2 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include "ofp-print.h"
22 #include <sys/types.h>
23 #include <netinet/in.h>
24 #include <netinet/icmp6.h>
27 #include "byte-order.h"
28 #include "classifier.h"
29 #include "dynamic-string.h"
31 #include "meta-flow.h"
32 #include "multipath.h"
35 #include "ofp-actions.h"
36 #include "ofp-errors.h"
42 #include "unaligned.h"
43 #include "type-props.h"
46 VLOG_DEFINE_THIS_MODULE(ofp_util);
48 /* Rate limit for OpenFlow message parse errors. These always indicate a bug
49 * in the peer and so there's not much point in showing a lot of them. */
50 static struct vlog_rate_limit bad_ofmsg_rl = VLOG_RATE_LIMIT_INIT(1, 5);
52 /* Given the wildcard bit count in the least-significant 6 of 'wcbits', returns
53 * an IP netmask with a 1 in each bit that must match and a 0 in each bit that
56 * The bits in 'wcbits' are in the format used in enum ofp_flow_wildcards: 0
57 * is exact match, 1 ignores the LSB, 2 ignores the 2 least-significant bits,
58 * ..., 32 and higher wildcard the entire field. This is the *opposite* of the
59 * usual convention where e.g. /24 indicates that 8 bits (not 24 bits) are
62 ofputil_wcbits_to_netmask(int wcbits)
65 return wcbits < 32 ? htonl(~((1u << wcbits) - 1)) : 0;
68 /* Given the IP netmask 'netmask', returns the number of bits of the IP address
69 * that it wildcards, that is, the number of 0-bits in 'netmask', a number
70 * between 0 and 32 inclusive.
72 * If 'netmask' is not a CIDR netmask (see ip_is_cidr()), the return value will
73 * still be in the valid range but isn't otherwise meaningful. */
75 ofputil_netmask_to_wcbits(ovs_be32 netmask)
77 return 32 - ip_count_cidr_bits(netmask);
80 /* Converts the OpenFlow 1.0 wildcards in 'ofpfw' (OFPFW10_*) into a
81 * flow_wildcards in 'wc' for use in struct match. It is the caller's
82 * responsibility to handle the special case where the flow match's dl_vlan is
83 * set to OFP_VLAN_NONE. */
85 ofputil_wildcard_from_ofpfw10(uint32_t ofpfw, struct flow_wildcards *wc)
87 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20);
89 /* Initialize most of wc. */
90 flow_wildcards_init_catchall(wc);
92 if (!(ofpfw & OFPFW10_IN_PORT)) {
93 wc->masks.in_port.ofp_port = u16_to_ofp(UINT16_MAX);
96 if (!(ofpfw & OFPFW10_NW_TOS)) {
97 wc->masks.nw_tos |= IP_DSCP_MASK;
100 if (!(ofpfw & OFPFW10_NW_PROTO)) {
101 wc->masks.nw_proto = UINT8_MAX;
103 wc->masks.nw_src = ofputil_wcbits_to_netmask(ofpfw
104 >> OFPFW10_NW_SRC_SHIFT);
105 wc->masks.nw_dst = ofputil_wcbits_to_netmask(ofpfw
106 >> OFPFW10_NW_DST_SHIFT);
108 if (!(ofpfw & OFPFW10_TP_SRC)) {
109 wc->masks.tp_src = htons(UINT16_MAX);
111 if (!(ofpfw & OFPFW10_TP_DST)) {
112 wc->masks.tp_dst = htons(UINT16_MAX);
115 if (!(ofpfw & OFPFW10_DL_SRC)) {
116 memset(wc->masks.dl_src, 0xff, ETH_ADDR_LEN);
118 if (!(ofpfw & OFPFW10_DL_DST)) {
119 memset(wc->masks.dl_dst, 0xff, ETH_ADDR_LEN);
121 if (!(ofpfw & OFPFW10_DL_TYPE)) {
122 wc->masks.dl_type = htons(UINT16_MAX);
126 if (!(ofpfw & OFPFW10_DL_VLAN_PCP)) {
127 wc->masks.vlan_tci |= htons(VLAN_PCP_MASK | VLAN_CFI);
129 if (!(ofpfw & OFPFW10_DL_VLAN)) {
130 wc->masks.vlan_tci |= htons(VLAN_VID_MASK | VLAN_CFI);
134 /* Converts the ofp10_match in 'ofmatch' into a struct match in 'match'. */
136 ofputil_match_from_ofp10_match(const struct ofp10_match *ofmatch,
139 uint32_t ofpfw = ntohl(ofmatch->wildcards) & OFPFW10_ALL;
141 /* Initialize match->wc. */
142 memset(&match->flow, 0, sizeof match->flow);
143 ofputil_wildcard_from_ofpfw10(ofpfw, &match->wc);
145 /* Initialize most of match->flow. */
146 match->flow.nw_src = ofmatch->nw_src;
147 match->flow.nw_dst = ofmatch->nw_dst;
148 match->flow.in_port.ofp_port = u16_to_ofp(ntohs(ofmatch->in_port));
149 match->flow.dl_type = ofputil_dl_type_from_openflow(ofmatch->dl_type);
150 match->flow.tp_src = ofmatch->tp_src;
151 match->flow.tp_dst = ofmatch->tp_dst;
152 memcpy(match->flow.dl_src, ofmatch->dl_src, ETH_ADDR_LEN);
153 memcpy(match->flow.dl_dst, ofmatch->dl_dst, ETH_ADDR_LEN);
154 match->flow.nw_tos = ofmatch->nw_tos & IP_DSCP_MASK;
155 match->flow.nw_proto = ofmatch->nw_proto;
157 /* Translate VLANs. */
158 if (!(ofpfw & OFPFW10_DL_VLAN) &&
159 ofmatch->dl_vlan == htons(OFP10_VLAN_NONE)) {
160 /* Match only packets without 802.1Q header.
162 * When OFPFW10_DL_VLAN_PCP is wildcarded, this is obviously correct.
164 * If OFPFW10_DL_VLAN_PCP is matched, the flow match is contradictory,
165 * because we can't have a specific PCP without an 802.1Q header.
166 * However, older versions of OVS treated this as matching packets
167 * withut an 802.1Q header, so we do here too. */
168 match->flow.vlan_tci = htons(0);
169 match->wc.masks.vlan_tci = htons(0xffff);
171 ovs_be16 vid, pcp, tci;
173 vid = ofmatch->dl_vlan & htons(VLAN_VID_MASK);
174 pcp = htons((ofmatch->dl_vlan_pcp << VLAN_PCP_SHIFT) & VLAN_PCP_MASK);
175 tci = vid | pcp | htons(VLAN_CFI);
176 match->flow.vlan_tci = tci & match->wc.masks.vlan_tci;
180 match_zero_wildcarded_fields(match);
183 /* Convert 'match' into the OpenFlow 1.0 match structure 'ofmatch'. */
185 ofputil_match_to_ofp10_match(const struct match *match,
186 struct ofp10_match *ofmatch)
188 const struct flow_wildcards *wc = &match->wc;
191 /* Figure out most OpenFlow wildcards. */
193 if (!wc->masks.in_port.ofp_port) {
194 ofpfw |= OFPFW10_IN_PORT;
196 if (!wc->masks.dl_type) {
197 ofpfw |= OFPFW10_DL_TYPE;
199 if (!wc->masks.nw_proto) {
200 ofpfw |= OFPFW10_NW_PROTO;
202 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_src)
203 << OFPFW10_NW_SRC_SHIFT);
204 ofpfw |= (ofputil_netmask_to_wcbits(wc->masks.nw_dst)
205 << OFPFW10_NW_DST_SHIFT);
206 if (!(wc->masks.nw_tos & IP_DSCP_MASK)) {
207 ofpfw |= OFPFW10_NW_TOS;
209 if (!wc->masks.tp_src) {
210 ofpfw |= OFPFW10_TP_SRC;
212 if (!wc->masks.tp_dst) {
213 ofpfw |= OFPFW10_TP_DST;
215 if (eth_addr_is_zero(wc->masks.dl_src)) {
216 ofpfw |= OFPFW10_DL_SRC;
218 if (eth_addr_is_zero(wc->masks.dl_dst)) {
219 ofpfw |= OFPFW10_DL_DST;
222 /* Translate VLANs. */
223 ofmatch->dl_vlan = htons(0);
224 ofmatch->dl_vlan_pcp = 0;
225 if (match->wc.masks.vlan_tci == htons(0)) {
226 ofpfw |= OFPFW10_DL_VLAN | OFPFW10_DL_VLAN_PCP;
227 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
228 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
229 ofmatch->dl_vlan = htons(OFP10_VLAN_NONE);
230 ofpfw |= OFPFW10_DL_VLAN_PCP;
232 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
233 ofpfw |= OFPFW10_DL_VLAN;
235 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
238 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
239 ofpfw |= OFPFW10_DL_VLAN_PCP;
241 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
245 /* Compose most of the match structure. */
246 ofmatch->wildcards = htonl(ofpfw);
247 ofmatch->in_port = htons(ofp_to_u16(match->flow.in_port.ofp_port));
248 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
249 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
250 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
251 ofmatch->nw_src = match->flow.nw_src;
252 ofmatch->nw_dst = match->flow.nw_dst;
253 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
254 ofmatch->nw_proto = match->flow.nw_proto;
255 ofmatch->tp_src = match->flow.tp_src;
256 ofmatch->tp_dst = match->flow.tp_dst;
257 memset(ofmatch->pad1, '\0', sizeof ofmatch->pad1);
258 memset(ofmatch->pad2, '\0', sizeof ofmatch->pad2);
262 ofputil_pull_ofp11_match(struct ofpbuf *buf, struct match *match,
263 uint16_t *padded_match_len)
265 struct ofp11_match_header *omh = buf->data;
268 if (buf->size < sizeof *omh) {
269 return OFPERR_OFPBMC_BAD_LEN;
272 match_len = ntohs(omh->length);
274 switch (ntohs(omh->type)) {
275 case OFPMT_STANDARD: {
276 struct ofp11_match *om;
278 if (match_len != sizeof *om || buf->size < sizeof *om) {
279 return OFPERR_OFPBMC_BAD_LEN;
281 om = ofpbuf_pull(buf, sizeof *om);
282 if (padded_match_len) {
283 *padded_match_len = match_len;
285 return ofputil_match_from_ofp11_match(om, match);
289 if (padded_match_len) {
290 *padded_match_len = ROUND_UP(match_len, 8);
292 return oxm_pull_match(buf, match);
295 return OFPERR_OFPBMC_BAD_TYPE;
299 /* Converts the ofp11_match in 'match' into a struct match in 'match. Returns
300 * 0 if successful, otherwise an OFPERR_* value. */
302 ofputil_match_from_ofp11_match(const struct ofp11_match *ofmatch,
305 uint16_t wc = ntohl(ofmatch->wildcards);
306 uint8_t dl_src_mask[ETH_ADDR_LEN];
307 uint8_t dl_dst_mask[ETH_ADDR_LEN];
308 bool ipv4, arp, rarp;
311 match_init_catchall(match);
313 if (!(wc & OFPFW11_IN_PORT)) {
317 error = ofputil_port_from_ofp11(ofmatch->in_port, &ofp_port);
319 return OFPERR_OFPBMC_BAD_VALUE;
321 match_set_in_port(match, ofp_port);
324 for (i = 0; i < ETH_ADDR_LEN; i++) {
325 dl_src_mask[i] = ~ofmatch->dl_src_mask[i];
327 match_set_dl_src_masked(match, ofmatch->dl_src, dl_src_mask);
329 for (i = 0; i < ETH_ADDR_LEN; i++) {
330 dl_dst_mask[i] = ~ofmatch->dl_dst_mask[i];
332 match_set_dl_dst_masked(match, ofmatch->dl_dst, dl_dst_mask);
334 if (!(wc & OFPFW11_DL_VLAN)) {
335 if (ofmatch->dl_vlan == htons(OFPVID11_NONE)) {
336 /* Match only packets without a VLAN tag. */
337 match->flow.vlan_tci = htons(0);
338 match->wc.masks.vlan_tci = htons(UINT16_MAX);
340 if (ofmatch->dl_vlan == htons(OFPVID11_ANY)) {
341 /* Match any packet with a VLAN tag regardless of VID. */
342 match->flow.vlan_tci = htons(VLAN_CFI);
343 match->wc.masks.vlan_tci = htons(VLAN_CFI);
344 } else if (ntohs(ofmatch->dl_vlan) < 4096) {
345 /* Match only packets with the specified VLAN VID. */
346 match->flow.vlan_tci = htons(VLAN_CFI) | ofmatch->dl_vlan;
347 match->wc.masks.vlan_tci = htons(VLAN_CFI | VLAN_VID_MASK);
350 return OFPERR_OFPBMC_BAD_VALUE;
353 if (!(wc & OFPFW11_DL_VLAN_PCP)) {
354 if (ofmatch->dl_vlan_pcp <= 7) {
355 match->flow.vlan_tci |= htons(ofmatch->dl_vlan_pcp
357 match->wc.masks.vlan_tci |= htons(VLAN_PCP_MASK);
360 return OFPERR_OFPBMC_BAD_VALUE;
366 if (!(wc & OFPFW11_DL_TYPE)) {
367 match_set_dl_type(match,
368 ofputil_dl_type_from_openflow(ofmatch->dl_type));
371 ipv4 = match->flow.dl_type == htons(ETH_TYPE_IP);
372 arp = match->flow.dl_type == htons(ETH_TYPE_ARP);
373 rarp = match->flow.dl_type == htons(ETH_TYPE_RARP);
375 if (ipv4 && !(wc & OFPFW11_NW_TOS)) {
376 if (ofmatch->nw_tos & ~IP_DSCP_MASK) {
378 return OFPERR_OFPBMC_BAD_VALUE;
381 match_set_nw_dscp(match, ofmatch->nw_tos);
384 if (ipv4 || arp || rarp) {
385 if (!(wc & OFPFW11_NW_PROTO)) {
386 match_set_nw_proto(match, ofmatch->nw_proto);
388 match_set_nw_src_masked(match, ofmatch->nw_src, ~ofmatch->nw_src_mask);
389 match_set_nw_dst_masked(match, ofmatch->nw_dst, ~ofmatch->nw_dst_mask);
392 #define OFPFW11_TP_ALL (OFPFW11_TP_SRC | OFPFW11_TP_DST)
393 if (ipv4 && (wc & OFPFW11_TP_ALL) != OFPFW11_TP_ALL) {
394 switch (match->flow.nw_proto) {
396 /* "A.2.3 Flow Match Structures" in OF1.1 says:
398 * The tp_src and tp_dst fields will be ignored unless the
399 * network protocol specified is as TCP, UDP or SCTP.
401 * but I'm pretty sure we should support ICMP too, otherwise
402 * that's a regression from OF1.0. */
403 if (!(wc & OFPFW11_TP_SRC)) {
404 uint16_t icmp_type = ntohs(ofmatch->tp_src);
405 if (icmp_type < 0x100) {
406 match_set_icmp_type(match, icmp_type);
408 return OFPERR_OFPBMC_BAD_FIELD;
411 if (!(wc & OFPFW11_TP_DST)) {
412 uint16_t icmp_code = ntohs(ofmatch->tp_dst);
413 if (icmp_code < 0x100) {
414 match_set_icmp_code(match, icmp_code);
416 return OFPERR_OFPBMC_BAD_FIELD;
423 if (!(wc & (OFPFW11_TP_SRC))) {
424 match_set_tp_src(match, ofmatch->tp_src);
426 if (!(wc & (OFPFW11_TP_DST))) {
427 match_set_tp_dst(match, ofmatch->tp_dst);
432 /* We don't support SCTP and it seems that we should tell the
433 * controller, since OF1.1 implementations are supposed to. */
434 return OFPERR_OFPBMC_BAD_FIELD;
437 /* OF1.1 says explicitly to ignore this. */
442 if (eth_type_mpls(match->flow.dl_type)) {
443 enum { OFPFW11_MPLS_ALL = OFPFW11_MPLS_LABEL | OFPFW11_MPLS_TC };
445 if ((wc & OFPFW11_MPLS_ALL) != OFPFW11_MPLS_ALL) {
446 /* MPLS not supported. */
447 return OFPERR_OFPBMC_BAD_TAG;
451 match_set_metadata_masked(match, ofmatch->metadata,
452 ~ofmatch->metadata_mask);
457 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
459 ofputil_match_to_ofp11_match(const struct match *match,
460 struct ofp11_match *ofmatch)
465 memset(ofmatch, 0, sizeof *ofmatch);
466 ofmatch->omh.type = htons(OFPMT_STANDARD);
467 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
469 if (!match->wc.masks.in_port.ofp_port) {
470 wc |= OFPFW11_IN_PORT;
472 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port.ofp_port);
475 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
476 for (i = 0; i < ETH_ADDR_LEN; i++) {
477 ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i];
480 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
481 for (i = 0; i < ETH_ADDR_LEN; i++) {
482 ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i];
485 if (match->wc.masks.vlan_tci == htons(0)) {
486 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
487 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
488 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
489 ofmatch->dl_vlan = htons(OFPVID11_NONE);
490 wc |= OFPFW11_DL_VLAN_PCP;
492 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
493 ofmatch->dl_vlan = htons(OFPVID11_ANY);
495 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
498 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
499 wc |= OFPFW11_DL_VLAN_PCP;
501 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
505 if (!match->wc.masks.dl_type) {
506 wc |= OFPFW11_DL_TYPE;
508 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
511 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
512 wc |= OFPFW11_NW_TOS;
514 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
517 if (!match->wc.masks.nw_proto) {
518 wc |= OFPFW11_NW_PROTO;
520 ofmatch->nw_proto = match->flow.nw_proto;
523 ofmatch->nw_src = match->flow.nw_src;
524 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
525 ofmatch->nw_dst = match->flow.nw_dst;
526 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
528 if (!match->wc.masks.tp_src) {
529 wc |= OFPFW11_TP_SRC;
531 ofmatch->tp_src = match->flow.tp_src;
534 if (!match->wc.masks.tp_dst) {
535 wc |= OFPFW11_TP_DST;
537 ofmatch->tp_dst = match->flow.tp_dst;
540 /* MPLS not supported. */
541 wc |= OFPFW11_MPLS_LABEL;
542 wc |= OFPFW11_MPLS_TC;
544 ofmatch->metadata = match->flow.metadata;
545 ofmatch->metadata_mask = ~match->wc.masks.metadata;
547 ofmatch->wildcards = htonl(wc);
550 /* Given a 'dl_type' value in the format used in struct flow, returns the
551 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
554 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
556 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
557 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
561 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
562 * structure, returns the corresponding 'dl_type' value for use in struct
565 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
567 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
568 ? htons(FLOW_DL_TYPE_NONE)
574 struct proto_abbrev {
575 enum ofputil_protocol protocol;
579 /* Most users really don't care about some of the differences between
580 * protocols. These abbreviations help with that. */
581 static const struct proto_abbrev proto_abbrevs[] = {
582 { OFPUTIL_P_ANY, "any" },
583 { OFPUTIL_P_OF10_STD_ANY, "OpenFlow10" },
584 { OFPUTIL_P_OF10_NXM_ANY, "NXM" },
585 { OFPUTIL_P_ANY_OXM, "OXM" },
587 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
589 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
595 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
597 /* Returns the set of ofputil_protocols that are supported with the given
598 * OpenFlow 'version'. 'version' should normally be an 8-bit OpenFlow version
599 * identifier (e.g. 0x01 for OpenFlow 1.0, 0x02 for OpenFlow 1.1). Returns 0
600 * if 'version' is not supported or outside the valid range. */
601 enum ofputil_protocol
602 ofputil_protocols_from_ofp_version(enum ofp_version version)
606 return OFPUTIL_P_OF10_STD_ANY | OFPUTIL_P_OF10_NXM_ANY;
608 return OFPUTIL_P_OF12_OXM;
610 return OFPUTIL_P_OF13_OXM;
617 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
618 * connection that has negotiated the given 'version'. 'version' should
619 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
620 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
621 * outside the valid range. */
622 enum ofputil_protocol
623 ofputil_protocol_from_ofp_version(enum ofp_version version)
625 return rightmost_1bit(ofputil_protocols_from_ofp_version(version));
628 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
629 * etc.) that corresponds to 'protocol'. */
631 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
634 case OFPUTIL_P_OF10_STD:
635 case OFPUTIL_P_OF10_STD_TID:
636 case OFPUTIL_P_OF10_NXM:
637 case OFPUTIL_P_OF10_NXM_TID:
638 return OFP10_VERSION;
639 case OFPUTIL_P_OF12_OXM:
640 return OFP12_VERSION;
641 case OFPUTIL_P_OF13_OXM:
642 return OFP13_VERSION;
648 /* Returns a bitmap of OpenFlow versions that are supported by at
649 * least one of the 'protocols'. */
651 ofputil_protocols_to_version_bitmap(enum ofputil_protocol protocols)
655 for (; protocols; protocols = zero_rightmost_1bit(protocols)) {
656 enum ofputil_protocol protocol = rightmost_1bit(protocols);
658 bitmap |= 1u << ofputil_protocol_to_ofp_version(protocol);
664 /* Returns the set of protocols that are supported on top of the
665 * OpenFlow versions included in 'bitmap'. */
666 enum ofputil_protocol
667 ofputil_protocols_from_version_bitmap(uint32_t bitmap)
669 enum ofputil_protocol protocols = 0;
671 for (; bitmap; bitmap = zero_rightmost_1bit(bitmap)) {
672 enum ofp_version version = rightmost_1bit_idx(bitmap);
674 protocols |= ofputil_protocols_from_ofp_version(version);
680 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
683 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
685 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
688 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
689 * extension turned on or off if 'enable' is true or false, respectively.
