2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "ofp-print.h"
22 #include <sys/types.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
27 #include "byte-order.h"
28 #include "classifier.h"
29 #include "dynamic-string.h"
31 #include "meta-flow.h"
32 #include "multipath.h"
36 #include "ofp-actions.h"
37 #include "ofp-errors.h"
42 #include "openflow/netronome-ext.h"
46 #include "tun-metadata.h"
47 #include "unaligned.h"
48 #include "type-props.h"
49 #include "openvswitch/vlog.h"
52 VLOG_DEFINE_THIS_MODULE(ofp_util);
54 /* Rate limit for OpenFlow message parse errors. These always indicate a bug
55 * in the peer and so there's not much point in showing a lot of them. */
56 static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
58 static enum ofputil_table_vacancy ofputil_decode_table_vacancy(
59 ovs_be32 config, enum ofp_version);
60 static enum ofputil_table_eviction ofputil_decode_table_eviction(
61 ovs_be32 config, enum ofp_version);
62 static ovs_be32 ofputil_encode_table_config(enum ofputil_table_miss,
63 enum ofputil_table_eviction,
64 enum ofputil_table_vacancy,
67 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
68 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
71 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
72 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
73 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
74 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
77 ofputil_wcbits_to_netmask(int wcbits)
80 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
83 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
84 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
85 * between 0 and 32 inclusive.
87 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
88 * still be in the valid range but isn't otherwise meaningful. */
90 ofputil_netmask_to_wcbits(ovs_be32 netmask)
92 return 32 - ip_count_cidr_bits(netmask);
95 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
96 * flow_wildcards in 'wc' for use in struct match. It is the caller's
97 * responsibility to handle the special case where the flow match's dl_vlan is
98 * set to OFP_VLAN_NONE. */
100 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
102 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 35);
104 /* Initialize most of wc. */
105 flow_wildcards_init_catchall(wc);
107 if (!(ofpfw & OFPFW10_IN_PORT)) {
108 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
111 if (!(ofpfw & OFPFW10_NW_TOS)) {
112 wc->masks.nw_tos |= IP_DSCP_MASK;
115 if (!(ofpfw & OFPFW10_NW_PROTO)) {
116 wc->masks.nw_proto = UINT8_MAX;
118 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
119 >> OFPFW10_NW_SRC_SHIFT);
120 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
121 >> OFPFW10_NW_DST_SHIFT);
123 if (!(ofpfw & OFPFW10_TP_SRC)) {
124 wc->masks.tp_src = OVS_BE16_MAX;
126 if (!(ofpfw & OFPFW10_TP_DST)) {
127 wc->masks.tp_dst = OVS_BE16_MAX;
130 if (!(ofpfw & OFPFW10_DL_SRC)) {
131 WC_MASK_FIELD(wc, dl_src);
133 if (!(ofpfw & OFPFW10_DL_DST)) {
134 WC_MASK_FIELD(wc, dl_dst);
136 if (!(ofpfw & OFPFW10_DL_TYPE)) {
137 wc->masks.dl_type = OVS_BE16_MAX;
141 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
142 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
144 if (!(ofpfw & OFPFW10_DL_VLAN)) {
145 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
149 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
151 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
154 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
156 /* Initialize match->wc. */
157 memset(&match->flow, 0, sizeof match->flow);
158 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
160 /* Initialize most of match->flow. */
161 match->flow.nw_src = ofmatch->nw_src;
162 match->flow.nw_dst = ofmatch->nw_dst;
163 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
164 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
165 match->flow.tp_src = ofmatch->tp_src;
166 match->flow.tp_dst = ofmatch->tp_dst;
167 match->flow.dl_src = ofmatch->dl_src;
168 match->flow.dl_dst = ofmatch->dl_dst;
169 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
170 match->flow.nw_proto = ofmatch->nw_proto;
172 /* Translate VLANs. */
173 if (!(ofpfw & OFPFW10_DL_VLAN) &&
174 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
175 /* Match only packets without 802.1Q header.
177 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
179 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
180 * because we can't have a specific PCP without an 802.1Q header.
181 * However, older versions of OVS treated this as matching packets
182 * withut an 802.1Q header, so we do here too. */
183 match->flow.vlan_tci = htons(0);
184 match->wc.masks.vlan_tci = htons(0xffff);
186 ovs_be16 vid, pcp, tci;
189 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
190 hpcp = (ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK;
192 tci = vid | pcp | htons(VLAN_CFI);
193 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
197 match_zero_wildcarded_fields(match);
200 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
202 ofputil_match_to_ofp10_match(const struct match *match,
203 struct ofp10_match *ofmatch)
205 const struct flow_wildcards *wc = &match->wc;
208 /* Figure out most OpenFlow wildcards. */
210 if (!wc->masks.in_port.ofp_port) {
211 ofpfw |= OFPFW10_IN_PORT;
213 if (!wc->masks.dl_type) {
214 ofpfw |= OFPFW10_DL_TYPE;
216 if (!wc->masks.nw_proto) {
217 ofpfw |= OFPFW10_NW_PROTO;
219 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
220 << OFPFW10_NW_SRC_SHIFT);
221 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
222 << OFPFW10_NW_DST_SHIFT);
223 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
224 ofpfw |= OFPFW10_NW_TOS;
226 if (!wc->masks.tp_src) {
227 ofpfw |= OFPFW10_TP_SRC;
229 if (!wc->masks.tp_dst) {
230 ofpfw |= OFPFW10_TP_DST;
232 if (eth_addr_is_zero(wc->masks.dl_src)) {
233 ofpfw |= OFPFW10_DL_SRC;
235 if (eth_addr_is_zero(wc->masks.dl_dst)) {
236 ofpfw |= OFPFW10_DL_DST;
239 /* Translate VLANs. */
240 ofmatch->dl_vlan = htons(0);
241 ofmatch->dl_vlan_pcp = 0;
242 if (match->wc.masks.vlan_tci == htons(0)) {
243 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
244 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
245 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
246 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
248 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
249 ofpfw |= OFPFW10_DL_VLAN;
251 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
254 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
255 ofpfw |= OFPFW10_DL_VLAN_PCP;
257 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
261 /* Compose most of the match structure. */
262 ofmatch->wildcards = htonl(ofpfw);
263 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
264 ofmatch->dl_src = match->flow.dl_src;
265 ofmatch->dl_dst = match->flow.dl_dst;
266 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
267 ofmatch->nw_src = match->flow.nw_src;
268 ofmatch->nw_dst = match->flow.nw_dst;
269 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
270 ofmatch->nw_proto = match->flow.nw_proto;
271 ofmatch->tp_src = match->flow.tp_src;
272 ofmatch->tp_dst = match->flow.tp_dst;
273 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
274 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
278 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
279 uint16_t *padded_match_len)
281 struct ofp11_match_header *omh = buf->data;
284 if (buf->size < sizeof *omh) {
285 return OFPERR_OFPBMC_BAD_LEN;
288 match_len = ntohs(omh->length);
290 switch (ntohs(omh->type)) {
291 case OFPMT_STANDARD: {
292 struct ofp11_match *om;
294 if (match_len != sizeof *om || buf->size < sizeof *om) {
295 return OFPERR_OFPBMC_BAD_LEN;
297 om = ofpbuf_pull(buf, sizeof *om);
298 if (padded_match_len) {
299 *padded_match_len = match_len;
301 return ofputil_match_from_ofp11_match(om, match);
305 if (padded_match_len) {
306 *padded_match_len = ROUND_UP(match_len, 8);
308 return oxm_pull_match(buf, match);
311 return OFPERR_OFPBMC_BAD_TYPE;
315 /* Converts the ofp11_match in 'ofmatch' into a struct match in 'match'.
316 * Returns 0 if successful, otherwise an OFPERR_* value. */
318 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
321 uint16_t wc = ntohl(ofmatch->wildcards);
322 bool ipv4, arp, rarp;
324 match_init_catchall(match);
326 if (!(wc & OFPFW11_IN_PORT)) {
330 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
332 return OFPERR_OFPBMC_BAD_VALUE;
334 match_set_in_port(match, ofp_port);
337 match_set_dl_src_masked(match, ofmatch->dl_src,
338 eth_addr_invert(ofmatch->dl_src_mask));
339 match_set_dl_dst_masked(match, ofmatch->dl_dst,
340 eth_addr_invert(ofmatch->dl_dst_mask));
342 if (!(wc & OFPFW11_DL_VLAN)) {
343 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
344 /* Match only packets without a VLAN tag. */
345 match->flow.vlan_tci = htons(0);
346 match->wc.masks.vlan_tci = OVS_BE16_MAX;
348 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
349 /* Match any packet with a VLAN tag regardless of VID. */
350 match->flow.vlan_tci = htons(VLAN_CFI);
351 match->wc.masks.vlan_tci = htons(VLAN_CFI);
352 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
353 /* Match only packets with the specified VLAN VID. */
354 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
355 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
358 return OFPERR_OFPBMC_BAD_VALUE;
361 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
362 if (ofmatch->dl_vlan_pcp <= 7) {
363 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
365 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
368 return OFPERR_OFPBMC_BAD_VALUE;
374 if (!(wc & OFPFW11_DL_TYPE)) {
375 match_set_dl_type(match,
376 ofputil_dl_type_from_openflow(ofmatch->dl_type));
379 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
380 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
381 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
383 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
384 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
386 return OFPERR_OFPBMC_BAD_VALUE;
389 match_set_nw_dscp(match, ofmatch->nw_tos);
392 if (ipv4 || arp || rarp) {
393 if (!(wc & OFPFW11_NW_PROTO)) {
394 match_set_nw_proto(match, ofmatch->nw_proto);
396 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
397 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
400 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
401 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
402 switch (match->flow.nw_proto) {
404 /* "A.2.3 Flow Match Structures" in OF1.1 says:
406 * The tp_src and tp_dst fields will be ignored unless the
407 * network protocol specified is as TCP, UDP or SCTP.
409 * but I'm pretty sure we should support ICMP too, otherwise
410 * that's a regression from OF1.0. */
411 if (!(wc & OFPFW11_TP_SRC)) {
412 uint16_t icmp_type = ntohs(ofmatch->tp_src);
413 if (icmp_type < 0x100) {
414 match_set_icmp_type(match, icmp_type);
416 return OFPERR_OFPBMC_BAD_FIELD;
419 if (!(wc & OFPFW11_TP_DST)) {
420 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
421 if (icmp_code < 0x100) {
422 match_set_icmp_code(match, icmp_code);
424 return OFPERR_OFPBMC_BAD_FIELD;
432 if (!(wc & (OFPFW11_TP_SRC))) {
433 match_set_tp_src(match, ofmatch->tp_src);
435 if (!(wc & (OFPFW11_TP_DST))) {
436 match_set_tp_dst(match, ofmatch->tp_dst);
441 /* OF1.1 says explicitly to ignore this. */
446 if (eth_type_mpls(match->flow.dl_type)) {
447 if (!(wc & OFPFW11_MPLS_LABEL)) {
448 match_set_mpls_label(match, 0, ofmatch->mpls_label);
450 if (!(wc & OFPFW11_MPLS_TC)) {
451 match_set_mpls_tc(match, 0, ofmatch->mpls_tc);
455 match_set_metadata_masked(match, ofmatch->metadata,
456 ~ofmatch->metadata_mask);
461 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
463 ofputil_match_to_ofp11_match(const struct match *match,
464 struct ofp11_match *ofmatch)
468 memset(ofmatch, 0, sizeof *ofmatch);
469 ofmatch->omh.type = htons(OFPMT_STANDARD);
470 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
472 if (!match->wc.masks.in_port.ofp_port) {
473 wc |= OFPFW11_IN_PORT;
475 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
478 ofmatch->dl_src = match->flow.dl_src;
479 ofmatch->dl_src_mask = eth_addr_invert(match->wc.masks.dl_src);
480 ofmatch->dl_dst = match->flow.dl_dst;
481 ofmatch->dl_dst_mask = eth_addr_invert(match->wc.masks.dl_dst);
483 if (match->wc.masks.vlan_tci == htons(0)) {
484 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
485 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
486 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
487 ofmatch->dl_vlan = htons(OFPVID11_NONE);
488 wc |= OFPFW11_DL_VLAN_PCP;
490 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
491 ofmatch->dl_vlan = htons(OFPVID11_ANY);
493 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
496 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
497 wc |= OFPFW11_DL_VLAN_PCP;
499 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
503 if (!match->wc.masks.dl_type) {
504 wc |= OFPFW11_DL_TYPE;
506 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
509 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
510 wc |= OFPFW11_NW_TOS;
512 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
515 if (!match->wc.masks.nw_proto) {
516 wc |= OFPFW11_NW_PROTO;
518 ofmatch->nw_proto = match->flow.nw_proto;
521 ofmatch->nw_src = match->flow.nw_src;
522 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
523 ofmatch->nw_dst = match->flow.nw_dst;
524 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
526 if (!match->wc.masks.tp_src) {
527 wc |= OFPFW11_TP_SRC;
529 ofmatch->tp_src = match->flow.tp_src;
532 if (!match->wc.masks.tp_dst) {
533 wc |= OFPFW11_TP_DST;
535 ofmatch->tp_dst = match->flow.tp_dst;
538 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_LABEL_MASK))) {
539 wc |= OFPFW11_MPLS_LABEL;
541 ofmatch->mpls_label = htonl(mpls_lse_to_label(
542 match->flow.mpls_lse[0]));
545 if (!(match->wc.masks.mpls_lse[0] & htonl(MPLS_TC_MASK))) {
546 wc |= OFPFW11_MPLS_TC;
548 ofmatch->mpls_tc = mpls_lse_to_tc(match->flow.mpls_lse[0]);
551 ofmatch->metadata = match->flow.metadata;
552 ofmatch->metadata_mask = ~match->wc.masks.metadata;
554 ofmatch->wildcards = htonl(wc);
557 /* Returns the "typical" length of a match for 'protocol', for use in
558 * estimating space to preallocate. */
560 ofputil_match_typical_len(enum ofputil_protocol protocol)
563 case OFPUTIL_P_OF10_STD:
564 case OFPUTIL_P_OF10_STD_TID:
565 return sizeof(struct ofp10_match);
567 case OFPUTIL_P_OF10_NXM:
568 case OFPUTIL_P_OF10_NXM_TID:
569 return NXM_TYPICAL_LEN;
571 case OFPUTIL_P_OF11_STD:
572 return sizeof(struct ofp11_match);
574 case OFPUTIL_P_OF12_OXM:
575 case OFPUTIL_P_OF13_OXM:
576 case OFPUTIL_P_OF14_OXM:
577 case OFPUTIL_P_OF15_OXM:
578 return NXM_TYPICAL_LEN;
585 /* Appends to 'b' an struct ofp11_match_header followed by a match that
586 * expresses 'match' properly for 'protocol', plus enough zero bytes to pad the
587 * data appended out to a multiple of 8. 'protocol' must be one that is usable
588 * in OpenFlow 1.1 or later.
590 * This function can cause 'b''s data to be reallocated.
592 * Returns the number of bytes appended to 'b', excluding the padding. Never
595 ofputil_put_ofp11_match(struct ofpbuf *b, const struct match *match,
596 enum ofputil_protocol protocol)
599 case OFPUTIL_P_OF10_STD:
600 case OFPUTIL_P_OF10_STD_TID:
601 case OFPUTIL_P_OF10_NXM:
602 case OFPUTIL_P_OF10_NXM_TID:
605 case OFPUTIL_P_OF11_STD: {
606 struct ofp11_match *om;
608 /* Make sure that no padding is needed. */
609 BUILD_ASSERT_DECL(sizeof *om % 8 == 0);
611 om = ofpbuf_put_uninit(b, sizeof *om);
612 ofputil_match_to_ofp11_match(match, om);
616 case OFPUTIL_P_OF12_OXM:
617 case OFPUTIL_P_OF13_OXM:
618 case OFPUTIL_P_OF14_OXM:
619 case OFPUTIL_P_OF15_OXM:
620 return oxm_put_match(b, match,
621 ofputil_protocol_to_ofp_version(protocol));
627 /* Given a 'dl_type' value in the format used in struct flow, returns the
628 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
631 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
633 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
634 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
638 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
639 * structure, returns the corresponding 'dl_type' value for use in struct
642 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
644 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
645 ? htons(FLOW_DL_TYPE_NONE)
651 struct proto_abbrev {
652 enum ofputil_protocol protocol;
656 /* Most users really don't care about some of the differences between
657 * protocols. These abbreviations help with that. */
658 static const struct proto_abbrev proto_abbrevs[] = {
659 { OFPUTIL_P_ANY, "any" },
660 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
661 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
662 { OFPUTIL_P_ANY_OXM, "OXM" },
664 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
666 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
675 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
677 /* Returns the set of ofputil_protocols that are supported with the given
678 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
679 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
680 * if 'version' is not supported or outside the valid range. */
681 enum ofputil_protocol
682 ofputil_protocols_from_ofp_version(enum ofp_version version)
686 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
688 return OFPUTIL_P_OF11_STD;
690 return OFPUTIL_P_OF12_OXM;
692 return OFPUTIL_P_OF13_OXM;
694 return OFPUTIL_P_OF14_OXM;
696 return OFPUTIL_P_OF15_OXM;
702 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
703 * connection that has negotiated the given 'version'. 'version' should
704 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
705 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
706 * outside the valid range. */
707 enum ofputil_protocol
708 ofputil_protocol_from_ofp_version(enum ofp_version version)
710 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
713 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
714 * etc.) that corresponds to 'protocol'. */
716 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
719 case OFPUTIL_P_OF10_STD:
720 case OFPUTIL_P_OF10_STD_TID:
721 case OFPUTIL_P_OF10_NXM:
722 case OFPUTIL_P_OF10_NXM_TID:
723 return OFP10_VERSION;
724 case OFPUTIL_P_OF11_STD:
725 return OFP11_VERSION;
726 case OFPUTIL_P_OF12_OXM:
727 return OFP12_VERSION;
728 case OFPUTIL_P_OF13_OXM:
729 return OFP13_VERSION;
730 case OFPUTIL_P_OF14_OXM:
731 return OFP14_VERSION;
732 case OFPUTIL_P_OF15_OXM:
733 return OFP15_VERSION;
739 /* Returns a bitmap of OpenFlow versions that are supported by at
740 * least one of the 'protocols'. */
742 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
746 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
747 enum ofputil_protocol protocol = rightmost_1bit(protocols);
749 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
755 /* Returns the set of protocols that are supported on top of the
756 * OpenFlow versions included in 'bitmap'. */
757 enum ofputil_protocol
758 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
760 enum ofputil_protocol protocols = 0;
762 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
763 enum ofp_version version = rightmost_1bit_idx(bitmap);
765 protocols |= ofputil_protocols_from_ofp_version(version);
771 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
774 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
776 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
779 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
780 * extension turned on or off if 'enable' is true or false, respectively.
782 * This extension is only useful for protocols whose "standard" version does
783 * not allow specific tables to be modified. In particular, this is true of
784 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
785 * specifies a table ID and so there is no need for such an extension. When
786 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
787 * extension, this function just returns its 'protocol' argument unchanged
788 * regardless of the value of 'enable'. */
789 enum ofputil_protocol
790 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
793 case OFPUTIL_P_OF10_STD:
794 case OFPUTIL_P_OF10_STD_TID:
795 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
797 case OFPUTIL_P_OF10_NXM:
798 case OFPUTIL_P_OF10_NXM_TID:
799 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
801 case OFPUTIL_P_OF11_STD:
802 return OFPUTIL_P_OF11_STD;
804 case OFPUTIL_P_OF12_OXM:
805 return OFPUTIL_P_OF12_OXM;
807 case OFPUTIL_P_OF13_OXM:
808 return OFPUTIL_P_OF13_OXM;
810 case OFPUTIL_P_OF14_OXM:
811 return OFPUTIL_P_OF14_OXM;
813 case OFPUTIL_P_OF15_OXM:
814 return OFPUTIL_P_OF15_OXM;
821 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
822 * some extension to a standard protocol version, the return value is the
823 * standard version of that protocol without any extension. If 'protocol' is a
824 * standard protocol version, returns 'protocol' unchanged. */
825 enum ofputil_protocol
826 ofputil_protocol_to_base(enum ofputil_protocol protocol)
828 return ofputil_protocol_set_tid(protocol, false);
831 /* Returns 'new_base' with any extensions taken from 'cur'. */
832 enum ofputil_protocol
833 ofputil_protocol_set_base(enum ofputil_protocol cur,
834 enum ofputil_protocol new_base)
836 bool tid = (cur & OFPUTIL_P_TID) != 0;
839 case OFPUTIL_P_OF10_STD:
840 case OFPUTIL_P_OF10_STD_TID:
841 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
843 case OFPUTIL_P_OF10_NXM:
844 case OFPUTIL_P_OF10_NXM_TID:
845 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
847 case OFPUTIL_P_OF11_STD:
848 return ofputil_protocol_set_tid(OFPUTIL_P_OF11_STD, tid);
850 case OFPUTIL_P_OF12_OXM:
851 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
853 case OFPUTIL_P_OF13_OXM:
854 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
856 case OFPUTIL_P_OF14_OXM:
857 return ofputil_protocol_set_tid(OFPUTIL_P_OF14_OXM, tid);
859 case OFPUTIL_P_OF15_OXM:
860 return ofputil_protocol_set_tid(OFPUTIL_P_OF15_OXM, tid);
867 /* Returns a string form of 'protocol', if a simple form exists (that is, if
868 * 'protocol' is either a single protocol or it is a combination of protocols
869 * that have a single abbreviation). Otherwise, returns NULL. */
871 ofputil_protocol_to_string(enum ofputil_protocol protocol)
873 const struct proto_abbrev *p;
875 /* Use a "switch" statement for single-bit names so that we get a compiler
876 * warning if we forget any. */
878 case OFPUTIL_P_OF10_NXM:
879 return "NXM-table_id";
881 case OFPUTIL_P_OF10_NXM_TID:
882 return "NXM+table_id";
884 case OFPUTIL_P_OF10_STD:
885 return "OpenFlow10-table_id";
887 case OFPUTIL_P_OF10_STD_TID:
888 return "OpenFlow10+table_id";
890 case OFPUTIL_P_OF11_STD:
893 case OFPUTIL_P_OF12_OXM:
894 return "OXM-OpenFlow12";
896 case OFPUTIL_P_OF13_OXM:
897 return "OXM-OpenFlow13";
899 case OFPUTIL_P_OF14_OXM:
900 return "OXM-OpenFlow14";
902 case OFPUTIL_P_OF15_OXM:
903 return "OXM-OpenFlow15";
906 /* Check abbreviations. */
907 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
908 if (protocol == p->protocol) {
916 /* Returns a string that represents 'protocols'. The return value might be a
917 * comma-separated list if 'protocols' doesn't have a simple name. The return
918 * value is "none" if 'protocols' is 0.
920 * The caller must free the returned string (with free()). */
922 ofputil_protocols_to_string(enum ofputil_protocol protocols)
926 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
927 if (protocols == 0) {
928 return xstrdup("none");
933 const struct proto_abbrev *p;
937 ds_put_char(&s, ',');
940 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
941 if ((protocols & p->protocol) == p->protocol) {
942 ds_put_cstr(&s, p->name);
943 protocols &= ~p->protocol;
948 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
949 enum ofputil_protocol bit = 1u << i;
951 if (protocols & bit) {
952 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
961 return ds_steal_cstr(&s);
964 static enum ofputil_protocol
965 ofputil_protocol_from_string__(const char *s, size_t n)
967 const struct proto_abbrev *p;
970 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
971 enum ofputil_protocol bit = 1u << i;
972 const char *name = ofputil_protocol_to_string(bit);
974 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
979 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
980 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
988 /* Returns the nonempty set of protocols represented by 's', which can be a
989 * single protocol name or abbreviation or a comma-separated list of them.
991 * Aborts the program with an error message if 's' is invalid. */
992 enum ofputil_protocol
993 ofputil_protocols_from_string(const char *s)
995 const char *orig_s = s;
996 enum ofputil_protocol protocols;
1000 enum ofputil_protocol p;
1003 n = strcspn(s, ",");
1009 p = ofputil_protocol_from_string__(s, n);
1011 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
1019 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
1025 ofputil_version_from_string(const char *s)
1027 if (!strcasecmp(s, "OpenFlow10")) {
1028 return OFP10_VERSION;
1030 if (!strcasecmp(s, "OpenFlow11")) {
1031 return OFP11_VERSION;
1033 if (!strcasecmp(s, "OpenFlow12")) {
1034 return OFP12_VERSION;
1036 if (!strcasecmp(s, "OpenFlow13")) {
1037 return OFP13_VERSION;
1039 if (!strcasecmp(s, "OpenFlow14")) {
1040 return OFP14_VERSION;
1042 if (!strcasecmp(s, "OpenFlow15")) {
1043 return OFP15_VERSION;
1049 is_delimiter(unsigned char c)
1051 return isspace(c) || c == ',';
1055 ofputil_versions_from_string(const char *s)
1058 uint32_t bitmap = 0;
1065 if (is_delimiter(s[i])) {
1070 while (s[i + j] && !is_delimiter(s[i + j])) {
1073 key = xmemdup0(s + i, j);
1074 version = ofputil_version_from_string(key);
1076 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
1079 bitmap |= 1u << version;
1087 ofputil_versions_from_strings(char ** const s, size_t count)
1089 uint32_t bitmap = 0;
1092 int version = ofputil_version_from_string(s[count]);
1094 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
1096 bitmap |= 1u << version;
1104 ofputil_version_to_string(enum ofp_version ofp_version)
1106 switch (ofp_version) {
1108 return "OpenFlow10";
1110 return "OpenFlow11";
1112 return "OpenFlow12";
1114 return "OpenFlow13";
1116 return "OpenFlow14";
1118 return "OpenFlow15";
1125 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
1127 switch (packet_in_format) {
1128 case NXPIF_OPENFLOW10:
1137 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1139 switch (packet_in_format) {
1140 case NXPIF_OPENFLOW10:
1141 return "openflow10";
1150 ofputil_packet_in_format_from_string(const char *s)
1152 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1153 : !strcmp(s, "nxm") ? NXPIF_NXM
1158 ofputil_format_version(struct ds *msg, enum ofp_version version)
1160 ds_put_format(msg, "0x%02x", version);
1164 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1166 ds_put_cstr(msg, ofputil_version_to_string(version));
1170 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1171 void (*format_version)(struct ds *msg,
1175 format_version(msg, raw_ctz(bitmap));
1176 bitmap = zero_rightmost_1bit(bitmap);
1178 ds_put_cstr(msg, ", ");
1184 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1186 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1190 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1192 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1196 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1197 uint32_t *allowed_versionsp)
1199 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1200 const ovs_be32 *bitmap = ALIGNED_CAST(const ovs_be32 *, oheh + 1);
1201 uint32_t allowed_versions;
1203 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1207 /* Only use the first 32-bit element of the bitmap as that is all the
1208 * current implementation supports. Subsequent elements are ignored which
1209 * should have no effect on session negotiation until Open vSwitch supports
1210 * wire-protocol versions greater than 31.
1212 allowed_versions = ntohl(bitmap[0]);
1214 if (allowed_versions & 1) {
1215 /* There's no OpenFlow version 0. */
1216 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1218 allowed_versions &= ~1u;
1221 if (!allowed_versions) {
1222 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1223 "version (between 0x01 and 0x1f)");
1227 *allowed_versionsp = allowed_versions;
1232 version_bitmap_from_version(uint8_t ofp_version)
1234 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1237 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1238 * the set of OpenFlow versions for which 'oh' announces support.
1240 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1241 * successful, and thus '*allowed_versions' is always initialized. However, it
1242 * returns false if 'oh' contains some data that could not be fully understood,
1243 * true if 'oh' was completely parsed. */
1245 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1247 struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
1248 ofpbuf_pull(&msg, sizeof *oh);
1250 *allowed_versions = version_bitmap_from_version(oh->version);
1254 const struct ofp_hello_elem_header *oheh;
1257 if (msg.size < sizeof *oheh) {
1262 len = ntohs(oheh->length);
1263 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1267 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1268 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1276 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1277 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1279 should_send_version_bitmap(uint32_t allowed_versions)
1281 return !is_pow2((allowed_versions >> 1) + 1);
1284 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1285 * versions in the 'allowed_versions' bitmaps and returns the message. */
1287 ofputil_encode_hello(uint32_t allowed_versions)
1289 enum ofp_version ofp_version;
1292 ofp_version = leftmost_1bit_idx(allowed_versions);
1293 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1295 if (should_send_version_bitmap(allowed_versions)) {
1296 struct ofp_hello_elem_header *oheh;
1299 map_len = sizeof allowed_versions;
1300 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1301 oheh->type = htons(OFPHET_VERSIONBITMAP);
1302 oheh->length = htons(map_len + sizeof *oheh);
1303 *ALIGNED_CAST(ovs_be32 *, oheh + 1) = htonl(allowed_versions);
1305 ofpmsg_update_length(msg);
1311 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1312 * protocol is 'current', at least partly transitions the protocol to 'want'.
1313 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1314 * connection if the switch processes the returned message correctly. (If
1315 * '*next != want' then the caller will have to iterate.)
1317 * If 'current == want', or if it is not possible to transition from 'current'
1318 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1319 * protocol versions), returns NULL and stores 'current' in '*next'. */
1321 ofputil_encode_set_protocol(enum ofputil_protocol current,
1322 enum ofputil_protocol want,
1323 enum ofputil_protocol *next)
1325 enum ofp_version cur_version, want_version;
1326 enum ofputil_protocol cur_base, want_base;
1327 bool cur_tid, want_tid;
1329 cur_version = ofputil_protocol_to_ofp_version(current);
1330 want_version = ofputil_protocol_to_ofp_version(want);
1331 if (cur_version != want_version) {
1336 cur_base = ofputil_protocol_to_base(current);
1337 want_base = ofputil_protocol_to_base(want);
1338 if (cur_base != want_base) {
1339 *next = ofputil_protocol_set_base(current, want_base);
1341 switch (want_base) {
1342 case OFPUTIL_P_OF10_NXM:
1343 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1345 case OFPUTIL_P_OF10_STD:
1346 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1348 case OFPUTIL_P_OF11_STD:
1349 case OFPUTIL_P_OF12_OXM:
1350 case OFPUTIL_P_OF13_OXM:
1351 case OFPUTIL_P_OF14_OXM:
1352 case OFPUTIL_P_OF15_OXM:
1353 /* There is only one variant of each OpenFlow 1.1+ protocol, and we
1354 * verified above that we're not trying to change versions. */
1357 case OFPUTIL_P_OF10_STD_TID:
1358 case OFPUTIL_P_OF10_NXM_TID:
1363 cur_tid = (current & OFPUTIL_P_TID) != 0;
1364 want_tid = (want & OFPUTIL_P_TID) != 0;
1365 if (cur_tid != want_tid) {
1366 *next = ofputil_protocol_set_tid(current, want_tid);
1367 return ofputil_make_flow_mod_table_id(want_tid);
1370 ovs_assert(current == want);
1376 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1377 * format to 'nxff'. */
1379 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1381 struct nx_set_flow_format *sff;
1384 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1386 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1387 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1388 sff->format = htonl(nxff);
1393 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1395 enum ofputil_protocol
1396 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1398 switch (flow_format) {
1399 case NXFF_OPENFLOW10:
1400 return OFPUTIL_P_OF10_STD;
1403 return OFPUTIL_P_OF10_NXM;
1410 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1412 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1414 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1417 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1420 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1422 switch (flow_format) {
1423 case NXFF_OPENFLOW10:
1424 return "openflow10";
1433 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1434 enum nx_packet_in_format packet_in_format)
1436 struct nx_set_packet_in_format *spif;
1439 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1440 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1441 spif->format = htonl(packet_in_format);
1446 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1447 * extension on or off (according to 'flow_mod_table_id'). */
1449 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1451 struct nx_flow_mod_table_id *nfmti;
1454 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1455 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1456 nfmti->set = flow_mod_table_id;
1460 struct ofputil_flow_mod_flag {
1462 enum ofp_version min_version, max_version;
1463 enum ofputil_flow_mod_flags flag;
1466 static const struct ofputil_flow_mod_flag ofputil_flow_mod_flags[] = {
1467 { OFPFF_SEND_FLOW_REM, OFP10_VERSION, 0, OFPUTIL_FF_SEND_FLOW_REM },
1468 { OFPFF_CHECK_OVERLAP, OFP10_VERSION, 0, OFPUTIL_FF_CHECK_OVERLAP },
1469 { OFPFF10_EMERG, OFP10_VERSION, OFP10_VERSION,
1471 { OFPFF12_RESET_COUNTS, OFP12_VERSION, 0, OFPUTIL_FF_RESET_COUNTS },
1472 { OFPFF13_NO_PKT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_PKT_COUNTS },
1473 { OFPFF13_NO_BYT_COUNTS, OFP13_VERSION, 0, OFPUTIL_FF_NO_BYT_COUNTS },
1478 ofputil_decode_flow_mod_flags(ovs_be16 raw_flags_,
1479 enum ofp_flow_mod_command command,
1480 enum ofp_version version,
1481 enum ofputil_flow_mod_flags *flagsp)
1483 uint16_t raw_flags = ntohs(raw_flags_);
1484 const struct ofputil_flow_mod_flag *f;
1487 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1488 if (raw_flags & f->raw_flag
1489 && version >= f->min_version
1490 && (!f->max_version || version <= f->max_version)) {
1491 raw_flags &= ~f->raw_flag;
1496 /* In OF1.0 and OF1.1, "add" always resets counters, and other commands
1499 * In OF1.2 and later, OFPFF12_RESET_COUNTS controls whether each command
1500 * resets counters. */
1501 if ((version == OFP10_VERSION || version == OFP11_VERSION)
1502 && command == OFPFC_ADD) {
1503 *flagsp |= OFPUTIL_FF_RESET_COUNTS;
1506 return raw_flags ? OFPERR_OFPFMFC_BAD_FLAGS : 0;
1510 ofputil_encode_flow_mod_flags(enum ofputil_flow_mod_flags flags,
1511 enum ofp_version version)
1513 const struct ofputil_flow_mod_flag *f;
1517 for (f = ofputil_flow_mod_flags; f->raw_flag; f++) {
1519 && version >= f->min_version
1520 && (!f->max_version || version <= f->max_version)) {
1521 raw_flags |= f->raw_flag;
1525 return htons(raw_flags);
1528 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1529 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1532 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1533 * The caller must initialize 'ofpacts' and retains ownership of it.
