2 * Copyright (c) 2008, 2009, 2010, 2011, 2012 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"
21 #include <sys/types.h>
22 #include <netinet/in.h>
23 #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 == 18);
89 /* Initialize most of wc. */
90 flow_wildcards_init_catchall(wc);
92 if (!(ofpfw & OFPFW10_IN_PORT)) {
93 wc->masks.in_port = 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 = 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) {
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(match->flow.in_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 (match->flow.dl_type == htons(ETH_TYPE_MPLS) ||
443 match->flow.dl_type == htons(ETH_TYPE_MPLS_MCAST)) {
444 enum { OFPFW11_MPLS_ALL = OFPFW11_MPLS_LABEL | OFPFW11_MPLS_TC };
446 if ((wc & OFPFW11_MPLS_ALL) != OFPFW11_MPLS_ALL) {
447 /* MPLS not supported. */
448 return OFPERR_OFPBMC_BAD_TAG;
452 match_set_metadata_masked(match, ofmatch->metadata,
453 ~ofmatch->metadata_mask);
458 /* Convert 'match' into the OpenFlow 1.1 match structure 'ofmatch'. */
460 ofputil_match_to_ofp11_match(const struct match *match,
461 struct ofp11_match *ofmatch)
466 memset(ofmatch, 0, sizeof *ofmatch);
467 ofmatch->omh.type = htons(OFPMT_STANDARD);
468 ofmatch->omh.length = htons(OFPMT11_STANDARD_LENGTH);
470 if (!match->wc.masks.in_port) {
471 wc |= OFPFW11_IN_PORT;
473 ofmatch->in_port = ofputil_port_to_ofp11(match->flow.in_port);
476 memcpy(ofmatch->dl_src, match->flow.dl_src, ETH_ADDR_LEN);
477 for (i = 0; i < ETH_ADDR_LEN; i++) {
478 ofmatch->dl_src_mask[i] = ~match->wc.masks.dl_src[i];
481 memcpy(ofmatch->dl_dst, match->flow.dl_dst, ETH_ADDR_LEN);
482 for (i = 0; i < ETH_ADDR_LEN; i++) {
483 ofmatch->dl_dst_mask[i] = ~match->wc.masks.dl_dst[i];
486 if (match->wc.masks.vlan_tci == htons(0)) {
487 wc |= OFPFW11_DL_VLAN | OFPFW11_DL_VLAN_PCP;
488 } else if (match->wc.masks.vlan_tci & htons(VLAN_CFI)
489 && !(match->flow.vlan_tci & htons(VLAN_CFI))) {
490 ofmatch->dl_vlan = htons(OFPVID11_NONE);
491 wc |= OFPFW11_DL_VLAN_PCP;
493 if (!(match->wc.masks.vlan_tci & htons(VLAN_VID_MASK))) {
494 ofmatch->dl_vlan = htons(OFPVID11_ANY);
496 ofmatch->dl_vlan = htons(vlan_tci_to_vid(match->flow.vlan_tci));
499 if (!(match->wc.masks.vlan_tci & htons(VLAN_PCP_MASK))) {
500 wc |= OFPFW11_DL_VLAN_PCP;
502 ofmatch->dl_vlan_pcp = vlan_tci_to_pcp(match->flow.vlan_tci);
506 if (!match->wc.masks.dl_type) {
507 wc |= OFPFW11_DL_TYPE;
509 ofmatch->dl_type = ofputil_dl_type_to_openflow(match->flow.dl_type);
512 if (!(match->wc.masks.nw_tos & IP_DSCP_MASK)) {
513 wc |= OFPFW11_NW_TOS;
515 ofmatch->nw_tos = match->flow.nw_tos & IP_DSCP_MASK;
518 if (!match->wc.masks.nw_proto) {
519 wc |= OFPFW11_NW_PROTO;
521 ofmatch->nw_proto = match->flow.nw_proto;
524 ofmatch->nw_src = match->flow.nw_src;
525 ofmatch->nw_src_mask = ~match->wc.masks.nw_src;
526 ofmatch->nw_dst = match->flow.nw_dst;
527 ofmatch->nw_dst_mask = ~match->wc.masks.nw_dst;
529 if (!match->wc.masks.tp_src) {
530 wc |= OFPFW11_TP_SRC;
532 ofmatch->tp_src = match->flow.tp_src;
535 if (!match->wc.masks.tp_dst) {
536 wc |= OFPFW11_TP_DST;
538 ofmatch->tp_dst = match->flow.tp_dst;
541 /* MPLS not supported. */
542 wc |= OFPFW11_MPLS_LABEL;
543 wc |= OFPFW11_MPLS_TC;
545 ofmatch->metadata = match->flow.metadata;
546 ofmatch->metadata_mask = ~match->wc.masks.metadata;
548 ofmatch->wildcards = htonl(wc);
551 /* Given a 'dl_type' value in the format used in struct flow, returns the
552 * corresponding 'dl_type' value for use in an ofp10_match or ofp11_match
555 ofputil_dl_type_to_openflow(ovs_be16 flow_dl_type)
557 return (flow_dl_type == htons(FLOW_DL_TYPE_NONE)
558 ? htons(OFP_DL_TYPE_NOT_ETH_TYPE)
562 /* Given a 'dl_type' value in the format used in an ofp10_match or ofp11_match
563 * structure, returns the corresponding 'dl_type' value for use in struct
566 ofputil_dl_type_from_openflow(ovs_be16 ofp_dl_type)
568 return (ofp_dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)
569 ? htons(FLOW_DL_TYPE_NONE)
575 struct proto_abbrev {
576 enum ofputil_protocol protocol;
580 /* Most users really don't care about some of the differences between
581 * protocols. These abbreviations help with that. */
582 static const struct proto_abbrev proto_abbrevs[] = {
583 { OFPUTIL_P_ANY, "any" },
584 { OFPUTIL_P_OF10_ANY, "OpenFlow10" },
585 { OFPUTIL_P_NXM_ANY, "NXM" },
587 #define N_PROTO_ABBREVS ARRAY_SIZE(proto_abbrevs)
589 enum ofputil_protocol ofputil_flow_dump_protocols[] = {
593 size_t ofputil_n_flow_dump_protocols = ARRAY_SIZE(ofputil_flow_dump_protocols);
595 /* Returns the ofputil_protocol that is initially in effect on an OpenFlow
596 * connection that has negotiated the given 'version'. 'version' should
597 * normally be an 8-bit OpenFlow version identifier (e.g. 0x01 for OpenFlow
598 * 1.0, 0x02 for OpenFlow 1.1). Returns 0 if 'version' is not supported or
599 * outside the valid range. */
600 enum ofputil_protocol
601 ofputil_protocol_from_ofp_version(enum ofp_version version)
605 return OFPUTIL_P_OF10;
607 return OFPUTIL_P_OF12;
614 /* Returns the OpenFlow protocol version number (e.g. OFP10_VERSION,
615 * OFP11_VERSION or OFP12_VERSION) that corresponds to 'protocol'. */
617 ofputil_protocol_to_ofp_version(enum ofputil_protocol protocol)
621 case OFPUTIL_P_OF10_TID:
623 case OFPUTIL_P_NXM_TID:
624 return OFP10_VERSION;
626 return OFP12_VERSION;
632 /* Returns true if 'protocol' is a single OFPUTIL_P_* value, false
635 ofputil_protocol_is_valid(enum ofputil_protocol protocol)
637 return protocol & OFPUTIL_P_ANY && is_pow2(protocol);
640 /* Returns the equivalent of 'protocol' with the Nicira flow_mod_table_id
641 * extension turned on or off if 'enable' is true or false, respectively.
643 * This extension is only useful for protocols whose "standard" version does
644 * not allow specific tables to be modified. In particular, this is true of
645 * OpenFlow 1.0. In later versions of OpenFlow, a flow_mod request always
646 * specifies a table ID and so there is no need for such an extension. When
647 * 'protocol' is such a protocol that doesn't need a flow_mod_table_id
648 * extension, this function just returns its 'protocol' argument unchanged
649 * regardless of the value of 'enable'. */
650 enum ofputil_protocol
651 ofputil_protocol_set_tid(enum ofputil_protocol protocol, bool enable)
655 case OFPUTIL_P_OF10_TID:
656 return enable ? OFPUTIL_P_OF10_TID : OFPUTIL_P_OF10;
659 case OFPUTIL_P_NXM_TID:
660 return enable ? OFPUTIL_P_NXM_TID : OFPUTIL_P_NXM;
663 return OFPUTIL_P_OF12;
670 /* Returns the "base" version of 'protocol'. That is, if 'protocol' includes
671 * some extension to a standard protocol version, the return value is the
672 * standard version of that protocol without any extension. If 'protocol' is a
673 * standard protocol version, returns 'protocol' unchanged. */
674 enum ofputil_protocol
675 ofputil_protocol_to_base(enum ofputil_protocol protocol)
677 return ofputil_protocol_set_tid(protocol, false);
680 /* Returns 'new_base' with any extensions taken from 'cur'. */
681 enum ofputil_protocol
682 ofputil_protocol_set_base(enum ofputil_protocol cur,
683 enum ofputil_protocol new_base)
685 bool tid = (cur & OFPUTIL_P_TID) != 0;
689 case OFPUTIL_P_OF10_TID:
690 return ofputil_protocol_set_tid(OFPUTIL_P_OF10, tid);
693 case OFPUTIL_P_NXM_TID:
694 return ofputil_protocol_set_tid(OFPUTIL_P_NXM, tid);
697 return ofputil_protocol_set_tid(OFPUTIL_P_OF12, tid);
704 /* Returns a string form of 'protocol', if a simple form exists (that is, if
705 * 'protocol' is either a single protocol or it is a combination of protocols
706 * that have a single abbreviation). Otherwise, returns NULL. */
708 ofputil_protocol_to_string(enum ofputil_protocol protocol)
710 const struct proto_abbrev *p;
712 /* Use a "switch" statement for single-bit names so that we get a compiler
713 * warning if we forget any. */
716 return "NXM-table_id";
718 case OFPUTIL_P_NXM_TID:
719 return "NXM+table_id";
722 return "OpenFlow10-table_id";
724 case OFPUTIL_P_OF10_TID:
725 return "OpenFlow10+table_id";
731 /* Check abbreviations. */
732 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
733 if (protocol == p->protocol) {
741 /* Returns a string that represents 'protocols'. The return value might be a
742 * comma-separated list if 'protocols' doesn't have a simple name. The return
743 * value is "none" if 'protocols' is 0.
745 * The caller must free the returned string (with free()). */
747 ofputil_protocols_to_string(enum ofputil_protocol protocols)
751 assert(!(protocols & ~OFPUTIL_P_ANY));
752 if (protocols == 0) {
753 return xstrdup("none");
758 const struct proto_abbrev *p;
762 ds_put_char(&s, ',');
765 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
766 if ((protocols & p->protocol) == p->protocol) {
767 ds_put_cstr(&s, p->name);
768 protocols &= ~p->protocol;
773 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
774 enum ofputil_protocol bit = 1u << i;
776 if (protocols & bit) {
777 ds_put_cstr(&s, ofputil_protocol_to_string(bit));
786 return ds_steal_cstr(&s);
789 static enum ofputil_protocol
790 ofputil_protocol_from_string__(const char *s, size_t n)
792 const struct proto_abbrev *p;
795 for (i = 0; i < CHAR_BIT * sizeof(enum ofputil_protocol); i++) {
796 enum ofputil_protocol bit = 1u << i;
797 const char *name = ofputil_protocol_to_string(bit);
799 if (name && n == strlen(name) && !strncasecmp(s, name, n)) {
804 for (p = proto_abbrevs; p < &proto_abbrevs[N_PROTO_ABBREVS]; p++) {
805 if (n == strlen(p->name) && !strncasecmp(s, p->name, n)) {
813 /* Returns the nonempty set of protocols represented by 's', which can be a
814 * single protocol name or abbreviation or a comma-separated list of them.
816 * Aborts the program with an error message if 's' is invalid. */
817 enum ofputil_protocol
818 ofputil_protocols_from_string(const char *s)
820 const char *orig_s = s;
821 enum ofputil_protocol protocols;
825 enum ofputil_protocol p;
834 p = ofputil_protocol_from_string__(s, n);
836 ovs_fatal(0, "%.*s: unknown flow protocol", (int) n, s);
844 ovs_fatal(0, "%s: no flow protocol specified", orig_s);
850 ofputil_packet_in_format_is_valid(enum nx_packet_in_format packet_in_format)
852 switch (packet_in_format) {
853 case NXPIF_OPENFLOW10:
862 ofputil_packet_in_format_to_string(enum nx_packet_in_format packet_in_format)
864 switch (packet_in_format) {
865 case NXPIF_OPENFLOW10:
875 ofputil_packet_in_format_from_string(const char *s)
877 return (!strcmp(s, "openflow10") ? NXPIF_OPENFLOW10
878 : !strcmp(s, "nxm") ? NXPIF_NXM
883 regs_fully_wildcarded(const struct flow_wildcards *wc)
887 for (i = 0; i < FLOW_N_REGS; i++) {
888 if (wc->masks.regs[i] != 0) {
896 tun_parms_fully_wildcarded(const struct flow_wildcards *wc)
898 return (!wc->masks.tunnel.ip_src &&
899 !wc->masks.tunnel.ip_dst &&
900 !wc->masks.tunnel.ip_ttl &&
901 !wc->masks.tunnel.ip_tos &&
902 !wc->masks.tunnel.flags);
905 /* Returns a bit-mask of ofputil_protocols that can be used for sending 'match'
906 * to a switch (e.g. to add or remove a flow). Only NXM can handle tunnel IDs,
907 * registers, or fixing the Ethernet multicast bit. Otherwise, it's better to
908 * use OpenFlow 1.0 protocol for backward compatibility. */
909 enum ofputil_protocol
910 ofputil_usable_protocols(const struct match *match)
912 const struct flow_wildcards *wc = &match->wc;
914 BUILD_ASSERT_DECL(FLOW_WC_SEQ == 18);
916 /* tunnel params other than tun_id can't be sent in a flow_mod */
917 if (!tun_parms_fully_wildcarded(wc)) {
921 /* skb_mark and skb_priority can't be sent in a flow_mod */
922 if (wc->masks.skb_mark || wc->masks.skb_priority) {
926 /* NXM and OF1.1+ supports bitwise matching on ethernet addresses. */
927 if (!eth_mask_is_exact(wc->masks.dl_src)
928 && !eth_addr_is_zero(wc->masks.dl_src)) {
929 return OFPUTIL_P_NXM_ANY;
931 if (!eth_mask_is_exact(wc->masks.dl_dst)
932 && !eth_addr_is_zero(wc->masks.dl_dst)) {
933 return OFPUTIL_P_NXM_ANY;
936 /* NXM and OF1.1+ support matching metadata. */
937 if (wc->masks.metadata != htonll(0)) {
938 return OFPUTIL_P_NXM_ANY;
941 /* Only NXM supports matching ARP hardware addresses. */
942 if (!eth_addr_is_zero(wc->masks.arp_sha) ||
943 !eth_addr_is_zero(wc->masks.arp_tha)) {
944 return OFPUTIL_P_NXM_ANY;
947 /* Only NXM supports matching IPv6 traffic. */
948 if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
949 return OFPUTIL_P_NXM_ANY;
952 /* Only NXM supports matching registers. */
953 if (!regs_fully_wildcarded(wc)) {
954 return OFPUTIL_P_NXM_ANY;
957 /* Only NXM supports matching tun_id. */
958 if (wc->masks.tunnel.tun_id != htonll(0)) {
959 return OFPUTIL_P_NXM_ANY;
962 /* Only NXM supports matching fragments. */
963 if (wc->masks.nw_frag) {
964 return OFPUTIL_P_NXM_ANY;
967 /* Only NXM supports matching IPv6 flow label. */
968 if (wc->masks.ipv6_label) {
969 return OFPUTIL_P_NXM_ANY;
972 /* Only NXM supports matching IP ECN bits. */
973 if (wc->masks.nw_tos & IP_ECN_MASK) {
974 return OFPUTIL_P_NXM_ANY;
977 /* Only NXM supports matching IP TTL/hop limit. */
978 if (wc->masks.nw_ttl) {
979 return OFPUTIL_P_NXM_ANY;
982 /* Only NXM supports non-CIDR IPv4 address masks. */
983 if (!ip_is_cidr(wc->masks.nw_src) || !ip_is_cidr(wc->masks.nw_dst)) {
984 return OFPUTIL_P_NXM_ANY;
987 /* Only NXM supports bitwise matching on transport port. */
988 if ((wc->masks.tp_src && wc->masks.tp_src != htons(UINT16_MAX)) ||
989 (wc->masks.tp_dst && wc->masks.tp_dst != htons(UINT16_MAX))) {
990 return OFPUTIL_P_NXM_ANY;
993 /* Other formats can express this rule. */
994 return OFPUTIL_P_ANY;
997 /* Returns an OpenFlow message that, sent on an OpenFlow connection whose
998 * protocol is 'current', at least partly transitions the protocol to 'want'.
999 * Stores in '*next' the protocol that will be in effect on the OpenFlow
1000 * connection if the switch processes the returned message correctly. (If
1001 * '*next != want' then the caller will have to iterate.)