691 * This extension is only useful for protocols whose "standard" version does
692 * not allow specific tables to be modified. In particular, this is true of
693 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
694 * specifies a table ID and so there is no need for such an extension. When
695 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
696 * extension, this function just returns its 'protocol' argument unchanged
697 * regardless of the value of 'enable'. */
698 enum ofputil_protocol
699 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
702 case OFPUTIL_P_OF10_STD:
703 case OFPUTIL_P_OF10_STD_TID:
704 return enable ? OFPUTIL_P_OF10_STD_TID : OFPUTIL_P_OF10_STD;
706 case OFPUTIL_P_OF10_NXM:
707 case OFPUTIL_P_OF10_NXM_TID:
708 return enable ? OFPUTIL_P_OF10_NXM_TID : OFPUTIL_P_OF10_NXM;
710 case OFPUTIL_P_OF12_OXM:
711 return OFPUTIL_P_OF12_OXM;
713 case OFPUTIL_P_OF13_OXM:
714 return OFPUTIL_P_OF13_OXM;
721 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
722 * some extension to a standard protocol version, the return value is the
723 * standard version of that protocol without any extension. If 'protocol' is a
724 * standard protocol version, returns 'protocol' unchanged. */
725 enum ofputil_protocol
726 ofputil_protocol_to_base(enum ofputil_protocol protocol)
728 return ofputil_protocol_set_tid(protocol, false);
731 /* Returns 'new_base' with any extensions taken from 'cur'. */
732 enum ofputil_protocol
733 ofputil_protocol_set_base(enum ofputil_protocol cur,
734 enum ofputil_protocol new_base)
736 bool tid = (cur & OFPUTIL_P_TID) != 0;
739 case OFPUTIL_P_OF10_STD:
740 case OFPUTIL_P_OF10_STD_TID:
741 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_STD, tid);
743 case OFPUTIL_P_OF10_NXM:
744 case OFPUTIL_P_OF10_NXM_TID:
745 return ofputil_protocol_set_tid(OFPUTIL_P_OF10_NXM, tid);
747 case OFPUTIL_P_OF12_OXM:
748 return ofputil_protocol_set_tid(OFPUTIL_P_OF12_OXM, tid);
750 case OFPUTIL_P_OF13_OXM:
751 return ofputil_protocol_set_tid(OFPUTIL_P_OF13_OXM, tid);
758 /* Returns a string form of 'protocol', if a simple form exists (that is, if
759 * 'protocol' is either a single protocol or it is a combination of protocols
760 * that have a single abbreviation). Otherwise, returns NULL. */
762 ofputil_protocol_to_string(enum ofputil_protocol protocol)
764 const struct proto_abbrev *p;
766 /* Use a "switch" statement for single-bit names so that we get a compiler
767 * warning if we forget any. */
769 case OFPUTIL_P_OF10_NXM:
770 return "NXM-table_id";
772 case OFPUTIL_P_OF10_NXM_TID:
773 return "NXM+table_id";
775 case OFPUTIL_P_OF10_STD:
776 return "OpenFlow10-table_id";
778 case OFPUTIL_P_OF10_STD_TID:
779 return "OpenFlow10+table_id";
781 case OFPUTIL_P_OF12_OXM:
782 return "OXM-OpenFlow12";
784 case OFPUTIL_P_OF13_OXM:
785 return "OXM-OpenFlow13";
788 /* Check abbreviations. */
789 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
790 if (protocol == p->protocol) {
798 /* Returns a string that represents 'protocols'. The return value might be a
799 * comma-separated list if 'protocols' doesn't have a simple name. The return
800 * value is "none" if 'protocols' is 0.
802 * The caller must free the returned string (with free()). */
804 ofputil_protocols_to_string(enum ofputil_protocol protocols)
808 ovs_assert(!(protocols & ~OFPUTIL_P_ANY));
809 if (protocols == 0) {
810 return xstrdup("none");
815 const struct proto_abbrev *p;
819 ds_put_char(&s, ',');
822 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
823 if ((protocols & p->protocol) == p->protocol) {
824 ds_put_cstr(&s, p->name);
825 protocols &= ~p->protocol;
830 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
831 enum ofputil_protocol bit = 1u << i;
833 if (protocols & bit) {
834 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
843 return ds_steal_cstr(&s);
846 static enum ofputil_protocol
847 ofputil_protocol_from_string__(const char *s, size_t n)
849 const struct proto_abbrev *p;
852 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
853 enum ofputil_protocol bit = 1u << i;
854 const char *name = ofputil_protocol_to_string(bit);
856 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
861 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
862 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
870 /* Returns the nonempty set of protocols represented by 's', which can be a
871 * single protocol name or abbreviation or a comma-separated list of them.
873 * Aborts the program with an error message if 's' is invalid. */
874 enum ofputil_protocol
875 ofputil_protocols_from_string(const char *s)
877 const char *orig_s = s;
878 enum ofputil_protocol protocols;
882 enum ofputil_protocol p;
891 p = ofputil_protocol_from_string__(s, n);
893 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
901 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
907 ofputil_version_from_string(const char *s)
909 if (!strcasecmp(s, "OpenFlow10")) {
910 return OFP10_VERSION;
912 if (!strcasecmp(s, "OpenFlow11")) {
913 return OFP11_VERSION;
915 if (!strcasecmp(s, "OpenFlow12")) {
916 return OFP12_VERSION;
918 if (!strcasecmp(s, "OpenFlow13")) {
919 return OFP13_VERSION;
925 is_delimiter(unsigned char c)
927 return isspace(c) || c == ',';
931 ofputil_versions_from_string(const char *s)
941 if (is_delimiter(s[i])) {
946 while (s[i + j] && !is_delimiter(s[i + j])) {
949 key = xmemdup0(s + i, j);
950 version = ofputil_version_from_string(key);
952 VLOG_FATAL("Unknown OpenFlow version: \"%s\"", key);
955 bitmap |= 1u << version;
963 ofputil_versions_from_strings(char ** const s, size_t count)
968 int version = ofputil_version_from_string(s[count]);
970 VLOG_WARN("Unknown OpenFlow version: \"%s\"", s[count]);
972 bitmap |= 1u << version;
980 ofputil_version_to_string(enum ofp_version ofp_version)
982 switch (ofp_version) {
997 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
999 switch (packet_in_format) {
1000 case NXPIF_OPENFLOW10:
1009 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
1011 switch (packet_in_format) {
1012 case NXPIF_OPENFLOW10:
1013 return "openflow10";
1022 ofputil_packet_in_format_from_string(const char *s)
1024 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
1025 : !strcmp(s, "nxm") ? NXPIF_NXM
1030 regs_fully_wildcarded(const struct flow_wildcards *wc)
1034 for (i = 0; i < FLOW_N_REGS; i++) {
1035 if (wc->masks.regs[i] != 0) {
1042 /* Returns a bit-mask of ofputil_protocols that can be used for sending 'match'
1043 * to a switch (e.g. to add or remove a flow). Only NXM can handle tunnel IDs,
1044 * registers, or fixing the Ethernet multicast bit. Otherwise, it's better to
1045 * use OpenFlow 1.0 protocol for backward compatibility. */
1046 enum ofputil_protocol
1047 ofputil_usable_protocols(const struct match *match)
1049 const struct flow_wildcards *wc = &match->wc;
1051 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 20);
1053 /* These tunnel params can't be sent in a flow_mod */
1054 if (wc->masks.tunnel.ip_ttl
1055 || wc->masks.tunnel.ip_tos || wc->masks.tunnel.flags) {
1056 return OFPUTIL_P_NONE;
1059 /* skb_mark and skb_priority can't be sent in a flow_mod */
1060 if (wc->masks.skb_mark || wc->masks.skb_priority) {
1061 return OFPUTIL_P_NONE;
1064 /* NXM, OXM, and OF1.1 support bitwise matching on ethernet addresses. */
1065 if (!eth_mask_is_exact(wc->masks.dl_src)
1066 && !eth_addr_is_zero(wc->masks.dl_src)) {
1067 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1068 | OFPUTIL_P_OF13_OXM;
1070 if (!eth_mask_is_exact(wc->masks.dl_dst)
1071 && !eth_addr_is_zero(wc->masks.dl_dst)) {
1072 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1073 | OFPUTIL_P_OF13_OXM;
1076 /* NXM, OXM, and OF1.1+ support matching metadata. */
1077 if (wc->masks.metadata != htonll(0)) {
1078 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1079 | OFPUTIL_P_OF13_OXM;
1082 /* NXM and OXM support matching ARP hardware addresses. */
1083 if (!eth_addr_is_zero(wc->masks.arp_sha) ||
1084 !eth_addr_is_zero(wc->masks.arp_tha)) {
1085 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1086 | OFPUTIL_P_OF13_OXM;
1089 /* NXM and OXM support matching L3 and L4 fields within IPv6.
1091 * (arp_sha, arp_tha, nw_frag, and nw_ttl are covered elsewhere so they
1092 * don't need to be included in this test too.) */
1093 if (match->flow.dl_type == htons(ETH_TYPE_IPV6)
1094 && (!ipv6_mask_is_any(&wc->masks.ipv6_src)
1095 || !ipv6_mask_is_any(&wc->masks.ipv6_dst)
1096 || !ipv6_mask_is_any(&wc->masks.nd_target)
1097 || wc->masks.ipv6_label
1100 || wc->masks.nw_proto
1101 || wc->masks.nw_tos)) {
1102 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1103 | OFPUTIL_P_OF13_OXM;
1106 /* NXM and OXM support matching registers. */
1107 if (!regs_fully_wildcarded(wc)) {
1108 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1109 | OFPUTIL_P_OF13_OXM;
1112 /* NXM and OXM support matching tun_id, tun_src, and tun_dst. */
1113 if (wc->masks.tunnel.tun_id != htonll(0)
1114 || wc->masks.tunnel.ip_src != htonl(0)
1115 || wc->masks.tunnel.ip_dst != htonl(0)) {
1116 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1117 | OFPUTIL_P_OF13_OXM;
1120 /* NXM and OXM support matching fragments. */
1121 if (wc->masks.nw_frag) {
1122 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1123 | OFPUTIL_P_OF13_OXM;
1126 /* NXM and OXM support matching IP ECN bits. */
1127 if (wc->masks.nw_tos & IP_ECN_MASK) {
1128 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1129 | OFPUTIL_P_OF13_OXM;
1132 /* NXM and OXM support matching IP TTL/hop limit. */
1133 if (wc->masks.nw_ttl) {
1134 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1135 | OFPUTIL_P_OF13_OXM;
1138 /* NXM and OXM support non-CIDR IPv4 address masks. */
1139 if (!ip_is_cidr(wc->masks.nw_src) || !ip_is_cidr(wc->masks.nw_dst)) {
1140 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1141 | OFPUTIL_P_OF13_OXM;
1144 /* NXM and OXM support bitwise matching on transport port. */
1145 if ((wc->masks.tp_src && wc->masks.tp_src != htons(UINT16_MAX)) ||
1146 (wc->masks.tp_dst && wc->masks.tp_dst != htons(UINT16_MAX))) {
1147 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1148 | OFPUTIL_P_OF13_OXM;
1151 /* NXM and OF1.1+ support matching MPLS label */
1152 if (wc->masks.mpls_lse & htonl(MPLS_LABEL_MASK)) {
1153 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1154 | OFPUTIL_P_OF13_OXM;
1157 /* NXM and OF1.1+ support matching MPLS TC */
1158 if (wc->masks.mpls_lse & htonl(MPLS_TC_MASK)) {
1159 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1160 | OFPUTIL_P_OF13_OXM;
1163 /* NXM and OF1.3+ support matching MPLS stack flag */
1164 /* Allow for OF1.2 as there doesn't seem to be a
1165 * particularly good reason not to */
1166 if (wc->masks.mpls_lse & htonl(MPLS_BOS_MASK)) {
1167 return OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
1168 | OFPUTIL_P_OF13_OXM;
1171 /* Other formats can express this rule. */
1172 return OFPUTIL_P_ANY;
1176 ofputil_format_version(struct ds *msg, enum ofp_version version)
1178 ds_put_format(msg, "0x%02x", version);
1182 ofputil_format_version_name(struct ds *msg, enum ofp_version version)
1184 ds_put_cstr(msg, ofputil_version_to_string(version));
1188 ofputil_format_version_bitmap__(struct ds *msg, uint32_t bitmap,
1189 void (*format_version)(struct ds *msg,
1193 format_version(msg, raw_ctz(bitmap));
1194 bitmap = zero_rightmost_1bit(bitmap);
1196 ds_put_cstr(msg, ", ");
1202 ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap)
1204 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version);
1208 ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap)
1210 ofputil_format_version_bitmap__(msg, bitmap, ofputil_format_version_name);
1214 ofputil_decode_hello_bitmap(const struct ofp_hello_elem_header *oheh,
1215 uint32_t *allowed_versionsp)
1217 uint16_t bitmap_len = ntohs(oheh->length) - sizeof *oheh;
1218 const ovs_be32 *bitmap = (const ovs_be32 *) (oheh + 1);
1219 uint32_t allowed_versions;
1221 if (!bitmap_len || bitmap_len % sizeof *bitmap) {
1225 /* Only use the first 32-bit element of the bitmap as that is all the
1226 * current implementation supports. Subsequent elements are ignored which
1227 * should have no effect on session negotiation until Open vSwtich supports
1228 * wire-protocol versions greater than 31.
1230 allowed_versions = ntohl(bitmap[0]);
1232 if (allowed_versions & 1) {
1233 /* There's no OpenFlow version 0. */
1234 VLOG_WARN_RL(&bad_ofmsg_rl, "peer claims to support invalid OpenFlow "
1236 allowed_versions &= ~1u;
1239 if (!allowed_versions) {
1240 VLOG_WARN_RL(&bad_ofmsg_rl, "peer does not support any OpenFlow "
1241 "version (between 0x01 and 0x1f)");
1245 *allowed_versionsp = allowed_versions;
1250 version_bitmap_from_version(uint8_t ofp_version)
1252 return ((ofp_version < 32 ? 1u << ofp_version : 0) - 1) << 1;
1255 /* Decodes OpenFlow OFPT_HELLO message 'oh', storing into '*allowed_versions'
1256 * the set of OpenFlow versions for which 'oh' announces support.
1258 * Because of how OpenFlow defines OFPT_HELLO messages, this function is always
1259 * successful, and thus '*allowed_versions' is always initialized. However, it
1260 * returns false if 'oh' contains some data that could not be fully understood,
1261 * true if 'oh' was completely parsed. */
1263 ofputil_decode_hello(const struct ofp_header *oh, uint32_t *allowed_versions)
1268 ofpbuf_use_const(&msg, oh, ntohs(oh->length));
1269 ofpbuf_pull(&msg, sizeof *oh);
1271 *allowed_versions = version_bitmap_from_version(oh->version);
1273 const struct ofp_hello_elem_header *oheh;
1276 if (msg.size < sizeof *oheh) {
1281 len = ntohs(oheh->length);
1282 if (len < sizeof *oheh || !ofpbuf_try_pull(&msg, ROUND_UP(len, 8))) {
1286 if (oheh->type != htons(OFPHET_VERSIONBITMAP)
1287 || !ofputil_decode_hello_bitmap(oheh, allowed_versions)) {
1295 /* Returns true if 'allowed_versions' needs to be accompanied by a version
1296 * bitmap to be correctly expressed in an OFPT_HELLO message. */
1298 should_send_version_bitmap(uint32_t allowed_versions)
1300 return !is_pow2((allowed_versions >> 1) + 1);
1303 /* Create an OFPT_HELLO message that expresses support for the OpenFlow
1304 * versions in the 'allowed_versions' bitmaps and returns the message. */
1306 ofputil_encode_hello(uint32_t allowed_versions)
1308 enum ofp_version ofp_version;
1311 ofp_version = leftmost_1bit_idx(allowed_versions);
1312 msg = ofpraw_alloc(OFPRAW_OFPT_HELLO, ofp_version, 0);
1314 if (should_send_version_bitmap(allowed_versions)) {
1315 struct ofp_hello_elem_header *oheh;
1318 map_len = sizeof allowed_versions;
1319 oheh = ofpbuf_put_zeros(msg, ROUND_UP(map_len + sizeof *oheh, 8));
1320 oheh->type = htons(OFPHET_VERSIONBITMAP);
1321 oheh->length = htons(map_len + sizeof *oheh);
1322 *(ovs_be32 *)(oheh + 1) = htonl(allowed_versions);
1324 ofpmsg_update_length(msg);
1330 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
1331 * protocol is 'current', at least partly transitions the protocol to 'want'.