1534 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1536 * Does not validate the flow_mod actions. The caller should do that, with
1537 * ofpacts_check(). */
1539 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1540 const struct ofp_header *oh,
1541 enum ofputil_protocol protocol,
1542 struct ofpbuf *ofpacts,
1543 ofp_port_t max_port, uint8_t max_table)
1548 /* Ignored for non-delete actions */
1549 fm->delete_reason = OFPRR_DELETE;
1551 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
1552 enum ofpraw raw = ofpraw_pull_assert(&b);
1553 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1554 /* Standard OpenFlow 1.1+ flow_mod. */
1555 const struct ofp11_flow_mod *ofm;
1557 ofm = ofpbuf_pull(&b, sizeof *ofm);
1559 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1564 /* Translate the message. */
1565 fm->priority = ntohs(ofm->priority);
1566 if (ofm->command == OFPFC_ADD
1567 || (oh->version == OFP11_VERSION
1568 && (ofm->command == OFPFC_MODIFY ||
1569 ofm->command == OFPFC_MODIFY_STRICT)
1570 && ofm->cookie_mask == htonll(0))) {
1571 /* In OpenFlow 1.1 only, a "modify" or "modify-strict" that does
1572 * not match on the cookie is treated as an "add" if there is no
1574 fm->cookie = htonll(0);
1575 fm->cookie_mask = htonll(0);
1576 fm->new_cookie = ofm->cookie;
1578 fm->cookie = ofm->cookie;
1579 fm->cookie_mask = ofm->cookie_mask;
1580 fm->new_cookie = OVS_BE64_MAX;
1582 fm->modify_cookie = false;
1583 fm->command = ofm->command;
1587 * OF1.1 entirely forbids table_id == OFPTT_ALL.
1588 * OF1.2+ allows table_id == OFPTT_ALL only for deletes. */
1589 fm->table_id = ofm->table_id;
1590 if (fm->table_id == OFPTT_ALL
1591 && (oh->version == OFP11_VERSION
1592 || (ofm->command != OFPFC_DELETE &&
1593 ofm->command != OFPFC_DELETE_STRICT))) {
1594 return OFPERR_OFPFMFC_BAD_TABLE_ID;
1597 fm->idle_timeout = ntohs(ofm->idle_timeout);
1598 fm->hard_timeout = ntohs(ofm->hard_timeout);
1599 if (oh->version >= OFP14_VERSION && ofm->command == OFPFC_ADD) {
1600 fm->importance = ntohs(ofm->importance);
1604 fm->buffer_id = ntohl(ofm->buffer_id);
1605 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1610 fm->out_group = (ofm->command == OFPFC_DELETE ||
1611 ofm->command == OFPFC_DELETE_STRICT
1612 ? ntohl(ofm->out_group)
1614 raw_flags = ofm->flags;
1618 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1619 /* Standard OpenFlow 1.0 flow_mod. */
1620 const struct ofp10_flow_mod *ofm;
1622 /* Get the ofp10_flow_mod. */
1623 ofm = ofpbuf_pull(&b, sizeof *ofm);
1625 /* Translate the rule. */
1626 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1627 ofputil_normalize_match(&fm->match);
1629 /* OpenFlow 1.0 says that exact-match rules have to have the
1630 * highest possible priority. */
1631 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1632 ? ntohs(ofm->priority)
1635 /* Translate the message. */
1636 command = ntohs(ofm->command);
1637 fm->cookie = htonll(0);
1638 fm->cookie_mask = htonll(0);
1639 fm->new_cookie = ofm->cookie;
1640 fm->idle_timeout = ntohs(ofm->idle_timeout);
1641 fm->hard_timeout = ntohs(ofm->hard_timeout);
1643 fm->buffer_id = ntohl(ofm->buffer_id);
1644 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1645 fm->out_group = OFPG_ANY;
1646 raw_flags = ofm->flags;
1647 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1648 /* Nicira extended flow_mod. */
1649 const struct nx_flow_mod *nfm;
1651 /* Dissect the message. */
1652 nfm = ofpbuf_pull(&b, sizeof *nfm);
1653 error = nx_pull_match(&b, ntohs(nfm->match_len),
1654 &fm->match, &fm->cookie, &fm->cookie_mask);
1659 /* Translate the message. */
1660 command = ntohs(nfm->command);
1661 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1662 /* Flow additions may only set a new cookie, not match an
1663 * existing cookie. */
1664 return OFPERR_NXBRC_NXM_INVALID;
1666 fm->priority = ntohs(nfm->priority);
1667 fm->new_cookie = nfm->cookie;
1668 fm->idle_timeout = ntohs(nfm->idle_timeout);
1669 fm->hard_timeout = ntohs(nfm->hard_timeout);
1671 fm->buffer_id = ntohl(nfm->buffer_id);
1672 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1673 fm->out_group = OFPG_ANY;
1674 raw_flags = nfm->flags;
1679 fm->modify_cookie = fm->new_cookie != OVS_BE64_MAX;
1680 if (protocol & OFPUTIL_P_TID) {
1681 fm->command = command & 0xff;
1682 fm->table_id = command >> 8;
1684 if (command > 0xff) {
1685 VLOG_WARN_RL(&bad_ofmsg_rl, "flow_mod has explicit table_id "
1686 "but flow_mod_table_id extension is not enabled");
1688 fm->command = command;
1689 fm->table_id = 0xff;
1693 if (fm->command > OFPFC_DELETE_STRICT) {
1694 return OFPERR_OFPFMFC_BAD_COMMAND;
1697 error = ofpacts_pull_openflow_instructions(&b, b.size,
1698 oh->version, ofpacts);
1702 fm->ofpacts = ofpacts->data;
1703 fm->ofpacts_len = ofpacts->size;
1705 error = ofputil_decode_flow_mod_flags(raw_flags, fm->command,
1706 oh->version, &fm->flags);
1711 if (fm->flags & OFPUTIL_FF_EMERG) {
1712 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1713 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1715 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1716 * or hard_timeout is nonzero. Otherwise, there is no good error
1717 * code, so just state that the flow table is full. */
1718 return (fm->hard_timeout || fm->idle_timeout
1719 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1720 : OFPERR_OFPFMFC_TABLE_FULL);
1723 return ofpacts_check_consistency(fm->ofpacts, fm->ofpacts_len,
1724 &fm->match.flow, max_port,
1725 fm->table_id, max_table, protocol);
1729 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1730 struct ofpbuf *bands)
1732 const struct ofp13_meter_band_header *ombh;
1733 struct ofputil_meter_band *mb;
1736 ombh = ofpbuf_try_pull(msg, len);
1738 return OFPERR_OFPBRC_BAD_LEN;
1741 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1742 size_t ombh_len = ntohs(ombh->len);
1743 /* All supported band types have the same length. */
1744 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1745 return OFPERR_OFPBRC_BAD_LEN;
1747 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1748 mb->type = ntohs(ombh->type);
1749 if (mb->type != OFPMBT13_DROP && mb->type != OFPMBT13_DSCP_REMARK) {
1750 return OFPERR_OFPMMFC_BAD_BAND;
1752 mb->rate = ntohl(ombh->rate);
1753 mb->burst_size = ntohl(ombh->burst_size);
1754 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1755 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1758 ombh = ALIGNED_CAST(struct ofp13_meter_band_header *,
1759 (char *) ombh + ombh_len);
1762 return OFPERR_OFPBRC_BAD_LEN;
1769 ofputil_decode_meter_mod(const struct ofp_header *oh,
1770 struct ofputil_meter_mod *mm,
1771 struct ofpbuf *bands)
1773 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
1774 ofpraw_pull_assert(&b);
1775 const struct ofp13_meter_mod *omm = ofpbuf_pull(&b, sizeof *omm);
1777 /* Translate the message. */
1778 mm->command = ntohs(omm->command);
1779 if (mm->command != OFPMC13_ADD &&
1780 mm->command != OFPMC13_MODIFY &&
1781 mm->command != OFPMC13_DELETE) {
1782 return OFPERR_OFPMMFC_BAD_COMMAND;
1784 mm->meter.meter_id = ntohl(omm->meter_id);
1786 if (mm->command == OFPMC13_DELETE) {
1787 mm->meter.flags = 0;
1788 mm->meter.n_bands = 0;
1789 mm->meter.bands = NULL;
1793 mm->meter.flags = ntohs(omm->flags);
1794 if (mm->meter.flags & OFPMF13_KBPS &&
1795 mm->meter.flags & OFPMF13_PKTPS) {
1796 return OFPERR_OFPMMFC_BAD_FLAGS;
1798 mm->meter.bands = bands->data;
1800 error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
1809 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1811 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1812 *meter_id = ntohl(omr->meter_id);
1816 ofputil_encode_meter_request(enum ofp_version ofp_version,
1817 enum ofputil_meter_request_type type,
1825 case OFPUTIL_METER_CONFIG:
1826 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1828 case OFPUTIL_METER_STATS:
1829 raw = OFPRAW_OFPST13_METER_REQUEST;
1832 case OFPUTIL_METER_FEATURES:
1833 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1837 msg = ofpraw_alloc(raw, ofp_version, 0);
1839 if (type != OFPUTIL_METER_FEATURES) {
1840 struct ofp13_meter_multipart_request *omr;
1841 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1842 omr->meter_id = htonl(meter_id);
1848 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1853 for (n = 0; n < n_bands; ++n) {
1854 /* Currently all band types have same size. */
1855 struct ofp13_meter_band_dscp_remark *ombh;
1856 size_t ombh_len = sizeof *ombh;
1858 ombh = ofpbuf_put_zeros(msg, ombh_len);
1860 ombh->type = htons(mb->type);
1861 ombh->len = htons(ombh_len);
1862 ombh->rate = htonl(mb->rate);
1863 ombh->burst_size = htonl(mb->burst_size);
1864 ombh->prec_level = mb->prec_level;
1870 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1872 ofputil_append_meter_config(struct ovs_list *replies,
1873 const struct ofputil_meter_config *mc)
1875 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1876 size_t start_ofs = msg->size;
1877 struct ofp13_meter_config *reply;
1879 ofpbuf_put_uninit(msg, sizeof *reply);
1880 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1882 reply = ofpbuf_at_assert(msg, start_ofs, sizeof *reply);
1883 reply->flags = htons(mc->flags);
1884 reply->meter_id = htonl(mc->meter_id);
1885 reply->length = htons(msg->size - start_ofs);
1887 ofpmp_postappend(replies, start_ofs);
1890 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1892 ofputil_append_meter_stats(struct ovs_list *replies,
1893 const struct ofputil_meter_stats *ms)
1895 struct ofp13_meter_stats *reply;
1899 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
1900 reply = ofpmp_append(replies, len);
1902 reply->meter_id = htonl(ms->meter_id);
1903 reply->len = htons(len);
1904 memset(reply->pad, 0, sizeof reply->pad);
1905 reply->flow_count = htonl(ms->flow_count);
1906 reply->packet_in_count = htonll(ms->packet_in_count);
1907 reply->byte_in_count = htonll(ms->byte_in_count);
1908 reply->duration_sec = htonl(ms->duration_sec);
1909 reply->duration_nsec = htonl(ms->duration_nsec);
1911 for (n = 0; n < ms->n_bands; ++n) {
1912 const struct ofputil_meter_band_stats *src = &ms->bands[n];
1913 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
1915 dst->packet_band_count = htonll(src->packet_count);
1916 dst->byte_band_count = htonll(src->byte_count);
1920 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
1921 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
1922 * 'bands'. The caller must have initialized 'bands' and retains ownership of
1923 * it across the call.
1925 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
1926 * message. Calling this function multiple times for a single 'msg' iterates
1927 * through the replies. 'bands' is cleared for each reply.
1929 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1930 * otherwise a positive errno value. */
1932 ofputil_decode_meter_config(struct ofpbuf *msg,
1933 struct ofputil_meter_config *mc,
1934 struct ofpbuf *bands)
1936 const struct ofp13_meter_config *omc;
1939 /* Pull OpenFlow headers for the first call. */
1941 ofpraw_pull_assert(msg);
1948 omc = ofpbuf_try_pull(msg, sizeof *omc);
1950 VLOG_WARN_RL(&bad_ofmsg_rl,
1951 "OFPMP_METER_CONFIG reply has %"PRIu32" leftover bytes at end",
1953 return OFPERR_OFPBRC_BAD_LEN;
1956 ofpbuf_clear(bands);
1957 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
1958 &mc->n_bands, bands);
1962 mc->meter_id = ntohl(omc->meter_id);
1963 mc->flags = ntohs(omc->flags);
1964 mc->bands = bands->data;
1970 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1971 struct ofpbuf *bands)
1973 const struct ofp13_meter_band_stats *ombs;
1974 struct ofputil_meter_band_stats *mbs;
1977 ombs = ofpbuf_try_pull(msg, len);
1979 return OFPERR_OFPBRC_BAD_LEN;
1982 n = len / sizeof *ombs;
1983 if (len != n * sizeof *ombs) {
1984 return OFPERR_OFPBRC_BAD_LEN;
1987 mbs = ofpbuf_put_uninit(bands, len);
1989 for (i = 0; i < n; ++i) {
1990 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
1991 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
1997 /* Converts an OFPMP_METER reply in 'msg' into an abstract
1998 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
1999 * decoded into 'bands'.
2001 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
2002 * message. Calling this function multiple times for a single 'msg' iterates
2003 * through the replies. 'bands' is cleared for each reply.
2005 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2006 * otherwise a positive errno value. */
2008 ofputil_decode_meter_stats(struct ofpbuf *msg,
2009 struct ofputil_meter_stats *ms,
2010 struct ofpbuf *bands)
2012 const struct ofp13_meter_stats *oms;
2015 /* Pull OpenFlow headers for the first call. */
2017 ofpraw_pull_assert(msg);
2024 oms = ofpbuf_try_pull(msg, sizeof *oms);
2026 VLOG_WARN_RL(&bad_ofmsg_rl,
2027 "OFPMP_METER reply has %"PRIu32" leftover bytes at end",
2029 return OFPERR_OFPBRC_BAD_LEN;
2032 ofpbuf_clear(bands);
2033 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
2034 &ms->n_bands, bands);
2038 ms->meter_id = ntohl(oms->meter_id);
2039 ms->flow_count = ntohl(oms->flow_count);
2040 ms->packet_in_count = ntohll(oms->packet_in_count);
2041 ms->byte_in_count = ntohll(oms->byte_in_count);
2042 ms->duration_sec = ntohl(oms->duration_sec);
2043 ms->duration_nsec = ntohl(oms->duration_nsec);
2044 ms->bands = bands->data;
2050 ofputil_decode_meter_features(const struct ofp_header *oh,
2051 struct ofputil_meter_features *mf)
2053 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
2055 mf->max_meters = ntohl(omf->max_meter);
2056 mf->band_types = ntohl(omf->band_types);
2057 mf->capabilities = ntohl(omf->capabilities);
2058 mf->max_bands = omf->max_bands;
2059 mf->max_color = omf->max_color;
2063 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
2064 const struct ofp_header *request)
2066 struct ofpbuf *reply;
2067 struct ofp13_meter_features *omf;
2069 reply = ofpraw_alloc_stats_reply(request, 0);
2070 omf = ofpbuf_put_zeros(reply, sizeof *omf);
2072 omf->max_meter = htonl(mf->max_meters);
2073 omf->band_types = htonl(mf->band_types);
2074 omf->capabilities = htonl(mf->capabilities);
2075 omf->max_bands = mf->max_bands;
2076 omf->max_color = mf->max_color;
2082 ofputil_encode_meter_mod(enum ofp_version ofp_version,
2083 const struct ofputil_meter_mod *mm)
2087 struct ofp13_meter_mod *omm;
2089 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
2090 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
2091 omm = ofpbuf_put_zeros(msg, sizeof *omm);
2092 omm->command = htons(mm->command);
2093 if (mm->command != OFPMC13_DELETE) {
2094 omm->flags = htons(mm->meter.flags);
2096 omm->meter_id = htonl(mm->meter.meter_id);
2098 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
2100 ofpmsg_update_length(msg);
2105 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2106 enum ofputil_protocol protocol)
2108 return htons(protocol & OFPUTIL_P_TID
2109 ? (fm->command & 0xff) | (fm->table_id << 8)
2113 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2114 * 'protocol' and returns the message. */
2116 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2117 enum ofputil_protocol protocol)
2119 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
2120 ovs_be16 raw_flags = ofputil_encode_flow_mod_flags(fm->flags, version);
2124 case OFPUTIL_P_OF11_STD:
2125 case OFPUTIL_P_OF12_OXM:
2126 case OFPUTIL_P_OF13_OXM:
2127 case OFPUTIL_P_OF14_OXM:
2128 case OFPUTIL_P_OF15_OXM: {
2129 struct ofp11_flow_mod *ofm;
2132 tailroom = ofputil_match_typical_len(protocol) + fm->ofpacts_len;
2133 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, version, tailroom);
2134 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2135 if ((protocol == OFPUTIL_P_OF11_STD
2136 && (fm->command == OFPFC_MODIFY ||
2137 fm->command == OFPFC_MODIFY_STRICT)
2138 && fm->cookie_mask == htonll(0))
2139 || fm->command == OFPFC_ADD) {
2140 ofm->cookie = fm->new_cookie;
2142 ofm->cookie = fm->cookie & fm->cookie_mask;
2144 ofm->cookie_mask = fm->cookie_mask;
2145 if (fm->table_id != OFPTT_ALL
2146 || (protocol != OFPUTIL_P_OF11_STD
2147 && (fm->command == OFPFC_DELETE ||
2148 fm->command == OFPFC_DELETE_STRICT))) {
2149 ofm->table_id = fm->table_id;
2153 ofm->command = fm->command;
2154 ofm->idle_timeout = htons(fm->idle_timeout);
2155 ofm->hard_timeout = htons(fm->hard_timeout);
2156 ofm->priority = htons(fm->priority);
2157 ofm->buffer_id = htonl(fm->buffer_id);
2158 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2159 ofm->out_group = htonl(fm->out_group);
2160 ofm->flags = raw_flags;
2161 if (version >= OFP14_VERSION && fm->command == OFPFC_ADD) {
2162 ofm->importance = htons(fm->importance);
2164 ofm->importance = 0;
2166 ofputil_put_ofp11_match(msg, &fm->match, protocol);
2167 ofpacts_put_openflow_instructions(fm->ofpacts, fm->ofpacts_len, msg,
2172 case OFPUTIL_P_OF10_STD:
2173 case OFPUTIL_P_OF10_STD_TID: {
2174 struct ofp10_flow_mod *ofm;
2176 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2178 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2179 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2180 ofm->cookie = fm->new_cookie;
2181 ofm->command = ofputil_tid_command(fm, protocol);
2182 ofm->idle_timeout = htons(fm->idle_timeout);
2183 ofm->hard_timeout = htons(fm->hard_timeout);
2184 ofm->priority = htons(fm->priority);
2185 ofm->buffer_id = htonl(fm->buffer_id);
2186 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2187 ofm->flags = raw_flags;
2188 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2193 case OFPUTIL_P_OF10_NXM:
2194 case OFPUTIL_P_OF10_NXM_TID: {
2195 struct nx_flow_mod *nfm;
2198 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2199 NXM_TYPICAL_LEN + fm->ofpacts_len);
2200 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2201 nfm->command = ofputil_tid_command(fm, protocol);
2202 nfm->cookie = fm->new_cookie;
2203 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2205 nfm->idle_timeout = htons(fm->idle_timeout);
2206 nfm->hard_timeout = htons(fm->hard_timeout);
2207 nfm->priority = htons(fm->priority);
2208 nfm->buffer_id = htonl(fm->buffer_id);
2209 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2210 nfm->flags = raw_flags;
2211 nfm->match_len = htons(match_len);
2212 ofpacts_put_openflow_actions(fm->ofpacts, fm->ofpacts_len, msg,
2221 ofpmsg_update_length(msg);
2226 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2227 const struct ofp10_flow_stats_request *ofsr,
2230 fsr->aggregate = aggregate;
2231 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2232 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2233 fsr->out_group = OFPG_ANY;
2234 fsr->table_id = ofsr->table_id;
2235 fsr->cookie = fsr->cookie_mask = htonll(0);
2241 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2242 struct ofpbuf *b, bool aggregate)
2244 const struct ofp11_flow_stats_request *ofsr;
2247 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2248 fsr->aggregate = aggregate;
2249 fsr->table_id = ofsr->table_id;
2250 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2254 fsr->out_group = ntohl(ofsr->out_group);
2255 fsr->cookie = ofsr->cookie;
2256 fsr->cookie_mask = ofsr->cookie_mask;
2257 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2266 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2267 struct ofpbuf *b, bool aggregate)
2269 const struct nx_flow_stats_request *nfsr;
2272 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2273 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2274 &fsr->cookie, &fsr->cookie_mask);
2279 return OFPERR_OFPBRC_BAD_LEN;
2282 fsr->aggregate = aggregate;
2283 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2284 fsr->out_group = OFPG_ANY;
2285 fsr->table_id = nfsr->table_id;
2290 /* Constructs and returns an OFPT_QUEUE_GET_CONFIG request for the specified
2291 * 'port' and 'queue', suitable for OpenFlow version 'version'.
2293 * 'queue' is honored only for OpenFlow 1.4 and later; older versions always
2294 * request all queues. */
2296 ofputil_encode_queue_get_config_request(enum ofp_version version,
2300 struct ofpbuf *request;
2302 if (version == OFP10_VERSION) {
2303 struct ofp10_queue_get_config_request *qgcr10;
2305 request = ofpraw_alloc(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST,
2307 qgcr10 = ofpbuf_put_zeros(request, sizeof *qgcr10);
2308 qgcr10->port = htons(ofp_to_u16(port));
2309 } else if (version < OFP14_VERSION) {
2310 struct ofp11_queue_get_config_request *qgcr11;
2312 request = ofpraw_alloc(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST,
2314 qgcr11 = ofpbuf_put_zeros(request, sizeof *qgcr11);
2315 qgcr11->port = ofputil_port_to_ofp11(port);
2317 struct ofp14_queue_desc_request *qdr14;
2319 request = ofpraw_alloc(OFPRAW_OFPST14_QUEUE_DESC_REQUEST,
2321 qdr14 = ofpbuf_put_zeros(request, sizeof *qdr14);
2322 qdr14->port = ofputil_port_to_ofp11(port);
2323 qdr14->queue = htonl(queue);
2329 /* Parses OFPT_QUEUE_GET_CONFIG request 'oh', storing the port specified by the
2330 * request into '*port'. Returns 0 if successful, otherwise an OpenFlow error
2333 ofputil_decode_queue_get_config_request(const struct ofp_header *oh,
2334 ofp_port_t *port, uint32_t *queue)
2336 const struct ofp10_queue_get_config_request *qgcr10;
2337 const struct ofp11_queue_get_config_request *qgcr11;
2338 const struct ofp14_queue_desc_request *qdr14;
2339 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
2340 enum ofpraw raw = ofpraw_pull_assert(&b);
2342 switch ((int) raw) {
2343 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2345 *port = u16_to_ofp(ntohs(qgcr10->port));
2349 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2352 enum ofperr error = ofputil_port_from_ofp11(qgcr11->port, port);
2353 if (error || *port == OFPP_ANY) {
2358 case OFPRAW_OFPST14_QUEUE_DESC_REQUEST:
2360 *queue = ntohl(qdr14->queue);
2361 return ofputil_port_from_ofp11(qdr14->port, port);
2367 return (ofp_to_u16(*port) < ofp_to_u16(OFPP_MAX)
2369 : OFPERR_OFPQOFC_BAD_PORT);
2372 /* Constructs and returns the beginning of a reply to
2373 * OFPT_QUEUE_GET_CONFIG_REQUEST or OFPMP_QUEUE_DESC request 'oh'. The caller
2374 * may append information about individual queues with
2375 * ofputil_append_queue_get_config_reply(). */
2377 ofputil_start_queue_get_config_reply(const struct ofp_header *request,
2378 struct ovs_list *replies)
2380 struct ofpbuf *reply;
2385 error = ofputil_decode_queue_get_config_request(request, &port, &queue);
2388 enum ofpraw raw = ofpraw_decode_assert(request);
2389 switch ((int) raw) {
2390 case OFPRAW_OFPT10_QUEUE_GET_CONFIG_REQUEST:
2391 reply = ofpraw_alloc_reply(OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY,
2393 struct ofp10_queue_get_config_reply *qgcr10
2394 = ofpbuf_put_zeros(reply, sizeof *qgcr10);
2395 qgcr10->port = htons(ofp_to_u16(port));
2398 case OFPRAW_OFPT11_QUEUE_GET_CONFIG_REQUEST:
2399 reply = ofpraw_alloc_reply(OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY,
2401 struct ofp11_queue_get_config_reply *qgcr11
2402 = ofpbuf_put_zeros(reply, sizeof *qgcr11);
2403 qgcr11->port = ofputil_port_to_ofp11(port);
2406 case OFPRAW_OFPST14_QUEUE_DESC_REQUEST:
2407 reply = ofpraw_alloc_stats_reply(request, 0);
2415 list_push_back(replies, &reply->list_node);
2419 put_ofp10_queue_rate(struct ofpbuf *reply,
2420 enum ofp10_queue_properties property, uint16_t rate)
2422 if (rate != UINT16_MAX) {
2423 struct ofp10_queue_prop_rate *oqpr;
2425 oqpr = ofpbuf_put_zeros(reply, sizeof *oqpr);
2426 oqpr->prop_header.property = htons(property);
2427 oqpr->prop_header.len = htons(sizeof *oqpr);
2428 oqpr->rate = htons(rate);
2433 put_ofp14_queue_rate(struct ofpbuf *reply,
2434 enum ofp14_queue_desc_prop_type type, uint16_t rate)
2436 if (rate != UINT16_MAX) {
2437 ofpprop_put_u16(reply, type, rate);
2442 ofputil_append_queue_get_config_reply(const struct ofputil_queue_config *qc,
2443 struct ovs_list *replies)
2445 enum ofp_version ofp_version = ofpmp_version(replies);
2446 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2447 size_t start_ofs = reply->size;
2451 if (ofp_version < OFP14_VERSION) {
2452 if (ofp_version < OFP12_VERSION) {
2453 struct ofp10_packet_queue *opq10;
2455 opq10 = ofpbuf_put_zeros(reply, sizeof *opq10);
2456 opq10->queue_id = htonl(qc->queue);
2457 len_ofs = (char *) &opq10->len - (char *) reply->data;
2459 struct ofp12_packet_queue *opq12;
2461 opq12 = ofpbuf_put_zeros(reply, sizeof *opq12);
2462 opq12->port = ofputil_port_to_ofp11(qc->port);
2463 opq12->queue_id = htonl(qc->queue);
2464 len_ofs = (char *) &opq12->len - (char *) reply->data;
2467 put_ofp10_queue_rate(reply, OFPQT10_MIN_RATE, qc->min_rate);
2468 put_ofp10_queue_rate(reply, OFPQT11_MAX_RATE, qc->max_rate);
2470 struct ofp14_queue_desc *oqd = ofpbuf_put_zeros(reply, sizeof *oqd);
2471 oqd->port_no = ofputil_port_to_ofp11(qc->port);
2472 oqd->queue_id = htonl(qc->queue);
2473 len_ofs = (char *) &oqd->len - (char *) reply->data;
2474 put_ofp14_queue_rate(reply, OFPQDPT14_MIN_RATE, qc->min_rate);
2475 put_ofp14_queue_rate(reply, OFPQDPT14_MAX_RATE, qc->max_rate);
2478 len = ofpbuf_at(reply, len_ofs, sizeof *len);
2479 *len = htons(reply->size - start_ofs);
2481 if (ofp_version >= OFP14_VERSION) {
2482 ofpmp_postappend(replies, start_ofs);
2487 parse_ofp10_queue_rate(const struct ofp10_queue_prop_header *hdr,
2490 const struct ofp10_queue_prop_rate *oqpr;
2492 if (hdr->len == htons(sizeof *oqpr)) {
2493 oqpr = (const struct ofp10_queue_prop_rate *) hdr;
2494 *rate = ntohs(oqpr->rate);
2497 return OFPERR_OFPBRC_BAD_LEN;
2502 ofputil_pull_queue_get_config_reply10(struct ofpbuf *msg,
2503 struct ofputil_queue_config *queue)
2505 const struct ofp_header *oh = msg->header;
2506 unsigned int opq_len; /* Length of protocol-specific queue header. */
2507 unsigned int len; /* Total length of queue + properties. */
2509 /* Obtain the port number from the message header. */
2510 if (oh->version == OFP10_VERSION) {
2511 const struct ofp10_queue_get_config_reply *oqgcr10 = msg->msg;
2512 queue->port = u16_to_ofp(ntohs(oqgcr10->port));
2514 const struct ofp11_queue_get_config_reply *oqgcr11 = msg->msg;
2515 enum ofperr error = ofputil_port_from_ofp11(oqgcr11->port,
2522 /* Pull off the queue header and get the queue number and length. */
2523 if (oh->version < OFP12_VERSION) {
2524 const struct ofp10_packet_queue *opq10;
2525 opq10 = ofpbuf_try_pull(msg, sizeof *opq10);
2527 return OFPERR_OFPBRC_BAD_LEN;
2529 queue->queue = ntohl(opq10->queue_id);
2530 len = ntohs(opq10->len);
2531 opq_len = sizeof *opq10;
2533 const struct ofp12_packet_queue *opq12;
2534 opq12 = ofpbuf_try_pull(msg, sizeof *opq12);
2536 return OFPERR_OFPBRC_BAD_LEN;
2538 queue->queue = ntohl(opq12->queue_id);
2539 len = ntohs(opq12->len);
2540 opq_len = sizeof *opq12;
2544 if (len < opq_len || len > msg->size + opq_len || len % 8) {
2545 return OFPERR_OFPBRC_BAD_LEN;
2549 /* Pull properties. The format of these properties differs from used in
2550 * OF1.4+ so we can't use the common property functions. */
2552 const struct ofp10_queue_prop_header *hdr;
2553 unsigned int property;
2554 unsigned int prop_len;
2555 enum ofperr error = 0;
2557 hdr = ofpbuf_at_assert(msg, 0, sizeof *hdr);
2558 prop_len = ntohs(hdr->len);
2559 if (prop_len < sizeof *hdr || prop_len > msg->size || prop_len % 8) {
2560 return OFPERR_OFPBRC_BAD_LEN;
2563 property = ntohs(hdr->property);
2565 case OFPQT10_MIN_RATE:
2566 error = parse_ofp10_queue_rate(hdr, &queue->min_rate);
2569 case OFPQT11_MAX_RATE:
2570 error = parse_ofp10_queue_rate(hdr, &queue->max_rate);
2574 VLOG_INFO_RL(&bad_ofmsg_rl, "unknown queue property %u", property);
2581 ofpbuf_pull(msg, prop_len);
2588 ofputil_pull_queue_get_config_reply14(struct ofpbuf *msg,
2589 struct ofputil_queue_config *queue)
2591 struct ofp14_queue_desc *oqd14 = ofpbuf_try_pull(msg, sizeof *oqd14);
2593 return OFPERR_OFPBRC_BAD_LEN;
2595 enum ofperr error = ofputil_port_from_ofp11(oqd14->port_no, &queue->port);
2599 queue->queue = ntohl(oqd14->queue_id);
2602 unsigned int len = ntohs(oqd14->len);
2603 if (len < sizeof *oqd14 || len > msg->size + sizeof *oqd14 || len % 8) {
2604 return OFPERR_OFPBRC_BAD_LEN;
2606 len -= sizeof *oqd14;
2608 struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
2610 while (properties.size > 0) {
2611 struct ofpbuf payload;
2614 error = ofpprop_pull(&properties, &payload, &type);
2620 case OFPQDPT14_MIN_RATE:
2621 error = ofpprop_parse_u16(&payload, &queue->min_rate);
2624 case OFPQDPT14_MAX_RATE:
2625 error = ofpprop_parse_u16(&payload, &queue->max_rate);
2629 error = OFPPROP_UNKNOWN(true, "queue desc", type);
2641 /* Decodes information about a queue from the OFPT_QUEUE_GET_CONFIG_REPLY in
2642 * 'reply' and stores it in '*queue'. ofputil_decode_queue_get_config_reply()
2643 * must already have pulled off the main header.