1003 * If 'current == want', returns NULL and stores 'current' in '*next'. */
1005 ofputil_encode_set_protocol(enum ofputil_protocol current,
1006 enum ofputil_protocol want,
1007 enum ofputil_protocol *next)
1009 enum ofputil_protocol cur_base, want_base;
1010 bool cur_tid, want_tid;
1012 cur_base = ofputil_protocol_to_base(current);
1013 want_base = ofputil_protocol_to_base(want);
1014 if (cur_base != want_base) {
1015 *next = ofputil_protocol_set_base(current, want_base);
1017 switch (want_base) {
1019 return ofputil_encode_nx_set_flow_format(NXFF_NXM);
1021 case OFPUTIL_P_OF10:
1022 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW10);
1024 case OFPUTIL_P_OF12:
1025 return ofputil_encode_nx_set_flow_format(NXFF_OPENFLOW12);
1027 case OFPUTIL_P_OF10_TID:
1028 case OFPUTIL_P_NXM_TID:
1033 cur_tid = (current & OFPUTIL_P_TID) != 0;
1034 want_tid = (want & OFPUTIL_P_TID) != 0;
1035 if (cur_tid != want_tid) {
1036 *next = ofputil_protocol_set_tid(current, want_tid);
1037 return ofputil_make_flow_mod_table_id(want_tid);
1040 assert(current == want);
1046 /* Returns an NXT_SET_FLOW_FORMAT message that can be used to set the flow
1047 * format to 'nxff'. */
1049 ofputil_encode_nx_set_flow_format(enum nx_flow_format nxff)
1051 struct nx_set_flow_format *sff;
1054 assert(ofputil_nx_flow_format_is_valid(nxff));
1056 msg = ofpraw_alloc(OFPRAW_NXT_SET_FLOW_FORMAT, OFP10_VERSION, 0);
1057 sff = ofpbuf_put_zeros(msg, sizeof *sff);
1058 sff->format = htonl(nxff);
1063 /* Returns the base protocol if 'flow_format' is a valid NXFF_* value, false
1065 enum ofputil_protocol
1066 ofputil_nx_flow_format_to_protocol(enum nx_flow_format flow_format)
1068 switch (flow_format) {
1069 case NXFF_OPENFLOW10:
1070 return OFPUTIL_P_OF10;
1073 return OFPUTIL_P_NXM;
1075 case NXFF_OPENFLOW12:
1076 return OFPUTIL_P_OF12;
1083 /* Returns true if 'flow_format' is a valid NXFF_* value, false otherwise. */
1085 ofputil_nx_flow_format_is_valid(enum nx_flow_format flow_format)
1087 return ofputil_nx_flow_format_to_protocol(flow_format) != 0;
1090 /* Returns a string version of 'flow_format', which must be a valid NXFF_*
1093 ofputil_nx_flow_format_to_string(enum nx_flow_format flow_format)
1095 switch (flow_format) {
1096 case NXFF_OPENFLOW10:
1097 return "openflow10";
1100 case NXFF_OPENFLOW12:
1101 return "openflow12";
1108 ofputil_make_set_packet_in_format(enum ofp_version ofp_version,
1109 enum nx_packet_in_format packet_in_format)
1111 struct nx_set_packet_in_format *spif;
1114 msg = ofpraw_alloc(OFPRAW_NXT_SET_PACKET_IN_FORMAT, ofp_version, 0);
1115 spif = ofpbuf_put_zeros(msg, sizeof *spif);
1116 spif->format = htonl(packet_in_format);
1121 /* Returns an OpenFlow message that can be used to turn the flow_mod_table_id
1122 * extension on or off (according to 'flow_mod_table_id'). */
1124 ofputil_make_flow_mod_table_id(bool flow_mod_table_id)
1126 struct nx_flow_mod_table_id *nfmti;
1129 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD_TABLE_ID, OFP10_VERSION, 0);
1130 nfmti = ofpbuf_put_zeros(msg, sizeof *nfmti);
1131 nfmti->set = flow_mod_table_id;
1135 /* Converts an OFPT_FLOW_MOD or NXT_FLOW_MOD message 'oh' into an abstract
1136 * flow_mod in 'fm'. Returns 0 if successful, otherwise an OpenFlow error
1139 * Uses 'ofpacts' to store the abstract OFPACT_* version of 'oh''s actions.
1140 * The caller must initialize 'ofpacts' and retains ownership of it.
1141 * 'fm->ofpacts' will point into the 'ofpacts' buffer.
1143 * Does not validate the flow_mod actions. The caller should do that, with
1144 * ofpacts_check(). */
1146 ofputil_decode_flow_mod(struct ofputil_flow_mod *fm,
1147 const struct ofp_header *oh,
1148 enum ofputil_protocol protocol,
1149 struct ofpbuf *ofpacts)
1155 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1156 raw = ofpraw_pull_assert(&b);
1157 if (raw == OFPRAW_OFPT11_FLOW_MOD) {
1158 /* Standard OpenFlow 1.1 flow_mod. */
1159 const struct ofp11_flow_mod *ofm;
1162 ofm = ofpbuf_pull(&b, sizeof *ofm);
1164 error = ofputil_pull_ofp11_match(&b, &fm->match, NULL);
1169 error = ofpacts_pull_openflow11_instructions(&b, b.size, ofpacts);
1174 /* Translate the message. */
1175 fm->priority = ntohs(ofm->priority);
1176 if (ofm->command == OFPFC_ADD) {
1177 fm->cookie = htonll(0);
1178 fm->cookie_mask = htonll(0);
1179 fm->new_cookie = ofm->cookie;
1181 fm->cookie = ofm->cookie;
1182 fm->cookie_mask = ofm->cookie_mask;
1183 fm->new_cookie = htonll(UINT64_MAX);
1185 fm->command = ofm->command;
1186 fm->table_id = ofm->table_id;
1187 fm->idle_timeout = ntohs(ofm->idle_timeout);
1188 fm->hard_timeout = ntohs(ofm->hard_timeout);
1189 fm->buffer_id = ntohl(ofm->buffer_id);
1190 error = ofputil_port_from_ofp11(ofm->out_port, &fm->out_port);
1194 if (ofm->out_group != htonl(OFPG_ANY)) {
1195 return OFPERR_OFPFMFC_UNKNOWN;
1197 fm->flags = ntohs(ofm->flags);
1199 if (raw == OFPRAW_OFPT10_FLOW_MOD) {
1200 /* Standard OpenFlow 1.0 flow_mod. */
1201 const struct ofp10_flow_mod *ofm;
1204 /* Get the ofp10_flow_mod. */
1205 ofm = ofpbuf_pull(&b, sizeof *ofm);
1207 /* Translate the rule. */
1208 ofputil_match_from_ofp10_match(&ofm->match, &fm->match);
1209 ofputil_normalize_match(&fm->match);
1211 /* Now get the actions. */
1212 error = ofpacts_pull_openflow10(&b, b.size, ofpacts);
1217 /* OpenFlow 1.0 says that exact-match rules have to have the
1218 * highest possible priority. */
1219 fm->priority = (ofm->match.wildcards & htonl(OFPFW10_ALL)
1220 ? ntohs(ofm->priority)
1223 /* Translate the message. */
1224 command = ntohs(ofm->command);
1225 fm->cookie = htonll(0);
1226 fm->cookie_mask = htonll(0);
1227 fm->new_cookie = ofm->cookie;
1228 fm->idle_timeout = ntohs(ofm->idle_timeout);
1229 fm->hard_timeout = ntohs(ofm->hard_timeout);
1230 fm->buffer_id = ntohl(ofm->buffer_id);
1231 fm->out_port = ntohs(ofm->out_port);
1232 fm->flags = ntohs(ofm->flags);
1233 } else if (raw == OFPRAW_NXT_FLOW_MOD) {
1234 /* Nicira extended flow_mod. */
1235 const struct nx_flow_mod *nfm;
1238 /* Dissect the message. */
1239 nfm = ofpbuf_pull(&b, sizeof *nfm);
1240 error = nx_pull_match(&b, ntohs(nfm->match_len),
1241 &fm->match, &fm->cookie, &fm->cookie_mask);
1245 error = ofpacts_pull_openflow10(&b, b.size, ofpacts);
1250 /* Translate the message. */
1251 command = ntohs(nfm->command);
1252 if ((command & 0xff) == OFPFC_ADD && fm->cookie_mask) {
1253 /* Flow additions may only set a new cookie, not match an
1254 * existing cookie. */
1255 return OFPERR_NXBRC_NXM_INVALID;
1257 fm->priority = ntohs(nfm->priority);
1258 fm->new_cookie = nfm->cookie;
1259 fm->idle_timeout = ntohs(nfm->idle_timeout);
1260 fm->hard_timeout = ntohs(nfm->hard_timeout);
1261 fm->buffer_id = ntohl(nfm->buffer_id);
1262 fm->out_port = ntohs(nfm->out_port);
1263 fm->flags = ntohs(nfm->flags);
1268 if (protocol & OFPUTIL_P_TID) {
1269 fm->command = command & 0xff;
1270 fm->table_id = command >> 8;
1272 fm->command = command;
1273 fm->table_id = 0xff;
1277 fm->ofpacts = ofpacts->data;
1278 fm->ofpacts_len = ofpacts->size;
1284 ofputil_tid_command(const struct ofputil_flow_mod *fm,
1285 enum ofputil_protocol protocol)
1287 return htons(protocol & OFPUTIL_P_TID
1288 ? (fm->command & 0xff) | (fm->table_id << 8)
1292 /* Converts 'fm' into an OFPT_FLOW_MOD or NXT_FLOW_MOD message according to
1293 * 'protocol' and returns the message. */
1295 ofputil_encode_flow_mod(const struct ofputil_flow_mod *fm,
1296 enum ofputil_protocol protocol)
1301 case OFPUTIL_P_OF12: {
1302 struct ofp11_flow_mod *ofm;
1304 msg = ofpraw_alloc(OFPRAW_OFPT11_FLOW_MOD, OFP12_VERSION,
1305 NXM_TYPICAL_LEN + fm->ofpacts_len);
1306 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
1307 if (fm->command == OFPFC_ADD) {
1308 ofm->cookie = fm->new_cookie;
1310 ofm->cookie = fm->cookie;
1312 ofm->cookie_mask = fm->cookie_mask;
1313 ofm->table_id = fm->table_id;
1314 ofm->command = fm->command;
1315 ofm->idle_timeout = htons(fm->idle_timeout);
1316 ofm->hard_timeout = htons(fm->hard_timeout);
1317 ofm->priority = htons(fm->priority);
1318 ofm->buffer_id = htonl(fm->buffer_id);
1319 ofm->out_port = ofputil_port_to_ofp11(fm->out_port);
1320 ofm->out_group = htonl(OFPG11_ANY);
1321 ofm->flags = htons(fm->flags);
1322 oxm_put_match(msg, &fm->match);
1323 ofpacts_put_openflow11_instructions(fm->ofpacts, fm->ofpacts_len, msg);
1327 case OFPUTIL_P_OF10:
1328 case OFPUTIL_P_OF10_TID: {
1329 struct ofp10_flow_mod *ofm;
1331 msg = ofpraw_alloc(OFPRAW_OFPT10_FLOW_MOD, OFP10_VERSION,
1333 ofm = ofpbuf_put_zeros(msg, sizeof *ofm);
1334 ofputil_match_to_ofp10_match(&fm->match, &ofm->match);
1335 ofm->cookie = fm->new_cookie;
1336 ofm->command = ofputil_tid_command(fm, protocol);
1337 ofm->idle_timeout = htons(fm->idle_timeout);
1338 ofm->hard_timeout = htons(fm->hard_timeout);
1339 ofm->priority = htons(fm->priority);
1340 ofm->buffer_id = htonl(fm->buffer_id);
1341 ofm->out_port = htons(fm->out_port);
1342 ofm->flags = htons(fm->flags);
1343 ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg);
1348 case OFPUTIL_P_NXM_TID: {
1349 struct nx_flow_mod *nfm;
1352 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MOD, OFP10_VERSION,
1353 NXM_TYPICAL_LEN + fm->ofpacts_len);
1354 nfm = ofpbuf_put_zeros(msg, sizeof *nfm);
1355 nfm->command = ofputil_tid_command(fm, protocol);
1356 nfm->cookie = fm->new_cookie;
1357 match_len = nx_put_match(msg, &fm->match, fm->cookie, fm->cookie_mask);
1359 nfm->idle_timeout = htons(fm->idle_timeout);
1360 nfm->hard_timeout = htons(fm->hard_timeout);
1361 nfm->priority = htons(fm->priority);
1362 nfm->buffer_id = htonl(fm->buffer_id);
1363 nfm->out_port = htons(fm->out_port);
1364 nfm->flags = htons(fm->flags);
1365 nfm->match_len = htons(match_len);
1366 ofpacts_put_openflow10(fm->ofpacts, fm->ofpacts_len, msg);
1374 ofpmsg_update_length(msg);
1378 /* Returns a bitmask with a 1-bit for each protocol that could be used to
1379 * send all of the 'n_fm's flow table modification requests in 'fms', and a
1380 * 0-bit for each protocol that is inadequate.
1382 * (The return value will have at least one 1-bit.) */
1383 enum ofputil_protocol
1384 ofputil_flow_mod_usable_protocols(const struct ofputil_flow_mod *fms,
1387 enum ofputil_protocol usable_protocols;
1390 usable_protocols = OFPUTIL_P_ANY;
1391 for (i = 0; i < n_fms; i++) {
1392 const struct ofputil_flow_mod *fm = &fms[i];
1394 usable_protocols &= ofputil_usable_protocols(&fm->match);
1395 if (fm->table_id != 0xff) {
1396 usable_protocols &= OFPUTIL_P_TID;
1399 /* Matching of the cookie is only supported through NXM. */
1400 if (fm->cookie_mask != htonll(0)) {
1401 usable_protocols &= OFPUTIL_P_NXM_ANY;
1405 return usable_protocols;
1409 ofputil_decode_ofpst10_flow_request(struct ofputil_flow_stats_request *fsr,
1410 const struct ofp10_flow_stats_request *ofsr,
1413 fsr->aggregate = aggregate;
1414 ofputil_match_from_ofp10_match(&ofsr->match, &fsr->match);
1415 fsr->out_port = ntohs(ofsr->out_port);
1416 fsr->table_id = ofsr->table_id;
1417 fsr->cookie = fsr->cookie_mask = htonll(0);
1423 ofputil_decode_ofpst11_flow_request(struct ofputil_flow_stats_request *fsr,
1424 struct ofpbuf *b, bool aggregate)
1426 const struct ofp11_flow_stats_request *ofsr;
1429 ofsr = ofpbuf_pull(b, sizeof *ofsr);
1430 fsr->aggregate = aggregate;
1431 fsr->table_id = ofsr->table_id;
1432 error = ofputil_port_from_ofp11(ofsr->out_port, &fsr->out_port);
1436 if (ofsr->out_group != htonl(OFPG11_ANY)) {
1437 return OFPERR_OFPFMFC_UNKNOWN;
1439 fsr->cookie = ofsr->cookie;
1440 fsr->cookie_mask = ofsr->cookie_mask;
1441 error = ofputil_pull_ofp11_match(b, &fsr->match, NULL);
1450 ofputil_decode_nxst_flow_request(struct ofputil_flow_stats_request *fsr,
1451 struct ofpbuf *b, bool aggregate)
1453 const struct nx_flow_stats_request *nfsr;
1456 nfsr = ofpbuf_pull(b, sizeof *nfsr);
1457 error = nx_pull_match(b, ntohs(nfsr->match_len), &fsr->match,
1458 &fsr->cookie, &fsr->cookie_mask);
1463 return OFPERR_OFPBRC_BAD_LEN;
1466 fsr->aggregate = aggregate;
1467 fsr->out_port = ntohs(nfsr->out_port);
1468 fsr->table_id = nfsr->table_id;
1473 /* Converts an OFPST_FLOW, OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE
1474 * request 'oh', into an abstract flow_stats_request in 'fsr'. Returns 0 if
1475 * successful, otherwise an OpenFlow error code. */
1477 ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *fsr,
1478 const struct ofp_header *oh)
1483 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1484 raw = ofpraw_pull_assert(&b);
1485 switch ((int) raw) {
1486 case OFPRAW_OFPST10_FLOW_REQUEST:
1487 return ofputil_decode_ofpst10_flow_request(fsr, b.data, false);
1489 case OFPRAW_OFPST10_AGGREGATE_REQUEST:
1490 return ofputil_decode_ofpst10_flow_request(fsr, b.data, true);
1492 case OFPRAW_OFPST11_FLOW_REQUEST:
1493 return ofputil_decode_ofpst11_flow_request(fsr, &b, false);
1495 case OFPRAW_OFPST11_AGGREGATE_REQUEST:
1496 return ofputil_decode_ofpst11_flow_request(fsr, &b, true);
1498 case OFPRAW_NXST_FLOW_REQUEST:
1499 return ofputil_decode_nxst_flow_request(fsr, &b, false);
1501 case OFPRAW_NXST_AGGREGATE_REQUEST:
1502 return ofputil_decode_nxst_flow_request(fsr, &b, true);
1505 /* Hey, the caller lied. */
1510 /* Converts abstract flow_stats_request 'fsr' into an OFPST_FLOW,
1511 * OFPST_AGGREGATE, NXST_FLOW, or NXST_AGGREGATE request 'oh' according to
1512 * 'protocol', and returns the message. */
1514 ofputil_encode_flow_stats_request(const struct ofputil_flow_stats_request *fsr,
1515 enum ofputil_protocol protocol)
1521 case OFPUTIL_P_OF12: {
1522 struct ofp11_flow_stats_request *ofsr;
1524 raw = (fsr->aggregate
1525 ? OFPRAW_OFPST11_AGGREGATE_REQUEST
1526 : OFPRAW_OFPST11_FLOW_REQUEST);
1527 msg = ofpraw_alloc(raw, OFP12_VERSION, NXM_TYPICAL_LEN);
1528 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
1529 ofsr->table_id = fsr->table_id;
1530 ofsr->out_port = ofputil_port_to_ofp11(fsr->out_port);
1531 ofsr->out_group = htonl(OFPG11_ANY);
1532 ofsr->cookie = fsr->cookie;
1533 ofsr->cookie_mask = fsr->cookie_mask;
1534 oxm_put_match(msg, &fsr->match);
1538 case OFPUTIL_P_OF10:
1539 case OFPUTIL_P_OF10_TID: {
1540 struct ofp10_flow_stats_request *ofsr;
1542 raw = (fsr->aggregate
1543 ? OFPRAW_OFPST10_AGGREGATE_REQUEST
1544 : OFPRAW_OFPST10_FLOW_REQUEST);
1545 msg = ofpraw_alloc(raw, OFP10_VERSION, 0);
1546 ofsr = ofpbuf_put_zeros(msg, sizeof *ofsr);
1547 ofputil_match_to_ofp10_match(&fsr->match, &ofsr->match);
1548 ofsr->table_id = fsr->table_id;
1549 ofsr->out_port = htons(fsr->out_port);
1554 case OFPUTIL_P_NXM_TID: {
1555 struct nx_flow_stats_request *nfsr;
1558 raw = (fsr->aggregate
1559 ? OFPRAW_NXST_AGGREGATE_REQUEST
1560 : OFPRAW_NXST_FLOW_REQUEST);
1561 msg = ofpraw_alloc(raw, OFP10_VERSION, NXM_TYPICAL_LEN);
1562 ofpbuf_put_zeros(msg, sizeof *nfsr);
1563 match_len = nx_put_match(msg, &fsr->match,
1564 fsr->cookie, fsr->cookie_mask);
1567 nfsr->out_port = htons(fsr->out_port);
1568 nfsr->match_len = htons(match_len);
1569 nfsr->table_id = fsr->table_id;
1580 /* Returns a bitmask with a 1-bit for each protocol that could be used to
1581 * accurately encode 'fsr', and a 0-bit for each protocol that is inadequate.