1332 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1333 * connection if the switch processes the returned message correctly. (If
1334 * '*next != want' then the caller will have to iterate.)
1336 * If 'current == want', or if it is not possible to transition from 'current'
1337 * to 'want' (because, for example, 'current' and 'want' use different OpenFlow
1338 * protocol versions), returns NULL and stores 'current' in '*next'. */
1340 ofputil_encode_set_protocol(enum ofputil_protocol current,
1341 enum ofputil_protocol want,
1342 enum ofputil_protocol *next)
1344 enum ofp_version cur_version, want_version;
1345 enum ofputil_protocol cur_base, want_base;
1346 bool cur_tid, want_tid;
1348 cur_version = ofputil_protocol_to_ofp_version(current);
1349 want_version = ofputil_protocol_to_ofp_version(want);
1350 if (cur_version != want_version) {
1355 cur_base = ofputil_protocol_to_base(current);
1356 want_base = ofputil_protocol_to_base(want);
1357 if (cur_base != want_base) {
1358 *next = ofputil_protocol_set_base(current, want_base);
1360 switch (want_base) {
1361 case OFPUTIL_P_OF10_NXM:
1362 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1364 case OFPUTIL_P_OF10_STD:
1365 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1367 case OFPUTIL_P_OF12_OXM:
1368 case OFPUTIL_P_OF13_OXM:
1369 /* There are only one of each OpenFlow 1.2+ protocols and we already
1370 * verified above that we're not trying to change versions. */
1373 case OFPUTIL_P_OF10_STD_TID:
1374 case OFPUTIL_P_OF10_NXM_TID:
1379 cur_tid = (current & OFPUTIL_P_TID) != 0;
1380 want_tid = (want & OFPUTIL_P_TID) != 0;
1381 if (cur_tid != want_tid) {
1382 *next = ofputil_protocol_set_tid(current, want_tid);
1383 return ofputil_make_flow_mod_table_id(want_tid);
1386 ovs_assert(current == want);
1392 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1393 * format to 'nxff'. */
1395 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1397 struct nx_set_flow_format *sff;
1400 ovs_assert(ofputil_nx_flow_format_is_valid(nxff));
1402 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1403 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1404 sff->format = htonl(nxff);
1409 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1411 enum ofputil_protocol
1412 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1414 switch (flow_format) {
1415 case NXFF_OPENFLOW10:
1416 return OFPUTIL_P_OF10_STD;
1419 return OFPUTIL_P_OF10_NXM;
1426 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1428 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1430 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1433 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1436 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1438 switch (flow_format) {
1439 case NXFF_OPENFLOW10:
1440 return "openflow10";
1449 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1450 enum nx_packet_in_format packet_in_format)
1452 struct nx_set_packet_in_format *spif;
1455 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1456 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1457 spif->format = htonl(packet_in_format);
1462 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1463 * extension on or off (according to 'flow_mod_table_id'). */
1465 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1467 struct nx_flow_mod_table_id *nfmti;
1470 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1471 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1472 nfmti->set = flow_mod_table_id;
1476 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1477 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1480 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1481 * The caller must initialize 'ofpacts' and retains ownership of it.
1482 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1484 * Does not validate the flow_mod actions. The caller should do that, with
1485 * ofpacts_check(). */
1487 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1488 const struct ofp_header *oh,
1489 enum ofputil_protocol protocol,
1490 struct ofpbuf *ofpacts)
1496 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1497 raw = ofpraw_pull_assert(&b);
1498 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1499 /* Standard OpenFlow 1.1 flow_mod. */
1500 const struct ofp11_flow_mod *ofm;
1503 ofm = ofpbuf_pull(&b, sizeof *ofm);
1505 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1510 error = ofpacts_pull_openflow11_instructions(&b, b.size, ofpacts);
1515 /* Translate the message. */
1516 fm->priority = ntohs(ofm->priority);
1517 if (ofm->command == OFPFC_ADD) {
1518 fm->cookie = htonll(0);
1519 fm->cookie_mask = htonll(0);
1520 fm->new_cookie = ofm->cookie;
1522 fm->cookie = ofm->cookie;
1523 fm->cookie_mask = ofm->cookie_mask;
1524 fm->new_cookie = htonll(UINT64_MAX);
1526 fm->command = ofm->command;
1527 fm->table_id = ofm->table_id;
1528 fm->idle_timeout = ntohs(ofm->idle_timeout);
1529 fm->hard_timeout = ntohs(ofm->hard_timeout);
1530 fm->buffer_id = ntohl(ofm->buffer_id);
1531 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1535 if ((ofm->command == OFPFC_DELETE
1536 || ofm->command == OFPFC_DELETE_STRICT)
1537 && ofm->out_group != htonl(OFPG_ANY)) {
1538 return OFPERR_OFPFMFC_UNKNOWN;
1540 fm->flags = ntohs(ofm->flags);
1542 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1543 /* Standard OpenFlow 1.0 flow_mod. */
1544 const struct ofp10_flow_mod *ofm;
1547 /* Get the ofp10_flow_mod. */
1548 ofm = ofpbuf_pull(&b, sizeof *ofm);
1550 /* Translate the rule. */
1551 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1552 ofputil_normalize_match(&fm->match);
1554 /* Now get the actions. */
1555 error = ofpacts_pull_openflow10(&b, b.size, ofpacts);
1560 /* OpenFlow 1.0 says that exact-match rules have to have the
1561 * highest possible priority. */
1562 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1563 ? ntohs(ofm->priority)
1566 /* Translate the message. */
1567 command = ntohs(ofm->command);
1568 fm->cookie = htonll(0);
1569 fm->cookie_mask = htonll(0);
1570 fm->new_cookie = ofm->cookie;
1571 fm->idle_timeout = ntohs(ofm->idle_timeout);
1572 fm->hard_timeout = ntohs(ofm->hard_timeout);
1573 fm->buffer_id = ntohl(ofm->buffer_id);
1574 fm->out_port = u16_to_ofp(ntohs(ofm->out_port));
1575 fm->flags = ntohs(ofm->flags);
1576 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1577 /* Nicira extended flow_mod. */
1578 const struct nx_flow_mod *nfm;
1581 /* Dissect the message. */
1582 nfm = ofpbuf_pull(&b, sizeof *nfm);
1583 error = nx_pull_match(&b, ntohs(nfm->match_len),
1584 &fm->match, &fm->cookie, &fm->cookie_mask);
1588 error = ofpacts_pull_openflow10(&b, b.size, ofpacts);
1593 /* Translate the message. */
1594 command = ntohs(nfm->command);
1595 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1596 /* Flow additions may only set a new cookie, not match an
1597 * existing cookie. */
1598 return OFPERR_NXBRC_NXM_INVALID;
1600 fm->priority = ntohs(nfm->priority);
1601 fm->new_cookie = nfm->cookie;
1602 fm->idle_timeout = ntohs(nfm->idle_timeout);
1603 fm->hard_timeout = ntohs(nfm->hard_timeout);
1604 fm->buffer_id = ntohl(nfm->buffer_id);
1605 fm->out_port = u16_to_ofp(ntohs(nfm->out_port));
1606 fm->flags = ntohs(nfm->flags);
1611 if (fm->flags & OFPFF10_EMERG) {
1612 /* We do not support the OpenFlow 1.0 emergency flow cache, which
1613 * is not required in OpenFlow 1.0.1 and removed from OpenFlow 1.1.
1615 * OpenFlow 1.0 specifies the error code to use when idle_timeout
1616 * or hard_timeout is nonzero. Otherwise, there is no good error
1617 * code, so just state that the flow table is full. */
1618 return (fm->hard_timeout || fm->idle_timeout
1619 ? OFPERR_OFPFMFC_BAD_EMERG_TIMEOUT
1620 : OFPERR_OFPFMFC_TABLE_FULL);
1623 if (protocol & OFPUTIL_P_TID) {
1624 fm->command = command & 0xff;
1625 fm->table_id = command >> 8;
1627 fm->command = command;
1628 fm->table_id = 0xff;
1632 fm->ofpacts = ofpacts->data;
1633 fm->ofpacts_len = ofpacts->size;
1639 ofputil_pull_bands(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1640 struct ofpbuf *bands)
1642 const struct ofp13_meter_band_header *ombh;
1643 struct ofputil_meter_band *mb;
1646 ombh = ofpbuf_try_pull(msg, len);
1648 return OFPERR_OFPBRC_BAD_LEN;
1651 while (len >= sizeof (struct ofp13_meter_band_drop)) {
1652 size_t ombh_len = ntohs(ombh->len);
1653 /* All supported band types have the same length. */
1654 if (ombh_len != sizeof (struct ofp13_meter_band_drop)) {
1655 return OFPERR_OFPBRC_BAD_LEN;
1657 mb = ofpbuf_put_uninit(bands, sizeof *mb);
1658 mb->type = ntohs(ombh->type);
1659 mb->rate = ntohl(ombh->rate);
1660 mb->burst_size = ntohl(ombh->burst_size);
1661 mb->prec_level = (mb->type == OFPMBT13_DSCP_REMARK) ?
1662 ((struct ofp13_meter_band_dscp_remark *)ombh)->prec_level : 0;
1665 ombh = (struct ofp13_meter_band_header *)(((char *)ombh) + ombh_len);
1668 return OFPERR_OFPBRC_BAD_LEN;
1675 ofputil_decode_meter_mod(const struct ofp_header *oh,
1676 struct ofputil_meter_mod *mm,
1677 struct ofpbuf *bands)
1679 const struct ofp13_meter_mod *omm;
1682 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1683 ofpraw_pull_assert(&b);
1684 omm = ofpbuf_pull(&b, sizeof *omm);
1686 /* Translate the message. */
1687 mm->command = ntohs(omm->command);
1688 mm->meter.meter_id = ntohl(omm->meter_id);
1690 if (mm->command == OFPMC13_DELETE) {
1691 mm->meter.flags = 0;
1692 mm->meter.n_bands = 0;
1693 mm->meter.bands = NULL;
1697 mm->meter.flags = ntohs(omm->flags);
1698 mm->meter.bands = bands->data;
1700 error = ofputil_pull_bands(&b, b.size, &mm->meter.n_bands, bands);
1709 ofputil_decode_meter_request(const struct ofp_header *oh, uint32_t *meter_id)
1711 const struct ofp13_meter_multipart_request *omr = ofpmsg_body(oh);
1712 *meter_id = ntohl(omr->meter_id);
1716 ofputil_encode_meter_request(enum ofp_version ofp_version,
1717 enum ofputil_meter_request_type type,
1725 case OFPUTIL_METER_CONFIG:
1726 raw = OFPRAW_OFPST13_METER_CONFIG_REQUEST;
1728 case OFPUTIL_METER_STATS:
1729 raw = OFPRAW_OFPST13_METER_REQUEST;
1732 case OFPUTIL_METER_FEATURES:
1733 raw = OFPRAW_OFPST13_METER_FEATURES_REQUEST;
1737 msg = ofpraw_alloc(raw, ofp_version, 0);
1739 if (type != OFPUTIL_METER_FEATURES) {
1740 struct ofp13_meter_multipart_request *omr;
1741 omr = ofpbuf_put_zeros(msg, sizeof *omr);
1742 omr->meter_id = htonl(meter_id);
1748 ofputil_put_bands(uint16_t n_bands, const struct ofputil_meter_band *mb,
1753 for (n = 0; n < n_bands; ++n) {
1754 /* Currently all band types have same size. */
1755 struct ofp13_meter_band_dscp_remark *ombh;
1756 size_t ombh_len = sizeof *ombh;
1758 ombh = ofpbuf_put_zeros(msg, ombh_len);
1760 ombh->type = htons(mb->type);
1761 ombh->len = htons(ombh_len);
1762 ombh->rate = htonl(mb->rate);
1763 ombh->burst_size = htonl(mb->burst_size);
1764 ombh->prec_level = mb->prec_level;
1770 /* Encode a meter stat for 'mc' and append it to 'replies'. */
1772 ofputil_append_meter_config(struct list *replies,
1773 const struct ofputil_meter_config *mc)
1775 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
1776 size_t start_ofs = msg->size;
1777 struct ofp13_meter_config *reply = ofpbuf_put_uninit(msg, sizeof *reply);
1778 reply->flags = htons(mc->flags);
1779 reply->meter_id = htonl(mc->meter_id);
1781 ofputil_put_bands(mc->n_bands, mc->bands, msg);
1783 reply->length = htons(msg->size - start_ofs);
1785 ofpmp_postappend(replies, start_ofs);
1788 /* Encode a meter stat for 'ms' and append it to 'replies'. */
1790 ofputil_append_meter_stats(struct list *replies,
1791 const struct ofputil_meter_stats *ms)
1793 struct ofp13_meter_stats *reply;
1797 len = sizeof *reply + ms->n_bands * sizeof(struct ofp13_meter_band_stats);
1798 reply = ofpmp_append(replies, len);
1800 reply->meter_id = htonl(ms->meter_id);
1801 reply->len = htons(len);
1802 memset(reply->pad, 0, sizeof reply->pad);
1803 reply->flow_count = htonl(ms->flow_count);
1804 reply->packet_in_count = htonll(ms->packet_in_count);
1805 reply->byte_in_count = htonll(ms->byte_in_count);
1806 reply->duration_sec = htonl(ms->duration_sec);
1807 reply->duration_nsec = htonl(ms->duration_nsec);
1809 for (n = 0; n < ms->n_bands; ++n) {
1810 const struct ofputil_meter_band_stats *src = &ms->bands[n];
1811 struct ofp13_meter_band_stats *dst = &reply->band_stats[n];
1813 dst->packet_band_count = htonll(src->packet_count);
1814 dst->byte_band_count = htonll(src->byte_count);
1818 /* Converts an OFPMP_METER_CONFIG reply in 'msg' into an abstract
1819 * ofputil_meter_config in 'mc', with mc->bands pointing to bands decoded into
1820 * 'bands'. The caller must have initialized 'bands' and retains ownership of
1821 * it across the call.
1823 * Multiple OFPST13_METER_CONFIG replies can be packed into a single OpenFlow
1824 * message. Calling this function multiple times for a single 'msg' iterates
1825 * through the replies. 'bands' is cleared for each reply.
1827 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1828 * otherwise a positive errno value. */
1830 ofputil_decode_meter_config(struct ofpbuf *msg,
1831 struct ofputil_meter_config *mc,
1832 struct ofpbuf *bands)
1834 const struct ofp13_meter_config *omc;
1837 /* Pull OpenFlow headers for the first call. */
1839 ofpraw_pull_assert(msg);
1846 omc = ofpbuf_try_pull(msg, sizeof *omc);
1848 VLOG_WARN_RL(&bad_ofmsg_rl,
1849 "OFPMP_METER_CONFIG reply has %zu leftover bytes at end",
1851 return OFPERR_OFPBRC_BAD_LEN;
1854 ofpbuf_clear(bands);
1855 err = ofputil_pull_bands(msg, ntohs(omc->length) - sizeof *omc,
1856 &mc->n_bands, bands);
1860 mc->meter_id = ntohl(omc->meter_id);
1861 mc->flags = ntohs(omc->flags);
1862 mc->bands = bands->data;
1868 ofputil_pull_band_stats(struct ofpbuf *msg, size_t len, uint16_t *n_bands,
1869 struct ofpbuf *bands)
1871 const struct ofp13_meter_band_stats *ombs;
1872 struct ofputil_meter_band_stats *mbs;
1875 ombs = ofpbuf_try_pull(msg, len);
1877 return OFPERR_OFPBRC_BAD_LEN;
1880 n = len / sizeof *ombs;
1881 if (len != n * sizeof *ombs) {
1882 return OFPERR_OFPBRC_BAD_LEN;
1885 mbs = ofpbuf_put_uninit(bands, len);
1887 for (i = 0; i < n; ++i) {
1888 mbs[i].packet_count = ntohll(ombs[i].packet_band_count);
1889 mbs[i].byte_count = ntohll(ombs[i].byte_band_count);
1895 /* Converts an OFPMP_METER reply in 'msg' into an abstract
1896 * ofputil_meter_stats in 'ms', with ms->bands pointing to band stats
1897 * decoded into 'bands'.
1899 * Multiple OFPMP_METER replies can be packed into a single OpenFlow
1900 * message. Calling this function multiple times for a single 'msg' iterates
1901 * through the replies. 'bands' is cleared for each reply.
