2 * Copyright (c) 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include "ofp-parse.h"
24 #include <netinet/in.h>
26 #include "byte-order.h"
27 #include "dynamic-string.h"
29 #include "meta-flow.h"
30 #include "multipath.h"
33 #include "ofp-actions.h"
36 #include "openflow/openflow.h"
37 #include "ovs-thread.h"
40 #include "socket-util.h"
41 #include "openvswitch/vconn.h"
43 /* Parses 'str' as an 8-bit unsigned integer into '*valuep'.
45 * 'name' describes the value parsed in an error message, if any.
47 * Returns NULL if successful, otherwise a malloc()'d string describing the
48 * error. The caller is responsible for freeing the returned string. */
49 char * OVS_WARN_UNUSED_RESULT
50 str_to_u8(const char *str
, const char *name
, uint8_t *valuep
)
54 if (!str_to_int(str
, 0, &value
) || value
< 0 || value
> 255) {
55 return xasprintf("invalid %s \"%s\"", name
, str
);
61 /* Parses 'str' as a 16-bit unsigned integer into '*valuep'.
63 * 'name' describes the value parsed in an error message, if any.
65 * Returns NULL if successful, otherwise a malloc()'d string describing the
66 * error. The caller is responsible for freeing the returned string. */
67 char * OVS_WARN_UNUSED_RESULT
68 str_to_u16(const char *str
, const char *name
, uint16_t *valuep
)
72 if (!str_to_int(str
, 0, &value
) || value
< 0 || value
> 65535) {
73 return xasprintf("invalid %s \"%s\"", name
, str
);
79 /* Parses 'str' as a 32-bit unsigned integer into '*valuep'.
81 * Returns NULL if successful, otherwise a malloc()'d string describing the
82 * error. The caller is responsible for freeing the returned string. */
83 char * OVS_WARN_UNUSED_RESULT
84 str_to_u32(const char *str
, uint32_t *valuep
)
90 return xstrdup("missing required numeric argument");
94 value
= strtoul(str
, &tail
, 0);
95 if (errno
== EINVAL
|| errno
== ERANGE
|| *tail
) {
96 return xasprintf("invalid numeric format %s", str
);
102 /* Parses 'str' as an 64-bit unsigned integer into '*valuep'.
104 * Returns NULL if successful, otherwise a malloc()'d string describing the
105 * error. The caller is responsible for freeing the returned string. */
106 char * OVS_WARN_UNUSED_RESULT
107 str_to_u64(const char *str
, uint64_t *valuep
)
113 return xstrdup("missing required numeric argument");
117 value
= strtoull(str
, &tail
, 0);
118 if (errno
== EINVAL
|| errno
== ERANGE
|| *tail
) {
119 return xasprintf("invalid numeric format %s", str
);
125 /* Parses 'str' as an 64-bit unsigned integer in network byte order into
128 * Returns NULL if successful, otherwise a malloc()'d string describing the
129 * error. The caller is responsible for freeing the returned string. */
130 char * OVS_WARN_UNUSED_RESULT
131 str_to_be64(const char *str
, ovs_be64
*valuep
)
136 error
= str_to_u64(str
, &value
);
138 *valuep
= htonll(value
);
143 /* Parses 'str' as an Ethernet address into 'mac'.
145 * Returns NULL if successful, otherwise a malloc()'d string describing the
146 * error. The caller is responsible for freeing the returned string. */
147 char * OVS_WARN_UNUSED_RESULT
148 str_to_mac(const char *str
, struct eth_addr
*mac
)
150 if (!ovs_scan(str
, ETH_ADDR_SCAN_FMT
, ETH_ADDR_SCAN_ARGS(*mac
))) {
151 return xasprintf("invalid mac address %s", str
);
156 /* Parses 'str' as an IP address into '*ip'.
158 * Returns NULL if successful, otherwise a malloc()'d string describing the
159 * error. The caller is responsible for freeing the returned string. */
160 char * OVS_WARN_UNUSED_RESULT
161 str_to_ip(const char *str
, ovs_be32
*ip
)
163 struct in_addr in_addr
;
165 if (lookup_ip(str
, &in_addr
)) {
166 return xasprintf("%s: could not convert to IP address", str
);
168 *ip
= in_addr
.s_addr
;
172 /* Parses 'str' as a conntrack helper into 'alg'.
174 * Returns NULL if successful, otherwise a malloc()'d string describing the
175 * error. The caller is responsible for freeing the returned string. */
176 char * OVS_WARN_UNUSED_RESULT
177 str_to_connhelper(const char *str
, uint16_t *alg
)
179 if (!strcmp(str
, "ftp")) {
183 return xasprintf("invalid conntrack helper \"%s\"", str
);
193 parse_protocol(const char *name
, const struct protocol
**p_out
)
195 static const struct protocol protocols
[] = {
196 { "ip", ETH_TYPE_IP
, 0 },
197 { "ipv4", ETH_TYPE_IP
, 0 },
198 { "ip4", ETH_TYPE_IP
, 0 },
199 { "arp", ETH_TYPE_ARP
, 0 },
200 { "icmp", ETH_TYPE_IP
, IPPROTO_ICMP
},
201 { "tcp", ETH_TYPE_IP
, IPPROTO_TCP
},
202 { "udp", ETH_TYPE_IP
, IPPROTO_UDP
},
203 { "sctp", ETH_TYPE_IP
, IPPROTO_SCTP
},
204 { "ipv6", ETH_TYPE_IPV6
, 0 },
205 { "ip6", ETH_TYPE_IPV6
, 0 },
206 { "icmp6", ETH_TYPE_IPV6
, IPPROTO_ICMPV6
},
207 { "tcp6", ETH_TYPE_IPV6
, IPPROTO_TCP
},
208 { "udp6", ETH_TYPE_IPV6
, IPPROTO_UDP
},
209 { "sctp6", ETH_TYPE_IPV6
, IPPROTO_SCTP
},
210 { "rarp", ETH_TYPE_RARP
, 0},
211 { "mpls", ETH_TYPE_MPLS
, 0 },
212 { "mplsm", ETH_TYPE_MPLS_MCAST
, 0 },
214 const struct protocol
*p
;
216 for (p
= protocols
; p
< &protocols
[ARRAY_SIZE(protocols
)]; p
++) {
217 if (!strcmp(p
->name
, name
)) {
226 /* Parses 's' as the (possibly masked) value of field 'mf', and updates
227 * 'match' appropriately. Restricts the set of usable protocols to ones
228 * supporting the parsed field.
