2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 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"
46 VLOG_DEFINE_THIS_MODULE(ofp_util);
48 /* Rate limit for OpenFlow message parse errors. These always indicate a bug
49 * in the peer and so there's not much point in showing a lot of them. */
50 static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
52 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
53 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
56 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
57 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
58 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
59 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
62 ofputil_wcbits_to_netmask(int wcbits)
65 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
68 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
69 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
70 * between 0 and 32 inclusive.
72 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
73 * still be in the valid range but isn't otherwise meaningful. */
75 ofputil_netmask_to_wcbits(ovs_be32 netmask)
77 return 32 - ip_count_cidr_bits(netmask);
80 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
81 * flow_wildcards in 'wc' for use in struct match. It is the caller's
82 * responsibility to handle the special case where the flow match's dl_vlan is
83 * set to OFP_VLAN_NONE. */
85 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
87 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 22);
89 /* Initialize most of wc. */
90 flow_wildcards_init_catchall(wc);
92 if (!(ofpfw & OFPFW10_IN_PORT)) {
93 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
96 if (!(ofpfw & OFPFW10_NW_TOS)) {
97 wc->masks.nw_tos |= IP_DSCP_MASK;
100 if (!(ofpfw & OFPFW10_NW_PROTO)) {
101 wc->masks.nw_proto = UINT8_MAX;
103 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
104 >> OFPFW10_NW_SRC_SHIFT);
105 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
106 >> OFPFW10_NW_DST_SHIFT);
108 if (!(ofpfw & OFPFW10_TP_SRC)) {
109 wc->masks.tp_src = OVS_BE16_MAX;
111 if (!(ofpfw & OFPFW10_TP_DST)) {
112 wc->masks.tp_dst = OVS_BE16_MAX;
115 if (!(ofpfw & OFPFW10_DL_SRC)) {
116 memset(wc->masks.dl_src, 0xff, ETH_ADDR_LEN);
118 if (!(ofpfw & OFPFW10_DL_DST)) {
119 memset(wc->masks.dl_dst, 0xff, ETH_ADDR_LEN);
121 if (!(ofpfw & OFPFW10_DL_TYPE)) {
122 wc->masks.dl_type = OVS_BE16_MAX;
126 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
127 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
129 if (!(ofpfw & OFPFW10_DL_VLAN)) {
130 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
134 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
136 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
139 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
141 /* Initialize match->wc. */
142 memset(&match->flow, 0, sizeof match->flow);
143 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
145 /* Initialize most of match->flow. */
146 match->flow.nw_src = ofmatch->nw_src;
147 match->flow.nw_dst = ofmatch->nw_dst;
148 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
149 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
150 match->flow.tp_src = ofmatch->tp_src;
151 match->flow.tp_dst = ofmatch->tp_dst;
152 memcpy(match->flow.dl_src, ofmatch->dl_src, ETH_ADDR_LEN);
153 memcpy(match->flow.dl_dst, ofmatch->dl_dst, ETH_ADDR_LEN);
154 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
155 match->flow.nw_proto = ofmatch->nw_proto;
157 /* Translate VLANs. */
158 if (!(ofpfw & OFPFW10_DL_VLAN) &&
159 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
160 /* Match only packets without 802.1Q header.
162 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
164 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
165 * because we can't have a specific PCP without an 802.1Q header.
166 * However, older versions of OVS treated this as matching packets
167 * withut an 802.1Q header, so we do here too. */
168 match->flow.vlan_tci = htons(0);
169 match->wc.masks.vlan_tci = htons(0xffff);
171 ovs_be16 vid, pcp, tci;
173 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
174 pcp = htons((ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK);
175 tci = vid | pcp | htons(VLAN_CFI);
176 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
180 match_zero_wildcarded_fields(match);
183 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
185 ofputil_match_to_ofp10_match(const struct match *match,
186 struct ofp10_match *ofmatch)
188 const struct flow_wildcards *wc = &match->wc;
191 /* Figure out most OpenFlow wildcards. */
193 if (!wc->masks.in_port.ofp_port) {
194 ofpfw |= OFPFW10_IN_PORT;
196 if (!wc->masks.dl_type) {
197 ofpfw |= OFPFW10_DL_TYPE;
199 if (!wc->masks.nw_proto) {
200 ofpfw |= OFPFW10_NW_PROTO;
202 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
203 << OFPFW10_NW_SRC_SHIFT);
204 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
205 << OFPFW10_NW_DST_SHIFT);
206 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
207 ofpfw |= OFPFW10_NW_TOS;
209 if (!wc->masks.tp_src) {
210 ofpfw |= OFPFW10_TP_SRC;
212 if (!wc->masks.tp_dst) {
213 ofpfw |= OFPFW10_TP_DST;
215 if (eth_addr_is_zero(wc->masks.dl_src)) {
216 ofpfw |= OFPFW10_DL_SRC;
218 if (eth_addr_is_zero(wc->masks.dl_dst)) {
219 ofpfw |= OFPFW10_DL_DST;
222 /* Translate VLANs. */
223 ofmatch->dl_vlan = htons(0);
224 ofmatch->dl_vlan_pcp = 0;
225 if (match->wc.masks.vlan_tci == htons(0)) {
226 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
227 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
228 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
229 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
230 ofpfw |= OFPFW10_DL_VLAN_PCP;
232 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
233 ofpfw |= OFPFW10_DL_VLAN;
235 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
238 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
239 ofpfw |= OFPFW10_DL_VLAN_PCP;
241 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
245 /* Compose most of the match structure. */
246 ofmatch->wildcards = htonl(ofpfw);
247 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
248 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
249 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
250 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
251 ofmatch->nw_src = match->flow.nw_src;
252 ofmatch->nw_dst = match->flow.nw_dst;
253 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
254 ofmatch->nw_proto = match->flow.nw_proto;
255 ofmatch->tp_src = match->flow.tp_src;
256 ofmatch->tp_dst = match->flow.tp_dst;
257 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
258 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
262 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
263 uint16_t *padded_match_len)
265 struct ofp11_match_header *omh = buf->data;
268 if (buf->size < sizeof *omh) {
269 return OFPERR_OFPBMC_BAD_LEN;
272 match_len = ntohs(omh->length);
274 switch (ntohs(omh->type)) {
275 case OFPMT_STANDARD: {
276 struct ofp11_match *om;
278 if (match_len != sizeof *om || buf->size < sizeof *om) {
279 return OFPERR_OFPBMC_BAD_LEN;
281 om = ofpbuf_pull(buf, sizeof *om);
282 if (padded_match_len) {
283 *padded_match_len = match_len;
285 return ofputil_match_from_ofp11_match(om, match);
289 if (padded_match_len) {
290 *padded_match_len = ROUND_UP(match_len, 8);
292 return oxm_pull_match(buf, match);
295 return OFPERR_OFPBMC_BAD_TYPE;
299 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
300 * Returns 0 if successful, otherwise an OFPERR_* value. */
302 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
305 uint16_t wc = ntohl(ofmatch->wildcards);
306 uint8_t dl_src_mask[ETH_ADDR_LEN];
307 uint8_t dl_dst_mask[ETH_ADDR_LEN];
308 bool ipv4, arp, rarp;
311 match_init_catchall(match);
313 if (!(wc & OFPFW11_IN_PORT)) {
317 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
319 return OFPERR_OFPBMC_BAD_VALUE;
321 match_set_in_port(match, ofp_port);
324 for (i = 0; i < ETH_ADDR_LEN; i++) {
325 dl_src_mask[i] = ~ofmatch->dl_src_mask[i];
327 match_set_dl_src_masked(match, ofmatch->dl_src, dl_src_mask);
329 for (i = 0; i < ETH_ADDR_LEN; i++) {
330 dl_dst_mask[i] = ~ofmatch->dl_dst_mask[i];
332 match_set_dl_dst_masked(match, ofmatch->dl_dst, dl_dst_mask);
334 if (!(wc & OFPFW11_DL_VLAN)) {
335 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
336 /* Match only packets without a VLAN tag. */
337 match->flow.vlan_tci = htons(0);
338 match->wc.masks.vlan_tci = OVS_BE16_MAX;
340 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
341 /* Match any packet with a VLAN tag regardless of VID. */
342 match->flow.vlan_tci = htons(VLAN_CFI);
343 match->wc.masks.vlan_tci = htons(VLAN_CFI);
344 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
345 /* Match only packets with the specified VLAN VID. */
346 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
347 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
350 return OFPERR_OFPBMC_BAD_VALUE;
353 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
354 if (ofmatch->dl_vlan_pcp <= 7) {
355 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
357 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
360 return OFPERR_OFPBMC_BAD_VALUE;
366 if (!(wc & OFPFW11_DL_TYPE)) {
367 match_set_dl_type(match,
368 ofputil_dl_type_from_openflow(ofmatch->dl_type));
371 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
372 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
373 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
375 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
376 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
378 return OFPERR_OFPBMC_BAD_VALUE;
381 match_set_nw_dscp(match, ofmatch->nw_tos);
384 if (ipv4 || arp || rarp) {
385 if (!(wc & OFPFW11_NW_PROTO)) {
386 match_set_nw_proto(match, ofmatch->nw_proto);
388 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
389 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
392 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
393 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
394 switch (match->flow.nw_proto) {
396 /* "A.2.3 Flow Match Structures" in OF1.1 says:
398 * The tp_src and tp_dst fields will be ignored unless the
399 * network protocol specified is as TCP, UDP or SCTP.
401 * but I'm pretty sure we should support ICMP too, otherwise
402 * that's a regression from OF1.0. */
403 if (!(wc & OFPFW11_TP_SRC)) {
404 uint16_t icmp_type = ntohs(ofmatch->tp_src);
405 if (icmp_type < 0x100) {
406 match_set_icmp_type(match, icmp_type);
408 return OFPERR_OFPBMC_BAD_FIELD;
411 if (!(wc & OFPFW11_TP_DST)) {
412 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
413 if (icmp_code < 0x100) {
414 match_set_icmp_code(match, icmp_code);
416 return OFPERR_OFPBMC_BAD_FIELD;
424 if (!(wc & (OFPFW11_TP_SRC))) {
425 match_set_tp_src(match, ofmatch->tp_src);
427 if (!(wc & (OFPFW11_TP_DST))) {
428 match_set_tp_dst(match, ofmatch->tp_dst);
433 /* OF1.1 says explicitly to ignore this. */
438 if (eth_type_mpls(match->flow.dl_type)) {
439 enum { OFPFW11_MPLS_ALL = OFPFW11_MPLS_LABEL | OFPFW11_MPLS_TC };
441 if ((wc & OFPFW11_MPLS_ALL) != OFPFW11_MPLS_ALL) {
442 /* MPLS not supported. */
443 return OFPERR_OFPBMC_BAD_TAG;
447 match_set_metadata_masked(match, ofmatch->metadata,
448 ~ofmatch->metadata_mask);
453 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
455 ofputil_match_to_ofp11_match(const struct match *match,
456 struct ofp11_match *ofmatch)
461 memset(ofmatch, 0, sizeof *ofmatch);
462 ofmatch->omh.type = htons(OFPMT_STANDARD);
463 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
465 if (!match->wc.masks.in_port.ofp_port) {
466 wc |= OFPFW11_IN_PORT;
468 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
471 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
472 for (i = 0; i < ETH_ADDR_LEN; i++) {
473 ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i];
476 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
477 for (i = 0; i < ETH_ADDR_LEN; i++) {
478 ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i];
481 if (match->wc.masks.vlan_tci == htons(0)) {
482 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
483 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
484 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
485 ofmatch->dl_vlan = htons(OFPVID11_NONE);
486 wc |= OFPFW11_DL_VLAN_PCP;
488 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
489 ofmatch->dl_vlan = htons(OFPVID11_ANY);
491 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
494 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
495 wc |= OFPFW11_DL_VLAN_PCP;
497 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
501 if (!match->wc.masks.dl_type) {
502 wc |= OFPFW11_DL_TYPE;
504 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
507 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
508 wc |= OFPFW11_NW_TOS;
510 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
513 if (!match->wc.masks.nw_proto) {
514 wc |= OFPFW11_NW_PROTO;
516 ofmatch->nw_proto = match->flow.nw_proto;
519 ofmatch->nw_src = match->flow.nw_src;
520 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
521 ofmatch->nw_dst = match->flow.nw_dst;
522 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
524 if (!match->wc.masks.tp_src) {
525 wc |= OFPFW11_TP_SRC;
527 ofmatch->tp_src = match->flow.tp_src;
530 if (!match->wc.masks.tp_dst) {
531 wc |= OFPFW11_TP_DST;
533 ofmatch->tp_dst = match->flow.tp_dst;
536 /* MPLS not supported. */
537 wc |= OFPFW11_MPLS_LABEL;
538 wc |= OFPFW11_MPLS_TC;
540 ofmatch->metadata = match->flow.metadata;
541 ofmatch->metadata_mask = ~match->wc.masks.metadata;
543 ofmatch->wildcards = htonl(wc);
546 /* Returns the "typical" length of a match for 'protocol', for use in
547 * estimating space to preallocate. */
549 ofputil_match_typical_len(enum ofputil_protocol protocol)
552 case OFPUTIL_P_OF10_STD:
553 case OFPUTIL_P_OF10_STD_TID:
554 return sizeof(struct ofp10_match);
556 case OFPUTIL_P_OF10_NXM:
557 case OFPUTIL_P_OF10_NXM_TID:
558 return NXM_TYPICAL_LEN;
560 case OFPUTIL_P_OF11_STD:
561 return sizeof(struct ofp11_match);
563 case OFPUTIL_P_OF12_OXM:
564 case OFPUTIL_P_OF13_OXM:
565 return NXM_TYPICAL_LEN;
572 /* Appends to 'b' an struct ofp11_match_header followed by a match that
573 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
574 * data appended out to a multiple of 8. 'protocol' must be one that is usable
575 * in OpenFlow 1.1 or later.
577 * This function can cause 'b''s data to be reallocated.
579 * Returns the number of bytes appended to 'b', excluding the padding. Never
582 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
583 enum ofputil_protocol protocol)
586 case OFPUTIL_P_OF10_STD:
587 case OFPUTIL_P_OF10_STD_TID:
588 case OFPUTIL_P_OF10_NXM:
589 case OFPUTIL_P_OF10_NXM_TID:
592 case OFPUTIL_P_OF11_STD: {
593 struct ofp11_match *om;
595 /* Make sure that no padding is needed. */
596 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
598 om = ofpbuf_put_uninit(b, sizeof *om);
599 ofputil_match_to_ofp11_match(match, om);
603 case OFPUTIL_P_OF12_OXM:
604 case OFPUTIL_P_OF13_OXM:
605 return oxm_put_match(b, match);
611 /* Given a 'dl_type' value in the format used in struct flow, returns the
612 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
615 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
617 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
618 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
622 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
623 * structure, returns the corresponding 'dl_type' value for use in struct
626 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
628 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
629 ? htons(FLOW_DL_TYPE_NONE)
635 struct proto_abbrev {
636 enum ofputil_protocol protocol;
640 /* Most users really don't care about some of the differences between
641 * protocols. These abbreviations help with that. */
642 static const struct proto_abbrev proto_abbrevs[] = {
643 { OFPUTIL_P_ANY, "any" },
644 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
645 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
646 { OFPUTIL_P_ANY_OXM, "OXM" },
648 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
650 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
657 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
659 /* Returns the set of ofputil_protocols that are supported with the given
660 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
661 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
662 * if 'version' is not supported or outside the valid range. */
663 enum ofputil_protocol
664 ofputil_protocols_from_ofp_version(enum ofp_version version)
668 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
670 return OFPUTIL_P_OF11_STD;
672 return OFPUTIL_P_OF12_OXM;
674 return OFPUTIL_P_OF13_OXM;
680 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
681 * connection that has negotiated the given 'version'. 'version' should
682 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
683 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
684 * outside the valid range. */
685 enum ofputil_protocol
686 ofputil_protocol_from_ofp_version(enum ofp_version version)
688 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
691 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
692 * etc.) that corresponds to 'protocol'. */
694 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
697 case OFPUTIL_P_OF10_STD:
698 case OFPUTIL_P_OF10_STD_TID:
699 case OFPUTIL_P_OF10_NXM:
700 case OFPUTIL_P_OF10_NXM_TID:
701 return OFP10_VERSION;
702 case OFPUTIL_P_OF11_STD:
703 return OFP11_VERSION;
704 case OFPUTIL_P_OF12_OXM:
705 return OFP12_VERSION;
706 case OFPUTIL_P_OF13_OXM:
707 return OFP13_VERSION;
713 /* Returns a bitmap of OpenFlow versions that are supported by at
714 * least one of the 'protocols'. */
716 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
720 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
721 enum ofputil_protocol protocol = rightmost_1bit(protocols);
723 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
729 /* Returns the set of protocols that are supported on top of the
730 * OpenFlow versions included in 'bitmap'. */
731 enum ofputil_protocol
732 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
734 enum ofputil_protocol protocols = 0;
736 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
737 enum ofp_version version = rightmost_1bit_idx(bitmap);
739 protocols |= ofputil_protocols_from_ofp_version(version);
745 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
748 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
750 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
753 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
754 * extension turned on or off if 'enable' is true or false, respectively.
756 * This extension is only useful for protocols whose "standard" version does
757 * not allow specific tables to be modified. In particular, this is true of
758 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
759 * specifies a table ID and so there is no need for such an extension. When
760 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
761 * extension, this function just returns its 'protocol' argument unchanged
762 * regardless of the value of 'enable'. */
763 enum ofputil_protocol
764 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
767 case OFPUTIL_P_OF10_STD:
768 case OFPUTIL_P_OF10_STD_TID:
769 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
771 case OFPUTIL_P_OF10_NXM:
772 case OFPUTIL_P_OF10_NXM_TID:
773 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
775 case OFPUTIL_P_OF11_STD:
776 return OFPUTIL_P_OF11_STD;
778 case OFPUTIL_P_OF12_OXM:
779 return OFPUTIL_P_OF12_OXM;
781 case OFPUTIL_P_OF13_OXM:
782 return OFPUTIL_P_OF13_OXM;
789 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
790 * some extension to a standard protocol version, the return value is the
791 * standard version of that protocol without any extension. If 'protocol' is a
792 * standard protocol version, returns 'protocol' unchanged. */
793 enum ofputil_protocol
794 ofputil_protocol_to_base(enum ofputil_protocol protocol)
796 return ofputil_protocol_set_tid(protocol, false);
799 /* Returns 'new_base' with any extensions taken from 'cur'. */
800 enum ofputil_protocol
801 ofputil_protocol_set_base(enum ofputil_protocol cur,
802 enum ofputil_protocol new_base)
804 bool tid = (cur & OFPUTIL_P_TID) != 0;
807 case OFPUTIL_P_OF10_STD:
808 case OFPUTIL_P_OF10_STD_TID:
809 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
811 case OFPUTIL_P_OF10_NXM:
812 case OFPUTIL_P_OF10_NXM_TID:
813 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
815 case OFPUTIL_P_OF11_STD:
816 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
818 case OFPUTIL_P_OF12_OXM:
819 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
821 case OFPUTIL_P_OF13_OXM:
822 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
829 /* Returns a string form of 'protocol', if a simple form exists (that is, if
830 * 'protocol' is either a single protocol or it is a combination of protocols
831 * that have a single abbreviation). Otherwise, returns NULL. */
833 ofputil_protocol_to_string(enum ofputil_protocol protocol)
835 const struct proto_abbrev *p;
837 /* Use a "switch" statement for single-bit names so that we get a compiler
838 * warning if we forget any. */
840 case OFPUTIL_P_OF10_NXM:
841 return "NXM-table_id";
843 case OFPUTIL_P_OF10_NXM_TID:
844 return "NXM+table_id";
846 case OFPUTIL_P_OF10_STD:
847 return "OpenFlow10-table_id";
849 case OFPUTIL_P_OF10_STD_TID:
850 return "OpenFlow10+table_id";
852 case OFPUTIL_P_OF11_STD:
855 case OFPUTIL_P_OF12_OXM:
856 return "OXM-OpenFlow12";
858 case OFPUTIL_P_OF13_OXM:
859 return "OXM-OpenFlow13";
862 /* Check abbreviations. */
863 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
864 if (protocol == p->protocol) {
872 /* Returns a string that represents 'protocols'. The return value might be a
873 * comma-separated list if 'protocols' doesn't have a simple name. The return
874 * value is "none" if 'protocols' is 0.