2645 * This function returns EOF if the last queue has already been decoded, 0 if a
2646 * queue was successfully decoded into '*queue', or an ofperr if there was a
2647 * problem decoding 'reply'. */
2649 ofputil_pull_queue_get_config_reply(struct ofpbuf *msg,
2650 struct ofputil_queue_config *queue)
2654 /* Pull OpenFlow header. */
2655 raw = ofpraw_pull_assert(msg);
2657 /* Pull protocol-specific ofp_queue_get_config_reply header (OF1.4
2658 * doesn't have one at all). */
2659 if (raw == OFPRAW_OFPT10_QUEUE_GET_CONFIG_REPLY) {
2660 ofpbuf_pull(msg, sizeof(struct ofp10_queue_get_config_reply));
2661 } else if (raw == OFPRAW_OFPT11_QUEUE_GET_CONFIG_REPLY) {
2662 ofpbuf_pull(msg, sizeof(struct ofp11_queue_get_config_reply));
2664 ovs_assert(raw == OFPRAW_OFPST14_QUEUE_DESC_REPLY);
2667 raw = ofpraw_decode_assert(msg->header);
2670 queue->min_rate = UINT16_MAX;
2671 queue->max_rate = UINT16_MAX;
2675 } else if (raw == OFPRAW_OFPST14_QUEUE_DESC_REPLY) {
2676 return ofputil_pull_queue_get_config_reply14(msg, queue);
2678 return ofputil_pull_queue_get_config_reply10(msg, queue);
2682 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2683 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2684 * successful, otherwise an OpenFlow error code. */
2686 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2687 const struct ofp_header *oh)
2689 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
2690 enum ofpraw raw = ofpraw_pull_assert(&b);
2691 switch ((int) raw) {
2692 case OFPRAW_OFPST10_FLOW_REQUEST:
2693 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2695 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2696 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2698 case OFPRAW_OFPST11_FLOW_REQUEST:
2699 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2701 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2702 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2704 case OFPRAW_NXST_FLOW_REQUEST:
2705 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2707 case OFPRAW_NXST_AGGREGATE_REQUEST:
2708 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2711 /* Hey, the caller lied. */
2716 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2717 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2718 * 'protocol', and returns the message. */
2720 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2721 enum ofputil_protocol protocol)
2727 case OFPUTIL_P_OF11_STD:
2728 case OFPUTIL_P_OF12_OXM:
2729 case OFPUTIL_P_OF13_OXM:
2730 case OFPUTIL_P_OF14_OXM:
2731 case OFPUTIL_P_OF15_OXM: {
2732 struct ofp11_flow_stats_request *ofsr;
2734 raw = (fsr->aggregate
2735 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2736 : OFPRAW_OFPST11_FLOW_REQUEST);
2737 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2738 ofputil_match_typical_len(protocol));
2739 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2740 ofsr->table_id = fsr->table_id;
2741 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2742 ofsr->out_group = htonl(fsr->out_group);
2743 ofsr->cookie = fsr->cookie;
2744 ofsr->cookie_mask = fsr->cookie_mask;
2745 ofputil_put_ofp11_match(msg, &fsr->match, protocol);
2749 case OFPUTIL_P_OF10_STD:
2750 case OFPUTIL_P_OF10_STD_TID: {
2751 struct ofp10_flow_stats_request *ofsr;
2753 raw = (fsr->aggregate
2754 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2755 : OFPRAW_OFPST10_FLOW_REQUEST);
2756 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2757 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2758 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2759 ofsr->table_id = fsr->table_id;
2760 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2764 case OFPUTIL_P_OF10_NXM:
2765 case OFPUTIL_P_OF10_NXM_TID: {
2766 struct nx_flow_stats_request *nfsr;
2769 raw = (fsr->aggregate
2770 ? OFPRAW_NXST_AGGREGATE_REQUEST
2771 : OFPRAW_NXST_FLOW_REQUEST);
2772 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2773 ofpbuf_put_zeros(msg, sizeof *nfsr);
2774 match_len = nx_put_match(msg, &fsr->match,
2775 fsr->cookie, fsr->cookie_mask);
2778 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2779 nfsr->match_len = htons(match_len);
2780 nfsr->table_id = fsr->table_id;
2791 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2792 * ofputil_flow_stats in 'fs'.
2794 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2795 * OpenFlow message. Calling this function multiple times for a single 'msg'
2796 * iterates through the replies. The caller must initially leave 'msg''s layer
2797 * pointers null and not modify them between calls.
2799 * Most switches don't send the values needed to populate fs->idle_age and
2800 * fs->hard_age, so those members will usually be set to 0. If the switch from
2801 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2802 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2803 * 'idle_age' and 'hard_age' members in 'fs'.
2805 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2806 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2807 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2809 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2810 * otherwise a positive errno value. */
2812 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2814 bool flow_age_extension,
2815 struct ofpbuf *ofpacts)
2817 const struct ofp_header *oh;
2818 size_t instructions_len;
2822 error = (msg->header ? ofpraw_decode(&raw, msg->header)
2823 : ofpraw_pull(&raw, msg));
2831 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2832 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2833 const struct ofp11_flow_stats *ofs;
2835 uint16_t padded_match_len;
2837 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2839 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2840 "bytes at end", msg->size);
2844 length = ntohs(ofs->length);
2845 if (length < sizeof *ofs) {
2846 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2847 "length %"PRIuSIZE, length);
2851 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2852 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2855 instructions_len = length - sizeof *ofs - padded_match_len;
2857 fs->priority = ntohs(ofs->priority);
2858 fs->table_id = ofs->table_id;
2859 fs->duration_sec = ntohl(ofs->duration_sec);
2860 fs->duration_nsec = ntohl(ofs->duration_nsec);
2861 fs->idle_timeout = ntohs(ofs->idle_timeout);
2862 fs->hard_timeout = ntohs(ofs->hard_timeout);
2863 if (oh->version >= OFP14_VERSION) {
2864 fs->importance = ntohs(ofs->importance);
2868 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
2869 error = ofputil_decode_flow_mod_flags(ofs->flags, -1, oh->version,
2879 fs->cookie = ofs->cookie;
2880 fs->packet_count = ntohll(ofs->packet_count);
2881 fs->byte_count = ntohll(ofs->byte_count);
2882 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2883 const struct ofp10_flow_stats *ofs;
2886 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2888 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %"PRIu32" leftover "
2889 "bytes at end", msg->size);
2893 length = ntohs(ofs->length);
2894 if (length < sizeof *ofs) {
2895 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2896 "length %"PRIuSIZE, length);
2899 instructions_len = length - sizeof *ofs;
2901 fs->cookie = get_32aligned_be64(&ofs->cookie);
2902 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2903 fs->priority = ntohs(ofs->priority);
2904 fs->table_id = ofs->table_id;
2905 fs->duration_sec = ntohl(ofs->duration_sec);
2906 fs->duration_nsec = ntohl(ofs->duration_nsec);
2907 fs->idle_timeout = ntohs(ofs->idle_timeout);
2908 fs->hard_timeout = ntohs(ofs->hard_timeout);
2912 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2913 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2915 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2916 const struct nx_flow_stats *nfs;
2917 size_t match_len, length;
2919 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2921 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %"PRIu32" leftover "
2922 "bytes at end", msg->size);
2926 length = ntohs(nfs->length);
2927 match_len = ntohs(nfs->match_len);
2928 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2929 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%"PRIuSIZE" "
2930 "claims invalid length %"PRIuSIZE, match_len, length);
2933 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2936 instructions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2938 fs->cookie = nfs->cookie;
2939 fs->table_id = nfs->table_id;
2940 fs->duration_sec = ntohl(nfs->duration_sec);
2941 fs->duration_nsec = ntohl(nfs->duration_nsec);
2942 fs->priority = ntohs(nfs->priority);
2943 fs->idle_timeout = ntohs(nfs->idle_timeout);
2944 fs->hard_timeout = ntohs(nfs->hard_timeout);
2948 if (flow_age_extension) {
2949 if (nfs->idle_age) {
2950 fs->idle_age = ntohs(nfs->idle_age) - 1;
2952 if (nfs->hard_age) {
2953 fs->hard_age = ntohs(nfs->hard_age) - 1;
2956 fs->packet_count = ntohll(nfs->packet_count);
2957 fs->byte_count = ntohll(nfs->byte_count);
2963 if (ofpacts_pull_openflow_instructions(msg, instructions_len, oh->version,
2965 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2968 fs->ofpacts = ofpacts->data;
2969 fs->ofpacts_len = ofpacts->size;
2974 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2976 * We use this in situations where OVS internally uses UINT64_MAX to mean
2977 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2979 unknown_to_zero(uint64_t count)
2981 return count != UINT64_MAX ? count : 0;
2984 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2985 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2986 * have been initialized with ofpmp_init(). */
2988 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2989 struct ovs_list *replies)
2991 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2992 size_t start_ofs = reply->size;
2993 enum ofp_version version = ofpmp_version(replies);
2994 enum ofpraw raw = ofpmp_decode_raw(replies);
2996 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2997 struct ofp11_flow_stats *ofs;
2999 ofpbuf_put_uninit(reply, sizeof *ofs);
3000 oxm_put_match(reply, &fs->match, version);
3001 ofpacts_put_openflow_instructions(fs->ofpacts, fs->ofpacts_len, reply,
3004 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3005 ofs->length = htons(reply->size - start_ofs);
3006 ofs->table_id = fs->table_id;
3008 ofs->duration_sec = htonl(fs->duration_sec);
3009 ofs->duration_nsec = htonl(fs->duration_nsec);
3010 ofs->priority = htons(fs->priority);
3011 ofs->idle_timeout = htons(fs->idle_timeout);
3012 ofs->hard_timeout = htons(fs->hard_timeout);
3013 if (version >= OFP14_VERSION) {
3014 ofs->importance = htons(fs->importance);
3016 ofs->importance = 0;
3018 if (raw == OFPRAW_OFPST13_FLOW_REPLY) {
3019 ofs->flags = ofputil_encode_flow_mod_flags(fs->flags, version);
3023 memset(ofs->pad2, 0, sizeof ofs->pad2);
3024 ofs->cookie = fs->cookie;
3025 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
3026 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
3027 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
3028 struct ofp10_flow_stats *ofs;
3030 ofpbuf_put_uninit(reply, sizeof *ofs);
3031 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3033 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
3034 ofs->length = htons(reply->size - start_ofs);
3035 ofs->table_id = fs->table_id;
3037 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
3038 ofs->duration_sec = htonl(fs->duration_sec);
3039 ofs->duration_nsec = htonl(fs->duration_nsec);
3040 ofs->priority = htons(fs->priority);
3041 ofs->idle_timeout = htons(fs->idle_timeout);
3042 ofs->hard_timeout = htons(fs->hard_timeout);
3043 memset(ofs->pad2, 0, sizeof ofs->pad2);
3044 put_32aligned_be64(&ofs->cookie, fs->cookie);
3045 put_32aligned_be64(&ofs->packet_count,
3046 htonll(unknown_to_zero(fs->packet_count)));
3047 put_32aligned_be64(&ofs->byte_count,
3048 htonll(unknown_to_zero(fs->byte_count)));
3049 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
3050 struct nx_flow_stats *nfs;
3053 ofpbuf_put_uninit(reply, sizeof *nfs);
3054 match_len = nx_put_match(reply, &fs->match, 0, 0);
3055 ofpacts_put_openflow_actions(fs->ofpacts, fs->ofpacts_len, reply,
3057 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
3058 nfs->length = htons(reply->size - start_ofs);
3059 nfs->table_id = fs->table_id;
3061 nfs->duration_sec = htonl(fs->duration_sec);
3062 nfs->duration_nsec = htonl(fs->duration_nsec);
3063 nfs->priority = htons(fs->priority);
3064 nfs->idle_timeout = htons(fs->idle_timeout);
3065 nfs->hard_timeout = htons(fs->hard_timeout);
3066 nfs->idle_age = htons(fs->idle_age < 0 ? 0
3067 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
3069 nfs->hard_age = htons(fs->hard_age < 0 ? 0
3070 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
3072 nfs->match_len = htons(match_len);
3073 nfs->cookie = fs->cookie;
3074 nfs->packet_count = htonll(fs->packet_count);
3075 nfs->byte_count = htonll(fs->byte_count);
3080 ofpmp_postappend(replies, start_ofs);
3083 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
3084 * NXST_AGGREGATE reply matching 'request', and returns the message. */
3086 ofputil_encode_aggregate_stats_reply(
3087 const struct ofputil_aggregate_stats *stats,
3088 const struct ofp_header *request)
3090 struct ofp_aggregate_stats_reply *asr;
3091 uint64_t packet_count;
3092 uint64_t byte_count;
3096 ofpraw_decode(&raw, request);
3097 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
3098 packet_count = unknown_to_zero(stats->packet_count);
3099 byte_count = unknown_to_zero(stats->byte_count);
3101 packet_count = stats->packet_count;
3102 byte_count = stats->byte_count;
3105 msg = ofpraw_alloc_stats_reply(request, 0);
3106 asr = ofpbuf_put_zeros(msg, sizeof *asr);
3107 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
3108 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
3109 asr->flow_count = htonl(stats->flow_count);
3115 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
3116 const struct ofp_header *reply)
3118 struct ofpbuf msg = ofpbuf_const_initializer(reply, ntohs(reply->length));
3119 ofpraw_pull_assert(&msg);
3121 struct ofp_aggregate_stats_reply *asr = msg.msg;
3122 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
3123 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
3124 stats->flow_count = ntohl(asr->flow_count);
3129 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
3130 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
3131 * an OpenFlow error code. */
3133 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
3134 const struct ofp_header *oh)
3136 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
3137 enum ofpraw raw = ofpraw_pull_assert(&b);
3138 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
3139 const struct ofp12_flow_removed *ofr;
3142 ofr = ofpbuf_pull(&b, sizeof *ofr);
3144 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
3149 fr->priority = ntohs(ofr->priority);
3150 fr->cookie = ofr->cookie;
3151 fr->reason = ofr->reason;
3152 fr->table_id = ofr->table_id;
3153 fr->duration_sec = ntohl(ofr->duration_sec);
3154 fr->duration_nsec = ntohl(ofr->duration_nsec);
3155 fr->idle_timeout = ntohs(ofr->idle_timeout);
3156 fr->hard_timeout = ntohs(ofr->hard_timeout);
3157 fr->packet_count = ntohll(ofr->packet_count);
3158 fr->byte_count = ntohll(ofr->byte_count);
3159 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
3160 const struct ofp10_flow_removed *ofr;
3162 ofr = ofpbuf_pull(&b, sizeof *ofr);
3164 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
3165 fr->priority = ntohs(ofr->priority);
3166 fr->cookie = ofr->cookie;
3167 fr->reason = ofr->reason;
3169 fr->duration_sec = ntohl(ofr->duration_sec);
3170 fr->duration_nsec = ntohl(ofr->duration_nsec);
3171 fr->idle_timeout = ntohs(ofr->idle_timeout);
3172 fr->hard_timeout = 0;
3173 fr->packet_count = ntohll(ofr->packet_count);
3174 fr->byte_count = ntohll(ofr->byte_count);
3175 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
3176 struct nx_flow_removed *nfr;
3179 nfr = ofpbuf_pull(&b, sizeof *nfr);
3180 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
3186 return OFPERR_OFPBRC_BAD_LEN;
3189 fr->priority = ntohs(nfr->priority);
3190 fr->cookie = nfr->cookie;
3191 fr->reason = nfr->reason;
3192 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
3193 fr->duration_sec = ntohl(nfr->duration_sec);
3194 fr->duration_nsec = ntohl(nfr->duration_nsec);
3195 fr->idle_timeout = ntohs(nfr->idle_timeout);
3196 fr->hard_timeout = 0;
3197 fr->packet_count = ntohll(nfr->packet_count);
3198 fr->byte_count = ntohll(nfr->byte_count);
3206 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
3207 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
3210 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
3211 enum ofputil_protocol protocol)
3214 enum ofp_flow_removed_reason reason = fr->reason;
3216 if (reason == OFPRR_METER_DELETE && !(protocol & OFPUTIL_P_OF14_UP)) {
3217 reason = OFPRR_DELETE;
3221 case OFPUTIL_P_OF11_STD:
3222 case OFPUTIL_P_OF12_OXM:
3223 case OFPUTIL_P_OF13_OXM:
3224 case OFPUTIL_P_OF14_OXM:
3225 case OFPUTIL_P_OF15_OXM: {
3226 struct ofp12_flow_removed *ofr;
3228 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
3229 ofputil_protocol_to_ofp_version(protocol),
3231 ofputil_match_typical_len(protocol));
3232 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3233 ofr->cookie = fr->cookie;
3234 ofr->priority = htons(fr->priority);
3235 ofr->reason = reason;
3236 ofr->table_id = fr->table_id;
3237 ofr->duration_sec = htonl(fr->duration_sec);
3238 ofr->duration_nsec = htonl(fr->duration_nsec);
3239 ofr->idle_timeout = htons(fr->idle_timeout);
3240 ofr->hard_timeout = htons(fr->hard_timeout);
3241 ofr->packet_count = htonll(fr->packet_count);
3242 ofr->byte_count = htonll(fr->byte_count);
3243 ofputil_put_ofp11_match(msg, &fr->match, protocol);
3247 case OFPUTIL_P_OF10_STD:
3248 case OFPUTIL_P_OF10_STD_TID: {
3249 struct ofp10_flow_removed *ofr;
3251 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
3253 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
3254 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
3255 ofr->cookie = fr->cookie;
3256 ofr->priority = htons(fr->priority);
3257 ofr->reason = reason;
3258 ofr->duration_sec = htonl(fr->duration_sec);
3259 ofr->duration_nsec = htonl(fr->duration_nsec);
3260 ofr->idle_timeout = htons(fr->idle_timeout);
3261 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
3262 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
3266 case OFPUTIL_P_OF10_NXM:
3267 case OFPUTIL_P_OF10_NXM_TID: {
3268 struct nx_flow_removed *nfr;
3271 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
3272 htonl(0), NXM_TYPICAL_LEN);
3273 ofpbuf_put_zeros(msg, sizeof *nfr);
3274 match_len = nx_put_match(msg, &fr->match, 0, 0);
3277 nfr->cookie = fr->cookie;
3278 nfr->priority = htons(fr->priority);
3279 nfr->reason = reason;
3280 nfr->table_id = fr->table_id + 1;
3281 nfr->duration_sec = htonl(fr->duration_sec);
3282 nfr->duration_nsec = htonl(fr->duration_nsec);
3283 nfr->idle_timeout = htons(fr->idle_timeout);
3284 nfr->match_len = htons(match_len);
3285 nfr->packet_count = htonll(fr->packet_count);
3286 nfr->byte_count = htonll(fr->byte_count);
3297 /* Decodes the packet-in message starting at 'oh' into '*pin'. Populates
3298 * 'pin->packet' and 'pin->len' with the part of the packet actually included
3299 * in the message, and '*total_len' with the original length of the packet
3300 * (which is larger than 'packet->len' if only part of the packet was
3301 * included). Stores the packet's buffer ID in '*buffer_id' (UINT32_MAX if it
3302 * was not buffered).
3304 * Returns 0 if successful, otherwise an OpenFlow error code. */
3306 ofputil_decode_packet_in(const struct ofp_header *oh,
3307 struct ofputil_packet_in *pin,
3308 size_t *total_len, uint32_t *buffer_id)
3310 memset(pin, 0, sizeof *pin);
3311 pin->cookie = OVS_BE64_MAX;
3313 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
3314 enum ofpraw raw = ofpraw_pull_assert(&b);
3315 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
3316 const struct ofp12_packet_in *opi = ofpbuf_pull(&b, sizeof *opi);
3317 const ovs_be64 *cookie = (raw == OFPRAW_OFPT13_PACKET_IN
3318 ? ofpbuf_pull(&b, sizeof *cookie)
3320 enum ofperr error = oxm_pull_match_loose(&b, &pin->flow_metadata);
3325 if (!ofpbuf_try_pull(&b, 2)) {
3326 return OFPERR_OFPBRC_BAD_LEN;
3329 pin->reason = opi->reason;
3330 pin->table_id = opi->table_id;
3331 *buffer_id = ntohl(opi->buffer_id);
3332 *total_len = ntohs(opi->total_len);
3334 pin->cookie = *cookie;
3337 pin->packet = b.data;
3339 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
3340 const struct ofp10_packet_in *opi;
3342 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
3344 pin->packet = opi->data;
3347 match_init_catchall(&pin->flow_metadata);
3348 match_set_in_port(&pin->flow_metadata,
3349 u16_to_ofp(ntohs(opi->in_port)));
3350 pin->reason = opi->reason;
3351 *buffer_id = ntohl(opi->buffer_id);
3352 *total_len = ntohs(opi->total_len);
3353 } else if (raw == OFPRAW_OFPT11_PACKET_IN) {
3354 const struct ofp11_packet_in *opi;
3358 opi = ofpbuf_pull(&b, sizeof *opi);
3360 pin->packet = b.data;
3363 *buffer_id = ntohl(opi->buffer_id);
3364 error = ofputil_port_from_ofp11(opi->in_port, &in_port);
3368 match_init_catchall(&pin->flow_metadata);
3369 match_set_in_port(&pin->flow_metadata, in_port);
3370 *total_len = ntohs(opi->total_len);
3371 pin->reason = opi->reason;
3372 pin->table_id = opi->table_id;
3373 } else if (raw == OFPRAW_NXT_PACKET_IN) {
3374 const struct nx_packet_in *npi;
3377 npi = ofpbuf_pull(&b, sizeof *npi);
3378 error = nx_pull_match_loose(&b, ntohs(npi->match_len),
3379 &pin->flow_metadata, NULL, NULL);
3384 if (!ofpbuf_try_pull(&b, 2)) {
3385 return OFPERR_OFPBRC_BAD_LEN;
3388 pin->reason = npi->reason;
3389 pin->table_id = npi->table_id;
3390 pin->cookie = npi->cookie;
3392 *buffer_id = ntohl(npi->buffer_id);
3393 *total_len = ntohs(npi->total_len);
3395 pin->packet = b.data;
3405 encode_packet_in_reason(enum ofp_packet_in_reason reason,
3406 enum ofp_version version)
3411 case OFPR_INVALID_TTL:
3414 case OFPR_ACTION_SET:
3416 case OFPR_PACKET_OUT:
3417 return version < OFP14_VERSION ? OFPR_ACTION : reason;
3419 case OFPR_EXPLICIT_MISS:
3420 return version < OFP13_VERSION ? OFPR_ACTION : OFPR_NO_MATCH;
3422 case OFPR_IMPLICIT_MISS:
3423 return OFPR_NO_MATCH;
3425 case OFPR_N_REASONS:
3431 static struct ofpbuf *
3432 ofputil_encode_ofp10_packet_in(const struct ofputil_packet_in *pin,
3435 struct ofp10_packet_in *opi;
3438 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
3439 htonl(0), pin->len);
3440 opi = ofpbuf_put_zeros(msg, offsetof(struct ofp10_packet_in, data));
3441 opi->total_len = htons(pin->len);
3442 opi->in_port = htons(ofp_to_u16(pin->flow_metadata.flow.in_port.ofp_port));
3443 opi->reason = encode_packet_in_reason(pin->reason, OFP10_VERSION);
3444 opi->buffer_id = htonl(buffer_id);
3449 static struct ofpbuf *
3450 ofputil_encode_nx_packet_in(const struct ofputil_packet_in *pin,
3453 struct nx_packet_in *npi;
3457 /* The final argument is just an estimate of the space required. */
3458 msg = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3459 htonl(0), NXM_TYPICAL_LEN + 2 + pin->len);
3460 ofpbuf_put_zeros(msg, sizeof *npi);
3461 match_len = nx_put_match(msg, &pin->flow_metadata, 0, 0);
3462 ofpbuf_put_zeros(msg, 2);
3465 npi->buffer_id = htonl(buffer_id);
3466 npi->total_len = htons(pin->len);
3467 npi->reason = encode_packet_in_reason(pin->reason, OFP10_VERSION);
3468 npi->table_id = pin->table_id;
3469 npi->cookie = pin->cookie;
3470 npi->match_len = htons(match_len);
3475 static struct ofpbuf *
3476 ofputil_encode_ofp11_packet_in(const struct ofputil_packet_in *pin,
3479 struct ofp11_packet_in *opi;
3482 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_PACKET_IN, OFP11_VERSION,
3483 htonl(0), pin->len);
3484 opi = ofpbuf_put_zeros(msg, sizeof *opi);
3485 opi->buffer_id = htonl(buffer_id);
3486 opi->in_port = ofputil_port_to_ofp11(
3487 pin->flow_metadata.flow.in_port.ofp_port);
3488 opi->in_phy_port = opi->in_port;
3489 opi->total_len = htons(pin->len);
3490 opi->reason = encode_packet_in_reason(pin->reason, OFP11_VERSION);
3491 opi->table_id = pin->table_id;
3496 static struct ofpbuf *
3497 ofputil_encode_ofp12_packet_in(const struct ofputil_packet_in *pin,
3498 enum ofp_version version,
3501 enum ofpraw raw = (version >= OFP13_VERSION
3502 ? OFPRAW_OFPT13_PACKET_IN
3503 : OFPRAW_OFPT12_PACKET_IN);
3506 /* The final argument is just an estimate of the space required. */
3507 msg = ofpraw_alloc_xid(raw, version,
3508 htonl(0), NXM_TYPICAL_LEN + 2 + pin->len);
3510 struct ofp12_packet_in *opi = ofpbuf_put_zeros(msg, sizeof *opi);
3511 opi->buffer_id = htonl(buffer_id);
3512 opi->total_len = htons(pin->len);
3513 opi->reason = encode_packet_in_reason(pin->reason, version);
3514 opi->table_id = pin->table_id;
3516 if (version >= OFP13_VERSION) {
3517 ovs_be64 cookie = pin->cookie;
3518 ofpbuf_put(msg, &cookie, sizeof cookie);
3521 oxm_put_match(msg, &pin->flow_metadata, version);
3522 ofpbuf_put_zeros(msg, 2);
3527 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message for
3528 * 'protocol', using the packet-in format specified by 'packet_in_format'.
3530 * If 'pkt_buf' is nonnull and 'max_len' allows the packet to be buffered, this
3531 * function will attempt to obtain a buffer ID from 'pktbuf' and truncate the
3532 * packet to 'max_len' bytes. Otherwise, or if 'pktbuf' doesn't have a free
3533 * buffer, it will send the whole packet without buffering. */
3535 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
3536 enum ofputil_protocol protocol,
3537 enum nx_packet_in_format packet_in_format,
3538 uint16_t max_len, struct pktbuf *pktbuf)
3540 enum ofp_version version = ofputil_protocol_to_ofp_version(protocol);
3542 /* Get buffer ID. */
3543 ofp_port_t in_port = pin->flow_metadata.flow.in_port.ofp_port;
3544 uint32_t buffer_id = (max_len != OFPCML12_NO_BUFFER && pktbuf
3545 ? pktbuf_save(pktbuf, pin->packet,
3551 case OFPUTIL_P_OF10_STD:
3552 case OFPUTIL_P_OF10_STD_TID:
3553 case OFPUTIL_P_OF10_NXM:
3554 case OFPUTIL_P_OF10_NXM_TID:
3555 msg = (packet_in_format == NXPIF_NXM
3556 ? ofputil_encode_nx_packet_in(pin, buffer_id)
3557 : ofputil_encode_ofp10_packet_in(pin, buffer_id));
3560 case OFPUTIL_P_OF11_STD:
3561 msg = ofputil_encode_ofp11_packet_in(pin, buffer_id);
3564 case OFPUTIL_P_OF12_OXM:
3565 case OFPUTIL_P_OF13_OXM:
3566 case OFPUTIL_P_OF14_OXM:
3567 case OFPUTIL_P_OF15_OXM:
3568 msg = ofputil_encode_ofp12_packet_in(pin, version, buffer_id);
3575 /* Append some of the packet:
3577 * - If not buffered, the whole thing.
3579 * - Otherwise, no more than 'max_len' bytes. */
3580 ofpbuf_put(msg, pin->packet,
3581 (buffer_id == UINT32_MAX
3583 : MIN(max_len, pin->len)));
3585 ofpmsg_update_length(msg);
3589 /* Returns a string form of 'reason'. The return value is either a statically
3590 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3591 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3593 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3594 char *reasonbuf, size_t bufsize)
3601 case OFPR_INVALID_TTL:
3602 return "invalid_ttl";
3603 case OFPR_ACTION_SET:
3604 return "action_set";
3607 case OFPR_PACKET_OUT:
3608 return "packet_out";
3609 case OFPR_EXPLICIT_MISS:
3610 case OFPR_IMPLICIT_MISS:
3613 case OFPR_N_REASONS:
3615 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3621 ofputil_packet_in_reason_from_string(const char *s,
3622 enum ofp_packet_in_reason *reason)
3626 for (i = 0; i < OFPR_N_REASONS; i++) {
3627 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3628 const char *reason_s;
3630 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3632 if (!strcasecmp(s, reason_s)) {
3640 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3643 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3644 * message's actions. The caller must initialize 'ofpacts' and retains
3645 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3647 * Returns 0 if successful, otherwise an OFPERR_* value. */
3649 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3650 const struct ofp_header *oh,
3651 struct ofpbuf *ofpacts)
3653 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
3654 enum ofpraw raw = ofpraw_pull_assert(&b);
3656 ofpbuf_clear(ofpacts);
3657 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3659 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3661 po->buffer_id = ntohl(opo->buffer_id);
3662 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3667 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3668 oh->version, ofpacts);
3672 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3674 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3676 po->buffer_id = ntohl(opo->buffer_id);
3677 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3679 error = ofpacts_pull_openflow_actions(&b, ntohs(opo->actions_len),
3680 oh->version, ofpacts);
3688 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3689 && po->in_port != OFPP_LOCAL
3690 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3691 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3693 return OFPERR_OFPBRC_BAD_PORT;
3696 po->ofpacts = ofpacts->data;
3697 po->ofpacts_len = ofpacts->size;
3699 if (po->buffer_id == UINT32_MAX) {
3700 po->packet = b.data;
3701 po->packet_len = b.size;
3710 /* ofputil_phy_port */
3712 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3713 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3714 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3715 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3716 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3717 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3718 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3719 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3721 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3722 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3723 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3724 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3725 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3726 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3728 static enum netdev_features
3729 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3731 uint32_t ofp10 = ntohl(ofp10_);
3732 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3736 netdev_port_features_to_ofp10(enum netdev_features features)
3738 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3741 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3742 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3743 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3744 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3745 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3746 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3747 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3748 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3749 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3750 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3751 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3752 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3753 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3754 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3755 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3756 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3758 static enum netdev_features
3759 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3761 return ntohl(ofp11) & 0xffff;
3765 netdev_port_features_to_ofp11(enum netdev_features features)
3767 return htonl(features & 0xffff);
3771 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3772 const struct ofp10_phy_port *opp)
3774 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3775 pp->hw_addr = opp->hw_addr;
3776 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3778 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3779 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3781 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3782 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3783 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3784 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3786 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3787 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3793 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3794 const struct ofp11_port *op)
3798 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3802 pp->hw_addr = op->hw_addr;
3803 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3805 pp->config = ntohl(op->config) & OFPPC11_ALL;
3806 pp->state = ntohl(op->state) & OFPPS11_ALL;
3808 pp->curr = netdev_port_features_from_ofp11(op->curr);
3809 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3810 pp->supported = netdev_port_features_from_ofp11(op->supported);
3811 pp->peer = netdev_port_features_from_ofp11(op->peer);
3813 pp->curr_speed = ntohl(op->curr_speed);
3814 pp->max_speed = ntohl(op->max_speed);
3820 parse_ofp14_port_ethernet_property(const struct ofpbuf *payload,
3821 struct ofputil_phy_port *pp)
3823 struct ofp14_port_desc_prop_ethernet *eth = payload->data;
3825 if (payload->size != sizeof *eth) {
3826 return OFPERR_OFPBPC_BAD_LEN;
3829 pp->curr = netdev_port_features_from_ofp11(eth->curr);
3830 pp->advertised = netdev_port_features_from_ofp11(eth->advertised);
3831 pp->supported = netdev_port_features_from_ofp11(eth->supported);
3832 pp->peer = netdev_port_features_from_ofp11(eth->peer);
3834 pp->curr_speed = ntohl(eth->curr_speed);
3835 pp->max_speed = ntohl(eth->max_speed);
3841 ofputil_pull_ofp14_port(struct ofputil_phy_port *pp, struct ofpbuf *msg)
3843 struct ofp14_port *op = ofpbuf_try_pull(msg, sizeof *op);
3845 return OFPERR_OFPBRC_BAD_LEN;
3848 size_t len = ntohs(op->length);
3849 if (len < sizeof *op || len - sizeof *op > msg->size) {
3850 return OFPERR_OFPBRC_BAD_LEN;
3854 enum ofperr error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3858 pp->hw_addr = op->hw_addr;
3859 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3861 pp->config = ntohl(op->config) & OFPPC11_ALL;
3862 pp->state = ntohl(op->state) & OFPPS11_ALL;
3864 struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
3866 while (properties.size > 0) {
3867 struct ofpbuf payload;
3871 error = ofpprop_pull(&properties, &payload, &type);
3877 case OFPPDPT14_ETHERNET:
3878 error = parse_ofp14_port_ethernet_property(&payload, pp);
3882 error = OFPPROP_UNKNOWN(true, "port", type);
3895 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3896 struct ofp10_phy_port *opp)
3898 memset(opp, 0, sizeof *opp);
3900 opp->port_no = htons(ofp_to_u16(pp->port_no));
3901 opp->hw_addr = pp->hw_addr;
3902 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3904 opp->config = htonl(pp->config & OFPPC10_ALL);
3905 opp->state = htonl(pp->state & OFPPS10_ALL);
3907 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3908 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3909 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3910 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3914 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3915 struct ofp11_port *op)
3917 memset(op, 0, sizeof *op);
3919 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3920 op->hw_addr = pp->hw_addr;
3921 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3923 op->config = htonl(pp->config & OFPPC11_ALL);
3924 op->state = htonl(pp->state & OFPPS11_ALL);
3926 op->curr = netdev_port_features_to_ofp11(pp->curr);
3927 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3928 op->supported = netdev_port_features_to_ofp11(pp->supported);
3929 op->peer = netdev_port_features_to_ofp11(pp->peer);
3931 op->curr_speed = htonl(pp->curr_speed);
3932 op->max_speed = htonl(pp->max_speed);
3936 ofputil_put_ofp14_port(const struct ofputil_phy_port *pp,
3939 struct ofp14_port *op;
3940 struct ofp14_port_desc_prop_ethernet *eth;
3942 ofpbuf_prealloc_tailroom(b, sizeof *op + sizeof *eth);
3944 op = ofpbuf_put_zeros(b, sizeof *op);
3945 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3946 op->length = htons(sizeof *op + sizeof *eth);
3947 op->hw_addr = pp->hw_addr;
3948 ovs_strlcpy(op->name, pp->name, sizeof op->name);
3949 op->config = htonl(pp->config & OFPPC11_ALL);
3950 op->state = htonl(pp->state & OFPPS11_ALL);
3952 eth = ofpprop_put_zeros(b, OFPPDPT14_ETHERNET, sizeof *eth);
3953 eth->curr = netdev_port_features_to_ofp11(pp->curr);
3954 eth->advertised = netdev_port_features_to_ofp11(pp->advertised);
3955 eth->supported = netdev_port_features_to_ofp11(pp->supported);
3956 eth->peer = netdev_port_features_to_ofp11(pp->peer);
3957 eth->curr_speed = htonl(pp->curr_speed);
3958 eth->max_speed = htonl(pp->max_speed);
3962 ofputil_put_phy_port(enum ofp_version ofp_version,
3963 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3965 switch (ofp_version) {
3966 case OFP10_VERSION: {
3967 struct ofp10_phy_port *opp = ofpbuf_put_uninit(b, sizeof *opp);
3968 ofputil_encode_ofp10_phy_port(pp, opp);
3974 case OFP13_VERSION: {
3975 struct ofp11_port *op = ofpbuf_put_uninit(b, sizeof *op);
3976 ofputil_encode_ofp11_port(pp, op);
3982 ofputil_put_ofp14_port(pp, b);
3991 ofputil_decode_port_desc_stats_request(const struct ofp_header *request,
3994 struct ofpbuf b = ofpbuf_const_initializer(request,
3995 ntohs(request->length));
3996 enum ofpraw raw = ofpraw_pull_assert(&b);
3997 if (raw == OFPRAW_OFPST10_PORT_DESC_REQUEST) {
4000 } else if (raw == OFPRAW_OFPST15_PORT_DESC_REQUEST) {
4001 ovs_be32 *ofp11_port;
4003 ofp11_port = ofpbuf_pull(&b, sizeof *ofp11_port);
4004 return ofputil_port_from_ofp11(*ofp11_port, port);
4011 ofputil_encode_port_desc_stats_request(enum ofp_version ofp_version,
4014 struct ofpbuf *request;
4016 switch (ofp_version) {
4022 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_DESC_REQUEST,
4025 case OFP15_VERSION:{
4026 struct ofp15_port_desc_request *req;
4027 request = ofpraw_alloc(OFPRAW_OFPST15_PORT_DESC_REQUEST,
4029 req = ofpbuf_put_zeros(request, sizeof *req);
4030 req->port_no = ofputil_port_to_ofp11(port);
4041 ofputil_append_port_desc_stats_reply(const struct ofputil_phy_port *pp,
4042 struct ovs_list *replies)
4044 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4045 size_t start_ofs = reply->size;
4047 ofputil_put_phy_port(ofpmp_version(replies), pp, reply);
4048 ofpmp_postappend(replies, start_ofs);
4051 /* ofputil_switch_config */
4053 /* Decodes 'oh', which must be an OFPT_GET_CONFIG_REPLY or OFPT_SET_CONFIG
4054 * message, into 'config'. Returns false if 'oh' contained any flags that
4055 * aren't specified in its version of OpenFlow, true otherwise. */
4057 ofputil_decode_switch_config(const struct ofp_header *oh,
4058 struct ofputil_switch_config *config)
4060 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
4061 ofpraw_pull_assert(&b);
4063 const struct ofp_switch_config *osc = ofpbuf_pull(&b, sizeof *osc);
4064 config->frag = ntohs(osc->flags) & OFPC_FRAG_MASK;
4065 config->miss_send_len = ntohs(osc->miss_send_len);
4067 ovs_be16 valid_mask = htons(OFPC_FRAG_MASK);
4068 if (oh->version < OFP13_VERSION) {
4069 const ovs_be16 ttl_bit = htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4070 valid_mask |= ttl_bit;
4071 config->invalid_ttl_to_controller = (osc->flags & ttl_bit) != 0;
4073 config->invalid_ttl_to_controller = -1;
4076 return !(osc->flags & ~valid_mask);
4080 ofputil_decode_get_config_reply(const struct ofp_header *oh,
4081 struct ofputil_switch_config *config)
4083 ofputil_decode_switch_config(oh, config);
4087 ofputil_decode_set_config(const struct ofp_header *oh,
4088 struct ofputil_switch_config *config)
4090 return (ofputil_decode_switch_config(oh, config)
4092 : OFPERR_OFPSCFC_BAD_FLAGS);
4095 static struct ofpbuf *
4096 ofputil_put_switch_config(const struct ofputil_switch_config *config,
4099 const struct ofp_header *oh = b->data;
4100 struct ofp_switch_config *osc = ofpbuf_put_zeros(b, sizeof *osc);
4101 osc->flags = htons(config->frag);
4102 if (config->invalid_ttl_to_controller > 0 && oh->version < OFP13_VERSION) {
4103 osc->flags |= htons(OFPC_INVALID_TTL_TO_CONTROLLER);
4105 osc->miss_send_len = htons(config->miss_send_len);
4110 ofputil_encode_get_config_reply(const struct ofp_header *request,
4111 const struct ofputil_switch_config *config)
4113 struct ofpbuf *b = ofpraw_alloc_reply(OFPRAW_OFPT_GET_CONFIG_REPLY,
4115 return ofputil_put_switch_config(config, b);
4119 ofputil_encode_set_config(const struct ofputil_switch_config *config,
4120 enum ofp_version version)
4122 struct ofpbuf *b = ofpraw_alloc(OFPRAW_OFPT_SET_CONFIG, version, 0);
4123 return ofputil_put_switch_config(config, b);
4126 /* ofputil_switch_features */
4128 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
4129 OFPC_IP_REASM | OFPC_QUEUE_STATS)
4130 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
4131 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
4132 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
4133 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
4134 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
4135 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
4138 ofputil_capabilities_mask(enum ofp_version ofp_version)
4140 /* Handle capabilities whose bit is unique for all OpenFlow versions */
4141 switch (ofp_version) {
4144 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
4149 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
4151 /* Caller needs to check osf->header.version itself */
4156 /* Pulls an OpenFlow "switch_features" structure from 'b' and decodes it into
4157 * an abstract representation in '*features', readying 'b' to iterate over the
4158 * OpenFlow port structures following 'osf' with later calls to
4159 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an OFPERR_*
4162 ofputil_pull_switch_features(struct ofpbuf *b,
4163 struct ofputil_switch_features *features)
4165 const struct ofp_header *oh = b->data;
4166 enum ofpraw raw = ofpraw_pull_assert(b);
4167 const struct ofp_switch_features *osf = ofpbuf_pull(b, sizeof *osf);
4168 features->datapath_id = ntohll(osf->datapath_id);
4169 features->n_buffers = ntohl(osf->n_buffers);
4170 features->n_tables = osf->n_tables;
4171 features->auxiliary_id = 0;
4173 features->capabilities = ntohl(osf->capabilities) &
4174 ofputil_capabilities_mask(oh->version);
4176 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
4177 if (osf->capabilities & htonl(OFPC10_STP)) {
4178 features->capabilities |= OFPUTIL_C_STP;
4180 features->ofpacts = ofpact_bitmap_from_openflow(osf->actions,
4182 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
4183 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4184 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
4185 features->capabilities |= OFPUTIL_C_GROUP_STATS;
4187 features->ofpacts = 0;
4188 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
4189 features->auxiliary_id = osf->auxiliary_id;
4192 return OFPERR_OFPBRC_BAD_VERSION;
4198 /* In OpenFlow 1.0, 1.1, and 1.2, an OFPT_FEATURES_REPLY message lists all the
4199 * switch's ports, unless there are too many to fit. In OpenFlow 1.3 and
4200 * later, an OFPT_FEATURES_REPLY does not list ports at all.