1903 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1904 * otherwise a positive errno value. */
1906 ofputil_decode_meter_stats(struct ofpbuf *msg,
1907 struct ofputil_meter_stats *ms,
1908 struct ofpbuf *bands)
1910 const struct ofp13_meter_stats *oms;
1913 /* Pull OpenFlow headers for the first call. */
1915 ofpraw_pull_assert(msg);
1922 oms = ofpbuf_try_pull(msg, sizeof *oms);
1924 VLOG_WARN_RL(&bad_ofmsg_rl,
1925 "OFPMP_METER reply has %zu leftover bytes at end",
1927 return OFPERR_OFPBRC_BAD_LEN;
1930 ofpbuf_clear(bands);
1931 err = ofputil_pull_band_stats(msg, ntohs(oms->len) - sizeof *oms,
1932 &ms->n_bands, bands);
1936 ms->meter_id = ntohl(oms->meter_id);
1937 ms->flow_count = ntohl(oms->flow_count);
1938 ms->packet_in_count = ntohll(oms->packet_in_count);
1939 ms->byte_in_count = ntohll(oms->byte_in_count);
1940 ms->duration_sec = ntohl(oms->duration_sec);
1941 ms->duration_nsec = ntohl(oms->duration_nsec);
1942 ms->bands = bands->data;
1948 ofputil_decode_meter_features(const struct ofp_header *oh,
1949 struct ofputil_meter_features *mf)
1951 const struct ofp13_meter_features *omf = ofpmsg_body(oh);
1953 mf->max_meters = ntohl(omf->max_meter);
1954 mf->band_types = ntohl(omf->band_types);
1955 mf->capabilities = ntohl(omf->capabilities);
1956 mf->max_bands = omf->max_bands;
1957 mf->max_color = omf->max_color;
1961 ofputil_encode_meter_features_reply(const struct ofputil_meter_features *mf,
1962 const struct ofp_header *request)
1964 struct ofpbuf *reply;
1965 struct ofp13_meter_features *omf;
1967 reply = ofpraw_alloc_stats_reply(request, 0);
1968 omf = ofpbuf_put_zeros(reply, sizeof *omf);
1970 omf->max_meter = htonl(mf->max_meters);
1971 omf->band_types = htonl(mf->band_types);
1972 omf->capabilities = htonl(mf->capabilities);
1973 omf->max_bands = mf->max_bands;
1974 omf->max_color = mf->max_color;
1980 ofputil_encode_meter_mod(enum ofp_version ofp_version,
1981 const struct ofputil_meter_mod *mm)
1985 struct ofp13_meter_mod *omm;
1987 msg = ofpraw_alloc(OFPRAW_OFPT13_METER_MOD, ofp_version,
1988 NXM_TYPICAL_LEN + mm->meter.n_bands * 16);
1989 omm = ofpbuf_put_zeros(msg, sizeof *omm);
1990 omm->command = htons(mm->command);
1991 if (mm->command != OFPMC13_DELETE) {
1992 omm->flags = htons(mm->meter.flags);
1994 omm->meter_id = htonl(mm->meter.meter_id);
1996 ofputil_put_bands(mm->meter.n_bands, mm->meter.bands, msg);
1998 ofpmsg_update_length(msg);
2003 ofputil_tid_command(const struct ofputil_flow_mod *fm,
2004 enum ofputil_protocol protocol)
2006 return htons(protocol & OFPUTIL_P_TID
2007 ? (fm->command & 0xff) | (fm->table_id << 8)
2011 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
2012 * 'protocol' and returns the message. */
2014 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
2015 enum ofputil_protocol protocol)
2020 case OFPUTIL_P_OF12_OXM:
2021 case OFPUTIL_P_OF13_OXM: {
2022 struct ofp11_flow_mod *ofm;
2024 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD,
2025 ofputil_protocol_to_ofp_version(protocol),
2026 NXM_TYPICAL_LEN + fm->ofpacts_len);
2027 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2028 if (fm->command == OFPFC_ADD) {
2029 ofm->cookie = fm->new_cookie;
2031 ofm->cookie = fm->cookie;
2033 ofm->cookie_mask = fm->cookie_mask;
2034 ofm->table_id = fm->table_id;
2035 ofm->command = fm->command;
2036 ofm->idle_timeout = htons(fm->idle_timeout);
2037 ofm->hard_timeout = htons(fm->hard_timeout);
2038 ofm->priority = htons(fm->priority);
2039 ofm->buffer_id = htonl(fm->buffer_id);
2040 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
2041 ofm->out_group = htonl(OFPG11_ANY);
2042 ofm->flags = htons(fm->flags);
2043 oxm_put_match(msg, &fm->match);
2044 ofpacts_put_openflow11_instructions(fm->ofpacts, fm->ofpacts_len, msg);
2048 case OFPUTIL_P_OF10_STD:
2049 case OFPUTIL_P_OF10_STD_TID: {
2050 struct ofp10_flow_mod *ofm;
2052 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
2054 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
2055 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
2056 ofm->cookie = fm->new_cookie;
2057 ofm->command = ofputil_tid_command(fm, protocol);
2058 ofm->idle_timeout = htons(fm->idle_timeout);
2059 ofm->hard_timeout = htons(fm->hard_timeout);
2060 ofm->priority = htons(fm->priority);
2061 ofm->buffer_id = htonl(fm->buffer_id);
2062 ofm->out_port = htons(ofp_to_u16(fm->out_port));
2063 ofm->flags = htons(fm->flags);
2064 ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg);
2068 case OFPUTIL_P_OF10_NXM:
2069 case OFPUTIL_P_OF10_NXM_TID: {
2070 struct nx_flow_mod *nfm;
2073 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
2074 NXM_TYPICAL_LEN + fm->ofpacts_len);
2075 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
2076 nfm->command = ofputil_tid_command(fm, protocol);
2077 nfm->cookie = fm->new_cookie;
2078 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
2080 nfm->idle_timeout = htons(fm->idle_timeout);
2081 nfm->hard_timeout = htons(fm->hard_timeout);
2082 nfm->priority = htons(fm->priority);
2083 nfm->buffer_id = htonl(fm->buffer_id);
2084 nfm->out_port = htons(ofp_to_u16(fm->out_port));
2085 nfm->flags = htons(fm->flags);
2086 nfm->match_len = htons(match_len);
2087 ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg);
2095 ofpmsg_update_length(msg);
2099 /* Returns a bitmask with a 1-bit for each protocol that could be used to
2100 * send all of the 'n_fm's flow table modification requests in 'fms', and a
2101 * 0-bit for each protocol that is inadequate.
2103 * (The return value will have at least one 1-bit.) */
2104 enum ofputil_protocol
2105 ofputil_flow_mod_usable_protocols(const struct ofputil_flow_mod *fms,
2108 enum ofputil_protocol usable_protocols;
2111 usable_protocols = OFPUTIL_P_ANY;
2112 for (i = 0; i < n_fms; i++) {
2113 const struct ofputil_flow_mod *fm = &fms[i];
2115 usable_protocols &= ofputil_usable_protocols(&fm->match);
2116 if (fm->table_id != 0xff) {
2117 usable_protocols &= OFPUTIL_P_TID;
2120 /* Matching of the cookie is only supported through NXM or OF1.1+. */
2121 if (fm->cookie_mask != htonll(0)) {
2122 usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
2123 | OFPUTIL_P_OF13_OXM;
2127 return usable_protocols;
2131 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
2132 const struct ofp10_flow_stats_request *ofsr,
2135 fsr->aggregate = aggregate;
2136 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
2137 fsr->out_port = u16_to_ofp(ntohs(ofsr->out_port));
2138 fsr->table_id = ofsr->table_id;
2139 fsr->cookie = fsr->cookie_mask = htonll(0);
2145 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
2146 struct ofpbuf *b, bool aggregate)
2148 const struct ofp11_flow_stats_request *ofsr;
2151 ofsr = ofpbuf_pull(b, sizeof *ofsr);
2152 fsr->aggregate = aggregate;
2153 fsr->table_id = ofsr->table_id;
2154 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
2158 if (ofsr->out_group != htonl(OFPG11_ANY)) {
2159 return OFPERR_OFPFMFC_UNKNOWN;
2161 fsr->cookie = ofsr->cookie;
2162 fsr->cookie_mask = ofsr->cookie_mask;
2163 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
2172 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
2173 struct ofpbuf *b, bool aggregate)
2175 const struct nx_flow_stats_request *nfsr;
2178 nfsr = ofpbuf_pull(b, sizeof *nfsr);
2179 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
2180 &fsr->cookie, &fsr->cookie_mask);
2185 return OFPERR_OFPBRC_BAD_LEN;
2188 fsr->aggregate = aggregate;
2189 fsr->out_port = u16_to_ofp(ntohs(nfsr->out_port));
2190 fsr->table_id = nfsr->table_id;
2195 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
2196 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
2197 * successful, otherwise an OpenFlow error code. */
2199 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
2200 const struct ofp_header *oh)
2205 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2206 raw = ofpraw_pull_assert(&b);
2207 switch ((int) raw) {
2208 case OFPRAW_OFPST10_FLOW_REQUEST:
2209 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
2211 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
2212 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
2214 case OFPRAW_OFPST11_FLOW_REQUEST:
2215 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
2217 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
2218 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
2220 case OFPRAW_NXST_FLOW_REQUEST:
2221 return ofputil_decode_nxst_flow_request(fsr, &b, false);
2223 case OFPRAW_NXST_AGGREGATE_REQUEST:
2224 return ofputil_decode_nxst_flow_request(fsr, &b, true);
2227 /* Hey, the caller lied. */
2232 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
2233 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
2234 * 'protocol', and returns the message. */
2236 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
2237 enum ofputil_protocol protocol)
2243 case OFPUTIL_P_OF12_OXM:
2244 case OFPUTIL_P_OF13_OXM: {
2245 struct ofp11_flow_stats_request *ofsr;
2247 raw = (fsr->aggregate
2248 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
2249 : OFPRAW_OFPST11_FLOW_REQUEST);
2250 msg = ofpraw_alloc(raw, ofputil_protocol_to_ofp_version(protocol),
2252 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2253 ofsr->table_id = fsr->table_id;
2254 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
2255 ofsr->out_group = htonl(OFPG11_ANY);
2256 ofsr->cookie = fsr->cookie;
2257 ofsr->cookie_mask = fsr->cookie_mask;
2258 oxm_put_match(msg, &fsr->match);
2262 case OFPUTIL_P_OF10_STD:
2263 case OFPUTIL_P_OF10_STD_TID: {
2264 struct ofp10_flow_stats_request *ofsr;
2266 raw = (fsr->aggregate
2267 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
2268 : OFPRAW_OFPST10_FLOW_REQUEST);
2269 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
2270 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
2271 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
2272 ofsr->table_id = fsr->table_id;
2273 ofsr->out_port = htons(ofp_to_u16(fsr->out_port));
2277 case OFPUTIL_P_OF10_NXM:
2278 case OFPUTIL_P_OF10_NXM_TID: {
2279 struct nx_flow_stats_request *nfsr;
2282 raw = (fsr->aggregate
2283 ? OFPRAW_NXST_AGGREGATE_REQUEST
2284 : OFPRAW_NXST_FLOW_REQUEST);
2285 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
2286 ofpbuf_put_zeros(msg, sizeof *nfsr);
2287 match_len = nx_put_match(msg, &fsr->match,
2288 fsr->cookie, fsr->cookie_mask);
2291 nfsr->out_port = htons(ofp_to_u16(fsr->out_port));
2292 nfsr->match_len = htons(match_len);
2293 nfsr->table_id = fsr->table_id;
2304 /* Returns a bitmask with a 1-bit for each protocol that could be used to
2305 * accurately encode 'fsr', and a 0-bit for each protocol that is inadequate.
2307 * (The return value will have at least one 1-bit.) */
2308 enum ofputil_protocol
2309 ofputil_flow_stats_request_usable_protocols(
2310 const struct ofputil_flow_stats_request *fsr)
2312 enum ofputil_protocol usable_protocols;
2314 usable_protocols = ofputil_usable_protocols(&fsr->match);
2315 if (fsr->cookie_mask != htonll(0)) {
2316 usable_protocols &= OFPUTIL_P_OF10_NXM_ANY | OFPUTIL_P_OF12_OXM
2317 | OFPUTIL_P_OF13_OXM;
2319 return usable_protocols;
2322 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
2323 * ofputil_flow_stats in 'fs'.
2325 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
2326 * OpenFlow message. Calling this function multiple times for a single 'msg'
2327 * iterates through the replies. The caller must initially leave 'msg''s layer
2328 * pointers null and not modify them between calls.
2330 * Most switches don't send the values needed to populate fs->idle_age and
2331 * fs->hard_age, so those members will usually be set to 0. If the switch from
2332 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
2333 * 'flow_age_extension' as true so that the contents of 'msg' determine the
2334 * 'idle_age' and 'hard_age' members in 'fs'.
2336 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
2337 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
2338 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
2340 * Returns 0 if successful, EOF if no replies were left in this 'msg',
2341 * otherwise a positive errno value. */
2343 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
2345 bool flow_age_extension,
2346 struct ofpbuf *ofpacts)
2352 ? ofpraw_decode(&raw, msg->l2)
2353 : ofpraw_pull(&raw, msg));
2360 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY
2361 || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2362 const struct ofp11_flow_stats *ofs;
2364 uint16_t padded_match_len;
2366 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2368 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover "
2369 "bytes at end", msg->size);
2373 length = ntohs(ofs->length);
2374 if (length < sizeof *ofs) {
2375 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2376 "length %zu", length);
2380 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
2381 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
2385 if (ofpacts_pull_openflow11_instructions(msg, length - sizeof *ofs -
2386 padded_match_len, ofpacts)) {
2387 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
2391 fs->priority = ntohs(ofs->priority);
2392 fs->table_id = ofs->table_id;
2393 fs->duration_sec = ntohl(ofs->duration_sec);
2394 fs->duration_nsec = ntohl(ofs->duration_nsec);
2395 fs->idle_timeout = ntohs(ofs->idle_timeout);
2396 fs->hard_timeout = ntohs(ofs->hard_timeout);
2397 fs->flags = (raw == OFPRAW_OFPST13_FLOW_REPLY) ? ntohs(ofs->flags) : 0;
2400 fs->cookie = ofs->cookie;
2401 fs->packet_count = ntohll(ofs->packet_count);
2402 fs->byte_count = ntohll(ofs->byte_count);
2403 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2404 const struct ofp10_flow_stats *ofs;
2407 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
2409 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover "
2410 "bytes at end", msg->size);
2414 length = ntohs(ofs->length);
2415 if (length < sizeof *ofs) {
2416 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
2417 "length %zu", length);
2421 if (ofpacts_pull_openflow10(msg, length - sizeof *ofs, ofpacts)) {
2425 fs->cookie = get_32aligned_be64(&ofs->cookie);
2426 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
2427 fs->priority = ntohs(ofs->priority);
2428 fs->table_id = ofs->table_id;
2429 fs->duration_sec = ntohl(ofs->duration_sec);
2430 fs->duration_nsec = ntohl(ofs->duration_nsec);
2431 fs->idle_timeout = ntohs(ofs->idle_timeout);
2432 fs->hard_timeout = ntohs(ofs->hard_timeout);
2435 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
2436 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
2438 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2439 const struct nx_flow_stats *nfs;
2440 size_t match_len, actions_len, length;
2442 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
2444 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %zu leftover "
2445 "bytes at end", msg->size);
2449 length = ntohs(nfs->length);
2450 match_len = ntohs(nfs->match_len);
2451 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
2452 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%zu "
2453 "claims invalid length %zu", match_len, length);
2456 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
2460 actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
2461 if (ofpacts_pull_openflow10(msg, actions_len, ofpacts)) {
2465 fs->cookie = nfs->cookie;
2466 fs->table_id = nfs->table_id;
2467 fs->duration_sec = ntohl(nfs->duration_sec);
2468 fs->duration_nsec = ntohl(nfs->duration_nsec);
2469 fs->priority = ntohs(nfs->priority);
2470 fs->idle_timeout = ntohs(nfs->idle_timeout);
2471 fs->hard_timeout = ntohs(nfs->hard_timeout);
2474 if (flow_age_extension) {
2475 if (nfs->idle_age) {
2476 fs->idle_age = ntohs(nfs->idle_age) - 1;
2478 if (nfs->hard_age) {
2479 fs->hard_age = ntohs(nfs->hard_age) - 1;
2482 fs->packet_count = ntohll(nfs->packet_count);
2483 fs->byte_count = ntohll(nfs->byte_count);
2489 fs->ofpacts = ofpacts->data;
2490 fs->ofpacts_len = ofpacts->size;
2495 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
2497 * We use this in situations where OVS internally uses UINT64_MAX to mean
2498 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
2500 unknown_to_zero(uint64_t count)
2502 return count != UINT64_MAX ? count : 0;
2505 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
2506 * those already present in the list of ofpbufs in 'replies'. 'replies' should
2507 * have been initialized with ofputil_start_stats_reply(). */
2509 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
2510 struct list *replies)
2512 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
2513 size_t start_ofs = reply->size;
2516 ofpraw_decode_partial(&raw, reply->data, reply->size);
2517 if (raw == OFPRAW_OFPST11_FLOW_REPLY || raw == OFPRAW_OFPST13_FLOW_REPLY) {
2518 struct ofp11_flow_stats *ofs;
2520 ofpbuf_put_uninit(reply, sizeof *ofs);
2521 oxm_put_match(reply, &fs->match);
2522 ofpacts_put_openflow11_instructions(fs->ofpacts, fs->ofpacts_len,
2525 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2526 ofs->length = htons(reply->size - start_ofs);
2527 ofs->table_id = fs->table_id;
2529 ofs->duration_sec = htonl(fs->duration_sec);
2530 ofs->duration_nsec = htonl(fs->duration_nsec);
2531 ofs->priority = htons(fs->priority);
2532 ofs->idle_timeout = htons(fs->idle_timeout);
2533 ofs->hard_timeout = htons(fs->hard_timeout);
2534 ofs->flags = (raw == OFPRAW_OFPST13_FLOW_REPLY) ? htons(fs->flags) : 0;
2535 memset(ofs->pad2, 0, sizeof ofs->pad2);
2536 ofs->cookie = fs->cookie;
2537 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
2538 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
2539 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
2540 struct ofp10_flow_stats *ofs;
2542 ofpbuf_put_uninit(reply, sizeof *ofs);
2543 ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply);
2545 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
2546 ofs->length = htons(reply->size - start_ofs);
2547 ofs->table_id = fs->table_id;
2549 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
2550 ofs->duration_sec = htonl(fs->duration_sec);
2551 ofs->duration_nsec = htonl(fs->duration_nsec);
2552 ofs->priority = htons(fs->priority);
2553 ofs->idle_timeout = htons(fs->idle_timeout);
2554 ofs->hard_timeout = htons(fs->hard_timeout);
2555 memset(ofs->pad2, 0, sizeof ofs->pad2);
2556 put_32aligned_be64(&ofs->cookie, fs->cookie);
2557 put_32aligned_be64(&ofs->packet_count,
2558 htonll(unknown_to_zero(fs->packet_count)));
2559 put_32aligned_be64(&ofs->byte_count,
2560 htonll(unknown_to_zero(fs->byte_count)));
2561 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
2562 struct nx_flow_stats *nfs;
2565 ofpbuf_put_uninit(reply, sizeof *nfs);
2566 match_len = nx_put_match(reply, &fs->match, 0, 0);
2567 ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply);
2569 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
2570 nfs->length = htons(reply->size - start_ofs);
2571 nfs->table_id = fs->table_id;
2573 nfs->duration_sec = htonl(fs->duration_sec);
2574 nfs->duration_nsec = htonl(fs->duration_nsec);
2575 nfs->priority = htons(fs->priority);
2576 nfs->idle_timeout = htons(fs->idle_timeout);