876 * The caller must free the returned string (with free()). */
878 ofputil_protocols_to_string(enum ofputil_protocol protocols)
882 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
883 if (protocols == 0) {
884 return xstrdup("none");
889 const struct proto_abbrev *p;
893 ds_put_char(&s, ',');
896 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
897 if ((protocols & p->protocol) == p->protocol) {
898 ds_put_cstr(&s, p->name);
899 protocols &= ~p->protocol;
904 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
905 enum ofputil_protocol bit = 1u << i;
907 if (protocols & bit) {
908 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
917 return ds_steal_cstr(&s);
920 static enum ofputil_protocol
921 ofputil_protocol_from_string__(const char *s, size_t n)
923 const struct proto_abbrev *p;
926 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
927 enum ofputil_protocol bit = 1u << i;
928 const char *name = ofputil_protocol_to_string(bit);
930 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
935 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
936 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
944 /* Returns the nonempty set of protocols represented by 's', which can be a
945 * single protocol name or abbreviation or a comma-separated list of them.
947 * Aborts the program with an error message if 's' is invalid. */
948 enum ofputil_protocol
949 ofputil_protocols_from_string(const char *s)
951 const char *orig_s = s;
952 enum ofputil_protocol protocols;
956 enum ofputil_protocol p;
965 p = ofputil_protocol_from_string__(s, n);
967 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
975 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
981 ofputil_version_from_string(const char *s)
983 if (!strcasecmp(s, "OpenFlow10")) {
984 return OFP10_VERSION;
986 if (!strcasecmp(s, "OpenFlow11")) {
987 return OFP11_VERSION;
989 if (!strcasecmp(s, "OpenFlow12")) {
990 return OFP12_VERSION;
992 if (!strcasecmp(s, "OpenFlow13")) {
993 return OFP13_VERSION;
999 is_delimiter(unsigned char c)
1001 return isspace(c) || c == ',';
1005 ofputil_versions_from_string(const char *s)
1008 uint32_t bitmap = 0;
1015 if (is_delimiter(s[i])) {
1020 while (s[i + j] && !is_delimiter(s[i + j])) {
1023 key = xmemdup0(s + i, j);
1024 version = ofputil_version_from_string(key);
1026 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1029 bitmap |= 1u << version;
1037 ofputil_versions_from_strings(char ** const s, size_t count)
1039 uint32_t bitmap = 0;
1042 int version = ofputil_version_from_string(s[count]);
1044 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1046 bitmap |= 1u << version;
1054 ofputil_version_to_string(enum ofp_version ofp_version)
1056 switch (ofp_version) {
1058 return "OpenFlow10";
1060 return "OpenFlow11";
1062 return "OpenFlow12";
1064 return "OpenFlow13";
1071 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1073 switch (packet_in_format) {
1074 case NXPIF_OPENFLOW10:
1083 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1085 switch (packet_in_format) {
1086 case NXPIF_OPENFLOW10:
1087 return "openflow10";
1096 ofputil_packet_in_format_from_string(const char *s)
1098 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1099 : !strcmp(s, "nxm") ? NXPIF_NXM
1104 ofputil_format_version(struct ds *msg, enum ofp_version version)
1106 ds_put_format(msg, "0x%02x", version);
1110 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1112 ds_put_cstr(msg, ofputil_version_to_string(version));
1116 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1117 void (*format_version)(struct ds *msg,
1121 format_version(msg, raw_ctz(bitmap));
1122 bitmap = zero_rightmost_1bit(bitmap);
1124 ds_put_cstr(msg, ", ");
1130 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1132 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1136 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1138 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1142 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1143 uint32_t *allowed_versionsp)
1145 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1146 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1147 uint32_t allowed_versions;
1149 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1153 /* Only use the first 32-bit element of the bitmap as that is all the
1154 * current implementation supports. Subsequent elements are ignored which
1155 * should have no effect on session negotiation until Open vSwtich supports
1156 * wire-protocol versions greater than 31.
1158 allowed_versions = ntohl(bitmap[0]);
1160 if (allowed_versions & 1) {
1161 /* There's no OpenFlow version 0. */
1162 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1164 allowed_versions &= ~1u;
1167 if (!allowed_versions) {
1168 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1169 "version (between 0x01 and 0x1f)");
1173 *allowed_versionsp = allowed_versions;
1178 version_bitmap_from_version(uint8_t ofp_version)
1180 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1183 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1184 * the set of OpenFlow versions for which 'oh' announces support.
1186 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1187 * successful, and thus '*allowed_versions' is always initialized. However, it
1188 * returns false if 'oh' contains some data that could not be fully understood,
1189 * true if 'oh' was completely parsed. */
1191 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1196 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1197 ofpbuf_pull(&msg, sizeof *oh);
1199 *allowed_versions = version_bitmap_from_version(oh->version);
1201 const struct ofp_hello_elem_header *oheh;
1204 if (msg.size < sizeof *oheh) {
1209 len = ntohs(oheh->length);
1210 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1214 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1215 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1223 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1224 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1226 should_send_version_bitmap(uint32_t allowed_versions)
1228 return !is_pow2((allowed_versions >> 1) + 1);
1231 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1232 * versions in the 'allowed_versions' bitmaps and returns the message. */
1234 ofputil_encode_hello(uint32_t allowed_versions)
1236 enum ofp_version ofp_version;
1239 ofp_version = leftmost_1bit_idx(allowed_versions);
1240 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1242 if (should_send_version_bitmap(allowed_versions)) {
1243 struct ofp_hello_elem_header *oheh;
1246 map_len = sizeof allowed_versions;
1247 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1248 oheh->type = htons(OFPHET_VERSIONBITMAP);
1249 oheh->length = htons(map_len + sizeof *oheh);
1250 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1252 ofpmsg_update_length(msg);
1258 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1259 * protocol is 'current', at least partly transitions the protocol to 'want'.
1260 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1261 * connection if the switch processes the returned message correctly. (If
1262 * '*next != want' then the caller will have to iterate.)
1264 * If 'current == want', or if it is not possible to transition from 'current'
1265 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1266 * protocol versions), returns NULL and stores 'current' in '*next'. */
1268 ofputil_encode_set_protocol(enum ofputil_protocol current,
1269 enum ofputil_protocol want,
1270 enum ofputil_protocol *next)
1272 enum ofp_version cur_version, want_version;
1273 enum ofputil_protocol cur_base, want_base;
1274 bool cur_tid, want_tid;
1276 cur_version = ofputil_protocol_to_ofp_version(current);
1277 want_version = ofputil_protocol_to_ofp_version(want);
1278 if (cur_version != want_version) {
1283 cur_base = ofputil_protocol_to_base(current);
1284 want_base = ofputil_protocol_to_base(want);
1285 if (cur_base != want_base) {
1286 *next = ofputil_protocol_set_base(current, want_base);
1288 switch (want_base) {
1289 case OFPUTIL_P_OF10_NXM:
1290 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1292 case OFPUTIL_P_OF10_STD:
1293 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1295 case OFPUTIL_P_OF11_STD:
1296 case OFPUTIL_P_OF12_OXM:
1297 case OFPUTIL_P_OF13_OXM:
1298 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1299 * verified above that we're not trying to change versions. */
1302 case OFPUTIL_P_OF10_STD_TID:
1303 case OFPUTIL_P_OF10_NXM_TID:
1308 cur_tid = (current & OFPUTIL_P_TID) != 0;
1309 want_tid = (want & OFPUTIL_P_TID) != 0;
1310 if (cur_tid != want_tid) {
1311 *next = ofputil_protocol_set_tid(current, want_tid);
1312 return ofputil_make_flow_mod_table_id(want_tid);
1315 ovs_assert(current == want);
1321 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1322 * format to 'nxff'. */
1324 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1326 struct nx_set_flow_format *sff;
1329 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1331 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1332 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1333 sff->format = htonl(nxff);
1338 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1340 enum ofputil_protocol
1341 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1343 switch (flow_format) {
1344 case NXFF_OPENFLOW10:
1345 return OFPUTIL_P_OF10_STD;
1348 return OFPUTIL_P_OF10_NXM;
1355 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1357 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1359 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1362 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1365 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1367 switch (flow_format) {
1368 case NXFF_OPENFLOW10:
1369 return "openflow10";
1378 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1379 enum nx_packet_in_format packet_in_format)
1381 struct nx_set_packet_in_format *spif;
1384 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1385 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1386 spif->format = htonl(packet_in_format);
1391 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1392 * extension on or off (according to 'flow_mod_table_id'). */
1394 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1396 struct nx_flow_mod_table_id *nfmti;
1399 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1400 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1401 nfmti->set = flow_mod_table_id;
1405 struct ofputil_flow_mod_flag {
1407 enum ofp_version min_version, max_version;
1408 enum ofputil_flow_mod_flags flag;
1411 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1412 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1413 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1414 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1416 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1417 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1418 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1423 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1424 enum ofp_flow_mod_command command,
1425 enum ofp_version version,
1426 enum ofputil_flow_mod_flags *flagsp)
1428 uint16_t raw_flags = ntohs(raw_flags_);
1429 const struct ofputil_flow_mod_flag *f;
1432 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1433 if (raw_flags & f->raw_flag
1434 && version >= f->min_version
1435 && (!f->max_version || version <= f->max_version)) {
1436 raw_flags &= ~f->raw_flag;
1441 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1444 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1445 * resets counters. */
1446 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1447 && command == OFPFC_ADD) {
1448 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1451 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1455 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1456 enum ofp_version version)
1458 const struct ofputil_flow_mod_flag *f;
1462 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1464 && version >= f->min_version
1465 && (!f->max_version || version <= f->max_version)) {
1466 raw_flags |= f->raw_flag;
1470 return htons(raw_flags);
1473 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1474 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1477 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1478 * The caller must initialize 'ofpacts' and retains ownership of it.
1479 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1481 * Does not validate the flow_mod actions. The caller should do that, with
1482 * ofpacts_check(). */
1484 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1485 const struct ofp_header *oh,
1486 enum ofputil_protocol protocol,
1487 struct ofpbuf *ofpacts)
1494 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1495 raw = ofpraw_pull_assert(&b);
1496 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1497 /* Standard OpenFlow 1.1+ flow_mod. */
1498 const struct ofp11_flow_mod *ofm;
1500 ofm = ofpbuf_pull(&b, sizeof *ofm);
1502 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1507 error = ofpacts_pull_openflow_instructions(&b, b.size, oh->version,
1513 /* Translate the message. */
1514 fm->priority = ntohs(ofm->priority);
1515 if (ofm->command == OFPFC_ADD
1516 || (oh->version == OFP11_VERSION
1517 && (ofm->command == OFPFC_MODIFY ||
1518 ofm->command == OFPFC_MODIFY_STRICT)
1519 && ofm->cookie_mask == htonll(0))) {
1520 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1521 * not match on the cookie is treated as an "add" if there is no
1523 fm->cookie = htonll(0);
1524 fm->cookie_mask = htonll(0);
1525 fm->new_cookie = ofm->cookie;
1527 fm->cookie = ofm->cookie;
1528 fm->cookie_mask = ofm->cookie_mask;
1529 fm->new_cookie = OVS_BE64_MAX;
1531 fm->modify_cookie = false;
1532 fm->command = ofm->command;
1536 * OF1.1 entirely forbids table_id == 255.
1537 * OF1.2+ allows table_id == 255 only for deletes. */
1538 fm->table_id = ofm->table_id;
1539 if (fm->table_id == 255
1540 && (oh->version == OFP11_VERSION
1541 || (ofm->command != OFPFC_DELETE &&
1542 ofm->command != OFPFC_DELETE_STRICT))) {
1543 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1546 fm->idle_timeout = ntohs(ofm->idle_timeout);
1547 fm->hard_timeout = ntohs(ofm->hard_timeout);
1548 fm->buffer_id = ntohl(ofm->buffer_id);
1549 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1553 fm->out_group = ntohl(ofm->out_group);
1555 if ((ofm->command == OFPFC_DELETE
1556 || ofm->command == OFPFC_DELETE_STRICT)
1557 && ofm->out_group != htonl(OFPG_ANY)) {
1558 return OFPERR_OFPFMFC_UNKNOWN;
1560 raw_flags = ofm->flags;
1564 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1565 /* Standard OpenFlow 1.0 flow_mod. */
1566 const struct ofp10_flow_mod *ofm;
1568 /* Get the ofp10_flow_mod. */
1569 ofm = ofpbuf_pull(&b, sizeof *ofm);
1571 /* Translate the rule. */
1572 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1573 ofputil_normalize_match(&fm->match);
1575 /* Now get the actions. */
1576 error = ofpacts_pull_openflow_actions(&b, b.size, oh->version,
1582 /* OpenFlow 1.0 says that exact-match rules have to have the
1583 * highest possible priority. */
1584 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1585 ? ntohs(ofm->priority)
1588 /* Translate the message. */
1589 command = ntohs(ofm->command);
1590 fm->cookie = htonll(0);
1591 fm->cookie_mask = htonll(0);
1592 fm->new_cookie = ofm->cookie;
1593 fm->idle_timeout = ntohs(ofm->idle_timeout);
1594 fm->hard_timeout = ntohs(ofm->hard_timeout);
1595 fm->buffer_id = ntohl(ofm->buffer_id);
1596 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1597 fm->out_group = OFPG11_ANY;
1598 raw_flags = ofm->flags;
1599 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1600 /* Nicira extended flow_mod. */
1601 const struct nx_flow_mod *nfm;
1603 /* Dissect the message. */
1604 nfm = ofpbuf_pull(&b, sizeof *nfm);
1605 error = nx_pull_match(&b, ntohs(nfm->match_len),
1606 &fm->match, &fm->cookie, &fm->cookie_mask);
1610 error = ofpacts_pull_openflow_actions(&b, b.size, oh->version,
1616 /* Translate the message. */
1617 command = ntohs(nfm->command);
1618 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1619 /* Flow additions may only set a new cookie, not match an
1620 * existing cookie. */
1621 return OFPERR_NXBRC_NXM_INVALID;
1623 fm->priority = ntohs(nfm->priority);
1624 fm->new_cookie = nfm->cookie;
1625 fm->idle_timeout = ntohs(nfm->idle_timeout);
1626 fm->hard_timeout = ntohs(nfm->hard_timeout);
1627 fm->buffer_id = ntohl(nfm->buffer_id);
1628 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1629 fm->out_group = OFPG11_ANY;
1630 raw_flags = nfm->flags;
1635 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1636 if (protocol & OFPUTIL_P_TID) {
1637 fm->command = command & 0xff;
1638 fm->table_id = command >> 8;
1640 fm->command = command;
1641 fm->table_id = 0xff;
1645 fm->ofpacts = ofpacts->data;
1646 fm->ofpacts_len = ofpacts->size;
1648 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1649 oh->version, &fm->flags);
1654 if (fm->flags & OFPUTIL_FF_EMERG) {
1655 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1656 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1658 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1659 * or hard_timeout is nonzero. Otherwise, there is no good error
1660 * code, so just state that the flow table is full. */
1661 return (fm->hard_timeout || fm->idle_timeout
1662 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1663 : OFPERR_OFPFMFC_TABLE_FULL);
1670 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1671 struct ofpbuf *bands)
1673 const struct ofp13_meter_band_header *ombh;
1674 struct ofputil_meter_band *mb;
1677 ombh = ofpbuf_try_pull(msg, len);
1679 return OFPERR_OFPBRC_BAD_LEN;
1682 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1683 size_t ombh_len = ntohs(ombh->len);
1684 /* All supported band types have the same length. */
1685 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1686 return OFPERR_OFPBRC_BAD_LEN;
1688 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1689 mb->type = ntohs(ombh->type);
1690 mb->rate = ntohl(ombh->rate);
1691 mb->burst_size = ntohl(ombh->burst_size);
1692 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1693 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1696 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1697 (char *) ombh + ombh_len);
1700 return OFPERR_OFPBRC_BAD_LEN;
1707 ofputil_decode_meter_mod(const struct ofp_header *oh,
1708 struct ofputil_meter_mod *mm,
1709 struct ofpbuf *bands)
1711 const struct ofp13_meter_mod *omm;
1714 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1715 ofpraw_pull_assert(&b);
1716 omm = ofpbuf_pull(&b, sizeof *omm);
1718 /* Translate the message. */
1719 mm->command = ntohs(omm->command);
1720 mm->meter.meter_id = ntohl(omm->meter_id);
1722 if (mm->command == OFPMC13_DELETE) {
1723 mm->meter.flags = 0;
1724 mm->meter.n_bands = 0;
1725 mm->meter.bands = NULL;
1729 mm->meter.flags = ntohs(omm->flags);
1730 mm->meter.bands = bands->data;
1732 error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
1741 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1743 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1744 *meter_id = ntohl(omr->meter_id);
1748 ofputil_encode_meter_request(enum ofp_version ofp_version,
1749 enum ofputil_meter_request_type type,
1757 case OFPUTIL_METER_CONFIG:
1758 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1760 case OFPUTIL_METER_STATS:
1761 raw = OFPRAW_OFPST13_METER_REQUEST;
1764 case OFPUTIL_METER_FEATURES:
1765 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1769 msg = ofpraw_alloc(raw, ofp_version, 0);
1771 if (type != OFPUTIL_METER_FEATURES) {
1772 struct ofp13_meter_multipart_request *omr;
1773 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1774 omr->meter_id = htonl(meter_id);
1780 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1785 for (n = 0; n < n_bands; ++n) {
1786 /* Currently all band types have same size. */
1787 struct ofp13_meter_band_dscp_remark *ombh;
1788 size_t ombh_len = sizeof *ombh;
1790 ombh = ofpbuf_put_zeros(msg, ombh_len);
1792 ombh->type = htons(mb->type);
1793 ombh->len = htons(ombh_len);
1794 ombh->rate = htonl(mb->rate);
1795 ombh->burst_size = htonl(mb->burst_size);
1796 ombh->prec_level = mb->prec_level;
1802 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1804 ofputil_append_meter_config(struct list *replies,
1805 const struct ofputil_meter_config *mc)
1807 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1808 size_t start_ofs = msg->size;
1809 struct ofp13_meter_config *reply = ofpbuf_put_uninit(msg, sizeof *reply);
1810 reply->flags = htons(mc->flags);
1811 reply->meter_id = htonl(mc->meter_id);
1813 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1815 reply->length = htons(msg->size - start_ofs);
1817 ofpmp_postappend(replies, start_ofs);
1820 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1822 ofputil_append_meter_stats(struct list *replies,
1823 const struct ofputil_meter_stats *ms)
1825 struct ofp13_meter_stats *reply;
1829 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
1830 reply = ofpmp_append(replies, len);
1832 reply->meter_id = htonl(ms->meter_id);
1833 reply->len = htons(len);
1834 memset(reply->pad, 0, sizeof reply->pad);
1835 reply->flow_count = htonl(ms->flow_count);
1836 reply->packet_in_count = htonll(ms->packet_in_count);
1837 reply->byte_in_count = htonll(ms->byte_in_count);
1838 reply->duration_sec = htonl(ms->duration_sec);
1839 reply->duration_nsec = htonl(ms->duration_nsec);
1841 for (n = 0; n < ms->n_bands; ++n) {
1842 const struct ofputil_meter_band_stats *src = &ms->bands[n];
1843 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
1845 dst->packet_band_count = htonll(src->packet_count);
1846 dst->byte_band_count = htonll(src->byte_count);
1850 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
1851 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
1852 * 'bands'. The caller must have initialized 'bands' and retains ownership of
1853 * it across the call.
