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.
22 #include <netinet/in.h>
24 #include "byte-order.h"
25 #include "openvswitch/dynamic-string.h"
27 #include "meta-flow.h"
28 #include "multipath.h"
31 #include "ofp-actions.h"
33 #include "openvswitch/ofpbuf.h"
34 #include "openflow/openflow.h"
35 #include "ovs-thread.h"
38 #include "socket-util.h"
39 #include "openvswitch/ofp-parse.h"
40 #include "openvswitch/vconn.h"
42 /* Parses 'str' as an 8-bit unsigned integer into '*valuep'.
44 * 'name' describes the value parsed in an error message, if any.
46 * Returns NULL if successful, otherwise a malloc()'d string describing the
47 * error. The caller is responsible for freeing the returned string. */
48 char * OVS_WARN_UNUSED_RESULT
49 str_to_u8(const char *str
, const char *name
, uint8_t *valuep
)
53 if (!str_to_int(str
, 0, &value
) || value
< 0 || value
> 255) {
54 return xasprintf("invalid %s \"%s\"", name
, str
);
60 /* Parses 'str' as a 16-bit unsigned integer into '*valuep'.
62 * 'name' describes the value parsed in an error message, if any.
64 * Returns NULL if successful, otherwise a malloc()'d string describing the
65 * error. The caller is responsible for freeing the returned string. */
66 char * OVS_WARN_UNUSED_RESULT
67 str_to_u16(const char *str
, const char *name
, uint16_t *valuep
)
71 if (!str_to_int(str
, 0, &value
) || value
< 0 || value
> 65535) {
72 return xasprintf("invalid %s \"%s\"", name
, str
);
78 /* Parses 'str' as a 32-bit unsigned integer into '*valuep'.
80 * Returns NULL if successful, otherwise a malloc()'d string describing the
81 * error. The caller is responsible for freeing the returned string. */
82 char * OVS_WARN_UNUSED_RESULT
83 str_to_u32(const char *str
, uint32_t *valuep
)
89 return xstrdup("missing required numeric argument");
93 value
= strtoul(str
, &tail
, 0);
94 if (errno
== EINVAL
|| errno
== ERANGE
|| *tail
) {
95 return xasprintf("invalid numeric format %s", str
);
101 /* Parses 'str' as an 64-bit unsigned integer into '*valuep'.
103 * Returns NULL if successful, otherwise a malloc()'d string describing the
104 * error. The caller is responsible for freeing the returned string. */
105 char * OVS_WARN_UNUSED_RESULT
106 str_to_u64(const char *str
, uint64_t *valuep
)
112 return xstrdup("missing required numeric argument");
116 value
= strtoull(str
, &tail
, 0);
117 if (errno
== EINVAL
|| errno
== ERANGE
|| *tail
) {
118 return xasprintf("invalid numeric format %s", str
);
124 /* Parses 'str' as an 64-bit unsigned integer in network byte order into
127 * Returns NULL if successful, otherwise a malloc()'d string describing the
128 * error. The caller is responsible for freeing the returned string. */
129 char * OVS_WARN_UNUSED_RESULT
130 str_to_be64(const char *str
, ovs_be64
*valuep
)
135 error
= str_to_u64(str
, &value
);
137 *valuep
= htonll(value
);
142 /* Parses 'str' as an Ethernet address into 'mac'.
144 * Returns NULL if successful, otherwise a malloc()'d string describing the
145 * error. The caller is responsible for freeing the returned string. */
146 char * OVS_WARN_UNUSED_RESULT
147 str_to_mac(const char *str
, struct eth_addr
*mac
)
149 if (!ovs_scan(str
, ETH_ADDR_SCAN_FMT
, ETH_ADDR_SCAN_ARGS(*mac
))) {
150 return xasprintf("invalid mac address %s", str
);
155 /* Parses 'str' as an IP address into '*ip'.
157 * Returns NULL if successful, otherwise a malloc()'d string describing the
158 * error. The caller is responsible for freeing the returned string. */
159 char * OVS_WARN_UNUSED_RESULT
160 str_to_ip(const char *str
, ovs_be32
*ip
)
162 struct in_addr in_addr
;
164 if (lookup_ip(str
, &in_addr
)) {
165 return xasprintf("%s: could not convert to IP address", str
);
167 *ip
= in_addr
.s_addr
;
171 /* Parses 'str' as a conntrack helper into 'alg'.
173 * Returns NULL if successful, otherwise a malloc()'d string describing the
174 * error. The caller is responsible for freeing the returned string. */
175 char * OVS_WARN_UNUSED_RESULT
176 str_to_connhelper(const char *str
, uint16_t *alg
)
178 if (!strcmp(str
, "ftp")) {
182 return xasprintf("invalid conntrack helper \"%s\"", str
);
192 parse_protocol(const char *name
, const struct protocol
**p_out
)
194 static const struct protocol protocols
[] = {
195 { "ip", ETH_TYPE_IP
, 0 },
196 { "ipv4", ETH_TYPE_IP
, 0 },
197 { "ip4", ETH_TYPE_IP
, 0 },
198 { "arp", ETH_TYPE_ARP
, 0 },
199 { "icmp", ETH_TYPE_IP
, IPPROTO_ICMP
},
200 { "tcp", ETH_TYPE_IP
, IPPROTO_TCP
},
201 { "udp", ETH_TYPE_IP
, IPPROTO_UDP
},
202 { "sctp", ETH_TYPE_IP
, IPPROTO_SCTP
},
203 { "ipv6", ETH_TYPE_IPV6
, 0 },
204 { "ip6", ETH_TYPE_IPV6
, 0 },
205 { "icmp6", ETH_TYPE_IPV6
, IPPROTO_ICMPV6
},
206 { "tcp6", ETH_TYPE_IPV6
, IPPROTO_TCP
},
207 { "udp6", ETH_TYPE_IPV6
, IPPROTO_UDP
},
208 { "sctp6", ETH_TYPE_IPV6
, IPPROTO_SCTP
},
209 { "rarp", ETH_TYPE_RARP
, 0},
210 { "mpls", ETH_TYPE_MPLS
, 0 },
211 { "mplsm", ETH_TYPE_MPLS_MCAST
, 0 },
213 const struct protocol
*p
;
215 for (p
= protocols
; p
< &protocols
[ARRAY_SIZE(protocols
)]; p
++) {
216 if (!strcmp(p
->name
, name
)) {
225 /* Parses 's' as the (possibly masked) value of field 'mf', and updates
226 * 'match' appropriately. Restricts the set of usable protocols to ones
227 * supporting the parsed field.