230 * Returns NULL if successful, otherwise a malloc()'d string describing the
231 * error. The caller is responsible for freeing the returned string. */
232 static char * OVS_WARN_UNUSED_RESULT
233 parse_field(const struct mf_field
*mf
, const char *s
, struct match
*match
,
234 enum ofputil_protocol
*usable_protocols
)
236 union mf_value value
, mask
;
240 /* If there's no string, we're just trying to match on the
241 * existence of the field, so use a no-op value. */
245 error
= mf_parse(mf
, s
, &value
, &mask
);
247 *usable_protocols
&= mf_set(mf
, &value
, &mask
, match
, &error
);
253 extract_actions(char *s
)
255 s
= strstr(s
, "action");
258 s
= strchr(s
+ 1, '=');
259 return s
? s
+ 1 : NULL
;
266 static char * OVS_WARN_UNUSED_RESULT
267 parse_ofp_str__(struct ofputil_flow_mod
*fm
, int command
, char *string
,
268 enum ofputil_protocol
*usable_protocols
)
273 F_IMPORTANCE
= 1 << 2,
278 char *act_str
= NULL
;
281 *usable_protocols
= OFPUTIL_P_ANY
;
286 string
+= strspn(string
, " \t\r\n"); /* Skip white space. */
287 len
= strcspn(string
, ", \t\r\n"); /* Get length of the first token. */
289 if (!strncmp(string
, "add", len
)) {
291 } else if (!strncmp(string
, "delete", len
)) {
292 command
= OFPFC_DELETE
;
293 } else if (!strncmp(string
, "delete_strict", len
)) {
294 command
= OFPFC_DELETE_STRICT
;
295 } else if (!strncmp(string
, "modify", len
)) {
296 command
= OFPFC_MODIFY
;
297 } else if (!strncmp(string
, "modify_strict", len
)) {
298 command
= OFPFC_MODIFY_STRICT
;
312 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
| F_IMPORTANCE
;
319 case OFPFC_DELETE_STRICT
:
320 fields
= F_OUT_PORT
| F_PRIORITY
;
324 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
327 case OFPFC_MODIFY_STRICT
:
328 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
335 *fm
= (struct ofputil_flow_mod
) {
336 .match
= MATCH_CATCHALL_INITIALIZER
,
337 .priority
= OFP_DEFAULT_PRIORITY
,
340 .buffer_id
= UINT32_MAX
,
341 .out_port
= OFPP_ANY
,
342 .out_group
= OFPG_ANY
,
343 .delete_reason
= OFPRR_DELETE
,
345 /* For modify, by default, don't update the cookie. */
346 if (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
) {
347 fm
->new_cookie
= OVS_BE64_MAX
;
350 if (fields
& F_ACTIONS
) {
351 act_str
= extract_actions(string
);
353 return xstrdup("must specify an action");
357 while (ofputil_parse_key_value(&string
, &name
, &value
)) {
358 const struct protocol
*p
;
361 if (parse_protocol(name
, &p
)) {
362 match_set_dl_type(&fm
->match
, htons(p
->dl_type
));
364 match_set_nw_proto(&fm
->match
, p
->nw_proto
);
366 } else if (fields
& F_FLAGS
&& !strcmp(name
, "send_flow_rem")) {
367 fm
->flags
|= OFPUTIL_FF_SEND_FLOW_REM
;
368 } else if (fields
& F_FLAGS
&& !strcmp(name
, "check_overlap")) {
369 fm
->flags
|= OFPUTIL_FF_CHECK_OVERLAP
;
370 } else if (fields
& F_FLAGS
&& !strcmp(name
, "reset_counts")) {
371 fm
->flags
|= OFPUTIL_FF_RESET_COUNTS
;
372 *usable_protocols
&= OFPUTIL_P_OF12_UP
;
373 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_packet_counts")) {
374 fm
->flags
|= OFPUTIL_FF_NO_PKT_COUNTS
;
375 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
376 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_byte_counts")) {
377 fm
->flags
|= OFPUTIL_FF_NO_BYT_COUNTS
;
378 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
379 } else if (!strcmp(name
, "no_readonly_table")
380 || !strcmp(name
, "allow_hidden_fields")) {
381 /* ignore these fields. */
382 } else if (mf_from_name(name
)) {
383 error
= parse_field(mf_from_name(name
), value
, &fm
->match
,
387 return xasprintf("field %s missing value", name
);
390 if (!strcmp(name
, "table")) {
391 error
= str_to_u8(value
, "table", &fm
->table_id
);
392 if (fm
->table_id
!= 0xff) {
393 *usable_protocols
&= OFPUTIL_P_TID
;
395 } else if (fields
& F_OUT_PORT
&& !strcmp(name
, "out_port")) {
396 if (!ofputil_port_from_string(value
, &fm
->out_port
)) {
397 error
= xasprintf("%s is not a valid OpenFlow port",
400 } else if (fields
& F_OUT_PORT
&& !strcmp(name
, "out_group")) {
401 *usable_protocols
&= OFPUTIL_P_OF11_UP
;
402 if (!ofputil_group_from_string(value
, &fm
->out_group
)) {
403 error
= xasprintf("%s is not a valid OpenFlow group",
406 } else if (fields
& F_PRIORITY
&& !strcmp(name
, "priority")) {
407 uint16_t priority
= 0;
409 error
= str_to_u16(value
, name
, &priority
);
410 fm
->priority
= priority
;
411 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "idle_timeout")) {
412 error
= str_to_u16(value
, name
, &fm
->idle_timeout
);
413 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "hard_timeout")) {
414 error
= str_to_u16(value
, name
, &fm
->hard_timeout
);
415 } else if (fields
& F_IMPORTANCE
&& !strcmp(name
, "importance")) {
416 error
= str_to_u16(value
, name
, &fm
->importance
);
417 } else if (!strcmp(name
, "cookie")) {
418 char *mask
= strchr(value
, '/');
421 /* A mask means we're searching for a cookie. */
422 if (command
== OFPFC_ADD
) {
423 return xstrdup("flow additions cannot use "
427 error
= str_to_be64(value
, &fm
->cookie
);
431 error
= str_to_be64(mask
+ 1, &fm
->cookie_mask
);
433 /* Matching of the cookie is only supported through NXM or
435 if (fm
->cookie_mask
!= htonll(0)) {
436 *usable_protocols
&= OFPUTIL_P_NXM_OF11_UP
;
439 /* No mask means that the cookie is being set. */
440 if (command
!= OFPFC_ADD
&& command
!= OFPFC_MODIFY
441 && command
!= OFPFC_MODIFY_STRICT
) {
442 return xstrdup("cannot set cookie");
444 error
= str_to_be64(value
, &fm
->new_cookie
);
445 fm
->modify_cookie
= true;
447 } else if (!strcmp(name
, "duration")
448 || !strcmp(name
, "n_packets")
449 || !strcmp(name
, "n_bytes")
450 || !strcmp(name
, "idle_age")
451 || !strcmp(name
, "hard_age")) {
452 /* Ignore these, so that users can feed the output of
453 * "ovs-ofctl dump-flows" back into commands that parse
456 error
= xasprintf("unknown keyword %s", name
);
464 /* Check for usable protocol interdependencies between match fields. */
465 if (fm
->match
.flow
.dl_type
== htons(ETH_TYPE_IPV6
)) {
466 const struct flow_wildcards
*wc
= &fm
->match
.wc
;
467 /* Only NXM and OXM support matching L3 and L4 fields within IPv6.