2577 nfs->hard_timeout = htons(fs->hard_timeout);
2578 nfs->idle_age = htons(fs->idle_age < 0 ? 0
2579 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
2581 nfs->hard_age = htons(fs->hard_age < 0 ? 0
2582 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
2584 nfs->match_len = htons(match_len);
2585 nfs->cookie = fs->cookie;
2586 nfs->packet_count = htonll(fs->packet_count);
2587 nfs->byte_count = htonll(fs->byte_count);
2592 ofpmp_postappend(replies, start_ofs);
2595 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
2596 * NXST_AGGREGATE reply matching 'request', and returns the message. */
2598 ofputil_encode_aggregate_stats_reply(
2599 const struct ofputil_aggregate_stats *stats,
2600 const struct ofp_header *request)
2602 struct ofp_aggregate_stats_reply *asr;
2603 uint64_t packet_count;
2604 uint64_t byte_count;
2608 ofpraw_decode(&raw, request);
2609 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
2610 packet_count = unknown_to_zero(stats->packet_count);
2611 byte_count = unknown_to_zero(stats->byte_count);
2613 packet_count = stats->packet_count;
2614 byte_count = stats->byte_count;
2617 msg = ofpraw_alloc_stats_reply(request, 0);
2618 asr = ofpbuf_put_zeros(msg, sizeof *asr);
2619 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
2620 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
2621 asr->flow_count = htonl(stats->flow_count);
2627 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
2628 const struct ofp_header *reply)
2630 struct ofp_aggregate_stats_reply *asr;
2633 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
2634 ofpraw_pull_assert(&msg);
2637 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
2638 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
2639 stats->flow_count = ntohl(asr->flow_count);
2644 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
2645 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
2646 * an OpenFlow error code. */
2648 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
2649 const struct ofp_header *oh)
2654 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2655 raw = ofpraw_pull_assert(&b);
2656 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
2657 const struct ofp12_flow_removed *ofr;
2660 ofr = ofpbuf_pull(&b, sizeof *ofr);
2662 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
2667 fr->priority = ntohs(ofr->priority);
2668 fr->cookie = ofr->cookie;
2669 fr->reason = ofr->reason;
2670 fr->table_id = ofr->table_id;
2671 fr->duration_sec = ntohl(ofr->duration_sec);
2672 fr->duration_nsec = ntohl(ofr->duration_nsec);
2673 fr->idle_timeout = ntohs(ofr->idle_timeout);
2674 fr->hard_timeout = ntohs(ofr->hard_timeout);
2675 fr->packet_count = ntohll(ofr->packet_count);
2676 fr->byte_count = ntohll(ofr->byte_count);
2677 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
2678 const struct ofp10_flow_removed *ofr;
2680 ofr = ofpbuf_pull(&b, sizeof *ofr);
2682 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
2683 fr->priority = ntohs(ofr->priority);
2684 fr->cookie = ofr->cookie;
2685 fr->reason = ofr->reason;
2687 fr->duration_sec = ntohl(ofr->duration_sec);
2688 fr->duration_nsec = ntohl(ofr->duration_nsec);
2689 fr->idle_timeout = ntohs(ofr->idle_timeout);
2690 fr->hard_timeout = 0;
2691 fr->packet_count = ntohll(ofr->packet_count);
2692 fr->byte_count = ntohll(ofr->byte_count);
2693 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
2694 struct nx_flow_removed *nfr;
2697 nfr = ofpbuf_pull(&b, sizeof *nfr);
2698 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
2704 return OFPERR_OFPBRC_BAD_LEN;
2707 fr->priority = ntohs(nfr->priority);
2708 fr->cookie = nfr->cookie;
2709 fr->reason = nfr->reason;
2710 fr->table_id = nfr->table_id ? nfr->table_id - 1 : 255;
2711 fr->duration_sec = ntohl(nfr->duration_sec);
2712 fr->duration_nsec = ntohl(nfr->duration_nsec);
2713 fr->idle_timeout = ntohs(nfr->idle_timeout);
2714 fr->hard_timeout = 0;
2715 fr->packet_count = ntohll(nfr->packet_count);
2716 fr->byte_count = ntohll(nfr->byte_count);
2724 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
2725 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
2728 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
2729 enum ofputil_protocol protocol)
2734 case OFPUTIL_P_OF12_OXM:
2735 case OFPUTIL_P_OF13_OXM: {
2736 struct ofp12_flow_removed *ofr;
2738 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
2739 ofputil_protocol_to_ofp_version(protocol),
2740 htonl(0), NXM_TYPICAL_LEN);
2741 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
2742 ofr->cookie = fr->cookie;
2743 ofr->priority = htons(fr->priority);
2744 ofr->reason = fr->reason;
2745 ofr->table_id = fr->table_id;
2746 ofr->duration_sec = htonl(fr->duration_sec);
2747 ofr->duration_nsec = htonl(fr->duration_nsec);
2748 ofr->idle_timeout = htons(fr->idle_timeout);
2749 ofr->hard_timeout = htons(fr->hard_timeout);
2750 ofr->packet_count = htonll(fr->packet_count);
2751 ofr->byte_count = htonll(fr->byte_count);
2752 oxm_put_match(msg, &fr->match);
2756 case OFPUTIL_P_OF10_STD:
2757 case OFPUTIL_P_OF10_STD_TID: {
2758 struct ofp10_flow_removed *ofr;
2760 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
2762 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
2763 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
2764 ofr->cookie = fr->cookie;
2765 ofr->priority = htons(fr->priority);
2766 ofr->reason = fr->reason;
2767 ofr->duration_sec = htonl(fr->duration_sec);
2768 ofr->duration_nsec = htonl(fr->duration_nsec);
2769 ofr->idle_timeout = htons(fr->idle_timeout);
2770 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
2771 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
2775 case OFPUTIL_P_OF10_NXM:
2776 case OFPUTIL_P_OF10_NXM_TID: {
2777 struct nx_flow_removed *nfr;
2780 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
2781 htonl(0), NXM_TYPICAL_LEN);
2782 nfr = ofpbuf_put_zeros(msg, sizeof *nfr);
2783 match_len = nx_put_match(msg, &fr->match, 0, 0);
2786 nfr->cookie = fr->cookie;
2787 nfr->priority = htons(fr->priority);
2788 nfr->reason = fr->reason;
2789 nfr->table_id = fr->table_id + 1;
2790 nfr->duration_sec = htonl(fr->duration_sec);
2791 nfr->duration_nsec = htonl(fr->duration_nsec);
2792 nfr->idle_timeout = htons(fr->idle_timeout);
2793 nfr->match_len = htons(match_len);
2794 nfr->packet_count = htonll(fr->packet_count);
2795 nfr->byte_count = htonll(fr->byte_count);
2807 ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin,
2808 struct match *match, struct ofpbuf *b)
2810 pin->packet = b->data;
2811 pin->packet_len = b->size;
2813 pin->fmd.in_port = match->flow.in_port.ofp_port;
2814 pin->fmd.tun_id = match->flow.tunnel.tun_id;
2815 pin->fmd.tun_src = match->flow.tunnel.ip_src;
2816 pin->fmd.tun_dst = match->flow.tunnel.ip_dst;
2817 pin->fmd.metadata = match->flow.metadata;
2818 memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs);
2822 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
2823 const struct ofp_header *oh)
2828 memset(pin, 0, sizeof *pin);
2830 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2831 raw = ofpraw_pull_assert(&b);
2832 if (raw == OFPRAW_OFPT13_PACKET_IN || raw == OFPRAW_OFPT12_PACKET_IN) {
2833 const struct ofp13_packet_in *opi;
2836 size_t packet_in_size;
2838 if (raw == OFPRAW_OFPT12_PACKET_IN) {
2839 packet_in_size = sizeof (struct ofp12_packet_in);
2841 packet_in_size = sizeof (struct ofp13_packet_in);
2844 opi = ofpbuf_pull(&b, packet_in_size);
2845 error = oxm_pull_match_loose(&b, &match);
2850 if (!ofpbuf_try_pull(&b, 2)) {
2851 return OFPERR_OFPBRC_BAD_LEN;
2854 pin->reason = opi->pi.reason;
2855 pin->table_id = opi->pi.table_id;
2856 pin->buffer_id = ntohl(opi->pi.buffer_id);
2857 pin->total_len = ntohs(opi->pi.total_len);
2859 if (raw == OFPRAW_OFPT13_PACKET_IN) {
2860 pin->cookie = opi->cookie;
2863 ofputil_decode_packet_in_finish(pin, &match, &b);
2864 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
2865 const struct ofp10_packet_in *opi;
2867 opi = ofpbuf_pull(&b, offsetof(struct ofp10_packet_in, data));
2869 pin->packet = opi->data;
2870 pin->packet_len = b.size;
2872 pin->fmd.in_port = u16_to_ofp(ntohs(opi->in_port));
2873 pin->reason = opi->reason;
2874 pin->buffer_id = ntohl(opi->buffer_id);
2875 pin->total_len = ntohs(opi->total_len);
2876 } else if (raw == OFPRAW_NXT_PACKET_IN) {
2877 const struct nx_packet_in *npi;
2881 npi = ofpbuf_pull(&b, sizeof *npi);
2882 error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL,
2888 if (!ofpbuf_try_pull(&b, 2)) {
2889 return OFPERR_OFPBRC_BAD_LEN;
2892 pin->reason = npi->reason;
2893 pin->table_id = npi->table_id;
2894 pin->cookie = npi->cookie;
2896 pin->buffer_id = ntohl(npi->buffer_id);
2897 pin->total_len = ntohs(npi->total_len);
2899 ofputil_decode_packet_in_finish(pin, &match, &b);
2908 ofputil_packet_in_to_match(const struct ofputil_packet_in *pin,
2909 struct match *match)
2913 match_init_catchall(match);
2914 if (pin->fmd.tun_id != htonll(0)) {
2915 match_set_tun_id(match, pin->fmd.tun_id);
2917 if (pin->fmd.tun_src != htonl(0)) {
2918 match_set_tun_src(match, pin->fmd.tun_src);
2920 if (pin->fmd.tun_dst != htonl(0)) {
2921 match_set_tun_dst(match, pin->fmd.tun_dst);
2923 if (pin->fmd.metadata != htonll(0)) {
2924 match_set_metadata(match, pin->fmd.metadata);
2927 for (i = 0; i < FLOW_N_REGS; i++) {
2928 if (pin->fmd.regs[i]) {
2929 match_set_reg(match, i, pin->fmd.regs[i]);
2933 match_set_in_port(match, pin->fmd.in_port);
2936 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
2937 * in the format specified by 'packet_in_format'. */
2939 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
2940 enum ofputil_protocol protocol,
2941 enum nx_packet_in_format packet_in_format)
2943 size_t send_len = MIN(pin->send_len, pin->packet_len);
2944 struct ofpbuf *packet;
2946 /* Add OFPT_PACKET_IN. */
2947 if (protocol == OFPUTIL_P_OF13_OXM || protocol == OFPUTIL_P_OF12_OXM) {
2948 struct ofp13_packet_in *opi;
2950 enum ofpraw packet_in_raw;
2951 enum ofp_version packet_in_version;
2952 size_t packet_in_size;
2954 if (protocol == OFPUTIL_P_OF12_OXM) {
2955 packet_in_raw = OFPRAW_OFPT12_PACKET_IN;
2956 packet_in_version = OFP12_VERSION;
2957 packet_in_size = sizeof (struct ofp12_packet_in);
2959 packet_in_raw = OFPRAW_OFPT13_PACKET_IN;
2960 packet_in_version = OFP13_VERSION;
2961 packet_in_size = sizeof (struct ofp13_packet_in);
2964 ofputil_packet_in_to_match(pin, &match);
2966 /* The final argument is just an estimate of the space required. */
2967 packet = ofpraw_alloc_xid(packet_in_raw, packet_in_version,
2968 htonl(0), (sizeof(struct flow_metadata) * 2
2970 ofpbuf_put_zeros(packet, packet_in_size);
2971 oxm_put_match(packet, &match);
2972 ofpbuf_put_zeros(packet, 2);
2973 ofpbuf_put(packet, pin->packet, send_len);
2976 opi->pi.buffer_id = htonl(pin->buffer_id);
2977 opi->pi.total_len = htons(pin->total_len);
2978 opi->pi.reason = pin->reason;
2979 opi->pi.table_id = pin->table_id;
2980 if (protocol == OFPUTIL_P_OF13_OXM) {
2981 opi->cookie = pin->cookie;
2983 } else if (packet_in_format == NXPIF_OPENFLOW10) {
2984 struct ofp10_packet_in *opi;
2986 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
2987 htonl(0), send_len);
2988 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp10_packet_in, data));
2989 opi->total_len = htons(pin->total_len);
2990 opi->in_port = htons(ofp_to_u16(pin->fmd.in_port));
2991 opi->reason = pin->reason;
2992 opi->buffer_id = htonl(pin->buffer_id);
2994 ofpbuf_put(packet, pin->packet, send_len);
2995 } else if (packet_in_format == NXPIF_NXM) {
2996 struct nx_packet_in *npi;
3000 ofputil_packet_in_to_match(pin, &match);
3002 /* The final argument is just an estimate of the space required. */
3003 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
3004 htonl(0), (sizeof(struct flow_metadata) * 2
3006 ofpbuf_put_zeros(packet, sizeof *npi);
3007 match_len = nx_put_match(packet, &match, 0, 0);
3008 ofpbuf_put_zeros(packet, 2);
3009 ofpbuf_put(packet, pin->packet, send_len);
3012 npi->buffer_id = htonl(pin->buffer_id);
3013 npi->total_len = htons(pin->total_len);
3014 npi->reason = pin->reason;
3015 npi->table_id = pin->table_id;
3016 npi->cookie = pin->cookie;
3017 npi->match_len = htons(match_len);
3021 ofpmsg_update_length(packet);
3026 /* Returns a string form of 'reason'. The return value is either a statically
3027 * allocated constant string or the 'bufsize'-byte buffer 'reasonbuf'.
3028 * 'bufsize' should be at least OFPUTIL_PACKET_IN_REASON_BUFSIZE. */
3030 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason,
3031 char *reasonbuf, size_t bufsize)
3038 case OFPR_INVALID_TTL:
3039 return "invalid_ttl";
3041 case OFPR_N_REASONS:
3043 snprintf(reasonbuf, bufsize, "%d", (int) reason);
3049 ofputil_packet_in_reason_from_string(const char *s,
3050 enum ofp_packet_in_reason *reason)
3054 for (i = 0; i < OFPR_N_REASONS; i++) {
3055 char reasonbuf[OFPUTIL_PACKET_IN_REASON_BUFSIZE];
3056 const char *reason_s;
3058 reason_s = ofputil_packet_in_reason_to_string(i, reasonbuf,
3060 if (!strcasecmp(s, reason_s)) {
3068 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
3071 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
3072 * message's actions. The caller must initialize 'ofpacts' and retains
3073 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
3075 * Returns 0 if successful, otherwise an OFPERR_* value. */
3077 ofputil_decode_packet_out(struct ofputil_packet_out *po,
3078 const struct ofp_header *oh,
3079 struct ofpbuf *ofpacts)
3084 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3085 raw = ofpraw_pull_assert(&b);
3087 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
3089 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3091 po->buffer_id = ntohl(opo->buffer_id);
3092 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
3097 error = ofpacts_pull_openflow11_actions(&b, ntohs(opo->actions_len),
3102 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
3104 const struct ofp10_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
3106 po->buffer_id = ntohl(opo->buffer_id);
3107 po->in_port = u16_to_ofp(ntohs(opo->in_port));
3109 error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts);
3117 if (ofp_to_u16(po->in_port) >= ofp_to_u16(OFPP_MAX)
3118 && po->in_port != OFPP_LOCAL
3119 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
3120 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
3122 return OFPERR_OFPBRC_BAD_PORT;
3125 po->ofpacts = ofpacts->data;
3126 po->ofpacts_len = ofpacts->size;
3128 if (po->buffer_id == UINT32_MAX) {
3129 po->packet = b.data;
3130 po->packet_len = b.size;
3139 /* ofputil_phy_port */
3141 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
3142 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3143 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3144 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3145 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3146 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3147 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3148 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3150 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
3151 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
3152 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
3153 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
3154 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
3155 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
3157 static enum netdev_features
3158 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
3160 uint32_t ofp10 = ntohl(ofp10_);
3161 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
3165 netdev_port_features_to_ofp10(enum netdev_features features)
3167 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
3170 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
3171 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
3172 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
3173 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
3174 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
3175 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
3176 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
3177 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
3178 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
3179 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
3180 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
3181 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
3182 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
3183 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
3184 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
3185 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
3187 static enum netdev_features
3188 netdev_port_features_from_ofp11(ovs_be32 ofp11)
3190 return ntohl(ofp11) & 0xffff;
3194 netdev_port_features_to_ofp11(enum netdev_features features)
3196 return htonl(features & 0xffff);
3200 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
3201 const struct ofp10_phy_port *opp)
3203 memset(pp, 0, sizeof *pp);
3205 pp->port_no = u16_to_ofp(ntohs(opp->port_no));
3206 memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN);
3207 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
3209 pp->config = ntohl(opp->config) & OFPPC10_ALL;
3210 pp->state = ntohl(opp->state) & OFPPS10_ALL;
3212 pp->curr = netdev_port_features_from_ofp10(opp->curr);
3213 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
3214 pp->supported = netdev_port_features_from_ofp10(opp->supported);
3215 pp->peer = netdev_port_features_from_ofp10(opp->peer);
3217 pp->curr_speed = netdev_features_to_bps(pp->curr, 0) / 1000;
3218 pp->max_speed = netdev_features_to_bps(pp->supported, 0) / 1000;
3224 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
3225 const struct ofp11_port *op)
3229 memset(pp, 0, sizeof *pp);
3231 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
3235 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
3236 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
3238 pp->config = ntohl(op->config) & OFPPC11_ALL;
3239 pp->state = ntohl(op->state) & OFPPC11_ALL;
3241 pp->curr = netdev_port_features_from_ofp11(op->curr);
3242 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
3243 pp->supported = netdev_port_features_from_ofp11(op->supported);
3244 pp->peer = netdev_port_features_from_ofp11(op->peer);
3246 pp->curr_speed = ntohl(op->curr_speed);
3247 pp->max_speed = ntohl(op->max_speed);
3253 ofputil_get_phy_port_size(enum ofp_version ofp_version)
3255 switch (ofp_version) {
3257 return sizeof(struct ofp10_phy_port);
3261 return sizeof(struct ofp11_port);
3268 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
3269 struct ofp10_phy_port *opp)
3271 memset(opp, 0, sizeof *opp);
3273 opp->port_no = htons(ofp_to_u16(pp->port_no));
3274 memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3275 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3277 opp->config = htonl(pp->config & OFPPC10_ALL);
3278 opp->state = htonl(pp->state & OFPPS10_ALL);
3280 opp->curr = netdev_port_features_to_ofp10(pp->curr);
3281 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
3282 opp->supported = netdev_port_features_to_ofp10(pp->supported);
