 /* We do not understand any properties yet, so we do not bother
4854 return OFPERR_OFPBRC_BAD_TYPE;
4860 /* Converts the abstract form of a "table mod" message in '*pm' into an OpenFlow
4861 * message suitable for 'protocol', and returns that encoded form in a buffer
4862 * owned by the caller. */
4864 ofputil_encode_table_mod(const struct ofputil_table_mod *pm,
4865 enum ofputil_protocol protocol)
4867 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4870 switch (ofp_version) {
4871 case OFP10_VERSION: {
4872 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
4873 "(\'-O OpenFlow11\')");
4878 case OFP13_VERSION: {
4879 struct ofp11_table_mod *otm;
4881 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
4882 otm = ofpbuf_put_zeros(b, sizeof *otm);
4883 otm->table_id = pm->table_id;
4884 otm->config = ofputil_table_miss_to_config(pm->miss_config,
4889 case OFP15_VERSION: {
4890 struct ofp14_table_mod *otm;
4892 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
4893 otm = ofpbuf_put_zeros(b, sizeof *otm);
4894 otm->table_id = pm->table_id;
4895 otm->config = ofputil_table_miss_to_config(pm->miss_config,
4906 /* ofputil_role_request */
4908 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
4909 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
4910 * OFPERR_* value. */
4912 ofputil_decode_role_message(const struct ofp_header *oh,
4913 struct ofputil_role_request *rr)
4918 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4919 raw = ofpraw_pull_assert(&b);
4921 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
4922 raw == OFPRAW_OFPT12_ROLE_REPLY) {
4923 const struct ofp12_role_request *orr = ofpbuf_l3(&b);
4925 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
4926 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
4927 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
4928 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
4929 return OFPERR_OFPRRFC_BAD_ROLE;
4932 rr->role = ntohl(orr->role);
4933 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
4934 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
4935 : orr->generation_id == OVS_BE64_MAX) {
4936 rr->have_generation_id = false;
4937 rr->generation_id = 0;
4939 rr->have_generation_id = true;
4940 rr->generation_id = ntohll(orr->generation_id);
4942 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
4943 raw == OFPRAW_NXT_ROLE_REPLY) {
4944 const struct nx_role_request *nrr = ofpbuf_l3(&b);
4946 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
4947 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
4948 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
4950 if (nrr->role != htonl(NX_ROLE_OTHER) &&
4951 nrr->role != htonl(NX_ROLE_MASTER) &&
4952 nrr->role != htonl(NX_ROLE_SLAVE)) {
4953 return OFPERR_OFPRRFC_BAD_ROLE;
4956 rr->role = ntohl(nrr->role) + 1;
4957 rr->have_generation_id = false;
4958 rr->generation_id = 0;
4966 /* Returns an encoded form of a role reply suitable for the "request" in a
4967 * buffer owned by the caller. */
4969 ofputil_encode_role_reply(const struct ofp_header *request,
4970 const struct ofputil_role_request *rr)
4975 raw = ofpraw_decode_assert(request);
4976 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
4977 struct ofp12_role_request *orr;
4979 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
4980 orr = ofpbuf_put_zeros(buf, sizeof *orr);
4982 orr->role = htonl(rr->role);
4983 orr->generation_id = htonll(rr->have_generation_id
4986 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
4987 struct nx_role_request *nrr;
4989 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
4990 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
4991 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
4993 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
4994 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
4995 nrr->role = htonl(rr->role - 1);
5003 /* Encodes "role status" message 'status' for sending in the given
5004 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5005 * otherwise a null pointer. */
5007 ofputil_encode_role_status(const struct ofputil_role_status *status,
5008 enum ofputil_protocol protocol)
5010 enum ofp_version version;
5012 version = ofputil_protocol_to_ofp_version(protocol);
5013 if (version >= OFP14_VERSION) {
5014 struct ofp14_role_status *rstatus;
5017 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5019 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5020 rstatus->role = htonl(status->role);
5021 rstatus->reason = status->reason;
5022 rstatus->generation_id = htonll(status->generation_id);
5031 ofputil_decode_role_status(const struct ofp_header *oh,
5032 struct ofputil_role_status *rs)
5036 const struct ofp14_role_status *r;
5038 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5039 raw = ofpraw_pull_assert(&b);
5040 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5043 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5044 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5045 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5046 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5047 return OFPERR_OFPRRFC_BAD_ROLE;
5050 rs->role = ntohl(r->role);
5051 rs->generation_id = ntohll(r->generation_id);
5052 rs->reason = r->reason;
5059 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5060 * matched and a field that must be wildcarded. This function returns a bitmap
5061 * that contains both kinds of fields. */
5062 static struct mf_bitmap
5063 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5065 struct mf_bitmap wc = features->match;
5066 bitmap_not(wc.bm, MFF_N_IDS);
5067 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5071 struct ofp10_wc_map {
5072 enum ofp10_flow_wildcards wc10;
5073 enum mf_field_id mf;
5076 static const struct ofp10_wc_map ofp10_wc_map[] = {
5077 { OFPFW10_IN_PORT, MFF_IN_PORT },
5078 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5079 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5080 { OFPFW10_DL_DST, MFF_ETH_DST},
5081 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5082 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5083 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5084 { OFPFW10_TP_DST, MFF_TCP_DST },
5085 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5086 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5087 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5088 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5092 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5094 const struct ofp10_wc_map *p;
5097 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5098 if (bitmap_is_set(fields->bm, p->mf)) {
5105 static struct mf_bitmap
5106 mf_bitmap_from_of10(ovs_be32 wc10_)
5108 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5109 const struct ofp10_wc_map *p;
5110 uint32_t wc10 = ntohl(wc10_);
5112 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5113 if (wc10 & p->wc10) {
5114 bitmap_set1(fields.bm, p->mf);
5121 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5122 const struct ofputil_table_features *features,
5125 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5126 struct ofp10_table_stats *out;
5128 out = ofpbuf_put_zeros(buf, sizeof *out);
5129 out->table_id = features->table_id;
5130 ovs_strlcpy(out->name, features->name, sizeof out->name);
5131 out->wildcards = mf_bitmap_to_of10(&wc);
5132 out->max_entries = htonl(features->max_entries);
5133 out->active_count = htonl(stats->active_count);
5134 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5135 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5138 struct ofp11_wc_map {
5139 enum ofp11_flow_match_fields wc11;
5140 enum mf_field_id mf;
5143 static const struct ofp11_wc_map ofp11_wc_map[] = {
5144 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5145 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5146 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5147 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5148 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5149 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5150 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5151 { OFPFMF11_TP_DST, MFF_TCP_DST },
5152 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5153 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5154 /* I don't know what OFPFMF11_TYPE means. */
5155 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5156 { OFPFMF11_DL_DST, MFF_ETH_DST },
5157 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5158 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5159 { OFPFMF11_METADATA, MFF_METADATA },
5163 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5165 const struct ofp11_wc_map *p;
5168 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5169 if (bitmap_is_set(fields->bm, p->mf)) {
5176 static struct mf_bitmap
5177 mf_bitmap_from_of11(ovs_be32 wc11_)
5179 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5180 const struct ofp11_wc_map *p;
5181 uint32_t wc11 = ntohl(wc11_);
5183 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5184 if (wc11 & p->wc11) {
5185 bitmap_set1(fields.bm, p->mf);
5192 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5193 const struct ofputil_table_features *features,