469 * (IPv6 specific fields as well as arp_sha, arp_tha, nw_frag, and
470 * nw_ttl are covered elsewhere so they don't need to be included in
473 if (wc
->masks
.nw_proto
|| wc
->masks
.nw_tos
474 || wc
->masks
.tp_src
|| wc
->masks
.tp_dst
) {
475 *usable_protocols
&= OFPUTIL_P_NXM_OXM_ANY
;
478 if (!fm
->cookie_mask
&& fm
->new_cookie
== OVS_BE64_MAX
479 && (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
)) {
480 /* On modifies without a mask, we are supposed to add a flow if
481 * one does not exist. If a cookie wasn't been specified, use a
482 * default of zero. */
483 fm
->new_cookie
= htonll(0);
485 if (fields
& F_ACTIONS
) {
486 enum ofputil_protocol action_usable_protocols
;
487 struct ofpbuf ofpacts
;
490 ofpbuf_init(&ofpacts
, 32);
491 error
= ofpacts_parse_instructions(act_str
, &ofpacts
,
492 &action_usable_protocols
);
493 *usable_protocols
&= action_usable_protocols
;
497 err
= ofpacts_check(ofpacts
.data
, ofpacts
.size
, &fm
->match
.flow
,
498 OFPP_MAX
, fm
->table_id
, 255, usable_protocols
);
499 if (!err
&& !*usable_protocols
) {
500 err
= OFPERR_OFPBAC_MATCH_INCONSISTENT
;
503 error
= xasprintf("actions are invalid with specified match "
504 "(%s)", ofperr_to_string(err
));
509 ofpbuf_uninit(&ofpacts
);
513 fm
->ofpacts_len
= ofpacts
.size
;
514 fm
->ofpacts
= ofpbuf_steal_data(&ofpacts
);
523 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
524 * page) into 'fm' for sending the specified flow_mod 'command' to a switch.
525 * Returns the set of usable protocols in '*usable_protocols'.
527 * To parse syntax for an OFPT_FLOW_MOD (or NXT_FLOW_MOD), use an OFPFC_*
528 * constant for 'command'. To parse syntax for an OFPST_FLOW or
529 * OFPST_AGGREGATE (or NXST_FLOW or NXST_AGGREGATE), use -1 for 'command'.
531 * If 'command' is given as -2, 'str_' may begin with a command name ("add",
532 * "modify", "delete", "modify_strict", or "delete_strict"). A missing command
533 * name is treated as "add".
535 * Returns NULL if successful, otherwise a malloc()'d string describing the
536 * error. The caller is responsible for freeing the returned string. */
537 char * OVS_WARN_UNUSED_RESULT
538 parse_ofp_str(struct ofputil_flow_mod
*fm
, int command
, const char *str_
,
539 enum ofputil_protocol
*usable_protocols
)
541 char *string
= xstrdup(str_
);
544 error
= parse_ofp_str__(fm
, command
, string
, usable_protocols
);
554 static char * OVS_WARN_UNUSED_RESULT
555 parse_ofp_meter_mod_str__(struct ofputil_meter_mod
*mm
, char *string
,
556 struct ofpbuf
*bands
, int command
,
557 enum ofputil_protocol
*usable_protocols
)
564 char *save_ptr
= NULL
;
565 char *band_str
= NULL
;
568 /* Meters require at least OF 1.3. */
569 *usable_protocols
= OFPUTIL_P_OF13_UP
;
577 fields
= F_METER
| F_FLAGS
| F_BANDS
;
585 fields
= F_METER
| F_FLAGS
| F_BANDS
;
592 mm
->command
= command
;
593 mm
->meter
.meter_id
= 0;
595 if (fields
& F_BANDS
) {
596 band_str
= strstr(string
, "band");
598 return xstrdup("must specify bands");
602 band_str
= strchr(band_str
+ 1, '=');
604 return xstrdup("must specify bands");
609 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
610 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
612 if (fields
& F_FLAGS
&& !strcmp(name
, "kbps")) {
613 mm
->meter
.flags
|= OFPMF13_KBPS
;
614 } else if (fields
& F_FLAGS
&& !strcmp(name
, "pktps")) {
615 mm
->meter
.flags
|= OFPMF13_PKTPS
;
616 } else if (fields
& F_FLAGS
&& !strcmp(name
, "burst")) {
617 mm
->meter
.flags
|= OFPMF13_BURST
;
618 } else if (fields
& F_FLAGS
&& !strcmp(name
, "stats")) {
619 mm
->meter
.flags
|= OFPMF13_STATS
;
623 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
625 return xasprintf("field %s missing value", name
);
628 if (!strcmp(name
, "meter")) {
629 if (!strcmp(value
, "all")) {
630 mm
->meter
.meter_id
= OFPM13_ALL
;
631 } else if (!strcmp(value
, "controller")) {
632 mm
->meter
.meter_id
= OFPM13_CONTROLLER
;
633 } else if (!strcmp(value
, "slowpath")) {
634 mm
->meter
.meter_id
= OFPM13_SLOWPATH
;
636 char *error
= str_to_u32(value
, &mm
->meter
.meter_id
);
640 if (mm
->meter
.meter_id
> OFPM13_MAX
641 || !mm
->meter
.meter_id
) {
642 return xasprintf("invalid value for %s", name
);
646 return xasprintf("unknown keyword %s", name
);
650 if (fields
& F_METER
&& !mm
->meter
.meter_id
) {
651 return xstrdup("must specify 'meter'");
653 if (fields
& F_FLAGS
&& !mm
->meter
.flags
) {
654 return xstrdup("meter must specify either 'kbps' or 'pktps'");
657 if (fields
& F_BANDS
) {
658 uint16_t n_bands
= 0;
659 struct ofputil_meter_band
*band
= NULL
;
662 for (name
= strtok_r(band_str
, "=, \t\r\n", &save_ptr
); name
;
663 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
667 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
669 return xasprintf("field %s missing value", name