3283 opp->peer = netdev_port_features_to_ofp10(pp->peer);
3287 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
3288 struct ofp11_port *op)
3290 memset(op, 0, sizeof *op);
3292 op->port_no = ofputil_port_to_ofp11(pp->port_no);
3293 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
3294 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
3296 op->config = htonl(pp->config & OFPPC11_ALL);
3297 op->state = htonl(pp->state & OFPPS11_ALL);
3299 op->curr = netdev_port_features_to_ofp11(pp->curr);
3300 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
3301 op->supported = netdev_port_features_to_ofp11(pp->supported);
3302 op->peer = netdev_port_features_to_ofp11(pp->peer);
3304 op->curr_speed = htonl(pp->curr_speed);
3305 op->max_speed = htonl(pp->max_speed);
3309 ofputil_put_phy_port(enum ofp_version ofp_version,
3310 const struct ofputil_phy_port *pp, struct ofpbuf *b)
3312 switch (ofp_version) {
3313 case OFP10_VERSION: {
3314 struct ofp10_phy_port *opp;
3315 if (b->size + sizeof *opp <= UINT16_MAX) {
3316 opp = ofpbuf_put_uninit(b, sizeof *opp);
3317 ofputil_encode_ofp10_phy_port(pp, opp);
3324 case OFP13_VERSION: {
3325 struct ofp11_port *op;
3326 if (b->size + sizeof *op <= UINT16_MAX) {
3327 op = ofpbuf_put_uninit(b, sizeof *op);
3328 ofputil_encode_ofp11_port(pp, op);
3339 ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version,
3340 const struct ofputil_phy_port *pp,
3341 struct list *replies)
3343 switch (ofp_version) {
3344 case OFP10_VERSION: {
3345 struct ofp10_phy_port *opp;
3347 opp = ofpmp_append(replies, sizeof *opp);
3348 ofputil_encode_ofp10_phy_port(pp, opp);
3354 case OFP13_VERSION: {
3355 struct ofp11_port *op;
3357 op = ofpmp_append(replies, sizeof *op);
3358 ofputil_encode_ofp11_port(pp, op);
3367 /* ofputil_switch_features */
3369 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
3370 OFPC_IP_REASM | OFPC_QUEUE_STATS)
3371 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
3372 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
3373 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
3374 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
3375 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
3376 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
3378 struct ofputil_action_bit_translation {
3379 enum ofputil_action_bitmap ofputil_bit;
3383 static const struct ofputil_action_bit_translation of10_action_bits[] = {
3384 { OFPUTIL_A_OUTPUT, OFPAT10_OUTPUT },
3385 { OFPUTIL_A_SET_VLAN_VID, OFPAT10_SET_VLAN_VID },
3386 { OFPUTIL_A_SET_VLAN_PCP, OFPAT10_SET_VLAN_PCP },
3387 { OFPUTIL_A_STRIP_VLAN, OFPAT10_STRIP_VLAN },
3388 { OFPUTIL_A_SET_DL_SRC, OFPAT10_SET_DL_SRC },
3389 { OFPUTIL_A_SET_DL_DST, OFPAT10_SET_DL_DST },
3390 { OFPUTIL_A_SET_NW_SRC, OFPAT10_SET_NW_SRC },
3391 { OFPUTIL_A_SET_NW_DST, OFPAT10_SET_NW_DST },
3392 { OFPUTIL_A_SET_NW_TOS, OFPAT10_SET_NW_TOS },
3393 { OFPUTIL_A_SET_TP_SRC, OFPAT10_SET_TP_SRC },
3394 { OFPUTIL_A_SET_TP_DST, OFPAT10_SET_TP_DST },
3395 { OFPUTIL_A_ENQUEUE, OFPAT10_ENQUEUE },
3399 static enum ofputil_action_bitmap
3400 decode_action_bits(ovs_be32 of_actions,
3401 const struct ofputil_action_bit_translation *x)
3403 enum ofputil_action_bitmap ofputil_actions;
3405 ofputil_actions = 0;
3406 for (; x->ofputil_bit; x++) {
3407 if (of_actions & htonl(1u << x->of_bit)) {
3408 ofputil_actions |= x->ofputil_bit;
3411 return ofputil_actions;
3415 ofputil_capabilities_mask(enum ofp_version ofp_version)
3417 /* Handle capabilities whose bit is unique for all Open Flow versions */
3418 switch (ofp_version) {
3421 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
3424 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
3426 /* Caller needs to check osf->header.version itself */
3431 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
3432 * abstract representation in '*features'. Initializes '*b' to iterate over
3433 * the OpenFlow port structures following 'osf' with later calls to
3434 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
3435 * OFPERR_* value. */
3437 ofputil_decode_switch_features(const struct ofp_header *oh,
3438 struct ofputil_switch_features *features,
3441 const struct ofp_switch_features *osf;
3444 ofpbuf_use_const(b, oh, ntohs(oh->length));
3445 raw = ofpraw_pull_assert(b);
3447 osf = ofpbuf_pull(b, sizeof *osf);
3448 features->datapath_id = ntohll(osf->datapath_id);
3449 features->n_buffers = ntohl(osf->n_buffers);
3450 features->n_tables = osf->n_tables;
3451 features->auxiliary_id = 0;
3453 features->capabilities = ntohl(osf->capabilities) &
3454 ofputil_capabilities_mask(oh->version);
3456 if (b->size % ofputil_get_phy_port_size(oh->version)) {
3457 return OFPERR_OFPBRC_BAD_LEN;
3460 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
3461 if (osf->capabilities & htonl(OFPC10_STP)) {
3462 features->capabilities |= OFPUTIL_C_STP;
3464 features->actions = decode_action_bits(osf->actions, of10_action_bits);
3465 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY
3466 || raw == OFPRAW_OFPT13_FEATURES_REPLY) {
3467 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
3468 features->capabilities |= OFPUTIL_C_GROUP_STATS;
3470 features->actions = 0;
3471 if (raw == OFPRAW_OFPT13_FEATURES_REPLY) {
3472 features->auxiliary_id = osf->auxiliary_id;
3475 return OFPERR_OFPBRC_BAD_VERSION;
3481 /* Returns true if the maximum number of ports are in 'oh'. */
3483 max_ports_in_features(const struct ofp_header *oh)
3485 size_t pp_size = ofputil_get_phy_port_size(oh->version);
3486 return ntohs(oh->length) + pp_size > UINT16_MAX;
3489 /* Given a buffer 'b' that contains a Features Reply message, checks if
3490 * it contains the maximum number of ports that will fit. If so, it
3491 * returns true and removes the ports from the message. The caller
3492 * should then send an OFPST_PORT_DESC stats request to get the ports,
3493 * since the switch may have more ports than could be represented in the
3494 * Features Reply. Otherwise, returns false.
3497 ofputil_switch_features_ports_trunc(struct ofpbuf *b)
3499 struct ofp_header *oh = b->data;
3501 if (max_ports_in_features(oh)) {
3502 /* Remove all the ports. */
3503 b->size = (sizeof(struct ofp_header)
3504 + sizeof(struct ofp_switch_features));
3505 ofpmsg_update_length(b);
3514 encode_action_bits(enum ofputil_action_bitmap ofputil_actions,
3515 const struct ofputil_action_bit_translation *x)
3517 uint32_t of_actions;
3520 for (; x->ofputil_bit; x++) {
3521 if (ofputil_actions & x->ofputil_bit) {
3522 of_actions |= 1 << x->of_bit;
3525 return htonl(of_actions);
3528 /* Returns a buffer owned by the caller that encodes 'features' in the format
3529 * required by 'protocol' with the given 'xid'. The caller should append port
3530 * information to the buffer with subsequent calls to
3531 * ofputil_put_switch_features_port(). */
3533 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
3534 enum ofputil_protocol protocol, ovs_be32 xid)
3536 struct ofp_switch_features *osf;
3538 enum ofp_version version;
3541 version = ofputil_protocol_to_ofp_version(protocol);
3544 raw = OFPRAW_OFPT10_FEATURES_REPLY;
3548 raw = OFPRAW_OFPT11_FEATURES_REPLY;
3551 raw = OFPRAW_OFPT13_FEATURES_REPLY;
3556 b = ofpraw_alloc_xid(raw, version, xid, 0);
3557 osf = ofpbuf_put_zeros(b, sizeof *osf);
3558 osf->datapath_id = htonll(features->datapath_id);
3559 osf->n_buffers = htonl(features->n_buffers);
3560 osf->n_tables = features->n_tables;
3562 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
3563 osf->capabilities = htonl(features->capabilities &
3564 ofputil_capabilities_mask(version));
3567 if (features->capabilities & OFPUTIL_C_STP) {
3568 osf->capabilities |= htonl(OFPC10_STP);
3570 osf->actions = encode_action_bits(features->actions, of10_action_bits);
3573 osf->auxiliary_id = features->auxiliary_id;
3577 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
3578 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
3588 /* Encodes 'pp' into the format required by the switch_features message already
3589 * in 'b', which should have been returned by ofputil_encode_switch_features(),
3590 * and appends the encoded version to 'b'. */
3592 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
3595 const struct ofp_header *oh = b->data;
3597 if (oh->version < OFP13_VERSION) {
3598 ofputil_put_phy_port(oh->version, pp, b);
3602 /* ofputil_port_status */
3604 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
3605 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
3607 ofputil_decode_port_status(const struct ofp_header *oh,
3608 struct ofputil_port_status *ps)
3610 const struct ofp_port_status *ops;
3614 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3615 ofpraw_pull_assert(&b);
3616 ops = ofpbuf_pull(&b, sizeof *ops);
3618 if (ops->reason != OFPPR_ADD &&
3619 ops->reason != OFPPR_DELETE &&
3620 ops->reason != OFPPR_MODIFY) {
3621 return OFPERR_NXBRC_BAD_REASON;
3623 ps->reason = ops->reason;
3625 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
3626 ovs_assert(retval != EOF);
3630 /* Converts the abstract form of a "port status" message in '*ps' into an
3631 * OpenFlow message suitable for 'protocol', and returns that encoded form in
3632 * a buffer owned by the caller. */
3634 ofputil_encode_port_status(const struct ofputil_port_status *ps,
3635 enum ofputil_protocol protocol)
3637 struct ofp_port_status *ops;
3639 enum ofp_version version;
3642 version = ofputil_protocol_to_ofp_version(protocol);
3645 raw = OFPRAW_OFPT10_PORT_STATUS;
3651 raw = OFPRAW_OFPT11_PORT_STATUS;
3658 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
3659 ops = ofpbuf_put_zeros(b, sizeof *ops);
3660 ops->reason = ps->reason;
3661 ofputil_put_phy_port(version, &ps->desc, b);
3662 ofpmsg_update_length(b);
3666 /* ofputil_port_mod */
3668 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
3669 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
3671 ofputil_decode_port_mod(const struct ofp_header *oh,
3672 struct ofputil_port_mod *pm)
3677 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3678 raw = ofpraw_pull_assert(&b);
3680 if (raw == OFPRAW_OFPT10_PORT_MOD) {
3681 const struct ofp10_port_mod *opm = b.data;
3683 pm->port_no = u16_to_ofp(ntohs(opm->port_no));
3684 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
3685 pm->config = ntohl(opm->config) & OFPPC10_ALL;
3686 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
3687 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
3688 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
3689 const struct ofp11_port_mod *opm = b.data;
3692 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
3697 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
3698 pm->config = ntohl(opm->config) & OFPPC11_ALL;
3699 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
3700 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
3702 return OFPERR_OFPBRC_BAD_TYPE;
3705 pm->config &= pm->mask;
3709 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
3710 * message suitable for 'protocol', and returns that encoded form in a buffer
3711 * owned by the caller. */
3713 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
3714 enum ofputil_protocol protocol)
3716 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
3719 switch (ofp_version) {
3720 case OFP10_VERSION: {
3721 struct ofp10_port_mod *opm;
3723 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
3724 opm = ofpbuf_put_zeros(b, sizeof *opm);
3725 opm->port_no = htons(ofp_to_u16(pm->port_no));
3726 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
3727 opm->config = htonl(pm->config & OFPPC10_ALL);
3728 opm->mask = htonl(pm->mask & OFPPC10_ALL);
3729 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
3735 case OFP13_VERSION: {
3736 struct ofp11_port_mod *opm;
3738 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
3739 opm = ofpbuf_put_zeros(b, sizeof *opm);
3740 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
3741 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
3742 opm->config = htonl(pm->config & OFPPC11_ALL);
3743 opm->mask = htonl(pm->mask & OFPPC11_ALL);
3744 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
3755 /* ofputil_role_request */
3757 /* Decodes the OpenFlow "role request" or "role reply" message in '*oh' into
3758 * an abstract form in '*rr'. Returns 0 if successful, otherwise an
3759 * OFPERR_* value. */
3761 ofputil_decode_role_message(const struct ofp_header *oh,
3762 struct ofputil_role_request *rr)
3767 ofpbuf_use_const(&b, oh, ntohs(oh->length));
3768 raw = ofpraw_pull_assert(&b);
3770 if (raw == OFPRAW_OFPT12_ROLE_REQUEST ||
3771 raw == OFPRAW_OFPT12_ROLE_REPLY) {
3772 const struct ofp12_role_request *orr = b.l3;
3774 if (orr->role != htonl(OFPCR12_ROLE_NOCHANGE) &&
3775 orr->role != htonl(OFPCR12_ROLE_EQUAL) &&
3776 orr->role != htonl(OFPCR12_ROLE_MASTER) &&
3777 orr->role != htonl(OFPCR12_ROLE_SLAVE)) {
3778 return OFPERR_OFPRRFC_BAD_ROLE;
3781 rr->role = ntohl(orr->role);
3782 if (raw == OFPRAW_OFPT12_ROLE_REQUEST
3783 ? orr->role == htonl(OFPCR12_ROLE_NOCHANGE)
3784 : orr->generation_id == htonll(UINT64_MAX)) {
3785 rr->have_generation_id = false;
3786 rr->generation_id = 0;
3788 rr->have_generation_id = true;
3789 rr->generation_id = ntohll(orr->generation_id);
3791 } else if (raw == OFPRAW_NXT_ROLE_REQUEST ||
3792 raw == OFPRAW_NXT_ROLE_REPLY) {
3793 const struct nx_role_request *nrr = b.l3;
3795 BUILD_ASSERT(NX_ROLE_OTHER + 1 == OFPCR12_ROLE_EQUAL);
3796 BUILD_ASSERT(NX_ROLE_MASTER + 1 == OFPCR12_ROLE_MASTER);
3797 BUILD_ASSERT(NX_ROLE_SLAVE + 1 == OFPCR12_ROLE_SLAVE);
3799 if (nrr->role != htonl(NX_ROLE_OTHER) &&
3800 nrr->role != htonl(NX_ROLE_MASTER) &&
3801 nrr->role != htonl(NX_ROLE_SLAVE)) {
3802 return OFPERR_OFPRRFC_BAD_ROLE;
3805 rr->role = ntohl(nrr->role) + 1;
3806 rr->have_generation_id = false;
3807 rr->generation_id = 0;
3815 /* Returns an encoded form of a role reply suitable for the "request" in a
3816 * buffer owned by the caller. */
3818 ofputil_encode_role_reply(const struct ofp_header *request,
3819 const struct ofputil_role_request *rr)
3824 raw = ofpraw_decode_assert(request);
3825 if (raw == OFPRAW_OFPT12_ROLE_REQUEST) {
3826 struct ofp12_role_request *orr;
3828 buf = ofpraw_alloc_reply(OFPRAW_OFPT12_ROLE_REPLY, request, 0);
3829 orr = ofpbuf_put_zeros(buf, sizeof *orr);
3831 orr->role = htonl(rr->role);
3832 orr->generation_id = htonll(rr->have_generation_id
3835 } else if (raw == OFPRAW_NXT_ROLE_REQUEST) {
3836 struct nx_role_request *nrr;
3838 BUILD_ASSERT(NX_ROLE_OTHER == OFPCR12_ROLE_EQUAL - 1);
3839 BUILD_ASSERT(NX_ROLE_MASTER == OFPCR12_ROLE_MASTER - 1);
3840 BUILD_ASSERT(NX_ROLE_SLAVE == OFPCR12_ROLE_SLAVE - 1);
3842 buf = ofpraw_alloc_reply(OFPRAW_NXT_ROLE_REPLY, request, 0);
3843 nrr = ofpbuf_put_zeros(buf, sizeof *nrr);
3844 nrr->role = htonl(rr->role - 1);
3855 ofputil_put_ofp10_table_stats(const struct ofp12_table_stats *in,
3859 enum ofp10_flow_wildcards wc10;
3860 enum oxm12_ofb_match_fields mf12;
3863 static const struct wc_map wc_map[] = {
3864 { OFPFW10_IN_PORT, OFPXMT12_OFB_IN_PORT },
3865 { OFPFW10_DL_VLAN, OFPXMT12_OFB_VLAN_VID },
3866 { OFPFW10_DL_SRC, OFPXMT12_OFB_ETH_SRC },
3867 { OFPFW10_DL_DST, OFPXMT12_OFB_ETH_DST},
3868 { OFPFW10_DL_TYPE, OFPXMT12_OFB_ETH_TYPE },
3869 { OFPFW10_NW_PROTO, OFPXMT12_OFB_IP_PROTO },
3870 { OFPFW10_TP_SRC, OFPXMT12_OFB_TCP_SRC },
3871 { OFPFW10_TP_DST, OFPXMT12_OFB_TCP_DST },
3872 { OFPFW10_NW_SRC_MASK, OFPXMT12_OFB_IPV4_SRC },
3873 { OFPFW10_NW_DST_MASK, OFPXMT12_OFB_IPV4_DST },
3874 { OFPFW10_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP },
3875 { OFPFW10_NW_TOS, OFPXMT12_OFB_IP_DSCP },
3878 struct ofp10_table_stats *out;
3879 const struct wc_map *p;
3881 out = ofpbuf_put_zeros(buf, sizeof *out);
3882 out->table_id = in->table_id;
3883 ovs_strlcpy(out->name, in->name, sizeof out->name);
3885 for (p = wc_map; p < &wc_map[ARRAY_SIZE(wc_map)]; p++) {
3886 if (in->wildcards & htonll(1ULL << p->mf12)) {
3887 out->wildcards |= htonl(p->wc10);
3890 out->max_entries = in->max_entries;
3891 out->active_count = in->active_count;
3892 put_32aligned_be64(&out->lookup_count, in->lookup_count);
3893 put_32aligned_be64(&out->matched_count, in->matched_count);
3897 oxm12_to_ofp11_flow_match_fields(ovs_be64 oxm12)
3900 enum ofp11_flow_match_fields fmf11;
3901 enum oxm12_ofb_match_fields mf12;
3904 static const struct map map[] = {
3905 { OFPFMF11_IN_PORT, OFPXMT12_OFB_IN_PORT },
3906 { OFPFMF11_DL_VLAN, OFPXMT12_OFB_VLAN_VID },
3907 { OFPFMF11_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP },
3908 { OFPFMF11_DL_TYPE, OFPXMT12_OFB_ETH_TYPE },
3909 { OFPFMF11_NW_TOS, OFPXMT12_OFB_IP_DSCP },
3910 { OFPFMF11_NW_PROTO, OFPXMT12_OFB_IP_PROTO },
3911 { OFPFMF11_TP_SRC, OFPXMT12_OFB_TCP_SRC },
3912 { OFPFMF11_TP_DST, OFPXMT12_OFB_TCP_DST },
3913 { OFPFMF11_MPLS_LABEL, OFPXMT12_OFB_MPLS_LABEL },
3914 { OFPFMF11_MPLS_TC, OFPXMT12_OFB_MPLS_TC },
3915 /* I don't know what OFPFMF11_TYPE means. */
3916 { OFPFMF11_DL_SRC, OFPXMT12_OFB_ETH_SRC },
3917 { OFPFMF11_DL_DST, OFPXMT12_OFB_ETH_DST },
3918 { OFPFMF11_NW_SRC, OFPXMT12_OFB_IPV4_SRC },
3919 { OFPFMF11_NW_DST, OFPXMT12_OFB_IPV4_DST },
3920 { OFPFMF11_METADATA, OFPXMT12_OFB_METADATA },
3923 const struct map *p;
3927 for (p = map; p < &map[ARRAY_SIZE(map)]; p++) {
3928 if (oxm12 & htonll(1ULL << p->mf12)) {
3932 return htonl(fmf11);
3936 ofputil_put_ofp11_table_stats(const struct ofp12_table_stats *in,
3939 struct ofp11_table_stats *out;
3941 out = ofpbuf_put_zeros(buf, sizeof *out);
3942 out->table_id = in->table_id;
3943 ovs_strlcpy(out->name, in->name, sizeof out->name);
3944 out->wildcards = oxm12_to_ofp11_flow_match_fields(in->wildcards);
3945 out->match = oxm12_to_ofp11_flow_match_fields(in->match);
3946 out->instructions = in->instructions;
3947 out->write_actions = in->write_actions;
3948 out->apply_actions = in->apply_actions;
3949 out->config = in->config;
3950 out->max_entries = in->max_entries;
3951 out->active_count = in->active_count;
3952 out->lookup_count = in->lookup_count;
3953 out->matched_count = in->matched_count;
3957 ofputil_put_ofp13_table_stats(const struct ofp12_table_stats *in,
3960 struct ofp13_table_stats *out;
3962 /* OF 1.3 splits table features off the ofp_table_stats,
3963 * so there is not much here. */
3965 out = ofpbuf_put_uninit(buf, sizeof *out);
3966 out->table_id = in->table_id;
3967 out->active_count = in->active_count;
3968 out->lookup_count = in->lookup_count;
3969 out->matched_count = in->matched_count;
3973 ofputil_encode_table_stats_reply(const struct ofp12_table_stats stats[], int n,
3974 const struct ofp_header *request)
3976 struct ofpbuf *reply;
3979 reply = ofpraw_alloc_stats_reply(request, n * sizeof *stats);
3981 switch ((enum ofp_version) request->version) {
3983 for (i = 0; i < n; i++) {
3984 ofputil_put_ofp10_table_stats(&stats[i], reply);
3989 for (i = 0; i < n; i++) {
3990 ofputil_put_ofp11_table_stats(&stats[i], reply);
3995 ofpbuf_put(reply, stats, n * sizeof *stats);
3999 for (i = 0; i < n; i++) {
4000 ofputil_put_ofp13_table_stats(&stats[i], reply);
4011 /* ofputil_flow_monitor_request */
4013 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
4014 * ofputil_flow_monitor_request in 'rq'.