1855 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
1856 * message. Calling this function multiple times for a single 'msg' iterates
1857 * through the replies. 'bands' is cleared for each reply.
1859 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1860 * otherwise a positive errno value. */
1862 ofputil_decode_meter_config(struct ofpbuf *msg,
1863 struct ofputil_meter_config *mc,
1864 struct ofpbuf *bands)
1866 const struct ofp13_meter_config *omc;
1869 /* Pull OpenFlow headers for the first call. */
1871 ofpraw_pull_assert(msg);
1878 omc = ofpbuf_try_pull(msg, sizeof *omc);
1880 VLOG_WARN_RL(&bad_ofmsg_rl,
1881 "OFPMP_METER_CONFIG reply has %zu leftover bytes at end",
1883 return OFPERR_OFPBRC_BAD_LEN;
1886 ofpbuf_clear(bands);
1887 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
1888 &mc->n_bands, bands);
1892 mc->meter_id = ntohl(omc->meter_id);
1893 mc->flags = ntohs(omc->flags);
1894 mc->bands = bands->data;
1900 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1901 struct ofpbuf *bands)
1903 const struct ofp13_meter_band_stats *ombs;
1904 struct ofputil_meter_band_stats *mbs;
1907 ombs = ofpbuf_try_pull(msg, len);
1909 return OFPERR_OFPBRC_BAD_LEN;
1912 n = len / sizeof *ombs;
1913 if (len != n * sizeof *ombs) {
1914 return OFPERR_OFPBRC_BAD_LEN;
1917 mbs = ofpbuf_put_uninit(bands, len);
1919 for (i = 0; i < n; ++i) {
1920 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
1921 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
1927 /* Converts an OFPMP_METER reply in 'msg' into an abstract
1928 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
1929 * decoded into 'bands'.
1931 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
1932 * message. Calling this function multiple times for a single 'msg' iterates
1933 * through the replies. 'bands' is cleared for each reply.
1935 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1936 * otherwise a positive errno value. */
1938 ofputil_decode_meter_stats(struct ofpbuf *msg,
1939 struct ofputil_meter_stats *ms,
1940 struct ofpbuf *bands)
1942 const struct ofp13_meter_stats *oms;
1945 /* Pull OpenFlow headers for the first call. */
1947 ofpraw_pull_assert(msg);
1954 oms = ofpbuf_try_pull(msg, sizeof *oms);
1956 VLOG_WARN_RL(&bad_ofmsg_rl,
1957 "OFPMP_METER reply has %zu leftover bytes at end",
1959 return OFPERR_OFPBRC_BAD_LEN;
1962 ofpbuf_clear(bands);
1963 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
1964 &ms->n_bands, bands);
1968 ms->meter_id = ntohl(oms->meter_id);
1969 ms->flow_count = ntohl(oms->flow_count);
1970 ms->packet_in_count = ntohll(oms->packet_in_count);
1971 ms->byte_in_count = ntohll(oms->byte_in_count);
1972 ms->duration_sec = ntohl(oms->duration_sec);
1973 ms->duration_nsec = ntohl(oms->duration_nsec);
1974 ms->bands = bands->data;
1980 ofputil_decode_meter_features(const struct ofp_header *oh,
1981 struct ofputil_meter_features *mf)
1983 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
1985 mf->max_meters = ntohl(omf->max_meter);
1986 mf->band_types = ntohl(omf->band_types);
1987 mf->capabilities = ntohl(omf->capabilities);
1988 mf->max_bands = omf->max_bands;
1989 mf->max_color = omf->max_color;
1993 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
1994 const struct ofp_header *request)
1996 struct ofpbuf *reply;
1997 struct ofp13_meter_features *omf;
1999 reply = ofpraw_alloc_stats_reply(request, 0);
2000 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2002 omf->max_meter = htonl(mf->max_meters);
2003 omf->band_types = htonl(mf->band_types);
2004 omf->capabilities = htonl(mf->capabilities);
2005 omf->max_bands = mf->max_bands;
2006 omf->max_color = mf->max_color;
2012 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2013 const struct ofputil_meter_mod *mm)
2017 struct ofp13_meter_mod *omm;
2019 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2020 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2021 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2022 omm->command = htons(mm->command);
2023 if (mm->command != OFPMC13_DELETE) {
2024 omm->flags = htons(mm->meter.flags);
2026 omm->meter_id = htonl(mm->meter.meter_id);
2028 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2030 ofpmsg_update_length(msg);
2035 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2036 enum ofputil_protocol protocol)
2038 return htons(protocol & OFPUTIL_P_TID
2039 ? (fm->command & 0xff) | (fm->table_id << 8)
2043 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2044 * 'protocol' and returns the message. */
2046 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2047 enum ofputil_protocol protocol)
2049 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2050 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2054 case OFPUTIL_P_OF11_STD:
2055 case OFPUTIL_P_OF12_OXM:
2056 case OFPUTIL_P_OF13_OXM: {
2057 struct ofp11_flow_mod *ofm;
2060 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2061 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2062 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2063 if ((protocol == OFPUTIL_P_OF11_STD
2064 && (fm->command == OFPFC_MODIFY ||
2065 fm->command == OFPFC_MODIFY_STRICT)
2066 && fm->cookie_mask == htonll(0))
2067 || fm->command == OFPFC_ADD) {
2068 ofm->cookie = fm->new_cookie;
2070 ofm->cookie = fm->cookie;
2072 ofm->cookie_mask = fm->cookie_mask;
2073 if (fm->table_id != 255
2074 || (protocol != OFPUTIL_P_OF11_STD
2075 && (fm->command == OFPFC_DELETE ||
2076 fm->command == OFPFC_DELETE_STRICT))) {
2077 ofm->table_id = fm->table_id;
2081 ofm->command = fm->command;
2082 ofm->idle_timeout = htons(fm->idle_timeout);
2083 ofm->hard_timeout = htons(fm->hard_timeout);
2084 ofm->priority = htons(fm->priority);
2085 ofm->buffer_id = htonl(fm->buffer_id);
2086 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2087 ofm->out_group = htonl(fm->out_group);
2088 ofm->flags = raw_flags;
2089 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2090 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2095 case OFPUTIL_P_OF10_STD:
2096 case OFPUTIL_P_OF10_STD_TID: {
2097 struct ofp10_flow_mod *ofm;
2099 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2101 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2102 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2103 ofm->cookie = fm->new_cookie;
2104 ofm->command = ofputil_tid_command(fm, protocol);
2105 ofm->idle_timeout = htons(fm->idle_timeout);
2106 ofm->hard_timeout = htons(fm->hard_timeout);
2107 ofm->priority = htons(fm->priority);
2108 ofm->buffer_id = htonl(fm->buffer_id);
2109 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2110 ofm->flags = raw_flags;
2111 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2116 case OFPUTIL_P_OF10_NXM:
2117 case OFPUTIL_P_OF10_NXM_TID: {
2118 struct nx_flow_mod *nfm;
2121 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2122 NXM_TYPICAL_LEN + fm->ofpacts_len);
2123 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2124 nfm->command = ofputil_tid_command(fm, protocol);
2125 nfm->cookie = fm->new_cookie;
2126 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2128 nfm->idle_timeout = htons(fm->idle_timeout);
2129 nfm->hard_timeout = htons(fm->hard_timeout);
2130 nfm->priority = htons(fm->priority);
2131 nfm->buffer_id = htonl(fm->buffer_id);
2132 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2133 nfm->flags = raw_flags;
2134 nfm->match_len = htons(match_len);
2135 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2144 ofpmsg_update_length(msg);
2149 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2150 const struct ofp10_flow_stats_request *ofsr,
2153 fsr->aggregate = aggregate;
2154 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2155 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2156 fsr->out_group = OFPG11_ANY;
2157 fsr->table_id = ofsr->table_id;
2158 fsr->cookie = fsr->cookie_mask = htonll(0);
2164 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2165 struct ofpbuf *b, bool aggregate)
2167 const struct ofp11_flow_stats_request *ofsr;
2170 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2171 fsr->aggregate = aggregate;
2172 fsr->table_id = ofsr->table_id;
2173 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2177 fsr->out_group = ntohl(ofsr->out_group);
2178 fsr->cookie = ofsr->cookie;
2179 fsr->cookie_mask = ofsr->cookie_mask;
2180 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2189 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2190 struct ofpbuf *b, bool aggregate)
2192 const struct nx_flow_stats_request *nfsr;
2195 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2196 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2197 &fsr->cookie, &fsr->cookie_mask);
2202 return OFPERR_OFPBRC_BAD_LEN;
2205 fsr->aggregate = aggregate;
2206 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2207 fsr->out_group = OFPG11_ANY;
2208 fsr->table_id = nfsr->table_id;
2213 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2214 * 'port', suitable for OpenFlow version 'version'. */
2216 ofputil_encode_queue_get_config_request(enum ofp_version version,
2219 struct ofpbuf *request;
2221 if (version == OFP10_VERSION) {
2222 struct ofp10_queue_get_config_request *qgcr10;
2224 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2226 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2227 qgcr10->port = htons(ofp_to_u16(port));
2229 struct ofp11_queue_get_config_request *qgcr11;
2231 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2233 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2234 qgcr11->port = ofputil_port_to_ofp11(port);
2240 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2241 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2244 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2247 const struct ofp10_queue_get_config_request *qgcr10;
2248 const struct ofp11_queue_get_config_request *qgcr11;
2252 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2253 raw = ofpraw_pull_assert(&b);
2255 switch ((int) raw) {
2256 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2258 *port = u16_to_ofp(ntohs(qgcr10->port));
2261 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2263 return ofputil_port_from_ofp11(qgcr11->port, port);
2269 /* Constructs and returns the beginning of a reply to
2270 * OFPT_QUEUE_GET_CONFIG_REQUEST 'oh'. The caller may append information about
2271 * individual queues with ofputil_append_queue_get_config_reply(). */
2273 ofputil_encode_queue_get_config_reply(const struct ofp_header *oh)
2275 struct ofp10_queue_get_config_reply *qgcr10;
2276 struct ofp11_queue_get_config_reply *qgcr11;
2277 struct ofpbuf *reply;
2283 error = ofputil_decode_queue_get_config_request(oh, &port);
2286 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2287 raw = ofpraw_pull_assert(&b);
2289 switch ((int) raw) {
2290 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2291 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2293 qgcr10 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2294 qgcr10->port = htons(ofp_to_u16(port));
2297 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2298 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2300 qgcr11 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2301 qgcr11->port = ofputil_port_to_ofp11(port);
2312 put_queue_rate(struct ofpbuf *reply, enum ofp_queue_properties property,
2315 if (rate != UINT16_MAX) {
2316 struct ofp_queue_prop_rate *oqpr;
2318 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2319 oqpr->prop_header.property = htons(property);
2320 oqpr->prop_header.len = htons(sizeof *oqpr);
2321 oqpr->rate = htons(rate);
2325 /* Appends a queue description for 'queue_id' to the
2326 * OFPT_QUEUE_GET_CONFIG_REPLY already in 'oh'. */
2328 ofputil_append_queue_get_config_reply(struct ofpbuf *reply,
2329 const struct ofputil_queue_config *oqc)
2331 const struct ofp_header *oh = reply->data;
2332 size_t start_ofs, len_ofs;
2335 start_ofs = reply->size;
2336 if (oh->version < OFP12_VERSION) {
2337 struct ofp10_packet_queue *opq10;
2339 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2340 opq10->queue_id = htonl(oqc->queue_id);
2341 len_ofs = (char *) &opq10->len - (char *) reply->data;
2343 struct ofp11_queue_get_config_reply *qgcr11;
2344 struct ofp12_packet_queue *opq12;
2348 port = qgcr11->port;
2350 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2352 opq12->queue_id = htonl(oqc->queue_id);
2353 len_ofs = (char *) &opq12->len - (char *) reply->data;
2356 put_queue_rate(reply, OFPQT_MIN_RATE, oqc->min_rate);
2357 put_queue_rate(reply, OFPQT_MAX_RATE, oqc->max_rate);
2359 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2360 *len = htons(reply->size - start_ofs);
2363 /* Decodes the initial part of an OFPT_QUEUE_GET_CONFIG_REPLY from 'reply' and
2364 * stores in '*port' the port that the reply is about. The caller may call
2365 * ofputil_pull_queue_get_config_reply() to obtain information about individual
2366 * queues included in the reply. Returns 0 if successful, otherwise an
2369 ofputil_decode_queue_get_config_reply(struct ofpbuf *reply, ofp_port_t *port)
2371 const struct ofp10_queue_get_config_reply *qgcr10;
2372 const struct ofp11_queue_get_config_reply *qgcr11;
2375 raw = ofpraw_pull_assert(reply);
2376 switch ((int) raw) {
2377 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY:
2378 qgcr10 = ofpbuf_pull(reply, sizeof *qgcr10);
2379 *port = u16_to_ofp(ntohs(qgcr10->port));
2382 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY:
2383 qgcr11 = ofpbuf_pull(reply, sizeof *qgcr11);
2384 return ofputil_port_from_ofp11(qgcr11->port, port);
2391 parse_queue_rate(const struct ofp_queue_prop_header *hdr, uint16_t *rate)
2393 const struct ofp_queue_prop_rate *oqpr;
2395 if (hdr->len == htons(sizeof *oqpr)) {
2396 oqpr = (const struct ofp_queue_prop_rate *) hdr;
2397 *rate = ntohs(oqpr->rate);
2400 return OFPERR_OFPBRC_BAD_LEN;
2404 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2405 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2406 * must already have pulled off the main header.
2408 * This function returns EOF if the last queue has already been decoded, 0 if a
2409 * queue was successfully decoded into '*queue', or an ofperr if there was a
2410 * problem decoding 'reply'. */
2412 ofputil_pull_queue_get_config_reply(struct ofpbuf *reply,
2413 struct ofputil_queue_config *queue)
2415 const struct ofp_header *oh;
2416 unsigned int opq_len;
2423 queue->min_rate = UINT16_MAX;
2424 queue->max_rate = UINT16_MAX;
2427 if (oh->version < OFP12_VERSION) {
2428 const struct ofp10_packet_queue *opq10;
2430 opq10 = ofpbuf_try_pull(reply, sizeof *opq10);
2432 return OFPERR_OFPBRC_BAD_LEN;
2434 queue->queue_id = ntohl(opq10->queue_id);
2435 len = ntohs(opq10->len);
2436 opq_len = sizeof *opq10;
2438 const struct ofp12_packet_queue *opq12;
2440 opq12 = ofpbuf_try_pull(reply, sizeof *opq12);
2442 return OFPERR_OFPBRC_BAD_LEN;
2444 queue->queue_id = ntohl(opq12->queue_id);
2445 len = ntohs(opq12->len);
2446 opq_len = sizeof *opq12;
2449 if (len < opq_len || len > reply->size + opq_len || len % 8) {
2450 return OFPERR_OFPBRC_BAD_LEN;
2455 const struct ofp_queue_prop_header *hdr;
2456 unsigned int property;
2457 unsigned int prop_len;
2458 enum ofperr error = 0;
2460 hdr = ofpbuf_at_assert(reply, 0, sizeof *hdr);
2461 prop_len = ntohs(hdr->len);
2462 if (prop_len < sizeof *hdr || prop_len > reply->size || prop_len % 8) {
2463 return OFPERR_OFPBRC_BAD_LEN;
2466 property = ntohs(hdr->property);
2468 case OFPQT_MIN_RATE:
2469 error = parse_queue_rate(hdr, &queue->min_rate);
2472 case OFPQT_MAX_RATE:
2473 error = parse_queue_rate(hdr, &queue->max_rate);
2477 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2484 ofpbuf_pull(reply, prop_len);
2490 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2491 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2492 * successful, otherwise an OpenFlow error code. */
2494 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2495 const struct ofp_header *oh)
2500 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2501 raw = ofpraw_pull_assert(&b);
2502 switch ((int) raw) {
2503 case OFPRAW_OFPST10_FLOW_REQUEST:
2504 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2506 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2507 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2509 case OFPRAW_OFPST11_FLOW_REQUEST:
2510 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2512 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2513 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2515 case OFPRAW_NXST_FLOW_REQUEST:
2516 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2518 case OFPRAW_NXST_AGGREGATE_REQUEST:
2519 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2522 /* Hey, the caller lied. */
2527 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2528 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2529 * 'protocol', and returns the message. */
2531 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2532 enum ofputil_protocol protocol)
2538 case OFPUTIL_P_OF11_STD:
2539 case OFPUTIL_P_OF12_OXM:
2540 case OFPUTIL_P_OF13_OXM: {
2541 struct ofp11_flow_stats_request *ofsr;
2543 raw = (fsr->aggregate
2544 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2545 : OFPRAW_OFPST11_FLOW_REQUEST);
2546 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2547 ofputil_match_typical_len(protocol));
2548 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2549 ofsr->table_id = fsr->table_id;
2550 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2551 ofsr->out_group = htonl(fsr->out_group);
2552 ofsr->cookie = fsr->cookie;
2553 ofsr->cookie_mask = fsr->cookie_mask;
2554 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2558 case OFPUTIL_P_OF10_STD:
2559 case OFPUTIL_P_OF10_STD_TID: {
2560 struct ofp10_flow_stats_request *ofsr;
2562 raw = (fsr->aggregate
2563 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2564 : OFPRAW_OFPST10_FLOW_REQUEST);
2565 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2566 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2567 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2568 ofsr->table_id = fsr->table_id;
2569 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2573 case OFPUTIL_P_OF10_NXM:
2574 case OFPUTIL_P_OF10_NXM_TID: {
2575 struct nx_flow_stats_request *nfsr;
2578 raw = (fsr->aggregate
2579 ? OFPRAW_NXST_AGGREGATE_REQUEST
2580 : OFPRAW_NXST_FLOW_REQUEST);
2581 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2582 ofpbuf_put_zeros(msg, sizeof *nfsr);
2583 match_len = nx_put_match(msg, &fsr->match,
2584 fsr->cookie, fsr->cookie_mask);
2587 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2588 nfsr->match_len = htons(match_len);
2589 nfsr->table_id = fsr->table_id;
2600 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2601 * ofputil_flow_stats in 'fs'.