1583 * (The return value will have at least one 1-bit.) */
1584 enum ofputil_protocol
1585 ofputil_flow_stats_request_usable_protocols(
1586 const struct ofputil_flow_stats_request *fsr)
1588 enum ofputil_protocol usable_protocols;
1590 usable_protocols = ofputil_usable_protocols(&fsr->match);
1591 if (fsr->cookie_mask != htonll(0)) {
1592 usable_protocols &= OFPUTIL_P_NXM_ANY;
1594 return usable_protocols;
1597 /* Converts an OFPST_FLOW or NXST_FLOW reply in 'msg' into an abstract
1598 * ofputil_flow_stats in 'fs'.
1600 * Multiple OFPST_FLOW or NXST_FLOW replies can be packed into a single
1601 * OpenFlow message. Calling this function multiple times for a single 'msg'
1602 * iterates through the replies. The caller must initially leave 'msg''s layer
1603 * pointers null and not modify them between calls.
1605 * Most switches don't send the values needed to populate fs->idle_age and
1606 * fs->hard_age, so those members will usually be set to 0. If the switch from
1607 * which 'msg' originated is known to implement NXT_FLOW_AGE, then pass
1608 * 'flow_age_extension' as true so that the contents of 'msg' determine the
1609 * 'idle_age' and 'hard_age' members in 'fs'.
1611 * Uses 'ofpacts' to store the abstract OFPACT_* version of the flow stats
1612 * reply's actions. The caller must initialize 'ofpacts' and retains ownership
1613 * of it. 'fs->ofpacts' will point into the 'ofpacts' buffer.
1615 * Returns 0 if successful, EOF if no replies were left in this 'msg',
1616 * otherwise a positive errno value. */
1618 ofputil_decode_flow_stats_reply(struct ofputil_flow_stats *fs,
1620 bool flow_age_extension,
1621 struct ofpbuf *ofpacts)
1627 ? ofpraw_decode(&raw, msg->l2)
1628 : ofpraw_pull(&raw, msg));
1635 } else if (raw == OFPRAW_OFPST11_FLOW_REPLY) {
1636 const struct ofp11_flow_stats *ofs;
1638 uint16_t padded_match_len;
1640 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
1642 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover "
1643 "bytes at end", msg->size);
1647 length = ntohs(ofs->length);
1648 if (length < sizeof *ofs) {
1649 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
1650 "length %zu", length);
1654 if (ofputil_pull_ofp11_match(msg, &fs->match, &padded_match_len)) {
1655 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad match");
1659 if (ofpacts_pull_openflow11_instructions(msg, length - sizeof *ofs -
1660 padded_match_len, ofpacts)) {
1661 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply bad instructions");
1665 fs->priority = ntohs(ofs->priority);
1666 fs->table_id = ofs->table_id;
1667 fs->duration_sec = ntohl(ofs->duration_sec);
1668 fs->duration_nsec = ntohl(ofs->duration_nsec);
1669 fs->idle_timeout = ntohs(ofs->idle_timeout);
1670 fs->hard_timeout = ntohs(ofs->hard_timeout);
1673 fs->cookie = ofs->cookie;
1674 fs->packet_count = ntohll(ofs->packet_count);
1675 fs->byte_count = ntohll(ofs->byte_count);
1676 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
1677 const struct ofp10_flow_stats *ofs;
1680 ofs = ofpbuf_try_pull(msg, sizeof *ofs);
1682 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply has %zu leftover "
1683 "bytes at end", msg->size);
1687 length = ntohs(ofs->length);
1688 if (length < sizeof *ofs) {
1689 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_FLOW reply claims invalid "
1690 "length %zu", length);
1694 if (ofpacts_pull_openflow10(msg, length - sizeof *ofs, ofpacts)) {
1698 fs->cookie = get_32aligned_be64(&ofs->cookie);
1699 ofputil_match_from_ofp10_match(&ofs->match, &fs->match);
1700 fs->priority = ntohs(ofs->priority);
1701 fs->table_id = ofs->table_id;
1702 fs->duration_sec = ntohl(ofs->duration_sec);
1703 fs->duration_nsec = ntohl(ofs->duration_nsec);
1704 fs->idle_timeout = ntohs(ofs->idle_timeout);
1705 fs->hard_timeout = ntohs(ofs->hard_timeout);
1708 fs->packet_count = ntohll(get_32aligned_be64(&ofs->packet_count));
1709 fs->byte_count = ntohll(get_32aligned_be64(&ofs->byte_count));
1710 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
1711 const struct nx_flow_stats *nfs;
1712 size_t match_len, actions_len, length;
1714 nfs = ofpbuf_try_pull(msg, sizeof *nfs);
1716 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply has %zu leftover "
1717 "bytes at end", msg->size);
1721 length = ntohs(nfs->length);
1722 match_len = ntohs(nfs->match_len);
1723 if (length < sizeof *nfs + ROUND_UP(match_len, 8)) {
1724 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW reply with match_len=%zu "
1725 "claims invalid length %zu", match_len, length);
1728 if (nx_pull_match(msg, match_len, &fs->match, NULL, NULL)) {
1732 actions_len = length - sizeof *nfs - ROUND_UP(match_len, 8);
1733 if (ofpacts_pull_openflow10(msg, actions_len, ofpacts)) {
1737 fs->cookie = nfs->cookie;
1738 fs->table_id = nfs->table_id;
1739 fs->duration_sec = ntohl(nfs->duration_sec);
1740 fs->duration_nsec = ntohl(nfs->duration_nsec);
1741 fs->priority = ntohs(nfs->priority);
1742 fs->idle_timeout = ntohs(nfs->idle_timeout);
1743 fs->hard_timeout = ntohs(nfs->hard_timeout);
1746 if (flow_age_extension) {
1747 if (nfs->idle_age) {
1748 fs->idle_age = ntohs(nfs->idle_age) - 1;
1750 if (nfs->hard_age) {
1751 fs->hard_age = ntohs(nfs->hard_age) - 1;
1754 fs->packet_count = ntohll(nfs->packet_count);
1755 fs->byte_count = ntohll(nfs->byte_count);
1760 fs->ofpacts = ofpacts->data;
1761 fs->ofpacts_len = ofpacts->size;
1766 /* Returns 'count' unchanged except that UINT64_MAX becomes 0.
1768 * We use this in situations where OVS internally uses UINT64_MAX to mean
1769 * "value unknown" but OpenFlow 1.0 does not define any unknown value. */
1771 unknown_to_zero(uint64_t count)
1773 return count != UINT64_MAX ? count : 0;
1776 /* Appends an OFPST_FLOW or NXST_FLOW reply that contains the data in 'fs' to
1777 * those already present in the list of ofpbufs in 'replies'. 'replies' should
1778 * have been initialized with ofputil_start_stats_reply(). */
1780 ofputil_append_flow_stats_reply(const struct ofputil_flow_stats *fs,
1781 struct list *replies)
1783 struct ofpbuf *reply = ofpbuf_from_list(list_back(replies));
1784 size_t start_ofs = reply->size;
1787 ofpraw_decode_partial(&raw, reply->data, reply->size);
1788 if (raw == OFPRAW_OFPST11_FLOW_REPLY) {
1789 struct ofp11_flow_stats *ofs;
1791 ofpbuf_put_uninit(reply, sizeof *ofs);
1792 oxm_put_match(reply, &fs->match);
1793 ofpacts_put_openflow11_instructions(fs->ofpacts, fs->ofpacts_len,
1796 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
1797 ofs->length = htons(reply->size - start_ofs);
1798 ofs->table_id = fs->table_id;
1800 ofs->duration_sec = htonl(fs->duration_sec);
1801 ofs->duration_nsec = htonl(fs->duration_nsec);
1802 ofs->priority = htons(fs->priority);
1803 ofs->idle_timeout = htons(fs->idle_timeout);
1804 ofs->hard_timeout = htons(fs->hard_timeout);
1805 memset(ofs->pad2, 0, sizeof ofs->pad2);
1806 ofs->cookie = fs->cookie;
1807 ofs->packet_count = htonll(unknown_to_zero(fs->packet_count));
1808 ofs->byte_count = htonll(unknown_to_zero(fs->byte_count));
1809 } else if (raw == OFPRAW_OFPST10_FLOW_REPLY) {
1810 struct ofp10_flow_stats *ofs;
1812 ofpbuf_put_uninit(reply, sizeof *ofs);
1813 ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply);
1815 ofs = ofpbuf_at_assert(reply, start_ofs, sizeof *ofs);
1816 ofs->length = htons(reply->size - start_ofs);
1817 ofs->table_id = fs->table_id;
1819 ofputil_match_to_ofp10_match(&fs->match, &ofs->match);
1820 ofs->duration_sec = htonl(fs->duration_sec);
1821 ofs->duration_nsec = htonl(fs->duration_nsec);
1822 ofs->priority = htons(fs->priority);
1823 ofs->idle_timeout = htons(fs->idle_timeout);
1824 ofs->hard_timeout = htons(fs->hard_timeout);
1825 memset(ofs->pad2, 0, sizeof ofs->pad2);
1826 put_32aligned_be64(&ofs->cookie, fs->cookie);
1827 put_32aligned_be64(&ofs->packet_count,
1828 htonll(unknown_to_zero(fs->packet_count)));
1829 put_32aligned_be64(&ofs->byte_count,
1830 htonll(unknown_to_zero(fs->byte_count)));
1831 } else if (raw == OFPRAW_NXST_FLOW_REPLY) {
1832 struct nx_flow_stats *nfs;
1835 ofpbuf_put_uninit(reply, sizeof *nfs);
1836 match_len = nx_put_match(reply, &fs->match, 0, 0);
1837 ofpacts_put_openflow10(fs->ofpacts, fs->ofpacts_len, reply);
1839 nfs = ofpbuf_at_assert(reply, start_ofs, sizeof *nfs);
1840 nfs->length = htons(reply->size - start_ofs);
1841 nfs->table_id = fs->table_id;
1843 nfs->duration_sec = htonl(fs->duration_sec);
1844 nfs->duration_nsec = htonl(fs->duration_nsec);
1845 nfs->priority = htons(fs->priority);
1846 nfs->idle_timeout = htons(fs->idle_timeout);
1847 nfs->hard_timeout = htons(fs->hard_timeout);
1848 nfs->idle_age = htons(fs->idle_age < 0 ? 0
1849 : fs->idle_age < UINT16_MAX ? fs->idle_age + 1
1851 nfs->hard_age = htons(fs->hard_age < 0 ? 0
1852 : fs->hard_age < UINT16_MAX ? fs->hard_age + 1
1854 nfs->match_len = htons(match_len);
1855 nfs->cookie = fs->cookie;
1856 nfs->packet_count = htonll(fs->packet_count);
1857 nfs->byte_count = htonll(fs->byte_count);
1862 ofpmp_postappend(replies, start_ofs);
1865 /* Converts abstract ofputil_aggregate_stats 'stats' into an OFPST_AGGREGATE or
1866 * NXST_AGGREGATE reply matching 'request', and returns the message. */
1868 ofputil_encode_aggregate_stats_reply(
1869 const struct ofputil_aggregate_stats *stats,
1870 const struct ofp_header *request)
1872 struct ofp_aggregate_stats_reply *asr;
1873 uint64_t packet_count;
1874 uint64_t byte_count;
1878 ofpraw_decode(&raw, request);
1879 if (raw == OFPRAW_OFPST10_AGGREGATE_REQUEST) {
1880 packet_count = unknown_to_zero(stats->packet_count);
1881 byte_count = unknown_to_zero(stats->byte_count);
1883 packet_count = stats->packet_count;
1884 byte_count = stats->byte_count;
1887 msg = ofpraw_alloc_stats_reply(request, 0);
1888 asr = ofpbuf_put_zeros(msg, sizeof *asr);
1889 put_32aligned_be64(&asr->packet_count, htonll(packet_count));
1890 put_32aligned_be64(&asr->byte_count, htonll(byte_count));
1891 asr->flow_count = htonl(stats->flow_count);
1897 ofputil_decode_aggregate_stats_reply(struct ofputil_aggregate_stats *stats,
1898 const struct ofp_header *reply)
1900 struct ofp_aggregate_stats_reply *asr;
1903 ofpbuf_use_const(&msg, reply, ntohs(reply->length));
1904 ofpraw_pull_assert(&msg);
1907 stats->packet_count = ntohll(get_32aligned_be64(&asr->packet_count));
1908 stats->byte_count = ntohll(get_32aligned_be64(&asr->byte_count));
1909 stats->flow_count = ntohl(asr->flow_count);
1914 /* Converts an OFPT_FLOW_REMOVED or NXT_FLOW_REMOVED message 'oh' into an
1915 * abstract ofputil_flow_removed in 'fr'. Returns 0 if successful, otherwise
1916 * an OpenFlow error code. */
1918 ofputil_decode_flow_removed(struct ofputil_flow_removed *fr,
1919 const struct ofp_header *oh)
1924 ofpbuf_use_const(&b, oh, ntohs(oh->length));
1925 raw = ofpraw_pull_assert(&b);
1926 if (raw == OFPRAW_OFPT11_FLOW_REMOVED) {
1927 const struct ofp12_flow_removed *ofr;
1930 ofr = ofpbuf_pull(&b, sizeof *ofr);
1932 error = ofputil_pull_ofp11_match(&b, &fr->match, NULL);
1937 fr->priority = ntohs(ofr->priority);
1938 fr->cookie = ofr->cookie;
1939 fr->reason = ofr->reason;
1940 fr->table_id = ofr->table_id;
1941 fr->duration_sec = ntohl(ofr->duration_sec);
1942 fr->duration_nsec = ntohl(ofr->duration_nsec);
1943 fr->idle_timeout = ntohs(ofr->idle_timeout);
1944 fr->hard_timeout = ntohs(ofr->hard_timeout);
1945 fr->packet_count = ntohll(ofr->packet_count);
1946 fr->byte_count = ntohll(ofr->byte_count);
1947 } else if (raw == OFPRAW_OFPT10_FLOW_REMOVED) {
1948 const struct ofp_flow_removed *ofr;
1950 ofr = ofpbuf_pull(&b, sizeof *ofr);
1952 ofputil_match_from_ofp10_match(&ofr->match, &fr->match);
1953 fr->priority = ntohs(ofr->priority);
1954 fr->cookie = ofr->cookie;
1955 fr->reason = ofr->reason;
1957 fr->duration_sec = ntohl(ofr->duration_sec);
1958 fr->duration_nsec = ntohl(ofr->duration_nsec);
1959 fr->idle_timeout = ntohs(ofr->idle_timeout);
1960 fr->hard_timeout = 0;
1961 fr->packet_count = ntohll(ofr->packet_count);
1962 fr->byte_count = ntohll(ofr->byte_count);
1963 } else if (raw == OFPRAW_NXT_FLOW_REMOVED) {
1964 struct nx_flow_removed *nfr;
1967 nfr = ofpbuf_pull(&b, sizeof *nfr);
1968 error = nx_pull_match(&b, ntohs(nfr->match_len), &fr->match,
1974 return OFPERR_OFPBRC_BAD_LEN;
1977 fr->priority = ntohs(nfr->priority);
1978 fr->cookie = nfr->cookie;
1979 fr->reason = nfr->reason;
1981 fr->duration_sec = ntohl(nfr->duration_sec);
1982 fr->duration_nsec = ntohl(nfr->duration_nsec);
1983 fr->idle_timeout = ntohs(nfr->idle_timeout);
1984 fr->hard_timeout = 0;
1985 fr->packet_count = ntohll(nfr->packet_count);
1986 fr->byte_count = ntohll(nfr->byte_count);
1994 /* Converts abstract ofputil_flow_removed 'fr' into an OFPT_FLOW_REMOVED or
1995 * NXT_FLOW_REMOVED message 'oh' according to 'protocol', and returns the
1998 ofputil_encode_flow_removed(const struct ofputil_flow_removed *fr,
1999 enum ofputil_protocol protocol)
2004 case OFPUTIL_P_OF12: {
2005 struct ofp12_flow_removed *ofr;
2007 msg = ofpraw_alloc_xid(OFPRAW_OFPT11_FLOW_REMOVED,
2008 ofputil_protocol_to_ofp_version(protocol),
2009 htonl(0), NXM_TYPICAL_LEN);
