2 * Copyright (c) 2010, 2011, 2012, 2013, 2014, 2015 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 match_init_catchall(&fm
->match
);
336 fm
->priority
= OFP_DEFAULT_PRIORITY
;
337 fm
->cookie
= htonll(0);
338 fm
->cookie_mask
= htonll(0);
339 if (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
) {
340 /* For modify, by default, don't update the cookie. */
341 fm
->new_cookie
= OVS_BE64_MAX
;
343 fm
->new_cookie
= htonll(0);
345 fm
->modify_cookie
= false;
347 fm
->command
= command
;
348 fm
->idle_timeout
= OFP_FLOW_PERMANENT
;
349 fm
->hard_timeout
= OFP_FLOW_PERMANENT
;
350 fm
->buffer_id
= UINT32_MAX
;
351 fm
->out_port
= OFPP_ANY
;
354 fm
->out_group
= OFPG_ANY
;
355 fm
->delete_reason
= OFPRR_DELETE
;
356 if (fields
& F_ACTIONS
) {
357 act_str
= extract_actions(string
);
359 return xstrdup("must specify an action");
363 while (ofputil_parse_key_value(&string
, &name
, &value
)) {
364 const struct protocol
*p
;
367 if (parse_protocol(name
, &p
)) {
368 match_set_dl_type(&fm
->match
, htons(p
->dl_type
));
370 match_set_nw_proto(&fm
->match
, p
->nw_proto
);
372 } else if (fields
& F_FLAGS
&& !strcmp(name
, "send_flow_rem")) {
373 fm
->flags
|= OFPUTIL_FF_SEND_FLOW_REM
;
374 } else if (fields
& F_FLAGS
&& !strcmp(name
, "check_overlap")) {
375 fm
->flags
|= OFPUTIL_FF_CHECK_OVERLAP
;
376 } else if (fields
& F_FLAGS
&& !strcmp(name
, "reset_counts")) {
377 fm
->flags
|= OFPUTIL_FF_RESET_COUNTS
;
378 *usable_protocols
&= OFPUTIL_P_OF12_UP
;
379 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_packet_counts")) {
380 fm
->flags
|= OFPUTIL_FF_NO_PKT_COUNTS
;
381 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
382 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_byte_counts")) {
383 fm
->flags
|= OFPUTIL_FF_NO_BYT_COUNTS
;
384 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
385 } else if (!strcmp(name
, "no_readonly_table")
386 || !strcmp(name
, "allow_hidden_fields")) {
387 /* ignore these fields. */
388 } else if (mf_from_name(name
)) {
389 error
= parse_field(mf_from_name(name
), value
, &fm
->match
,
393 return xasprintf("field %s missing value", name
);
396 if (!strcmp(name
, "table")) {
397 error
= str_to_u8(value
, "table", &fm
->table_id
);
398 if (fm
->table_id
!= 0xff) {
399 *usable_protocols
&= OFPUTIL_P_TID
;
401 } else if (fields
& F_OUT_PORT
&& !strcmp(name
, "out_port")) {
402 if (!ofputil_port_from_string(value
, &fm
->out_port
)) {
403 error
= xasprintf("%s is not a valid OpenFlow port",
406 } else if (fields
& F_OUT_PORT
&& !strcmp(name
, "out_group")) {
407 *usable_protocols
&= OFPUTIL_P_OF11_UP
;
408 if (!ofputil_group_from_string(value
, &fm
->out_group
)) {
409 error
= xasprintf("%s is not a valid OpenFlow group",
412 } else if (fields
& F_PRIORITY
&& !strcmp(name
, "priority")) {
413 uint16_t priority
= 0;
415 error
= str_to_u16(value
, name
, &priority
);
416 fm
->priority
= priority
;
417 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "idle_timeout")) {
418 error
= str_to_u16(value
, name
, &fm
->idle_timeout
);
419 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "hard_timeout")) {
420 error
= str_to_u16(value
, name
, &fm
->hard_timeout
);
421 } else if (fields
& F_IMPORTANCE
&& !strcmp(name
, "importance")) {
422 error
= str_to_u16(value
, name
, &fm
->importance
);
423 } else if (!strcmp(name
, "cookie")) {
424 char *mask
= strchr(value
, '/');
427 /* A mask means we're searching for a cookie. */
428 if (command
== OFPFC_ADD
) {
429 return xstrdup("flow additions cannot use "
433 error
= str_to_be64(value
, &fm
->cookie
);
437 error
= str_to_be64(mask
+ 1, &fm
->cookie_mask
);
439 /* Matching of the cookie is only supported through NXM or
441 if (fm
->cookie_mask
!= htonll(0)) {
442 *usable_protocols
&= OFPUTIL_P_NXM_OF11_UP
;
445 /* No mask means that the cookie is being set. */
446 if (command
!= OFPFC_ADD
&& command
!= OFPFC_MODIFY
447 && command
!= OFPFC_MODIFY_STRICT
) {
448 return xstrdup("cannot set cookie");
450 error
= str_to_be64(value
, &fm
->new_cookie
);
451 fm
->modify_cookie
= true;
453 } else if (!strcmp(name
, "duration")
454 || !strcmp(name
, "n_packets")
455 || !strcmp(name
, "n_bytes")
456 || !strcmp(name
, "idle_age")
457 || !strcmp(name
, "hard_age")) {
458 /* Ignore these, so that users can feed the output of
459 * "ovs-ofctl dump-flows" back into commands that parse
462 error
= xasprintf("unknown keyword %s", name
);
470 /* Check for usable protocol interdependencies between match fields. */
471 if (fm
->match
.flow
.dl_type
== htons(ETH_TYPE_IPV6
)) {
472 const struct flow_wildcards
*wc
= &fm
->match
.wc
;
473 /* Only NXM and OXM support matching L3 and L4 fields within IPv6.