2603 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2604 * OpenFlow message. Calling this function multiple times for a single 'msg'
2605 * iterates through the replies. The caller must initially leave 'msg''s layer
2606 * pointers null and not modify them between calls.
2608 * Most switches don't send the values needed to populate fs->idle_age and
2609 * fs->hard_age, so those members will usually be set to 0. If the switch from
2610 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2611 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2612 * 'idle_age' and 'hard_age' members in 'fs'.
2614 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2615 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2616 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2618 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2619 * otherwise a positive errno value. */
2621 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2623 bool flow_age_extension,
2624 struct ofpbuf *ofpacts)
2626 const struct ofp_header *oh;
2631 ? ofpraw_decode(&raw, msg->l2)
2632 : ofpraw_pull(&raw, msg));
2640 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2641 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2642 const struct ofp11_flow_stats *ofs;
2644 uint16_t padded_match_len;
2646 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2648 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover "
2649 "bytes at end", msg->size);
2653 length = ntohs(ofs->length);
2654 if (length < sizeof *ofs) {
2655 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2656 "length %zu", length);
2660 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2661 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2665 if (ofpacts_pull_openflow_instructions(msg, length - sizeof *ofs -
2666 padded_match_len, oh->version,
2668 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2672 fs->priority = ntohs(ofs->priority);
2673 fs->table_id = ofs->table_id;
2674 fs->duration_sec = ntohl(ofs->duration_sec);
2675 fs->duration_nsec = ntohl(ofs->duration_nsec);
2676 fs->idle_timeout = ntohs(ofs->idle_timeout);
2677 fs->hard_timeout = ntohs(ofs->hard_timeout);
2678 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2679 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2689 fs->cookie = ofs->cookie;
2690 fs->packet_count = ntohll(ofs->packet_count);
2691 fs->byte_count = ntohll(ofs->byte_count);
2692 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2693 const struct ofp10_flow_stats *ofs;
2696 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2698 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover "
2699 "bytes at end", msg->size);
2703 length = ntohs(ofs->length);
2704 if (length < sizeof *ofs) {
2705 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2706 "length %zu", length);
2710 if (ofpacts_pull_openflow_actions(msg, length - sizeof *ofs,
2711 oh->version, ofpacts)) {
2715 fs->cookie = get_32aligned_be64(&ofs->cookie);
2716 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2717 fs->priority = ntohs(ofs->priority);
2718 fs->table_id = ofs->table_id;
2719 fs->duration_sec = ntohl(ofs->duration_sec);
2720 fs->duration_nsec = ntohl(ofs->duration_nsec);
2721 fs->idle_timeout = ntohs(ofs->idle_timeout);
2722 fs->hard_timeout = ntohs(ofs->hard_timeout);
2725 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2726 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2728 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2729 const struct nx_flow_stats *nfs;
2730 size_t match_len, actions_len, length;
2732 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2734 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %zu leftover "
2735 "bytes at end", msg->size);
2739 length = ntohs(nfs->length);
2740 match_len = ntohs(nfs->match_len);
2741 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2742 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%zu "
2743 "claims invalid length %zu", match_len, length);
2746 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2750 actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2751 if (ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
2756 fs->cookie = nfs->cookie;
2757 fs->table_id = nfs->table_id;
2758 fs->duration_sec = ntohl(nfs->duration_sec);
2759 fs->duration_nsec = ntohl(nfs->duration_nsec);
2760 fs->priority = ntohs(nfs->priority);
2761 fs->idle_timeout = ntohs(nfs->idle_timeout);
2762 fs->hard_timeout = ntohs(nfs->hard_timeout);
2765 if (flow_age_extension) {
2766 if (nfs->idle_age) {
2767 fs->idle_age = ntohs(nfs->idle_age) - 1;
2769 if (nfs->hard_age) {
2770 fs->hard_age = ntohs(nfs->hard_age) - 1;
2773 fs->packet_count = ntohll(nfs->packet_count);
2774 fs->byte_count = ntohll(nfs->byte_count);
2780 fs->ofpacts = ofpacts->data;
2781 fs->ofpacts_len = ofpacts->size;
2786 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2788 * We use this in situations where OVS internally uses UINT64_MAX to mean
2789 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2791 unknown_to_zero(uint64_t count)
2793 return count != UINT64_MAX ? count : 0;
2796 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2797 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2798 * have been initialized with ofpmp_init(). */
2800 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2801 struct list *replies)
2803 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2804 size_t start_ofs = reply->size;
2806 enum ofp_version version = ((struct ofp_header *)reply->data)->version;
2808 ofpraw_decode_partial(&raw, reply->data, reply->size);
2809 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2810 struct ofp11_flow_stats *ofs;
2812 ofpbuf_put_uninit(reply, sizeof *ofs);
2813 oxm_put_match(reply, &fs->match);
2814 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
2817 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2818 ofs->length = htons(reply->size - start_ofs);
2819 ofs->table_id = fs->table_id;
2821 ofs->duration_sec = htonl(fs->duration_sec);
2822 ofs->duration_nsec = htonl(fs->duration_nsec);
2823 ofs->priority = htons(fs->priority);
2824 ofs->idle_timeout = htons(fs->idle_timeout);
2825 ofs->hard_timeout = htons(fs->hard_timeout);
2826 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2827 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
2831 memset(ofs->pad2, 0, sizeof ofs->pad2);
2832 ofs->cookie = fs->cookie;
2833 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
2834 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
2835 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2836 struct ofp10_flow_stats *ofs;
2838 ofpbuf_put_uninit(reply, sizeof *ofs);
2839 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
2841 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2842 ofs->length = htons(reply->size - start_ofs);
2843 ofs->table_id = fs->table_id;
2845 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
2846 ofs->duration_sec = htonl(fs->duration_sec);
2847 ofs->duration_nsec = htonl(fs->duration_nsec);
2848 ofs->priority = htons(fs->priority);
2849 ofs->idle_timeout = htons(fs->idle_timeout);
2850 ofs->hard_timeout = htons(fs->hard_timeout);
2851 memset(ofs->pad2, 0, sizeof ofs->pad2);
2852 put_32aligned_be64(&ofs->cookie, fs->cookie);
2853 put_32aligned_be64(&ofs->packet_count,
2854 htonll(unknown_to_zero(fs->packet_count)));
2855 put_32aligned_be64(&ofs->byte_count,
2856 htonll(unknown_to_zero(fs->byte_count)));
2857 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2858 struct nx_flow_stats *nfs;
2861 ofpbuf_put_uninit(reply, sizeof *nfs);
2862 match_len = nx_put_match(reply, &fs->match, 0, 0);
2863 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
2865 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
2866 nfs->length = htons(reply->size - start_ofs);
2867 nfs->table_id = fs->table_id;
2869 nfs->duration_sec = htonl(fs->duration_sec);
2870 nfs->duration_nsec = htonl(fs->duration_nsec);
2871 nfs->priority = htons(fs->priority);
2872 nfs->idle_timeout = htons(fs->idle_timeout);
2873 nfs->hard_timeout = htons(fs->hard_timeout);
2874 nfs->idle_age = htons(fs->idle_age < 0 ? 0
2875 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
2877 nfs->hard_age = htons(fs->hard_age < 0 ? 0
2878 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
2880 nfs->match_len = htons(match_len);
2881 nfs->cookie = fs->cookie;
2882 nfs->packet_count = htonll(fs->packet_count);
2883 nfs->byte_count = htonll(fs->byte_count);
2888 ofpmp_postappend(replies, start_ofs);
2891 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
2892 * NXST_AGGREGATE reply matching 'request', and returns the message. */
2894 ofputil_encode_aggregate_stats_reply(
2895 const struct ofputil_aggregate_stats *stats,
2896 const struct ofp_header *request)
2898 struct ofp_aggregate_stats_reply *asr;
2899 uint64_t packet_count;
2900 uint64_t byte_count;
2904 ofpraw_decode(&raw, request);
2905 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
2906 packet_count = unknown_to_zero(stats->packet_count);
2907 byte_count = unknown_to_zero(stats->byte_count);
2909 packet_count = stats->packet_count;
2910 byte_count = stats->byte_count;
2913 msg = ofpraw_alloc_stats_reply(request, 0);
2914 asr = ofpbuf_put_zeros(msg, sizeof *asr);
2915 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
2916 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
2917 asr->flow_count = htonl(stats->flow_count);
2923 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
2924 const struct ofp_header *reply)
2926 struct ofp_aggregate_stats_reply *asr;
2929 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
2930 ofpraw_pull_assert(&msg);
2933 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
2934 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
2935 stats->flow_count = ntohl(asr->flow_count);
2940 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
2941 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
2942 * an OpenFlow error code. */
2944 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
2945 const struct ofp_header *oh)
2950 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2951 raw = ofpraw_pull_assert(&b);
2952 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
2953 const struct ofp12_flow_removed *ofr;
2956 ofr = ofpbuf_pull(&b, sizeof *ofr);
2958 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
2963 fr->priority = ntohs(ofr->priority);
2964 fr->cookie = ofr->cookie;
2965 fr->reason = ofr->reason;
2966 fr->table_id = ofr->table_id;
2967 fr->duration_sec = ntohl(ofr->duration_sec);
2968 fr->duration_nsec = ntohl(ofr->duration_nsec);
2969 fr->idle_timeout = ntohs(ofr->idle_timeout);
2970 fr->hard_timeout = ntohs(ofr->hard_timeout);
2971 fr->packet_count = ntohll(ofr->packet_count);
2972 fr->byte_count = ntohll(ofr->byte_count);
2973 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
2974 const struct ofp10_flow_removed *ofr;
2976 ofr = ofpbuf_pull(&b, sizeof *ofr);
2978 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
2979 fr->priority = ntohs(ofr->priority);
2980 fr->cookie = ofr->cookie;
2981 fr->reason = ofr->reason;
2983 fr->duration_sec = ntohl(ofr->duration_sec);
2984 fr->duration_nsec = ntohl(ofr->duration_nsec);
2985 fr->idle_timeout = ntohs(ofr->idle_timeout);
2986 fr->hard_timeout = 0;
2987 fr->packet_count = ntohll(ofr->packet_count);
2988 fr->byte_count = ntohll(ofr->byte_count);
2989 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
2990 struct nx_flow_removed *nfr;
2993 nfr = ofpbuf_pull(&b, sizeof *nfr);
2994 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3000 return OFPERR_OFPBRC_BAD_LEN;
3003 fr->priority = ntohs(nfr->priority);
3004 fr->cookie = nfr->cookie;
3005 fr->reason = nfr->reason;
3006 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3007 fr->duration_sec = ntohl(nfr->duration_sec);
3008 fr->duration_nsec = ntohl(nfr->duration_nsec);
3009 fr->idle_timeout = ntohs(nfr->idle_timeout);
3010 fr->hard_timeout = 0;
3011 fr->packet_count = ntohll(nfr->packet_count);
3012 fr->byte_count = ntohll(nfr->byte_count);
3020 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3021 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3024 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3025 enum ofputil_protocol protocol)
3030 case OFPUTIL_P_OF11_STD:
3031 case OFPUTIL_P_OF12_OXM:
3032 case OFPUTIL_P_OF13_OXM: {
3033 struct ofp12_flow_removed *ofr;
3035 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3036 ofputil_protocol_to_ofp_version(protocol),
3038 ofputil_match_typical_len(protocol));
3039 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3040 ofr->cookie = fr->cookie;
3041 ofr->priority = htons(fr->priority);
3042 ofr->reason = fr->reason;
3043 ofr->table_id = fr->table_id;
3044 ofr->duration_sec = htonl(fr->duration_sec);
3045 ofr->duration_nsec = htonl(fr->duration_nsec);
3046 ofr->idle_timeout = htons(fr->idle_timeout);
3047 ofr->hard_timeout = htons(fr->hard_timeout);
3048 ofr->packet_count = htonll(fr->packet_count);
3049 ofr->byte_count = htonll(fr->byte_count);
3050 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3054 case OFPUTIL_P_OF10_STD:
3055 case OFPUTIL_P_OF10_STD_TID: {
3056 struct ofp10_flow_removed *ofr;
3058 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3060 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3061 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3062 ofr->cookie = fr->cookie;
3063 ofr->priority = htons(fr->priority);
3064 ofr->reason = fr->reason;
3065 ofr->duration_sec = htonl(fr->duration_sec);
3066 ofr->duration_nsec = htonl(fr->duration_nsec);
3067 ofr->idle_timeout = htons(fr->idle_timeout);
3068 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3069 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3073 case OFPUTIL_P_OF10_NXM:
3074 case OFPUTIL_P_OF10_NXM_TID: {
3075 struct nx_flow_removed *nfr;
3078 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3079 htonl(0), NXM_TYPICAL_LEN);
3080 nfr = ofpbuf_put_zeros(msg, sizeof *nfr);
3081 match_len = nx_put_match(msg, &fr->match, 0, 0);
3084 nfr->cookie = fr->cookie;
3085 nfr->priority = htons(fr->priority);
3086 nfr->reason = fr->reason;
3087 nfr->table_id = fr->table_id + 1;
3088 nfr->duration_sec = htonl(fr->duration_sec);
3089 nfr->duration_nsec = htonl(fr->duration_nsec);
3090 nfr->idle_timeout = htons(fr->idle_timeout);
3091 nfr->match_len = htons(match_len);
3092 nfr->packet_count = htonll(fr->packet_count);
3093 nfr->byte_count = htonll(fr->byte_count);
3105 ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin,
3106 struct match *match, struct ofpbuf *b)
3108 pin->packet = b->data;
3109 pin->packet_len = b->size;
3111 pin->fmd.in_port = match->flow.in_port.ofp_port;
3112 pin->fmd.tun_id = match->flow.tunnel.tun_id;
3113 pin->fmd.tun_src = match->flow.tunnel.ip_src;
3114 pin->fmd.tun_dst = match->flow.tunnel.ip_dst;
3115 pin->fmd.metadata = match->flow.metadata;
3116 memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs);
3117 pin->fmd.pkt_mark = match->flow.pkt_mark;
3121 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
3122 const struct ofp_header *oh)
3127 memset(pin, 0, sizeof *pin);
3128 pin->cookie = OVS_BE64_MAX;
3130 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3131 raw = ofpraw_pull_assert(&b);
3132 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3133 const struct ofp13_packet_in *opi;
3136 size_t packet_in_size;
3138 if (raw == OFPRAW_OFPT12_PACKET_IN) {
3139 packet_in_size = sizeof (struct ofp12_packet_in);
3141 packet_in_size = sizeof (struct ofp13_packet_in);
3144 opi = ofpbuf_pull(&b, packet_in_size);
3145 error = oxm_pull_match_loose(&b, &match);
3150 if (!ofpbuf_try_pull(&b, 2)) {
3151 return OFPERR_OFPBRC_BAD_LEN;
3154 pin->reason = opi->pi.reason;
3155 pin->table_id = opi->pi.table_id;
3156 pin->buffer_id = ntohl(opi->pi.buffer_id);
3157 pin->total_len = ntohs(opi->pi.total_len);
3159 if (raw == OFPRAW_OFPT13_PACKET_IN) {
3160 pin->cookie = opi->cookie;
3163 ofputil_decode_packet_in_finish(pin, &match, &b);
3164 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3165 const struct ofp10_packet_in *opi;
3167 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3169 pin->packet = opi->data;
3170 pin->packet_len = b.size;
3172 pin->fmd.in_port = u16_to_ofp(ntohs(opi->in_port));
3173 pin->reason = opi->reason;
3174 pin->buffer_id = ntohl(opi->buffer_id);
3175 pin->total_len = ntohs(opi->total_len);
3176 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3177 const struct nx_packet_in *npi;
3181 npi = ofpbuf_pull(&b, sizeof *npi);
3182 error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL,
3188 if (!ofpbuf_try_pull(&b, 2)) {
3189 return OFPERR_OFPBRC_BAD_LEN;
3192 pin->reason = npi->reason;
3193 pin->table_id = npi->table_id;
3194 pin->cookie = npi->cookie;
3196 pin->buffer_id = ntohl(npi->buffer_id);
3197 pin->total_len = ntohs(npi->total_len);
3199 ofputil_decode_packet_in_finish(pin, &match, &b);
3208 ofputil_packet_in_to_match(const struct ofputil_packet_in *pin,
3209 struct match *match)
3213 match_init_catchall(match);
3214 if (pin->fmd.tun_id != htonll(0)) {
3215 match_set_tun_id(match, pin->fmd.tun_id);
3217 if (pin->fmd.tun_src != htonl(0)) {
3218 match_set_tun_src(match, pin->fmd.tun_src);
3220 if (pin->fmd.tun_dst != htonl(0)) {
3221 match_set_tun_dst(match, pin->fmd.tun_dst);
3223 if (pin->fmd.metadata != htonll(0)) {
3224 match_set_metadata(match, pin->fmd.metadata);
3227 for (i = 0; i < FLOW_N_REGS; i++) {
3228 if (pin->fmd.regs[i]) {
3229 match_set_reg(match, i, pin->fmd.regs[i]);
3233 if (pin->fmd.pkt_mark != 0) {
3234 match_set_pkt_mark(match, pin->fmd.pkt_mark);
3237 match_set_in_port(match, pin->fmd.in_port);
3240 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
3241 * in the format specified by 'packet_in_format'. */
3243 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3244 enum ofputil_protocol protocol,
3245 enum nx_packet_in_format packet_in_format)
3247 struct ofpbuf *packet;
3249 /* Add OFPT_PACKET_IN. */
3250 if (protocol == OFPUTIL_P_OF13_OXM || protocol == OFPUTIL_P_OF12_OXM) {
3251 struct ofp13_packet_in *opi;
3253 enum ofpraw packet_in_raw;
3254 enum ofp_version packet_in_version;
3255 size_t packet_in_size;
3257 if (protocol == OFPUTIL_P_OF12_OXM) {
3258 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
3259 packet_in_version = OFP12_VERSION;
3260 packet_in_size = sizeof (struct ofp12_packet_in);
3262 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
3263 packet_in_version = OFP13_VERSION;
3264 packet_in_size = sizeof (struct ofp13_packet_in);
3267 ofputil_packet_in_to_match(pin, &match);
3269 /* The final argument is just an estimate of the space required. */
3270 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
3271 htonl(0), (sizeof(struct flow_metadata) * 2
3272 + 2 + pin->packet_len));
3273 ofpbuf_put_zeros(packet, packet_in_size);
3274 oxm_put_match(packet, &match);
3275 ofpbuf_put_zeros(packet, 2);
3276 ofpbuf_put(packet, pin->packet, pin->packet_len);
3279 opi->pi.buffer_id = htonl(pin->buffer_id);
3280 opi->pi.total_len = htons(pin->total_len);
3281 opi->pi.reason = pin->reason;
3282 opi->pi.table_id = pin->table_id;
3283 if (protocol == OFPUTIL_P_OF13_OXM) {
3284 opi->cookie = pin->cookie;
3286 } else if (packet_in_format == NXPIF_OPENFLOW10) {
3287 struct ofp10_packet_in *opi;
3289 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3290 htonl(0), pin->packet_len);
3291 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
3292 opi->total_len = htons(pin->total_len);
3293 opi->in_port = htons(ofp_to_u16(pin->fmd.in_port));
3294 opi->reason = pin->reason;
3295 opi->buffer_id = htonl(pin->buffer_id);
3297 ofpbuf_put(packet, pin->packet, pin->packet_len);
3298 } else if (packet_in_format == NXPIF_NXM) {
3299 struct nx_packet_in *npi;
3303 ofputil_packet_in_to_match(pin, &match);
3305 /* The final argument is just an estimate of the space required. */
3306 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3307 htonl(0), (sizeof(struct flow_metadata) * 2
3308 + 2 + pin->packet_len));
3309 ofpbuf_put_zeros(packet, sizeof *npi);
3310 match_len = nx_put_match(packet, &match, 0, 0);
3311 ofpbuf_put_zeros(packet, 2);
3312 ofpbuf_put(packet, pin->packet, pin->packet_len);
3315 npi->buffer_id = htonl(pin->buffer_id);
3316 npi->total_len = htons(pin->total_len);