4202 * Given a buffer 'b' that contains a Features Reply message, this message
4203 * checks if it contains a complete list of the switch's ports. Returns true,
4204 * if so. Returns false if the list is missing (OF1.3+) or incomplete
4205 * (OF1.0/1.1/1.2), and in the latter case removes all of the ports from the
4208 * When this function returns false, the caller should send an OFPST_PORT_DESC
4209 * stats request to get the ports. */
4211 ofputil_switch_features_has_ports(struct ofpbuf *b)
4213 struct ofp_header *oh = b->data;
4214 size_t phy_port_size;
4216 if (oh->version >= OFP13_VERSION) {
4217 /* OpenFlow 1.3+ never has ports in the feature reply. */
4221 phy_port_size = (oh->version == OFP10_VERSION
4222 ? sizeof(struct ofp10_phy_port)
4223 : sizeof(struct ofp11_port));
4224 if (ntohs(oh->length) + phy_port_size <= UINT16_MAX) {
4225 /* There's room for additional ports in the feature reply.
4226 * Assume that the list is complete. */
4230 /* The feature reply has no room for more ports. Probably the list is
4231 * truncated. Drop the ports and tell the caller to retrieve them with
4232 * OFPST_PORT_DESC. */
4233 b->size = sizeof *oh + sizeof(struct ofp_switch_features);
4234 ofpmsg_update_length(b);
4238 /* Returns a buffer owned by the caller that encodes 'features' in the format
4239 * required by 'protocol' with the given 'xid'. The caller should append port
4240 * information to the buffer with subsequent calls to
4241 * ofputil_put_switch_features_port(). */
4243 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
4244 enum ofputil_protocol protocol, ovs_be32 xid)
4246 struct ofp_switch_features *osf;
4248 enum ofp_version version;
4251 version = ofputil_protocol_to_ofp_version(protocol);
4254 raw = OFPRAW_OFPT10_FEATURES_REPLY;
4258 raw = OFPRAW_OFPT11_FEATURES_REPLY;
4263 raw = OFPRAW_OFPT13_FEATURES_REPLY;
4268 b = ofpraw_alloc_xid(raw, version, xid, 0);
4269 osf = ofpbuf_put_zeros(b, sizeof *osf);
4270 osf->datapath_id = htonll(features->datapath_id);
4271 osf->n_buffers = htonl(features->n_buffers);
4272 osf->n_tables = features->n_tables;
4274 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
4275 osf->capabilities = htonl(features->capabilities &
4276 ofputil_capabilities_mask(version));
4279 if (features->capabilities & OFPUTIL_C_STP) {
4280 osf->capabilities |= htonl(OFPC10_STP);
4282 osf->actions = ofpact_bitmap_to_openflow(features->ofpacts,
4288 osf->auxiliary_id = features->auxiliary_id;
4292 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
4293 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
4303 /* Encodes 'pp' into the format required by the switch_features message already
4304 * in 'b', which should have been returned by ofputil_encode_switch_features(),
4305 * and appends the encoded version to 'b'. */
4307 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
4310 const struct ofp_header *oh = b->data;
4312 if (oh->version < OFP13_VERSION) {
4313 /* Try adding a port description to the message, but drop it again if
4314 * the buffer overflows. (This possibility for overflow is why
4315 * OpenFlow 1.3+ moved port descriptions into a multipart message.) */
4316 size_t start_ofs = b->size;
4317 ofputil_put_phy_port(oh->version, pp, b);
4318 if (b->size > UINT16_MAX) {
4319 b->size = start_ofs;
4324 /* ofputil_port_status */
4326 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
4327 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
4329 ofputil_decode_port_status(const struct ofp_header *oh,
4330 struct ofputil_port_status *ps)
4332 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
4333 ofpraw_pull_assert(&b);
4335 const struct ofp_port_status *ops = ofpbuf_pull(&b, sizeof *ops);
4336 if (ops->reason != OFPPR_ADD &&
4337 ops->reason != OFPPR_DELETE &&
4338 ops->reason != OFPPR_MODIFY) {
4339 return OFPERR_NXBRC_BAD_REASON;
4341 ps->reason = ops->reason;
4343 int retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
4344 ovs_assert(retval != EOF);
4348 /* Converts the abstract form of a "port status" message in '*ps' into an
4349 * OpenFlow message suitable for 'protocol', and returns that encoded form in
4350 * a buffer owned by the caller. */
4352 ofputil_encode_port_status(const struct ofputil_port_status *ps,
4353 enum ofputil_protocol protocol)
4355 struct ofp_port_status *ops;
4357 enum ofp_version version;
4360 version = ofputil_protocol_to_ofp_version(protocol);
4363 raw = OFPRAW_OFPT10_PORT_STATUS;
4369 raw = OFPRAW_OFPT11_PORT_STATUS;
4374 raw = OFPRAW_OFPT14_PORT_STATUS;
4381 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
4382 ops = ofpbuf_put_zeros(b, sizeof *ops);
4383 ops->reason = ps->reason;
4384 ofputil_put_phy_port(version, &ps->desc, b);
4385 ofpmsg_update_length(b);
4389 /* ofputil_port_mod */
4392 parse_port_mod_ethernet_property(struct ofpbuf *property,
4393 struct ofputil_port_mod *pm)
4398 error = ofpprop_parse_be32(property, &advertise);
4400 pm->advertise = netdev_port_features_from_ofp11(advertise);
4405 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
4406 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
4408 ofputil_decode_port_mod(const struct ofp_header *oh,
4409 struct ofputil_port_mod *pm, bool loose)
4411 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
4412 enum ofpraw raw = ofpraw_pull_assert(&b);
4413 if (raw == OFPRAW_OFPT10_PORT_MOD) {
4414 const struct ofp10_port_mod *opm = b.data;
4416 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
4417 pm->hw_addr = opm->hw_addr;
4418 pm->config = ntohl(opm->config) & OFPPC10_ALL;
4419 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
4420 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
4421 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
4422 const struct ofp11_port_mod *opm = b.data;
4425 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4430 pm->hw_addr = opm->hw_addr;
4431 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4432 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4433 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
4434 } else if (raw == OFPRAW_OFPT14_PORT_MOD) {
4435 const struct ofp14_port_mod *opm = ofpbuf_pull(&b, sizeof *opm);
4438 memset(pm, 0, sizeof *pm);
4440 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
4445 pm->hw_addr = opm->hw_addr;
4446 pm->config = ntohl(opm->config) & OFPPC11_ALL;
4447 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
4449 while (b.size > 0) {
4450 struct ofpbuf property;
4454 error = ofpprop_pull(&b, &property, &type);
4460 case OFPPMPT14_ETHERNET:
4461 error = parse_port_mod_ethernet_property(&property, pm);
4465 error = OFPPROP_UNKNOWN(loose, "port_mod", type);
4474 return OFPERR_OFPBRC_BAD_TYPE;
4477 pm->config &= pm->mask;
4481 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
4482 * message suitable for 'protocol', and returns that encoded form in a buffer
4483 * owned by the caller. */
4485 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
4486 enum ofputil_protocol protocol)
4488 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4491 switch (ofp_version) {
4492 case OFP10_VERSION: {
4493 struct ofp10_port_mod *opm;
4495 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
4496 opm = ofpbuf_put_zeros(b, sizeof *opm);
4497 opm->port_no = htons(ofp_to_u16(pm->port_no));
4498 opm->hw_addr = pm->hw_addr;
4499 opm->config = htonl(pm->config & OFPPC10_ALL);
4500 opm->mask = htonl(pm->mask & OFPPC10_ALL);
4501 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
4507 case OFP13_VERSION: {
4508 struct ofp11_port_mod *opm;
4510 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
4511 opm = ofpbuf_put_zeros(b, sizeof *opm);
4512 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4513 opm->hw_addr = pm->hw_addr;
4514 opm->config = htonl(pm->config & OFPPC11_ALL);
4515 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4516 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
4520 case OFP15_VERSION: {
4521 struct ofp14_port_mod *opm;
4523 b = ofpraw_alloc(OFPRAW_OFPT14_PORT_MOD, ofp_version, 0);
4524 opm = ofpbuf_put_zeros(b, sizeof *opm);
4525 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
4526 opm->hw_addr = pm->hw_addr;
4527 opm->config = htonl(pm->config & OFPPC11_ALL);
4528 opm->mask = htonl(pm->mask & OFPPC11_ALL);
4530 if (pm->advertise) {
4531 ofpprop_put_be32(b, OFPPMPT14_ETHERNET,
4532 netdev_port_features_to_ofp11(pm->advertise));
4543 /* Table features. */
4546 pull_table_feature_property(struct ofpbuf *msg, struct ofpbuf *payload,
4551 error = ofpprop_pull(msg, payload, typep);
4552 if (payload && !error) {
4553 ofpbuf_pull(payload, (char *)payload->msg - (char *)payload->header);
4559 parse_action_bitmap(struct ofpbuf *payload, enum ofp_version ofp_version,
4564 while (payload->size > 0) {
4568 error = ofpprop_pull__(payload, NULL, 1, 0x10000, &type);
4572 if (type < CHAR_BIT * sizeof types) {
4573 types |= 1u << type;
4577 *ofpacts = ofpact_bitmap_from_openflow(htonl(types), ofp_version);
4582 parse_instruction_ids(struct ofpbuf *payload, bool loose, uint32_t *insts)
4585 while (payload->size > 0) {
4586 enum ovs_instruction_type inst;
4590 /* OF1.3 and OF1.4 aren't clear about padding in the instruction IDs.
4591 * It seems clear that they aren't padded to 8 bytes, though, because
4592 * both standards say that "non-experimenter instructions are 4 bytes"
4593 * and do not mention any padding before the first instruction ID.
4594 * (There wouldn't be any point in padding to 8 bytes if the IDs were
4595 * aligned on an odd 4-byte boundary.)
4597 * Anyway, we just assume they're all glommed together on byte
4599 error = ofpprop_pull__(payload, NULL, 1, 0x10000, &ofpit);
4604 error = ovs_instruction_type_from_inst_type(&inst, ofpit);
4606 *insts |= 1u << inst;
4607 } else if (!loose) {
4615 parse_table_features_next_table(struct ofpbuf *payload,
4616 unsigned long int *next_tables)
4620 memset(next_tables, 0, bitmap_n_bytes(255));
4621 for (i = 0; i < payload->size; i++) {
4622 uint8_t id = ((const uint8_t *) payload->data)[i];
4624 return OFPERR_OFPBPC_BAD_VALUE;
4626 bitmap_set1(next_tables, id);
4632 parse_oxms(struct ofpbuf *payload, bool loose,
4633 struct mf_bitmap *exactp, struct mf_bitmap *maskedp)
4635 struct mf_bitmap exact = MF_BITMAP_INITIALIZER;
4636 struct mf_bitmap masked = MF_BITMAP_INITIALIZER;
4638 while (payload->size > 0) {
4639 const struct mf_field *field;
4643 error = nx_pull_header(payload, &field, &hasmask);
4645 bitmap_set1(hasmask ? masked.bm : exact.bm, field->id);
4646 } else if (error != OFPERR_OFPBMC_BAD_FIELD || !loose) {
4652 } else if (!bitmap_is_all_zeros(exact.bm, MFF_N_IDS)) {
4653 return OFPERR_OFPBMC_BAD_MASK;
4657 } else if (!bitmap_is_all_zeros(masked.bm, MFF_N_IDS)) {
4658 return OFPERR_OFPBMC_BAD_MASK;
4663 /* Converts an OFPMP_TABLE_FEATURES request or reply in 'msg' into an abstract
4664 * ofputil_table_features in 'tf'.
4666 * If 'loose' is true, this function ignores properties and values that it does
4667 * not understand, as a controller would want to do when interpreting
4668 * capabilities provided by a switch. If 'loose' is false, this function
4669 * treats unknown properties and values as an error, as a switch would want to
4670 * do when interpreting a configuration request made by a controller.
4672 * A single OpenFlow message can specify features for multiple tables. Calling
4673 * this function multiple times for a single 'msg' iterates through the tables
4674 * in the message. The caller must initially leave 'msg''s layer pointers null
4675 * and not modify them between calls.
4677 * Returns 0 if successful, EOF if no tables were left in this 'msg', otherwise
4678 * a positive "enum ofperr" value. */
4680 ofputil_decode_table_features(struct ofpbuf *msg,
4681 struct ofputil_table_features *tf, bool loose)
4683 memset(tf, 0, sizeof *tf);
4686 ofpraw_pull_assert(msg);
4693 const struct ofp_header *oh = msg->header;
4694 struct ofp13_table_features *otf = msg->data;
4695 if (msg->size < sizeof *otf) {
4696 return OFPERR_OFPBPC_BAD_LEN;
4699 unsigned int len = ntohs(otf->length);
4700 if (len < sizeof *otf || len % 8 || len > msg->size) {
4701 return OFPERR_OFPBPC_BAD_LEN;
4704 tf->table_id = otf->table_id;
4705 if (tf->table_id == OFPTT_ALL) {
4706 return OFPERR_OFPTFFC_BAD_TABLE;
4709 ovs_strlcpy(tf->name, otf->name, OFP_MAX_TABLE_NAME_LEN);
4710 tf->metadata_match = otf->metadata_match;
4711 tf->metadata_write = otf->metadata_write;
4712 tf->miss_config = OFPUTIL_TABLE_MISS_DEFAULT;
4713 if (oh->version >= OFP14_VERSION) {
4714 uint32_t caps = ntohl(otf->capabilities);
4715 tf->supports_eviction = (caps & OFPTC14_EVICTION) != 0;
4716 tf->supports_vacancy_events = (caps & OFPTC14_VACANCY_EVENTS) != 0;
4718 tf->supports_eviction = -1;
4719 tf->supports_vacancy_events = -1;
4721 tf->max_entries = ntohl(otf->max_entries);
4723 struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
4725 ofpbuf_pull(&properties, sizeof *otf);
4726 while (properties.size > 0) {
4727 struct ofpbuf payload;
4731 error = pull_table_feature_property(&properties, &payload, &type);
4736 switch ((enum ofp13_table_feature_prop_type) type) {
4737 case OFPTFPT13_INSTRUCTIONS:
4738 error = parse_instruction_ids(&payload, loose,
4739 &tf->nonmiss.instructions);
4741 case OFPTFPT13_INSTRUCTIONS_MISS:
4742 error = parse_instruction_ids(&payload, loose,
4743 &tf->miss.instructions);
4746 case OFPTFPT13_NEXT_TABLES:
4747 error = parse_table_features_next_table(&payload,
4750 case OFPTFPT13_NEXT_TABLES_MISS:
4751 error = parse_table_features_next_table(&payload, tf->miss.next);
4754 case OFPTFPT13_WRITE_ACTIONS:
4755 error = parse_action_bitmap(&payload, oh->version,
4756 &tf->nonmiss.write.ofpacts);
4758 case OFPTFPT13_WRITE_ACTIONS_MISS:
4759 error = parse_action_bitmap(&payload, oh->version,
4760 &tf->miss.write.ofpacts);
4763 case OFPTFPT13_APPLY_ACTIONS:
4764 error = parse_action_bitmap(&payload, oh->version,
4765 &tf->nonmiss.apply.ofpacts);
4767 case OFPTFPT13_APPLY_ACTIONS_MISS:
4768 error = parse_action_bitmap(&payload, oh->version,
4769 &tf->miss.apply.ofpacts);
4772 case OFPTFPT13_MATCH:
4773 error = parse_oxms(&payload, loose, &tf->match, &tf->mask);
4775 case OFPTFPT13_WILDCARDS:
4776 error = parse_oxms(&payload, loose, &tf->wildcard, NULL);
4779 case OFPTFPT13_WRITE_SETFIELD:
4780 error = parse_oxms(&payload, loose,
4781 &tf->nonmiss.write.set_fields, NULL);
4783 case OFPTFPT13_WRITE_SETFIELD_MISS:
4784 error = parse_oxms(&payload, loose,
4785 &tf->miss.write.set_fields, NULL);
4787 case OFPTFPT13_APPLY_SETFIELD:
4788 error = parse_oxms(&payload, loose,
4789 &tf->nonmiss.apply.set_fields, NULL);
4791 case OFPTFPT13_APPLY_SETFIELD_MISS:
4792 error = parse_oxms(&payload, loose,
4793 &tf->miss.apply.set_fields, NULL);
4796 case OFPTFPT13_EXPERIMENTER:
4797 case OFPTFPT13_EXPERIMENTER_MISS:
4799 error = OFPPROP_UNKNOWN(loose, "table features", type);
4807 /* Fix inconsistencies:
4809 * - Turn on 'match' bits that are set in 'mask', because maskable
4810 * fields are matchable.
4812 * - Turn on 'wildcard' bits that are set in 'mask', because a field
4813 * that is arbitrarily maskable can be wildcarded entirely.
4815 * - Turn off 'wildcard' bits that are not in 'match', because a field
4816 * must be matchable for it to be meaningfully wildcarded. */
4817 bitmap_or(tf->match.bm, tf->mask.bm, MFF_N_IDS);
4818 bitmap_or(tf->wildcard.bm, tf->mask.bm, MFF_N_IDS);
4819 bitmap_and(tf->wildcard.bm, tf->match.bm, MFF_N_IDS);
4824 /* Encodes and returns a request to obtain the table features of a switch.
4825 * The message is encoded for OpenFlow version 'ofp_version'. */
4827 ofputil_encode_table_features_request(enum ofp_version ofp_version)
4829 struct ofpbuf *request = NULL;
4831 switch (ofp_version) {
4835 ovs_fatal(0, "dump-table-features needs OpenFlow 1.3 or later "
4836 "(\'-O OpenFlow13\')");
4840 request = ofpraw_alloc(OFPRAW_OFPST13_TABLE_FEATURES_REQUEST,
4851 put_fields_property(struct ofpbuf *reply,
4852 const struct mf_bitmap *fields,
4853 const struct mf_bitmap *masks,
4854 enum ofp13_table_feature_prop_type property,
4855 enum ofp_version version)
4860 start_ofs = ofpprop_start(reply, property);
4861 BITMAP_FOR_EACH_1 (field, MFF_N_IDS, fields->bm) {
4862 nx_put_header(reply, field, version,
4863 masks && bitmap_is_set(masks->bm, field));
4865 ofpprop_end(reply, start_ofs);
4869 put_table_action_features(struct ofpbuf *reply,
4870 const struct ofputil_table_action_features *taf,
4871 enum ofp13_table_feature_prop_type actions_type,
4872 enum ofp13_table_feature_prop_type set_fields_type,
4873 int miss_offset, enum ofp_version version)
4875 ofpprop_put_bitmap(reply, actions_type + miss_offset,
4876 ntohl(ofpact_bitmap_to_openflow(taf->ofpacts,
4878 put_fields_property(reply, &taf->set_fields, NULL,
4879 set_fields_type + miss_offset, version);
4883 put_table_instruction_features(
4884 struct ofpbuf *reply, const struct ofputil_table_instruction_features *tif,
4885 int miss_offset, enum ofp_version version)
4890 ofpprop_put_bitmap(reply, OFPTFPT13_INSTRUCTIONS + miss_offset,
4891 ntohl(ovsinst_bitmap_to_openflow(tif->instructions,
4894 start_ofs = ofpprop_start(reply, OFPTFPT13_NEXT_TABLES + miss_offset);
4895 BITMAP_FOR_EACH_1 (table_id, 255, tif->next) {
4896 ofpbuf_put(reply, &table_id, 1);
4898 ofpprop_end(reply, start_ofs);
4900 put_table_action_features(reply, &tif->write,
4901 OFPTFPT13_WRITE_ACTIONS,
4902 OFPTFPT13_WRITE_SETFIELD, miss_offset, version);
4903 put_table_action_features(reply, &tif->apply,
4904 OFPTFPT13_APPLY_ACTIONS,
4905 OFPTFPT13_APPLY_SETFIELD, miss_offset, version);
4909 ofputil_append_table_features_reply(const struct ofputil_table_features *tf,
4910 struct ovs_list *replies)
4912 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
4913 enum ofp_version version = ofpmp_version(replies);
4914 size_t start_ofs = reply->size;
4915 struct ofp13_table_features *otf;
4917 otf = ofpbuf_put_zeros(reply, sizeof *otf);
4918 otf->table_id = tf->table_id;
4919 ovs_strlcpy(otf->name, tf->name, sizeof otf->name);
4920 otf->metadata_match = tf->metadata_match;
4921 otf->metadata_write = tf->metadata_write;
4922 if (version >= OFP14_VERSION) {
4923 if (tf->supports_eviction) {
4924 otf->capabilities |= htonl(OFPTC14_EVICTION);
4926 if (tf->supports_vacancy_events) {
4927 otf->capabilities |= htonl(OFPTC14_VACANCY_EVENTS);
4930 otf->max_entries = htonl(tf->max_entries);
4932 put_table_instruction_features(reply, &tf->nonmiss, 0, version);
4933 put_table_instruction_features(reply, &tf->miss, 1, version);
4935 put_fields_property(reply, &tf->match, &tf->mask,
4936 OFPTFPT13_MATCH, version);
4937 put_fields_property(reply, &tf->wildcard, NULL,
4938 OFPTFPT13_WILDCARDS, version);
4940 otf = ofpbuf_at_assert(reply, start_ofs, sizeof *otf);
4941 otf->length = htons(reply->size - start_ofs);
4942 ofpmp_postappend(replies, start_ofs);
4946 parse_table_desc_vacancy_property(struct ofpbuf *property,
4947 struct ofputil_table_desc *td)
4949 struct ofp14_table_mod_prop_vacancy *otv = property->data;
4951 if (property->size != sizeof *otv) {
4952 return OFPERR_OFPBPC_BAD_LEN;
4955 td->table_vacancy.vacancy_down = otv->vacancy_down;
4956 td->table_vacancy.vacancy_up = otv->vacancy_up;
4957 td->table_vacancy.vacancy = otv->vacancy;
4961 /* Decodes the next OpenFlow "table desc" message (of possibly several) from
4962 * 'msg' into an abstract form in '*td'. Returns 0 if successful, EOF if the
4963 * last "table desc" in 'msg' was already decoded, otherwise an OFPERR_*
4966 ofputil_decode_table_desc(struct ofpbuf *msg,
4967 struct ofputil_table_desc *td,
4968 enum ofp_version version)
4970 memset(td, 0, sizeof *td);
4973 ofpraw_pull_assert(msg);
4980 struct ofp14_table_desc *otd = ofpbuf_try_pull(msg, sizeof *otd);
4982 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply has %"PRIu32" "
4983 "leftover bytes at end", msg->size);
4984 return OFPERR_OFPBRC_BAD_LEN;
4987 td->table_id = otd->table_id;
4988 size_t length = ntohs(otd->length);
4989 if (length < sizeof *otd || length - sizeof *otd > msg->size) {
4990 VLOG_WARN_RL(&bad_ofmsg_rl, "OFP14_TABLE_DESC reply claims invalid "
4991 "length %"PRIuSIZE, length);
4992 return OFPERR_OFPBRC_BAD_LEN;
4994 length -= sizeof *otd;
4996 td->eviction = ofputil_decode_table_eviction(otd->config, version);
4997 td->vacancy = ofputil_decode_table_vacancy(otd->config, version);
4998 td->eviction_flags = UINT32_MAX;
5000 struct ofpbuf properties = ofpbuf_const_initializer(
5001 ofpbuf_pull(msg, length), length);
5002 while (properties.size > 0) {
5003 struct ofpbuf payload;
5007 error = ofpprop_pull(&properties, &payload, &type);
5013 case OFPTMPT14_EVICTION:
5014 error = ofpprop_parse_u32(&payload, &td->eviction_flags);
5017 case OFPTMPT14_VACANCY:
5018 error = parse_table_desc_vacancy_property(&payload, td);
5022 error = OFPPROP_UNKNOWN(true, "table_desc", type);
5034 /* Encodes and returns a request to obtain description of tables of a switch.
5035 * The message is encoded for OpenFlow version 'ofp_version'. */
5037 ofputil_encode_table_desc_request(enum ofp_version ofp_version)
5039 struct ofpbuf *request = NULL;
5041 if (ofp_version >= OFP14_VERSION) {
5042 request = ofpraw_alloc(OFPRAW_OFPST14_TABLE_DESC_REQUEST,
5045 ovs_fatal(0, "dump-table-desc needs OpenFlow 1.4 or later "
5046 "(\'-O OpenFlow14\')");
5052 /* Function to append Table desc information in a reply list. */
5054 ofputil_append_table_desc_reply(const struct ofputil_table_desc *td,
5055 struct ovs_list *replies,
5056 enum ofp_version version)
5058 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
5060 struct ofp14_table_desc *otd;
5062 start_otd = reply->size;
5063 ofpbuf_put_zeros(reply, sizeof *otd);
5064 if (td->eviction_flags != UINT32_MAX) {
5065 ofpprop_put_u32(reply, OFPTMPT14_EVICTION, td->eviction_flags);
5067 if (td->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5068 struct ofp14_table_mod_prop_vacancy *otv;
5070 otv = ofpprop_put_zeros(reply, OFPTMPT14_VACANCY, sizeof *otv);
5071 otv->vacancy_down = td->table_vacancy.vacancy_down;
5072 otv->vacancy_up = td->table_vacancy.vacancy_up;
5073 otv->vacancy = td->table_vacancy.vacancy;
5076 otd = ofpbuf_at_assert(reply, start_otd, sizeof *otd);
5077 otd->length = htons(reply->size - start_otd);
5078 otd->table_id = td->table_id;
5079 otd->config = ofputil_encode_table_config(OFPUTIL_TABLE_MISS_DEFAULT,
5080 td->eviction, td->vacancy,
5082 ofpmp_postappend(replies, start_otd);
5085 /* This function parses Vacancy property, and decodes the
5086 * ofp14_table_mod_prop_vacancy in ofputil_table_mod.
5087 * Returns OFPERR_OFPBPC_BAD_VALUE error code when vacancy_down is
5088 * greater than vacancy_up and also when current vacancy has non-zero
5089 * value. Returns 0 on success. */
5091 parse_table_mod_vacancy_property(struct ofpbuf *property,
5092 struct ofputil_table_mod *tm)
5094 struct ofp14_table_mod_prop_vacancy *otv = property->data;
5096 if (property->size != sizeof *otv) {
5097 return OFPERR_OFPBPC_BAD_LEN;
5099 tm->table_vacancy.vacancy_down = otv->vacancy_down;
5100 tm->table_vacancy.vacancy_up = otv->vacancy_up;
5101 if (tm->table_vacancy.vacancy_down > tm->table_vacancy.vacancy_up) {
5102 OFPPROP_LOG(&bad_ofmsg_rl, false,
5103 "Value of vacancy_down is greater than vacancy_up");
5104 return OFPERR_OFPBPC_BAD_VALUE;
5106 if (tm->table_vacancy.vacancy_down > 100 ||
5107 tm->table_vacancy.vacancy_up > 100) {
5108 OFPPROP_LOG(&bad_ofmsg_rl, false, "Vacancy threshold percentage "
5109 "should not be greater than 100");
5110 return OFPERR_OFPBPC_BAD_VALUE;
5112 tm->table_vacancy.vacancy = otv->vacancy;
5113 if (tm->table_vacancy.vacancy) {
5114 OFPPROP_LOG(&bad_ofmsg_rl, false,
5115 "Vacancy value should be zero for table-mod messages");
5116 return OFPERR_OFPBPC_BAD_VALUE;
5121 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5122 * table configuration (a table mod, table stats, or table features message),
5123 * returns the table vacancy configuration that it specifies.