475 * (IPv6 specific fields as well as arp_sha, arp_tha, nw_frag, and
476 * nw_ttl are covered elsewhere so they don't need to be included in
479 if (wc
->masks
.nw_proto
|| wc
->masks
.nw_tos
480 || wc
->masks
.tp_src
|| wc
->masks
.tp_dst
) {
481 *usable_protocols
&= OFPUTIL_P_NXM_OXM_ANY
;
484 if (!fm
->cookie_mask
&& fm
->new_cookie
== OVS_BE64_MAX
485 && (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
)) {
486 /* On modifies without a mask, we are supposed to add a flow if
487 * one does not exist. If a cookie wasn't been specified, use a
488 * default of zero. */
489 fm
->new_cookie
= htonll(0);
491 if (fields
& F_ACTIONS
) {
492 enum ofputil_protocol action_usable_protocols
;
493 struct ofpbuf ofpacts
;
496 ofpbuf_init(&ofpacts
, 32);
497 error
= ofpacts_parse_instructions(act_str
, &ofpacts
,
498 &action_usable_protocols
);
499 *usable_protocols
&= action_usable_protocols
;
503 err
= ofpacts_check(ofpacts
.data
, ofpacts
.size
, &fm
->match
.flow
,
504 OFPP_MAX
, fm
->table_id
, 255, usable_protocols
);
505 if (!err
&& !*usable_protocols
) {
506 err
= OFPERR_OFPBAC_MATCH_INCONSISTENT
;
509 error
= xasprintf("actions are invalid with specified match "
510 "(%s)", ofperr_to_string(err
));
515 ofpbuf_uninit(&ofpacts
);
519 fm
->ofpacts_len
= ofpacts
.size
;
520 fm
->ofpacts
= ofpbuf_steal_data(&ofpacts
);
529 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
530 * page) into 'fm' for sending the specified flow_mod 'command' to a switch.
531 * Returns the set of usable protocols in '*usable_protocols'.
533 * To parse syntax for an OFPT_FLOW_MOD (or NXT_FLOW_MOD), use an OFPFC_*
534 * constant for 'command'. To parse syntax for an OFPST_FLOW or
535 * OFPST_AGGREGATE (or NXST_FLOW or NXST_AGGREGATE), use -1 for 'command'.
537 * If 'command' is given as -2, 'str_' may begin with a command name ("add",
538 * "modify", "delete", "modify_strict", or "delete_strict"). A missing command
539 * name is treated as "add".
541 * Returns NULL if successful, otherwise a malloc()'d string describing the
542 * error. The caller is responsible for freeing the returned string. */
543 char * OVS_WARN_UNUSED_RESULT
544 parse_ofp_str(struct ofputil_flow_mod
*fm
, int command
, const char *str_
,
545 enum ofputil_protocol
*usable_protocols
)
547 char *string
= xstrdup(str_
);
550 error
= parse_ofp_str__(fm
, command
, string
, usable_protocols
);
560 static char * OVS_WARN_UNUSED_RESULT
561 parse_ofp_meter_mod_str__(struct ofputil_meter_mod
*mm
, char *string
,
562 struct ofpbuf
*bands
, int command
,
563 enum ofputil_protocol
*usable_protocols
)
570 char *save_ptr
= NULL
;
571 char *band_str
= NULL
;
574 /* Meters require at least OF 1.3. */
575 *usable_protocols
= OFPUTIL_P_OF13_UP
;
583 fields
= F_METER
| F_FLAGS
| F_BANDS
;
591 fields
= F_METER
| F_FLAGS
| F_BANDS
;
598 mm
->command
= command
;
599 mm
->meter
.meter_id
= 0;
601 if (fields
& F_BANDS
) {
602 band_str
= strstr(string
, "band");
604 return xstrdup("must specify bands");
608 band_str
= strchr(band_str
+ 1, '=');
610 return xstrdup("must specify bands");
615 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
616 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
618 if (fields
& F_FLAGS
&& !strcmp(name
, "kbps")) {
619 mm
->meter
.flags
|= OFPMF13_KBPS
;
620 } else if (fields
& F_FLAGS
&& !strcmp(name
, "pktps")) {
621 mm
->meter
.flags
|= OFPMF13_PKTPS
;
622 } else if (fields
& F_FLAGS
&& !strcmp(name
, "burst")) {
623 mm
->meter
.flags
|= OFPMF13_BURST
;
624 } else if (fields
& F_FLAGS
&& !strcmp(name
, "stats")) {
625 mm
->meter
.flags
|= OFPMF13_STATS
;
629 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
631 return xasprintf("field %s missing value", name
);
634 if (!strcmp(name
, "meter")) {
635 if (!strcmp(value
, "all")) {
636 mm
->meter
.meter_id
= OFPM13_ALL
;
637 } else if (!strcmp(value
, "controller")) {
638 mm
->meter
.meter_id
= OFPM13_CONTROLLER
;
639 } else if (!strcmp(value
, "slowpath")) {
640 mm
->meter
.meter_id
= OFPM13_SLOWPATH
;
642 char *error
= str_to_u32(value
, &mm
->meter
.meter_id
);
646 if (mm
->meter
.meter_id
> OFPM13_MAX
647 || !mm
->meter
.meter_id
) {
648 return xasprintf("invalid value for %s", name
);
652 return xasprintf("unknown keyword %s", name
);
656 if (fields
& F_METER
&& !mm
->meter
.meter_id
) {
657 return xstrdup("must specify 'meter'");
659 if (fields
& F_FLAGS
&& !mm
->meter
.flags
) {