2010 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
2011 ofr->cookie = fr->cookie;
2012 ofr->priority = htons(fr->priority);
2013 ofr->reason = fr->reason;
2014 ofr->table_id = fr->table_id;
2015 ofr->duration_sec = htonl(fr->duration_sec);
2016 ofr->duration_nsec = htonl(fr->duration_nsec);
2017 ofr->idle_timeout = htons(fr->idle_timeout);
2018 ofr->hard_timeout = htons(fr->hard_timeout);
2019 ofr->packet_count = htonll(fr->packet_count);
2020 ofr->byte_count = htonll(fr->byte_count);
2021 oxm_put_match(msg, &fr->match);
2025 case OFPUTIL_P_OF10:
2026 case OFPUTIL_P_OF10_TID: {
2027 struct ofp_flow_removed *ofr;
2029 msg = ofpraw_alloc_xid(OFPRAW_OFPT10_FLOW_REMOVED, OFP10_VERSION,
2031 ofr = ofpbuf_put_zeros(msg, sizeof *ofr);
2032 ofputil_match_to_ofp10_match(&fr->match, &ofr->match);
2033 ofr->cookie = fr->cookie;
2034 ofr->priority = htons(fr->priority);
2035 ofr->reason = fr->reason;
2036 ofr->duration_sec = htonl(fr->duration_sec);
2037 ofr->duration_nsec = htonl(fr->duration_nsec);
2038 ofr->idle_timeout = htons(fr->idle_timeout);
2039 ofr->packet_count = htonll(unknown_to_zero(fr->packet_count));
2040 ofr->byte_count = htonll(unknown_to_zero(fr->byte_count));
2045 case OFPUTIL_P_NXM_TID: {
2046 struct nx_flow_removed *nfr;
2049 msg = ofpraw_alloc_xid(OFPRAW_NXT_FLOW_REMOVED, OFP10_VERSION,
2050 htonl(0), NXM_TYPICAL_LEN);
2051 nfr = ofpbuf_put_zeros(msg, sizeof *nfr);
2052 match_len = nx_put_match(msg, &fr->match, 0, 0);
2055 nfr->cookie = fr->cookie;
2056 nfr->priority = htons(fr->priority);
2057 nfr->reason = fr->reason;
2058 nfr->duration_sec = htonl(fr->duration_sec);
2059 nfr->duration_nsec = htonl(fr->duration_nsec);
2060 nfr->idle_timeout = htons(fr->idle_timeout);
2061 nfr->match_len = htons(match_len);
2062 nfr->packet_count = htonll(fr->packet_count);
2063 nfr->byte_count = htonll(fr->byte_count);
2075 ofputil_decode_packet_in_finish(struct ofputil_packet_in *pin,
2076 struct match *match, struct ofpbuf *b)
2078 pin->packet = b->data;
2079 pin->packet_len = b->size;
2081 pin->fmd.in_port = match->flow.in_port;
2082 pin->fmd.tun_id = match->flow.tunnel.tun_id;
2083 pin->fmd.metadata = match->flow.metadata;
2084 memcpy(pin->fmd.regs, match->flow.regs, sizeof pin->fmd.regs);
2088 ofputil_decode_packet_in(struct ofputil_packet_in *pin,
2089 const struct ofp_header *oh)
2094 memset(pin, 0, sizeof *pin);
2096 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2097 raw = ofpraw_pull_assert(&b);
2098 if (raw == OFPRAW_OFPT12_PACKET_IN) {
2099 const struct ofp12_packet_in *opi;
2103 opi = ofpbuf_pull(&b, sizeof *opi);
2104 error = oxm_pull_match_loose(&b, &match);
2109 if (!ofpbuf_try_pull(&b, 2)) {
2110 return OFPERR_OFPBRC_BAD_LEN;
2113 pin->reason = opi->reason;
2114 pin->table_id = opi->table_id;
2116 pin->buffer_id = ntohl(opi->buffer_id);
2117 pin->total_len = ntohs(opi->total_len);
2119 ofputil_decode_packet_in_finish(pin, &match, &b);
2120 } else if (raw == OFPRAW_OFPT10_PACKET_IN) {
2121 const struct ofp_packet_in *opi;
2123 opi = ofpbuf_pull(&b, offsetof(struct ofp_packet_in, data));
2125 pin->packet = opi->data;
2126 pin->packet_len = b.size;
2128 pin->fmd.in_port = ntohs(opi->in_port);
2129 pin->reason = opi->reason;
2130 pin->buffer_id = ntohl(opi->buffer_id);
2131 pin->total_len = ntohs(opi->total_len);
2132 } else if (raw == OFPRAW_NXT_PACKET_IN) {
2133 const struct nx_packet_in *npi;
2137 npi = ofpbuf_pull(&b, sizeof *npi);
2138 error = nx_pull_match_loose(&b, ntohs(npi->match_len), &match, NULL,
2144 if (!ofpbuf_try_pull(&b, 2)) {
2145 return OFPERR_OFPBRC_BAD_LEN;
2148 pin->reason = npi->reason;
2149 pin->table_id = npi->table_id;
2150 pin->cookie = npi->cookie;
2152 pin->buffer_id = ntohl(npi->buffer_id);
2153 pin->total_len = ntohs(npi->total_len);
2155 ofputil_decode_packet_in_finish(pin, &match, &b);
2164 ofputil_packet_in_to_match(const struct ofputil_packet_in *pin,
2165 struct match *match)
2169 match_init_catchall(match);
2170 if (pin->fmd.tun_id != htonll(0)) {
2171 match_set_tun_id(match, pin->fmd.tun_id);
2173 if (pin->fmd.metadata != htonll(0)) {
2174 match_set_metadata(match, pin->fmd.metadata);
2177 for (i = 0; i < FLOW_N_REGS; i++) {
2178 if (pin->fmd.regs[i]) {
2179 match_set_reg(match, i, pin->fmd.regs[i]);
2183 match_set_in_port(match, pin->fmd.in_port);
2186 /* Converts abstract ofputil_packet_in 'pin' into a PACKET_IN message
2187 * in the format specified by 'packet_in_format'. */
2189 ofputil_encode_packet_in(const struct ofputil_packet_in *pin,
2190 enum ofputil_protocol protocol,
2191 enum nx_packet_in_format packet_in_format)
2193 size_t send_len = MIN(pin->send_len, pin->packet_len);
2194 struct ofpbuf *packet;
2196 /* Add OFPT_PACKET_IN. */
2197 if (protocol == OFPUTIL_P_OF12) {
2198 struct ofp12_packet_in *opi;
2201 ofputil_packet_in_to_match(pin, &match);
2203 /* The final argument is just an estimate of the space required. */
2204 packet = ofpraw_alloc_xid(OFPRAW_OFPT12_PACKET_IN, OFP12_VERSION,
2205 htonl(0), (sizeof(struct flow_metadata) * 2
2207 ofpbuf_put_zeros(packet, sizeof *opi);
2208 oxm_put_match(packet, &match);
2209 ofpbuf_put_zeros(packet, 2);
2210 ofpbuf_put(packet, pin->packet, send_len);
2213 opi->buffer_id = htonl(pin->buffer_id);
2214 opi->total_len = htons(pin->total_len);
2215 opi->reason = pin->reason;
2216 opi->table_id = pin->table_id;
2217 } else if (packet_in_format == NXPIF_OPENFLOW10) {
2218 struct ofp_packet_in *opi;
2220 packet = ofpraw_alloc_xid(OFPRAW_OFPT10_PACKET_IN, OFP10_VERSION,
2221 htonl(0), send_len);
2222 opi = ofpbuf_put_zeros(packet, offsetof(struct ofp_packet_in, data));
2223 opi->total_len = htons(pin->total_len);
2224 opi->in_port = htons(pin->fmd.in_port);
2225 opi->reason = pin->reason;
2226 opi->buffer_id = htonl(pin->buffer_id);
2228 ofpbuf_put(packet, pin->packet, send_len);
2229 } else if (packet_in_format == NXPIF_NXM) {
2230 struct nx_packet_in *npi;
2234 ofputil_packet_in_to_match(pin, &match);
2236 /* The final argument is just an estimate of the space required. */
2237 packet = ofpraw_alloc_xid(OFPRAW_NXT_PACKET_IN, OFP10_VERSION,
2238 htonl(0), (sizeof(struct flow_metadata) * 2
2240 ofpbuf_put_zeros(packet, sizeof *npi);
2241 match_len = nx_put_match(packet, &match, 0, 0);
2242 ofpbuf_put_zeros(packet, 2);
2243 ofpbuf_put(packet, pin->packet, send_len);
2246 npi->buffer_id = htonl(pin->buffer_id);
2247 npi->total_len = htons(pin->total_len);
2248 npi->reason = pin->reason;
2249 npi->table_id = pin->table_id;
2250 npi->cookie = pin->cookie;
2251 npi->match_len = htons(match_len);
2255 ofpmsg_update_length(packet);
2261 ofputil_packet_in_reason_to_string(enum ofp_packet_in_reason reason)
2263 static char s[INT_STRLEN(int) + 1];
2270 case OFPR_INVALID_TTL:
2271 return "invalid_ttl";
2273 case OFPR_N_REASONS:
2275 sprintf(s, "%d", (int) reason);
2281 ofputil_packet_in_reason_from_string(const char *s,
2282 enum ofp_packet_in_reason *reason)
2286 for (i = 0; i < OFPR_N_REASONS; i++) {
2287 if (!strcasecmp(s, ofputil_packet_in_reason_to_string(i))) {
2295 /* Converts an OFPT_PACKET_OUT in 'opo' into an abstract ofputil_packet_out in
2298 * Uses 'ofpacts' to store the abstract OFPACT_* version of the packet out
2299 * message's actions. The caller must initialize 'ofpacts' and retains
2300 * ownership of it. 'po->ofpacts' will point into the 'ofpacts' buffer.
2302 * Returns 0 if successful, otherwise an OFPERR_* value. */
2304 ofputil_decode_packet_out(struct ofputil_packet_out *po,
2305 const struct ofp_header *oh,
2306 struct ofpbuf *ofpacts)
2311 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2312 raw = ofpraw_pull_assert(&b);
2314 if (raw == OFPRAW_OFPT11_PACKET_OUT) {
2316 const struct ofp11_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
2318 po->buffer_id = ntohl(opo->buffer_id);
2319 error = ofputil_port_from_ofp11(opo->in_port, &po->in_port);
2324 error = ofpacts_pull_openflow11_actions(&b, ntohs(opo->actions_len),
2329 } else if (raw == OFPRAW_OFPT10_PACKET_OUT) {
2331 const struct ofp_packet_out *opo = ofpbuf_pull(&b, sizeof *opo);
2333 po->buffer_id = ntohl(opo->buffer_id);
2334 po->in_port = ntohs(opo->in_port);
2336 error = ofpacts_pull_openflow10(&b, ntohs(opo->actions_len), ofpacts);
2344 if (po->in_port >= OFPP_MAX && po->in_port != OFPP_LOCAL
2345 && po->in_port != OFPP_NONE && po->in_port != OFPP_CONTROLLER) {
2346 VLOG_WARN_RL(&bad_ofmsg_rl, "packet-out has bad input port %#"PRIx16,
2348 return OFPERR_OFPBRC_BAD_PORT;
2351 po->ofpacts = ofpacts->data;
2352 po->ofpacts_len = ofpacts->size;
2354 if (po->buffer_id == UINT32_MAX) {
2355 po->packet = b.data;
2356 po->packet_len = b.size;
2365 /* ofputil_phy_port */
2367 /* NETDEV_F_* to and from OFPPF_* and OFPPF10_*. */
2368 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
2369 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
2370 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
2371 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
2372 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
2373 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
2374 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
2376 /* NETDEV_F_ bits 11...15 are OFPPF10_ bits 7...11: */
2377 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == (OFPPF10_COPPER << 4));
2378 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == (OFPPF10_FIBER << 4));
2379 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == (OFPPF10_AUTONEG << 4));
2380 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == (OFPPF10_PAUSE << 4));
2381 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == (OFPPF10_PAUSE_ASYM << 4));
2383 static enum netdev_features
2384 netdev_port_features_from_ofp10(ovs_be32 ofp10_)
2386 uint32_t ofp10 = ntohl(ofp10_);
2387 return (ofp10 & 0x7f) | ((ofp10 & 0xf80) << 4);
2391 netdev_port_features_to_ofp10(enum netdev_features features)
2393 return htonl((features & 0x7f) | ((features & 0xf800) >> 4));
2396 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_HD == OFPPF_10MB_HD); /* bit 0 */
2397 BUILD_ASSERT_DECL((int) NETDEV_F_10MB_FD == OFPPF_10MB_FD); /* bit 1 */
2398 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_HD == OFPPF_100MB_HD); /* bit 2 */
2399 BUILD_ASSERT_DECL((int) NETDEV_F_100MB_FD == OFPPF_100MB_FD); /* bit 3 */
2400 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_HD == OFPPF_1GB_HD); /* bit 4 */
2401 BUILD_ASSERT_DECL((int) NETDEV_F_1GB_FD == OFPPF_1GB_FD); /* bit 5 */
2402 BUILD_ASSERT_DECL((int) NETDEV_F_10GB_FD == OFPPF_10GB_FD); /* bit 6 */
2403 BUILD_ASSERT_DECL((int) NETDEV_F_40GB_FD == OFPPF11_40GB_FD); /* bit 7 */
2404 BUILD_ASSERT_DECL((int) NETDEV_F_100GB_FD == OFPPF11_100GB_FD); /* bit 8 */
2405 BUILD_ASSERT_DECL((int) NETDEV_F_1TB_FD == OFPPF11_1TB_FD); /* bit 9 */
2406 BUILD_ASSERT_DECL((int) NETDEV_F_OTHER == OFPPF11_OTHER); /* bit 10 */
2407 BUILD_ASSERT_DECL((int) NETDEV_F_COPPER == OFPPF11_COPPER); /* bit 11 */
2408 BUILD_ASSERT_DECL((int) NETDEV_F_FIBER == OFPPF11_FIBER); /* bit 12 */
2409 BUILD_ASSERT_DECL((int) NETDEV_F_AUTONEG == OFPPF11_AUTONEG); /* bit 13 */
2410 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE == OFPPF11_PAUSE); /* bit 14 */
2411 BUILD_ASSERT_DECL((int) NETDEV_F_PAUSE_ASYM == OFPPF11_PAUSE_ASYM);/* bit 15 */
2413 static enum netdev_features
2414 netdev_port_features_from_ofp11(ovs_be32 ofp11)
2416 return ntohl(ofp11) & 0xffff;
2420 netdev_port_features_to_ofp11(enum netdev_features features)
2422 return htonl(features & 0xffff);
2426 ofputil_decode_ofp10_phy_port(struct ofputil_phy_port *pp,
2427 const struct ofp10_phy_port *opp)
2429 memset(pp, 0, sizeof *pp);
2431 pp->port_no = ntohs(opp->port_no);
2432 memcpy(pp->hw_addr, opp->hw_addr, OFP_ETH_ALEN);
2433 ovs_strlcpy(pp->name, opp->name, OFP_MAX_PORT_NAME_LEN);
2435 pp->config = ntohl(opp->config) & OFPPC10_ALL;
2436 pp->state = ntohl(opp->state) & OFPPS10_ALL;
2438 pp->curr = netdev_port_features_from_ofp10(opp->curr);
2439 pp->advertised = netdev_port_features_from_ofp10(opp->advertised);
2440 pp->supported = netdev_port_features_from_ofp10(opp->supported);
2441 pp->peer = netdev_port_features_from_ofp10(opp->peer);
2443 pp->curr_speed = netdev_features_to_bps(pp->curr) / 1000;
2444 pp->max_speed = netdev_features_to_bps(pp->supported) / 1000;
2450 ofputil_decode_ofp11_port(struct ofputil_phy_port *pp,
2451 const struct ofp11_port *op)
2455 memset(pp, 0, sizeof *pp);
2457 error = ofputil_port_from_ofp11(op->port_no, &pp->port_no);
2461 memcpy(pp->hw_addr, op->hw_addr, OFP_ETH_ALEN);
2462 ovs_strlcpy(pp->name, op->name, OFP_MAX_PORT_NAME_LEN);
2464 pp->config = ntohl(op->config) & OFPPC11_ALL;
2465 pp->state = ntohl(op->state) & OFPPC11_ALL;
2467 pp->curr = netdev_port_features_from_ofp11(op->curr);
2468 pp->advertised = netdev_port_features_from_ofp11(op->advertised);
2469 pp->supported = netdev_port_features_from_ofp11(op->supported);
2470 pp->peer = netdev_port_features_from_ofp11(op->peer);
2472 pp->curr_speed = ntohl(op->curr_speed);
2473 pp->max_speed = ntohl(op->max_speed);
2479 ofputil_get_phy_port_size(enum ofp_version ofp_version)
2481 switch (ofp_version) {