229 * Returns NULL if successful, otherwise a malloc()'d string describing the
230 * error. The caller is responsible for freeing the returned string. */
231 static char * OVS_WARN_UNUSED_RESULT
232 parse_field(const struct mf_field
*mf
, const char *s
, struct match
*match
,
233 enum ofputil_protocol
*usable_protocols
)
235 union mf_value value
, mask
;
239 /* If there's no string, we're just trying to match on the
240 * existence of the field, so use a no-op value. */
244 error
= mf_parse(mf
, s
, &value
, &mask
);
246 *usable_protocols
&= mf_set(mf
, &value
, &mask
, match
, &error
);
252 extract_actions(char *s
)
254 s
= strstr(s
, "action");
257 s
= strchr(s
+ 1, '=');
258 return s
? s
+ 1 : NULL
;
265 static char * OVS_WARN_UNUSED_RESULT
266 parse_ofp_str__(struct ofputil_flow_mod
*fm
, int command
, char *string
,
267 enum ofputil_protocol
*usable_protocols
)
272 F_IMPORTANCE
= 1 << 2,
277 char *act_str
= NULL
;
280 *usable_protocols
= OFPUTIL_P_ANY
;
285 string
+= strspn(string
, " \t\r\n"); /* Skip white space. */
286 len
= strcspn(string
, ", \t\r\n"); /* Get length of the first token. */
288 if (!strncmp(string
, "add", len
)) {
290 } else if (!strncmp(string
, "delete", len
)) {
291 command
= OFPFC_DELETE
;
292 } else if (!strncmp(string
, "delete_strict", len
)) {
293 command
= OFPFC_DELETE_STRICT
;
294 } else if (!strncmp(string
, "modify", len
)) {
295 command
= OFPFC_MODIFY
;
296 } else if (!strncmp(string
, "modify_strict", len
)) {
297 command
= OFPFC_MODIFY_STRICT
;
311 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
| F_IMPORTANCE
;
318 case OFPFC_DELETE_STRICT
:
319 fields
= F_OUT_PORT
| F_PRIORITY
;
323 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
326 case OFPFC_MODIFY_STRICT
:
327 fields
= F_ACTIONS
| F_TIMEOUT
| F_PRIORITY
| F_FLAGS
;
334 *fm
= (struct ofputil_flow_mod
) {
335 .match
= MATCH_CATCHALL_INITIALIZER
,
336 .priority
= OFP_DEFAULT_PRIORITY
,
339 .buffer_id
= UINT32_MAX
,
340 .out_port
= OFPP_ANY
,
341 .out_group
= OFPG_ANY
,
342 .delete_reason
= OFPRR_DELETE
,
344 /* For modify, by default, don't update the cookie. */
345 if (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
) {
346 fm
->new_cookie
= OVS_BE64_MAX
;
349 if (fields
& F_ACTIONS
) {
350 act_str
= extract_actions(string
);
352 return xstrdup("must specify an action");
356 while (ofputil_parse_key_value(&string
, &name
, &value
)) {
357 const struct protocol
*p
;
360 if (parse_protocol(name
, &p
)) {
361 match_set_dl_type(&fm
->match
, htons(p
->dl_type
));
363 match_set_nw_proto(&fm
->match
, p
->nw_proto
);
365 } else if (fields
& F_FLAGS
&& !strcmp(name
, "send_flow_rem")) {
366 fm
->flags
|= OFPUTIL_FF_SEND_FLOW_REM
;
367 } else if (fields
& F_FLAGS
&& !strcmp(name
, "check_overlap")) {
368 fm
->flags
|= OFPUTIL_FF_CHECK_OVERLAP
;
369 } else if (fields
& F_FLAGS
&& !strcmp(name
, "reset_counts")) {
370 fm
->flags
|= OFPUTIL_FF_RESET_COUNTS
;
371 *usable_protocols
&= OFPUTIL_P_OF12_UP
;
372 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_packet_counts")) {
373 fm
->flags
|= OFPUTIL_FF_NO_PKT_COUNTS
;
374 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
375 } else if (fields
& F_FLAGS
&& !strcmp(name
, "no_byte_counts")) {
376 fm
->flags
|= OFPUTIL_FF_NO_BYT_COUNTS
;
377 *usable_protocols
&= OFPUTIL_P_OF13_UP
;
378 } else if (!strcmp(name
, "no_readonly_table")
379 || !strcmp(name
, "allow_hidden_fields")) {
380 /* ignore these fields. */
381 } else if (mf_from_name(name
)) {
382 error
= parse_field(mf_from_name(name
), value
, &fm
->match
,
386 return xasprintf("field %s missing value", name
);
389 if (!strcmp(name
, "table")) {
390 error
= str_to_u8(value
, "table", &fm
->table_id
);
391 if (fm
->table_id
!= 0xff) {
392 *usable_protocols
&= OFPUTIL_P_TID
;
394 } else if (fields
& F_OUT_PORT
&& !strcmp(name
, "out_port")) {
395 if (!ofputil_port_from_string(value
, &fm
->out_port
)) {
396 error
= xasprintf("%s is not a valid OpenFlow port",
399 } else if (fields
& F_OUT_PORT
&& !strcmp(name
, "out_group")) {
400 *usable_protocols
&= OFPUTIL_P_OF11_UP
;
401 if (!ofputil_group_from_string(value
, &fm
->out_group
)) {
402 error
= xasprintf("%s is not a valid OpenFlow group",
405 } else if (fields
& F_PRIORITY
&& !strcmp(name
, "priority")) {
406 uint16_t priority
= 0;
408 error
= str_to_u16(value
, name
, &priority
);
409 fm
->priority
= priority
;
410 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "idle_timeout")) {
411 error
= str_to_u16(value
, name
, &fm
->idle_timeout
);
412 } else if (fields
& F_TIMEOUT
&& !strcmp(name
, "hard_timeout")) {
413 error
= str_to_u16(value
, name
, &fm
->hard_timeout
);
414 } else if (fields
& F_IMPORTANCE
&& !strcmp(name
, "importance")) {
415 error
= str_to_u16(value
, name
, &fm
->importance
);
416 } else if (!strcmp(name
, "cookie")) {
417 char *mask
= strchr(value
, '/');
420 /* A mask means we're searching for a cookie. */
421 if (command
== OFPFC_ADD
) {
422 return xstrdup("flow additions cannot use "
426 error
= str_to_be64(value
, &fm
->cookie
);
430 error
= str_to_be64(mask
+ 1, &fm
->cookie_mask
);
432 /* Matching of the cookie is only supported through NXM or
434 if (fm
->cookie_mask
!= htonll(0)) {
435 *usable_protocols
&= OFPUTIL_P_NXM_OF11_UP
;
438 /* No mask means that the cookie is being set. */
439 if (command
!= OFPFC_ADD
&& command
!= OFPFC_MODIFY
440 && command
!= OFPFC_MODIFY_STRICT
) {
441 return xstrdup("cannot set cookie");
443 error
= str_to_be64(value
, &fm
->new_cookie
);
444 fm
->modify_cookie
= true;
446 } else if (!strcmp(name
, "duration")
447 || !strcmp(name
, "n_packets")
448 || !strcmp(name
, "n_bytes")
449 || !strcmp(name
, "idle_age")
450 || !strcmp(name
, "hard_age")) {
451 /* Ignore these, so that users can feed the output of
452 * "ovs-ofctl dump-flows" back into commands that parse
455 error
= xasprintf("unknown keyword %s", name
);
463 /* Check for usable protocol interdependencies between match fields. */
464 if (fm
->match
.flow
.dl_type
== htons(ETH_TYPE_IPV6
)) {
465 const struct flow_wildcards
*wc
= &fm
->match
.wc
;
466 /* Only NXM and OXM support matching L3 and L4 fields within IPv6.