5196 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5197 struct ofp11_table_stats *out;
5199 out = ofpbuf_put_zeros(buf, sizeof *out);
5200 out->table_id = features->table_id;
5201 ovs_strlcpy(out->name, features->name, sizeof out->name);
5202 out->wildcards = mf_bitmap_to_of11(&wc);
5203 out->match = mf_bitmap_to_of11(&features->match);
5204 out->instructions = ovsinst_bitmap_to_openflow(
5205 features->nonmiss.instructions, OFP11_VERSION);
5206 out->write_actions = ofpact_bitmap_to_openflow(
5207 features->nonmiss.write.ofpacts, OFP11_VERSION);
5208 out->apply_actions = ofpact_bitmap_to_openflow(
5209 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5210 out->config = htonl(features->miss_config);
5211 out->max_entries = htonl(features->max_entries);
5212 out->active_count = htonl(stats->active_count);
5213 out->lookup_count = htonll(stats->lookup_count);
5214 out->matched_count = htonll(stats->matched_count);
5218 mf_bitmap_to_oxm_bitmap(const struct mf_bitmap *fields,
5219 enum ofp_version version)
5221 uint64_t oxm_bitmap = 0;
5224 BITMAP_FOR_EACH_1 (i, MFF_N_IDS, fields->bm) {
5225 uint32_t oxm = mf_oxm_header(i, version);
5226 uint32_t vendor = NXM_VENDOR(oxm);
5227 int field = NXM_FIELD(oxm);
5229 if (vendor == OFPXMC12_OPENFLOW_BASIC && field < 64) {
5230 oxm_bitmap |= UINT64_C(1) << field;
5233 return htonll(oxm_bitmap);
5236 static struct mf_bitmap
5237 mf_bitmap_from_oxm_bitmap(ovs_be64 oxm_bitmap, enum ofp_version version)
5239 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5241 for (enum mf_field_id id = 0; id < MFF_N_IDS; id++) {
5242 const struct mf_field *f = mf_from_id(id);
5243 uint32_t oxm = f->oxm_header;
5244 uint32_t vendor = NXM_VENDOR(oxm);
5245 int field = NXM_FIELD(oxm);
5247 if (version >= f->oxm_version
5248 && vendor == OFPXMC12_OPENFLOW_BASIC
5250 && oxm_bitmap & htonll(UINT64_C(1) << field)) {
5251 bitmap_set1(fields.bm, id);
5258 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5259 const struct ofputil_table_features *features,
5262 struct ofp12_table_stats *out;
5264 out = ofpbuf_put_zeros(buf, sizeof *out);
5265 out->table_id = features->table_id;
5266 ovs_strlcpy(out->name, features->name, sizeof out->name);
5267 out->match = mf_bitmap_to_oxm_bitmap(&features->match, OFP12_VERSION);
5268 out->wildcards = mf_bitmap_to_oxm_bitmap(&features->wildcard,
5270 out->write_actions = ofpact_bitmap_to_openflow(
5271 features->nonmiss.write.ofpacts, OFP12_VERSION);
5272 out->apply_actions = ofpact_bitmap_to_openflow(
5273 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5274 out->write_setfields = mf_bitmap_to_oxm_bitmap(
5275 &features->nonmiss.write.set_fields, OFP12_VERSION);
5276 out->apply_setfields = mf_bitmap_to_oxm_bitmap(
5277 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5278 out->metadata_match = features->metadata_match;
5279 out->metadata_write = features->metadata_write;
5280 out->instructions = ovsinst_bitmap_to_openflow(
5281 features->nonmiss.instructions, OFP12_VERSION);
5282 out->config = ofputil_table_miss_to_config(features->miss_config,
5284 out->max_entries = htonl(features->max_entries);
5285 out->active_count = htonl(stats->active_count);
5286 out->lookup_count = htonll(stats->lookup_count);
5287 out->matched_count = htonll(stats->matched_count);
5291 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5294 struct ofp13_table_stats *out;
5296 out = ofpbuf_put_zeros(buf, sizeof *out);
5297 out->table_id = stats->table_id;
5298 out->active_count = htonl(stats->active_count);
5299 out->lookup_count = htonll(stats->lookup_count);
5300 out->matched_count = htonll(stats->matched_count);
5304 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5306 return ofpraw_alloc_stats_reply(request, 0);
5310 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5311 const struct ofputil_table_stats *stats,
5312 const struct ofputil_table_features *features)
5314 struct ofp_header *oh = ofpbuf_l2(reply);
5316 ovs_assert(stats->table_id == features->table_id);
5318 switch ((enum ofp_version) oh->version) {
5320 ofputil_put_ofp10_table_stats(stats, features, reply);
5324 ofputil_put_ofp11_table_stats(stats, features, reply);
5328 ofputil_put_ofp12_table_stats(stats, features, reply);
5334 ofputil_put_ofp13_table_stats(stats, reply);
5343 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5344 struct ofputil_table_stats *stats,
5345 struct ofputil_table_features *features)
5347 struct ofp10_table_stats *ots;
5349 ots = ofpbuf_try_pull(msg, sizeof *ots);
5351 return OFPERR_OFPBRC_BAD_LEN;
5354 features->table_id = ots->table_id;
5355 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5356 features->max_entries = ntohl(ots->max_entries);
5357 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5359 stats->table_id = ots->table_id;
5360 stats->active_count = ntohl(ots->active_count);
5361 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5362 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5368 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5369 struct ofputil_table_stats *stats,
5370 struct ofputil_table_features *features)
5372 struct ofp11_table_stats *ots;
5374 ots = ofpbuf_try_pull(msg, sizeof *ots);
5376 return OFPERR_OFPBRC_BAD_LEN;
5379 features->table_id = ots->table_id;
5380 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5381 features->max_entries = ntohl(ots->max_entries);
5382 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5383 ots->instructions, OFP11_VERSION);
5384 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5385 ots->write_actions, OFP11_VERSION);
5386 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5387 ots->write_actions, OFP11_VERSION);
5388 features->miss = features->nonmiss;
5389 features->miss_config = ofputil_table_miss_from_config(ots->config,
5391 features->match = mf_bitmap_from_of11(ots->match);
5392 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5393 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5395 stats->table_id = ots->table_id;
5396 stats->active_count = ntohl(ots->active_count);
5397 stats->lookup_count = ntohll(ots->lookup_count);
5398 stats->matched_count = ntohll(ots->matched_count);
5404 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5405 struct ofputil_table_stats *stats,
5406 struct ofputil_table_features *features)
5408 struct ofp12_table_stats *ots;
5410 ots = ofpbuf_try_pull(msg, sizeof *ots);
5412 return OFPERR_OFPBRC_BAD_LEN;
5415 features->table_id = ots->table_id;
5416 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5417 features->metadata_match = ots->metadata_match;
5418 features->metadata_write = ots->metadata_write;
5419 features->miss_config = ofputil_table_miss_from_config(ots->config,
5421 features->max_entries = ntohl(ots->max_entries);
5423 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5424 ots->instructions, OFP12_VERSION);
5425 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5426 ots->write_actions, OFP12_VERSION);
5427 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5428 ots->apply_actions, OFP12_VERSION);
5429 features->nonmiss.write.set_fields = mf_bitmap_from_oxm_bitmap(
5430 ots->write_setfields, OFP12_VERSION);
5431 features->nonmiss.apply.set_fields = mf_bitmap_from_oxm_bitmap(
5432 ots->apply_setfields, OFP12_VERSION);
5433 features->miss = features->nonmiss;
5435 features->match = mf_bitmap_from_oxm_bitmap(ots->match, OFP12_VERSION);
5436 features->wildcard = mf_bitmap_from_oxm_bitmap(ots->wildcards,
5438 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5440 stats->table_id = ots->table_id;
5441 stats->active_count = ntohl(ots->active_count);
5442 stats->lookup_count = ntohll(ots->lookup_count);
5443 stats->matched_count = ntohll(ots->matched_count);
5449 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
5450 struct ofputil_table_stats *stats,
5451 struct ofputil_table_features *features)
5453 struct ofp13_table_stats *ots;
5455 ots = ofpbuf_try_pull(msg, sizeof *ots);
5457 return OFPERR_OFPBRC_BAD_LEN;
5460 features->table_id = ots->table_id;
5462 stats->table_id = ots->table_id;
5463 stats->active_count = ntohl(ots->active_count);
5464 stats->lookup_count = ntohll(ots->lookup_count);
5465 stats->matched_count = ntohll(ots->matched_count);
5471 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
5472 struct ofputil_table_stats *stats,
5473 struct ofputil_table_features *features)
5475 const struct ofp_header *oh;
5478 ofpraw_pull_assert(msg);
5482 if (!ofpbuf_size(msg)) {
5486 memset(stats, 0, sizeof *stats);
5487 memset(features, 0, sizeof *features);
5489 switch ((enum ofp_version) oh->version) {
5491 return ofputil_decode_ofp10_table_stats(msg, stats, features);
5494 return ofputil_decode_ofp11_table_stats(msg, stats, features);
5497 return ofputil_decode_ofp12_table_stats(msg, stats, features);
5502 return ofputil_decode_ofp13_table_stats(msg, stats, features);
5509 /* ofputil_flow_monitor_request */
5511 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
5512 * ofputil_flow_monitor_request in 'rq'.
5514 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
5515 * message. Calling this function multiple times for a single 'msg' iterates
5516 * through the requests. The caller must initially leave 'msg''s layer
5517 * pointers null and not modify them between calls.