660 return xstrdup("meter must specify either 'kbps' or 'pktps'");
663 if (fields
& F_BANDS
) {
664 uint16_t n_bands
= 0;
665 struct ofputil_meter_band
*band
= NULL
;
668 for (name
= strtok_r(band_str
, "=, \t\r\n", &save_ptr
); name
;
669 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
673 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
675 return xasprintf("field %s missing value", name
);
678 if (!strcmp(name
, "type")) {
679 /* Start a new band */
680 band
= ofpbuf_put_zeros(bands
, sizeof *band
);
683 if (!strcmp(value
, "drop")) {
684 band
->type
= OFPMBT13_DROP
;
685 } else if (!strcmp(value
, "dscp_remark")) {
686 band
->type
= OFPMBT13_DSCP_REMARK
;
688 return xasprintf("field %s unknown value %s", name
, value
);
690 } else if (!band
|| !band
->type
) {
691 return xstrdup("band must start with the 'type' keyword");
692 } else if (!strcmp(name
, "rate")) {
693 char *error
= str_to_u32(value
, &band
->rate
);
697 } else if (!strcmp(name
, "burst_size")) {
698 char *error
= str_to_u32(value
, &band
->burst_size
);
702 } else if (!strcmp(name
, "prec_level")) {
703 char *error
= str_to_u8(value
, name
, &band
->prec_level
);
708 return xasprintf("unknown keyword %s", name
);
713 return xstrdup("meter must have bands");
716 mm
->meter
.n_bands
= n_bands
;
717 mm
->meter
.bands
= ofpbuf_steal_data(bands
);
719 for (i
= 0; i
< n_bands
; ++i
) {
720 band
= &mm
->meter
.bands
[i
];
723 return xstrdup("band must have 'type'");
725 if (band
->type
== OFPMBT13_DSCP_REMARK
) {
726 if (!band
->prec_level
) {
727 return xstrdup("'dscp_remark' band must have"
731 if (band
->prec_level
) {
732 return xstrdup("Only 'dscp_remark' band may have"
737 return xstrdup("band must have 'rate'");
739 if (mm
->meter
.flags
& OFPMF13_BURST
) {
740 if (!band
->burst_size
) {
741 return xstrdup("band must have 'burst_size' "
742 "when 'burst' flag is set");
745 if (band
->burst_size
) {
746 return xstrdup("band may have 'burst_size' only "
747 "when 'burst' flag is set");
752 mm
->meter
.n_bands
= 0;
753 mm
->meter
.bands
= NULL
;
759 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
760 * page) into 'mm' for sending the specified meter_mod 'command' to a switch.
762 * Returns NULL if successful, otherwise a malloc()'d string describing the
763 * error. The caller is responsible for freeing the returned string. */
764 char * OVS_WARN_UNUSED_RESULT
765 parse_ofp_meter_mod_str(struct ofputil_meter_mod
*mm
, const char *str_
,
766 int command
, enum ofputil_protocol
*usable_protocols
)
772 ofpbuf_init(&bands
, 64);
773 string
= xstrdup(str_
);
775 error
= parse_ofp_meter_mod_str__(mm
, string
, &bands
, command
,
779 ofpbuf_uninit(&bands
);
784 static char * OVS_WARN_UNUSED_RESULT
785 parse_flow_monitor_request__(struct ofputil_flow_monitor_request
*fmr
,
786 const char *str_
, char *string
,
787 enum ofputil_protocol
*usable_protocols
)
789 static atomic_count id
= ATOMIC_COUNT_INIT(0);
792 fmr
->id
= atomic_count_inc(&id
);
794 fmr
->flags
= (NXFMF_INITIAL
| NXFMF_ADD
| NXFMF_DELETE
| NXFMF_MODIFY
795 | NXFMF_OWN
| NXFMF_ACTIONS
);
796 fmr
->out_port
= OFPP_NONE
;
797 fmr
->table_id
= 0xff;
798 match_init_catchall(&fmr
->match
);
800 while (ofputil_parse_key_value(&string
, &name
, &value
)) {
801 const struct protocol
*p
;
804 if (!strcmp(name
, "!initial")) {
805 fmr
->flags
&= ~NXFMF_INITIAL
;
806 } else if (!strcmp(name
, "!add")) {
807 fmr
->flags
&= ~NXFMF_ADD
;
808 } else if (!strcmp(name
, "!delete")) {
809 fmr
->flags
&= ~NXFMF_DELETE
;
810 } else if (!strcmp(name
, "!modify")) {
811 fmr
->flags
&= ~NXFMF_MODIFY
;
812 } else if (!strcmp(name
, "!actions")) {
813 fmr
->flags
&= ~NXFMF_ACTIONS
;
814 } else if (!strcmp(name
, "!own")) {
815 fmr
->flags
&= ~NXFMF_OWN
;
816 } else if (parse_protocol(name
, &p
)) {
817 match_set_dl_type(&fmr
->match
, htons(p
->dl_type
));
819 match_set_nw_proto(&fmr
->match
, p
->nw_proto
);
821 } else if (mf_from_name(name
)) {
822 error
= parse_field(mf_from_name(name
), value
, &fmr
->match
,
826 return xasprintf("%s: field %s missing value", str_
, name
);
829 if (!strcmp(name
, "table")) {
830 error
= str_to_u8(value
, "table", &fmr
->table_id
);
831 } else if (!strcmp(name
, "out_port")) {
832 fmr
->out_port
= u16_to_ofp(atoi(value
));
834 return xasprintf("%s: unknown keyword %s", str_
, name
);
845 /* Convert 'str_' (as described in the documentation for the "monitor" command
846 * in the ovs-ofctl man page) into 'fmr'.