3317 npi->reason = pin->reason;
3318 npi->table_id = pin->table_id;
3319 npi->cookie = pin->cookie;
3320 npi->match_len = htons(match_len);
3324 ofpmsg_update_length(packet);
3329 /* Returns a string form of 'reason'. The return value is either a statically
3330 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3331 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3333 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3334 char *reasonbuf, size_t bufsize)
3341 case OFPR_INVALID_TTL:
3342 return "invalid_ttl";
3344 case OFPR_N_REASONS:
3346 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3352 ofputil_packet_in_reason_from_string(const char *s,
3353 enum ofp_packet_in_reason *reason)
3357 for (i = 0; i < OFPR_N_REASONS; i++) {
3358 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3359 const char *reason_s;
3361 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3363 if (!strcasecmp(s, reason_s)) {
3371 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3374 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3375 * message's actions. The caller must initialize 'ofpacts' and retains
3376 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3378 * Returns 0 if successful, otherwise an OFPERR_* value. */
3380 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3381 const struct ofp_header *oh,
3382 struct ofpbuf *ofpacts)
3387 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3388 raw = ofpraw_pull_assert(&b);
3390 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3392 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3394 po->buffer_id = ntohl(opo->buffer_id);
3395 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3400 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3401 oh->version, ofpacts);
3405 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3407 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3409 po->buffer_id = ntohl(opo->buffer_id);
3410 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3412 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3413 oh->version, ofpacts);
3421 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3422 && po->in_port != OFPP_LOCAL
3423 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3424 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3426 return OFPERR_OFPBRC_BAD_PORT;
3429 po->ofpacts = ofpacts->data;
3430 po->ofpacts_len = ofpacts->size;
3432 if (po->buffer_id == UINT32_MAX) {
3433 po->packet = b.data;
3434 po->packet_len = b.size;
3443 /* ofputil_phy_port */
3445 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3446 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3447 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3448 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3449 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3450 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3451 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3452 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3454 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3455 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3456 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3457 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3458 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3459 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3461 static enum netdev_features
3462 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3464 uint32_t ofp10 = ntohl(ofp10_);
3465 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3469 netdev_port_features_to_ofp10(enum netdev_features features)
3471 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3474 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3475 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3476 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3477 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3478 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3479 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3480 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3481 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3482 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3483 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3484 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3485 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3486 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3487 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3488 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3489 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3491 static enum netdev_features
3492 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3494 return ntohl(ofp11) & 0xffff;
3498 netdev_port_features_to_ofp11(enum netdev_features features)
3500 return htonl(features & 0xffff);
3504 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3505 const struct ofp10_phy_port *opp)
3507 memset(pp, 0, sizeof *pp);
3509 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3510 memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN);
3511 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3513 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3514 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3516 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3517 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3518 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3519 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3521 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3522 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3528 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3529 const struct ofp11_port *op)
3533 memset(pp, 0, sizeof *pp);
3535 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3539 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3540 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3542 pp->config = ntohl(op->config) & OFPPC11_ALL;
3543 pp->state = ntohl(op->state) & OFPPC11_ALL;
3545 pp->curr = netdev_port_features_from_ofp11(op->curr);
3546 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3547 pp->supported = netdev_port_features_from_ofp11(op->supported);
3548 pp->peer = netdev_port_features_from_ofp11(op->peer);
3550 pp->curr_speed = ntohl(op->curr_speed);
3551 pp->max_speed = ntohl(op->max_speed);
3557 ofputil_get_phy_port_size(enum ofp_version ofp_version)
3559 switch (ofp_version) {
3561 return sizeof(struct ofp10_phy_port);
3565 return sizeof(struct ofp11_port);
3572 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3573 struct ofp10_phy_port *opp)
3575 memset(opp, 0, sizeof *opp);
3577 opp->port_no = htons(ofp_to_u16(pp->port_no));
3578 memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3579 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3581 opp->config = htonl(pp->config & OFPPC10_ALL);
3582 opp->state = htonl(pp->state & OFPPS10_ALL);
3584 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3585 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3586 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3587 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3591 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3592 struct ofp11_port *op)
3594 memset(op, 0, sizeof *op);
3596 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3597 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3598 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3600 op->config = htonl(pp->config & OFPPC11_ALL);
3601 op->state = htonl(pp->state & OFPPS11_ALL);
3603 op->curr = netdev_port_features_to_ofp11(pp->curr);
3604 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3605 op->supported = netdev_port_features_to_ofp11(pp->supported);
3606 op->peer = netdev_port_features_to_ofp11(pp->peer);
3608 op->curr_speed = htonl(pp->curr_speed);
3609 op->max_speed = htonl(pp->max_speed);
3613 ofputil_put_phy_port(enum ofp_version ofp_version,
3614 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3616 switch (ofp_version) {
3617 case OFP10_VERSION: {
3618 struct ofp10_phy_port *opp;
3619 if (b->size + sizeof *opp <= UINT16_MAX) {
3620 opp = ofpbuf_put_uninit(b, sizeof *opp);
3621 ofputil_encode_ofp10_phy_port(pp, opp);
3628 case OFP13_VERSION: {
3629 struct ofp11_port *op;
3630 if (b->size + sizeof *op <= UINT16_MAX) {
3631 op = ofpbuf_put_uninit(b, sizeof *op);
3632 ofputil_encode_ofp11_port(pp, op);
3643 ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version,
3644 const struct ofputil_phy_port *pp,
3645 struct list *replies)
3647 switch (ofp_version) {
3648 case OFP10_VERSION: {
3649 struct ofp10_phy_port *opp;
3651 opp = ofpmp_append(replies, sizeof *opp);
3652 ofputil_encode_ofp10_phy_port(pp, opp);
3658 case OFP13_VERSION: {
3659 struct ofp11_port *op;
3661 op = ofpmp_append(replies, sizeof *op);
3662 ofputil_encode_ofp11_port(pp, op);
3671 /* ofputil_switch_features */
3673 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
3674 OFPC_IP_REASM | OFPC_QUEUE_STATS)
3675 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
3676 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
3677 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
3678 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
3679 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
3680 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
3682 struct ofputil_action_bit_translation {
3683 enum ofputil_action_bitmap ofputil_bit;
3687 static const struct ofputil_action_bit_translation of10_action_bits[] = {
3688 { OFPUTIL_A_OUTPUT, OFPAT10_OUTPUT },
3689 { OFPUTIL_A_SET_VLAN_VID, OFPAT10_SET_VLAN_VID },
3690 { OFPUTIL_A_SET_VLAN_PCP, OFPAT10_SET_VLAN_PCP },
3691 { OFPUTIL_A_STRIP_VLAN, OFPAT10_STRIP_VLAN },
3692 { OFPUTIL_A_SET_DL_SRC, OFPAT10_SET_DL_SRC },
3693 { OFPUTIL_A_SET_DL_DST, OFPAT10_SET_DL_DST },
3694 { OFPUTIL_A_SET_NW_SRC, OFPAT10_SET_NW_SRC },
3695 { OFPUTIL_A_SET_NW_DST, OFPAT10_SET_NW_DST },
3696 { OFPUTIL_A_SET_NW_TOS, OFPAT10_SET_NW_TOS },
3697 { OFPUTIL_A_SET_TP_SRC, OFPAT10_SET_TP_SRC },
3698 { OFPUTIL_A_SET_TP_DST, OFPAT10_SET_TP_DST },
3699 { OFPUTIL_A_ENQUEUE, OFPAT10_ENQUEUE },
3703 static enum ofputil_action_bitmap
3704 decode_action_bits(ovs_be32 of_actions,
3705 const struct ofputil_action_bit_translation *x)
3707 enum ofputil_action_bitmap ofputil_actions;
3709 ofputil_actions = 0;
3710 for (; x->ofputil_bit; x++) {
3711 if (of_actions & htonl(1u << x->of_bit)) {
3712 ofputil_actions |= x->ofputil_bit;
3715 return ofputil_actions;
3719 ofputil_capabilities_mask(enum ofp_version ofp_version)
3721 /* Handle capabilities whose bit is unique for all Open Flow versions */
3722 switch (ofp_version) {
3725 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
3728 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
3730 /* Caller needs to check osf->header.version itself */
3735 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
3736 * abstract representation in '*features'. Initializes '*b' to iterate over
3737 * the OpenFlow port structures following 'osf' with later calls to
3738 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
3739 * OFPERR_* value. */
3741 ofputil_decode_switch_features(const struct ofp_header *oh,
3742 struct ofputil_switch_features *features,
3745 const struct ofp_switch_features *osf;
3748 ofpbuf_use_const(b, oh, ntohs(oh->length));
3749 raw = ofpraw_pull_assert(b);
3751 osf = ofpbuf_pull(b, sizeof *osf);
3752 features->datapath_id = ntohll(osf->datapath_id);
3753 features->n_buffers = ntohl(osf->n_buffers);
3754 features->n_tables = osf->n_tables;
3755 features->auxiliary_id = 0;
3757 features->capabilities = ntohl(osf->capabilities) &
3758 ofputil_capabilities_mask(oh->version);
3760 if (b->size % ofputil_get_phy_port_size(oh->version)) {
3761 return OFPERR_OFPBRC_BAD_LEN;
3764 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
3765 if (osf->capabilities & htonl(OFPC10_STP)) {
3766 features->capabilities |= OFPUTIL_C_STP;
3768 features->actions = decode_action_bits(osf->actions, of10_action_bits);
3769 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
3770 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
3771 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
3772 features->capabilities |= OFPUTIL_C_GROUP_STATS;
3774 features->actions = 0;
3775 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
3776 features->auxiliary_id = osf->auxiliary_id;
3779 return OFPERR_OFPBRC_BAD_VERSION;
3785 /* Returns true if the maximum number of ports are in 'oh'. */
3787 max_ports_in_features(const struct ofp_header *oh)
3789 size_t pp_size = ofputil_get_phy_port_size(oh->version);
3790 return ntohs(oh->length) + pp_size > UINT16_MAX;
3793 /* Given a buffer 'b' that contains a Features Reply message, checks if
3794 * it contains the maximum number of ports that will fit. If so, it
3795 * returns true and removes the ports from the message. The caller
3796 * should then send an OFPST_PORT_DESC stats request to get the ports,
3797 * since the switch may have more ports than could be represented in the
3798 * Features Reply. Otherwise, returns false.
3801 ofputil_switch_features_ports_trunc(struct ofpbuf *b)
3803 struct ofp_header *oh = b->data;
3805 if (max_ports_in_features(oh)) {
3806 /* Remove all the ports. */
3807 b->size = (sizeof(struct ofp_header)
3808 + sizeof(struct ofp_switch_features));
3809 ofpmsg_update_length(b);
3818 encode_action_bits(enum ofputil_action_bitmap ofputil_actions,
3819 const struct ofputil_action_bit_translation *x)
3821 uint32_t of_actions;
3824 for (; x->ofputil_bit; x++) {
3825 if (ofputil_actions & x->ofputil_bit) {
3826 of_actions |= 1 << x->of_bit;
3829 return htonl(of_actions);
3832 /* Returns a buffer owned by the caller that encodes 'features' in the format
3833 * required by 'protocol' with the given 'xid'. The caller should append port
3834 * information to the buffer with subsequent calls to
3835 * ofputil_put_switch_features_port(). */
3837 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
3838 enum ofputil_protocol protocol, ovs_be32 xid)
3840 struct ofp_switch_features *osf;
3842 enum ofp_version version;
3845 version = ofputil_protocol_to_ofp_version(protocol);
3848 raw = OFPRAW_OFPT10_FEATURES_REPLY;
3852 raw = OFPRAW_OFPT11_FEATURES_REPLY;
3855 raw = OFPRAW_OFPT13_FEATURES_REPLY;
3860 b = ofpraw_alloc_xid(raw, version, xid, 0);
3861 osf = ofpbuf_put_zeros(b, sizeof *osf);
3862 osf->datapath_id = htonll(features->datapath_id);
3863 osf->n_buffers = htonl(features->n_buffers);
3864 osf->n_tables = features->n_tables;
3866 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
3867 osf->capabilities = htonl(features->capabilities &
3868 ofputil_capabilities_mask(version));
3871 if (features->capabilities & OFPUTIL_C_STP) {
3872 osf->capabilities |= htonl(OFPC10_STP);
3874 osf->actions = encode_action_bits(features->actions, of10_action_bits);
3877 osf->auxiliary_id = features->auxiliary_id;
3881 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
3882 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
3892 /* Encodes 'pp' into the format required by the switch_features message already
3893 * in 'b', which should have been returned by ofputil_encode_switch_features(),
3894 * and appends the encoded version to 'b'. */
3896 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
3899 const struct ofp_header *oh = b->data;
3901 if (oh->version < OFP13_VERSION) {
3902 ofputil_put_phy_port(oh->version, pp, b);
3906 /* ofputil_port_status */
3908 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
3909 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
3911 ofputil_decode_port_status(const struct ofp_header *oh,
3912 struct ofputil_port_status *ps)
3914 const struct ofp_port_status *ops;
3918 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3919 ofpraw_pull_assert(&b);
3920 ops = ofpbuf_pull(&b, sizeof *ops);
3922 if (ops->reason != OFPPR_ADD &&
3923 ops->reason != OFPPR_DELETE &&
3924 ops->reason != OFPPR_MODIFY) {
3925 return OFPERR_NXBRC_BAD_REASON;
3927 ps->reason = ops->reason;
3929 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
3930 ovs_assert(retval != EOF);
3934 /* Converts the abstract form of a "port status" message in '*ps' into an
3935 * OpenFlow message suitable for 'protocol', and returns that encoded form in
3936 * a buffer owned by the caller. */
3938 ofputil_encode_port_status(const struct ofputil_port_status *ps,
3939 enum ofputil_protocol protocol)
3941 struct ofp_port_status *ops;
3943 enum ofp_version version;
3946 version = ofputil_protocol_to_ofp_version(protocol);
3949 raw = OFPRAW_OFPT10_PORT_STATUS;
3955 raw = OFPRAW_OFPT11_PORT_STATUS;
3962 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
3963 ops = ofpbuf_put_zeros(b, sizeof *ops);
3964 ops->reason = ps->reason;
3965 ofputil_put_phy_port(version, &ps->desc, b);
3966 ofpmsg_update_length(b);
3970 /* ofputil_port_mod */
3972 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
3973 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
3975 ofputil_decode_port_mod(const struct ofp_header *oh,
3976 struct ofputil_port_mod *pm)
3981 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3982 raw = ofpraw_pull_assert(&b);
3984 if (raw == OFPRAW_OFPT10_PORT_MOD) {
3985 const struct ofp10_port_mod *opm = b.data;
3987 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
3988 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
3989 pm->config = ntohl(opm->config) & OFPPC10_ALL;
3990 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
3991 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
3992 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
3993 const struct ofp11_port_mod *opm = b.data;
3996 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4001 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
4002 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4003 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4004 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4006 return OFPERR_OFPBRC_BAD_TYPE;
4009 pm->config &= pm->mask;
4013 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4014 * message suitable for 'protocol', and returns that encoded form in a buffer
4015 * owned by the caller. */
4017 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4018 enum ofputil_protocol protocol)
4020 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4023 switch (ofp_version) {
4024 case OFP10_VERSION: {
4025 struct ofp10_port_mod *opm;
4027 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4028 opm = ofpbuf_put_zeros(b, sizeof *opm);
4029 opm->port_no = htons(ofp_to_u16(pm->port_no));
4030 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4031 opm->config = htonl(pm->config & OFPPC10_ALL);
4032 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4033 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4039 case OFP13_VERSION: {
4040 struct ofp11_port_mod *opm;
4042 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4043 opm = ofpbuf_put_zeros(b, sizeof *opm);
4044 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4045 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
4046 opm->config = htonl(pm->config & OFPPC11_ALL);
4047 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4048 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4058 /* ofputil_table_mod */
4060 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
4061 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4063 ofputil_decode_table_mod(const struct ofp_header *oh,
4064 struct ofputil_table_mod *pm)
4069 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4070 raw = ofpraw_pull_assert(&b);
4072 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
4073 const struct ofp11_table_mod *otm = b.data;
4075 pm->table_id = otm->table_id;
4076 pm->config = ntohl(otm->config);
4078 return OFPERR_OFPBRC_BAD_TYPE;
4084 /* Converts the abstract form of a "table mod" message in '*pm' into an OpenFlow
4085 * message suitable for 'protocol', and returns that encoded form in a buffer
4086 * owned by the caller. */
4088 ofputil_encode_table_mod(const struct ofputil_table_mod *pm,
4089 enum ofputil_protocol protocol)
4091 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4094 switch (ofp_version) {
4095 case OFP10_VERSION: {
4096 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
4097 "(\'-O OpenFlow11\')");