5519 * Returns 0 if successful, EOF if no requests were left in this 'msg',
5520 * otherwise an OFPERR_* value. */
5522 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
5525 struct nx_flow_monitor_request *nfmr;
5529 ofpraw_pull_assert(msg);
5532 if (!ofpbuf_size(msg)) {
5536 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
5538 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
5539 "leftover bytes at end", ofpbuf_size(msg));
5540 return OFPERR_OFPBRC_BAD_LEN;
5543 flags = ntohs(nfmr->flags);
5544 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
5545 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
5546 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
5547 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
5549 return OFPERR_OFPMOFC_BAD_FLAGS;
5552 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
5553 return OFPERR_NXBRC_MUST_BE_ZERO;
5556 rq->id = ntohl(nfmr->id);
5558 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
5559 rq->table_id = nfmr->table_id;
5561 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
5565 ofputil_append_flow_monitor_request(
5566 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
5568 struct nx_flow_monitor_request *nfmr;
5572 if (!ofpbuf_size(msg)) {
5573 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
5576 start_ofs = ofpbuf_size(msg);
5577 ofpbuf_put_zeros(msg, sizeof *nfmr);
5578 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
5580 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
5581 nfmr->id = htonl(rq->id);
5582 nfmr->flags = htons(rq->flags);
5583 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
5584 nfmr->match_len = htons(match_len);
5585 nfmr->table_id = rq->table_id;
5588 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
5589 * into an abstract ofputil_flow_update in 'update'. The caller must have
5590 * initialized update->match to point to space allocated for a match.
5592 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
5593 * actions (except for NXFME_ABBREV, which never includes actions). The caller
5594 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
5595 * will point into the 'ofpacts' buffer.
5597 * Multiple flow updates can be packed into a single OpenFlow message. Calling
5598 * this function multiple times for a single 'msg' iterates through the
5599 * updates. The caller must initially leave 'msg''s layer pointers null and
5600 * not modify them between calls.
5602 * Returns 0 if successful, EOF if no updates were left in this 'msg',
5603 * otherwise an OFPERR_* value. */
5605 ofputil_decode_flow_update(struct ofputil_flow_update *update,
5606 struct ofpbuf *msg, struct ofpbuf *ofpacts)
5608 struct nx_flow_update_header *nfuh;
5609 unsigned int length;
5610 struct ofp_header *oh;
5613 ofpraw_pull_assert(msg);
5616 if (!ofpbuf_size(msg)) {
5620 if (ofpbuf_size(msg) < sizeof(struct nx_flow_update_header)) {
5626 nfuh = ofpbuf_data(msg);
5627 update->event = ntohs(nfuh->event);
5628 length = ntohs(nfuh->length);
5629 if (length > ofpbuf_size(msg) || length % 8) {
5633 if (update->event == NXFME_ABBREV) {
5634 struct nx_flow_update_abbrev *nfua;
5636 if (length != sizeof *nfua) {
5640 nfua = ofpbuf_pull(msg, sizeof *nfua);
5641 update->xid = nfua->xid;
5643 } else if (update->event == NXFME_ADDED
5644 || update->event == NXFME_DELETED
5645 || update->event == NXFME_MODIFIED) {
5646 struct nx_flow_update_full *nfuf;
5647 unsigned int actions_len;
5648 unsigned int match_len;
5651 if (length < sizeof *nfuf) {
5655 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
5656 match_len = ntohs(nfuf->match_len);
5657 if (sizeof *nfuf + match_len > length) {
5661 update->reason = ntohs(nfuf->reason);
5662 update->idle_timeout = ntohs(nfuf->idle_timeout);
5663 update->hard_timeout = ntohs(nfuf->hard_timeout);
5664 update->table_id = nfuf->table_id;
5665 update->cookie = nfuf->cookie;
5666 update->priority = ntohs(nfuf->priority);
5668 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
5673 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
5674 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
5680 update->ofpacts = ofpbuf_data(ofpacts);
5681 update->ofpacts_len = ofpbuf_size(ofpacts);
5684 VLOG_WARN_RL(&bad_ofmsg_rl,
5685 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
5686 ntohs(nfuh->event));
5687 return OFPERR_NXBRC_FM_BAD_EVENT;
5691 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
5692 "leftover bytes at end", ofpbuf_size(msg));
5693 return OFPERR_OFPBRC_BAD_LEN;
5697 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
5699 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
5701 return ntohl(cancel->id);
5705 ofputil_encode_flow_monitor_cancel(uint32_t id)
5707 struct nx_flow_monitor_cancel *nfmc;
5710 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
5711 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
5712 nfmc->id = htonl(id);
5717 ofputil_start_flow_update(struct list *replies)
5721 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
5725 list_push_back(replies, &msg->list_node);
5729 ofputil_append_flow_update(const struct ofputil_flow_update *update,
5730 struct list *replies)
5732 enum ofp_version version = ofpmp_version(replies);
5733 struct nx_flow_update_header *nfuh;
5737 msg = ofpbuf_from_list(list_back(replies));
5738 start_ofs = ofpbuf_size(msg);
5740 if (update->event == NXFME_ABBREV) {
5741 struct nx_flow_update_abbrev *nfua;
5743 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
5744 nfua->xid = update->xid;
5746 struct nx_flow_update_full *nfuf;
5749 ofpbuf_put_zeros(msg, sizeof *nfuf);
5750 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
5751 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
5753 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
5754 nfuf->reason = htons(update->reason);
5755 nfuf->priority = htons(update->priority);
5756 nfuf->idle_timeout = htons(update->idle_timeout);
5757 nfuf->hard_timeout = htons(update->hard_timeout);
5758 nfuf->match_len = htons(match_len);
5759 nfuf->table_id = update->table_id;
5760 nfuf->cookie = update->cookie;
5763 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
5764 nfuh->length = htons(ofpbuf_size(msg) - start_ofs);
5765 nfuh->event = htons(update->event);
5767 ofpmp_postappend(replies, start_ofs);
5771 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
5772 enum ofputil_protocol protocol)
5774 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5778 size = po->ofpacts_len;
5779 if (po->buffer_id == UINT32_MAX) {
5780 size += po->packet_len;
5783 switch (ofp_version) {
5784 case OFP10_VERSION: {
5785 struct ofp10_packet_out *opo;
5788 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
5789 ofpbuf_put_zeros(msg, sizeof *opo);
5790 actions_ofs = ofpbuf_size(msg);
5791 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
5794 opo = ofpbuf_l3(msg);
5795 opo->buffer_id = htonl(po->buffer_id);
5796 opo->in_port = htons(ofp_to_u16(po->in_port));
5797 opo->actions_len = htons(ofpbuf_size(msg) - actions_ofs);
5805 case OFP15_VERSION: {
5806 struct ofp11_packet_out *opo;
5809 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
5810 ofpbuf_put_zeros(msg, sizeof *opo);
5811 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
5813 opo = ofpbuf_l3(msg);
5814 opo->buffer_id = htonl(po->buffer_id);
5815 opo->in_port = ofputil_port_to_ofp11(po->in_port);
5816 opo->actions_len = htons(len);
5824 if (po->buffer_id == UINT32_MAX) {
5825 ofpbuf_put(msg, po->packet, po->packet_len);
5828 ofpmsg_update_length(msg);
5833 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
5835 make_echo_request(enum ofp_version ofp_version)
5837 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
5841 /* Creates and returns an OFPT_ECHO_REPLY message matching the
5842 * OFPT_ECHO_REQUEST message in 'rq'. */
5844 make_echo_reply(const struct ofp_header *rq)
5846 struct ofpbuf rq_buf;
5847 struct ofpbuf *reply;
5849 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
5850 ofpraw_pull_assert(&rq_buf);
5852 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, ofpbuf_size(&rq_buf));
5853 ofpbuf_put(reply, ofpbuf_data(&rq_buf), ofpbuf_size(&rq_buf));
5858 ofputil_encode_barrier_request(enum ofp_version ofp_version)
5862 switch (ofp_version) {
5868 type = OFPRAW_OFPT11_BARRIER_REQUEST;
5872 type = OFPRAW_OFPT10_BARRIER_REQUEST;
5879 return ofpraw_alloc(type, ofp_version, 0);
5883 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
5885 switch (flags & OFPC_FRAG_MASK) {
5886 case OFPC_FRAG_NORMAL: return "normal";
5887 case OFPC_FRAG_DROP: return "drop";
5888 case OFPC_FRAG_REASM: return "reassemble";
5889 case OFPC_FRAG_NX_MATCH: return "nx-match";
5896 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
5898 if (!strcasecmp(s, "normal")) {
5899 *flags = OFPC_FRAG_NORMAL;
5900 } else if (!strcasecmp(s, "drop")) {
5901 *flags = OFPC_FRAG_DROP;
5902 } else if (!strcasecmp(s, "reassemble")) {
5903 *flags = OFPC_FRAG_REASM;
5904 } else if (!strcasecmp(s, "nx-match")) {
5905 *flags = OFPC_FRAG_NX_MATCH;
5912 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
5913 * port number and stores the latter in '*ofp10_port', for the purpose of
5914 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
5915 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
5917 * See the definition of OFP11_MAX for an explanation of the mapping. */
5919 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
5921 uint32_t ofp11_port_h = ntohl(ofp11_port);
5923 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
5924 *ofp10_port = u16_to_ofp(ofp11_port_h);
5926 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
5927 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
5930 *ofp10_port = OFPP_NONE;
5931 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
5932 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
5933 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
5934 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
5935 return OFPERR_OFPBAC_BAD_OUT_PORT;
5939 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
5940 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
5942 * See the definition of OFP11_MAX for an explanation of the mapping. */
5944 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
5946 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
5947 ? ofp_to_u16(ofp10_port)
5948 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
5951 #define OFPUTIL_NAMED_PORTS \
5952 OFPUTIL_NAMED_PORT(IN_PORT) \
5953 OFPUTIL_NAMED_PORT(TABLE) \
5954 OFPUTIL_NAMED_PORT(NORMAL) \
5955 OFPUTIL_NAMED_PORT(FLOOD) \
5956 OFPUTIL_NAMED_PORT(ALL) \
5957 OFPUTIL_NAMED_PORT(CONTROLLER) \
5958 OFPUTIL_NAMED_PORT(LOCAL) \
5959 OFPUTIL_NAMED_PORT(ANY)
5961 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
5962 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
5963 OFPUTIL_NAMED_PORTS \
5964 OFPUTIL_NAMED_PORT(NONE)
5966 /* Stores the port number represented by 's' into '*portp'. 's' may be an
5967 * integer or, for reserved ports, the standard OpenFlow name for the port
5970 * Returns true if successful, false if 's' is not a valid OpenFlow port number
5971 * or name. The caller should issue an error message in this case, because
5972 * this function usually does not. (This gives the caller an opportunity to
5973 * look up the port name another way, e.g. by contacting the switch and listing
5974 * the names of all its ports).