468 * (IPv6 specific fields as well as arp_sha, arp_tha, nw_frag, and
469 * nw_ttl are covered elsewhere so they don't need to be included in
472 if (wc
->masks
.nw_proto
|| wc
->masks
.nw_tos
473 || wc
->masks
.tp_src
|| wc
->masks
.tp_dst
) {
474 *usable_protocols
&= OFPUTIL_P_NXM_OXM_ANY
;
477 if (!fm
->cookie_mask
&& fm
->new_cookie
== OVS_BE64_MAX
478 && (command
== OFPFC_MODIFY
|| command
== OFPFC_MODIFY_STRICT
)) {
479 /* On modifies without a mask, we are supposed to add a flow if
480 * one does not exist. If a cookie wasn't been specified, use a
481 * default of zero. */
482 fm
->new_cookie
= htonll(0);
484 if (fields
& F_ACTIONS
) {
485 enum ofputil_protocol action_usable_protocols
;
486 struct ofpbuf ofpacts
;
489 ofpbuf_init(&ofpacts
, 32);
490 error
= ofpacts_parse_instructions(act_str
, &ofpacts
,
491 &action_usable_protocols
);
492 *usable_protocols
&= action_usable_protocols
;
496 err
= ofpacts_check(ofpacts
.data
, ofpacts
.size
, &fm
->match
.flow
,
497 OFPP_MAX
, fm
->table_id
, 255, usable_protocols
);
498 if (!err
&& !*usable_protocols
) {
499 err
= OFPERR_OFPBAC_MATCH_INCONSISTENT
;
502 error
= xasprintf("actions are invalid with specified match "
503 "(%s)", ofperr_to_string(err
));
508 ofpbuf_uninit(&ofpacts
);
512 fm
->ofpacts_len
= ofpacts
.size
;
513 fm
->ofpacts
= ofpbuf_steal_data(&ofpacts
);
522 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
523 * page) into 'fm' for sending the specified flow_mod 'command' to a switch.
524 * Returns the set of usable protocols in '*usable_protocols'.
526 * To parse syntax for an OFPT_FLOW_MOD (or NXT_FLOW_MOD), use an OFPFC_*
527 * constant for 'command'. To parse syntax for an OFPST_FLOW or
528 * OFPST_AGGREGATE (or NXST_FLOW or NXST_AGGREGATE), use -1 for 'command'.
530 * If 'command' is given as -2, 'str_' may begin with a command name ("add",
531 * "modify", "delete", "modify_strict", or "delete_strict"). A missing command
532 * name is treated as "add".
534 * Returns NULL if successful, otherwise a malloc()'d string describing the
535 * error. The caller is responsible for freeing the returned string. */
536 char * OVS_WARN_UNUSED_RESULT
537 parse_ofp_str(struct ofputil_flow_mod
*fm
, int command
, const char *str_
,
538 enum ofputil_protocol
*usable_protocols
)
540 char *string
= xstrdup(str_
);
543 error
= parse_ofp_str__(fm
, command
, string
, usable_protocols
);
553 static char * OVS_WARN_UNUSED_RESULT
554 parse_ofp_meter_mod_str__(struct ofputil_meter_mod
*mm
, char *string
,
555 struct ofpbuf
*bands
, int command
,
556 enum ofputil_protocol
*usable_protocols
)
563 char *save_ptr
= NULL
;
564 char *band_str
= NULL
;
567 /* Meters require at least OF 1.3. */
568 *usable_protocols
= OFPUTIL_P_OF13_UP
;
576 fields
= F_METER
| F_FLAGS
| F_BANDS
;
584 fields
= F_METER
| F_FLAGS
| F_BANDS
;
591 mm
->command
= command
;
592 mm
->meter
.meter_id
= 0;
594 if (fields
& F_BANDS
) {
595 band_str
= strstr(string
, "band");
597 return xstrdup("must specify bands");
601 band_str
= strchr(band_str
+ 1, '=');
603 return xstrdup("must specify bands");
608 for (name
= strtok_r(string
, "=, \t\r\n", &save_ptr
); name
;
609 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
611 if (fields
& F_FLAGS
&& !strcmp(name
, "kbps")) {
612 mm
->meter
.flags
|= OFPMF13_KBPS
;
613 } else if (fields
& F_FLAGS
&& !strcmp(name
, "pktps")) {
614 mm
->meter
.flags
|= OFPMF13_PKTPS
;
615 } else if (fields
& F_FLAGS
&& !strcmp(name
, "burst")) {
616 mm
->meter
.flags
|= OFPMF13_BURST
;
617 } else if (fields
& F_FLAGS
&& !strcmp(name
, "stats")) {
618 mm
->meter
.flags
|= OFPMF13_STATS
;
622 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
624 return xasprintf("field %s missing value", name
);
627 if (!strcmp(name
, "meter")) {
628 if (!strcmp(value
, "all")) {
629 mm
->meter
.meter_id
= OFPM13_ALL
;
630 } else if (!strcmp(value
, "controller")) {
631 mm
->meter
.meter_id
= OFPM13_CONTROLLER
;
632 } else if (!strcmp(value
, "slowpath")) {
633 mm
->meter
.meter_id
= OFPM13_SLOWPATH
;
635 char *error
= str_to_u32(value
, &mm
->meter
.meter_id
);
639 if (mm
->meter
.meter_id
> OFPM13_MAX
640 || !mm
->meter
.meter_id
) {
641 return xasprintf("invalid value for %s", name
);
645 return xasprintf("unknown keyword %s", name
);
649 if (fields
& F_METER
&& !mm
->meter
.meter_id
) {
650 return xstrdup("must specify 'meter'");
652 if (fields
& F_FLAGS
&& !mm
->meter
.flags
) {
653 return xstrdup("meter must specify either 'kbps' or 'pktps'");
656 if (fields
& F_BANDS
) {
657 uint16_t n_bands
= 0;
658 struct ofputil_meter_band
*band
= NULL
;
661 for (name
= strtok_r(band_str
, "=, \t\r\n", &save_ptr
); name
;
662 name
= strtok_r(NULL
, "=, \t\r\n", &save_ptr
)) {
666 value
= strtok_r(NULL
, ", \t\r\n", &save_ptr
);
668 return xasprintf("field %s missing value", name