848 * Returns NULL if successful, otherwise a malloc()'d string describing the
849 * error. The caller is responsible for freeing the returned string. */
850 char * OVS_WARN_UNUSED_RESULT
851 parse_flow_monitor_request(struct ofputil_flow_monitor_request
*fmr
,
853 enum ofputil_protocol
*usable_protocols
)
855 char *string
= xstrdup(str_
);
856 char *error
= parse_flow_monitor_request__(fmr
, str_
, string
,
862 /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command'
863 * (one of OFPFC_*) into 'fm'.
865 * If 'command' is given as -2, 'string' may begin with a command name ("add",
866 * "modify", "delete", "modify_strict", or "delete_strict"). A missing command
867 * name is treated as "add".
869 * Returns NULL if successful, otherwise a malloc()'d string describing the
870 * error. The caller is responsible for freeing the returned string. */
871 char * OVS_WARN_UNUSED_RESULT
872 parse_ofp_flow_mod_str(struct ofputil_flow_mod
*fm
, const char *string
,
874 enum ofputil_protocol
*usable_protocols
)
876 char *error
= parse_ofp_str(fm
, command
, string
, usable_protocols
);
879 /* Normalize a copy of the match. This ensures that non-normalized
880 * flows get logged but doesn't affect what gets sent to the switch, so
881 * that the switch can do whatever it likes with the flow. */
882 struct match match_copy
= fm
->match
;
883 ofputil_normalize_match(&match_copy
);
889 /* Convert 'setting' (as described for the "mod-table" command
890 * in ovs-ofctl man page) into 'tm->table_vacancy->vacancy_up' and
891 * 'tm->table_vacancy->vacancy_down' threshold values.
892 * For the two threshold values, value of vacancy_up is always greater
893 * than value of vacancy_down.
895 * Returns NULL if successful, otherwise a malloc()'d string describing the
896 * error. The caller is responsible for freeing the returned string. */
897 char * OVS_WARN_UNUSED_RESULT
898 parse_ofp_table_vacancy(struct ofputil_table_mod
*tm
, const char *setting
)
900 char *save_ptr
= NULL
;
901 char *vac_up
, *vac_down
;
902 char *value
= strdup(setting
);
903 int vacancy_up
, vacancy_down
;
905 strtok_r(value
, ":", &save_ptr
);
906 vac_down
= strtok_r(NULL
, ",", &save_ptr
);
908 return xasprintf("Vacancy down value missing");
910 if (!str_to_int(vac_down
, 0, &vacancy_down
) ||
911 vacancy_down
< 0 || vacancy_down
> 100) {
912 return xasprintf("Invalid vacancy down value \"%s\"", vac_down
);
914 vac_up
= strtok_r(NULL
, ",", &save_ptr
);
916 return xasprintf("Vacancy up value missing");
918 if (!str_to_int(vac_up
, 0, &vacancy_up
) ||
919 vacancy_up
< 0 || vacancy_up
> 100) {
920 return xasprintf("Invalid vacancy up value \"%s\"", vac_up
);
922 if (vacancy_down
> vacancy_up
) {
923 return xasprintf("Invalid vacancy range, vacancy up should be greater"
924 " than vacancy down ""(%s)",
925 ofperr_to_string(OFPERR_OFPBPC_BAD_VALUE
));
927 tm
->table_vacancy
.vacancy_down
= vacancy_down
;
928 tm
->table_vacancy
.vacancy_up
= vacancy_up
;
932 /* Convert 'table_id' and 'setting' (as described for the "mod-table" command
933 * in the ovs-ofctl man page) into 'tm' for sending a table_mod command to a
936 * Stores a bitmap of the OpenFlow versions that are usable for 'tm' into
937 * '*usable_versions'.
939 * Returns NULL if successful, otherwise a malloc()'d string describing the
940 * error. The caller is responsible for freeing the returned string. */
941 char * OVS_WARN_UNUSED_RESULT
942 parse_ofp_table_mod(struct ofputil_table_mod
*tm
, const char *table_id
,
943 const char *setting
, uint32_t *usable_versions
)
945 *usable_versions
= 0;
946 if (!strcasecmp(table_id
, "all")) {
947 tm
->table_id
= OFPTT_ALL
;
949 char *error
= str_to_u8(table_id
, "table_id", &tm
->table_id
);
955 tm
->miss
= OFPUTIL_TABLE_MISS_DEFAULT
;
956 tm
->eviction
= OFPUTIL_TABLE_EVICTION_DEFAULT
;
957 tm
->eviction_flags
= UINT32_MAX
;
958 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_DEFAULT
;
959 tm
->table_vacancy
.vacancy_down
= 0;
960 tm
->table_vacancy
.vacancy_up
= 0;
961 tm
->table_vacancy
.vacancy
= 0;
962 /* Only OpenFlow 1.1 and 1.2 can configure table-miss via table_mod.