4102 case OFP13_VERSION: {
4103 struct ofp11_table_mod *otm;
4105 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
4106 otm = ofpbuf_put_zeros(b, sizeof *otm);
4107 otm->table_id = pm->table_id;
4108 otm->config = htonl(pm->config);
4118 /* ofputil_role_request */
4120 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
4121 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
4122 * OFPERR_* value. */
4124 ofputil_decode_role_message(const struct ofp_header *oh,
4125 struct ofputil_role_request *rr)
4130 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4131 raw = ofpraw_pull_assert(&b);
4133 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
4134 raw == OFPRAW_OFPT12_ROLE_REPLY) {
4135 const struct ofp12_role_request *orr = b.l3;
4137 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
4138 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
4139 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
4140 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
4141 return OFPERR_OFPRRFC_BAD_ROLE;
4144 rr->role = ntohl(orr->role);
4145 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
4146 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
4147 : orr->generation_id == OVS_BE64_MAX) {
4148 rr->have_generation_id = false;
4149 rr->generation_id = 0;
4151 rr->have_generation_id = true;
4152 rr->generation_id = ntohll(orr->generation_id);
4154 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
4155 raw == OFPRAW_NXT_ROLE_REPLY) {
4156 const struct nx_role_request *nrr = b.l3;
4158 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
4159 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
4160 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
4162 if (nrr->role != htonl(NX_ROLE_OTHER) &&
4163 nrr->role != htonl(NX_ROLE_MASTER) &&
4164 nrr->role != htonl(NX_ROLE_SLAVE)) {
4165 return OFPERR_OFPRRFC_BAD_ROLE;
4168 rr->role = ntohl(nrr->role) + 1;
4169 rr->have_generation_id = false;
4170 rr->generation_id = 0;
4178 /* Returns an encoded form of a role reply suitable for the "request" in a
4179 * buffer owned by the caller. */
4181 ofputil_encode_role_reply(const struct ofp_header *request,
4182 const struct ofputil_role_request *rr)
4187 raw = ofpraw_decode_assert(request);
4188 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
4189 struct ofp12_role_request *orr;
4191 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
4192 orr = ofpbuf_put_zeros(buf, sizeof *orr);
4194 orr->role = htonl(rr->role);
4195 orr->generation_id = htonll(rr->have_generation_id
4198 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
4199 struct nx_role_request *nrr;
4201 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
4202 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
4203 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
4205 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
4206 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
4207 nrr->role = htonl(rr->role - 1);
4216 ofputil_encode_role_status(const struct ofputil_role_status *status,
4217 enum ofputil_protocol protocol)
4220 enum ofp_version version;
4221 struct ofp14_role_status *rstatus;
4223 version = ofputil_protocol_to_ofp_version(protocol);
4224 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0), 0);
4225 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
4226 rstatus->role = htonl(status->role);
4227 rstatus->reason = status->reason;
4228 rstatus->generation_id = htonll(status->generation_id);
4234 ofputil_decode_role_status(const struct ofp_header *oh,
4235 struct ofputil_role_status *rs)
4239 const struct ofp14_role_status *r;
4241 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4242 raw = ofpraw_pull_assert(&b);
4243 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
4246 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
4247 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
4248 r->role != htonl(OFPCR12_ROLE_MASTER) &&
4249 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
4250 return OFPERR_OFPRRFC_BAD_ROLE;
4253 rs->role = ntohl(r->role);
4254 rs->generation_id = ntohll(r->generation_id);
4255 rs->reason = r->reason;
4263 ofputil_put_ofp10_table_stats(const struct ofp12_table_stats *in,
4267 enum ofp10_flow_wildcards wc10;
4268 enum oxm12_ofb_match_fields mf12;
4271 static const struct wc_map wc_map[] = {
4272 { OFPFW10_IN_PORT, OFPXMT12_OFB_IN_PORT },
4273 { OFPFW10_DL_VLAN, OFPXMT12_OFB_VLAN_VID },
4274 { OFPFW10_DL_SRC, OFPXMT12_OFB_ETH_SRC },
4275 { OFPFW10_DL_DST, OFPXMT12_OFB_ETH_DST},
4276 { OFPFW10_DL_TYPE, OFPXMT12_OFB_ETH_TYPE },
4277 { OFPFW10_NW_PROTO, OFPXMT12_OFB_IP_PROTO },
4278 { OFPFW10_TP_SRC, OFPXMT12_OFB_TCP_SRC },
4279 { OFPFW10_TP_DST, OFPXMT12_OFB_TCP_DST },
4280 { OFPFW10_NW_SRC_MASK, OFPXMT12_OFB_IPV4_SRC },
4281 { OFPFW10_NW_DST_MASK, OFPXMT12_OFB_IPV4_DST },
4282 { OFPFW10_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP },
4283 { OFPFW10_NW_TOS, OFPXMT12_OFB_IP_DSCP },
4286 struct ofp10_table_stats *out;
4287 const struct wc_map *p;
4289 out = ofpbuf_put_zeros(buf, sizeof *out);
4290 out->table_id = in->table_id;
4291 ovs_strlcpy(out->name, in->name, sizeof out->name);
4293 for (p = wc_map; p < &wc_map[ARRAY_SIZE(wc_map)]; p++) {
4294 if (in->wildcards & htonll(1ULL << p->mf12)) {
4295 out->wildcards |= htonl(p->wc10);
4298 out->max_entries = in->max_entries;
4299 out->active_count = in->active_count;
4300 put_32aligned_be64(&out->lookup_count, in->lookup_count);
4301 put_32aligned_be64(&out->matched_count, in->matched_count);
4305 oxm12_to_ofp11_flow_match_fields(ovs_be64 oxm12)
4308 enum ofp11_flow_match_fields fmf11;
4309 enum oxm12_ofb_match_fields mf12;
4312 static const struct map map[] = {
4313 { OFPFMF11_IN_PORT, OFPXMT12_OFB_IN_PORT },
4314 { OFPFMF11_DL_VLAN, OFPXMT12_OFB_VLAN_VID },
4315 { OFPFMF11_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP },
4316 { OFPFMF11_DL_TYPE, OFPXMT12_OFB_ETH_TYPE },
4317 { OFPFMF11_NW_TOS, OFPXMT12_OFB_IP_DSCP },
4318 { OFPFMF11_NW_PROTO, OFPXMT12_OFB_IP_PROTO },
4319 { OFPFMF11_TP_SRC, OFPXMT12_OFB_TCP_SRC },
4320 { OFPFMF11_TP_DST, OFPXMT12_OFB_TCP_DST },
4321 { OFPFMF11_MPLS_LABEL, OFPXMT12_OFB_MPLS_LABEL },
4322 { OFPFMF11_MPLS_TC, OFPXMT12_OFB_MPLS_TC },
4323 /* I don't know what OFPFMF11_TYPE means. */
4324 { OFPFMF11_DL_SRC, OFPXMT12_OFB_ETH_SRC },
4325 { OFPFMF11_DL_DST, OFPXMT12_OFB_ETH_DST },
4326 { OFPFMF11_NW_SRC, OFPXMT12_OFB_IPV4_SRC },
4327 { OFPFMF11_NW_DST, OFPXMT12_OFB_IPV4_DST },
4328 { OFPFMF11_METADATA, OFPXMT12_OFB_METADATA },
4331 const struct map *p;
4335 for (p = map; p < &map[ARRAY_SIZE(map)]; p++) {
4336 if (oxm12 & htonll(1ULL << p->mf12)) {
4340 return htonl(fmf11);
4344 ofputil_put_ofp11_table_stats(const struct ofp12_table_stats *in,
4347 struct ofp11_table_stats *out;
4349 out = ofpbuf_put_zeros(buf, sizeof *out);
4350 out->table_id = in->table_id;
4351 ovs_strlcpy(out->name, in->name, sizeof out->name);
4352 out->wildcards = oxm12_to_ofp11_flow_match_fields(in->wildcards);
4353 out->match = oxm12_to_ofp11_flow_match_fields(in->match);
4354 out->instructions = in->instructions;
4355 out->write_actions = in->write_actions;
4356 out->apply_actions = in->apply_actions;
4357 out->config = in->config;
4358 out->max_entries = in->max_entries;
4359 out->active_count = in->active_count;
4360 out->lookup_count = in->lookup_count;
4361 out->matched_count = in->matched_count;
4365 ofputil_put_ofp12_table_stats(const struct ofp12_table_stats *in,
4368 struct ofp12_table_stats *out = ofpbuf_put(buf, in, sizeof *in);
4370 /* Trim off OF1.3-only capabilities. */
4371 out->match &= htonll(OFPXMT12_MASK);
4372 out->wildcards &= htonll(OFPXMT12_MASK);
4373 out->write_setfields &= htonll(OFPXMT12_MASK);
4374 out->apply_setfields &= htonll(OFPXMT12_MASK);
4378 ofputil_put_ofp13_table_stats(const struct ofp12_table_stats *in,
4381 struct ofp13_table_stats *out;
4383 /* OF 1.3 splits table features off the ofp_table_stats,
4384 * so there is not much here. */
4386 out = ofpbuf_put_uninit(buf, sizeof *out);
4387 out->table_id = in->table_id;
4388 out->active_count = in->active_count;
4389 out->lookup_count = in->lookup_count;
4390 out->matched_count = in->matched_count;
4394 ofputil_encode_table_stats_reply(const struct ofp12_table_stats stats[], int n,
4395 const struct ofp_header *request)
4397 struct ofpbuf *reply;
4400 reply = ofpraw_alloc_stats_reply(request, n * sizeof *stats);
4402 for (i = 0; i < n; i++) {
4403 switch ((enum ofp_version) request->version) {
4405 ofputil_put_ofp10_table_stats(&stats[i], reply);
4409 ofputil_put_ofp11_table_stats(&stats[i], reply);
4413 ofputil_put_ofp12_table_stats(&stats[i], reply);
4417 ofputil_put_ofp13_table_stats(&stats[i], reply);
4428 /* ofputil_flow_monitor_request */
4430 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
4431 * ofputil_flow_monitor_request in 'rq'.
4433 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
4434 * message. Calling this function multiple times for a single 'msg' iterates
4435 * through the requests. The caller must initially leave 'msg''s layer
4436 * pointers null and not modify them between calls.
4438 * Returns 0 if successful, EOF if no requests were left in this 'msg',
4439 * otherwise an OFPERR_* value. */
4441 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
4444 struct nx_flow_monitor_request *nfmr;
4448 msg->l2 = msg->data;
4449 ofpraw_pull_assert(msg);
4456 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
4458 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %zu "
4459 "leftover bytes at end", msg->size);
4460 return OFPERR_OFPBRC_BAD_LEN;
4463 flags = ntohs(nfmr->flags);
4464 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
4465 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
4466 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
4467 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
4469 return OFPERR_NXBRC_FM_BAD_FLAGS;
4472 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
4473 return OFPERR_NXBRC_MUST_BE_ZERO;
4476 rq->id = ntohl(nfmr->id);
4478 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
4479 rq->table_id = nfmr->table_id;
4481 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
4485 ofputil_append_flow_monitor_request(
4486 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
4488 struct nx_flow_monitor_request *nfmr;
4493 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
4496 start_ofs = msg->size;
4497 ofpbuf_put_zeros(msg, sizeof *nfmr);
4498 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
4500 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
4501 nfmr->id = htonl(rq->id);
4502 nfmr->flags = htons(rq->flags);
4503 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
4504 nfmr->match_len = htons(match_len);
4505 nfmr->table_id = rq->table_id;
4508 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
4509 * into an abstract ofputil_flow_update in 'update'. The caller must have
4510 * initialized update->match to point to space allocated for a match.
4512 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
4513 * actions (except for NXFME_ABBREV, which never includes actions). The caller
4514 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
4515 * will point into the 'ofpacts' buffer.
4517 * Multiple flow updates can be packed into a single OpenFlow message. Calling
4518 * this function multiple times for a single 'msg' iterates through the
4519 * updates. The caller must initially leave 'msg''s layer pointers null and
4520 * not modify them between calls.
4522 * Returns 0 if successful, EOF if no updates were left in this 'msg',
4523 * otherwise an OFPERR_* value. */
4525 ofputil_decode_flow_update(struct ofputil_flow_update *update,
4526 struct ofpbuf *msg, struct ofpbuf *ofpacts)
4528 struct nx_flow_update_header *nfuh;
4529 unsigned int length;
4530 struct ofp_header *oh;
4533 msg->l2 = msg->data;
4534 ofpraw_pull_assert(msg);
4541 if (msg->size < sizeof(struct nx_flow_update_header)) {
4548 update->event = ntohs(nfuh->event);
4549 length = ntohs(nfuh->length);
4550 if (length > msg->size || length % 8) {
4554 if (update->event == NXFME_ABBREV) {
4555 struct nx_flow_update_abbrev *nfua;
4557 if (length != sizeof *nfua) {
4561 nfua = ofpbuf_pull(msg, sizeof *nfua);
4562 update->xid = nfua->xid;
4564 } else if (update->event == NXFME_ADDED
4565 || update->event == NXFME_DELETED
4566 || update->event == NXFME_MODIFIED) {
4567 struct nx_flow_update_full *nfuf;
4568 unsigned int actions_len;
4569 unsigned int match_len;
4572 if (length < sizeof *nfuf) {
4576 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
4577 match_len = ntohs(nfuf->match_len);
4578 if (sizeof *nfuf + match_len > length) {
4582 update->reason = ntohs(nfuf->reason);
4583 update->idle_timeout = ntohs(nfuf->idle_timeout);
4584 update->hard_timeout = ntohs(nfuf->hard_timeout);
4585 update->table_id = nfuf->table_id;
4586 update->cookie = nfuf->cookie;
4587 update->priority = ntohs(nfuf->priority);
4589 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
4594 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
4595 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
4601 update->ofpacts = ofpacts->data;
4602 update->ofpacts_len = ofpacts->size;
4605 VLOG_WARN_RL(&bad_ofmsg_rl,
4606 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
4607 ntohs(nfuh->event));
4608 return OFPERR_NXBRC_FM_BAD_EVENT;
4612 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %zu "
4613 "leftover bytes at end", msg->size);
4614 return OFPERR_OFPBRC_BAD_LEN;
4618 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
4620 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
4622 return ntohl(cancel->id);
4626 ofputil_encode_flow_monitor_cancel(uint32_t id)
4628 struct nx_flow_monitor_cancel *nfmc;
4631 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
4632 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
4633 nfmc->id = htonl(id);
4638 ofputil_start_flow_update(struct list *replies)
4642 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
4646 list_push_back(replies, &msg->list_node);
4650 ofputil_append_flow_update(const struct ofputil_flow_update *update,
4651 struct list *replies)
4653 struct nx_flow_update_header *nfuh;
4656 enum ofp_version version;
4658 msg = ofpbuf_from_list(list_back(replies));
4659 start_ofs = msg->size;
4660 version = ((struct ofp_header *)msg->l2)->version;
4662 if (update->event == NXFME_ABBREV) {
4663 struct nx_flow_update_abbrev *nfua;
4665 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
4666 nfua->xid = update->xid;
4668 struct nx_flow_update_full *nfuf;
4671 ofpbuf_put_zeros(msg, sizeof *nfuf);
4672 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
4673 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
4675 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
4676 nfuf->reason = htons(update->reason);
4677 nfuf->priority = htons(update->priority);
4678 nfuf->idle_timeout = htons(update->idle_timeout);
4679 nfuf->hard_timeout = htons(update->hard_timeout);
4680 nfuf->match_len = htons(match_len);
4681 nfuf->table_id = update->table_id;
4682 nfuf->cookie = update->cookie;
4685 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
4686 nfuh->length = htons(msg->size - start_ofs);
4687 nfuh->event = htons(update->event);
4689 ofpmp_postappend(replies, start_ofs);
4693 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
4694 enum ofputil_protocol protocol)
4696 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4700 size = po->ofpacts_len;
4701 if (po->buffer_id == UINT32_MAX) {
4702 size += po->packet_len;
4705 switch (ofp_version) {
4706 case OFP10_VERSION: {
4707 struct ofp10_packet_out *opo;
4710 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
4711 ofpbuf_put_zeros(msg, sizeof *opo);
4712 actions_ofs = msg->size;
4713 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
4717 opo->buffer_id = htonl(po->buffer_id);
4718 opo->in_port = htons(ofp_to_u16(po->in_port));
4719 opo->actions_len = htons(msg->size - actions_ofs);
4725 case OFP13_VERSION: {
4726 struct ofp11_packet_out *opo;
4729 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
4730 ofpbuf_put_zeros(msg, sizeof *opo);
4731 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
4734 opo->buffer_id = htonl(po->buffer_id);
4735 opo->in_port = ofputil_port_to_ofp11(po->in_port);
4736 opo->actions_len = htons(len);
4744 if (po->buffer_id == UINT32_MAX) {
4745 ofpbuf_put(msg, po->packet, po->packet_len);
4748 ofpmsg_update_length(msg);
4753 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
4755 make_echo_request(enum ofp_version ofp_version)
4757 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
4761 /* Creates and returns an OFPT_ECHO_REPLY message matching the
4762 * OFPT_ECHO_REQUEST message in 'rq'. */
4764 make_echo_reply(const struct ofp_header *rq)
4766 struct ofpbuf rq_buf;
4767 struct ofpbuf *reply;
4769 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
4770 ofpraw_pull_assert(&rq_buf);
4772 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
4773 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
4778 ofputil_encode_barrier_request(enum ofp_version ofp_version)
4782 switch (ofp_version) {
4786 type = OFPRAW_OFPT11_BARRIER_REQUEST;
4790 type = OFPRAW_OFPT10_BARRIER_REQUEST;
4797 return ofpraw_alloc(type, ofp_version, 0);
4801 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
4803 switch (flags & OFPC_FRAG_MASK) {
4804 case OFPC_FRAG_NORMAL: return "normal";
4805 case OFPC_FRAG_DROP: return "drop";
4806 case OFPC_FRAG_REASM: return "reassemble";
4807 case OFPC_FRAG_NX_MATCH: return "nx-match";
4814 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
4816 if (!strcasecmp(s, "normal")) {
4817 *flags = OFPC_FRAG_NORMAL;
4818 } else if (!strcasecmp(s, "drop")) {
4819 *flags = OFPC_FRAG_DROP;
4820 } else if (!strcasecmp(s, "reassemble")) {
4821 *flags = OFPC_FRAG_REASM;
4822 } else if (!strcasecmp(s, "nx-match")) {
4823 *flags = OFPC_FRAG_NX_MATCH;
4830 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
4831 * port number and stores the latter in '*ofp10_port', for the purpose of
4832 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
4833 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
4835 * See the definition of OFP11_MAX for an explanation of the mapping. */
4837 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
4839 uint32_t ofp11_port_h = ntohl(ofp11_port);
4841 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
4842 *ofp10_port = u16_to_ofp(ofp11_port_h);
4844 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
4845 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
4848 *ofp10_port = OFPP_NONE;
4849 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
4850 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
4851 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
4852 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
4853 return OFPERR_OFPBAC_BAD_OUT_PORT;
4857 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
4858 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
4860 * See the definition of OFP11_MAX for an explanation of the mapping. */
4862 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
4864 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
4865 ? ofp_to_u16(ofp10_port)
4866 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
4869 #define OFPUTIL_NAMED_PORTS \
4870 OFPUTIL_NAMED_PORT(IN_PORT) \
4871 OFPUTIL_NAMED_PORT(TABLE) \
4872 OFPUTIL_NAMED_PORT(NORMAL) \
4873 OFPUTIL_NAMED_PORT(FLOOD) \
4874 OFPUTIL_NAMED_PORT(ALL) \
4875 OFPUTIL_NAMED_PORT(CONTROLLER) \
4876 OFPUTIL_NAMED_PORT(LOCAL) \
4877 OFPUTIL_NAMED_PORT(ANY)
4879 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
4880 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
4881 OFPUTIL_NAMED_PORTS \
4882 OFPUTIL_NAMED_PORT(NONE)
4884 /* Stores the port number represented by 's' into '*portp'. 's' may be an
4885 * integer or, for reserved ports, the standard OpenFlow name for the port
4888 * Returns true if successful, false if 's' is not a valid OpenFlow port number
4889 * or name. The caller should issue an error message in this case, because
4890 * this function usually does not. (This gives the caller an opportunity to
4891 * look up the port name another way, e.g. by contacting the switch and listing
4892 * the names of all its ports).