5976 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
5977 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
5978 * range as described in include/openflow/openflow-1.1.h. */
5980 ofputil_port_from_string(const char *s, ofp_port_t *portp)
5982 unsigned int port32; /* int is at least 32 bits wide. */
5985 VLOG_WARN("Negative value %s is not a valid port number.", s);
5989 if (str_to_uint(s, 10, &port32)) {
5990 if (port32 < ofp_to_u16(OFPP_MAX)) {
5992 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
5993 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
5994 "be translated to %u when talking to an OF1.1 or "
5995 "later controller", port32, port32 + OFPP11_OFFSET);
5996 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
5997 char name[OFP_MAX_PORT_NAME_LEN];
5999 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6000 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6001 "for compatibility with OpenFlow 1.1 and later",
6003 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6004 VLOG_WARN("port %u is outside the supported range 0 through "
6005 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6006 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6009 port32 -= OFPP11_OFFSET;
6012 *portp = u16_to_ofp(port32);
6019 static const struct pair pairs[] = {
6020 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6021 OFPUTIL_NAMED_PORTS_WITH_NONE
6022 #undef OFPUTIL_NAMED_PORT
6024 const struct pair *p;
6026 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6027 if (!strcasecmp(s, p->name)) {
6036 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6037 * Most ports' string representation is just the port number, but for special
6038 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6040 ofputil_format_port(ofp_port_t port, struct ds *s)
6042 char name[OFP_MAX_PORT_NAME_LEN];
6044 ofputil_port_to_string(port, name, sizeof name);
6045 ds_put_cstr(s, name);
6048 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6049 * representation of OpenFlow port number 'port'. Most ports are represented
6050 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6051 * by name, e.g. "LOCAL". */
6053 ofputil_port_to_string(ofp_port_t port,
6054 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6057 #define OFPUTIL_NAMED_PORT(NAME) \
6059 ovs_strlcpy(namebuf, #NAME, bufsize); \
6062 #undef OFPUTIL_NAMED_PORT
6065 snprintf(namebuf, bufsize, "%"PRIu16, port);
6070 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6071 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6072 * (either "ANY" or "ALL").
6074 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6077 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6079 if (!strcasecmp(s, "any")) {
6080 *group_idp = OFPG11_ANY;
6081 } else if (!strcasecmp(s, "all")) {
6082 *group_idp = OFPG11_ALL;
6083 } else if (!str_to_uint(s, 10, group_idp)) {
6084 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6085 "32-bit nonnegative integers or the keywords ANY or "
6093 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6094 * Most groups' string representation is just the number, but for special
6095 * groups, e.g. OFPG11_ALL, it is the name, e.g. "ALL". */
6097 ofputil_format_group(uint32_t group_id, struct ds *s)
6099 char name[MAX_GROUP_NAME_LEN];
6101 ofputil_group_to_string(group_id, name, sizeof name);
6102 ds_put_cstr(s, name);
6106 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6107 * representation of OpenFlow group ID 'group_id'. Most group are represented
6108 * as just their number, but special groups, e.g. OFPG11_ALL, are represented
6109 * by name, e.g. "ALL". */
6111 ofputil_group_to_string(uint32_t group_id,
6112 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6116 ovs_strlcpy(namebuf, "ALL", bufsize);
6120 ovs_strlcpy(namebuf, "ANY", bufsize);
6124 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6129 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6130 * 'ofp_version', tries to pull the first element from the array. If
6131 * successful, initializes '*pp' with an abstract representation of the
6132 * port and returns 0. If no ports remain to be decoded, returns EOF.
6133 * On an error, returns a positive OFPERR_* value. */
6135 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6136 struct ofputil_phy_port *pp)
6138 memset(pp, 0, sizeof *pp);
6140 switch (ofp_version) {
6141 case OFP10_VERSION: {
6142 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6143 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6147 case OFP13_VERSION: {
6148 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6149 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6153 return ofpbuf_size(b) ? ofputil_pull_ofp14_port(pp, b) : EOF;
6159 /* ofp-util.def lists the mapping from names to action. */
6160 static const char *const names[OFPUTIL_N_ACTIONS] = {
6162 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME,
6163 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
6164 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
6165 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
6166 #include "ofp-util.def"
6169 /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if
6170 * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1
6171 * if 'name' is not the name of any action. */
6173 ofputil_action_code_from_name(const char *name)
6175 const char *const *p;
6177 for (p = names; p < &names[ARRAY_SIZE(names)]; p++) {
6178 if (*p && !strcasecmp(name, *p)) {
6185 /* Returns name corresponding to the 'enum ofputil_action_code',
6186 * or "Unkonwn action", if the name is not available. */
6188 ofputil_action_name_from_code(enum ofputil_action_code code)
6190 return code < (int)OFPUTIL_N_ACTIONS && names[code] ? names[code]
6194 enum ofputil_action_code
6195 ofputil_action_code_from_ofp13_action(enum ofp13_action_type type)
6199 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6201 return OFPUTIL_##ENUM;
6202 #include "ofp-util.def"
6205 return OFPUTIL_ACTION_INVALID;
6209 /* Appends an action of the type specified by 'code' to 'buf' and returns the
6210 * action. Initializes the parts of 'action' that identify it as having type
6211 * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that
6212 * have variable length, the length used and cleared is that of struct
6215 ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf)
6218 case OFPUTIL_ACTION_INVALID:
6219 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) case OFPUTIL_##ENUM:
6220 #include "ofp-util.def"
6223 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
6224 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
6225 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6226 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
6227 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6228 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
6229 #include "ofp-util.def"
6234 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
6236 ofputil_init_##ENUM(struct STRUCT *s) \
6238 memset(s, 0, sizeof *s); \
6239 s->type = htons(ENUM); \
6240 s->len = htons(sizeof *s); \
6244 ofputil_put_##ENUM(struct ofpbuf *buf) \
6246 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
6247 ofputil_init_##ENUM(s); \
6250 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6251 OFPAT10_ACTION(ENUM, STRUCT, NAME)
6252 #define OFPAT13_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6253 OFPAT10_ACTION(ENUM, STRUCT, NAME)
6254 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
6256 ofputil_init_##ENUM(struct STRUCT *s) \
6258 memset(s, 0, sizeof *s); \
6259 s->type = htons(OFPAT10_VENDOR); \
6260 s->len = htons(sizeof *s); \
6261 s->vendor = htonl(NX_VENDOR_ID); \
6262 s->subtype = htons(ENUM); \
6266 ofputil_put_##ENUM(struct ofpbuf *buf) \
6268 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
6269 ofputil_init_##ENUM(s); \
6272 #include "ofp-util.def"
6275 ofputil_normalize_match__(struct match *match, bool may_log)
6278 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6279 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6280 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6281 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6282 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6283 MAY_ARP_THA = 1 << 5, /* arp_tha */
6284 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6285 MAY_ND_TARGET = 1 << 7, /* nd_target */
6286 MAY_MPLS = 1 << 8, /* mpls label and tc */
6289 struct flow_wildcards wc;
6291 /* Figure out what fields may be matched. */
6292 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6293 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6294 if (match->flow.nw_proto == IPPROTO_TCP ||
6295 match->flow.nw_proto == IPPROTO_UDP ||
6296 match->flow.nw_proto == IPPROTO_SCTP ||
6297 match->flow.nw_proto == IPPROTO_ICMP) {
6298 may_match |= MAY_TP_ADDR;
6300 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6301 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6302 if (match->flow.nw_proto == IPPROTO_TCP ||
6303 match->flow.nw_proto == IPPROTO_UDP ||
6304 match->flow.nw_proto == IPPROTO_SCTP) {
6305 may_match |= MAY_TP_ADDR;
6306 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6307 may_match |= MAY_TP_ADDR;
6308 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6309 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6310 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6311 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6314 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6315 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6316 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6317 } else if (eth_type_mpls(match->flow.dl_type)) {
6318 may_match = MAY_MPLS;
6323 /* Clear the fields that may not be matched. */
6325 if (!(may_match & MAY_NW_ADDR)) {
6326 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6328 if (!(may_match & MAY_TP_ADDR)) {
6329 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6331 if (!(may_match & MAY_NW_PROTO)) {
6332 wc.masks.nw_proto = 0;
6334 if (!(may_match & MAY_IPVx)) {
6335 wc.masks.nw_tos = 0;
6336 wc.masks.nw_ttl = 0;
6338 if (!(may_match & MAY_ARP_SHA)) {
6339 memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN);
6341 if (!(may_match & MAY_ARP_THA)) {
6342 memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN);
6344 if (!(may_match & MAY_IPV6)) {
6345 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6346 wc.masks.ipv6_label = htonl(0);
6348 if (!(may_match & MAY_ND_TARGET)) {
6349 wc.masks.nd_target = in6addr_any;
6351 if (!(may_match & MAY_MPLS)) {
6352 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6355 /* Log any changes. */
6356 if (!flow_wildcards_equal(&wc, &match->wc)) {
6357 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6358 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6361 match_zero_wildcarded_fields(match);
6364 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6365 VLOG_INFO("normalization changed ofp_match, details:");
6366 VLOG_INFO(" pre: %s", pre);
6367 VLOG_INFO("post: %s", post);
6374 /* "Normalizes" the wildcards in 'match'. That means:
6376 * 1. If the type of level N is known, then only the valid fields for that
6377 * level may be specified. For example, ARP does not have a TOS field,
6378 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6379 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6380 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6383 * 2. If the type of level N is not known (or not understood by Open
6384 * vSwitch), then no fields at all for that level may be specified. For