);
672 if (!strcmp(name
, "type")) {
673 /* Start a new band */
674 band
= ofpbuf_put_zeros(bands
, sizeof *band
);
677 if (!strcmp(value
, "drop")) {
678 band
->type
= OFPMBT13_DROP
;
679 } else if (!strcmp(value
, "dscp_remark")) {
680 band
->type
= OFPMBT13_DSCP_REMARK
;
682 return xasprintf("field %s unknown value %s", name
, value
);
684 } else if (!band
|| !band
->type
) {
685 return xstrdup("band must start with the 'type' keyword");
686 } else if (!strcmp(name
, "rate")) {
687 char *error
= str_to_u32(value
, &band
->rate
);
691 } else if (!strcmp(name
, "burst_size")) {
692 char *error
= str_to_u32(value
, &band
->burst_size
);
696 } else if (!strcmp(name
, "prec_level")) {
697 char *error
= str_to_u8(value
, name
, &band
->prec_level
);
702 return xasprintf("unknown keyword %s", name
);
707 return xstrdup("meter must have bands");
710 mm
->meter
.n_bands
= n_bands
;
711 mm
->meter
.bands
= ofpbuf_steal_data(bands
);
713 for (i
= 0; i
< n_bands
; ++i
) {
714 band
= &mm
->meter
.bands
[i
];
717 return xstrdup("band must have 'type'");
719 if (band
->type
== OFPMBT13_DSCP_REMARK
) {
720 if (!band
->prec_level
) {
721 return xstrdup("'dscp_remark' band must have"
725 if (band
->prec_level
) {
726 return xstrdup("Only 'dscp_remark' band may have"
731 return xstrdup("band must have 'rate'");
733 if (mm
->meter
.flags
& OFPMF13_BURST
) {
734 if (!band
->burst_size
) {
735 return xstrdup("band must have 'burst_size' "
736 "when 'burst' flag is set");
739 if (band
->burst_size
) {
740 return xstrdup("band may have 'burst_size' only "
741 "when 'burst' flag is set");
746 mm
->meter
.n_bands
= 0;
747 mm
->meter
.bands
= NULL
;
753 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
754 * page) into 'mm' for sending the specified meter_mod 'command' to a switch.
756 * Returns NULL if successful, otherwise a malloc()'d string describing the
757 * error. The caller is responsible for freeing the returned string. */
758 char * OVS_WARN_UNUSED_RESULT
759 parse_ofp_meter_mod_str(struct ofputil_meter_mod
*mm
, const char *str_
,
760 int command
, enum ofputil_protocol
*usable_protocols
)
766 ofpbuf_init(&bands
, 64);
767 string
= xstrdup(str_
);
769 error
= parse_ofp_meter_mod_str__(mm
, string
, &bands
, command
,
773 ofpbuf_uninit(&bands
);
778 static char * OVS_WARN_UNUSED_RESULT
779 parse_flow_monitor_request__(struct ofputil_flow_monitor_request
*fmr
,
780 const char *str_
, char *string
,
781 enum ofputil_protocol
*usable_protocols
)
783 static atomic_count id
= ATOMIC_COUNT_INIT(0);
786 fmr
->id
= atomic_count_inc(&id
);
788 fmr
->flags
= (NXFMF_INITIAL
| NXFMF_ADD
| NXFMF_DELETE
| NXFMF_MODIFY
789 | NXFMF_OWN
| NXFMF_ACTIONS
);
790 fmr
->out_port
= OFPP_NONE
;
791 fmr
->table_id
= 0xff;
792 match_init_catchall(&fmr
->match
);
794 while (ofputil_parse_key_value(&string
, &name
, &value
)) {
795 const struct protocol
*p
;
798 if (!strcmp(name
, "!initial")) {
799 fmr
->flags
&= ~NXFMF_INITIAL
;
800 } else if (!strcmp(name
, "!add")) {
801 fmr
->flags
&= ~NXFMF_ADD
;
802 } else if (!strcmp(name
, "!delete")) {
803 fmr
->flags
&= ~NXFMF_DELETE
;
804 } else if (!strcmp(name
, "!modify")) {
805 fmr
->flags
&= ~NXFMF_MODIFY
;
806 } else if (!strcmp(name
, "!actions")) {
807 fmr
->flags
&= ~NXFMF_ACTIONS
;
808 } else if (!strcmp(name
, "!own")) {
809 fmr
->flags
&= ~NXFMF_OWN
;
810 } else if (parse_protocol(name
, &p
)) {
811 match_set_dl_type(&fmr
->match
, htons(p
->dl_type
));
813 match_set_nw_proto(&fmr
->match
, p
->nw_proto
);
815 } else if (mf_from_name(name
)) {
816 error
= parse_field(mf_from_name(name
), value
, &fmr
->match
,
820 return xasprintf("%s: field %s missing value", str_
, name
);
823 if (!strcmp(name
, "table")) {
824 error
= str_to_u8(value
, "table", &fmr
->table_id
);
825 } else if (!strcmp(name
, "out_port")) {
826 fmr
->out_port
= u16_to_ofp(atoi(value
));
828 return xasprintf("%s: unknown keyword %s", str_
, name
);
839 /* Convert 'str_' (as described in the documentation for the "monitor" command
840 * in the ovs-ofctl man page) into 'fmr'.
842 * Returns NULL if successful, otherwise a malloc()'d string describing the
843 * error. The caller is responsible for freeing the returned string. */
844 char * OVS_WARN_UNUSED_RESULT
845 parse_flow_monitor_request(struct ofputil_flow_monitor_request
*fmr
,
847 enum ofputil_protocol
*usable_protocols
)
849 char *string
= xstrdup(str_
);
850 char *error
= parse_flow_monitor_request__(fmr
, str_
, string
,
856 /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command'
857 * (one of OFPFC_*) into 'fm'.
859 * If 'command' is given as -2, 'string' may begin with a command name ("add",
860 * "modify", "delete", "modify_strict", or "delete_strict"). A missing command
861 * name is treated as "add".