);
671 if (!strcmp(name
, "type")) {
672 /* Start a new band */
673 band
= ofpbuf_put_zeros(bands
, sizeof *band
);
676 if (!strcmp(value
, "drop")) {
677 band
->type
= OFPMBT13_DROP
;
678 } else if (!strcmp(value
, "dscp_remark")) {
679 band
->type
= OFPMBT13_DSCP_REMARK
;
681 return xasprintf("field %s unknown value %s", name
, value
);
683 } else if (!band
|| !band
->type
) {
684 return xstrdup("band must start with the 'type' keyword");
685 } else if (!strcmp(name
, "rate")) {
686 char *error
= str_to_u32(value
, &band
->rate
);
690 } else if (!strcmp(name
, "burst_size")) {
691 char *error
= str_to_u32(value
, &band
->burst_size
);
695 } else if (!strcmp(name
, "prec_level")) {
696 char *error
= str_to_u8(value
, name
, &band
->prec_level
);
701 return xasprintf("unknown keyword %s", name
);
706 return xstrdup("meter must have bands");
709 mm
->meter
.n_bands
= n_bands
;
710 mm
->meter
.bands
= ofpbuf_steal_data(bands
);
712 for (i
= 0; i
< n_bands
; ++i
) {
713 band
= &mm
->meter
.bands
[i
];
716 return xstrdup("band must have 'type'");
718 if (band
->type
== OFPMBT13_DSCP_REMARK
) {
719 if (!band
->prec_level
) {
720 return xstrdup("'dscp_remark' band must have"
724 if (band
->prec_level
) {
725 return xstrdup("Only 'dscp_remark' band may have"
730 return xstrdup("band must have 'rate'");
732 if (mm
->meter
.flags
& OFPMF13_BURST
) {
733 if (!band
->burst_size
) {
734 return xstrdup("band must have 'burst_size' "
735 "when 'burst' flag is set");
738 if (band
->burst_size
) {
739 return xstrdup("band may have 'burst_size' only "
740 "when 'burst' flag is set");
745 mm
->meter
.n_bands
= 0;
746 mm
->meter
.bands
= NULL
;
752 /* Convert 'str_' (as described in the Flow Syntax section of the ovs-ofctl man
753 * page) into 'mm' for sending the specified meter_mod 'command' to a switch.
755 * Returns NULL if successful, otherwise a malloc()'d string describing the
756 * error. The caller is responsible for freeing the returned string. */
757 char * OVS_WARN_UNUSED_RESULT
758 parse_ofp_meter_mod_str(struct ofputil_meter_mod
*mm
, const char *str_
,
759 int command
, enum ofputil_protocol
*usable_protocols
)
765 ofpbuf_init(&bands
, 64);
766 string
= xstrdup(str_
);
768 error
= parse_ofp_meter_mod_str__(mm
, string
, &bands
, command
,
772 ofpbuf_uninit(&bands
);
777 static char * OVS_WARN_UNUSED_RESULT
778 parse_flow_monitor_request__(struct ofputil_flow_monitor_request
*fmr
,
779 const char *str_
, char *string
,
780 enum ofputil_protocol
*usable_protocols
)
782 static atomic_count id
= ATOMIC_COUNT_INIT(0);
785 fmr
->id
= atomic_count_inc(&id
);
787 fmr
->flags
= (NXFMF_INITIAL
| NXFMF_ADD
| NXFMF_DELETE
| NXFMF_MODIFY
788 | NXFMF_OWN
| NXFMF_ACTIONS
);
789 fmr
->out_port
= OFPP_NONE
;
790 fmr
->table_id
= 0xff;
791 match_init_catchall(&fmr
->match
);
793 while (ofputil_parse_key_value(&string
, &name
, &value
)) {
794 const struct protocol
*p
;
797 if (!strcmp(name
, "!initial")) {
798 fmr
->flags
&= ~NXFMF_INITIAL
;
799 } else if (!strcmp(name
, "!add")) {
800 fmr
->flags
&= ~NXFMF_ADD
;
801 } else if (!strcmp(name
, "!delete")) {
802 fmr
->flags
&= ~NXFMF_DELETE
;
803 } else if (!strcmp(name
, "!modify")) {
804 fmr
->flags
&= ~NXFMF_MODIFY
;
805 } else if (!strcmp(name
, "!actions")) {
806 fmr
->flags
&= ~NXFMF_ACTIONS
;
807 } else if (!strcmp(name
, "!own")) {
808 fmr
->flags
&= ~NXFMF_OWN
;
809 } else if (parse_protocol(name
, &p
)) {
810 match_set_dl_type(&fmr
->match
, htons(p
->dl_type
));
812 match_set_nw_proto(&fmr
->match
, p
->nw_proto
);
814 } else if (mf_from_name(name
)) {
815 error
= parse_field(mf_from_name(name
), value
, &fmr
->match
,
819 return xasprintf("%s: field %s missing value", str_
, name
);
822 if (!strcmp(name
, "table")) {
823 error
= str_to_u8(value
, "table", &fmr
->table_id
);
824 } else if (!strcmp(name
, "out_port")) {
825 fmr
->out_port
= u16_to_ofp(atoi(value
));
827 return xasprintf("%s: unknown keyword %s", str_
, name
);
838 /* Convert 'str_' (as described in the documentation for the "monitor" command
839 * in the ovs-ofctl man page) into 'fmr'.
841 * Returns NULL if successful, otherwise a malloc()'d string describing the
842 * error. The caller is responsible for freeing the returned string. */
843 char * OVS_WARN_UNUSED_RESULT
844 parse_flow_monitor_request(struct ofputil_flow_monitor_request
*fmr
,
846 enum ofputil_protocol
*usable_protocols
)
848 char *string
= xstrdup(str_
);
849 char *error
= parse_flow_monitor_request__(fmr
, str_
, string
,
855 /* Parses 'string' as an OFPT_FLOW_MOD or NXT_FLOW_MOD with command 'command'
856 * (one of OFPFC_*) into 'fm'.
858 * If 'command' is given as -2, 'string' may begin with a command name ("add",
859 * "modify", "delete", "modify_strict", or "delete_strict"). A missing command
860 * name is treated as "add".