6385 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6386 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6389 * If this function changes 'match', it logs a rate-limited informational
6392 ofputil_normalize_match(struct match *match)
6394 ofputil_normalize_match__(match, true);
6397 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6398 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6399 * sense for use on flows received from elsewhere (so that a bug in the program
6400 * that sent them can be reported and corrected). */
6402 ofputil_normalize_match_quiet(struct match *match)
6404 ofputil_normalize_match__(match, false);
6407 /* Parses a key or a key-value pair from '*stringp'.
6409 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6410 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6411 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6412 * are substrings of '*stringp' created by replacing some of its bytes by null
6413 * terminators. Returns true.
6415 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6416 * NULL and returns false. */
6418 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6420 char *pos, *key, *value;
6424 pos += strspn(pos, ", \t\r\n");
6426 *keyp = *valuep = NULL;
6431 key_len = strcspn(pos, ":=(, \t\r\n");
6432 if (key[key_len] == ':' || key[key_len] == '=') {
6433 /* The value can be separated by a colon. */
6436 value = key + key_len + 1;
6437 value_len = strcspn(value, ", \t\r\n");
6438 pos = value + value_len + (value[value_len] != '\0');
6439 value[value_len] = '\0';
6440 } else if (key[key_len] == '(') {
6441 /* The value can be surrounded by balanced parentheses. The outermost
6442 * set of parentheses is removed. */
6446 value = key + key_len + 1;
6447 for (value_len = 0; level > 0; value_len++) {
6448 switch (value[value_len]) {
6462 value[value_len - 1] = '\0';
6463 pos = value + value_len;
6465 /* There might be no value at all. */
6466 value = key + key_len; /* Will become the empty string below. */
6467 pos = key + key_len + (key[key_len] != '\0');
6469 key[key_len] = '\0';
6477 /* Encode a dump ports request for 'port', the encoded message
6478 * will be for Open Flow version 'ofp_version'. Returns message
6479 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6481 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6483 struct ofpbuf *request;
6485 switch (ofp_version) {
6486 case OFP10_VERSION: {
6487 struct ofp10_port_stats_request *req;
6488 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6489 req = ofpbuf_put_zeros(request, sizeof *req);
6490 req->port_no = htons(ofp_to_u16(port));
6497 case OFP15_VERSION: {
6498 struct ofp11_port_stats_request *req;
6499 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6500 req = ofpbuf_put_zeros(request, sizeof *req);
6501 req->port_no = ofputil_port_to_ofp11(port);
6512 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6513 struct ofp10_port_stats *ps10)
6515 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6516 memset(ps10->pad, 0, sizeof ps10->pad);
6517 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6518 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6519 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6520 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6521 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6522 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6523 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6524 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6525 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6526 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6527 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6528 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6532 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6533 struct ofp11_port_stats *ps11)
6535 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6536 memset(ps11->pad, 0, sizeof ps11->pad);
6537 ps11->rx_packets = htonll(ops->stats.rx_packets);
6538 ps11->tx_packets = htonll(ops->stats.tx_packets);
6539 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6540 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6541 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6542 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6543 ps11->rx_errors = htonll(ops->stats.rx_errors);
6544 ps11->tx_errors = htonll(ops->stats.tx_errors);
6545 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6546 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
6547 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6548 ps11->collisions = htonll(ops->stats.collisions);
6552 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
6553 struct ofp13_port_stats *ps13)
6555 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
6556 ps13->duration_sec = htonl(ops->duration_sec);
6557 ps13->duration_nsec = htonl(ops->duration_nsec);
6561 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
6562 struct list *replies)
6564 struct ofp14_port_stats_prop_ethernet *eth;
6565 struct ofp14_port_stats *ps14;
6566 struct ofpbuf *reply;
6568 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
6570 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
6571 ps14->length = htons(sizeof *ps14 + sizeof *eth);
6572 memset(ps14->pad, 0, sizeof ps14->pad);
6573 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
6574 ps14->duration_sec = htonl(ops->duration_sec);
6575 ps14->duration_nsec = htonl(ops->duration_nsec);
6576 ps14->rx_packets = htonll(ops->stats.rx_packets);
6577 ps14->tx_packets = htonll(ops->stats.tx_packets);
6578 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
6579 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
6580 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
6581 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
6582 ps14->rx_errors = htonll(ops->stats.rx_errors);
6583 ps14->tx_errors = htonll(ops->stats.tx_errors);
6585 eth = ofpbuf_put_uninit(reply, sizeof *eth);
6586 eth->type = htons(OFPPSPT14_ETHERNET);
6587 eth->length = htons(sizeof *eth);
6588 memset(eth->pad, 0, sizeof eth->pad);
6589 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6590 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
6591 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6592 eth->collisions = htonll(ops->stats.collisions);
6595 /* Encode a ports stat for 'ops' and append it to 'replies'. */
6597 ofputil_append_port_stat(struct list *replies,
6598 const struct ofputil_port_stats *ops)
6600 switch (ofpmp_version(replies)) {
6601 case OFP13_VERSION: {
6602 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6603 ofputil_port_stats_to_ofp13(ops, reply);
6607 case OFP11_VERSION: {
6608 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6609 ofputil_port_stats_to_ofp11(ops, reply);
6613 case OFP10_VERSION: {
6614 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
6615 ofputil_port_stats_to_ofp10(ops, reply);
6621 ofputil_append_ofp14_port_stats(ops, replies);
6630 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
6631 const struct ofp10_port_stats *ps10)
6633 memset(ops, 0, sizeof *ops);
6635 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
6636 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
6637 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
6638 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
6639 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
6640 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
6641 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
6642 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
6643 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
6644 ops->stats.rx_frame_errors =
6645 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
6646 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
6647 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
6648 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
6649 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
6655 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
6656 const struct ofp11_port_stats *ps11)
6660 memset(ops, 0, sizeof *ops);
6661 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
6666 ops->stats.rx_packets = ntohll(ps11->rx_packets);
6667 ops->stats.tx_packets = ntohll(ps11->tx_packets);
6668 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
6669 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
6670 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
6671 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
6672 ops->stats.rx_errors = ntohll(ps11->rx_errors);
6673 ops->stats.tx_errors = ntohll(ps11->tx_errors);
6674 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
6675 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
6676 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
6677 ops->stats.collisions = ntohll(ps11->collisions);
6678 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
6684 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
6685 const struct ofp13_port_stats *ps13)
6687 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
6689 ops->duration_sec = ntohl(ps13->duration_sec);
6690 ops->duration_nsec = ntohl(ps13->duration_nsec);
6696 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
6697 struct ofputil_port_stats *ops)
6699 const struct ofp14_port_stats_prop_ethernet *eth = ofpbuf_data(payload);
6701 if (ofpbuf_size(payload) != sizeof *eth) {
6702 return OFPERR_OFPBPC_BAD_LEN;
6705 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
6706 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
6707 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
6708 ops->stats.collisions = ntohll(eth->collisions);
6714 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
6717 const struct ofp14_port_stats *ps14;
6718 struct ofpbuf properties;
6722 ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
6724 return OFPERR_OFPBRC_BAD_LEN;
6727 len = ntohs(ps14->length);
6728 if (len < sizeof *ps14 || len - sizeof *ps14 > ofpbuf_size(msg)) {
6729 return OFPERR_OFPBRC_BAD_LEN;
6731 len -= sizeof *ps14;
6732 ofpbuf_use_const(&properties, ofpbuf_pull(msg, len), len);
6734 error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
6739 ops->duration_sec = ntohl(ps14->duration_sec);
6740 ops->duration_nsec = ntohl(ps14->duration_nsec);
6741 ops->stats.rx_packets = ntohll(ps14->rx_packets);
6742 ops->stats.tx_packets = ntohll(ps14->tx_packets);
6743 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
6744 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
6745 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
6746 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
6747 ops->stats.rx_errors = ntohll(ps14->rx_errors);
6748 ops->stats.tx_errors = ntohll(ps14->tx_errors);
6749 ops->stats.rx_frame_errors = UINT64_MAX;
6750 ops->stats.rx_over_errors = UINT64_MAX;
6751 ops->stats.rx_crc_errors = UINT64_MAX;
6752 ops->stats.collisions = UINT64_MAX;
6754 while (ofpbuf_size(&properties) > 0) {
6755 struct ofpbuf payload;
6759 error = ofputil_pull_property(&properties, &payload, &type);
6765 case OFPPSPT14_ETHERNET:
6766 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
6770 log_property(true, "unknown port stats property %"PRIu16, type);
6783 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
6786 ofputil_count_port_stats(const struct ofp_header *oh)
6788 struct ofputil_port_stats ps;
6792 ofpbuf_use_const(&b, oh, ntohs(oh->length));
6793 ofpraw_pull_assert(&b);
6794 while (!ofputil_decode_port_stats(&ps, &b)) {
6800 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
6801 * ofputil_port_stats in 'ps'.