863 * Returns NULL if successful, otherwise a malloc()'d string describing the
864 * error. The caller is responsible for freeing the returned string. */
865 char * OVS_WARN_UNUSED_RESULT
866 parse_ofp_flow_mod_str(struct ofputil_flow_mod
*fm
, const char *string
,
868 enum ofputil_protocol
*usable_protocols
)
870 char *error
= parse_ofp_str(fm
, command
, string
, usable_protocols
);
873 /* Normalize a copy of the match. This ensures that non-normalized
874 * flows get logged but doesn't affect what gets sent to the switch, so
875 * that the switch can do whatever it likes with the flow. */
876 struct match match_copy
= fm
->match
;
877 ofputil_normalize_match(&match_copy
);
883 /* Convert 'setting' (as described for the "mod-table" command
884 * in ovs-ofctl man page) into 'tm->table_vacancy->vacancy_up' and
885 * 'tm->table_vacancy->vacancy_down' threshold values.
886 * For the two threshold values, value of vacancy_up is always greater
887 * than value of vacancy_down.
889 * Returns NULL if successful, otherwise a malloc()'d string describing the
890 * error. The caller is responsible for freeing the returned string. */
891 char * OVS_WARN_UNUSED_RESULT
892 parse_ofp_table_vacancy(struct ofputil_table_mod
*tm
, const char *setting
)
894 char *save_ptr
= NULL
;
895 char *vac_up
, *vac_down
;
896 char *value
= xstrdup(setting
);
898 int vacancy_up
, vacancy_down
;
900 strtok_r(value
, ":", &save_ptr
);
901 vac_down
= strtok_r(NULL
, ",", &save_ptr
);
903 ret_msg
= xasprintf("Vacancy down value missing");
906 if (!str_to_int(vac_down
, 0, &vacancy_down
) ||
907 vacancy_down
< 0 || vacancy_down
> 100) {
908 ret_msg
= xasprintf("Invalid vacancy down value \"%s\"", vac_down
);
911 vac_up
= strtok_r(NULL
, ",", &save_ptr
);
913 ret_msg
= xasprintf("Vacancy up value missing");
916 if (!str_to_int(vac_up
, 0, &vacancy_up
) ||
917 vacancy_up
< 0 || vacancy_up
> 100) {
918 ret_msg
= xasprintf("Invalid vacancy up value \"%s\"", vac_up
);
921 if (vacancy_down
> vacancy_up
) {
922 ret_msg
= xasprintf("Invalid vacancy range, vacancy up should be "
923 "greater than vacancy down (%s)",
924 ofperr_to_string(OFPERR_OFPBPC_BAD_VALUE
));
929 tm
->table_vacancy
.vacancy_down
= vacancy_down
;
930 tm
->table_vacancy
.vacancy_up
= vacancy_up
;
938 /* Convert 'table_id' and 'setting' (as described for the "mod-table" command
939 * in the ovs-ofctl man page) into 'tm' for sending a table_mod command to a
942 * Stores a bitmap of the OpenFlow versions that are usable for 'tm' into
943 * '*usable_versions'.
945 * Returns NULL if successful, otherwise a malloc()'d string describing the
946 * error. The caller is responsible for freeing the returned string. */
947 char * OVS_WARN_UNUSED_RESULT
948 parse_ofp_table_mod(struct ofputil_table_mod
*tm
, const char *table_id
,
949 const char *setting
, uint32_t *usable_versions
)
951 *usable_versions
= 0;
952 if (!strcasecmp(table_id
, "all")) {
953 tm
->table_id
= OFPTT_ALL
;
955 char *error
= str_to_u8(table_id
, "table_id", &tm
->table_id
);
961 tm
->miss
= OFPUTIL_TABLE_MISS_DEFAULT
;
962 tm
->eviction
= OFPUTIL_TABLE_EVICTION_DEFAULT
;
963 tm
->eviction_flags
= UINT32_MAX
;
964 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_DEFAULT
;
965 tm
->table_vacancy
.vacancy_down
= 0;
966 tm
->table_vacancy
.vacancy_up
= 0;
967 tm
->table_vacancy
.vacancy
= 0;
968 /* Only OpenFlow 1.1 and 1.2 can configure table-miss via table_mod.
969 * Only OpenFlow 1.4+ can configure eviction and vacancy events
972 if (!strcmp(setting
, "controller")) {
973 tm
->miss
= OFPUTIL_TABLE_MISS_CONTROLLER
;
974 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
975 } else if (!strcmp(setting
, "continue")) {
976 tm
->miss
= OFPUTIL_TABLE_MISS_CONTINUE
;
977 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
978 } else if (!strcmp(setting
, "drop")) {
979 tm
->miss
= OFPUTIL_TABLE_MISS_DROP
;
980 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
981 } else if (!strcmp(setting
, "evict")) {
982 tm
->eviction
= OFPUTIL_TABLE_EVICTION_ON
;
983 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
984 } else if (!strcmp(setting
, "noevict")) {
985 tm
->eviction
= OFPUTIL_TABLE_EVICTION_OFF
;
986 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
987 } else if (!strncmp(setting
, "vacancy", strcspn(setting
, ":"))) {
988 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_ON
;
989 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
990 char *error
= parse_ofp_table_vacancy(tm
, setting
);
994 } else if (!strcmp(setting
, "novacancy")) {
995 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_OFF
;
996 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
998 return xasprintf("invalid table_mod setting %s", setting
);
1001 if (tm
->table_id
== 0xfe
1002 && tm
->miss
== OFPUTIL_TABLE_MISS_CONTINUE
) {
1003 return xstrdup("last table's flow miss handling can not be continue");
1010 /* Opens file 'file_name' and reads each line as a flow_mod of the specified
1011 * type (one of OFPFC_*). Stores each flow_mod in '*fm', an array allocated
1012 * on the caller's behalf, and the number of flow_mods in '*n_fms'.
1014 * If 'command' is given as -2, each line may start with a command name
1015 * ("add", "modify", "delete", "modify_strict", or "delete_strict"). A missing
1016 * command name is treated as "add".