963 * Only OpenFlow 1.4+ can configure eviction and vacancy events
966 if (!strcmp(setting
, "controller")) {
967 tm
->miss
= OFPUTIL_TABLE_MISS_CONTROLLER
;
968 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
969 } else if (!strcmp(setting
, "continue")) {
970 tm
->miss
= OFPUTIL_TABLE_MISS_CONTINUE
;
971 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
972 } else if (!strcmp(setting
, "drop")) {
973 tm
->miss
= OFPUTIL_TABLE_MISS_DROP
;
974 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
975 } else if (!strcmp(setting
, "evict")) {
976 tm
->eviction
= OFPUTIL_TABLE_EVICTION_ON
;
977 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
978 } else if (!strcmp(setting
, "noevict")) {
979 tm
->eviction
= OFPUTIL_TABLE_EVICTION_OFF
;
980 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
981 } else if (!strncmp(setting
, "vacancy", strcspn(setting
, ":"))) {
982 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_ON
;
983 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
984 char *error
= parse_ofp_table_vacancy(tm
, setting
);
988 } else if (!strcmp(setting
, "novacancy")) {
989 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_OFF
;
990 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
992 return xasprintf("invalid table_mod setting %s", setting
);
995 if (tm
->table_id
== 0xfe
996 && tm
->miss
== OFPUTIL_TABLE_MISS_CONTINUE
) {
997 return xstrdup("last table's flow miss handling can not be continue");
1004 /* Opens file 'file_name' and reads each line as a flow_mod of the specified
1005 * type (one of OFPFC_*). Stores each flow_mod in '*fm', an array allocated
1006 * on the caller's behalf, and the number of flow_mods in '*n_fms'.
1008 * If 'command' is given as -2, each line may start with a command name
1009 * ("add", "modify", "delete", "modify_strict", or "delete_strict"). A missing
1010 * command name is treated as "add".
1012 * Returns NULL if successful, otherwise a malloc()'d string describing the
1013 * error. The caller is responsible for freeing the returned string. */
1014 char * OVS_WARN_UNUSED_RESULT
1015 parse_ofp_flow_mod_file(const char *file_name
, int command
,
1016 struct ofputil_flow_mod
**fms
, size_t *n_fms
,
1017 enum ofputil_protocol
*usable_protocols
)
1019 size_t allocated_fms
;
1024 *usable_protocols
= OFPUTIL_P_ANY
;
1029 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1030 if (stream
== NULL
) {
1031 return xasprintf("%s: open failed (%s)",
1032 file_name
, ovs_strerror(errno
));
1035 allocated_fms
= *n_fms
;
1038 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1040 enum ofputil_protocol usable
;
1042 if (*n_fms
>= allocated_fms
) {
1043 *fms
= x2nrealloc(*fms
, &allocated_fms
, sizeof **fms
);
1045 error
= parse_ofp_flow_mod_str(&(*fms
)[*n_fms
], ds_cstr(&s
), command
,
1050 for (i
= 0; i
< *n_fms
; i
++) {
1051 free(CONST_CAST(struct ofpact
*, (*fms
)[i
].ofpacts
));
1058 if (stream
!= stdin
) {
1062 return xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1064 *usable_protocols
&= usable
; /* Each line can narrow the set. */
1069 if (stream
!= stdin
) {
1075 char * OVS_WARN_UNUSED_RESULT
1076 parse_ofp_flow_stats_request_str(struct ofputil_flow_stats_request
*fsr
,
1077 bool aggregate
, const char *string
,
1078 enum ofputil_protocol
*usable_protocols
)
1080 struct ofputil_flow_mod fm
;
1083 error
= parse_ofp_str(&fm
, -1, string
, usable_protocols
);
1088 /* Special table ID support not required for stats requests. */
1089 if (*usable_protocols
& OFPUTIL_P_OF10_STD_TID
) {
1090 *usable_protocols
|= OFPUTIL_P_OF10_STD
;
1092 if (*usable_protocols
& OFPUTIL_P_OF10_NXM_TID
) {
1093 *usable_protocols
|= OFPUTIL_P_OF10_NXM
;
1096 fsr
->aggregate
= aggregate
;
1097 fsr
->cookie
= fm
.cookie
;
1098 fsr
->cookie_mask
= fm
.cookie_mask
;
1099 fsr
->match
= fm
.match
;
1100 fsr
->out_port
= fm
.out_port
;
1101 fsr
->out_group
= fm
.out_group
;
1102 fsr
->table_id
= fm
.table_id
;
1106 /* Parses a specification of a flow from 's' into 'flow'. 's' must take the
1107 * form FIELD=VALUE[,FIELD=VALUE]... where each FIELD is the name of a
1108 * mf_field. Fields must be specified in a natural order for satisfying
1109 * prerequisites. If 'mask' is specified, fills the mask field for each of the
1110 * field specified in flow. If the map, 'names_portno' is specfied, converts
1111 * the in_port name into port no while setting the 'flow'.