862 * Returns NULL if successful, otherwise a malloc()'d string describing the
863 * error. The caller is responsible for freeing the returned string. */
864 char * OVS_WARN_UNUSED_RESULT
865 parse_ofp_flow_mod_str(struct ofputil_flow_mod
*fm
, const char *string
,
867 enum ofputil_protocol
*usable_protocols
)
869 char *error
= parse_ofp_str(fm
, command
, string
, usable_protocols
);
872 /* Normalize a copy of the match. This ensures that non-normalized
873 * flows get logged but doesn't affect what gets sent to the switch, so
874 * that the switch can do whatever it likes with the flow. */
875 struct match match_copy
= fm
->match
;
876 ofputil_normalize_match(&match_copy
);
882 /* Convert 'setting' (as described for the "mod-table" command
883 * in ovs-ofctl man page) into 'tm->table_vacancy->vacancy_up' and
884 * 'tm->table_vacancy->vacancy_down' threshold values.
885 * For the two threshold values, value of vacancy_up is always greater
886 * than value of vacancy_down.
888 * Returns NULL if successful, otherwise a malloc()'d string describing the
889 * error. The caller is responsible for freeing the returned string. */
890 char * OVS_WARN_UNUSED_RESULT
891 parse_ofp_table_vacancy(struct ofputil_table_mod
*tm
, const char *setting
)
893 char *save_ptr
= NULL
;
894 char *vac_up
, *vac_down
;
895 char *value
= xstrdup(setting
);
897 int vacancy_up
, vacancy_down
;
899 strtok_r(value
, ":", &save_ptr
);
900 vac_down
= strtok_r(NULL
, ",", &save_ptr
);
902 ret_msg
= xasprintf("Vacancy down value missing");
905 if (!str_to_int(vac_down
, 0, &vacancy_down
) ||
906 vacancy_down
< 0 || vacancy_down
> 100) {
907 ret_msg
= xasprintf("Invalid vacancy down value \"%s\"", vac_down
);
910 vac_up
= strtok_r(NULL
, ",", &save_ptr
);
912 ret_msg
= xasprintf("Vacancy up value missing");
915 if (!str_to_int(vac_up
, 0, &vacancy_up
) ||
916 vacancy_up
< 0 || vacancy_up
> 100) {
917 ret_msg
= xasprintf("Invalid vacancy up value \"%s\"", vac_up
);
920 if (vacancy_down
> vacancy_up
) {
921 ret_msg
= xasprintf("Invalid vacancy range, vacancy up should be "
922 "greater than vacancy down (%s)",
923 ofperr_to_string(OFPERR_OFPBPC_BAD_VALUE
));
928 tm
->table_vacancy
.vacancy_down
= vacancy_down
;
929 tm
->table_vacancy
.vacancy_up
= vacancy_up
;
937 /* Convert 'table_id' and 'setting' (as described for the "mod-table" command
938 * in the ovs-ofctl man page) into 'tm' for sending a table_mod command to a
941 * Stores a bitmap of the OpenFlow versions that are usable for 'tm' into
942 * '*usable_versions'.
944 * Returns NULL if successful, otherwise a malloc()'d string describing the
945 * error. The caller is responsible for freeing the returned string. */
946 char * OVS_WARN_UNUSED_RESULT
947 parse_ofp_table_mod(struct ofputil_table_mod
*tm
, const char *table_id
,
948 const char *setting
, uint32_t *usable_versions
)
950 *usable_versions
= 0;
951 if (!strcasecmp(table_id
, "all")) {
952 tm
->table_id
= OFPTT_ALL
;
954 char *error
= str_to_u8(table_id
, "table_id", &tm
->table_id
);
960 tm
->miss
= OFPUTIL_TABLE_MISS_DEFAULT
;
961 tm
->eviction
= OFPUTIL_TABLE_EVICTION_DEFAULT
;
962 tm
->eviction_flags
= UINT32_MAX
;
963 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_DEFAULT
;
964 tm
->table_vacancy
.vacancy_down
= 0;
965 tm
->table_vacancy
.vacancy_up
= 0;
966 tm
->table_vacancy
.vacancy
= 0;
967 /* Only OpenFlow 1.1 and 1.2 can configure table-miss via table_mod.
968 * Only OpenFlow 1.4+ can configure eviction and vacancy events
971 if (!strcmp(setting
, "controller")) {
972 tm
->miss
= OFPUTIL_TABLE_MISS_CONTROLLER
;
973 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
974 } else if (!strcmp(setting
, "continue")) {
975 tm
->miss
= OFPUTIL_TABLE_MISS_CONTINUE
;
976 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
977 } else if (!strcmp(setting
, "drop")) {
978 tm
->miss
= OFPUTIL_TABLE_MISS_DROP
;
979 *usable_versions
= (1u << OFP11_VERSION
) | (1u << OFP12_VERSION
);
980 } else if (!strcmp(setting
, "evict")) {
981 tm
->eviction
= OFPUTIL_TABLE_EVICTION_ON
;
982 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
983 } else if (!strcmp(setting
, "noevict")) {
984 tm
->eviction
= OFPUTIL_TABLE_EVICTION_OFF
;
985 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
986 } else if (!strncmp(setting
, "vacancy", strcspn(setting
, ":"))) {
987 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_ON
;
988 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
989 char *error
= parse_ofp_table_vacancy(tm
, setting
);
993 } else if (!strcmp(setting
, "novacancy")) {
994 tm
->vacancy
= OFPUTIL_TABLE_VACANCY_OFF
;
995 *usable_versions
= (1 << OFP14_VERSION
) | (1u << OFP15_VERSION
);
997 return xasprintf("invalid table_mod setting %s", setting
);
1000 if (tm
->table_id
== 0xfe
1001 && tm
->miss
== OFPUTIL_TABLE_MISS_CONTINUE
) {
1002 return xstrdup("last table's flow miss handling can not be continue");
1009 /* Opens file 'file_name' and reads each line as a flow_mod of the specified
1010 * type (one of OFPFC_*). Stores each flow_mod in '*fm', an array allocated
1011 * on the caller's behalf, and the number of flow_mods in '*n_fms'.
1013 * If 'command' is given as -2, each line may start with a command name
1014 * ("add", "modify", "delete", "modify_strict", or "delete_strict"). A missing
1015 * command name is treated as "add".