1018 * Returns NULL if successful, otherwise a malloc()'d string describing the
1019 * error. The caller is responsible for freeing the returned string. */
1020 char * OVS_WARN_UNUSED_RESULT
1021 parse_ofp_flow_mod_file(const char *file_name
, int command
,
1022 struct ofputil_flow_mod
**fms
, size_t *n_fms
,
1023 enum ofputil_protocol
*usable_protocols
)
1025 size_t allocated_fms
;
1030 *usable_protocols
= OFPUTIL_P_ANY
;
1035 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1036 if (stream
== NULL
) {
1037 return xasprintf("%s: open failed (%s)",
1038 file_name
, ovs_strerror(errno
));
1041 allocated_fms
= *n_fms
;
1044 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1046 enum ofputil_protocol usable
;
1048 if (*n_fms
>= allocated_fms
) {
1049 *fms
= x2nrealloc(*fms
, &allocated_fms
, sizeof **fms
);
1051 error
= parse_ofp_flow_mod_str(&(*fms
)[*n_fms
], ds_cstr(&s
), command
,
1057 for (i
= 0; i
< *n_fms
; i
++) {
1058 free(CONST_CAST(struct ofpact
*, (*fms
)[i
].ofpacts
));
1065 if (stream
!= stdin
) {
1069 err_msg
= xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1073 *usable_protocols
&= usable
; /* Each line can narrow the set. */
1078 if (stream
!= stdin
) {
1084 char * OVS_WARN_UNUSED_RESULT
1085 parse_ofp_flow_stats_request_str(struct ofputil_flow_stats_request
*fsr
,
1086 bool aggregate
, const char *string
,
1087 enum ofputil_protocol
*usable_protocols
)
1089 struct ofputil_flow_mod fm
;
1092 error
= parse_ofp_str(&fm
, -1, string
, usable_protocols
);
1097 /* Special table ID support not required for stats requests. */
1098 if (*usable_protocols
& OFPUTIL_P_OF10_STD_TID
) {
1099 *usable_protocols
|= OFPUTIL_P_OF10_STD
;
1101 if (*usable_protocols
& OFPUTIL_P_OF10_NXM_TID
) {
1102 *usable_protocols
|= OFPUTIL_P_OF10_NXM
;
1105 fsr
->aggregate
= aggregate
;
1106 fsr
->cookie
= fm
.cookie
;
1107 fsr
->cookie_mask
= fm
.cookie_mask
;
1108 fsr
->match
= fm
.match
;
1109 fsr
->out_port
= fm
.out_port
;
1110 fsr
->out_group
= fm
.out_group
;
1111 fsr
->table_id
= fm
.table_id
;
1115 /* Parses a specification of a flow from 's' into 'flow'. 's' must take the
1116 * form FIELD=VALUE[,FIELD=VALUE]... where each FIELD is the name of a
1117 * mf_field. Fields must be specified in a natural order for satisfying
1118 * prerequisites. If 'mask' is specified, fills the mask field for each of the
1119 * field specified in flow. If the map, 'names_portno' is specfied, converts
1120 * the in_port name into port no while setting the 'flow'.
1122 * Returns NULL on success, otherwise a malloc()'d string that explains the
1125 parse_ofp_exact_flow(struct flow
*flow
, struct flow
*mask
, const char *s
,
1126 const struct simap
*portno_names
)
1128 char *pos
, *key
, *value_s
;
1132 memset(flow
, 0, sizeof *flow
);
1134 memset(mask
, 0, sizeof *mask
);
1137 pos
= copy
= xstrdup(s
);
1138 while (ofputil_parse_key_value(&pos
, &key
, &value_s
)) {
1139 const struct protocol
*p
;
1140 if (parse_protocol(key
, &p
)) {
1141 if (flow
->dl_type
) {
1142 error
= xasprintf("%s: Ethernet type set multiple times", s
);
1145 flow
->dl_type
= htons(p
->dl_type
);
1147 mask
->dl_type
= OVS_BE16_MAX
;
1151 if (flow
->nw_proto
) {
1152 error
= xasprintf("%s: network protocol set "
1153 "multiple times", s
);
1156 flow
->nw_proto
= p
->nw_proto
;
1158 mask
->nw_proto
= UINT8_MAX
;
1162 const struct mf_field
*mf
;
1163 union mf_value value
;
1166 mf
= mf_from_name(key
);
1168 error
= xasprintf("%s: unknown field %s", s
, key
);
1172 if (!mf_are_prereqs_ok(mf
, flow
)) {
1173 error
= xasprintf("%s: prerequisites not met for setting %s",
1178 if (mf_is_set(mf
, flow
)) {
1179 error
= xasprintf("%s: field %s set multiple times", s
, key
);
1183 if (!strcmp(key
, "in_port")
1185 && simap_contains(portno_names
, value_s
)) {
1186 flow
->in_port
.ofp_port
= u16_to_ofp(
1187 simap_get(portno_names
, value_s
));
1189 mask
->in_port
.ofp_port
= u16_to_ofp(ntohs(OVS_BE16_MAX
));
1192 field_error
= mf_parse_value(mf
, value_s
, &value
);
1194 error
= xasprintf("%s: bad value for %s (%s)",
1195 s
, key
, field_error
);
1200 mf_set_flow_value(mf
, &value
, flow
);
1202 mf_mask_field(mf
, mask
);
1208 if (!flow
->in_port
.ofp_port
) {
1209 flow
->in_port
.ofp_port
= OFPP_NONE
;
1216 memset(flow
, 0, sizeof *flow
);
1218 memset(mask
, 0, sizeof *mask
);
1224 static char * OVS_WARN_UNUSED_RESULT
1225 parse_bucket_str(struct ofputil_bucket
*bucket
, char *str_
, uint8_t group_type
,
1226 enum ofputil_protocol
*usable_protocols
)
1228 char *pos
, *key
, *value
;
1229 struct ofpbuf ofpacts
;
1233 bucket
->weight
= group_type
== OFPGT11_SELECT
? 1 : 0;
1234 bucket
->bucket_id
= OFPG15_BUCKET_ALL
;
1235 bucket
->watch_port
= OFPP_ANY
;
1236 bucket
->watch_group
= OFPG_ANY
;
1242 while (ofputil_parse_key_value(&pos
, &key
, &value
)) {
1243 if (!strcasecmp(key
, "weight")) {
1244 error
= str_to_u16(value
, "weight", &bucket
->weight
);
1245 } else if (!strcasecmp(key
, "watch_port")) {
1246 if (!ofputil_port_from_string(value
, &bucket
->watch_port
)
1247 || (ofp_to_u16(bucket
->watch_port
) >= ofp_to_u16(OFPP_MAX
)
1248 && bucket
->watch_port
!= OFPP_ANY
)) {
1249 error
= xasprintf("%s: invalid watch_port", value
);
1251 } else if (!strcasecmp(key