4894 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
4895 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
4896 * range as described in include/openflow/openflow-1.1.h. */
4898 ofputil_port_from_string(const char *s, ofp_port_t *portp)
4903 if (str_to_uint(s, 10, &port32)) {
4904 if (port32 < ofp_to_u16(OFPP_MAX)) {
4906 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
4907 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
4908 "be translated to %u when talking to an OF1.1 or "
4909 "later controller", port32, port32 + OFPP11_OFFSET);
4910 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
4911 char name[OFP_MAX_PORT_NAME_LEN];
4913 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
4914 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
4915 "for compatibility with OpenFlow 1.1 and later",
4917 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
4918 VLOG_WARN("port %u is outside the supported range 0 through "
4919 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
4920 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
4923 port32 -= OFPP11_OFFSET;
4926 *portp = u16_to_ofp(port32);
4933 static const struct pair pairs[] = {
4934 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
4935 OFPUTIL_NAMED_PORTS_WITH_NONE
4936 #undef OFPUTIL_NAMED_PORT
4938 const struct pair *p;
4940 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
4941 if (!strcasecmp(s, p->name)) {
4950 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
4951 * Most ports' string representation is just the port number, but for special
4952 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
4954 ofputil_format_port(ofp_port_t port, struct ds *s)
4956 char name[OFP_MAX_PORT_NAME_LEN];
4958 ofputil_port_to_string(port, name, sizeof name);
4959 ds_put_cstr(s, name);
4962 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
4963 * representation of OpenFlow port number 'port'. Most ports are represented
4964 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
4965 * by name, e.g. "LOCAL". */
4967 ofputil_port_to_string(ofp_port_t port,
4968 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
4971 #define OFPUTIL_NAMED_PORT(NAME) \
4973 ovs_strlcpy(namebuf, #NAME, bufsize); \
4976 #undef OFPUTIL_NAMED_PORT
4979 snprintf(namebuf, bufsize, "%"PRIu16, port);
4984 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
4985 * integer or, for reserved group IDs, the standard OpenFlow name for the group
4986 * (either "ANY" or "ALL").
4988 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
4991 ofputil_group_from_string(const char *s, uint32_t *group_idp)
4993 if (!strcasecmp(s, "any")) {
4994 *group_idp = OFPG11_ANY;
4995 } else if (!strcasecmp(s, "all")) {
4996 *group_idp = OFPG11_ALL;
4997 } else if (!str_to_uint(s, 10, group_idp)) {
4998 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
4999 "32-bit nonnegative integers or the keywords ANY or "
5007 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
5008 * Most groups' string representation is just the number, but for special
5009 * groups, e.g. OFPG11_ALL, it is the name, e.g. "ALL". */
5011 ofputil_format_group(uint32_t group_id, struct ds *s)
5013 char name[MAX_GROUP_NAME_LEN];
5015 ofputil_group_to_string(group_id, name, sizeof name);
5016 ds_put_cstr(s, name);
5020 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
5021 * representation of OpenFlow group ID 'group_id'. Most group are represented
5022 * as just their number, but special groups, e.g. OFPG11_ALL, are represented
5023 * by name, e.g. "ALL". */
5025 ofputil_group_to_string(uint32_t group_id,
5026 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
5030 ovs_strlcpy(namebuf, "ALL", bufsize);
5034 ovs_strlcpy(namebuf, "ANY", bufsize);
5038 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
5043 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
5044 * 'ofp_version', tries to pull the first element from the array. If
5045 * successful, initializes '*pp' with an abstract representation of the
5046 * port and returns 0. If no ports remain to be decoded, returns EOF.
5047 * On an error, returns a positive OFPERR_* value. */
5049 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
5050 struct ofputil_phy_port *pp)
5052 switch (ofp_version) {
5053 case OFP10_VERSION: {
5054 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
5055 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
5059 case OFP13_VERSION: {
5060 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
5061 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
5068 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
5069 * 'ofp_version', returns the number of elements. */
5070 size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *b)
5072 return b->size / ofputil_get_phy_port_size(ofp_version);
5075 /* ofp-util.def lists the mapping from names to action. */
5076 static const char *const names[OFPUTIL_N_ACTIONS] = {
5078 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME,
5079 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
5080 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
5081 #include "ofp-util.def"
5084 /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if
5085 * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1
5086 * if 'name' is not the name of any action. */
5088 ofputil_action_code_from_name(const char *name)
5090 const char *const *p;
5092 for (p = names; p < &names[ARRAY_SIZE(names)]; p++) {
5093 if (*p && !strcasecmp(name, *p)) {
5100 /* Returns name corresponding to the 'enum ofputil_action_code',
5101 * or "Unkonwn action", if the name is not available. */
5103 ofputil_action_name_from_code(enum ofputil_action_code code)
5105 return code < (int)OFPUTIL_N_ACTIONS && names[code] ? names[code]
5109 /* Appends an action of the type specified by 'code' to 'buf' and returns the
5110 * action. Initializes the parts of 'action' that identify it as having type
5111 * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that
5112 * have variable length, the length used and cleared is that of struct
5115 ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf)
5118 case OFPUTIL_ACTION_INVALID:
5121 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
5122 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
5123 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
5124 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
5125 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
5126 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
5127 #include "ofp-util.def"
5132 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
5134 ofputil_init_##ENUM(struct STRUCT *s) \
5136 memset(s, 0, sizeof *s); \
5137 s->type = htons(ENUM); \
5138 s->len = htons(sizeof *s); \
5142 ofputil_put_##ENUM(struct ofpbuf *buf) \
5144 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
5145 ofputil_init_##ENUM(s); \
5148 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
5149 OFPAT10_ACTION(ENUM, STRUCT, NAME)
5150 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
5152 ofputil_init_##ENUM(struct STRUCT *s) \
5154 memset(s, 0, sizeof *s); \
5155 s->type = htons(OFPAT10_VENDOR); \
5156 s->len = htons(sizeof *s); \
5157 s->vendor = htonl(NX_VENDOR_ID); \
5158 s->subtype = htons(ENUM); \
5162 ofputil_put_##ENUM(struct ofpbuf *buf) \
5164 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
5165 ofputil_init_##ENUM(s); \
5168 #include "ofp-util.def"
5171 ofputil_normalize_match__(struct match *match, bool may_log)
5174 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
5175 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
5176 MAY_NW_PROTO = 1 << 2, /* nw_proto */
5177 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
5178 MAY_ARP_SHA = 1 << 4, /* arp_sha */
5179 MAY_ARP_THA = 1 << 5, /* arp_tha */
5180 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
5181 MAY_ND_TARGET = 1 << 7, /* nd_target */
5182 MAY_MPLS = 1 << 8, /* mpls label and tc */
5185 struct flow_wildcards wc;
5187 /* Figure out what fields may be matched. */
5188 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
5189 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
5190 if (match->flow.nw_proto == IPPROTO_TCP ||
5191 match->flow.nw_proto == IPPROTO_UDP ||
5192 match->flow.nw_proto == IPPROTO_SCTP ||
5193 match->flow.nw_proto == IPPROTO_ICMP) {
5194 may_match |= MAY_TP_ADDR;
5196 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
5197 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
5198 if (match->flow.nw_proto == IPPROTO_TCP ||
5199 match->flow.nw_proto == IPPROTO_UDP ||
5200 match->flow.nw_proto == IPPROTO_SCTP) {
5201 may_match |= MAY_TP_ADDR;
5202 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
5203 may_match |= MAY_TP_ADDR;
5204 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
5205 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
5206 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
5207 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
5210 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
5211 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
5212 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
5213 } else if (eth_type_mpls(match->flow.dl_type)) {
5214 may_match = MAY_MPLS;
5219 /* Clear the fields that may not be matched. */
5221 if (!(may_match & MAY_NW_ADDR)) {
5222 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
5224 if (!(may_match & MAY_TP_ADDR)) {
5225 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
5227 if (!(may_match & MAY_NW_PROTO)) {
5228 wc.masks.nw_proto = 0;
5230 if (!(may_match & MAY_IPVx)) {
5231 wc.masks.nw_tos = 0;
5232 wc.masks.nw_ttl = 0;
5234 if (!(may_match & MAY_ARP_SHA)) {
5235 memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN);
5237 if (!(may_match & MAY_ARP_THA)) {
5238 memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN);
5240 if (!(may_match & MAY_IPV6)) {
5241 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
5242 wc.masks.ipv6_label = htonl(0);
5244 if (!(may_match & MAY_ND_TARGET)) {
5245 wc.masks.nd_target = in6addr_any;
5247 if (!(may_match & MAY_MPLS)) {
5248 wc.masks.mpls_lse = htonl(0);
5251 /* Log any changes. */
5252 if (!flow_wildcards_equal(&wc, &match->wc)) {
5253 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
5254 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
5257 match_zero_wildcarded_fields(match);
5260 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
5261 VLOG_INFO("normalization changed ofp_match, details:");
5262 VLOG_INFO(" pre: %s", pre);
5263 VLOG_INFO("post: %s", post);
5270 /* "Normalizes" the wildcards in 'match'. That means:
5272 * 1. If the type of level N is known, then only the valid fields for that
5273 * level may be specified. For example, ARP does not have a TOS field,
5274 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
5275 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
5276 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
5279 * 2. If the type of level N is not known (or not understood by Open
5280 * vSwitch), then no fields at all for that level may be specified. For
5281 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
5282 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
5285 * If this function changes 'match', it logs a rate-limited informational
5288 ofputil_normalize_match(struct match *match)
5290 ofputil_normalize_match__(match, true);
5293 /* Same as ofputil_normalize_match() without the logging. Thus, this function
5294 * is suitable for a program's internal use, whereas ofputil_normalize_match()
5295 * sense for use on flows received from elsewhere (so that a bug in the program
5296 * that sent them can be reported and corrected). */
5298 ofputil_normalize_match_quiet(struct match *match)
5300 ofputil_normalize_match__(match, false);
5303 /* Parses a key or a key-value pair from '*stringp'.
5305 * On success: Stores the key into '*keyp'. Stores the value, if present, into
5306 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
5307 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
5308 * are substrings of '*stringp' created by replacing some of its bytes by null
5309 * terminators. Returns true.
5311 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
5312 * NULL and returns false. */
5314 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
5316 char *pos, *key, *value;
5320 pos += strspn(pos, ", \t\r\n");
5322 *keyp = *valuep = NULL;
5327 key_len = strcspn(pos, ":=(, \t\r\n");
5328 if (key[key_len] == ':' || key[key_len] == '=') {
5329 /* The value can be separated by a colon. */
5332 value = key + key_len + 1;
5333 value_len = strcspn(value, ", \t\r\n");
5334 pos = value + value_len + (value[value_len] != '\0');
5335 value[value_len] = '\0';
5336 } else if (key[key_len] == '(') {
5337 /* The value can be surrounded by balanced parentheses. The outermost
5338 * set of parentheses is removed. */
5342 value = key + key_len + 1;
5343 for (value_len = 0; level > 0; value_len++) {
5344 switch (value[value_len]) {
5358 value[value_len - 1] = '\0';
5359 pos = value + value_len;
5361 /* There might be no value at all. */
5362 value = key + key_len; /* Will become the empty string below. */
5363 pos = key + key_len + (key[key_len] != '\0');
5365 key[key_len] = '\0';
5373 /* Encode a dump ports request for 'port', the encoded message
5374 * will be for Open Flow version 'ofp_version'. Returns message
5375 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
5377 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
5379 struct ofpbuf *request;
5381 switch (ofp_version) {
5382 case OFP10_VERSION: {
5383 struct ofp10_port_stats_request *req;
5384 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
5385 req = ofpbuf_put_zeros(request, sizeof *req);
5386 req->port_no = htons(ofp_to_u16(port));
5391 case OFP13_VERSION: {
5392 struct ofp11_port_stats_request *req;
5393 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
5394 req = ofpbuf_put_zeros(request, sizeof *req);
5395 req->port_no = ofputil_port_to_ofp11(port);
5406 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
5407 struct ofp10_port_stats *ps10)
5409 ps10->port_no = htons(ofp_to_u16(ops->port_no));
5410 memset(ps10->pad, 0, sizeof ps10->pad);
5411 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
5412 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
5413 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
5414 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
5415 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
5416 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
5417 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
5418 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
5419 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
5420 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
5421 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
5422 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
5426 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
5427 struct ofp11_port_stats *ps11)
5429 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
5430 memset(ps11->pad, 0, sizeof ps11->pad);
5431 ps11->rx_packets = htonll(ops->stats.rx_packets);
5432 ps11->tx_packets = htonll(ops->stats.tx_packets);
5433 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
5434 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
5435 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
5436 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
5437 ps11->rx_errors = htonll(ops->stats.rx_errors);
5438 ps11->tx_errors = htonll(ops->stats.tx_errors);
5439 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
5440 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
5441 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
5442 ps11->collisions = htonll(ops->stats.collisions);
5446 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
5447 struct ofp13_port_stats *ps13)
5449 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
5450 ps13->duration_sec = htonl(ops->duration_sec);
5451 ps13->duration_nsec = htonl(ops->duration_nsec);
5455 /* Encode a ports stat for 'ops' and append it to 'replies'. */
5457 ofputil_append_port_stat(struct list *replies,
5458 const struct ofputil_port_stats *ops)
5460 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
5461 struct ofp_header *oh = msg->data;
5463 switch ((enum ofp_version)oh->version) {
5464 case OFP13_VERSION: {
5465 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
5466 ofputil_port_stats_to_ofp13(ops, reply);
5470 case OFP11_VERSION: {
5471 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
5472 ofputil_port_stats_to_ofp11(ops, reply);
5476 case OFP10_VERSION: {
5477 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
5478 ofputil_port_stats_to_ofp10(ops, reply);
5488 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
5489 const struct ofp10_port_stats *ps10)
5491 memset(ops, 0, sizeof *ops);
5493 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
5494 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
5495 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
5496 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
5497 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
5498 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
5499 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
5500 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
5501 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
5502 ops->stats.rx_frame_errors =
5503 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
5504 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
5505 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
5506 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
5507 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
5513 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
5514 const struct ofp11_port_stats *ps11)
5518 memset(ops, 0, sizeof *ops);
5519 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
5524 ops->stats.rx_packets = ntohll(ps11->rx_packets);
5525 ops->stats.tx_packets = ntohll(ps11->tx_packets);
5526 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
5527 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
5528 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
5529 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
5530 ops->stats.rx_errors = ntohll(ps11->rx_errors);
5531 ops->stats.tx_errors = ntohll(ps11->tx_errors);
5532 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
5533 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
5534 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
5535 ops->stats.collisions = ntohll(ps11->collisions);
5536 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
5542 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
5543 const struct ofp13_port_stats *ps13)
5545 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
5547 ops->duration_sec = ntohl(ps13->duration_sec);
5548 ops->duration_nsec = ntohl(ps13->duration_nsec);
5554 ofputil_get_port_stats_size(enum ofp_version ofp_version)
5556 switch (ofp_version) {
5558 return sizeof(struct ofp10_port_stats);
5561 return sizeof(struct ofp11_port_stats);
5563 return sizeof(struct ofp13_port_stats);
5569 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
5572 ofputil_count_port_stats(const struct ofp_header *oh)
5576 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5577 ofpraw_pull_assert(&b);
5579 return b.size / ofputil_get_port_stats_size(oh->version);
5582 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
5583 * ofputil_port_stats in 'ps'.
5585 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
5586 * message. Calling this function multiple times for a single 'msg' iterates
5587 * through the replies. The caller must initially leave 'msg''s layer pointers
5588 * null and not modify them between calls.
5590 * Returns 0 if successful, EOF if no replies were left in this 'msg',
5591 * otherwise a positive errno value. */
5593 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
5599 ? ofpraw_decode(&raw, msg->l2)
5600 : ofpraw_pull(&raw, msg));
5607 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
5608 const struct ofp13_port_stats *ps13;
5610 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
5614 return ofputil_port_stats_from_ofp13(ps, ps13);
5615 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
5616 const struct ofp11_port_stats *ps11;
5618 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
5622 return ofputil_port_stats_from_ofp11(ps, ps11);
5623 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
5624 const struct ofp10_port_stats *ps10;
5626 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
5630 return ofputil_port_stats_from_ofp10(ps, ps10);
5636 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover "
5637 "bytes at end", msg->size);
5638 return OFPERR_OFPBRC_BAD_LEN;
5641 /* Parse a port status request message into a 16 bit OpenFlow 1.0
5642 * port number and stores the latter in '*ofp10_port'.
5643 * Returns 0 if successful, otherwise an OFPERR_* number. */
5645 ofputil_decode_port_stats_request(const struct ofp_header *request,
5646 ofp_port_t *ofp10_port)
5648 switch ((enum ofp_version)request->version) {
5651 case OFP11_VERSION: {
5652 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
5653 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
5656 case OFP10_VERSION: {
5657 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
5658 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
5667 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
5669 ofputil_bucket_list_destroy(struct list *buckets)
5671 struct ofputil_bucket *bucket, *next_bucket;
5673 LIST_FOR_EACH_SAFE (bucket, next_bucket, list_node, buckets) {
5674 list_remove(&bucket->list_node);
5675 free(bucket->ofpacts);
5680 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
5681 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
5684 * Group statistics include packet and byte counts for each group. */
5686 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
5689 struct ofpbuf *request;
5691 switch (ofp_version) {
5693 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
5694 "(\'-O OpenFlow11\')");
5697 case OFP13_VERSION: {
5698 struct ofp11_group_stats_request *req;
5699 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
5700 req = ofpbuf_put_zeros(request, sizeof *req);
5701 req->group_id = htonl(group_id);
5711 /* Returns an OpenFlow group description request for OpenFlow version
5712 * 'ofp_version', that requests stats for group 'group_id'. (Use OFPG_ALL to
5713 * request stats for all groups.)