6803 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
6804 * message. Calling this function multiple times for a single 'msg' iterates
6805 * through the replies. The caller must initially leave 'msg''s layer pointers
6806 * null and not modify them between calls.
6808 * Returns 0 if successful, EOF if no replies were left in this 'msg',
6809 * otherwise a positive errno value. */
6811 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
6817 ? ofpraw_decode(&raw, msg->frame)
6818 : ofpraw_pull(&raw, msg));
6823 if (!ofpbuf_size(msg)) {
6825 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
6826 return ofputil_pull_ofp14_port_stats(ps, msg);
6827 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
6828 const struct ofp13_port_stats *ps13;
6830 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
6834 return ofputil_port_stats_from_ofp13(ps, ps13);
6835 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
6836 const struct ofp11_port_stats *ps11;
6838 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
6842 return ofputil_port_stats_from_ofp11(ps, ps11);
6843 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
6844 const struct ofp10_port_stats *ps10;
6846 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
6850 return ofputil_port_stats_from_ofp10(ps, ps10);
6856 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
6857 "bytes at end", ofpbuf_size(msg));
6858 return OFPERR_OFPBRC_BAD_LEN;
6861 /* Parse a port status request message into a 16 bit OpenFlow 1.0
6862 * port number and stores the latter in '*ofp10_port'.
6863 * Returns 0 if successful, otherwise an OFPERR_* number. */
6865 ofputil_decode_port_stats_request(const struct ofp_header *request,
6866 ofp_port_t *ofp10_port)
6868 switch ((enum ofp_version)request->version) {
6873 case OFP11_VERSION: {
6874 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
6875 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
6878 case OFP10_VERSION: {
6879 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
6880 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
6889 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
6891 ofputil_bucket_list_destroy(struct list *buckets)
6893 struct ofputil_bucket *bucket, *next_bucket;
6895 LIST_FOR_EACH_SAFE (bucket, next_bucket, list_node, buckets) {
6896 list_remove(&bucket->list_node);
6897 free(bucket->ofpacts);
6902 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
6903 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
6906 * Group statistics include packet and byte counts for each group. */
6908 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
6911 struct ofpbuf *request;
6913 switch (ofp_version) {
6915 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
6916 "(\'-O OpenFlow11\')");
6921 case OFP15_VERSION: {
6922 struct ofp11_group_stats_request *req;
6923 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
6924 req = ofpbuf_put_zeros(request, sizeof *req);
6925 req->group_id = htonl(group_id);
6935 /* Decodes the OpenFlow group description request in 'oh', returning the group
6936 * whose description is requested, or OFPG_ALL if stats for all groups was
6939 ofputil_decode_group_desc_request(const struct ofp_header *oh)
6941 struct ofpbuf request;
6944 ofpbuf_use_const(&request, oh, ntohs(oh->length));
6945 raw = ofpraw_pull_assert(&request);
6946 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
6948 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
6949 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
6950 return ntohl(*group_id);
6956 /* Returns an OpenFlow group description request for OpenFlow version
6957 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
6958 * request stats for all groups (OpenFlow 1.4 and earlier always request all
6961 * Group descriptions include the bucket and action configuration for each
6964 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
6967 struct ofpbuf *request;
6970 switch (ofp_version) {
6972 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
6973 "(\'-O OpenFlow11\')");
6978 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
6982 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
6984 gid = htonl(group_id);
6985 ofpbuf_put(request, &gid, sizeof gid);
6995 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
6996 struct ofp11_bucket_counter bucket_cnts[])
7000 for (i = 0; i < gs->n_buckets; i++) {
7001 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7002 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7007 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7008 struct ofp11_group_stats *gs11, size_t length,
7009 struct ofp11_bucket_counter bucket_cnts[])
7011 memset(gs11, 0, sizeof *gs11);
7012 gs11->length = htons(length);
7013 gs11->group_id = htonl(gs->group_id);
7014 gs11->ref_count = htonl(gs->ref_count);
7015 gs11->packet_count = htonll(gs->packet_count);
7016 gs11->byte_count = htonll(gs->byte_count);
7017 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7021 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7022 struct ofp13_group_stats *gs13, size_t length,
7023 struct ofp11_bucket_counter bucket_cnts[])
7025 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7026 gs13->duration_sec = htonl(gs->duration_sec);
7027 gs13->duration_nsec = htonl(gs->duration_nsec);
7031 /* Encodes 'gs' properly for the format of the list of group statistics
7032 * replies already begun in 'replies' and appends it to the list. 'replies'
7033 * must have originally been initialized with ofpmp_init(). */
7035 ofputil_append_group_stats(struct list *replies,
7036 const struct ofputil_group_stats *gs)
7038 size_t bucket_counter_size;
7039 struct ofp11_bucket_counter *bucket_counters;
7042 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7044 switch (ofpmp_version(replies)) {
7046 case OFP12_VERSION:{
7047 struct ofp11_group_stats *gs11;
7049 length = sizeof *gs11 + bucket_counter_size;
7050 gs11 = ofpmp_append(replies, length);
7051 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7052 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7058 case OFP15_VERSION: {
7059 struct ofp13_group_stats *gs13;
7061 length = sizeof *gs13 + bucket_counter_size;
7062 gs13 = ofpmp_append(replies, length);
7063 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7064 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7073 /* Returns an OpenFlow group features request for OpenFlow version
7076 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7078 struct ofpbuf *request = NULL;
7080 switch (ofp_version) {
7083 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7084 "(\'-O OpenFlow12\')");
7089 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7099 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7100 * group features request 'request'. */
7102 ofputil_encode_group_features_reply(
7103 const struct ofputil_group_features *features,
7104 const struct ofp_header *request)
7106 struct ofp12_group_features_stats *ogf;
7107 struct ofpbuf *reply;
7110 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7111 request->version, request->xid, 0);
7112 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7113 ogf->types = htonl(features->types);
7114 ogf->capabilities = htonl(features->capabilities);
7115 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7116 ogf->max_groups[i] = htonl(features->max_groups[i]);
7117 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7124 /* Decodes group features reply 'oh' into 'features'. */
7126 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7127 struct ofputil_group_features *features)
7129 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7132 features->types = ntohl(ogf->types);
7133 features->capabilities = ntohl(ogf->capabilities);
7134 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7135 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7136 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7137 ogf->actions[i], oh->version);
7141 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7142 * group ID and stores the latter in '*group_id'.