, "watch_group")) {
1252 error
= str_to_u32(value
, &bucket
->watch_group
);
1253 if (!error
&& bucket
->watch_group
> OFPG_MAX
) {
1254 error
= xasprintf("invalid watch_group id %"PRIu32
,
1255 bucket
->watch_group
);
1257 } else if (!strcasecmp(key
, "bucket_id")) {
1258 error
= str_to_u32(value
, &bucket
->bucket_id
);
1259 if (!error
&& bucket
->bucket_id
> OFPG15_BUCKET_MAX
) {
1260 error
= xasprintf("invalid bucket_id id %"PRIu32
,
1263 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1264 } else if (!strcasecmp(key
, "action") || !strcasecmp(key
, "actions")) {
1265 ds_put_format(&actions
, "%s,", value
);
1267 ds_put_format(&actions
, "%s(%s),", key
, value
);
1271 ds_destroy(&actions
);
1276 if (!actions
.length
) {
1277 return xstrdup("bucket must specify actions");
1279 ds_chomp(&actions
, ',');
1281 ofpbuf_init(&ofpacts
, 0);
1282 error
= ofpacts_parse_actions(ds_cstr(&actions
), &ofpacts
,
1284 ds_destroy(&actions
);
1286 ofpbuf_uninit(&ofpacts
);
1289 bucket
->ofpacts
= ofpacts
.data
;
1290 bucket
->ofpacts_len
= ofpacts
.size
;
1295 static char * OVS_WARN_UNUSED_RESULT
1296 parse_select_group_field(char *s
, struct field_array
*fa
,
1297 enum ofputil_protocol
*usable_protocols
)
1299 char *name
, *value_str
;
1301 while (ofputil_parse_key_value(&s
, &name
, &value_str
)) {
1302 const struct mf_field
*mf
= mf_from_name(name
);
1306 union mf_value value
;
1308 if (bitmap_is_set(fa
->used
.bm
, mf
->id
)) {
1309 return xasprintf("%s: duplicate field", name
);
1313 error
= mf_parse_value(mf
, value_str
, &value
);
1318 /* The mask cannot be all-zeros */
1319 if (!mf_is_tun_metadata(mf
) &&
1320 is_all_zeros(&value
, mf
->n_bytes
)) {
1321 return xasprintf("%s: values are wildcards here "
1322 "and must not be all-zeros", s
);
1325 /* The values parsed are masks for fields used
1326 * by the selection method */
1327 if (!mf_is_mask_valid(mf
, &value
)) {
1328 return xasprintf("%s: invalid mask for field %s",
1329 value_str
, mf
->name
);
1332 memset(&value
, 0xff, mf
->n_bytes
);
1335 field_array_set(mf
->id
, &value
, fa
);
1337 if (is_all_ones(&value
, mf
->n_bytes
)) {
1338 *usable_protocols
&= mf
->usable_protocols_exact
;
1339 } else if (mf
->usable_protocols_bitwise
== mf
->usable_protocols_cidr
1340 || ip_is_cidr(value
.be32
)) {
1341 *usable_protocols
&= mf
->usable_protocols_cidr
;
1343 *usable_protocols
&= mf
->usable_protocols_bitwise
;
1346 return xasprintf("%s: unknown field %s", s
, name
);
1353 static char * OVS_WARN_UNUSED_RESULT
1354 parse_ofp_group_mod_str__(struct ofputil_group_mod
*gm
, uint16_t command
,
1356 enum ofputil_protocol
*usable_protocols
)
1359 F_GROUP_TYPE
= 1 << 0,
1361 F_COMMAND_BUCKET_ID
= 1 << 2,
1362 F_COMMAND_BUCKET_ID_ALL
= 1 << 3,
1364 bool had_type
= false;
1365 bool had_command_bucket_id
= false;
1366 struct ofputil_bucket
*bucket
;
1369 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1373 fields
= F_GROUP_TYPE
| F_BUCKETS
;
1376 case OFPGC11_DELETE
:
1380 case OFPGC11_MODIFY
:
1381 fields
= F_GROUP_TYPE
| F_BUCKETS
;
1384 case OFPGC15_INSERT_BUCKET
:
1385 fields
= F_BUCKETS
| F_COMMAND_BUCKET_ID
;
1386 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1389 case OFPGC15_REMOVE_BUCKET
:
1390 fields
= F_COMMAND_BUCKET_ID
| F_COMMAND_BUCKET_ID_ALL
;
1391 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1398 memset(gm
, 0, sizeof *gm
);
1399 gm
->command
= command
;
1400 gm
->group_id
= OFPG_ANY
;
1401 gm
->command_bucket_id
= OFPG15_BUCKET_ALL
;
1402 list_init(&gm
->buckets
);
1403 if (command
== OFPGC11_DELETE
&& string
[0] == '\0') {
1404 gm
->group_id
= OFPG_ALL
;
1408 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1410 /* Strip the buckets off the end of 'string', if there are any, saving a
1411 * pointer for later. We want to parse the buckets last because the bucket
1412 * type influences bucket defaults. */
1413 char *bkt_str
= strstr(string
, "bucket=");
1415 if (!(fields
& F_BUCKETS
)) {
1416 error
= xstrdup("bucket is not needed");
1422 /* Parse everything before the buckets. */
1425 while (ofputil_parse_key_value(&pos
, &name
, &value
)) {
1426 if (!strcmp(name
, "command_bucket_id")) {
1427 if (!(fields
& F_COMMAND_BUCKET_ID
)) {
1428 error
= xstrdup("command bucket id is not needed");
1431 if (!strcmp(value
, "all")) {
1432 gm
->command_bucket_id
= OFPG15_BUCKET_ALL
;
1433 } else if (!strcmp(value
, "first")) {
1434 gm
->command_bucket_id
= OFPG15_BUCKET_FIRST
;
1435 } else if (!strcmp(value
, "last")) {
1436 gm
->command_bucket_id
= OFPG15_BUCKET_LAST
;
1438 error
= str_to_u32(value
, &gm
->command_bucket_id
);
1442 if (gm
->command_bucket_id
> OFPG15_BUCKET_MAX
1443 && (gm
->command_bucket_id
!= OFPG15_BUCKET_FIRST
1444 && gm
->command_bucket_id
!= OFPG15_BUCKET_LAST
1445 && gm
->command_bucket_id
!= OFPG15_BUCKET_ALL
)) {
1446 error
= xasprintf("invalid command bucket id %"PRIu32
,
1447 gm
->command_bucket_id
);
1451 if (gm
->command_bucket_id
== OFPG15_BUCKET_ALL
1452 && !(fields
& F_COMMAND_BUCKET_ID_ALL
)) {
1453 error
= xstrdup("command_bucket_id=all is not permitted");
1456 had_command_bucket_id
= true;
1457 } else if (!strcmp(name
, "group_id")) {
1458 if(!strcmp(value
, "all")) {
1459 gm