4016 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
4017 * message. Calling this function multiple times for a single 'msg' iterates
4018 * through the requests. The caller must initially leave 'msg''s layer
4019 * pointers null and not modify them between calls.
4021 * Returns 0 if successful, EOF if no requests were left in this 'msg',
4022 * otherwise an OFPERR_* value. */
4024 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
4027 struct nx_flow_monitor_request *nfmr;
4031 msg->l2 = msg->data;
4032 ofpraw_pull_assert(msg);
4039 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
4041 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %zu "
4042 "leftover bytes at end", msg->size);
4043 return OFPERR_OFPBRC_BAD_LEN;
4046 flags = ntohs(nfmr->flags);
4047 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
4048 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
4049 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
4050 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
4052 return OFPERR_NXBRC_FM_BAD_FLAGS;
4055 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
4056 return OFPERR_NXBRC_MUST_BE_ZERO;
4059 rq->id = ntohl(nfmr->id);
4061 rq->out_port = u16_to_ofp(ntohs(nfmr->out_port));
4062 rq->table_id = nfmr->table_id;
4064 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
4068 ofputil_append_flow_monitor_request(
4069 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
4071 struct nx_flow_monitor_request *nfmr;
4076 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
4079 start_ofs = msg->size;
4080 ofpbuf_put_zeros(msg, sizeof *nfmr);
4081 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
4083 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
4084 nfmr->id = htonl(rq->id);
4085 nfmr->flags = htons(rq->flags);
4086 nfmr->out_port = htons(ofp_to_u16(rq->out_port));
4087 nfmr->match_len = htons(match_len);
4088 nfmr->table_id = rq->table_id;
4091 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
4092 * into an abstract ofputil_flow_update in 'update'. The caller must have
4093 * initialized update->match to point to space allocated for a match.
4095 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
4096 * actions (except for NXFME_ABBREV, which never includes actions). The caller
4097 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
4098 * will point into the 'ofpacts' buffer.
4100 * Multiple flow updates can be packed into a single OpenFlow message. Calling
4101 * this function multiple times for a single 'msg' iterates through the
4102 * updates. The caller must initially leave 'msg''s layer pointers null and
4103 * not modify them between calls.
4105 * Returns 0 if successful, EOF if no updates were left in this 'msg',
4106 * otherwise an OFPERR_* value. */
4108 ofputil_decode_flow_update(struct ofputil_flow_update *update,
4109 struct ofpbuf *msg, struct ofpbuf *ofpacts)
4111 struct nx_flow_update_header *nfuh;
4112 unsigned int length;
4115 msg->l2 = msg->data;
4116 ofpraw_pull_assert(msg);
4123 if (msg->size < sizeof(struct nx_flow_update_header)) {
4128 update->event = ntohs(nfuh->event);
4129 length = ntohs(nfuh->length);
4130 if (length > msg->size || length % 8) {
4134 if (update->event == NXFME_ABBREV) {
4135 struct nx_flow_update_abbrev *nfua;
4137 if (length != sizeof *nfua) {
4141 nfua = ofpbuf_pull(msg, sizeof *nfua);
4142 update->xid = nfua->xid;
4144 } else if (update->event == NXFME_ADDED
4145 || update->event == NXFME_DELETED
4146 || update->event == NXFME_MODIFIED) {
4147 struct nx_flow_update_full *nfuf;
4148 unsigned int actions_len;
4149 unsigned int match_len;
4152 if (length < sizeof *nfuf) {
4156 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
4157 match_len = ntohs(nfuf->match_len);
4158 if (sizeof *nfuf + match_len > length) {
4162 update->reason = ntohs(nfuf->reason);
4163 update->idle_timeout = ntohs(nfuf->idle_timeout);
4164 update->hard_timeout = ntohs(nfuf->hard_timeout);
4165 update->table_id = nfuf->table_id;
4166 update->cookie = nfuf->cookie;
4167 update->priority = ntohs(nfuf->priority);
4169 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
4174 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
4175 error = ofpacts_pull_openflow10(msg, actions_len, ofpacts);
4180 update->ofpacts = ofpacts->data;
4181 update->ofpacts_len = ofpacts->size;
4184 VLOG_WARN_RL(&bad_ofmsg_rl,
4185 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
4186 ntohs(nfuh->event));
4187 return OFPERR_NXBRC_FM_BAD_EVENT;
4191 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %zu "
4192 "leftover bytes at end", msg->size);
4193 return OFPERR_OFPBRC_BAD_LEN;
4197 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
4199 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
4201 return ntohl(cancel->id);
4205 ofputil_encode_flow_monitor_cancel(uint32_t id)
4207 struct nx_flow_monitor_cancel *nfmc;
4210 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
4211 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
4212 nfmc->id = htonl(id);
4217 ofputil_start_flow_update(struct list *replies)
4221 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
4225 list_push_back(replies, &msg->list_node);
4229 ofputil_append_flow_update(const struct ofputil_flow_update *update,
4230 struct list *replies)
4232 struct nx_flow_update_header *nfuh;
4236 msg = ofpbuf_from_list(list_back(replies));
4237 start_ofs = msg->size;
4239 if (update->event == NXFME_ABBREV) {
4240 struct nx_flow_update_abbrev *nfua;
4242 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
4243 nfua->xid = update->xid;
4245 struct nx_flow_update_full *nfuf;
4248 ofpbuf_put_zeros(msg, sizeof *nfuf);
4249 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
4250 ofpacts_put_openflow10(update->ofpacts, update->ofpacts_len, msg);
4252 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
4253 nfuf->reason = htons(update->reason);
4254 nfuf->priority = htons(update->priority);
4255 nfuf->idle_timeout = htons(update->idle_timeout);
4256 nfuf->hard_timeout = htons(update->hard_timeout);
4257 nfuf->match_len = htons(match_len);
4258 nfuf->table_id = update->table_id;
4259 nfuf->cookie = update->cookie;
4262 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
4263 nfuh->length = htons(msg->size - start_ofs);
4264 nfuh->event = htons(update->event);
4266 ofpmp_postappend(replies, start_ofs);
4270 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
4271 enum ofputil_protocol protocol)
4273 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
4277 size = po->ofpacts_len;
4278 if (po->buffer_id == UINT32_MAX) {
4279 size += po->packet_len;
4282 switch (ofp_version) {
4283 case OFP10_VERSION: {
4284 struct ofp10_packet_out *opo;
4287 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
4288 ofpbuf_put_zeros(msg, sizeof *opo);
4289 actions_ofs = msg->size;
4290 ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg);
4293 opo->buffer_id = htonl(po->buffer_id);
4294 opo->in_port = htons(ofp_to_u16(po->in_port));
4295 opo->actions_len = htons(msg->size - actions_ofs);
4301 case OFP13_VERSION: {
4302 struct ofp11_packet_out *opo;
4305 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
4306 ofpbuf_put_zeros(msg, sizeof *opo);
4307 len = ofpacts_put_openflow11_actions(po->ofpacts, po->ofpacts_len, msg);
4310 opo->buffer_id = htonl(po->buffer_id);
4311 opo->in_port = ofputil_port_to_ofp11(po->in_port);
4312 opo->actions_len = htons(len);
4320 if (po->buffer_id == UINT32_MAX) {
4321 ofpbuf_put(msg, po->packet, po->packet_len);
4324 ofpmsg_update_length(msg);
4329 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
4331 make_echo_request(enum ofp_version ofp_version)
4333 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
4337 /* Creates and returns an OFPT_ECHO_REPLY message matching the
4338 * OFPT_ECHO_REQUEST message in 'rq'. */
4340 make_echo_reply(const struct ofp_header *rq)
4342 struct ofpbuf rq_buf;
4343 struct ofpbuf *reply;
4345 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
4346 ofpraw_pull_assert(&rq_buf);
4348 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
4349 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
4354 ofputil_encode_barrier_request(enum ofp_version ofp_version)
4358 switch (ofp_version) {
4362 type = OFPRAW_OFPT11_BARRIER_REQUEST;
4366 type = OFPRAW_OFPT10_BARRIER_REQUEST;
4373 return ofpraw_alloc(type, ofp_version, 0);
4377 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
4379 switch (flags & OFPC_FRAG_MASK) {
4380 case OFPC_FRAG_NORMAL: return "normal";
4381 case OFPC_FRAG_DROP: return "drop";
4382 case OFPC_FRAG_REASM: return "reassemble";
4383 case OFPC_FRAG_NX_MATCH: return "nx-match";
4390 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
4392 if (!strcasecmp(s, "normal")) {
4393 *flags = OFPC_FRAG_NORMAL;
4394 } else if (!strcasecmp(s, "drop")) {
4395 *flags = OFPC_FRAG_DROP;
4396 } else if (!strcasecmp(s, "reassemble")) {
4397 *flags = OFPC_FRAG_REASM;
4398 } else if (!strcasecmp(s, "nx-match")) {
4399 *flags = OFPC_FRAG_NX_MATCH;
4406 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
4407 * port number and stores the latter in '*ofp10_port', for the purpose of
4408 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
4409 * otherwise an OFPERR_* number. On error, stores OFPP_NONE in '*ofp10_port'.
4411 * See the definition of OFP11_MAX for an explanation of the mapping. */
4413 ofputil_port_from_ofp11(ovs_be32 ofp11_port, ofp_port_t *ofp10_port)
4415 uint32_t ofp11_port_h = ntohl(ofp11_port);
4417 if (ofp11_port_h < ofp_to_u16(OFPP_MAX)) {
4418 *ofp10_port = u16_to_ofp(ofp11_port_h);
4420 } else if (ofp11_port_h >= ofp11_to_u32(OFPP11_MAX)) {
4421 *ofp10_port = u16_to_ofp(ofp11_port_h - OFPP11_OFFSET);
4424 *ofp10_port = OFPP_NONE;
4425 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
4426 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
4427 ofp11_port_h, ofp_to_u16(OFPP_MAX) - 1,
4428 ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
4429 return OFPERR_OFPBAC_BAD_OUT_PORT;
4433 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
4434 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
4436 * See the definition of OFP11_MAX for an explanation of the mapping. */
4438 ofputil_port_to_ofp11(ofp_port_t ofp10_port)
4440 return htonl(ofp_to_u16(ofp10_port) < ofp_to_u16(OFPP_MAX)
4441 ? ofp_to_u16(ofp10_port)
4442 : ofp_to_u16(ofp10_port) + OFPP11_OFFSET);
4445 /* Checks that 'port' is a valid output port for the OFPAT10_OUTPUT action, given
4446 * that the switch will never have more than 'max_ports' ports. Returns 0 if
4447 * 'port' is valid, otherwise an OpenFlow return code. */
4449 ofputil_check_output_port(ofp_port_t port, ofp_port_t max_ports)
4457 case OFPP_CONTROLLER:
4463 if (ofp_to_u16(port) < ofp_to_u16(max_ports)) {
4466 return OFPERR_OFPBAC_BAD_OUT_PORT;
4470 #define OFPUTIL_NAMED_PORTS \
4471 OFPUTIL_NAMED_PORT(IN_PORT) \
4472 OFPUTIL_NAMED_PORT(TABLE) \
4473 OFPUTIL_NAMED_PORT(NORMAL) \
4474 OFPUTIL_NAMED_PORT(FLOOD) \
4475 OFPUTIL_NAMED_PORT(ALL) \
4476 OFPUTIL_NAMED_PORT(CONTROLLER) \
4477 OFPUTIL_NAMED_PORT(LOCAL) \
4478 OFPUTIL_NAMED_PORT(ANY)
4480 /* For backwards compatibility, so that "none" is recognized as OFPP_ANY */
4481 #define OFPUTIL_NAMED_PORTS_WITH_NONE \
4482 OFPUTIL_NAMED_PORTS \
4483 OFPUTIL_NAMED_PORT(NONE)
4485 /* Stores the port number represented by 's' into '*portp'. 's' may be an
4486 * integer or, for reserved ports, the standard OpenFlow name for the port
4489 * Returns true if successful, false if 's' is not a valid OpenFlow port number
4490 * or name. The caller should issue an error message in this case, because
4491 * this function usually does not. (This gives the caller an opportunity to
4492 * look up the port name another way, e.g. by contacting the switch and listing
4493 * the names of all its ports).
4495 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
4496 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
4497 * range as described in include/openflow/openflow-1.1.h. */
4499 ofputil_port_from_string(const char *s, ofp_port_t *portp)
4504 if (str_to_uint(s, 10, &port32)) {
4505 if (port32 < ofp_to_u16(OFPP_MAX)) {
4507 } else if (port32 < ofp_to_u16(OFPP_FIRST_RESV)) {
4508 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
4509 "be translated to %u when talking to an OF1.1 or "
4510 "later controller", port32, port32 + OFPP11_OFFSET);
4511 } else if (port32 <= ofp_to_u16(OFPP_LAST_RESV)) {
4512 char name[OFP_MAX_PORT_NAME_LEN];
4514 ofputil_port_to_string(u16_to_ofp(port32), name, sizeof name);
4515 VLOG_WARN_ONCE("referring to port %s as %"PRIu32" is deprecated "
4516 "for compatibility with OpenFlow 1.1 and later",
4518 } else if (port32 < ofp11_to_u32(OFPP11_MAX)) {
4519 VLOG_WARN("port %u is outside the supported range 0 through "
4520 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
4521 UINT16_MAX, ofp11_to_u32(OFPP11_MAX), UINT32_MAX);
4524 port32 -= OFPP11_OFFSET;
4527 *portp = u16_to_ofp(port32);
4534 static const struct pair pairs[] = {
4535 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
4536 OFPUTIL_NAMED_PORTS_WITH_NONE
4537 #undef OFPUTIL_NAMED_PORT
4539 const struct pair *p;
4541 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
4542 if (!strcasecmp(s, p->name)) {
4551 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
4552 * Most ports' string representation is just the port number, but for special
4553 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
4555 ofputil_format_port(ofp_port_t port, struct ds *s)
4557 char name[OFP_MAX_PORT_NAME_LEN];
4559 ofputil_port_to_string(port, name, sizeof name);
4560 ds_put_cstr(s, name);
4563 /* Puts in the 'bufsize' byte in 'namebuf' a null-terminated string
4564 * representation of OpenFlow port number 'port'. Most ports are represented
4565 * as just the port number, but special ports, e.g. OFPP_LOCAL, are represented
4566 * by name, e.g. "LOCAL". */
4568 ofputil_port_to_string(ofp_port_t port,
4569 char namebuf[OFP_MAX_PORT_NAME_LEN], size_t bufsize)
4572 #define OFPUTIL_NAMED_PORT(NAME) \
4574 ovs_strlcpy(namebuf, #NAME, bufsize); \
4577 #undef OFPUTIL_NAMED_PORT
4580 snprintf(namebuf, bufsize, "%"PRIu16, port);
4585 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
4586 * 'ofp_version', tries to pull the first element from the array. If
4587 * successful, initializes '*pp' with an abstract representation of the
4588 * port and returns 0. If no ports remain to be decoded, returns EOF.
4589 * On an error, returns a positive OFPERR_* value. */
4591 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
4592 struct ofputil_phy_port *pp)
4594 switch (ofp_version) {
4595 case OFP10_VERSION: {
4596 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
4597 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
4601 case OFP13_VERSION: {
4602 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
4603 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
4610 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
4611 * 'ofp_version', returns the number of elements. */
4612 size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *b)
4614 return b->size / ofputil_get_phy_port_size(ofp_version);
4617 /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if
4618 * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1 if
4619 * 'name' is not the name of any action.