1017 * Returns NULL if successful, otherwise a malloc()'d string describing the
1018 * error. The caller is responsible for freeing the returned string. */
1019 char * OVS_WARN_UNUSED_RESULT
1020 parse_ofp_flow_mod_file(const char *file_name
, int command
,
1021 struct ofputil_flow_mod
**fms
, size_t *n_fms
,
1022 enum ofputil_protocol
*usable_protocols
)
1024 size_t allocated_fms
;
1029 *usable_protocols
= OFPUTIL_P_ANY
;
1034 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1035 if (stream
== NULL
) {
1036 return xasprintf("%s: open failed (%s)",
1037 file_name
, ovs_strerror(errno
));
1040 allocated_fms
= *n_fms
;
1043 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1045 enum ofputil_protocol usable
;
1047 if (*n_fms
>= allocated_fms
) {
1048 *fms
= x2nrealloc(*fms
, &allocated_fms
, sizeof **fms
);
1050 error
= parse_ofp_flow_mod_str(&(*fms
)[*n_fms
], ds_cstr(&s
), command
,
1056 for (i
= 0; i
< *n_fms
; i
++) {
1057 free(CONST_CAST(struct ofpact
*, (*fms
)[i
].ofpacts
));
1064 if (stream
!= stdin
) {
1068 err_msg
= xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1072 *usable_protocols
&= usable
; /* Each line can narrow the set. */
1077 if (stream
!= stdin
) {
1083 char * OVS_WARN_UNUSED_RESULT
1084 parse_ofp_flow_stats_request_str(struct ofputil_flow_stats_request
*fsr
,
1085 bool aggregate
, const char *string
,
1086 enum ofputil_protocol
*usable_protocols
)
1088 struct ofputil_flow_mod fm
;
1091 error
= parse_ofp_str(&fm
, -1, string
, usable_protocols
);
1096 /* Special table ID support not required for stats requests. */
1097 if (*usable_protocols
& OFPUTIL_P_OF10_STD_TID
) {
1098 *usable_protocols
|= OFPUTIL_P_OF10_STD
;
1100 if (*usable_protocols
& OFPUTIL_P_OF10_NXM_TID
) {
1101 *usable_protocols
|= OFPUTIL_P_OF10_NXM
;
1104 fsr
->aggregate
= aggregate
;
1105 fsr
->cookie
= fm
.cookie
;
1106 fsr
->cookie_mask
= fm
.cookie_mask
;
1107 fsr
->match
= fm
.match
;
1108 fsr
->out_port
= fm
.out_port
;
1109 fsr
->out_group
= fm
.out_group
;
1110 fsr
->table_id
= fm
.table_id
;
1114 /* Parses a specification of a flow from 's' into 'flow'. 's' must take the
1115 * form FIELD=VALUE[,FIELD=VALUE]... where each FIELD is the name of a
1116 * mf_field. Fields must be specified in a natural order for satisfying
1117 * prerequisites. If 'mask' is specified, fills the mask field for each of the
1118 * field specified in flow. If the map, 'names_portno' is specfied, converts
1119 * the in_port name into port no while setting the 'flow'.
1121 * Returns NULL on success, otherwise a malloc()'d string that explains the
1124 parse_ofp_exact_flow(struct flow
*flow
, struct flow
*mask
, const char *s
,
1125 const struct simap
*portno_names
)
1127 char *pos
, *key
, *value_s
;
1131 memset(flow
, 0, sizeof *flow
);
1133 memset(mask
, 0, sizeof *mask
);
1136 pos
= copy
= xstrdup(s
);
1137 while (ofputil_parse_key_value(&pos
, &key
, &value_s
)) {
1138 const struct protocol
*p
;
1139 if (parse_protocol(key
, &p
)) {
1140 if (flow
->dl_type
) {
1141 error
= xasprintf("%s: Ethernet type set multiple times", s
);
1144 flow
->dl_type
= htons(p
->dl_type
);
1146 mask
->dl_type
= OVS_BE16_MAX
;
1150 if (flow
->nw_proto
) {
1151 error
= xasprintf("%s: network protocol set "
1152 "multiple times", s
);
1155 flow
->nw_proto
= p
->nw_proto
;
1157 mask
->nw_proto
= UINT8_MAX
;
1161 const struct mf_field
*mf
;
1162 union mf_value value
;
1165 mf
= mf_from_name(key
);
1167 error
= xasprintf("%s: unknown field %s", s
, key
);
1171 if (!mf_are_prereqs_ok(mf
, flow
)) {
1172 error
= xasprintf("%s: prerequisites not met for setting %s",
1177 if (mf_is_set(mf
, flow
)) {
1178 error
= xasprintf("%s: field %s set multiple times", s
, key
);
1182 if (!strcmp(key
, "in_port")
1184 && simap_contains(portno_names
, value_s
)) {
1185 flow
->in_port
.ofp_port
= u16_to_ofp(
1186 simap_get(portno_names
, value_s
));
1188 mask
->in_port
.ofp_port
= u16_to_ofp(ntohs(OVS_BE16_MAX
));
1191 field_error
= mf_parse_value(mf
, value_s
, &value
);
1193 error
= xasprintf("%s: bad value for %s (%s)",
1194 s
, key
, field_error
);
1199 mf_set_flow_value(mf
, &value
, flow
);
1201 mf_mask_field(mf
, mask
);
1207 if (!flow
->in_port
.ofp_port
) {
1208 flow
->in_port
.ofp_port
= OFPP_NONE
;
1215 memset(flow
, 0, sizeof *flow
);
1217 memset(mask
, 0, sizeof *mask
);
1223 static char * OVS_WARN_UNUSED_RESULT
1224 parse_bucket_str(struct ofputil_bucket
*bucket
, char *str_
, uint8_t group_type
,
1225 enum ofputil_protocol
*usable_protocols
)
1227 char *pos
, *key
, *value
;
1228 struct ofpbuf ofpacts
;
1232 bucket
->weight
= group_type
== OFPGT11_SELECT
? 1 : 0;
1233 bucket
->bucket_id
= OFPG15_BUCKET_ALL
;
1234 bucket
->watch_port
= OFPP_ANY
;
1235 bucket
->watch_group
= OFPG_ANY
;
1241 while (ofputil_parse_key_value(&pos
, &key
, &value
)) {
1242 if (!strcasecmp(key
, "weight")) {
1243 error
= str_to_u16(value
, "weight", &bucket
->weight
);
1244 } else if (!strcasecmp(key
, "watch_port")) {
1245 if (!ofputil_port_from_string(value
, &bucket
->watch_port
)
1246 || (ofp_to_u16(bucket
->watch_port
) >= ofp_to_u16(OFPP_MAX
)
1247 && bucket
->watch_port
!= OFPP_ANY
)) {
1248 error
= xasprintf("%s: invalid watch_port", value
);
1250 } else if (!strcasecmp(key