1113 * Returns NULL on success, otherwise a malloc()'d string that explains the
1116 parse_ofp_exact_flow(struct flow
*flow
, struct flow
*mask
, const char *s
,
1117 const struct simap
*portno_names
)
1119 char *pos
, *key
, *value_s
;
1123 memset(flow
, 0, sizeof *flow
);
1125 memset(mask
, 0, sizeof *mask
);
1128 pos
= copy
= xstrdup(s
);
1129 while (ofputil_parse_key_value(&pos
, &key
, &value_s
)) {
1130 const struct protocol
*p
;
1131 if (parse_protocol(key
, &p
)) {
1132 if (flow
->dl_type
) {
1133 error
= xasprintf("%s: Ethernet type set multiple times", s
);
1136 flow
->dl_type
= htons(p
->dl_type
);
1138 mask
->dl_type
= OVS_BE16_MAX
;
1142 if (flow
->nw_proto
) {
1143 error
= xasprintf("%s: network protocol set "
1144 "multiple times", s
);
1147 flow
->nw_proto
= p
->nw_proto
;
1149 mask
->nw_proto
= UINT8_MAX
;
1153 const struct mf_field
*mf
;
1154 union mf_value value
;
1157 mf
= mf_from_name(key
);
1159 error
= xasprintf("%s: unknown field %s", s
, key
);
1163 if (!mf_are_prereqs_ok(mf
, flow
)) {
1164 error
= xasprintf("%s: prerequisites not met for setting %s",
1169 if (mf_is_set(mf
, flow
)) {
1170 error
= xasprintf("%s: field %s set multiple times", s
, key
);
1174 if (!strcmp(key
, "in_port")
1176 && simap_contains(portno_names
, value_s
)) {
1177 flow
->in_port
.ofp_port
= u16_to_ofp(
1178 simap_get(portno_names
, value_s
));
1180 mask
->in_port
.ofp_port
= u16_to_ofp(ntohs(OVS_BE16_MAX
));
1183 field_error
= mf_parse_value(mf
, value_s
, &value
);
1185 error
= xasprintf("%s: bad value for %s (%s)",
1186 s
, key
, field_error
);
1191 mf_set_flow_value(mf
, &value
, flow
);
1193 mf_mask_field(mf
, mask
);
1199 if (!flow
->in_port
.ofp_port
) {
1200 flow
->in_port
.ofp_port
= OFPP_NONE
;
1207 memset(flow
, 0, sizeof *flow
);
1209 memset(mask
, 0, sizeof *mask
);
1215 static char * OVS_WARN_UNUSED_RESULT
1216 parse_bucket_str(struct ofputil_bucket
*bucket
, char *str_
, uint8_t group_type
,
1217 enum ofputil_protocol
*usable_protocols
)
1219 char *pos
, *key
, *value
;
1220 struct ofpbuf ofpacts
;
1224 bucket
->weight
= group_type
== OFPGT11_SELECT
? 1 : 0;
1225 bucket
->bucket_id
= OFPG15_BUCKET_ALL
;
1226 bucket
->watch_port
= OFPP_ANY
;
1227 bucket
->watch_group
= OFPG_ANY
;
1233 while (ofputil_parse_key_value(&pos
, &key
, &value
)) {
1234 if (!strcasecmp(key
, "weight")) {
1235 error
= str_to_u16(value
, "weight", &bucket
->weight
);
1236 } else if (!strcasecmp(key
, "watch_port")) {
1237 if (!ofputil_port_from_string(value
, &bucket
->watch_port
)
1238 || (ofp_to_u16(bucket
->watch_port
) >= ofp_to_u16(OFPP_MAX
)
1239 && bucket
->watch_port
!= OFPP_ANY
)) {
1240 error
= xasprintf("%s: invalid watch_port", value
);
1242 } else if (!strcasecmp(key
, "watch_group")) {
1243 error
= str_to_u32(value
, &bucket
->watch_group
);
1244 if (!error
&& bucket
->watch_group
> OFPG_MAX
) {
1245 error
= xasprintf("invalid watch_group id %"PRIu32
,
1246 bucket
->watch_group
);
1248 } else if (!strcasecmp(key
, "bucket_id")) {
1249 error
= str_to_u32(value
, &bucket
->bucket_id
);
1250 if (!error
&& bucket
->bucket_id
> OFPG15_BUCKET_MAX
) {
1251 error
= xasprintf("invalid bucket_id id %"PRIu32
,
1254 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1255 } else if (!strcasecmp(key
, "action") || !strcasecmp(key
, "actions")) {
1256 ds_put_format(&actions
, "%s,", value
);
1258 ds_put_format(&actions
, "%s(%s),", key
, value
);
1262 ds_destroy(&actions
);
1267 if (!actions
.length
) {
1268 return xstrdup("bucket must specify actions");
1270 ds_chomp(&actions
, ',');
1272 ofpbuf_init(&ofpacts
, 0);
1273 error
= ofpacts_parse_actions(ds_cstr(&actions
), &ofpacts
,
1275 ds_destroy(&actions
);
1277 ofpbuf_uninit(&ofpacts
);
1280 bucket
->ofpacts
= ofpacts
.data
;
1281 bucket
->ofpacts_len
= ofpacts
.size
;
1286 static char * OVS_WARN_UNUSED_RESULT
1287 parse_select_group_field(char *s
, struct field_array
*fa
,
1288 enum ofputil_protocol
*usable_protocols
)
1290 char *name
, *value_str
;
1292 while (ofputil_parse_key_value(&s
, &name
, &value_str
)) {
1293 const struct mf_field
*mf
= mf_from_name(name
);
1297 union mf_value value
;
1299 if (bitmap_is_set(fa
->used
.bm
, mf
->id
)) {
1300 return xasprintf("%s: duplicate field", name
);
1304 error
= mf_parse_value(mf
, value_str
, &value
);
1309 /* The mask cannot be all-zeros */
1310 if (!mf_is_tun_metadata(mf
) &&
1311 is_all_zeros(&value