->group_id
= OFPG_ALL
;
1461 error
= str_to_u32(value
, &gm
->group_id
);
1465 if (gm
->group_id
!= OFPG_ALL
&& gm
->group_id
> OFPG_MAX
) {
1466 error
= xasprintf("invalid group id %"PRIu32
,
1471 } else if (!strcmp(name
, "type")){
1472 if (!(fields
& F_GROUP_TYPE
)) {
1473 error
= xstrdup("type is not needed");
1476 if (!strcmp(value
, "all")) {
1477 gm
->type
= OFPGT11_ALL
;
1478 } else if (!strcmp(value
, "select")) {
1479 gm
->type
= OFPGT11_SELECT
;
1480 } else if (!strcmp(value
, "indirect")) {
1481 gm
->type
= OFPGT11_INDIRECT
;
1482 } else if (!strcmp(value
, "ff") ||
1483 !strcmp(value
, "fast_failover")) {
1484 gm
->type
= OFPGT11_FF
;
1486 error
= xasprintf("invalid group type %s", value
);
1490 } else if (!strcmp(name
, "selection_method")) {
1491 if (!(fields
& F_GROUP_TYPE
)) {
1492 error
= xstrdup("selection method is not needed");
1495 if (strlen(value
) >= NTR_MAX_SELECTION_METHOD_LEN
) {
1496 error
= xasprintf("selection method is longer than %u"
1498 NTR_MAX_SELECTION_METHOD_LEN
- 1);
1501 memset(gm
->props
.selection_method
, '\0',
1502 NTR_MAX_SELECTION_METHOD_LEN
);
1503 strcpy(gm
->props
.selection_method
, value
);
1504 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1505 } else if (!strcmp(name
, "selection_method_param")) {
1506 if (!(fields
& F_GROUP_TYPE
)) {
1507 error
= xstrdup("selection method param is not needed");
1510 error
= str_to_u64(value
, &gm
->props
.selection_method_param
);
1514 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1515 } else if (!strcmp(name
, "fields")) {
1516 if (!(fields
& F_GROUP_TYPE
)) {
1517 error
= xstrdup("fields are not needed");
1520 error
= parse_select_group_field(value
, &gm
->props
.fields
,
1525 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1527 error
= xasprintf("unknown keyword %s", name
);
1531 if (gm
->group_id
== OFPG_ANY
) {
1532 error
= xstrdup("must specify a group_id");
1535 if (fields
& F_GROUP_TYPE
&& !had_type
) {
1536 error
= xstrdup("must specify a type");
1540 if (fields
& F_COMMAND_BUCKET_ID
) {
1541 if (!(fields
& F_COMMAND_BUCKET_ID_ALL
|| had_command_bucket_id
)) {
1542 error
= xstrdup("must specify a command bucket id");
1545 } else if (had_command_bucket_id
) {
1546 error
= xstrdup("command bucket id is not needed");
1550 /* Now parse the buckets, if any. */
1554 bkt_str
= strchr(bkt_str
+ 1, '=');
1556 error
= xstrdup("must specify bucket content");
1561 next_bkt_str
= strstr(bkt_str
, "bucket=");
1563 *next_bkt_str
= '\0';
1566 bucket
= xzalloc(sizeof(struct ofputil_bucket
));
1567 error
= parse_bucket_str(bucket
, bkt_str
, gm
->type
, usable_protocols
);
1572 list_push_back(&gm
->buckets
, &bucket
->list_node
);
1574 if (gm
->type
!= OFPGT11_SELECT
&& bucket
->weight
) {
1575 error
= xstrdup("Only select groups can have bucket weights.");
1579 bkt_str
= next_bkt_str
;
1581 if (gm
->type
== OFPGT11_INDIRECT
&& !list_is_short(&gm
->buckets
)) {
1582 error
= xstrdup("Indirect groups can have at most one bucket.");
1588 ofputil_bucket_list_destroy(&gm
->buckets
);
1592 char * OVS_WARN_UNUSED_RESULT
1593 parse_ofp_group_mod_str(struct ofputil_group_mod
*gm
, uint16_t command
,
1595 enum ofputil_protocol
*usable_protocols
)
1597 char *string
= xstrdup(str_
);
1598 char *error
= parse_ofp_group_mod_str__(gm
, command
, string
,
1603 ofputil_bucket_list_destroy(&gm
->buckets
);
1608 char * OVS_WARN_UNUSED_RESULT
1609 parse_ofp_group_mod_file(const char *file_name
, uint16_t command
,
1610 struct ofputil_group_mod
**gms
, size_t *n_gms
,
1611 enum ofputil_protocol
*usable_protocols
)
1613 size_t allocated_gms
;
1621 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1622 if (stream
== NULL
) {
1623 return xasprintf("%s: open failed (%s)",
1624 file_name
, ovs_strerror(errno
));
1627 allocated_gms
= *n_gms
;
1630 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1631 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1632 enum ofputil_protocol usable
;
1635 if (*n_gms
>= allocated_gms
) {
1636 struct ofputil_group_mod
*new_gms
;
1639 new_gms
= x2nrealloc(*gms
, &allocated_gms
, sizeof **gms
);
1640 for (i
= 0; i
< *n_gms
; i
++) {
1641 list_moved(&new_gms
[i
].buckets
, &(*gms
)[i
].buckets
);
1645 error
= parse_ofp_group_mod_str(&(*gms
)[*n_gms
], command
, ds_cstr(&s
),
1650 for (i
= 0; i
< *n_gms
; i
++) {
1651 ofputil_bucket_list_destroy(&(*gms
)[i
].buckets
);
1658 if (stream
!= stdin
) {
1662 return xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1664 *usable_protocols
&= usable
;
1669 if (stream
!= stdin
) {
1675 char * OVS_WARN_UNUSED_RESULT
1676 parse_ofp_tlv_table_mod_str(struct ofputil_tlv_table_mod
*ttm
,
1677 uint16_t command
, const char *s
,
1678 enum ofputil_protocol
*usable_protocols
)
1680 *usable_protocols
= OFPUTIL_P_NXM_OXM_ANY
;
1682 ttm
->command
= command
;
1683 list_init(&ttm
->mappings
);
1686 struct ofputil_tlv_map
*map
= xmalloc(sizeof *map
);
1693 list_push_back(&ttm
->mappings
, &map
->list_node
);
1695 if (!ovs_scan(s
, "{class=%"SCNi16
",type=%"SCNi8
",len=%"SCNi8
"}->tun_metadata%"SCNi16
"%n",
1696 &map
->option_class
, &map
->option_type
, &map
->option_len
,
1698 ofputil_uninit_tlv_table(&ttm
->mappings
);
1699 return xstrdup("invalid tlv mapping");