2483 return sizeof(struct ofp10_phy_port);
2486 return sizeof(struct ofp11_port);
2493 ofputil_encode_ofp10_phy_port(const struct ofputil_phy_port *pp,
2494 struct ofp10_phy_port *opp)
2496 memset(opp, 0, sizeof *opp);
2498 opp->port_no = htons(pp->port_no);
2499 memcpy(opp->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2500 ovs_strlcpy(opp->name, pp->name, OFP_MAX_PORT_NAME_LEN);
2502 opp->config = htonl(pp->config & OFPPC10_ALL);
2503 opp->state = htonl(pp->state & OFPPS10_ALL);
2505 opp->curr = netdev_port_features_to_ofp10(pp->curr);
2506 opp->advertised = netdev_port_features_to_ofp10(pp->advertised);
2507 opp->supported = netdev_port_features_to_ofp10(pp->supported);
2508 opp->peer = netdev_port_features_to_ofp10(pp->peer);
2512 ofputil_encode_ofp11_port(const struct ofputil_phy_port *pp,
2513 struct ofp11_port *op)
2515 memset(op, 0, sizeof *op);
2517 op->port_no = ofputil_port_to_ofp11(pp->port_no);
2518 memcpy(op->hw_addr, pp->hw_addr, ETH_ADDR_LEN);
2519 ovs_strlcpy(op->name, pp->name, OFP_MAX_PORT_NAME_LEN);
2521 op->config = htonl(pp->config & OFPPC11_ALL);
2522 op->state = htonl(pp->state & OFPPS11_ALL);
2524 op->curr = netdev_port_features_to_ofp11(pp->curr);
2525 op->advertised = netdev_port_features_to_ofp11(pp->advertised);
2526 op->supported = netdev_port_features_to_ofp11(pp->supported);
2527 op->peer = netdev_port_features_to_ofp11(pp->peer);
2529 op->curr_speed = htonl(pp->curr_speed);
2530 op->max_speed = htonl(pp->max_speed);
2534 ofputil_put_phy_port(enum ofp_version ofp_version,
2535 const struct ofputil_phy_port *pp, struct ofpbuf *b)
2537 switch (ofp_version) {
2538 case OFP10_VERSION: {
2539 struct ofp10_phy_port *opp;
2540 if (b->size + sizeof *opp <= UINT16_MAX) {
2541 opp = ofpbuf_put_uninit(b, sizeof *opp);
2542 ofputil_encode_ofp10_phy_port(pp, opp);
2548 case OFP12_VERSION: {
2549 struct ofp11_port *op;
2550 if (b->size + sizeof *op <= UINT16_MAX) {
2551 op = ofpbuf_put_uninit(b, sizeof *op);
2552 ofputil_encode_ofp11_port(pp, op);
2563 ofputil_append_port_desc_stats_reply(enum ofp_version ofp_version,
2564 const struct ofputil_phy_port *pp,
2565 struct list *replies)
2567 switch (ofp_version) {
2568 case OFP10_VERSION: {
2569 struct ofp10_phy_port *opp;
2571 opp = ofpmp_append(replies, sizeof *opp);
2572 ofputil_encode_ofp10_phy_port(pp, opp);
2577 case OFP12_VERSION: {
2578 struct ofp11_port *op;
2580 op = ofpmp_append(replies, sizeof *op);
2581 ofputil_encode_ofp11_port(pp, op);
2590 /* ofputil_switch_features */
2592 #define OFPC_COMMON (OFPC_FLOW_STATS | OFPC_TABLE_STATS | OFPC_PORT_STATS | \
2593 OFPC_IP_REASM | OFPC_QUEUE_STATS)
2594 BUILD_ASSERT_DECL((int) OFPUTIL_C_FLOW_STATS == OFPC_FLOW_STATS);
2595 BUILD_ASSERT_DECL((int) OFPUTIL_C_TABLE_STATS == OFPC_TABLE_STATS);
2596 BUILD_ASSERT_DECL((int) OFPUTIL_C_PORT_STATS == OFPC_PORT_STATS);
2597 BUILD_ASSERT_DECL((int) OFPUTIL_C_IP_REASM == OFPC_IP_REASM);
2598 BUILD_ASSERT_DECL((int) OFPUTIL_C_QUEUE_STATS == OFPC_QUEUE_STATS);
2599 BUILD_ASSERT_DECL((int) OFPUTIL_C_ARP_MATCH_IP == OFPC_ARP_MATCH_IP);
2601 struct ofputil_action_bit_translation {
2602 enum ofputil_action_bitmap ofputil_bit;
2606 static const struct ofputil_action_bit_translation of10_action_bits[] = {
2607 { OFPUTIL_A_OUTPUT, OFPAT10_OUTPUT },
2608 { OFPUTIL_A_SET_VLAN_VID, OFPAT10_SET_VLAN_VID },
2609 { OFPUTIL_A_SET_VLAN_PCP, OFPAT10_SET_VLAN_PCP },
2610 { OFPUTIL_A_STRIP_VLAN, OFPAT10_STRIP_VLAN },
2611 { OFPUTIL_A_SET_DL_SRC, OFPAT10_SET_DL_SRC },
2612 { OFPUTIL_A_SET_DL_DST, OFPAT10_SET_DL_DST },
2613 { OFPUTIL_A_SET_NW_SRC, OFPAT10_SET_NW_SRC },
2614 { OFPUTIL_A_SET_NW_DST, OFPAT10_SET_NW_DST },
2615 { OFPUTIL_A_SET_NW_TOS, OFPAT10_SET_NW_TOS },
2616 { OFPUTIL_A_SET_TP_SRC, OFPAT10_SET_TP_SRC },
2617 { OFPUTIL_A_SET_TP_DST, OFPAT10_SET_TP_DST },
2618 { OFPUTIL_A_ENQUEUE, OFPAT10_ENQUEUE },
2622 static enum ofputil_action_bitmap
2623 decode_action_bits(ovs_be32 of_actions,
2624 const struct ofputil_action_bit_translation *x)
2626 enum ofputil_action_bitmap ofputil_actions;
2628 ofputil_actions = 0;
2629 for (; x->ofputil_bit; x++) {
2630 if (of_actions & htonl(1u << x->of_bit)) {
2631 ofputil_actions |= x->ofputil_bit;
2634 return ofputil_actions;
2638 ofputil_capabilities_mask(enum ofp_version ofp_version)
2640 /* Handle capabilities whose bit is unique for all Open Flow versions */
2641 switch (ofp_version) {
2644 return OFPC_COMMON | OFPC_ARP_MATCH_IP;
2646 return OFPC_COMMON | OFPC12_PORT_BLOCKED;
2648 /* Caller needs to check osf->header.version itself */
2653 /* Decodes an OpenFlow 1.0 or 1.1 "switch_features" structure 'osf' into an
2654 * abstract representation in '*features'. Initializes '*b' to iterate over
2655 * the OpenFlow port structures following 'osf' with later calls to
2656 * ofputil_pull_phy_port(). Returns 0 if successful, otherwise an
2657 * OFPERR_* value. */
2659 ofputil_decode_switch_features(const struct ofp_header *oh,
2660 struct ofputil_switch_features *features,
2663 const struct ofp_switch_features *osf;
2666 ofpbuf_use_const(b, oh, ntohs(oh->length));
2667 raw = ofpraw_pull_assert(b);
2669 osf = ofpbuf_pull(b, sizeof *osf);
2670 features->datapath_id = ntohll(osf->datapath_id);
2671 features->n_buffers = ntohl(osf->n_buffers);
2672 features->n_tables = osf->n_tables;
2674 features->capabilities = ntohl(osf->capabilities) &
2675 ofputil_capabilities_mask(oh->version);
2677 if (b->size % ofputil_get_phy_port_size(oh->version)) {
2678 return OFPERR_OFPBRC_BAD_LEN;
2681 if (raw == OFPRAW_OFPT10_FEATURES_REPLY) {
2682 if (osf->capabilities & htonl(OFPC10_STP)) {
2683 features->capabilities |= OFPUTIL_C_STP;
2685 features->actions = decode_action_bits(osf->actions, of10_action_bits);
2686 } else if (raw == OFPRAW_OFPT11_FEATURES_REPLY) {
2687 if (osf->capabilities & htonl(OFPC11_GROUP_STATS)) {
2688 features->capabilities |= OFPUTIL_C_GROUP_STATS;
2690 features->actions = 0;
2692 return OFPERR_OFPBRC_BAD_VERSION;
2698 /* Returns true if the maximum number of ports are in 'oh'. */
2700 max_ports_in_features(const struct ofp_header *oh)
2702 size_t pp_size = ofputil_get_phy_port_size(oh->version);
2703 return ntohs(oh->length) + pp_size > UINT16_MAX;
2706 /* Given a buffer 'b' that contains a Features Reply message, checks if
2707 * it contains the maximum number of ports that will fit. If so, it
2708 * returns true and removes the ports from the message. The caller
2709 * should then send an OFPST_PORT_DESC stats request to get the ports,
2710 * since the switch may have more ports than could be represented in the
2711 * Features Reply. Otherwise, returns false.
2714 ofputil_switch_features_ports_trunc(struct ofpbuf *b)
2716 struct ofp_header *oh = b->data;
2718 if (max_ports_in_features(oh)) {
2719 /* Remove all the ports. */
2720 b->size = (sizeof(struct ofp_header)
2721 + sizeof(struct ofp_switch_features));
2722 ofpmsg_update_length(b);
2731 encode_action_bits(enum ofputil_action_bitmap ofputil_actions,
2732 const struct ofputil_action_bit_translation *x)
2734 uint32_t of_actions;
2737 for (; x->ofputil_bit; x++) {
2738 if (ofputil_actions & x->ofputil_bit) {
2739 of_actions |= 1 << x->of_bit;
2742 return htonl(of_actions);
2745 /* Returns a buffer owned by the caller that encodes 'features' in the format
2746 * required by 'protocol' with the given 'xid'. The caller should append port
2747 * information to the buffer with subsequent calls to
2748 * ofputil_put_switch_features_port(). */
2750 ofputil_encode_switch_features(const struct ofputil_switch_features *features,
2751 enum ofputil_protocol protocol, ovs_be32 xid)
2753 struct ofp_switch_features *osf;
2755 enum ofp_version version;
2758 version = ofputil_protocol_to_ofp_version(protocol);
2761 raw = OFPRAW_OFPT10_FEATURES_REPLY;
2765 raw = OFPRAW_OFPT11_FEATURES_REPLY;
2770 b = ofpraw_alloc_xid(raw, version, xid, 0);
2771 osf = ofpbuf_put_zeros(b, sizeof *osf);
2772 osf->datapath_id = htonll(features->datapath_id);
2773 osf->n_buffers = htonl(features->n_buffers);
2774 osf->n_tables = features->n_tables;
2776 osf->capabilities = htonl(features->capabilities & OFPC_COMMON);
2777 osf->capabilities = htonl(features->capabilities &
2778 ofputil_capabilities_mask(version));
2781 if (features->capabilities & OFPUTIL_C_STP) {
2782 osf->capabilities |= htonl(OFPC10_STP);
2784 osf->actions = encode_action_bits(features->actions, of10_action_bits);
2788 if (features->capabilities & OFPUTIL_C_GROUP_STATS) {
2789 osf->capabilities |= htonl(OFPC11_GROUP_STATS);
2799 /* Encodes 'pp' into the format required by the switch_features message already
2800 * in 'b', which should have been returned by ofputil_encode_switch_features(),
2801 * and appends the encoded version to 'b'. */
2803 ofputil_put_switch_features_port(const struct ofputil_phy_port *pp,
2806 const struct ofp_header *oh = b->data;
2808 ofputil_put_phy_port(oh->version, pp, b);
2811 /* ofputil_port_status */
2813 /* Decodes the OpenFlow "port status" message in '*ops' into an abstract form
2814 * in '*ps'. Returns 0 if successful, otherwise an OFPERR_* value. */
2816 ofputil_decode_port_status(const struct ofp_header *oh,
2817 struct ofputil_port_status *ps)
2819 const struct ofp_port_status *ops;
2823 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2824 ofpraw_pull_assert(&b);
2825 ops = ofpbuf_pull(&b, sizeof *ops);
2827 if (ops->reason != OFPPR_ADD &&
2828 ops->reason != OFPPR_DELETE &&
2829 ops->reason != OFPPR_MODIFY) {
2830 return OFPERR_NXBRC_BAD_REASON;
2832 ps->reason = ops->reason;
2834 retval = ofputil_pull_phy_port(oh->version, &b, &ps->desc);
2835 assert(retval != EOF);
2839 /* Converts the abstract form of a "port status" message in '*ps' into an
2840 * OpenFlow message suitable for 'protocol', and returns that encoded form in
2841 * a buffer owned by the caller. */
2843 ofputil_encode_port_status(const struct ofputil_port_status *ps,
2844 enum ofputil_protocol protocol)
2846 struct ofp_port_status *ops;
2848 enum ofp_version version;
2851 version = ofputil_protocol_to_ofp_version(protocol);
2854 raw = OFPRAW_OFPT10_PORT_STATUS;
2859 raw = OFPRAW_OFPT11_PORT_STATUS;
2866 b = ofpraw_alloc_xid(raw, version, htonl(0), 0);
2867 ops = ofpbuf_put_zeros(b, sizeof *ops);
2868 ops->reason = ps->reason;
2869 ofputil_put_phy_port(version, &ps->desc, b);
2870 ofpmsg_update_length(b);
2874 /* ofputil_port_mod */
2876 /* Decodes the OpenFlow "port mod" message in '*oh' into an abstract form in
2877 * '*pm'. Returns 0 if successful, otherwise an OFPERR_* value. */
2879 ofputil_decode_port_mod(const struct ofp_header *oh,
2880 struct ofputil_port_mod *pm)
2885 ofpbuf_use_const(&b, oh, ntohs(oh->length));
2886 raw = ofpraw_pull_assert(&b);
2888 if (raw == OFPRAW_OFPT10_PORT_MOD) {
2889 const struct ofp10_port_mod *opm = b.data;
2891 pm->port_no = ntohs(opm->port_no);
2892 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
2893 pm->config = ntohl(opm->config) & OFPPC10_ALL;
2894 pm->mask = ntohl(opm->mask) & OFPPC10_ALL;
2895 pm->advertise = netdev_port_features_from_ofp10(opm->advertise);
2896 } else if (raw == OFPRAW_OFPT11_PORT_MOD) {
2897 const struct ofp11_port_mod *opm = b.data;
2900 error = ofputil_port_from_ofp11(opm->port_no, &pm->port_no);
2905 memcpy(pm->hw_addr, opm->hw_addr, ETH_ADDR_LEN);
2906 pm->config = ntohl(opm->config) & OFPPC11_ALL;
2907 pm->mask = ntohl(opm->mask) & OFPPC11_ALL;
2908 pm->advertise = netdev_port_features_from_ofp11(opm->advertise);
2910 return OFPERR_OFPBRC_BAD_TYPE;
2913 pm->config &= pm->mask;
2917 /* Converts the abstract form of a "port mod" message in '*pm' into an OpenFlow
2918 * message suitable for 'protocol', and returns that encoded form in a buffer
2919 * owned by the caller. */
2921 ofputil_encode_port_mod(const struct ofputil_port_mod *pm,
2922 enum ofputil_protocol protocol)
2924 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
2927 switch (ofp_version) {
2928 case OFP10_VERSION: {
2929 struct ofp10_port_mod *opm;
2931 b = ofpraw_alloc(OFPRAW_OFPT10_PORT_MOD, ofp_version, 0);
2932 opm = ofpbuf_put_zeros(b, sizeof *opm);
2933 opm->port_no = htons(pm->port_no);
2934 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
2935 opm->config = htonl(pm->config & OFPPC10_ALL);
2936 opm->mask = htonl(pm->mask & OFPPC10_ALL);
2937 opm->advertise = netdev_port_features_to_ofp10(pm->advertise);
2942 case OFP12_VERSION: {
2943 struct ofp11_port_mod *opm;
2945 b = ofpraw_alloc(OFPRAW_OFPT11_PORT_MOD, ofp_version, 0);
2946 opm = ofpbuf_put_zeros(b, sizeof *opm);
2947 opm->port_no = ofputil_port_to_ofp11(pm->port_no);
2948 memcpy(opm->hw_addr, pm->hw_addr, ETH_ADDR_LEN);
2949 opm->config = htonl(pm->config & OFPPC11_ALL);
2950 opm->mask = htonl(pm->mask & OFPPC11_ALL);
2951 opm->advertise = netdev_port_features_to_ofp11(pm->advertise);
2965 ofputil_put_ofp10_table_stats(const struct ofp12_table_stats *in,
2969 enum ofp_flow_wildcards wc10;
2970 enum oxm12_ofb_match_fields mf12;
2973 static const struct wc_map wc_map[] = {
2974 { OFPFW10_IN_PORT, OFPXMT12_OFB_IN_PORT },
2975 { OFPFW10_DL_VLAN, OFPXMT12_OFB_VLAN_VID },
2976 { OFPFW10_DL_SRC, OFPXMT12_OFB_ETH_SRC },