5125 * Only OpenFlow 1.4 and later specify table vacancy configuration this way,
5126 * so for other 'version' this function always returns
5127 * OFPUTIL_TABLE_VACANCY_DEFAULT. */
5128 static enum ofputil_table_vacancy
5129 ofputil_decode_table_vacancy(ovs_be32 config, enum ofp_version version)
5131 return (version < OFP14_VERSION ? OFPUTIL_TABLE_VACANCY_DEFAULT
5132 : config & htonl(OFPTC14_VACANCY_EVENTS) ? OFPUTIL_TABLE_VACANCY_ON
5133 : OFPUTIL_TABLE_VACANCY_OFF);
5136 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5137 * table configuration (a table mod, table stats, or table features message),
5138 * returns the table eviction configuration that it specifies.
5140 * Only OpenFlow 1.4 and later specify table eviction configuration this way,
5141 * so for other 'version' values this function always returns
5142 * OFPUTIL_TABLE_EVICTION_DEFAULT. */
5143 static enum ofputil_table_eviction
5144 ofputil_decode_table_eviction(ovs_be32 config, enum ofp_version version)
5146 return (version < OFP14_VERSION ? OFPUTIL_TABLE_EVICTION_DEFAULT
5147 : config & htonl(OFPTC14_EVICTION) ? OFPUTIL_TABLE_EVICTION_ON
5148 : OFPUTIL_TABLE_EVICTION_OFF);
5151 /* Returns a bitmap of OFPTC* values suitable for 'config' fields in various
5152 * OpenFlow messages of the given 'version', based on the provided 'miss' and
5153 * 'eviction' values. */
5155 ofputil_encode_table_config(enum ofputil_table_miss miss,
5156 enum ofputil_table_eviction eviction,
5157 enum ofputil_table_vacancy vacancy,
5158 enum ofp_version version)
5160 uint32_t config = 0;
5161 /* See the section "OFPTC_* Table Configuration" in DESIGN.md for more
5162 * information on the crazy evolution of this field. */
5165 /* OpenFlow 1.0 didn't have such a field, any value ought to do. */
5170 /* OpenFlow 1.1 and 1.2 define only OFPTC11_TABLE_MISS_*. */
5172 case OFPUTIL_TABLE_MISS_DEFAULT:
5173 /* Really this shouldn't be used for encoding (the caller should
5174 * provide a specific value) but I can't imagine that defaulting to
5175 * the fall-through case here will hurt. */
5176 case OFPUTIL_TABLE_MISS_CONTROLLER:
5178 return htonl(OFPTC11_TABLE_MISS_CONTROLLER);
5179 case OFPUTIL_TABLE_MISS_CONTINUE:
5180 return htonl(OFPTC11_TABLE_MISS_CONTINUE);
5181 case OFPUTIL_TABLE_MISS_DROP:
5182 return htonl(OFPTC11_TABLE_MISS_DROP);
5187 /* OpenFlow 1.3 removed OFPTC11_TABLE_MISS_* and didn't define any new
5188 * flags, so this is correct. */
5193 /* OpenFlow 1.4 introduced OFPTC14_EVICTION and
5194 * OFPTC14_VACANCY_EVENTS. */
5195 if (eviction == OFPUTIL_TABLE_EVICTION_ON) {
5196 config |= OFPTC14_EVICTION;
5198 if (vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5199 config |= OFPTC14_VACANCY_EVENTS;
5201 return htonl(config);
5207 /* Given 'config', taken from an OpenFlow 'version' message that specifies
5208 * table configuration (a table mod, table stats, or table features message),
5209 * returns the table miss configuration that it specifies.
5211 * Only OpenFlow 1.1 and 1.2 specify table miss configurations this way, so for
5212 * other 'version' values this function always returns
5213 * OFPUTIL_TABLE_MISS_DEFAULT. */
5214 static enum ofputil_table_miss
5215 ofputil_decode_table_miss(ovs_be32 config_, enum ofp_version version)
5217 uint32_t config = ntohl(config_);
5219 if (version == OFP11_VERSION || version == OFP12_VERSION) {
5220 switch (config & OFPTC11_TABLE_MISS_MASK) {
5221 case OFPTC11_TABLE_MISS_CONTROLLER:
5222 return OFPUTIL_TABLE_MISS_CONTROLLER;
5224 case OFPTC11_TABLE_MISS_CONTINUE:
5225 return OFPUTIL_TABLE_MISS_CONTINUE;
5227 case OFPTC11_TABLE_MISS_DROP:
5228 return OFPUTIL_TABLE_MISS_DROP;
5231 VLOG_WARN_RL(&bad_ofmsg_rl, "bad table miss config %d", config);
5232 return OFPUTIL_TABLE_MISS_CONTROLLER;
5235 return OFPUTIL_TABLE_MISS_DEFAULT;
5239 /* Decodes the OpenFlow "table mod" message in '*oh' into an abstract form in
5240 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
5242 ofputil_decode_table_mod(const struct ofp_header *oh,
5243 struct ofputil_table_mod *pm)
5245 memset(pm, 0, sizeof *pm);
5246 pm->miss = OFPUTIL_TABLE_MISS_DEFAULT;
5247 pm->eviction = OFPUTIL_TABLE_EVICTION_DEFAULT;
5248 pm->eviction_flags = UINT32_MAX;
5249 pm->vacancy = OFPUTIL_TABLE_VACANCY_DEFAULT;
5251 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
5252 enum ofpraw raw = ofpraw_pull_assert(&b);
5253 if (raw == OFPRAW_OFPT11_TABLE_MOD) {
5254 const struct ofp11_table_mod *otm = b.data;
5256 pm->table_id = otm->table_id;
5257 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5258 } else if (raw == OFPRAW_OFPT14_TABLE_MOD) {
5259 const struct ofp14_table_mod *otm = ofpbuf_pull(&b, sizeof *otm);
5261 pm->table_id = otm->table_id;
5262 pm->miss = ofputil_decode_table_miss(otm->config, oh->version);
5263 pm->eviction = ofputil_decode_table_eviction(otm->config, oh->version);
5264 pm->vacancy = ofputil_decode_table_vacancy(otm->config, oh->version);
5265 while (b.size > 0) {
5266 struct ofpbuf property;
5270 error = ofpprop_pull(&b, &property, &type);
5276 case OFPTMPT14_EVICTION:
5277 error = ofpprop_parse_u32(&property, &pm->eviction);
5280 case OFPTMPT14_VACANCY:
5281 error = parse_table_mod_vacancy_property(&property, pm);
5285 error = OFPERR_OFPBRC_BAD_TYPE;
5294 return OFPERR_OFPBRC_BAD_TYPE;
5300 /* Converts the abstract form of a "table mod" message in '*tm' into an
5301 * OpenFlow message suitable for 'protocol', and returns that encoded form in a
5302 * buffer owned by the caller. */
5304 ofputil_encode_table_mod(const struct ofputil_table_mod *tm,
5305 enum ofputil_protocol protocol)
5307 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5310 switch (ofp_version) {
5311 case OFP10_VERSION: {
5312 ovs_fatal(0, "table mod needs OpenFlow 1.1 or later "
5313 "(\'-O OpenFlow11\')");
5318 case OFP13_VERSION: {
5319 struct ofp11_table_mod *otm;
5321 b = ofpraw_alloc(OFPRAW_OFPT11_TABLE_MOD, ofp_version, 0);
5322 otm = ofpbuf_put_zeros(b, sizeof *otm);
5323 otm->table_id = tm->table_id;
5324 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5325 tm->vacancy, ofp_version);
5329 case OFP15_VERSION: {
5330 struct ofp14_table_mod *otm;
5332 b = ofpraw_alloc(OFPRAW_OFPT14_TABLE_MOD, ofp_version, 0);
5333 otm = ofpbuf_put_zeros(b, sizeof *otm);
5334 otm->table_id = tm->table_id;
5335 otm->config = ofputil_encode_table_config(tm->miss, tm->eviction,
5336 tm->vacancy, ofp_version);
5338 if (tm->eviction_flags != UINT32_MAX) {
5339 ofpprop_put_u32(b, OFPTMPT14_EVICTION, tm->eviction_flags);
5341 if (tm->vacancy == OFPUTIL_TABLE_VACANCY_ON) {
5342 struct ofp14_table_mod_prop_vacancy *otv;
5344 otv = ofpprop_put_zeros(b, OFPTMPT14_VACANCY, sizeof *otv);
5345 otv->vacancy_down = tm->table_vacancy.vacancy_down;
5346 otv->vacancy_up = tm->table_vacancy.vacancy_up;
5357 /* ofputil_role_request */
5359 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
5360 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
5361 * OFPERR_* value. */
5363 ofputil_decode_role_message(const struct ofp_header *oh,
5364 struct ofputil_role_request *rr)
5366 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
5367 enum ofpraw raw = ofpraw_pull_assert(&b);
5368 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
5369 raw == OFPRAW_OFPT12_ROLE_REPLY) {
5370 const struct ofp12_role_request *orr = b.msg;
5372 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5373 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
5374 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
5375 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
5376 return OFPERR_OFPRRFC_BAD_ROLE;
5379 rr->role = ntohl(orr->role);
5380 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
5381 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
5382 : orr->generation_id == OVS_BE64_MAX) {
5383 rr->have_generation_id = false;
5384 rr->generation_id = 0;
5386 rr->have_generation_id = true;
5387 rr->generation_id = ntohll(orr->generation_id);
5389 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
5390 raw == OFPRAW_NXT_ROLE_REPLY) {
5391 const struct nx_role_request *nrr = b.msg;
5393 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
5394 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
5395 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
5397 if (nrr->role != htonl(NX_ROLE_OTHER) &&
5398 nrr->role != htonl(NX_ROLE_MASTER) &&
5399 nrr->role != htonl(NX_ROLE_SLAVE)) {
5400 return OFPERR_OFPRRFC_BAD_ROLE;
5403 rr->role = ntohl(nrr->role) + 1;
5404 rr->have_generation_id = false;
5405 rr->generation_id = 0;
5413 /* Returns an encoded form of a role reply suitable for the "request" in a
5414 * buffer owned by the caller. */
5416 ofputil_encode_role_reply(const struct ofp_header *request,
5417 const struct ofputil_role_request *rr)
5422 raw = ofpraw_decode_assert(request);
5423 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
5424 struct ofp12_role_request *orr;
5426 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
5427 orr = ofpbuf_put_zeros(buf, sizeof *orr);
5429 orr->role = htonl(rr->role);
5430 orr->generation_id = htonll(rr->have_generation_id
5433 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
5434 struct nx_role_request *nrr;
5436 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
5437 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
5438 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
5440 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
5441 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
5442 nrr->role = htonl(rr->role - 1);
5450 /* Encodes "role status" message 'status' for sending in the given
5451 * 'protocol'. Returns the role status message, if 'protocol' supports them,
5452 * otherwise a null pointer. */
5454 ofputil_encode_role_status(const struct ofputil_role_status *status,
5455 enum ofputil_protocol protocol)
5457 enum ofp_version version;
5459 version = ofputil_protocol_to_ofp_version(protocol);
5460 if (version >= OFP14_VERSION) {
5461 struct ofp14_role_status *rstatus;
5464 buf = ofpraw_alloc_xid(OFPRAW_OFPT14_ROLE_STATUS, version, htonl(0),
5466 rstatus = ofpbuf_put_zeros(buf, sizeof *rstatus);
5467 rstatus->role = htonl(status->role);
5468 rstatus->reason = status->reason;
5469 rstatus->generation_id = htonll(status->generation_id);
5478 ofputil_decode_role_status(const struct ofp_header *oh,
5479 struct ofputil_role_status *rs)
5481 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
5482 enum ofpraw raw = ofpraw_pull_assert(&b);
5483 ovs_assert(raw == OFPRAW_OFPT14_ROLE_STATUS);
5485 const struct ofp14_role_status *r = b.msg;
5486 if (r->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
5487 r->role != htonl(OFPCR12_ROLE_EQUAL) &&
5488 r->role != htonl(OFPCR12_ROLE_MASTER) &&
5489 r->role != htonl(OFPCR12_ROLE_SLAVE)) {
5490 return OFPERR_OFPRRFC_BAD_ROLE;
5493 rs->role = ntohl(r->role);
5494 rs->generation_id = ntohll(r->generation_id);
5495 rs->reason = r->reason;
5500 /* Encodes 'rf' according to 'protocol', and returns the encoded message.
5501 * 'protocol' must be for OpenFlow 1.4 or later. */
5503 ofputil_encode_requestforward(const struct ofputil_requestforward *rf,
5504 enum ofputil_protocol protocol)
5506 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
5507 struct ofpbuf *inner;
5509 switch (rf->reason) {
5510 case OFPRFR_GROUP_MOD:
5511 inner = ofputil_encode_group_mod(ofp_version, rf->group_mod);
5514 case OFPRFR_METER_MOD:
5515 inner = ofputil_encode_meter_mod(ofp_version, rf->meter_mod);
5518 case OFPRFR_N_REASONS:
5523 struct ofp_header *inner_oh = inner->data;
5524 inner_oh->xid = rf->xid;
5525 inner_oh->length = htons(inner->size);
5527 struct ofpbuf *outer = ofpraw_alloc_xid(OFPRAW_OFPT14_REQUESTFORWARD,
5528 ofp_version, htonl(0),
5530 ofpbuf_put(outer, inner->data, inner->size);
5531 ofpbuf_delete(inner);
5536 /* Decodes OFPT_REQUESTFORWARD message 'outer'. On success, puts the decoded
5537 * form into '*rf' and returns 0, and the caller is later responsible for
5538 * freeing the content of 'rf', with ofputil_destroy_requestforward(rf). On
5539 * failure, returns an ofperr and '*rf' is indeterminate. */
5541 ofputil_decode_requestforward(const struct ofp_header *outer,
5542 struct ofputil_requestforward *rf)
5544 struct ofpbuf b = ofpbuf_const_initializer(outer, ntohs(outer->length));
5546 /* Skip past outer message. */
5547 enum ofpraw outer_raw = ofpraw_pull_assert(&b);
5548 ovs_assert(outer_raw == OFPRAW_OFPT14_REQUESTFORWARD);
5550 /* Validate inner message. */
5551 if (b.size < sizeof(struct ofp_header)) {
5552 return OFPERR_OFPBFC_MSG_BAD_LEN;
5554 const struct ofp_header *inner = b.data;
5555 unsigned int inner_len = ntohs(inner->length);
5556 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
5557 return OFPERR_OFPBFC_MSG_BAD_LEN;
5559 if (inner->version != outer->version) {
5560 return OFPERR_OFPBRC_BAD_VERSION;
5563 /* Parse inner message. */
5565 enum ofperr error = ofptype_decode(&type, inner);
5570 rf->xid = inner->xid;
5571 if (type == OFPTYPE_GROUP_MOD) {
5572 rf->reason = OFPRFR_GROUP_MOD;
5573 rf->group_mod = xmalloc(sizeof *rf->group_mod);
5574 error = ofputil_decode_group_mod(inner, rf->group_mod);
5576 free(rf->group_mod);
5579 } else if (type == OFPTYPE_METER_MOD) {
5580 rf->reason = OFPRFR_METER_MOD;
5581 rf->meter_mod = xmalloc(sizeof *rf->meter_mod);
5582 ofpbuf_init(&rf->bands, 64);
5583 error = ofputil_decode_meter_mod(inner, rf->meter_mod, &rf->bands);
5585 free(rf->meter_mod);
5586 ofpbuf_uninit(&rf->bands);
5590 return OFPERR_OFPBFC_MSG_UNSUP;
5596 /* Frees the content of 'rf', which should have been initialized through a
5597 * successful call to ofputil_decode_requestforward(). */
5599 ofputil_destroy_requestforward(struct ofputil_requestforward *rf)
5605 switch (rf->reason) {
5606 case OFPRFR_GROUP_MOD:
5607 ofputil_uninit_group_mod(rf->group_mod);
5608 free(rf->group_mod);
5611 case OFPRFR_METER_MOD:
5612 ofpbuf_uninit(&rf->bands);
5613 free(rf->meter_mod);
5616 case OFPRFR_N_REASONS:
5623 /* OpenFlow 1.0 and 1.1 don't distinguish between a field that cannot be
5624 * matched and a field that must be wildcarded. This function returns a bitmap
5625 * that contains both kinds of fields. */
5626 static struct mf_bitmap
5627 wild_or_nonmatchable_fields(const struct ofputil_table_features *features)
5629 struct mf_bitmap wc = features->match;
5630 bitmap_not(wc.bm, MFF_N_IDS);
5631 bitmap_or(wc.bm, features->wildcard.bm, MFF_N_IDS);
5635 struct ofp10_wc_map {
5636 enum ofp10_flow_wildcards wc10;
5637 enum mf_field_id mf;
5640 static const struct ofp10_wc_map ofp10_wc_map[] = {
5641 { OFPFW10_IN_PORT, MFF_IN_PORT },
5642 { OFPFW10_DL_VLAN, MFF_VLAN_VID },
5643 { OFPFW10_DL_SRC, MFF_ETH_SRC },
5644 { OFPFW10_DL_DST, MFF_ETH_DST},
5645 { OFPFW10_DL_TYPE, MFF_ETH_TYPE },
5646 { OFPFW10_NW_PROTO, MFF_IP_PROTO },
5647 { OFPFW10_TP_SRC, MFF_TCP_SRC },
5648 { OFPFW10_TP_DST, MFF_TCP_DST },
5649 { OFPFW10_NW_SRC_MASK, MFF_IPV4_SRC },
5650 { OFPFW10_NW_DST_MASK, MFF_IPV4_DST },
5651 { OFPFW10_DL_VLAN_PCP, MFF_VLAN_PCP },
5652 { OFPFW10_NW_TOS, MFF_IP_DSCP },
5656 mf_bitmap_to_of10(const struct mf_bitmap *fields)
5658 const struct ofp10_wc_map *p;
5661 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5662 if (bitmap_is_set(fields->bm, p->mf)) {
5669 static struct mf_bitmap
5670 mf_bitmap_from_of10(ovs_be32 wc10_)
5672 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5673 const struct ofp10_wc_map *p;
5674 uint32_t wc10 = ntohl(wc10_);
5676 for (p = ofp10_wc_map; p < &ofp10_wc_map[ARRAY_SIZE(ofp10_wc_map)]; p++) {
5677 if (wc10 & p->wc10) {
5678 bitmap_set1(fields.bm, p->mf);
5685 ofputil_put_ofp10_table_stats(const struct ofputil_table_stats *stats,
5686 const struct ofputil_table_features *features,
5689 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5690 struct ofp10_table_stats *out;
5692 out = ofpbuf_put_zeros(buf, sizeof *out);
5693 out->table_id = features->table_id;
5694 ovs_strlcpy(out->name, features->name, sizeof out->name);
5695 out->wildcards = mf_bitmap_to_of10(&wc);
5696 out->max_entries = htonl(features->max_entries);
5697 out->active_count = htonl(stats->active_count);
5698 put_32aligned_be64(&out->lookup_count, htonll(stats->lookup_count));
5699 put_32aligned_be64(&out->matched_count, htonll(stats->matched_count));
5702 struct ofp11_wc_map {
5703 enum ofp11_flow_match_fields wc11;
5704 enum mf_field_id mf;
5707 static const struct ofp11_wc_map ofp11_wc_map[] = {
5708 { OFPFMF11_IN_PORT, MFF_IN_PORT },
5709 { OFPFMF11_DL_VLAN, MFF_VLAN_VID },
5710 { OFPFMF11_DL_VLAN_PCP, MFF_VLAN_PCP },
5711 { OFPFMF11_DL_TYPE, MFF_ETH_TYPE },
5712 { OFPFMF11_NW_TOS, MFF_IP_DSCP },
5713 { OFPFMF11_NW_PROTO, MFF_IP_PROTO },
5714 { OFPFMF11_TP_SRC, MFF_TCP_SRC },
5715 { OFPFMF11_TP_DST, MFF_TCP_DST },
5716 { OFPFMF11_MPLS_LABEL, MFF_MPLS_LABEL },
5717 { OFPFMF11_MPLS_TC, MFF_MPLS_TC },
5718 /* I don't know what OFPFMF11_TYPE means. */
5719 { OFPFMF11_DL_SRC, MFF_ETH_SRC },
5720 { OFPFMF11_DL_DST, MFF_ETH_DST },
5721 { OFPFMF11_NW_SRC, MFF_IPV4_SRC },
5722 { OFPFMF11_NW_DST, MFF_IPV4_DST },
5723 { OFPFMF11_METADATA, MFF_METADATA },
5727 mf_bitmap_to_of11(const struct mf_bitmap *fields)
5729 const struct ofp11_wc_map *p;
5732 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5733 if (bitmap_is_set(fields->bm, p->mf)) {
5740 static struct mf_bitmap
5741 mf_bitmap_from_of11(ovs_be32 wc11_)
5743 struct mf_bitmap fields = MF_BITMAP_INITIALIZER;
5744 const struct ofp11_wc_map *p;
5745 uint32_t wc11 = ntohl(wc11_);
5747 for (p = ofp11_wc_map; p < &ofp11_wc_map[ARRAY_SIZE(ofp11_wc_map)]; p++) {
5748 if (wc11 & p->wc11) {
5749 bitmap_set1(fields.bm, p->mf);
5756 ofputil_put_ofp11_table_stats(const struct ofputil_table_stats *stats,
5757 const struct ofputil_table_features *features,
5760 struct mf_bitmap wc = wild_or_nonmatchable_fields(features);
5761 struct ofp11_table_stats *out;
5763 out = ofpbuf_put_zeros(buf, sizeof *out);
5764 out->table_id = features->table_id;
5765 ovs_strlcpy(out->name, features->name, sizeof out->name);
5766 out->wildcards = mf_bitmap_to_of11(&wc);
5767 out->match = mf_bitmap_to_of11(&features->match);
5768 out->instructions = ovsinst_bitmap_to_openflow(
5769 features->nonmiss.instructions, OFP11_VERSION);
5770 out->write_actions = ofpact_bitmap_to_openflow(
5771 features->nonmiss.write.ofpacts, OFP11_VERSION);
5772 out->apply_actions = ofpact_bitmap_to_openflow(
5773 features->nonmiss.apply.ofpacts, OFP11_VERSION);
5774 out->config = htonl(features->miss_config);
5775 out->max_entries = htonl(features->max_entries);
5776 out->active_count = htonl(stats->active_count);
5777 out->lookup_count = htonll(stats->lookup_count);
5778 out->matched_count = htonll(stats->matched_count);
5782 ofputil_put_ofp12_table_stats(const struct ofputil_table_stats *stats,
5783 const struct ofputil_table_features *features,
5786 struct ofp12_table_stats *out;
5788 out = ofpbuf_put_zeros(buf, sizeof *out);
5789 out->table_id = features->table_id;
5790 ovs_strlcpy(out->name, features->name, sizeof out->name);
5791 out->match = oxm_bitmap_from_mf_bitmap(&features->match, OFP12_VERSION);
5792 out->wildcards = oxm_bitmap_from_mf_bitmap(&features->wildcard,
5794 out->write_actions = ofpact_bitmap_to_openflow(
5795 features->nonmiss.write.ofpacts, OFP12_VERSION);
5796 out->apply_actions = ofpact_bitmap_to_openflow(
5797 features->nonmiss.apply.ofpacts, OFP12_VERSION);
5798 out->write_setfields = oxm_bitmap_from_mf_bitmap(
5799 &features->nonmiss.write.set_fields, OFP12_VERSION);
5800 out->apply_setfields = oxm_bitmap_from_mf_bitmap(
5801 &features->nonmiss.apply.set_fields, OFP12_VERSION);
5802 out->metadata_match = features->metadata_match;
5803 out->metadata_write = features->metadata_write;
5804 out->instructions = ovsinst_bitmap_to_openflow(
5805 features->nonmiss.instructions, OFP12_VERSION);
5806 out->config = ofputil_encode_table_config(features->miss_config,
5807 OFPUTIL_TABLE_EVICTION_DEFAULT,
5808 OFPUTIL_TABLE_VACANCY_DEFAULT,
5810 out->max_entries = htonl(features->max_entries);
5811 out->active_count = htonl(stats->active_count);
5812 out->lookup_count = htonll(stats->lookup_count);
5813 out->matched_count = htonll(stats->matched_count);
5817 ofputil_put_ofp13_table_stats(const struct ofputil_table_stats *stats,
5820 struct ofp13_table_stats *out;
5822 out = ofpbuf_put_zeros(buf, sizeof *out);
5823 out->table_id = stats->table_id;
5824 out->active_count = htonl(stats->active_count);
5825 out->lookup_count = htonll(stats->lookup_count);
5826 out->matched_count = htonll(stats->matched_count);
5830 ofputil_encode_table_stats_reply(const struct ofp_header *request)
5832 return ofpraw_alloc_stats_reply(request, 0);
5836 ofputil_append_table_stats_reply(struct ofpbuf *reply,
5837 const struct ofputil_table_stats *stats,
5838 const struct ofputil_table_features *features)
5840 struct ofp_header *oh = reply->header;
5842 ovs_assert(stats->table_id == features->table_id);
5844 switch ((enum ofp_version) oh->version) {
5846 ofputil_put_ofp10_table_stats(stats, features, reply);
5850 ofputil_put_ofp11_table_stats(stats, features, reply);
5854 ofputil_put_ofp12_table_stats(stats, features, reply);
5860 ofputil_put_ofp13_table_stats(stats, reply);
5869 ofputil_decode_ofp10_table_stats(struct ofpbuf *msg,
5870 struct ofputil_table_stats *stats,
5871 struct ofputil_table_features *features)
5873 struct ofp10_table_stats *ots;
5875 ots = ofpbuf_try_pull(msg, sizeof *ots);
5877 return OFPERR_OFPBRC_BAD_LEN;
5880 features->table_id = ots->table_id;
5881 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5882 features->max_entries = ntohl(ots->max_entries);
5883 features->match = features->wildcard = mf_bitmap_from_of10(ots->wildcards);
5885 stats->table_id = ots->table_id;
5886 stats->active_count = ntohl(ots->active_count);
5887 stats->lookup_count = ntohll(get_32aligned_be64(&ots->lookup_count));
5888 stats->matched_count = ntohll(get_32aligned_be64(&ots->matched_count));
5894 ofputil_decode_ofp11_table_stats(struct ofpbuf *msg,
5895 struct ofputil_table_stats *stats,
5896 struct ofputil_table_features *features)
5898 struct ofp11_table_stats *ots;
5900 ots = ofpbuf_try_pull(msg, sizeof *ots);
5902 return OFPERR_OFPBRC_BAD_LEN;
5905 features->table_id = ots->table_id;
5906 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5907 features->max_entries = ntohl(ots->max_entries);
5908 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5909 ots->instructions, OFP11_VERSION);
5910 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5911 ots->write_actions, OFP11_VERSION);
5912 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5913 ots->write_actions, OFP11_VERSION);
5914 features->miss = features->nonmiss;
5915 features->miss_config = ofputil_decode_table_miss(ots->config,
5917 features->match = mf_bitmap_from_of11(ots->match);
5918 features->wildcard = mf_bitmap_from_of11(ots->wildcards);
5919 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5921 stats->table_id = ots->table_id;
5922 stats->active_count = ntohl(ots->active_count);
5923 stats->lookup_count = ntohll(ots->lookup_count);
5924 stats->matched_count = ntohll(ots->matched_count);
5930 ofputil_decode_ofp12_table_stats(struct ofpbuf *msg,
5931 struct ofputil_table_stats *stats,
5932 struct ofputil_table_features *features)
5934 struct ofp12_table_stats *ots;
5936 ots = ofpbuf_try_pull(msg, sizeof *ots);
5938 return OFPERR_OFPBRC_BAD_LEN;
5941 features->table_id = ots->table_id;
5942 ovs_strlcpy(features->name, ots->name, sizeof features->name);
5943 features->metadata_match = ots->metadata_match;
5944 features->metadata_write = ots->metadata_write;
5945 features->miss_config = ofputil_decode_table_miss(ots->config,
5947 features->max_entries = ntohl(ots->max_entries);
5949 features->nonmiss.instructions = ovsinst_bitmap_from_openflow(
5950 ots->instructions, OFP12_VERSION);
5951 features->nonmiss.write.ofpacts = ofpact_bitmap_from_openflow(
5952 ots->write_actions, OFP12_VERSION);
5953 features->nonmiss.apply.ofpacts = ofpact_bitmap_from_openflow(
5954 ots->apply_actions, OFP12_VERSION);
5955 features->nonmiss.write.set_fields = oxm_bitmap_to_mf_bitmap(
5956 ots->write_setfields, OFP12_VERSION);
5957 features->nonmiss.apply.set_fields = oxm_bitmap_to_mf_bitmap(
5958 ots->apply_setfields, OFP12_VERSION);
5959 features->miss = features->nonmiss;
5961 features->match = oxm_bitmap_to_mf_bitmap(ots->match, OFP12_VERSION);
5962 features->wildcard = oxm_bitmap_to_mf_bitmap(ots->wildcards,
5964 bitmap_or(features->match.bm, features->wildcard.bm, MFF_N_IDS);
5966 stats->table_id = ots->table_id;
5967 stats->active_count = ntohl(ots->active_count);
5968 stats->lookup_count = ntohll(ots->lookup_count);
5969 stats->matched_count = ntohll(ots->matched_count);
5975 ofputil_decode_ofp13_table_stats(struct ofpbuf *msg,
5976 struct ofputil_table_stats *stats,
5977 struct ofputil_table_features *features)
5979 struct ofp13_table_stats *ots;
5981 ots = ofpbuf_try_pull(msg, sizeof *ots);
5983 return OFPERR_OFPBRC_BAD_LEN;
5986 features->table_id = ots->table_id;
5988 stats->table_id = ots->table_id;
5989 stats->active_count = ntohl(ots->active_count);
5990 stats->lookup_count = ntohll(ots->lookup_count);
5991 stats->matched_count = ntohll(ots->matched_count);
5997 ofputil_decode_table_stats_reply(struct ofpbuf *msg,
5998 struct ofputil_table_stats *stats,
5999 struct ofputil_table_features *features)
6001 const struct ofp_header *oh;
6004 ofpraw_pull_assert(msg);
6012 memset(stats, 0, sizeof *stats);
6013 memset(features, 0, sizeof *features);
6014 features->supports_eviction = -1;
6015 features->supports_vacancy_events = -1;
6017 switch ((enum ofp_version) oh->version) {
6019 return ofputil_decode_ofp10_table_stats(msg, stats, features);
6022 return ofputil_decode_ofp11_table_stats(msg, stats, features);
6025 return ofputil_decode_ofp12_table_stats(msg, stats, features);
6030 return ofputil_decode_ofp13_table_stats(msg, stats, features);
6037 /* ofputil_flow_monitor_request */
6039 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
6040 * ofputil_flow_monitor_request in 'rq'.
6042 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
6043 * message. Calling this function multiple times for a single 'msg' iterates
6044 * through the requests. The caller must initially leave 'msg''s layer
6045 * pointers null and not modify them between calls.
6047 * Returns 0 if successful, EOF if no requests were left in this 'msg',
6048 * otherwise an OFPERR_* value. */
6050 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
6053 struct nx_flow_monitor_request *nfmr;
6057 ofpraw_pull_assert(msg);
6064 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
6066 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %"PRIu32" "
6067 "leftover bytes at end", msg->size);
6068 return OFPERR_OFPBRC_BAD_LEN;
6071 flags = ntohs(nfmr->flags);
6072 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
6073 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
6074 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
6075 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
6077 return OFPERR_OFPMOFC_BAD_FLAGS;
6080 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
6081 return OFPERR_NXBRC_MUST_BE_ZERO;
6084 rq->id = ntohl(nfmr->id);
6086 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
6087 rq->table_id = nfmr->table_id;
6089 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
6093 ofputil_append_flow_monitor_request(
6094 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
6096 struct nx_flow_monitor_request *nfmr;
6101 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
6104 start_ofs = msg->size;
6105 ofpbuf_put_zeros(msg, sizeof *nfmr);
6106 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
6108 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
6109 nfmr->id = htonl(rq->id);
6110 nfmr->flags = htons(rq->flags);
6111 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
6112 nfmr->match_len = htons(match_len);
6113 nfmr->table_id = rq->table_id;
6116 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
6117 * into an abstract ofputil_flow_update in 'update'. The caller must have
6118 * initialized update->match to point to space allocated for a match.
6120 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
6121 * actions (except for NXFME_ABBREV, which never includes actions). The caller
6122 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
6123 * will point into the 'ofpacts' buffer.
6125 * Multiple flow updates can be packed into a single OpenFlow message. Calling
6126 * this function multiple times for a single 'msg' iterates through the
6127 * updates. The caller must initially leave 'msg''s layer pointers null and
6128 * not modify them between calls.