4621 * ofp-util.def lists the mapping from names to action. */
4623 ofputil_action_code_from_name(const char *name)
4625 static const char *const names[OFPUTIL_N_ACTIONS] = {
4627 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME,
4628 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
4629 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
4630 #include "ofp-util.def"
4633 const char *const *p;
4635 for (p = names; p < &names[ARRAY_SIZE(names)]; p++) {
4636 if (*p && !strcasecmp(name, *p)) {
4643 /* Appends an action of the type specified by 'code' to 'buf' and returns the
4644 * action. Initializes the parts of 'action' that identify it as having type
4645 * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that
4646 * have variable length, the length used and cleared is that of struct
4649 ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf)
4652 case OFPUTIL_ACTION_INVALID:
4655 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
4656 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
4657 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
4658 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
4659 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
4660 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
4661 #include "ofp-util.def"
4666 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
4668 ofputil_init_##ENUM(struct STRUCT *s) \
4670 memset(s, 0, sizeof *s); \
4671 s->type = htons(ENUM); \
4672 s->len = htons(sizeof *s); \
4676 ofputil_put_##ENUM(struct ofpbuf *buf) \
4678 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
4679 ofputil_init_##ENUM(s); \
4682 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
4683 OFPAT10_ACTION(ENUM, STRUCT, NAME)
4684 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
4686 ofputil_init_##ENUM(struct STRUCT *s) \
4688 memset(s, 0, sizeof *s); \
4689 s->type = htons(OFPAT10_VENDOR); \
4690 s->len = htons(sizeof *s); \
4691 s->vendor = htonl(NX_VENDOR_ID); \
4692 s->subtype = htons(ENUM); \
4696 ofputil_put_##ENUM(struct ofpbuf *buf) \
4698 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
4699 ofputil_init_##ENUM(s); \
4702 #include "ofp-util.def"
4705 ofputil_normalize_match__(struct match *match, bool may_log)
4708 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
4709 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
4710 MAY_NW_PROTO = 1 << 2, /* nw_proto */
4711 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
4712 MAY_ARP_SHA = 1 << 4, /* arp_sha */
4713 MAY_ARP_THA = 1 << 5, /* arp_tha */
4714 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
4715 MAY_ND_TARGET = 1 << 7, /* nd_target */
4716 MAY_MPLS = 1 << 8, /* mpls label and tc */
4719 struct flow_wildcards wc;
4721 /* Figure out what fields may be matched. */
4722 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
4723 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
4724 if (match->flow.nw_proto == IPPROTO_TCP ||
4725 match->flow.nw_proto == IPPROTO_UDP ||
4726 match->flow.nw_proto == IPPROTO_ICMP) {
4727 may_match |= MAY_TP_ADDR;
4729 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
4730 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
4731 if (match->flow.nw_proto == IPPROTO_TCP ||
4732 match->flow.nw_proto == IPPROTO_UDP) {
4733 may_match |= MAY_TP_ADDR;
4734 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
4735 may_match |= MAY_TP_ADDR;
4736 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
4737 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
4738 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
4739 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
4742 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
4743 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
4744 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
4745 } else if (eth_type_mpls(match->flow.dl_type)) {
4746 may_match = MAY_MPLS;
4751 /* Clear the fields that may not be matched. */
4753 if (!(may_match & MAY_NW_ADDR)) {
4754 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
4756 if (!(may_match & MAY_TP_ADDR)) {
4757 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
4759 if (!(may_match & MAY_NW_PROTO)) {
4760 wc.masks.nw_proto = 0;
4762 if (!(may_match & MAY_IPVx)) {
4763 wc.masks.nw_tos = 0;
4764 wc.masks.nw_ttl = 0;
4766 if (!(may_match & MAY_ARP_SHA)) {
4767 memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN);
4769 if (!(may_match & MAY_ARP_THA)) {
4770 memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN);
4772 if (!(may_match & MAY_IPV6)) {
4773 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
4774 wc.masks.ipv6_label = htonl(0);
4776 if (!(may_match & MAY_ND_TARGET)) {
4777 wc.masks.nd_target = in6addr_any;
4779 if (!(may_match & MAY_MPLS)) {
4780 wc.masks.mpls_lse = htonl(0);
4781 wc.masks.mpls_depth = 0;
4784 /* Log any changes. */
4785 if (!flow_wildcards_equal(&wc, &match->wc)) {
4786 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
4787 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
4790 match_zero_wildcarded_fields(match);
4793 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
4794 VLOG_INFO("normalization changed ofp_match, details:");
4795 VLOG_INFO(" pre: %s", pre);
4796 VLOG_INFO("post: %s", post);
4803 /* "Normalizes" the wildcards in 'match'. That means:
4805 * 1. If the type of level N is known, then only the valid fields for that
4806 * level may be specified. For example, ARP does not have a TOS field,
4807 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
4808 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
4809 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
4812 * 2. If the type of level N is not known (or not understood by Open
4813 * vSwitch), then no fields at all for that level may be specified. For
4814 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
4815 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
4818 * If this function changes 'match', it logs a rate-limited informational
4821 ofputil_normalize_match(struct match *match)
4823 ofputil_normalize_match__(match, true);
4826 /* Same as ofputil_normalize_match() without the logging. Thus, this function
4827 * is suitable for a program's internal use, whereas ofputil_normalize_match()
4828 * sense for use on flows received from elsewhere (so that a bug in the program
4829 * that sent them can be reported and corrected). */
4831 ofputil_normalize_match_quiet(struct match *match)
4833 ofputil_normalize_match__(match, false);
4836 /* Parses a key or a key-value pair from '*stringp'.
4838 * On success: Stores the key into '*keyp'. Stores the value, if present, into
4839 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
4840 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
4841 * are substrings of '*stringp' created by replacing some of its bytes by null
4842 * terminators. Returns true.
4844 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
4845 * NULL and returns false. */
4847 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
4849 char *pos, *key, *value;
4853 pos += strspn(pos, ", \t\r\n");
4855 *keyp = *valuep = NULL;
4860 key_len = strcspn(pos, ":=(, \t\r\n");
4861 if (key[key_len] == ':' || key[key_len] == '=') {
4862 /* The value can be separated by a colon. */
4865 value = key + key_len + 1;
4866 value_len = strcspn(value, ", \t\r\n");
4867 pos = value + value_len + (value[value_len] != '\0');
4868 value[value_len] = '\0';
4869 } else if (key[key_len] == '(') {
4870 /* The value can be surrounded by balanced parentheses. The outermost
4871 * set of parentheses is removed. */
4875 value = key + key_len + 1;
4876 for (value_len = 0; level > 0; value_len++) {
4877 switch (value[value_len]) {
4891 value[value_len - 1] = '\0';
4892 pos = value + value_len;
4894 /* There might be no value at all. */
4895 value = key + key_len; /* Will become the empty string below. */
4896 pos = key + key_len + (key[key_len] != '\0');
4898 key[key_len] = '\0';
4906 /* Encode a dump ports request for 'port', the encoded message
4907 * will be for Open Flow version 'ofp_version'. Returns message
4908 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
4910 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, ofp_port_t port)
4912 struct ofpbuf *request;
4914 switch (ofp_version) {
4915 case OFP10_VERSION: {
4916 struct ofp10_port_stats_request *req;
4917 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
4918 req = ofpbuf_put_zeros(request, sizeof *req);
4919 req->port_no = htons(ofp_to_u16(port));
4924 case OFP13_VERSION: {
4925 struct ofp11_port_stats_request *req;
4926 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
4927 req = ofpbuf_put_zeros(request, sizeof *req);
4928 req->port_no = ofputil_port_to_ofp11(port);
4939 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
4940 struct ofp10_port_stats *ps10)
4942 ps10->port_no = htons(ofp_to_u16(ops->port_no));
4943 memset(ps10->pad, 0, sizeof ps10->pad);
4944 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
4945 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
4946 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
4947 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
4948 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
4949 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
4950 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
4951 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
4952 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
4953 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
4954 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
4955 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
4959 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
4960 struct ofp11_port_stats *ps11)
4962 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
4963 memset(ps11->pad, 0, sizeof ps11->pad);
4964 ps11->rx_packets = htonll(ops->stats.rx_packets);
4965 ps11->tx_packets = htonll(ops->stats.tx_packets);
4966 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
4967 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
4968 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
4969 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
4970 ps11->rx_errors = htonll(ops->stats.rx_errors);
4971 ps11->tx_errors = htonll(ops->stats.tx_errors);
4972 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
4973 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
4974 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
4975 ps11->collisions = htonll(ops->stats.collisions);
4979 ofputil_port_stats_to_ofp13(const struct ofputil_port_stats *ops,
4980 struct ofp13_port_stats *ps13)
4982 ofputil_port_stats_to_ofp11(ops, &ps13->ps);
4983 ps13->duration_sec = htonl(ops->duration_sec);
4984 ps13->duration_nsec = htonl(ops->duration_nsec);
4988 /* Encode a ports stat for 'ops' and append it to 'replies'. */
4990 ofputil_append_port_stat(struct list *replies,
4991 const struct ofputil_port_stats *ops)
4993 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
4994 struct ofp_header *oh = msg->data;
4996 switch ((enum ofp_version)oh->version) {
4997 case OFP13_VERSION: {
4998 struct ofp13_port_stats *reply = ofpmp_append(replies, sizeof *reply);
4999 ofputil_port_stats_to_ofp13(ops, reply);
5003 case OFP11_VERSION: {
5004 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
5005 ofputil_port_stats_to_ofp11(ops, reply);
5009 case OFP10_VERSION: {
5010 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
5011 ofputil_port_stats_to_ofp10(ops, reply);
5021 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
5022 const struct ofp10_port_stats *ps10)
5024 memset(ops, 0, sizeof *ops);
5026 ops->port_no = u16_to_ofp(ntohs(ps10->port_no));
5027 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
5028 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
5029 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
5030 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
5031 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
5032 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
5033 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
5034 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
5035 ops->stats.rx_frame_errors =
5036 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
5037 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
5038 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
5039 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
5040 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
5046 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
5047 const struct ofp11_port_stats *ps11)
5051 memset(ops, 0, sizeof *ops);
5052 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
5057 ops->stats.rx_packets = ntohll(ps11->rx_packets);
5058 ops->stats.tx_packets = ntohll(ps11->tx_packets);
5059 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
5060 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
5061 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
5062 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
5063 ops->stats.rx_errors = ntohll(ps11->rx_errors);
5064 ops->stats.tx_errors = ntohll(ps11->tx_errors);
5065 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
5066 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
5067 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
5068 ops->stats.collisions = ntohll(ps11->collisions);
5069 ops->duration_sec = ops->duration_nsec = UINT32_MAX;
5075 ofputil_port_stats_from_ofp13(struct ofputil_port_stats *ops,
5076 const struct ofp13_port_stats *ps13)
5078 enum ofperr error = ofputil_port_stats_from_ofp11(ops, &ps13->ps);
5080 ops->duration_sec = ntohl(ps13->duration_sec);
5081 ops->duration_nsec = ntohl(ps13->duration_nsec);
5087 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
5090 ofputil_count_port_stats(const struct ofp_header *oh)
5094 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5095 ofpraw_pull_assert(&b);
5097 BUILD_ASSERT(sizeof(struct ofp10_port_stats) ==
5098 sizeof(struct ofp11_port_stats));
5099 return b.size / sizeof(struct ofp10_port_stats);
5102 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
5103 * ofputil_port_stats in 'ps'.
5105 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
5106 * message. Calling this function multiple times for a single 'msg' iterates
5107 * through the replies. The caller must initially leave 'msg''s layer pointers
5108 * null and not modify them between calls.
5110 * Returns 0 if successful, EOF if no replies were left in this 'msg',
5111 * otherwise a positive errno value. */
5113 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
5119 ? ofpraw_decode(&raw, msg->l2)
5120 : ofpraw_pull(&raw, msg));
5127 } else if (raw == OFPRAW_OFPST13_PORT_REPLY) {
5128 const struct ofp13_port_stats *ps13;
5130 ps13 = ofpbuf_try_pull(msg, sizeof *ps13);
5134 return ofputil_port_stats_from_ofp13(ps, ps13);
5135 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
5136 const struct ofp11_port_stats *ps11;
5138 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
5142 return ofputil_port_stats_from_ofp11(ps, ps11);
5143 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
5144 const struct ofp10_port_stats *ps10;
5146 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
5150 return ofputil_port_stats_from_ofp10(ps, ps10);
5156 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover "
5157 "bytes at end", msg->size);
5158 return OFPERR_OFPBRC_BAD_LEN;
5161 /* Parse a port status request message into a 16 bit OpenFlow 1.0
5162 * port number and stores the latter in '*ofp10_port'.
5163 * Returns 0 if successful, otherwise an OFPERR_* number. */
5165 ofputil_decode_port_stats_request(const struct ofp_header *request,
5166 ofp_port_t *ofp10_port)
5168 switch ((enum ofp_version)request->version) {
5171 case OFP11_VERSION: {
5172 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
5173 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
5176 case OFP10_VERSION: {
5177 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
5178 *ofp10_port = u16_to_ofp(ntohs(psr10->port_no));
5187 /* Parse a queue status request message into 'oqsr'.
5188 * Returns 0 if successful, otherwise an OFPERR_* number. */
5190 ofputil_decode_queue_stats_request(const struct ofp_header *request,
5191 struct ofputil_queue_stats_request *oqsr)
5193 switch ((enum ofp_version)request->version) {
5196 case OFP11_VERSION: {
5197 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
5198 oqsr->queue_id = ntohl(qsr11->queue_id);
5199 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
5202 case OFP10_VERSION: {
5203 const struct ofp10_queue_stats_request *qsr10 = ofpmsg_body(request);
5204 oqsr->queue_id = ntohl(qsr10->queue_id);
5205 oqsr->port_no = u16_to_ofp(ntohs(qsr10->port_no));
5206 /* OF 1.0 uses OFPP_ALL for OFPP_ANY */
5207 if (oqsr->port_no == OFPP_ALL) {
5208 oqsr->port_no = OFPP_ANY;
5218 /* Encode a queue statsrequest for 'oqsr', the encoded message
5219 * will be fore Open Flow version 'ofp_version'. Returns message
5220 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
5222 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
5223 const struct ofputil_queue_stats_request *oqsr)
5225 struct ofpbuf *request;
5227 switch (ofp_version) {
5230 case OFP13_VERSION: {
5231 struct ofp11_queue_stats_request *req;
5232 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
5233 req = ofpbuf_put_zeros(request, sizeof *req);
5234 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
5235 req->queue_id = htonl(oqsr->queue_id);
5238 case OFP10_VERSION: {
5239 struct ofp10_queue_stats_request *req;
5240 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
5241 req = ofpbuf_put_zeros(request, sizeof *req);
5242 /* OpenFlow 1.0 needs OFPP_ALL instead of OFPP_ANY */
5243 req->port_no = htons(ofp_to_u16(oqsr->port_no == OFPP_ANY
5244 ? OFPP_ALL : oqsr->port_no));
5245 req->queue_id = htonl(oqsr->queue_id);
5255 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
5258 ofputil_count_queue_stats(const struct ofp_header *oh)
5262 ofpbuf_use_const(&b, oh, ntohs(oh->length));
5263 ofpraw_pull_assert(&b);
5265 BUILD_ASSERT(sizeof(struct ofp10_queue_stats) ==
5266 sizeof(struct ofp11_queue_stats));
5267 return b.size / sizeof(struct ofp10_queue_stats);
5271 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
5272 const struct ofp10_queue_stats *qs10)
5274 oqs->port_no = u16_to_ofp(ntohs(qs10->port_no));
5275 oqs->queue_id = ntohl(qs10->queue_id);
5276 oqs->stats.tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
5277 oqs->stats.tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
5278 oqs->stats.tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
5284 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
5285 const struct ofp11_queue_stats *qs11)
5289 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
5294 oqs->queue_id = ntohl(qs11->queue_id);
5295 oqs->stats.tx_bytes = ntohll(qs11->tx_bytes);
5296 oqs->stats.tx_packets = ntohll(qs11->tx_packets);
5297 oqs->stats.tx_errors = ntohll(qs11->tx_errors);
5303 ofputil_queue_stats_from_ofp13(struct ofputil_queue_stats *oqs,
5304 const struct ofp13_queue_stats *qs13)
5307 = ofputil_queue_stats_from_ofp11(oqs, &qs13->qs);
5309 /* FIXME: Get qs13->duration_sec and qs13->duration_nsec,
5310 * Add to netdev_queue_stats? */
5316 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
5317 * ofputil_queue_stats in 'qs'.
5319 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
5320 * message. Calling this function multiple times for a single 'msg' iterates
5321 * through the replies. The caller must initially leave 'msg''s layer pointers
5322 * null and not modify them between calls.
5324 * Returns 0 if successful, EOF if no replies were left in this 'msg',
5325 * otherwise a positive errno value. */
5327 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
5333 ? ofpraw_decode(&raw, msg->l2)
5334 : ofpraw_pull(&raw, msg));
5341 } else if (raw == OFPRAW_OFPST13_QUEUE_REPLY) {
5342 const struct ofp13_queue_stats *qs13;
5344 qs13 = ofpbuf_try_pull(msg, sizeof *qs13);
5348 return ofputil_queue_stats_from_ofp13(qs, qs13);
5349 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
5350 const struct ofp11_queue_stats *qs11;
5352 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
5356 return ofputil_queue_stats_from_ofp11(qs, qs11);
5357 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
5358 const struct ofp10_queue_stats *qs10;
5360 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
5364 return ofputil_queue_stats_from_ofp10(qs, qs10);
5370 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover "
5371 "bytes at end", msg->size);
5372 return OFPERR_OFPBRC_BAD_LEN;
5376 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
5377 struct ofp10_queue_stats *qs10)
5379 qs10->port_no = htons(ofp_to_u16(oqs->port_no));
5380 memset(qs10->pad, 0, sizeof qs10->pad);
5381 qs10->queue_id = htonl(oqs->queue_id);
5382 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->stats.tx_bytes));
5383 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->stats.tx_packets));
5384 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->stats.tx_errors));
5388 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
5389 struct ofp11_queue_stats *qs11)
5391 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
5392 qs11->queue_id = htonl(oqs->queue_id);
5393 qs11->tx_bytes = htonll(oqs->stats.tx_bytes);
5394 qs11->tx_packets = htonll(oqs->stats.tx_packets);
5395 qs11->tx_errors = htonll(oqs->stats.tx_errors);
5399 ofputil_queue_stats_to_ofp13(const struct ofputil_queue_stats *oqs,
5400 struct ofp13_queue_stats *qs13)
5402 ofputil_queue_stats_to_ofp11(oqs, &qs13->qs);
5403 /* OF 1.3 adds duration fields */
5404 /* FIXME: Need to implement queue alive duration (sec + nsec) */
5405 qs13->duration_sec = htonl(~0);
5406 qs13->duration_nsec = htonl(~0);
5409 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
5411 ofputil_append_queue_stat(struct list *replies,
5412 const struct ofputil_queue_stats *oqs)
5414 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
5415 struct ofp_header *oh = msg->data;
5417 switch ((enum ofp_version)oh->version) {
5418 case OFP13_VERSION: {
5419 struct ofp13_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
5420 ofputil_queue_stats_to_ofp13(oqs, reply);
5425 case OFP11_VERSION: {
5426 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
5427 ofputil_queue_stats_to_ofp11(oqs, reply);
5431 case OFP10_VERSION: {
5432 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);
5433 ofputil_queue_stats_to_ofp10(oqs, reply);