2977 { OFPFW10_DL_DST, OFPXMT12_OFB_ETH_DST},
2978 { OFPFW10_DL_TYPE, OFPXMT12_OFB_ETH_TYPE },
2979 { OFPFW10_NW_PROTO, OFPXMT12_OFB_IP_PROTO },
2980 { OFPFW10_TP_SRC, OFPXMT12_OFB_TCP_SRC },
2981 { OFPFW10_TP_DST, OFPXMT12_OFB_TCP_DST },
2982 { OFPFW10_NW_SRC_MASK, OFPXMT12_OFB_IPV4_SRC },
2983 { OFPFW10_NW_DST_MASK, OFPXMT12_OFB_IPV4_DST },
2984 { OFPFW10_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP },
2985 { OFPFW10_NW_TOS, OFPXMT12_OFB_IP_DSCP },
2988 struct ofp10_table_stats *out;
2989 const struct wc_map *p;
2991 out = ofpbuf_put_uninit(buf, sizeof *out);
2992 out->table_id = in->table_id;
2993 strcpy(out->name, in->name);
2995 for (p = wc_map; p < &wc_map[ARRAY_SIZE(wc_map)]; p++) {
2996 if (in->wildcards & htonll(1ULL << p->mf12)) {
2997 out->wildcards |= htonl(p->wc10);
3000 out->max_entries = in->max_entries;
3001 out->active_count = in->active_count;
3002 put_32aligned_be64(&out->lookup_count, in->lookup_count);
3003 put_32aligned_be64(&out->matched_count, in->matched_count);
3007 oxm12_to_ofp11_flow_match_fields(ovs_be64 oxm12)
3010 enum ofp11_flow_match_fields fmf11;
3011 enum oxm12_ofb_match_fields mf12;
3014 static const struct map map[] = {
3015 { OFPFMF11_IN_PORT, OFPXMT12_OFB_IN_PORT },
3016 { OFPFMF11_DL_VLAN, OFPXMT12_OFB_VLAN_VID },
3017 { OFPFMF11_DL_VLAN_PCP, OFPXMT12_OFB_VLAN_PCP },
3018 { OFPFMF11_DL_TYPE, OFPXMT12_OFB_ETH_TYPE },
3019 { OFPFMF11_NW_TOS, OFPXMT12_OFB_IP_DSCP },
3020 { OFPFMF11_NW_PROTO, OFPXMT12_OFB_IP_PROTO },
3021 { OFPFMF11_TP_SRC, OFPXMT12_OFB_TCP_SRC },
3022 { OFPFMF11_TP_DST, OFPXMT12_OFB_TCP_DST },
3023 { OFPFMF11_MPLS_LABEL, OFPXMT12_OFB_MPLS_LABEL },
3024 { OFPFMF11_MPLS_TC, OFPXMT12_OFB_MPLS_TC },
3025 /* I don't know what OFPFMF11_TYPE means. */
3026 { OFPFMF11_DL_SRC, OFPXMT12_OFB_ETH_SRC },
3027 { OFPFMF11_DL_DST, OFPXMT12_OFB_ETH_DST },
3028 { OFPFMF11_NW_SRC, OFPXMT12_OFB_IPV4_SRC },
3029 { OFPFMF11_NW_DST, OFPXMT12_OFB_IPV4_DST },
3030 { OFPFMF11_METADATA, OFPXMT12_OFB_METADATA },
3033 const struct map *p;
3037 for (p = map; p < &map[ARRAY_SIZE(map)]; p++) {
3038 if (oxm12 & htonll(1ULL << p->mf12)) {
3042 return htonl(fmf11);
3046 ofputil_put_ofp11_table_stats(const struct ofp12_table_stats *in,
3049 struct ofp11_table_stats *out;
3051 out = ofpbuf_put_uninit(buf, sizeof *out);
3052 out->table_id = in->table_id;
3053 strcpy(out->name, in->name);
3054 out->wildcards = oxm12_to_ofp11_flow_match_fields(in->wildcards);
3055 out->match = oxm12_to_ofp11_flow_match_fields(in->match);
3056 out->instructions = in->instructions;
3057 out->write_actions = in->write_actions;
3058 out->apply_actions = in->apply_actions;
3059 out->config = in->config;
3060 out->max_entries = in->max_entries;
3061 out->active_count = in->active_count;
3062 out->lookup_count = in->lookup_count;
3063 out->matched_count = in->matched_count;
3067 ofputil_encode_table_stats_reply(const struct ofp12_table_stats stats[], int n,
3068 const struct ofp_header *request)
3070 struct ofpbuf *reply;
3073 reply = ofpraw_alloc_stats_reply(request, n * sizeof *stats);
3075 switch ((enum ofp_version) request->version) {
3077 for (i = 0; i < n; i++) {
3078 ofputil_put_ofp10_table_stats(&stats[i], reply);
3083 for (i = 0; i < n; i++) {
3084 ofputil_put_ofp11_table_stats(&stats[i], reply);
3089 ofpbuf_put(reply, stats, n * sizeof *stats);
3099 /* ofputil_flow_monitor_request */
3101 /* Converts an NXST_FLOW_MONITOR request in 'msg' into an abstract
3102 * ofputil_flow_monitor_request in 'rq'.
3104 * Multiple NXST_FLOW_MONITOR requests can be packed into a single OpenFlow
3105 * message. Calling this function multiple times for a single 'msg' iterates
3106 * through the requests. The caller must initially leave 'msg''s layer
3107 * pointers null and not modify them between calls.
3109 * Returns 0 if successful, EOF if no requests were left in this 'msg',
3110 * otherwise an OFPERR_* value. */
3112 ofputil_decode_flow_monitor_request(struct ofputil_flow_monitor_request *rq,
3115 struct nx_flow_monitor_request *nfmr;
3119 msg->l2 = msg->data;
3120 ofpraw_pull_assert(msg);
3127 nfmr = ofpbuf_try_pull(msg, sizeof *nfmr);
3129 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR request has %zu "
3130 "leftover bytes at end", msg->size);
3131 return OFPERR_OFPBRC_BAD_LEN;
3134 flags = ntohs(nfmr->flags);
3135 if (!(flags & (NXFMF_ADD | NXFMF_DELETE | NXFMF_MODIFY))
3136 || flags & ~(NXFMF_INITIAL | NXFMF_ADD | NXFMF_DELETE
3137 | NXFMF_MODIFY | NXFMF_ACTIONS | NXFMF_OWN)) {
3138 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR has bad flags %#"PRIx16,
3140 return OFPERR_NXBRC_FM_BAD_FLAGS;
3143 if (!is_all_zeros(nfmr->zeros, sizeof nfmr->zeros)) {
3144 return OFPERR_NXBRC_MUST_BE_ZERO;
3147 rq->id = ntohl(nfmr->id);
3149 rq->out_port = ntohs(nfmr->out_port);
3150 rq->table_id = nfmr->table_id;
3152 return nx_pull_match(msg, ntohs(nfmr->match_len), &rq->match, NULL, NULL);
3156 ofputil_append_flow_monitor_request(
3157 const struct ofputil_flow_monitor_request *rq, struct ofpbuf *msg)
3159 struct nx_flow_monitor_request *nfmr;
3164 ofpraw_put(OFPRAW_NXST_FLOW_MONITOR_REQUEST, OFP10_VERSION, msg);
3167 start_ofs = msg->size;
3168 ofpbuf_put_zeros(msg, sizeof *nfmr);
3169 match_len = nx_put_match(msg, &rq->match, htonll(0), htonll(0));
3171 nfmr = ofpbuf_at_assert(msg, start_ofs, sizeof *nfmr);
3172 nfmr->id = htonl(rq->id);
3173 nfmr->flags = htons(rq->flags);
3174 nfmr->out_port = htons(rq->out_port);
3175 nfmr->match_len = htons(match_len);
3176 nfmr->table_id = rq->table_id;
3179 /* Converts an NXST_FLOW_MONITOR reply (also known as a flow update) in 'msg'
3180 * into an abstract ofputil_flow_update in 'update'. The caller must have
3181 * initialized update->match to point to space allocated for a match.
3183 * Uses 'ofpacts' to store the abstract OFPACT_* version of the update's
3184 * actions (except for NXFME_ABBREV, which never includes actions). The caller
3185 * must initialize 'ofpacts' and retains ownership of it. 'update->ofpacts'
3186 * will point into the 'ofpacts' buffer.
3188 * Multiple flow updates can be packed into a single OpenFlow message. Calling
3189 * this function multiple times for a single 'msg' iterates through the
3190 * updates. The caller must initially leave 'msg''s layer pointers null and
3191 * not modify them between calls.
3193 * Returns 0 if successful, EOF if no updates were left in this 'msg',
3194 * otherwise an OFPERR_* value. */
3196 ofputil_decode_flow_update(struct ofputil_flow_update *update,
3197 struct ofpbuf *msg, struct ofpbuf *ofpacts)
3199 struct nx_flow_update_header *nfuh;
3200 unsigned int length;
3203 msg->l2 = msg->data;
3204 ofpraw_pull_assert(msg);
3211 if (msg->size < sizeof(struct nx_flow_update_header)) {
3216 update->event = ntohs(nfuh->event);
3217 length = ntohs(nfuh->length);
3218 if (length > msg->size || length % 8) {
3222 if (update->event == NXFME_ABBREV) {
3223 struct nx_flow_update_abbrev *nfua;
3225 if (length != sizeof *nfua) {
3229 nfua = ofpbuf_pull(msg, sizeof *nfua);
3230 update->xid = nfua->xid;
3232 } else if (update->event == NXFME_ADDED
3233 || update->event == NXFME_DELETED
3234 || update->event == NXFME_MODIFIED) {
3235 struct nx_flow_update_full *nfuf;
3236 unsigned int actions_len;
3237 unsigned int match_len;
3240 if (length < sizeof *nfuf) {
3244 nfuf = ofpbuf_pull(msg, sizeof *nfuf);
3245 match_len = ntohs(nfuf->match_len);
3246 if (sizeof *nfuf + match_len > length) {
3250 update->reason = ntohs(nfuf->reason);
3251 update->idle_timeout = ntohs(nfuf->idle_timeout);
3252 update->hard_timeout = ntohs(nfuf->hard_timeout);
3253 update->table_id = nfuf->table_id;
3254 update->cookie = nfuf->cookie;
3255 update->priority = ntohs(nfuf->priority);
3257 error = nx_pull_match(msg, match_len, update->match, NULL, NULL);
3262 actions_len = length - sizeof *nfuf - ROUND_UP(match_len, 8);
3263 error = ofpacts_pull_openflow10(msg, actions_len, ofpacts);
3268 update->ofpacts = ofpacts->data;
3269 update->ofpacts_len = ofpacts->size;
3272 VLOG_WARN_RL(&bad_ofmsg_rl,
3273 "NXST_FLOW_MONITOR reply has bad event %"PRIu16,
3274 ntohs(nfuh->event));
3275 return OFPERR_OFPET_BAD_REQUEST;
3279 VLOG_WARN_RL(&bad_ofmsg_rl, "NXST_FLOW_MONITOR reply has %zu "
3280 "leftover bytes at end", msg->size);
3281 return OFPERR_OFPBRC_BAD_LEN;
3285 ofputil_decode_flow_monitor_cancel(const struct ofp_header *oh)
3287 const struct nx_flow_monitor_cancel *cancel = ofpmsg_body(oh);
3289 return ntohl(cancel->id);
3293 ofputil_encode_flow_monitor_cancel(uint32_t id)
3295 struct nx_flow_monitor_cancel *nfmc;
3298 msg = ofpraw_alloc(OFPRAW_NXT_FLOW_MONITOR_CANCEL, OFP10_VERSION, 0);
3299 nfmc = ofpbuf_put_uninit(msg, sizeof *nfmc);
3300 nfmc->id = htonl(id);
3305 ofputil_start_flow_update(struct list *replies)
3309 msg = ofpraw_alloc_xid(OFPRAW_NXST_FLOW_MONITOR_REPLY, OFP10_VERSION,
3313 list_push_back(replies, &msg->list_node);
3317 ofputil_append_flow_update(const struct ofputil_flow_update *update,
3318 struct list *replies)
3320 struct nx_flow_update_header *nfuh;
3324 msg = ofpbuf_from_list(list_back(replies));
3325 start_ofs = msg->size;
3327 if (update->event == NXFME_ABBREV) {
3328 struct nx_flow_update_abbrev *nfua;
3330 nfua = ofpbuf_put_zeros(msg, sizeof *nfua);
3331 nfua->xid = update->xid;
3333 struct nx_flow_update_full *nfuf;
3336 ofpbuf_put_zeros(msg, sizeof *nfuf);
3337 match_len = nx_put_match(msg, update->match, htonll(0), htonll(0));
3338 ofpacts_put_openflow10(update->ofpacts, update->ofpacts_len, msg);
3340 nfuf = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuf);
3341 nfuf->reason = htons(update->reason);
3342 nfuf->priority = htons(update->priority);
3343 nfuf->idle_timeout = htons(update->idle_timeout);
3344 nfuf->hard_timeout = htons(update->hard_timeout);
3345 nfuf->match_len = htons(match_len);
3346 nfuf->table_id = update->table_id;
3347 nfuf->cookie = update->cookie;
3350 nfuh = ofpbuf_at_assert(msg, start_ofs, sizeof *nfuh);
3351 nfuh->length = htons(msg->size - start_ofs);
3352 nfuh->event = htons(update->event);
3354 ofpmp_postappend(replies, start_ofs);
3358 ofputil_encode_packet_out(const struct ofputil_packet_out *po,
3359 enum ofputil_protocol protocol)
3361 enum ofp_version ofp_version = ofputil_protocol_to_ofp_version(protocol);
3365 size = po->ofpacts_len;
3366 if (po->buffer_id == UINT32_MAX) {
3367 size += po->packet_len;
3370 switch (ofp_version) {
3371 case OFP10_VERSION: {
3372 struct ofp_packet_out *opo;
3375 msg = ofpraw_alloc(OFPRAW_OFPT10_PACKET_OUT, OFP10_VERSION, size);
3376 ofpbuf_put_zeros(msg, sizeof *opo);
3377 actions_ofs = msg->size;
3378 ofpacts_put_openflow10(po->ofpacts, po->ofpacts_len, msg);
3381 opo->buffer_id = htonl(po->buffer_id);
3382 opo->in_port = htons(po->in_port);
3383 opo->actions_len = htons(msg->size - actions_ofs);
3388 case OFP12_VERSION: {
3389 struct ofp11_packet_out *opo;
3392 msg = ofpraw_alloc(OFPRAW_OFPT11_PACKET_OUT, ofp_version, size);
3393 ofpbuf_put_zeros(msg, sizeof *opo);
3394 len = ofpacts_put_openflow11_actions(po->ofpacts, po->ofpacts_len, msg);
3397 opo->buffer_id = htonl(po->buffer_id);
3398 opo->in_port = ofputil_port_to_ofp11(po->in_port);
3399 opo->actions_len = htons(len);
3407 if (po->buffer_id == UINT32_MAX) {
3408 ofpbuf_put(msg, po->packet, po->packet_len);
3411 ofpmsg_update_length(msg);
3416 /* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
3418 make_echo_request(enum ofp_version ofp_version)
3420 return ofpraw_alloc_xid(OFPRAW_OFPT_ECHO_REQUEST, ofp_version,
3424 /* Creates and returns an OFPT_ECHO_REPLY message matching the
3425 * OFPT_ECHO_REQUEST message in 'rq'. */
3427 make_echo_reply(const struct ofp_header *rq)
3429 struct ofpbuf rq_buf;
3430 struct ofpbuf *reply;
3432 ofpbuf_use_const(&rq_buf, rq, ntohs(rq->length));
3433 ofpraw_pull_assert(&rq_buf);
3435 reply = ofpraw_alloc_reply(OFPRAW_OFPT_ECHO_REPLY, rq, rq_buf.size);
3436 ofpbuf_put(reply, rq_buf.data, rq_buf.size);
3441 ofputil_encode_barrier_request(enum ofp_version ofp_version)
3445 switch (ofp_version) {
3448 type = OFPRAW_OFPT11_BARRIER_REQUEST;
3452 type = OFPRAW_OFPT10_BARRIER_REQUEST;
3459 return ofpraw_alloc(type, ofp_version, 0);
3463 ofputil_frag_handling_to_string(enum ofp_config_flags flags)
3465 switch (flags & OFPC_FRAG_MASK) {
3466 case OFPC_FRAG_NORMAL: return "normal";
3467 case OFPC_FRAG_DROP: return "drop";
3468 case OFPC_FRAG_REASM: return "reassemble";
3469 case OFPC_FRAG_NX_MATCH: return "nx-match";
3476 ofputil_frag_handling_from_string(const char *s, enum ofp_config_flags *flags)
3478 if (!strcasecmp(s, "normal")) {
3479 *flags = OFPC_FRAG_NORMAL;
3480 } else if (!strcasecmp(s, "drop")) {
3481 *flags = OFPC_FRAG_DROP;
3482 } else if (!strcasecmp(s, "reassemble")) {
3483 *flags = OFPC_FRAG_REASM;
3484 } else if (!strcasecmp(s, "nx-match")) {
3485 *flags = OFPC_FRAG_NX_MATCH;
3492 /* Converts the OpenFlow 1.1+ port number 'ofp11_port' into an OpenFlow 1.0
3493 * port number and stores the latter in '*ofp10_port', for the purpose of
3494 * decoding OpenFlow 1.1+ protocol messages. Returns 0 if successful,
3495 * otherwise an OFPERR_* number.