6130 * Returns 0 if successful, EOF if no updates were left in this 'msg',
6131 * otherwise an OFPERR_* value. */
6133 ofputil_decode_flow_update(struct ofputil_flow_update *update,
6134 struct ofpbuf *msg, struct ofpbuf *ofpacts)
6136 struct nx_flow_update_header *nfuh;
6137 unsigned int length;
6138 struct ofp_header *oh;
6141 ofpraw_pull_assert(msg);
6144 ofpbuf_clear(ofpacts);
6149 if (msg->size < sizeof(struct nx_flow_update_header)) {
6156 update->event = ntohs(nfuh->event);
6157 length = ntohs(nfuh->length);
6158 if (length > msg->size || length % 8) {
6162 if (update->event == NXFME_ABBREV) {
6163 struct nx_flow_update_abbrev *nfua;
6165 if (length != sizeof *nfua) {
6169 nfua = ofpbuf_pull(msg, sizeof *nfua);
6170 update->xid = nfua->xid;
6172 } else if (update->event == NXFME_ADDED
6173 || update->event == NXFME_DELETED
6174 || update->event == NXFME_MODIFIED) {
6175 struct nx_flow_update_full *nfuf;
6176 unsigned int actions_len;
6177 unsigned int match_len;
6180 if (length < sizeof *nfuf) {
6184 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
6185 match_len = ntohs(nfuf->match_len);
6186 if (sizeof *nfuf + match_len > length) {
6190 update->reason = ntohs(nfuf->reason);
6191 update->idle_timeout = ntohs(nfuf->idle_timeout);
6192 update->hard_timeout = ntohs(nfuf->hard_timeout);
6193 update->table_id = nfuf->table_id;
6194 update->cookie = nfuf->cookie;
6195 update->priority = ntohs(nfuf->priority);
6197 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
6202 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
6203 error = ofpacts_pull_openflow_actions(msg, actions_len, oh->version,
6209 update->ofpacts = ofpacts->data;
6210 update->ofpacts_len = ofpacts->size;
6213 VLOG_WARN_RL(&bad_ofmsg_rl,
6214 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
6215 ntohs(nfuh->event));
6216 return OFPERR_NXBRC_FM_BAD_EVENT;
6220 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %"PRIu32" "
6221 "leftover bytes at end", msg->size);
6222 return OFPERR_OFPBRC_BAD_LEN;
6226 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
6228 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
6230 return ntohl(cancel->id);
6234 ofputil_encode_flow_monitor_cancel(uint32_t id)
6236 struct nx_flow_monitor_cancel *nfmc;
6239 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
6240 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
6241 nfmc->id = htonl(id);
6246 ofputil_start_flow_update(struct ovs_list *replies)
6250 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
6254 list_push_back(replies, &msg->list_node);
6258 ofputil_append_flow_update(const struct ofputil_flow_update *update,
6259 struct ovs_list *replies)
6261 enum ofp_version version = ofpmp_version(replies);
6262 struct nx_flow_update_header *nfuh;
6266 msg = ofpbuf_from_list(list_back(replies));
6267 start_ofs = msg->size;
6269 if (update->event == NXFME_ABBREV) {
6270 struct nx_flow_update_abbrev *nfua;
6272 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
6273 nfua->xid = update->xid;
6275 struct nx_flow_update_full *nfuf;
6278 ofpbuf_put_zeros(msg, sizeof *nfuf);
6279 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
6280 ofpacts_put_openflow_actions(update->ofpacts, update->ofpacts_len, msg,
6282 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
6283 nfuf->reason = htons(update->reason);
6284 nfuf->priority = htons(update->priority);
6285 nfuf->idle_timeout = htons(update->idle_timeout);
6286 nfuf->hard_timeout = htons(update->hard_timeout);
6287 nfuf->match_len = htons(match_len);
6288 nfuf->table_id = update->table_id;
6289 nfuf->cookie = update->cookie;
6292 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
6293 nfuh->length = htons(msg->size - start_ofs);
6294 nfuh->event = htons(update->event);
6296 ofpmp_postappend(replies, start_ofs);
6300 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
6301 enum ofputil_protocol protocol)
6303 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
6307 size = po->ofpacts_len;
6308 if (po->buffer_id == UINT32_MAX) {
6309 size += po->packet_len;
6312 switch (ofp_version) {
6313 case OFP10_VERSION: {
6314 struct ofp10_packet_out *opo;
6317 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
6318 ofpbuf_put_zeros(msg, sizeof *opo);
6319 actions_ofs = msg->size;
6320 ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6324 opo->buffer_id = htonl(po->buffer_id);
6325 opo->in_port = htons(ofp_to_u16(po->in_port));
6326 opo->actions_len = htons(msg->size - actions_ofs);
6334 case OFP15_VERSION: {
6335 struct ofp11_packet_out *opo;
6338 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
6339 ofpbuf_put_zeros(msg, sizeof *opo);
6340 len = ofpacts_put_openflow_actions(po->ofpacts, po->ofpacts_len, msg,
6343 opo->buffer_id = htonl(po->buffer_id);
6344 opo->in_port = ofputil_port_to_ofp11(po->in_port);
6345 opo->actions_len = htons(len);
6353 if (po->buffer_id == UINT32_MAX) {
6354 ofpbuf_put(msg, po->packet, po->packet_len);
6357 ofpmsg_update_length(msg);
6362 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
6364 make_echo_request(enum ofp_version ofp_version)
6366 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
6370 /* Creates and returns an OFPT_ECHO_REPLY message matching the
6371 * OFPT_ECHO_REQUEST message in 'rq'. */
6373 make_echo_reply(const struct ofp_header *rq)
6375 struct ofpbuf rq_buf = ofpbuf_const_initializer(rq, ntohs(rq->length));
6376 ofpraw_pull_assert(&rq_buf);
6378 struct ofpbuf *reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY,
6380 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
6385 ofputil_encode_barrier_request(enum ofp_version ofp_version)
6389 switch (ofp_version) {
6395 type = OFPRAW_OFPT11_BARRIER_REQUEST;
6399 type = OFPRAW_OFPT10_BARRIER_REQUEST;
6406 return ofpraw_alloc(type, ofp_version, 0);
6410 ofputil_frag_handling_to_string(enum ofputil_frag_handling frag)
6413 case OFPUTIL_FRAG_NORMAL: return "normal";
6414 case OFPUTIL_FRAG_DROP: return "drop";
6415 case OFPUTIL_FRAG_REASM: return "reassemble";
6416 case OFPUTIL_FRAG_NX_MATCH: return "nx-match";
6423 ofputil_frag_handling_from_string(const char *s,
6424 enum ofputil_frag_handling *frag)
6426 if (!strcasecmp(s, "normal")) {
6427 *frag = OFPUTIL_FRAG_NORMAL;
6428 } else if (!strcasecmp(s, "drop")) {
6429 *frag = OFPUTIL_FRAG_DROP;
6430 } else if (!strcasecmp(s, "reassemble")) {
6431 *frag = OFPUTIL_FRAG_REASM;
6432 } else if (!strcasecmp(s, "nx-match")) {
6433 *frag = OFPUTIL_FRAG_NX_MATCH;
6440 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
6441 * port number and stores the latter in '*ofp10_port', for the purpose of
6442 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
6443 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
6445 * See the definition of OFP11_MAX for an explanation of the mapping. */
6447 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
6449 uint32_t ofp11_port_h = ntohl(ofp11_port);
6451 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
6452 *ofp10_port = u16_to_ofp(ofp11_port_h);
6454 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
6455 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
6458 *ofp10_port = OFPP_NONE;
6459 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
6460 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
6461 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
6462 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6463 return OFPERR_OFPBAC_BAD_OUT_PORT;
6467 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
6468 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
6470 * See the definition of OFP11_MAX for an explanation of the mapping. */
6472 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
6474 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
6475 ? ofp_to_u16(ofp10_port)
6476 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
6479 #define OFPUTIL_NAMED_PORTS \
6480 OFPUTIL_NAMED_PORT(IN_PORT) \
6481 OFPUTIL_NAMED_PORT(TABLE) \
6482 OFPUTIL_NAMED_PORT(NORMAL) \
6483 OFPUTIL_NAMED_PORT(FLOOD) \
6484 OFPUTIL_NAMED_PORT(ALL) \
6485 OFPUTIL_NAMED_PORT(CONTROLLER) \
6486 OFPUTIL_NAMED_PORT(LOCAL) \
6487 OFPUTIL_NAMED_PORT(ANY) \
6488 OFPUTIL_NAMED_PORT(UNSET)
6490 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
6491 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
6492 OFPUTIL_NAMED_PORTS \
6493 OFPUTIL_NAMED_PORT(NONE)
6495 /* Stores the port number represented by 's' into '*portp'. 's' may be an
6496 * integer or, for reserved ports, the standard OpenFlow name for the port
6499 * Returns true if successful, false if 's' is not a valid OpenFlow port number
6500 * or name. The caller should issue an error message in this case, because
6501 * this function usually does not. (This gives the caller an opportunity to
6502 * look up the port name another way, e.g. by contacting the switch and listing
6503 * the names of all its ports).
6505 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
6506 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
6507 * range as described in include/openflow/openflow-1.1.h. */
6509 ofputil_port_from_string(const char *s, ofp_port_t *portp)
6511 unsigned int port32; /* int is at least 32 bits wide. */
6514 VLOG_WARN("Negative value %s is not a valid port number.", s);
6518 if (str_to_uint(s, 10, &port32)) {
6519 if (port32 < ofp_to_u16(OFPP_MAX)) {
6521 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
6522 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
6523 "be translated to %u when talking to an OF1.1 or "
6524 "later controller", port32, port32 + OFPP11_OFFSET);
6525 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
6526 char name[OFP_MAX_PORT_NAME_LEN];
6528 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
6529 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
6530 "for compatibility with OpenFlow 1.1 and later",
6532 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
6533 VLOG_WARN("port %u is outside the supported range 0 through "
6534 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
6535 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
6538 port32 -= OFPP11_OFFSET;
6541 *portp = u16_to_ofp(port32);
6548 static const struct pair pairs[] = {
6549 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
6550 OFPUTIL_NAMED_PORTS_WITH_NONE
6551 #undef OFPUTIL_NAMED_PORT
6553 const struct pair *p;
6555 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
6556 if (!strcasecmp(s, p->name)) {
6565 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
6566 * Most ports' string representation is just the port number, but for special
6567 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
6569 ofputil_format_port(ofp_port_t port, struct ds *s)
6571 char name[OFP_MAX_PORT_NAME_LEN];
6573 ofputil_port_to_string(port, name, sizeof name);
6574 ds_put_cstr(s, name);
6577 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6578 * representation of OpenFlow port number 'port'. Most ports are represented
6579 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
6580 * by name, e.g. "LOCAL". */
6582 ofputil_port_to_string(ofp_port_t port,
6583 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
6586 #define OFPUTIL_NAMED_PORT(NAME) \
6588 ovs_strlcpy(namebuf, #NAME, bufsize); \
6591 #undef OFPUTIL_NAMED_PORT
6594 snprintf(namebuf, bufsize, "%"PRIu16, port);
6599 /* Stores the group id represented by 's' into '*group_idp'. 's' may be an
6600 * integer or, for reserved group IDs, the standard OpenFlow name for the group
6601 * (either "ANY" or "ALL").
6603 * Returns true if successful, false if 's' is not a valid OpenFlow group ID or
6606 ofputil_group_from_string(const char *s, uint32_t *group_idp)
6608 if (!strcasecmp(s, "any")) {
6609 *group_idp = OFPG_ANY;
6610 } else if (!strcasecmp(s, "all")) {
6611 *group_idp = OFPG_ALL;
6612 } else if (!str_to_uint(s, 10, group_idp)) {
6613 VLOG_WARN("%s is not a valid group ID. (Valid group IDs are "
6614 "32-bit nonnegative integers or the keywords ANY or "
6622 /* Appends to 's' a string representation of the OpenFlow group ID 'group_id'.
6623 * Most groups' string representation is just the number, but for special
6624 * groups, e.g. OFPG_ALL, it is the name, e.g. "ALL". */
6626 ofputil_format_group(uint32_t group_id, struct ds *s)
6628 char name[MAX_GROUP_NAME_LEN];
6630 ofputil_group_to_string(group_id, name, sizeof name);
6631 ds_put_cstr(s, name);
6635 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
6636 * representation of OpenFlow group ID 'group_id'. Most group are represented
6637 * as just their number, but special groups, e.g. OFPG_ALL, are represented
6638 * by name, e.g. "ALL". */
6640 ofputil_group_to_string(uint32_t group_id,
6641 char namebuf[MAX_GROUP_NAME_LEN + 1], size_t bufsize)
6645 ovs_strlcpy(namebuf, "ALL", bufsize);
6649 ovs_strlcpy(namebuf, "ANY", bufsize);
6653 snprintf(namebuf, bufsize, "%"PRIu32, group_id);
6658 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
6659 * 'ofp_version', tries to pull the first element from the array. If
6660 * successful, initializes '*pp' with an abstract representation of the
6661 * port and returns 0. If no ports remain to be decoded, returns EOF.
6662 * On an error, returns a positive OFPERR_* value. */
6664 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
6665 struct ofputil_phy_port *pp)
6667 memset(pp, 0, sizeof *pp);
6669 switch (ofp_version) {
6670 case OFP10_VERSION: {
6671 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
6672 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
6676 case OFP13_VERSION: {
6677 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
6678 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
6682 return b->size ? ofputil_pull_ofp14_port(pp, b) : EOF;
6689 ofputil_normalize_match__(struct match *match, bool may_log)
6692 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
6693 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
6694 MAY_NW_PROTO = 1 << 2, /* nw_proto */
6695 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
6696 MAY_ARP_SHA = 1 << 4, /* arp_sha */
6697 MAY_ARP_THA = 1 << 5, /* arp_tha */
6698 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
6699 MAY_ND_TARGET = 1 << 7, /* nd_target */
6700 MAY_MPLS = 1 << 8, /* mpls label and tc */
6703 struct flow_wildcards wc;
6705 /* Figure out what fields may be matched. */
6706 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
6707 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
6708 if (match->flow.nw_proto == IPPROTO_TCP ||
6709 match->flow.nw_proto == IPPROTO_UDP ||
6710 match->flow.nw_proto == IPPROTO_SCTP ||
6711 match->flow.nw_proto == IPPROTO_ICMP) {
6712 may_match |= MAY_TP_ADDR;
6714 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
6715 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
6716 if (match->flow.nw_proto == IPPROTO_TCP ||
6717 match->flow.nw_proto == IPPROTO_UDP ||
6718 match->flow.nw_proto == IPPROTO_SCTP) {
6719 may_match |= MAY_TP_ADDR;
6720 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
6721 may_match |= MAY_TP_ADDR;
6722 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
6723 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
6724 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
6725 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
6728 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
6729 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
6730 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
6731 } else if (eth_type_mpls(match->flow.dl_type)) {
6732 may_match = MAY_MPLS;
6737 /* Clear the fields that may not be matched. */
6739 if (!(may_match & MAY_NW_ADDR)) {
6740 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
6742 if (!(may_match & MAY_TP_ADDR)) {
6743 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
6745 if (!(may_match & MAY_NW_PROTO)) {
6746 wc.masks.nw_proto = 0;
6748 if (!(may_match & MAY_IPVx)) {
6749 wc.masks.nw_tos = 0;
6750 wc.masks.nw_ttl = 0;
6752 if (!(may_match & MAY_ARP_SHA)) {
6753 WC_UNMASK_FIELD(&wc, arp_sha);
6755 if (!(may_match & MAY_ARP_THA)) {
6756 WC_UNMASK_FIELD(&wc, arp_tha);
6758 if (!(may_match & MAY_IPV6)) {
6759 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
6760 wc.masks.ipv6_label = htonl(0);
6762 if (!(may_match & MAY_ND_TARGET)) {
6763 wc.masks.nd_target = in6addr_any;
6765 if (!(may_match & MAY_MPLS)) {
6766 memset(wc.masks.mpls_lse, 0, sizeof wc.masks.mpls_lse);
6769 /* Log any changes. */
6770 if (!flow_wildcards_equal(&wc, &match->wc)) {
6771 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
6772 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
6775 match_zero_wildcarded_fields(match);
6778 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
6779 VLOG_INFO("normalization changed ofp_match, details:");
6780 VLOG_INFO(" pre: %s", pre);
6781 VLOG_INFO("post: %s", post);
6788 /* "Normalizes" the wildcards in 'match'. That means:
6790 * 1. If the type of level N is known, then only the valid fields for that
6791 * level may be specified. For example, ARP does not have a TOS field,
6792 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
6793 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
6794 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
6797 * 2. If the type of level N is not known (or not understood by Open
6798 * vSwitch), then no fields at all for that level may be specified. For
6799 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
6800 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
6803 * If this function changes 'match', it logs a rate-limited informational
6806 ofputil_normalize_match(struct match *match)
6808 ofputil_normalize_match__(match, true);
6811 /* Same as ofputil_normalize_match() without the logging. Thus, this function
6812 * is suitable for a program's internal use, whereas ofputil_normalize_match()
6813 * sense for use on flows received from elsewhere (so that a bug in the program
6814 * that sent them can be reported and corrected). */
6816 ofputil_normalize_match_quiet(struct match *match)
6818 ofputil_normalize_match__(match, false);
6821 /* Parses a key or a key-value pair from '*stringp'.
6823 * On success: Stores the key into '*keyp'. Stores the value, if present, into
6824 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
6825 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
6826 * are substrings of '*stringp' created by replacing some of its bytes by null
6827 * terminators. Returns true.
6829 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
6830 * NULL and returns false. */
6832 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
6834 char *pos, *key, *value;
6838 pos += strspn(pos, ", \t\r\n");
6840 *keyp = *valuep = NULL;
6845 key_len = strcspn(pos, ":=(, \t\r\n");
6846 if (key[key_len] == ':' || key[key_len] == '=') {
6847 /* The value can be separated by a colon. */
6850 value = key + key_len + 1;
6851 value_len = strcspn(value, ", \t\r\n");
6852 pos = value + value_len + (value[value_len] != '\0');
6853 value[value_len] = '\0';
6854 } else if (key[key_len] == '(') {
6855 /* The value can be surrounded by balanced parentheses. The outermost
6856 * set of parentheses is removed. */
6860 value = key + key_len + 1;
6861 for (value_len = 0; level > 0; value_len++) {
6862 switch (value[value_len]) {
6876 value[value_len - 1] = '\0';
6877 pos = value + value_len;
6879 /* There might be no value at all. */
6880 value = key + key_len; /* Will become the empty string below. */
6881 pos = key + key_len + (key[key_len] != '\0');
6883 key[key_len] = '\0';
6891 /* Encode a dump ports request for 'port', the encoded message
6892 * will be for OpenFlow version 'ofp_version'. Returns message
6893 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
6895 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
6897 struct ofpbuf *request;
6899 switch (ofp_version) {
6900 case OFP10_VERSION: {
6901 struct ofp10_port_stats_request *req;
6902 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
6903 req = ofpbuf_put_zeros(request, sizeof *req);
6904 req->port_no = htons(ofp_to_u16(port));
6911 case OFP15_VERSION: {
6912 struct ofp11_port_stats_request *req;
6913 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
6914 req = ofpbuf_put_zeros(request, sizeof *req);
6915 req->port_no = ofputil_port_to_ofp11(port);
6926 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
6927 struct ofp10_port_stats *ps10)
6929 ps10->port_no = htons(ofp_to_u16(ops->port_no));
6930 memset(ps10->pad, 0, sizeof ps10->pad);
6931 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
6932 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
6933 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
6934 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
6935 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
6936 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
6937 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
6938 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
6939 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
6940 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
6941 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
6942 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
6946 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
6947 struct ofp11_port_stats *ps11)
6949 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
6950 memset(ps11->pad, 0, sizeof ps11->pad);
6951 ps11->rx_packets = htonll(ops->stats.rx_packets);
6952 ps11->tx_packets = htonll(ops->stats.tx_packets);
6953 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
6954 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
6955 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
6956 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
6957 ps11->rx_errors = htonll(ops->stats.rx_errors);
6958 ps11->tx_errors = htonll(ops->stats.tx_errors);
6959 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
6960 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
6961 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
6962 ps11->collisions = htonll(ops->stats.collisions);
6966 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
6967 struct ofp13_port_stats *ps13)
6969 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
6970 ps13->duration_sec = htonl(ops->duration_sec);
6971 ps13->duration_nsec = htonl(ops->duration_nsec);
6975 ofputil_append_ofp14_port_stats(const struct ofputil_port_stats *ops,
6976 struct ovs_list *replies)
6978 struct ofp14_port_stats_prop_ethernet *eth;
6979 struct ofp14_port_stats *ps14;
6980 struct ofpbuf *reply;
6982 reply = ofpmp_reserve(replies, sizeof *ps14 + sizeof *eth);
6984 ps14 = ofpbuf_put_uninit(reply, sizeof *ps14);
6985 ps14->length = htons(sizeof *ps14 + sizeof *eth);
6986 memset(ps14->pad, 0, sizeof ps14->pad);
6987 ps14->port_no = ofputil_port_to_ofp11(ops->port_no);
6988 ps14->duration_sec = htonl(ops->duration_sec);
6989 ps14->duration_nsec = htonl(ops->duration_nsec);
6990 ps14->rx_packets = htonll(ops->stats.rx_packets);
6991 ps14->tx_packets = htonll(ops->stats.tx_packets);
6992 ps14->rx_bytes = htonll(ops->stats.rx_bytes);
6993 ps14->tx_bytes = htonll(ops->stats.tx_bytes);
6994 ps14->rx_dropped = htonll(ops->stats.rx_dropped);
6995 ps14->tx_dropped = htonll(ops->stats.tx_dropped);
6996 ps14->rx_errors = htonll(ops->stats.rx_errors);
6997 ps14->tx_errors = htonll(ops->stats.tx_errors);
6999 eth = ofpprop_put_zeros(reply, OFPPSPT14_ETHERNET, sizeof *eth);
7000 eth->rx_frame_err = htonll(ops->stats.rx_frame_errors);
7001 eth->rx_over_err = htonll(ops->stats.rx_over_errors);
7002 eth->rx_crc_err = htonll(ops->stats.rx_crc_errors);
7003 eth->collisions = htonll(ops->stats.collisions);
7006 /* Encode a ports stat for 'ops' and append it to 'replies'. */
7008 ofputil_append_port_stat(struct ovs_list *replies,
7009 const struct ofputil_port_stats *ops)
7011 switch (ofpmp_version(replies)) {
7012 case OFP13_VERSION: {
7013 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7014 ofputil_port_stats_to_ofp13(ops, reply);
7018 case OFP11_VERSION: {
7019 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7020 ofputil_port_stats_to_ofp11(ops, reply);
7024 case OFP10_VERSION: {
7025 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
7026 ofputil_port_stats_to_ofp10(ops, reply);
7032 ofputil_append_ofp14_port_stats(ops, replies);
7041 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
7042 const struct ofp10_port_stats *ps10)
7044 memset(ops, 0, sizeof *ops);
7046 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
7047 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
7048 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
7049 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
7050 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
7051 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
7052 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
7053 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
7054 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
7055 ops->stats.rx_frame_errors =
7056 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
7057 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
7058 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
7059 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
7060 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7066 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
7067 const struct ofp11_port_stats *ps11)
7071 memset(ops, 0, sizeof *ops);
7072 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
7077 ops->stats.rx_packets = ntohll(ps11->rx_packets);
7078 ops->stats.tx_packets = ntohll(ps11->tx_packets);
7079 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
7080 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
7081 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
7082 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
7083 ops->stats.rx_errors = ntohll(ps11->rx_errors);
7084 ops->stats.tx_errors = ntohll(ps11->tx_errors);
7085 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
7086 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
7087 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
7088 ops->stats.collisions = ntohll(ps11->collisions);
7089 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
7095 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
7096 const struct ofp13_port_stats *ps13)
7098 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
7100 ops->duration_sec = ntohl(ps13->duration_sec);
7101 ops->duration_nsec = ntohl(ps13->duration_nsec);
7107 parse_ofp14_port_stats_ethernet_property(const struct ofpbuf *payload,
7108 struct ofputil_port_stats *ops)
7110 const struct ofp14_port_stats_prop_ethernet *eth = payload->data;
7112 if (payload->size != sizeof *eth) {
7113 return OFPERR_OFPBPC_BAD_LEN;
7116 ops->stats.rx_frame_errors = ntohll(eth->rx_frame_err);
7117 ops->stats.rx_over_errors = ntohll(eth->rx_over_err);
7118 ops->stats.rx_crc_errors = ntohll(eth->rx_crc_err);
7119 ops->stats.collisions = ntohll(eth->collisions);
7125 ofputil_pull_ofp14_port_stats(struct ofputil_port_stats *ops,
7128 const struct ofp14_port_stats *ps14 = ofpbuf_try_pull(msg, sizeof *ps14);
7130 return OFPERR_OFPBRC_BAD_LEN;
7133 size_t len = ntohs(ps14->length);
7134 if (len < sizeof *ps14 || len - sizeof *ps14 > msg->size) {
7135 return OFPERR_OFPBRC_BAD_LEN;
7137 len -= sizeof *ps14;
7139 enum ofperr error = ofputil_port_from_ofp11(ps14->port_no, &ops->port_no);
7144 ops->duration_sec = ntohl(ps14->duration_sec);
7145 ops->duration_nsec = ntohl(ps14->duration_nsec);
7146 ops->stats.rx_packets = ntohll(ps14->rx_packets);
7147 ops->stats.tx_packets = ntohll(ps14->tx_packets);
7148 ops->stats.rx_bytes = ntohll(ps14->rx_bytes);
7149 ops->stats.tx_bytes = ntohll(ps14->tx_bytes);
7150 ops->stats.rx_dropped = ntohll(ps14->rx_dropped);
7151 ops->stats.tx_dropped = ntohll(ps14->tx_dropped);
7152 ops->stats.rx_errors = ntohll(ps14->rx_errors);
7153 ops->stats.tx_errors = ntohll(ps14->tx_errors);
7154 ops->stats.rx_frame_errors = UINT64_MAX;
7155 ops->stats.rx_over_errors = UINT64_MAX;
7156 ops->stats.rx_crc_errors = UINT64_MAX;
7157 ops->stats.collisions = UINT64_MAX;
7159 struct ofpbuf properties = ofpbuf_const_initializer(ofpbuf_pull(msg, len),
7161 while (properties.size > 0) {
7162 struct ofpbuf payload;
7166 error = ofpprop_pull(&properties, &payload, &type);
7172 case OFPPSPT14_ETHERNET:
7173 error = parse_ofp14_port_stats_ethernet_property(&payload, ops);
7177 error = OFPPROP_UNKNOWN(true, "port stats", type);
7189 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
7192 ofputil_count_port_stats(const struct ofp_header *oh)
7194 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
7195 ofpraw_pull_assert(&b);
7197 for (size_t n = 0; ; n++) {
7198 struct ofputil_port_stats ps;
7199 if (ofputil_decode_port_stats(&ps, &b)) {
7205 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
7206 * ofputil_port_stats in 'ps'.
7208 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
7209 * message. Calling this function multiple times for a single 'msg' iterates
7210 * through the replies. The caller must initially leave 'msg''s layer pointers
7211 * null and not modify them between calls.
7213 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7214 * otherwise a positive errno value. */
7216 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
7221 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7222 : ofpraw_pull(&raw, msg));
7229 } else if (raw == OFPRAW_OFPST14_PORT_REPLY) {
7230 return ofputil_pull_ofp14_port_stats(ps, msg);
7231 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
7232 const struct ofp13_port_stats *ps13;
7234 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
7238 return ofputil_port_stats_from_ofp13(ps, ps13);
7239 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
7240 const struct ofp11_port_stats *ps11;
7242 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
7246 return ofputil_port_stats_from_ofp11(ps, ps11);
7247 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
7248 const struct ofp10_port_stats *ps10;
7250 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
7254 return ofputil_port_stats_from_ofp10(ps, ps10);
7260 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %"PRIu32" leftover "
7261 "bytes at end", msg->size);
7262 return OFPERR_OFPBRC_BAD_LEN;
7265 /* Parse a port status request message into a 16 bit OpenFlow 1.0
7266 * port number and stores the latter in '*ofp10_port'.
7267 * Returns 0 if successful, otherwise an OFPERR_* number. */
7269 ofputil_decode_port_stats_request(const struct ofp_header *request,
7270 ofp_port_t *ofp10_port)
7272 switch ((enum ofp_version)request->version) {
7277 case OFP11_VERSION: {
7278 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
7279 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
7282 case OFP10_VERSION: {
7283 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
7284 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
7293 /* Frees all of the "struct ofputil_bucket"s in the 'buckets' list. */
7295 ofputil_bucket_list_destroy(struct ovs_list *buckets)
7297 struct ofputil_bucket *bucket;
7299 LIST_FOR_EACH_POP (bucket, list_node, buckets) {
7300 free(bucket->ofpacts);
7305 /* Clones 'bucket' and its ofpacts data */
7306 static struct ofputil_bucket *
7307 ofputil_bucket_clone_data(const struct ofputil_bucket *bucket)
7309 struct ofputil_bucket *new;
7311 new = xmemdup(bucket, sizeof *bucket);
7312 new->ofpacts = xmemdup(bucket->ofpacts, bucket->ofpacts_len);
7317 /* Clones each of the buckets in the list 'src' appending them
7318 * in turn to 'dest' which should be an initialised list.
7319 * An exception is that if the pointer value of a bucket in 'src'
7320 * matches 'skip' then it is not cloned or appended to 'dest'.
7321 * This allows all of 'src' or 'all of 'src' except 'skip' to
7322 * be cloned and appended to 'dest'. */
7324 ofputil_bucket_clone_list(struct ovs_list *dest, const struct ovs_list *src,
7325 const struct ofputil_bucket *skip)
7327 struct ofputil_bucket *bucket;
7329 LIST_FOR_EACH (bucket, list_node, src) {
7330 struct ofputil_bucket *new_bucket;
7332 if (bucket == skip) {
7336 new_bucket = ofputil_bucket_clone_data(bucket);
7337 list_push_back(dest, &new_bucket->list_node);
7341 /* Find a bucket in the list 'buckets' whose bucket id is 'bucket_id'
7342 * Returns the first bucket found or NULL if no buckets are found. */
7343 struct ofputil_bucket *
7344 ofputil_bucket_find(const struct ovs_list *buckets, uint32_t bucket_id)
7346 struct ofputil_bucket *bucket;
7348 if (bucket_id > OFPG15_BUCKET_MAX) {
7352 LIST_FOR_EACH (bucket, list_node, buckets) {
7353 if (bucket->bucket_id == bucket_id) {
7361 /* Returns true if more than one bucket in the list 'buckets'
7362 * have the same bucket id. Returns false otherwise. */
7364 ofputil_bucket_check_duplicate_id(const struct ovs_list *buckets)
7366 struct ofputil_bucket *i, *j;
7368 LIST_FOR_EACH (i, list_node, buckets) {
7369 LIST_FOR_EACH_REVERSE (j, list_node, buckets) {
7373 if (i->bucket_id == j->bucket_id) {
7382 /* Returns the bucket at the front of the list 'buckets'.
7383 * Undefined if 'buckets is empty. */
7384 struct ofputil_bucket *
7385 ofputil_bucket_list_front(const struct ovs_list *buckets)
7387 static struct ofputil_bucket *bucket;
7389 ASSIGN_CONTAINER(bucket, list_front(buckets), list_node);
7394 /* Returns the bucket at the back of the list 'buckets'.
7395 * Undefined if 'buckets is empty. */
7396 struct ofputil_bucket *
7397 ofputil_bucket_list_back(const struct ovs_list *buckets)
7399 static struct ofputil_bucket *bucket;
7401 ASSIGN_CONTAINER(bucket, list_back(buckets), list_node);
7406 /* Returns an OpenFlow group stats request for OpenFlow version 'ofp_version',
7407 * that requests stats for group 'group_id'. (Use OFPG_ALL to request stats
7410 * Group statistics include packet and byte counts for each group. */
7412 ofputil_encode_group_stats_request(enum ofp_version ofp_version,
7415 struct ofpbuf *request;
7417 switch (ofp_version) {
7419 ovs_fatal(0, "dump-group-stats needs OpenFlow 1.1 or later "
7420 "(\'-O OpenFlow11\')");
7425 case OFP15_VERSION: {
7426 struct ofp11_group_stats_request *req;
7427 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_REQUEST, ofp_version, 0);
7428 req = ofpbuf_put_zeros(request, sizeof *req);
7429 req->group_id = htonl(group_id);
7440 ofputil_uninit_group_desc(struct ofputil_group_desc *gd)
7442 ofputil_bucket_list_destroy(&gd->buckets);
7443 free(&gd->props.fields);
7446 /* Decodes the OpenFlow group description request in 'oh', returning the group
7447 * whose description is requested, or OFPG_ALL if stats for all groups was
7450 ofputil_decode_group_desc_request(const struct ofp_header *oh)
7452 struct ofpbuf request = ofpbuf_const_initializer(oh, ntohs(oh->length));
7453 enum ofpraw raw = ofpraw_pull_assert(&request);
7454 if (raw == OFPRAW_OFPST11_GROUP_DESC_REQUEST) {
7456 } else if (raw == OFPRAW_OFPST15_GROUP_DESC_REQUEST) {
7457 ovs_be32 *group_id = ofpbuf_pull(&request, sizeof *group_id);
7458 return ntohl(*group_id);
7464 /* Returns an OpenFlow group description request for OpenFlow version
7465 * 'ofp_version', that requests stats for group 'group_id'. Use OFPG_ALL to
7466 * request stats for all groups (OpenFlow 1.4 and earlier always request all
7469 * Group descriptions include the bucket and action configuration for each
7472 ofputil_encode_group_desc_request(enum ofp_version ofp_version,
7475 struct ofpbuf *request;
7477 switch (ofp_version) {
7479 ovs_fatal(0, "dump-groups needs OpenFlow 1.1 or later "
7480 "(\'-O OpenFlow11\')");
7485 request = ofpraw_alloc(OFPRAW_OFPST11_GROUP_DESC_REQUEST,
7488 case OFP15_VERSION:{
7489 struct ofp15_group_desc_request *req;
7490 request = ofpraw_alloc(OFPRAW_OFPST15_GROUP_DESC_REQUEST,
7492 req = ofpbuf_put_zeros(request, sizeof *req);
7493 req->group_id = htonl(group_id);
7504 ofputil_group_bucket_counters_to_ofp11(const struct ofputil_group_stats *gs,
7505 struct ofp11_bucket_counter bucket_cnts[])
7509 for (i = 0; i < gs->n_buckets; i++) {
7510 bucket_cnts[i].packet_count = htonll(gs->bucket_stats[i].packet_count);
7511 bucket_cnts[i].byte_count = htonll(gs->bucket_stats[i].byte_count);
7516 ofputil_group_stats_to_ofp11(const struct ofputil_group_stats *gs,
7517 struct ofp11_group_stats *gs11, size_t length,
7518 struct ofp11_bucket_counter bucket_cnts[])
7520 memset(gs11, 0, sizeof *gs11);
7521 gs11->length = htons(length);
7522 gs11->group_id = htonl(gs->group_id);
7523 gs11->ref_count = htonl(gs->ref_count);
7524 gs11->packet_count = htonll(gs->packet_count);
7525 gs11->byte_count = htonll(gs->byte_count);
7526 ofputil_group_bucket_counters_to_ofp11(gs, bucket_cnts);
7530 ofputil_group_stats_to_ofp13(const struct ofputil_group_stats *gs,
7531 struct ofp13_group_stats *gs13, size_t length,
7532 struct ofp11_bucket_counter bucket_cnts[])
7534 ofputil_group_stats_to_ofp11(gs, &gs13->gs, length, bucket_cnts);
7535 gs13->duration_sec = htonl(gs->duration_sec);
7536 gs13->duration_nsec = htonl(gs->duration_nsec);
7540 /* Encodes 'gs' properly for the format of the list of group statistics
7541 * replies already begun in 'replies' and appends it to the list. 'replies'
7542 * must have originally been initialized with ofpmp_init(). */
7544 ofputil_append_group_stats(struct ovs_list *replies,
7545 const struct ofputil_group_stats *gs)
7547 size_t bucket_counter_size;
7548 struct ofp11_bucket_counter *bucket_counters;
7551 bucket_counter_size = gs->n_buckets * sizeof(struct ofp11_bucket_counter);
7553 switch (ofpmp_version(replies)) {
7555 case OFP12_VERSION:{
7556 struct ofp11_group_stats *gs11;
7558 length = sizeof *gs11 + bucket_counter_size;
7559 gs11 = ofpmp_append(replies, length);
7560 bucket_counters = (struct ofp11_bucket_counter *)(gs11 + 1);
7561 ofputil_group_stats_to_ofp11(gs, gs11, length, bucket_counters);
7567 case OFP15_VERSION: {
7568 struct ofp13_group_stats *gs13;
7570 length = sizeof *gs13 + bucket_counter_size;
7571 gs13 = ofpmp_append(replies, length);
7572 bucket_counters = (struct ofp11_bucket_counter *)(gs13 + 1);
7573 ofputil_group_stats_to_ofp13(gs, gs13, length, bucket_counters);
7582 /* Returns an OpenFlow group features request for OpenFlow version
7585 ofputil_encode_group_features_request(enum ofp_version ofp_version)
7587 struct ofpbuf *request = NULL;
7589 switch (ofp_version) {
7592 ovs_fatal(0, "dump-group-features needs OpenFlow 1.2 or later "
7593 "(\'-O OpenFlow12\')");
7598 request = ofpraw_alloc(OFPRAW_OFPST12_GROUP_FEATURES_REQUEST,
7608 /* Returns a OpenFlow message that encodes 'features' properly as a reply to
7609 * group features request 'request'. */
7611 ofputil_encode_group_features_reply(
7612 const struct ofputil_group_features *features,
7613 const struct ofp_header *request)
7615 struct ofp12_group_features_stats *ogf;
7616 struct ofpbuf *reply;
7619 reply = ofpraw_alloc_xid(OFPRAW_OFPST12_GROUP_FEATURES_REPLY,
7620 request->version, request->xid, 0);
7621 ogf = ofpbuf_put_zeros(reply, sizeof *ogf);
7622 ogf->types = htonl(features->types);
7623 ogf->capabilities = htonl(features->capabilities);
7624 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7625 ogf->max_groups[i] = htonl(features->max_groups[i]);
7626 ogf->actions[i] = ofpact_bitmap_to_openflow(features->ofpacts[i],
7633 /* Decodes group features reply 'oh' into 'features'. */
7635 ofputil_decode_group_features_reply(const struct ofp_header *oh,
7636 struct ofputil_group_features *features)
7638 const struct ofp12_group_features_stats *ogf = ofpmsg_body(oh);
7641 features->types = ntohl(ogf->types);
7642 features->capabilities = ntohl(ogf->capabilities);
7643 for (i = 0; i < OFPGT12_N_TYPES; i++) {
7644 features->max_groups[i] = ntohl(ogf->max_groups[i]);
7645 features->ofpacts[i] = ofpact_bitmap_from_openflow(
7646 ogf->actions[i], oh->version);
7650 /* Parse a group status request message into a 32 bit OpenFlow 1.1
7651 * group ID and stores the latter in '*group_id'.