7143 * Returns 0 if successful, otherwise an OFPERR_* number. */
7145 ofputil_decode_group_stats_request(const struct ofp_header *request,
7148 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7149 *group_id = ntohl(gsr11->group_id);
7153 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7154 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7155 * caller to eventually free.
7157 * Multiple group stats replies can be packed into a single OpenFlow message.
7158 * Calling this function multiple times for a single 'msg' iterates through the
7159 * replies. The caller must initially leave 'msg''s layer pointers null and
7160 * not modify them between calls.
7162 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7163 * otherwise a positive errno value. */
7165 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7166 struct ofputil_group_stats *gs)
7168 struct ofp11_bucket_counter *obc;
7169 struct ofp11_group_stats *ogs11;
7176 gs->bucket_stats = NULL;
7178 ? ofpraw_decode(&raw, msg->frame)
7179 : ofpraw_pull(&raw, msg));
7184 if (!ofpbuf_size(msg)) {
7188 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7189 base_len = sizeof *ogs11;
7190 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7191 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7192 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7193 struct ofp13_group_stats *ogs13;
7195 base_len = sizeof *ogs13;
7196 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7199 gs->duration_sec = ntohl(ogs13->duration_sec);
7200 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7209 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7210 ofpraw_get_name(raw), ofpbuf_size(msg));
7211 return OFPERR_OFPBRC_BAD_LEN;
7213 length = ntohs(ogs11->length);
7214 if (length < sizeof base_len) {
7215 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7216 ofpraw_get_name(raw), length);
7217 return OFPERR_OFPBRC_BAD_LEN;
7220 gs->group_id = ntohl(ogs11->group_id);
7221 gs->ref_count = ntohl(ogs11->ref_count);
7222 gs->packet_count = ntohll(ogs11->packet_count);
7223 gs->byte_count = ntohll(ogs11->byte_count);
7225 gs->n_buckets = (length - base_len) / sizeof *obc;
7226 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7228 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7229 ofpraw_get_name(raw), ofpbuf_size(msg));
7230 return OFPERR_OFPBRC_BAD_LEN;
7233 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7234 for (i = 0; i < gs->n_buckets; i++) {
7235 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7236 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7242 /* Appends a group stats reply that contains the data in 'gds' to those already
7243 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7244 * initialized with ofpmp_init(). */
7246 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7247 struct list *buckets,
7248 struct list *replies)
7250 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7251 enum ofp_version version = ofpmp_version(replies);
7252 struct ofp11_group_desc_stats *ogds;
7253 struct ofputil_bucket *bucket;
7256 start_ogds = ofpbuf_size(reply);
7257 ofpbuf_put_zeros(reply, sizeof *ogds);
7258 LIST_FOR_EACH (bucket, list_node, buckets) {
7259 struct ofp11_bucket *ob;
7262 start_ob = ofpbuf_size(reply);
7263 ofpbuf_put_zeros(reply, sizeof *ob);
7264 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7266 ob = ofpbuf_at_assert(reply, start_ob, sizeof *ob);
7267 ob->len = htons(ofpbuf_size(reply) - start_ob);
7268 ob->weight = htons(bucket->weight);
7269 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7270 ob->watch_group = htonl(bucket->watch_group);
7272 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7273 ogds->length = htons(ofpbuf_size(reply) - start_ogds);
7274 ogds->type = gds->type;
7275 ogds->group_id = htonl(gds->group_id);
7277 ofpmp_postappend(replies, start_ogds);
7281 ofputil_pull_buckets(struct ofpbuf *msg, size_t buckets_length,
7282 enum ofp_version version, struct list *buckets)
7284 struct ofp11_bucket *ob;
7287 while (buckets_length > 0) {
7288 struct ofputil_bucket *bucket;
7289 struct ofpbuf ofpacts;
7293 ob = (buckets_length >= sizeof *ob
7294 ? ofpbuf_try_pull(msg, sizeof *ob)
7297 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
7299 return OFPERR_OFPGMFC_BAD_BUCKET;
7302 ob_len = ntohs(ob->len);
7303 if (ob_len < sizeof *ob) {
7304 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7305 "%"PRIuSIZE" is not valid", ob_len);
7306 return OFPERR_OFPGMFC_BAD_BUCKET;
7307 } else if (ob_len > buckets_length) {
7308 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7309 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
7310 ob_len, buckets_length);
7311 return OFPERR_OFPGMFC_BAD_BUCKET;
7313 buckets_length -= ob_len;
7315 ofpbuf_init(&ofpacts, 0);
7316 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
7319 ofpbuf_uninit(&ofpacts);
7320 ofputil_bucket_list_destroy(buckets);
7324 bucket = xzalloc(sizeof *bucket);
7325 bucket->weight = ntohs(ob->weight);
7326 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
7328 ofpbuf_uninit(&ofpacts);
7329 ofputil_bucket_list_destroy(buckets);
7330 return OFPERR_OFPGMFC_BAD_WATCH;
7332 bucket->watch_group = ntohl(ob->watch_group);
7333 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
7334 bucket->ofpacts_len = ofpbuf_size(&ofpacts);
7335 list_push_back(buckets, &bucket->list_node);
7341 /* Converts a group description reply in 'msg' into an abstract
7342 * ofputil_group_desc in 'gd'.
7344 * Multiple group description replies can be packed into a single OpenFlow
7345 * message. Calling this function multiple times for a single 'msg' iterates
7346 * through the replies. The caller must initially leave 'msg''s layer pointers
7347 * null and not modify them between calls.
7349 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7350 * otherwise a positive errno value. */
7352 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
7353 struct ofpbuf *msg, enum ofp_version version)
7355 struct ofp11_group_desc_stats *ogds;
7359 ofpraw_pull_assert(msg);
7362 if (!ofpbuf_size(msg)) {
7366 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
7368 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
7369 "leftover bytes at end", ofpbuf_size(msg));
7370 return OFPERR_OFPBRC_BAD_LEN;
7372 gd->type = ogds->type;
7373 gd->group_id = ntohl(ogds->group_id);
7375 length = ntohs(ogds->length);
7376 if (length < sizeof *ogds || length - sizeof *ogds > ofpbuf_size(msg)) {
7377 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
7378 "length %"PRIuSIZE, length);
7379 return OFPERR_OFPBRC_BAD_LEN;
7382 return ofputil_pull_buckets(msg, length - sizeof *ogds, version,
7386 /* Converts abstract group mod 'gm' into a message for OpenFlow version
7387 * 'ofp_version' and returns the message. */
7389 ofputil_encode_group_mod(enum ofp_version ofp_version,
7390 const struct ofputil_group_mod *gm)
7393 struct ofp11_group_mod *ogm;
7395 size_t start_bucket;
7396 struct ofputil_bucket *bucket;
7397 struct ofp11_bucket *ob;
7399 switch (ofp_version) {
7400 case OFP10_VERSION: {
7401 if (gm->command == OFPGC11_ADD) {
7402 ovs_fatal(0, "add-group needs OpenFlow 1.1 or later "
7403 "(\'-O OpenFlow11\')");
7404 } else if (gm->command == OFPGC11_MODIFY) {
7405 ovs_fatal(0, "mod-group needs OpenFlow 1.1 or later "
7406 "(\'-O OpenFlow11\')");
7408 ovs_fatal(0, "del-groups needs OpenFlow 1.1 or later "
7409 "(\'-O OpenFlow11\')");
7418 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
7419 start_ogm = ofpbuf_size(b);
7420 ofpbuf_put_zeros(b, sizeof *ogm);
7422 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
7423 start_bucket = ofpbuf_size(b);
7424 ofpbuf_put_zeros(b, sizeof *ob);
7425 if (bucket->ofpacts && bucket->ofpacts_len) {
7426 ofpacts_put_openflow_actions(bucket->ofpacts,
7427 bucket->ofpacts_len, b,
7430 ob = ofpbuf_at_assert(b, start_bucket, sizeof *ob);
7431 ob->len = htons(ofpbuf_size(b) - start_bucket);;
7432 ob->weight = htons(bucket->weight);
7433 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7434 ob->watch_group = htonl(bucket->watch_group);
7436 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
7437 ogm->command = htons(gm->command);
7438 ogm->type = gm->type;
7439 ogm->group_id = htonl(gm->group_id);
7450 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
7451 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
7453 ofputil_decode_group_mod(const struct ofp_header *oh,
7454 struct ofputil_group_mod *gm)
7456 const struct ofp11_group_mod *ogm;
7458 struct ofputil_bucket *bucket;
7461 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
7462 ofpraw_pull_assert(&msg);
7464 ogm = ofpbuf_pull(&msg, sizeof *ogm);
7465 gm->command = ntohs(ogm->command);
7466 gm->type = ogm->type;
7467 gm->group_id = ntohl(ogm->group_id);
7469 err = ofputil_pull_buckets(&msg, ofpbuf_size(&msg), oh->version, &gm->buckets);
7474 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
7477 case OFPGT11_INDIRECT:
7478 if (ofputil_bucket_has_liveness(bucket)) {
7479 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
7482 case OFPGT11_SELECT:
7485 if (!ofputil_bucket_has_liveness(bucket)) {
7486 return OFPERR_OFPGMFC_INVALID_GROUP;
7497 /* Parse a queue status request message into 'oqsr'.