3497 * See the definition of OFP11_MAX for an explanation of the mapping. */
3499 ofputil_port_from_ofp11(ovs_be32 ofp11_port, uint16_t *ofp10_port)
3501 uint32_t ofp11_port_h = ntohl(ofp11_port);
3503 if (ofp11_port_h < OFPP_MAX) {
3504 *ofp10_port = ofp11_port_h;
3506 } else if (ofp11_port_h >= OFPP11_MAX) {
3507 *ofp10_port = ofp11_port_h - OFPP11_OFFSET;
3510 VLOG_WARN_RL(&bad_ofmsg_rl, "port %"PRIu32" is outside the supported "
3511 "range 0 through %d or 0x%"PRIx32" through 0x%"PRIx32,
3512 ofp11_port_h, OFPP_MAX - 1,
3513 (uint32_t) OFPP11_MAX, UINT32_MAX);
3514 return OFPERR_OFPBAC_BAD_OUT_PORT;
3518 /* Returns the OpenFlow 1.1+ port number equivalent to the OpenFlow 1.0 port
3519 * number 'ofp10_port', for encoding OpenFlow 1.1+ protocol messages.
3521 * See the definition of OFP11_MAX for an explanation of the mapping. */
3523 ofputil_port_to_ofp11(uint16_t ofp10_port)
3525 return htonl(ofp10_port < OFPP_MAX
3527 : ofp10_port + OFPP11_OFFSET);
3530 /* Checks that 'port' is a valid output port for the OFPAT10_OUTPUT action, given
3531 * that the switch will never have more than 'max_ports' ports. Returns 0 if
3532 * 'port' is valid, otherwise an OpenFlow return code. */
3534 ofputil_check_output_port(uint16_t port, int max_ports)
3542 case OFPP_CONTROLLER:
3548 if (port < max_ports) {
3551 return OFPERR_OFPBAC_BAD_OUT_PORT;
3555 #define OFPUTIL_NAMED_PORTS \
3556 OFPUTIL_NAMED_PORT(IN_PORT) \
3557 OFPUTIL_NAMED_PORT(TABLE) \
3558 OFPUTIL_NAMED_PORT(NORMAL) \
3559 OFPUTIL_NAMED_PORT(FLOOD) \
3560 OFPUTIL_NAMED_PORT(ALL) \
3561 OFPUTIL_NAMED_PORT(CONTROLLER) \
3562 OFPUTIL_NAMED_PORT(LOCAL) \
3563 OFPUTIL_NAMED_PORT(NONE)
3565 /* Stores the port number represented by 's' into '*portp'. 's' may be an
3566 * integer or, for reserved ports, the standard OpenFlow name for the port
3569 * Returns true if successful, false if 's' is not a valid OpenFlow port number
3570 * or name. The caller should issue an error message in this case, because
3571 * this function usually does not. (This gives the caller an opportunity to
3572 * look up the port name another way, e.g. by contacting the switch and listing
3573 * the names of all its ports).
3575 * This function accepts OpenFlow 1.0 port numbers. It also accepts a subset
3576 * of OpenFlow 1.1+ port numbers, mapping those port numbers into the 16-bit
3577 * range as described in include/openflow/openflow-1.1.h. */
3579 ofputil_port_from_string(const char *s, uint16_t *portp)
3581 unsigned int port32;
3584 if (str_to_uint(s, 10, &port32)) {
3585 if (port32 < OFPP_MAX) {
3588 } else if (port32 < OFPP_FIRST_RESV) {
3589 VLOG_WARN("port %u is a reserved OF1.0 port number that will "
3590 "be translated to %u when talking to an OF1.1 or "
3591 "later controller", port32, port32 + OFPP11_OFFSET);
3594 } else if (port32 <= OFPP_LAST_RESV) {
3598 ofputil_format_port(port32, &s);
3599 VLOG_WARN_ONCE("referring to port %s as %u is deprecated for "
3600 "compatibility with future versions of OpenFlow",
3601 ds_cstr(&s), port32);
3606 } else if (port32 < OFPP11_MAX) {
3607 VLOG_WARN("port %u is outside the supported range 0 through "
3608 "%"PRIx16" or 0x%x through 0x%"PRIx32, port32,
3609 UINT16_MAX, (unsigned int) OFPP11_MAX, UINT32_MAX);
3612 *portp = port32 - OFPP11_OFFSET;
3620 static const struct pair pairs[] = {
3621 #define OFPUTIL_NAMED_PORT(NAME) {#NAME, OFPP_##NAME},
3623 #undef OFPUTIL_NAMED_PORT
3625 const struct pair *p;
3627 for (p = pairs; p < &pairs[ARRAY_SIZE(pairs)]; p++) {
3628 if (!strcasecmp(s, p->name)) {
3637 /* Appends to 's' a string representation of the OpenFlow port number 'port'.
3638 * Most ports' string representation is just the port number, but for special
3639 * ports, e.g. OFPP_LOCAL, it is the name, e.g. "LOCAL". */
3641 ofputil_format_port(uint16_t port, struct ds *s)
3646 #define OFPUTIL_NAMED_PORT(NAME) case OFPP_##NAME: name = #NAME; break;
3648 #undef OFPUTIL_NAMED_PORT
3651 ds_put_format(s, "%"PRIu16, port);
3654 ds_put_cstr(s, name);
3657 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
3658 * 'ofp_version', tries to pull the first element from the array. If
3659 * successful, initializes '*pp' with an abstract representation of the
3660 * port and returns 0. If no ports remain to be decoded, returns EOF.
3661 * On an error, returns a positive OFPERR_* value. */
3663 ofputil_pull_phy_port(enum ofp_version ofp_version, struct ofpbuf *b,
3664 struct ofputil_phy_port *pp)
3666 switch (ofp_version) {
3667 case OFP10_VERSION: {
3668 const struct ofp10_phy_port *opp = ofpbuf_try_pull(b, sizeof *opp);
3669 return opp ? ofputil_decode_ofp10_phy_port(pp, opp) : EOF;
3672 case OFP12_VERSION: {
3673 const struct ofp11_port *op = ofpbuf_try_pull(b, sizeof *op);
3674 return op ? ofputil_decode_ofp11_port(pp, op) : EOF;
3681 /* Given a buffer 'b' that contains an array of OpenFlow ports of type
3682 * 'ofp_version', returns the number of elements. */
3683 size_t ofputil_count_phy_ports(uint8_t ofp_version, struct ofpbuf *b)
3685 return b->size / ofputil_get_phy_port_size(ofp_version);
3688 /* Returns the 'enum ofputil_action_code' corresponding to 'name' (e.g. if
3689 * 'name' is "output" then the return value is OFPUTIL_OFPAT10_OUTPUT), or -1 if
3690 * 'name' is not the name of any action.
3692 * ofp-util.def lists the mapping from names to action. */
3694 ofputil_action_code_from_name(const char *name)
3696 static const char *names[OFPUTIL_N_ACTIONS] = {
3698 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) NAME,
3699 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
3700 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) NAME,
3701 #include "ofp-util.def"
3706 for (p = names; p < &names[ARRAY_SIZE(names)]; p++) {
3707 if (*p && !strcasecmp(name, *p)) {
3714 /* Appends an action of the type specified by 'code' to 'buf' and returns the
3715 * action. Initializes the parts of 'action' that identify it as having type
3716 * <ENUM> and length 'sizeof *action' and zeros the rest. For actions that
3717 * have variable length, the length used and cleared is that of struct
3720 ofputil_put_action(enum ofputil_action_code code, struct ofpbuf *buf)
3723 case OFPUTIL_ACTION_INVALID:
3726 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
3727 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
3728 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
3729 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
3730 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
3731 case OFPUTIL_##ENUM: return ofputil_put_##ENUM(buf);
3732 #include "ofp-util.def"
3737 #define OFPAT10_ACTION(ENUM, STRUCT, NAME) \
3739 ofputil_init_##ENUM(struct STRUCT *s) \
3741 memset(s, 0, sizeof *s); \
3742 s->type = htons(ENUM); \
3743 s->len = htons(sizeof *s); \
3747 ofputil_put_##ENUM(struct ofpbuf *buf) \
3749 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
3750 ofputil_init_##ENUM(s); \
3753 #define OFPAT11_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
3754 OFPAT10_ACTION(ENUM, STRUCT, NAME)
3755 #define NXAST_ACTION(ENUM, STRUCT, EXTENSIBLE, NAME) \
3757 ofputil_init_##ENUM(struct STRUCT *s) \
3759 memset(s, 0, sizeof *s); \
3760 s->type = htons(OFPAT10_VENDOR); \
3761 s->len = htons(sizeof *s); \
3762 s->vendor = htonl(NX_VENDOR_ID); \
3763 s->subtype = htons(ENUM); \
3767 ofputil_put_##ENUM(struct ofpbuf *buf) \
3769 struct STRUCT *s = ofpbuf_put_uninit(buf, sizeof *s); \
3770 ofputil_init_##ENUM(s); \
3773 #include "ofp-util.def"
3776 ofputil_normalize_match__(struct match *match, bool may_log)
3779 MAY_NW_ADDR = 1 << 0, /* nw_src, nw_dst */
3780 MAY_TP_ADDR = 1 << 1, /* tp_src, tp_dst */
3781 MAY_NW_PROTO = 1 << 2, /* nw_proto */
3782 MAY_IPVx = 1 << 3, /* tos, frag, ttl */
3783 MAY_ARP_SHA = 1 << 4, /* arp_sha */
3784 MAY_ARP_THA = 1 << 5, /* arp_tha */
3785 MAY_IPV6 = 1 << 6, /* ipv6_src, ipv6_dst, ipv6_label */
3786 MAY_ND_TARGET = 1 << 7 /* nd_target */
3789 struct flow_wildcards wc;
3791 /* Figure out what fields may be matched. */
3792 if (match->flow.dl_type == htons(ETH_TYPE_IP)) {
3793 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_NW_ADDR;
3794 if (match->flow.nw_proto == IPPROTO_TCP ||
3795 match->flow.nw_proto == IPPROTO_UDP ||
3796 match->flow.nw_proto == IPPROTO_ICMP) {
3797 may_match |= MAY_TP_ADDR;
3799 } else if (match->flow.dl_type == htons(ETH_TYPE_IPV6)) {
3800 may_match = MAY_NW_PROTO | MAY_IPVx | MAY_IPV6;
3801 if (match->flow.nw_proto == IPPROTO_TCP ||
3802 match->flow.nw_proto == IPPROTO_UDP) {
3803 may_match |= MAY_TP_ADDR;
3804 } else if (match->flow.nw_proto == IPPROTO_ICMPV6) {
3805 may_match |= MAY_TP_ADDR;
3806 if (match->flow.tp_src == htons(ND_NEIGHBOR_SOLICIT)) {
3807 may_match |= MAY_ND_TARGET | MAY_ARP_SHA;
3808 } else if (match->flow.tp_src == htons(ND_NEIGHBOR_ADVERT)) {
3809 may_match |= MAY_ND_TARGET | MAY_ARP_THA;
3812 } else if (match->flow.dl_type == htons(ETH_TYPE_ARP) ||
3813 match->flow.dl_type == htons(ETH_TYPE_RARP)) {
3814 may_match = MAY_NW_PROTO | MAY_NW_ADDR | MAY_ARP_SHA | MAY_ARP_THA;
3819 /* Clear the fields that may not be matched. */
3821 if (!(may_match & MAY_NW_ADDR)) {
3822 wc.masks.nw_src = wc.masks.nw_dst = htonl(0);
3824 if (!(may_match & MAY_TP_ADDR)) {
3825 wc.masks.tp_src = wc.masks.tp_dst = htons(0);
3827 if (!(may_match & MAY_NW_PROTO)) {
3828 wc.masks.nw_proto = 0;
3830 if (!(may_match & MAY_IPVx)) {
3831 wc.masks.nw_tos = 0;
3832 wc.masks.nw_ttl = 0;
3834 if (!(may_match & MAY_ARP_SHA)) {
3835 memset(wc.masks.arp_sha, 0, ETH_ADDR_LEN);
3837 if (!(may_match & MAY_ARP_THA)) {
3838 memset(wc.masks.arp_tha, 0, ETH_ADDR_LEN);
3840 if (!(may_match & MAY_IPV6)) {
3841 wc.masks.ipv6_src = wc.masks.ipv6_dst = in6addr_any;
3842 wc.masks.ipv6_label = htonl(0);
3844 if (!(may_match & MAY_ND_TARGET)) {
3845 wc.masks.nd_target = in6addr_any;
3848 /* Log any changes. */
3849 if (!flow_wildcards_equal(&wc, &match->wc)) {
3850 bool log = may_log && !VLOG_DROP_INFO(&bad_ofmsg_rl);
3851 char *pre = log ? match_to_string(match, OFP_DEFAULT_PRIORITY) : NULL;
3854 match_zero_wildcarded_fields(match);
3857 char *post = match_to_string(match, OFP_DEFAULT_PRIORITY);
3858 VLOG_INFO("normalization changed ofp_match, details:");
3859 VLOG_INFO(" pre: %s", pre);
3860 VLOG_INFO("post: %s", post);
3867 /* "Normalizes" the wildcards in 'match'. That means:
3869 * 1. If the type of level N is known, then only the valid fields for that
3870 * level may be specified. For example, ARP does not have a TOS field,
3871 * so nw_tos must be wildcarded if 'match' specifies an ARP flow.
3872 * Similarly, IPv4 does not have any IPv6 addresses, so ipv6_src and
3873 * ipv6_dst (and other fields) must be wildcarded if 'match' specifies an
3876 * 2. If the type of level N is not known (or not understood by Open
3877 * vSwitch), then no fields at all for that level may be specified. For
3878 * example, Open vSwitch does not understand SCTP, an L4 protocol, so the
3879 * L4 fields tp_src and tp_dst must be wildcarded if 'match' specifies an
3882 * If this function changes 'match', it logs a rate-limited informational
3885 ofputil_normalize_match(struct match *match)
3887 ofputil_normalize_match__(match, true);
3890 /* Same as ofputil_normalize_match() without the logging. Thus, this function
3891 * is suitable for a program's internal use, whereas ofputil_normalize_match()
3892 * sense for use on flows received from elsewhere (so that a bug in the program
3893 * that sent them can be reported and corrected). */
3895 ofputil_normalize_match_quiet(struct match *match)
3897 ofputil_normalize_match__(match, false);
3900 /* Parses a key or a key-value pair from '*stringp'.
3902 * On success: Stores the key into '*keyp'. Stores the value, if present, into
3903 * '*valuep', otherwise an empty string. Advances '*stringp' past the end of
3904 * the key-value pair, preparing it for another call. '*keyp' and '*valuep'
3905 * are substrings of '*stringp' created by replacing some of its bytes by null
3906 * terminators. Returns true.