7652 * Returns 0 if successful, otherwise an OFPERR_* number. */
7654 ofputil_decode_group_stats_request(const struct ofp_header *request,
7657 const struct ofp11_group_stats_request *gsr11 = ofpmsg_body(request);
7658 *group_id = ntohl(gsr11->group_id);
7662 /* Converts a group stats reply in 'msg' into an abstract ofputil_group_stats
7663 * in 'gs'. Assigns freshly allocated memory to gs->bucket_stats for the
7664 * caller to eventually free.
7666 * Multiple group stats replies can be packed into a single OpenFlow message.
7667 * Calling this function multiple times for a single 'msg' iterates through the
7668 * replies. The caller must initially leave 'msg''s layer pointers null and
7669 * not modify them between calls.
7671 * Returns 0 if successful, EOF if no replies were left in this 'msg',
7672 * otherwise a positive errno value. */
7674 ofputil_decode_group_stats_reply(struct ofpbuf *msg,
7675 struct ofputil_group_stats *gs)
7677 struct ofp11_bucket_counter *obc;
7678 struct ofp11_group_stats *ogs11;
7685 gs->bucket_stats = NULL;
7686 error = (msg->header ? ofpraw_decode(&raw, msg->header)
7687 : ofpraw_pull(&raw, msg));
7696 if (raw == OFPRAW_OFPST11_GROUP_REPLY) {
7697 base_len = sizeof *ogs11;
7698 ogs11 = ofpbuf_try_pull(msg, sizeof *ogs11);
7699 gs->duration_sec = gs->duration_nsec = UINT32_MAX;
7700 } else if (raw == OFPRAW_OFPST13_GROUP_REPLY) {
7701 struct ofp13_group_stats *ogs13;
7703 base_len = sizeof *ogs13;
7704 ogs13 = ofpbuf_try_pull(msg, sizeof *ogs13);
7707 gs->duration_sec = ntohl(ogs13->duration_sec);
7708 gs->duration_nsec = ntohl(ogs13->duration_nsec);
7717 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7718 ofpraw_get_name(raw), msg->size);
7719 return OFPERR_OFPBRC_BAD_LEN;
7721 length = ntohs(ogs11->length);
7722 if (length < sizeof base_len) {
7723 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply claims invalid length %"PRIuSIZE,
7724 ofpraw_get_name(raw), length);
7725 return OFPERR_OFPBRC_BAD_LEN;
7728 gs->group_id = ntohl(ogs11->group_id);
7729 gs->ref_count = ntohl(ogs11->ref_count);
7730 gs->packet_count = ntohll(ogs11->packet_count);
7731 gs->byte_count = ntohll(ogs11->byte_count);
7733 gs->n_buckets = (length - base_len) / sizeof *obc;
7734 obc = ofpbuf_try_pull(msg, gs->n_buckets * sizeof *obc);
7736 VLOG_WARN_RL(&bad_ofmsg_rl, "%s reply has %"PRIu32" leftover bytes at end",
7737 ofpraw_get_name(raw), msg->size);
7738 return OFPERR_OFPBRC_BAD_LEN;
7741 gs->bucket_stats = xmalloc(gs->n_buckets * sizeof *gs->bucket_stats);
7742 for (i = 0; i < gs->n_buckets; i++) {
7743 gs->bucket_stats[i].packet_count = ntohll(obc[i].packet_count);
7744 gs->bucket_stats[i].byte_count = ntohll(obc[i].byte_count);
7751 ofputil_put_ofp11_bucket(const struct ofputil_bucket *bucket,
7752 struct ofpbuf *openflow, enum ofp_version ofp_version)
7754 struct ofp11_bucket *ob;
7757 start = openflow->size;
7758 ofpbuf_put_zeros(openflow, sizeof *ob);
7759 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7760 openflow, ofp_version);
7761 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7762 ob->len = htons(openflow->size - start);
7763 ob->weight = htons(bucket->weight);
7764 ob->watch_port = ofputil_port_to_ofp11(bucket->watch_port);
7765 ob->watch_group = htonl(bucket->watch_group);
7769 ofputil_put_ofp15_bucket(const struct ofputil_bucket *bucket,
7770 uint32_t bucket_id, enum ofp11_group_type group_type,
7771 struct ofpbuf *openflow, enum ofp_version ofp_version)
7773 struct ofp15_bucket *ob;
7774 size_t start, actions_start, actions_len;
7776 start = openflow->size;
7777 ofpbuf_put_zeros(openflow, sizeof *ob);
7779 actions_start = openflow->size;
7780 ofpacts_put_openflow_actions(bucket->ofpacts, bucket->ofpacts_len,
7781 openflow, ofp_version);
7782 actions_len = openflow->size - actions_start;
7784 if (group_type == OFPGT11_SELECT) {
7785 ofpprop_put_u16(openflow, OFPGBPT15_WEIGHT, bucket->weight);
7787 if (bucket->watch_port != OFPP_ANY) {
7788 ofpprop_put_be32(openflow, OFPGBPT15_WATCH_PORT,
7789 ofputil_port_to_ofp11(bucket->watch_port));
7791 if (bucket->watch_group != OFPG_ANY) {
7792 ofpprop_put_u32(openflow, OFPGBPT15_WATCH_GROUP, bucket->watch_group);
7795 ob = ofpbuf_at_assert(openflow, start, sizeof *ob);
7796 ob->len = htons(openflow->size - start);
7797 ob->action_array_len = htons(actions_len);
7798 ob->bucket_id = htonl(bucket_id);
7802 ofputil_put_group_prop_ntr_selection_method(enum ofp_version ofp_version,
7803 const struct ofputil_group_props *gp,
7804 struct ofpbuf *openflow)
7806 struct ntr_group_prop_selection_method *prop;
7809 start = openflow->size;
7810 ofpbuf_put_zeros(openflow, sizeof *prop);
7811 oxm_put_field_array(openflow, &gp->fields, ofp_version);
7812 prop = ofpbuf_at_assert(openflow, start, sizeof *prop);
7813 prop->type = htons(OFPGPT15_EXPERIMENTER);
7814 prop->experimenter = htonl(NTR_VENDOR_ID);
7815 prop->exp_type = htonl(NTRT_SELECTION_METHOD);
7816 strcpy(prop->selection_method, gp->selection_method);
7817 prop->selection_method_param = htonll(gp->selection_method_param);
7818 ofpprop_end(openflow, start);
7822 ofputil_append_ofp11_group_desc_reply(const struct ofputil_group_desc *gds,
7823 const struct ovs_list *buckets,
7824 struct ovs_list *replies,
7825 enum ofp_version version)
7827 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7828 struct ofp11_group_desc_stats *ogds;
7829 struct ofputil_bucket *bucket;
7832 start_ogds = reply->size;
7833 ofpbuf_put_zeros(reply, sizeof *ogds);
7834 LIST_FOR_EACH (bucket, list_node, buckets) {
7835 ofputil_put_ofp11_bucket(bucket, reply, version);
7837 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7838 ogds->length = htons(reply->size - start_ogds);
7839 ogds->type = gds->type;
7840 ogds->group_id = htonl(gds->group_id);
7842 ofpmp_postappend(replies, start_ogds);
7846 ofputil_append_ofp15_group_desc_reply(const struct ofputil_group_desc *gds,
7847 const struct ovs_list *buckets,
7848 struct ovs_list *replies,
7849 enum ofp_version version)
7851 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
7852 struct ofp15_group_desc_stats *ogds;
7853 struct ofputil_bucket *bucket;
7854 size_t start_ogds, start_buckets;
7856 start_ogds = reply->size;
7857 ofpbuf_put_zeros(reply, sizeof *ogds);
7858 start_buckets = reply->size;
7859 LIST_FOR_EACH (bucket, list_node, buckets) {
7860 ofputil_put_ofp15_bucket(bucket, bucket->bucket_id,
7861 gds->type, reply, version);
7863 ogds = ofpbuf_at_assert(reply, start_ogds, sizeof *ogds);
7864 ogds->type = gds->type;
7865 ogds->group_id = htonl(gds->group_id);
7866 ogds->bucket_list_len = htons(reply->size - start_buckets);
7868 /* Add group properties */
7869 if (gds->props.selection_method[0]) {
7870 ofputil_put_group_prop_ntr_selection_method(version, &gds->props,
7873 ogds->length = htons(reply->size - start_ogds);
7875 ofpmp_postappend(replies, start_ogds);
7878 /* Appends a group stats reply that contains the data in 'gds' to those already
7879 * present in the list of ofpbufs in 'replies'. 'replies' should have been
7880 * initialized with ofpmp_init(). */
7882 ofputil_append_group_desc_reply(const struct ofputil_group_desc *gds,
7883 const struct ovs_list *buckets,
7884 struct ovs_list *replies)
7886 enum ofp_version version = ofpmp_version(replies);
7894 ofputil_append_ofp11_group_desc_reply(gds, buckets, replies, version);
7898 ofputil_append_ofp15_group_desc_reply(gds, buckets, replies, version);
7908 ofputil_pull_ofp11_buckets(struct ofpbuf *msg, size_t buckets_length,
7909 enum ofp_version version, struct ovs_list *buckets)
7911 struct ofp11_bucket *ob;
7912 uint32_t bucket_id = 0;
7915 while (buckets_length > 0) {
7916 struct ofputil_bucket *bucket;
7917 struct ofpbuf ofpacts;
7921 ob = (buckets_length >= sizeof *ob
7922 ? ofpbuf_try_pull(msg, sizeof *ob)
7925 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE" leftover bytes",
7927 return OFPERR_OFPGMFC_BAD_BUCKET;
7930 ob_len = ntohs(ob->len);
7931 if (ob_len < sizeof *ob) {
7932 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7933 "%"PRIuSIZE" is not valid", ob_len);
7934 return OFPERR_OFPGMFC_BAD_BUCKET;
7935 } else if (ob_len > buckets_length) {
7936 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
7937 "%"PRIuSIZE" exceeds remaining buckets data size %"PRIuSIZE,
7938 ob_len, buckets_length);
7939 return OFPERR_OFPGMFC_BAD_BUCKET;
7941 buckets_length -= ob_len;
7943 ofpbuf_init(&ofpacts, 0);
7944 error = ofpacts_pull_openflow_actions(msg, ob_len - sizeof *ob,
7947 ofpbuf_uninit(&ofpacts);
7948 ofputil_bucket_list_destroy(buckets);
7952 bucket = xzalloc(sizeof *bucket);
7953 bucket->weight = ntohs(ob->weight);
7954 error = ofputil_port_from_ofp11(ob->watch_port, &bucket->watch_port);
7956 ofpbuf_uninit(&ofpacts);
7957 ofputil_bucket_list_destroy(buckets);
7958 return OFPERR_OFPGMFC_BAD_WATCH;
7960 bucket->watch_group = ntohl(ob->watch_group);
7961 bucket->bucket_id = bucket_id++;
7963 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
7964 bucket->ofpacts_len = ofpacts.size;
7965 list_push_back(buckets, &bucket->list_node);
7972 ofputil_pull_ofp15_buckets(struct ofpbuf *msg, size_t buckets_length,
7973 enum ofp_version version, uint8_t group_type,
7974 struct ovs_list *buckets)
7976 struct ofp15_bucket *ob;
7979 while (buckets_length > 0) {
7980 struct ofputil_bucket *bucket = NULL;
7981 struct ofpbuf ofpacts;
7982 enum ofperr err = OFPERR_OFPGMFC_BAD_BUCKET;
7983 size_t ob_len, actions_len, properties_len;
7984 ovs_be32 watch_port = ofputil_port_to_ofp11(OFPP_ANY);
7985 ovs_be32 watch_group = htonl(OFPG_ANY);
7986 ovs_be16 weight = htons(group_type == OFPGT11_SELECT ? 1 : 0);
7988 ofpbuf_init(&ofpacts, 0);
7990 ob = ofpbuf_try_pull(msg, sizeof *ob);
7992 VLOG_WARN_RL(&bad_ofmsg_rl, "buckets end with %"PRIuSIZE
7993 " leftover bytes", buckets_length);
7997 ob_len = ntohs(ob->len);
7998 actions_len = ntohs(ob->action_array_len);
8000 if (ob_len < sizeof *ob) {
8001 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8002 "%"PRIuSIZE" is not valid", ob_len);
8004 } else if (ob_len > buckets_length) {
8005 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket length "
8006 "%"PRIuSIZE" exceeds remaining buckets data size %"
8007 PRIuSIZE, ob_len, buckets_length);
8009 } else if (actions_len > ob_len - sizeof *ob) {
8010 VLOG_WARN_RL(&bad_ofmsg_rl, "OpenFlow message bucket actions "
8011 "length %"PRIuSIZE" exceeds remaining bucket "
8012 "data size %"PRIuSIZE, actions_len,
8013 ob_len - sizeof *ob);
8016 buckets_length -= ob_len;
8018 err = ofpacts_pull_openflow_actions(msg, actions_len, version,
8024 properties_len = ob_len - sizeof *ob - actions_len;
8025 struct ofpbuf properties = ofpbuf_const_initializer(
8026 ofpbuf_pull(msg, properties_len), properties_len);
8027 while (properties.size > 0) {
8028 struct ofpbuf payload;
8031 err = ofpprop_pull(&properties, &payload, &type);
8037 case OFPGBPT15_WEIGHT:
8038 err = ofpprop_parse_be16(&payload, &weight);
8041 case OFPGBPT15_WATCH_PORT:
8042 err = ofpprop_parse_be32(&payload, &watch_port);
8045 case OFPGBPT15_WATCH_GROUP:
8046 err = ofpprop_parse_be32(&payload, &watch_group);
8050 err = OFPPROP_UNKNOWN(false, "group bucket", type);
8059 bucket = xzalloc(sizeof *bucket);
8061 bucket->weight = ntohs(weight);
8062 err = ofputil_port_from_ofp11(watch_port, &bucket->watch_port);
8064 err = OFPERR_OFPGMFC_BAD_WATCH;
8067 bucket->watch_group = ntohl(watch_group);
8068 bucket->bucket_id = ntohl(ob->bucket_id);
8069 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8070 VLOG_WARN_RL(&bad_ofmsg_rl, "bucket id (%u) is out of range",
8072 err = OFPERR_OFPGMFC_BAD_BUCKET;
8076 bucket->ofpacts = ofpbuf_steal_data(&ofpacts);
8077 bucket->ofpacts_len = ofpacts.size;
8078 list_push_back(buckets, &bucket->list_node);
8084 ofpbuf_uninit(&ofpacts);
8085 ofputil_bucket_list_destroy(buckets);
8089 if (ofputil_bucket_check_duplicate_id(buckets)) {
8090 VLOG_WARN_RL(&bad_ofmsg_rl, "Duplicate bucket id");
8091 ofputil_bucket_list_destroy(buckets);
8092 return OFPERR_OFPGMFC_BAD_BUCKET;
8099 ofputil_init_group_properties(struct ofputil_group_props *gp)
8101 memset(gp, 0, sizeof *gp);
8105 parse_group_prop_ntr_selection_method(struct ofpbuf *payload,
8106 enum ofp11_group_type group_type,
8107 enum ofp15_group_mod_command group_cmd,
8108 struct ofputil_group_props *gp)
8110 struct ntr_group_prop_selection_method *prop = payload->data;
8111 size_t fields_len, method_len;
8114 switch (group_type) {
8115 case OFPGT11_SELECT:
8118 case OFPGT11_INDIRECT:
8120 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
8121 "only allowed for select groups");
8122 return OFPERR_OFPBPC_BAD_VALUE;
8127 switch (group_cmd) {
8129 case OFPGC15_MODIFY:
8131 case OFPGC15_DELETE:
8132 case OFPGC15_INSERT_BUCKET:
8133 case OFPGC15_REMOVE_BUCKET:
8134 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property is "
8135 "only allowed for add and delete group modifications");
8136 return OFPERR_OFPBPC_BAD_VALUE;
8141 if (payload->size < sizeof *prop) {
8142 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method property "
8143 "length %u is not valid", payload->size);
8144 return OFPERR_OFPBPC_BAD_LEN;
8147 method_len = strnlen(prop->selection_method, NTR_MAX_SELECTION_METHOD_LEN);
8149 if (method_len == NTR_MAX_SELECTION_METHOD_LEN) {
8150 OFPPROP_LOG(&bad_ofmsg_rl, false,
8151 "ntr selection method is not null terminated");
8152 return OFPERR_OFPBPC_BAD_VALUE;
8155 if (strcmp("hash", prop->selection_method)) {
8156 OFPPROP_LOG(&bad_ofmsg_rl, false,
8157 "ntr selection method '%s' is not supported",
8158 prop->selection_method);
8159 return OFPERR_OFPBPC_BAD_VALUE;
8162 strcpy(gp->selection_method, prop->selection_method);
8163 gp->selection_method_param = ntohll(prop->selection_method_param);
8165 if (!method_len && gp->selection_method_param) {
8166 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
8167 "non-zero but selection method is empty");
8168 return OFPERR_OFPBPC_BAD_VALUE;
8171 ofpbuf_pull(payload, sizeof *prop);
8173 fields_len = ntohs(prop->length) - sizeof *prop;
8174 if (!method_len && fields_len) {
8175 OFPPROP_LOG(&bad_ofmsg_rl, false, "ntr selection method parameter is "
8176 "zero but fields are provided");
8177 return OFPERR_OFPBPC_BAD_VALUE;
8180 error = oxm_pull_field_array(payload->data, fields_len,
8183 OFPPROP_LOG(&bad_ofmsg_rl, false,
8184 "ntr selection method fields are invalid");
8192 parse_ofp15_group_properties(struct ofpbuf *msg,
8193 enum ofp11_group_type group_type,
8194 enum ofp15_group_mod_command group_cmd,
8195 struct ofputil_group_props *gp,
8196 size_t properties_len)
8198 struct ofpbuf properties = ofpbuf_const_initializer(
8199 ofpbuf_pull(msg, properties_len), properties_len);
8200 while (properties.size > 0) {
8201 struct ofpbuf payload;
8205 error = ofpprop_pull(&properties, &payload, &type);
8211 case OFPPROP_EXP(NTR_VENDOR_ID, NTRT_SELECTION_METHOD):
8212 case OFPPROP_EXP(NTR_COMPAT_VENDOR_ID, NTRT_SELECTION_METHOD):
8213 error = parse_group_prop_ntr_selection_method(&payload, group_type,
8218 error = OFPPROP_UNKNOWN(false, "group", type);
8231 ofputil_decode_ofp11_group_desc_reply(struct ofputil_group_desc *gd,
8233 enum ofp_version version)
8235 struct ofp11_group_desc_stats *ogds;
8239 ofpraw_pull_assert(msg);
8246 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8248 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8249 "leftover bytes at end", msg->size);
8250 return OFPERR_OFPBRC_BAD_LEN;
8252 gd->type = ogds->type;
8253 gd->group_id = ntohl(ogds->group_id);
8255 length = ntohs(ogds->length);
8256 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8257 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8258 "length %"PRIuSIZE, length);
8259 return OFPERR_OFPBRC_BAD_LEN;
8262 return ofputil_pull_ofp11_buckets(msg, length - sizeof *ogds, version,
8267 ofputil_decode_ofp15_group_desc_reply(struct ofputil_group_desc *gd,
8269 enum ofp_version version)
8271 struct ofp15_group_desc_stats *ogds;
8272 uint16_t length, bucket_list_len;
8276 ofpraw_pull_assert(msg);
8283 ogds = ofpbuf_try_pull(msg, sizeof *ogds);
8285 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply has %"PRIu32" "
8286 "leftover bytes at end", msg->size);
8287 return OFPERR_OFPBRC_BAD_LEN;
8289 gd->type = ogds->type;
8290 gd->group_id = ntohl(ogds->group_id);
8292 length = ntohs(ogds->length);
8293 if (length < sizeof *ogds || length - sizeof *ogds > msg->size) {
8294 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8295 "length %u", length);
8296 return OFPERR_OFPBRC_BAD_LEN;
8299 bucket_list_len = ntohs(ogds->bucket_list_len);
8300 if (length < bucket_list_len + sizeof *ogds) {
8301 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST11_GROUP_DESC reply claims invalid "
8302 "bucket list length %u", bucket_list_len);
8303 return OFPERR_OFPBRC_BAD_LEN;
8305 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, version, gd->type,
8311 /* By definition group desc messages don't have a group mod command.
8312 * However, parse_group_prop_ntr_selection_method() checks to make sure
8313 * that the command is OFPGC15_ADD or OFPGC15_DELETE to guard
8314 * against group mod messages with other commands supplying
8315 * a NTR selection method group experimenter property.
8316 * Such properties are valid for group desc replies so
8317 * claim that the group mod command is OFPGC15_ADD to
8318 * satisfy the check in parse_group_prop_ntr_selection_method() */
8319 return parse_ofp15_group_properties(msg, gd->type, OFPGC15_ADD, &gd->props,
8320 length - sizeof *ogds - bucket_list_len);
8323 /* Converts a group description reply in 'msg' into an abstract
8324 * ofputil_group_desc in 'gd'.
8326 * Multiple group description replies can be packed into a single OpenFlow
8327 * message. Calling this function multiple times for a single 'msg' iterates
8328 * through the replies. The caller must initially leave 'msg''s layer pointers
8329 * null and not modify them between calls.
8331 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8332 * otherwise a positive errno value. */
8334 ofputil_decode_group_desc_reply(struct ofputil_group_desc *gd,
8335 struct ofpbuf *msg, enum ofp_version version)
8337 ofputil_init_group_properties(&gd->props);
8345 return ofputil_decode_ofp11_group_desc_reply(gd, msg, version);
8348 return ofputil_decode_ofp15_group_desc_reply(gd, msg, version);
8357 ofputil_uninit_group_mod(struct ofputil_group_mod *gm)
8359 ofputil_bucket_list_destroy(&gm->buckets);
8362 static struct ofpbuf *
8363 ofputil_encode_ofp11_group_mod(enum ofp_version ofp_version,
8364 const struct ofputil_group_mod *gm)
8367 struct ofp11_group_mod *ogm;
8369 struct ofputil_bucket *bucket;
8371 b = ofpraw_alloc(OFPRAW_OFPT11_GROUP_MOD, ofp_version, 0);
8372 start_ogm = b->size;
8373 ofpbuf_put_zeros(b, sizeof *ogm);
8375 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8376 ofputil_put_ofp11_bucket(bucket, b, ofp_version);
8378 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8379 ogm->command = htons(gm->command);
8380 ogm->type = gm->type;
8381 ogm->group_id = htonl(gm->group_id);
8386 static struct ofpbuf *
8387 ofputil_encode_ofp15_group_mod(enum ofp_version ofp_version,
8388 const struct ofputil_group_mod *gm)
8391 struct ofp15_group_mod *ogm;
8393 struct ofputil_bucket *bucket;
8394 struct id_pool *bucket_ids = NULL;
8396 b = ofpraw_alloc(OFPRAW_OFPT15_GROUP_MOD, ofp_version, 0);
8397 start_ogm = b->size;
8398 ofpbuf_put_zeros(b, sizeof *ogm);
8400 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8403 /* Generate a bucket id if none was supplied */
8404 if (bucket->bucket_id > OFPG15_BUCKET_MAX) {
8406 const struct ofputil_bucket *bkt;
8408 bucket_ids = id_pool_create(0, OFPG15_BUCKET_MAX + 1);
8410 /* Mark all bucket_ids that are present in gm
8411 * as used in the pool. */
8412 LIST_FOR_EACH_REVERSE (bkt, list_node, &gm->buckets) {
8413 if (bkt == bucket) {
8416 if (bkt->bucket_id <= OFPG15_BUCKET_MAX) {
8417 id_pool_add(bucket_ids, bkt->bucket_id);
8422 if (!id_pool_alloc_id(bucket_ids, &bucket_id)) {
8426 bucket_id = bucket->bucket_id;
8429 ofputil_put_ofp15_bucket(bucket, bucket_id, gm->type, b, ofp_version);
8431 ogm = ofpbuf_at_assert(b, start_ogm, sizeof *ogm);
8432 ogm->command = htons(gm->command);
8433 ogm->type = gm->type;
8434 ogm->group_id = htonl(gm->group_id);
8435 ogm->command_bucket_id = htonl(gm->command_bucket_id);
8436 ogm->bucket_array_len = htons(b->size - start_ogm - sizeof *ogm);
8438 /* Add group properties */
8439 if (gm->props.selection_method[0]) {
8440 ofputil_put_group_prop_ntr_selection_method(ofp_version, &gm->props, b);
8443 id_pool_destroy(bucket_ids);
8448 bad_group_cmd(enum ofp15_group_mod_command cmd)
8450 const char *opt_version;
8451 const char *version;
8452 const char *cmd_str;
8456 case OFPGC15_MODIFY:
8457 case OFPGC15_DELETE:
8462 case OFPGC15_INSERT_BUCKET:
8463 case OFPGC15_REMOVE_BUCKET:
8474 cmd_str = "add-group";
8477 case OFPGC15_MODIFY:
8478 cmd_str = "mod-group";
8481 case OFPGC15_DELETE:
8482 cmd_str = "del-group";
8485 case OFPGC15_INSERT_BUCKET:
8486 cmd_str = "insert-bucket";
8489 case OFPGC15_REMOVE_BUCKET:
8490 cmd_str = "remove-bucket";
8497 ovs_fatal(0, "%s needs OpenFlow %s or later (\'-O OpenFlow%s\')",
8498 cmd_str, version, opt_version);
8502 /* Converts abstract group mod 'gm' into a message for OpenFlow version
8503 * 'ofp_version' and returns the message. */
8505 ofputil_encode_group_mod(enum ofp_version ofp_version,
8506 const struct ofputil_group_mod *gm)
8509 switch (ofp_version) {
8511 bad_group_cmd(gm->command);
8517 if (gm->command > OFPGC11_DELETE) {
8518 bad_group_cmd(gm->command);
8520 return ofputil_encode_ofp11_group_mod(ofp_version, gm);
8523 return ofputil_encode_ofp15_group_mod(ofp_version, gm);
8531 ofputil_pull_ofp11_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8532 struct ofputil_group_mod *gm)
8534 const struct ofp11_group_mod *ogm;
8537 ogm = ofpbuf_pull(msg, sizeof *ogm);
8538 gm->command = ntohs(ogm->command);
8539 gm->type = ogm->type;
8540 gm->group_id = ntohl(ogm->group_id);
8541 gm->command_bucket_id = OFPG15_BUCKET_ALL;
8543 error = ofputil_pull_ofp11_buckets(msg, msg->size, ofp_version,
8546 /* OF1.3.5+ prescribes an error when an OFPGC_DELETE includes buckets. */
8548 && ofp_version >= OFP13_VERSION
8549 && gm->command == OFPGC11_DELETE
8550 && !list_is_empty(&gm->buckets)) {
8551 error = OFPERR_OFPGMFC_INVALID_GROUP;
8558 ofputil_pull_ofp15_group_mod(struct ofpbuf *msg, enum ofp_version ofp_version,
8559 struct ofputil_group_mod *gm)
8561 const struct ofp15_group_mod *ogm;
8562 uint16_t bucket_list_len;
8563 enum ofperr error = OFPERR_OFPGMFC_BAD_BUCKET;
8565 ogm = ofpbuf_pull(msg, sizeof *ogm);
8566 gm->command = ntohs(ogm->command);
8567 gm->type = ogm->type;
8568 gm->group_id = ntohl(ogm->group_id);
8570 gm->command_bucket_id = ntohl(ogm->command_bucket_id);
8571 switch (gm->command) {
8572 case OFPGC15_REMOVE_BUCKET:
8573 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8577 case OFPGC15_INSERT_BUCKET:
8578 if (gm->command_bucket_id <= OFPG15_BUCKET_MAX ||
8579 gm->command_bucket_id == OFPG15_BUCKET_FIRST
8580 || gm->command_bucket_id == OFPG15_BUCKET_LAST) {
8586 case OFPGC11_MODIFY:
8587 case OFPGC11_DELETE:
8589 if (gm->command_bucket_id == OFPG15_BUCKET_ALL) {
8595 VLOG_WARN_RL(&bad_ofmsg_rl,
8596 "group command bucket id (%u) is out of range",
8597 gm->command_bucket_id);
8598 return OFPERR_OFPGMFC_BAD_BUCKET;
8601 bucket_list_len = ntohs(ogm->bucket_array_len);
8602 error = ofputil_pull_ofp15_buckets(msg, bucket_list_len, ofp_version,
8603 gm->type, &gm->buckets);
8608 return parse_ofp15_group_properties(msg, gm->type, gm->command, &gm->props,
8612 /* Converts OpenFlow group mod message 'oh' into an abstract group mod in
8613 * 'gm'. Returns 0 if successful, otherwise an OpenFlow error code. */
8615 ofputil_decode_group_mod(const struct ofp_header *oh,
8616 struct ofputil_group_mod *gm)
8618 ofputil_init_group_properties(&gm->props);
8620 enum ofp_version ofp_version = oh->version;
8621 struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
8622 ofpraw_pull_assert(&msg);
8625 switch (ofp_version)
8631 err = ofputil_pull_ofp11_group_mod(&msg, ofp_version, gm);
8635 err = ofputil_pull_ofp15_group_mod(&msg, ofp_version, gm);
8647 case OFPGT11_INDIRECT:
8648 if (!list_is_singleton(&gm->buckets)) {
8649 return OFPERR_OFPGMFC_INVALID_GROUP;
8653 case OFPGT11_SELECT:
8657 return OFPERR_OFPGMFC_BAD_TYPE;
8660 switch (gm->command) {
8662 case OFPGC11_MODIFY:
8663 case OFPGC11_DELETE:
8664 case OFPGC15_INSERT_BUCKET:
8666 case OFPGC15_REMOVE_BUCKET:
8667 if (!list_is_empty(&gm->buckets)) {
8668 return OFPERR_OFPGMFC_BAD_BUCKET;
8672 return OFPERR_OFPGMFC_BAD_COMMAND;
8675 struct ofputil_bucket *bucket;
8676 LIST_FOR_EACH (bucket, list_node, &gm->buckets) {
8677 if (bucket->weight && gm->type != OFPGT11_SELECT) {
8678 return OFPERR_OFPGMFC_INVALID_GROUP;
8683 case OFPGT11_INDIRECT:
8684 if (ofputil_bucket_has_liveness(bucket)) {
8685 return OFPERR_OFPGMFC_WATCH_UNSUPPORTED;
8688 case OFPGT11_SELECT:
8691 if (!ofputil_bucket_has_liveness(bucket)) {
8692 return OFPERR_OFPGMFC_INVALID_GROUP;
8696 /* Returning BAD TYPE to be consistent
8697 * though gm->type has been checked already. */
8698 return OFPERR_OFPGMFC_BAD_TYPE;
8705 /* Parse a queue status request message into 'oqsr'.