, "watch_group")) {
1251 error
= str_to_u32(value
, &bucket
->watch_group
);
1252 if (!error
&& bucket
->watch_group
> OFPG_MAX
) {
1253 error
= xasprintf("invalid watch_group id %"PRIu32
,
1254 bucket
->watch_group
);
1256 } else if (!strcasecmp(key
, "bucket_id")) {
1257 error
= str_to_u32(value
, &bucket
->bucket_id
);
1258 if (!error
&& bucket
->bucket_id
> OFPG15_BUCKET_MAX
) {
1259 error
= xasprintf("invalid bucket_id id %"PRIu32
,
1262 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1263 } else if (!strcasecmp(key
, "action") || !strcasecmp(key
, "actions")) {
1264 ds_put_format(&actions
, "%s,", value
);
1266 ds_put_format(&actions
, "%s(%s),", key
, value
);
1270 ds_destroy(&actions
);
1275 if (!actions
.length
) {
1276 return xstrdup("bucket must specify actions");
1278 ds_chomp(&actions
, ',');
1280 ofpbuf_init(&ofpacts
, 0);
1281 error
= ofpacts_parse_actions(ds_cstr(&actions
), &ofpacts
,
1283 ds_destroy(&actions
);
1285 ofpbuf_uninit(&ofpacts
);
1288 bucket
->ofpacts
= ofpacts
.data
;
1289 bucket
->ofpacts_len
= ofpacts
.size
;
1294 static char * OVS_WARN_UNUSED_RESULT
1295 parse_select_group_field(char *s
, struct field_array
*fa
,
1296 enum ofputil_protocol
*usable_protocols
)
1298 char *name
, *value_str
;
1300 while (ofputil_parse_key_value(&s
, &name
, &value_str
)) {
1301 const struct mf_field
*mf
= mf_from_name(name
);
1305 union mf_value value
;
1307 if (bitmap_is_set(fa
->used
.bm
, mf
->id
)) {
1308 return xasprintf("%s: duplicate field", name
);
1312 error
= mf_parse_value(mf
, value_str
, &value
);
1317 /* The mask cannot be all-zeros */
1318 if (!mf_is_tun_metadata(mf
) &&
1319 is_all_zeros(&value
, mf
->n_bytes
)) {
1320 return xasprintf("%s: values are wildcards here "
1321 "and must not be all-zeros", s
);
1324 /* The values parsed are masks for fields used
1325 * by the selection method */
1326 if (!mf_is_mask_valid(mf
, &value
)) {
1327 return xasprintf("%s: invalid mask for field %s",
1328 value_str
, mf
->name
);
1331 memset(&value
, 0xff, mf
->n_bytes
);
1334 field_array_set(mf
->id
, &value
, fa
);
1336 if (is_all_ones(&value
, mf
->n_bytes
)) {
1337 *usable_protocols
&= mf
->usable_protocols_exact
;
1338 } else if (mf
->usable_protocols_bitwise
== mf
->usable_protocols_cidr
1339 || ip_is_cidr(value
.be32
)) {
1340 *usable_protocols
&= mf
->usable_protocols_cidr
;
1342 *usable_protocols
&= mf
->usable_protocols_bitwise
;
1345 return xasprintf("%s: unknown field %s", s
, name
);
1352 static char * OVS_WARN_UNUSED_RESULT
1353 parse_ofp_group_mod_str__(struct ofputil_group_mod
*gm
, uint16_t command
,
1355 enum ofputil_protocol
*usable_protocols
)
1358 F_GROUP_TYPE
= 1 << 0,
1360 F_COMMAND_BUCKET_ID
= 1 << 2,
1361 F_COMMAND_BUCKET_ID_ALL
= 1 << 3,
1363 bool had_type
= false;
1364 bool had_command_bucket_id
= false;
1365 struct ofputil_bucket
*bucket
;
1368 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1372 fields
= F_GROUP_TYPE
| F_BUCKETS
;
1375 case OFPGC11_DELETE
:
1379 case OFPGC11_MODIFY
:
1380 fields
= F_GROUP_TYPE
| F_BUCKETS
;
1383 case OFPGC15_INSERT_BUCKET
:
1384 fields
= F_BUCKETS
| F_COMMAND_BUCKET_ID
;
1385 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1388 case OFPGC15_REMOVE_BUCKET
:
1389 fields
= F_COMMAND_BUCKET_ID
| F_COMMAND_BUCKET_ID_ALL
;
1390 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1397 memset(gm
, 0, sizeof *gm
);
1398 gm
->command
= command
;
1399 gm
->group_id
= OFPG_ANY
;
1400 gm
->command_bucket_id
= OFPG15_BUCKET_ALL
;
1401 ovs_list_init(&gm
->buckets
);
1402 if (command
== OFPGC11_DELETE
&& string
[0] == '\0') {
1403 gm
->group_id
= OFPG_ALL
;
1407 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1409 /* Strip the buckets off the end of 'string', if there are any, saving a
1410 * pointer for later. We want to parse the buckets last because the bucket
1411 * type influences bucket defaults. */
1412 char *bkt_str
= strstr(string
, "bucket=");
1414 if (!(fields
& F_BUCKETS
)) {
1415 error
= xstrdup("bucket is not needed");
1421 /* Parse everything before the buckets. */
1424 while (ofputil_parse_key_value(&pos
, &name
, &value
)) {
1425 if (!strcmp(name
, "command_bucket_id")) {
1426 if (!(fields
& F_COMMAND_BUCKET_ID
)) {
1427 error
= xstrdup("command bucket id is not needed");
1430 if (!strcmp(value
, "all")) {
1431 gm
->command_bucket_id
= OFPG15_BUCKET_ALL
;
1432 } else if (!strcmp(value
, "first")) {
1433 gm
->command_bucket_id
= OFPG15_BUCKET_FIRST
;
1434 } else if (!strcmp(value
, "last")) {
1435 gm
->command_bucket_id
= OFPG15_BUCKET_LAST
;
1437 error
= str_to_u32(value
, &gm
->command_bucket_id
);
1441 if (gm
->command_bucket_id
> OFPG15_BUCKET_MAX
1442 && (gm
->command_bucket_id
!= OFPG15_BUCKET_FIRST
1443 && gm
->command_bucket_id
!= OFPG15_BUCKET_LAST
1444 && gm
->command_bucket_id
!= OFPG15_BUCKET_ALL
)) {
1445 error
= xasprintf("invalid command bucket id %"PRIu32
,
1446 gm
->command_bucket_id
);
1450 if (gm
->command_bucket_id
== OFPG15_BUCKET_ALL
1451 && !(fields
& F_COMMAND_BUCKET_ID_ALL
)) {
1452 error
= xstrdup("command_bucket_id=all is not permitted");
1455 had_command_bucket_id
= true;
1456 } else if (!strcmp(name
, "group_id")) {
1457 if(!strcmp(value
, "all")) {
1458 gm
->group_id
= OFPG_ALL