5715 * Group descriptions include the bucket and action configuration for each
5718 ofputil_encode_group_desc_request(enum ofp_version ofp_version)
5720 struct ofpbuf *request;
5722 switch (ofp_version) {
5724 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
5725 "(\'-O OpenFlow11\')");
5728 case OFP13_VERSION: {
5729 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST, ofp_version, 0);
5740 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *ogs,
5741 size_t base_len, struct list *replies)
5743 struct ofp11_bucket_counter *bc11;
5744 struct ofp11_group_stats *gs11;
5748 length = base_len + sizeof(struct ofp11_bucket_counter) * ogs->n_buckets;
5750 gs11 = ofpmp_append(replies, length);
5751 memset(gs11, 0, base_len);
5752 gs11->length = htons(length);
5753 gs11->group_id = htonl(ogs->group_id);
5754 gs11->ref_count = htonl(ogs->ref_count);
5755 gs11->packet_count = htonll(ogs->packet_count);
5756 gs11->byte_count = htonll(ogs->byte_count);
5758 bc11 = (void *) (((uint8_t *) gs11) + base_len);
5759 for (i = 0; i < ogs->n_buckets; i++) {
5760 const struct bucket_counter *obc = &ogs->bucket_stats[i];
5762 bc11[i].packet_count = htonll(obc->packet_count);
5763 bc11[i].byte_count = htonll(obc->byte_count);
5770 ofputil_append_of13_group_stats(const struct ofputil_group_stats *ogs,
5771 struct list *replies)
5773 struct ofp13_group_stats *gs13;
5775 gs13 = ofputil_group_stats_to_ofp11(ogs, sizeof *gs13, replies);
5776 gs13->duration_sec = htonl(ogs->duration_sec);
5777 gs13->duration_nsec = htonl(ogs->duration_nsec);
5780 /* Encodes 'ogs' properly for the format of the list of group statistics
5781 * replies already begun in 'replies' and appends it to the list. 'replies'
5782 * must have originally been initialized with ofpmp_init(). */
5784 ofputil_append_group_stats(struct list *replies,
5785 const struct ofputil_group_stats *ogs)
5787 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
5788 struct ofp_header *oh = msg->data;
5790 switch ((enum ofp_version)oh->version) {
5793 ofputil_group_stats_to_ofp11(ogs, sizeof(struct ofp11_group_stats),
5798 ofputil_append_of13_group_stats(ogs, replies);
5807 /* Returns an OpenFlow group features request for OpenFlow version
5810 ofputil_encode_group_features_request(enum ofp_version ofp_version)
5812 struct ofpbuf *request = NULL;
5814 switch (ofp_version) {
5817 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
5818 "(\'-O OpenFlow12\')");
5820 case OFP13_VERSION: {
5821 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
5832 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
5833 * group features request 'request'. */
5835 ofputil_encode_group_features_reply(
5836 const struct ofputil_group_features *features,
5837 const struct ofp_header *request)
5839 struct ofp12_group_features_stats *ogf;
5840 struct ofpbuf *reply;
5842 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
5843 request->version, request->xid, 0);
5844 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
5845 ogf->types = htonl(features->types);
5846 ogf->capabilities = htonl(features->capabilities);
5847 ogf->max_groups[0] = htonl(features->max_groups[0]);
5848 ogf->max_groups[1] = htonl(features->max_groups[1]);
5849 ogf->max_groups[2] = htonl(features->max_groups[2]);
5850 ogf->max_groups[3] = htonl(features->max_groups[3]);
5851 ogf->actions[0] = htonl(features->actions[0]);
5852 ogf->actions[1] = htonl(features->actions[1]);
5853 ogf->actions[2] = htonl(features->actions[2]);
5854 ogf->actions[3] = htonl(features->actions[3]);
5859 /* Decodes group features reply 'oh' into 'features'. */
5861 ofputil_decode_group_features_reply(const struct ofp_header *oh,
5862 struct ofputil_group_features *features)
5864 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
5866 features->types = ntohl(ogf->types);
5867 features->capabilities = ntohl(ogf->capabilities);
5868 features->max_groups[0] = ntohl(ogf->max_groups[0]);
5869 features->max_groups[1] = ntohl(ogf->max_groups[1]);
5870 features->max_groups[2] = ntohl(ogf->max_groups[2]);
5871 features->max_groups[3] = ntohl(ogf->max_groups[3]);
5872 features->actions[0] = ntohl(ogf->actions[0]);
5873 features->actions[1] = ntohl(ogf->actions[1]);
5874 features->actions[2] = ntohl(ogf->actions[2]);
5875 features->actions[3] = ntohl(ogf->actions[3]);
5878 /* Parse a group status request message into a 32 bit OpenFlow 1.1
5879 * group ID and stores the latter in '*group_id'.
5880 * Returns 0 if successful, otherwise an OFPERR_* number. */
5882 ofputil_decode_group_stats_request(const struct ofp_header *request,
5885 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
5886 *group_id = ntohl(gsr11->group_id);
5890 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
5891 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
5892 * caller to eventually free.
5894 * Multiple group stats replies can be packed into a single OpenFlow message.
5895 * Calling this function multiple times for a single 'msg' iterates through the
5896 * replies. The caller must initially leave 'msg''s layer pointers null and
5897 * not modify them between calls.
5899 * Returns 0 if successful, EOF if no replies were left in this 'msg',
5900 * otherwise a positive errno value. */
5902 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
5903 struct ofputil_group_stats *gs)
5905 struct ofp11_bucket_counter *obc;
5906 struct ofp11_group_stats *ogs11;
5913 gs->bucket_stats = NULL;
5915 ? ofpraw_decode(&raw, msg->l2)
5916 : ofpraw_pull(&raw, msg));
5925 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
5926 base_len = sizeof *ogs11;
5927 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
5928 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
5929 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
5930 struct ofp13_group_stats *ogs13;
5932 base_len = sizeof *ogs13;
5933 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
5936 gs->duration_sec = ntohl(ogs13->duration_sec);
5937 gs->duration_nsec = ntohl(ogs13->duration_nsec);
5946 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %zu leftover bytes at end",
5947 ofpraw_get_name(raw), msg->size);
5948 return OFPERR_OFPBRC_BAD_LEN;
5950 length = ntohs(ogs11->length);
5951 if (length < sizeof base_len) {
5952 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %zu",
5953 ofpraw_get_name(raw), length);
5954 return OFPERR_OFPBRC_BAD_LEN;
5957 gs->group_id = ntohl(ogs11->group_id);
5958 gs->ref_count = ntohl(ogs11->ref_count);
5959 gs->packet_count = ntohll(ogs11->packet_count);
5960 gs->byte_count = ntohll(ogs11->byte_count);
5962 gs->n_buckets = (length - base_len) / sizeof *obc;
5963 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
5965 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %zu leftover bytes at end",
5966 ofpraw_get_name(raw), msg->size);
5967 return OFPERR_OFPBRC_BAD_LEN;
5970 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
5971 for (i = 0; i < gs->n_buckets; i++) {
5972 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
5973 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
5979 /* Appends a group stats reply that contains the data in 'gds' to those already
5980 * present in the list of ofpbufs in 'replies'. 'replies' should have been
5981 * initialized with ofpmp_init(). */
5983 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
5984 struct list *buckets,
5985 struct list *replies)
5987 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5988 struct ofp11_group_desc_stats *ogds;
5989 struct ofputil_bucket *bucket;
5991 enum ofp_version version = ((struct ofp_header *)reply->data)->version;
5993 start_ogds = reply->size;
5994 ofpbuf_put_zeros(reply, sizeof *ogds);
5995 LIST_FOR_EACH (bucket, list_node, buckets) {
5996 struct ofp11_bucket *ob;
5999 start_ob = reply->size;
6000 ofpbuf_put_zeros(reply, sizeof *ob);
6001 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
6003 ob = ofpbuf_at_assert(reply, start_ob, sizeof *ob);
6004 ob->len = htons(reply->size - start_ob);
6005 ob->weight = htons(bucket->weight);
6006 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
6007 ob->watch_group = htonl(bucket->watch_group);
6009 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
6010 ogds->length = htons(reply->size - start_ogds);
6011 ogds->type = gds->type;
6012 ogds->group_id = htonl(gds->group_id);
6014 ofpmp_postappend(replies, start_ogds);
6018 ofputil_pull_buckets(struct ofpbuf *msg, size_t buckets_length,
6019 enum ofp_version version, struct list *buckets)
6021 struct ofp11_bucket *ob;
6024 while (buckets_length > 0) {
6025 struct ofputil_bucket *bucket;
6026 struct ofpbuf ofpacts;
6030 ob = (buckets_length >= sizeof *ob
6031 ? ofpbuf_try_pull(msg, sizeof *ob)
6034 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %zu leftover bytes",
6038 ob_len = ntohs(ob->len);
6039 if (ob_len < sizeof *ob) {
6040 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
6041 "%zu is not valid", ob_len);
6042 return OFPERR_OFPGMFC_BAD_BUCKET;
6043 } else if (ob_len > buckets_length) {
6044 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
6045 "%zu exceeds remaining buckets data size %zu",
6046 ob_len, buckets_length);
6047 return OFPERR_OFPGMFC_BAD_BUCKET;
6049 buckets_length -= ob_len;
6051 ofpbuf_init(&ofpacts, 0);
6052 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
6055 ofpbuf_uninit(&ofpacts);
6056 ofputil_bucket_list_destroy(buckets);
6060 bucket = xzalloc(sizeof *bucket);
6061 bucket->weight = ntohs(ob->weight);
6062 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
6064 ofpbuf_uninit(&ofpacts);
6065 ofputil_bucket_list_destroy(buckets);
6066 return OFPERR_OFPGMFC_BAD_WATCH;
6068 bucket->watch_group = ntohl(ob->watch_group);
6069 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
6070 bucket->ofpacts_len = ofpacts.size;
6071 list_push_back(buckets, &bucket->list_node);
6077 /* Converts a group description reply in 'msg' into an abstract
6078 * ofputil_group_desc in 'gd'.
6080 * Multiple group description replies can be packed into a single OpenFlow
6081 * message. Calling this function multiple times for a single 'msg' iterates
6082 * through the replies. The caller must initially leave 'msg''s layer pointers
6083 * null and not modify them between calls.
6085 * Returns 0 if successful, EOF if no replies were left in this 'msg',
6086 * otherwise a positive errno value. */
6088 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
6089 struct ofpbuf *msg, enum ofp_version version)
6091 struct ofp11_group_desc_stats *ogds;
6095 ofpraw_pull_assert(msg);
6102 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
6104 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %zu "
6105 "leftover bytes at end", msg->size);
6106 return OFPERR_OFPBRC_BAD_LEN;
6108 gd->type = ogds->type;
6109 gd->group_id = ntohl(ogds->group_id);
6111 length = ntohs(ogds->length);
6112 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
6113 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
6114 "length %zu", length);
6115 return OFPERR_OFPBRC_BAD_LEN;
6118 return ofputil_pull_buckets(msg, length - sizeof *ogds, version,
6122 /* Converts abstract group mod 'gm' into a message for OpenFlow version
6123 * 'ofp_version' and returns the message. */
6125 ofputil_encode_group_mod(enum ofp_version ofp_version,
6126 const struct ofputil_group_mod *gm)
6129 struct ofp11_group_mod *ogm;
6131 size_t start_bucket;
6132 struct ofputil_bucket *bucket;
6133 struct ofp11_bucket *ob;
6135 switch (ofp_version) {
6136 case OFP10_VERSION: {
6137 if (gm->command == OFPGC11_ADD) {
6138 ovs_fatal(0, "add-group needs OpenFlow 1.1 or later "
6139 "(\'-O OpenFlow11\')");
6140 } else if (gm->command == OFPGC11_MODIFY) {
6141 ovs_fatal(0, "mod-group needs OpenFlow 1.1 or later "
6142 "(\'-O OpenFlow11\')");
6144 ovs_fatal(0, "del-groups needs OpenFlow 1.1 or later "
6145 "(\'-O OpenFlow11\')");
6151 case OFP13_VERSION: {
6152 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
6153 start_ogm = b->size;
6154 ofpbuf_put_uninit(b, sizeof *ogm);
6156 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
6157 start_bucket = b->size;
6158 ofpbuf_put_uninit(b, sizeof *ob);
6159 if (bucket->ofpacts && bucket->ofpacts_len) {
6160 ofpacts_put_openflow_actions(bucket->ofpacts,
6161 bucket->ofpacts_len, b,
6164 ob = ofpbuf_at_assert(b, start_bucket, sizeof *ob);
6165 ob->len = htons(b->size - start_bucket);;
6166 ob->weight = htons(bucket->weight);
6167 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
6168 ob->watch_group = htonl(bucket->watch_group);
6170 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
6171 ogm->command = htons(gm->command);
6172 ogm->type = gm->type;
6174 ogm->group_id = htonl(gm->group_id);
6186 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
6187 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
6189 ofputil_decode_group_mod(const struct ofp_header *oh,
6190 struct ofputil_group_mod *gm)
6192 const struct ofp11_group_mod *ogm;
6195 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
6196 ofpraw_pull_assert(&msg);
6198 ogm = ofpbuf_pull(&msg, sizeof *ogm);
6199 gm->command = ntohs(ogm->command);
6200 gm->type = ogm->type;
6201 gm->group_id = ntohl(ogm->group_id);
6203 return ofputil_pull_buckets(&msg, msg.size, oh->version, &gm->buckets);
6206 /* Parse a queue status request message into 'oqsr'.
6207 * Returns 0 if successful, otherwise an OFPERR_* number. */
6209 ofputil_decode_queue_stats_request(const struct ofp_header *request,
6210 struct ofputil_queue_stats_request *oqsr)
6212 switch ((enum ofp_version)request->version) {
6215 case OFP11_VERSION: {
6216 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
6217 oqsr->queue_id = ntohl(qsr11->queue_id);
6218 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
6221 case OFP10_VERSION: {
6222 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
6223 oqsr->queue_id = ntohl(qsr10->queue_id);
6224 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
6225 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
6226 if (oqsr->port_no == OFPP_ALL) {
6227 oqsr->port_no = OFPP_ANY;
6237 /* Encode a queue statsrequest for 'oqsr', the encoded message
6238 * will be fore Open Flow version 'ofp_version'. Returns message
6239 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6241 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
6242 const struct ofputil_queue_stats_request *oqsr)
6244 struct ofpbuf *request;
6246 switch (ofp_version) {
6249 case OFP13_VERSION: {
6250 struct ofp11_queue_stats_request *req;
6251 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
6252 req = ofpbuf_put_zeros(request, sizeof *req);
6253 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
6254 req->queue_id = htonl(oqsr->queue_id);
6257 case OFP10_VERSION: {
6258 struct ofp10_queue_stats_request *req;
6259 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
6260 req = ofpbuf_put_zeros(request, sizeof *req);
6261 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
6262 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
6263 ? OFPP_ALL : oqsr->port_no));
6264 req->queue_id = htonl(oqsr->queue_id);
6275 ofputil_get_queue_stats_size(enum ofp_version ofp_version)
6277 switch (ofp_version) {
6279 return sizeof(struct ofp10_queue_stats);
6282 return sizeof(struct ofp11_queue_stats);
6284 return sizeof(struct ofp13_queue_stats);
6290 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
6293 ofputil_count_queue_stats(const struct ofp_header *oh)
6297 ofpbuf_use_const(&b, oh, ntohs(oh->length));
6298 ofpraw_pull_assert(&b);
6300 return b.size / ofputil_get_queue_stats_size(oh->version);
6304 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
6305 const struct ofp10_queue_stats *qs10)
6307 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
6308 oqs->queue_id = ntohl(qs10->queue_id);
6309 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
6310 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
6311 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
6312 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
6318 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
6319 const struct ofp11_queue_stats *qs11)
6323 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
6328 oqs->queue_id = ntohl(qs11->queue_id);
6329 oqs->tx_bytes = ntohll(qs11->tx_bytes);
6330 oqs->tx_packets = ntohll(qs11->tx_packets);
6331 oqs->tx_errors = ntohll(qs11->tx_errors);
6332 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
6338 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
6339 const struct ofp13_queue_stats *qs13)
6341 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
6343 oqs->duration_sec = ntohl(qs13->duration_sec);
6344 oqs->duration_nsec = ntohl(qs13->duration_nsec);
6350 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
6351 * ofputil_queue_stats in 'qs'.
6353 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
6354 * message. Calling this function multiple times for a single 'msg' iterates
6355 * through the replies. The caller must initially leave 'msg''s layer pointers
6356 * null and not modify them between calls.
6358 * Returns 0 if successful, EOF if no replies were left in this 'msg',
6359 * otherwise a positive errno value. */
6361 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
6367 ? ofpraw_decode(&raw, msg->l2)
6368 : ofpraw_pull(&raw, msg));
6375 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
6376 const struct ofp13_queue_stats *qs13;
6378 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
6382 return ofputil_queue_stats_from_ofp13(qs, qs13);
6383 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
6384 const struct ofp11_queue_stats *qs11;
6386 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
6390 return ofputil_queue_stats_from_ofp11(qs, qs11);
6391 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
6392 const struct ofp10_queue_stats *qs10;
6394 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
6398 return ofputil_queue_stats_from_ofp10(qs, qs10);
6404 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover "
6405 "bytes at end", msg->size);
6406 return OFPERR_OFPBRC_BAD_LEN;
6410 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
6411 struct ofp10_queue_stats *qs10)
6413 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
6414 memset(qs10->pad, 0, sizeof qs10->pad);
6415 qs10->queue_id = htonl(oqs->queue_id);
6416 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
6417 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
6418 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
6422 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
6423 struct ofp11_queue_stats *qs11)
6425 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
6426 qs11->queue_id = htonl(oqs->queue_id);
6427 qs11->tx_bytes = htonll(oqs->tx_bytes);
6428 qs11->tx_packets = htonll(oqs->tx_packets);
6429 qs11->tx_errors = htonll(oqs->tx_errors);
6433 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
6434 struct ofp13_queue_stats *qs13)
6436 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
6437 if (oqs->duration_sec != UINT32_MAX) {
6438 qs13->duration_sec = htonl(oqs->duration_sec);
6439 qs13->duration_nsec = htonl(oqs->duration_nsec);
6441 qs13->duration_sec = OVS_BE32_MAX;
6442 qs13->duration_nsec = OVS_BE32_MAX;
6446 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
6448 ofputil_append_queue_stat(struct list *replies,
6449 const struct ofputil_queue_stats *oqs)
6451 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
6452 struct ofp_header *oh = msg->data;
6454 switch ((enum ofp_version)oh->version) {
6455 case OFP13_VERSION: {
6456 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
6457 ofputil_queue_stats_to_ofp13(oqs, reply);
6462 case OFP11_VERSION: {
6463 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
6464 ofputil_queue_stats_to_ofp11(oqs, reply);
6468 case OFP10_VERSION: {
6469 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
6470 ofputil_queue_stats_to_ofp10(oqs, reply);