7498 * Returns 0 if successful, otherwise an OFPERR_* number. */
7500 ofputil_decode_queue_stats_request(const struct ofp_header *request,
7501 struct ofputil_queue_stats_request *oqsr)
7503 switch ((enum ofp_version)request->version) {
7508 case OFP11_VERSION: {
7509 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
7510 oqsr->queue_id = ntohl(qsr11->queue_id);
7511 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
7514 case OFP10_VERSION: {
7515 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
7516 oqsr->queue_id = ntohl(qsr10->queue_id);
7517 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
7518 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
7519 if (oqsr->port_no == OFPP_ALL) {
7520 oqsr->port_no = OFPP_ANY;
7530 /* Encode a queue statsrequest for 'oqsr', the encoded message
7531 * will be fore Open Flow version 'ofp_version'. Returns message
7532 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
7534 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
7535 const struct ofputil_queue_stats_request *oqsr)
7537 struct ofpbuf *request;
7539 switch (ofp_version) {
7544 case OFP15_VERSION: {
7545 struct ofp11_queue_stats_request *req;
7546 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
7547 req = ofpbuf_put_zeros(request, sizeof *req);
7548 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
7549 req->queue_id = htonl(oqsr->queue_id);
7552 case OFP10_VERSION: {
7553 struct ofp10_queue_stats_request *req;
7554 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
7555 req = ofpbuf_put_zeros(request, sizeof *req);
7556 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
7557 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
7558 ? OFPP_ALL : oqsr->port_no));
7559 req->queue_id = htonl(oqsr->queue_id);
7569 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
7572 ofputil_count_queue_stats(const struct ofp_header *oh)
7574 struct ofputil_queue_stats qs;
7578 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7579 ofpraw_pull_assert(&b);
7580 while (!ofputil_decode_queue_stats(&qs, &b)) {
7587 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
7588 const struct ofp10_queue_stats *qs10)
7590 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
7591 oqs->queue_id = ntohl(qs10->queue_id);
7592 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
7593 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
7594 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
7595 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
7601 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
7602 const struct ofp11_queue_stats *qs11)
7606 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
7611 oqs->queue_id = ntohl(qs11->queue_id);
7612 oqs->tx_bytes = ntohll(qs11->tx_bytes);
7613 oqs->tx_packets = ntohll(qs11->tx_packets);
7614 oqs->tx_errors = ntohll(qs11->tx_errors);
7615 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
7621 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
7622 const struct ofp13_queue_stats *qs13)
7624 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
7626 oqs->duration_sec = ntohl(qs13->duration_sec);
7627 oqs->duration_nsec = ntohl(qs13->duration_nsec);
7634 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
7637 const struct ofp14_queue_stats *qs14;
7640 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
7642 return OFPERR_OFPBRC_BAD_LEN;
7645 len = ntohs(qs14->length);
7646 if (len < sizeof *qs14 || len - sizeof *qs14 > ofpbuf_size(msg)) {
7647 return OFPERR_OFPBRC_BAD_LEN;
7649 ofpbuf_pull(msg, len - sizeof *qs14);
7651 /* No properties yet defined, so ignore them for now. */
7653 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
7656 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
7657 * ofputil_queue_stats in 'qs'.
7659 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
7660 * message. Calling this function multiple times for a single 'msg' iterates
7661 * through the replies. The caller must initially leave 'msg''s layer pointers
7662 * null and not modify them between calls.
7664 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7665 * otherwise a positive errno value. */
7667 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
7673 ? ofpraw_decode(&raw, msg->frame)
7674 : ofpraw_pull(&raw, msg));
7679 if (!ofpbuf_size(msg)) {
7681 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
7682 return ofputil_pull_ofp14_queue_stats(qs, msg);
7683 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
7684 const struct ofp13_queue_stats *qs13;
7686 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
7690 return ofputil_queue_stats_from_ofp13(qs, qs13);
7691 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
7692 const struct ofp11_queue_stats *qs11;
7694 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
7698 return ofputil_queue_stats_from_ofp11(qs, qs11);
7699 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
7700 const struct ofp10_queue_stats *qs10;
7702 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
7706 return ofputil_queue_stats_from_ofp10(qs, qs10);
7712 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
7713 "bytes at end", ofpbuf_size(msg));
7714 return OFPERR_OFPBRC_BAD_LEN;
7718 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
7719 struct ofp10_queue_stats *qs10)
7721 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
7722 memset(qs10->pad, 0, sizeof qs10->pad);
7723 qs10->queue_id = htonl(oqs->queue_id);
7724 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
7725 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
7726 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
7730 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
7731 struct ofp11_queue_stats *qs11)
7733 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
7734 qs11->queue_id = htonl(oqs->queue_id);
7735 qs11->tx_bytes = htonll(oqs->tx_bytes);
7736 qs11->tx_packets = htonll(oqs->tx_packets);
7737 qs11->tx_errors = htonll(oqs->tx_errors);
7741 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
7742 struct ofp13_queue_stats *qs13)
7744 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
7745 if (oqs->duration_sec != UINT32_MAX) {
7746 qs13->duration_sec = htonl(oqs->duration_sec);
7747 qs13->duration_nsec = htonl(oqs->duration_nsec);
7749 qs13->duration_sec = OVS_BE32_MAX;
7750 qs13->duration_nsec = OVS_BE32_MAX;
7755 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
7756 struct ofp14_queue_stats *qs14)
7758 qs14->length = htons(sizeof *qs14);
7759 memset(qs14->pad, 0, sizeof qs14->pad);
7760 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
7764 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
7766 ofputil_append_queue_stat(struct list *replies,
7767 const struct ofputil_queue_stats *oqs)
7769 switch (ofpmp_version(replies)) {
7770 case OFP13_VERSION: {
7771 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7772 ofputil_queue_stats_to_ofp13(oqs, reply);
7777 case OFP11_VERSION: {
7778 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7779 ofputil_queue_stats_to_ofp11(oqs, reply);
7783 case OFP10_VERSION: {
7784 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7785 ofputil_queue_stats_to_ofp10(oqs, reply);
7790 case OFP15_VERSION: {
7791 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
7792 ofputil_queue_stats_to_ofp14(oqs, reply);
7802 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
7803 struct ofputil_bundle_ctrl_msg *msg)
7807 const struct ofp14_bundle_ctrl_msg *m;
7809 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7810 raw = ofpraw_pull_assert(&b);
7811 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
7814 msg->bundle_id = ntohl(m->bundle_id);
7815 msg->type = ntohs(m->type);
7816 msg->flags = ntohs(m->flags);
7822 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
7823 struct ofputil_bundle_ctrl_msg *msg)
7826 struct ofp14_bundle_ctrl_msg *m;
7828 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
7829 m = ofpbuf_put_zeros(buf, sizeof *m);
7831 m->bundle_id = htonl(msg->bundle_id);
7832 m->type = htons(msg->type);
7833 m->flags = htons(msg->flags);
7839 ofputil_decode_bundle_add(const struct ofp_header *oh,
7840 struct ofputil_bundle_add_msg *msg)
7842 const struct ofp14_bundle_ctrl_msg *m;
7847 ofpbuf_use_const(&b, oh, ntohs(oh->length));
7848 raw = ofpraw_pull_assert(&b);
7849 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
7851 m = ofpbuf_pull(&b, sizeof *m);
7852 msg->bundle_id = ntohl(m->bundle_id);
7853 msg->flags = ntohs(m->flags);
7855 msg->msg = ofpbuf_data(&b);
7856 inner_len = ntohs(msg->msg->length);
7857 if (inner_len < sizeof(struct ofp_header) || inner_len > ofpbuf_size(&b)) {
7858 return OFPERR_OFPBFC_MSG_BAD_LEN;
7865 ofputil_encode_bundle_add(enum ofp_version ofp_version,
7866 struct ofputil_bundle_add_msg *msg)
7868 struct ofpbuf *request;
7869 struct ofp14_bundle_ctrl_msg *m;
7871 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version, 0);
7872 m = ofpbuf_put_zeros(request, sizeof *m);
7874 m->bundle_id = htonl(msg->bundle_id);
7875 m->flags = htons(msg->flags);
7876 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));