;
1460 error
= str_to_u32(value
, &gm
->group_id
);
1464 if (gm
->group_id
!= OFPG_ALL
&& gm
->group_id
> OFPG_MAX
) {
1465 error
= xasprintf("invalid group id %"PRIu32
,
1470 } else if (!strcmp(name
, "type")){
1471 if (!(fields
& F_GROUP_TYPE
)) {
1472 error
= xstrdup("type is not needed");
1475 if (!strcmp(value
, "all")) {
1476 gm
->type
= OFPGT11_ALL
;
1477 } else if (!strcmp(value
, "select")) {
1478 gm
->type
= OFPGT11_SELECT
;
1479 } else if (!strcmp(value
, "indirect")) {
1480 gm
->type
= OFPGT11_INDIRECT
;
1481 } else if (!strcmp(value
, "ff") ||
1482 !strcmp(value
, "fast_failover")) {
1483 gm
->type
= OFPGT11_FF
;
1485 error
= xasprintf("invalid group type %s", value
);
1489 } else if (!strcmp(name
, "selection_method")) {
1490 if (!(fields
& F_GROUP_TYPE
)) {
1491 error
= xstrdup("selection method is not needed");
1494 if (strlen(value
) >= NTR_MAX_SELECTION_METHOD_LEN
) {
1495 error
= xasprintf("selection method is longer than %u"
1497 NTR_MAX_SELECTION_METHOD_LEN
- 1);
1500 memset(gm
->props
.selection_method
, '\0',
1501 NTR_MAX_SELECTION_METHOD_LEN
);
1502 strcpy(gm
->props
.selection_method
, value
);
1503 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1504 } else if (!strcmp(name
, "selection_method_param")) {
1505 if (!(fields
& F_GROUP_TYPE
)) {
1506 error
= xstrdup("selection method param is not needed");
1509 error
= str_to_u64(value
, &gm
->props
.selection_method_param
);
1513 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1514 } else if (!strcmp(name
, "fields")) {
1515 if (!(fields
& F_GROUP_TYPE
)) {
1516 error
= xstrdup("fields are not needed");
1519 error
= parse_select_group_field(value
, &gm
->props
.fields
,
1524 *usable_protocols
&= OFPUTIL_P_OF15_UP
;
1526 error
= xasprintf("unknown keyword %s", name
);
1530 if (gm
->group_id
== OFPG_ANY
) {
1531 error
= xstrdup("must specify a group_id");
1534 if (fields
& F_GROUP_TYPE
&& !had_type
) {
1535 error
= xstrdup("must specify a type");
1539 if (fields
& F_COMMAND_BUCKET_ID
) {
1540 if (!(fields
& F_COMMAND_BUCKET_ID_ALL
|| had_command_bucket_id
)) {
1541 error
= xstrdup("must specify a command bucket id");
1544 } else if (had_command_bucket_id
) {
1545 error
= xstrdup("command bucket id is not needed");
1549 /* Now parse the buckets, if any. */
1553 bkt_str
= strchr(bkt_str
+ 1, '=');
1555 error
= xstrdup("must specify bucket content");
1560 next_bkt_str
= strstr(bkt_str
, "bucket=");
1562 *next_bkt_str
= '\0';
1565 bucket
= xzalloc(sizeof(struct ofputil_bucket
));
1566 error
= parse_bucket_str(bucket
, bkt_str
, gm
->type
, usable_protocols
);
1571 ovs_list_push_back(&gm
->buckets
, &bucket
->list_node
);
1573 if (gm
->type
!= OFPGT11_SELECT
&& bucket
->weight
) {
1574 error
= xstrdup("Only select groups can have bucket weights.");
1578 bkt_str
= next_bkt_str
;
1580 if (gm
->type
== OFPGT11_INDIRECT
&& !ovs_list_is_short(&gm
->buckets
)) {
1581 error
= xstrdup("Indirect groups can have at most one bucket.");
1587 ofputil_bucket_list_destroy(&gm
->buckets
);
1591 char * OVS_WARN_UNUSED_RESULT
1592 parse_ofp_group_mod_str(struct ofputil_group_mod
*gm
, uint16_t command
,
1594 enum ofputil_protocol
*usable_protocols
)
1596 char *string
= xstrdup(str_
);
1597 char *error
= parse_ofp_group_mod_str__(gm
, command
, string
,
1602 ofputil_bucket_list_destroy(&gm
->buckets
);
1607 char * OVS_WARN_UNUSED_RESULT
1608 parse_ofp_group_mod_file(const char *file_name
, uint16_t command
,
1609 struct ofputil_group_mod
**gms
, size_t *n_gms
,
1610 enum ofputil_protocol
*usable_protocols
)
1612 size_t allocated_gms
;
1620 stream
= !strcmp(file_name
, "-") ? stdin
: fopen(file_name
, "r");
1621 if (stream
== NULL
) {
1622 return xasprintf("%s: open failed (%s)",
1623 file_name
, ovs_strerror(errno
));
1626 allocated_gms
= *n_gms
;
1629 *usable_protocols
= OFPUTIL_P_OF11_UP
;
1630 while (!ds_get_preprocessed_line(&s
, stream
, &line_number
)) {
1631 enum ofputil_protocol usable
;
1634 if (*n_gms
>= allocated_gms
) {
1635 struct ofputil_group_mod
*new_gms
;
1638 new_gms
= x2nrealloc(*gms
, &allocated_gms
, sizeof **gms
);
1639 for (i
= 0; i
< *n_gms
; i
++) {
1640 ovs_list_moved(&new_gms
[i
].buckets
, &(*gms
)[i
].buckets
);
1644 error
= parse_ofp_group_mod_str(&(*gms
)[*n_gms
], command
, ds_cstr(&s
),
1649 for (i
= 0; i
< *n_gms
; i
++) {
1650 ofputil_bucket_list_destroy(&(*gms
)[i
].buckets
);
1657 if (stream
!= stdin
) {
1661 return xasprintf("%s:%d: %s", file_name
, line_number
, error
);
1663 *usable_protocols
&= usable
;
1668 if (stream
!= stdin
) {
1674 char * OVS_WARN_UNUSED_RESULT
1675 parse_ofp_tlv_table_mod_str(struct ofputil_tlv_table_mod
*ttm
,
1676 uint16_t command
, const char *s
,
1677 enum ofputil_protocol
*usable_protocols
)
1679 *usable_protocols
= OFPUTIL_P_NXM_OXM_ANY
;
1681 ttm
->command
= command
;
1682 ovs_list_init(&ttm
->mappings
);
1685 struct ofputil_tlv_map
*map
= xmalloc(sizeof *map
);
1692 ovs_list_push_back(&ttm
->mappings
, &map
->list_node
);
1694 if (!ovs_scan(s
, "{class=%"SCNi16
",type=%"SCNi8
",len=%"SCNi8
"}->tun_metadata%"SCNi16
"%n",
1695 &map
->option_class
, &map
->option_type
, &map
->option_len
,
1697 ofputil_uninit_tlv_table(&ttm
->mappings
);
1698 return xstrdup("invalid tlv mapping");