8706 * Returns 0 if successful, otherwise an OFPERR_* number. */
8708 ofputil_decode_queue_stats_request(const struct ofp_header *request,
8709 struct ofputil_queue_stats_request *oqsr)
8711 switch ((enum ofp_version)request->version) {
8716 case OFP11_VERSION: {
8717 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
8718 oqsr->queue_id = ntohl(qsr11->queue_id);
8719 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
8722 case OFP10_VERSION: {
8723 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
8724 oqsr->queue_id = ntohl(qsr10->queue_id);
8725 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
8726 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
8727 if (oqsr->port_no == OFPP_ALL) {
8728 oqsr->port_no = OFPP_ANY;
8738 /* Encode a queue stats request for 'oqsr', the encoded message
8739 * will be for OpenFlow version 'ofp_version'. Returns message
8740 * as a struct ofpbuf. Returns encoded message on success, NULL on error. */
8742 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
8743 const struct ofputil_queue_stats_request *oqsr)
8745 struct ofpbuf *request;
8747 switch (ofp_version) {
8752 case OFP15_VERSION: {
8753 struct ofp11_queue_stats_request *req;
8754 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
8755 req = ofpbuf_put_zeros(request, sizeof *req);
8756 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
8757 req->queue_id = htonl(oqsr->queue_id);
8760 case OFP10_VERSION: {
8761 struct ofp10_queue_stats_request *req;
8762 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
8763 req = ofpbuf_put_zeros(request, sizeof *req);
8764 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
8765 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
8766 ? OFPP_ALL : oqsr->port_no));
8767 req->queue_id = htonl(oqsr->queue_id);
8777 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
8780 ofputil_count_queue_stats(const struct ofp_header *oh)
8782 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
8783 ofpraw_pull_assert(&b);
8785 for (size_t n = 0; ; n++) {
8786 struct ofputil_queue_stats qs;
8787 if (ofputil_decode_queue_stats(&qs, &b)) {
8794 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
8795 const struct ofp10_queue_stats *qs10)
8797 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
8798 oqs->queue_id = ntohl(qs10->queue_id);
8799 oqs->tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
8800 oqs->tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
8801 oqs->tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
8802 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8808 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
8809 const struct ofp11_queue_stats *qs11)
8813 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
8818 oqs->queue_id = ntohl(qs11->queue_id);
8819 oqs->tx_bytes = ntohll(qs11->tx_bytes);
8820 oqs->tx_packets = ntohll(qs11->tx_packets);
8821 oqs->tx_errors = ntohll(qs11->tx_errors);
8822 oqs->duration_sec = oqs->duration_nsec = UINT32_MAX;
8828 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
8829 const struct ofp13_queue_stats *qs13)
8831 enum ofperr error = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
8833 oqs->duration_sec = ntohl(qs13->duration_sec);
8834 oqs->duration_nsec = ntohl(qs13->duration_nsec);
8841 ofputil_pull_ofp14_queue_stats(struct ofputil_queue_stats *oqs,
8844 const struct ofp14_queue_stats *qs14;
8847 qs14 = ofpbuf_try_pull(msg, sizeof *qs14);
8849 return OFPERR_OFPBRC_BAD_LEN;
8852 len = ntohs(qs14->length);
8853 if (len < sizeof *qs14 || len - sizeof *qs14 > msg->size) {
8854 return OFPERR_OFPBRC_BAD_LEN;
8856 ofpbuf_pull(msg, len - sizeof *qs14);
8858 /* No properties yet defined, so ignore them for now. */
8860 return ofputil_queue_stats_from_ofp13(oqs, &qs14->qs);
8863 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
8864 * ofputil_queue_stats in 'qs'.
8866 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
8867 * message. Calling this function multiple times for a single 'msg' iterates
8868 * through the replies. The caller must initially leave 'msg''s layer pointers
8869 * null and not modify them between calls.
8871 * Returns 0 if successful, EOF if no replies were left in this 'msg',
8872 * otherwise a positive errno value. */
8874 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
8879 error = (msg->header ? ofpraw_decode(&raw, msg->header)
8880 : ofpraw_pull(&raw, msg));
8887 } else if (raw == OFPRAW_OFPST14_QUEUE_REPLY) {
8888 return ofputil_pull_ofp14_queue_stats(qs, msg);
8889 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
8890 const struct ofp13_queue_stats *qs13;
8892 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
8896 return ofputil_queue_stats_from_ofp13(qs, qs13);
8897 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
8898 const struct ofp11_queue_stats *qs11;
8900 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
8904 return ofputil_queue_stats_from_ofp11(qs, qs11);
8905 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
8906 const struct ofp10_queue_stats *qs10;
8908 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
8912 return ofputil_queue_stats_from_ofp10(qs, qs10);
8918 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %"PRIu32" leftover "
8919 "bytes at end", msg->size);
8920 return OFPERR_OFPBRC_BAD_LEN;
8924 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
8925 struct ofp10_queue_stats *qs10)
8927 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
8928 memset(qs10->pad, 0, sizeof qs10->pad);
8929 qs10->queue_id = htonl(oqs->queue_id);
8930 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->tx_bytes));
8931 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->tx_packets));
8932 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->tx_errors));
8936 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
8937 struct ofp11_queue_stats *qs11)
8939 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
8940 qs11->queue_id = htonl(oqs->queue_id);
8941 qs11->tx_bytes = htonll(oqs->tx_bytes);
8942 qs11->tx_packets = htonll(oqs->tx_packets);
8943 qs11->tx_errors = htonll(oqs->tx_errors);
8947 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
8948 struct ofp13_queue_stats *qs13)
8950 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
8951 if (oqs->duration_sec != UINT32_MAX) {
8952 qs13->duration_sec = htonl(oqs->duration_sec);
8953 qs13->duration_nsec = htonl(oqs->duration_nsec);
8955 qs13->duration_sec = OVS_BE32_MAX;
8956 qs13->duration_nsec = OVS_BE32_MAX;
8961 ofputil_queue_stats_to_ofp14(const struct ofputil_queue_stats *oqs,
8962 struct ofp14_queue_stats *qs14)
8964 qs14->length = htons(sizeof *qs14);
8965 memset(qs14->pad, 0, sizeof qs14->pad);
8966 ofputil_queue_stats_to_ofp13(oqs, &qs14->qs);
8970 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
8972 ofputil_append_queue_stat(struct ovs_list *replies,
8973 const struct ofputil_queue_stats *oqs)
8975 switch (ofpmp_version(replies)) {
8976 case OFP13_VERSION: {
8977 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8978 ofputil_queue_stats_to_ofp13(oqs, reply);
8983 case OFP11_VERSION: {
8984 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8985 ofputil_queue_stats_to_ofp11(oqs, reply);
8989 case OFP10_VERSION: {
8990 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8991 ofputil_queue_stats_to_ofp10(oqs, reply);
8996 case OFP15_VERSION: {
8997 struct ofp14_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
8998 ofputil_queue_stats_to_ofp14(oqs, reply);
9008 ofputil_decode_bundle_ctrl(const struct ofp_header *oh,
9009 struct ofputil_bundle_ctrl_msg *msg)
9011 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
9012 enum ofpraw raw = ofpraw_pull_assert(&b);
9013 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_CONTROL);
9015 const struct ofp14_bundle_ctrl_msg *m = b.msg;
9016 msg->bundle_id = ntohl(m->bundle_id);
9017 msg->type = ntohs(m->type);
9018 msg->flags = ntohs(m->flags);
9024 ofputil_encode_bundle_ctrl_request(enum ofp_version ofp_version,
9025 struct ofputil_bundle_ctrl_msg *bc)
9027 struct ofpbuf *request;
9028 struct ofp14_bundle_ctrl_msg *m;
9030 switch (ofp_version) {
9035 ovs_fatal(0, "bundles need OpenFlow 1.4 or later "
9036 "(\'-O OpenFlow14\')");
9039 request = ofpraw_alloc(OFPRAW_OFPT14_BUNDLE_CONTROL, ofp_version, 0);
9040 m = ofpbuf_put_zeros(request, sizeof *m);
9042 m->bundle_id = htonl(bc->bundle_id);
9043 m->type = htons(bc->type);
9044 m->flags = htons(bc->flags);
9054 ofputil_encode_bundle_ctrl_reply(const struct ofp_header *oh,
9055 struct ofputil_bundle_ctrl_msg *msg)
9058 struct ofp14_bundle_ctrl_msg *m;
9060 buf = ofpraw_alloc_reply(OFPRAW_OFPT14_BUNDLE_CONTROL, oh, 0);
9061 m = ofpbuf_put_zeros(buf, sizeof *m);
9063 m->bundle_id = htonl(msg->bundle_id);
9064 m->type = htons(msg->type);
9065 m->flags = htons(msg->flags);
9070 /* Return true for bundlable state change requests, false for other messages.
9073 ofputil_is_bundlable(enum ofptype type)
9076 /* Minimum required by OpenFlow 1.4. */
9077 case OFPTYPE_PORT_MOD:
9078 case OFPTYPE_FLOW_MOD:
9081 /* Nice to have later. */
9082 case OFPTYPE_FLOW_MOD_TABLE_ID:
9083 case OFPTYPE_GROUP_MOD:
9084 case OFPTYPE_TABLE_MOD:
9085 case OFPTYPE_METER_MOD:
9086 case OFPTYPE_PACKET_OUT:
9087 case OFPTYPE_NXT_TLV_TABLE_MOD:
9089 /* Not to be bundlable. */
9090 case OFPTYPE_ECHO_REQUEST:
9091 case OFPTYPE_FEATURES_REQUEST:
9092 case OFPTYPE_GET_CONFIG_REQUEST:
9093 case OFPTYPE_SET_CONFIG:
9094 case OFPTYPE_BARRIER_REQUEST:
9095 case OFPTYPE_ROLE_REQUEST:
9096 case OFPTYPE_ECHO_REPLY:
9097 case OFPTYPE_SET_FLOW_FORMAT:
9098 case OFPTYPE_SET_PACKET_IN_FORMAT:
9099 case OFPTYPE_SET_CONTROLLER_ID:
9100 case OFPTYPE_FLOW_AGE:
9101 case OFPTYPE_FLOW_MONITOR_CANCEL:
9102 case OFPTYPE_SET_ASYNC_CONFIG:
9103 case OFPTYPE_GET_ASYNC_REQUEST:
9104 case OFPTYPE_DESC_STATS_REQUEST:
9105 case OFPTYPE_FLOW_STATS_REQUEST:
9106 case OFPTYPE_AGGREGATE_STATS_REQUEST:
9107 case OFPTYPE_TABLE_STATS_REQUEST:
9108 case OFPTYPE_TABLE_FEATURES_STATS_REQUEST:
9109 case OFPTYPE_TABLE_DESC_REQUEST:
9110 case OFPTYPE_PORT_STATS_REQUEST:
9111 case OFPTYPE_QUEUE_STATS_REQUEST:
9112 case OFPTYPE_PORT_DESC_STATS_REQUEST:
9113 case OFPTYPE_FLOW_MONITOR_STATS_REQUEST:
9114 case OFPTYPE_METER_STATS_REQUEST:
9115 case OFPTYPE_METER_CONFIG_STATS_REQUEST:
9116 case OFPTYPE_METER_FEATURES_STATS_REQUEST:
9117 case OFPTYPE_GROUP_STATS_REQUEST:
9118 case OFPTYPE_GROUP_DESC_STATS_REQUEST:
9119 case OFPTYPE_GROUP_FEATURES_STATS_REQUEST:
9120 case OFPTYPE_QUEUE_GET_CONFIG_REQUEST:
9121 case OFPTYPE_BUNDLE_CONTROL:
9122 case OFPTYPE_BUNDLE_ADD_MESSAGE:
9125 case OFPTYPE_FEATURES_REPLY:
9126 case OFPTYPE_GET_CONFIG_REPLY:
9127 case OFPTYPE_PACKET_IN:
9128 case OFPTYPE_FLOW_REMOVED:
9129 case OFPTYPE_PORT_STATUS:
9130 case OFPTYPE_BARRIER_REPLY:
9131 case OFPTYPE_QUEUE_GET_CONFIG_REPLY:
9132 case OFPTYPE_DESC_STATS_REPLY:
9133 case OFPTYPE_FLOW_STATS_REPLY:
9134 case OFPTYPE_QUEUE_STATS_REPLY:
9135 case OFPTYPE_PORT_STATS_REPLY:
9136 case OFPTYPE_TABLE_STATS_REPLY:
9137 case OFPTYPE_AGGREGATE_STATS_REPLY:
9138 case OFPTYPE_PORT_DESC_STATS_REPLY:
9139 case OFPTYPE_ROLE_REPLY:
9140 case OFPTYPE_FLOW_MONITOR_PAUSED:
9141 case OFPTYPE_FLOW_MONITOR_RESUMED:
9142 case OFPTYPE_FLOW_MONITOR_STATS_REPLY:
9143 case OFPTYPE_GET_ASYNC_REPLY:
9144 case OFPTYPE_GROUP_STATS_REPLY:
9145 case OFPTYPE_GROUP_DESC_STATS_REPLY:
9146 case OFPTYPE_GROUP_FEATURES_STATS_REPLY:
9147 case OFPTYPE_METER_STATS_REPLY:
9148 case OFPTYPE_METER_CONFIG_STATS_REPLY:
9149 case OFPTYPE_METER_FEATURES_STATS_REPLY:
9150 case OFPTYPE_TABLE_FEATURES_STATS_REPLY:
9151 case OFPTYPE_TABLE_DESC_REPLY:
9152 case OFPTYPE_ROLE_STATUS:
9153 case OFPTYPE_REQUESTFORWARD:
9154 case OFPTYPE_NXT_TLV_TABLE_REQUEST:
9155 case OFPTYPE_NXT_TLV_TABLE_REPLY:
9163 ofputil_decode_bundle_add(const struct ofp_header *oh,
9164 struct ofputil_bundle_add_msg *msg,
9165 enum ofptype *typep)
9167 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
9168 enum ofpraw raw = ofpraw_pull_assert(&b);
9169 ovs_assert(raw == OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE);
9171 const struct ofp14_bundle_ctrl_msg *m = ofpbuf_pull(&b, sizeof *m);
9172 msg->bundle_id = ntohl(m->bundle_id);
9173 msg->flags = ntohs(m->flags);
9176 if (msg->msg->version != oh->version) {
9177 return OFPERR_NXBFC_BAD_VERSION;
9179 size_t inner_len = ntohs(msg->msg->length);
9180 if (inner_len < sizeof(struct ofp_header) || inner_len > b.size) {
9181 return OFPERR_OFPBFC_MSG_BAD_LEN;
9183 if (msg->msg->xid != oh->xid) {
9184 return OFPERR_OFPBFC_MSG_BAD_XID;
9187 /* Reject unbundlable messages. */
9189 enum ofperr error = ofptype_decode(&type, msg->msg);
9191 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPT14_BUNDLE_ADD_MESSAGE contained "
9192 "message is unparsable (%s)", ofperr_get_name(error));
9193 return OFPERR_OFPBFC_MSG_UNSUP; /* 'error' would be confusing. */
9196 if (!ofputil_is_bundlable(type)) {
9197 VLOG_WARN_RL(&bad_ofmsg_rl, "%s message not allowed inside "
9198 "OFPT14_BUNDLE_ADD_MESSAGE", ofptype_get_name(type));
9199 return OFPERR_OFPBFC_MSG_UNSUP;
9209 ofputil_encode_bundle_add(enum ofp_version ofp_version,
9210 struct ofputil_bundle_add_msg *msg)
9212 struct ofpbuf *request;
9213 struct ofp14_bundle_ctrl_msg *m;
9215 /* Must use the same xid as the embedded message. */
9216 request = ofpraw_alloc_xid(OFPRAW_OFPT14_BUNDLE_ADD_MESSAGE, ofp_version,
9218 m = ofpbuf_put_zeros(request, sizeof *m);
9220 m->bundle_id = htonl(msg->bundle_id);
9221 m->flags = htons(msg->flags);
9222 ofpbuf_put(request, msg->msg, ntohs(msg->msg->length));
9228 encode_tlv_table_mappings(struct ofpbuf *b, struct ovs_list *mappings)
9230 struct ofputil_tlv_map *map;
9232 LIST_FOR_EACH (map, list_node, mappings) {
9233 struct nx_tlv_map *nx_map;
9235 nx_map = ofpbuf_put_zeros(b, sizeof *nx_map);
9236 nx_map->option_class = htons(map->option_class);
9237 nx_map->option_type = map->option_type;
9238 nx_map->option_len = map->option_len;
9239 nx_map->index = htons(map->index);
9244 ofputil_encode_tlv_table_mod(enum ofp_version ofp_version,
9245 struct ofputil_tlv_table_mod *ttm)
9248 struct nx_tlv_table_mod *nx_ttm;
9250 b = ofpraw_alloc(OFPRAW_NXT_TLV_TABLE_MOD, ofp_version, 0);
9251 nx_ttm = ofpbuf_put_zeros(b, sizeof *nx_ttm);
9252 nx_ttm->command = htons(ttm->command);
9253 encode_tlv_table_mappings(b, &ttm->mappings);
9259 decode_tlv_table_mappings(struct ofpbuf *msg, unsigned int max_fields,
9260 struct ovs_list *mappings)
9262 list_init(mappings);
9265 struct nx_tlv_map *nx_map;
9266 struct ofputil_tlv_map *map;
9268 nx_map = ofpbuf_pull(msg, sizeof *nx_map);
9269 map = xmalloc(sizeof *map);
9270 list_push_back(mappings, &map->list_node);
9272 map->option_class = ntohs(nx_map->option_class);
9273 map->option_type = nx_map->option_type;
9275 map->option_len = nx_map->option_len;
9276 if (map->option_len % 4 || map->option_len > TLV_MAX_OPT_SIZE) {
9277 VLOG_WARN_RL(&bad_ofmsg_rl,
9278 "tlv table option length (%u) is not a valid option size",
9280 ofputil_uninit_tlv_table(mappings);
9281 return OFPERR_NXTTMFC_BAD_OPT_LEN;
9284 map->index = ntohs(nx_map->index);
9285 if (map->index >= max_fields) {
9286 VLOG_WARN_RL(&bad_ofmsg_rl,
9287 "tlv table field index (%u) is too large (max %u)",
9288 map->index, max_fields - 1);
9289 ofputil_uninit_tlv_table(mappings);
9290 return OFPERR_NXTTMFC_BAD_FIELD_IDX;
9298 ofputil_decode_tlv_table_mod(const struct ofp_header *oh,
9299 struct ofputil_tlv_table_mod *ttm)
9301 struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
9302 ofpraw_pull_assert(&msg);
9304 struct nx_tlv_table_mod *nx_ttm = ofpbuf_pull(&msg, sizeof *nx_ttm);
9305 ttm->command = ntohs(nx_ttm->command);
9306 if (ttm->command > NXTTMC_CLEAR) {
9307 VLOG_WARN_RL(&bad_ofmsg_rl,
9308 "tlv table mod command (%u) is out of range",
9310 return OFPERR_NXTTMFC_BAD_COMMAND;
9313 return decode_tlv_table_mappings(&msg, TUN_METADATA_NUM_OPTS,
9318 ofputil_encode_tlv_table_reply(const struct ofp_header *oh,
9319 struct ofputil_tlv_table_reply *ttr)
9322 struct nx_tlv_table_reply *nx_ttr;
9324 b = ofpraw_alloc_reply(OFPRAW_NXT_TLV_TABLE_REPLY, oh, 0);
9325 nx_ttr = ofpbuf_put_zeros(b, sizeof *nx_ttr);
9326 nx_ttr->max_option_space = htonl(ttr->max_option_space);
9327 nx_ttr->max_fields = htons(ttr->max_fields);
9329 encode_tlv_table_mappings(b, &ttr->mappings);
9334 /* Decodes the NXT_TLV_TABLE_REPLY message in 'oh' into '*ttr'. Returns 0
9335 * if successful, otherwise an ofperr.
9337 * The decoder verifies that the indexes in 'ttr->mappings' are less than
9338 * 'ttr->max_fields', but the caller must ensure, if necessary, that they are
9339 * less than TUN_METADATA_NUM_OPTS. */
9341 ofputil_decode_tlv_table_reply(const struct ofp_header *oh,
9342 struct ofputil_tlv_table_reply *ttr)
9344 struct ofpbuf msg = ofpbuf_const_initializer(oh, ntohs(oh->length));
9345 ofpraw_pull_assert(&msg);
9347 struct nx_tlv_table_reply *nx_ttr = ofpbuf_pull(&msg, sizeof *nx_ttr);
9348 ttr->max_option_space = ntohl(nx_ttr->max_option_space);
9349 ttr->max_fields = ntohs(nx_ttr->max_fields);
9351 return decode_tlv_table_mappings(&msg, ttr->max_fields, &ttr->mappings);
9355 ofputil_uninit_tlv_table(struct ovs_list *mappings)
9357 struct ofputil_tlv_map *map;
9359 LIST_FOR_EACH_POP (map, list_node, mappings) {
9365 ofputil_async_msg_type_to_string(enum ofputil_async_msg_type type)
9368 case OAM_PACKET_IN: return "PACKET_IN";
9369 case OAM_PORT_STATUS: return "PORT_STATUS";
9370 case OAM_FLOW_REMOVED: return "FLOW_REMOVED";
9371 case OAM_ROLE_STATUS: return "ROLE_STATUS";
9372 case OAM_TABLE_STATUS: return "TABLE_STATUS";
9373 case OAM_REQUESTFORWARD: return "REQUESTFORWARD";
9381 struct ofp14_async_prop {
9383 enum ofputil_async_msg_type oam;
9385 uint32_t allowed10, allowed14;
9388 #define AP_PAIR(SLAVE_PROP_TYPE, OAM, A10, A14) \
9389 { SLAVE_PROP_TYPE, OAM, false, A10, (A14) ? (A14) : (A10) }, \
9390 { (SLAVE_PROP_TYPE + 1), OAM, true, A10, (A14) ? (A14) : (A10) }
9392 static const struct ofp14_async_prop async_props[] = {
9393 AP_PAIR( 0, OAM_PACKET_IN, OFPR10_BITS, OFPR14_BITS),
9394 AP_PAIR( 2, OAM_PORT_STATUS, (1 << OFPPR_N_REASONS) - 1, 0),
9395 AP_PAIR( 4, OAM_FLOW_REMOVED, (1 << OVS_OFPRR_NONE) - 1, 0),
9396 AP_PAIR( 6, OAM_ROLE_STATUS, (1 << OFPCRR_N_REASONS) - 1, 0),
9397 AP_PAIR( 8, OAM_TABLE_STATUS, OFPTR_BITS, 0),
9398 AP_PAIR(10, OAM_REQUESTFORWARD, (1 << OFPRFR_N_REASONS) - 1, 0),
9401 #define FOR_EACH_ASYNC_PROP(VAR) \
9402 for (const struct ofp14_async_prop *VAR = async_props; \
9403 VAR < &async_props[ARRAY_SIZE(async_props)]; VAR++)
9405 static const struct ofp14_async_prop *
9406 get_ofp14_async_config_prop_by_prop_type(uint64_t prop_type)
9408 FOR_EACH_ASYNC_PROP (ap) {
9409 if (prop_type == ap->prop_type) {
9416 static const struct ofp14_async_prop *
9417 get_ofp14_async_config_prop_by_oam(enum ofputil_async_msg_type oam,
9420 FOR_EACH_ASYNC_PROP (ap) {
9421 if (ap->oam == oam && ap->master == master) {
9429 ofp14_async_prop_allowed(const struct ofp14_async_prop *prop,
9430 enum ofp_version version)
9432 return version >= OFP14_VERSION ? prop->allowed14 : prop->allowed10;
9436 encode_async_mask(const struct ofputil_async_cfg *src,
9437 const struct ofp14_async_prop *ap,
9438 enum ofp_version version)
9440 uint32_t mask = ap->master ? src->master[ap->oam] : src->slave[ap->oam];
9441 return htonl(mask & ofp14_async_prop_allowed(ap, version));
9445 decode_async_mask(ovs_be32 src,
9446 const struct ofp14_async_prop *ap, enum ofp_version version,
9447 bool loose, struct ofputil_async_cfg *dst)
9449 uint32_t mask = ntohl(src);
9450 uint32_t allowed = ofp14_async_prop_allowed(ap, version);
9451 if (mask & ~allowed) {
9452 OFPPROP_LOG(&bad_ofmsg_rl, loose,
9453 "bad value %#x for %s (allowed mask %#x)",
9454 mask, ofputil_async_msg_type_to_string(ap->oam),
9458 return OFPERR_OFPACFC_INVALID;
9462 if (ap->oam == OAM_PACKET_IN) {
9463 if (mask & (1u << OFPR_NO_MATCH)) {
9464 mask |= 1u << OFPR_EXPLICIT_MISS;
9465 if (version < OFP13_VERSION) {
9466 mask |= 1u << OFPR_IMPLICIT_MISS;
9471 uint32_t *array = ap->master ? dst->master : dst->slave;
9472 array[ap->oam] = mask;
9477 parse_async_tlv(const struct ofpbuf *property,
9478 const struct ofp14_async_prop *ap,
9479 struct ofputil_async_cfg *ac,
9480 enum ofp_version version, bool loose)
9485 error = ofpprop_parse_be32(property, &mask);
9490 if (ofpprop_is_experimenter(ap->prop_type)) {
9491 /* For experimenter properties, whether a property is for the master or
9492 * slave role is indicated by both 'type' and 'exp_type' in struct
9493 * ofp_prop_experimenter. Check that these are consistent. */
9494 const struct ofp_prop_experimenter *ope = property->data;
9495 bool should_be_master = ope->type == htons(0xffff);
9496 if (should_be_master != ap->master) {
9497 VLOG_WARN_RL(&bad_ofmsg_rl, "async property type %#"PRIx16" "
9498 "indicates %s role but exp_type %"PRIu32" indicates "
9501 should_be_master ? "master" : "slave",
9502 ntohl(ope->exp_type),
9503 ap->master ? "master" : "slave");
9504 return OFPERR_OFPBPC_BAD_EXP_TYPE;
9508 return decode_async_mask(mask, ap, version, loose, ac);
9512 decode_legacy_async_masks(const ovs_be32 masks[2],
9513 enum ofputil_async_msg_type oam,
9514 enum ofp_version version,
9515 struct ofputil_async_cfg *dst)
9517 for (int i = 0; i < 2; i++) {
9518 bool master = i == 0;
9519 const struct ofp14_async_prop *ap
9520 = get_ofp14_async_config_prop_by_oam(oam, master);
9521 decode_async_mask(masks[i], ap, version, true, dst);
9525 /* Decodes the OpenFlow "set async config" request and "get async config
9526 * reply" message in '*oh' into an abstract form in 'ac'.
9528 * Some versions of the "set async config" request change only some of the
9529 * settings and leave the others alone. This function uses 'basis' as the
9530 * initial state for decoding these. Other versions of the request change all
9531 * the settings; this function ignores 'basis' when decoding these.
9533 * If 'loose' is true, this function ignores properties and values that it does
9534 * not understand, as a controller would want to do when interpreting
9535 * capabilities provided by a switch. If 'loose' is false, this function
9536 * treats unknown properties and values as an error, as a switch would want to
9537 * do when interpreting a configuration request made by a controller.
9539 * Returns 0 if successful, otherwise an OFPERR_* value.
9541 * Returns error code OFPERR_OFPACFC_INVALID if the value of mask is not in
9542 * the valid range of mask.
9544 * Returns error code OFPERR_OFPACFC_UNSUPPORTED if the configuration is not
9547 ofputil_decode_set_async_config(const struct ofp_header *oh, bool loose,
9548 const struct ofputil_async_cfg *basis,
9549 struct ofputil_async_cfg *ac)
9551 struct ofpbuf b = ofpbuf_const_initializer(oh, ntohs(oh->length));
9552 enum ofpraw raw = ofpraw_pull_assert(&b);
9554 if (raw == OFPRAW_OFPT13_SET_ASYNC ||
9555 raw == OFPRAW_NXT_SET_ASYNC_CONFIG ||
9556 raw == OFPRAW_OFPT13_GET_ASYNC_REPLY) {
9557 const struct nx_async_config *msg = ofpmsg_body(oh);
9559 *ac = OFPUTIL_ASYNC_CFG_INIT;
9560 decode_legacy_async_masks(msg->packet_in_mask, OAM_PACKET_IN,
9562 decode_legacy_async_masks(msg->port_status_mask, OAM_PORT_STATUS,
9564 decode_legacy_async_masks(msg->flow_removed_mask, OAM_FLOW_REMOVED,
9566 } else if (raw == OFPRAW_OFPT14_SET_ASYNC ||
9567 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY ||
9568 raw == OFPRAW_NXT_SET_ASYNC_CONFIG2) {
9570 while (b.size > 0) {
9571 struct ofpbuf property;
9575 error = ofpprop_pull__(&b, &property, 8, 0xfffe, &type);
9580 const struct ofp14_async_prop *ap
9581 = get_ofp14_async_config_prop_by_prop_type(type);
9583 ? parse_async_tlv(&property, ap, ac, oh->version, loose)
9584 : OFPPROP_UNKNOWN(loose, "async config", type));
9586 /* Most messages use OFPBPC_BAD_TYPE but async has its own (who
9587 * knows why, it's OpenFlow. */
9588 if (error == OFPERR_OFPBPC_BAD_TYPE) {
9589 error = OFPERR_OFPACFC_UNSUPPORTED;
9595 return OFPERR_OFPBRC_BAD_VERSION;
9601 encode_legacy_async_masks(const struct ofputil_async_cfg *ac,
9602 enum ofputil_async_msg_type oam,
9603 enum ofp_version version,
9606 for (int i = 0; i < 2; i++) {
9607 bool master = i == 0;
9608 const struct ofp14_async_prop *ap
9609 = get_ofp14_async_config_prop_by_oam(oam, master);
9610 masks[i] = encode_async_mask(ac, ap, version);
9615 ofputil_put_async_config__(const struct ofputil_async_cfg *ac,
9616 struct ofpbuf *buf, bool tlv,
9617 enum ofp_version version, uint32_t oams)
9620 struct nx_async_config *msg = ofpbuf_put_zeros(buf, sizeof *msg);
9621 encode_legacy_async_masks(ac, OAM_PACKET_IN, version,
9622 msg->packet_in_mask);
9623 encode_legacy_async_masks(ac, OAM_PORT_STATUS, version,
9624 msg->port_status_mask);
9625 encode_legacy_async_masks(ac, OAM_FLOW_REMOVED, version,
9626 msg->flow_removed_mask);
9628 FOR_EACH_ASYNC_PROP (ap) {
9629 if (oams & (1u << ap->oam)) {
9630 size_t ofs = buf->size;
9631 ofpprop_put_be32(buf, ap->prop_type,
9632 encode_async_mask(ac, ap, version));
9634 /* For experimenter properties, we need to use type 0xfffe for
9635 * master and 0xffff for slaves. */
9636 if (ofpprop_is_experimenter(ap->prop_type)) {
9637 struct ofp_prop_experimenter *ope
9638 = ofpbuf_at_assert(buf, ofs, sizeof *ope);
9639 ope->type = ap->master ? htons(0xffff) : htons(0xfffe);
9646 /* Encodes and returns a reply to the OFPT_GET_ASYNC_REQUEST in 'oh' that
9647 * states that the asynchronous message configuration is 'ac'. */
9649 ofputil_encode_get_async_reply(const struct ofp_header *oh,
9650 const struct ofputil_async_cfg *ac)
9654 enum ofpraw raw = (oh->version < OFP14_VERSION
9655 ? OFPRAW_OFPT13_GET_ASYNC_REPLY
9656 : OFPRAW_OFPT14_GET_ASYNC_REPLY);
9657 struct ofpbuf *reply = ofpraw_alloc_reply(raw, oh, 0);
9658 ofputil_put_async_config__(ac, reply,
9659 raw == OFPRAW_OFPT14_GET_ASYNC_REPLY,
9660 oh->version, UINT32_MAX);
9666 /* Encodes and returns a message, in a format appropriate for OpenFlow version
9667 * 'ofp_version', that sets the asynchronous message configuration to 'ac'.
9669 * Specify 'oams' as a bitmap of OAM_* that indicate the asynchronous messages
9670 * to configure. OF1.0 through OF1.3 can't natively configure a subset of
9671 * messages, so more messages than requested may be configured. OF1.0 through
9672 * OF1.3 also can't configure OVS extension OAM_* values, so if 'oam' includes
9673 * any extensions then this function encodes an Open vSwitch extension message
9674 * that does support configuring OVS extension OAM_*. */
9676 ofputil_encode_set_async_config(const struct ofputil_async_cfg *ac,
9677 uint32_t oams, enum ofp_version ofp_version)
9679 enum ofpraw raw = (ofp_version >= OFP14_VERSION ? OFPRAW_OFPT14_SET_ASYNC
9680 : oams & OAM_EXTENSIONS ? OFPRAW_NXT_SET_ASYNC_CONFIG2
9681 : ofp_version >= OFP13_VERSION ? OFPRAW_OFPT13_SET_ASYNC
9682 : OFPRAW_NXT_SET_ASYNC_CONFIG);
9683 struct ofpbuf *request = ofpraw_alloc(raw, ofp_version, 0);
9684 ofputil_put_async_config__(ac, request,
9685 (raw == OFPRAW_OFPT14_SET_ASYNC ||
9686 raw == OFPRAW_NXT_SET_ASYNC_CONFIG2),
9691 struct ofputil_async_cfg
9692 ofputil_async_cfg_default(enum ofp_version version)
9694 /* We enable all of the OF1.4 reasons regardless of 'version' because the
9695 * reasons added in OF1.4 just are just refinements of the OFPR_ACTION
9696 * introduced in OF1.0, breaking it into more specific categories. When we
9697 * encode these for earlier OpenFlow versions, we translate them into
9699 uint32_t pin = OFPR14_BITS & ~(1u << OFPR_INVALID_TTL);
9700 pin |= 1u << OFPR_EXPLICIT_MISS;
9701 if (version <= OFP12_VERSION) {
9702 pin |= 1u << OFPR_IMPLICIT_MISS;
9705 return (struct ofputil_async_cfg) {
9706 .master[OAM_PACKET_IN] = pin,
9708 .master[OAM_FLOW_REMOVED]
9709 = (version >= OFP14_VERSION ? OFPRR14_BITS : OFPRR10_BITS),
9711 .master[OAM_PORT_STATUS] = OFPPR_BITS,
9712 .slave[OAM_PORT_STATUS] = OFPPR_BITS,