, mf
->n_bytes
)) {
1312 return xasprintf("%s: values are wildcards here "
1313 "and must not be all-zeros", s
);
1316 /* The values parsed are masks for fields used
1317 * by the selection method */
1318 if (!mf_is_mask_valid(mf
, &value
)) {
1319 return xasprintf("%s: invalid mask for field %s",
1320 value_str
, mf
->name
);
1323 memset(&value
, 0xff, mf
->n_bytes
);
1326 field_array_set(mf
->id
, &value
, fa
);
1328 if (is_all_ones(&value
, mf
->n_bytes
)) {
1329 *usable_protocols
&= mf
->usable_protocols_exact
;
1330 } else if (mf
->usable_protocols_bitwise
== mf
->usable_protocols_cidr
1331 || ip_is_cidr(value
.be32
)) {
1332 *usable_protocols
&= mf
->usable_protocols_cidr
;
1334 *usable_protocols
&= mf
->usable_protocols_bitwise
;
1337 return xasprintf("%s: unknown field %s", s
, name
);
1344 static char * OVS_WARN_UNUSED_RESULT
1345 parse_ofp_group_mod_str__(struct ofputil_group_mod
*gm
, uint16_t command
,
1347 enum ofputil_protocol
*usable_protocols
)
1350 F_GROUP_TYPE
= 1 << 0,
1352 F_COMMAND_BUCKET_ID
= 1 << 2,
1353 F_COMMAND_BUCKET_ID_ALL
= 1 << 3,
1355 bool had_type
= false;
1356 bool had_command_bucket_id
= false;
1357 struct ofputil_bucket
*bucket
;
1360 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1364 fields
= F_GROUP_TYPE
| F_BUCKETS
;
1367 case OFPGC11_DELETE
:
1371 case OFPGC11_MODIFY
:
1372 fields
= F_GROUP_TYPE
| F_BUCKETS
;
1375 case OFPGC15_INSERT_BUCKET
:
1376 fields
= F_BUCKETS
| F_COMMAND_BUCKET_ID
;
1377 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1380 case OFPGC15_REMOVE_BUCKET
:
1381 fields
= F_COMMAND_BUCKET_ID
| F_COMMAND_BUCKET_ID_ALL
;
1382 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1389 memset(gm
, 0, sizeof *gm
);
1390 gm
->command
= command
;
1391 gm
->group_id
= OFPG_ANY
;
1392 gm
->command_bucket_id
= OFPG15_BUCKET_ALL
;
1393 list_init(&gm
->buckets
);
1394 if (command
== OFPGC11_DELETE
&& string
[0] == '\0') {
1395 gm
->group_id
= OFPG_ALL
;
1399 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1401 /* Strip the buckets off the end of 'string', if there are any, saving a
1402 * pointer for later. We want to parse the buckets last because the bucket
1403 * type influences bucket defaults. */
1404 char *bkt_str
= strstr(string
, "bucket=");
1406 if (!(fields
& F_BUCKETS
)) {
1407 error
= xstrdup("bucket is not needed");
1413 /* Parse everything before the buckets. */
1416 while (ofputil_parse_key_value(&pos
, &name
, &value
)) {
1417 if (!strcmp(name
, "command_bucket_id")) {
1418 if (!(fields
& F_COMMAND_BUCKET_ID
)) {
1419 error
= xstrdup("command bucket id is not needed");
1422 if (!strcmp(value
, "all")) {
1423 gm
->command_bucket_id
= OFPG15_BUCKET_ALL
;
1424 } else if (!strcmp(value
, "first")) {
1425 gm
->command_bucket_id
= OFPG15_BUCKET_FIRST
;
1426 } else if (!strcmp(value
, "last")) {
1427 gm
->command_bucket_id
= OFPG15_BUCKET_LAST
;
1429 error
= str_to_u32(value
, &gm
->command_bucket_id
);
1433 if (gm
->command_bucket_id
> OFPG15_BUCKET_MAX
1434 && (gm
->command_bucket_id
!= OFPG15_BUCKET_FIRST
1435 && gm
->command_bucket_id
!= OFPG15_BUCKET_LAST
1436 && gm
->command_bucket_id
!= OFPG15_BUCKET_ALL
)) {
1437 error
= xasprintf("invalid command bucket id %"PRIu32
,
1438 gm
->command_bucket_id
);
1442 if (gm
->command_bucket_id
== OFPG15_BUCKET_ALL
1443 && !(fields
& F_COMMAND_BUCKET_ID_ALL
)) {
1444 error
= xstrdup("command_bucket_id=all is not permitted");
1447 had_command_bucket_id
= true;
1448 } else if (!strcmp(name
, "group_id")) {
1449 if(!strcmp(value
, "all")) {
1450 gm
->group_id
= OFPG_ALL
;
1452 error
= str_to_u32(value
, &gm
->group_id
);
1456 if (gm
->group_id
!= OFPG_ALL
&& gm
->group_id
> OFPG_MAX
) {
1457 error
= xasprintf("invalid group id %"PRIu32
,
1462 } else if (!strcmp(name
, "type")){
1463 if (!(fields
& F_GROUP_TYPE
)) {
1464 error
= xstrdup("type is not needed");
1467 if (!strcmp(value
, "all")) {
1468 gm
->type
= OFPGT11_ALL
;
1469 } else if (!strcmp(value
, "select")) {
1470 gm
->type
= OFPGT11_SELECT
;
1471 } else if (!strcmp(value
, "indirect")) {
1472 gm
->type
= OFPGT11_INDIRECT
;
1473 } else if (!strcmp(value
, "ff") ||
1474 !strcmp(value
, "fast_failover")) {
1475 gm
->type
= OFPGT11_FF
;
1477 error
= xasprintf("invalid group type %s", value
);
1481 } else if (!strcmp(name
, "selection_method")) {
1482 if (!(fields
& F_GROUP_TYPE
)) {
1483 error
= xstrdup("selection method is not needed");