3908 * If '*stringp' is just white space or commas, sets '*keyp' and '*valuep' to
3909 * NULL and returns false. */
3911 ofputil_parse_key_value(char **stringp, char **keyp, char **valuep)
3913 char *pos, *key, *value;
3917 pos += strspn(pos, ", \t\r\n");
3919 *keyp = *valuep = NULL;
3924 key_len = strcspn(pos, ":=(, \t\r\n");
3925 if (key[key_len] == ':' || key[key_len] == '=') {
3926 /* The value can be separated by a colon. */
3929 value = key + key_len + 1;
3930 value_len = strcspn(value, ", \t\r\n");
3931 pos = value + value_len + (value[value_len] != '\0');
3932 value[value_len] = '\0';
3933 } else if (key[key_len] == '(') {
3934 /* The value can be surrounded by balanced parentheses. The outermost
3935 * set of parentheses is removed. */
3939 value = key + key_len + 1;
3940 for (value_len = 0; level > 0; value_len++) {
3941 switch (value[value_len]) {
3955 value[value_len - 1] = '\0';
3956 pos = value + value_len;
3958 /* There might be no value at all. */
3959 value = key + key_len; /* Will become the empty string below. */
3960 pos = key + key_len + (key[key_len] != '\0');
3962 key[key_len] = '\0';
3970 /* Encode a dump ports request for 'port', the encoded message
3971 * will be fore Open Flow version 'ofp_version'. Returns message
3972 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
3974 ofputil_encode_dump_ports_request(enum ofp_version ofp_version, int16_t port)
3976 struct ofpbuf *request;
3978 switch (ofp_version) {
3979 case OFP10_VERSION: {
3980 struct ofp10_port_stats_request *req;
3981 request = ofpraw_alloc(OFPRAW_OFPST10_PORT_REQUEST, ofp_version, 0);
3982 req = ofpbuf_put_zeros(request, sizeof *req);
3983 req->port_no = htons(port);
3987 case OFP12_VERSION: {
3988 struct ofp11_port_stats_request *req;
3989 request = ofpraw_alloc(OFPRAW_OFPST11_PORT_REQUEST, ofp_version, 0);
3990 req = ofpbuf_put_zeros(request, sizeof *req);
3991 req->port_no = ofputil_port_to_ofp11(port);
4002 ofputil_port_stats_to_ofp10(const struct ofputil_port_stats *ops,
4003 struct ofp10_port_stats *ps10)
4005 ps10->port_no = htons(ops->port_no);
4006 memset(ps10->pad, 0, sizeof ps10->pad);
4007 put_32aligned_be64(&ps10->rx_packets, htonll(ops->stats.rx_packets));
4008 put_32aligned_be64(&ps10->tx_packets, htonll(ops->stats.tx_packets));
4009 put_32aligned_be64(&ps10->rx_bytes, htonll(ops->stats.rx_bytes));
4010 put_32aligned_be64(&ps10->tx_bytes, htonll(ops->stats.tx_bytes));
4011 put_32aligned_be64(&ps10->rx_dropped, htonll(ops->stats.rx_dropped));
4012 put_32aligned_be64(&ps10->tx_dropped, htonll(ops->stats.tx_dropped));
4013 put_32aligned_be64(&ps10->rx_errors, htonll(ops->stats.rx_errors));
4014 put_32aligned_be64(&ps10->tx_errors, htonll(ops->stats.tx_errors));
4015 put_32aligned_be64(&ps10->rx_frame_err, htonll(ops->stats.rx_frame_errors));
4016 put_32aligned_be64(&ps10->rx_over_err, htonll(ops->stats.rx_over_errors));
4017 put_32aligned_be64(&ps10->rx_crc_err, htonll(ops->stats.rx_crc_errors));
4018 put_32aligned_be64(&ps10->collisions, htonll(ops->stats.collisions));
4022 ofputil_port_stats_to_ofp11(const struct ofputil_port_stats *ops,
4023 struct ofp11_port_stats *ps11)
4025 ps11->port_no = ofputil_port_to_ofp11(ops->port_no);
4026 memset(ps11->pad, 0, sizeof ps11->pad);
4027 ps11->rx_packets = htonll(ops->stats.rx_packets);
4028 ps11->tx_packets = htonll(ops->stats.tx_packets);
4029 ps11->rx_bytes = htonll(ops->stats.rx_bytes);
4030 ps11->tx_bytes = htonll(ops->stats.tx_bytes);
4031 ps11->rx_dropped = htonll(ops->stats.rx_dropped);
4032 ps11->tx_dropped = htonll(ops->stats.tx_dropped);
4033 ps11->rx_errors = htonll(ops->stats.rx_errors);
4034 ps11->tx_errors = htonll(ops->stats.tx_errors);
4035 ps11->rx_frame_err = htonll(ops->stats.rx_frame_errors);
4036 ps11->rx_over_err = htonll(ops->stats.rx_over_errors);
4037 ps11->rx_crc_err = htonll(ops->stats.rx_crc_errors);
4038 ps11->collisions = htonll(ops->stats.collisions);
4041 /* Encode a ports stat for 'ops' and append it to 'replies'. */
4043 ofputil_append_port_stat(struct list *replies,
4044 const struct ofputil_port_stats *ops)
4046 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
4047 struct ofp_header *oh = msg->data;
4049 switch ((enum ofp_version)oh->version) {
4051 case OFP11_VERSION: {
4052 struct ofp11_port_stats *reply = ofpmp_append(replies, sizeof *reply);
4053 ofputil_port_stats_to_ofp11(ops, reply);
4057 case OFP10_VERSION: {
4058 struct ofp10_port_stats *reply = ofpmp_append(replies, sizeof *reply);
4059 ofputil_port_stats_to_ofp10(ops, reply);
4069 ofputil_port_stats_from_ofp10(struct ofputil_port_stats *ops,
4070 const struct ofp10_port_stats *ps10)
4072 memset(ops, 0, sizeof *ops);
4074 ops->port_no = ntohs(ps10->port_no);
4075 ops->stats.rx_packets = ntohll(get_32aligned_be64(&ps10->rx_packets));
4076 ops->stats.tx_packets = ntohll(get_32aligned_be64(&ps10->tx_packets));
4077 ops->stats.rx_bytes = ntohll(get_32aligned_be64(&ps10->rx_bytes));
4078 ops->stats.tx_bytes = ntohll(get_32aligned_be64(&ps10->tx_bytes));
4079 ops->stats.rx_dropped = ntohll(get_32aligned_be64(&ps10->rx_dropped));
4080 ops->stats.tx_dropped = ntohll(get_32aligned_be64(&ps10->tx_dropped));
4081 ops->stats.rx_errors = ntohll(get_32aligned_be64(&ps10->rx_errors));
4082 ops->stats.tx_errors = ntohll(get_32aligned_be64(&ps10->tx_errors));
4083 ops->stats.rx_frame_errors =
4084 ntohll(get_32aligned_be64(&ps10->rx_frame_err));
4085 ops->stats.rx_over_errors = ntohll(get_32aligned_be64(&ps10->rx_over_err));
4086 ops->stats.rx_crc_errors = ntohll(get_32aligned_be64(&ps10->rx_crc_err));
4087 ops->stats.collisions = ntohll(get_32aligned_be64(&ps10->collisions));
4093 ofputil_port_stats_from_ofp11(struct ofputil_port_stats *ops,
4094 const struct ofp11_port_stats *ps11)
4098 memset(ops, 0, sizeof *ops);
4099 error = ofputil_port_from_ofp11(ps11->port_no, &ops->port_no);
4104 ops->stats.rx_packets = ntohll(ps11->rx_packets);
4105 ops->stats.tx_packets = ntohll(ps11->tx_packets);
4106 ops->stats.rx_bytes = ntohll(ps11->rx_bytes);
4107 ops->stats.tx_bytes = ntohll(ps11->tx_bytes);
4108 ops->stats.rx_dropped = ntohll(ps11->rx_dropped);
4109 ops->stats.tx_dropped = ntohll(ps11->tx_dropped);
4110 ops->stats.rx_errors = ntohll(ps11->rx_errors);
4111 ops->stats.tx_errors = ntohll(ps11->tx_errors);
4112 ops->stats.rx_frame_errors = ntohll(ps11->rx_frame_err);
4113 ops->stats.rx_over_errors = ntohll(ps11->rx_over_err);
4114 ops->stats.rx_crc_errors = ntohll(ps11->rx_crc_err);
4115 ops->stats.collisions = ntohll(ps11->collisions);
4120 /* Returns the number of port stats elements in OFPTYPE_PORT_STATS_REPLY
4123 ofputil_count_port_stats(const struct ofp_header *oh)
4127 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4128 ofpraw_pull_assert(&b);
4130 BUILD_ASSERT(sizeof(struct ofp10_port_stats) ==
4131 sizeof(struct ofp11_port_stats));
4132 return b.size / sizeof(struct ofp10_port_stats);
4135 /* Converts an OFPST_PORT_STATS reply in 'msg' into an abstract
4136 * ofputil_port_stats in 'ps'.
4138 * Multiple OFPST_PORT_STATS replies can be packed into a single OpenFlow
4139 * message. Calling this function multiple times for a single 'msg' iterates
4140 * through the replies. The caller must initially leave 'msg''s layer pointers
4141 * null and not modify them between calls.
4143 * Returns 0 if successful, EOF if no replies were left in this 'msg',
4144 * otherwise a positive errno value. */
4146 ofputil_decode_port_stats(struct ofputil_port_stats *ps, struct ofpbuf *msg)
4152 ? ofpraw_decode(&raw, msg->l2)
4153 : ofpraw_pull(&raw, msg));
4160 } else if (raw == OFPRAW_OFPST11_PORT_REPLY) {
4161 const struct ofp11_port_stats *ps11;
4163 ps11 = ofpbuf_try_pull(msg, sizeof *ps11);
4165 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover "
4166 "bytes at end", msg->size);
4167 return OFPERR_OFPBRC_BAD_LEN;
4169 return ofputil_port_stats_from_ofp11(ps, ps11);
4170 } else if (raw == OFPRAW_OFPST10_PORT_REPLY) {
4171 const struct ofp10_port_stats *ps10;
4173 ps10 = ofpbuf_try_pull(msg, sizeof *ps10);
4175 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_PORT reply has %zu leftover "
4176 "bytes at end", msg->size);
4177 return OFPERR_OFPBRC_BAD_LEN;
4179 return ofputil_port_stats_from_ofp10(ps, ps10);
4186 /* Parse a port status request message into a 16 bit OpenFlow 1.0
4187 * port number and stores the latter in '*ofp10_port'.
4188 * Returns 0 if successful, otherwise an OFPERR_* number. */
4190 ofputil_decode_port_stats_request(const struct ofp_header *request,
4191 uint16_t *ofp10_port)
4193 switch ((enum ofp_version)request->version) {
4195 case OFP11_VERSION: {
4196 const struct ofp11_port_stats_request *psr11 = ofpmsg_body(request);
4197 return ofputil_port_from_ofp11(psr11->port_no, ofp10_port);
4200 case OFP10_VERSION: {
4201 const struct ofp10_port_stats_request *psr10 = ofpmsg_body(request);
4202 *ofp10_port = ntohs(psr10->port_no);
4211 /* Parse a queue status request message into 'oqsr'.
4212 * Returns 0 if successful, otherwise an OFPERR_* number. */
4214 ofputil_decode_queue_stats_request(const struct ofp_header *request,
4215 struct ofputil_queue_stats_request *oqsr)
4217 switch ((enum ofp_version)request->version) {
4219 case OFP11_VERSION: {
4220 const struct ofp11_queue_stats_request *qsr11 = ofpmsg_body(request);
4221 oqsr->queue_id = ntohl(qsr11->queue_id);
4222 return ofputil_port_from_ofp11(qsr11->port_no, &oqsr->port_no);
4225 case OFP10_VERSION: {
4226 const struct ofp10_queue_stats_request *qsr11 = ofpmsg_body(request);
4227 oqsr->queue_id = ntohl(qsr11->queue_id);
4228 oqsr->port_no = ntohs(qsr11->port_no);
4237 /* Encode a queue statsrequest for 'oqsr', the encoded message
4238 * will be fore Open Flow version 'ofp_version'. Returns message
4239 * as a struct ofpbuf. Returns encoded message on success, NULL on error */
4241 ofputil_encode_queue_stats_request(enum ofp_version ofp_version,
4242 const struct ofputil_queue_stats_request *oqsr)
4244 struct ofpbuf *request;
4246 switch (ofp_version) {
4248 case OFP12_VERSION: {
4249 struct ofp11_queue_stats_request *req;
4250 request = ofpraw_alloc(OFPRAW_OFPST11_QUEUE_REQUEST, ofp_version, 0);
4251 req = ofpbuf_put_zeros(request, sizeof *req);
4252 req->port_no = ofputil_port_to_ofp11(oqsr->port_no);
4253 req->queue_id = htonl(oqsr->queue_id);
4256 case OFP10_VERSION: {
4257 struct ofp10_queue_stats_request *req;
4258 request = ofpraw_alloc(OFPRAW_OFPST10_QUEUE_REQUEST, ofp_version, 0);
4259 req = ofpbuf_put_zeros(request, sizeof *req);
4260 req->port_no = htons(oqsr->port_no);
4261 req->queue_id = htonl(oqsr->queue_id);
4271 /* Returns the number of queue stats elements in OFPTYPE_QUEUE_STATS_REPLY
4274 ofputil_count_queue_stats(const struct ofp_header *oh)
4278 ofpbuf_use_const(&b, oh, ntohs(oh->length));
4279 ofpraw_pull_assert(&b);
4281 BUILD_ASSERT(sizeof(struct ofp10_queue_stats) ==
4282 sizeof(struct ofp11_queue_stats));
4283 return b.size / sizeof(struct ofp10_queue_stats);
4287 ofputil_queue_stats_from_ofp10(struct ofputil_queue_stats *oqs,
4288 const struct ofp10_queue_stats *qs10)
4290 oqs->port_no = ntohs(qs10->port_no);
4291 oqs->queue_id = ntohl(qs10->queue_id);
4292 oqs->stats.tx_bytes = ntohll(get_32aligned_be64(&qs10->tx_bytes));
4293 oqs->stats.tx_packets = ntohll(get_32aligned_be64(&qs10->tx_packets));
4294 oqs->stats.tx_errors = ntohll(get_32aligned_be64(&qs10->tx_errors));
4300 ofputil_queue_stats_from_ofp11(struct ofputil_queue_stats *oqs,
4301 const struct ofp11_queue_stats *qs11)
4305 error = ofputil_port_from_ofp11(qs11->port_no, &oqs->port_no);
4310 oqs->queue_id = ntohl(qs11->queue_id);
4311 oqs->stats.tx_bytes = ntohll(qs11->tx_bytes);
4312 oqs->stats.tx_packets = ntohll(qs11->tx_packets);
4313 oqs->stats.tx_errors = ntohll(qs11->tx_errors);
4318 /* Converts an OFPST_QUEUE_STATS reply in 'msg' into an abstract
4319 * ofputil_queue_stats in 'qs'.
4321 * Multiple OFPST_QUEUE_STATS replies can be packed into a single OpenFlow
4322 * message. Calling this function multiple times for a single 'msg' iterates
4323 * through the replies. The caller must initially leave 'msg''s layer pointers
4324 * null and not modify them between calls.
4326 * Returns 0 if successful, EOF if no replies were left in this 'msg',
4327 * otherwise a positive errno value. */
4329 ofputil_decode_queue_stats(struct ofputil_queue_stats *qs, struct ofpbuf *msg)
4335 ? ofpraw_decode(&raw, msg->l2)
4336 : ofpraw_pull(&raw, msg));
4343 } else if (raw == OFPRAW_OFPST11_QUEUE_REPLY) {
4344 const struct ofp11_queue_stats *qs11;
4346 qs11 = ofpbuf_try_pull(msg, sizeof *qs11);
4348 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover "
4349 "bytes at end", msg->size);
4350 return OFPERR_OFPBRC_BAD_LEN;
4352 return ofputil_queue_stats_from_ofp11(qs, qs11);
4353 } else if (raw == OFPRAW_OFPST10_QUEUE_REPLY) {
4354 const struct ofp10_queue_stats *qs10;
4356 qs10 = ofpbuf_try_pull(msg, sizeof *qs10);
4358 VLOG_WARN_RL(&bad_ofmsg_rl, "OFPST_QUEUE reply has %zu leftover "
4359 "bytes at end", msg->size);
4360 return OFPERR_OFPBRC_BAD_LEN;
4362 return ofputil_queue_stats_from_ofp10(qs, qs10);
4369 ofputil_queue_stats_to_ofp10(const struct ofputil_queue_stats *oqs,
4370 struct ofp10_queue_stats *qs10)
4372 qs10->port_no = htons(oqs->port_no);
4373 memset(qs10->pad, 0, sizeof qs10->pad);
4374 qs10->queue_id = htonl(oqs->queue_id);
4375 put_32aligned_be64(&qs10->tx_bytes, htonll(oqs->stats.tx_bytes));
4376 put_32aligned_be64(&qs10->tx_packets, htonll(oqs->stats.tx_packets));
4377 put_32aligned_be64(&qs10->tx_errors, htonll(oqs->stats.tx_errors));
4381 ofputil_queue_stats_to_ofp11(const struct ofputil_queue_stats *oqs,
4382 struct ofp11_queue_stats *qs11)
4384 qs11->port_no = ofputil_port_to_ofp11(oqs->port_no);
4385 qs11->queue_id = htonl(oqs->queue_id);
4386 qs11->tx_bytes = htonll(oqs->stats.tx_bytes);
4387 qs11->tx_packets = htonll(oqs->stats.tx_packets);
4388 qs11->tx_errors = htonll(oqs->stats.tx_errors);
4391 /* Encode a queue stat for 'oqs' and append it to 'replies'. */
4393 ofputil_append_queue_stat(struct list *replies,
4394 const struct ofputil_queue_stats *oqs)
4396 struct ofpbuf *msg = ofpbuf_from_list(list_back(replies));
4397 struct ofp_header *oh = msg->data;
4399 switch ((enum ofp_version)oh->version) {
4401 case OFP11_VERSION: {
4402 struct ofp11_queue_stats *reply = ofpmp_append(replies, sizeof *reply);;
4403 ofputil_queue_stats_to_ofp11(oqs, reply);
4407 case OFP10_VERSION: {
4408 struct ofp10_queue_stats *reply = ofpmp_append(replies, sizeof *reply);;
4409 ofputil_queue_stats_to_ofp10(oqs, reply);