1486 if (strlen(value
) >= NTR_MAX_SELECTION_METHOD_LEN
) {
1487 error
= xasprintf("selection method is longer than %u"
1489 NTR_MAX_SELECTION_METHOD_LEN
- 1);
1492 memset(gm
->props
.selection_method
, '\0',
1493 NTR_MAX_SELECTION_METHOD_LEN
);
1494 strcpy(gm
->props
.selection_method
, value
);
1495 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1496 } else if (!strcmp(name
, "selection_method_param")) {
1497 if (!(fields
& F_GROUP_TYPE
)) {
1498 error
= xstrdup("selection method param is not needed");
1501 error
= str_to_u64(value
, &gm
->props
.selection_method_param
);
1505 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1506 } else if (!strcmp(name
, "fields")) {
1507 if (!(fields
& F_GROUP_TYPE
)) {
1508 error
= xstrdup("fields are not needed");
1511 error
= parse_select_group_field(value
, &gm
->props
.fields
,
1516 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1518 error
= xasprintf("unknown keyword %s", name
);
1522 if (gm
->group_id
== OFPG_ANY
) {
1523 error
= xstrdup("must specify a group_id");
1526 if (fields
& F_GROUP_TYPE
&& !had_type
) {
1527 error
= xstrdup("must specify a type");
1531 if (fields
& F_COMMAND_BUCKET_ID
) {
1532 if (!(fields
& F_COMMAND_BUCKET_ID_ALL
|| had_command_bucket_id
)) {
1533 error
= xstrdup("must specify a command bucket id");
1536 } else if (had_command_bucket_id
) {
1537 error
= xstrdup("command bucket id is not needed");
1541 /* Now parse the buckets, if any. */
1545 bkt_str
= strchr(bkt_str
+ 1, '=');
1547 error
= xstrdup("must specify bucket content");
1552 next_bkt_str
= strstr(bkt_str
, "bucket=");
1554 *next_bkt_str
= '\0';
1557 bucket
= xzalloc(sizeof(struct ofputil_bucket
));
1558 error
= parse_bucket_str(bucket
, bkt_str
, gm
->type
, usable_protocols
);
1563 list_push_back(&gm
->buckets
, &bucket
->list_node
);
1565 if (gm
->type
!= OFPGT11_SELECT
&& bucket
->weight
) {
1566 error
= xstrdup("Only select groups can have bucket weights.");
1570 bkt_str
= next_bkt_str
;
1572 if (gm
->type
== OFPGT11_INDIRECT
&& !list_is_short(&gm
->buckets
)) {
1573 error
= xstrdup("Indirect groups can have at most one bucket.");
1579 ofputil_bucket_list_destroy(&gm
->buckets
);
1583 char * OVS_WARN_UNUSED_RESULT
1584 parse_ofp_group_mod_str(struct ofputil_group_mod
*gm
, uint16_t command
,
1586 enum ofputil_protocol
*usable_protocols
)
1588 char *string
= xstrdup(str_
);
1589 char *error
= parse_ofp_group_mod_str__(gm
, command
, string
,
1594 ofputil_bucket_list_destroy(&gm
->buckets
);
1599 char * OVS_WARN_UNUSED_RESULT
1600 parse_ofp_group_mod_file(const char *file_name
, uint16_t command
,
1601 struct ofputil_group_mod
**gms
, size_t *n_gms
,
1602 enum ofputil_protocol
*usable_protocols
)
1604 size_t allocated_gms
;
1612 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1613 if (stream
== NULL
) {
1614 return xasprintf("%s: open failed (%s)",
1615 file_name
, ovs_strerror(errno
));
1618 allocated_gms
= *n_gms
;
1621 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1622 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1623 enum ofputil_protocol usable
;
1626 if (*n_gms
>= allocated_gms
) {
1627 struct ofputil_group_mod
*new_gms
;
1630 new_gms
= x2nrealloc(*gms
, &allocated_gms
, sizeof **gms
);
1631 for (i
= 0; i
< *n_gms
; i
++) {
1632 list_moved(&new_gms
[i
].buckets
, &(*gms
)[i
].buckets
);
1636 error
= parse_ofp_group_mod_str(&(*gms
)[*n_gms
], command
, ds_cstr(&s
),
1641 for (i
= 0; i
< *n_gms
; i
++) {
1642 ofputil_bucket_list_destroy(&(*gms
)[i
].buckets
);
1649 if (stream
!= stdin
) {
1653 return xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1655 *usable_protocols
&= usable
;
1660 if (stream
!= stdin
) {
1666 char * OVS_WARN_UNUSED_RESULT
1667 parse_ofp_geneve_table_mod_str(struct ofputil_geneve_table_mod
*gtm
,
1668 uint16_t command
, const char *s
,
1669 enum ofputil_protocol
*usable_protocols
)
1671 *usable_protocols
= OFPUTIL_P_NXM_OXM_ANY
;
1673 gtm
->command
= command
;
1674 list_init(>m
->mappings
);
1677 struct ofputil_geneve_map
*map
= xmalloc(sizeof *map
);
1684 list_push_back(>m
->mappings
, &map
->list_node
);
1686 if (!ovs_scan(s
, "{class=%"SCNi16
",type=%"SCNi8
",len=%"SCNi8
"}->tun_metadata%"SCNi16
"%n",
1687 &map
->option_class
, &map
->option_type
, &map
->option_len
,
1689 ofputil_uninit_geneve_table(>m
->mappings
);
1690 return xstrdup("invalid geneve mapping");